Aqueous carbon black dispersions

US6171382A · kind A · utility

Assignee

• Degussa-Huels AG · DE

Inventors

• Andreas Stubbe · Rodenbach, DE
• Horst Kleinhenz · Großkrotzenburg, DE
• Jurgen Leimann · Frankfurt, DE
• Alfons Karl · Hanau, DE

Key dates

• Filing date: Jun 4, 1999
• Grant date: Jan 9, 2001
• Expiry date: Jun 4, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D17/005
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Aqueous carbon black dispersions contain carbon black and surfactants, in addition to water. The dispersions are produced by dispersing the carbon black and the other constituents in water, using bead mills, ultrasonic mills and/or an ultra-turrax. The aqueous carbon black dispersions can be used to produce printing inks such as ink-jet inks or writing inks.