Tetrakisazo Compounds, the method of preparation thereof and the process of pyeing

US5668260A · kind A · utility

Assignee

• Hoecht Aktiengesellschaft · DE

Inventors

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

Key dates

• Filing date: Apr 22, 1996
• Grant date: Sep 16, 1997
• Expiry date: Apr 22, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D11/328
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to tetrakisazo dyes of the general formula I ##STR1## in which ##STR2## and R.sup.1, R.sup.2, R.sup.3, M.sup..sym.1 to M.sup..sym.1 and n are as defined in Claim 1, to processes for their preparation and to their use.