Silicone composition and a method for preparing the same

摘要

A silicone composition comprises (a) a curable silicone resin, (b) an inorganic particle having a polymeric surface coating formed thereon, and (c) a cross-linking compound. The (a) curable silicone resin comprises units having a functional group R1 selected from an aryl group, an alkyl group, an alkenyl group, and hydrogen. The polymeric surface coating comprises an organopolysiloxane. The organopolysiloxane comprises units selected from R23SiO1/2, R22SiO2/2, R2SiO3/2, and combinations thereof. R2 is selected from an aryl group, an alkyl group, an alkenyl group, hydrogen, and combinations thereof, and R1 equals R2. The (c) cross-linking compound is reactive with at least one of (a) and the polymeric surface coating.

主权项

1. A silicone composition comprising:
(a) a curable silicone resin comprising units having a functional group R1 selected from the group consisting of an aryl group, an alkyl group, an alkenyl group, and hydrogen; (b) an inorganic particle having a polymeric surface coating formed thereon, said polymeric surface coating comprising an organopolysiloxane comprising units selected from the group consisting of R23SiO1/2, R22SiO2/2, R2SiO3/2, and combinations thereof, wherein R2 is selected from the group consisting of an aryl group, an alkyl group, an alkenyl group, and hydrogen; with the proviso that R1 equals R2, such that when R1 is said aryl group, R2 is also said aryl group; when R1 is said alkyl group, R2 is also said alkyl group; when R1 is said alkenyl group, R2 is also said alkenyl group; and when R1 is hydrogen, R2 is also hydrogen; and (c) a cross-linking compound reactive with at least one of (a) said curable silicone resin and said polymeric surface coating of (b) said inorganic particle; wherein said polymeric surface coating and (a) said curable silicon resin have refractive index values within 0.03 of one another.