| abstract |
Chromium-free curable anticorrosive composition for initial coating of metal substrates, said composition having a pH in the range of 1 to 3, a) fluoro and complex ions of titanium and / or zirconium B) at least one anticorrosive pigment, c) water-soluble or water-dispersible in a specific pH range, and having a pH in the range of 1 to 3 in an aqueous solution at a concentration of 50% by weight, at least 1 An anticorrosive composition comprising two organic polymers, a method for treating a metal piece with the composition and the treated metal piece thus obtained. The organic polymer c) contains at least one monomer selected from acrylic acid, methacrylic acid, acrylic acid ester and methacrylic acid ester as an ethylenically unsaturated monomer capable of radical polymerization, and contains an epoxy group, a silane group, a hydroxyl group, It is preferably selected to have at least one type of functional group selected from among carboxyl groups, phosphate groups and phosphate ester groups. |