Water-soluble metal free or copper triazino-bis-[hydroxy-naphthylamino]-disazo dyestuffs containing fiber reactive groups, and a process for dyeing or printing cellulose fibers

US4485041A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

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

Key dates

• Filing date: Feb 17, 1981
• Grant date: Nov 27, 1984
• Expiry date: Feb 17, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B62/4411
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The novel water-soluble disazo dyestuffs consist of two monoazo dyestuff moieties each containing as diazo component an amine of the benzene or naphthalene series and as coupling component an amino-naphthol-mono- or disulfonic acid. The two moieties are bonded to each other via a triazine radical which carries a halogen atom, and is bound to the amino groups of the coupling components and the diazo components contain a fiber-reactive radical of the vinyl sulfone series. To produce the dyestuffs 2 mols of the diazo compound carrying the fiber-reactive radical of the vinyl sulfone series is coupled with 1 mol of a bivalent coupling component consisting of 2 radicals of the aminonaphthol bound to the triazine ring via the amino groups, or two monoazo dyestuffs each synthesized from the aforesaid diazo component and an aminonaphthol-disulfonic acid coupling component are reacted with a 1,3,5-trihalogeno-triazine. The metal-free dyestuffs can be transformed into the corresponding heavy metal complex dyestuffs, preferably copper, cobalt and chromium complex dyestuffs, by treatment with an agent donating a heavy metal cation. The novel dyestuffs are excellently suitable for dyeing and pri…