POLYAZO COMPOUND HAVING TWO VINYLSULFONE TYPE FIBER REACTIVE GROUPS

Abstract: A polyazo compound of the following formula, wherein F is a bisazo or trisazo dye moiety, R₁, R₂ and R₃ are independently of one another are each hydrogen or alkyl, B₁ and B₂ independently of one another are each phenylene or naphthylene, Y₁ and Y₂ independently of one another are each -CH=CH₂ or -CH₂CH₂L in which L is a splittable group, which is useful for dyeing or printing fiber materials to give dyed or printed products with superior dye performance such as build-up property.

Description: The present invention relates to a polyazo compound, a process for producing the same and a process for dyeing or printing fiber materials. More specifically, the present invention relates to a polyazo compound having two vinylsulfone type fiber reactive groups in the molecule, which is particularly useful for dyeing or printing fiber materials. Polyazo fiber reactive dyes have been extensively used for dyeing or printing fiber materials such as cellulose fibers and polyamide fibers. Of these, so-called vinylsulfone type fiber reactive dyes are prominent because of their superior dye performance. For example, bisazo reactive dyes of this kind are known in the specifications of U.S. Patent Nos. 4,412,948, 4,663,440, 4,551,150 and 4,698,421. Moreover, reactive dyes having two vinylsulfone fiber reactive groups a molecule are disclosed in "Kagaku to Kougyo (Science and Industry), Vol. 42, No. 11, page 583 (1968); e.g. a compound of the following formula: EP-A-0 076 782 discloses reactive dyes represented by the formula, wherein D is the residue of a sulfo group-containing organic dye of the series mono or polyazo, metal-complex-azo, anthraquinone, phthalocyanine, formazane, azomethine, dioxazine, phenazine, stilbene, triphenylmethane, xanthene, thioxanthone, nitroaryl, naphthoquinone, pyrenquinone or perylene tetracarbimide, R is hydrogen or optionally substituted C₁-C₄-alkyl; A is an optionally substituted aliphatic or aromatic bridging unit: Y is -CH=CH₂ or -CH₂CH₂X in which X is a group splittable by an alkali: Z is hydrogen or an optionally substituted hydrocarbon: and R₁ and R₂ are each independently of one another hydrogen or an optionally substituted hydrocarbon. In recent years, however, needs for the dye performance became severe from technical and economical points of view in the industry, and there are recognized many problems to be solved, for example, with respect to dyeing performance such as build-up property which is one of fundamental properties required for the reactive dyes. The object underlying the present invention is to provide new polyazo compounds meeting such severer needs for the dye performance having certain chromophores, kinds and numbers of fiber reactive groups, and manners of linking the chromophores and the fiber reactive groups. The present invention provides polyazo compounds of the following formula (I), wherein R₁, R₂ and R₃ independently of one another are each hydrogen or unsubstituted or substituted alkyl, B₁ and B₂ independently of one another are each unsubstituted or substituted phenylene or naphthylene, and Y₁ and Y₂ independently of one another are each -CH=CH₂ or -CH₂CH₂L in which L is a group splittable by the action of an alkali, and F is a polyazo dye moiety selected from the group consisting of those represented by the following formulas (1), (2), (3) and (4) each in free acid form, the formula (1) being wherein R₄ is hydrogen, chloro, methyl, methoxy, ethyl, ethoxy, nitro or carboxy, R₅ is hydrogen, methyl, methoxy, ethyl, ethoxy or sulfo, R₆ is hydrogen, methyl, methoxy, ethyl, ethoxy, acetylamino, ureido or sulfo, m is 1, 2 or 3 and n is 0 or 1, the formula (2) being wherein R₇ is hydrogen, methyl, methoxy, ethyl, ethoxy, chloro, carboxy or sulfo, R₈ and R₉ independently of one another are each hydrogen, methyl, methoxy, ethyl, ethoxy, chloro, bromo, acetylamino, sulfamoyl or carbamoyl and p and q independently of one another are each 0, 1 or 2, r is 0 or 1, the formula (3) being wherein R₁₁ is hydrogen, chloro, C 1-4 alkyl, C 1-4 alkoxy, nitro or carboxy, R₁₂ and R₁₄ independently of one another are each hydrogen, C 1-4 alkyl, C 1-4 alkoxy or sulfo, R₁₃ and R₁₅ independently of one another are each hydrogen, C 1-4 alkyl, C 1-4 alkoxy, C 2-5 alkanoylamino, benzoylamino, ureido or sulfo, t is 1, 2 or 3 and u is 0 or 1, and the formula (4) being A-N=N-D-N=N-E- (4) wherein A is sulfonaphthyl or sulfophenyl represented by the following formulas (a) and (b) each in free acid form, respectively, wherein R₁₆ is hydrogen, C 1-4 alkyl or C 1-4 alkoxy, w is 2 or 3 and x is 1 or 2, D is sulfonaphthylene or phenylene represented by the following formulas (c) and (d) each in free acid form, respectively, wherein the linkages marked by * and ** bond to A-N=N- and -N=N-E, respectively, R₁₇ is hydrogen, methoxy or sulfo, R₁₈ is hydrogen, C 1-4 alkyl, C 1-4 alkoxy or sulfo, and R₁₉ is hydrogen, C 1-4 alkyl, C 1-4 alkoxy, C 2-5 alkanoylamino, benzoylamino, ureido or C 1-4 alkylsulfonylamino, and E is sulfonaphthylene or phenylene represented by the following formulas (e) and (f) each in free acid form, respectively, wherein the linkage marked by *** and **** bond to the azo and respectively, R₂₀ is hydrogen, C 1-4 alkyl, C 1-4 alkoxy or sulfo, and R₂₁ is hydrogen, C 1-4 alkyl, C 1-4 alkoxy, C 2-5 alkanoylamino, benzoylamino, ureido or C 1-4 alkylsulfonylamino, provided that at least two of A, D and E are the sulfonaphthyl or sulfonaphthylene represented by the formulas (a), (c) and (e). The present invention also provides a process for producing the polyazo compounds of the formula (I), which comprises reacting a cyanuric halide, an amine compound of the following formula (II), wherein R₂, B₁ and Y₁ are as defined above, another amine compound of the following formula (III), wherein R₃, B₂ and Y₂ are as defined above, and three or four compounds capable of being diazotized and/or coupled to form the desired polyazo compound. The present invention also provides a process for dyeing or printing fiber materials, which comprises using the polyazo compound of the formula (I). In the above bisazo dye moiety of the formula (4), particularly preferred is a case where R₁₆ is hydrogen, methyl, ethyl, methoxy or ethoxy, R₁₇ is hydrogen, R₁₈ is hydrogen, methyl, methoxy or sulfo, R₁₉ is methyl, methoxy, acetylamino or ureido, R₂₀ is hydrogen, methyl, methoxy or sulfo, and R₂₁ is methyl, methoxy, acetylamino or ureido. When R₁ is hydrogen, E is preferably 8-sulfonaphthylene. In the above trisazo dye moiety of the formula (3), particularly preferred is a case where R₁₁ is hydrogen, R₁₂ and R₁₄ independently of one another are each hydrogen, methyl, ethyl, methoxy, ethoxy or sulfo, and R₁₃ and R₁₅ independently of one another are each hydrogen, methyl ethyl, methoxy, ethoxy, acetylamino, ureido or sulfo. The alkyl represented by R₁, R₂ and R₃ may be unsubstituted or substituted with hydroxy, cyano, CC 1-4 alkoxy, halogeno, carboxy, carbamoyl, C 1-4 alkoxycarbonyl, C 1-4 alkylcarbonyloxy, sulfo or sulfamoyl groups. Examples of the alkyl are as those described in, for example, JP-A-122549/1984. Of these, preferred are methyl or ethyl. In the present invention, preferable R₁ is hydrogen or methyl, and preferable R₂ and R₃ independently of one another are each hydrogen, methyl or ethyl. More preferable is a case where R₁ is hydrogen, and any one of R₂ and R₃ is hydrogen. The phenylene represented by B₁ and B₂ may be unsubstituted or substituted with one or two substituents. Examples of the substituents are methyl, ethyl, methoxy, ethoxy, chloro, bromo, nitro, sulfo and carboxy. The naphthylene represented by B₁ and B₂ may be unsubstituted or substituted by one sulfo. Preferred examples of these phenylene and naphthylene are as those described in JP-A-122549/1984. In the present invention, most preferred are phenylene and naphthylene unsubstituted or substituted by at most one substituent. The symbol L in -CH₂CH₂L which is represented by Y₁ and Y₂ includes those known as a group capable of being split by the action of an alkali. Examples thereof are sulfato, thiosulfato, acetoxy, phosphato, chloro and the like. In the present invention, preferred is a case where Y₁ and Y₂ are both β-sulfatoethyl, which includes vinyl at a small extent. The polyazo compound (I) can be produced in a manner known per se using a cyanuric halide such as cyanuric chloride, fluoride and the like, an amine compound of the formula (II), another amine compound of the formula (III), and starting compounds capable of forming a polyazo dye. For the production of the polyazo compound having the respective dye moieties of the formulas (1), (2) and (4), the starting compounds include those represented by the following formulas (IV), (V) and (VI) each in free acid form, respectively, wherein R₁, R₄, R₇, R₈, A, m, p and r are as defined above, wherein R₅, R₆ and D are as defined above, and wherein R₁, R₉, E, n and q are as defined above, provided that the group, is present in any one of the group represented by the formulas (V-1) and (V-3), and for the production of the polyazo compound having the dye moiety of the formula (3), the starting compounds include a compound of the following formula (VII) in the free acid form, wherein R₁₁ and t are as defined above, a compound of the following formula (VIII), wherein R₁₂ and R₁₃ are as defined above, a compound of the following formula (IX), wherein R₁₄ and R₁₅ are as defined above, and a compound of the following formula (X) in the free acid form, wherein R₁ and u are as defined above. In the production of the desired bisazo compound having the dye moiety of the formulas (1) and (4), the compounds of the formula (IV-1) and (VI-1) are first diazotized, followed by coupling with the compounds of the formulas (IV-2) and (VI-2), respectively, thereby obtaining respective monoazo intermediate compound. The monoazo intermediate compounds are then diazotized, followed by coupling with the compounds of the formulas (IV-3) and (VI-3), respectively, thereby obtaining the respective bisazo intermediate compounds. In the production of the desired bisazo compound having the dye moiety of the formula (2), the compound of the formula (V-1) is first diazotized, followed by coupling with the compound of the formula (V-2), thereby obtaining the monoazo intermediate compound. Successively, the compound of the formula (V-3) is diazotized, followed by coupling with the above monoazo intermediate compound, thereby obtaining the bisazo intermediate compound. The bisazo intermediate compound obtainable in the manners described above can be subjected to condensation reaction with a cyanuric halide and both amines of the formulas (II) and (III) to obtain the desired bisazo compound. In the production of the desired trisazo compound, the starting compounds of the formulas (VII), (VIII) and (IX) are subjected to diazotization and coupling reactions to obtain a bisazo intermediate compound. On the other hand, the compound of the formula (X) and both amines of the formulas (II) and (III) are subjected to condensation reactions with a cyanuric chloride in an optional order to obtain a desired condensate. Successively, the bisazo intermediate compound is diazotized, followed by coupling with the above condensate, whereby the desired trisazo compound can be obtained. In the above manners, the diazotization, coupling and condensation can be carried out under reaction conditions well known by persons skilled in this art. Examples of the compounds (IV-1), (V-1), (V-3) and (VI-1) are 1-aminobenzene-2-, 3- or 4-sulfonic acid, 2-amino-4- or 5-sulfobenzoic acid, 4-amino-2-sulfobenzoic acid, 4-aminotoluene-2- or 3-sulfonic acid, 2-aminotoluene-4- or 5-sulfonic acid, 2-aminoanisole-4- or 5-sulfonic acid, 4-aminoanisole-2- or 3-sulfonic acid, 3- or 4-chloro-2-aminotoluene-5-sulfonic acid, 5-chloro-2-aminotoluene-3- or 4-sulfonic acid, 6-chloro-2- or 3-aminotoluene-4-sulfonic acid, 1-aminobenzene-2,5-, 2,4- or 3,5-disulfonic acid, 2-aminotoluene-3,5-, 4,5- or 4,6-disulfonic acid, 4-aminotoluene-2,5-disulfonic acid, 2-aminonaphthalene-5-, 6-, 7- or 8-sulfonic acid, 1-aminonaphthalene-2-, 3-, 4-, 5-, 6-, 7- or 8-sulfonic acid, 2-aminonaphthalene-4,8-, 6,8-, 1,5-, 1,7-, 5,7-, 3,6-, 3,7- or 4,7-disulfonic acid, 1-aminonaphthalene-2,4-, 2,5-, 3,6-, 3,7-, 3,8-, 4,6-, 4,7-, 4,8-, 5,7- or 6,8-disulfonic acid, 2-aminonaphthalene-3,6,8-, 4,6,8- or 1,5,7-trisulfonic acid and 1-aminonaphthalene-2,4,7-, 2,4,8-, 3,5,7-, 3,6,8- or 4,6,8-trisulfonic acid. Additional examples of the above compounds and their masked compounds are 4-acetylamino-2-aminobenzenesulfonic acid, 2,4-diaminobenzene-1,5-disulfonic acid, 2,4-, or 2,5-diaminobenzenesulfonic acid, 2,5-diaminobenzene-1,4-disulfonic acid, 2,4-diamino-5-methylbenzenesulfonic acid, 2-amino-4-aminomethyl- or N-methylaminomethyl-benzenesulfonic acid, 2-amino-5-aminomethylnaphthalene-1-sulfonic acid and 2-amino-5-aminomethylnaphthalene-1,7-disulfonic acid. Of these, preferred are those having a substituent, particularly those having sulfo, at the position neighboring to the amino group, when those compounds are used as a diazo component. Examples of the compounds (IV-2) and (VI-2) are aniline, 3-methyl-, chloro-, methoxy-, ureido-, acetylamino-, benzoylamino-, carboxyethylcarbonylamino- or acryloylamino-aniline, 2,5-dimethyl-, diethyl-, dimethoxy- or diethoxy-aniline, 5-methyl-2-methoxyaniline, 5-acetyl-2-methylaniline, 4-acetylamino-2-aminobenzenesulfonic acid, 1-aminonaphthalene, 1-aminonaphthalene-2-, 6- or 7-sulfonic acid, 1-amino-2-methoxy or ethoxynaphthalene-6- or 7-sulfonic acid, 2-methyl or methoxyaniline, 2,3- or 3,5-dimethylaniline and 2-methoxy-5-acetylaminoaniline. Examples of the compound (V-2) are 1-amino-8-naphthol-3,6-disulfonic acid and 1-amino-8-naphthol-4,6-disulfonic acid. Examples of the compounds (IV-3) and (VI-3) are aniline, 3-chloro, methyl-, ureido-, acetylamino-, methoxy- or benzoylamino-aniline, 2,5-dimethylaniline, 2,5-dimethoxyaniline, 5-methyl-2-methoxyaniline, 5-acetylamino-2-methylaniline, 4-acetylamino-2-aminobenzenesulfonic acid, 1-aminonaphthalene-6- or 7-sulfonic acid, 2- or 3-amino-5-naphthol-7-sulfonic acid, 2-amino-8-naphthol-4,6-disulfonic acid, 1-amino-5-naphthol-7-sulfonic acid, 1-aminonaphthalene-8-sulfonic acid, 2- or 3-methylamino-5-naphthol-7-sulfonic acid, 2-amino-5-naphthol-1,7-disulfonic acid, 1-amino-8-naphthol-3,6- or 4,6-disulfonic acid, 2-methyl or methoxyaniline, 1-amino-2-methoxy-5-acetylaminobenzene, N-methyl- or ethyl-aniline and 3-methyl-N-methyl- or ethyl-aniline. Examples of the compound (VII) are 1-aminobenzene-2-, 3- or 4-sulfonic acid, 2-amino-4- or 5-sulfobenzoic acid, 4-amino-2-sulfobenzoic acid, 4-aminotoluene-2- or 3-sulfonic acid, 2-aminotoluene-4- or 5-sulfonic acid, 2-aminotoluene-4-carboxylic acid, 3-amino-4-chlorobenzenesulfonic acid, 2-aminoanisole-4- or 5-sulfonic acid, 4-aminoanisole-2- or 3-sulfonic acid, 3- or 4-chloro-2-aminotoluene-5-sulfonic acid, 5-chloro-2-aminotoluene-3- or 4-sulfonic acid, 6-chloro-2- or 3-aminotoluene-4-sulfonic acid, 1-aminobenzene-2,5-, 2,4- or 3,5-disulfonic acid, 2-aminotoluene-3,5-, 4,5- or 4,6-disulfonic acid, 4-aminotoluene-2,5-disulfonic acid, 2-aminonaphthalene-5-, 6-, 7- or 8-sulfonic acid, 1-aminonaphthalene-2-, 3-, 4-, 5-, 6-, 7-or 8-sulfonic acid, 2-aminonaphthalene-4,8-, 6,8-, 1,5-, 1,7-, 5,7-, 3,6-, 3,7- or 4,7-disulfonic acid, 1-aminonaphthalene-2,4-, 2,5-, 3,6-, 3,7-, 3,8-, 4,6-, 4,7-, 4,8-, 5,7-, or 6,8-disulfonic acid, 2-aminonaphthalene-3,6,8-, 4,6,8- or 1,5,7-trisulfonic acid and 1-aminonaphthalene-2,4,7-, 2,4,8-, 3,5,7-, 3,6,8- or 4,6,8-trisulfonic acid. Examples of the compounds (VIII) and (IX) are aniline, 3-methyl-, methoxy, ureido-, acetylamino-, benzoylamino-, β-carboxyethylcarbonylamino- or acryloylamino-aniline, 2,5-dimethyl-, diethyl-, dimethoxy- or diethoxy-aniline, 5-methyl-2-methoxy- or ethoxy-aniline, 5-acetyl-2-methylaniline, 4-acetylamino-2-aminobenzene-sulfonic acid, 1-aminonaphthalene, 1-aminonaphthalene-2-, 6- or 7-sulfonic acid, 1-amino-2-methoxy or ethoxynaphthalene-6- or 7-sulfonic acid, 2-methyl or methoxyaniline, 2,3- or 3,5-dimethylaniline and 1-amino-2-methoxy-5-acetylaminoaniline. Examples of the compound (X) are 1-amino-8-naphthol-3,6- or 4,6-disulfonic acid, 2-amino-8-naphthol-3,6-disulfonic acid, 2- or 3-amino-5-naphthol-7-sulfonic acid, 2-amino-5-naphthol-1,7-disulfonic acid and 2- or 3-methylamino-5-naphthol-7-sulfonic acid. All the starting compounds described above may be used in the form of a free acid or a salt such as alkali metal and alkaline earth metal salt depending on the reaction conditions. After completion of the reaction, the desired polyazo compound-containing reaction mixture may be formed into a liquid commercial product, if desired, after removing inorganic salts and with addition of a stabilizer or a dyeing improver. The liquid product obtained or the aforesaid reaction mixture may be subjected to evaporation or spray-drying, thereby obtaining a powdery commercial product. Alternatively, according to a conventional manner, the reaction mixture may formed into either a liquid or powdery commercial product through salting-out using an electrolyte. The polyazo compound (I) in accordance with the present invention may be in the form of a free acid or preferably in the form of alkali metal or alkaline earth metal salt such as sodium or potassium salt. The polyazo compound (I) of the present invention is fiber-reactive and useful for dyeing or printing hydroxyl group-containing and amide group-containing materials in a fibrous form including unmixed or mixed fiber spinning. The hydroxyl group-containing materials include natural or synthetic hydroxyl group-containing materials such as cellulose fiber materials, cellulose-containing fiber materials, regenerated products thereof and polyvinyl alcohol. Examples of the cellulose fiber materials are cotton and other vegetable fibers such as linen, hemp, jute and ramie fibers. Examples of the regenerated cellulose fibers are viscose staple and filament viscose. Examples of the cellulose containing fiber materials are mixed fiber materials such as cellulose/polyester, cellulose/wool and cellulose/acryl. The amide group-containing materials include synthetic or natural polyamide and polyurethane. Examples of the materials, particularly in the fibrous forms, are wool and other animal furs, silk, leather, polyamide-6,6, polyamide-6, polyamide-11 and polyamide-4. The dyeing may be carried out in a suitable manner, which can be selected from conventional manners depending on the physical and chemical properties of said fiber materials. For example, cellulose fiber materials can be dyed using the present compound by an exhaustion dyeing, padding including cold batch-up dyeing or printing method. The exhaustion dyeing can be carried out at a relatively low temperature in the presence of an acid binding agent such as sodium carbonate, trisodium phosphate or sodium hydroxide, if desired, using a neutral salt such as sodium sulfate or sodium chloride. In carrying out the printing method, a color paste can be prepared using a stock paste or emulsion paste such as sodium alginate or starch ether. and an alkali such as sodium carbonate, sodium hydrogen-carbonate, sodium trichloroacetate, the corresponding potassium salts and alkali-liberating compounds such as alkaline earth metal compounds, if desired together with a printing auxiliary agent such as urea or a dispersant. Fibers may be printed with the color paste, followed by heat treatment particularly in the presence of steam, thereby performing the desired printing. In the cold-pad-batch-up method, a padding liquor can be prepared using as an acid binding agent sodium hydroxide alone or in a mixture thereof with sodium silicate, sodium carbonate or trisodium phosphate, if desired, together with a hydrotropic agent such as urea or a penetrant. Fibers may be padded with the padding liquor obtained, batched up on a roller, allowed to stand for 3 hours or over night and then subjected to after-treatments such as washing with water and drying, thereby performing the desired padding. The polyazo compound (I) of the present invention can be characterized by excellent dye performance in the dyeing and printing of fiber materials, particularly cellulose fiber materials. The polyazo compound (I) can exhibit high exhaustion and fixing percentages and extremely excellent build-up, level dyeing and washing-off properties, and can give almost no affect on the dyeing even by changes in dyebath conditions such as temperature, bath ratio and concentration of inorganic salts. The polyazo compound (I) can be also characterized by products dyed or printed using it, which products are excellent in fastness properties such as fastness to light, perspiration-light, perspiration, acid-hydrolysis, washing and chlorine. The present invention is illustrated in more detail with reference to the following Examples, which are only illustrative, but not limitative. In Examples, all parts and % are by weight. Example 1 2-Naphthylamine-3,6,8-trisulfonic acid (19.2 parts) was diazotized in a conventional manner, followed by coupling with 5-methyl-2-methoxyaniline (6.85 parts) to obtain a monoazo intermediate compound. On the other hand, 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid (16.0 parts) was subjected to first condensation with cyanuric chloride (9.25 parts), followed by second condensation with 1-aminobenzene-4-β-sulfatoethylsulfone (14.1 parts), and then third condensation with 1-aminobenzene-3-β-sulfatoethylsulfone (14.1 parts) at 60° to 70°C within a pH of 4 to 5, thereby obtaining a condensate. The above monoazo intermediate compound was diazotized in a conventional manner, followed by coupling with the condensate, and the reaction mixture was subjected to salting-out with sodium chloride. The precipitate was collected on a filter, and then dried to obtain a bisazo compound of the following formula in a free acid form. The bisazo compound obtained above (0.3 part) was dissolved in water (200 parts), and cotton (10 parts) and sodium sulfate (8 parts) was added thereto. The bath was heated to 60°C, and then sodium carbonate (4 parts) was added thereto. Dyeing was continued for 1 hour at that temperature. The cotton was washed with water and soaped to obtain a dyed product excellent in fastness properties and dye performances. Even when the dyebath conditions including temperature, bath ratio and salt concentration were varied to some extent, each dyeing showed superior reproducibility. Example 2 Example 1 was repeated, provided that 2-naphthylamine-3,6,8-trisulfonic acid, 5-methyl-2-methoxyaniline, 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid, 1-aminobenzene-4-β-sulfatoethylsulfone and 1-aminobenzene-3-β-sulfatoethylsulfone were replaced by the compounds shown in the columns A, B, C, D and E of the following table, respectively, which are represented by the formulas (IV-1), (IV-2), (IV-3), (II) and (III), respectively, to obtain the corresponding bisazo compound. Using the bisazo compound obtained, dyeing was carried out in the same manner as in Example 1 to obtain a dyed product of a shade as shown in the column F of the following table. Example 3 2,4-Diaminobenzenesulfonic acid (4.70 parts) was condensed with cyanuric chloride (4.61 parts) in a known manner, followed by condensation with 1-aminobenzene-4-β-sulfatoethylsulfone (6.95 parts). The resulting condensate was diazotized in a conventional manner, followed by coupling under strong acid condition with 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid (7.73 parts). The resulting monoazo intermediate compound was coupled with diazonium salt of 2-aminonaphthalene-1,5-disulfonic acid (7.58 parts). Ultimately, the resulting bisazo intermediate compound was condensed with 1-aminobenzene-3-β-sulfatoethylsulfone (6.95 parts) at 70° to 80°C within a pH of 4 to 5. The reaction mixture was salted out with sodium chloride to obtain a bisazo compound of the following formula in a free acid form. The bisazo compound obtained (0.3 part) was dissolved in water (200 parts), and cotton (10 parts) and sodium sulfate (8 parts) were added thereto. The bath was heated to 60°C, and then sodium carbonate (4 parts) was added thereto. Dyeing was continued for 1 hour at that temperature. The cotton taken out was washed with water and then soaped to obtain a dyed product excellent in fastness properties and dye performances. The above dyeing procedure was repeated, provided that dyebath conditions including temperature, bath ratio and salt concentration were varied to some extent, thereby resulting in superior reproducibility. Example 4 Example 3 was repeated, provided that 2-naphthylamine-1,5-disulfonic acid, 2,4-diaminobenzenesulfonic acid, 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid, 1-aminobenzene-4-8-sulfatoethylsulfone and 1-aminobenzene-3-β-sulfatoethylsulfone were replaced by the compounds shown in the columns A, B, C, D and E of the following table, respectively, which are represented by the formulas (V-1), (V-3), (V-2), (II) and (III), respectively, to obtain the corresponding bisazo compound. Using the bisazo compound obtained, dyeing was carried out in the same manner as in Example 3 to obtain a dyed product of a shade as shown in the column F of the following table. Example 5 Example 3 was repeated, provided that 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid was coupled first with diazonium salt of 2-aminonaphthalene-1,5-disulfonic acid, followed by second coupling with diazonium salt of the condensate, thereby obtaining a bisazo compound of the following formula in a free acid form. Using the bisazo compound obtained above, dyeing was carried out in the same manner as in Example 3 to obtain desired results. Example 6 Using the starting compounds as shown in Example 4, Example 5 was repeated to obtain the corresponding bisazo compound, which showed desirable results in dyeing similar to that of Example 3. Example 7 In order to obtain bisazo compounds other than those obtained in Example 6, Example 5 was repeated, provided that 2-naphthylamine-1,5-disulfonic acid, 2,4-diaminobenzenesulfonic acid, 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid, 1-aminobenzene-4-β-sulfatoethylsulfone and 1-aminobenzene-3-β-sulfatoethylsulfone were replaced by the compounds in the columns A, B, C, D and E of the following table, respectively, which represented by the formulas (V-1), (V-3), (V-2), (II) and (III), respectively, thereby obtaining the corresponding bisazo compound, which gave a dyed product of the shade as shown in the column F of the following table. Example 8 2-Naphthylamine-3,6,8-trisulfonic acid (19.2 parts) was diazotized in a usual manner, followed by coupling with 5-methyl-2-methoxyaniline (6.85 parts). The resulting monoazo intermediate compound was diazotized, followed by coupling with 5-methyl-2-ethoxyaniline (7.55 parts), thereby obtaining a bisazo intermediate compound. On the other hand, 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid (16.0 parts) was first condensed with cyanuric chloride (9.25 parts), followed by second condensation with 1-aminobenzene-4-β-sulfatoethylsulfone (14.1 parts) and then third condensation with 1-aminobenzene-3-β-sulfatoethylsulfone (14.1 parts) at 60° to 70°C within a pH of 4 to 5. The resulting condensate was coupled with a diazonium salt of the above bisazo intermediate compound, followed by salting-out with sodium chloride, thereby obtaining a desired trisazo compound of the following formula in a free acid form. The trisazo compound obtained (0.3 part) was dissolved in water (200 parts), and cotton (10 parts) and sodium sulfate (8 parts) were added thereto. The bath was heated to 60°C, and then sodium carbonate (4 parts) was added thereto. Dyeing was contineud for 1 hour at that temperature. The cotton taken out was washed with water and then soaped to obtain a dyed product of a greenish navy blue excellent in fastness properties with excellent dye performance. Even when dyebath conditions including temperature, bath ratio and salt concentration were varied to some extent, each dyeing showed superior reproducibility. Example 9 Example 8 was repeated, provided that 2-naphthylamine-3,6,8-trisulfonic acid, 5-methyl-2-methoxyaniline, 5-methyl-2-ethoxyaniline, 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid, 1-aminobenzene-4-β-sulfatoethylsulfone and 1-aminobenzene-3-β-sulfatoethylsulfone were replaced by the compounds as shown in the columns A, B, C, D, E and F of the following table, respectively, which are represented by the formulas (VII), (VIII), (IX), (X), (II) and (III), to obtain the corresponding trisazo compound, which gave a dyed product of a shade as shown in the column G of the following table. In the table, Q means β-sulfatoethylsulfonyl. Those having vinylsulfonyl, β-chloroethylsulfonyl, β-phosphatoethylsulfonyl or β-acetoxyethylsulfonyl in place of the β-sulfatoethylsulfonyl can give the desired corresponding trisazo compound. Example 10 2-Aminonaphthalene-4,8-disulfonic acid (30.3 parts) was diazotized in a usual manner, followed by coupling with 1-aminonaphthalene-7-sulfonic acid (22.3 parts). The monoazo compound obtained was diazotized in a usual manner, followed by coupling with 1-aminonaphthalene-8-sulfonic acid (22.3 parts). The whole of bisazo intermediate compound obtained was subjected to first condensation with cyanuric chloride (18.5 parts) at 20°C, followed by second condensation with 1-aminobenzene-3-β-sulfatoethylsulfone (57 parts) at 60°C. The reaction mixture was salted out to precipitate crystals, which were isolated to obtain a bisazo compound of the following formula in a free acid form. The bisazo compound obtained above (each 0.1, 0.3 and 0.6 part) was dissolved in water (200 parts), and sodium sulfate (20 parts) and cotton (10 parts) were added thereto. The bath was heated to 70°C, and 30 minutes thereafter, sodium carbonate (3 parts) was added thereto. Dyeing was continued for 1 hour at that temperature. The cotton taken out was washed with water and soaped to obtain a dyed product of dark violet color excellent in fastness properties, particularly fastness to chlorine and perspiration-light. It was found that this compound was high in solubility and exhibited excellent build-up and level-dyeing properties with superior reproducibility. Example 11 2-Aminonaphthalene-4,8-disulfonic acid (30.3 parts) was diazotized in a usual manner, followed by coupling with 3-toluidine (10.7 parts). The resulting monoazo compound was diazotized in a usual manner, followed by coupling with 1-aminonaphthalene-8-sulfonic acid (22.3 parts). The whole of the resulting bisazo intermediate compound was subjected to first condensation with cyanuric chloride (18.5 parts) at 20°C, followed by second condensation with 1-aminobenzene-4-β-sulfatoethylsulfone (28.5 parts) at 50°C, and then third condensation with 1-aminobenzene-3-β-sulfatoethylsulfone (28.5 parts) at 80°C. The reaction mixture was salted out to precipitate crystals, which were isolated to obtain a bisazo compound of the following formula in a free acid form. The bisazo compound obtained above (0.3 part) was dissolved in water (200 parts), and sodium sulfate (20 parts) and cotton (10 parts) were added thereto. The bath was heated to 60°C, and 20 minutes thereafter, trisodium phosphate (3 parts) was added thereto. Dyeing was continued for 1 hour at that temperature. The cotton taken out was washed with water and then soaped to obtain a dyed product of yellowish brown color excellent in fastness properties. Example 12 2-Aminonaphthalene-4,8-disulfonic acid (30.3 parts) was diazotized in a usual manner, followed by coupling with 1-aminonaphthalene-7-sulfonic acid (22.3 parts) also in a usual manner. The resulting monoazo compound was diazotized in a usual manner, followed by coupling with 3-toluidine (10.7 parts). The whole of the resulting bisazo intermediate compound was subjected to first condensation with cyanuric chloride (18.5 parts) at 20°C, followed by second condensation with 1-N-ethylaminobenzene-3-β-sulfatoethylsulfone (31.3 parts) at 50°C, and then third condensation with 1-aminobenzene-3-β-sulfatoethylsulfone (28.5 parts) at 80°C. The reaction mixture was salted out to precipitate crystals, which were isolated to obtain a bisazo compound of the following formula in a free acid form. The bisazo compound obtained above (0.3 part) was dissolved in water (150 parts), and sodium sulfate (10 parts) and cotton (10 parts) were added thereto. The bath was heated to 70°C, and 30 minutes thereafter, sodium carbonate (3 parts) was added thereto. Dyeing was continued for 1 hour at that temperature. The cotton taken out was washed with water and soaped to obtain a dyed product of brown color excellent in fastness properties, particularly fastness to chlorine, light and perspiration-light with superior build-up property. Example 13 2-Aminonaphthalene-4,8-disulfonic acid (30.3 parts) was diazotized in a usual manner, followed by coupling with 1-aminonaphthalene-7-sulfonic acid (22.3 parts) also in a usual manner. The resulting monoazo compound was diazotized in a usual manner, followed by coupling with N-methyl-3-toluidine (12.1 parts). On the other hand, cyanuric chloride (18.5 parts) and 1-N-ethylaminobenzene-4-β-sulfatoethylsulfone (31.3 parts) were allowed to condense each other at 5°C, and the resulting condensate was subjected to first condensation with the bisazo intermediate compound obtained above at 30°C, followed by second condensation with 1-amino-benzene-4-β-sulfatoethylsulfone (28.5 parts) at 80°C. The reaction mixture was salted out to precipitate crystals, which were isolated to obtain a bisazo compound of the following formula in a free acid form. The bisazo compound obtained above (each 0.1, 0.3 and 0.6 parts) was dissolved in water (200 parts), and sodium sulfate (10 parts) and cotton (10 parts) were added thereto. The bath was heated to 60°C, and sodium carbonate (4 parts) was added thereto. Dyeing was continued for 1 hour at that temperature. The cotton taken out was washed with water and soaped to obtain a dyed product of yellowish brown excellent in fastness properties, particularly fastness to chlorine, light and perspiration-light. It was found that the compound was high in solubility and exhibited superior build-up and level-dyeing properties with superior reproducibility. Example 14 In a manner similar to those of Example 10 to 13 using the compounds represented by the formulas (VI-1), (VI-2), (VI-3), (II) and (III) as shown in the following table in place of 2-aminonaphthalene-4,8-disulfonic acid, 1-aminonaphthalene-7-sulfonic acid, 1-aminonaphthalene-8-sulfonic acid and 1-aminobenzene-3-β-sulfatoethylsulfone, which were used in Example 10, respectively, the corresponding bisazo compound was obtained. Dyeing was carried out using the resulting bisazo compound in a manner similar to those of preceding Examples, thereby obtaining a dyed product of the shade as shown in the following table.

Claims: Claims for the following Contracting States: BE, CH, DE, FR, GB, IT, LI, NL, SE A polyazo compound of the following formula (I), wherein R₁, R₂ and R₃ independently of one another are each hydrogen or unsubstituted or substituted alkyl, B₁ and B₂ independently of one another are each unsubstituted or substituted phenylene or naphthylene, and Y₁ and Y₂ independently of one another are each -CH=CH₂ or -CH₂CH₂L in which L is a group splittable by the action of an alkali, and F is a polyazo dye moiety selected from the group consisting of those represented by the following formulas (1), (2), (3) and (4) each in free acid form, the formula (1) being wherein R₄ is hydrogen, chloro, methyl, methoxy, ethyl, ethoxy, nitro or carboxy, R₅ is hydrogen, methyl, methoxy, ethyl, ethoxy or sulfo, R₆ is hydrogen, methyl, methoxy, ethyl, ethoxy, acetylamino, ureido or sulfo, m is 1, 2 or 3 and n is 0 or 1, the formula (2) being wherein R₇ is hydrogen, methyl, methoxy, ethyl, ethoxy, chloro, carboxy or sulfo, R₈ and R₉ independently of one another are each hydrogen, methyl, methoxy, ethyl, ethoxy, chloro, bromo, acetylamino, sulfamoyl or carbamoyl and p and q independently of one another are each 0, 1 or 2, r is 0 or 1, the formula (3) being wherein R₁₁ is hydrogen, chloro, C 1-4 alkyl, C 1-4 alkoxy, nitro or carboxy, R₁₂ and R₁₄ independently of one another are each hydrogen, C 1-4 alkyl, C 1-4 alkoxy or sulfo, R₁₃ and R₁₅ independently of one another are each hydrogen, C 1-4 alkyl, C 1-4 alkoxy, C 2-5 alkanoylamino, benzoylamino, ureido or sulfo, t is 1, 2 or 3 and u is 0 or 1, and the formula (4) being A-N=N-D-N=N-E- (4) wherein A is sulfonaphthyl or sulfophenyl represented by the following formulas (a) and (b) each in free acid form, respectively, wherein R₁₆ is hydrogen, C 1-4 alkyl or C 1-4 alkoxy, w is 2 or 3 and x is 1 or 2, D is sulfonaphthylene or phenylene represented by the following formulas (c) and (d) each in free acid form, respectively, wherein the linkage marked by * and ** bond to A-N=N- and -N=N-E-, respectively, R₁₇ is hydrogen, methoxy or sulfo, R₁₈ is hydrogen, C 1-4 alkyl, C 1-4 alkoxy or sulfo, and R₁₉ is hydrogen, C 1-4 alkyl, C 1-4 alkoxy, C 2-5 alkanoylamino, benzoylamino, ureido or C 1-4 alkylsulfonylamino, and E is sulfonaphthylene or phenylene represented by the following formulas (e) and (f) each in free acid form, respectively, wherein the linkage marked by *** and **** bond to the azo and respectivly, R₂₀ is hydrogen, C 1-4 alkyl, C 1-4 alkoxy or sulfo, and R₂₁ is hydrogen, C 1-4 alkyl, C 1-4 alkoxy, C 2-5 alkanoylamino, benzoylamino, ureido or C 1-4 alkylsulfonylamino, provided that at least two of A, D and E are the sulfonaphthyl or sulfonaphthylene represented by the formulas (a), (c) and (e). A polyazo compound according to Claim 1, wherein R₁, R₂ and R₃ independently of one another are each hydrogen or C 1-4 alkyl. A polyazo compound according to Claim 1, wherein R₁ is hydrogen or methyl, and R₂ and R₃ independently of one another are each hydrogen, methyl or ethyl. A polyazo compound according to Claim 1, wherein B₁ and B₂ independently of one another are each phenylene unsubstituted or substituted once or twice by methyl, methoxy, ethyl, ethoxy, nitro, sulfo, carboxy, chloro or bromo, or naphthylene unsubstituted or substituted once by sulfo. A polyazo compound according to Claim 1, wherein Y₁ and Y₂ are both β-sulfatoethyl. A polyazo compound according to Claim 1, wherein R₁₁ is hydrogen. A polyazo compound according to Claim 1, wherein R₁₂ and R₁₄ independently of one another are each hydrogen, methyl, ethyl, methoxy, ethoxy or sulfo. A polyazo compound according to Claim 1, wherein R₁₃ and R₁₅ independently of one another are each hydrogen, methyl, ethyl, methoxy, ethoxy, acetylamino, ureido or sulfo. A polyazo compound according to Claim 1, wherein R₁₆ is hydrogen, methyl, ethyl, methoxy or ethoxy. A polyazo compound according to Claim 1, wherein R₁₇ is hydrogen. A polyazo compound according to Claim 1, wherein R₁₈ is hydrogen, methyl, methoxy or sulfo, and R₁₉ is methyl, methoxy, acetylamino or ureido. A polyazo compound according to Claim 1, wherein R₂₀ is hydrogen, methyl, methoxy or sulfo, and R₂₁ is methyl, methoxy, acetylamino or ureido. A polyazo compound according to Claim 1, wherein R₁ is hydrogen and E is 8-sulfonaphthylene. A process for producing a polyazo compound of the formula (I) as defined in Claim 1, which comprises reacting a cyanuric halide, an amine compound of the following formula (II), wherein R₂, B₁ and Y₁ are as defined in Claim 1, another amine compound of the following formula (III), wherein R₃, B₂ and Y₂ are as defined in Claim 1, and a starting compound capable of forming a polyazo dye obtainable by coupling reactions of the compounds represented by the following formula (IV-1, 2 and 3), (V-1, 2 and 3) and (VI-1, 2 and 3), each in free acid form, wherein R₁, R₄, R₇, R₈, A, m, p and r are as defined in claim 1, wherein R₅, R₆ and D are as defined in Claim 1, and wherein R₁, R₉, E, n and q are as defined in Claim 1, provided that the group, is present in any one of the group represented by the formulas (V-1) and (V-3), for producing the bisazo compounds having the respective dye moieties of the formulas (1), (2) and (4) as defined in Claim 1, or a member consisting of compounds represented by the following formulas (VII), (VIII), (IX) and (X), wherein R₁₁ and t are as defined in Claim 1, wherein R₁₂ and R₁₃ are as defined in Claim 1, wherein R₁₄ and R₁₅ are as defined in Claim 1, and wherein R₁ and u are as defined in Claim 1, whereby in the production of the desired bisazo compound having the dye moiety of the formulas (1) and (4) as defined in claim 1, the compounds of the formula (IV-I) and (VI-1) are first diazotized, followed by coupling with the compounds of the formulas (IV-2) and (VI-2), respectively, thereby obtaining respective monoazo intermediate compound, and the monoazo intermediate compounds are then diazotized, followed by coupling with the compounds of the formulas (IV-3) and (VI-3), respectively, thereby obtaining the respective bisazo intermediate compounds; or in the production of the desired bisazo compound having the dye moiety of the formula (2) as defined in claim 1, the compound of the formula (V-1) is first diazotized, followed by coupling with the compound of the formula (V-2), thereby obtaining the monoazo intermediate compound, and successively, the compound of the formula (V-3) is diazotized, followed by coupling with the above monoazo intermediate compound, thereby obtaining the bisazo intermediate compound; and whereby in case of the production of the desired trisazo compound having the dye moiety of the formula (3) as defined in claim 1, the starting compounds of the formulas (VII), (VIII) and (IX) are subjected to diazotization and coupling reactions to obtain a bisazo intermediate compound, while on the other hand, the compound of the formula (X) and both amines of the formulas (II) and (III) are subjected to condensation reactions with a cyanuric chloride in an optional order to obtain a desired condensate, and successively, the bisazo intermediate compound is diazotized, followed by coupling with the above condensate, whereby the desired trisazo compound can be obtained. A process for dyeing or printing fiber materials, which comprises using a polyazo compound of the formula (I) as defined in Claim 1. Fiber materials dyed or printed by the process of Claim 15. Claims for the following Contracting State: ES A process for producing a polyazo compound of the following formula (I), wherein R₁, R₂ and R₃ independently of one another are each hydrogen or unsubstituted or substituted alkyl, B₁ and B₂ independently of one another are each unsubstituted or substituted phenylene or naphthylene, and Y₁ and Y₂ independently of one another are each -CH=CH₂ or -CH₂CH₂L in which L is a group splittable by the action of an alkali, and F is a polyazo dye moiety selected from the group consisting of those represented by the following formulas (1), (2), (3) and (4) each in free acid form, the formula (1) being wherein R₄ is hydrogen, chloro, methyl, methoxy, ethyl, ethoxy, nitro or carboxy, R₅ is hydrogen, methyl, methoxy, ethyl, ethoxy or sulfo, R₆ is hydrogen, methyl, methoxy, ethyl, ethoxy, acetylamino, ureido or sulfo, m is 1, 2 or 3 and n is 0 or 1, the formula (2) being wherein R₇ is hydrogen, methyl, methoxy, ethyl, ethoxy, chloro, carboxy or sulfo, R₈ and R₉ independently of one another are each hydrogen, methyl, methoxy, ethyl, ethoxy, chloro, bromo, acetylamino, sulfamoyl or carbamoyl and p and q independently of one another are each 0, 1 or 2, r is 0 or 1, the formula (3) being wherein R₁₁ is hydrogen, chloro, C₁ - ₄ alkyl, C₁ - ₄ alkoxy, nitro or carboxy, R₁₂ and R₁₄ independently of one another are each hydrogen, C₁ - ₄ alkyl, C₁ - ₄ alkoxy or sulfo, R₁₃ and R₁₅ independently of one another are each hydrogen, C₁ - ₄ alkyl, C₁ - ₄ alkoxy, C₂ - ₅ alkanoylamino, benzoylamino, ureido or sulfo, t is 1, 2 or 3 and u is 0 or 1, and the formula (4) being A-N=N-D-N=N-E- (4) wherein A is sulfonaphthyl or sulfophenyl represented by the following formulas (a) and (b) each in free acid form, respectively, wherein R₁₆ is hydrogen, C₁ - ₄ alkyl or C₁ - ₄ alkoxy, w is 2 or 3 and x is 1 or 2, D is sulfonaphthylene or phenylene represented by the following formulas (c) and (d) each in free acid form, respectively, wherein the linkage marked by * and ** bond to A-N=N-and -N=N-E-, respectively, R₁₇ is hydrogen, methoxy or sulfo, R₁₈ is hydrogen, C₁ - ₄ alkyl, C₁ - ₄ alkoxy or sulfo, and R₁₉ is hydrogen, C₁ - ₄ alkyl, C₁ - ₄ alkoxy, C₂ - ₅ alkanoylamino, benzoylamino, ureido or C₁ - ₄ alkylsulfonylamino, and E is sulfonaphthylene or phenylene represented by the following formulas (e) and (f) each in free acid form, respectively, wherein the linkage marked by *** and **** bond to the azo and respectivley, R₂₀ is hydrogen, C₁ - ₄ alkyl, C₁ - ₄ alkoxy or sulfo, and R₂₁ is hydrogen, C₁ - ₄ alkyl, C₁ - ₄ alkoxy, C₂ - ₅ alkanoylamino, benzoylamino, ureido or C₁ - ₄ alkylsulfonylamino, provided that at least two of A, D and E are the sulfonaphthyl or sulfonaphthylene represented by the formulas (a), (c) and (e), which comprises reacting a cyanuric halide, an amine compound of the following formula (II), wherein R₂, B₁ and Y₁ are as defined in Claim 1, another amine compound of the following formula (III), wherein R₃, B₂ and Y₂ are as defined in Claim 1, and a starting compound capable of forming a polyazo dye obtainable by coupling reactions of the compounds represented by the following formula (IV-1, 2 and 3), (V-1, 2 and 3) and (VI-1, 2 and 3), each in free acid form, wherein R₁, R₄, R₇, R₈, A, m, p and r are as defined in claim 1, wherein R₅, R₆ and D are as defined in Claim 1, and wherein R₁, R₉, E, n and q are as defined in Claim 1, provided that the group, is present in any one of the group represented by the formulas (V-1) and (V-3), for producing the bisazo compounds having the respective dye moieties of the formulas (1), (2) and (4) as defined in Claim 1, or a member consisting of compounds represented by the following formulas (VII), (VIII), (IX) and (X), wherein R₁₁ and t are as defined in Claim 1, wherein R₁₂ and R₁₃ are as defined in Claim 1, wherein R₁₄ and R₁₅ are as defined in Claim 1, and wherein R₁ and u are as defined in Claim 1, whereby in the production of the desired bisazo compound having the dye moiety of the formulas (1) and (4) as defined in claim 1, the compounds of the formula (IV-I) and (VI-1) are first diazotized, followed by coupling with the compounds of the formulas (IV-2) and (VI-2), respectively, thereby obtaining respective monoazo intermediate compound, and the monoazo intermediate compounds are then diazotized, followed by coupling with the compounds of the formulas (IV-3) and (VI-3), respectively, thereby obtaining the respective bisazo intermediate compounds; or in the production of the desired bisazo compound having the dye moiety of the formula (2) as defined in claim 1, the compound of the formula (V-1) is first diazotized, followed by coupling with the compound of the formula (V-2), thereby obtaining the monoazo intermediate compound, and successively, the compound of the formula (V-3) is diazotized, followed by coupling with the above monoazo intermediate compound, thereby obtaining the bisazo intermediate compound; and whereby in case of the production of the desired trisazo compound having the dye moiety of the formula (3) as defined in claim 1, the starting compounds of the formulas (VII), (VIII) and (IX) are subjected to diazotization and coupling reactions to obtain a bisazo intermediate compound, while on the other hand, the compound of the formula (X) and both amines of the formulas (II) and (III) are subjected to condensation reactions with a cyanuric chloride in an optional order to obtain a desired condensate, and successively, the bisazo intermediate compound is diazotized, followed by coupling with the above condensate, whereby the desired trisazo compound can be obtained. The process according to Claim 1, wherein R₁, R₂ and R₃ independently of one another are each hydrogen or C₁ - ₄ alkyl. The process according to Claim 1, wherein R₁ is hydrogen or methyl, and R₂ and R₃ independently of one another are each hydrogen, methyl or ethyl. The process according to Claim 1, wherein B₁ and B₂ independently of one another are each phenylene unsubstituted or substituted once or twice by methyl, methoxy, ethyl, ethoxy, nitro, sulfo, carboxy, chloro or bromo, or naphthylene unsubstituted or substituted once by sulfo. The process according to Claim 1, wherein Y₁ and Y₂ are both β-sulfatoethyl. The process according to Claim 1, wherein R₁₁ is hydrogen. The process according to Claim 1, wherein R₁₂ and R₁₄ independently of one another are each hydrogen, methyl, ethyl, methoxy, ethoxy or sulfo. The process according to Claim 1, wherein R₁₃ and R₁₅ independently of one another are each hydrogen, methyl, ethyl, methoxy, ethoxy, acetylamino, ureido or sulfo. The process according to Claim 1, wherein R₁₆ is hydrogen, methyl, ethyl, methoxy or ethoxy. The process according to Claim 1, wherein R₁₇ is hydrogen. The process according to Claim 1, wherein R₁₈ is hydrogen, methyl, methoxy or sulfo, and R₁₉ is methyl, methoxy, acetylamino or ureido. The process according to Claim 1, wherein R₂₀ is hydrogen, methyl, methoxy or sulfo, and R₂₁ is methyl, methoxy, acetylamino or ureido. The process according to Claim 1, wherein R₁ is hydrogen and E is 8-sulfonaphthylene. A process for dyeing or printing fiber materials, which comprises using a polyazo compound of the formula (I) as obtained in Claim 1. Fiber materials dyed or printed by the process of Claim 15.

Inventors: HARADA, NAOKI, OMURA, TAKASHI, SAWAMOTO, HIROKAZU
Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED
Application year: 1987
Main classification: C09B62
IPC codes: C09B62