Metal azo pigments

US9663660B2 · kind B2 · utility

Assignee

• LANXESS Deutschland GmbH · DE

Inventors

• Stephan Michaelis · Leverkusen, DE
• Frank Linke · Recklinghausen, DE
• Heinz-Josef Fuellman · Leichlingen, DE
• Hans-Ulrich Borst · Elsdorf, DE
• Sabine Endert · Wuppertal, DE
• Dirk Pfuetzenreuter · Burscheid, DE

Key dates

• Filing date: Mar 22, 2016
• Grant date: May 30, 2017
• Expiry date: Mar 22, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/028
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Yellow metal azo pigments based on adducts of at least two metal azo compounds provide improved dispersion properties and are of excellent suitability for pigmentation of pigment preparations for a broad field of use.