Patent ID: 6153734
Filing Date: 2000-11-28
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 2 units of the structure I------[D--K]------ (I)where D is a tetrazo component of the formula II ##STR7## where n is 1 or 2,m is 1 or 2,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 -alkylcarbamoyl, sulfamoyl, mono- or di-C.sub.1 -C.sub.4 -alkylsulfamoyl, fluorine, chlorine, bromine, nitro or trifluoromethyl,R.sup.3 and R.sup.4 are each independently of the other hydrogen, hydroxysulfonyl or carboxyl,R.sup.5 and R.sup.6 are each independently of the other hydrogen or hydroxyl,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, hydroxysulfonyl, 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 or morpholinylcarbonyl substitution and with or without interruption by 1 oxygen atom, andA is phenylene with or without hydroxysulfonyl substitution, andwhere K is a bivalent radical of a coupling component of the formula III ##STR8## where R.sup.7 and R.sup.8 are each independently of the other hydroxyl, amino, morpholino, --NHAlk or --N(Alk).sub.2, andR.sup.9 is hydrogen, carboxyl, hydroxysulfonyl, 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, --Alk, --OAlk, --NHAlk or --N(Alk).sub.2.