Patent ID: 6090164
Filing Date: 2000-07-18
Classification: C09B,D06P,Y10S

Abstract:
A dye mixture comprising one or more azo dyes conforming to the general formula ( 1) and one or more azo dyes conforming to the general formula (2) ##STR8## where:M is hydrogen, ammonium, an alkali metal or the equivalent of an alkaline earth metal;R.sup.1 is hydrogen or sulfo;R.sup.2 has one of the meanings of R.sup.1 ;X.sup.1 is fluorine or chlorine or a group of the general formula --N.sup.3 R.sup.4 or --OR.sup.3, where R.sup.3 is H or C.sub.1 -C.sub.4 -alkyl or aryl, which is optionally substituted, and R.sup.4 has one of the meanings of R.sup.3 or is a Y.sup.1 --SO.sub.2 -- or Y.sup.2 --SO.sub.2 -bearing aryl or C.sub.1 -C.sub.4 -alkyl group, or --NR.sup.3 R.sup.4 is optionally substituted morpholino or pyrimidino or --NHCN;X.sup.2 has one of the meanings of X.sup.1 ;Y.sup.1 is vinyl or is a group of the general formula --CH.sub.2 --CH.sub.2 --Z, where Z is a substituent which is optionally eliminated by the action of alkali;Y.sup.2 has one of the meanings of Y.sup.1 ;the groups --SO.sub.2 --Y.sup.1 and --SO.sub.2 --Y.sup.2 - are disposed meta or para to the azo group or amino group.