Fluorine-containing powder coating

US5213896A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Michael Schlipf · Schorndorf, DE
• Gerhard Merten · L Atkinson Lane, DE

Key dates

• Filing date: Dec 12, 1991
• Grant date: May 25, 1993
• Expiry date: Dec 12, 2011

Classification

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

Abstract

A fluorine-containing powder coating is described, comprising PA0 a) a crosslinkable, fluorine-containing copolymer, composed of a vinyl ester of a highly branched carboxylic acid, whose acyl radical has 9 carbon atoms and is composed of isomers having two quaternary carbon atoms, to which 0 to 80 mol% of isomers which contain one quaternary carbon atom together with at least one tertiary carbon atom in the acyl radical are admixed, of a vinyl monomer containing OH groups, and of a fluoroolefin of the general formula EQU CF.sub.2 .dbd.CFX, PA0 in which X=F, a perfluoroalkyl radical having 1 to 8 carbon atoms or Cl, and PA0 b) 20 to 60% by weight of a crosslinking agent suitable for powder coating formulations. Preferably, the latter is a blocked polyisocyanate.