Oil-resistant rubber composition

Details Oil-resistant rubber composition Oil-resistant rubber composition

C - Chemistry, Metallurgy

08

L

400/6442

C08L 9/02 (2006.01) C08F 236/12 (2006.01) C08L 15/00 (2006.01)

Patent

CA 1194249

ABSTRACT This invention relates to an oil-resistant rubber composition compris- ing 98 to 50 parts by weight of (1) a partially hydrogenated unsaturated nitrile/ conjugated diene copolymer rubber in which at least 50% of units derived from the conjugated diene are hydrogenated, and 2 to 50 parts by weight of (2) a liquid copolymer having a number average molecular weight of 500 to 10,000 obtained by copolymerizing 10 to 80% by weight of a conjugated diene, 10 to 70% by weight of an unsaturated nitrile and 0 to 20% by weight of a vinyl monomer copolymerizable with these monomers, the total amount of the components (1) and (2) being 100 parts by weight. The composition of the invention exhibits excellent solvent crack resistance when used in contact with gasoline, gasohol or various solvents such as aromatic solvents and alcohols and is therefore particularly suitable for use in rubber component parts of automobiles such as fuel hoses.

409112

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