Black dye mixtures of fiber-reactive azo dyes and use thereof for dyeing hydroxy- and/or carboxamido-containing fiber material

US6086639A · kind A · utility

Assignee

• DyStar Textilfarben GmbH & Co. Deutschland KG · DE

Inventors

• Joachim Steckelberg · Brunsbüttel, DE
• Werner Russ · Flörsheim, DE
• Christian Schumacher · Frankfurt am Main, DE
• Ron Pedemonte · Eppstein, DE

Key dates

• Filing date: Mar 9, 1999
• Grant date: Jul 11, 2000
• Expiry date: Mar 9, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/918
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention comprises a dye mixture comprising one or more, such as one, two or three, disazo dyes conforming to the general formula (1), one or more, such as one, two or three, monoazo dyes conforming to the general formula (2), and one or more, such as one, two or three dyes of the general formulae (3) and (4) wherein the formulae (1) to (4) are defined as given in claim 1, a method for its preparation and a process for dyeing hydroxy- and/or carboxamido containing fiber material in which a inventive dye is applied to the material.