Method for producing a pigment paste, aqueous electrocoat material, use thereof, method for cataphoretic electrocoating, and coated article

US10174212B2 · kind B2 · utility

Assignees

• BASF COATINGS GMBH · DE
• Henkel AG & Co. KGaA · DE

Inventors

• Ute Herrmann · Wuppertal, DE
• Sebastian Sinnwell · Goldkronach, DE
• Thorsten Gelbrich · Munster, DE
• Konstantinos Markou · Cologne, DE
• Rolf Schulte
• Sabine Holtschulte · Ascheberg, DE
• Dominik Stoll · Munster, DE
• Guenther Ott · Munster, DE

Key dates

• Filing date: Dec 20, 2013
• Grant date: Jan 8, 2019
• Expiry date: Sep 9, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25D13/22
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a method for producing a pigment paste and an electrocoat containing the paste, the past being made by mixing solid pigment particles with a grind resin in the presence of water and/or an organic liquid, wherein the grind resin includes a dispersion of core-shell particles in an epoxide prepolymer which is liquid at 20° C. and the core-shell particles have a silicone core and a polymer shell.