Reactive dyes, processes for their preparation and their use

US5552532A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Herbert Klier · Bad Krozingen, DE
• Bernhard M uller · Weil am Rhein, DE
• Edmond Ruhlmann · Saint-Louis, FR
• Athanassios Tzikas · Pratteln, CH

Key dates

• Filing date: May 13, 1994
• Grant date: Sep 3, 1996
• Expiry date: May 13, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B62/043
• 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, PA0 B is an aliphatic bridge member, PA0 Y.sub.1 and Y.sub.2 independently of one another are halogen or carboxypyridinium, PA0 A.sub.1 is the radical of an anthraquinone, phthalocyanine, dioxazine, formazan or disazo dye or a radical of the formulae (2a) to (2h) defined in claim 1 and PA0 A.sub.2 is as defined above for A.sub.1 or is a radical of the formulae (2i) to (2m), PA0 where A.sub.1 and A.sub.2 have different meanings to one another, are particularly suitable for dyeing or printing fibre materials containing hydroxyl groups or containing nitrogen. Dyeings having good fastness properties coupled with a high tinctorial yield are obtained.