Aqueous powder-paint dispersion

US6291579A · kind A · utility

Assignee

• BASF COATINGS GMBH · DE

Inventors

• Ulrich Kalck · Schifferstadt, DE
• Joachim Woltering · Hachenburg, DE
• Maximilian Bendix · Hachenburg, DE
• Heike Schuchmann · Lambach, DE
• Klaus Borho · Mutterstadt, DE
• Werner Weinle · Friedelsheim, DE
• Michael Schiessl · Altrip, DE
• Sven Ruck · Worms, DE
• Markus Antonietti · Marburg, DE

Key dates

• Filing date: Jul 27, 1999
• Grant date: Sep 18, 2001
• Expiry date: Jul 27, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2150/20
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing an aqueous powder coating dispersion, which comprises introducing a liquid melt comprising binders and crosslinking agents and also, if desired, catalysts, auxiliaries and further additives such as devolatilizers, UV absorbers, free-radical scavengers and/or antioxidants into an emulsifying apparatus, preferably with the addition of water and stabilizers, and cooling and filtering the resultant emulsion.