C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 23/08 (2006.01) C08F 8/30 (2006.01) C08K 5/04 (2006.01) C08K 5/17 (2006.01) C08K 5/32 (2006.01) C08K 5/34 (2006.01) C08K 5/3462 (2006.01) C08L 23/18 (2006.01)
Patent
CA 2064422
ABSTRACT OF THE DISCLOSURE: A process for producing a rubber composition comprising the first step of heat-treating at 120°C or more a mixture comprising of 100 parts by weight of an ethylene-.alpha.-olefin copolymer rubber, 0.5-5 parts by weight of at least one dinitrodiamine and at least one radical generating agent to obtain a heat-treated mixture, the second step of adding a filler to the heat-treated mixture and kneading them to obtain a rubber mixture and the third step of compounding a crosslinking agent with the rubber mixture obtained in the second step at 100°C or less to obtain a rubber composition. According to said process, an ethylene- .alpha.-olefin copolymer rubber composition which is excel- lent in heat resistance and durability is obtained.
Aoshima Masashi
Sato Mitsuhiko
Marks & Clerk
Sumitomo Chemical Co. Ltd.
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