Compacted carbon black pellets

US6803026B1 · kind B1 · utility

Assignee

• Bayer Chemicals AG · DE

Inventors

• Gunter Linde · Krefeld, DE
• Uwe Hempelmann · Aalen, DE
• Manfred Eitel · Kempen, DE

Key dates

• Filing date: Sep 14, 2000
• Grant date: Oct 12, 2004
• Expiry date: Sep 14, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to carbon black pellets obtained by compaction of carbon black powder in the presence of auxiliary substances, which pellets, despite the compaction, surprisingly exhibit greater color intensity than the powders on which they are based.