Polymer composition for corrosion protection

US8420174B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Alexander Goethlich · Mannheim, DE
• Frank Klippel · Ludwigshafen, DE
• Gunnar Schornick · Neuleiningen, DE
• Guido Vandermeulen · Ilvesheim, DE
• Helmut Witteler · Monsheim, DE
• Thomas Heidenfelder · Münstermaifeld, DE
• Markus Hickl · Munster, DE
• Michael Dornbusch · Munster, DE
• Konrad Roschmann · Ladenburg, DE
• Monica Fernandez Gonzalez · Heidelberg, DE

Key dates

• Filing date: Aug 9, 2006
• Grant date: Apr 16, 2013
• Expiry date: Mar 10, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31699
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a composition for coating metallic surfaces, comprising a binder component; a corrosion inhibitor polymer based on an ethylenically monocarboxylic and dicarboxylic acid and, if appropriate, further ethylenical monomers, a solvent component, and, if appropriate, crosslinkable components, and also pigment/filler components. The invention further relates to processes for its preparation and also to methods of coating a metallic surface using the composition, to coated metallic surfaces thus obtained, and to the use of the composition as a primer, particularly in coil coating or in atmospheric corrosion control. After drying, the applied layer preferably has a thickness of at least 3.1 μm and is therefore thicker than a typical pretreatment layer.