Japan Synthetic Rubber Co., Ltd.

Toshiba Silicone Co., Ltd.

Yoshiaki Zama

Yasuhiko Takemura

Junichiro Watanabe

Kiyoshi Takeda

Itsuki Umeda

Hiroji Enyo

Shinichiro Zen

Masaaki Takashima

Yuichi Funabashi

Makoto Matsumoto

Yuichi Funahashi

Seizo Katayama

Hirofumi Yoshida

Hiromichi Yoshida

A silicone-based composite rubber composition having good processability on rolls which is obtained by compounding a rubber-forming polymer (A) comprising a polyorganosiloxane and an organic rubber, a silicon compound (B) having at least two hydrolyzable groups per molecule which are able to undergo hydrolysis and condensation reactions with silanols, and a heavy metal compound, amine, or quaternary ammonium salt (C) which catalyzes the hydrolysis and condensation reactions, and allowing the resulting formulation to undergo hydrolysis and condensation reactions while the formulation is kept being deformed by shearing; a crosslinkable, silicone-based composite rubber composition comprising the silicone-based composite rubber composition having blended therewith an organic rubber-crosslinking agent; and an oil seal and a rubber hose both obtained from the crosslinkable, silicone-based composite rubber composition.

Silicone-based composite rubber composition and uses thereof

A rubber composition obtained by compounding (B) from 0.005 to 50 parts by weight of an polyorganohydrogensiloxane and (C) from 0.00001 to 1 part by weight of a compound of a transition metal belonging to the group VIII with (A) 100 parts by weight of a rubber-forming polymer mainly comprising (I) from 3 to 70% by weight of a polyorganosiloxane represented by the formula: ##EQU1## wherein R represents a substituted or unsubstituted monovalent organic group, 0.02 to 10 mole % of which being a vinyl group; and a represents a number of from 1.900 to 2.004,

Rubber composition, and oil seal and rubber hose obtained therefrom

A vulcanizable rubber composition comprising (1) 100 parts by weight of a polymer composition comprising

Novel vulcanizable rubber compositions and applications thereof

A rubber composition that is prepared by reacting an organic peroxide, under shear deformation, with 3-70 parts by weight of silicone rubber (I), 30-97 parts by weight of a saturated elastomer (II) that substantially fails to be crosslinked with an organic peroxide when it is used alone, and 0-20 parts by weight of another elastomer (III) that is co-crosslinkable with component (I) in the presence of an organic peroxide and which is also co-crosslinkable or highly miscible with component (II) [where (I)+(II)+(III)=100 parts by weight].

Rubber composition and vulcanized rubber product

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Tokyo, Japan

Yoshiaki Zama