Water-soluble disazo compounds containing 3-carboxy or 3-carbamoylpyridium-s-triazinyl groups and fiber-reactive groups of the vinyl sulfone series suitable as dyestuffs

US4845202A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Ludwig Schlafer
• Hartmut Springer · Königstein, DE
• Reinhard Hahnle

Key dates

• Filing date: Oct 23, 1987
• Grant date: Jul 4, 1989
• Expiry date: Oct 23, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B62/4415
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Water-soluble disazo compounds having useful fiber-reactive dye properties, which conform to the general formula (1) defined hereinafter and dye carboxamido- and/or hydroxy-containing materials in fast shades. Fast dyeings on cellulose fiber materials can also be obtained in a weakly acid to neutral pH range, for example together with disperse dyes for dyeing a polyester fiber portion. ##STR1## in which: A is phenylene which may be substituted by methyl, ethyl, methoxy, chlorine or sulfo, or is a radical of the formula ##STR2## in which G is a direct bond or a group of the formula --CH.dbd.CH-- or --NH--CO--NH-- and R.sup.1 and R.sup.2 are each independently of the other hydrogen, sulfo, methyl, ethyl, methoxy or ethoxy; PA0 D is phenylene which may be substituted by methyl, ethyl, methoxy, ethoxy, sulfo, carboxy, chlorine or bromine, or is naphthalene which may be substituted by sulfo or is a group of the formula ##STR3## and K, as a radical of a coupling component, is a radical of the formula ##STR4## in which M is hydrogen or an alkali metal and R.sup.o is hydrogen or sulfo and the free azo-bond in the amino-naphthol radical is ortho to the hydroxy group, R* is hydrogen, methyl …