Abstract: The present invention relates to disperse azo dyes of formula wherein R1 is bromo, nitro, cyano, methyl, methoxy or trifluoromethyl; R2 is hydrogen, chloro, bromo or trifluoromethyl; R3 is hydrogen, chloro, bromo, methoxy, trifluoromethyl, nitro or cyano; and R4 is methyl, ethyl, n-propyl, 2-methoxyethyl, methoxycarbonylmethyl or 2-methoxycarbonylethyl; with the proviso that R1 is cyano in case R2 denotes chloro or bromo, to a process for the preparation of such dyes and to their use in the dyeing or printing of semi-synthetic and, especially, synthetic hydrophobic fibre materials, more especially textile materials.

Abstract: The present invention relates to disperse azo dyes of formula wherein R1 is bromo, nitro, cyano, methyl, methoxy or trifluoromethyl; R2 is hydrogen, chloro, bromo or trifluoromethyl; R3 is hydrogen, chloro, bromo, methoxy, trifluoromethyl, nitro or cyano; and R4 is methyl, ethyl, n-propyl, 2-methoxyethyl, methoxycarbonylmethyl or 2-methoxycarbonylethyl; with the proviso that R1 is cyano in case R2 denotes chloro or bromo, to a process for the preparation of such dyes and to their use in the dyeing or printing of semi-synthetic and, especially, synthetic hydrophobic fibre materials, more especially textile materials.

Abstract: The present invention relates to azo dyes of formula wherein R1 denotes C1-C12 alkyl which is unsubstituted or substituted by one or more C1-C12 alkoxy groups, hydroxyl groups, amino groups, cyano groups or halogen atoms and which may be interrupted one or more times by the radical —O—, —S—, —NR4—, —COO— or —OOC—; R4 is hydrogen or C1-C12 alkyl; either R2 is cyano and R3 is halogen or R2 is halogen and R3 is cyano; and Ar represents a carbocyclic or heterocyclic aromatic radical, to the process for the preparation thereof, to mixtures containing said dyes and to the use thereof in dyeing or printing semi-synthetic and especially synthetic hydrophobic fiber materials, more especially textile materials.

Abstract: The present invention relates to disperse azo dyes based on diazo components having at least one fluorine-containing substituent and an 2,6-diaminosubstituted pyridine coupling component, to a process for the preparation of such dyes and to their use in the dyeing or printing of semi-synthetic and, especially, synthetic hydrophobic fiber materials, more especially textile materials.

Abstract: The present invention relates to azo dyes of formula wherein R1 denotes C1-C12 alkyl which is unsubstituted or substituted by one or more C1-C12 alkoxy groups, hydroxyl groups, amino groups, cyano groups or halogen atoms and which may be interrupted one or more times by the radical —O—, —S—, —NR4—, —COO— or —OOC—; R4 is hydrogen or C1-C12 alkyl; either R2 is cyano and R3 is halogen or R2 is halogen and R3 is cyano; and Ar represents a carbocyclic or heterocyclic aromatic radical, to the process for the preparation thereof, to mixtures containing said dyes and to the use thereof in dyeing or printing semi-synthetic and especially synthetic hydrophobic fibre materials, more especially textile materials.

Abstract: The present invention relates to azo dyes of formula (1), wherein R1 denotes C1-C12alkyl which is unsubstituted or substituted by one or more C1-C12alkoxy groups, hydroxyl groups, amino groups, cyano groups or halogen atoms and which may be interrupted one or more times by the radical —O—, —S—, —COO— or —OOC—: R4 is hydrogen or C1-C12alkyl; either R2 is cyano and R3 is halogen or R2 is halogen and R3 is cyano; and Ar represents a carbocyclic or heterocyclic aromatic radical, to the process for the preparation thereof, to mixtures containing said dyes and to the use thereof in dyeing or printing semi-synthetic and especially synthetic hydrophobic fiber materials, more especially textile materials.

Abstract: The present invention relates to azo dyes of formula (1), wherein R1 denotes C1-C12alkyl which is unsubstituted or substituted by one or more C1-C12alkoxy groups, hydroxyl groups, amino groups, cyano groups or halogen atoms and which may be interrupted one or more times by the radical —O—, —S—, —COO— or —OOC—: R4 is hydrogen or C1-C12alkyl; either R2 is cyano and R3 is halogen or R2 is halogen and R3 is cyano; and Ar represents a carbocyclic or heterocyclic aromatic radical, to the process for the preparation thereof, to mixtures containing said dyes and to the use thereof in dyeing or printing semi-synthetic and especially synthetic hydrophobic fibre materials, more especially textile materials.

Abstract: The present invention relates to disperse azo dyes based on diazo components having at least one fluorine-containing substituent and an 2,6-diaminosubstituted pyridine coupling component, to a process for the preparation of such dyes and to their use in the dyeing or printing of semi-synthetic and, especially, synthetic hydrophobic fibre materials, more especially textile materials.

Abstract: The present invention relates to disperse azo dyes based on a phthalimido-substituted aniline coupling component and an aromatic-carbocyclic or an aromatic-heterocyclic diazo component, to a process for the preparation of such dyes and to their use in the dyeing or printing of semi-synthetic and, especially, synthetic hydrophobic fiber materials, more especially textile materials.

Abstract: The present invention relates to disperse azo dyes based on a phthalimido-substituted aniline coupling component and an aromatic-carbocyclic or an aromatic-heterocyclic diazo component, to a process for the preparation of such dyes and to their use in the dyeing or printing of semi-synthetic and, especially, synthetic hydrophobic fibre materials, more especially textile materials.

Abstract: The present invention relates to a compound of formula (I) wherein R1 is a radical of formula (II) R2 is —NH2 or a radical of formula (II), R3 and R4 are each independently of the other hydrogen, hydroxy, —NH2 or a radical of formula (II), R5 is hydrogen, halogen or —X—(CH2)n—Y, wherein X is a direct bond, —O— or —S—, Y is —OH or —OSO3H and n is a number from 0 to 6, with the proviso that at least one of the radicals R3, R4 and R5 is not hydrogen, to a process for the preparation thereof and to the use thereof in a method of producing mass-coloured plastics or polymeric colour particles.

Abstract: The present invention relates to a compound of formula I wherein R1 and R3 are each independently of the other —NHR5, NHSO2R5, —NHCOR5, —OR6 or —SR7, R2 and R4 are each independently of the other —OR6 or —SR7, with the proviso that not all of the substituents R1 to R4 are —SR7, R5 is hydrogen, alkyl, aryl, aralkyl or a group of formula —(CnH2nX)m—H wherein X is —O—, —S—, —SO2—, —NH—, —NR8—, —CONH— or —CONR8— and R8 is alkyl or aryl, n is a number from 2 to 6 and m is a number from 1 to 10, R6 is aryl or heteroaryl and R7 is alkyl, aryl, heteroaryl or a group of formula —(CnH2nX)m—H wherein X is —O—, —S—, —SO2—, —NH—, —NR8—, CONH— or —CONR8— and R8 is alkyl or aryl, to a process for the preparation thereof and to the use thereof in a method of producing mass-coloured plastics or polymeric colour particles.

Abstract: The present invention relates to a compound of formula (I) wherein R1 and R3 are each independently of the other —NHR5, NHSO2R5, —NHCOR5, —OR6 or —SR7, R2 and R4 are each independently of the other —OR6 or —SR7, with the proviso that not all of the substituents R1 to R4 are —SR7, R5 is hydrogen, alkyl, aryl, aralkyl or a group of formula —(CnH2nX)m—H wherein X is —O—, —S—, —SO2—, —NH—, —NR8—, —CONH— or —CONR8— and R8 is alkyl or aryl, n is a number from 2 to 6 and m is a number from 1 to 10, R6 is aryl or heteroaryl and R7 is alkyl, aryl, heteroaryl or a group of formula —(CnH2nX)m—H wherein X is —O—, —S—, —SO2—, —NH—, —NR8—, COHN— or —CONR8— and R8 is alkyl or aryl, to a process for the preparation thereof and to the use thereof in a method of producing mass-coloured plastics or polymeric colour particles.

Abstract: The present invention relates to a compound of formula (I) wherein R1 is a radical of formula (II) R2 is —NH2 or a radical of formula (II), R3 and R4 are each independently of the other hydrogen, hydroxy, —NH2 or a radical of formula (II), R5 is hydrogen, halogen or —X—(CH2)n—Y, wherein X is a direct bond, —O— or —S—, Y is —OH or —OSO3H and n is a number from 0 to 6, with the proviso that at least one of the radicals R3, R4 and R5 is not hydrogen, to a process for the preparation thereof and to the use thereof in a method of producing mass-coloured plastics or polymeric colour particles.

Abstract: 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 andn 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.

Abstract: Azo dyes of the formula (1) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently of one another are each hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 alkyl,R.sub.5, R.sub.6, R.sub.7 and R.sub.8 independently of one another are each hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen or sulfo,D.sub.1 and D.sub.2 independently of one another are each a radical of the benzene or naphthalene series, andY.sub.1 and Y.sub.2 independently of one another are each halogen, substituted or unsubstituted amino, morpholino or piperidin-1-yl or are piperazin-1-yl which is unsubstituted or substituted on the nitrogen,with the proviso that D.sub.1 and D.sub.2 are not both sulfophenyl if Y.sub.1 and Y.sub.2 are chlorine and R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are hydrogen, are dyes for various substrates, especially cellulosic fibre materials.