Dye mixtures of fiber-reactive azo dyes and their use for dyeing hydroxy-and/or carboxamido-containing fiber material

US5779739A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Andreas von der Eltz · Frankfurt am Main, DE
• Werner Russ · Flörsheim, DE
• Bengt-Thomas Grobel · Idstein, DE

Key dates

• Filing date: Mar 28, 1996
• Grant date: Jul 14, 1998
• Expiry date: Mar 28, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B67/0052
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Dye mixtures of fiber-reactive azo dyes and their use for dyeing hydroxy- and/or carboxamido-containing fiber material Red-dyeing fiber-reactive phenylazoaminonaphthol dyes, yellow-dyeing fiber-reactive phenylazoaminobenzene dyes, blue-dyeing fiber-reactive copper formazan dyes and navy-dyeing fiber-reactive disazo dyes of the formulae (1) to (5) as claimed and defined in claim 1 are described which are suitable for dyeing hydroxy- and/or carboxamido-containing fiber material, such as cellulose fiber materials, wool and synthetic polyamide fibers individually or together or some of them together or as a mixture in trichromatic dyeing methods. During the dyeing process a definite hue within the color triangle can be obtained and kept constant by adding the individual dye solutions of the individual dyes and/or mixtures of some of the dyes in a controlled manner by means of the ATR measurement technique.