WO2014156852A1 - 黒色用テトラキスアゾ化合物、それを含む染料組成物およびそれを用いる染色方法 - Google Patents
黒色用テトラキスアゾ化合物、それを含む染料組成物およびそれを用いる染色方法 Download PDFInfo
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- WO2014156852A1 WO2014156852A1 PCT/JP2014/057419 JP2014057419W WO2014156852A1 WO 2014156852 A1 WO2014156852 A1 WO 2014156852A1 JP 2014057419 W JP2014057419 W JP 2014057419W WO 2014156852 A1 WO2014156852 A1 WO 2014156852A1
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- 0 *c1cc(S(O)(=O)=O)cc2c1c(N)cc(S(O)(=O)=O)c2 Chemical compound *c1cc(S(O)(=O)=O)cc2c1c(N)cc(S(O)(=O)=O)c2 0.000 description 2
- QEZZCWMQXHXAFG-UHFFFAOYSA-N Nc(c1c2)cccc1ccc2S(O)(=O)=O Chemical compound Nc(c1c2)cccc1ccc2S(O)(=O)=O QEZZCWMQXHXAFG-UHFFFAOYSA-N 0.000 description 2
- DQSVCWQHWHTLED-OUKQBFOZSA-N C/N=N/c1cccc2ccccc12 Chemical compound C/N=N/c1cccc2ccccc12 DQSVCWQHWHTLED-OUKQBFOZSA-N 0.000 description 1
- SHHIUWFOBYRJAM-CMDGGOBGSA-N C/N=N/c1ccccc1 Chemical compound C/N=N/c1ccccc1 SHHIUWFOBYRJAM-CMDGGOBGSA-N 0.000 description 1
- BWNDDYCBISBZOM-ZQHSETAFSA-N Oc(c1ccc2Nc3ccccc3)cc(S(O)(=O)=O)cc1c2/N=N/c1cccc(cc2)c1cc2S(O)(=O)=O Chemical compound Oc(c1ccc2Nc3ccccc3)cc(S(O)(=O)=O)cc1c2/N=N/c1cccc(cc2)c1cc2S(O)(=O)=O BWNDDYCBISBZOM-ZQHSETAFSA-N 0.000 description 1
- WIBSRTKUPNFWNK-MZIRVNSMSA-N Oc1cc(S(O)(=O)=O)cc2c1c(/N=N\c(cc1)c(ccc(S(O)(=O)=O)c3)c3c1/N=N\c(cc1)c(ccc(S(O)(=O)=O)c3)c3c1/N=N\c(c(O)c(cccc1)c1c1)c1S(O)(=O)=O)cc(S(O)(=O)=O)c2 Chemical compound Oc1cc(S(O)(=O)=O)cc2c1c(/N=N\c(cc1)c(ccc(S(O)(=O)=O)c3)c3c1/N=N\c(cc1)c(ccc(S(O)(=O)=O)c3)c3c1/N=N\c(c(O)c(cccc1)c1c1)c1S(O)(=O)=O)cc(S(O)(=O)=O)c2 WIBSRTKUPNFWNK-MZIRVNSMSA-N 0.000 description 1
- YGNDWDUEMICDLW-UHFFFAOYSA-N Oc1cc(S(O)(=O)=O)cc2c1ccc(Nc1ccccc1)c2 Chemical compound Oc1cc(S(O)(=O)=O)cc2c1ccc(Nc1ccccc1)c2 YGNDWDUEMICDLW-UHFFFAOYSA-N 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/02—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using azo dyes
- D06P1/04—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using azo dyes not containing metal
- D06P1/06—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using azo dyes not containing metal containing acid groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
- C09B33/18—Trisazo or higher polyazo dyes
- C09B33/26—Tetrazo dyes of the type A->B->C->K<-D
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/39—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using acid dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/6008—Natural or regenerated cellulose using acid dyes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/28—Colorants ; Pigments or opacifying agents
Definitions
- the present invention relates to a tetrakisazo compound for black or a salt thereof, a dye composition containing the same, a dyeing method using the dye composition, and a dyed product.
- direct dyes having good dyeing properties are often used.
- C.I. I. Direct Black 19 and C.I. I. Direct Black 168 is often used.
- these dyes have low light resistance, and use of dianisidine as a main raw material is regarded as a problem.
- dianisidine falls under the category of a specified chemical substance 1 and is known to have adverse effects on the human body and the environment due to its carcinogenicity. Its use must be carried out under extremely strict protective equipment. There are many problems in terms of management and production efficiency.
- the present invention provides an excellent black azo dye compound for paper and pulp that can be produced without using dianisidine of the first class of specific chemical substances and has good dyeability and light resistance.
- the present inventors have found a novel azo dye compound for black and a dye composition containing the same, and have reached the present invention. That is, the present invention relates to the following 1) to 11).
- R 1 has an amino group; a sulfo group; or one or two substituents selected from the substituent group consisting of a hydroxy group, a sulfo group, and a carboxy group. A good phenylamino group is shown, and A represents a substituent represented by the following formula (2) or the following formula (3).
- R 2 and R 3 each independently represent a hydrogen atom, a hydroxy group, a sulfo group, or a carboxy group.
- R 4 and R 5 each independently represents a hydrogen atom, a hydroxy group, a sulfo group, or a carboxy group.
- a black azo dye composition comprising the tetrakisazo compound or a salt thereof according to any one of 1) to 7) above. 9) C. I. Direct Orange 39, C.I. I. Direct Yellow 86, C.I. I. Direct Red 225, and C.I. I. The black azo dye composition according to 8) above, which contains 0.05 to 20% by mass of one or two dyes selected from the group consisting of Direct Red 83: 1 with respect to the total dye components. 10) A method for dyeing a cellulose fiber material, comprising a step of dyeing the cellulose fiber material using the black azo dye composition described in 8) or 9) above. 11) A dyed product dyed by the dyeing method described in 10) above.
- the tetrakisazo compound of the present invention used as an azo dye for black or a salt thereof can be produced without using dianisidine corresponding to the first class of specific chemical substances, and has excellent dyeability.
- the fibers can be dyed at high concentrations.
- stained using the tetrakisazo compound or its salt of this invention is excellent also in light resistance.
- the tetrakisazo compound or its salt of this invention is a tetrakisazo compound or its salt represented by the said Formula (1), and A in a formula is represented by the said Formula (2) or Formula (3).
- the number on the aromatic ring in the structural formula is described for convenience in order to indicate the substitution position of the substituent.
- R 1 in the above formula (1) is an independent substituent.
- the substituent include one or two substituents selected from a substituent group consisting of a hydroxy group, a sulfo group, and a carboxy group. Is one or two, and the substitution position is not particularly limited as long as substitution is possible.
- the phenylamino group in R 1 is preferably an unsubstituted phenylamino group or a p-carboxyphenylamino group, and more preferably an unsubstituted phenylamino group.
- the substitution position on the naphthyl group to be bonded is preferably 6-position or 7-position, more preferably 7-position.
- substitution position of A is not particularly limited as long as it can be substituted with the naphthyl group to which it is bonded, but 1-position or 8-position is preferable, and 8-position is particularly preferable.
- substitution position of R 2 and R 3 is not particularly limited as long as it can be substituted with the phenyl group to which it is bonded, but the 3-position, the 4-position, or the 5-position Is preferred.
- R 2 is a carboxy group at the 4-position.
- the bonding position of R 1 is preferably the 6th or 7th position of the naphthyl group to be bonded.
- R 4 and R 5 are particularly limited as long as it can be substituted with the naphthyl group to which R 4 is bonded, but R 4 is in the 2-position or 3-position.
- the 2-position is particularly preferable, and the R 5 is preferably the 6-position or the 7-position, and the 7-position is particularly preferable.
- R 4 and R 5 are particularly preferably R 4 in the 2-position and a hydrogen atom, and R 5 in the 7-position and a sulfo group.
- the azo group may be a syn type, an anti type, or a mixed type thereof.
- the salt of the tetrakisazo compound of the present invention include salts of acidic groups such as sulfo groups and salts of basic groups such as amino groups, but are not particularly limited.
- the acid group salt include sodium salt and potassium salt.
- basic group salts include salts with inorganic acids such as hydrochlorides, sulfates, and nitrates, and salts with organic acids such as p-toluenesulfonates and acetates. These salts can be obtained by a normal salt formation reaction.
- a dye composition containing the tetrakisazo compound of the present invention or a salt thereof is also included in the present invention.
- the dye composition may contain, for example, a solvent such as water and an additive usually used for a dye.
- the dye composition of this invention may contain other direct dyes other than the said tetrakisazo compound or its salt. Among them, C.I. I. Direct Orange 39, C.I. I. Direct Yellow 86, C.I. I. Direct Red 225, and C.I. I. It is preferable to blend one or two dyes selected from the group consisting of Direct Red 83: 1. These dyes are preferably blended in an amount of about 0.05 to 20% by mass relative to the total dye components. These dyes can be produced according to known literature, but commercially available dyes can also be used.
- the dye composition of the present invention can be used for dyeing cellulose fiber materials, particularly paper and pulp, and in particular, a dyeing method using a solution of the dye composition and a dyed material dyed by the dyeing method are also present. Included in the invention.
- the dye solution is preferably an aqueous solution, and can be obtained by dissolving or diluting the dye composition of the present invention in water.
- Examples of the dyeing method include a dyeing method under normal dyeing conditions for dyeing paper and pulp, a surface coating dyeing method including a size press method and a coating method, an internal dyeing method, and the like.
- the dyed product includes a cellulose fiber material dyed by the dyeing method of the present invention, paper / pulp, and articles obtained by processing the same.
- the tetrakisazo compound of the present invention is produced by carrying out a diazotization reaction and a coupling reaction by applying a conventional method for producing an azo dye described in Non-Patent Document 1 or the like.
- the diazotization reaction may be carried out by a conventional method in which a nitrite such as sodium nitrite is mixed with a mineral acid aqueous solution or suspension of the component to be diazotized, or neutral to weakly alkaline. Nitrite is added to the aqueous solution and mixed with mineral acid.
- a suitable temperature for the diazotization reaction is ⁇ 10 to 40 ° C.
- the azo compound obtained by the coupling reaction can be taken out as it is or deposited by aciding out or salting out and filtered, or it can proceed to the next step as a solution or suspension.
- the diazonium salt is insoluble and in suspension, it can be filtered and used as a press cake for the next coupling reaction.
- it can refine
- the organic solvent include water-soluble organic solvents such as alcohols such as methanol and ethanol, and ketones such as acetone.
- R 1 , R 2 , and R 3 used as appropriate in the following formulas (4) to (12) have the same meaning as described above.
- a compound represented by the following formula (4) is diazotized and subjected to a coupling reaction with a compound represented by the following formula (5) at 0 to 40 ° C. and pH 0.5 to 11 to obtain a compound represented by the following formula (6).
- the monoazo compound is obtained.
- Ts represents a tosyl group (p-toluenesulfonyl group).
- the monoazo compound represented by the above formula (6) is diazotized and subjected to a coupling reaction with the compound represented by the above formula (5) at 0 to 40 ° C. and pH 0.5 to 11 to obtain the following formula (7).
- the disazo compound represented is obtained.
- the compound represented by the following formula (8) is diazotized, and the compound represented by the following formula (9) and 0-40 ° C., preferably 5-10 ° C., pH 0.5-11, preferably pH 3.0.
- a coupling reaction is carried out at ⁇ 3.5 to obtain a monoazo compound represented by the following formula (10).
- the disazo compound represented by the above formula (7) is diazotized, and the compound represented by the above formula (10) and 0 to 40 ° C., preferably 20 to 25 ° C., pH 0.5 to 11, preferably pH 8. Coupling reaction is performed at 5 to 9.5 to obtain a tetrakisazo compound represented by the following formula (11).
- the tetrakisazo compound represented by the above formula (11) is detosylated at 40 to 100 ° C., preferably 80 to 85 ° C., pH 0.5 to 11, preferably pH 10.5 to 11.0, and the following formula
- the tetrakisazo compound of the present invention represented by (12) is obtained.
- the diazotized suspension was added dropwise to the solution at a temperature of 10 to 15 ° C. over about 30 minutes.
- the pH value of the reaction solution was maintained at 4.0 to 5.5 by adding an aqueous sodium hydrogen carbonate solution.
- the reaction was terminated by stirring at pH 4.0 to 5.5 at 10 to 15 ° C. for 3 hours and further at 20 to 25 ° C. overnight.
- sodium chloride was added to salt out, followed by filtration, isolation and drying to obtain 15.1 parts of the compound represented by the above formula (7).
- the pH value of the reaction solution was maintained at 2.0 to 3.0 by adding sodium carbonate aqueous solution.
- the reaction was terminated by stirring at 5 to 10 ° C. and pH 3.0 to 3.5 for 5 hours and further at 15 to 20 ° C. overnight. Subsequently, sodium chloride was added to the reaction solution for salting out, followed by filtration, isolation, and drying to obtain 7.0 parts of the compound represented by the above formula (13).
- a suspension obtained by diazotizing the compound represented by the above formula (7) was added dropwise to the solution at a temperature of 20 to 25 ° C. over about 30 minutes.
- the pH value of the reaction solution was maintained at 8.5 to 9.5 by adding an aqueous sodium hydrogen carbonate solution.
- the reaction was terminated by stirring at pH 9.0 to 9.5 and 20 to 25 ° C. for 3 hours and further overnight.
- reaction solution was adjusted to pH 10.5 to 11.0 with a 24% sodium hydroxide solution, and then maintained at pH 10.5 to 11.0 with an aqueous sodium carbonate solution at a temperature of 80 to 85 ° C. for 5 hours. Stir for ⁇ 12 hours. Cool to 20-25 ° C, adjust pH to 7.0-8.0 with 35% hydrochloric acid, salt out with sodium chloride, or acid out with 35% hydrochloric acid, filter, isolate, dry, 16 parts of the compound represented by the formula (15) were obtained.
- the absorption maximum wavelength ⁇ max of the obtained compound in water was 607 nm.
- the pH value of the reaction solution was maintained at 2.0 to 3.0 by adding sodium carbonate aqueous solution.
- the reaction was terminated by stirring at 5-10 ° C., pH 3.0-3.5 for 5 hours, and further at 10-15 ° C. overnight.
- sodium chloride was added to the reaction solution for salting out, followed by filtration, isolation and drying to obtain 8.8 parts of the compound represented by the above formula (16).
- a suspension obtained by diazotizing the compound represented by the above formula (7) was added dropwise to the solution at a temperature of 20 to 25 ° C. over about 30 minutes.
- the pH value of the reaction solution was maintained at 8.5 to 9.5 by adding an aqueous sodium hydrogen carbonate solution.
- the reaction was terminated by stirring at pH 9.0 to 9.5 and 20 to 25 ° C. for 3 hours and further overnight.
- aqueous solution was adjusted to pH 10.5 to 11.0 with a 24% sodium hydroxide solution, maintained at pH 10.5 to 11.0 with an aqueous sodium carbonate solution, and stirred at 80 to 85 ° C. for 5 to 12 hours. did. Cool to 20-25 ° C, adjust pH to 7.0-8.0 with 35% hydrochloric acid, salt out with sodium chloride, or acid out with 35% hydrochloric acid, filter, isolate, dry, 23 parts of the compound of the present invention represented by the formula (18) were obtained.
- the absorption maximum wavelength ⁇ max of the obtained compound in water was 609 nm.
- Example 3 A dye bath was prepared by dissolving 1.000 parts of the dye synthesized in Examples 1 and 2 in 1000 parts of water, and 300 parts of beating kraft pulp (30 parts of absolutely dry pulp, beating degree 35 SR) was added to the dye bath. After stirring for 15 minutes at room temperature, 1 part of a 30% aqueous solution of rosin size was added, and after further stirring for 10 minutes, 3 parts of crystalline aluminum sulfate was added and stirred for 20 minutes. The dyed pulp was paper-made and dried to obtain a black dyed product. COLOR EYE CE3000 (manufactured by Macbeth) and visual color measurement were performed on the obtained dyed product, and determination was performed by color measurement device determination and gray scale comparison for color change. In addition, the following light resistance test was performed. The results of both tests are shown in Table 1.
- the light resistance test method is as follows. Using a carbon arc fade meter (manufactured by Suga Test Instruments Co., Ltd.), the dyed paper was irradiated for 10 hours or 20 hours. The judgment grade was determined according to the blue scale grade defined in JIS L-0842. Larger grades are preferred, meaning that they are less likely to fade by light irradiation. In the tests shown in this specification, there was no difference in light resistance depending on the irradiation time.
- Dye A is C.I. I. Direct Black 19
- Dye B are C.I. I. Direct black 168, both of which are currently widely used black dyes. The results are shown in Table 1.
- the tetrakisazo compound for black that does not use the dianisidine of the present invention has equivalent dyeability and light resistance equivalent to or better than conventional black dyes.
- the known dye A which is widely used at present, has good dyeability and light resistance, but dianisidine must be used for production.
- a well-known dye B which is widely used at present, has good dyeability but low light resistance, and uses dianisidine for production.
- the tetrakisazo compound that can be produced without using the dianisidine of the present invention is a highly practical dye excellent in both dyeability and light resistance.
- Example 4 1.000 parts of the dye obtained in Example 1, 0.102 parts of C.I. I. Direct Orange 39, 0.034 parts C.I. I. Direct Red 83: 1 is mixed and dissolved in 1000 parts of water to prepare a dyeing bath. To this dyeing bath, 300 parts of beating kraft pulp (30 parts of absolutely dry pulp, beating degree 35SR) is added, and then at room temperature for 15 minutes. After stirring, 1 part of a 30% aqueous solution of rosin size was added and further stirred for 10 minutes, and then 3 parts of crystalline aluminum sulfate was added and stirred for 20 minutes. The dyed pulp was paper-made and dried to obtain a black dyed product. The obtained dyed product was determined for dyeability in the same manner as in Example 3, and further subjected to a light resistance test. The results are shown in Table 2.
- the black dye composition containing the tetrakisazo compound of the present invention that does not use dianisidine is equivalent in coloration and superior to a dye composition containing a conventional black dye that uses dianisidine. It was confirmed that the dye composition had high light resistance and high practicality.
- Example 5 1.000 parts of the dye obtained in Example 2, 0.120 parts of C.I. I. Direct Orange 39, 0.080 parts C.I. I. Direct Red 83: 1 is mixed and dissolved in 1000 parts of water to prepare a dyeing bath. To this dyeing bath, 300 parts of beating kraft pulp (30 parts of absolutely dry pulp, beating degree 35SR) is added, and then at room temperature for 15 minutes. After stirring, 1 part of a 30% aqueous solution of rosin size was added and further stirred for 10 minutes, and then 3 parts of crystalline aluminum sulfate was added and stirred for 20 minutes. The dyed pulp was paper-made and dried to obtain a black dyed product. The obtained dyed product was determined for dyeability in the same manner as in Example 3, and further subjected to a light resistance test. The results are shown in Table 3.
- the black dye composition containing the tetrakisazo compound of the present invention that does not use dianisidine is equivalent in coloration and superior to a dye composition containing a conventional black dye that uses dianisidine. It was confirmed that the dye composition had high light resistance and high practicality.
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Abstract
Description
下記式(1)で表されるテトラキスアゾ化合物又はその塩。
Aの結合位置がその結合するナフチル基の1位又は8位である上記1)に記載のテトラキスアゾ化合物又はその塩。
3)
R1の結合位置がその結合するナフチル基の6位又は7位であり、Aが上記式(2)で表されるフェニルアゾ基であり、その結合位置がその結合するナフチル基の8位であり、R2、R3の結合位置がその結合するフェニル基の3位、4位、又は5位である上記1)又は2)に記載のテトラキスアゾ化合物又はその塩。
4)
R2の結合位置がその結合するフェニル基の4位であり、R3の結合位置がその結合するフェニル基の3位である上記3)に記載のテトラキスアゾ化合物又はその塩。
Aが上記式(3)で表されるナフチルアゾ基である上記1)又は2)に記載のテトラキスアゾ化合物又はその塩。
6)
Aの結合位置がその結合するナフチル基の8位であり、R4の結合位置がその結合するナフチル基の2位又は3位であり、R5の結合位置がその結合するナフチル基の6位又は7位である上記5)に記載のテトラキスアゾ化合物又はその塩。
7)
R4の結合位置がその結合するナフチル基の2位であり、R5の結合位置がその結合するナフチル基の7位である上記6)に記載のテトラキスアゾ化合物又はその塩。
上記1)乃至7)のいずれか一項に記載のテトラキスアゾ化合物又はその塩を含有する黒色系アゾ染料組成物。
9)
C.I.Direct Orange 39、C.I.Direct Yellow 86、C.I.Direct Red 225、及びC.I.Direct Red 83:1からなる群から選ばれる1種又は2種の染料を、全染料成分に対して0.05~20質量%含有する上記8)に記載の黒色系アゾ染料組成物。
10)
上記8)又は9)に記載の黒色系アゾ染料組成物を使用してセルロース繊維材料を染色する工程を含むセルロース繊維材料の染色方法。
11)
上記10)に記載の染色方法により染色された染色物。
本発明のテトラキスアゾ化合物又はその塩は、上記式(1)で表されるテトラキスアゾ化合物又はその塩であり、式中のAは上記式(2)又は式(3)で表される。
構造式における芳香環上の数字は、置換基の置換位置を示すために便宜的に記載したものである。
R1におけるフェニルアミノ基としては無置換のフェニルアミノ基又はp-カルボキシフェニルアミノ基が好ましく、無置換のフェニルアミノ基がより好ましい。また、その結合するナフチル基上の置換位置は6位又は7位が好ましく、7位がより好ましい。
また、R1の結合位置はその結合するナフチル基の6位又は7位が好ましい。
R4、R5として殊更好ましくは、R4が2位で水素原子、R5が7位でスルホ基が挙げられる。
本発明のテトラキスアゾ化合物の塩としては、スルホ基等の酸性基の塩やアミノ基等の塩基性基の塩が挙げられるが、特に限定されない。酸性基の塩としては、例えば、ナトリウム塩、カリウム塩等が挙げられる。また、塩基性基の塩としては、例えば、塩酸塩、硫酸塩、硝酸塩等の無機酸との塩、p-トルエンスルホン酸塩、酢酸塩等の有機酸との塩が挙げられる。これらの塩は通常の造塩反応により得られる。
また、本発明の染料組成物は、上記テトラキスアゾ化合物又はその塩以外の他の直接染料を含有していてもよい。中でも、C.I.Direct Orange 39、C.I.Direct Yellow 86、C.I.Direct Red 225、及びC.I.Direct Red 83:1からなる群から選ばれる1種又は2種の染料を配合するのが好ましい。これらの染料は全染料成分に対して0.05~20質量%程度配合するのが好ましい。これらの染料は公知文献に従い製造することができるが、市販されている染料を使用することもできる。
ジアゾ化反応はジアゾ化する成分の塩酸、硫酸等の鉱酸水溶液又は懸濁液に亜硝酸ナトリウム等の亜硝酸塩を混合するという順法によるか、あるいはジアゾ化する成分の中性~弱アルカリ性の水溶液に亜硝酸塩を加えておき、これと鉱酸を混合するという逆法によって行われる。ジアゾ化反応の温度は、-10~40℃が適当である。
ジアゾニウム塩が難溶性で懸濁液となっている場合は、濾過し、プレスケ-キとして次のカップリング反応に使うこともできる。また、塩析を繰り返したり、有機溶媒を使用して水中から析出させたりして精製することもできる。該有機溶媒としては、例えば、メタノ-ル、エタノ-ル等のアルコ-ル類、アセトン等のケトン類等の水溶性有機溶媒が挙げられる。
まず、下記式(4)で表される化合物をジアゾ化し、下記式(5)で表される化合物と0~40℃、pH0.5~11でカップリング反応させ、下記式(6)で表されるモノアゾ化合物を得る。本発明の式中、Tsはトシル基(p-トルエンスルホニル基)を表す。
水500部中、8-アミノ-2-ナフタレンスルホン酸4.7部を48%水酸化ナトリウム溶液にてpH4.5~5.0に調整して溶解し、得られたジアゾ化した懸濁液を10~15℃の温度で約30分間かけて滴下した。この滴下の間、反応液のpH値を炭酸ナトリウム水溶液の添加で4.0~5.0に保持した。滴下終了後、5~10℃、pH4.0~5.0で5時間、さらに10~15℃で終夜撹拌し、反応を終結させた。次いで、反応液に塩化ナトリウムを加えて塩析し、濾過、単離、乾燥して、上記式(6)で表される化合物を14.2部得た。
水500部中、8-アミノ-2-ナフタレンスルホン酸4.5部を炭酸ナトリウム溶液にてpH3.4~3.8に調整して溶解した。その溶解液にジアゾ化した懸濁液を10~15℃の温度で約30分間かけて滴下した。この滴下の間、反応液のpH値を炭酸水素ナトリウム水溶液の添加で4.0~5.5に保持した。滴下終了後、pH4.0~5.5、10~15℃で3時間、さらに20~25℃で終夜撹拌し、反応を終結させた。次いで、塩化ナトリウムを加えて塩析し、濾過、単離、乾燥して、上記式(7)で表される化合物を15.1部得た。
水500部中、4-ヒドロキシ-7-フェニルアミノナフタレン-2-スルホン酸5部を48%水酸化ナトリウム溶液にてpH4.5~5.0に調整して溶解し、上記のジアゾ化反応の懸濁液を0~8℃の温度で約60分間かけて滴下した。この滴下の間、反応液のpH値を炭酸ナトリウム水溶液の添加で2.0~3.0に保持した。滴下終了後、5~10℃、pH3.0~3.5で5時間、さらに15~20℃で終夜撹拌し、反応を終結させた。次いで、反応液に塩化ナトリウムを加えて塩析し、濾過、単離、乾燥して、上記式(13)で表される化合物を7.0部得た。
水500部中、上記工程3で得られた上記式(13)で表される化合物7.0部を48%水酸化ナトリウム溶液にてpH9.5~10.0に調整して溶解し、この溶液に上記式(7)で表される化合物をジアゾ化した懸濁液を20~25℃の温度で約30分間かけて滴下した。この滴下の間、反応液のpH値を炭酸水素ナトリウム水溶液の添加で8.5~9.5に保持した。滴下終了後、pH9.0~9.5、20~25℃で3時間、さらに終夜撹拌し、反応を終結させた。
水500部中、4-ヒドロキシ-7-フェニルアミノナフタレン-2-スルホン酸5部を48%水酸化ナトリウム溶液にてpH4.5~5.0に調整して溶解し、上記のジアゾ化反応の懸濁液を0~8℃の温度で約60分間かけて滴下した。この滴下の間、反応液のpH値を炭酸ナトリウム水溶液の添加で2.0~3.0に保持した。滴下終了後、5~10℃、pH3.0~3.5で5時間、さらに10~15℃で終夜撹拌し、反応を終結させた。次いで、反応液に塩化ナトリウムを加えて塩析し、濾過、単離、乾燥して、上記式(16)で表される化合物を8.8部得た。
水500部中、上記工程1で得られた上記式(16)で表される化合物8.8部を48%水酸化ナトリウム溶液にてpH9.5~10.0に調整して溶解し、この溶液に上記式(7)で表される化合物をジアゾ化した懸濁液を20~25℃の温度で約30分間かけて滴下した。この滴下の間、反応液のpH値を炭酸水素ナトリウム水溶液の添加で8.5~9.5に保持した。滴下終了後、pH9.0~9.5、20~25℃で3時間、さらに終夜撹拌し、反応を終結させた。
実施例1、2で合成した染料1.000部を水1000部に溶解して染浴を調製し、この染浴に叩解クラフトパルプ300部(絶乾パルプ30部、叩解度35SR)を加えて、室温で15分間撹拌した後、ロジンサイズの30%水溶液1部を加え、さらに10分間撹拌した後、結晶硫酸アルミニウム3部を加えて20分間撹拌した。染色したパルプを抄紙し、乾燥して黒色の染色物を得た。
得られた染色物をCOLOR EYE CE3000(Macbeth社製)及び目視による測色を行い、測色機器判定及び変退色用グレースケール比較により判定を行った。また、以下の耐光性試験を行った。両試験の結果を表1に示す。
カーボンアークフェードメーター(スガ試験機社製)を用い、染色紙に10時間又は20時間照射した。判定級はJIS L-0841に規定されたブルースケールの等級に準じて決定した。等級が大きいほど光照射によって退色しにくいことを意味し、好ましい。なお、本明細書に示す試験では照射時間による耐光性に差がなかった。
1.000部の実施例1で得られた染料、0.102部のC.I.Direct Orange 39、0.034部のC.I.Direct Red 83:1を配合して水1000部に溶解して染浴を調製し、この染浴に叩解クラフトパルプ300部(絶乾パルプ30部、叩解度35SR)を加えて、室温で15分間撹拌した後、ロジンサイズの30%水溶液1部を加え、さらに10分間撹拌した後、結晶硫酸アルミニウム3部を加えて20分間撹拌した。染色したパルプを抄紙し、乾燥して黒色の染色物を得た。得られた染色物を実施例3と同様に染色性について判定し、さらに、耐光性試験を行った。結果を表2に示す。
1.000部の実施例2で得られた染料、0.120部のC.I.Direct Orange 39、0.080部のC.I.Direct Red 83:1を配合して水1000部に溶解して染浴を調製し、この染浴に叩解クラフトパルプ300部(絶乾パルプ30部、叩解度35SR)を加えて、室温で15分間撹拌した後、ロジンサイズの30%水溶液1部を加え、さらに10分間撹拌した後、結晶硫酸アルミニウム3部を加えて20分間撹拌した。染色したパルプを抄紙し、乾燥して黒色の染色物を得た。得られた染色物を実施例3と同様に染色性について判定し、さらに、耐光性試験を行った。結果を表3に示す。
Claims (11)
- Aの結合位置がその結合するナフチル基の1位又は8位である請求項1に記載のテトラキスアゾ化合物又はその塩。
- R1の結合位置がその結合するナフチル基の6位又は7位であり、Aが前記式(2)で表されるフェニルアゾ基であり、その結合位置がその結合するナフチル基の8位であり、R2、R3の結合位置がその結合するフェニル基の3位、4位、又は5位である請求項1又は2に記載のテトラキスアゾ化合物又はその塩。
- R2の結合位置がその結合するフェニル基の4位であり、R3の結合位置がその結合するフェニル基の3位である請求項3に記載のテトラキスアゾ化合物又はその塩。
- Aが前記式(3)で表されるナフチルアゾ基である請求項1又は2に記載のテトラキスアゾ化合物又はその塩。
- Aの結合位置がその結合するナフチル基の8位であり、R4の結合位置がその結合するナフチル基の2位又は3位であり、R5の結合位置がその結合するナフチル基の6位又は7位である請求項5に記載のテトラキスアゾ化合物又はその塩。
- R4の結合位置がその結合するナフチル基の2位であり、R5の結合位置がその結合するナフチル基の7位である請求項6に記載のテトラキスアゾ化合物又はその塩。
- 請求項1乃至7のいずれか一項に記載のテトラキスアゾ化合物又はその塩を含有する黒色系アゾ染料組成物。
- C.I.Direct Orange 39、C.I.Direct Yellow 86、C.I.Direct Red 225、及びC.I.Direct Red 83:1からなる群から選ばれる1種又は2種の染料を、全染料成分に対して0.05~20質量%含有する請求項8に記載の黒色系アゾ染料組成物。
- 請求項8又は9に記載の黒色系アゾ染料組成物を使用してセルロース繊維材料を染色する工程を含むセルロース繊維材料の染色方法。
- 請求項10に記載の染色方法により染色された染色物。
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