Process for the production of water containing carbon black preparations

US4366139A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Gerhard Kuhner · Hanau, DE
• Wilhelm Berndt · Frankfurt, DE
• Lothar Rothbuhr · Hürth, DE
• Hans Wagner

Key dates

• Filing date: Feb 28, 1980
• Grant date: Dec 28, 1982
• Expiry date: Feb 28, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/19
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Beaded carbon black is disclosed with a water content of 30 to 80% by weight which are used for coloring of paper and concrete. The product has the advantage of dust-free handling and a higher jet black color compared to conventional carbon black powder.