Carboxylate-containing polymers for metal surface treatment

US7655279B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Frank Dietsche · Schriesheim, DE
• Helmut Witteler · Monsheim, DE
• Matthias Kluglein · Ludwigshafen, DE
• Frank Klippel · Ludwigshafen, DE

Key dates

• Filing date: Feb 19, 2004
• Grant date: Feb 2, 2010
• Expiry date: Sep 21, 2025

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05D7/54
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The present invention relates to a composition for treating surfaces, comprising a copolymer as component A, synthesized from (meth)acrylic acid or salts thereof, a carboxylate-containing monomer and/or monomers containing groups containing phosphoric and/or phosphonic acid or salts thereof, and further comonomers if desired, to a passivating layer on a metal surface, which comprises component A, to a process for forming said passivating layer, and to the use of the composition of the invention to passivate a metal surface.