Patent ID: 6129989
Filing Date: 2000-10-10
Classification: B05D,C08L,C09D,Y10T

Abstract:
A process for preparing a multilayer coating on a substrate surface, comprising(A) applying to a substrate surface coated with a primer surfacer an aqueous basecoat composition comprising as film-forming agent an aqueous polymer dispersion to form a basecoated substrate,(B) applying a transparent topcoat composition to the basecoated substrate of step A, and(C) baking the aqueous basecoat composition together with the topcoat,wherein the aqueous basecoat composition comprises an aqueous polymer dispersion comprising(i) an acrylate polymer based on 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(ii) a thickener, which does not have an associative action, comprising an acrylate copolymer based on (C.sub.1 -C.sub.6 -alkyl (meth)acrylate and (meth)acrylic acid.