Ethylene/.alpha.-olefin/diene rubber composition and use of...

Details Ethylene/.alpha.-olefin/diene rubber composition and use of... Ethylene/.alpha.-olefin/diene rubber composition and use of...

C - Chemistry, Metallurgy

08

L

400/6503

C08L 23/08 (2006.01) C08L 23/04 (2006.01) C08L 23/16 (2006.01) C08L 23/18 (2006.01) C08L 47/00 (2006.01)

Patent

CA 2075713

- 55 - ABSTRACT The ethylene/.alpha.-olefin/diene rubber composition of the present invention is a specific ethylene/.alpha.-olefin/diene rubber composition comprising a high-molecular ethylene/.alpha.- olefin/diene copolymer rubber (A) having a specific molecular weight distribution, a specific intrinsic viscosity [?] and a specific iodine value, and a low- molecular liquid ethylene/.alpha.-olefin copolymer (B) having a specific intrinsic viscosity [?]. This ethylene/.alpha.- olefin/diene rubber composition of the invention is excellent in both the processability (flowability) and the shape retention properties in the vulcanization molding process, and the rubber composition can provide a vulcanized rubber molded product which is excellent in surface smoothness, mechanical strength, low-compression permanent strain properties, resistance to abrasion and resistance to dynamic fatigue.

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