Patent ID: 6551712
Filing Date: 2003-04-22
Classification: C08G,C09D,Y10T

Abstract:
A substrate coated with a curable coating composition of a binder in an organic solvent, the composition having a volatile organic content not exceeding 0.4 kilograms per liter, consisting essentially of:i) a binder selected from a linear or branched cycloaliphatic moiety-containing oligomer or blend of said oligomers with a weight average molecular weight not exceeding 3,000, a polydispersity not exceeding 1.5 and functionality A or A plus B; and ii) an oligomeric crosslinker or blend of said crosslinkers with a weight average molecular weight not exceeding 3,000 and functionality C; components i and ii reacting at cure to form a three-dimensional network having chains of substantially uniform, controllable molecular weight between crosslinks; wherein:said functionalities in components i and ii are selected from the group consisting of: A is hydroxyl and C is isocyanate; A is epoxy and C is isocyanate; A is hydroxyl and C is melamine; A is aldimine or ketimine, B is optionally hydroxyl, and C is isocyanate; A is epoxy, B is hydroxyl and C is isocyanate; and A is silane, B is hydroxyl and C is melamine.