Patent ID: 6300457
Filing Date: 2001-10-09
Classification: C08F,C08G,C09D

Abstract:
A polyester/polyurethane coating composition containing essentially no volatile organic components, the composition comprising:(a) at least one polyester prepolymer which comprises the reaction product of(i) at least one substituted vinyl dioxolane monomer having the formula ##STR10##wherein R.sub.1 and R.sub.1 ' are independently hydrogen or an alkyl group having from 1 to 10 carbon atoms, n is a number from 0 to about 10, and R.sub.2, R.sub.3, R.sub.4, and R.sub.5 are independently hydrogen or an alkyl group having from 1 to about 10 carbon atoms; and(ii) at least one ester of a polycarboxylic acid; and(b) at least one polyurethane prepolymer which comprises the reaction product of(i) at least one substituted vinyl dioxolane monomer having the formula ##STR11##wherein R.sub.1, R'.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and n are as defined above; and(ii) at least one isocyanate or polyisocyanate having the formulaR.sub.6 (NCO).sub.pwherein R.sub.6 is an aliphatic or cycloaliphatic alkyl group having from 1 to about 10 carbon atoms or an aromatic group and p is at least 1, orat least one isocyanate-endcapped aliphatic urethane prepolymer having the formula ##STR12##wherein R.sub.7, R.sub.8 and R.sub.9 are independently an aliphatic or cycloaliphatic alkyl group having from 1 to about 10 carbons; and(c) at least one catalyst to initiate polymerization of the polyester and polyurethane prepolymers to form a coating.