C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
117/147, 117/195
C09D 5/02 (2006.01) B05D 7/02 (2006.01) B05D 7/14 (2006.01) C09D 125/04 (2006.01) C09D 131/02 (2006.01) C09D 133/02 (2006.01) C09D 133/24 (2006.01) C09D 151/00 (2006.01)
Patent
CA 2024623
28 FA-0402 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 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 +40C 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; 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; 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. 28
Den Hartog Herman C.
Konsza Eileen E.
Matthews James F.
Werner Ervin R. Jr.
E. I. Du Pont de Nemours And Company
Sim & Mcburney
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