Dye mixtures of fiber-reactive azo dyes and use thereof for dyeing material containing hydroxy-and/or carboxamido groups
AssigneeDystar Textilfarbon GmbH & Co. Deutschland KG
InventorsRon Pedemonte, Joachim Steckelberg, Christian Schumacher
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Abstract
The present invention provides a mixture of dyes which comprise one or more monoazo dyestuffs corresponding to the general formula (1) and one or more monoazo dyestuffs corresponding to the formula (2) ##STR1## wherein R1, R2, R3, R4, R5, R6, Y.sub.1, Y.sub.2 and M are defined as given in claim 1, methods for preparing said dye mixtures and methods for dyeing hydroxy and/or carboxamido-containing materials using said dye mixtures.
Claims7
A golden yellow to orange dye mixture comprising one or more monoazo dyestuffs corresponding to the general formula (1) and one or more monoazo dyestuffs corresponding to the general formula (2) in a mixing ratio of 80%:20% by weight to 20%:80% by weight and which does not contain a black reactive dyestuff of the general formula (a) ##STR36## in which R1 is hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy,
- R2 has one of the meanings of R1;
- R3 has one of the meanings of R2;
- R4 has one of the meanings of R3;
- R5 is hydrogen, amino, methyl, ethyl, methoxy, ethoxy, or NHX, whereby
- X is substituted or unsubstituted C.sub.1 -C.sub.4 Acyl or substituted or unsubstituted benzoyl, phthaloyl or aminocarbonyl
- R6 has one of the meanings of R5, provided that R5 and R6 are not simultaneously hydrogen;
- Y.sub.1 is vinyl or is ethyl which is substituted in the .beta.-position by a substituent which is eliminated by the action of an alkali, forming the vinyl group,
- Y.sub.2 has one of the meanings of Y.sub.1 ;
- M is hydrogen or an alkali metal, such as lithium, sodium and potassium.
Dependencies are inferred from the claim text.