abstract |
The present invention provides a process for passivating a metal surface, and copolymers of at least water, acid and functionalized (meth) acrylic acid esters, phosphoric and / or phosphonic acid group containing monomers, COOH group containing monomers, and, where appropriate, additional monomers. It relates to a formulation suitable for carrying out the method, comprising. The copolymer comprises the monomer. |