Jsr Corporation

Junji Ayukawa

Minoru Tanaka

Fumio Tsutsumi

Toshiyuki Hayakawa

Shoei Tsuji

The invention provides a flame-retardant rubber composition which may form a vulcanizate of an elastomer whose deterioration of mechanical strength is little to enjoy excellent mechanical properties, even when a nonhalogenated flame retardant is contained in a high proportion in the composition, and a flame-retardant elastomer obtained therefrom. The flame-retardant rubber composition contains (A) an olefin copolymer having a functional group, which comprises (a-1) a structural unit derived from ethylene, (a-2) a structural unit derived from an &agr;-olefin compound having 3 to 10 carbon atoms, (a-3) a structural unit derived from a functional group-containing unsaturated compound, and optionally (a-4) a structural unit derived from a nonconjugated diene compound, and has an intrinsic viscosity &lsqb;&eegr;&rsqb; of 0.1 to 10 dL/g as measured in decalin at 135&deg; C., (B) a vulcanizing agent and/or a crosslinking agent and (C) a nonhalogenated flame retardant. The flame-retardant elastomer is obtained by subjecting the flame-retardant rubber composition to a vulcanizing treatment.

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Tokyo, Japan

Junji Ayukawa