Water-based pigment dispersions, the production thereof and the use of the same

US7135067B2 · kind B2 · utility

Assignee

• Clariant Corporation · DE

Inventors

• Andreas Harz · Schwalbach, DE
• Lothar Wihan · Rheinfelden (Baden), DE
• Martin Winter · Munster, DE
• Andreas Pfrengle · Bingen, DE

Key dates

• Filing date: Jun 29, 2002
• Grant date: Nov 14, 2006
• Expiry date: Jun 29, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D17/001
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a pigment dispersion consisting essentially of a) at least one organic or inorganic pigment or a combination of the same, b) an alpha-methyl--omega-hydroxy-polyethylene glycol ether having an average molar mass of between 250 and 1000 g/mol, c) standard dispersing agents for producing aqueous pigment dispersions, d) water, and e) optionally other standard additives.