Patent ID: 6093497
Filing Date: 2000-07-25
Classification: B05D,C08L,C09D,Y10T

Abstract:
A process for preparing a multilayer coating on a substrate surface, comprising the steps of:(A) applying to a substrate surface coated with a first aqueous basecoat composition (i), a second aqueous basecoat composition (ii) comprising as film-forming agent an aqueous polymer dispersion, to form a coated substrate.(B) applying a transparent topcoat composition to the coated substrate of step (A), and(C) baking the basecoat compositions (i) and (ii) together with the topcoat comprising,wherein the basecoat composition (ii) comprises an aqueous polymer dispersion comprising:(x) an acrylate polymer comprising from 30 to 60% by weight of C.sub.1 -C.sub.8 alkyl (meth)acrylate monomers, from 30 to 60% by weight of vinyl-aromatic monomers and from 0.5 to 10% by weight of (meth)acrylic acid, and(y) a thickener, which does not have an associative effect, comprising an acrylate copolymer which comprises (C.sub.1 -C.sub.6)-alkyl (meth)acrylate and (meth)acrylic acid.