Patent ID: 6274639
Filing Date: 2001-08-14
Classification: C08G,C08K,C09D

Abstract:
A durable, low density, high build polyurethane coating which is capable of having a thickness greater than 0.100 inches when applied during a single application, wherein the polyurethane coating is prepared by a process which comprises:(a) mixing at least one polyol and at least one polyisocyanate so as to provide a uniform mixture in which the polyol and polyisocyanate have not substantially reacted to form a urethane and which has sufficiently low viscosity such that the mixture is capable of being sprayed,(b) introducing a catalytically effective amount of at least one polyurethane catalyst into the uniform mixture, and(c) spraying the mixture onto a substrate so as to form a durable, low density, high build polyurethane coating thereon.