Method for producing a multi-layered coating

US10920100B2 · kind B2 · utility

Assignee

• BASF COATINGS GMBH · DE

Inventors

• Cathrin Corten · Unna, DE
• Dirk Eierhoff · Munster, DE
• Patrick Wilm · Ahlen, DE
• Britta Schnieders · Meppen, DE
• Nicole Freitag · Hachenburg, DE
• Heinz-Ulrich Grumpe · Sende, DE
• Joerg Schwarz · Munster, DE

Key dates

• Filing date: Jun 3, 2016
• Grant date: Feb 16, 2021
• Expiry date: Feb 21, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05D2451/00
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Provided herein is a method for producing a multicoat paint system on a metallic substrate by producing a basecoat or a plurality of directly successive basecoats directly on a metallic substrate coated with a cured electrocoat system, producing a clearcoat directly on the one or the topmost of the plurality of basecoats, and subsequently jointly curing the one or the plurality of basecoats and the clearcoat, wherein at least one basecoat material used for producing the basecoats includes at least one aqueous dispersion which includes a polymer whose preparation includes successive radical emulsion polymerization of three mixtures of olefinically unsaturated monomers.