Aqueous carbon black dispersions

US6685769B1 · kind B1 · utility

Assignee

• Degussa-Huels AG · DE

Inventors

• Alfons Karl · Hanau, DE
• Horst Kleinhenz · Großkrotzenburg, DE
• Werner Kalbitz · Rodenbach, DE
• Gerd Tauber · Seligenstadt, DE
• Andreas Stubbe · Rodenbach, DE
• Johann Mathias · Maintal, DE

Key dates

• Filing date: Jul 21, 2000
• Grant date: Feb 3, 2004
• Expiry date: Dec 3, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/22
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Aqueous carbon black dispersions contain carbon black and cationic and non-ionic surfactants in addition to water. The dispersions are produced by dispersing the carbon black and the other components in water with bead mills, ultrasonic mills or an Ultra Turrax mixer. The dispersions can be used to produce inks, lacquers and printing inks.