Ethylene copolymer rubber, vulcanizable rubber composition...

Details Ethylene copolymer rubber, vulcanizable rubber composition... Ethylene copolymer rubber, vulcanizable rubber composition...

C - Chemistry, Metallurgy

08

F

C08F 210/18 (2006.01) C08F 4/76 (2006.01) C08L 23/08 (2006.01) C08L 47/00 (2006.01) C08F 4/6592 (2006.01)

Patent

CA 2179371

Disclosed is an ethylene copolymer rubber which is a random copolymer rubber of (a) ethylene, (b) an .alpha.-olefin of 3 to 20 carbon atoms, (c) a nonconjugated polyene containing, in one molecule, one carbon-to-carbon double bond polymerizable by a metallocene catalyst among carbon- to-carbon double bonds, and (d) a nonconjugated polyene containing, in one molecule, two carbon-to-carbon double bonds polymerizable by the metallocene catalyst among carbon-to-carbon double bonds. The ethylene copolymer rubber has excellent moldability, high vulcanization rate, good mechanical properties such as high vulcanization strength, excellent low-temperature flexibility and thermal aging resistance. Also disclosed is a process for preparing the ethylene copolymer rubber with high activity, high conversion ratio of .alpha.-olefin and high random copolymerizability.

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