Abstract: Dye mixtures comprising at least one reactive dye of formula ##STR1## together with at least one reactive dye of formula ##STR2## give dyeings having good fastness properties on nitrogen-containing or hydroxyl group-containing fiber materials.

Abstract: A monoazo compound useful for dyeing or printing a fiber material represented by the following general formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or alkyl; U.sup.1 and U.sup.2 represent a group of the following general formula (U1), (U2) or (U3): ##STR2## wherein Y.sup.1, Y.sup.2 and Y.sup.3 represent --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 Z wherein Z represents a group which can be eliminated by the action of an alkali; and X.sup.1 and X.sup.2 represent halogeno, pyridinio or a group of the following general formula (X1), (X2), (X3) or (X4): ##STR3## or a salt thereof.

Abstract: Fiber reactive azo dyes of the Formula (1) ##STR1## wherein the variables are as defined in the specification are useful for the dyeing of hydroxy- and carboxamido-containing materials, especially textile fiber materials, in clear shades with a high degree of fixation.

Abstract: Described are compounds of formula ##STR1## which are suitable as fibre-reactive dyes for dyeing and printing a very wide range of different fibre materials.

Abstract: Azo reactive dyestuffs have the following formulaD.sup.1 --N.dbd.N--K.sup.1 --Y--K.sup.2 --N.dbd.N--D.sup.2 (1)wherethe radicals D.sup.1 and D.sup.2 are identical or different and are the radical of a diazo component of the formulaXSO.sub.2 --B--D-- (2).

Abstract: The novel aminomethylnaphthalenecarboxylic acid dyestuffs of the formula (I) ##STR1## in which the substituents and indices have the meaning given in the description, are outstandingly suitable for dyeing cellulosic materials, in particular paper.

Abstract: Reactive dyes of the formula ##STR1## where n is 1 or 2,R.sup.1 is hydrogen or hydroxysulfonyl,R.sup.2 is hydrogen or hydroxyl,R.sup.3 is substituted C.sub.1 -C.sub.4 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl or substituted phenyl,R.sup.4 is hydrogen or R.sup.3 and R.sup.4, together with the nitrogen atom linking them, form a heterocyclic radical andD is a radical of a diazo or tetrazo component, each having at least one mechanism,their use for dyeing or printing hydroxyl-containing or nitrogen-containing organic substrates, and novel aminonaphthalenes.

Abstract: Mixtures of fiber-reactive azo dyestuffs with which black dyeings, including prints, are obtained on fiber materials containing hydroxy and/or carboxamide groups, such as cellulosic fiber materials, wool and synthetic polyamide fibers, are described. These dyestuffs mixtures comprise one or more dyestuffs of the following formulae (1) and (2): ##STR1## in which the substituents have the meaning given in the specification.

Abstract: Water-soluble azo compounds, processes for their preparation and their use as dyestuffs.Water-soluble azo compounds are described which have fiber-reactive properties and are suitable as dyestuffs for dyeing material, in particular fiber material, containing hydroxy and/or carboxamide groups, such as, for example, cellulosic fiber materials, such as those of cotton, wool or nylon, and which have, as the radical of a diazo component, a radical of the formula ##STR1## in which R is hydrogen, alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms, halogen or sulfo, R.sup.o is hydrogen, alkyl having 1 to 4 carbon atoms, halogen, carboxy, aminocarbonyl, alkoxycarbonyl having 2 to 5 carbon atoms, sulfo or phenyl and R.sup.10 is hydrogen, alkyl having 1 to 4 carbon atoms or halogen, and which contain a fiber-reactive radical bonded to the coupling component via an amino group.

Abstract: A red reactive dye having the following formula (I) in its free acid form: ##STR1## wherein X is --CH.dbd.CH.sub.2 or --C.sub.2 H.sub.4 W (wherein W is a group splittable by alkali), A is a C.sub.2-3 alkylene group or a C.sub.2-3 alkylenoxy C.sub.2-3 alkylene group, E is a hydrogen atom, a C.sub.1-3 alkyl group or --A--SO.sub.2 X (wherein A and X are as defined above), n is 0 or 1, l is 1 or 2, m is 0 or 1, and R is a hydrogen atom, --OH, --CN, --CH.sub.3, --CF.sub.3, --SO.sub.3 H, --COOH, --CH.sub.2 SO.sub.3 H or --CH.sub.2 SO.sub.2 X (wherein X is as defined above), provided that a compound of the formula (I) wherein R is a hydrogen atom, each of m and n is 0, l is 1, and --SO.sub.2 X is --SO.sub.2 CH.dbd.CH.sub.2 which is bonded at the ortho position to the azo group, is excluded.

Abstract: Reactive dyes of the formula ##STR1## in which 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,X.sub.1 and X.sub.2 are halogen,B.sub.1 is an aromatic or aliphatic bridge member, or the radical of the formula --N(R.sub.2)--B.sub.1 --N(R.sub.3)-- is a piperazine radical,A.sub.1 is the radical of a monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, formazan or dioxazine chromophore and,A.sub.2 is a radical of the formula ##STR2## in which D.sub.1 is substituted or unsubstituted phenyl or naphthyl,R.sub.5 and R.sub.6 independently of one another are hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 alkyl, alk is substituted or unsubstituted C.sub.2 -C.sub.6 alkylene andZ is vinyl or a radical --CH.sub.2 --CH.sub.2 --U.sub.1, and U.sub.1 is a leaving group, andthe radicals A.sub.1 and A.sub.

Abstract: A phthalocyanine monoazo compound which is represented by the following formula (I): ##STR1## wherein Pc represents a phthalocyanine group; M represents nickel, cobalt or copper;R.sub.1 represents a hydrogen atom or a lower alkyl group;R.sub.2 and R.sub.3 represent a hydrogen atom, a lower alkyl group, a lower alkoxy group or a sulfo group;R.sub.4 represents a hydrogen or a lower alkyl group;A represents a group containing a triazine group or a pyrazole group and/or --SO.sub.2 X wherein X represents --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 Y and Y represents a group splittable by the action of an alkali;p is a number of 0-2; q is a number of 1-3; r is a number of 1-2; p+q+r is 4 or lessor which is a salt of the compound of formula (I).

Abstract: Described are compounds of formula ##STR1## which are suitable as fiber-reactive dyes for dyeing a wide range of fiber materials.

Abstract: A process for the coloration of a substrate, especially a textile, comprising the steps of:(a) applying to the substrate a mixture comprising an aqueous solvent and a water-soluble dye comprising molecules which contain a nucleophilic group and an electrophilic group; and(b) heating or basifying or heating and basifying the dye thereby causing molecules of the dye to join together.Also claimed are dyes, polymers and oligomers.

Abstract: Novel sulfonated quinolone compounds used in the preparation of fiber reactive dyes having the formula: ##STR1## being N-alkyl substituted-4-hydroxy-6-sulfo-2-quinolone. The alkyl group bonded to the nitrogen in the quinolone has from 1 to 4 carbon atoms which may be further substituted by an hydroxy, amino, or sulfo group. The compounds of the invention may be prepared by the sulfonation of an N-alkyl substituted-4-hydroxy-2-quinolones, ##STR2## followed by selective desulfonation to yield the compounds of interest. New monoazo fiber reactive dyes having the formulas: ##STR3## and their metal complexes, may be prepared from these sulfonated compounds by the diazotization of an amine component, selected from an unsubstituted, or a substituted benzene or naphthalene compound, containing a fiber reactive group, and coupling the diazo component to the compounds of the invention.

Abstract: Compounds of the formula ##STR1## in which the variables are as defined in the claims, and which are suitable as fibre-reactive dyes for dyeing and printing widely varying fibre materials, are described.

Abstract: Reactive dyes of the formula ##STR1## where n is 1 or 2R.sup.1 is hydrogen or hydroxyl andD is the radical of a diazo or tetrazo component with, in each case, at least one anchor radical of the formula SO.sub.2 --Y where Y is vinyl or substituted ethyl,and the use thereof for dyeing or printing organic substrates having hydroxyl groups or nitrogen atoms are described.

Abstract: The invention relates to compounds of formula ##STR1## wherein the variables are as claimed in the claims and which are suitable as fibre-reactive dyes for dyeing a wide range of fibre materials.

Abstract: A compound of the Formula (1) and salts thereof: ##STR1## wherein: R.sup.1 and R.sup.2 are each independently optionally substituted alkyl;R.sup.3 is H or optionally substituted alkyl;X is a labile atom or group;Y is a labile atom or group or a group of formula ##STR2## or --OR.sup.5 ; R.sup.4 is H or alkyl;R.sup.5 is H or optionally substituted alkyl or aryl; andm and n each independently have a value of 0 or 1.The compounds are useful for the coloration of textile materials.

Abstract: Reactive dyes of formula ##STR1## wherein Z is a group of formula --CH.dbd.CH.sub.2 or --CH.sub.2 --CH.sub.2 --Y, and Y is a leaving group, and K is a radical of formula ##STR2## wherein X is a radical of formula --(CH.sub.2).sub.n --Cl, ##STR3## or --CH.dbd.CH.sub.2 ; Hal is halogen; and n is 1, 2, 3 or 4; R is hydrogen or unsubstituted or substituted C.sub.1 -C.sub.4 alkyl; R.sub.1 is amino or hydroxyl; R.sub.2 is methyl or carboxyl; and R.sub.3 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.2 -C.sub.4 alkanoylamino, halogen or carboxyl, are particularly suitable for dyeing or printing cellulosic fibre materials or natural or synthetic polyamide fibre materials in high tinctorial yield, and give dyeings and printings with good fastness properties.

Abstract: A monoazo compound suitable for dyeing or printing materials having a hydroxy group and/or amide group represented by the following general formula (I): ##STR1## wherein D represents a phenyl or naphthyl group; A represents a group represented by the following formula: ##STR2## or A represents a group represented by the following formula: ##STR3## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, n and Y have the meaning given in the specification; and salts thereof.

Abstract: There are described novel monoazo dyes of the below-indicated and formula (1) which have fiber-reactive properties and are used as dyes for dyeing hydroxy- and/or carboxamido-containing material, in particular fiber material, such as wool and synthetic polyamide and in particular cellulose fiber materials, such as cotton. ##STR1## X, Y, M and m are as defined in claim 1.

Abstract: Reactive dyes of the formula ##STR1## where A, K and Z are each as defined in the claims, are especially useful for dyeing or printing cellulosic fiber materials, producing dyeings and prints having good fastness properties in a high yield.

Abstract: Black fiber-reactive azo dye mixtures and use thereof for dyeing hydroxy- and/or carboxamido-containing fiber materialMixtures of fiber-reactive dyes are described which can be used to obtain deep black dyeings and prints on hydroxy- and/or carboxamido-containing fiber materials such as cellulose fiber materials, wool and synthetic polyamide fibers by the application methods which are customary in the art for fiber-reactive dyes. The dye mixtures comprise one or more disazo dyes of the formula (1) and one or more monoazo dyes of the formula (2) ##STR1## in which M is hydrogen or an alkali metal, R.sup.o is sulfo or carboxyl, R.sup.1 is hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy , R.sup.2 is hydrogen, methyl, ethyl, methoxy or ethoxy, Y is at each occurrence independently of the others vinyl, .beta.-chloroethyl, .beta.-phosphatoethyl, .beta.-thiosulfatoethyl or .beta.

Abstract: Water-soluble azo compounds are described which possess fiber-reactive properties and which are suitable as dyes for the dyeing of material, in particular fiber material, which contains hydroxy and/or carboxamido groups, examples being cellulosic fiber materials such as cotton, wool and nylon, and which compounds possess, as the radical of a diazo component, a radical of the formula ##STR1## in which R is hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, halogen or sulfo and G forms to the benzene ring the radical of a heterocycle which is free from olefinic double bonds and which contains at least one carboxamide group of the formula --CO--N(R.sup.10)-- in which R.sup.

Abstract: Compounds of the formula ##STR1## in which the variables are as defined in the claims, which are suitable as fibre-reactive dyes for dyeing or printing widely varying fibre materials, are described.

Abstract: Reactive dyes of the formula ##STR1## in which K and Z are as defined in claim 1, are suitable in particular for the dyeing and printing of cellulose-containing fibre material and produce dyeings and prints having good fastness properties in high coloristic yield.

Abstract: Reactive dyes of formula ##STR1## wherein Z is a group of formula --CH.dbd.CH.sub.2 or --CH.sub.2 --CH.sub.2 --Y, and Y is a leaving group, and K is a radical of formula ##STR2## wherein X is a radical of formula ##STR3## Hal is halogen; and n is 1, 2, 3 or 4; R is hydrogen or unsubstituted or substituted C.sub.1 -C.sub.4 alkyl; R.sub.1 is amino or hydroxyl; R.sub.2 is methyl or carboxyl; and R.sub.3 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.2 -C.sub.4 alkanoylamino, halogen or carboxyl, are particularly suitable for dyeing or printing cellulosic fiber materials or natural or synthetic polyamide fiber materials in high tinctorial yield, and give dyeings and printings with good fastness properties.

Abstract: There are described benzophenoneazo dyes of the formula ##STR1## where the ring A can be benzofused and a benzofused ring A can be overbridges,m is 1 or 2,K is the radical of a coupling component,Y is hydrogen or arylazo,one of the two radicals X.sup.1 and X.sup.2 is hydrogen and the other is hydroxysulfonyl,R.sup.1, R.sup.2 and R.sup.3 are independently of the others hydrogen, halogen, C.sub.1 -C.sub.12 -alkyl, cyclohexyl, phenyl, 2-hydroxy-ethylsulfonyl or C.sub.1 -C.sub.4 -alkoxy or, when m is 1 and Y is hydrogen, one of these substituents can also be the radical of the formula ##STR2## where L.sup.1 is a chemical bond or a bridge member, and X.sup.1, X.sup.2, R.sup.4, K and the ring A are each as defined above, andR.sup.4 is hydrogen, halogen or C.sub.1 -C.sub.

Abstract: If highly concentrated aqueous solutions of azo dyes are prepared directly by diazotization and coupling reactions, appreciable difficulties generally result as a consequence of the fact that the diazotization and coupling reactions give rise to viscous phases which lead to stirring problems in the reaction apparatus used, which in turn results in an incomplete synthesis. The novel process for preparing concentrated aqueous dye solutions of an anionic dye in an aqueous medium overcomes this disadvantage by carrying out the diazotization of the aromatic amine diazo component and/or the coupling reaction between the diazonium salt and the coupling component in the presence of an auxiliary which exerts a viscosity-reducing effect on pasty phases. Examples of such auxiliaries are optionally alkyl-substituted naphthalenesulfonic acid-formaldehyde condensation products, ligninsulfonates, polyacrylates and copolymers of maleic anhydride and methacrylic acid or acrylic acid.

Abstract: Fibre-reactive dyestuffs based on barbituric acid, of the following formula ##STR1## wherein the substituents have the meaning given in the description, are distinguished by improved properties.

Abstract: The dyestuffs of the formula ##STR1## in which D is the radical of a diazo component,SO.sub.2 X is the radical of a fibre-reactive group,and the remaining substituents have the meaning given in the descriptionare suitable for dyeing and printing hydroxyl- and amido-containing materials.

Abstract: A monoazo compound of the following formula, ##STR1## wherein D is phenylene or naphthylene; X is halogeno, pyridinio or ##STR2## B is --OR.sub.3, --SR.sub.4, ##STR3## in which R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are each hydrogen, alkyl, phenyl, naphthyl or benzyl, r is 0 or 1, and E is O, SO, SO.sub.2, CH.sub.2 or NR.sub.8, in which R.sub.8 is hydrogen or C.sub.1 -C.sub.4 alkyl; R, R.sub.1, R.sub.2 and R.sub.7 are each hydrogen or alkyl; A.sub.1, A.sub.2 and A.sub.3 are each phenylene, naphthylene or alkylene; Z.sub.1, Z.sub.2 and Z.sub.3 are each --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 Y, in which Y is a splittable group; and p is 0 or 1; which compound is useful for dyeing or printing fiber materials to obtain a product dyed or printed in a color superior in various fastness properties with superior build-up property.

Abstract: Herein is provided a trisazo compound represented by formula (I) in the free acid form: ##STR1## wherein Q.sub.1 is an unsubstituted or substituted phenylene or naphthylene group, Q.sub.2 is an unsubstituted or substituted phenyl or naphthyl group, Z is --SO.sub.2 CH.sub.2 CH.sub.2 OH or --SO.sub.2 CH.sub.2 CH.sub.2 SO.sub.3 H group, and L is 0 or 1. The trisazo compound provided herein is excellent in solubility and gives deep colored dyed product or image when used in dyeing or printing, so that it is useful as a dye and an ink. Herein are also provided a method for dyeing fiber materials, paper or leather by using said trisazo compound, and an ink containing said trisazo compound.

Abstract: The invention relates to compounds of the formula ##STR1## in which the variables are as defined in the claims. The compounds are suitable as dyes, in particular for dyeing and printing cellulosic fibre materials, and produce dyeings and prints with good all-round fastness properties.

Abstract: Reactive dyes of formula ##STR1## wherein X, Z, R.sub.1, R.sub.2, R.sub.3, R.sub.4 and m are as defined in claim 1, are particularly suitable for dyeing or printing cellulosic fiber materials or natural or synthetic polyamide fiber materials in high tinctorial yield, and give dyeings and prints with good fastness properties.

Abstract: A bisazo compound of the following formula: ##STR1## wherein R.sup.1 and R.sup.3 are each hydrogen or alkyl; D is phenylene or naphthylene; one of X.sup.1 and X.sup.2 is NH.sub.2 and the other is OH; Z.sup.1 and Z.sup.2 are each --CH.dbd.CH.sub.2 or --CH.dbd.CH.sub.2 Z' in which Z' is a splittable group; B is monosulfophenylene, monosulfophenylene-methylene or mono- or di-sulfonaphthylene-methylene; U is phenylene or an aliphatic bridging group; and J is an amono-derivative group or, J may be alkoxy when X.sup.1 is OH and U is phenylene, and J may be alkoxy or phenoxy when X.sup.1 is OH and U is the aliphatic bridging group. This compound is useful for dyeing or printing fiber materials and gives a dyed or printed product having a color superior in various fastness properties with superior build-up property.

Abstract: A bisazo compound represented by the formula (I) in the free acid form, ##STR1## wherein D is unsubstituted or substituted phenyl or naphthyl; A and B are independently unsubstituted or substituted phenylene or naphthylene; R is hydrogen or unsubstituted or substituted lower alkyl; X is aromatic amino residue or aliphatic amino residue; arid Y is a group represented by the formula, ##STR2## wherein R.sup.1 is hydrogen or unsubstituted or substituted alkyl, W.sub.0 is unsubstituted or substituted alkylene; and Z is vinyl or --CH.sub.2 CH.sub.2 Z.sub.1, in which Z.sub.1 is a group capable of being split by the action of an alkali; is a reactive dye useful for dyeing or printing fiber materials having hydroxy groups and/or amide groups to brown or violet color, and can provide dyed or printed products with superior fastness properties and dyeing properties such as build-up property.

Abstract: A monoazo fiber reactive dye of the formula: ##STR1## wherein X and Y are independently selected from .beta.-sulfatoethyl, .beta.-thiosulfatoethyl and .beta.-phosphatoethyl group and R is hydrogen, and C.sub.1 -C.sub.4 alkyl; preferably methyl. These dyes are useful in conducting exhaust dyeings at low dye bath salt concentrations.

Abstract: A water-soluble dye having a reactive group of the Formula (1): ##STR1## wherein: R.sup.1 is H or optionally substituted alkyl;R.sup.2 is H or C.sub.1-4 -alkyl;L is a divalent organic spacer group; andV is vinyl or a group convertible to vinyl on treatment with aqueous alkali.The reactive dyes of the present invention are useful for coloring natural and artificial textile materials containing amino or hydroxyl groups.

Abstract: Reactive dyes of the formula I ##STR1## where n is 0 or 1R.sup.1, R.sup.2 and R.sup.3 are in each case hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl,R.sup.4 is fluorine, chlorine, bromine, C.sub.1 -C.sub.4 -alkylsulfonyl, phenylsulfonyl or a radical of the formula ##STR2## L is a bridge member, A is unsubstituted or substituted C.sub.2 -C.sub.8 -alkylene,Y is vinyl or a radical of the formula --CH.sub.2 --CH.sub.2 --Q, Q being a group which can be removed under alkaline reaction conditions, andD is phenyl or naphthyl, it being possible for these radicals to be substituted, and a process for preparing reactive dyes by oxidation of the abovementioned compounds are described.

Abstract: Reactive dyes of the formula ##STR1## in which D, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are as defined in claim 1, are particularly suitable for dyeing or printing cellulosic fiber materials or naturally occurring or synthetic polyamide fiber materials with a high tinctorial yield, and produce dyeings and prints having good fastness properties.

Abstract: Symmetric azo dyestuffs of the formula ##STR1## wherein the substituents have the meaning given in the description, produce improved dyeings or prints on wool and cellulose materials.

Abstract: Preparation of water-soluble reactive dyes containing vinylsulphonyl and .beta.-sulphatoethylsulphonyl groups by the oxidation of dyes containing .beta.-hydroxyethylmercapto radicals, and then sulphation and, if appropriate, conversion of the .beta.-sulphatoethylsulphonyl radical to the vinylsulphonyl radical with bases.

Abstract: The fibre-reactive dyes of the formula ##STR1## where the variables are each as defined in the claims, are suitable in particular for dyeing nitrogen-containing and hydroxyl-containing fibre materials.

Abstract: A reactive dye comprising a 1,3,5-s-triazine group having a chromophoric group at two of the 2-, 4- and 6-positions and a substituent at the remaining 2-, 4- or 6-position selected from H, optionally substituted alkyl, optionally substituted phenyl, --CH(CO.sub.2 R.sup.1).sub.2, --NR.sup.1 SO.sub.2 R.sup.2, and --SO.sub.2 R.sup.2, wherein each R.sup.1 is H or alkyl and R.sup.2 is alkyl. The reactive dyes may be used for the coloration of textile materials.

Abstract: Reactive dyes of the formula ##STR1## in which A, U, R.sub.1, R.sub.2, Z and n are as defined in claim 1, are particularly suitable for dyeing or printing cellulosic fibre materials or naturally occurring or synthetic polyamide fibre materials with a high tinctorial yield and produce dyeings and prints with good fastness properties.

Abstract: Reactive dyes of the formula ##STR1## in which D, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are as defined in claim 1, are particularly suitable for dyeing or printing cellulosic fiber materials or naturally occurring or synthetic polyamide fiber materials with a high tinctorial yield, and produce dyeings and prints having good fastness properties.

Abstract: Reactive dyes of the formula ##STR1## in which K and Z are as defined in the disclosure, are suitable in particular for the dyeing and printing of cellulose-containing fibre material and produce dyeings and prints having good fastness properties in high coloristic yield.

Abstract: A water-soluble monoazodye having the following formula (I) in its free acid form: ##STR1## wherein X is --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 W wherein W is a leaving group removable by alkali; R.sup.1 is methyl, --NHCONH.sub.2 or --NHCOT.sup.1 wherein T.sup.1 is methyl, ethyl, --CH.sub.2 CH.sub.2 COOH or --CH.dbd.CHCOOH; R.sup.2 is hydrogen, lower alkyl or lower alkoxy;and Z is ##STR2## wherein P is cyano or halogen, each of Q and U which are independent of each other, is halogen, V is halogen or ##STR3## and Y is halogen or a group of the following formula (1) or (2): ##STR4## wherein R.sup.3, A, R.sup.4 and E are as defined in the disclosure and G is as defined above, has a moderate yellow to orange color and is particularly suitable for dyeing cellulose fibers or nitrogen-containing fibers.