Abstract: A composition includes Cr in a range of 0.3% by mass or more and 0.7% by mass or less, Zr in a range of 0.025% by mass or more and 0.15% by mass or less, Sn in a range of 0.005% by mass or more and 0.04% by mass or less, and P in a range of 0.005% by mass or more and 0.03% by mass or less, in which a balance is made of Cu and inevitable impurities, and a Vickers hardness at 20° C. is 149 Hv or higher.

Abstract: A casting mold material used when casting a metal material includes, as a composition: Cr within a range of 0.3 mass % or more and 0.7 mass % or less; Zr within a range of 0.025 mass % or more and 0.15 mass % or less; Sn within a range of 0.005 mass % or more and 0.04 mass % or less; P within a range of 0.005 mass % or more and 0.03 mass % or less; and a balance consisting of Cu and inevitable impurities, in which a Zr content [Zr] (mass %) and a P content [P] (mass %) have a relationship of [Zr]/[P]?5, and a Sn content [Sn] (mass %) and a P content [P] (mass %) have a relationship of [Sn]/[P]?5.

Abstract: A casting mold material of the present invention includes, as a composition: 0.3 mass % to less than 0.5 mass % of Cr, 0.01 mass % to 0.15 mass % of Zr, and a balance consisting of Cu and inevitable impurities, and the casting mold material has acicular precipitates or plate-like precipitates containing Cr.

Abstract: A copper alloy material has a composition including: 0.3 mass % or more and less than 0.5 mass % of Cr; 0.01 mass % or more and 0.15 mass % or less of Zr; and a Cu balance including inevitable impurities, wherein an average of crystal grain sizes is in a range of 0.1 mm or more and 2.0 mm or less, and a standard deviation of the crystal grain sizes is 0.6 or less.

Abstract: A casting mold material used in casting a metal material has a composition including 0.3 mass % or more and less than 0.5 mass % of Cr, 0.01 mass % or more and 0.15 mass % or less of Zr, 0.1 mass % or more and less than 2.0 mass % of Al; and a Cu balance including inevitable impurities and has precipitates in a needle shape or precipitates in a plate shape.

Abstract: A copper alloy material has a composition including: 0.1 mass % or more and 1.5 mass % or less of Cr; 0.05 mass % or more and 0.25 mass % or less of Zr; 0.005 mass % or more and 0.10 mass % or less of P; and a Cu balance including inevitable impurities. The copper alloy material includes a Cr—Zr—P compound containing Cr, Zr and P and an area ratio of the Cr—Zr—P compound is in a range of 0.5% or more and 5.0% or less in a structure observation, and the Cr—Zr—P compound is in a form of a needle shape or a granular shape and a length a longest side of the needle shape or the granular shape is 100 ?m or less.

Abstract: A casting mold material of the present invention includes, as a composition: 0.3 mass % to less than 0.5 mass % of Cr, 0.01 mass % to 0.15 mass % of Zr, and a balance consisting of Cu and inevitable impurities, and the casting mold material has acicular precipitates or plate-like precipitates containing Cr.

Abstract: A lithium ion conductive material that excels in mechanical strength, exhibiting high ion conductivity; a bacterial cellulose composite material having an inorganic material and/or organic material incorporated therein; and a bacterial cellulose aerogel. The water of bacterial cellulose hydrogel is replaced by a nonaqueous solvent containing a lithium compound. Bacterial cellulose producing bacteria are grown in a culture medium having an inorganic material and/or organic material added thereto. The bacterial cellulose hydrogel is dehydrated and dried.

Abstract: The invention relates to a porous nano material polymer composite. The porous nano material polymer composite according to the invention is prepared by impregnating monomer in the nanometer order holes of a nano material by supercritical carbon dioxide fluid, and by polymerizing the monomer in situ. Therefore, the polymer composite has a network structure in which polymer penetrates into nano pores.

Abstract: There is provided a method of removing acids from the surface and interior of an acetate film produced by deterioration during storage. Such methods are characterized by extracting and removing the acids from the surface and interior of the acetate film, and the extraction treatment includes solvent extraction or evacuation (heating). This method suppresses the deterioration process in the storage of the acetate film.

Abstract: An ethylene-vinyl alcohol copolymer, represented by the formula (1): wherein n represents a number in the range of 15 to 15,000, and a method of producing an ethylene-vinyl alcohol copolymer wherein an 1,4 -polybutadiene is hydroborated in non-gel state in a solvent, followed by oxidation to be hydroxylated so as to derive an ethylene-vinyl alcohol copolymer represented by the formula (1): wherein n represents a number in the range of 15 to 15,000.

Abstract: There is provided a method of removing acids from the surface and interior of an acetate film produced by deterioration during storage. Such methods are characterized by extracting and removing the acids from the surface and interior of the acetate film, and the extraction treatment includes solvent extraction or evacuation (heating). This method suppresses the deterioration process in the storage of the acetate film.

Abstract: A resin composition to be used as a material for a various part of an automotive vehicle. The resin composition comprises a copolymer (A) formed by copolymerization of a first unsaturated monomer (a) and a second mononer (b). The first unsaturated monomer has a functional group which is bondable by hydrogen bond to a hydroxyl group. The second monomer is copolymerizable with the first unsaturated monomer. A metal oxide (B) is dispersed in the copolymer and having hydroxyl groups and hydrophobic groups at surface of the metal oxide.

Abstract: A resin composition of the present invention comprises a polymer having functional groups and a metal oxide surface modified to form functional groups at a surface of the metal oxide and dispersed uniformly in the polymer. The functional groups of the polymer and the functional groups of the metal oxide are ionically bondable to the metal oxide and the polymer, respectively, so that the polymer and the metal oxide are bonded by ionic bonds to each other.

Abstract: According to the present invention, an ethylene-vinyl alcohol copolymer having a novel structure, and a method of producing the same are provided.

Abstract: A resin composition of the present invention comprises a polymer having functional groups and a metal oxide surface modified to form functional groups at a surface of the metal oxide and dispersed uniformly in the polymer. The functional groups of the polymer and the functional groups of the metal oxide are ionically bondable to the metal oxide and the polymer, respectively, so that the polymer and the metal oxide are bonded by ionic bonds to each other.

Abstract: For producing a modified silica composition, finely particulate silica with silanol groups is used. The finely particulate silica is so modified as to have a modification factor of 0.45 to 8 as expressed by the product (A×B) of the hydrophobic ratio (A) of its silanol groups and the total carbon number (B) of alkyl groups. It makes with a matrix resin a transparent resin composition of high transparency and rigidity which can make a thermoplastic resin laminate having an excellent appearance and suitable for application to a part for the exterior decoration of a vehicle.

Abstract: A resin composition to be used as a material of a part of an automotive vehicle. The resin composition comprises a matrix resin. Linkages of inorganic fine particles are uniformly dispersed in the matrix resin. Each linkage has hydroxyl groups and hydrophobic groups which are introduced by a hydrophobicity-providing treatment. The linkages take at least one of a chain-like form and a net-like form.

Abstract: A resin composition to be used as a material for a various part of an automotive vehicle. The resin composition comprises a copolymer (A) formed by copolymerization of a first unsaturated monomer (a) and a second mononer (b). The first unsaturated monomer has a functional group which is bondable by hydrogen bond to a hydroxyl group. The second monomer is copolymerizable with the first unsaturated monomer. A metal oxide (B) is dispersed in the copolymer and having hydroxyl groups and hydrophobic groups at surface of the metal oxide.

Abstract: Heavy oil or crude oil spills in sea water are recovered without polluting environment. A natural rubber latex and a coagulant are scattered around lumps of oil spills to coagulate the latex with the coagulant, so that a membrane of the latex is formed around the oil lumps.