Coating composition containing an amine functional dispersed polymer and an isocyanate curing agent

Abstract

A coating composition containing about 40-90% by weight of film forming binder and 10-60% by weight of an organic liquid carrier; wherein the binder contains about (a) 50-90% by weight, based on the weight of the binder, of a dispersed acrylic polymer having (i) a core of gelled polymerized ethylenically unsaturated monomers which is not soluble in the organic liquid carrier and having amine functional groups and having chemically grafted thereto (ii) substantially linear stabilizer polymeric components that are soluble in the organic liquid carrier and comprise polymerized ethylenically unsaturated monomers and have a weight average molecular weight of about 1,000-20,000 determined by GPC (gel permeation chromatography) using polystyrene as the standard; wherein the monomers of the core and the stabilizer polymeric components are individually selected from the following group of monomers of alkyl (meth)acrylates, wherein the alkyl groups have 1-12 carbon atoms, hydroxy alkyl (meth)acrylate, wherein the alkyl groups have 1-4 carbons atoms, styrene, alkyl styrene, vinyl toluene, acrylonitrile, glycidyl (meth)acrylate, isobornyl (meth)acrylate, alpha-beta ethylenically unsaturated monocarboxylic acids and any mixtures thereof and the core contains about 5-40% by weight of polymerized ethylenically unsaturated glycidyl (meth)acrylate monomers reacted with a primary amine or a ketimine forming amine functional components that are capable of reacting with component (b); and (b) 10-50% by weight, based on the weight of the binder, of an organic polyisocyanate crosslinking agent.

Dependencies are inferred from the claim text.