Dyes, processes for their preparation and their use
AssigneeCiba Specialty Chemicals Corporation
InventorsBernhard Muller, Patric Nowack
Life of this patent
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AssigneeCiba Specialty Chemicals Corporation
InventorsBernhard Muller, Patric Nowack
Estimating the term…
Dyes of the formula ##STR1## in which A.sub.1 and A.sub.2 independently of one another are the radical of a monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, formazan, azomethine, dioxazine, phenazine, stilbene, triphenylmethane, xanthene, thioxanthone, nitroaryl, naphthoquinone, pyrenequinone or perylenetetracarbimide dye, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently of one another are hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 alkyl, Y.sub.1 and Y.sub.2 independently of one another are halogen, carboxypyridinium, substituted or unsubstituted amino or a heterocyclic radical bonded via a nitrogen atom and n is a number from 1 to 7, are particularly suitable for dyeing or printing fiber materials containing hydroxyl groups or nitrogen. Dyeings with good fastness properties are obtained with a high dyeing yield.
A dye of the formula ##STR204## in which A.sub.1 and A.sub.2 independently of one another are radicals of the formulae ##STR205## in which R.sub.10 is 0 to 3 identical or different substituents selected from C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, carboxyl and sulfo, ##STR206## in which R.sub.10 is 0 to 3 identical or different substituents selected from C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, carboxyl and sulfo, ##STR207## in which R.sub.10 is 0 to 3 identical or different substituents selected from C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, carboxyl and sulfo, ##STR208## in which R.sub.11 is 0 to 4 identical or different substituents selected from halogen, nitro, cyano, trifluoromethyl, sulfamoyl, carbamoyl, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, amino, acetylamino, ureido, hydroxyl, carboxyl, sulfomethyl and sulfo, ##STR209## in which R.sub.12 is C.sub.1 -C.sub.4 alkanoyl, benzoyl or a halogenotriazinyl radical which is unsubstituted or further substituted, ##STR210## in which R.sub.12 is C.sub.1 -C.sub.4 alkanoyl, benzoyl or a halogenotriazinyl radical which is unsubstituted or further substituted, ##STR211## in which R.sub.13 is 0 to 3 identical or different substituents selected from C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, carboxyl and sulfo, ##STR212## in which R.sub.14 and R.sub.16 independently of one another are hydrogen, C.sub.1 -C.sub.4 alkyl or phenyl, and
Dependencies are inferred from the claim text.