Patent ID: 6541070
Filing Date: 2003-04-01
Classification: B05D,C09D,Y10T

Abstract:
A method of forming a composite coating film comprising applying a water-based base coat composition to a substrate and then applying a clear coat composition thereunto, and baking at 120 to 160Â° C.,wherein said water-based base coat composition comprises a pigment and a resin emulsion obtained by emulsion polymerization of an &agr;,&bgr;-ethylenically unsaturated monomer mixture, said &agr;,&bgr;-ethylenically unsaturated monomer mixture having an acid value of 3 to 50 mg KOH/g and a hydroxyl value of 10 to 150 mg KOH/g and containing at least 65% by weight of a (meth)acrylic ester whose ester moiety contains 1 or 2 carbon atoms.