Nippon Zeon Company, Ltd.

Toyoda Gosei Co., Ltd.

Kiyoshi Hosoya

Takafumi Kawanaka

Kunio Mori

Masatoshi Sugimoto

Tadaoki Okumoto

Shigelu Yagishita

There are provided an acrylic copolymer elastomer containing an acrylic acid polyalkylene glycol ester as a constituent, and a vulcanizable composition comprising said elastomer and a vulcanizing agent, which composition gives a vulcanizate excellent in cold resistance, heat resistance and oil resistance. The acrylic copolymer elastomer is obtained by copolymerizing

Acrylic copolymer elastomer and vulcanizable composition containing same

A curable acrylic rubber composition which is comprised of (A) an acrylic polymer and, as a curing agent, a combination of (B) a polymer of a dibutylaminotriazine thiol with (C) 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10 -oxide or a reaction product thereof with a carbonyl compound. This rubber composition is not scorched at room temperature, but is cured at a high rate of reaction at a rubber curing temperature.

Curable acrylic rubber containing dibutylaminotriazine thiol and

A vulcanizable epoxy group-containing elastomer composition comprising an elastomer containing epoxy groups, a polycarboxylic acid having at least 2 carboxyl groups in the molecule, and either a quaternary ammonium salt or a quaternary phosphonium salt.

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Yokohama, Japan

Kiyoshi Hosoya