Precipitated water-insoluble colorants in colloid disperse form

US6494924B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Helmut Auweter · Schifferstadt, DE
• Heribert Bohn · Wattenheim, DE
• Robert Heger · Heidelberg, DE
• Dieter Horn · Heidelberg, DE
• Bernd Siegel · Ludwigshafen, DE
• Karl Siemensmeyer · Bischofswerda, DE

Key dates

• Filing date: Oct 3, 2000
• Grant date: Dec 17, 2002
• Expiry date: Oct 3, 2020

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06P5/30
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The dyes have an average particle size within the range from 5 nm to 1 &mgr;m and a variance of less than 50%. They are especially useful for ink-jet ink preparations.