Reactive dyes, processes for their preparation and their use

US6323327A · kind A · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• Athanassios Tzikas · Pratteln, CH
• Rolf Deitz · Basel, CH
• Herbert Klier · Bad Krozingen, DE

Key dates

• Filing date: Nov 2, 2000
• Grant date: Nov 27, 2001
• Expiry date: Nov 2, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/918
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Reactive dyes of formula (1) ##STR1## wherein PA1 b is the number 1 or 2, PA1 A is the radical of formula (2) or (3) ##STR2## PA1 D.sub.1 is a radical off formula ##STR3## PA1 or the radical of an azo dye when b is the number 1 or the radical of an aromatic tetraazo component when b is the number 2, PA2 D.sub.2 is the radical of a diazo component, of the benzene or naphthalene series, PA2 R.sub.1 and R.sub.2 are each independently of the other hydrogen or C.sub.1 -C.sub.4 alkyl, (R.sub.3).sub.0-2 denotes from 0 to 2 substituents selected from the group C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen and sulfo, PA2 X.sub.1 is fluorine or chlorine, PA2 Y is vinyl or a radical --CH.sub.2 --CH.sub.2 --U and U is a group removable under alkaline conditions, PA2 l is the number 2, 3, 4, 5 or 6, and PA2 m and n are each independently of the other the number 0 or 1, wherein PA1 when A is a radical of formula (3) and D.sub.1 is the radical of an azo dye, at least one of the radicals D.sub.1 and D.sub.2 contains a fibre-reactive radical of formula (2) with the proviso that PA1 A is a radical of formula (2) when D.sub.1 is the radical of an aromatic tetraazo component, and PA1 A is a…