2-hydroxy-pyrid-6-one azo dyestuffs containing a cellulose fiber reactive substituent

Abstract

Abstract Azo dyestuffs of the general formula: D R A W I N G WHEREIN R represents an aromatic radical which may contain one or more further azo groups, M represents H or a metal atom forming part of a metal-complex system in the dyestuff, R1 represents an alkyl group or a phenyl radical which may be substituted, e.g., by lower alkyl, lower alkoxy or chlorine, R2 represents a hydrogen atom, an alkyl, aralkyl or cycloalkyl group or a phenyl radical which may be substituted, e.g., by lower alkyl, lower alkoxy or halogen, and R3 represents a hydrogen atom, a heterocyclic radical containing a cellulose-reactive substituent, or the acyl radical of an organic carboxylic or sulphonic acid which may or may not contain a cellulose-reactive substituent are valuable dyestuffs for a variety of substrates. For example those containing SO3H groups and a fiber-reactive group are valuable for dyeing and printing of cellulose polyamide and wool textile materials while those which are free from complex metal groups and sulphonic acid groups may be used as disperse dyestuffs.

Inventors

• 👤 P Austin
• 👤 E Young
• 👤 J Leng
• 👤 D Ridyard

Bibliographic Details