Heat cured elastomer compositions based on a vinyl...

Details Heat cured elastomer compositions based on a vinyl... Heat cured elastomer compositions based on a vinyl...

C - Chemistry, Metallurgy

08

L

C08L 43/04 (2006.01) F16J 9/28 (2006.01) F16J 15/10 (2006.01)

Patent

CA 2087777

PATENTS 60SI-1489 ABSTRACT OF THE DISCLOSURE Heat curable elastomeric silicone rubber compositions are produced which, upon heat-curing, exhibit a tear strength of greater than 200, a compression set of less than 20%, good tensile strength, and good heat-age and oil resistance properties. A vinyl-on-chain siloxane gum is added to a blend comprising 1) a vinyl-stopped organo- polysiloxane gum, 2) a silica filler, 3) an MQ or M-D vinyl-Q resin, or blends thereof, and 4) a cross- linking agent to produce a silicone elastomer which is heat curable in the presence of a peroxide catalyst.

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