Patent ID: 8263226
Filing Date: 2012-09-11
Classification: C08G,C09J,Y10T

Abstract:
1. A moisture-curing hotmelt adhesive composition comprising at least one silane-functional polyurethane prepolymer of the formula (I) where R which is prepared from at least one polyol and at least one polyisocyanate and has at least n isocyanate groups, following removal of n isocyanate groups; R R X is a hydrolyzable radical selected from the group consisting of where R′ is an aryl group and, if present, R″ is an aryl group; a is a value of 0, 1or 2; n is a value of 2 or more, the prepolymer P having a molecular weight of above 2000 g/mol, being solid at room temperature, and having no further silane group; wherein the silane-functional polyurethane prepolymer of the formula (I) is obtained from the reaction of a polyurethane prepolymer P having at least n isocyanate groups with a mercaptosilane of the formula (II): where X, R