Waterborne basecoat compositions for use in basecoat/clearco at applications

摘要

A method of forming a multilayer coating on a substrate, said method comprising the steps of: (a) forming a waterborne basecoat composition comprising the steps of: i) providing a pigmented toner composition comprising: water; a polyurethane resin dispersible in water, said polyurethane resin comprising the reaction product of a polyol and an aliphatic isocyanate; an acrylic or vinyl resin; and at least one pigment; ii) providing a mixing clear composition comprising a resin selected for a particular environment under which the basecoat composition is to be applied to the substrate'and dried, said resin being one of (1) an aqueous emulsion polymer produced by a free-radical addition polymerization reaction, and (2) a polyurethane resin dispersible in water; iii) mixing the pigmented toner composition with the mixing clear composition; (b) applying the basecoat composition to the substrate to form a basecoat layer; (c) providing a clear coat composition; and (d) applying the clear coat composition to the surface of the basecoat layer.