Ethylene copolymer rubber, vulcanizable rubber composition conta

Details Ethylene copolymer rubber, vulcanizable rubber composition conta Ethylene copolymer rubber, vulcanizable rubber composition conta

1996-06-17

1997-12-16

Teskin, Fred

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526127, 526132, 526160, 526170, 526282, 526283, 526943, 524554, 524579, C08F23620, C08F 464

Patent

active

056986513

ABSTRACT:
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.

REFERENCES:
patent: 5229478 (1993-07-01), Floyd et al.
patent: 5292845 (1994-03-01), Kawasaki et al.
Abstract of Japanese Laid-Open Patent Publication No. 5-262827 (Oct. 12, 1993).
Abstract of Japanese Laid-Open Patent Publication No. 63-008408 (Jan. 14, 1988).
Abstract of European Published Patent Application No. 0 485 822 (May 20, 1992).
Abstract of European Published Patent Application No. 0 320 762 (Jun. 21, 1989).
Wild, et al. "ansa-Metallocene Derivatives . . . ", J. Organometallic Chemistry, 228 (1985), pp. 63-67.
Abstract of European Published Patent Application No. 0 549 900 (Jul. 7, 1993).

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