Patent ID: 6114512
Filing Date: 2000-09-05
Classification: C09B,Y10S

Abstract:
An oligomeric azo dye having an alternating construction made up of tetrazo components and coupling components, containing in the molecule at least 3 units of the structure I--[D--K]-- (I)where D is a tetrazo component of the formula II ##STR8## where x is a direct bond, oxygen, sulfur or a bridge member of the formula --NHCO--, --NHCONH--, --CO--, --NHSO.sub.2 --, --SO.sub.2 NHSO.sub.2 --, --SO.sub.2 --, --SO.sub.2 --NH--A--NH--SO.sub.2 --, -NAlk-CO-, -NAlk-CO-NAlk-, -NAlk-CO--NH--, -NAlk-SO.sub.2 --, --SO.sub.2 -NAlk-SO.sub.2 --, --SO.sub.2 -NAlk-A-NAlk-SO.sub.2 --, --SO.sub.2 -NAlk-A-NH--SO.sub.2 --, --CH.dbd.CH--, --CH.sub.2 CH.sub.2 --, --C(CH.sub.3).sub.2 --, --CH.sub.2 -- or --NH--,R.sup.1 and R.sup.2 are each independently of the other hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkanoyl, cyano, carboxyl, hydroxysulfonyl, C.sub.1-C.sub.4 -alkoxycarbonyl, hydroxyl, carbamoyl, mono- or di-(C.sub.1 -C.sub.4)-alkyl-carbamoyl, sulfamoyl, mono- or di-(C.sub.-C.sub.4)-alkyl-sulfamoyl, fluorine, chlorine, bromine, nitro or trifluoromethyl,R.sup.3 and R.sup.4 are each independently of the other hydrogen, hydroxysulfonyl or carboxyl,Alk is C.sub.1 -C.sub.4 -alkyl with or without hydroxyl, cyano, mono- or di-(C.sub.1 -C.sub.4)-alkylamino, amino, carboxyl or hydroxysulfonyl substitution and with or without interruption by 1 oxygen atom, andA is phenylene with or without hydroxysulfonyl substitution, andwhere K is a bivalent radical or a coupling component of the formula III ##STR9## where R.sup.5 is hydrogen, C.sub.1 -C.sub.4 -alkyl with or without hydroxyl, cyano, carboxyl, hydroxysulfonyl, methoxycarbonyl, ethoxycarbonyl or acetoxy substitution, andn is 1 or 2,wherein up to 90 mol % of component III is optionally replaced by a coupling component of the formula IV ##STR10## where R.sup.6 and R.sup.7 are each independently of the other hydroxyl, amino, morpholino, NHAlk or N(Alk).sub.2, andR.sup.8 is hydrogen, carboxyl, hydroxysulfonyl, C.sub.1 -C.sub.4 -alkyl, C.sub.l -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkoxycarbonyl, carbamoyl, mono- or di-(C.sub.1 -C.sub.4)-alkylcarbamoyl, sulfamoyl, mono- or di-(C.sub.1 -C.sub.4)-alkylsulfamoyl, -NHAlk or --N(Alk).sub.2.