Kuraray Co., Ltd.

Japan

Back to Profile

1-100 of 2,062 for Kuraray Co., Ltd. and 2 subsidiaries Sort by
Query
Patent
World - WIPO
Excluding Subsidiaries
Aggregations Reset Report
Owner / Subsidiary
[Owner] Kuraray Co., Ltd. 2,062
Kuraray Europe GmbH 11
Kuraray Fastening Co., Ltd. 6
Date
New (last 4 weeks) 12
2024 April (MTD) 10
2024 March 2
2024 February 4
2024 January 9
See more
IPC Class
C08J 5/18 - Manufacture of films or sheets 216
C08L 29/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids 196
B32B 27/30 - Layered products essentially comprising synthetic resin comprising acrylic resin 167
G02B 5/30 - Polarising elements 128
C03C 27/12 - Laminated glass 85
See more
Found results for  patents
  1     2     3     ...     21        Next Page

1.

COPOLYMER AND RESIN COMPOSITION CONTAINING COPOLYMER

      
Application Number JP2023036816
Publication Number 2024/080287
Status In Force
Filing Date 2023-10-11
Publication Date 2024-04-18
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Inatomi Atsushi
  • Iishiba Kazuki
  • Nakahara Atsuhiro

Abstract

22=CR1R2, and is characterized by including the following four kinds of triads (U-1) to (U-4) each composed of the constituent unit (A) and the constituent unit (B): (U-1), (A)-(A)-(A); (U-2), (A)-(A)-(B); (U-3), (B)-(A)-(A); and (U-4), (B)-(A)-(B), the total content of (U-2) and (U-3) in all the four kinds of triads being 9.0 mol% or less.

IPC Classes  ?

  • C08F 222/34 - Vinylidene cyanide
  • H01B 5/14 - Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
  • H01G 4/32 - Wound capacitors
  • H01G 7/02 - Electrets, i.e. having a permanently-polarised dielectric

2.

COMPOSITION

      
Application Number JP2023037277
Publication Number 2024/080374
Status In Force
Filing Date 2023-10-13
Publication Date 2024-04-18
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Sakano Takeshi
  • Okamoto Makoto

Abstract

Provided is a composition that contains a compound having polymerizability, that has high storage stability, and that can suppress corrosion of metal during storage. This composition contains an unsaturated compound represented by formula (1) and an organic halide. The contained amount of the organic halide expressed as halogen elements is 1-10,000 mass ppm with respect to the contained amount of the unsaturated compound. In formula (1), R1, R2, R3, R4, R5, and R6 each independently represent a hydrogen atom or an alkyl group having 1-10 carbon atoms.

IPC Classes  ?

  • C08F 2/40 - Polymerisation using regulators, e.g. chain terminating agents using retarding agents
  • C08F 18/02 - Esters of monocarboxylic acids

3.

3-METHYL-1-BUTENE, AND PRODUCTION METHOD OF 3-METHYL-1-BUTENE POLYMER

      
Application Number JP2023036951
Publication Number 2024/080319
Status In Force
Filing Date 2023-10-12
Publication Date 2024-04-18
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Murata Yusuke
  • Katayama Naoyuki
  • Inada Tsubasa
  • Matsubara Yuki
  • Sato Yu

Abstract

3-Methyl-1-butene that has a purity determined by gas chromatography of 99.5000-99.9940% and contains 0.0070-0.1700% of 2-methyl-1-butene as an impurity.

IPC Classes  ?

  • C07C 11/10 - Alkenes with five carbon atoms
  • C08F 10/14 - Monomers containing five or more carbon atoms
  • C08L 23/20 - Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms

4.

COPOLYMER, METHOD FOR PRODUCING COPOLYMER, AND RESIN COMPOSITION CONTAINING COPOLYMER

      
Application Number JP2023036832
Publication Number 2024/080292
Status In Force
Filing Date 2023-10-11
Publication Date 2024-04-18
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Inatomi Atsushi
  • Iishiba Kazuki
  • Nakahara Atsuhiro

Abstract

22=CR1R2 (I), wherein the copolymer is characterized by containing the following four triplet structures (U-1) to (U-4) composed of the structural unit (A) and the structural unit (B), (A)-(A)-(A)…(U-1), (A)-(A)-(B)…(U-2), (B)-(A)-(A)…(U-3), (B)-(A)-(B)…(U-4), and by the total content of (U-2) and (U-3) in the total amount of the four triplet structures being 5.5 mol% or less.

IPC Classes  ?

  • C08F 220/42 - Nitriles
  • H01B 5/14 - Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
  • H01G 4/32 - Wound capacitors

5.

DEVICE FOR PRODUCING INFLATION FILM

      
Application Number JP2023035424
Publication Number 2024/075632
Status In Force
Filing Date 2023-09-28
Publication Date 2024-04-11
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Arimoto, Kikuo
  • Takasaki, Shinichi
  • Togo, Keito
  • Kitajima, Kiyotaka

Abstract

A device (10) for producing an inflation film comprises: an extrusion means (1) which melts a thermoplastic resin and extrudes the melt through an annular die (2); a blowing means (2b) which supplies a gas to the inside of the extruded tubular melt to form a bubble; an air ring (7) which blows air against the bubble from outside; a take-off device (12) which takes off the bubble while folding the bubble into a sheet form; and a winding device (6) which winds up the folded film. The device (10) for producing an inflation film is equipped with a heating means (8) disposed on the peripheral side of a bubble formation region and extending from a position above the air ring to a position having a given height, and temperature control is conducted for at least two separate zones arranged in the height direction.

IPC Classes  ?

  • B29L 7/00 - Flat articles, e.g. films or sheets
  • B29C 48/10 - Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
  • B29C 48/32 - Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
  • B29C 48/885 - External treatment, e.g. by using air rings for cooling tubular films
  • B29C 48/89 - Internal treatment, e.g. by applying an internal cooling fluid stream
  • B29C 48/92 - Measuring, controlling or regulating

6.

METHOD FOR PRODUCING THERMOPLASTIC LIQUID CRYSTAL POLYMER FILM

      
Application Number JP2023035441
Publication Number 2024/075636
Status In Force
Filing Date 2023-09-28
Publication Date 2024-04-11
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Arimoto, Kikuo
  • Takasaki, Shinichi
  • Togo, Keito

Abstract

A method for producing a thermoplastic liquid crystal polymer film by an inflation filmmaking method that melt extrudes a liquid crystal polymer that exhibits optical anisotropy when molten from an annular die into a tube shape, forms a bubble by supplying a gas and expanding the interior space thereof while cooling this tube-shaped molten material, and takes off this bubble while folding into a sheet shape, wherein the bubble is taken off while heating in a state such that the ratio hf/ht of the height hf from the exit of the die to the frost line of the bubble and the height ht from the exit of the die to the upper end of the heating means is from 50% to 100% by heating the bubble by a heating means provided on the outer periphery of the bubble formation zone, and a thermoplastic liquid crystal polymer film having a molecular orientation SOR of 0.8 to 1.5 is produced.

IPC Classes  ?

  • B29K 67/00 - Use of polyesters as moulding material
  • B29K 77/00 - Use of polyamides, e.g. polyesteramides, as moulding material
  • B29L 9/00 - Layered products
  • B29C 48/08 - Flat, e.g. panels flexible, e.g. films
  • 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 48/32 - Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
  • B29C 48/885 - External treatment, e.g. by using air rings for cooling tubular films
  • B29C 48/89 - Internal treatment, e.g. by applying an internal cooling fluid stream
  • B29C 48/92 - Measuring, controlling or regulating

7.

COMPOSITION, DISPERSING AGENT FOR SUSPENSION POLYMERIZATION, AND METHOD FOR PRODUCING VINYL-BASED POLYMER

      
Application Number JP2023036477
Publication Number 2024/075829
Status In Force
Filing Date 2023-10-06
Publication Date 2024-04-11
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Okamoto Yuji
  • Seki Michinari

Abstract

Provided are: a composition which contains a vinyl alcohol-based polymer and an amphipathic substance and which can yield polymer particles having a small average particle diameter, few coarse particles and good plasticizer-absorbing properties even if suspension polymerization is carried out at a high temperature; a dispersing agent for suspension polymerization, which contains this composition; and a method for producing a vinyl-based polymer. The present invention is a composition which contains a vinyl alcohol-based polymer (A) and an amphipathic substance (B). The vinyl alcohol-based polymer (A) is a carbonyl group-containing vinyl alcohol-based polymer having a degree of saponification of 60 mol% or more. The amphipathic substance (B) includes at least one type selected from the group consisting of a surfactant and a vinyl alcohol-based polymer having a degree of saponification of less than 60 mol%.

IPC Classes  ?

  • C08L 29/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
  • C08F 8/12 - Hydrolysis
  • C08F 16/34 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical by an aldehydo radical
  • C08F 18/08 - Vinyl acetate

8.

ADHESIVE COMPOSITION AND PRODUCTION METHOD FOR ADHESIVE COMPOSITION

      
Application Number JP2022041794
Publication Number 2024/069992
Status In Force
Filing Date 2022-11-09
Publication Date 2024-04-04
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kaneko, Shuhei
  • Konishi, Daisuke
  • Sasaki, Hiromitsu

Abstract

Provided are: an adhesive composition that is highly bio-based and has suitable adhesion and high thermal resistance; and a production method for the same. This adhesive 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 tackifier (Y). The block copolymer (X) includes, as the polymer block (B), at least one polymer block (B-1) containing a structural unit derived from β-farnesene, and the block copolymer (X) includes at least one block copolymer selected from the group consisting of a non-hydrogenated block copolymer (X0), which is a block copolymer that has not been hydrogenated, and a hydrogenated block copolymer (X1), which is a block copolymer that has been hydrogenated and which has a degree of hydrogenation of less than 50 mol%.

IPC Classes  ?

  • C09J 11/06 - Non-macromolecular additives organic
  • C09J 121/00 - Adhesives based on unspecified rubbers
  • C09J 153/02 - Vinyl aromatic monomers and conjugated dienes

9.

RESIN COMPOSITION AND MOLDED ARTICLE

      
Application Number JP2023027887
Publication Number 2024/070188
Status In Force
Filing Date 2023-07-31
Publication Date 2024-04-04
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Konishi Daisuke
  • Sasaki Hiromitsu
  • Kaneko Shuhei
  • Tomishima Yuta
  • Sekiguchi Takahiro

Abstract

Provided are: a resin composition that exhibits an excellent moldability and contains material that can lessen the environmental impact; and a molded article that uses this resin composition. This resin composition comprises: (I) a block copolymer that contains a polymer block (a1) containing an aromatic vinyl compound-derived structural unit and a polymer block (a2) containing a conjugated diene compound-derived structural unit; and (II) a biomass-derived plasticizer that does not have the carboxy group. The biobased content of the plasticizer (II) is at least 70 mass%.

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
  • C08K 5/01 - Hydrocarbons
  • 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 23/06 - Polyethene
  • C08L 23/12 - Polypropene
  • C08L 101/12 - Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity

10.

ACRYLIC RESIN COMPOSITION FOR SENSOR PROTECTION COVERS

      
Application Number JP2023034773
Publication Number 2024/071052
Status In Force
Filing Date 2023-09-25
Publication Date 2024-04-04
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Idei, Hiroaki
  • Nomoto, Yusaku
  • Nakamura, Kimitoshi
  • Tamura, Hidetaka
  • Takahashi, Tomohiro

Abstract

An acrylic resin composition for sensor protection covers, which comprises an acrylic resin (A) and a light absorber (B), the acrylic resin composition having a deflection temperature under load of 110°C or higher. A 1-mm-thick molded object of the acrylic resin composition has optical properties satisfying all of the requirements (i) to (v). (i) When light having a wavelength of 380-700 nm is caused to enter the molded object at an incidence angle of 0°, the maximum transmittance is 10% or less. (ii) When light having a wavelength of 850-950 nm is caused to enter the molded object at an incidence angle of 0°, the minimum transmittance is 85% or greater. (iii) When light having a wavelength of 1,500-1,600 nm is caused to enter the molded object at an incidence angle of 0°, the average transmittance is 85% or greater. (iv) 0.9≤(transmittance of light having a wavelength of 900 nm when the light is caused to enter the molded object at an incidence angle of 60°)/(transmittance of light having a wavelength of 900 nm when the light is caused to enter the molded object at an incidence angle of 0°)≤1.1 (v) 0.9≤(transmittance of light having a wavelength of 1,550 nm when the light is caused to enter the molded object at an incidence angle of 60°)/(transmittance of light having a wavelength of 1,550 nm when the light is caused to enter the molded object at an incidence angle of 0°)≤1.1

IPC Classes  ?

  • C08L 33/06 - Homopolymers or copolymers of esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
  • C08K 5/00 - Use of organic ingredients
  • G01S 7/03 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group - Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver

11.

ADHESIVE AGENT, CURED PRODUCT, AND MEMBER

      
Application Number JP2023032628
Publication Number 2024/062930
Status In Force
Filing Date 2023-09-07
Publication Date 2024-03-28
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Terunuma Ryota
  • Kato Naoya
  • Fukumoto Takashi

Abstract

Provided are: an adhesive agent having excellent adhesiveness and heat resistance; a cured product of the adhesive agent; and a member including the cured product. Specifically, the adhesive agent comprises: 0.05-9.5 mass% of a polyfunctional, polymerizable compound (A) represented by general formula (a1); and 90.5-99.95 mass% of a polymerizable monomer (B). [In general formula (a1), R1-R3each independently represent a hydrogen atom, an alkyl group having 1-6 carbon atoms, an alkenyl group having 2-6 carbon atoms, an aryl group having 6-12 carbon atoms, or an aralkyl group having 7-13 carbon atoms, and R4 represents a (meth)acryloyl group, a vinyl phenyl group, or an alkenyl group having 2-6 carbon atoms. n represents an integer of 1-6.]

IPC Classes  ?

12.

COMPOSITION FOR VIBRATION-DAMPING MATERIAL, VIBRATION-DAMPING MATERIAL AND MEMBER

      
Application Number JP2023032630
Publication Number 2024/062932
Status In Force
Filing Date 2023-09-07
Publication Date 2024-03-28
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Terunuma Ryota
  • Kato Naoya
  • Fukumoto Takashi

Abstract

Provided is a composition for a vibration-damping material capable of yielding a vibration-damping material having a wide temperature range in which the tanδ value is 0.5 or more. Provided is a vibration-damping material obtained by curing this composition for a vibration-damping material, and provided is a member containing this vibration-damping material. This composition for a vibration-damping material specifically contains 0.05-9.5 mass% of a polyfunctional polymerizable compound (A) represented by general formula (a1) and 90.5-99.95 mass% of a polymerizable monomer (B). [In general formula (a1), R1to R3each independently represent a hydrogen atom, a C1-6 alkyl group, a C2-6 alkenyl group, a C6-12 aryl group, or a C7-13 aralkyl group, and R4 represents a (meth)acryloyl group, a vinyl phenyl group, or a C2-6 alkenyl group. n represents an integer of 1 to 6.]

IPC Classes  ?

13.

POLYAMIDE RESIN COMPOSITION, EXTRUSION-MOLDED BODY, AND PRODUCTION METHOD FOR EXTRUSION-MOLDED BODY

      
Application Number JP2023027822
Publication Number 2024/029470
Status In Force
Filing Date 2023-07-28
Publication Date 2024-02-08
Owner KURARAY CO., LTD. (Japan)
Inventor Watanabe Risa

Abstract

2222]/[COOH]<5. [4] The content ratio of a functional group composed of unsaturated epoxide in the component (B)≤200 mol/g. [5] The ratio of copper atoms derived from a copper-based stabilizer in the composition≤200 ppm by mass.

IPC Classes  ?

  • C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
  • C08K 5/09 - Carboxylic acids; Metal salts thereof; Anhydrides thereof
  • 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

14.

EMULSION

      
Application Number JP2023028328
Publication Number 2024/029578
Status In Force
Filing Date 2023-08-02
Publication Date 2024-02-08
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Fukuhara Tadahito
  • Sakon Kazuki
  • Konishi Hiroyuki
  • Toshinari Kenta

Abstract

Provided is an emulsion containing a block copolymer (I) and a dispersant (II), wherein the block copolymer (I) contains block structural units (A) containing polylactic acid units (a) as a main component and block structural units (B) containing polyester units (b) as a main component.

IPC Classes  ?

  • C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones
  • C08G 63/06 - Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxy carboxylic acids

15.

POROUS CARBON AND PRODUCTION METHOD THEREOF

      
Application Number JP2023026518
Publication Number 2024/024610
Status In Force
Filing Date 2023-07-20
Publication Date 2024-02-01
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kobayashi, Shohei
  • Kamae, Yoshiki
  • Takai, Jun

Abstract

The present invention relates to a porous carbon which has the inclination of an approximate straight line of 4 or greater, said approximate straight line being obtained by, in the measurement of a nitrogen adsorption isotherm, converting the pressure change of nitrogen until adsorption equilibrium is reached at each preset relative pressure into a mass transfer coefficient using the LDF approximation and linearly approximating the relationship between the relative pressure and the mass transfer coefficient at the relative pressure of 1.0×10-4to 1.0×10-3inclusive, and which has a pore volume of 0.8 cm3/g or greater at the pore diameter of 2 to 200 nm inclusive that is calculated from the nitrogen adsorption isotherm by the BJH method.

IPC Classes  ?

  • C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,
  • 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
  • B01J 20/30 - Processes for preparing, regenerating or reactivating

16.

RESIN COMPOSITION, MOLDED BODY, MULTILAYER STRUCTURE, AND METHOD FOR PRODUCING MULTILAYER STRUCTURE

      
Application Number JP2023027084
Publication Number 2024/024756
Status In Force
Filing Date 2023-07-25
Publication Date 2024-02-01
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kato Masahiro
  • Konishi Daisuke
  • Kaneko Shuhei

Abstract

The present invention provides a resin composition which contains: a modified hydrogenated product (A) of a block copolymer that comprises a polymer block (A-1) having a structural unit that is derived from an aromatic vinyl compound and a polymer block (A-2) having a structural unit that is derived from a conjugated diene compound; and a resin (B). With respect to this resin composition, the modified hydrogenated product (A) has at least one functional group that is selected from the group consisting of a carboxy group, an amino group, a hydroxy group and a group derived from an acid anhydride, while having a vinyl bond content in the polymer block (A-2) of 50% by mole to 99% by mole; the resin (B) is composed of at least one substance that is selected from the group consisting of an acrylic block copolymer and a thermoplastic polyurethane resin; the mass ratio (A)/(B) of the modified hydrogenated product (A) to the resin (B) is 90/10 to 10/90; and the melt flow rate as determined at a temperature of 230°C under a load of 21 N in accordance with JIS K7210 (2014) is 5g/10 minutes or more.

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
  • B32B 27/00 - Layered products essentially comprising synthetic resin
  • B32B 27/30 - Layered products essentially comprising synthetic resin comprising acrylic resin
  • B32B 27/40 - Layered products essentially comprising synthetic resin comprising polyurethanes
  • C08F 8/04 - Reduction, e.g. hydrogenation
  • C08F 8/46 - Reaction with unsaturated dicarboxylic acids or anhydrides thereof, e.g. maleinisation
  • 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
  • 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 53/00 - 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 75/04 - Polyurethanes

17.

STEERING WHEEL

      
Application Number JP2023026714
Publication Number 2024/019132
Status In Force
Filing Date 2023-07-21
Publication Date 2024-01-25
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Makiyama Norio
  • Wakimoto Yoshiaki
  • Yoshida Yasuhiro

Abstract

This steering wheel comprises a rim core portion, a resin portion molded on the rim core portion, and a skin that coats at least a part of the surface of the resin portion, wherein the skin is an artificial material and satisfies the relationships of expression (1) and expression (2): Expression (1): 0.65≤G/L≤0.95, and Expression (2): 1.05≤G/R≤1.35, where L, R, and G are hardnesses according to a type C durometer.

IPC Classes  ?

  • B62D 1/06 - Rims, e.g. with heating means; Rim covers

18.

BASE FILM FOR VAPOR DEPOSITION, AND VAPOR DEPOSITION FILM

      
Application Number JP2023026859
Publication Number 2024/019169
Status In Force
Filing Date 2023-07-21
Publication Date 2024-01-25
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Nomoto, Yusaku
  • Nakamura, Kimitoshi

Abstract

Provided are: a base film which has high heat resistance, flexibility, and dimensional stability and is used for providing a vapor deposition layer on at least one surface thereof; and a vapor deposition film comprising said base film and a vapor deposition layer. A base film for vapor deposition is composed of a methacrylic resin composition (I) which contains a methacrylic copolymer (a) having 5-73 mass% of methyl methacrylate units, 25-70 mass% of structural units (r) represented by formula (1), 1-48 mass% of α-methylstyrene units, 1-48 mass% of at least one selected from the group consisting of styrene units and maleic anhydride units, and 0-20 mass% of unsubstituted or N-substituted maleimide units, and which has a glass transition temperature of 135 °C or higher, wherein the film thickness is 10-80 μm, and a biaxial stretch ratio is a multiple of 1.5-8. (In formula (I), R1and R2 are the same as described in the specification.)

IPC Classes  ?

  • C08J 5/18 - Manufacture of films or sheets
  • B29C 55/12 - Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
  • C08F 8/30 - Introducing nitrogen atoms or nitrogen-containing groups
  • C08F 8/48 - Isomerisation; Cyclisation
  • C08F 212/12 - Hydrocarbons containing a branched unsaturated aliphatic radical or an alkyl radical attached to the ring
  • C08F 220/14 - Methyl esters
  • C23C 14/20 - Metallic material, boron or silicon on organic substrates

19.

MULTILAYER BASE FILM FOR VAPOR DEPOSITION AND MULTILAYER VAPOR DEPOSITED FILM

      
Application Number JP2023026887
Publication Number 2024/019172
Status In Force
Filing Date 2023-07-21
Publication Date 2024-01-25
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Nomoto, Yusaku
  • Nakamura, Kimitoshi

Abstract

The present invention addresses the problem of providing: a multilayer base film which has high heat resistance, high flexibility and high dimensional stability, and is used for the formation of a vapor deposited layer on at least one surface thereof; and a multilayer vapor deposited film which comprises the multilayer base film and a vapor deposited layer. The present invention provides a multilayer base film for vapor deposition, the multilayer base film comprising: a layer that is formed of a methacrylic resin composition (I) which has a glass transition temperature of 135°C or more, while containing a methacrylic copolymer (a) that comprises 5-73% by mass of a methyl methacrylate unit, 25-70% by mass of a structural unit (r) represented by formula (1), 1-48% by mass of an α-methylstyrene unit, 1-48% by mass of at least one unit that is selected from the group consisting of a styrene unit and a maleic acid anhydride unit, and 0-20% by mass of an unsubstituted or N-substituted maleimide unit; and a layer that is formed of a resin composition (T) which contains a thermoplastic resin (b). (In formula (I), R1and R2 are as defined in the description.)

IPC Classes  ?

  • B32B 27/30 - Layered products essentially comprising synthetic resin comprising acrylic resin
  • B32B 9/00 - Layered products essentially comprising a particular substance not covered by groups
  • B32B 27/00 - Layered products essentially comprising synthetic resin
  • B32B 27/36 - Layered products essentially comprising synthetic resin comprising polyesters
  • C08F 8/32 - Introducing nitrogen atoms or nitrogen-containing groups by reaction with amines

20.

POWER STORAGE DEVICE-USE BINDER, BINDER SOLUTION FOR POWER STORAGE DEVICE, SLURRY FOR ELECTRODE OF POWER STORAGE DEVICE, ELECTRODE OF POWER STORAGE DEVICE, AND POWER STORAGE DEVICE

      
Application Number JP2023025374
Publication Number 2024/014420
Status In Force
Filing Date 2023-07-10
Publication Date 2024-01-18
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Kanno Momotaro
  • Nii Shinsuke
  • Kurashima Kenta

Abstract

Provided are: a power storage device-use binder, which exhibits excellent peel strength, resistance characteristics and foaming suppression when used in an electrode; a binder solution for a power storage device; a slurry for an electrode of power storage device; an electrode of a power storage device; and a power storage device. The power storage device-use binder contains a vinyl alcohol-based polymer and a compound represented by formula (1). In formula (1), R1and R2 are each independently an alkyl group having 1-4 carbon atoms. m and n are each independently an integer between 0 and 25.

IPC Classes  ?

  • H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
  • 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

21.

METHOD FOR PRODUCING MELT/MIXED COMPOSITION AND MELTED/MIXED COMPOSITION

      
Application Number JP2023025925
Publication Number 2024/014514
Status In Force
Filing Date 2023-07-13
Publication Date 2024-01-18
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Murata Yusuke
  • Inada Tsubasa
  • Matsubara Yuki
  • Sano Yuki
  • Sato Yu

Abstract

Provided are a method for producing a melted/mixed composition and a melted/mixed composition. The method comprises a step for melting/mixing a 3-methyl-1-butene polymer and an alkyl radical scavenger. This melting/mixing is performed at 300°C to 380°C. In this method, either an inert gas is introduced into a melting/mixing device and the melting/mixing is performed, or the inside of a melting/mixing device is vacuum degassed and the melting/mixing is performed.

IPC Classes  ?

  • C08J 3/21 - Compounding polymers with additives, e.g. colouring in the presence of a liquid phase the polymer being premixed with a liquid phase
  • C08F 10/14 - Monomers containing five or more carbon atoms
  • C08K 5/07 - Aldehydes; Ketones
  • C08K 5/13 - Phenols; Phenolates
  • C08L 23/18 - Homopolymers or copolymers of hydrocarbons having four or more carbon atoms

22.

COMPOSITION

      
Application Number JP2023024470
Publication Number 2024/009915
Status In Force
Filing Date 2023-06-30
Publication Date 2024-01-11
Owner KURARAY CO., LTD. (Japan)
Inventor Enomoto, Keisuke

Abstract

The present invention relates to a composition which comprises a poly(vinyl alcohol)-based resin (A) and a polyol (B1). The polyol (B1) has a glass transition temperature of 25°C or higher. The polyol (B1) is contained in an amount of 26-130 parts by mass per 100 parts by mass of the poly(vinyl alcohol)-based resin (A) and has a melting point of 210°C or lower and a crystallization temperature of 190°C or lower.

IPC Classes  ?

  • C08L 29/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
  • B32B 27/30 - Layered products essentially comprising synthetic resin comprising acrylic resin
  • B65D 65/40 - Applications of laminates for particular packaging purposes
  • C08K 5/053 - Polyhydroxylic alcohols
  • C08L 3/02 - Starch; Degradation products thereof, e.g. dextrin
  • C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
  • C08L 101/16 - Compositions of unspecified macromolecular compounds the macromolecular compounds being biodegradable

23.

NAPPED ARTIFICIAL LEATHER AND MANUFACTURING METHOD THEREFOR

      
Application Number JP2023024418
Publication Number 2024/009907
Status In Force
Filing Date 2023-06-30
Publication Date 2024-01-11
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Nakayama Kimio
  • Meguro Masashi
  • Iwamoto Akihisa
  • Hishida Hiroyuki

Abstract

This napped artificial leather comprises a nonwoven fabric containing ultrafine fibers and a polymer elastic body, and has a napped surface, wherein the content of the polymer elastic body is 15-35 mass%, the area ratio of the polymer elastic body present on the napped surface is at most 17%, and a napped fiber length is at most 250 μm.

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

24.

MANUFACTURING METHOD FOR HYDRATED ETHYLENE-VINYL ALCOHOL COPOLYMER PELLET

      
Application Number JP2023023915
Publication Number 2024/005048
Status In Force
Filing Date 2023-06-28
Publication Date 2024-01-04
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Nishida, Naoto
  • Jinde, Akinori

Abstract

Provided is a manufacturing method for hydrated EVOH pellets, the method including a first step for introducing a hydrated EVOH, in which the moisture content W1 is 10-90 mass%, into an extruder and performing melt kneading thereof, and a second step for obtaining hydrated EVOH pellets by cutting the hydrated EVOH ejected from the extruder, wherein: the extruder has a back slit; water is discharged from the back slit while the back slit is decompressed by means of a decompression device; the temperature of the hydrated EVOH ejected from the extruder is 80-120°C; a moisture content W2 is 5-50 mass%; and the ratio (W2/W1) of the moisture content W2 with respect to the moisture content W1 is 0.2 or greater and less than 1. According to such a manufacturing method, because it is possible to efficiently reduce the moisture in a hydrated EVOH while suppressing elution of the EVOH, it is possible to manufacture hydrated EVOH pellets with good productivity.

IPC Classes  ?

  • C08J 3/12 - Powdering or granulating
  • B29B 7/84 - Venting or degassing
  • B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
  • B29K 29/00 - Use of polyvinylalcohols, polyvinylethers, polyvinylaldehydes, polyvinylketones or polyvinylketals as moulding material

25.

POLARIZING PLATE, THERMOFORMED BODY, AND THERMOFORMED BODY MANUFACTURING METHOD

      
Application Number JP2023023696
Publication Number 2024/004974
Status In Force
Filing Date 2023-06-27
Publication Date 2024-01-04
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Yamaguchi Mao
  • Isozaki Takanori
  • Matsuo Tsuyoshi

Abstract

Provided is a polarizing plate that has sufficient polarization performance and that hardly develops cracks even when the deformation amount during thermoforming is large. This polarizing plate includes a polarizing film containing polyvinyl alcohol as a main component. The thickness of the polarizing film is greater than 20 μm, and the highly oriented amorphous content of the polarizing film is 10.0-18.0%.

IPC Classes  ?

26.

COMPOSITION CONTAINING VINYL ALCOHOL POLYMER, METHOD FOR PRODUCING SAME, VINYL ALCOHOL POLYMER AND RESIN MATERIAL

      
Application Number JP2023022766
Publication Number 2023/249012
Status In Force
Filing Date 2023-06-20
Publication Date 2023-12-28
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Okamoto, Yuji
  • Kaharu, Taeko
  • Kato, Masaki

Abstract

The present invention relates to a composition (excluding a detergent composition for home use) which contains (A) a vinyl alcohol polymer that contains a monomer unit having an alkyl group, (B) at least one surfactant and (C) water, wherein the vinyl alcohol polymer (A) satisfies formula (1) 0.010 ≤ X/(S × N) ≤ 0.40 (wherein S represents the content (parts by mass) of the monomer unit having an alkyl group relative to 100 parts by mass of all monomer units in the vinyl alcohol polymer (A); X represents the saponification degree (% by mole) of the vinyl alcohol polymer (A); and N represents the viscosity-average polymerization degree of the vinyl alcohol polymer (A)).

IPC Classes  ?

  • C08L 29/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
  • C08F 8/12 - Hydrolysis
  • C08F 216/06 - Polyvinyl alcohol
  • C08K 5/01 - Hydrocarbons
  • C08K 5/098 - Metal salts of carboxylic acids
  • C08K 5/41 - Compounds containing sulfur bound to oxygen

27.

METHOD FOR PRODUCING COPOLYMER HAVING IMPROVED OIL RETAINABILITY

      
Application Number JP2023023199
Publication Number 2023/249093
Status In Force
Filing Date 2023-06-22
Publication Date 2023-12-28
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Oshita Shinya
  • Foster Heith

Abstract

The present invention relates to a method for producing a copolymer, the method comprising a process in which a monomer that contains a 1,3-diene structure and has 4 to 20 carbon atoms is polymerized in a solvent in the presence of an anionic polymerization initiator.

IPC Classes  ?

  • C08F 2/04 - Polymerisation in solution
  • C08C 19/02 - Hydrogenation
  • C08F 36/04 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
  • 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

28.

HYDROGENATED PRODUCT OF BLOCK COPOLYMER, RESIN COMPOSITION, GEL COMPOSITION, CABLE FILLER, CABLE, COSMETIC, LUBRICATING OIL, GREASE, AND METHOD FOR PRODUCING HYDROGENATED PRODUCT OF BLOCK COPOLYMER

      
Application Number JP2023023208
Publication Number 2023/249095
Status In Force
Filing Date 2023-06-22
Publication Date 2023-12-28
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Senda Yasushi
  • Takahashi Naoto
  • Masuda Mikio
  • Satani Ryo
  • Akama Ryu

Abstract

The present invention provides: a hydrogenated product of a block copolymer which has a low glass transition temperature and exhibits suitable flexibility, rubber elasticity, and elongation properties even in a low temperature range; a resin composition; and a method for producing the hydrogenated product of a block copolymer. The hydrogenated product of a block copolymer contains a polymer block (A) including a structural unit derived from an aromatic vinyl compound and a polymer block (B) including a structural unit derived from a conjugated diene compound. The hydrogenated product of a block copolymer satisfies conditions (1) to (3) indicated below. (1) The structural unit derived from a conjugated diene compound in the polymer block (B) has a structural unit derived from butadiene and a structural unit derived from isoprene, and does not have any structural units derived from farnesene. (2) The glass transition temperature of the hydrogenated product of a block copolymer is -50ºC or less. (3) When the weight average molecular weight of the hydrogenated product of a block copolymer is denoted by x and the crystallization temperature is denoted by y (ºC), the hydrogenated product of a block copolymer satisfies 5.8x/100,000 - y > 17.

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
  • C08F 8/04 - Reduction, e.g. hydrogenation
  • 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

29.

MULTILAYER FILM AND PACKAGING MATERIAL USING SAME

      
Application Number JP2023023325
Publication Number 2023/249109
Status In Force
Filing Date 2023-06-23
Publication Date 2023-12-28
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Ishiuchi, Satoshi
  • Yoshida, Kentaro

Abstract

This multilayer film is characterized by having a layer (A) that includes EVOH (a) having an ethylene unit content of 20-50 mol% and a saponification degree of at least 90 mol%, a layer (B) that includes an adhesive resin (b), a layer (C) that includes a polyethylene-based resin (c) having a density of 0.941-0.980 g/cm3, and a layer (D) that includes an ethylene-α-olefin copolymer resin (d) having a density of 0.880-0.920 g/cm3, wherein: there is a layer (A) between at least one set of the layer (C) and the layer (D); there is no layer of which the main component is a resin having a melting point of at least 200 °C or a metal layer having a thickness of at least 1 μm; and, when a temperature from -50 °C to 220 °C is increased (first temperature increase), decreased, and then increased (second temperature increase) at a rate of 10 °C/minute by DSC, the ratio (H1/H2) of the total heat of fusion (H1) at 0-150 °C during the first temperature increase to the total heat of fusion (H2) during the second temperature increase is 0.75-1.01. Thus provided are: a multilayer film having excellent barrier properties, mechanical properties, and recyclability; a multilayer structure; and a packaging material using the same.

IPC Classes  ?

  • B32B 27/32 - Layered products essentially comprising synthetic resin comprising polyolefins
  • B32B 7/027 - Thermal properties
  • B65D 65/40 - Applications of laminates for particular packaging purposes

30.

DOUBLE-ROPE STRUCTURE

      
Application Number JP2023023581
Publication Number 2023/249125
Status In Force
Filing Date 2023-06-26
Publication Date 2023-12-28
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Aso, Yoshifumi
  • Kusudo, Kazumasa
  • Katsuya, Satoshi

Abstract

Provided is a double-rope structure constituted of an inner core and an outer envelope. In the double-rope structure, the inner core comprises a high-strength/high-elasticity fiber of 20 cN/dtex or greater in yarn strength and 400 cN/dtex or greater in yarn elasticity, and inner outer layer properness represented by the following formula (1) is from 0.70 to 1.20. (1): (a2/b2)/Vf × 100 In the formula (1), a represents a diameter of an outer circumference of the inner core, b represents a diameter of an outer circumference of the outer envelope, and Vf represents a volume ratio (%) of the inner core to the total volume of the inner core and the outer envelope.

IPC Classes  ?

  • D07B 1/02 - Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics

31.

METAL-CLAD LAMINATED PLATE ROLL AND METHOD FOR MANUFACTURING SAME

      
Application Number JP2023021023
Publication Number 2023/243491
Status In Force
Filing Date 2023-06-06
Publication Date 2023-12-21
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Nakashima, Takahiro
  • Onodera, Minoru
  • Suzuki, Taiga

Abstract

Provided is a metal-clad laminated plate roll with which it is possible to prevent the occurrence of gauge bands and wrinkles. This metal-clad laminated plate roll is obtained by winding a sheet member and a metal-clad laminated plate that has a metal layer on at least one surface of a resin film into the form of a roll, the bending resistance of the sheet member, as measured in conformance with the method in JIS L 1096 2010 8.22.1 A Bending resistance (Gurley method), being 0.010 mN or greater. For example, at least the surface of the sheet member in the metal-clad laminated plate roll can be configured from a non-metallic material.

IPC Classes  ?

  • B32B 15/08 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
  • B32B 1/08 - Tubular products
  • B65H 75/10 - Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes

32.

BLOCK COPOLYMER

      
Application Number JP2023022009
Publication Number 2023/243648
Status In Force
Filing Date 2023-06-14
Publication Date 2023-12-21
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Takai Junya
  • Fukuhara Tadahito
  • Sakon Kazuki
  • Konishi Hiroyuki

Abstract

A block copolymer that contains a block structural unit (A) having a polylactic acid unit (a) as a main component, and a block structural unit (B) having a polyester unit (b) as a main component, the polyester unit (b) containing a unit derived from an aliphatic diol (b1) and an aliphatic dicarboxylic acid (b2), the aliphatic diol (b1) being a C5-9 aliphatic diol that has an alkyl group as a side chain, the carbon number of the aliphatic dicarboxylic acid (b2) being 5-12, and the number-average molecular weight being greater than 10,000.

IPC Classes  ?

  • C08G 63/60 - Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds

33.

BLOCK COPOLYMER

      
Application Number JP2023022010
Publication Number 2023/243649
Status In Force
Filing Date 2023-06-14
Publication Date 2023-12-21
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Fukuhara Tadahito
  • Takai Junya
  • Sakon Kazuki
  • Konishi Hiroyuki
  • Toshinari Kenta

Abstract

This block copolymer has a block structural unit (A) mainly composed of a polylactic acid unit (a) and a block structural unit (B) mainly composed of a polyester unit (b), wherein: the polyester unit (b) contains units derived from aliphatic diol (b1) and aliphatic dicarboxylic acid (b2); the aliphatic diol (b1) is an aliphatic diol having a carbon number of at least 4 and having an alkyl group as a branched chain; and the number-average molecular weight of the block structural unit (B) is 30,000 to 200,000 (exclusive of 200,000).

IPC Classes  ?

  • C08G 63/60 - Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds

34.

POLYESTER AND MOLDED ARTICLE COMPOSED OF SAME

      
Application Number JP2023022360
Publication Number 2023/243701
Status In Force
Filing Date 2023-06-16
Publication Date 2023-12-21
Owner KURARAY CO., LTD. (Japan)
Inventor Matsugi, Hiroshi

Abstract

This polyester comprises a dicarboxylic acid unit and a diol unit, wherein: the dicarboxylic acid unit includes a structural unit derived from terephthalic acid; the diol unit includes a first diol unit, a second diol unit, and a third diol unit; the first diol unit is a structural unit derived from ethylene glycol; the second diol unit is a structural unit derived from 1,2-propanediol; and the third diol unit is a structural unit derived from a bisphenol A ethylene oxide adduct and/or cyclohexanedimethanol. Said polyester is suitable as a raw material for molding having less influence on the environment, in particular, a raw material for extrusion blow molding, and a molded article having favorable impact resistance is obtained by using said polyester.

IPC Classes  ?

35.

COATING AGENT AND MULTILAYER STRUCTURE USING SAME

      
Application Number JP2023019219
Publication Number 2023/228955
Status In Force
Filing Date 2023-05-23
Publication Date 2023-11-30
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Sakano, Takeshi
  • Nonaka, Yasuhiro

Abstract

The present invention provides a coating agent which contains a modified ethylene-vinyl alcohol copolymer (A), wherein: the modified ethylene-vinyl alcohol copolymer (A) comprises structural units (Ia), (Ib) and (Ic) represented by the specific formulae; the respective content ratios a, b and c (% by mole) of the structural units (Ia), (Ib) and (Ic) satisfy formulae (1) to (3); and the degree of saponification (DS), as expressed by formula (4), of the modified ethylene-vinyl alcohol copolymer (A) is 90% by mole or more. A solution of this coating agent exhibits excellent storage stability; and a coating film obtained by applying this coating agent has good appearance and good gas barrier properties. (1): 21 ≤ a ≤ 55 (2): 0.1 ≤ c ≤ 10 (3): (100 - (a + c)) × 0.9 ≤ b ≤ (100 - (a + c)) (4): DS = ((total number of moles of hydrogen atoms from among X, Y and Z)/(total number of moles of X, Y and Z)) × 100

IPC Classes  ?

  • C09D 129/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
  • B32B 27/10 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of paper or cardboard
  • 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
  • C09D 7/20 - Diluents or solvents
  • C09D 7/61 - Additives non-macromolecular inorganic
  • C09D 123/08 - Copolymers of ethene

36.

SQUEEZABLE HIGH BARRIER POLYOLEFIN TUBES

      
Application Number JP2023012520
Publication Number 2023/228554
Status In Force
Filing Date 2023-03-28
Publication Date 2023-11-30
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Balemans, Frank
  • Kitamura, Masahiro

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-vapor 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 1/08 - Tubular products
  • B32B 9/00 - Layered products essentially comprising a particular substance not covered by groups
  • B32B 27/32 - Layered products essentially comprising synthetic resin comprising polyolefins

37.

RESIN COMPOSITION, CURED PRODUCT, LAMINATE, AND METHOD FOR PRODUCING LAMINATE

      
Application Number JP2023018355
Publication Number 2023/224053
Status In Force
Filing Date 2023-05-16
Publication Date 2023-11-23
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Inatomi Atsushi
  • Hosoki Tomoya
  • Nakahara Atsuhiro

Abstract

22 = CR1R2(I) CHR6= CR7R8 (II)

IPC Classes  ?

  • C08F 222/30 - Nitriles
  • C08F 2/40 - Polymerisation using regulators, e.g. chain terminating agents using retarding agents

38.

RESIN COMPOSITION, CURED PRODUCT, LAMINATE, AND METHOD FOR PRODUCING LAMINATE

      
Application Number JP2023018356
Publication Number 2023/224054
Status In Force
Filing Date 2023-05-16
Publication Date 2023-11-23
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Inatomi Atsushi
  • Nakahara Atsuhiro

Abstract

Provided are a resin composition from which an adhesive having excellent heat resistance and moisture resistance can be obtained, and a cured product using the same. Also provided are a laminate using the cured product, and a method for producing a laminate. The resin composition contains 1,1-dicyanoethylene (A) and a polymerizable monomer (B) represented by general formula (I), and is characterized in that the content of 1,1-dicyanoethylene (A) is 2.0-99.9 mass % of the total of 1,1-dicyanoethylene (A) and the polymerizable monomer (B). CHR1= CR2R3 (I)

IPC Classes  ?

  • C08F 222/30 - Nitriles
  • C08F 2/40 - Polymerisation using regulators, e.g. chain terminating agents using retarding agents

39.

RESIN COMPOSITION AND MOLDED OBJECT

      
Application Number JP2023017567
Publication Number 2023/219103
Status In Force
Filing Date 2023-05-10
Publication Date 2023-11-16
Owner KURARAY CO., LTD. (Japan)
Inventor Nomoto, Yusaku

Abstract

The problem to be solved by the present invention is to provide a resin composition having various excellent physical properties such as heat resistance, surface hardness, impact resistance, and surface appearance. The present invention provides a resin composition containing: 5-49 parts by mass of a methacrylic copolymer (A) comprising 5-97 mass% of methyl methacrylate units, 1-70 mass% of structural units (R) represented by formula (I), 1-48 mass% of α-methylstyrene units, 1-48 mass% of at least one selected from the group consisting of styrene units and maleic anhydride units, and 0-20 mass% of unsubstituted or N-substituted maleimide units; 51-95 parts by mass of one or more styrene resins (B) selected from the group consisting of ABS resins, AES resins, ASA resins, and AS resins; and 0-30 parts by mass of a methacrylic resin (C). (In formula (I), R1and R2 are as defined in the description.)

IPC Classes  ?

  • C08L 51/04 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
  • C08F 8/48 - Isomerisation; Cyclisation
  • C08F 212/08 - Styrene
  • C08F 220/14 - Methyl esters
  • C08L 33/12 - Homopolymers or copolymers of methyl methacrylate
  • C08L 33/14 - Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
  • C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers

40.

IMMUNOISOLATION DEVICE

      
Application Number JP2023016713
Publication Number 2023/210765
Status In Force
Filing Date 2023-04-27
Publication Date 2023-11-02
Owner
  • KURARAY CO., LTD. (Japan)
  • KURARAY KURAFLEX CO., LTD. (Japan)
Inventor
  • Kobayashi, Goro
  • Ayano, Satoru
  • Fujita, Akio
  • Matsushita, Kazuhiro
  • Tomoi, Masanori

Abstract

The present invention addresses the problem of providing an immunoisolation device: that realizes both a reduction in diffusion distance, which is effective for improving the permeation of physiologically active substance, nutrients, etc., and improved durability that can withstand long-term implantation; and that includes a cell-capturing layer that can prevent the departure of cells or a cluster of cells. Provided is a immunoisolation device comprising a cell-capturing layer (A) and an immunoisolation layer (B) that covers the cell-capturing layer (A). The cell-capturing layer (A) includes a fibrous structure (a1).

IPC Classes  ?

  • A61L 27/16 - Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • A61L 27/20 - Polysaccharides
  • A61L 27/52 - Hydrogels or hydrocolloids

41.

IMMUNOISOLATION DEVICE

      
Application Number JP2023016742
Publication Number 2023/210775
Status In Force
Filing Date 2023-04-27
Publication Date 2023-11-02
Owner
  • KURARAY CO., LTD. (Japan)
  • TOKYO WOMEN'S MEDICAL UNIVERSITY (Japan)
Inventor
  • Kobayashi, Goro
  • Ayano, Satoru
  • Fujita, Akio
  • Homma, Jun
  • Sekine, Hidekazu
  • Shimizu, Tatsuya

Abstract

The problem to be solved by the present invention is to provide: an immunoisolation device which can achieve both of the reduction in diffusion distance effective for the improvement in permeability of a substance such as a physiologically active substance and a nutrient and the improvement in durability for withstanding transplantation for a long period of time; and an immunological control technology using a cell sheet. The present invention provides an immunoisolation device provided with a sheet-like cell mass containing cells and an extracellular matrix and an immunoisolation layer that covers the cell mass.

IPC Classes  ?

  • A61L 27/16 - Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • A61L 27/20 - Polysaccharides
  • A61L 27/22 - Polypeptides or derivatives thereof
  • A61L 27/36 - Materials for prostheses or for coating prostheses containing ingredients of undetermined constitution or reaction products thereof
  • A61L 27/38 - Animal cells
  • A61L 27/52 - Hydrogels or hydrocolloids

42.

ADSORPTION FILTER

      
Application Number JP2023010837
Publication Number 2023/189806
Status In Force
Filing Date 2023-03-20
Publication Date 2023-10-05
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Yoshinobu, Hiroe
  • Hanamoto, Tetsuya
  • Takahashi, Keita

Abstract

An adsorption filter according to the present invention is composed of a molded body including activated carbon and a binder, and the pore volume thereof of pores having diameters of 15-30 μm, with reference to the volume of the adsorption filter, measured via mercury porosimetry is 0.06-0.30 cm3/cc.

IPC Classes  ?

  • B01D 39/20 - Other self-supporting filtering material of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires
  • 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
  • C02F 1/28 - Treatment of water, waste water, or sewage by sorption

43.

AQUEOUS SOLUTION, COATING GENT, ADHESIVE, PAPER PROCESSING AGENT, DISPERSANT FOR EMULSION POLYMERIZATION, AQUEOUS EMULSION, MULTILAYER BODY AND METHOD FOR PRODUCING AQUEOUS EMULSION

      
Application Number JP2023013207
Publication Number 2023/190884
Status In Force
Filing Date 2023-03-30
Publication Date 2023-10-05
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Fujimori Misuzu
  • Imaoka Yoriko

Abstract

The purpose of the present invention is to provide an aqueous solution which is configured such that the aqueous solution itself or coated paper or the like obtained using the aqueous solution is excellent in terms of storage stability, coatability, air resistance, silicone curability, adhesion between a release layer and a base material, initial adhesion and water-resistant adhesion. The present invention provides an aqueous solution which contains a vinyl alcohol polymer that comprises a carbonyl group, a formyl group and an alkenyl group in a same molecule or in different molecules.

IPC Classes  ?

  • C08F 16/06 - Polyvinyl alcohol
  • B32B 27/30 - Layered products essentially comprising synthetic resin comprising acrylic resin
  • C08F 2/30 - Emulsion polymerisation with the aid of emulsifying agents non-ionic
  • C09D 129/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
  • C09J 129/04 - Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
  • C09K 23/52 - Natural or synthetic resins or their salts
  • 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

44.

TRANSPARENT LAMINATE

      
Application Number JP2023012855
Publication Number 2023/190706
Status In Force
Filing Date 2023-03-29
Publication Date 2023-10-05
Owner KURARAY CO., LTD. (Japan)
Inventor
  • Takahashi, Tomohiro
  • Hashimoto, Kazuhisa
  • Onishi, Ikuo
  • Lazar, Ion

Abstract

Provided is a transparent laminate capable of inhibiting stray light caused by external light. A transparent laminate (100) according to the present disclosure comprises: an inner transparent base material (2); an outer transparent base material (1) disposed to face the inner transparent base material (2); and a function layer (45) disposed between the inner transparent base material (2) and the outer transparent base material (1) or at a side opposite to the outer transparent base material (1) across the inner transparent base material (2). The function layer (45) includes a louver layer (4) in which light transparent bands (9) and light absorption bands (10) are alternately arranged in the in-plane direction of the function layer (45), and a reflection layer (5) that, upon incidence of visible light, directionally reflects part of the incident visible light in directions other than in a direction of specular reflection.

IPC Classes  ?

45.

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

46.

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

47.

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

48.

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

49.

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

50.

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

51.

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

52.

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

53.

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

54.

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

55.

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

56.

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

57.

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

58.

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

59.

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

60.

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

61.

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

62.

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

63.

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

64.

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

65.

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

66.

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

67.

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

68.

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  ?

69.

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

70.

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'

71.

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

72.

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

73.

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

74.

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

75.

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

76.

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

77.

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

78.

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

79.

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

80.

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

81.

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

82.

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

83.

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

84.

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

85.

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

86.

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

87.

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

88.

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

89.

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

90.

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

91.

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

92.

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

93.

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

94.

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

95.

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

96.

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

97.

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

98.

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

99.

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

100.

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
  1     2     3     ...     21        Next Page