Modified silicone elastomers having improved flex life and...

Details Modified silicone elastomers having improved flex life and... Modified silicone elastomers having improved flex life and...

C - Chemistry, Metallurgy

08

L

18/1211, 400/535

C08L 83/06 (2006.01) C08L 83/04 (2006.01) C08L 83/10 (2006.01)

Patent

CA 1248667

MODIFIED SILICONE ELASTOMERS HAVING IMPROVED FLEX LIFE AND METHOD THEREFOR ABSTRACT OF THE DISCLOSURE A silicone elastomer having improved flex life and a method of improving the flex life of silicone elastomers having olefinic unsaturation is described. The flex life of silicone elastomers having olefinic unsaturation is improved substantially by mixing vinyl acetate ethylene copolymer with the silicone elastomer in the presence of a free radical catalyst at an elevated temperature. In a preferred embodiment, methyl vinyl silicone rubber is mixed with vinyl acetate copolymer in the presence of dicumyl peroxide at an elevated temperature to provide a silicone elastomer having improved flex life.

462523

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