Patent ID: 8142897
Filing Date: 2012-03-27
Classification: C09D,C23C,Y10T

Abstract:
1. A chromium-free, curable corrosion protection agent for the first coating of metallic substrates, the corrosion protection agent having a pH in the range of from 1 to 3 and containing water and components: a) fluoro complex ions of titanium and/or zirconium, b) at least one corrosion protection pigment, c) at least one organic polymer or copolymer which is water-soluble or water-dispersible in the specified pH range and which as such in aqueous solution in a concentration of 50 wt. % has a pH in a range from 1 to 3, and d) at least one polyvinyl amine comprising amino groups that are acylated, said polyvinyl amine having a molecular weight of greater than 100,000 g/mol but not greater than 1,000,000 g/mol and a degree of acylation of not less than 80%.