Patent ID: 6015439
Filing Date: 2000-01-18
Classification: C09B

Abstract:
A dye mixture comprising one or more disazo dyes conforming to the general formula (1) and one or more monoazo dyes conforming to the general formula (2) ##STR20## wherein: R.sup.1 is hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy;R.sup.2 is hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy;R.sup.3 is hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy;R.sup.4 is hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy;R.sup.5 is hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy;R.sup.6 is hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy;Y.sup.1 is vinyl, or is ethyl substituted in the .beta.-position by a substituent which is eliminated by the action of an alkali, forming the vinyl group;Y.sup.2 has one of the meanings of Y.sup.1 ;Y.sup.3 has one of the meanings of Y.sup.1 ;R is hydrogen or sulfo;Z is cyanoamino, morpholino or a group of the general formula (20) ##STR21## wherein R.sup.7 is hydrogen, alkyl of 1 to 4 carbon atoms, cyclohexyl, alkoxyalkyl of 3 to 6 carbon atoms, hydroalkyl of 2 to 4 carbon atoms or sulfoalkyl of 1 to 4 carbon atoms andR.sup.8 has one of the meanings given for R.sup.7 ;M is hydrogen or an alkali metal;the dye, respectively dyes, of the general formula (1) being present in the mixture in an amount of from 50 to 95% by weight, and the dye, respectively dyes, of the general formula (2) being present in the dye mixture in an amount of from 5 to 50% by weight.