Patent ID: 6333077
Filing Date: 2001-12-25
Classification: B05D,C09D

Abstract:
A process for coating a substrate with a base lacquer layer and a clear topcoat lacquer layer, comprising:applying a base lacquer layer onto a substrate,applying an uncured clear topcoat lacquer layer onto the base lacquer layer in a wet-on-wet manner,exposing the uncured clear topcoat lacquer layer to high-energy radiation to partially cure the clear topcoat lacquer layer, andthereafter jointly stoving the base lacquer layer and the clear topcoat lacquer layer,wherein the base lacquer layer comprises at least one feature selected from the group consisting of a color and an effect,wherein the clear topcoat lacquer layer has a resin solids content including50 wt. % to 98 wt. % of a thermally curable polymer system (A) which is thermally curable by addition reactions, condensation reactions, or both, the system (A) containing substantially no free-radically polymerizable double bonds and substantially no groups capable of reacting in another way with free-radically polymerizable double bonds of system (B), and2 wt. % to 50 wt. % of a free-radical curing polymer system (B) which is curable via high-energy radiation mediated free-radical polymerization of olefinic double bonds, wherein total weight percentages add up to 100 wt. %, and wherein C.dbd.C equivalent weight of the resin solids total content from system (A) and system (B) is between 300 and 10,000.