Patent ID: 8822622
Filing Date: 2014-09-02
Classification: C08G,C09D

Abstract:
1. Two-component coating composition, comprising A) at least one hydroxyl-functional binder, B) at least one polyisocyanate curing agent with free isocyanate groups, C) at least one thermally latent tetrahydrocarbyl tin catalyst of general formula (I) wherein R is an alkyl or cycloalkyl group, R′ is an aryl, arylalkyl or alkenyl group and n is 1, 2 or 3, and D) optionally at least one acid-functional compound, that is different from component A), with the proviso, that a composition consisting of the at least one binder A) and optionally of the at least one acid-functional compound D) has an acid number of at least 5 mg KOH/g solids, and wherein the coating composition is free of sensitizers and photoinitiators.