Nippon Zeon Company, Ltd.

General Electric Company

Mitsuyoshi Aonuma

Koichi Nishimura

Akio Maeda

Satoru Isomura

Tatsunosuke Suzuki

Takeo Kobayashi

Haruki Kawada

Hiroyuki Watanabe

Shuichi Akita

Yoshiaki Aimura

Akio Ueda

Paul Branlard

Nagatoshi Sugi

Toshio Kase

Kohkichi Noguchi

Kozo Ikegami

Takeshi Chida

Yoshio Jyo

Tetsuo Ohyama

Meyer Soria

Kyouzi Inokuchi

Hirokatsu Seya

Hiroshi Sakakida

Shigeru Okamura

Kimiaki Sasamoto

Yoshio Wada

Yukihiko Morozumi

Tetsu Ohishi

Masahiko Muranishi

A thermoplastic elastomer composition comprising (A) a thermoplastic copolyester or copolyamide elastomer, (B) an epoxy group-containing methacrylate or acrylate copolymer rubber and (C) a carboxyl group-containing methacrylate or acrylate copolymer rubber, wherein the content of component (A) is 30-90 wt. %, the total content of components (B) and (C) is 10-70 wt. %, and components (B) and (C) are crosslinked with each other. The composition provides flexible rubber articles having enhanced modulus, heat aging resistance and compression set resistance.

Thermoplastic elastomer composition

A rubber formulation including (a) a hydrogenated nitrile rubber, (b) an organopolysiloxane, (c) a cross-linking controller selected from (i) an ester or polyester of acrylic or methacrylic acid with a polyhydric alcohol, (ii) an amide or polyamide of acrylic or methacrylic acid with a polyamine, (iii) an alkoxysilane having a C.dbd.C double bond, an amino group or a mercapto group and (iv) triallyl isocyanate, (d) an optional filler, and (e) a peroxide crosslinking agent. The rubber formulation is prepared by mixing together (a') a hydrogenated nitrile rubber composition having added therein an optional filler, (b') an organopolysiloxane composition having added therein an optional filler, and (c) the crosslinking controller, and thereafter adding (e) the peroxide crosslinking agent.

Rubber formulation and process for preparing same

A thermoplastic and elastomeric composition comprising a polyamide resin and a rubber component, wherein the rubber component is dispersed in the form of crosslinked particles in the polyamide resin.

Thermoplastic and elastomeric composition comprising a polyamide and a

Rubber composition

A novel rubbery copolymer comprising (A) 5 to 95% by weight of structural units based on 1,1-dicyano-2-vinylcyclopropane and (B) 95 to 5% by weight of structural units based on a 1,1-difluoro-2-vinylcyclopropane and having a weight average molecular weight, calculated for standard polystyrene, of 2,000 to 2,000,000 is provided by copolymerizing the 1,1-dicyano-2-vinylcyclopropane and the 1,1-difluoro-2-vinylcyclopropanes in the presence of a free radical initiator. This rubbery copolymer and its hydrogenated product give a vulcanizate having improved oil resistance, cold resistance, thermal resistance, sour gasoline resistance, alcohol-containing gasoline resistance and alcohol-containing sour gasoline resistance.

Rubbery copolymer, process for production thereof, and vulcanizable

Thermoplastic and elastomeric composition

Rubber Compositions

A rubber composition comprising 20 to 70% by weight of a first rubber component which is butyl rubber, a halogenated butyl rubber or a mixture of both as a first rubber component and 80 to 30% by weight of a second rubber component which is at least one rubber selected from chlorinated polyethylene rubber, chlorosulfonated polyethylene rubber and epichlorohydrin rubber, the first rubber component being dispersed as crosslinked rubber particles in the second rubber component.

A rubber composition comprising a rubbery copolymer containing an acenaphthylene-type monomer as a copolymer component or a mixture of it with another rubber, and compounding agents. This composition gives a rubber vulcanizate having high strength and high modulus.

High strength-high modulus rubber composition comprising a mixture of

A vulcanizate of a copolymer rubber comprising 15 to 70 mol % of an alkylene sulfide, 30 to 85 mol % of an epihalohydrin and 0 to 15 mol % of an unsaturated epoxide, said vulcanizate being used in contact with an alcohol mixed gasoline.

Rubber vulcanizate from alkylene sulfide and epihalohydrin

A process for modifying a polymer of a conjugated diene, which comprises reacting a polymer of a conjugated diene containing at least one metal selected from alkali metals and alkaline earth metals with a compound having a linkage of the following formula ##STR1## wherein X represents an oxygen or sulfur atom, in the molecule.

Process for modifying conjugated diene polymers

An elastomeric composition whose scorch is inhibited comprises [I] a halogen-containing elastomer, [II] a di- or tri-thiol-s-triazine compound and [III] at least one polycarboxylic acid compound selected from the group consisting of (A) a polycarboxylic acid having at least two carboxyl groups capable of forming an acid anhydride group in the molecule and (B) a halogen-substituted polycarboxylic acid anhydride.

Scorch-inhibited elastomeric composition

A process for the surface treatment of a rubber or synthetic resin containing ethylenic unsaturation by contacting the rubber or resin with an alkyl hypohalite and a compound containing an active hydrogen and a functional group, thereby improving or providing the rubber or resin in or with such properties as adhesion, printability, dyeability, flame retardation, self-extinction, antistatic property, weatherproofing, adsorbency, ion-exchangeability and anti-permeability.

Process for the surface treatment of unsaturated rubber

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Tokyo, Japan

Mitsuyoshi Aonuma