SILICON-CONTAINING CURABLE COMPOSITION AND ITS CURED PRODUCT

摘要

This invention provides a silicon-containing curable composition characterized by comprising (A) a prepolymer containing two or more Si-H groups per molecule prepared by hydrosilylating at least one compound selected from each of the following components (a) and (ß), (B) a cyclic siloxane compound containing two or more carbon-carbon double bonds, per molecule, reactive with the Si-H group, and (C) a hydrosilylation catalyst. Component (a): a cyclic siloxane compound containing two or more Si-H groups per molecule represented by formula (1): Formula (1) wherein R¹, R² and R³, which may be the same or different, each represent an alkyl group having 1 to 6 carbon atoms or a phenyl group; a is a number of 2 to 10; b is a number of 0 to 8; and a + b = 2. Component (ß): A compound containing two or more carbon-carbon double bonds, per molecule, reactive with Si-H group.