Patent ID: 7655279
Filing Date: 2010-02-02
Classification: B05D,C08L,C09D,C23C

Abstract:
1. A passivating layer on a metal surface, obtained by contacting the metal surface with a composition comprising a copolymer as component A, synthesized from aa) 50 to 99.9% by weight of (meth)acrylic acid or salts thereof as component Aa; ab1) 0.1 to 50% by weight of a carboxylate-containing monomer of the formula I ab2) 0.1 to 50% by weight of monomers containing groups containing phosphonic acid or salts thereof, as component Ab2, and polymerizable with the monomers specified under aa) and ac), and also with component Ab1; ac) 0 to 30% by weight of further comonomers polymerizable with the monomers specified under aa) and ab1), and ab2) as component Ac.