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VINYL-CONTAINING, SILANOL-TERMINATED SILICONE COMPOSITIONS FOR TREATMENT OF FILLERS
VINYL-CONTAINING, SILANOL-TERMINATED SILICONE COMPOSITIONS FOR TREATMENT OF FILLERS
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机译:含乙烯基,硅烷醇封端的硅氧烷组合物,用于填料的处理
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摘要
Docket No.: 60SI-1384 of the Invention A composition is provided for treating silica filler in-situ, comprising a silanol-terminated, vinyl-containing polydiorganosiloxane having the general formula: wherein R is a monovalent substituted or unsubstituted hydrocarbon radical; R1 is R or a halogenated alkyl radical; R2 is R or a halogenated alkyl radical; "a" is a number in the range of from about 1 to about 30; "b" is a number in the range of from 0 to about 50; and"c" is a number in the range of from 4 to about 30; the vinyl content of the polydiorganosiloxane being in the range of from about 1 to about 20% by weight and the silanol content being in the range of from about 0.1 to about 6% by weight. Preferably, R and R1 are methyl, R2 is methyl or 3,3,3-trifluoropropyl, and b is 0. The invention is further directed to a method for treating silica filler with the treating composition above and to silicone elastomeric compositions containing filler treated with the treating composition.
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