Heat-curable silicone compositions comprising fumarate...

Details Heat-curable silicone compositions comprising fumarate... Heat-curable silicone compositions comprising fumarate...

C - Chemistry, Metallurgy

08

K

117/28, 400/5307

C08K 5/11 (2006.01) C08L 83/04 (2006.01) C09D 183/04 (2006.01) C09J 7/02 (2006.01)

Patent

CA 1308508

HEAT-CURABLE SILICONE COMPOSITIONS COMPRISING FUMARATE CURE-CONTROL ADDITIVE AND USE THEREOF ABSTRACT Compositions which cure by a platinum-catalyzed reaction between silicon-bonded hydrogen atoms and silicon- bonded, aliphatically unsaturated hydrocarbon radicals have improved pot-life and cure-rate characteristics when a catalyst-inhibiting amount of a diorgano fumarate compound is added to the composition. Solventless coating compositions containing a dialkyl fumarate, a methylhydrogenpolysiloxane and a methylpolysiloxane bearing hexenyl radicals are particularly useful as adhesive-release coatings for acrylic-based pressure sensitive adhesives, applied in-line.

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