Special UV absorbers for curable UV-protective coatings

US9273213B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Serguei Kostromine · Rheinbach, DE
• Timo Kuhlmann · Leichlingen, DE
• Rafael Oser · Krefeld, DE

Key dates

• Filing date: Oct 7, 2011
• Grant date: Mar 1, 2016
• Expiry date: Feb 10, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/005
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to organic UV absorbers which have two or more polymerizable acrylate or methacrylate groups in the molecule, to coating compositions comprising such UV absorbers, and also to coatings produced therefrom and to substrates coated therewith.