Patent ID: 6210758
Filing Date: 2001-04-03
Classification: B05D

Abstract:
A method of coating a substrate, comprising steps of:(a) applying a layer of a chip resistant primer composition, wherein said chip resistant primer composition comprises as a resinous portion a polyurethane polymer having a glass transition temperature of 0.degree. C. or less and, optionally, a second component that has reactive functionality;(b) applying over the layer of the chip resistant primer composition a layer of a thermosetting primer composition, wherein the thermosetting primer composition comprises a polyurethane polymer having a glass transition temperature of 0.degree. C. or less, an acrylic polymer having a glass transition temperature that is at least about 20.degree. C. higher than the glass transition temperature of said polyurethane polymer, and a crosslinking component that is reactive with at least one of the polyurethane polymer and the acrylic polymer; and(c) applying over the layer of the thermosetting primer composition at least one layer of a topcoat composition,wherein the reactive functionality of the second component is reactive with at least one polymer selected from the group consisting of the polyurethane polymer of the chip resistant primer composition, the polyurethane polymer of the thermosetting primer composition, the acrylic polymer of the thermosetting primer composition, and combinations thereof.