Paints comprising particles

US7906179B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Volker Stanjek · Ampfing, DE
• Torsten Gottschalk-Gaudig · Burghausen, DE
• Juergen Pfeiffer · Mehring, DE
• Christoph Briehn · Munich, DE

Key dates

• Filing date: Jun 27, 2006
• Grant date: Mar 15, 2011
• Expiry date: Nov 26, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K9/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Coating formulations suitable for demanding applications such as automotive clear and top coats contain a hydroxyl-functional film forming resin, an isocyanate or blocked isocyanate curative, and functionalized metal oxide particles, where >50% of the reactive functionalities are more reactive towards isocyanates than at least 60% of the hydroxyl groups of the film forming resin. Coatings prepared therefrom have excellent abrasion resistance, even with low filler content.