Trisazo or tetrakisazo dyes containing a heterocyclic group
AssigneeBASF SE
InventorsGuenter Hansen, Hans J. Kolbinger, Horst Scheuermann, Georg Zeidler
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Abstract
Polyazo dyes which in the form of the free acids correspond to the general formula I ##STR1## where D is the radical of a diazo component, or a radical of the formula ##STR2## n is 0 or 1, R.sup.1 is hydrogen, chlorine, bromine, methyl, ethyl, methoxy, ethoxy, carboxyl, trifluoromethyl, methylsulfonyl, ethylsulfonyl or hydroxysulfonyl, R.sup.2 is hydrogen, chlorine, bromine, methyl, methoxy, carbamyl or sulfamyl, one X is hydroxyl and the other X is amino, Y is hydrogen or hydroxysulfonyl, but at least one Y is hydroxysulfonyl and Z is a radical of the formula ##STR3##
Claims2
A polyazo dye which in the form of the free acid corresponds to the formula ##STR82## where D is selected from the group consisting of phenyl;
- phenyl substituted by chlorine, bromine, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, phenoxy, C.sub.1 -C.sub.4 -alkylsulfonyl, trifluoromethyl, carboxyl, hydroxysulfonyl, carbamoyl, sulfamoyl, mono- or di-C.sub.1 -C.sub.8 -alkyl substituted carbamoyl or sulfamoyl, ##STR83## phenylazo, or phenylazo substituted by chlorine, C.sub.1 -C.sub.4 -alkoxy or hydroxysulfonyl;
- naphthyl substituted by hydroxysulfonyl;
- and ##STR84## n is 0 or 1, R.sup.1 is hydrogen, chlorine, bromine, methyl, ethyl, methoxy, ethoxy, carboxyl, trifluoromethyl, methylsulfonyl, ethylsulfonyl or hydroxysulfonyl,
- R.sup.2 is hydrogen, chlorine, bromine, methyl, methoxy, carbamyl or sulfamyl,
- one X is hydroxyl and the other X is amino,
- Y is hydrogen or hydroxysulfonyl, but at least one Y is hydroxysulfonyl and
- Z is ##STR85##
Dependencies are inferred from the claim text.