| 摘要 |
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 [ eta ] and a specific iodine value, and a low-molecular liquid ethylene/ alpha -olefin copolymer (B) having a specific intrinsic viscosity [ eta ]. 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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