US 4,644,058 A · Reactive pyridone azo dyes having both monochlorotriazinyl and vinylsulfone type reactive groups

Abstract

A monoazo compound represented by a free acid of the formula: ##STR1## wherein R.sub.1 and R.sub.2 independently represent a hydrogen atom, or an alkyl, aralkyl or cyclohexyl group; R.sub.3 represents a hydrogen atom or a methyl or sulfonic acid group; R.sub.4 represents a hydrogen atom or an alkyl group; A represents an oxygen atom or --NH--; X.sub.1 and X.sub.2 independently represent a hydrogen or chlorine atom, or a methyl, methoxy, carboxyl or sulfonic acid group; and Y represents --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 Z in which Z represents a halogen atom, --OSO.sub.3 H or --OPO.sub.3 H.sub.2. This compound is used for dyeing cellulose fibers to give dyed products of yellow to reddish yellow having excellent fastnesses, particularly chlorine fastness.

Claims6

Dependent claims

A monoazo compound represented by a free acid of the formula, ##STR16## wherein R.sub.1 and R.sub.2 independently represent hydrogen, alkyl unsubstituted or substituted with hydroxy or alkoxy, aralkyl unsubstituted or substituted with alkyl, alkoxy or alkylamine, or cyclohexyl;

R.sub.3 represents hydrogen, methyl or sulfonic acid;
R.sub.4 represents hydrogen or alkyl unsubstituted or substituted with hydroxy, alkoxy, chloro, carboxy, alkoxy carbonyl or sulfo;
A represents oxygen;
X.sub.1 and X.sub.2 independently represent hydrogen, chlorine, methyl, methoxy, carboxyl or sulfonic acid;
and Y represents --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 Z in which Z represents halogen, --OSO.sub.3 H or --OPO.sub.3 H.sub.2.

2 more elements

Dependencies are inferred from the claim text.

Reactive pyridone azo dyes having both monochlorotriazinyl and vinylsulfone type reactive groups

Life of this patent

Reactive pyridone azo dyes having both monochlorotriazinyl and vinylsulfone type reactive groups

Life of this patent

Abstract

Claims6