Patent ID: 6426148
Filing Date: 2002-07-30
Classification: C08G,C09D,Y10T

Abstract:
A curable coating composition of a binder in organic solvent consisting essentially of:A) a non-isocyanate component wherein: i) 5-100% by weight of the non-isocyanate component is an oligomer or blend of oligomers with a weight average molecular weight not exceeding about 3,000, a polydispersity not exceeding 1.7, containing at least two epoxy functional groups but no significant hydroxy functionality; ii) 0-95% by weight of the non-isocyanate component of a polyester, oligo-ester or acrylic polymer each having at least two hydroxyl groups; B) an oligomeric isocyanate crosslinker containing at least two isocyanate groups; the equivalents of B to A being 0.5 to 3.0 of isocyanate to epoxy or epoxy plus hydroxyl; and C) a catalyst consisting essentially of dibutyl tin dilaurate or tertiary amine.