Hydrosilylation-curable silicone composition
AssigneeDow Silicones Corporation
InventorsSun Hee Kim, Min Hee Kwon
Life of this patent
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Abstract
The present invention relates to a hydrosilylation-curable silicone composition comprising: a maleate compound, and a hydrosilylation inhibitor other than the maleate compound, wherein the content of the maleate compound is in an amount of 50 to 6,000 ppm and the content of the hydrosilylation inhibitor is in an amount of 200 to 20,000 ppm, with respect to the present composition in terms of mass units, respectively. The hydrosilylation-curable silicone composition exhibits good storage stability, and can be cured to form a cured product that suffers no surface wrinkling.
Claims5
A hydrosilylation-curable silicone composition comprising:
- (A) an organopolysiloxane having at least two alkenyl groups per molecule;
- (B) an organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule, in an amount such that 0.1 to 10.0 moles of the silicon-bonded hydrogen atoms is provided relative to 1 mole of the alkenyl groups in component (A), wherein the organohydrogenpolysiloxane comprises organohydrogenpolysiloxanes represented by the formulae HMe2SiO(Ph2SiO)ySiMe2H and (HMe2SiO1/2)c(PhSiO3/2)d,
- wherein Me and Ph represent a methyl group and a phenyl group respectively, y is an integer of from 1 to 100, c and d are positive numbers and the sum of c and d in the molecule is 1;
- (C) a hydrosilylation catalyst, in an amount sufficient to accelerate curing of the composition;
- (D) a maleate compound, in an amount of 50 to 6,000 ppm with respect to the composition in terms of mass units;
- and
- (E) a hydrosilylation inhibitor other than the maleate compound, in an amount of 200 to 20,000 ppm with respect to the composition in terms of mass units.
Dependencies are inferred from the claim text.