Waterborne coating compositions having improved smoothness

Details Waterborne coating compositions having improved smoothness Waterborne coating compositions having improved smoothness

C - Chemistry, Metallurgy

09

D

C09D 7/12 (2006.01) C09D 5/02 (2006.01) C09D 151/08 (2006.01) C09D 167/00 (2006.01) C09D 201/00 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2184839

Waterborne coating compositions comprising polymeric film-forming resins and about 0.1 to 5 percent by weight based on weight of resin solids of an oligomer containing from about two to four urethane, urea, or amide moieties per molecule and two or more moieties selected from the group consisting of hydroxyl and tertiary amine. The oligomer improves the smoothness of the resulting coating.

Des compositions de revêtement aqueuses comprennent des résines formant un film polymère et environ 0,1 à 5 % en poids de la base pondérale des solides résineux d'un oligomère contenant d'environ 2 à 4 fractions d'uréthane, d'urée ou d'amide par molécule, et deux ou plusieurs fractions selectionnées dans le groupe composé d'hydroxyle et d'amine tertiaire. L'oligomère améliore le poli du revêtement obtenu.

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