Abstract: Flaky alumina particles including mullite in a surface layer of the flaky alumina particles. A method for producing flaky alumina particles including forming a mixture by mixing together an aluminum compound that contains elemental aluminum, a molybdenum compound that contains elemental molybdenum, and silicon or a silicon compound that contains elemental silicon, the aluminum compound being in an amount greater than or equal to 50 mass %, calculated as Al2O3, the molybdenum compound being in an amount less than or equal to 40 mass %, calculated as MoO3, the silicon or the silicon compound being in an amount of 0.5 mass % or greater and less than 10 mass %, calculated as SiO2, relative to a total mass of the flaky alumina particles taken as 100 mass %; and firing the mixture.

Abstract: Zinc oxide particles having a polyhedron shape, wherein the crystallite diameter of the [100] plane of the zinc oxide particles is 200 nm or greater. A method for producing the zinc oxide particles, the method including firing a zinc compound in the presence of a molybdenum compound. A resin composition containing the zinc oxide particles and a resin.

Abstract: Provided is a resin composition for molding containing a polyarylene sulfide resin that forms a molded body having all of mechanical strength, heat cycle characteristics, and thermal conductivity in a well-balanced manner. Specifically, provided are a resin composition for molding containing a plate-like filler having an aspect ratio of 10 to 500 (A), a polyarylene sulfide resin (B), a thermoplastic resin having a glass transition temperature (Tg) of 20° C. or lower (C), and glass fibers (D) as essential components, the plate-like filler (A) being contained in an amount of 30 to 70 parts by mass relative to 100 parts by mass of the sum of the plate-like filler (A), the polyarylene sulfide resin (B), the thermoplastic resin (C), and the glass fibers (D), and a molded body of the resin composition for molding.

Abstract: The present invention provides alumina particles having a fixed card-house structure formed of three or more flat plate-like alumina particles and having an average particle diameter of 3 to 1000 ?m. Also, there is provided alumina particles having an average particle diameter of 3 to 1000 ?m and having a fixed card-house structure in which the three or more flat plate-like alumina are aggregated to be crossed each other at two or more plurality of positions, and the plane directions of the flat plates crossed each other are in a state of disordered arrangement.

Abstract: Provided is a surface-treated spinel particle (B) including a spinel particle (A) including a magnesium atom, an aluminum atom, and an oxygen atom and a surface treatment layer disposed at least a portion of the surface of the spinel particle (A). The surface treatment layer includes a surface-treating agent including an organic compound or a cured product of the surface-treating agent. The spinel particle (A) further includes molybdenum. The crystallite diameter of the [111] plane of the spinel particle (A) is 220 nm or more. Also provided are a method for producing the surface-treated spinel particle (B), a resin composition including the surface-treated spinel particle (B), and a molded article.

Abstract: Provided is a surface-treated spinel particle (B) including a spinel particle (A) including a magnesium atom, an aluminum atom, and an oxygen atom and a surface treatment layer disposed at least a portion of the surface of the spinel particle (A). The surface treatment layer includes a surface-treating agent including an organic compound or a cured product of the surface-treating agent. The spinel particle (A) further includes molybdenum. The crystallite diameter of the [111] plane of the spinel particle (A) is 220 nm or more. Also provided are a method for producing the surface-treated spinel particle (B), a resin composition including the surface-treated spinel particle (B), and a molded article.

Abstract: Flaky alumina particles including mullite in a surface layer of the flaky alumina particles. A method for producing flaky alumina particles including forming a mixture by mixing together an aluminum compound that contains elemental aluminum, a molybdenum compound that contains elemental molybdenum, and silicon or a silicon compound that contains elemental silicon, the aluminum compound being in an amount greater than or equal to 50 mass %, calculated as Al2O3, the molybdenum compound being in an amount less than or equal to 40 mass %, calculated as MoO3, the silicon or the silicon compound being in an amount of 0.5 mass % or greater and less than 10 mass %, calculated as SiO2, relative to a total mass of the flaky alumina particles taken as 100 mass %; and firing the mixture.

Abstract: The present invention provides alumina particles having a fixed card-house structure formed of three or more flat plate-like alumina particles and having an average particle diameter of 3 to 1000 ?m. Also, there is provided alumina particles having an average particle diameter of 3 to 1000 ?m and having a fixed card-house structure in which the three or more flat plate-like alumina are aggregated to be crossed each other at two or more plurality of positions, and the plane directions of the flat plates crossed each other are in a state of disordered arrangement.

Abstract: There is provided an inorganic fine particle composite body (M) in which a composite resin (A), in which a polysiloxane segment (a1) having a specific structure and a vinyl-based polymer segment (a2) are bonded to each other, and inorganic fine particles (m) are bonded to each other at the polysiloxane segment (a1) through a siloxane bond. There are provided a composition and a hard coat material, containing the inorganic fine particle composite body (M). In addition, there is provided a cured product obtained by curing the composition containing the inorganic fine particle composite body (M) and a laminate containing the cured product.

Abstract: Provided is a shaped article having surface irregularities, including a fine structure including projections and a recess formed between the projections, the fine structure formed by curing a curable resin composition, wherein the curable resin composition contains a composite resin (A) in which a polysiloxane segment (a1) having a structural unit represented by a general formula (1) and/or a general formula (2) and a silanol group and/or a hydrolyzable silyl group is bonded to a vinyl-based polymer segment (a2) having an alcoholic hydroxy group through a bond represented by a general formula (3), and polyisocyanate (B); a content of the polysiloxane segment (a1) with respect to total solids weight of the curable resin composition is 10% to 60% by weight; and a content of the polyisocyanate (B) with respect to total solids weight of the curable resin composition is 5% to 50% by weight.

Abstract: There is provided a sealing material including a composite resin (A) including a polysiloxane segment (a1) having a structural unit represented by general formula (1) and/or general formula (2) and a silanol group and/or a hydrolyzable silyl group and a vinyl-based polymer segment (a2) having an alcoholic hydroxyl group, the vinyl-based polymer segment (a2) being bonded to the polysiloxane segment (a1) through a bond represented by general formula (3), and a polyisocyanate (B), wherein the content of the polysiloxane segment (a1) is 10% to 50% by weight relative to the total solid content of a curable resin composition, and the content of the polyisocyanate (B) is 5% to 50% by weight relative to the total solid content of the curable resin composition. There are also provided a solar cell module and a light-emitting diode that each use the sealing material.

Abstract: The present invention provides a separator for a fuel cell comprising a resin and a conductive material as constituting components, and sulfonic acid groups imparted to at least one portion at the surface of gas channels by a treatment using a sulfuric acid-containing gas, wherein the resin and the sulfonic acid groups, which are on the surface of the gas channels, are bonded, and a ratio of sulfur atoms in the sulfonic acid groups at the surface of the gas channels as determined by energy-dispersive X-ray spectroscopy is in a range from 0.1 to 4.0 at %, and a method for producing the separator. The separator for a fuel cell of the present invention is excellent in the wettability to water, since sulfonic acid groups are imparted to the resin at the surface of gas channels in the sulfuric acid-containing gas.

Abstract: The present invention provides a separator for a fuel cell comprising a resin and a conductive material as constituting components, and sulfonic acid groups imparted to at least one portion at the surface of gas channels by a treatment using a sulfuric acid-containing gas, wherein the resin and the sulfonic acid groups, which are on the surface of the gas channels, are bonded, and a ratio of sulfur atoms in the sulfonic acid groups at the surface of the gas channels as determined by energy-dispersive X-ray spectroscopy is in a range from 0.1 to 4.0 at %, and a method for producing the separator. The separator for a fuel cell of the present invention is excellent in the wettability to water, since sulfonic acid groups are imparted to the resin at the surface of gas channels in the sulfuric acid-containing gas.

Abstract: The present invention provides a method of producing a fuel cell separator in which at least a portion of a premolded article composed of a thermosetting resin and a carbon material, or a thermoplastic resin and a carbon material is provided with hydrophilicity, including the steps of: (1) treating the premolded article for enhancing affinity with a solution of a radically polymerizable monomer having a hydrophilic group and/or a functional group which can be converted into a hydrophilic group; (2) coating the solution of the radically polymerizable monomer having a hydrophilic group and/or a functional group which can be converted into a hydrophilic group, on the treated surface; (3) irradiating the treated surface with ionizing radiation; and (4) cleaning the fuel cell separator obtained through steps 1 to 3; wherein steps 1 to 4 are sequentially carried out, or step 1, step 3, step 2, and step 4 are sequentially carried out.

Abstract: A technique which allows an unskilled person to simply adjust a tappet clearance in an engine valve sometimes has a problem in that it can inaccurately adjust clearance because the abutment seat of a magnescale for detecting displacement is not a rocker arm itself and because the abutment position is deviated from the axis of an adjusting screw, due to which readjustment is required. In a method of adjusting and confirming a tappet clearance between an adjusting screw in a rocker arm and a valve stem, the adjusting screw is driven until the face portion of the valve stem is separate from a valve seat, thereafter the adjusting screw is loosened to retract the valve stem while measuring torque, an adjusting origin is determined from the measured torque, and the adjusting screw is loosened by an amount corresponding to a clearance setting specified value from the determined adjusting origin. After that the clearance setting specified value is confirmed with a displacement gauge.

Abstract: A technique which allows an unskilled person to simply adjust a tappet clearance in an engine valve sometimes has a problem in that it can inaccurately adjust clearance because the abutment seat of a magnescale for detecting displacement is not a rocker arm itself and because the abutment position is deviated from the axis of an adjusting screw, due to which readjustment is required. In a method of adjusting and confirming a tappet clearance between an adjusting screw in a rocker arm and a valve stem, the adjusting screw is driven until the face portion of the valve stem is separate from a valve seat, thereafter the adjusting screw is loosened to retract the valve stem while measuring torque, an adjusting origin is determined from the measured torque, and the adjusting screw is loosened by an amount corresponding to a clearance setting specified value from the determined adjusting origin. After that the clearance setting specified value is confirmed with a displacement gauge.

Abstract: A polyester resin particle dispersion material, in which the average particle size can be easily controlled within a broad range and is less likely to form irregular particles, and which is also suited for use in adhesives, is produced by dispersing a resin melt containing, as an essential component, a polyester resin (A) having a terminal structure in which an alkyl group having 4 to 20 carbon atoms or an alkenyl group having 4 to 20 carbon atoms is bonded to a carbon atom to which a carboxyl group is attached, or a carbon atom adjacent to this carbon atom, a portion or all of carboxyl groups in the polyester resin (A) being neutralized with a basic compound, in a heated aqueous medium in a melted state, and cooling the dispersed resin melt.

Abstract: A polyester resin particle dispersion material, in which the average particle size can be easily controlled within a broad range and is less likely to form irregular particles, and which is also suited for use in adhesives, is produced by dispersing a resin melt containing, as an essential component, a polyester resin (A) having a terminal structure in which an alkyl group having 4 to 20 carbon atoms or an alkenyl group having 4 to 20 carbon atoms is bonded to a carbon atom to which a carboxyl group is attached, or a carbon atom adjacent to this carbon atom, a portion or all of carboxyl groups in the polyester resin (A) being neutralized with a basic compound, in a heated aqueous medium in a melted state, and cooling the dispersed resin melt.