Method for the application of corrosion-resistant layers to metallic surfaces

US8420219B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Guido Vandermeulen · Ilvesheim, DE
• Alexander Gothlich · Mannheim, DE
• Markus Hickl · Munster, DE
• Michael Dornbusch · Munster, DE
• Monica Fernandez Gonzalez · Bischofswerda, DE
• Konrad Roschmann · Ladenburg, DE
• Hermann Bergmann · Mannheim, DE

Key dates

• Filing date: Apr 18, 2007
• Grant date: Apr 16, 2013
• Expiry date: Oct 29, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31681
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Method of applying corrosion control coats, especially integrated pretreatment layers or coats for atmospheric corrosion control, to metallic surfaces, using copolymers comprising as monomeric building blocks 20% to 70% by weight of monomers containing nitrogen heterocycles, 10% to 50% by weight of monomers containing acidic groups, 10% to 50% by weight of vinylaromatic monomers, and optionally 0% to 25% by weight of further monomers. Copolymers of the stated composition, and also preparations for applying corrosion control coats.