Patent ID: 7060760
Filing Date: 2006-06-13
Classification: C08G,C09D,C09J

Abstract:
1. A silane-terminated polydiorganosiloxane-urethane copolymer of the formula 1, wherein R is a monovalent hydrocarbon radical optionally substituted by fluorine or chlorine and having 1 to 20 carbon atoms, X is an alkylene radical having 1 to 20 carbon atoms in which non-adjacent methylene units are optionally replaced by —O—, A is an oxygen atom or an amino group —NR′—, R′ is hydrogen or an alkyl radical having 1 to 10 carbon atoms, Y is a hydrocarbon radical optionally substituted by fluorine or chlorine and having 1 to 20 carbon atoms, D is an alkylene radical optionally substituted by fluorine, chlorine, C B is a radical of the formula 2 wherein Z is an alkylene radical having 1 to 10 carbon atoms, R R″ is a moisture-reactive radical selected from the group consisting of C W is a radical B or hydrogen, m is 0, 1 or 2, n is an integer from 1 to 2000, a is an integer of at least 1, b is 0 or an integer from 1 to 2000, c is an integer from 1 to 30, and d is 0 or 1, with the proviso that, based on the sum of urethane groups and urea groups, at least 30 mol % of urethane groups are present.