Abstract: Provided is a polyurethane-modified epoxy resin composition having satisfactory operability of processing, such as casting or impregnation, in a composition state. The epoxy resin composition includes, as essential components, the following components (A) to (D): (A) a low-concentration polyurethane-modified epoxy resin containing a polyurethane having an epoxy resin added to each of both terminals thereof and/or one terminal thereof; (B) a polyurethane-unmodified epoxy resin that is liquid at 30° C.; (C) a solid epoxy resin having a bisphenol structure, the resin having a glass transition temperature or a melting point of 50° C. or more; and (D) an amine-based curing agent that is dicyandiamide or a derivative thereof, wherein the epoxy resin composition includes the component (A) at from 3.0 wt % to 30.0 wt %, and the component (C) at from 0.1 wt % to 40.0 wt % with respect to the total of the components (A) to (D).

Abstract: The present invention is a carbon material for a catalyst carrier of a polymer electrolyte fuel cell, which has a three-dimensional dendritic structure, and simultaneously satisfies the following (A), (B), and (C). (A) By a laser Raman spectroscopic analysis with a wavelength of 532 nm, a standard deviation ?(R) of an intensity ratio (R value) of an intensity of a D-band (near 1360 cm?1) to an intensity of a G-band (near 1580 cm?1) measured with a beam diameter of 1 ?m at 50 measurement points is from 0.01 to 0.07. (B) A BET specific surface area SBET is from 400 to 1520 m2/g. (C) A nitrogen gas adsorption amount VN:0.4-0.8 during a relative pressure (p/p0) from 0.4 to 0.8 is from 100 to 300 cc(STP)/g. A method of producing such a carbon material for a catalyst carrier is also included.

Abstract: Provided are a phenoxy resin having excellent heat resistance, low hygroscopicity, and solvent solubility, a resin composition using the same, and a cured object obtained therefrom. The phenoxy resin is represented by Formula (1) below and has an Mw of 10,000 to 200,000: where, X represents a divalent group, and includes, essentially, a group having a cyclohexane ring structure and a group having a fluorene ring structure. Y represents a hydrogen atom or a glycidyl group. n is the number of repetitions and an average value thereof is 25 to 500.

Abstract: To provide a metal-fiber reinforced plastic composite material which exhibits favorable impregnation of a matrix resin into a reinforcing fiber substrate and favorable adhesion to metal members, and excellent mechanical properties. The metal-fiber reinforced plastic composite material is a laminate of a metal member and a fiber reinforced plastic, wherein the fiber reinforced plastic includes a reinforcing fiber substrate (A) and a thermoplastic resin composition (B), the thermoplastic resin composition (B) contains a phenoxy resin (B-1) and a polyamide resin (B-2) at a mass ratio (B-1)/(B-2) of 80/20 to 20/80, an adhesive strength of the thermoplastic resin composition (B) to a monofilament of the reinforcing fiber substrate (A) is 40 MPa or more as an interfacial shear strength at 23° C. in a microdroplet method, and an adhesive strength between the metal member and the thermoplastic resin composition (B) is 7.0 MPa or more as a tensile shear strength at 23° C.

Abstract: The present invention provides a method for producing an artificial graphite electrode that enables kneading and subsequent mixing to be carried out without having to increase an amount of binder pitch used even in the case of needle coke having a large pore volume. An artificial graphite electrode is produced by kneading binder pitch with needle coke, and performing extrusion molding and then performing baking and graphitization process on the same, wherein a process for kneading the binder pitch with needle coke includes at least two separate kneading stages, and the amount of binder pitch added and kneading time in these kneading stages satisfy a kneading index as represented by formula (1) below within a range of 0.1 to 0.7.

Abstract: Provided are: spherical crystalline silica particles which ensure higher productivity and lower production costs than conventional ones, contain plenty of quartz having high thermal conductivity, have high fluidity, high dispersibility, high filling property, and low abrasion property, and are also applicable to semiconductor field; and a method for producing the spherical crystalline silica particles. The crystalline silica particles are characterized in that with respect to the total mass of the particles, the content of a crystal phase is at least 90 mass % and the content of a quartz crystal is at least 70 mass %. In addition, at least one kind of alkali metals may be contained in an amount of 0.4-5 mass % in terms of oxides, with respect to the total mass of the particles. Furthermore, at least one kind of alkaline earth metals may be contained in an amount of 1-5 mass % in terms of oxides, with respect to the total mass of the particles.

Abstract: Provided are an epoxy resin composition, which exhibits excellent low dielectric properties, and imparts excellent copper foil peel strength and interlayer cohesive strength when used in printed circuit plate applications; and a phenolic resin or an epoxy resin, which are for forming the epoxy resin composition. The phenolic resin is represented by General Formula (1) below. In the formula, R1's each represent a hydrocarbon group having 1 to 10 carbon atoms; R2's each represent a hydrogen atom, Formula (1a), or Formula (1b), where at least one of R2's is Formula (1a) or Formula (1b); and n represents the number of repetitions of 0 to 5.

Abstract: The present invention relates to an electrode catalyst for a fuel cell that includes a carbon support (11) having pores (13) and catalyst particles containing platinum or a platinum alloy supported on the carbon support (11). The pores (13) of the carbon support (11) have a mode size of pores (13) in a range of 2.1 nm to 5.1 nm. A total pore volume of the pores (13) of the carbon support (11) is in a range of 21 cm3/g to 35 cm3/g. A distance between the catalyst particles and a surface of the carbon support (11) is in a range of 2.0 nm to 12 nm as a distance of a 50% cumulative frequency.

Abstract: Provided is a polyfunctional vinyl aromatic copolymer having reactivity and solubility that can be used for manufacturing a copolymer rubber and a copolymer rubber material having processability, strength and homogeneity obtained therefrom. The polyfunctional vinyl aromatic copolymer includes: 0.5 mol % or more and 40 mol % or less of a structural unit (a) derived from a divinyl aromatic compound and 60 mol % or more and 99.5 mol % or less of a structural unit (b) derived from a monovinyl aromatic compound, in which at least some of the structural units (a) are a crosslinked structural unit (a2) represented by the following Formula (2) and a vinyl-group-containing structural unit (a1) represented by the following Formula (1): in the formulas, R1's independently represent an aromatic hydrocarbon group having 6 to 30 carbon atoms.

Abstract: To provide a resin composition that is suitable for use as a matrix resin for a fiber-reinforced composite material, the resin composition exhibiting excellent impregnation properties into reinforcing fibers and rapid curing properties, giving a molded product having high heat resistance when cured, and exhibiting excellent productivity in a short time. A two-pack curable resin composition for a fiber-reinforced composite material, including a main agent that includes an epoxy resin (A) and an ester compound (B) represented by general formula (1) below, and a curing agent that includes an amine compound (C): (R1 and R2 each denote an alkyl group or an aryl group, and R1 and R2 may bond together to form a cyclic structure; or R1 may be an ester-containing group).

Abstract: The purpose of the present invention is to provide: silica particles of which the maximum particle diameter can be minimized and which can achieve proper fluidability that cannot be achieved by the conventional techniques; and silica spherical particles which, when used as a filler for a heat-dissipating sheet, can achieve excellent heat conductivity and flexibility. Silica spherical particles characterized in that, when particles each having a size of 5 ?m or more and imaged by an optical measurement are observed, the particle diameter of each of the particles, which is determined from the image, satisfies the following requirements. Requirements: D99?29 ?m, and 10 ?m?Dmode<D99, and D99/Dmode?1.5, and Dmode?20 ?m.

Abstract: This resin-platinum composite 100 is provided with resin particles 10 and platinum particles 20, and the platinum particles 20 are immobilized on the resin particles 10. In the resin-platinum composite 100, one portion of the platinum particles 20 may be distributed three-dimensionally on surface layer sections 60 of the resin particles 10. In this case, the one portion of the three-dimensionally distributed platinum particles 20 may be partially exposed outside the resin particles 10, and the remaining portion may be enclosed in the resin particles 10. In the platinum particles 20, enclosed particles 30 that are fully enclosed in the resin particles 10, partially exposed particles 40 each having a segment embedded inside the resin particles 10 and a segment exposed outside the resin particles 10, and surface attached particles 50 attached to the surfaces of the resin particles 10 preferably exist.

Abstract: The present invention has as its object to provide thickness 60 ?m or less ultra-thin stainless steel foil which secures high thickness precision and simultaneously secures plastic deformability and good elongation at break, that is, secures good press-formability (deep drawability). The present invention solves this problem by ultra-thin stainless steel foil which has three or more crystal grains in a thickness direction, has a recrystallization rate of 90% to 100%, and has a nitrogen concentration of a surface layer of 1.0 mass % or less. For this reason, there is provided a method of production of stainless steel foil comprising rolling stainless steel sheet, then performing final annealing and making a thickness 5 ?m to 60 ?m, wherein a rolling reduction ratio at rolling right before final annealing is 30% or more, a temperature of final annealing after rolling is 950° C. to 1050° C. in the case of austenitic stainless steel and 850° C. to 950° C.

Abstract: There is provided an organic EL element having high efficiency and high driving stability despite having a low driving voltage.

Abstract: Provided is an organic electroluminescent (organic EL) element that exhibits a high efficiency while having a low drive voltage, and that exhibits a high stability while being driven. The organic electroluminescent element contains, in a light-emitting layer formed between an anode and a cathode opposing each other, a first host selected from indolocarbazole compounds represented by general formula (1), a second host selected from carbazole compounds represented by general formula (2), and a light-emitting dopant material. Here, Ar2 and Ar3 are aromatic hydrocarbon groups, L1 is a direct bond or a phenylene group, and L2 is an o-phenylene group.

Abstract: A polyimide precursor which is characterized by: containing, as a structural unit derived from a diamine, a structural unit derived from 2,2-bis(trifluoromethyl)benzidine in an amount of 60% by mole or more with respect to all structural units derived from a diamine; and containing, as structural units derived from a tetracarboxylic dianhydride, structural units derived from one or more kinds selected from 4,4?-(2,2?-hexafluoroisopropylidene)diphthalic dianhydride and 4,4?-oxydiphthalic dianhydride in a total amount of 20% by mole or more with respect to all structural units derived from a tetracarboxylic acid dianhydride, in which a yellowness index (converted for a film thickness of 10 ?m) for a polyimide obtained by imidization is 10 or less, and a tear propagation resistance is 1.0 mN/?m or more.

Abstract: A metal mask material for OLED use reduced in amount warpage due to etching, a method for manufacturing the same, and a metal mask are provided. The metal mask material and metal mask of the present invention contain, by mass %, Ni: 35.0 to 37.0% and Co: 0.00 to 0.50%, have a balance of Fe and impurities, have thicknesses of 5.00 ?m or more and 50.00 ?m or less, and have amounts of warpage defined as maximum values in amounts of rise of four corners of a square shaped sample of the metal mask material of 100 mm sides when etching the sample from one surface until the thickness of the sample becomes ? and placing the etched sample on a surface plate of 5.0 mm or less.

Abstract: Provided are a carbon material for a catalyst carrier of a polymer electrolyte fuel cell, the carbon material being a porous carbon material and simultaneously satisfying (1) an intensity ratio (I750/Ipeak) of an intensity at 750° C. (I750) and a peak intensity in a vicinity of 690° C. (Ipeak), in a derivative thermogravimetric curve (DTG) obtained by a thermogravimetric analysis when a temperature is raised at a rate of 10° C./min under an air atmosphere, is 0.10 or less; (2) a BET specific surface area, determined by BET analysis of a nitrogen gas adsorption isotherm, is from 400 to 1,500 m2/g; (3) an integrated pore volume V2-10 of a pore diameter of from 2 to 10 nm, determined by analysis of the nitrogen gas adsorption isotherm using Dollimore-Heal method, is from 0.4 to 1.5 mL/g; and (4) a nitrogen gas adsorption amount Vmacro at a relative pressure of from 0.95 to 0.99 in the nitrogen gas adsorption isotherm is from 300 to 1,200 cc(STP)/g, as well as a method of producing the same.

Abstract: Provided is a resin composition that has satisfactory impregnability into reinforcing fibers due to low viscosity and small viscosity increase even in an impregnation process performed for a long time. The resin composition being suitable as a matrix resin for a fiber-reinforced composite material for producing a cured molded article that has toughness and fatigue resistance. The resin composition for a fiber-reinforced composite material includes an epoxy resin, an acid anhydride-based curing agent, an imidazole-based curing accelerator, a radically polymerizable monomer, and a radical polymerization initiator as essential components, has a viscosity at 25° C. that falls within a range of 50 mPa·s to 800 mPa·s as measured by an E-type viscometer, and exhibits a viscosity increase ratio of 200% or less after 8 h at 25° C., wherein 50% by mass or more of the acid anhydride-based curing agent is an alicyclic acid anhydride having no olefinic unsaturated bond.

Abstract: According to the present invention, a surface of a prepreg (104), said surface being provided with a partially fused structure (102A), and a surface of a metal member (110) are brought into contact with each other, and heat and pressure are subsequently applied thereto. After completely melting a resin containing a thermoplastic resin and adhering to the prepreg (104) so that a reinforcing fiber substrate (101) is impregnated with the molten resin, the resin is cured to obtain a matrix resin (105), thereby forming a CFRP layer (120) that serves as a fiber-reinforced resin material, and the CFRP layer is simultaneously compression-bonded to the metal member (110), so that a metal-CFRP composite body (100) in which the CFRP layer (120) and the metal member (110) are firmly bonded to each other is formed.