Blends of diene rubber with thermoplastic copolymer modified...

Details Blends of diene rubber with thermoplastic copolymer modified... Blends of diene rubber with thermoplastic copolymer modified...

C - Chemistry, Metallurgy

08

L

C08L 9/00 (2006.01) C08L 9/02 (2006.01) C08L 9/06 (2006.01)

Patent

CA 2538475

A vulcanizable rubber composition comprising: (A) a diene-containing rubber; (B) a nitrile rubber modified-thermoplastic copolymer of an olefinically unsaturated nitrile and an ester of an olefinically unsaturated carboxylic acid; and (C) a vulcanizing system, wherein the amount of (B) is in the range from 3 to 100, preferably from 5 to 75, and more preferably from 15 to 50, parts solid weight per 100 parts solid weight of (A). The composition retains the desirable low temperature performance of the diene-containing rubber, but has better processability (as measured by mill release, die swell, green strength, etc.) than the diene-containining rubber, as well as improved resistance to attack by organic chemicals, and improved permeation resistance to organic fumes and fluids.

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