Low-dust or dust-free dye preparations

US5366512A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Peter Mischke
• Konrad Opitz · Liederbach, DE
• Karl Rebsamen · Hofheim, DE

Key dates

• Filing date: Nov 10, 1992
• Grant date: Nov 22, 1994
• Expiry date: Nov 10, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B67/0094
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention provides for the use of alkanediols of from 4 to 8 carbon atoms as dustproofing agents in solid dye preparations. Dye preparations (powders) which contain such alkanediols are extremely low-dusting.