Patent ID: 6265028
Filing Date: 2001-07-24
Classification: C08J,C09D

Abstract:
A method of coating a substrate consisting essentially of polyurethanes, said method comprising applying an aqueous formulation onto the substrate to be coated, said aqueous formulation comprising:i) at least one film-forming polymer A obtained from ethylenically unsaturated monomers M, said polymer A being present in dispersed form in the aqueous formulation, and said monomers M comprising:from 70 to 94.8% by weight of n-butyl acrylate, 2-ethylhexyl acrylate or mixtures thereof,from 5 to 25% by weight of styrene, methyl methacrylate, ter-butyl methacrylate or mixtures there,from 0.1 to 5% by weight of at least one monomer M1 of the formula I, andfrom 0.1 to 5% by weight of at least one monomer M3 having an acid function or salt thereof,wherein the monomers M1 are selected from monomers of the formula I ##STR6##whereR.sup.1 and R.sup.2 independently of one another are hydrogen, linear or branched C.sub.1 -C.sub.5 -alkyl or, together are C.sub.2 -C.sub.4 -alkylene group which is unsubstituted or substituted once or twice by C.sub.1 -C.sub.5 -alkyl, C.sub.1 -C.sub.4 -alkoxy and/or hydroxyl,X is oxygen or sulfur, andR.sup.3 is a monoethylenically unsaturated radical of 2 to 20 carbon atoms, wherein the polymer A has a glass transition temperature Tg in the range from -40 to -10.degree. C., andii) at least one compound B having two or more aldehyde groups.