Heat-curable coating agent and its use

C - Chemistry – Metallurgy – 09 – D

Patent

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400/4026, 400/51

C09D 5/44 (2006.01)

Patent

CA 1239720

- 26 - Abstract of the Disclosure: The heat-curable coating agent according to the invention contains a combination of a binder, which possesses basic nitrogen groups and is rendered water-dilutable by protonation with an acid, and a crosslinking agent and, if required, pigments, fillers, corrosion inhibitors, surface coating assist- ants and catalysts, and the binder used is a reaction product of a dicarboxylic acid or of a dicarboxylate or of a (meth)acrylate oligomer or polymer with an adduct of a di- or triglycidyl ether and a polyamine, the poly- amine containing 2 or more amine nitrogen atoms per molecule and one or more alkylene chains of 3 or more carbon atoms between the amino groups, and has an NH amine number of from 50 to 150 mg of KOH/g and is com- bined with aminoplasts and/or phenoplasts as crosslink- ing agents. The novel coating agent is useful as a binder for the cathodic electrocoating of metal articles.

484065

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