Deep black dye mixtures of fiber-reactive azo dyes and a process for dyeing hydroxy and/or carboxamido containing fibers

US6015439A · kind A · utility

Assignee

• DyStar Textifarben GmbH & Co. · DE

Inventors

• Ron Pedemonte · Eppstein, DE
• Andreas Stroben · Odenthal, DE

Key dates

• Filing date: Feb 16, 1999
• Grant date: Jan 18, 2000
• Expiry date: Feb 16, 2019

Classification

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

Abstract

A dye mixture comprising one or more disazo dyes composed of 1-amino-3,6-disulfo-8-naphthol as the coupling component and of two diazo components of the aniline series containing each a fiber-reactive group of the vinylsulfone series and one or more monoazo dyes composed of a cyanoamido- or morpholino- or amino-substituted chlorotriazinylamino-sulfo-naphthol coupling component and a diazo component of the aniline series containing a fiber-reactive group of the vinylsulfone series, which dye mixtures yield on hydroxy- and/or carboxamido-containing fiber materials, such as cellulose fibers, in particular cotton, or on, for example, wool and synthetic polyamide fibers, deep black dyeings.