Aqueous polyurethane stoving lacquers and the use thereof...

Details Aqueous polyurethane stoving lacquers and the use thereof... Aqueous polyurethane stoving lacquers and the use thereof...

C - Chemistry, Metallurgy

08

G

400/5502

C08G 18/08 (2006.01) C08G 18/12 (2006.01) C09D 3/72 (1985.01)

Patent

CA 1254688

AQUEOUS POLYURETHANE STOVING LACQUERS AND THE USE THEREOF FOR THE PRODUCTION OF LACQUER FILMS AND COATINGS ABSTRACT OF THE DISCLOSURE The present invention is directed to aqueous stoving lacquers containing pigments or fillers wherein the binders are based on combinations of (a) polyure- thane prepolymers containing partly or completely neutralized carboxyl groups and blocked isocyanate groups and (b) polyurethane prepolymers containing free hydroxyl groups and partly or completely neutralized carboxyl groups. The binder components are further characterized by polyester and polyether segments, each being present in amounts of greater than 10% by weight. The present invention is also directed to films and coatings prepared from these aqueous stoving lacquers.

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