Henkel Receives a Patent for Corrosion Protection Agent for Coating Metallic Substrates

Henkel KGaA has received a patent for a chromium-free,curable corrosion protection agent for the first coating of metallic substrates.The corrosion protection agent has a pH in the range of from 1 to 3 and containing water and components:fluoro complex ions of titanium and/or zirconium,at least one corrosion protection pigment,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%weight and has a pH in a range from 1 to 3,an at least one polyvinyl amine comprised of amino groups that are acylated,the polyvinyl amine has 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%.