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US 6,153,734 AGranted
Oligomer azo colorants
AssigneeBASF SE
InventorsGunter-Rudolf Schroder, Torsten Freund, Udo Mayer, Karl-Heinz Etzbach
Life of this patent
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Abstract
Oligomeric azo dyes 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 and K are as defined in the specification, are prepared and used alone or in mixtures for dyeing and printing natural or synthetic substrates.
Claims12
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, and
- A is phenylene with or without hydroxysulfonyl substitution, and
- where 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, and
- R.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.
8 more elements
Dependencies are inferred from the claim text.