Abstract: An object of the present invention is to provide a composition useful for forming an electroconductive resin, the composition comprising a resin and a vapor-growth carbon fiber compounded with the resin, and which can be easily formed into a thin film, and to provide an electroconductive resin which is made from the composition and has various functions such as electromagnetic shielding, electric-filed shielding, electrostatic elimination, and so forth. A polar organic solvent of a film-forming component and a polar organic solvent of a vapor-growth carbon fiber are previously stirred to dissolve and disperse uniformly. The both solutions are mixed and then stirred to provide composition useful for forming electroconductive resin (solution). And the composition useful for forming electroconductive resin is solidified by reaction.

Abstract: Moldings of fluoro rubbers produced by crosslinking a tetrafluoroethylene/propylene copolymer or a tetrafluoroethylene/propylene/vinylidene fluoride copolymer, which have metal contents of 1.5% by mass or below in terms of metal elements and are suitable for use applications necessitating clean environment, for example, manufacturing or carrier equipment for semiconductors, manufacturing equipment, carriers, or storage containers for food, or medical supplies.

Abstract: Moldings of fluoro rubbers produced by crosslinking a tetrafluoroethylene/propylene copolymer or a tetrafluoroethylene/propylene/vinylidene fluoride copolymer, which have metal contents of 1.5% by mass or below in terms of metal elements and are suitable for use applications necessitating clean environment, for example, manufacturing or carrier equipment for semiconductors, manufacturing equipment, carriers, or storage containers for food, or medical supplies.

Abstract: An object of the present invention is to provide a composition useful for forming an electroconductive resin, the composition comprising a resin and a vapor-growth carbon fiber compounded with the resin, and which can be easily formed into a thin film, and to provide an electroconductive resin which is made from the composition and has various functions such as electromagnetic shielding, electric-filed shielding, electrostatic elimination, and so forth.

Abstract: The present invention provides a thermally expandable material expandable from a compressed state by heat, which comprises a form material comprising a crosslinked rubber having impregnated with a crystalline thermoplastic resin and which is compressed. Also disclosed are a joint material and a soundproof cover for an automobile engine, each comprising the thermally expandable material.

Abstract: The invention provides a thermally expandable material comprising a foam composition containing: 100 parts by weight of (a) a crosslinkable polymer material; and 5 to 300 parts by weight of (b) a crystalline thermoplastic resin having oxygen in its molecule. The invention also provides a foam composition for obtaining a thermally expandable material that is expandable by heat from a compressed state, the composition comprising a crystalline thermoplastic resin formed in a predetermined shape and crosslinked.

Abstract: An oil-resistant rubber composition comprising 98 to 50 parts by weight of (1) a partially hydrogenated unsaturated nitrile/conjugated diene copolymer rubber in which at least 50% of units derived from the conjugated diene are hydrogenated, and 2 to 50 parts by weight of (2) a liquid copolymer having a number average molecular weight of 500 to 10,000 obtained by copolymerizing 10 to 80% by weight of a conjugated diene, 10 to 70% by weight of an unsaturated nitrile and 0 to 20% by weight of a vinyl monomer copolymerizable with these monomers, the total amount of the components (1) and (2) being 100 parts by weight.

Abstract: A rubber composition co-vulcanizable with a sulfur cure system, said composition comprising(1) 95 to 20% by weight of a partially hydrogenated unsaturated nitrile-conjugated diene copolymer rubber in which at least 50% of units derived from the conjugated diene are hydrogenated,(2) 5 to 80% by weight of an ethylenepropylene-nonconjugated diene terpolymer rubber, and(3) a required amount of at least one vulcanization accelerator selected from the group of thiuram accelerators and dithiocarbamate accelerators.

Abstract: A rubber composition comprising (1) a partially hydrogenated copolymer rubber composed of 10 to 50% by weight of an acrylonitrile unit, 25 to 88% by weight of a hydrogenated conjugated diene unit and 2 to 25% by weight of a conjugated diene unit, and (2) a sulfur vulcanizer system. The composition can give vulcanizates having improved ozone cracking resistance and oil resistance.

Abstract: An oil-resistant rubber composition comprising a mixture of (1) a partially hydrogenated elastomer from an unsaturated nitrile monomer and a conjugated diene monomer wherein the degree of hydrogenation of the conjugated diene units is 50 to 98 mole %, and (2) a vinyl chloride resin.

Abstract: A vulcanizable rubber composition composed of 100 parts by weight of a terpolymer rubber (A) composed of 35 to 80 mole % of epichlorohydrin, 15 to 50 mole % of ethylene oxide and 5 to 15 mole % of an unsaturated epoxide, 0.2 to 10 parts by weight of a non-sulfur vulcanizing agent, and 0 to 10 parts by weight of a vulcanization aid. A vulcanized rubber prepared from this composition has superior sour gasoline resistance (softening resistance and resistance to embrittlement) and cold resistance. A rubber mixture (B) of an epichlorohydrin-ethylene oxide copolymer rubber and an epichlorohydrin-unsaturated epoxide copolymer rubber containing 35 to 80 mole % of epichlorohydrin, 15 to 50 mole % of ethylene oxide and 5 to 15 mole % of an unsaturated epoxide may be substituted for the terpolymer rubber (A).

Abstract: A vulcanizable rubber composition composed of 100 parts by weight of a terpolymer rubber (A) composed of 35 to 80 mole % of epichlorohydrin, 15 to 50 mole % of ethylene oxide and 5 to 15 mole % of an unsaturated epoxide, 0.2 to 10 parts by weight of a non-sulfur vulcanizing agent, and 0 to 10 parts by weight of a vulcanization aid. A vulcanized rubber prepared from this composition has superior sour gasoline resistance (softening resistance and resistance to embrittlement) and cold resistance. A rubber mixture (B) of an epichlorohydrin-ethylene oxide copolymer rubber and an epichlorohydrin-unsaturated epoxide copolymer rubber containing 35 to 80 mole % of epichlorohydrin, 15 to 50 mole % of ethylene oxide and 5 to 15 mole % of an unsaturated epoxide may be substituted for the terpolymer rubber (A).

Abstract: A rubber composition for use as a cover of rubber pipes or hoses, comprising a terpolymer rubber composed of 35 to 80 mole% of epichlorohydrin, 15 to 50 mole% of ethylene oxide and 5 to 15 mole% of an unsaturated epoxide, and a di- or tri-mercapto-s-triazine as a vulcanization agent.