The present invention provides a catalyst in which an alkali metal element and at least one first metal element selected from among boron, magnesium, zirconium and hafnium are supported by a silanol group-containing carrier, wherein the average particle diameter of a compound of the first metal element is 0.4-50 nm, and expression (1) is satisfied when the molar ratio of the alkali metal element to the first metal element is X, the BET specific surface area of the catalyst is Y (m2/g), and the number of silanol groups per unit area of the catalyst (per nm2) is Z. Expression (1): 0.9×10-21 (g/unit)=X/(Y×Z)<10.8×10-21 (g/unit).
C07C 51/09 - Preparation of carboxylic acids or their salts, halides, or anhydrides from carboxylic acid esters or lactones
C07C 57/05 - Preparation by oxidation in the gaseous phase
C07C 67/30 - Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
A film for packaging a food, the film comprising a resin composition that includes a vinyl chloride resin (A), a plasticizer (B), and an anti-fogging agent (C), wherein the film for packaging a food contains, as the anti-fogging agent (C), 1.5-4.0 parts by mass of diglycerol ester, 0.1-1.5 parts by mass of glycerol monoester, and 0.1-3.0 parts by mass of an ethylene oxide adduct with resepct to 100 parts by mass of the vinyl chloride resin (A).
One aspect of the present invention provides an epoxy resin composition for carbon-fiber-reinforced composite materials, which can provide a carbon-fiber-reinforced composite material that has an excellent compression property under a moisture-absorbing high-temperature condition and has a small difference between a compression property under a moisture-unabsorbing room-temperature condition and the compression property under a moisture-absorbing high-temperature condition. An epoxy resin composition for carbon-fiber-reinforced composite materials, which comprises a constituent element (A), a constituent element (B) and a constituent element (C) which are mentioned below, wherein the sum total of the content of the constituent element (A) and the content of the constituent element (B) is 85 to 100 parts by mass relative to 100 parts by mass of all of epoxy resins contained in the epoxy resin composition, the content of the constituent element (A) is 40 to 60 parts by mass relative to 100 parts by mass of all of the epoxy resins contained in the epoxy resin composition, the content of the constituent element (B) is 30 to 45 parts by mass relative to 100 parts by mass of all of the epoxy resins contained in the epoxy resin composition, and the content of the constituent element (C) is an amount that meets the requirement represented by formula (1). The constituent element (A): a bisphenol F-type epoxy resin that has a liquid form at 25ºC. The constituent element (B): a polyfunctional amine-type epoxy resin. The constituent element (C): 3,3'-diaminodiphenylsulfone. 1.04 = x/y = 1.35 ··· formula (1) In formula (1), x represents the number of moles of active hydrogen atoms in an amine in the constituent element (C); and y represents the number of moles of all of the epoxy groups in the epoxy resin composition.
A catalyst for producing an unsaturated aldehyde and an unsaturated carboxylic acid, wherein: the integrated pore volume (A) of pores in the catalyst, said pores having a pore diameter of 1-100 µm inclusive, is 0.12-0.19 ml/g inclusive; and the ratio (A/B) is 0.30-0.87 inclusive [wherein A stands for the aforesaid integrated pore volume (A); and B stands for the integrated pore volume (B) of pores having a pore diameter of 1-100 µm in a portion, said portion not passing through a Tyler 6 mesh screen, of a crushed material which is obtained by crushing the catalyst under specific conditions].
B01J 35/10 - Solids characterised by their surface properties or porosity
C07C 45/35 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds in propene or isobutene
C07C 51/25 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
C07C 57/05 - Preparation by oxidation in the gaseous phase
This flame retardant metal-resin composite material, in which metal layers are laminated on both sides of a core material layer containing a resin, is characterized in that the core material layer contains a metal hydroxide and a resin, the combustion calorific value of the core material layer is 2.0 MJ/kg, and the surface material peeling strength of the metal-resin composite material is 2.4 N/mm or more. Preferably, the metal-resin composite material further has an adhesive layer between the core material layer and the metal layer, wherein the adhesive layer contains a resin having a polar group in a side chain thereof.
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
E04B 1/94 - Protection against other undesired influences or dangers against fire
6.
METHOD OF PRODUCING (METH)ACRYLIC ACID OR ESTER THEREOF
The present invention relates to a method of producing (meth)acrylic acid or ester thereof which includes a step of generating distillation gas from process fluid that comprises (meth)acrylic acid or ester thereof under reduced pressure effected by a reduced pressure device and generating a condensate from the distillation gas using a vertical multitubular heat exchanger, wherein the vertical multitubular heat exchanger has a spray nozzle that can spray droplets having a Sauter mean diameter of 570 to 1500 µm and the average gas flow rate of the uncondensed distillation gas that flows into a relay space from an extraction chamber is 15.0 m/s or less.
The purpose of the present invention is to provide a separation method by which a light liquid and a heavy liquid can be efficiently separated from a mixed liquid containing a light liquid, a heavy liquid, and an emulsion of the light liquid and the heavy liquid, such as an extracted liquid from an emulsified layer in vicinity of an interface in an extraction column. The present invention relates to a separation method for continuously introducing, into a separation tank, a mixed liquid containing a light liquid, a heavy liquid having a specific gravity larger than that of the light liquid, and an emulsion of the light liquid and the heavy liquid and continuously separating the light liquid and the heavy liquid from the mixed liquid, wherein a specific separation layer is used for the separation tank.
B01D 17/025 - Separation of non-miscible liquids by gravity, in a settling tank
B01D 17/00 - Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
B01D 17/032 - Separation of non-miscible liquids by gravity, in a settling tank provided with special equipment for removing at least one of the separated liquids
B01D 17/12 - Auxiliary equipment particularly adapted for use with liquid-separating apparatus, e.g. control circuits
C07C 67/52 - Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
The present invention provides an oil recovery agent that has properties for reducing the viscosity of oil and improving fluidity (viscosity reduction properties) and properties for quickly separating after dispersion in oil (immediate separation properties), and that enables quick recovery of oil. This oil recovery agent contains a polyvinyl-alcohol-based resin in which the water contact angle when the resin is formed into a film is 70° or smaller.
C09K 8/588 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
E21B 43/22 - Use of chemicals or bacterial activity
E21B 43/34 - Arrangements for separating materials produced by the well
The objective of the present invention is to provide a catalyst with which pressure losses and coking are suppressed and with which it is possible to produce a target substance with a high yield, when the catalyst is used to produce the target substance by causing a material to undergo a gas phase catalytic oxidation reaction. The present invention relates to a ring-shaped catalyst which is used when producing a target substance by causing a material to undergo a gas phase catalytic oxidation reaction and which has a straight body portion and a hollow body portion, wherein the length of the straight body portion is less than the length of the hollow body portion, and the catalyst has a concave curve from an end portion of the straight body portion to an end portion of the hollow body portion in at least one end portion of the catalyst.
B01J 23/887 - Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups
C07C 45/35 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds in propene or isobutene
C07C 51/215 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation with molecular oxygen of saturated hydrocarbyl groups
C07C 57/05 - Preparation by oxidation in the gaseous phase
C07C 45/29 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation of hydroxy groups
C07C 51/23 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation with molecular oxygen of oxygen-containing groups to carboxyl groups
Provided is a prepreg comprising a (A) component, a (B) component, and a (C) component, wherein the (A) component is a reinforced fiber substrate, the (B) component is an epoxy resin composition, and the (C) component is a (c1) component or a (c2) component, the (c1) component including polyamide particles and thermally-curable polyimide particles, and the (c2) component including spherical particles of a polyamide that has a melting point of 140ºC-175ºC.
C08J 5/24 - Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
B29C 70/02 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements and fillers incorporated in matrix material, forming one or more layers, with or without non-reinforced or non-filled layers
This partition member has a thickness direction and a surface direction orthogonal to the thickness direction, and constitutes a partition, in the thickness direction, between individual batteries constituting a battery pack, or an individual battery and a member other than the individual batteries constituting the battery pack. This partition member is characterized by having therein a fluid with a boiling point at normal pressure of between 80°C and 250°C, inclusive, and a flow path for the fluid, which extends along the surface direction, the fluid being held by a fluid holding part, and the fluid holding part being sealed by an enveloping material.
H01M 10/647 - Prismatic or flat cells, e.g. pouch cells
H01M 10/653 - Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
H01M 10/6552 - Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
H01M 10/6569 - Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
12.
PARTITION MEMBER, ASSEMBLED BATTERY AND METHOD FOR CONTROLLING HEAT TRANSFER IN AN ASSEMBLED BATTERY
Provided are: a partition member that can control heat transfer between unit batteries in an assembled battery that includes a plurality of unit batteries; an assembled battery; and a method for controlling the assembled battery. The partition member partitions between unit batteries configuring the assembled battery, and is a partition member having two surfaces in the thickness direction, wherein the thermal resistance (?1) per unit area in the thickness direction satisfies formula 1 when the average temperature of one of the two surfaces exceeds 180°C, and the thermal resistance (?2) per unit area in the thickness direction satisfies formula 2 when the average temperature of both of the two surfaces does not exceed 80°C. ?1 = 5.0 x 103 [m2·K/W] (Formula 1) ?2 = 4.0 x 103 [m2·K/W] (Formula 2)
H01M 50/489 - Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
H01M 10/651 - Means for temperature control structurally associated with the cells characterised by parameters specified by a numeric value or mathematical formula, e.g. ratios, sizes or concentrations
H01M 10/658 - Means for temperature control structurally associated with the cells by thermal insulation or shielding
13.
CATALYST, ACRYLIC ACID PRODUCTION METHOD, AND CATALYST PRODUCTION METHOD
The purpose of the present invention is to provide a catalyst capable of suppressing pressure loss to be a low level and producing an unsaturated carboxylic acid with high selectivity, when gas phase contact oxidation of an unsaturated aldehyde and an oxygen-containing gas is performed, using a catalyst, to produce a corresponding unsaturated carboxylic acid. The present invention pertains to a catalyst, formed in a ring shape or a cylindrical shape, that is used for performing a gas phase contact oxidation of an unsaturated aldehyde and an oxygen-containing gas to produce the corresponding unsaturated carboxylic acid and that has an outer peripheral part inclined with respect to the center line.
B01J 23/887 - Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups
14.
POROUS BASE MATERIAL, POROUS ELECTRODE, CARBON FIBER PAPER, METHOD FOR MANUFACTURING CARBON FIBER PAPER, AND METHOD FOR MANUFACTURING POROUS BASE MATERIAL
A porous base material and porous electrode provided with both gas permeability suitable for a gas diffusion layer for a fuel cell vehicle and mechanical strength that can withstand continuous roll to roll processing, and a porous electrode with superior diffusion properties for electrolytes suitable for electrodes used in redox flow batteries, have been desired. Provided is a porous base material wherein carbon fiber (A) with an average fiber diameter of 10 - 20 µm, average fiber length of 2 - 30 mm, modulus of elasticity in tension of 200 - 600 GPa and tensile strength of 3000 - 7000 MPa is bonded by a carbon binder (D).
The method comprises steps of: using a vertical multi-tubular heat exchanger having a tubular body, an upper side tube plate and a lower side tube plate disposed on the upper extremity side and the lower extremity side of the tubular body respectively, a plurality of heat-transfer tubes erected between the upper-side tube plate and the lower-side tube plate, and lid parts each disposed on the upper side of the upper-side tube plate and the lower side of the lower-side tube plate, the upper-side tube plate and the lid part forming a receiving chamber whereinto a distillation gas is introduced, which is then cooled while passing through the interior of the heat-transfer tubes and turned into a condensation solution; and introducing into the receiving chamber a solution containing a polymerization inhibitor. Some of the plurality of heat-transfer tubes have upper ends thereof protruding above the upper-side tube plate while the rest are non-protruding. The solution containing the polymerization inhibitor, which has come in contact with the distillation gas inside the receiving chamber, forms a liquid-flow layer of a predetermined liquid depth above the upper side tube plate.
C07C 51/44 - Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
C07C 57/075 - Use of additives, e.g. for stabilisation
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
F28F 9/22 - Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
F28F 19/00 - Preventing the formation of deposits or corrosion, e.g. by using filters
16.
POLYMER, METHOD FOR PRODUCING POLYMER AND POLYMER FLOCCULANT
Provided is a polymer flocculant which is capable of controlling the structure of a polymer that is a copolymerization product of a monomer (a) having a structure derived from formula (I) in each molecule and a water-soluble unsaturated monomer (b) having a polymerizable unsaturated bond in each molecule, and which has a branched or cross-linking structure, and is excellent in water-solubility and water dispersibility, In formula (I), R1 and R2 are respectively a linear or branched functional group configured of atoms selected from the group consisting of carbon not having a carbon- carbon unsaturated bond, oxygen, nitrogen, and hydrogen; W is a non-metal element of the group 15; X and Y are each a linear or branched functional group configured of atoms selected from the group consisting of carbon, oxygen, nitrogen, and hydrogen, and each have at least one carbon-carbon unsaturated bond, provided that X and Y have different structures; and Z is a chlorine ion, a bromine ion, or an iodine ion.
The application relates to stably producing high-quality (meth)acrylic acid, by performing an energetically advantageous operation resulting from a lowered heat load in a distillation step of a (meth)acrylic acid production process, and by preventing the occurrence of an oil-water suspension state and maintaining good separation of water in an extraction step. A method may include an oxidation reaction to obtain a reaction gas containing (meth)acrylic acid; bringing the reaction gas into gas-liquid contact with water, to yield a (meth)acrylic acid aqueous solution; bringing the (meth)acrylic acid aqueous solution and an extraction solvent into contact with each other, to extract crude (meth)acrylic acid; and distilling (meth)acrylic acid from the crude (meth)acrylic acid. A solution containing a discharge solution discharged from at least one of the steps is used as a collected solution, which is held for 1-60 days, and the held collected solution is fed to the extraction step.
Provided are the following: a tow prepreg which exhibits excellent draping properties and tackiness, exhibits little stickiness, can be unwound at high speed, and is obtained by impregnating a reinforcing fiber bundle with a matrix resin composition which contains component (A) (an epoxy resin), component (B) (dicyandiamide), component (C) (a curing accelerator) and component (D) (core-shell type rubber particles), in which the content of component (D) relative to component (A) is 20-70 parts by mass relative to 100 parts by mass of component (A), which has a viscosity at 30°C of 3-80 Pa·sec, and which has a minimum viscosity, as obtained when carrying out viscosity measurements by increasing the temperature from room temperature to 130°C at a rate of temperature increase of 2ºC/min, of 0.04-1 Pa·sec; and a composite material-reinforced pressure vessel which is obtained by using the tow prepreg, has few voids in a reinforcing layer, has a high burst pressure, and has an excellent external appearance due to an appropriate degree of resin flow.
A porous electrode substrate in which carbon fibers are dispersed in the structure thereof have a fiber diameter of 3-15 micron and a fiber length of 2-30 mm, and are bound to one another by carbonized resin, wherein the pore distribution satisfies the following conditions when measuring the porous electrode substrate using mercury intrusion porosimeter. (Conditions) A pore distribution curve in which the horizontal axis is a common logarithmic scale, wherein the diameter interval of 1-100 micron comprises 80 or more measurement points at equal intervals along the common logarithmic scale, and the skewness S of the pore distribution in the diameter interval of 1-100 micron is -2.0
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
H01M 4/86 - Inert electrodes with catalytic activity, e.g. for fuel cells
A potting material for membrane modules which is formed of an epoxy resin composition, in which the mass change ratio of a cured product of the epoxy resin composition after being immersed in diethylene glycol methyl ethyl ether at 40°C for one week is ~10% or less, and the mass change ratio thereof after being immersed in tetrahydrofurfuryl acrylate at 40°C for one week is ~5% or less, and a hollow fiber membrane module which uses the potting material for membrane modules.
A method for producing a protein using a plant, said method comprising a step for infecting a plant with an Agrobacterium strain that has a polynucleotide encoding the target protein and a step for, after the infection, further growing the plant so as to express the target protein in the plant, wherein the efficiency of the target protein production is improved by giving a damaging stimulus to the roots of the plant.
The present invention relates to a method for producing a vinylamine unit-containing polymer, the method comprising: preparing a mixture for polymerization (a) containing N-vinylformamide as a monomer component by using crude N- vinylformamide which contains the N-vinylformamide and formamide and has a content of the formamide of 1 part by mass or more with respect to 100 parts by mass of the N-vinylformamide; obtaining a polymerization product (b) containing an N- vinylformamide unit-containing polymer and formamide by polymerizing the monomer component in the mixture for polymerization (a); and obtaining a hydrolysis product (c) containing a vinylamine unit-containing polymer through a hydrolysis treatment of the polymerization product (b) using an acid or a base.
C07C 231/12 - Preparation of carboxylic acid amides by reactions not involving the formation of carboxamide groups
C07C 233/03 - Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals with carbon atoms of carboxamide groups bound to hydrogen atoms
C08F 26/02 - 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 a single or double bond to nitrogen or by a heterocyclic ring containin by a single or double bond to nitrogen
23.
GAMMA-BUTYROLACTONE COMPOSITION AND METHOD FOR PRODUCING SAME
The present invention addresses the issue of providing a highly pure gamma-butylolactone (GBL) that is capable of preventing the occurrence of unintended reactions during use, caused by high GBL acidity. This gamma-butylolactone composition contains gamma-butylolactone and a nitrogen-containing compound and is characterized by the gamma-butylolactone content being at least 99.0% by mass and the total nitrogen-containing compound content, in terms of nitrogen atoms, being 0.1-1,000 ppm by mass.
The present invention relates to a external-perfusion hollow-fiber membrane module containing a hollow-fiber membrane bundle including a plurality of hollow- fiber membranes; and a casing that houses the hollow-fiber membrane bundle, wherein the hollow- fiber membrane bundle has one end that is fixed to an inside of the casing by a potting portion in an open state, and the external-perfusion hollow-fiber membrane module is configured to perform degassing on a gas contained in a liquid inside the casing, the gas being introduced into an inside from an outer surface of the hollow-fiber membrane.
B01D 61/00 - Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
The present invention relates to an epoxy-resin composition comprising the following components (A), (B), (D) and (E), a film made of the epoxy-resin composition, a prepreg and a fiber-reinforced plastic. The present invention can provide an epoxy resin composition capable of achieving both a processability of a prepreg at room temperature and a suppression of voids in the molded product. Also, the present invention can provide a fiber-reinforced plastic having excellent mechanical properties, especially excellent fracture toughness and heat tolerance, are obtained by using the epoxy-resin composition. component (A): an epoxy resin having an oxazolidone-ring structure in the molecule; component (B): a bisphenol bifunctional epoxy resin with a number-average molecular weight of at least 600 but no more than 1300, which does not have an oxazolidone-ring structure in the molecule component (D): a triblock copolymer; and component (E): a curing agent.
C08G 59/20 - Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups characterised by the epoxy compounds used
C08J 5/24 - Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
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 63/00 - Compositions of epoxy resins; Compositions of derivatives of epoxy resins
An epoxy resin composition in which the epoxy resin composition includes components (A1) (C1) as set forth below, has a component (B1) content of 8-20 parts by mass per 100 parts by mass of the component (A1), and has a component (C1) content of 12-110 parts by mass per 100 parts by mass of the component (A1). Component (A1): an epoxy resin; component (B1): a boron trihalide amine complex; component (C1): a rubber particle.
The purpose of the present invention is to provide a production method for polybutylene terephthalate (PBT) having good color tones, said method using a biological resource-derived 1, 4-butanediol (BG). This production method for PBT has: a step in which a dicarboxylic acid component and a diol component including a raw material 1, 4-BG having a nitrogen atom content of 0.01-50 ppm by mass are esterized or transesterified; and a polycondensation step in which PBT is obtained from the reaction product. The gamma-butyrolactone content in the raw material 1, 4-BG is 1-100 ppm by mass.
The present invention relates to a method for manufacturing a porous electrode base material including the following steps [1] to [3]: [1] a step for dispersing short carbon fibers (A) to form a sheet-form product; [2] a step for adding, to the sheet-form product, at least one phenolic resin (c) selected from a group consisting of a water soluble phenolic resin and a water dispersible phenolic resin along with carbon powder (d) to form a precursor sheet; and [3] a step for carbonizing the precursor sheet at the temperature of 1000°C or higher, after the step [2].
A metal adsorption acrylic fiber wherein the strontium adsorption rate is 85% or more when the strontium adsorption rate is measured using the following measurement method. A strontium adsorption rate measurement method (strontium 0.1 ppm measurement method) involves immersing a metal adsorption acrylic fiber into an immersion fluid, collecting the immersion fluid as a testing solution 24 hours after beginning the immersion, analyzing the quantity of strontium in the testing solution, obtaining the concentration (C1) (ppm) of strontium in the testing solution, creating a contrast solution, analyzing the quantity of strontium in the contrast solution as in the case with the testing solution, obtaining the concentration (C2) (ppm) of strontium in the contrast solution, and calculating the strontium adsorption rate of the metal adsorption acrylic fiber by using the following equation: strontium adsorption rate (%) = {(C2-C1)/C2}×100.
D01F 6/18 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
AGGLOMERATED BORON NITRIDE PARTICLES, COMPOSITION CONTAINING SAID PARTICLES, AND THREE-DIMENSIONAL INTEGRATED CIRCUIT HAVING LAYER COMPRISING SAID COMPOSITION
To provide a composition for a three-dimensional integrated circuit capable of forming a filling interlayer excellent in thermal conductivity also in a thickness direction, using agglomerated boron nitride particles excellent in the isotropy of thermal conductivity, disintegration resistance and kneading property with a resin. A composition for a three-dimensional integrated circuit, comprising agglomerated boron nitride particles which have a specific surface area of at least 10 m2/g, the surface of which is constituted by boron nitride primary particles having an average particle size of at least 0.05 µm and at most 1 µm, and which are spherical, and a resin (A) having a melt viscosity at 120°C of at most 100 Pa.cndot.s.
The present invention is aimed to provide a 1,4-butanediol-containing composition having high thermal stability as compared with conventional 1,4BG The present invention is concerned with a 1,4-butanediol-containing composition having a concentration of 1,4-butanediol of 99.00 % by weight or more and not more than 99.99 % by weight and containing an amide compound in a concentration, as converted into a nitrogen atom, of from 1.0 to 50 ppm by weight.
Disclosed is a method for producing a conjugated diene by subjecting a monoolefin having a carbon atom number of 4 or more and an oxygen gas to an oxidative dehydrogenation reaction by using a molybdenum-containing metal oxide catalyst under heat removal with a coolant, wherein an amount of molybdenum adhered onto a cooling heat transfer surface within a reactor is kept at not more than 20 mg/m2, or not only a surface roughness Ra of a cooling heat transfer surface within a reactor is not more than 3 tan, but a temperature difference between a reaction temperature and a coolant temperature is in the range of from 5 to 220 °C.
C07C 5/48 - Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor with oxygen as an acceptor
Provided is a method for producing a good epoxy resin composition for obtaining fiber-reinforced plastics. A production method for obtaining a fiber-reinforced composite material by impregnating a fiber assembly with an epoxy resin composition and then curing the epoxy resin composition, wherein the epoxy resin composition contains a component [A], a component [B] and a component [C] respectively satisfying the conditions described below. When the blending amount of the component [B] is set to b parts by mass and the blending amount of the component [C] is set to c parts by mass relative to 100 parts by mass of the component [A] contained in the epoxy resin composition, formula (2) is satisfied within the range of formula (1), formula (4) is satisfied within the range of formula (3), and formula (6) is satisfied within the range of formula (5). The epoxy resin composition is blended at a temperature of 60-80°C (inclusive).
According to the present invention, a porous electrode substrate with greater sheet strength, lower production cost, and excellent gas permeability and conductivity as well as its manufacturing method are provided. Also provided are a precursor sheet for forming such a substrate, and a membrane electrode assembly and a polymer electrolyte fuel cell containing such a substrate. The method for manufacturing such a porous electrode substrate includes the following steps [1] ¨ [3]: [1] a step for manufacturing a sheet material in which short carbon fibers (A) are dispersed; [2] a step for manufacturing a precursor sheet by adding a water-soluble phenolic resin and/or water-dispersible phenolic resin to the sheet material; and [3] a step for carbonizing the precursor sheet at a temperature of 1000 C or higher. The present invention also relates to a porous electrode substrate obtained by such a manufacturing method as well as a precursor sheet to be used for manufacturing the substrate, a membrane electrode assembly and a polymer electrolyte fuel cell.
The purpose of the present invention is to provide a cosmetic composition, a hair cosmetic and a hair treatment cosmetic, each of which is superior in the adsorption amount of a cationic surfactant and is also superior in the viscosity or smooth sensation upon application when used as a hair cosmetic, and which contains a copolymer. The present invention relates to a cosmetic composition which comprises a copolymer having a constituent unit corresponding to a vinyl monomer (A) having a carboxyl group in the structure thereof and a constituent unit corresponding to a vinyl monomer (B) represented by formula (1), a cationic surfactant, a higher alcohol and a silicone oil. CH2=C(R1)-CO-X-(Q-O)r-R2 (1) (In the formula, R1 represents a hydrogen atom or a methyl group; R2 represents a hydrogen atom or an alkyl group having 1-5 carbon atoms, both of which may have a substituent; Q represents an alkylene group having 2-4 carbon atoms which may have a substituent; r represents 2-15; and X represents an oxygen atom or NH; wherein the number of atoms that are bound linearly in the structure -(Q-O)r-R2 is 70 or less.)
A61K 8/898 - Polysiloxanes containing atoms other than silicon, carbon, oxygen and hydrogen, e.g. dimethicone copolyol phosphate containing nitrogen, e.g. amodimethicone, trimethyl silyl amodimethicone or dimethicone propyl PG-betaine
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
Provided is a method of producing succinic acid in which a microorganism having a succinic acid-producing ability is allowed to react with a sugar, the method being characterized in that the ratio of the oxygen transfer rate to the succinic acid production rate (mmol-O2/mol-SA) is 0.1 to 240 and that the doubling time of the microorganism during the reaction is not shorter than 40 hours.
This invention provides a polyolefin-based molded article containing microfibrillated plant fibers having high strength and high elastic modulus. Specifically, the present invention provides a composition comprising (1) a polymeric compound having a primary amino group, (2) a polymeric compound modified with maleic anhydride, (3) microfibrillated plant fibers, and (4) a polyolefin; and a molded article obtained by subjecting the composition to heat treatment.
C08L 1/00 - Compositions of cellulose, modified cellulose, or cellulose derivatives
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
C08L 79/00 - Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups
38.
METHOD FOR PRODUCING FIBRE-REINFORCED COMPOSITE MATERIAL, AND HEAT-RESISTANT MOLD MATERIAL AND HEAT-RESISTANT STRUCTURAL MATERIAL USING THE FIBER-REINFORCED COMPOSITE MATERIAL
A method for producing a fiber-reinforced composite material having high mechanical properties and high heat resistance, and allowing the use of a gypsum die in primary curing, wherein a fiber-reinforced prepreg, obtained by impregnating reinforcing fibers with an epoxy resin composition comprising a triphenylmethane-type epoxy resin, N,N,N',N'-tetraglycidyldiaminodiphenylmethane (B) and diaminodiphenylsulfone (C), is subjected to primary curing at 110-130°C, and then to secondary curing at a temperature which is at least as high as the primary curing temperature.
The present invention relates to a carbon fiber bundle to which an amino group-containing modified polyolefin resin has applied, wherein the amount of applying amino group-containing modified polyolefin resin is 0.2 to 5.0% by mass. This carbon fiber bundle can be produced by applying 0.2 to 5.0% by mass of the amino group-containing modified polyolefin resin to the surface of the carbon fiber bundle. The present invention can exhibit excellent interface adhesion to a polyolefin resin, particularly to a polypropylene resin, and can provide a carbon fiber bundle useful for reinforcing the polyolefin resin and a method of producing the same.
D06M 15/227 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
B29B 15/14 - Coating or impregnating of reinforcements of indefinite length of filaments or wires
C08F 8/32 - Introducing nitrogen atoms or nitrogen-containing groups by reaction with amines
D06M 15/00 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compounds; Such treatment combined with mechanical treatment
40.
ACRYLONITRILE SWOLLEN FIBER FOR CARBON FIBER, PRECURSOR FIBER BUNDLE, STABILIZED FIBER BUNDLE, CARBON FIBER BUNDLE AND PRODUCTION METHODS THEREOF
Provided is a carbon fiber bundle for obtaining a fiber-reinforced plastic having high mechanical characteristics. An acrylonitrile swollen fiber for a carbon fiber having openings of 10 nm or more in width in the circumference direction of the swollen fiber at a ratio in the range of 0.3 openings/µm2 or more and 2 openings/µm2 or less on the surface of the swollen fiber, and the swollen fiber is not treated with a finishing oil agent. A precursor fiber obtained by treating the swollen fiber with a silicone-based finishing oil agent has a silicon content of 1700 ppm or more and 5000 ppm or less, and the silicon content is 50 ppm or more and 300 ppm or less after the finishing oil agent is washed away with methyl ethyl ketone by using a Soxhlet extraction apparatus for 8 hours. The fiber is preferably an acrylonitrile copolymer containing acrylonitrile in an amount of 96.0 mass % or more and 99.7 mass % or less and an unsaturated hydrocarbon having at least one carboxyl group or ester group in an amount of 0.3 mass % or more and 4.0 mass % or less.
Provided is a carbon fiber bundle for obtaining a fiber-reinforced plastic having high mechanical characteristics. An acrylonitrile swollen fiber for a carbon fiber having openings of 10 nm or more in width in the circumference direction of the swollen fiber at a ratio in the range of 0.3 openings/µm2 or more and 2 openings/µm2 or less on the surface of the swollen fiber, and the swollen fiber is not treated with a finishing oil agent. A precursor fiber obtained by treating the swollen fiber with a silicone-based finishing oil agent has a silicon content of 1700 ppm or more and 5000 ppm or less, and the silicon content is 50 ppm or more and 300 ppm or less after the finishing oil agent is washed away with methyl ethyl ketone by using a Soxhlet extraction apparatus for 8 hours. The fiber is preferably an acrylonitrile copolymer containing acrylonitrile in an amount of 96.0 mass % or more and 99.7 mass % or less and an unsaturated hydrocarbon having at least one carboxyl group or ester group in an amount of 0.3 mass % or more and 4.0 mass % or less.
Provided is a carbon fiber bundle for obtaining a fiber-reinforced plastic having high mechanical characteristics. An acrylonitrile swollen fiber for a carbon fiber having openings of 10 nm or more in width in the circumference direction of the swollen fiber at a ratio in the range of 0.3 openings/µm2 or more and 2 openings/µm2 or less on the surface of the swollen fiber, and the swollen fiber is not treated with a finishing oil agent. A precursor fiber obtained by treating the swollen fiber with a silicone-based finishing oil agent has a silicon content of 1700 ppm or more and 5000 ppm or less, and the silicon content is 50 ppm or more and 300 ppm or less after the finishing oil agent is washed away with methyl ethyl ketone by using a Soxhlet extraction apparatus for 8 hours. The fiber is preferably an acrylonitrile copolymer containing acrylonitrile in an amount of 96.0 mass % or more and 99.7 mass % or less and an unsaturated hydrocarbon having at least one carboxyl group or ester group in an amount of 0.3 mass % or more and 4.0 mass % or less.
D01F 6/18 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
D01F 9/22 - Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles
43.
CARBON FIBER BUNDLE THAT DEVELOPS HIGH MECHANICAL PERFORMANCE
Provided is a carbon fiber bundle for obtaining a fiber-reinforced resin having high mechanical characteristics. A carbon fiber bundle formed of single carbon fibers, each of which has no uneven surface structure of 0.6 µm or more in length extending in the longitudinal direction of the single fiber; which has an uneven structure having a difference in height (Rp-v) of 5 to 25 nm between the highest portion and the lowest portion of the surface of the single fiber and having an average roughness Ra of 2 to 6 nm; and which has a ratio of the major axis to the minor axis (major axis / minor axis) of a cross-section of the single fiber of 1.00 to 1.01, wherein a mass of the single fiber per unit length falls within the range of 0.030 to 0.042 mg/m; a strand strength is 5900 MPa or more; a strand elastic modulus measured by the ASTM method is 250 to 380 GPa; and a knot tenacity is 900 N/mm2 or more.
D01F 9/22 - Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles
D01F 6/18 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
In a process of producing a conjugated diene such as butadiene by a catalytic oxidative dehydrogenation reaction of a monoolefin such as n-butene, an object of the present invention is to provide a process by which an operation can be conducted more safely and a conjugated diene can be stably produced at a higher yield. The present invention relates to a process of producing a conjugated diene including a step of mixing a raw material gas containing a monoolefin having a carbon atom number of 4 or more with a molecular oxygen-containing gas and supplying the mixture into a reactor, and a step of obtaining a corresponding conjugated diene-containing product gas produced by the oxidative dehydrogenation reaction of the monoolefin having a carbon atom number of 4 or more in the presence of a catalyst, wherein the concentration of a combustible gas in the gas supplied to the reactor is not less than the upper explosion limit and the oxygen concentration in the product gas is from 2.5 to 8.0 vol%.
C07C 5/48 - Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor with oxygen as an acceptor
B01J 37/10 - Heat treatment in the presence of water, e.g. steam
C07C 7/11 - Purification, separation or stabilisation of hydrocarbons; Use of additives by absorption, i.e. purification or separation of gaseous hydrocarbons with the aid of liquids
The object of the present invention is to provide a production method of an .alpha.-olefin low polymer, wherein a low polymer of an .alpha.-olefin is obtained in high yield. The present invention relates to that when an inert gas is allowed to exist in a gas phase part of a reactor 10 in the proportion of from 0.010 to 50.00% by volume, and an .alpha.-olefin is subjected to low polymerization reaction in a solvent in the presence of a chromium series catalyst comprising a chromium compound (a), at lest one nitrogen-containing compound (b) selected from the group consisting of an amine, an amide and an imide, and an aluminum-containing compound (c), an unreacted .alpha.-olefin and the solvent separated from a reaction liquid are circulated into the reactor 10, and where the proportion of the inert gas in the gas phase exceeds 50.00% by volume, the inert gas is discharged outside the reaction system from a gas phase part of the reactor 10 and/or a circulation piping 21 of an unreacted .alpha.-olefin.
C08F 4/69 - Chromium, molybdenum, tungsten or compounds thereof
B01J 31/34 - Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups of chromium, molybdenum or tungsten
The object of the present invention is to provide a treatment method which deactivates deposits in a reactor and the like in a production process of an .alpha.-olefin low polymer. The present invention relates to that after completion of the production of a low polymer of ethylene in a reactor 10 in the presence of a chromium series catalyst, a hydrocarbon compound solution containing an electron donative compound such as water or alcohol is supplied to the reactor 10 and a heat exchanger 16, thereby deactivating the deposits.
C07C 2/26 - Catalytic processes with hydrides or organic compounds
C07C 7/148 - Purification, separation or stabilisation of hydrocarbons; Use of additives by treatment giving rise to a chemical modification of at least one compound
The object of the present invention is to provide a production method of a polyolefin, in which catalyst activity is improved, and a polyolefin such as a linear low density polyethylene can industrially be advantageously produced. The present invention relates to a production method of a polyolefin, in which in producing a polyolefin by polymerization reaction of an olefin using a catalyst, an organohalide is present in a reaction system in an amount of from 0.05 to 10 ppm by weight in terms of a halogen atom as a concentration in a raw material polyolefin, and 1-hexene for linear low density polyethylene production raw material, containing an organohalide in an amount of from 0.05 to 10 ppm by weight in terms of a halogen atom.
It is an object of the present invention to provide a package in an optimal form obtained by winding a carbon fiber bundle having a fineness of 25,000 to 35,000 deniers, which has a high wound density and is less apt to become loose, and a method for producing the same. The present invention is a carbon fiber package obtained by winding a carbon fiber bundle having a fineness of 25,000 to 35,000 deniers on a bobbin in a square-end type, wherein the width per unit fineness of the carbon fiber bundle is in the range of 0.30x10-3 to 0.63x10-3 mm/denier, the traverse angle in the beginning of winding is in the range of 13 to 14°, the traverse angle in the end of winding is 3° or larger, and the fractional portion W0 of the winding ratio W is in the range of 0.07 to 0.08.
It is an object of the present invention to provide a package in an optimal form obtained by winding a carbon fiber bundle having a fineness of 25,000 to 35,000 deniers, which has a high wound density and is less apt to become loose, and a method for producing the same. The present invention is a carbon fiber package obtained by winding a carbon fiber bundle having a fineness of 25,000 to 35,000 deniers on a bobbin in a square-end type, wherein the width per unit fineness of the carbon fiber bundle is in the range of 0.30×10 -3 to 0.63×10 -3 mm/denier, the traverse angle in the beginning of winding is in the range of 13 to 14°, the traverse angle in the end of winding is 3° or larger, and the fractional portion WO of the winding ratio W is in the range of 0.07 to 0.08.
It is an object of the present invention to provide a heat-shrinkable multilayer film which, in the case of using the heat-shrinkable multilayer film as a heat-shrinkable label for a container, does not produce delamination in covering a container, is superior in heat resistance, oil resistance, tearing properties along the perforation and appearance and can prevent the reduction in strength between the layers after a printing step, and a heat-shrinkable label comprising the heat-shrinkable multilayer film as a base film. The present invention is a heat-shrinkable multilayer film which comprises: an outer surface layer comprising a polyester type resin; and an intermediate layer comprising a polystyrene type resin, said outer surface layer and said intermediate layer being laminated by interposing an adhesive layer comprising a polyester type elastomer or a modified polyester type elastomer.
G09F 3/04 - Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps to be fastened or secured by the material of the label itself, e.g. by thermo-adhesion
A stretched polyamide film including at least one stretched layer made of a mixed resin containing a polyamide resin and a modified polyester-based elastomer Y The polyamide resin X is mainly constituted by m-xylylenediamine unit and C6-12 .alpha.,.omega.-aliphatic dicarboxylic acid unit. The modified polyester- based elastomer is graft-modified with an ethylenically unsaturated carboxylic acid or its anhydride. Such stretched polyamide film is drastically improved in the flexibility, impact resistance and pin-hole resistance with little reduction in the gas-barrier properties while retaining an enough transparency to practical use.
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
B32B 7/10 - Interconnection of layers at least one layer having inter-reactive properties
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 77/06 - Polyamides derived from polyamines and polycarboxylic acids
To provide a process for producing styrene by dehydrogenation of ethylbenzene by means of a combination of a dehydrogenation reaction and an oxidation reaction, wherein the formation of carbon dioxide is prevented in the section from a place where the dehydrogenation reaction gas is mixed with the oxygen-containing gas to the inlet of the oxidation step, thereby to produce styrene in high yield for a long period. A process for producing styrene, which comprises the following steps (1) to (3) and which is characterized in that at the time of feeding a dehydrogenation reaction gas obtained in step (1) and mixed with an oxygen--containing gas, to step (2), the conversion of oxygen by combustion is controlled to be at most 15% in the section from the place where the dehydrogenation reaction gas is mixed with the oxygen-containing gas to the inlet of step (2). Step (1) is a dehydrogenation step of reacting a raw material gas comprising at least ethylbenzene and steam in the presence of a dehydrogenation catalyst; Step (2) is an oxidation step of subjecting the dehydrogenation reaction gas obtained in the dehydrogenation step to an oxidation reaction of at least a part of hydrogen in the presence of an oxidation catalyst and in the coexistence of an oxygen-containing gas; and Step (3) is a dehydrogenation step of reacting the oxidation reaction gas obtained in the oxidation step in the presence of a dehydrogenation catalyst.
C07C 5/48 - Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor with oxygen as an acceptor
The present invention provides to a new ethylene-vinyl alcohol copolymer which has improved stretching properties and provides a molded article having excellent gas barrier properties, appearance and strength, and a molded article thereof. The present invention is an ethylene-vinyl alcohol copolymer comprising the structural unit of formula (1) : (see formula 1) (wherein X represents any binding chain excluding an ether bond, each of R1 to R4 represents independently any substituent and n represents 0 or 1.).
B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
A pressure vessel comprising a fiber reinforced resin layer (4), which is made of a reinforced fiber (3) impregnated in resin, on a surface of a vessel body (2), wherein the pressure vessel is produced by forming the fiber reinforced resin layer (4) on the surface of the vessel body, applying an internal pressure and plastically deforming (subjecting to an autofrettage) the vessel body (2) such that a distortion of the surface of the vessel body in a circumferential direction of the vessel body be in a range of 0.7% to 0.9%, in order to apply a pre-stress to the vessel body (2) and the fiber reinforced resin layer (4), and wherein the pressure vessel has a burst pressure, which is 2.2 to 2.8 times as large as a charging pressure. Since the pressure vessel (1) has excellent fatigue property and burst property, and a reduced weight, this is preferably used as a storage vessel for high pressure gas.
HUMIDITY-DEPENDENT ANTIBACTERIAL POWDERY COMPOSITION, PROCESS FOR PRODUCING THE SAME, HUMIDITY-DEPENDENT ANTIBACTERIAL FOOD STORING ARTICLE AND METHOD OF STORING FOOD
An object of the present invention is to provide a humidity-dependent antibacterial powdery composition of excellent applicability wherein a volatile oily antibacterial substance can be contained in high ratio; a process for producing the same; a humidity-dependent antibacterial food storing article; and a method of storing food. The humidity-dependent antibacterial powdery composition of the present invention as means of attaining the object is characterized in that it comprises a volatile oily antibacterial substance and a water-soluble film forming agent and the behavior of release of the antibacterial substance is changed depending on humidity. The process for producing the same is characterized in that a water-soluble film forming agent optionally together with a powder vehicle is dissolved and/or dispersed in water, subsequently a volatile oily antibacterial substance optionally together with an emulsifying agent is added to the solution and emulsified, and thereafter the obtained emulsion is spray dried into powder. The humidity-dependent antibacterial food storing article is characterized by carrying the humidity-dependent antibacterial powdery composition. The method of storing food is characterized in that the volatile oily antibacterial substance is released from the humidity-dependent antibacterial food storing article toward food lying in an atmosphere of 70% or higher humidity.
A composite pressure container or tubular body includes a prepreg tow winding obtained by a process that includes: contacting at least one fiber with an uncured thermosettuig resin, to form a coated fiber; winding said coated fiber around an outer shell form, liner, or mandrel: and curing the resins; the uncured thermosetting resin including at least one surface active oligomer or polymer.
C08G 59/00 - Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by reaction of epoxy polycondensates with monofunctional low-molecular-weight compounds; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
C08J 5/04 - Reinforcing macromolecular compounds with loose or coherent fibrous material
C08J 5/24 - Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
F17C 1/06 - Protecting sheatings built-up from wound-on bands or filamentary material, e.g. wires
B29C 53/56 - Winding and joining, e.g. winding spirally
B29C 53/80 - Component parts, details or accessories; Auxiliary operations
57.
METHOD OF PRODUCING MOLDED ARTICLE OF FIBER-REINFORCED COMPOSITE MATERIAL AND THE MOLDED ARTICLE
The invention relates a method of stably and highly efficiently producing a three-dimensional molded article of a fiber-reinforced composite material having a three-dimensional shape, uniform quality, and free from wrinkles by press molding a plurality of prepregs cut out in a predetermined shape and also to a molded article. In the production method, at least one set of a partially separated flap (31c to 33c) and a residual portion (31d to 33d) are formed for each prepreg by forming a plurality of notches or cutouts for each cut-out prepreg (31 to 33). The respective prepregs are laminating at predetermined portions of a press die (10) using the partially separated flaps (31c to 33c) of the respective prepregs as positioning parts, and the partially separated flaps (31c to 33c) of the prepregs pressed to a three-dimensional shape. Next, end edge parts of the residual portions (31d to 33d) are laid over end edge parts of the partially separated flaps (31c to 33c) and pressed to obtain a molded article of a fiber-reinforced composite material having a desired three-dimensional shape as a whole. Employment of an epoxy resin for a matrix resin composition to be used for the prepreg further improves the production efficiency.
B29C 70/34 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression
patents
