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

US5690698A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Andreas von der Eltz · Frankfurt am Main, DE
• Werner Russ · Flörsheim, DE
• Dirk Buchwald · Bad Camberg, DE

Key dates

• Filing date: Mar 6, 1996
• Grant date: Nov 25, 1997
• Expiry date: Mar 6, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/921
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A dye mixture of azo dyes having fiber-reactive groups of the vinylsulfone series, comprising one or more navy-blue disazo dyes with the bivalent 1-amino-8-hydroxy-3,6-disulfo-naphthylene coupling component, one or more red-dyeing mono azo dyes, containing a phenylamino-chlorotriazinylamino-disulfo-naphthol-coupling component and one or more orange-dyeing monoazo dyestuffs with an amino-sulfonaphthol-coupling component, which dye mixtures are suitable for dyeing hydroxy- and/or carboxamido-groups containing materials, in particular fiber materials, such as cellulose fibers, for example cotton, wool and synthetic polyamide fibers.