Vulcanized rubber for heat resistant vibration-isolator

Details Vulcanized rubber for heat resistant vibration-isolator Vulcanized rubber for heat resistant vibration-isolator

C - Chemistry, Metallurgy

08

L

C08L 23/16 (2006.01) C08L 9/00 (2006.01) C08L 91/00 (2006.01)

Patent

CA 2137521

The present invention provides a vulcanized rubber for heat resistant vibration-isolator which can be obtained by vulcanizing a composition comprising: (A) 110-175 parts by weight of an oil-extended copolymer comprising 100 parts by weight of an ethylene- .alpha. -olefin-non-cojugated diene copolymer rubber with intrinsic viscosity ( ? ) of 3 dl/g or more and 10-75 parts by weight or an extender oil; (B) 5-20 parts by weight of a liquid diene polymer with melt viscosity of 100-3000 poises at 25 °C, per 100 parts by weight of an ethylene- .alpha. -olefin-non-cojugated diene copolymer rubber; and (C) 10-80 parts by weight of a reinforcing filler, per 100 parts by weight of an ethylene- .alpha. -olefin-non-cojugated diene copolymer rubber: with an organic peroxide. The vulcanized rubbers of the present invention have an excellent thermal stability and durability, a low dynamic spring constant, and an excellent processability, it is useful for heat resistant vibration-isolator rubber, and is most suitable for, for example, uses of vibration-isolator for automobiles for engine mount, strato mount, suspension bush, exhaust mount and the like, and uses of vibration- isolator for vehicles for railway, vehicles for construction, industrial instruments, and instruments for office-automation and the like.

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