Water-soluble azo dyestuffs

US4378312A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Ernst Hoyer · Frankfurt am Main, DE
• Fritz Meininger
• Rudolf Fass · Kelkheim, DE

Key dates

• Filing date: Dec 23, 1980
• Grant date: Mar 29, 1983
• Expiry date: Dec 23, 2000

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S534/01
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Water-soluble compounds and their salts suitable as dyestuffs of the formula ##STR1## in which D is a benzene or naphthalene nucleus, R.sub.1 and R.sub.2 are, inter alia, hydrogen, halogen, lower alkyl, lower alkoxy and sulfo, R.sub.1 being in ortho-position to the azo group, X is a fiber-reactive radical of the vinyl sulfone series, K.sub.1 and K.sub.2 are radicals of coupling components of the acetoacetarylide and pyrozolone series and K.sub.2 additionally denotes a radical of the sulfonaphthol series, the coupling components being bound to the triazine ring via amino groups, Y is a halogen atom, a sulfo group, a thio ether or oxygen ether radical, or a primary, secondary or tertiary amino group, A is an aliphatic, aliphatic-heterocyclic, aliphatic-aromatic or aromatic bridge member and n is zero or one. The novel compounds are prepared, for example, by reacting 2 mols of the diazo component with the fiber-reactive radical of the vinyl sulfone series with 1 mol of a bivalent coupling component containing the two radicals K.sub.1 and K.sub.2 linked to each other by the triazine ring, or 2 triazine radicals linked with each other by bridge member A; or by reacting one mol each of a…