Thermally stable fluorinated organosiloxane gel composition

Details Thermally stable fluorinated organosiloxane gel composition Thermally stable fluorinated organosiloxane gel composition

C - Chemistry, Metallurgy

08

L

402/17

C08L 83/08 (2006.01) C08K 5/00 (2006.01) C08L 83/07 (2006.01)

Patent

CA 2011263

Polyorganosiloxane gels exhibiting a resistance to discoloration, hardening and surface deformation at temperatures of 100°C. and above can be prepared by curing compositions comprising a polydiorganosiloxane containing silicon bonded fluorinated hydrocarbon radicals and an organohydrogensiloxane containing at least three silicon-bonded hydrogen atoms per molecule in the presence of a platinum containing catalyst and up to 0.1 percent, based on the weight of said composition, of copper acetylacetonate.

Des gels de polyorganosiloxane résistant à la décoloration, au durcissement et à la déformation en surface sous une température de 100 degrés C ou plus, peuvent être préparés par réticulation de compositions renfermant un polydiorganosiloxane avec des radicaux hydrocarbonés fluorés liés à du silicium, un organohydrosiloxane contenant au moins trois atomes d'hydrogène liés au silicium, jusqu'à 0,1 % en poids (de la dite composition) d'acétylacétonate de cuivre, et en présence d'un catalyseur à base de platine.

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