Patent ID: 8207241
Filing Date: 2012-06-26
Classification: B01J,B82Y,C08G,C08L

Abstract:
1. A hydrosilylatable composition comprising (A) at least one compound having at least one aliphatically unsaturated carbon-carbon bond, (B) at least one compound having at least one silicon-hydrogen bond and (D) a hydrosilylation catalyst applied to nanosize titanium dioxide to form a heterogeneous catalyst composition, wherein the hydrosilylation catalyst applied to the nanosize titanium consists of metallic platinum, and the heterogeneous catalyst composition is obtained by a process comprising the steps: a) reacting a titanium dioxide sol or nanosize titanium dioxide powder with a solution containing platinum, b) drying of the product obtained in step a), c) calcining of the product obtained in step b) and d) reducing the product obtained in step c) wherein in the titanium dioxide sol used, the mean particle size is in the range 10 nm-100 nm and the solids content is 10-30%, and wherein the mean particle size of the nanosize titanium dioxide powder is in the range of 10 nm to 100 nm.