Water-soluble polyazo dyestuffs

US5597387A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Wolfgang Bauer · Krefeld, DE
• Dieter Baumgart · Egelsbach, DE
• Walter Zoller · Dippoldiswalde, DE

Key dates

• Filing date: Nov 9, 1995
• Grant date: Jan 28, 1997
• Expiry date: Nov 9, 2015

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06P3/3226
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to water-soluble polyazo dyestuffs of the general formula I ##STR1## wherein Y, Z, m and M.sup..sym.1 to M.sup..sym.4 are as defined in claim 1, processes for dyeing leather and paper with the polyazo dyestuffs, and recording liquids and inks containing the polyazo dyestuffs.