Reactive dyes, containing two triazinyl radicals which are bridged via an aliphatic or aromatic bridge member

US5717078A · kind A · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• Athanassios Tzikas · Pratteln, CH
• Peter Aeschlimann · Allschwil, CH

Key dates

• Filing date: Aug 22, 1996
• Grant date: Feb 10, 1998
• Expiry date: Aug 22, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B62/4403
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Reactive dyes of the formula ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently of one another are hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 alkyl, PA1 X.sub.1 and X.sub.2 are halogen, PA1 B.sub.1 is an aromatic or aliphatic bridge member, or the radical of the formula --N(R.sub.2)--B.sub.1 --N(R.sub.3)-- is a piperazine radical, PA1 A.sub.1 is the radical of a monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, formazan or dioxazine chromophore and, PA1 A.sub.2 is a radical of the formula ##STR2## in which D.sub.1 is substituted or unsubstituted phenyl or naphthyl, PA1 R.sub.5 and R.sub.6 independently of one another are hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 alkyl, alk is substituted or unsubstituted C.sub.2 -C.sub.6 alkylene and PA1 Z is vinyl or a radical --CH.sub.2 --CH.sub.2 --U.sub.1, and U.sub.1 is a leaving group, and PA1 the radicals A.sub.1 and A.sub.2 differ from one another, are particularly suitable for dyeing or printing fibre materials containing hydroxyl groups or containing nitrogen. Dyeings with good fastness properties are obtained with a high tinctorial yield.