Heat hardenable powder coatings based on polyester resins containing carboxyl groups

US4140728A · kind A · utility

Assignee

• Dynamit Nobel GmbH · DE

Inventors

• Siegfried Hahn · Hennef (Sieg), DE
• Gunter Tews · Witten, DE
• Helmut Wulff · Witten, DE

Key dates

• Filing date: May 5, 1977
• Grant date: Feb 20, 1979
• Expiry date: May 5, 1997

Classification

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

Abstract

A heat hardenable powder coating composition comprising a carboxyl group containing polyester resin and a polyepoxide compound and a catalyst said catalyst being a titanium and/or zirconium chelate which is solid at room temperature.