JPS6356268B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to anthraquinone dyes. Specifically, the present invention relates to cellulose-containing fibers,
In particular, the present invention relates to a reactive anthraquinone dye that dyes cellulose fibers, mixed fibers consisting of polyester fibers and cellulose fibers, etc. in a strong blue color. The present invention will be explained in detail below. The dye according to the present invention has the following general formula [] [In the formula, A represents a phenylene group, Y is -NH
- or -C ₂ H ₄ O-, X represents a lower alkyl group, a lower alkyl group, a lower alkoxy group, or a phenyl group optionally substituted with a halogen atom, Z represents an amino group, and 1 to 6 mono- or di-alkylamino groups, anilino groups, lower alkoxy lower alkylamino groups, lower alkoxy groups, or -O-(R ¹ O)
represents an n-R ² group (wherein R ¹ represents an ethylene group or a propylene group, R ² represents a methyl group or an ethyl group, and n is an integer of 1 to 5); ] is a water-insoluble reactive anthraquinone dye. The dye represented by the general formula [] shown above is, for example, the dye represented by the following general formula [] 1,4 represented by (wherein A, X and Y have the same meanings as in the general formula [])
-Diaminoanthraquinones and the following general formula [] (In the formula, Z has the same meaning as in the general formula []) in a solvent such as acetone, dioxane, N-methylpyrrolidone, etc., and a deoxidizing agent such as triethylamine, sodium carbonate, etc. It is produced by reacting in the presence of at room temperature for 2 to 10 hours. In the above general formula [], examples of the lower alkyl group represented by Examples of groups include methyl group, ethyl group, methoxy group, ethoxy group, linear or branched propyl group, butyl group, propoxy group, butoxy group, and examples of halogen atoms include chlorine atom and bromine atom. Can be mentioned. Mono- with a total number of carbon atoms of 1 to 6 represented by Z
Or as a di-alkylamino group, methylamino group, ethylamino group, dimethylamino group, diethylamino group, linear or branched propylamino group, butylamino group, pentylamino group, hexylamino group, dipropyl An example is an amino group. Examples of lower alkoxy lower alkylamino groups include methoxyethylamino group, ethoxyethylamino group, methoxypropylamino group, ethoxypropylamino group, linear or branched propoxyethylamino group, propoxypropylamino group, butoxyethylamino group. group, butoxypropylamino group. Cellulose-containing fibers that can be dyed with the dye of the present invention include natural fibers such as cotton and hemp, semi-synthetic fibers such as viscose rayon and cuprammonium rayon, and partially aminated or partially acylated modified cellulose fibers. It will be done. Of course, these may be woven or knitted fabrics or non-woven fabrics. Further examples include blended or woven products of the above-mentioned fibers and other types of fibers such as polyester fibers, cationically dyeable polyester fibers, anionically dyeable polyester fibers, urethane fibers, and di- or triacetate fibers. Among these, the dye of the present invention is particularly effective for cellulose fibers and blended or woven products of cellulose fibers and polyester fibers. As a method for dyeing the cellulose-containing fibers with the dye of the present invention, padding dyeing method and textile dyeing method are particularly suitable. Furthermore, wet or dry transfer printing methods can also be implemented. Conventionally, in padding dyeing and printing dyeing of cellulose fibers, dyes such as direct dyes, sulfur dyes, vat dyes, naphthol dyes, and water-soluble reactive dyes have been used. However, since none of the former four dyes are dyed with cellulose fibers through covalent bonds, they have problems in wet fastness and rubbing fastness. For these reasons, water-soluble reactive dyes are widely used, but it is known that these water-soluble reactive dyes also have the following problems. 1. Dye utilization rate is low at around 50-70%. 2. In order to obtain good wet fastness, which is a characteristic of water-soluble reactive dyes, it is necessary to completely remove unreacted dye from the fibers, which requires a large amount of water in the dyeing and cleaning process. Naturally, treatment of colored wastewater is also required in conjunction with this. On the other hand, in padding dyeing and printing dyeing of a mixed material consisting of polyester fibers and cellulose fibers having completely different degrees of hydrophilicity, the polyester fiber side is dyed with a disperse dye and the cellulose fiber side is dyed with the various dyes exemplified above. Generally, a combination of a disperse dye and a water-soluble reactive dye is widely used from the viewpoint of wet fastness and rubbing fastness of dyed products.
Furthermore, as dyeing methods, the one-bath one-stage padding dyeing method and the one-phase printing method are attracting the most attention from the viewpoint of economic efficiency. However, it is known that this case has the following problems. 1. Approximately 2% by weight of alkali, such as sodium carbonate, is usually added to the padding bath or printing dye paste as a reaction catalyst for water-soluble reactive dyes, but this decomposes the disperse dyes during heat fixation and reduces the dye density. , yellowing the cellulose and making the hue unclear. 2. The utilization rate of water-soluble reactive dyes is much lower than that of dyeing cellulose fibers alone because the dyes attached to the polyester fibers are not utilized. Therefore, it is necessary to use an excess of water-soluble reactive dye. 3 It goes without saying that a large amount of washing water is required to completely remove unreacted water-soluble reactive dyes and unfixed disperse dyes from fibers, which are factors that reduce the light fastness and wet fastness of dyed products. However, at that time, the unfixed disperse dye removed from the fibers also contaminates the cellulose fiber side or the area that is to be left as a white area. On the other hand, methods of dyeing these mixed materials with a single dye are also known. One known method is the so-called pigment resin method, in which pigments are attached to fibers using resin, but this method has problems with the texture and abrasion fastness of the dyed product. Furthermore, a method using a specific nonionic dye having a slightly larger molecular weight than ordinary disperse dyes for polyester fibers is known. Since this dye is adsorbed onto cellulose fibers, it will bleed if left for a long time. Furthermore, because the molecular weight is larger than that of ordinary disperse dyes, the temperature dependence during fixation is large and the reproducibility is low. These problems can be solved by using the dye represented by the general formula []. The staining method will be explained in detail below. When dyeing is carried out, it is desirable to finely disperse the dye represented by the general formula [] in a medium to a particle size of about 0.5 μm to 2 μm. The method is to use a water-soluble dispersant such as a nonionic or anionic dispersant, such as sodium ligninsulfonate or a sodium salt of naphthalenesulfonic acid-formalin condensate, and use a grinder such as a sand grinder or a mill to remove water in water. Using a slightly water-soluble or water-insoluble dispersant such as a compound made by adding a low molar amount of ethylene oxide to a sulfosuccinate, nonylphenol, etc., a solvent other than water,
For example, alcohols such as ethyl alcohol, isopropyl alcohol, and polyethylene glycol, ketones such as acetone and methyl ethyl ketone, hydrocarbons such as n-hexane, toluene, xylene, and mineral turbene, halogenated hydrocarbons such as tetrachloroethylene, and ethyl acetate. , esters such as butyl acetate, ethers such as dioxane, tetraethylene glycol dimethyl ether, or a method of finely dispersing them in a mixed solvent, a mixed system of water and a solvent that can be arbitrarily mixed with water among the above solvents. Examples include a method of finely dispersing the material. Furthermore, in the above-mentioned fine dispersion process, a polymer compound soluble in each dispersion medium or a surfactant having a function other than the dispersion effect may be added. This fine dye dispersion can be used as it is as a padding bath in a padding dyeing method or as a printing dyeing paste in a textile printing method, but when used as a normal padding bath and printing dyeing paste, the dye dispersion can be optionally mixed with water or water. A mixture system of a miscible solvent and water, or an o/w emulsion or a w/o emulsion system in which the oil layer is a petroleum hydrocarbon such as mineral turbene or a halogenated hydrocarbon such as tetrachloroethylene, is applied to the desired dyeing density. It is used after diluting it to the appropriate ratio. In order to advantageously carry out the present invention in preparing padding baths and printing dyeing pastes, acid binders such as alkali metal carbonates may be added for the purpose of promoting the reaction between cellulose fiber swelling agents or dyes and cellulose fibers. good. In addition, a thickener such as a water-soluble polymer such as sodium alginate may be added to prevent dry migration during padding dyeing or to adjust the viscosity of the color paste to the optimum viscosity for various printing methods. The cellulose swelling agent and the acid binder do not necessarily need to be present in the padding bath or printing dyeing paste, but may be present on the fiber side in advance. Any cellulose fiber swelling agent that has a boiling point of 150°C or higher and has the effect of swelling cellulose fibers can be used; for example, urea such as N,N,N',N'-tetramethylurea can be used. kind,
Examples include polyhydric alcohols such as polyethylene glycol and polypropylene glycol, or derivatives thereof. Particularly preferred as the cellulose fiber swelling agent are polyhydric alcohol derivatives having an average molecular weight of about 200 to 500, such as polyethylene glycol and polypropylene glycol, in which the hydroxyl groups at both ends are dimethylated or diacetylated and do not react with the reactive groups of the dye. The appropriate amount of the cellulose fiber swelling agent to be used is about 5 to 25% by weight, preferably about 8 to 15% by weight, based on the padding bath or textile dyeing paste. In addition to alkali metal carbonates, acid binders include alkali metal fatty acids such as alkali metal bicarbonates, alkali metal phosphates, alkali metal borates, alkali metal silicates, alkali metal hydroxides, and alkali metal acetates. Salts or alkali precursor compounds that generate alkali when salted in the presence of water, such as sodium trichloroacetate and sodium acetoacetate, can be used. In addition, since the monofluorotriazinyl group, which is the reactive group of the dye of the present invention, is much more reactive than the monochlorotriazinyl group, the amount of acid binder used is significantly reduced, and the amount of the dye during dyeing is reduced. Decomposition and yellowing of fibers can be prevented. The amount of acid binder to be used is approximately 0 to 0.1% by weight of the padding bath or textile dyeing paste in the case of monofluoromonoalkoxytriazinyl groups, and 0.1 to 0.2% by weight in the case of monofluoromonoaminotriazinyl groups. is sufficient. In order to dye the fibers with the dye of the present invention, a padding bath or a printing dye paste prepared by the above method is impregnated or printed on a material containing cellulose fibers, and after drying, the dyeing process is carried out at a temperature of 160° to 160°.
Heat treatment with hot air or superheated steam at 220°C for 30 seconds to 10 minutes or in high pressure saturated steam at 120°C to 150°C.
Treat for 30 minutes to 30 minutes and wash with hot water containing a surfactant, or o/w type or w/w type where the oil layer is a halogenated hydrocarbon such as tetrachlorethylene.
The cleaning is completed by cleaning with an O-type emulsion cleaning bath or by a conventional dry cleaning method. By the above method, it is possible to obtain a dyed product which is vividly and uniformly dyed and has good light fastness and wet fastness. Next, the present invention will be explained in more detail with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist thereof. Example 1 The following structural formula A dye dispersion was prepared using a paint shaker using a dye composition consisting of 15 g of anthraquinone dye shown below, 15 g of a naphthalene sulfonic acid-formaldehyde condensate, and 70 ml of water. Using this dye dispersion, prepare a textile dyeing paste with the following composition: Dye dispersion 6.5g 5% sodium alginate aqueous solution 55g Polyethylene glycol dimethyl ether (average molecular weight 400) 9g Sodium carbonate 0.05g Water Remaining amount 100g Mixing ratio 65/35) The blended fabric was printed using a screen printing machine, and after intermediate drying at 80℃ for 3 minutes, it was dried at 215℃ for 90℃.
It was fixed by dry heat for a few seconds. After washing with water, 1 g of sodium hydroxide and 2 g of nonionic surfactant (Score Roll #900 (trademark), manufactured by Kao Soap Co., Ltd.) were added.
Soaping was carried out for 20 minutes at a bath ratio of 1:30 using a washing solution containing .A blue dyed product with excellent light fastness was obtained. A portion of the above dyed material is treated with 70% sulfuric acid to dissolve the cotton, the resulting polyester fibers and another portion are treated with hexafluoroisopropanol to dissolve the polyester fibers, and the hue of the resulting cellulose fibers is obtained. When compared, it was found that the same hue was very good, and the light fastness of the dyed products of each fiber was also good. The dye used in this example was 1-amino-2-
Methylsulfonyl-4-(4'-aminoanilino)
40.7 g of anthraquinone in 200 ml of N-methylpyrrolidone solvent, 22.1 g of 2,4-difluoro-6-methoxy-s-triazine and 10.1 g of triethylamine.
It was produced by reacting at room temperature in the presence of g. The λmax (acetone) of this product was 626 nm. Example 2 Structural formula below A dye dispersion was prepared using a sand grinder using a dye composition consisting of 15 g of anthraquinone dye shown below, 15 g of a naphthalene sulfonic acid-formaldehyde condensate, and 70 ml of water. Using this dye dispersion, a printing dyeing paste with the following composition: Dye dispersion 7g 5% sodium alginate aqueous solution 55g Polypropylene glycol diacetate (average molecular weight 300) 12g Sodium carbonate 0.05g Water Remaining amount 100g was prepared and mercerized. Print on broad cotton (number 40) using a screen printing machine, dry at 80℃ for 3 minutes, and then dry at 185℃ for 7 minutes.
Treated with superheated steam for minutes. When the washing treatment was carried out in accordance with the method described in Example 1, a blue dyed product with excellent light fastness and wet fastness was obtained. The dye used in this example was 1-amino-2-
43.6 g of methylsulfonyl-4-(4'-hydroxyethylanilino)anthraquinone was added to 2,4-difluoro-6 in 220 ml of N-methylpyrrolidone solvent.
It was produced by reacting 34.8 g of -isopropoxypropylamino-s-triazine with 10.1 g of triethylamine at room temperature. The λmax (acetone) of this product was 625 nm. Example 3 Structural formula below A dye composition consisting of 10 g of anthraquinone dye represented by the formula, 2 g of polyoxyethylene glycol nonyl phenyl ether (HLB8.9), and 88 g of diethylene glycol diacetate was ground using a paint conditioner as a fine dispersion machine to form a dye ink. was prepared. After mixing 10 g of this dye ink and 55 g of mineral turpentine, this was gradually poured into 35 g of an aqueous solution having the following composition while stirring with a homomixer (5000 to 7000 RPM) and stirred until it became uniform. A w-type emulsion colored paste was prepared. Water 31g Lepitol G (trademark, manufactured by Daiichi Kogyo Seiyaku Co., Ltd., special nonionic surfactant) 3.8g Sodium trichloroacetate 0.2g 35g Next, use this colored glue to make a polyester/cotton (mixing ratio 65/35) blended fabric. It was printed using a screen printing machine, dried at 100°C for 2 minutes, and then treated with superheated steam at 175°C for 7 minutes. then washed in a hot tetrachloroethylene bath containing a small amount of water;
After drying, a greenish-blue dyed product with excellent wet fastness and no white spot staining was obtained. The dye used in this example was 1-amino-2-
Phenylsulfonyl-4-(4'-aminoanilino)
It was prepared by reacting 47.0 g of anthraquinone with 28.7 g of 2,4-difluoro-6-methoxyethoxy-s-triazine in the presence of 10.1 g of triethylamine in 240 ml of N-methylpyrrolidone solvent at room temperature. The λmax (acetone) of this product was 634 nm. Example 4 Structural formula below 16g of the dye shown, 10g of polyoxyethylene glycol nonyl phenyl ether (HLB13.3)
A dye dispersion liquid was prepared by finely dispersing a dye composition consisting of 74 g of water and 74 g of water using a sand grinder. Using this dye dispersion, prepare a padding bath with the following composition: dye dispersion 6g tetraethylene glycol dimethyl ether 15g sodium trichloroacetate 0.2g water remaining 100g, and impregnate a polyester/rayon (mixing ratio 65/35) blended fabric. , aperture rate 75%
After squeezing, it was dried at 100°C for 2 minutes and fixed by dry heat at 200°C for 1 minute. By washing this product in a hot ethanol bath, a greenish blue dyed product with no irritation and excellent wet fastness was obtained. The dye used in this example was 1-amino-2-
49.9 g of phenylsulfonyl-4-(4'-hydroxyethylanilino)-anthraquinone in 250 ml of N-methylpyrrolidone solvent in the presence of 24.0 g of 2,4-difluoro-6-ethylamino-s-triazine and 10.1 g of triethylamine. It was produced by reacting the following at room temperature. The λmax (acetone) of this product is 631n
It was m. Example 5 Printing was carried out in the same manner as in Example 1 except that the fiber was changed to a nylon/rayon (mixing ratio 50/50) blended fabric and the dry heat fixation temperature was changed to 185°C, and wet fastness was obtained. A printed product with good strength and blue color was obtained. According to microscopic observation, the printed material was uniformly dyed. Example 6 Mercerized broad cotton (number 40) was immersed in a treatment bath consisting of 0.14 g of sodium carbonate, 25 g of tetraethylene glycol dimethyl ether, and 75 g of water, squeezed to a squeezing rate of 70%, and then dried at 50°C for 5 minutes. . On the other hand, 6 g of the dye used in Example 1, 8 g of ethyl cellulose, and 86 g of isopropyl alcohol were ground with a paint conditioner to prepare an ink. This ink was gravure printed on gravure coated paper to create a transfer sheet. Layer the above cotton cloth on this transfer sheet and use the vacuum transfer machine Arilotsupah FV2-1019 (manufactured by Naomoto Kogyo Co., Ltd.)
When the transfer was fixed by heating and pressing at 10 mmHg, 210° C., and 100 g/cm ² G for 60 seconds, a blue dyed product was obtained. When the dyed product was washed with hot N,N-dimethylformamide, almost no dye was observed to come off. Example 7 Using the anthraquinone dyes listed in Table 1 below, when the reactive group is a monofluoromonoalkoxytriazinyl group, add 0.05% by weight of sodium carbonate as a deoxidizing agent (for printing paste) and In the case of monofluoromonoaminotriazinyl group, 0.2% by weight of sodium carbonate (for printing paste) was used in Example 1.
Printing was carried out according to the method described in . Table 1 shows the color tone of the dyed fabric obtained and the λmax (acetone) of the anthraquinone dye used.

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Claims (1)

[Claims] 1. General formula [In the formula, A represents a phenylene group, Y is -NH
- or -C ₂ H ₄ O-, X represents a lower alkyl group, a lower alkyl group, a lower alkoxy group, or a phenyl group optionally substituted with a halogen atom, Z represents an amino group, and 1 to 6 mono- or di-alkylamino groups, anilino groups, lower alkoxy lower alkylamino groups, lower alkoxy groups or -O-(R ¹ O)
represents an n-R ² group (wherein R ¹ represents an ethylene group or a propylene group, R ² represents a methyl group or an ethyl group, and n is an integer of 1 to 5); ] Anthraquinone dye.