Particles with protected isocyanate groups

US8084531B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

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

Key dates

• Filing date: Aug 4, 2005
• Grant date: Dec 27, 2011
• Expiry date: Mar 15, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/8077
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Particles useful in curable coating systems are functionalized on their surface with a blocked isocyanate functionality. The blocked isocyanate is generated by reacting an organosilane having an oxygen, sulfur or nitrogen atom α to the silyl group, or having a cyclic structure containing N or O in the ring, attached directly to silicon.