Reactive dyes, process for their preparation and their use

US6451072B1 · kind B1 · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• Athanassios Tzikas · Pratteln, CH
• Rolf Deitz · Basel, CH

Key dates

• Filing date: Mar 24, 2000
• Grant date: Sep 17, 2002
• Expiry date: Mar 24, 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) whereinA is phenyl or naphthyl, each of which is unsubstituted or substituted by halogen, C1-C4alkyl, C1-C4alkoxy, carboxy, sulfo or a fiber-reactive group of formula (2a), (2b), (2c), (2d) or (2e)—SO2—Y  (2a),—NH—CO—(CH2)l—SO2—Y  (2b),—CONH—(CH2)m—SO2—Y  (2c),—NH—CO—CH(Hal)—CH2Hal  (2d)or—NH—CO—C(Hal)═CH2  (2e),B is an aliphatic linking group,D is the radical of a diazo component of the benzene or naphthalene series,R1 is hydrogen or unsubstituted or substituted C1-C4alkyl,R2 is hydrogen, cyano, carbamoyl or sulfomethyl,R3 is hydrogen or C1-C4alkyl,R is hydrogen or unsubstituted or substituted C1-C4alkyl or corresponds to a radical of formula (3)  wherein B, D, R2 and R3 have the meanings cited above,X1 is halogen, hydroxy, C1-C4alkoxy, unsubstituted or substituted C1-C4alkylthio or amino, or a N-heterocycle which may contain additional heteroatoms,Hal is chloro or bromo,Y is vinyl or a —CH2—CH2—U radical, U is a group a which is removable with alkali, and l …