Dyestuff mixtures of fiber-reactive azo dyestuffs and their use for dyeing fiber material containing hydroxyl and/or carboxamide groups

US5780602A · kind A · utility

Assignee

• Pystar Textilfarben GmbH & Co. KG · DE

Inventors

• Christian Schumacher · Frankfurt am Main, DE
• Werner Russ · Flörsheim, DE

Key dates

• Filing date: Sep 5, 1997
• Grant date: Jul 14, 1998
• Expiry date: Sep 5, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B67/0047
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Mixtures of fiber-reactive azo dyestuffs with which black dyeings, including prints, are obtained on fiber materials containing hydroxy and/or carboxamide groups, such as cellulosic fiber materials, wool and synthetic polyamide fibers, are described. These dyestuffs mixtures comprise one or more dyestuffs of the following formulae (1) and (2): ##STR1## in which the substituents have the meaning given in the specification.