Aqueous polyurethane-polyurea dispersion and aqueous base paint containing said dispersion

US10836927B2 · kind B2 · utility

Assignee

• BASF COATINGS GMBH · DE

Inventors

• Hardy Reuter · Kohlenbissen, DE
• Matthias BLOHM · Munster, DE
• Bernhard Steinmetz · Meiningen, DE
• Peggy Jankowski · Würzburg, DE
• Dirk Eierhoff · Munster, DE
• Thomas ZIHANG · Sendenhorst, DE

Key dates

• Filing date: Nov 16, 2015
• Grant date: Nov 17, 2020
• Expiry date: Dec 3, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D5/002
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to an aqueous polyurethane-polyurea dispersion (PD) having polyurethane-polyurea particles, present in the dispersion, having an average particle size of 40 to 2000 nm, and having a gel fraction of at least 50%, obtainable by The present invention also relates to basecoat materials comprising the dispersion (PD), and to multicoat paint systems produced using the basecoat materials.