Patent Number: 6,252,030

Title: Hydrogenated octasilsesquioxane-vinyl group-containing copolymer and method for manufacture

Abstract: A method for manufacturing an organic solvent-soluble hydrogenated octasilsesquioxane-vinyl group-containing compound copolymer comprising reacting 1 mol of (A) a hydrogenated octasilsesquioxane described by formula I ##STR1## with 0.2 to less than 3 mol of (B) a divinyl group-containing compound described by formula (2) where L is selected from the group consisting of (a) a divalent hydrocarbon group comprising 3 to 10 carbon atoms and (b) --(SiR.sub.2 O).sub.m --SiR.sub.2 --, where each R is independently selected from the group consisting of alkyls comprising 1 to 6 carbon atoms and aryls comprising 6 to 9 carbon atoms and 1.ltoreq.m.ltoreq.10; in the presence of a hydrosilylation catalyst.

Inventors: Zank; Gregg Alan (Tokyo, JP), Suto; Michitaka (Kanagawa, JP)

Assignee: Dow Corning Asia, Ltd.

International Classification: C08G 77/38 (20060101); C08G 77/04 (20060101); C08G 77/00 (20060101); C08G 077/12 (); C08G 077/20 (); C08G 077/04 ()

Expiration Date: 06/26/2018