| abstract |
A waterbased coating composition containing about 10-30% by weight of film forming binder dispersed in an aqueous carrier; wherein the binder contains about n a. 60-90% by weight, based on the weight of the binder, of a methylol (meth)acrylamide acrylic polymer of polymerized monomers of alkyl methacrylate, alkyl acrylate or mixtures thereof, 1-10% by weight, based on the weight of the acrylic polymer, of methylol methacrylamide, methylol acrylamide or mixtures thereof, 0.5-10% by weight, based on the weight of the acrylic polymer, of an ethylenically unsaturated carboxylic acid, 0.5-10% by weight, based on the weight of the acrylic polymer, of an ethylenically unsaturated hydroxyl containing monomer and the acrylic polymer has a glass transition temperature of -40° to +40° C. and a weight average molecular weight of 500,000 to 3,000,000; and the carboxyl groups of the carboxylic acid are reacted with ammonia to provide a pH to the composition of about 7.0-10.0; n b. 10-40% by weight, based on the weight of the binder, of a polyurethane which is either a polyester urethane, polyether urethane or polyacrylourethane; n the composition forms an automotive quality clear coat and/or pigmented color coat for automobiles and trucks; and the acrylic polymer can be used to form an automotive quality primer composition. |