Adhesion promoters for aqueous coating compositions

US10208148B2 · kind B2 · utility

Assignee

• BASF COATINGS GMBH · DE

Inventors

• Cathrin Corten · Unna, DE
• Audree Andersen · Havixbeck, DE
• Markus Saedler · Hachenburg, DE
• Stefanie BOSHE-PLOIS · Ochtrup, DE
• Frederik Foelling · Munster, DE
• Andrea Misske · Speyer, DE

Key dates

• Filing date: Mar 26, 2015
• Grant date: Feb 19, 2019
• Expiry date: Jul 3, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2800/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a copolymer obtainable by copolymerization of at least three ethylenically unsaturated monomers each different from one another, the copolymer having at least three structural units (S1) and (S2) and (S3) different from one another, to the use of this copolymer as an adhesion-promoting additive in an aqueous coating composition, to an aqueous coating composition comprising at least one polymeric resin (A1), at least one pigment (B), and at least one copolymer of the invention, used as adhesion-promoting additive, as component (C), and also to methods for at least partly coating a substrate with a basecoat and for at least partly coating a substrate with a multicoat paint system.