C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
117/198, 400/550
C09D 175/00 (2006.01) B05D 7/26 (2006.01) C08G 59/40 (2006.01) C08L 63/00 (2006.01) C09D 163/00 (2006.01) C09J 175/00 (2006.01)
Patent
CA 1287939
Mo-2874 LeA 24,289 PROCESS FOR THE PRODUCTION OF SHEET STRUCTURES ABSTRACT OF THE DISCLOSURE The present invention relates to a process for the production of water- and solvent-resistant coatings by coating substrates with an aqueous coating compo- sition containing as binder a mixture of 1) reaction products, containing anionic structural units of the formula -NH-CO-?-C?N in a quantity of 5 to 1200 milliequivalents per 100 g of said reaction products, obtained by reacting organic polyisocyanates with salts of cyanamide and bases selected from ammonia, volatile primary and secondary amines having a pKb-value of at least 3.1 and any volatile aliphatic tertiary amines and 2) polyepoxides having at least two epoxide groups per molecule and an epoxide equivalent of at least about 80, said polyepoxides being used in a quantity corresponding to an equivalent ratio of epoxide groups to anionic structural units of about 0.1:1 to 3:1, and cross-linking the binder at a temperature of about 5 to 200°C. The present invention is also directed to the aqueous coating composition based on components 1 and 2. Mo-2874
526077
Kuchenmeister Rolf
Muller Hanns P.
Schafer Walter
Sickert Armin
Aktiengesellschaft Bayer
Kuchenmeister Rolf
Muller Hanns P.
Schafer Walter
Sickert Armin
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