Abstract: Improvement in a process for producing an arylazo-aminonaphtholsulfonic acid represented by a free acid of the formula, ##STR1## wherein A is a phenyl or naphthyl group unsubstituted or substituted by one to four members selected from alkyl, alkoxy, phenoxy, sulfonic acid, carboxylic acid, arylamino, amino, nitro and hydroxyl groups and halogen atoms, and m is 0 or 1, which comprises reacting an aminonaphtholsulfonic acid represented by a free acid of the formula, ##STR2## wherein m is as defined above, with a dibasic acid anhydride to obtain an acylaminonaphtholsulfonic acid, coupling a diazonium compound of amine of the formula,A'--NH.sub.

Abstract: A monoazo compound of the following formula in a free acid form, ##STR1## wherein R.sub.1, R.sub.2 and R.sub.4 are independently hydrogen or lower alkyl, R.sub.3 is lower alkyl, acyl or (sulfo)- phenyl, R.sub.5 is hydrogen or sulfo, B is (sulfo)phenylene or sulfonaphthylmethylene, X is chlorine, fluorine, phenoxy or (substituted)amino, A is (substituted)phenylene or (substituted)naphthylene, and Z is --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 by the action of an alkali, which meets requirements of high degree in a dye industry with respect to dyeing properties such as build-up property and fastness properties such as formalin fastness, formalin-light fastness.

Abstract: A yellow dye-donor element for thermal dye transfer and having good characteristics for ink formation, and a thermal transfer sheet made using the yellow dye-element, having adequate sublimatability or vaporizability, good coloring, with a high printing density on receiving papers, and high storage stability and light stability of printing image, and employable as a yellow color among the three primary colors are provided. The above yellow color-element comprises a yellow dye dispersed or dissolved in a polymeric binder, which is represented by the formula (I): ##STR1## wherein R.sub.1 is an alkyl group of C.sub.1 -C.sub.12, an allyl group or a crotyl group; X is hydrogen, halogen or a C.sub.1 -C.sub.4 lower alkyl or C.sub.1 -C.sub.4 lower alkoxy group; Y is a C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.7 cycloalkyl, C.sub.1 -C.sub.4 alkoxy, phenyl, tolyl, or phenoxy group; and A is --CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 O--, or --CH.sub.2 CH.sub.2 CH.sub.2 --.

Abstract: A monoazo compound represented by the following formula in a free acid form, ##STR1## wherein A is phenylene unsubstituted or substituted with methyl, methoxy, chloro, carboxy or sulfo, or naphthylene unsubstituted or substituted with sulfo, R.sub.1 and R.sub.2 are independently hydrogen, chloro, methyl, nitro, carboxy or sulfo, excepting the case where both R.sub.1 and R.sub.2 are hydrogen, and X is --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 Y in which Y is a splittable group by the action of an alkali, which is useful for dyeing or printing fiber materials in a deep red color, and an aqueous liquid product of which is stable chemically and physically, even when stored for a long period of time.

Abstract: A triazine compound having at least one symtriazine moiety of the following formula, ##STR1## wherein R is hydrogen or unsubstituted or substituted alkyl, Y is vinyl or --CH.sub.2 CH.sub.2 L in which L is a group splittable by the action of an alkali, and Z is phenylene or naphthylene unsubstituted or substituted once by sulfo, which is useful for dyeing or printing fiber materials to give dyed or printed products of excellent fastness properties with superior dye performance, even when dyebath conditions including temperatures, pH, amounts of an inorganic salt and bath ratio are varied to some extent.

Abstract: A dioxazine compound represented by the following formula (I) in the free acid form, ##STR1## wherein R is hydrogen, halogeno, alkyl, alkoxy or sulfo, V is a direct linkage or ##STR2## in which R.sub.4 is hydrogen or alkyl, X is a direct linkage or an aliphatic, araliphaatic or aromatic bridging group, B.sub.1 and B.sub.2 independently of one another are each phenylene or naphthylene, Y.sub.1 and Y.sub.2 independently of one another are each --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 Z in which Z is a group splittable by the action of an alkali, and R.sub.1, R.sub.2 and R.sub.3 independently of one another are each hydrogen or alkyl, which is useful for dyeing or printing fiber materials such as cellulose fiber materials to give dyed or printed products of a deep blue color superior in fastness properties.

Abstract: A formazan reactive blue dye represented by a free acid of the formula, ##STR1## wherein X.sub.1 and X.sub.2 are each a hydrogen atom, a methyl, methoxy or sulfonic acid group, m and l are each an integer of 0 or 1 and n is an integer of 0 to 2, provided that the sum of m, n and l is 2 or 3. This dye is usable for dyeing cellulose fibers in a brilliant blue color with good fastness, particularly, against chlorine, light and perspiration-light, as well as good white dischargeability.

Abstract: A monoazo compound, or a salt thereof, of the formula, ##STR1## wherein W is a hydrogen atom or a carbamoyl group, R.sub.1 is a lower alkyl group, R.sub.2 and R.sub.3 are independently a hydrogen atom or a lower alkyl group, A is an unsubstituted or substituted phenylene or naphthylene group, Y is --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 Z, in which Z is a group capable of being split by the action of an alkali, and X is an aromatic or aliphatic group substituted with one or two members selected from sulfonic acid group and carboxylic acid group, which is useful for dyeing fiber materials to give dyed products of a characteristic yellow color excellent in various fastness properties.

Abstract: A compound, or a salt thereof, represented by the following formula, ##STR1## wherein A is a substituted or unsubstituted phenylene or naphthylene group, B is ##STR2## in which R.sub.3 is a hydrogen atom or a lower alkyl, lower alkoxy, acylamino or ureido group, and R.sub.4 is a hydrogen atom or a lower alkyl or lower alkoxy group, R.sub.1 and R.sub.3 are independently a hydrogen atom or a substituted or unsubstituted lower alkyl group, X is a substituted or unsubstituted amino, lower alkoxy, substituted phenoxy or sulfo group, Y is --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 Z, in which Z is a group capable of being split by the action of an alkali, and m is 2 or 3, which is useful for dyeing hydroxyl group- or amide group-containing fiber materials to give dyed products of a brown color having excellent fastness properties with good build-up property.

Abstract: A phthalocyanine compound represented by the following formula, ##STR1## wherein Pc is a metal-containing or metal-free phthalocyanine residue, R.sup.1 is a hydrogen atom or substituted or unsubstituted lower alkyl group, A is a substituted or unsubstituted phenylene or naphthylene group, Y is --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 Z, in which Z is a splittable group by the action of an alkali, W is a bridging group of the following formula, ##STR2## in which R.sup.2 and R.sup.3 are independently a hydrogen atom or a methyl or ethyl group, and n is an integer of from 2 through 6, X is a halogen atom, a is 0 or a number of not more than 2 (0.ltoreq.a.ltoreq.2), and b and c are independently a number of 1 through 3 (1.ltoreq.b.ltoreq.3, 1.ltoreq.c.ltoreq.3), provided that the total of a, b and c is not more than 4 (a+b+c.ltoreq.

Abstract: A brown reactive dye represented by a free acid of the formula, ##STR1## wherein R is a hydrogen atom or a C.sub.1 to C.sub.4 alkyl group, X is --SO.sub.2 CH.sub.2 CH.sub.2 Cl, --SO.sub.2 CH.dbd.CH.sub.2, --SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H or --SO.sub.2 CH.sub.2 CH.sub.2 OPO.sub.3 H.sub.2, rings A, B and C are each a benzene or naphthalene ring which may have other substituent, m is 0 to 3 and n is 0 to 1.This dye is suitable for dyeing cellulose fibers brown to afford dyeings superior in fastnesses, acid stability, build-up property and level dyeing property.

Abstract: A compound, or a salt thereof, represented by the formula, ##STR1## wherein X is a halogen atom, Y is a group of --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 Z (in which Z is a group capable of being split by the action of an alkali), A is an unsubstituted or substituted phenylene or naphthylene group, B is a cycloalkylene group of the formula, ##STR2## an arylene group of the formula, ##STR3## or an alkylene of the formula --(CH.sub.2).sub.1 --, (in which R.sub.3 and R.sub.4 are independently a hydrogen atom or a methyl, ethyl or methoxy group, n is 0, 1 or 2 and 1 is an integer of 2 to 6), R.sub.1 and R.sub.

Abstract: A compound of the formula, ##STR1## wherein D is an organic dye moiety, R.sub.1 and R.sub.2 are independently hydrogen or a substituted or unsubstituted lower alkyl group, R.sub.3 is hydrogen or a substituted or unsubstituted lower alkyl, phenyl or naphthyl group, X.sub.1 and X.sub.2 are independently hydrogen, halogen or a lower alkyl, cyano, carbamoyl, vinyl, .beta.-hydroxyethyl, .beta.-sulfoethyl, .beta.-sulfatoethyl, carboxyl, carboxylic acid ester or sulfonic acid group, and Z is appended to the above-defined D or R.sub.3 and stands for --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 Y, in which Y is a group capable of being split by the action of an alkali, which is useful for dyeing hydroxyl or amido group-containing fiber materials with excellent build-up properties, thereby giving dyed products having excellent various fastness properties.

Abstract: A pyridone compound of the following formula, or a salt thereof, ##STR1## wherein R.sub.1 and R.sub.2 are independently a hydrogen atom or a lower alkyl group having up to 4 carbon atoms, X is a hydrogen atom or a methyl or sulfo group, A is an unsubstituted or substituted phenylene or naphthylene group, and Y is --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 Z, in which Z is a group capable of being split by the action of an alkali. The compound is useful for dyeing or printing fiber materials to give a dyed product of a brilliant yellow color excellent in various fastness properties with good reproducibility.

Abstract: A compound which is represented by a free acid of the following formula, ##STR1## wherein X is hydrogen, halogen, alkyl or cyano, R.sub.1, R.sub.2 and R.sub.3 are independently hydrogen or alkyl, R.sub.4 is alkyl, W is alkylene, cycloalkylene or arylene, Q is --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 L in which L is a group capable of being splitted by the action of an alkali, D is a benzene or naphthalene ring, l and m are independently a number of not less than 0 but not more than 3, and n is a number of more than 0 but not more than 3, provided that l, m and n satisfy 0<l+m+n.ltoreq.4, and which is useful for dyeing fiber materials a blue color with a good build-up property to give a dyed product having excellent fastness properties.

Abstract: Cellulose fiber materials are dyed with a dye represented by a free acid of the formula, ##STR1## wherein W.sub.1 and W.sub.2 are independently a direct linkage or a bridging group, Q.sub.1 and Q.sub.2 are independently a fiber-reactive group, A.sub.1 and A.sub.2 are independently a phenylene or naphthylene group unsubstituted or substituted, D is a residue of 1-amino-8-naphthol mono- or di-sulfonic acid, m and n are independently 0, 1 or 2, provided that they satisfy the formula, 0<m+n.ltoreq.2, and each sulfo group appended to A.sub.1 and A.sub.2 is located at the carbon atom adjacent to the azo group, and then finished with a finishing agent capable of bonding with cellulose through a bridge formation, thereby obtaining dyed and finished products excellent in anticrease and shrinkproofing properties as well as various fastness properties such as light fastness, perspiration light fastness and chlorine fastness without any color change.

Abstract: A reactive dye composition comprising at least one alkylnaphthalenesulfonic acid/formaldehyde condensate and a compound represented by the following formula, ##STR1## wherein D is an organic dye residue having at least one sulfo group, R.sub.1 and R.sub.2 are independently a hydrogen atom or a C.sub.1 to C.sub.4 alkyl group unsubstituted or substituted with a halogen atom or a hydroxy, cyano, alkoxy, carboxy, carbamoyl, alkoxycarbonyl, alkylcarbonyloxy, sulfo or sulfamoyl group, A is a phenylene group unsubstituted or substituted with one or two substituents selected from chlorine and bromine atoms and methyl, ethyl, methoxy, ethoxy and sulfo groups, or a naphthylene group unsubstituted or substituted with one sulfo group, X is a halogen atom, and Y is --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.

Abstract: A compound represented by a free acid of the formula: ##STR1## wherein D is ##STR2## (R.sub.1 and R.sub.2 independently represent hydrogen, methyl or methoxy) or ##STR3## (n is 0 or 1, the mark * signifies the position of linkage to --N.dbd.N-- and the mark # signifies the position of linkage to Q mentioned below); Q is --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 R (R is a group capable of being split off by the action of alkali); one of X.sub.1 and X.sub.2 is hydrogen and the other is a sulfonic acid group; and m is 0 or 1, which is useful for dyeing cellulose fibers a blue-black color with good dyeability and excellent fastnesses, particularly chlorine fastness.

Abstract: A monoazo compound which is useful for dyeing or printing fiber materials, particularly cellulose fiber materials in red color, and which is represented by a free acid of the formula, ##STR1## wherein D is a phenyl group substituted with one to three substituents selected from the group consisting of halogen atoms and methyl, ethyl, methoxy, ethoxy, acetylamino, propionylamino, sulfo and carboxyl groups, R is a C.sub.1 to C.sub.4 alkyl group unsubstituted or substituted with a halogen atom or a hydroxyl, cyano, alkyl, alkoxy, carboxyl, carbamoyl, alkoxycarbonyl or sulfo group, A is a phenylene group unsubstituted or substituted with one or two substituents selected from the group consisting of methyl, ethyl, methoxy, ethoxy and sulfo groups and chlorine and bromine atoms, or a naphthylene group unsubstituted or substituted with one sulfo group, and X is --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 Y in which Y is a group capable of being split by the action of an alkali.

Abstract: A phthalocyanine compound which is represented by a free acid of the following formula, ##STR1## wherein Pc is a metal-free or metal-containing phthalocyanine residue, W is a group of ##STR2## in which R' and R" are independently a hydrogen atom or a methyl or ethyl group, and n is an integer of from 2 to 6, R is an unsubstituted or substituted lower alkyl group, A is an unsubstituted or substituted phenylene or naphthylene group, Y is a group of --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 Z in which Z is a group capable of being split by the action of an alkali, a is a positive number of from 1 to 3, and b and c are independently a positive number of from 0 to 3, provided that a, b and c statisfy 0<a+b+c.ltoreq.4, and which is useful for dyeing or printing fiber materials, particularly cellulose fiber materials, to give a dyed or printed product of a brilliant turquoise blue color excellent in various fastness, particularly light fastness and wet fastness.