Polyurethane coating composition, which is based on long, aliphatic chains polyols containing polyester polyols

摘要

A coating composition is disclosed comprising:P P(a) an aqueous medium,PP(b) an water-dispersible polyurethane resin that is the reaction product of a mixture comprising:P P(1) a hydroxy-functional polyester component that is the reaction product of a mixture comprising a carboxylic acid component comprising at least two carboxylic acid functional groups, a long-chain aliphatic polyol having 18 to 60 carbon atoms, and a short-chain polyol having 12 or fewer carbon atoms,P P(2) a multifunctional compound having at least one active hydrogen group and at least one water- stabilizing group,P P(3) an active hydrogen-containing capping or chain extending agent, andPP(4) a polyisocyanate, andPP(c) an aminoplast crosslinking agent.