Kuraray Co., Ltd.

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IPC Class
C08J 5/18 - Manufacture of films or sheets 215
C08L 29/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids 195
B32B 27/30 - Layered products essentially comprising synthetic resin comprising acrylic resin 164
G02B 5/30 - Polarising elements 128
B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups 84
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1.

POLY(VINYL ALCOHOL) FILM AND PRODUCTION METHOD THEREFOR

      
Application Number JP2023010856
Publication Number 2023/182267
Status In Force
Filing Date 2023-03-20
Publication Date 2023-09-28
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Ishihara, Mana
  • Takatori, Yohei
  • Nakai, Shinji

Abstract

A poly(vinyl alcohol) film having a degree of swelling (A) of 195-205 mass% and having a value of (B)/(A) of 1.27-1.40, where (B) is the degree of swelling of the film which has been stretched to 2.5 times in 30°C water under the conditions of a stretching rate of 240 %/min. When immersed in 30°C water for 30 seconds, the poly(vinyl alcohol) film has an average water absorption rate of 1.35 mass%/sec or greater. By using such poly(vinyl alcohol) film in polarizing-film production, polarizing films having excellent optical performance can be obtained while diminishing breakages even under high-speed stretching conditions.

IPC Classes  ?

  • C08J 5/18 - Manufacture of films or sheets
  • B29D 7/01 - Films or sheets
  • G02B 5/30 - Polarising elements
  • G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors

2.

THERMOPLASTIC RESIN COMPOSITION, MOLDED ARTICLE, AND LAMINATED STRUCTURE

      
Application Number JP2023007964
Publication Number 2023/171546
Status In Force
Filing Date 2023-03-03
Publication Date 2023-09-14
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kawahara, Moe
  • Okumura, Nao
  • Ono, Tomohiro

Abstract

Provided are: a thermoplastic resin composition comprising a thermoplastic polyurethane in which toughness and melt tension are improved, without significantly impairing the properties of the thermoplastic polyurethane such as excellent tensile breaking strength, tensile breaking strain, and wear resistance; a molded article produced from the thermoplastic resin composition; and a laminated structure. Provided is a thermoplastic resin composition comprising a thermoplastic polyurethane (A) and an acrylic block copolymer (B) that contains an acrylic ester polymer block (b1) and a methacrylic ester polymer block (b2), wherein the content of the thermoplastic polyurethane (A) relative to a total of 100 parts by mass of the thermoplastic polyurethane (A) and the acrylic block copolymer (B) is greater than 75 parts by mass but not more than 99 parts by mass.

IPC Classes  ?

  • C08L 75/04 - Polyurethanes
  • B32B 27/40 - Layered products essentially comprising synthetic resin comprising polyurethanes
  • C08F 297/02 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type
  • C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers

3.

POLY(VINYL ALCOHOL) FILM AND METHOD FOR PRODUCING POLY(VINYL ALCOHOL) FILM

      
Application Number JP2023008824
Publication Number 2023/171710
Status In Force
Filing Date 2023-03-08
Publication Date 2023-09-14
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kazeto, Osamu
  • Okamoto, Minoru

Abstract

A poly(vinyl alcohol) film comprising poly(vinyl alcohol) having a degree of saponification of 98 mol% or higher and a degree of polymerization of 1,500-8,000, characterized in that the poly(vinyl alcohol), when having an absolute molecular weight of 1×106, has an intrinsic viscosity of 7.5-11 dl/g, which is determined with a gel permeation chromatograph equipped with a light scattering detector and a viscometer at a temperature of 40°C using hexafluoroisopropanol containing 20-mM sodium trifluoroacetate as a mobile phase solvent. Such poly(vinyl alcohol) film has a stable film width, fluctuates little in edge thickness, and has excellent stretchability. With this PVA film, it is hence possible to efficiently produce a polarizing film having a wide width and excellent optical performance.

IPC Classes  ?

  • C08F 8/12 - Hydrolysis
  • C08F 8/28 - Condensation with aldehydes or ketones
  • C08F 16/06 - Polyvinyl alcohol
  • C08F 216/06 - Polyvinyl alcohol
  • C08J 5/18 - Manufacture of films or sheets
  • C08J 7/00 - Chemical treatment or coating of shaped articles made of macromolecular substances
  • C08L 29/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
  • G02B 5/30 - Polarising elements
  • G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors

4.

INSULATING MEMBER AND INSULATING SHEET

      
Application Number JP2023008026
Publication Number 2023/171562
Status In Force
Filing Date 2023-03-03
Publication Date 2023-09-14
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Inoue, Yuki
  • Katsuya, Satoshi
  • Tsunofuri, Shohei

Abstract

Provided is an insulating member capable of insulating and fixing a conductive member. An insulating member (10) for insulating a conductive member (6, 8), the insulating member (10) including at least one insulating layer and at least one porous layer, and the insulating member fixing the conductive member. The at least one porous layer is composed of a thermoplastic resin and a plurality of reinforced fibers, and pores are formed between the plurality of reinforced fibers. The porosity Y [%] of the porous layer in the insulating member and the thickness X [μm] of the insulating layer in the insulating member satisfy the following equation (1): 0.01≤Y/X≤4.75

IPC Classes  ?

  • H02K 3/30 - Windings characterised by the insulating material
  • H01B 3/30 - Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
  • H01B 3/47 - Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes fibre-reinforced plastics, e.g. glass-reinforced plastics
  • H01B 17/62 - Insulating-layers or insulating-films on metal bodies
  • H01F 5/06 - Insulation of windings
  • H01F 27/32 - Insulating of coils, windings, or parts thereof
  • H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation

5.

HYDROGENATED BLOCK COPOLYMER, GEL COMPOSITION, CABLE FILLER, CABLE, COSMETICS, LUBRICATING OIL, AND GREASE

      
Application Number JP2023008322
Publication Number 2023/171614
Status In Force
Filing Date 2023-03-06
Publication Date 2023-09-14
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Shimizu, Seiya
  • Motoda, Satoshi

Abstract

This hydrogenated block copolymer (a) is a hydrogenated product of a block copolymer that has one polymeric block (A) in which a main body thereof is an aromatic vinyl compound unit, and at least one polymeric block (B) in which main bodies thereof are a butadiene unit (Bd) and an isoprene unit (Ip). The hydrogenated block copolymer satisfies the following requirements (I) and (II). (I) The formula (i) is satisfied. (i): α×β>6.500×109 (In formula (i), α represents the weight average molecular weight of the polymeric block (A), and β represents the weight average molecular weight of the hydrogenated block copolymer (a).) (II) The level of vinylation of the polymeric block (B) is less than 35%.

IPC Classes  ?

  • C08F 8/04 - Reduction, e.g. hydrogenation
  • A61K 8/81 - Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • A61Q 1/00 - Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q 5/00 - Preparations for care of the hair
  • A61Q 19/10 - Washing or bathing preparations
  • C08F 293/00 - Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
  • C10M 143/12 - Lubricating composition characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing conjugated diene
  • C10N 30/02 - Pour-point; Viscosity index
  • C10N 40/04 - Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
  • C10N 40/25 - Internal-combustion engines

6.

PIGMENT-CONTAINING COMPOSITION, AND INK USING SAME

      
Application Number JP2023009320
Publication Number 2023/171797
Status In Force
Filing Date 2023-03-10
Publication Date 2023-09-14
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Nishijima, Yuuki
  • Fukumoto, Takashi

Abstract

Provided are: a pigment-containing composition capable of suppressing pigment fading by inhibiting pigment degradation; and an ink using said composition. The pigment-containing composition comprises: a pigment capable of absorbing or emitting light having a wavelength of 380 nm-2,500 nm; and a compound (A) including a structure represented by general formula (I). (In general formula (I), R1and R2each independently represent any one among a hydrogen atom, an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, an alkenyl group having 2-6 carbon atoms, an aryl group having 6-20 carbon atoms, and an aralkyl group having 7-20 carbon atoms. R3and R4 each independently represent any one among a hydrogen atom, an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, an alkenyl group having 2-6 carbon atoms, an alkenyloxy group having 2-6 carbon atoms, an aryl group having 6-20 carbon atoms, and an aralkyl group having 7-20 carbon atoms.)

IPC Classes  ?

  • C07C 43/15 - Unsaturated ethers containing only non-aromatic carbon-to-carbon double bonds
  • C07C 43/178 - Unsaturated ethers containing hydroxy or O-metal groups
  • C09B 7/02 - Bis-indole indigos
  • C09B 29/08 - Amino benzenes
  • C09B 29/15 - Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group of the naphthalene series
  • C09D 17/00 - Pigment pastes, e.g. for mixing in paints
  • C07B 61/00 - Other general methods
  • C09D 11/00 - Inks
  • C09B 67/00 - Influencing the physical, e.g. the dyeing or printing, properties of dyestuffs without chemical reaction, e.g. by treating with solvents; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
  • C09B 67/44 - Solutions
  • C09B 67/46 - Dispersions

7.

ORGANIC/INORGANIC CLADDING MATERIAL

      
Application Number JP2023006233
Publication Number 2023/167058
Status In Force
Filing Date 2023-02-21
Publication Date 2023-09-07
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Nakashima, Takahiro
  • Onodera, Minoru
  • Sasaki, Shoma

Abstract

An organic/inorganic cladding material equipped with a thermoplastic liquid crystal polymer film which has a first thermal expansion coefficient in one direction, and an inorganic layer which has a second thermal expansion coefficient in a direction parallel to the one direction, and is joined to the thermoplastic liquid crystal polymer film, wherein the first thermal expansion coefficient is lower than the second thermal expansion coefficient, and the difference between the first thermal expansion coefficient and the second thermal expansion coefficient is 10ppm/K or greater.

IPC Classes  ?

  • B32B 7/027 - Thermal properties
  • B29C 55/02 - Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
  • B32B 27/36 - Layered products essentially comprising synthetic resin comprising polyesters

8.

PRODUCTION METHOD OF 2,7-OCTADIEN-1-OL

      
Application Number JP2023006231
Publication Number 2023/162973
Status In Force
Filing Date 2023-02-21
Publication Date 2023-08-31
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Hosaka, Yusaku
  • Kobayashi, Shohei

Abstract

A production method of 2,7-octadien-1-ol that comprises: step (1) for feeding a liquid starting material mixture containing butadiene, a Group 6-11 transition metal catalyst containing a Group 6-11 transition metal, a tertiary phosphorus compound, an amine compound and water into a telomerization reactor; and step (2) for reacting butadiene and water in the telomerization reactor under a carbon dioxide atmosphere to obtain a liquid reaction mixture containing 2,7-octadiene-1-ol, wherein the residence time of the liquid starting material mixture in the telomerization reactor is 1.3-3.0 hours.

IPC Classes  ?

  • C07C 29/46 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring increasing the number of carbon atoms by addition reactions, i.e. reactions involving at least one carbon-to-carbon double or triple bond by diene-synthesis
  • C07C 33/02 - Acyclic alcohols with carbon-to-carbon double bonds

9.

CARBONACEOUS MATERIAL

      
Application Number JP2023002634
Publication Number 2023/157610
Status In Force
Filing Date 2023-01-27
Publication Date 2023-08-24
Owner KURARAY CO., LTD. (Japan)
Inventor Iwasaki, Hideharu

Abstract

XPSNDIRXPSNDIRNDIR as found by NDIR of 0.20 to 0.78; and a specific surface area as found by BET of 40 m2/g or less.

IPC Classes  ?

  • C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,
  • H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals

10.

POLYVINYL ALCOHOL-BASED FIBER, FIBER STRUCTURE, AND METHOD FOR PRODUCING SAME

      
Application Number JP2023003243
Publication Number 2023/149481
Status In Force
Filing Date 2023-02-01
Publication Date 2023-08-10
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Iwachido Naoyuki
  • Endo Ryokei
  • Shimabukuro Osamu
  • Nonaka Yoshimi

Abstract

[Problem] To provide a polyvinyl alcohol-based fiber having a sufficient shrinkage rate and a sufficient shrinkage stress when water at room temperature or higher, particularly around 35 °C, is absorbed. [Solution] Provided are: a polyvinyl alcohol-based fiber which includes a modified polyvinyl alcohol containing at least 1 mol% of a carboxy group and has a birefringence index of at least 0.040; a fiber structure using said polyvinyl alcohol-based fiber; and a method for producing said polyvinyl alcohol-based fiber.

IPC Classes  ?

  • D01F 6/34 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising unsaturated alcohols, acetals, or ketals as the major constituent

11.

MULTILAYER LAMINATE

      
Application Number JP2023002866
Publication Number 2023/149397
Status In Force
Filing Date 2023-01-30
Publication Date 2023-08-10
Owner KURARAY CO., LTD. (Japan)
Inventor Muguruma, Shinichi

Abstract

Provided is a multilayer laminate in which haze and transmittance can be adjusted as appropriate. A multilayer laminate (1) according to one aspect of the present invention is a multilayer laminate obtained by laminating at least: a substrate (11); a first dimming layer (21) including liquid crystal molecules of which the alignment states change according to an applied voltage; and a second dimming layer (22) including a photochromic material.

IPC Classes  ?

  • G02F 1/13 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
  • B60J 3/04 - Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in transparency
  • E06B 9/24 - Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance
  • G02F 1/1334 - Constructional arrangements based on polymer-dispersed liquid crystals, e.g. microencapsulated liquid crystals
  • G02F 1/17 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on variable-absorption elements not provided for in groups

12.

POLISHING LAYER, POLISHING PAD, METHOD FOR MANUFACTURING POLISHING PAD, AND POLISHING METHOD

      
Application Number JP2023003092
Publication Number 2023/149434
Status In Force
Filing Date 2023-01-31
Publication Date 2023-08-10
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Sunayama Azusa
  • Goshi Yuko
  • Kato Mitsuru

Abstract

A polishing layer containing polyurethane, the elongation at break of the polyurethane at a tension speed of 50mm/min after undergoing 50°C water-based saturation swelling being less than 100%; a polishing pad comprising said polishing layer and a method for manufacturing the polishing pad; and a polishing method using the polishing pad.

IPC Classes  ?

  • B24B 37/24 - Lapping pads for working plane surfaces characterised by the composition or properties of the pad materials
  • C08G 18/00 - Polymeric products of isocyanates or isothiocyanates
  • H01L 21/304 - Mechanical treatment, e.g. grinding, polishing, cutting

13.

METHOD FOR MANUFACTURING RESIN SHEET BY USING 3D PRINTER, AND POLISHING PAD HAVING POLISHING LAYER OBTAINED THEREBY

      
Application Number JP2023002861
Publication Number 2023/145933
Status In Force
Filing Date 2023-01-30
Publication Date 2023-08-03
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kato Mitsuru
  • Sugioka Takashi

Abstract

The present invention relates to: a method for manufacturing a resin sheet, the method comprising at least step P for deforming a sheet-shaped resin modeled article formed by a 3D printer to obtain a compressed sheet by applying pressure (p) to the sheet-shaped resin modeled article while heating the sheet-shaped resin modeled article; and a polishing pad having a polishing layer obtained by using said manufacturing method.

IPC Classes  ?

  • B24D 3/00 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
  • B24D 11/00 - Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 80/00 - Products made by additive manufacturing
  • B24B 37/24 - Lapping pads for working plane surfaces characterised by the composition or properties of the pad materials
  • B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
  • B29C 64/188 - Processes of additive manufacturing involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control
  • B29C 64/209 - Heads; Nozzles
  • B29C 64/379 - Handling of additively manufactured objects, e.g. using robots
  • B33Y 40/20 - Post-treatment, e.g. curing, coating or polishing
  • B33Y 70/00 - Materials specially adapted for additive manufacturing
  • H01L 21/304 - Mechanical treatment, e.g. grinding, polishing, cutting

14.

ANTENNA SYSTEM, AND MANUFACTURING METHOD AND DESIGN METHOD FOR SAME

      
Application Number JP2023001227
Publication Number 2023/140261
Status In Force
Filing Date 2023-01-17
Publication Date 2023-07-27
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Ikeda, Keisuke
  • Sunamoto, Tatsuya
  • Onodera, Minoru

Abstract

nnminnnminnn).

IPC Classes  ?

  • H01Q 1/40 - Radiating elements coated with, or embedded in, protective material
  • H01Q 1/22 - Supports; Mounting means by structural association with other equipment or articles
  • H01Q 1/32 - Adaptation for use in or on road or rail vehicles

15.

CURABLE RESIN COMPOSITION, ADHESIVE, MOLDING MATERIAL, CURED ARTICLE

      
Application Number JP2023001941
Publication Number 2023/140382
Status In Force
Filing Date 2023-01-23
Publication Date 2023-07-27
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Umeda, Yasunari
  • Nakamura, Kimitoshi

Abstract

The objective of the present invention is to provide: a curable resin composition that has high dispersibility of acrylic rubber particles in a curable resin and can provide a cured article with excellent appearance; an adhesive; a molding material; and a cured article. Provided is a curable resin composition comprising a curable resin (A) and acrylic rubber particles (B), wherein the acrylic rubber particles (B) each has: a multilayer structure of two or more layers including an inner layer containing a crosslinked rubber polymer having an acrylate ester unit; and an outermost layer containing a rigid polymer, and wherein the outermost layer of the acrylic rubber particles (B) has a thickness of 3.5 nm or more. Also provided are an adhesive and a curing agent each comprising the curable resin composition, and a cured article of the curable resin composition.

IPC Classes  ?

  • C08L 101/00 - Compositions of unspecified macromolecular compounds
  • C08F 265/06 - Polymerisation of acrylate or methacrylate esters on to polymers thereof
  • C08L 63/00 - Compositions of epoxy resins; Compositions of derivatives of epoxy resins

16.

COMPOSITE MATERIAL AND METHOD OF MANUFACTURING THE SAME

      
Application Number JP2022048289
Publication Number 2023/132307
Status In Force
Filing Date 2022-12-27
Publication Date 2023-07-13
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kusudo, Kazumasa
  • Aso, Yoshifumi
  • Katsuya, Satoshi

Abstract

Provided is a composite material that is useful as a reinforcing member, and the like. This composite material comprises at least: a fabric including, as a yarn, a filament having a tensile elasticity of 20 GPa or more; and a thermoplastic elastomer resin. The thermoplastic elastomer resin passes from one surface of the fabric, through an opening in the fabric, and is exposed to the other surface thereof.

IPC Classes  ?

  • B29B 11/16 - Making preforms characterised by structure or composition comprising fillers or reinforcements
  • D03D 1/00 - Woven fabrics designed to make specified articles
  • D03D 15/292 - Conjugate, i.e. bi- or multicomponent, fibres or filaments
  • D03D 15/56 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads elastic
  • B29K 105/10 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns oriented

17.

POLYESTER AND MOLDED ARTICLE COMPRISING SAME

      
Application Number JP2023000021
Publication Number 2023/132334
Status In Force
Filing Date 2023-01-04
Publication Date 2023-07-13
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Matsugi, Hiroshi
  • Sakano, Takeshi

Abstract

A polyester according to the present invention contains 0.001-0.2 mol% of a unit derived from a compound represented by formula (I). Said polyester has non-Newtonian properties suitable for extrusion molding, etc., and inhibits coloring or generation of a gel compared to other resins despite polycondensation being performed at high temperatures. Moreover, this polyester is highly safe. [In formula (I), the total of x, y, z, and w is 1-50, and R1-R4 each independently represent a hydrogen atom or an acyl group having 1-18 carbons atoms.]

IPC Classes  ?

  • C08G 63/00 - Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule

18.

VINYL ALCOHOL COPOLYMER, RESIN COMPOSITION CONTAINING SAME, AND RESIN MOLDED BODY

      
Application Number JP2022047468
Publication Number 2023/127700
Status In Force
Filing Date 2022-12-22
Publication Date 2023-07-06
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Baba, Masahiro
  • Akutagawa, Shinnosuke
  • Ueyama, Shingo
  • Konishi, Hiroyuki

Abstract

A vinyl alcohol copolymer according to the present invention includes a vinyl alcohol constituent unit and a C3-C30 olefin constituent unit vinyl alcohol. This copolymer satisfies at least one among the conditions in which: the difference between the melting point and the lowest heat-sealing temperature is 45 °C or more; and the lowest heat-sealing temperature is 80 °C or less. The copolymer satisfies a predetermined relational expression on the basis of the strength obtained from the ultraviolet absorption detector and the refractive index detector, and the number-average molecular weight, in gel permeation chromatography measurements of said copolymer.

IPC Classes  ?

  • C08F 216/06 - Polyvinyl alcohol
  • C08F 8/12 - Hydrolysis
  • C08F 210/00 - Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond

19.

VINYL ALCOHOL COPOLYMER, AND RESIN COMPOSITION AND RESIN MOLDED BODY INCLUDING SAME

      
Application Number JP2022047469
Publication Number 2023/127701
Status In Force
Filing Date 2022-12-22
Publication Date 2023-07-06
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Akutagawa, Shinnosuke
  • Baba, Masahiro
  • Konishi, Hiroyuki

Abstract

This vinyl alcohol copolymer includes vinyl alcohol structural units and olefin structural units. In the copolymer, the storage modulus at 140°C according to dynamic viscoelasticity measurement in conformance with JIS K7244-4:1999 is 3.0×105-7.0×107Pa, and the storage modulus at 90°C according to the dynamic viscoelasticity measurement is 3.5×106 Pa or greater.

IPC Classes  ?

  • C08F 216/06 - Polyvinyl alcohol
  • C08F 8/12 - Hydrolysis
  • C08F 210/00 - Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
  • C08J 5/18 - Manufacture of films or sheets
  • C09J 5/00 - Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
  • C09J 129/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids

20.

PHOTOSENSITIVE RESIN COMPOSITION

      
Application Number JP2022047473
Publication Number 2023/127702
Status In Force
Filing Date 2022-12-22
Publication Date 2023-07-06
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Ueno, Yoshikazu
  • Uehara, Yosuke

Abstract

This photosensitive resin composition comprises a thermoplastic elastomer (A), a liquid farnesene rubber (B), an ethylenic unsaturated compound (C), and a photoinitiator (D).

IPC Classes  ?

  • G03F 7/027 - Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
  • B41N 1/00 - Printing plates or foils; Materials therefor
  • C08L 9/00 - Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
  • C08L 53/02 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
  • G03F 7/00 - Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor

21.

POLYVINYL ALCOHOL FILM AND METHOD FOR PRODUCING POLYVINYL ALCOHOL FILM

      
Application Number JP2022048148
Publication Number 2023/127874
Status In Force
Filing Date 2022-12-27
Publication Date 2023-07-06
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kobayashi Shinzo
  • Kazeto Osamu
  • Isozaki Takanori

Abstract

The present invention provides: a PVA film which is able to be stretched at a high stretching ratio even at high temperatures; and a method for producing the PVA film. The present invention provides a PVA film which is characterized in that if the heat flow of this PVA film is measured by means of a differential scanning calorimeter in the presence of water, the melting end temperature thereof is not less than 93°C but less than 96°C.

IPC Classes  ?

  • C08J 5/18 - Manufacture of films or sheets
  • G02B 5/30 - Polarising elements
  • G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors

22.

THERMOPLASTIC ELASTOMER COMPOSITION, PELLET OF THERMOPLASTIC ELASTOMER COMPOSITION, RESIN COMPOSITION, METHOD FOR PRODUCING THERMOPLASTIC ELASTOMER COMPOSITION, AND METHOD FOR PRODUCING RESIN COMPOSITION

      
Application Number JP2022048275
Publication Number 2023/127895
Status In Force
Filing Date 2022-12-27
Publication Date 2023-07-06
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kato, Masahiro
  • Konishi, Daisuke
  • Sasaki, Hiromitsu
  • Tomishima, Yuta
  • Hasegawa, Takumi

Abstract

Provided are a thermoplastic elastomer composition in which the occurrence of bleeding is suppressed, and which is capable of improving grip properties and is suitable for masterbatches, a pellet of the thermoplastic elastomer composition, and a method for producing the thermoplastic elastomer composition. Additionally provided are a resin composition containing the thermoplastic elastomer composition, and a method for producing the resin composition. The thermoplastic elastomer composition comprises: a block copolymer (X) that includes a polymer block (A) containing a structural unit derived from an aromatic vinyl compound, and a polymer block (B) containing a structural unit derived from a conjugated diene compound; and a liquid rubber component (Y). The polymer block (B) includes a polymer block (B-1) containing a structural unit derived from β-farnesene.

IPC Classes  ?

  • C08L 53/02 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
  • C08F 297/04 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising vinyl aromatic monomers and conjugated dienes
  • C08J 3/22 - Compounding polymers with additives, e.g. colouring using masterbatch techniques
  • C08K 3/36 - Silica
  • C08L 7/00 - Compositions of natural rubber
  • C08L 9/00 - Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
  • C08L 9/06 - Copolymers with styrene
  • C08L 15/00 - Compositions of rubber derivatives

23.

PELLET OF THERMOPLASTIC ELASTOMER COMPOSITION, RESIN COMPOSITION, METHOD FOR PRODUCING PELLET OF THERMOPLASTIC ELASTOMER COMPOSITION, AND METHOD FOR PRODUCING RESIN COMPOSITION

      
Application Number JP2022048276
Publication Number 2023/127896
Status In Force
Filing Date 2022-12-27
Publication Date 2023-07-06
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kato, Masahiro
  • Konishi, Daisuke
  • Sasaki, Hiromitsu
  • Tomishima, Yuta
  • Hasegawa, Takumi

Abstract

Provided is, in a shape (for example, a pellet) that can be handled easily, a thermoplastic elastomer composition that contains liquid rubber and that can be used to manufacture a molded article in which bleeding is suppressed and which exhibits desired mechanical characteristics. This pellet is of a thermoplastic elastomer composition that contains: 100 parts by mass of a block copolymer (X) including a polymeric block (A) that has a structural unit derived from an aromatic vinyl compound and a polymeric block (B) that has a structural unit derived from a conjugated diene compound; and not less than 10 parts by mass but less than 150 parts by mass of a liquid rubber component (Y). An antiblocking agent exists in a state of being in contact with the surface of the pellet. The contained amount of the antiblocking agent, including the amount exiting on the surface of the pellet, is 0.1-1.5 parts by mass with respect to 100 parts by mass of the pellet.

IPC Classes  ?

  • C08L 53/02 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
  • C08F 2/44 - Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
  • C08F 2/50 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
  • C08J 3/215 - Compounding polymers with additives, e.g. colouring in the presence of a liquid phase the polymer being premixed with a liquid phase at least one additive being also premixed with a liquid phase
  • C08K 3/36 - Silica
  • C08K 5/098 - Metal salts of carboxylic acids
  • C08K 5/20 - Carboxylic acid amides
  • C08L 15/00 - Compositions of rubber derivatives

24.

MODIFIED VINYL ALCOHOL POLYMER AND METHOD FOR PRODUCING SAME

      
Application Number JP2022047467
Publication Number 2023/127699
Status In Force
Filing Date 2022-12-22
Publication Date 2023-07-06
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Akutagawa, Shinnosuke
  • Konishi, Hiroyuki
  • Mishima, Kazutoshi

Abstract

12122) ≤ 98

IPC Classes  ?

25.

POLYAMIDE COMPOSITION

      
Application Number JP2022046617
Publication Number 2023/120457
Status In Force
Filing Date 2022-12-19
Publication Date 2023-06-29
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Sugai, Naoto
  • Nanya, Atsushi

Abstract

The present invention provides a polyamide composition which exhibits excellent heat resistance and excellent chemical resistance, while having high moldability. This polyamide composition contains a polyamide (A) which contains a diamine unit (X) and a dicarboxylic acid unit (Y), and an organic thermal stabilizer (B); the diamine unit (X) contains not less than 0.1% by mole but less than 36% by mole of a diamine unit (X1); and the diamine unit (X1) is a constituent unit that is derived from an aliphatic diamine which has 6 to 10 carbon atoms, wherein if a carbon atom to which an arbitrary one of the amino groups is bonded is taken to be in the 1-position, an alkyl group having 2 or 3 carbon atoms is bonded to the carbon atom in the 2-position.

IPC Classes  ?

  • C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
  • C08G 69/02 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids
  • C08K 5/13 - Phenols; Phenolates

26.

POLYAMIDE COMPOSITION

      
Application Number JP2022046620
Publication Number 2023/120460
Status In Force
Filing Date 2022-12-19
Publication Date 2023-06-29
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Sugai, Naoto
  • Nanya, Atsushi

Abstract

According to the present invention, a polyamide composition contains: a polyamide (A) including a diamine unit (X) and a dicarboxylic acid unit (Y); and a halogen-free flame retardant (B), wherein the diamine unit (X) includes at least 0.1 mol% and less than 36 mol% of a diamine unit (X1), and the diamine unit (X1) is a structural unit derived from an aliphatic diamine having 6-10 carbon atoms and having a C2-3 alkyl group bonded to the 2-position carbon atom when any one amino group is bonded to the 1-position carbon atom.

IPC Classes  ?

  • C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
  • C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
  • C08K 3/013 - Fillers, pigments or reinforcing additives
  • C08K 5/5313 - Phosphinic compounds, e.g. R2=P(:O)OR'

27.

POLYAMIDE COMPOSITION AND MOLDED ARTICLE

      
Application Number JP2022046623
Publication Number 2023/120463
Status In Force
Filing Date 2022-12-19
Publication Date 2023-06-29
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Sekiguchi, Kenji
  • Takeda, Hideaki
  • Nanya, Atsushi

Abstract

The present invention provides: a polyamide composition which exhibits excellent heat resistance and toughness, while having high moldability; and a molded article which is formed of this polyamide composition. The present invention provides a polyamide composition which contains a polyamide (A) and a polyolefin (B), wherein: the polyamide (A) contains a diamine unit (X) and a dicarboxylic acid unit (Y); the diamine unit (X) contains not less than 0.1% by mole but less than 36% by mole of a diamine unit (X1); the diamine unit (X1) is a constituent unit that is derived from an aliphatic diamine which has 6 to 10 carbon atoms, wherein if a carbon atom to which an arbitrary one of the amino groups is bonded is taken to be in the 1-position, an alkyl group having 2 or 3 carbon atoms is bonded to the carbon atom in the 2-position; and the content of the polyolefin (B) in the polyamide composition is not less than 2% by mass but less than 40% by mass.

IPC Classes  ?

  • C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
  • C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
  • C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
  • C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment

28.

METHOD FOR PRODUCING MODIFIED ETHYLENE-VINYL ALCOHOL COPOLYMER AND RESIN COMPOSITION INCLUDING SAME

      
Application Number JP2022047645
Publication Number 2023/120705
Status In Force
Filing Date 2022-12-23
Publication Date 2023-06-29
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Somemiya, Kazuyuki
  • Morihara, Yasushi

Abstract

A method for producing a modified ethylene-vinyl alcohol copolymer (C), the method including reacting an ethylene-vinyl alcohol copolymer (A) and a C2-8 monovalent epoxy compound (B) through melt kneading in an extruder using a catalyst solution (D) that is an acetone solution containing zinc ions (F) and sulfonate ions. In this method, it is preferable to use 0.05-1.0 μmol/g of zinc ions (F) in terms of the number of mol relative to the mass of the ethylene-vinyl alcohol copolymer (A). Also, it is preferable to add a mixture of the monovalent epoxy compound (B) and the catalyst solution (D) to the molten ethylene-vinyl alcohol copolymer (A). There is thereby provided a method for producing modified EVOH having exceptional melt stability as well as exceptional barrier properties, stretchability, and the like.

IPC Classes  ?

  • C08F 8/08 - Epoxidation
  • C08F 216/14 - Monomers containing only one unsaturated aliphatic radical
  • C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
  • C08L 29/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
  • C08L 29/10 - Homopolymers or copolymers of unsaturated ethers

29.

RESIN COMPOSITION AND PURGING AGENT USING SAME, AND MOLDING MACHINE PURGING METHOD

      
Application Number JP2022046107
Publication Number 2023/120338
Status In Force
Filing Date 2022-12-14
Publication Date 2023-06-29
Owner KURARAY CO., LTD. (Japan)
Inventor Suzuki, Makoto

Abstract

A resin composition according to the present invention contains a hydrophilic resin (A), water (B), a basic compound (C), and a polyolefin resin (D). The content of the water (B) is 10-70 parts by mass to 100 parts by mass of the hydrophilic resin (A), the content of the basic compound (C) is 0.1-15 parts by mass to 100 parts by mass of the hydrophilic resin (A), and the polyolefin resin (D) satisfies the following formula (1): (1): 30>X×Y÷(1-Z)≥1 In formula (1), X is the MFR (g/10 min) at 190°C of the polyolefin resin (D), Y is the relaxation time (seconds) of the polyolefin resin (D) at 220°C, and Z is the density (g/cm3) of the polyolefin resin (D).

IPC Classes  ?

  • C08L 101/00 - Compositions of unspecified macromolecular compounds
  • B29C 48/27 - Cleaning; Purging; Avoiding contamination
  • C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
  • C08L 29/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids

30.

POLYAMIDE COMPOSITION

      
Application Number JP2022046616
Publication Number 2023/120456
Status In Force
Filing Date 2022-12-19
Publication Date 2023-06-29
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Sugai, Naoto
  • Nanya, Atsushi

Abstract

The present invention provides a polyamide composition which exhibits excellent heat resistance and excellent chemical resistance, while having high moldability. This polyamide composition contains a polyamide (A) which contains a diamine unit (X) and a dicarboxylic acid unit (Y), a copper compound (B1) and a metal halide (B2); the diamine unit (X) contains not less than 0.1% by mole but less than 36% by mole of a diamine unit (X1); and the diamine unit (X1) is derived from an aliphatic diamine which has 6 to 10 carbon atoms, wherein if a carbon atom to which an arbitrary one of the amino groups is bonded is taken to be in the 1-position, an alkyl group having 2 or 3 carbon atoms is bonded to the carbon atom in the 2-position.

IPC Classes  ?

  • C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
  • C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
  • C08K 3/16 - Halogen-containing compounds
  • C08K 3/24 - Acids; Salts thereof

31.

POLYAMIDE COMPOSITION

      
Application Number JP2022046618
Publication Number 2023/120458
Status In Force
Filing Date 2022-12-19
Publication Date 2023-06-29
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Itoi, Yuichi
  • Takeda, Hideaki
  • Nanya, Atsushi

Abstract

The present invention provides a polyamide composition that has high moldability, excellent heat resistance, high mechanical strength, and low anisotropy. Provided is a polyamide composition comprising a polyamide (A) and an inorganic filler (B), wherein: the polyamide (A) includes a diamine unit (X) and a dicarboxylic acid unit (Y); the diamine unit (X) contains not less than 0.1 mol% but less than 36 mol% of a diamine unit (X1); the diamine unit (X1) is a structural unit derived from an aliphatic diamine in which, when position 1 is defined as a carbon atom to which an arbitrary amino group is bonded, an alkyl group having a carbon number of 2 or 3 is bonded to the carbon atom at position 2, and the carbon number thereof is 6-10; and the aspect ratio of the inorganic filler (B) in the polyamide composition is 1-22.

IPC Classes  ?

  • C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
  • C08G 69/02 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids
  • C08K 3/013 - Fillers, pigments or reinforcing additives
  • C08K 7/02 - Fibres or whiskers

32.

POLYAMIDE COMPOSITION

      
Application Number JP2022046619
Publication Number 2023/120459
Status In Force
Filing Date 2022-12-19
Publication Date 2023-06-29
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Sugai, Naoto
  • Nanya, Atsushi

Abstract

The present invention provides a polyamide resin containing a polyamide (A) that contains a diamine unit (X) and a dicarboxylic acid unit (Y), and a halogen-based flame retardant (B). The diamine unit (X) contains from 0.1 mol% to less than 36 mol% of a diamine unit (X1), and the diamine unit (X1) is a structural unit derived from a C6–10 aliphatic diamine in which, taking the carbon atom to which any one amino group is bonded as position 1, a C2 or C3 alkyl group is bonded to the carbon atom at position 2.

IPC Classes  ?

  • C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
  • C08G 69/02 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids
  • C08L 25/18 - Homopolymers or copolymers of aromatic monomers containing elements other than carbon and hydrogen

33.

POLYAMIDE COMPOSITION

      
Application Number JP2022046621
Publication Number 2023/120461
Status In Force
Filing Date 2022-12-19
Publication Date 2023-06-29
Owner KURARAY CO., LTD. (Japan)
Inventor Nanya, Atsushi

Abstract

The present invention provides a polyamide composition which contains a polyamide (A) and a fibrous filler (B), wherein: the polyamide (A) contains a diamine unit (X) and a dicarboxylic acid unit (Y); the diamine unit (X) contains not less than 0.1% by mole but less than 36% by mole of a diamine unit (X1); and the diamine unit (X1) is a constituent unit that is derived from an aliphatic diamine which has 6 to 10 carbon atoms, wherein if a carbon atom to which an arbitrary one of the amino groups is bonded is taken to be in the 1-position, an alkyl group having 2 or 3 carbon atoms is bonded to the carbon atom in the 2-position.

IPC Classes  ?

  • C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
  • C08G 69/02 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids
  • C08K 7/02 - Fibres or whiskers

34.

COMPLEX

      
Application Number JP2022046622
Publication Number 2023/120462
Status In Force
Filing Date 2022-12-19
Publication Date 2023-06-29
Owner KURARAY CO., LTD. (Japan)
Inventor Nanya, Atsushi

Abstract

This complex includes a polyamide (A) and a continuous fiber (B). The polyamide (A) comprises a diamine unit (X) and a dicarboxylic acid unit (Y). The diamine unit (X) includes a diamine unit (X1) in an amount of 0.1 mol% or more but less than 36 mol%. The diamine unit (X1) is a structural unit derived from an aliphatic diamine which has 6 to 10 carbon atoms and in which, if a carbon atom to which either one of the amino groups is bonded is taken to be at the 1-position, an alkyl group having 2 or 3 carbon atoms is bonded to the carbon atom at the 2-position.

IPC Classes  ?

  • C08J 5/04 - Reinforcing macromolecular compounds with loose or coherent fibrous material
  • C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
  • C08K 7/02 - Fibres or whiskers
  • C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids

35.

MULTI-LAYER FILM, AND MULTI-LAYER STRUCTURE USING SAME

      
Application Number JP2022047364
Publication Number 2023/120642
Status In Force
Filing Date 2022-12-22
Publication Date 2023-06-29
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kitamura, Masahiro
  • Muramoto, Takuya
  • Yoshida, Kentaro

Abstract

Provided is a multi-layer film which has a layer (X) serving as the outermost layer and in which at least the layer (X), a layer (Y), and a layer (Z) are laminated adjacent to each other in this order, wherein: the layer (X) comprises a resin composition (A) that contains, as the main component thereof, a modified ethylene-vinyl alcohol copolymer (a) which has been modified by an epoxy compound and the melting point of which is not less than 110°C but less than 150°C; the layer (Y) contains, as the main component thereof, an adhesive resin (B), the melting point of which is less than 150°C; the layer (Z) contains, as the main component thereof, a polyethylene resin (C), the melting point of which is less than 150°C; and the resin composition (A) contains 20-1,500 ppm of alkali metal ions (b). This multi-layer film is excellent in terms of external appearance, interlayer adhesiveness, gas barrier properties, and blocking resistance, even while having as the outermost layer thereof a modified EVOH that has been modified with an epoxy compound.

IPC Classes  ?

  • B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
  • B29B 17/04 - Disintegrating plastics
  • B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C 55/04 - Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
  • B29C 55/12 - Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
  • B32B 27/32 - Layered products essentially comprising synthetic resin comprising polyolefins
  • B65D 65/40 - Applications of laminates for particular packaging purposes

36.

POLYVINYL ALCOHOL FIBER AND METHOD FOR PRODUCING SAME

      
Application Number JP2022045689
Publication Number 2023/112895
Status In Force
Filing Date 2022-12-12
Publication Date 2023-06-22
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Hirotani Ran
  • Koizumi Satoshi
  • Koga Nobuhiro
  • Tsujimoto Takuya

Abstract

ABABB represents the degree of saponification of the polyvinyl alcohol B.

IPC Classes  ?

  • D01F 6/50 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyalcohols, polyacetals or polyketals
  • D01F 6/34 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising unsaturated alcohols, acetals, or ketals as the major constituent
  • D04H 3/007 - Addition polymers

37.

MULTILAYER FILM, MULTILAYER STRUCTURE, PACKAGING MATERIAL, RECOVERY COMPOSITION, AND METHOD FOR RECOVERING MULTILAYER FILM OR MULTILAYER STRUCTURE

      
Application Number JP2022045916
Publication Number 2023/112929
Status In Force
Filing Date 2022-12-13
Publication Date 2023-06-22
Owner KURARAY CO., LTD. (Japan)
Inventor Yoshida Kentaro

Abstract

This multilayer film has: a barrier layer (A) containing as the main component thereof an ethylene-vinyl alcohol copolymer (a) having an ethylene unit content of 20-50 mol% and a degree of saponification of at least 90 mol%; an adhesive layer (B) containing as the main component thereof an adhesive resin (b); and a hot melt bonding layer (C) containing as the main component thereof an ethylene-α-olefin copolymer resin (c) that has a density of 0.880-0.920 g/cm3. The multilayer film does not have: a layer containing as the main component thereof a resin having a melting point of 200°C or more; or a metal layer having a thickness of 1 µm or more. The hot melt bonding layer (C) contains 100-7,000 ppm of a higher fatty acid amide compound (d) that has a melting point of 60-120°C.

IPC Classes  ?

  • B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
  • B65D 65/40 - Applications of laminates for particular packaging purposes

38.

MODIFIED HYDROGENATED BLOCK COPOLYMER AND RESIN COMPOSITION

      
Application Number JP2022046282
Publication Number 2023/112996
Status In Force
Filing Date 2022-12-15
Publication Date 2023-06-22
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kato, Masahiro
  • Senda, Yasushi
  • Satani, Ryo

Abstract

Provided is a modified product of a hydrogenated product of a block copolymer in which a resin composition having an excellent balance of mechanical properties such as tensile strength, tensile strain at break, and impact resistance can be obtained by addition. A modified hydrogenated product of a block copolymer includes a polymer block containing a structural unit derived from an aromatic vinyl compound and a polymer block containing a structural unit derived from a conjugated diene compound, wherein: the conjugated diene compound contains isoprene and a conjugated diene compound other than isoprene; the vinyl bonding amount of the polymer block is at most 30 mol%; and the modified hydrogenated product has one or more functional groups selected from among an alkoxysilyl group, a carboxy group, an amino group, a hydroxy group, an epoxy group, and an acid anhydride-derived group, has a peak top intensity of loss tangent of at most 0.95, and has a melt flow rate (MFR) of at least 0.5 g/10 min.

IPC Classes  ?

  • C08F 8/04 - Reduction, e.g. hydrogenation
  • C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
  • C08L 53/02 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
  • C08L 101/00 - Compositions of unspecified macromolecular compounds

39.

NAPPED ARTIFICIAL LEATHER AND METHOD FOR PRODUCING NAPPED ARTIFICIAL LEATHER

      
Application Number JP2022044801
Publication Number 2023/106272
Status In Force
Filing Date 2022-12-06
Publication Date 2023-06-15
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Iwamoto, Akihisa
  • Meguro, Masashi
  • Hishida, Hiroyuki

Abstract

Provided is napped artificial leather that makes it possible to suppress spontaneous elongation during the manufacturing process and set the constant load elongation horizontal/vertical ratio to an appropriate value without a scrim or lining, and that has excellent pilling resistance and appearance, and also provided is a method for producing the napped artificial leather. The napped artificial leather includes a nonwoven fabric that is an entangled body of ultrafine fibers and a polymer elastic body attached to the nonwoven fabric, and has a napped surface on which the ultrafine fibers are raised on at least one surface, the napped artificial leather satisfying the following conditions (1) and (2). (1) The nonwoven fabric is made of ultrafine polyester filaments. (2) The fiber density D1 in the horizontal direction is 150-450 fibers/mm2, the fiber density D2 in the vertical direction is 150-450 fibers/mm2, and D1/D2 is 0.7-1.1.

IPC Classes  ?

  • D06N 3/00 - Artificial leather, oilcloth, or like material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
  • B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
  • D04H 3/011 - Polyesters
  • D04H 3/016 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the fineness

40.

INORGANIC/ORGANIC COMPOSITE, AEROGEL PRODUCTION INTERMEDIATE, AND PRODUCTION METHOD FOR AEROGEL

      
Application Number JP2022045391
Publication Number 2023/106386
Status In Force
Filing Date 2022-12-09
Publication Date 2023-06-15
Owner KURARAY CO., LTD. (Japan)
Inventor Muguruma, Shinichi

Abstract

The present disclosure provides a production method for an aerogel that makes it possible to efficiently dry a wet gel at low cost without the need for an expensive apparatus and to suppress shrinkage and associated cracking during the drying of the wet gel. This production method for an aerogel includes a step (S1) for preparing a starting material liquid that includes a metal compound and at least one type of solvent selected from the group that consists of water and water-soluble solvents, a step (S2) for performing a condensation reaction on the metal compound in the starting material liquid to generate a wet gel in which the solvent is present in the pores of an aerogel, a step (S3) for substituting a polymerizable liquid material for the solvent in the pores of the wet gel, a step (S4) for polymerizing the polymerizable liquid material in the pores of the wet gel to generate an inorganic/organic composite in which a polymer is present in the pores of an aerogel, and a step (S5) for decomposing and thereby removing the polymer in the pores of the inorganic/organic composite.

IPC Classes  ?

  • C01B 33/16 - Preparation of silica xerogels
  • C08F 283/12 - Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass on to polysiloxanes
  • C08G 77/04 - Polysiloxanes
  • C08L 83/04 - Polysiloxanes
  • C08L 85/00 - Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing atoms other than silicon, sulfur, nitrogen, oxygen, and carbon; Compositions of derivatives of such polymers
  • C08L 101/00 - Compositions of unspecified macromolecular compounds
  • C08F 2/44 - Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
  • C08J 9/42 - Impregnation with macromolecular compounds

41.

CELL CULTURE METHOD USING SERUM-FREE CULTURE MEDIUM

      
Application Number JP2022044352
Publication Number 2023/100974
Status In Force
Filing Date 2022-12-01
Publication Date 2023-06-08
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Yamazaki, Satoshi
  • Fujita, Akio
  • Kobayashi, Goro
  • Ayano, Satoru

Abstract

The problem to be solved by the present invention is to provide a method which makes it possible to culture anchorage-dependent cells with a serum-free culture medium. The present invention provides a cell culture method including a step for culturing cells with a serum-free culture medium while adhering the cells to a crosslinked product of a water-soluble polymer that is compounded with a cell adhesion factor.

IPC Classes  ?

  • C12N 5/07 - Animal cells or tissues
  • C07K 17/00 - Carrier-bound or immobilised peptides; Preparation thereof

42.

ELECTRODE AND POWER STORAGE ELEMENT

      
Application Number JP2022042427
Publication Number 2023/090325
Status In Force
Filing Date 2022-11-15
Publication Date 2023-05-25
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Hasenaka, Yuki
  • Tachikawa, Kengo

Abstract

The present invention relates to an electrode which comprises at least graphite, a binder and a non-graphite carbonaceous material. If a half cell is produced using this electrode as a working electrode, an Li foil as a reference electrode, and a solution obtained by dissolving lithium hexafluorophosphate at a concentration of 1 mol/L into a mixed solution of ethylene carbonate, dimethyl carbonate and ethyl methyl carbonate as an electrolyte solution, the mixed solution having an (ethylene carbonate)/(dimethyl carbonate)/(ethyl methyl carbonate) volume ratio of 1/1/1, (A) with respect to a cyclic voltammogram obtained by doping the electrode with lithium until the cell voltage reaches 0.01 V, subsequently sweeping a potential at a sweep rate of 0.01 mV/s toward the reduction side until the cell voltage falls to -0.05 V from +0.01 V and further sweeping a potential toward the oxidation side until the cell voltage reaches +0.5 V by cyclic voltammetry, the ratio (A/B) of the area of the region A described below to the area of the region B described below is 4.0% or more, the areas being calculated on the basis of reference points E1, E2, E3 and E4 described below; and (B) the electrode mixture density at a depth of charge of 50% is 1.30 g/cm3 or more if the capacity at the time when the electrode is doped with lithium until the cell voltage reaches 0.05 V is taken as a depth of charge of 100%. Reference point E1: the point at which the absolute value of the current is minimum within the range of -0.05 V ≤ E1 ≤ 0.01 V on the current-voltage curve on the reduction side Reference point E2: the intersection point of the coordinate axis of the voltage (current is 0 mA) and a tangent line with the maximum slope within the range of -0.05 V ≤ E2 ≤ 0.01 V on the current-voltage curve on the reduction side Reference point E3: the point at which the absolute value of the current is minimum within the range of 0.05 V ≤ E3 ≤ 0.1 V on the current-voltage curve on the oxidation side Reference point E4: the point at which the voltage is 0.3 V on the current-voltage curve on the oxidation side Region A: the region surrounded by the current-voltage curve on the reduction side, a straight line that passes through the reference point E1 and is perpendicular to the coordinate axis of the voltage (current is 0 mA), a straight line that passes through the reference point E2 and is perpendicular to the coordinate axis of the voltage (current is 0 mA), and the coordinate axis of the voltage (current is 0 mA) Region B: the region surrounded by the current-voltage curve on the oxidation side, a straight line that passes through the reference point E3 and is perpendicular to the coordinate axis of the voltage (current is 0 mA), a straight line that passes through the reference point E4 and is perpendicular to the coordinate axis of the voltage (current is 0 mA), and the coordinate axis of the voltage (current is 0 mA)

IPC Classes  ?

  • H01M 4/133 - Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
  • H01M 4/36 - Selection of substances as active materials, active masses, active liquids
  • H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals

43.

REINFORCING FIBERS, METHOD FOR PRODUCING SAME, AND ELASTOMER PRODUCT USING REINFORCING FIBERS

      
Application Number JP2022042147
Publication Number 2023/085412
Status In Force
Filing Date 2022-11-11
Publication Date 2023-05-19
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Asada, Toru
  • Ishida, Eiichi
  • Washitake, Yosuke

Abstract

The present invention provides: reinforcing fibers which use an adhesive component that does not contain resorcinol and formalin, and which exhibit excellent adhesion especially to a rubber adherend that has high polarity; a method for producing the reinforcing fibers; and an elastomer product which uses the reinforcing fibers. The present invention provides reinforcing fibers, each of which has an adhesive layer that is configured from an adhesive component containing a liquid conjugated diene rubber and a crosslinking agent on at least a part of the fiber surface, and which are characterized in that the solubility parameter (SP value) of the liquid conjugated diene rubber as calculated by a Fedors method is larger than 9.0 (cal/cm3)1/2.

IPC Classes  ?

  • D06M 15/693 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
  • B60C 9/00 - Reinforcements or ply arrangement of pneumatic tyres
  • C09J 11/06 - Non-macromolecular additives organic
  • C09J 109/02 - Copolymers with acrylonitrile
  • D06M 13/17 - Polyoxyalkyleneglycol ethers
  • D06M 13/395 - Isocyanates
  • D06M 15/55 - Epoxy resins

44.

AQUEOUS ADHESIVE, REINFORCEMENT FIBERS USING SAME, AND ELASTOMER PRODUCT USING REINFORCEMENT FIBERS

      
Application Number JP2022042148
Publication Number 2023/085413
Status In Force
Filing Date 2022-11-11
Publication Date 2023-05-19
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Asada, Toru
  • Ishida, Eiichi
  • Washitake, Yosuke

Abstract

The present invention provides: an aqueous adhesive which uses an adhesive component that does not contain resorcinol and formalin, and which exhibits excellent adhesion between fibers and an elastomer, while being capable of suppressing contamination in a production step of reinforcement fibers; reinforcement fibers which use this aqueous adhesive; and an elastomer product which uses the reinforcement fibers. The present invention provides an aqueous adhesive for bonding fibers and an elastomer to each other, the aqueous adhesive being characterized by containing (A) an oil-in-water emulsion which contains a liquid conjugated diene rubber and a surfactant, and (B) an aqueous solution or aqueous dispersion of a crosslinking agent.

IPC Classes  ?

  • D06M 15/693 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
  • B60C 9/00 - Reinforcements or ply arrangement of pneumatic tyres
  • C09J 11/06 - Non-macromolecular additives organic
  • C09J 109/00 - Adhesives based on homopolymers or copolymers of conjugated diene hydrocarbons
  • D06M 13/17 - Polyoxyalkyleneglycol ethers
  • D06M 13/395 - Isocyanates
  • D06M 15/55 - Epoxy resins

45.

POROUS MOLDED PLATE

      
Application Number JP2022040788
Publication Number 2023/080122
Status In Force
Filing Date 2022-10-31
Publication Date 2023-05-11
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Hitomi, Yoshinori
  • Imagawa, Akira
  • Ogawa, Atsuhisa
  • Katsuya, Satoshi
  • Hada, Saburo

Abstract

The present invention pertains to a porous molded plate that contains 35-70 mass% of a substance not involved in a pozzolanic reaction, 20-61.5 mass% of a cement, 1-3 mass% of a synthetic fiber and 2.5-7 mass% of a pulp, wherein the ratio (B)/(A) is 1.70-6.0 [wherein (A) stands for the pore volume within the range of 660-9100 nm in the pore size distribution of the molded plate determined by the mercury injection method, and (B) stands for the pore volume within the range of 6-560 nm therein].

IPC Classes  ?

  • C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
  • C04B 14/04 - Silica-rich materials; Silicates
  • C04B 14/06 - Quartz; Sand
  • C04B 14/20 - Mica; Vermiculite
  • C04B 14/28 - Carbonates of calcium
  • C04B 16/02 - Cellulosic materials
  • C04B 16/06 - Macromolecular compounds fibrous
  • C04B 18/08 - Flue dust
  • C04B 18/14 - Waste materials; Refuse from metallurgical processes
  • C04B 38/00 - Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof

46.

POLYVINYL ALCOHOL FILM

      
Application Number JP2022039578
Publication Number 2023/074639
Status In Force
Filing Date 2022-10-24
Publication Date 2023-05-04
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kawasaki Emi
  • Tanabe Hirofumi
  • Okamoto Minoru
  • Kazeto Osamu

Abstract

Provided is a PVA film that can be used to manufacture a polarizing film exhibiting excellent polarization performance and heat and moisture resistance without increasing the number of steps required for manufacturing the polarizing film. The polyvinyl alcohol film is a water-insoluble polyvinyl alcohol film wherein when a cross-section, that emerged as a result of cutting the polyvinyl alcohol film perpendicular to a first surface and second surface of the polyvinyl alcohol film, is subjected to a nano-indentation test in air having a temperature of 23ºC and a RH of 40%, the composite elastic modulus is such that if the composite elastic modulus in the vicinity of the first surface is denoted by Er1 (GPa), the composite elastic modulus in the vicinity of the second surface is denoted by Er2 (GPa), and the composite elastic modulus of a center section in the thickness direction is denoted by Er3 (GPa), then Er1, Er2, and Er3 satisfy expression (1) and expression (2) below. (1): 0.40 ≦ Er1 - Er3 ≦ 1.20 (2): 0.40 ≦ Er2 - Er3 ≦ 1.20 [In expressions (1) and (2), Er1 is the composite elastic modulus of an area within 5 µm from the first surface toward the center section in the thickness direction, Er2 is the composite elastic modulus of an area within 5 µm from the second surface toward the center section in the thickness direction, and Er3 is the composite elastic modulus of the area of the center section in the thickness direction.]

IPC Classes  ?

  • G02B 5/30 - Polarising elements
  • C08J 5/18 - Manufacture of films or sheets
  • G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors

47.

POROUS MEMBRANE AND METHOD FOR MANUFACTURING POROUS MEMBRANE

      
Application Number JP2022039686
Publication Number 2023/074670
Status In Force
Filing Date 2022-10-25
Publication Date 2023-05-04
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Yabuno, Youhei
  • Matsumoto, Kazuki
  • Miyagawa, Naoki
  • Mizumoto, Yoshito

Abstract

One aspect of the present invention relates to a porous membrane having a porous structure, the porous membrane being characterized in that at least the porous structure of the membrane cross-section is observed in a cross-sectional surface cut at a discretionary cross-section in which at least the porous structure of the porous membrane can be observed, and, when fractal dimensions calculated using image data obtained by capturing an image of the porous structure at a discretionary image-capture position and a discretionary image-capture magnification are calculated under a plurality of conditions numbering at least two or more, all of the fractal dimensions calculated under each of the plurality of conditions are 1.5-1.9 (inclusive).

IPC Classes  ?

  • B01D 69/00 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
  • B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
  • B01D 69/08 - Hollow fibre membranes
  • C08J 9/26 - Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out

48.

FULL-GRAIN LEATHER-LIKE SHEET

      
Application Number JP2022040422
Publication Number 2023/074858
Status In Force
Filing Date 2022-10-28
Publication Date 2023-05-04
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Uesaka Mitsuharu
  • Takatori Yohei
  • Warita Masato

Abstract

This full-grain leather-like sheet is provided with a fiber substrate and a resin layer laminated on one surface of the fiber substrate, the resin layer includes at least one skin layer, and the skin layer contains polyurethane, a nonionic compound with an HLB value of 10-16, and a water-soluble polymer, and has a surface free energy with a 25-40 mJ/m2polar part and a 30-40 mJ/m2 dispersive part, analyzed with OWRK.

IPC Classes  ?

  • D06N 3/14 - Artificial leather, oilcloth, or like material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds with polyurethanes
  • B32B 5/00 - Layered products characterised by the non-homogeneity or physical structure of a layer
  • B32B 27/40 - Layered products essentially comprising synthetic resin comprising polyurethanes

49.

POLYAMIDE BLOCK COPOLYMER

      
Application Number JP2022039866
Publication Number 2023/074726
Status In Force
Filing Date 2022-10-26
Publication Date 2023-05-04
Owner KURARAY CO., LTD. (Japan)
Inventor Minamiguchi, Daiki

Abstract

Provided is a polyamide block copolymer containing: a polymer block (A) that contains at least 50 mol% of a structural unit derived from a polyamide; and a polymer block (B) that contains at least 50 mol% of a structural unit derived from at least one substance selected from the group consisting of polyethers and polyesters, wherein the polymer block (B) has a glass transition temperature of 20°C or lower and a melting point of 230°C or higher.

IPC Classes  ?

  • C08G 81/00 - Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers

50.

BINDER FOR POWER STORAGE DEVICES, BINDER SOLUTION FOR POWER STORAGE DEVICES, POWER STORAGE DEVICE ELECTRODE SLURRY, POWER STORAGE DEVICE ELECTRODE, AND POWER STORAGE DEVICE

      
Application Number JP2022040885
Publication Number 2023/074910
Status In Force
Filing Date 2022-11-01
Publication Date 2023-05-04
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Tachikawa Kengo
  • Kanno Momotaro
  • Nii Shinsuke
  • Kurashima Kenta

Abstract

Provided is a binder for power storage devices, that provides an excellent peel strength when used in an electrode and that is favorable for obtaining a low-resistance electrode. Also provided are a binder solution for power storage devices, a power storage device electrode slurry, a power storage device electrode, and a power storage device. The binder for power storage devices contains a modified vinyl alcohol polymer that has a 0.05-10 mol% content of structural units deriving from (A) ethylenically unsaturated dicarboxylic acid derivatives and that has a degree of saponification of 70.0-99.9 mol%. The amount of insoluble component in the modified vinyl alcohol polymer, considered for the aqueous solution prepared with a 5 mass% concentration thereof and residing at 90°C, is from 0.1 ppm to less than 2,000 ppm.

IPC Classes  ?

  • H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
  • H01G 11/06 - Hybrid capacitors with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC]
  • H01G 11/38 - Carbon pastes or blends; Binders or additives therein
  • H01M 4/13 - Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
  • H01M 4/139 - Processes of manufacture

51.

Β-METHYL-δ-VALEROLACTONE POLYMER

      
Application Number JP2022039196
Publication Number 2023/068345
Status In Force
Filing Date 2022-10-20
Publication Date 2023-04-27
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Ishio, Muneki
  • Sano, Yuki
  • Hosaka, Yusaku

Abstract

A β-Methyl-δ-valerolactone polymer is represented by general formula (I) and has a number average molecular weight of 2,000 to 100,000.

IPC Classes  ?

  • C08G 63/08 - Lactones or lactides
  • C08L 101/16 - Compositions of unspecified macromolecular compounds the macromolecular compounds being biodegradable

52.

Β-METHYL-δ-VALEROLACTONE POLYMER

      
Application Number JP2022039197
Publication Number 2023/068346
Status In Force
Filing Date 2022-10-20
Publication Date 2023-04-27
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Ishio, Muneki
  • Sano, Yuki
  • Hosaka, Yusaku

Abstract

A β-Methyl-δ-valerolactone polymer is represented by general formula (I).

IPC Classes  ?

  • C08G 63/08 - Lactones or lactides
  • C08L 101/16 - Compositions of unspecified macromolecular compounds the macromolecular compounds being biodegradable

53.

METHOD FOR PRODUCING β-METHYL-δ-VALEROLACTONE POLYMER

      
Application Number JP2022039198
Publication Number 2023/068347
Status In Force
Filing Date 2022-10-20
Publication Date 2023-04-27
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Ishio, Muneki
  • Sano, Yuki
  • Hosaka, Yusaku

Abstract

A method for producing a β-methyl-δ-valerolactone polymer, including a step of: adding an end modifier in a reaction solution in which a β-methyl-δ-valerolactone, an alcohol compound or water, and a base catalyst have been reacted; and carrying out an end modifying reaction.

IPC Classes  ?

  • C08G 63/91 - Polymers modified by chemical after-treatment

54.

RESIN COMPOSITION

      
Application Number JP2022039199
Publication Number 2023/068348
Status In Force
Filing Date 2022-10-20
Publication Date 2023-04-27
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Ishio, Muneki
  • Sano, Yuki
  • Hosaka, Yusaku

Abstract

A resin composition containing a polylactic acid polymer and a β-methyl-δ-valerolactone polymer.

IPC Classes  ?

  • C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones
  • C08G 63/08 - Lactones or lactides
  • C08G 63/83 - Alkali metals, alkaline earth metals, beryllium, magnesium, copper, silver, gold, zinc, cadmium, mercury, manganese, or compounds thereof

55.

CARBONACEOUS MATERIAL, NEGATIVE ELECTRODE FOR POWER STORAGE DEVICES, POWER STORAGE DEVICE, AND METHOD FOR PRODUCING CARBONACEOUS MATERIAL

      
Application Number JP2022035918
Publication Number 2023/058500
Status In Force
Filing Date 2022-09-27
Publication Date 2023-04-13
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Nishimura, Keiichi
  • Nishimura, Naohiro
  • Nishiumi, Kosuke

Abstract

The present invention relates to a carbonaceous material which has an elemental nitrogen content of not less than 1.0 mass% as determined by elemental analysis, an elemental hydrogen content of not more than 0.1 mass% as determined by elemental analysis, and an elemental phosphorus content of 0.5-2.0 mass% as determined by X-ray fluorescence analysis.

IPC Classes  ?

  • C01B 32/00 - Carbon; Compounds thereof
  • C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,
  • C04B 35/52 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite
  • H01G 11/24 - Electrodes characterised by the structural features of powders or particles used therefor
  • H01G 11/42 - Powders or particles, e.g. composition thereof
  • H01G 11/86 - Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
  • H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals

56.

MULTILAYER STRUCTURE AND METHOD FOR PRODUCING SAME, PROTECTIVE SHEET FOR ELECTRONIC DEVICE USING SAID MULTILAYER STRUCTURE, AND ELECTRONIC DEVICE

      
Application Number JP2022037368
Publication Number 2023/058702
Status In Force
Filing Date 2022-10-06
Publication Date 2023-04-13
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kuzume Shuhei
  • Oshita Tatsuya

Abstract

Provided are: a multilayer structure having high barrier properties and clarity and a method for producing the same; a protective sheet for an electronic device using the multilayer structure; and an electronic device. This multilayer structure includes a substrate (X) and a layer (Y). The layer (Y) contains a reaction product (D) of a metal oxide (A) that includes aluminum atoms, and an inorganic phosphorous compound (BI). The substrate (X) and the layer (Y) are contiguous. The image clarity of the multilayer structure with an optical comb width of 0.25 mm when measured according to ISO17221:2014 is 90% or more.

IPC Classes  ?

  • B32B 9/00 - Layered products essentially comprising a particular substance not covered by groups

57.

CARBONACEOUS MATERIAL, NEGATIVE ELECTRODE FOR POWER STORAGE DEVICE, POWER STORAGE DEVICE, AND METHOD FOR PRODUCING CARBONACEOUS MATERIAL

      
Application Number JP2022035912
Publication Number 2023/058499
Status In Force
Filing Date 2022-09-27
Publication Date 2023-04-13
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Nishimura, Keiichi
  • Nishimura, Naohiro
  • Nishiumi, Kosuke

Abstract

The present invention relates to a carbonaceous material having: a nitrogen element content according to elemental analysis of at least 1.0 mass%; and a phosphorous element content according to X-ray fluorescence analysis of at least 0.5 mass%.

IPC Classes  ?

  • C01B 32/00 - Carbon; Compounds thereof
  • C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,
  • C04B 35/52 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite
  • H01G 11/24 - Electrodes characterised by the structural features of powders or particles used therefor
  • H01G 11/42 - Powders or particles, e.g. composition thereof
  • H01G 11/86 - Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
  • H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals

58.

LIQUID CRYSTAL POLYESTER FIBERS AND METHOD FOR PRODUCING SAME

      
Application Number JP2022036593
Publication Number 2023/058563
Status In Force
Filing Date 2022-09-29
Publication Date 2023-04-13
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Teramoto, Yukihiro
  • Tsujimoto, Takuya
  • Kamada, Hideki

Abstract

Provided are liquid crystal polyester fibers that generate less gas when heated and that have excellent hue. The liquid crystal polyester fibers have a total carboxy end group amount (total CEG amount) of not more than 5.0 meq/kg and have a ketone bond amount of not more than 0.05 mol%. For example the liquid crystal polyester fibers may have a melting point of not more than 380°C. The liquid crystal polyester fibers may have a strength of less than 18 cN/dtex. Further, the liquid crystal polyester fibers may contain a liquid crystal polyester which has not less than 50 mol% of a structural unit derived from 4-hydroxybenzoic acid.

IPC Classes  ?

  • D01F 6/84 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyesters

59.

LEATHER-TEXTURED LIGHT-EMITTING DISPLAY DEVICE

      
Application Number JP2022037068
Publication Number 2023/058633
Status In Force
Filing Date 2022-10-04
Publication Date 2023-04-13
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Matsuda Daisuke
  • Warita Masato
  • Makiyama Norio

Abstract

This leather-textured light-emitting display device includes: a leather-textured sheet that is a laminate of a colored resin layer that forms an outer surface layer, and a fibrous base material; a light-emitting part that is provided below the leather-like sheet; and a light-blocking part that is provided in one of the layers between the colored resin layer and the light-emitting part, and that partially restricts light transmission. The leather-textured light-emitting display device exhibits light-emitting display in which the luminance Ya of a non-light-emitting display region corresponding to the light-blocking part as measured from the surface of the colored resin layer is at most 200 cd/m2, the luminance Yb of a light-emitting display region corresponding to a portion excluding the light-blocking part as measured from a surface of the colored resin layer is 100-2,000 cd/m2, and Yb/Ya is at least 2.0.

IPC Classes  ?

  • G09F 13/12 - Signs, boards, or panels, illuminated from behind the insignia using a transparent mirror or other light- reflecting surface transparent to transmitted light whereby a sign, symbol, picture, or other information is visible only when illuminated
  • D06N 3/00 - Artificial leather, oilcloth, or like material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
  • G09F 13/04 - Signs, boards, or panels, illuminated from behind the insignia

60.

PELLET CONTAINING ETHYLENE-VINYL ALCOHOL COPOLYMER AND METHOD FOR PRODUCING SAME

      
Application Number JP2022037692
Publication Number 2023/058761
Status In Force
Filing Date 2022-10-07
Publication Date 2023-04-13
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Hoshika, Rina
  • Kurashima, Erika
  • Sakano, Takeshi

Abstract

The present invention provides a pellet which contains particles and an EVOH having a saponification degree of 90% by mole or more, while being cut into a cylindrical shape; the pellet has a melting enthalpy ∆Hm (J/g) of 65 (J/g) or less; the pellet contains 5 ppm to 5,000 ppm of particles that have an average particle diameter R of 1 µm to 30 µm; the pellet has a length L (mm); recesses are formed in the lateral surface or the cut surface of the pellet; in cases where the recesses are formed in the lateral surface, the number n of the recesses is 2 to 5; at least in one cross-section that is perpendicular to the flowing direction of the pellet at a position that is L/4 (mm) or less from the center of gravity of the pellet, the distances α1 to αn respectively from the center of gravity of the cross-section to the peripheries of the recesses formed in the lateral surface and the distances β1 to βn respectively from the center of gravity of the cross-section to the bottoms of the recesses formed in the lateral surface satisfy formula (1) (β1 + β2 ∙∙∙ + βn)/(α1 + α2 ∙∙∙ + αn) ≤ 0.8; in cases where the recesses are formed in the cut surface, the ratio D/L of the depth D (mm) of the recesses formed in the cut surface to the length L (mm) of the pellet is 0.1 or more; the surface of the pellet is provided with a projection that has a height H of 0.1 µm to 15 µm; the projection contains the particles; and the particles are covered with the EVOH. The pellet enables the achievement of a molded article that exhibits excellent flexibility, while having excellent blocking resistance. In addition, the pellet has excellent extrusion stability.

IPC Classes  ?

  • C08J 3/215 - Compounding polymers with additives, e.g. colouring in the presence of a liquid phase the polymer being premixed with a liquid phase at least one additive being also premixed with a liquid phase
  • C08F 8/10 - Acylation
  • C08K 3/20 - Oxides; Hydroxides
  • C08K 3/34 - Silicon-containing compounds
  • C08K 5/098 - Metal salts of carboxylic acids
  • C08K 5/20 - Carboxylic acid amides
  • C08L 29/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids

61.

RESIN COMPOSITION, MOLDED BODY, MULTILAYER STRUCTURE, THERMALLY MOLDED CONTAINER, BLOW MOLDED CONTAINER, AND DEPOSITED FILM

      
Application Number JP2022036247
Publication Number 2023/054506
Status In Force
Filing Date 2022-09-28
Publication Date 2023-04-06
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Oshita Mizuko
  • Hasegawa Tatsuya
  • Yoshida Kentaro
  • Okamoto Minoru
  • Okada Kimio

Abstract

123123233≤0.65

IPC Classes  ?

  • C08L 29/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
  • B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
  • C08F 8/28 - Condensation with aldehydes or ketones
  • C08K 5/07 - Aldehydes; Ketones
  • C08K 5/09 - Carboxylic acids; Metal salts thereof; Anhydrides thereof

62.

EXTRUDED RESIN LAMINATED FILM AND METHOD FOR PRODUCING SAME

      
Application Number JP2022036309
Publication Number 2023/054533
Status In Force
Filing Date 2022-09-28
Publication Date 2023-04-06
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Funazaki, Kazuo
  • Kodera, Jumpei
  • Ozawa, Yushi
  • Yamashita, Kouhei
  • Ninomiya, Masato

Abstract

The present disclosure provides a method for producing an extruded resin laminated film that undergoes little optical distortion and little change in the orientation axis thereof. A laminate having a (meth)acrylic-resin-containing layer laminated on at least one surface of a polycarbonate-containing layer is co-extruded from a T die in a molten state and is cooled using three or more cooling rolls, and the resultant extruded resin laminated film is taken off using a take-off roll. The laminate is interposed between a first cooling roll and a second cooling roll without creating a bank, an elastic metal roll being used as the first cooling roll, and a rigid metal roll being used as the second cooling roll. The overall temperature of the laminate when detached from the final cooling roll ranges from –40°C to –5°C relative to the glass transition temperature of the polycarbonate-containing layer. V2 is the circumferential velocity of the second cooling roll, V3 is the circumferential velocity of the third cooling roll, and V4 is the circumferential velocity of the take-off roll. Both V3/V2 and V4/V2 are set at 0.980-1.000.

IPC Classes  ?

  • B29C 48/92 - Measuring, controlling or regulating
  • B29C 48/21 - Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
  • B29C 48/305 - Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
  • B29C 48/88 - Thermal treatment of the stream of extruded material, e.g. cooling
  • B32B 27/30 - Layered products essentially comprising synthetic resin comprising acrylic resin
  • B32B 27/36 - Layered products essentially comprising synthetic resin comprising polyesters
  • B32B 37/14 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers

63.

AMBULATORY PEST TRAPPING DEVICE

      
Application Number JP2022036694
Publication Number 2023/054674
Status In Force
Filing Date 2022-09-30
Publication Date 2023-04-06
Owner
  • KURARAY TRADING CO., LTD. (Japan)
  • NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY (Japan)
  • KURARAY CO., LTD. (Japan)
Inventor
  • Akiba Eiji
  • Suzuki Takeshi
  • Takasuka Yuki

Abstract

An ambulatory pest trapping device (1) comprises: an upper sheet (2) on which an ambulatory pest B may crawl; a lower sheet (4) provided opposite to the upper sheet (2) and on which the ambulatory pest B may crawl; and an adhesive sheet (8) provided between the upper sheet (2) and the lower sheet (4) and in which an intermediate sheet (3) is covered with an adhesive (5). A rib-like pointed portion (7) configured with the adhesive (5) covering an end portion of the intermediate sheet (3) is provided in the adhesive sheet (8). A tip radius of curvature of the pointed portion (7) is between 0.001 and 1.0 mm inclusive.

IPC Classes  ?

64.

THERMOPLASTIC POLYURETHANE FOR POLISHING LAYER, POLISHING LAYER, AND POLISHING PAD

      
Application Number JP2022035870
Publication Number 2023/054331
Status In Force
Filing Date 2022-09-27
Publication Date 2023-04-06
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Sunayama, Azusa
  • Goshi, Yuko
  • Kato, Mitsuru

Abstract

Provided is a thermoplastic polyurethane for a polishing layer in which the D hardness in a sheet with a thickness of 2 mm after saturating the sheet with water at a temperature of 50ºC and causing the sheet to swell is less than 50, and in which the contact angle with water in a sheet with a thickness of 200 μm is 70 degrees or less.

IPC Classes  ?

  • B24B 37/24 - Lapping pads for working plane surfaces characterised by the composition or properties of the pad materials
  • C08G 18/48 - Polyethers
  • C08G 18/66 - Compounds of groups , , or
  • C08J 5/14 - Manufacture of abrasive or friction articles or materials
  • H01L 21/304 - Mechanical treatment, e.g. grinding, polishing, cutting

65.

CREPING ADHESIVE, POWDER FOR CREPING ADHESIVE, METHOD FOR PRODUCING CREPING ADHESIVE, AND TOILET PAPER, TISSUE PAPER, TOWEL PAPER, KITCHEN PAPER OR NAPKIN BASE PAPER

      
Application Number JP2022036838
Publication Number 2023/054707
Status In Force
Filing Date 2022-09-30
Publication Date 2023-04-06
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Taoka Yuta
  • Fujimori Misuzu

Abstract

Provided is a creping adhesive or the like having favorable stringiness and wet adhesion. This creping adhesive contains PVA (A) and satisfies at least one of (i) and (ii) below. (i) The PVA (A) contains PVA having a minimum branching degree of 0.25−0.93 (inclusive) in an absolute molecular weight range of 200,000−800,000 (inclusive), and the ratio Mw/Mn of the weight-average molecular weight Mw to the number-average molecular weight Mn of the PVA (A) is 2.5 or more. (ii) The ratio Mw/Mn of the weight-average molecular weight Mw to the number-average molecular weight Mn of the PVA (A) is 3.8 or more.

IPC Classes  ?

  • D21H 27/00 - Special paper not otherwise provided for, e.g. made by multi-step processes
  • C09J 129/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
  • C09J 177/00 - Adhesives based on polyamides obtained by reactions forming a carboxylic amide link in the main chain; Adhesives based on derivatives of such polymers
  • D21F 5/02 - Drying on cylinders
  • D21H 17/36 - Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
  • D21H 19/20 - Coatings without pigments applied in a form other than the aqueous solution defined in group comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D21H 21/14 - Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper

66.

WATER-SOLUBLE FILM, PRODUCTION METHOD, AND PACKAGE

      
Application Number JP2022036859
Publication Number 2023/054720
Status In Force
Filing Date 2022-09-30
Publication Date 2023-04-06
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kazeto Osamu
  • Takafuji Masahiro

Abstract

The present invention provides a water-soluble film that, in addition to exhibiting consistently high water-solubility, tends not to experience any deterioration in outward appearance over time in extended storage under high temperatures even when chemicals such as laundry detergents are wrapped therewith, said water-soluble film containing polyvinyl alcohol that has a degree of polymerization of 100–3000 and containing a polyhydric alcohol plasticizer in an amount of 1–50 mass parts per 100 mass parts of polyvinyl alcohol, wherein an article obtained by wrapping a model detergent has a weight-loss rate of 1.0–6.0 g/(m2∙day), said water-soluble film has an elastic modulus of 9–35 MPa under 100% stretching in a tensile test after having been immersed in a model detergent for 24 hrs, and completely dissolves in 100 s or less when immersed in 5°C deionized water after having been immersed in a model detergent for 24 hrs. The present invention further provides a method for producing said water-soluble film, and a wrapped article in which a chemical is wrapped using the water-soluble film.

IPC Classes  ?

  • C08J 5/18 - Manufacture of films or sheets
  • B65D 65/46 - Applications of disintegrable, dissolvable or edible materials

67.

WATER-SOLUBLE FILM, PRODUCTION METHOD AND PACKAGE

      
Application Number JP2022036860
Publication Number 2023/054721
Status In Force
Filing Date 2022-09-30
Publication Date 2023-04-06
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kazeto Osamu
  • Takafuji Masahiro

Abstract

The present invention provides: a water-soluble film which is not susceptible to the occurrence of a decrease in the sealing strength, while maintaining good water solubility in cases where a chemical agent such as a laundry detergent is packed therewith and stored for a long period of time; a method for producing this water-soluble film; and a package which is obtained by packing a chemical agent with use of this water-soluble film. The present invention provides a water-soluble film which contains a polyvinyl alcohol that has a polymerization degree of 100 to 3,000, while containing 1 to 50 parts by mass of a polyhydric alcohol-based plasticizer per 100 parts by mass of the polyvinyl alcohol, wherein: the contact angle at 6 seconds after the dropping is 20° to 35° if the water-soluble film is immersed in a model detergent for 24 hours and deionization water is subsequently dropped on the film surface; the time required for complete dissolution of the water-soluble film is 100 seconds or less if the water-soluble film is immersed in deionization water at 5°C after being immersed in a model detergent for 24 hours; and the swelling degree of the water-soluble film is 30% to 50% if the water-soluble film is immersed in a model detergent for one hour.

IPC Classes  ?

  • C08J 5/18 - Manufacture of films or sheets
  • B65D 65/46 - Applications of disintegrable, dissolvable or edible materials

68.

MULTILAYER STRUCTURE, METHOD FOR SEPARATING SAME, AND RECYCLING METHOD

      
Application Number JP2022035402
Publication Number 2023/048241
Status In Force
Filing Date 2022-09-22
Publication Date 2023-03-30
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Ishiuchi Satoshi
  • Yoshida Kentaro

Abstract

A multilayer structure in which a layer structure (X) and a layer structure (Y) are laminated with a water-soluble layer (A) interposed therebetween, the layer structure (X) being provided with a substrate layer (B) containing at least one selected from the group consisting of thermoplastic resins and metals, the layer structure (Y) being provided with a polyolefin layer (D) or a paper layer, the difference in density (X−Y) between the layer structure (X) and the layer structure (Y) being 0.2 g/cm3or greater, the oxygen transmission rate (OTR) of at least one of the layer structure (X) and the layer structure (Y) at 20°C and 65% RH as measured in conformance with JIS K7126-2 (uniform pressure method; 2006) being 20 cc/(m2·day·atm) or less, the water-soluble layer (A) containing a hydroxyl-group-containing resin (a1) and alkali metal ions (a2), and the alkali metal ion (a2) content of the water-soluble layer (A) being 10-2000 ppm (inclusive).

IPC Classes  ?

  • B32B 27/18 - Layered products essentially comprising synthetic resin characterised by the use of special additives
  • B32B 27/30 - Layered products essentially comprising synthetic resin comprising acrylic resin
  • B32B 27/32 - Layered products essentially comprising synthetic resin comprising polyolefins
  • B65D 65/40 - Applications of laminates for particular packaging purposes
  • C08J 11/12 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by dry-heat treatment only

69.

MULTILAYER STRUCTURE WITH AN IMPROVED HYDROGEN BARRIER

      
Application Number JP2022034680
Publication Number 2023/048073
Status In Force
Filing Date 2022-09-16
Publication Date 2023-03-30
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Shimo, Hiroyuki
  • Geboes, Yannick
  • Winckelmans, Naomi

Abstract

The present invention relates to a multilayer structure for storing or transporting a gas comprising hydrogen, wherein the multilayer structure comprises at least three layers comprising an inner layer comprising at least one first polymer, a middle layer comprising ethylene-vinyl alcohol copolymer, and an outer layer comprising at least one second polymer, and wherein the water-vapour transmission rate of the inner layer is lower than that of the outer layer. The multilayer structure has excellent hydrogen gas barrier properties. Therefore, the multilayer structure is suitable for a hydrogen storage vessel and a hydrogen transportation pipe.

IPC Classes  ?

  • B32B 27/30 - Layered products essentially comprising synthetic resin comprising acrylic resin
  • B32B 27/32 - Layered products essentially comprising synthetic resin comprising polyolefins
  • B32B 27/34 - Layered products essentially comprising synthetic resin comprising polyamides
  • F16L 11/04 - Hoses, i.e. flexible pipes made of rubber or flexible plastics
  • F17C 1/16 - Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of plastics materials

70.

POLISHING PAD

      
Application Number JP2022035517
Publication Number 2023/048265
Status In Force
Filing Date 2022-09-22
Publication Date 2023-03-30
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Goshi Yuko
  • Kato Mitsuru
  • Sugioka Takashi

Abstract

A polishing pad including a polishing layer that is a molded product of a polyurethane composition, in which the polyurethane composition comprises 90 to 99.9% by mass of a thermoplastic polyurethane containing a non-alicyclic diisocyanate unit as an organic diisocyanate unit, and 0.1 to 10% by mass of a hygroscopic polymer, and the molded product has a hardness of 75 to 90 when measured with a type-D durometer in accordance with JIS K 7215.

IPC Classes  ?

  • B24B 37/24 - Lapping pads for working plane surfaces characterised by the composition or properties of the pad materials
  • C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
  • C08J 5/14 - Manufacture of abrasive or friction articles or materials
  • C08L 75/04 - Polyurethanes
  • C08L 101/12 - Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
  • H01L 21/304 - Mechanical treatment, e.g. grinding, polishing, cutting

71.

POLISHING PAD

      
Application Number JP2022035519
Publication Number 2023/048266
Status In Force
Filing Date 2022-09-22
Publication Date 2023-03-30
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Goshi Yuko
  • Kato Mitsuru
  • Sugioka Takashi

Abstract

Provided is a polishing pad comprising a polishing layer that is a molded article of a polyurethane composition. The polyurethane composition contains 90-99.9 mass% of a thermoplastic polyurethane containing a non-alicyclic diisocyanate unit as an organic diisocyanate unit, and contains 0.1-10 mass% of a moisture-absorbing polymer. The molded article has a hardness, using a type D durometer conforming to JIS K 7215, of at least 60 but less than 75.

IPC Classes  ?

  • B24B 37/24 - Lapping pads for working plane surfaces characterised by the composition or properties of the pad materials
  • C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
  • C08J 5/14 - Manufacture of abrasive or friction articles or materials
  • C08L 75/04 - Polyurethanes
  • C08L 101/12 - Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
  • H01L 21/304 - Mechanical treatment, e.g. grinding, polishing, cutting

72.

CEMENT COMPOSITION, AGENT FOR PREVENTING DEHYDRATION, AND METHOD FOR PREVENTING CEMENT DEHYDRATION

      
Application Number JP2022033868
Publication Number 2023/038113
Status In Force
Filing Date 2022-09-09
Publication Date 2023-03-16
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kaneshima Takuma
  • Kim Jungyong
  • Ghebremeskel Ghebrehiwet
  • Morikawa Keisuke

Abstract

Provided is a cement composition containing cement and an agent for preventing dehydration, wherein the agent for preventing dehydration contains a vinyl alcohol polymer and a crosslinking agent and the expansion ratio of the agent for preventing dehydration is 200-3600%.

IPC Classes  ?

  • C09K 8/487 - Fluid loss control additives; Additives for reducing or preventing circulation loss
  • C09K 8/512 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
  • C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates

73.

IONOMER RESIN COMPOSITION, RESIN SHEET, AND LAMINATED GLASS

      
Application Number JP2022032387
Publication Number 2023/032909
Status In Force
Filing Date 2022-08-29
Publication Date 2023-03-09
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Niimura, Takuro
  • Takemoto, Kenta
  • Nakahara, Atsuhiro
  • Asanuma, Yoshiaki

Abstract

The present invention relates to an ionomer resin composition that includes an ionomer resin, including a (meth)acrylic acid unit (A), a (meth)acrylic acid neutralized product unit (B), and an ethylene unit (C), and a component Y selected from the group consisting of compounds having a hydroxy group and/or amide group, modified products thereof, and mixtures of these. The total content of the units (A) and the units (B) is 6-10 mol% in terms of the total monomer units constituting the ionomer resin and the content of the component Y is 0.01-2000 mass ppm (inclusive).

IPC Classes  ?

  • C08L 33/02 - Homopolymers or copolymers of acids; Metal or ammonium salts thereof
  • C03C 27/12 - Laminated glass
  • C08F 220/06 - Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
  • C08J 5/18 - Manufacture of films or sheets
  • C08K 5/05 - Alcohols; Metal alcoholates
  • C08K 5/20 - Carboxylic acid amides

74.

HYDROGEL AND STERILIZED DRY HYDROGEL-FORMING ARTICLE

      
Application Number JP2022031127
Publication Number 2023/022181
Status In Force
Filing Date 2022-08-17
Publication Date 2023-02-23
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Fujita, Akio
  • Ayano, Satoru
  • Kobayashi, Goro

Abstract

This sterilized dry hydrogel-forming article contains a cross-linked body of a vinyl alcohol-based polymer in which a bioactive substance is composited. This hydrogel contains a bioactive substance having an amino group and a cross-linked body of a vinyl alcohol-based polymer having an ethylenically unsaturated group and a carboxy group. The carboxy group of the cross-linked body and the amino group of the bioactive substance are covalently bound through an amide bond.

IPC Classes  ?

  • C08L 29/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
  • C08G 81/02 - Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • C08L 89/00 - Compositions of proteins; Compositions of derivatives thereof
  • C12N 11/084 - Polymers containing vinyl alcohol units

75.

POLISHING PAD

      
Application Number JP2022029479
Publication Number 2023/013576
Status In Force
Filing Date 2022-08-01
Publication Date 2023-02-09
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Sunayama Azusa
  • Kato Mitsuru
  • Takegoshi Minori

Abstract

This polishing pad has a polishing layer having a circular polishing surface, and is also provided with a spiral groove or concentric circular grooves consisting of a plurality of annular grooves arranged in concentric circles and formed spanning from a central region of the polishing surface to a circumferential edge region, and radiating grooves consisting of line segment grooves extending from the central region toward the circumferential edge region. The line segment grooves have first end sections in a region at a distance 5-10% of the radius of the polishing surface from the center of the radiating grooves and have second end sections in a region at a distance 35-70% of the radius of the polishing surface from the center of the radiating grooves. The line segment grooves have an average length that is a 30-65% proportion of the radius of the polishing surface. A cross-sectional area Sa (mm2) of the line segment grooves and a cross-sectional area Sb (mm2) of the spiral groove or concentric circular grooves satisfy the formula 0.1 ≤ Sb/Sa < 1.0.

IPC Classes  ?

  • B24B 37/26 - Lapping pads for working plane surfaces characterised by the shape of the lapping pad surface, e.g. grooved
  • B24B 37/24 - Lapping pads for working plane surfaces characterised by the composition or properties of the pad materials
  • H01L 21/304 - Mechanical treatment, e.g. grinding, polishing, cutting

76.

CARBONACEOUS MATERIAL, NEGATIVE ELECTRODE FOR POWER STORAGE DEVICES, POWER STORAGE DEVICE, AND METHOD FOR PRODUCING CARBONACEOUS MATERIAL

      
Application Number JP2022028462
Publication Number 2023/008328
Status In Force
Filing Date 2022-07-22
Publication Date 2023-02-02
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kanno, Momotaro
  • Nishiumi, Kosuke
  • Nishimura, Keiichi

Abstract

002002) of 3.65 Å or more as determined by X-ray diffractometry.

IPC Classes  ?

  • C01B 32/00 - Carbon; Compounds thereof
  • C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,
  • H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals

77.

WATER PURIFICATION FILTER AND WATER PURIFIER

      
Application Number JP2022028806
Publication Number 2023/008437
Status In Force
Filing Date 2022-07-26
Publication Date 2023-02-02
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Suzuki, Kengo
  • Kawasaki, Shuji
  • Arita, Satoru
  • Hanamoto, Tetsuya
  • Yoshinobu, Hiroe

Abstract

The water purification filter according to the present invention contains activated carbon and at least one fibrous binder. The fibrous binder has a maximum fiber length of 3.0 mm or greater and has at least one physical property from among (a)-(c): (a) an average shape of 80% or less; (b) an average fiber width of 20 μm or less; and (c) a fiber length distribution in which the frequency ratio of fibers having a length of 0.2 mm to 0.5 mm versus fibers having a length of 1.0 mm to 2.0 mm is 1.0 or greater.

IPC Classes  ?

  • C02F 1/28 - Treatment of water, waste water, or sewage by sorption
  • B01J 20/20 - Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
  • B01J 20/28 - Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties

78.

POLYVINYL ALCOHOL RESIN, DISPERSANT FOR SUSPENSION POLYMERIZATION, METHOD FOR PRODUCING VINYL POLYMER PARTICLES, AND METHOD FOR PRODUCING POLYVINYL ALCOHOL RESIN

      
Application Number JP2022028808
Publication Number 2023/008438
Status In Force
Filing Date 2022-07-26
Publication Date 2023-02-02
Owner KURARAY CO., LTD. (Japan)
Inventor Fujita Kazuma

Abstract

320320370320370370 of a 0.1 mass% aqueous solution of the polyvinyl alcohol resin when optical path length is 10 mm and wavelength is 370 nm is not greater than 4.9, and the combined content of bivalent metallic elements and trivalent metallic elements is less than 30 μmol/g.

IPC Classes  ?

  • C08F 8/12 - Hydrolysis
  • C08F 2/20 - Suspension polymerisation with the aid of macromolecular dispersing agents

79.

IONOMER RESIN PARTICULATE PRODUCTION METHOD

      
Application Number JP2022028951
Publication Number 2023/008485
Status In Force
Filing Date 2022-07-27
Publication Date 2023-02-02
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kudo, Yusuke
  • Takemoto, Kenta
  • Niimura, Takuro
  • Nakahara, Atsuhiro

Abstract

The present invention pertains to an ionomer resin particulate production method comprising a step for obtaining a porous particulate by extruding a mixture containing an ionomer resin and a solvent and cooling the extruded mixture to solidify a crude ionomer resin in the mixture. The crude ionomer resin includes a (meth)acrylic acid unit (A), a neutralized (meth)acrylic acid unit (B), and an ethylene unit (C). The total contained amount of said unit (A) and said unit (B) is 6-10 mol% with respect to all monomer units forming the crude ionomer resin. The porosity of said particulate is 60% or more.

IPC Classes  ?

  • C08J 3/14 - Powdering or granulating by precipitation from solutions
  • C03C 27/12 - Laminated glass
  • C08J 9/28 - Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum

80.

POLYAMIDE COMPOSITION

      
Application Number JP2022026067
Publication Number 2023/282154
Status In Force
Filing Date 2022-06-29
Publication Date 2023-01-12
Owner KURARAY CO., LTD. (Japan)
Inventor Sekiguchi, Kenji

Abstract

Provided is a polyamide composition which comprises a polyamide, a polyolefin, and a copper-based stabilizer, wherein: the polyolefin contains at least one kind of polyolefin (A) that contains a copolymer of ethylene, alkyl (meth)acrylate, and an unsaturated epoxide and at least one kind of polyolefin (B) that contains an unsaturated dicarboxylic anhydride; the mass ratio [B]/[A] of the content [B] of the polyolefin (B) to the content [A] of the polyolefin (A) is 0.1-2.9; and the value Z calculated by formula (1) is 33-200. Also provided are a production method therefor, use thereof, and a molded body obtained therefrom. Formula (1): Z=1000×(|[ANH]-[EPO]|+[EPO])/X2 [EPO] is the concentration (mmol/kg) of the unsaturated epoxide, which is derived from the polyolefin, per unit mass of the composition. [ANH] is the concentration (mmol/kg) of the unsaturated dicarboxylic anhydride, which is derived from the polyolefin, per unit mass of the composition. The X is the content (mass%) of the polyolefin in the composition.

IPC Classes  ?

  • C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
  • C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
  • C08K 3/16 - Halogen-containing compounds
  • C08L 23/08 - Copolymers of ethene
  • C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment

81.

STARCH COMPOSITION AND MOLDED BODY

      
Application Number JP2022016894
Publication Number 2023/276402
Status In Force
Filing Date 2022-03-31
Publication Date 2023-01-05
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kagawa, Genki
  • Shibata, Shohei
  • Washitake, Yosuke
  • Katsuya, Satoshi

Abstract

The present invention pertains to a starch composition comprising a starch and a vinyl alcohol-based polymer, wherein: the amylopectin proportion in the starch is at least 70%; the degree of saponification of the vinyl alcohol-based polymer is at most 96 mol%; and the proportion of the starch to the total mass of the starch and the vinyl alcohol-based polymer is 40-90 mass%, and the proportion of the vinyl alcohol-based polymer to the total mass of the starch and the vinyl alcohol-based polymer is 10-60 mass%.

IPC Classes  ?

  • C08L 3/02 - Starch; Degradation products thereof, e.g. dextrin
  • C08L 29/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
  • D01F 6/50 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyalcohols, polyacetals or polyketals
  • D01F 9/00 - Man-made filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments

82.

HYDROGENATED CONJUGATED DIENE GRAFT POLYMER, METHOD FOR PRODUCING SAME, POLYMER COMPOSITION, MOLDED ARTICLE, AND CROSSLINKED PRODUCT

      
Application Number JP2022024457
Publication Number 2023/276741
Status In Force
Filing Date 2022-06-20
Publication Date 2023-01-05
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Takai, Junya
  • Inatomi, Atsushi
  • Nakahara, Atsuhiro

Abstract

Provided are a hydrogenated conjugated diene graft polymer having exceptional affinity for polar materials as well as high thermal stability, and a method for producing the hydrogenated conjugated diene graft polymer. The hydrogenated conjugated diene graft polymer includes a main chain (a) composed of a polymer including a conjugated diene unit, and a side chain (b) composed of a polymer including at least one monomer unit selected from the group consisting of conjugated diene units and aromatic vinyl compound units, at least some of the carbon-carbon double bonds included in the conjugated diene units being hydrogenated, wherein the side chain (b) is bonded to an atom included in a monomer unit that forms a branched portion in the main chain (a), and a hydroxyl group is bonded to the main chain (a).

IPC Classes  ?

83.

HOT WATER-SOLUBLE MALE HOOK-AND-LOOP FASTENER AND METHOD FOR PRODUCING SAME

      
Application Number JP2022025031
Publication Number 2023/276844
Status In Force
Filing Date 2022-06-23
Publication Date 2023-01-05
Owner
  • KURARAY FASTENING CO., LTD. (Japan)
  • KURARAY CO., LTD. (Japan)
Inventor
  • Koga, Nobuhiro
  • Kamada, Hideki
  • Takakuwa, Kazunori
  • Fujisawa, Yoshikatsu

Abstract

A hot water-soluble male hook-and-loop fastener which comprises a base material and a plurality of male engagement elements that protrude from the surface of the base material, and which is characterized in that: both the base material and the male engagement elements contain a polyvinyl alcohol resin that has a polymerization degree within the range of 300 to 700 and a saponification degree within the range of 80 to 99% by mole; and the base material and the male engagement elements are both soluble in hot water at a temperature of 45 to 90°C, but are not soluble in water at a temperature less than 45°C.

IPC Classes  ?

  • A44B 18/00 - Fasteners of the touch-and-close type; Making such fasteners
  • C08K 5/053 - Polyhydroxylic alcohols
  • C08L 29/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
  • C08L 71/02 - Polyalkylene oxides
  • C08K 3/013 - Fillers, pigments or reinforcing additives
  • C08K 3/34 - Silicon-containing compounds

84.

CONJUGATED DIENE GRAFT POLYMER, METHOD FOR PRODUCING SAME, LUBRICATING OIL ADDITIVE, VISCOSITY INDEX IMPROVER, FRICTION-SUPPRESSING AGENT AND OIL COMPOSITION

      
Application Number JP2022024458
Publication Number 2023/276742
Status In Force
Filing Date 2022-06-20
Publication Date 2023-01-05
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Takai, Junya
  • Inatomi, Atsushi
  • Nakahara, Atsuhiro

Abstract

Provided are: a novel polymer which has a high viscosity index and a favorable friction-reducing effect; a lubricating oil additive comprising said polymer; a viscosity index improver comprising said polymer; a friction-suppressing agent comprising said polymer; an oil composition containing said lubricating oil additive; an oil composition containing said viscosity index improver; and an oil composition containing said friction-suppressing agent. A conjugated diene graft copolymer which includes a main chain (a) comprising a polymer containing a conjugated diene unit, and a side chain (b) comprising a polymer containing one or more monomer units selected from the group consisting of a conjugated diene unit and an aromatic vinyl compound unit, wherein the side chain (b) is bonded to an atom contained in the monomer unit forming the branched section belonging to the main chain (a), the number-average molecular weight of the main chain (a) is at least 5,000, and a hydroxyl group is bonded to the main chain (a).

IPC Classes  ?

  • C08C 19/02 - Hydrogenation
  • C08C 19/44 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
  • C08F 8/04 - Reduction, e.g. hydrogenation

85.

POLARIZING PLATE, HEAT FORMED BODY FORMED THEREOF, AND HEAT FORMED BODY MANUFACTURING METHOD

      
Application Number JP2022025801
Publication Number 2023/277025
Status In Force
Filing Date 2022-06-28
Publication Date 2023-01-05
Owner KURARAY CO., LTD. (Japan)
Inventor Yamaguchi, Mao

Abstract

This polarizing plate includes a polarizing film, wherein the thickness of the polarizing film is 20μm or less, and the amount of the polarizing film that is non-oriented and amorphous is 55-70%. At such time, it is preferrable for the amount of the polarizing film that is oriented and crystalline to be 10-15%. By thermoforming the polarizing plate, a heat formed body can be obtained. The heat formed body has sufficient polarizing properties and does not crack even if there is a large amount of deformation when thermoforming is performed.

IPC Classes  ?

  • G02B 5/30 - Polarising elements
  • B29C 51/00 - Shaping by thermoforming, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
  • G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors

86.

FIBER STRUCTURE, CROSSLINKED MOLDED BODY, AND METHOD FOR MANUFACTURING CROSSLINKED MOLDED BODY

      
Application Number JP2022024323
Publication Number 2022/270433
Status In Force
Filing Date 2022-06-17
Publication Date 2022-12-29
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Inoue, Yuki
  • Tsudaka, Takeshi
  • Katsuya, Satoshi
  • Tsunofuri, Shohei

Abstract

Provided are a fiber structure configured from two types of thermoplastic resins having thermal crosslinking reactivity, and a crosslinked molded body obtained by inducing a thermal crosslinking reaction between the thermoplastic resins. The fiber structure contains at least thermoplastic resins A and B that have thermal crosslinking reactivity with respect to each other, the thermoplastic resin A being an amorphous epoxy resin and at least one of the thermoplastic resins A and B having a fiber form.

IPC Classes  ?

  • C08J 5/04 - Reinforcing macromolecular compounds with loose or coherent fibrous material

87.

RESIN SHEET HAVING LAYER THAT CONTAINS IONOMER RESIN COMPOSITION, AND LAMINATED GLASS

      
Application Number JP2022024892
Publication Number 2022/270540
Status In Force
Filing Date 2022-06-22
Publication Date 2022-12-29
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Niimura, Takuro
  • Nakahara, Atsuhiro
  • Asanuma, Yoshiaki

Abstract

The present invention relates to a resin sheet which has one or more layers that contain an ionomer resin composition, wherein: one of the layers that contain an ionomer resin composition forms at least one surface of the resin sheet; the surface has a contact angle of 60 to 75 degrees as determined in accordance with JIS K6768; the ionomer resin composition contains an ionomer resin that has a (meth)acrylic acid unit (A), a neutralized (meth)acrylic acid unit (B) and an ethylene unit (C), and a salt that is formed of a strong acid and a strong base; the total content of the unit (A) and the unit (B) is 6 to 10% by mole based on all monomer units of the ionomer resin; and the content of the salt is 1 to 400 mg/kg based on the total mass of the ionomer resin composition.

IPC Classes  ?

  • C08J 5/18 - Manufacture of films or sheets
  • B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
  • C03C 27/12 - Laminated glass
  • C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment

88.

RESIN COMPOSITION FORMED BY CONTAINING IONOMER RESIN, RESIN SHEET, AND LAMINATED GLASS

      
Application Number JP2022024898
Publication Number 2022/270542
Status In Force
Filing Date 2022-06-22
Publication Date 2022-12-29
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Niimura, Takuro
  • Nakahara, Atsuhiro
  • Takemoto, Kenta

Abstract

The present invention relates to a resin composition that is formed by containing: an organic compound; and an ionomer resin that contains a (meth)acrylic acid unit (A), a neutralized (meth)acrylic acid unit (B) and an ethylene unit (C). The total content of the unit (A) and the unit (B) is 6-10 mol% relative to the total amount of monomer units that constitute the ionomer resin. The organic compound is a liquid at 23ºC and is at least one organic compound selected from the group consisting of aromatic compounds, alcohols, organic carboxylic acids and organic carboxylic acid esters. The content of the organic compound is 1-300 ppm by mass.

IPC Classes  ?

  • C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
  • C03C 27/12 - Laminated glass
  • C08J 5/18 - Manufacture of films or sheets

89.

IONOMER RESIN COMPOSITION, RESIN SHEET, AND LAMINATED GLASS

      
Application Number JP2022024906
Publication Number 2022/270545
Status In Force
Filing Date 2022-06-22
Publication Date 2022-12-29
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Niimura, Takuro
  • Takemoto, Kenta
  • Asanuma, Yoshiaki
  • Nakahara, Atsuhiro

Abstract

The present invention relates to an ionomer resin composition comprising an ionomer resin and a silane coupling agent, wherein: the ionomer resin includes a (meth)acrylic acid unit (A), a (meth)acrylic acid neutralized unit (B), and an ethylene unit (C); the total content of the unit (A) and the unit (B) is 6-10 mol% with respect to the total monomer units constituting the ionomer resin; the content of a salt formed by a strong acid and a strong base in the ionomer resin composition is 1-400 mg/kg; and the content of the silane coupling agent is 0.005-0.5 parts by mass with respect to 100 parts by mass of the ionomer resin.

IPC Classes  ?

  • C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
  • C03C 27/12 - Laminated glass
  • C08J 5/18 - Manufacture of films or sheets
  • C08K 5/5415 - Silicon-containing compounds containing oxygen containing at least one Si—O bond
  • C08K 5/544 - Silicon-containing compounds containing nitrogen

90.

RESIN COMPOSITION AND MOLDED BODY

      
Application Number JP2022025306
Publication Number 2022/270620
Status In Force
Filing Date 2022-06-24
Publication Date 2022-12-29
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Amano, Yusuke
  • Tachibana, Yuki
  • Sawatani, Hirotaka
  • Sato, Tomohiko

Abstract

The present invention relates to a resin composition comprising: a modified vinyl-alcohol-based polymer (A) that has an anionic group; and a starch (B), wherein the starch (B) contains 50-100 mass% of amylopectin.

IPC Classes  ?

  • C08L 3/02 - Starch; Degradation products thereof, e.g. dextrin
  • C08L 29/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids

91.

ADHESIVE COMPOSITION

      
Application Number JP2022023047
Publication Number 2022/260058
Status In Force
Filing Date 2022-06-08
Publication Date 2022-12-15
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Ueno, Yoshikazu
  • Uehara, Yosuke
  • Koda, Daisuke

Abstract

Provided is an adhesive composition containing 5-250 parts by mass of liquid farnesene rubber (B) and 10-500 parts by mass of a tackifying resin (C) per 100 parts by mass of at least one solid rubber (A) selected from the group consisting of natural rubber, polyisoprene rubber, polybutadiene rubber, styrene-butadiene copolymer rubber, styrene-isoprene copolymer rubber, acrylonitrile-butadiene copolymer rubber, chloroprene rubber, ethylene-propylene rubber, and butyl rubber, the liquid farnesene rubber (B) satisfying requirements (I) and (II). (I) The melt viscosity measured at 38°C is within the range of 0.1-3,000 Pa∙s. (II) When measured using gel permeation chromatography (GPC), the maximum peak molecular weight (Mt) is 3,000-200,000, and the molecular weight distribution (Mw/Mn) is 1.0-1.4.

IPC Classes  ?

  • C09J 11/08 - Macromolecular additives
  • C09J 107/00 - Adhesives based on natural rubber
  • C09J 109/00 - Adhesives based on homopolymers or copolymers of conjugated diene hydrocarbons
  • C09J 109/02 - Copolymers with acrylonitrile
  • C09J 109/06 - Copolymers with styrene
  • C09J 111/00 - Adhesives based on homopolymers or copolymers of chloroprene
  • C09J 123/16 - Ethene-propene or ethene-propene-diene copolymers
  • C09J 123/22 - Copolymers of isobutene; Butyl rubber
  • C09J 153/02 - Vinyl aromatic monomers and conjugated dienes

92.

VINYLIDENE FLUORIDE-BASED RESIN COMPOSITION, MOLDED ARTICLE, AND MULTILAYER BODY

      
Application Number JP2022021760
Publication Number 2022/255253
Status In Force
Filing Date 2022-05-27
Publication Date 2022-12-08
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Nomoto, Yusaku
  • Asami, Rina
  • Nagasaki, Tatsuya

Abstract

The present invention addresses the problem of providing: a vinylidene fluoride-based resin composition having excellent heat resistance, wear resistance and solvent resistance; a molded article; and a multilayer body. The present invention provides a vinylidene fluoride-based resin composition comprising 60 to 95% by mass of a vinylidene fluoride-based resin (A) and 5 to 40% by mass of a methacrylic copolymer (B), in which the methacrylic copolymer (B) comprises 50 to 93% by mass of a methyl methacrylate unit, 7 to 30% by mass of an α-methylstyrene unit, and 0 to 20% by mass of another monomer unit that is copolymerizable with the methyl methacrylate unit and the α-methylstyrene unit.

IPC Classes  ?

93.

POROUS CARBON FOR POSITIVE ELECTRODE ADDITIVE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, POSITIVE ELECTRODE ADDITIVE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND PRODUCTION METHOD FOR POROUS CARBON

      
Application Number JP2022022127
Publication Number 2022/255359
Status In Force
Filing Date 2022-05-31
Publication Date 2022-12-08
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kobayashi, Shohei
  • Kawakami, Tomohiro
  • Saito, Tsutomu
  • Takai, Jun

Abstract

The purpose of the present invention is to provide a porous carbon that is suitable for a positive electrode additive and can improve the input/output characteristics of a non-aqueous electrolyte secondary battery at room temperature and ensure the peel strength of an electrode. The present invention relates to a porous carbon that has a 2–200 nm pore volume of at least 0.8 cm3/g as measured by BJH analysis, a bulk density of no more than 0.10 g/cm3, a mode pore size of no more than 150 nm as measured by BJH analysis, and an average primary particle size of 1–100 μm.

IPC Classes  ?

  • H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
  • C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,
  • H01G 11/42 - Powders or particles, e.g. composition thereof
  • H01G 11/44 - Raw materials therefor, e.g. resins or coal
  • H01G 11/86 - Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
  • H01M 4/13 - Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof

94.

RESIN COMPOSITION, MOLDED BODY USING SAME AND METHOD FOR PRODUCING RESIN COMPOSITION

      
Application Number JP2022019618
Publication Number 2022/239716
Status In Force
Filing Date 2022-05-09
Publication Date 2022-11-17
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Sunaga, Shuichi
  • Matsushita, Yuta
  • Lu, Wenjie

Abstract

A resin composition which contains a resin (A) containing 30% by mole or more of a structural unit that is represented by formula (1), and a boron compound (B), wherein the elemental boron contained in the boron compound (B) is 0.01 to 2,000 micromoles relative to 1 g of the resin (A).

IPC Classes  ?

  • C08L 29/02 - Homopolymers or copolymers of unsaturated alcohols
  • B32B 27/30 - Layered products essentially comprising synthetic resin comprising acrylic resin
  • B65D 65/40 - Applications of laminates for particular packaging purposes
  • C08F 8/04 - Reduction, e.g. hydrogenation
  • C08K 3/38 - Boron-containing compounds

95.

THERMOPLASTIC ELASTOMER COMPOSITION, MOLDED ARTICLE, LAYERED STRUCTURE, AND METHOD FOR PRODUCING SAID LAYERED STRUCTURE

      
Application Number JP2022014113
Publication Number 2022/230482
Status In Force
Filing Date 2022-03-24
Publication Date 2022-11-03
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kawahara, Moe
  • Hirakata, Shutaro
  • Okumura, Nao

Abstract

The present invention provides: a thermoplastic elastomer composition that exhibits excellent transparency, excellent flexibility which is represented by high tensile strain at break, and high hardness, and can have excellent adhesive strength even with respect to a highly polar material; a molded article; a layered structure; and a method for producing the layered structure. The thermoplastic elastomer composition contains, with respect to 100 parts by mass of a hydrogenated block copolymer (A), 185-1,500 parts by mass of an acrylic polymer (B), 5-150 parts by mass of an aromatic polymer (C) (excluding the hydrogenated block copolymer (A) and the acrylic polymer (B)), and 70-300 parts by mass of a softening agent (D), wherein: the hydrogenated block copolymer (A) is a hydrogenation product of a block copolymer (P) which has two or more polymer blocks (a1) each containing an aromatic vinyl compound-derived structural unit and one or more polymer blocks (a2) each containing a conjugated diene-derived structural unit and in which the contained amount of the polymer blocks (a1) is within the range of 3-45 mass%; and the mass ratio [(C)/(B)] of the aromatic polymer (C) to the acrylic polymer (B) is 0.01-0.19.

IPC Classes  ?

  • B32B 25/04 - Layered products essentially comprising natural or synthetic rubber comprising rubber as the main or only constituent of a layer, next to another layer of a specific substance
  • B32B 27/30 - Layered products essentially comprising synthetic resin comprising acrylic resin
  • C08L 25/02 - Homopolymers or copolymers of hydrocarbons
  • C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
  • C08L 53/02 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
  • C08L 91/02 - Vulcanised oils, e.g. factice

96.

RESIN COMPOSITION, FOAMABLE COMPOSITION, AND CROSSLINKED FOAM BODY

      
Application Number JP2022018634
Publication Number 2022/230785
Status In Force
Filing Date 2022-04-22
Publication Date 2022-11-03
Owner KURARAY CO., LTD. (Japan)
Inventor Senda, Yasushi

Abstract

This resin composition contains, as component (x), a hydrogenated product (X) of a block copolymer having a polymeric block (A-1) derived from an aromatic vinyl compound and having a polymeric block (B-1) derived from a conjugated diene compound, and, as component (y), a block copolymer (Y0) having a polymeric block (A-2) derived from an aromatic vinyl compound and having a polymeric block (B-2) derived from a conjugated diene compound, or a hydrogenated product (Y) of the block copolymer (Y0), and satisfies conditions [1]-[4]. [1] The glass transition temperature of component (x) is at least -40°C. [2] The glass transition temperature of component (y) is at most -50°C. [3] A ratio Mx/My of the mass Mx of component (x) with respect to the mass My of component (y) in the resin composition is 1/99 to 99/1. [4] The polymeric block (B-2) includes a structural unit derived from β-farnesene.

IPC Classes  ?

  • C08F 297/04 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising vinyl aromatic monomers and conjugated dienes
  • C08L 53/02 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
  • C09K 3/00 - Materials not provided for elsewhere
  • F16F 15/02 - Suppression of vibrations of non-rotating, e.g. reciprocating, systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating system

97.

VINYL ALCOHOL-BASED POLYMER, POWDER CONTAINING SAME, METHOD FOR PRODUCING POWDER, COATING AGENT, COATED PRODUCT, METHOD FOR PRODUCING COATED PRODUCT, STABILIZER FOR EMULSION POLYMERIZATION, AQUEOUS EMULSION, AND ADHESIVE AGENT

      
Application Number JP2022018771
Publication Number 2022/230825
Status In Force
Filing Date 2022-04-25
Publication Date 2022-11-03
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Fujimori Misuzu
  • Taoka Yuta
  • Jikihara Atsushi

Abstract

Provided is a vinyl alcohol-based polymer (PVA) that contains structural units derived from at least one type selected from the group consisting of carboxyl group-containing monomers and derivatives thereof. The minimum degree of branching is 0.93 or less within an absolute molecular weight range of 200,000-800,000. When 4 parts by mass of the PVA is added to 96 parts by mass of water and stirred for 1 hour at 60ºC, the amount of insoluble components is not less than 0.1 ppm and less than 2000 ppm.

IPC Classes  ?

98.

VINYL ALCOHOL POLYMER, POWDER INCLUDING SAME, METHODS FOR PRODUCING SAME, PAPER PROCESSING AGENT, AND DISPERSANT FOR EMULSION POLYMERIZATION

      
Application Number JP2022018783
Publication Number 2022/230828
Status In Force
Filing Date 2022-04-25
Publication Date 2022-11-03
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Fujimori Misuzu
  • Taoka Yuta

Abstract

This vinyl alcohol polymer contains a structural unit derived from at least one selected from the group consisting of a carboxy group-containing monomer and a derivative thereof, wherein the vinyl alcohol polymer has: a minimum degree of branching of at most 0.93 in the absolute molecular weight range of 200,000 to 800,000; a viscosity average degree of polymerization of at most 750; and a degree of saponification of at least 65 mol%.

IPC Classes  ?

99.

LAMINATE, AND METHOD FOR PRODUCING SAME

      
Application Number JP2022015281
Publication Number 2022/230547
Status In Force
Filing Date 2022-03-29
Publication Date 2022-11-03
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Ozawa, Yushi
  • Yamano, Masaharu

Abstract

ABB represent the melt viscosity of the resin composition (A) and the resin composition (B), respectively, as measured at a temperature of 220°C and a shear rate of 50 s-1BAA≤2.00

IPC Classes  ?

  • B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
  • B32B 27/30 - Layered products essentially comprising synthetic resin comprising acrylic resin

100.

ADHESIVE COMPOSITION, LAMINATE, AND SURFACE PROTECTIVE FILM

      
Application Number JP2022013779
Publication Number 2022/224688
Status In Force
Filing Date 2022-03-24
Publication Date 2022-10-27
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Akai, Makoto
  • Ono, Tomohiro

Abstract

The present invention provides: an adhesive composition that has excellent moldability in various types of molding such as extrusion molding, excellent film forming properties, and excellent adhesiveness even to highly polar materials, and that moreover can be easily produced and stably exhibits the aforementioned characteristics; a laminate that includes a substrate and an adhesive layer composed of the adhesive composition; and a surface protective film that has excellent unwinding properties and is composed of the laminate. The adhesive composition contains a styrenic block copolymer (A1) and an acrylic block copolymer (B), (1) the melt viscosity of the styrenic block copolymer (A1) and the melt viscosity of the acrylic block copolymer (B) satisfy a specific relationship, (2) the mass ratio of the amount of the styrenic block copolymer (A1) included in the adhesive composition and the amount of the acrylic block copolymer (B) included in the adhesive composition is a specific relationship, (3) the styrenic block copolymer (A1) is a hydrogenation product of a block copolymer (P1) containing specific polymer blocks, and (4) the acrylic block copolymer (B) contains specific polymer blocks and has a number average molecular weight within a specific range.

IPC Classes  ?

  • B32B 27/00 - Layered products essentially comprising synthetic resin
  • B32B 27/30 - Layered products essentially comprising synthetic resin comprising acrylic resin
  • C09J 11/08 - Macromolecular additives
  • C09J 125/10 - Copolymers of styrene with conjugated dienes
  • C09J 133/08 - Homopolymers or copolymers of acrylic acid esters
  • C09J 133/10 - Homopolymers or copolymers of methacrylic acid esters
  • C09J 153/00 - Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
  • C09J 7/24 - Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • C09J 7/38 - Pressure-sensitive adhesives [PSA]
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