JP2018035273A - Inkjet printing method, manufacturing method of colored fabric, inkjet ink, ink cartridge and colored fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inkjet printing method or the like capable of coloring various kids of fabrics and excellent in image fastness.SOLUTION: There are provided an inkjet printing method having processes (A), (B) and (C), and further a heat treatment process, a manufacturing method of a colored fabric, an inkjet ink used for the methods, an ink cartridge filled with the inkjet ink, and a colored fabric. (A) An aqueous treatment liquid containing an epoxy-based crosslinking agent is added to the fabric. (B) The inkjet ink containing a water dispersion of a dye polymer is added to the fabric by an inkjet method. (C) The inkjet ink containing the epoxy-based crosslinking agent and the water dispersion of the dye polymer is added to the fabric by the inkjet method.SELECTED DRAWING: None

Description

  The present invention relates to an inkjet printing method, a colored cloth manufacturing method, an inkjet ink, an ink cartridge, and a colored cloth.

  Conventionally, a colorant used for coloring a fabric is either a dye or a pigment. As a method for industrially coloring a fabric using these colorants, a screen printing method, a roller printing method, a transfer method, An inkjet method has been performed. In particular, the ink jet method does not require a plate to be prepared as compared with other methods, can quickly form an image with excellent gradation, and uses only a necessary amount of ink as a formed image. It can be said that this is an excellent image forming method having environmental advantages such as few.

For example, Patent Document 1 describes ink-jet printing in which a dye is dissolved in water to prepare an ink, and a fabric is dyed by an ink-jet method.
Each dye molecule interacts with the fiber so that the dye penetrates into the inside of the fiber and is integrated with the fiber. Therefore, the fabric dyed with the dye has a soft texture and is preferred as a garment. . On the other hand, ink-jet textile printing using dyes requires a textile paste to be applied to the cloth in advance in order to prevent blurring (improves the sharpness), and in addition, it is a colored cloth to fix the dye after dyeing. It is necessary to wash the excess dye and printing paste by a process such as water washing or soaping. For this reason, a process is complicated and an apparatus and an effort are required, and waste water arises.
Further, in coloring with a dye, it is necessary to appropriately select the type of dye depending on the type of fiber. For example, reactive dyes or direct dyes for cellulose fibers such as cotton and hemp, acid dyes for animal fibers such as wool or silk, acid dyes or disperse dyes for nylon fibers, disperse dyes and acrylics for polyester fibers Cationic dyes are used for the fibers.

An ink-jet sublimation transfer printing method has been widely put into practical use as a dyeing method that has improved the above-described complicated steps in normal ink-jet printing, the problem of time and labor required for the apparatus, and the problem of wastewater (see, for example, Patent Document 2). In the ink-jet sublimation transfer printing method, a pattern to be printed using an ink-jet printer is printed on transfer paper with ink containing resin particles containing a disperse dye, and then the transfer paper and a polyester fabric are superposed and heat-treated. This is a method for transferring the sublimable dye from the resin particles to the polyester fabric.
However, the dyeing mechanism in this system is said to be a phenomenon of thermal diffusion or thermal sublimation of dye molecules, or a mixture of both. In order to use a certain sublimation dye, it mainly corresponds to dyeing | staining of a polyester fabric. In addition, the used transfer paper cannot be recycled and becomes industrial waste.

On the other hand, an ink-jet coloring method using a pigment has also been studied (for example, see Patent Document 3). In this method, a pigment and a surfactant as a dispersant are mixed in water and then finely dispersed with an attritor or a mill machine together with glass beads, zirconia beads, titania beads, or stainless steel balls, etc., are used as a colorant. It has been. Then, this colorant is diluted with a reducer containing an emulsion resin for fixing the pigment, a pigment ink is prepared, adhered to the fiber by an ink jet method, and the resin is fused by a heating roller to fix the pigment. .
Unlike the coloring method using dyes, the coloring method using pigments does not require the selection of a colorant depending on the fiber type, and does not require a complicated steam heating (steaming) process or water washing process. The pigment can be fixed.
However, the pigment adheres to (is on) the fiber in the form of particles in which the dye molecules are gathered, and maintains fastness such as washing fastness and friction fastness of the colored cloth (colored cloth). In addition, a large amount of emulsion resin must be used as a fixing agent, the texture of the colored cloth becomes stiff, and the quality as clothing is inferior to the colored cloth dyed with a dye. In addition, the emulsion resin is dried due to the volatilization of water, the pigment ink is thickened, and a phenomenon such as clogging of the ink jet printer is likely to occur, resulting in poor workability.

  Patent Document 4 describes that an ink containing a disperse dye is applied to a polyester fabric treated with a pretreatment agent containing a polymer resin and a crosslinking agent by an ink jet method.

JP 2002-348502 A JP-A-10-58638 JP 2010-37700 A JP 2009-249773 A

As described above, coloring with dyes is excellent in the quality (texture, fastness) of the colored cloth, but it is necessary to select a dye depending on the fiber type, and it is necessary to apply printing paste and wash with water. However, there are problems such as complicated problems, problems that require equipment, and inferior environmental loads such as waste water and waste materials. On the other hand, coloring with pigments does not require the selection of dyes based on the fiber type, and the process is simple, but has problems in workability such as clogging of ink jet printers due to thickening of ink, and coloring cloth There is a problem that many of them are inferior in quality (texture). Furthermore, there is a problem that a colored fabric colored with a pigment is inferior in washing resistance, sweat resistance, friction resistance, and dry cleaning resistance.
Further, even when the ink jet textile printing method described in Patent Document 4 is used, the problem that the applicable fiber types are limited is still unsolved because it only supports dyeing of polyester fabric.

  That is, the problem of the present invention is that various kinds of fabrics can be dyed, application of printing paste and washing with water are unnecessary, there is little environmental load, there is no problem in workability, and the sharpness of the obtained image is improved. To provide an ink-jet printing method and a colored cloth manufacturing method that are excellent in fastness (washing resistance, sweat resistance, friction resistance, and dry cleaning resistance) and excellent in quality (texture) of a colored cloth. It is in. Another problem of the present invention is that various kinds of fabrics can be dyed, printing paste application and washing with water are unnecessary, there is little environmental load, there is no problem in workability, and sharpness and fastness. Ink jet ink that can provide a colored cloth with excellent images and quality (texture) excellent in (washing resistance, sweat resistance, friction resistance, and dry cleaning resistance), an ink cartridge filled with the ink jet ink, And providing a colored fabric.

The inventors of the present invention have made extensive studies to solve the above-mentioned problems, and various methods are used for printing on a fabric by an inkjet method using an aqueous dispersion of a dye polymer having a repeating unit containing a structure derived from a dye. It has been found that various types of fabrics can be dyed, application of printing paste and washing with water are unnecessary, there is little environmental load, there is no problem in workability, and an excellent quality colored fabric can be obtained.
In addition to the dye polymer, the use of an epoxy-based cross-linking agent has found that the fastness such as washing resistance, sweat resistance, friction resistance, and dry cleaning resistance of the resulting image is remarkably improved. .
Although details are unknown as a mechanism by which the above problem can be solved by the above method, the present inventors presume as follows.
The aqueous dispersion of the dye polymer having a repeating unit containing a structure derived from the dye uses the dye polymer as an aqueous dispersion instead of an aqueous solution, so that bleeding does not occur as in the case of pigment particles, and no printing paste and washing with water are required. In addition, no waste water is generated because no washing process is required. In addition, since it can be directly printed on the fabric, waste such as transfer paper is not generated. Since the emulsion resin as the fixing agent is not used unlike the pigment ink, the viscosity of the ink is not increased and the workability is excellent. Furthermore, it is considered that the dye polymer is integrated with the fiber at the molecular level so as to cover the surface of the fiber regardless of the fiber type. For this reason, it is thought that the cloth which consists of various kinds of fibers can be dyed, and the colored cloth of the excellent quality is obtained.
In addition to the dye polymer, when an epoxy crosslinking agent is used in combination, a heat treatment is performed to form a three-dimensionally crosslinked hydrophobic film on the surface of the fabric fibers, improving the fastness of the image to water and the like. It is thought to do.
In the present invention, “directly printing” an inkjet ink on a fabric by an inkjet method does not require a transfer process, and the inkjet ink is directly printed on the fabric and the printing paste is applied. Both unnecessary and ink jet inks are directly printed on the fabric.
Specifically, the object of the present invention has been achieved by the following means.

<1>
An inkjet printing method comprising the following steps (A), (B), and (D).
Step (A): A step of applying an aqueous treatment liquid containing an epoxy-based crosslinking agent to a fabric Step (B): An aqueous dispersion of a dye polymer (P) having a repeating unit containing a structure derived from a dye on a fabric. The process of providing the inkjet ink containing by the inkjet method Process (D): Heat treatment process <2>
An inkjet printing method comprising the following steps (C) and (D).
Step (C): A step of applying an inkjet ink containing an epoxy-based crosslinking agent and an aqueous dispersion of a dye polymer (P) having a repeating unit containing a structure derived from a dye to the fabric by an inkjet method. Step (D) : Heat treatment step <3>
The inkjet printing method according to <1>, wherein the application of the aqueous treatment liquid in the step (A) is performed by a coating method, a padding method, or an inkjet method.
<4>
The inkjet printing method according to any one of <1> to <3>, wherein the temperature of the heat treatment in the step (D) is 50 ° C. or higher and lower than 250 ° C.
<5>
Any one of <1> to <4>, wherein the dye polymer (P) in the aqueous dispersion is a particulate dye polymer, and the average particle diameter of the particulate dye polymer is 50 to 500 nm. The inkjet printing method as described.
<6>
The ink-jet printing method according to any one of <1> to <5>, wherein the dye polymer (P) has a weight average molecular weight of 3,000 to 200,000.
<7>
The inkjet printing method according to any one of <1> to <6>, wherein the dye polymer (P) has a group that reacts with an epoxy group.
<8>
The inkjet printing method according to any one of <1> to <7>, wherein the aqueous dispersion further contains a low molecular surfactant or a high molecular dispersant having a group that reacts with an epoxy group.
<9>
The inkjet printing method according to any one of <1> to <8>, wherein the dye polymer (P) has a carboxyl group.
<10>
The inkjet textile printing method as described in <1> or <3> whose content of the said epoxy-type crosslinking agent of the said process (A) is 0.05-10 mass% with respect to the said aqueous processing liquid whole quantity.
<11>
The inkjet textile printing method as described in <2> whose content of the said epoxy type crosslinking agent of the said process (C) is 0.05-10 mass% with respect to the said inkjet ink whole quantity.
<12>
The manufacturing method of the colored cloth containing following process (A), (B), and (D).
Step (A): A step of applying an aqueous treatment liquid containing an epoxy-based crosslinking agent to a fabric Step (B): An aqueous dispersion of a dye polymer (P) having a repeating unit containing a structure derived from a dye on a fabric. The process of providing the inkjet ink containing by the inkjet method Process (D): Heat treatment process <13>
The manufacturing method of the colored cloth containing following process (C) and (D).
Step (C): A step of applying an inkjet ink containing an epoxy-based crosslinking agent and an aqueous dispersion of a dye polymer (P) having a repeating unit containing a structure derived from a dye to the fabric by an inkjet method. Step (D) : Heat treatment step <14>
An inkjet ink comprising an epoxy-based crosslinking agent and an aqueous dispersion of a dye polymer (P) having a repeating unit containing a structure derived from a dye.
<15>
The inkjet ink according to <14>, which is for textile printing.
<16>
An ink cartridge filled with the inkjet ink according to <14> or <15>.
<17>
A colored cloth having an image containing a cured product of an epoxy-based crosslinking agent and a dye polymer (P) having a repeating unit containing a structure derived from a dye on at least a part of the surface of the cloth.

  According to the present invention, it is possible to dye various types of fabrics, there is no need to apply printing paste and washing with water, there is little environmental load, there is no problem in workability, and the sharpness and fastness of the resulting image are obtained. It is possible to provide an inkjet printing method and a colored fabric manufacturing method that are excellent in (washing resistance, sweat resistance, friction resistance, and dry cleaning resistance) and excellent in quality (texture) of the colored fabric. . In addition, according to the present invention, various types of fabrics can be dyed, printing paste application and washing with water are unnecessary, there is little environmental load, there is no problem in workability, and sharpness and fastness (resistance) Inkjet ink, ink cartridge filled with inkjet ink, and coloring that can provide an image excellent in washability, sweat resistance, friction resistance, and dry cleaning resistance) and a colored cloth excellent in quality (texture) Cloth can be provided.

Hereinafter, the present invention will be described in detail.
In the present specification, a numerical range expressed using “to” means a range including numerical values described before and after “to” as a lower limit value and an upper limit value.
In the present specification, “(meth) acrylate” represents at least one of acrylate and methacrylate, “(meth) acryl” represents at least one of acryl and methacryl, and “(meth) acryloyl” represents at least acryloyl and methacryloyl. Represents a kind.

[Inkjet printing method]
The inkjet textile printing method of the present invention is
An inkjet printing method (first embodiment) including the following steps (A), (B), and (D), or an inkjet printing method (second embodiment) including the following steps (C) and (D). .

[First aspect]
Step (A): A step of applying an aqueous treatment liquid containing an epoxy-based crosslinking agent to a fabric Step (B): An aqueous dispersion of a dye polymer (P) having a repeating unit containing a structure derived from a dye on a fabric. Step of applying inkjet ink including ink jet method Step (D): Heat treatment step

[Second embodiment]
Step (C): A step of applying an inkjet ink containing an epoxy-based crosslinking agent and an aqueous dispersion of a dye polymer (P) having a repeating unit containing a structure derived from a dye to the fabric by an inkjet method. Step (D) : Heat treatment process

<Process (A)>
Step (A) of the first aspect is a step of applying an aqueous treatment liquid containing an epoxy-based crosslinking agent to the fabric.
The application method of the aqueous treatment liquid containing the epoxy-based crosslinking agent is not particularly limited, and examples thereof include a coating method, a padding method, an ink jet method, an electrodeposition coating method, and an electrostatic coating method. From the viewpoint, a coating method, a padding method, or an inkjet method is preferable.
The coating method is a method of applying a desired amount of processing liquid to a substrate using a brush, bar coater, spray, airless spray, rubber roller, etc. The padding method is a padding bath containing the processing liquid. After the substrate is immersed in the substrate, the substrate containing the treatment liquid is squeezed with a roller or the like to adjust the application amount of the treatment liquid. The ink jet method is a method in which a treatment liquid is filled in an ink cartridge and the treatment liquid is applied to a substrate using an ink jet printer.

In the step (A), the aqueous treatment liquid containing the epoxy crosslinking agent preferably gives an amount of 1 to ²⁰ g / m ^{2 to} the fabric as the solid content of the epoxy crosslinking agent, and is ² to 15 g / m. more preferably to impart ^second amount, it is particularly preferable to impart an amount of 3 to 10 g / ^{m 2.} When the application amount of the aqueous treatment liquid containing the epoxy-based crosslinking agent is 1 g / m ² or more, the effect of the present invention can be sufficiently exerted, and when the application amount is 20 g / m ² or less, the texture of the fabric is excellent.

<Process (B)>
The step (B) of the first embodiment is a step of applying an inkjet ink containing an aqueous dispersion of the dye polymer (P) to the fabric by an inkjet method.

  In the first aspect, the order in which the step (A) and the step (B) are performed is not particularly limited, the step (A) may be performed first, the step (B) may be performed later, and the step (B) may be performed. It may be performed first and step (A) may be performed later, or step (A) and step (B) may be performed simultaneously.

<Process (C)>
The step (C) of the second aspect is a step of applying an inkjet ink containing an epoxy-based crosslinking agent and an aqueous dispersion of the dye polymer (P) to the fabric by an inkjet method.

  After the step (A) or the step (B) of the first aspect and after the step (C) of the second aspect, a fabric drying step may be provided as necessary. The drying temperature is preferably 10 to 100 ° C, more preferably 15 to 80 ° C, and particularly preferably 20 to 60 ° C. The drying time is preferably 1 to 24 hours, more preferably 2 to 18 hours, and particularly preferably 2 to 12 hours. It is preferable to provide a drying step because the sharpness of the printed image is excellent.

<Process (D)>
Step (D) of the first and second embodiments is a heat treatment step. After the step (A) and the step (B) of the first embodiment, the step (D) is preferably performed after the step (C) of the second embodiment.
As temperature of the heat processing in a process (D), it is preferable that it is 50 degreeC or more and less than 250 degreeC, It is more preferable that it is 60-200 degreeC, It is still more preferable that it is 80-180 degreeC. By setting it as the said range, the effect of this invention can fully be exhibited. Further, the heat treatment time is preferably 15 to 360 seconds, more preferably 30 to 180 seconds. By setting it within this range, the effect of the present invention can be sufficiently and stably exhibited. When the heat treatment time is 360 seconds or less, there is no damage to the fabric, and the fabric feel is excellent. When the heat treatment time is 15 seconds or longer, the epoxy-based crosslinking agent reacts sufficiently and the effects of the present invention can be exhibited.

  Through the step (D), the epoxy group of the epoxy-based crosslinking agent is opened, and the fabric fiber and the dye polymer (P) or the dye polymer (P) are crosslinked via the epoxy-based crosslinking agent. As a result, the printed colored image is hardened, a hydrophobic film is formed, the dye polymer (P) is more integrated with the fiber, and the washing resistance of the image applied to the fabric is not impaired. Further, there is an effect that it is possible to further impart friction resistance, sweat resistance, dry cleaning resistance and the like.

<Post-processing>
The fabric (colored fabric) colored by the ink jet printing method of the first embodiment and the second embodiment is excellent in the softness and fastness of the texture, but if necessary, the entire surface is padded with a post-treatment agent. By doing so, it is possible to obtain a colored fabric having further improved softness and fastness (particularly friction resistance) of the texture. Post-treatment agents for the purpose of softening include cationic surfactants, anionic surfactants, nonionic surfactants, dimethyl silicone oil, amino silicone oil, carboxy modified silicone oil, hydroxy modified silicone oil, fatty acid , Fatty acid amide, mineral oil, vegetable oil, animal oil, plasticizer and the like.
Further, as a post-treatment agent for improving the smoothness of the colored fabric surface, metal soap, paraffin wax, carnauba wax, microstalline wax, dimethyl silicone oil, amino silicone oil, carboxy modified silicone oil, hydroxy modified silicone oil, etc. Is mentioned.
In the padding treatment, these post-treatment agents are emulsified, thermally emulsified, or dispersed in a water solvent by stirring with a mixer, and a colored cloth is dipped, dried with mangles, dried and heat treated.
Moreover, the friction resistance of a colored cloth can be improved by mix | blending a small amount of resin emulsion as a fixing agent in a post-processing agent. The blending amount with respect to the post-treatment agent is preferably less than 5%, which is preferable because the softness of the texture of the colored fabric is not easily impaired.
The resin emulsion blended into the post-treatment agent as a sticking agent is not particularly limited, but is an acrylic ester resin emulsion, a urethane resin emulsion, an ethylene / vinyl acetate copolymer resin (EVA resin) emulsion, a silicone / acrylic resin emulsion. Polyester resin emulsion or the like can be used, and in order to soften the texture of the colored cloth, the glass transition point of these resin emulsions is preferably 0 ° C. or lower.

  As the ink jet textile printing method, the first embodiment is particularly preferable from the viewpoint of ink aging stability.

  Hereinafter, each component used for this invention is demonstrated in detail.

<Epoxy-based crosslinking agent>
The epoxy-based crosslinking agent has a function as a connecting material that joins the fibers of the fabric and the dye polymer (P) or the dye polymers (P).
The cross-linking agent used in the present invention preferably has at least two epoxy groups. A preferred cross-linking agent having at least two epoxy groups is an epichlorohydrin derivative. For example, ethylene glycol diglycidyl ether, resorcinol diglycidyl ether, neopentyl glycol diglycidyl ether, 1,6-hexanediol diglycidyl ether, halogenated bisphenol A diglycidyl ether, trimethylolpropane polyglycidyl ether, polyglycerin poly Glycidyl ether, glycerin polyglycidyl ether, pentaerythritol polyglycidyl ether, diglycerin polyglycidyl ether, sorbitol polyglycidyl ether, polybutadiene diglycidyl ether, diethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, dipropylene glycol diglycidyl ether, 1, 4-Butanediol diglycidyl A Is a le like.

  Moreover, since an epoxy-type crosslinking agent has the high reactivity derived from an epoxy group, it is the aqueous processing liquid containing the epoxy-type crosslinking agent before giving to a fabric, or the inkjet ink containing an epoxy-type crosslinking agent (henceforth an epoxy collectively) In order to prevent the epoxy group from contributing to unintentional reaction during storage of the liquid containing the system cross-linking agent), an epoxy-based cross-linking agent in an emulsified dispersion state or in a microcapsule is used. Is preferable, and an epoxy-based crosslinking agent encapsulated in microcapsules is particularly preferable. Examples of the epoxy-based crosslinking agent encapsulated in the microcapsule are commercially available as Cellosol MC O-442 (manufactured by Chukyo Yushi Co., Ltd., trade name), Cellosol MC O-444 (trade name, produced by Chukyo Yushi Co., Ltd.) and the like. Can be used.

  The epoxy-based crosslinking agent is preferably diethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, glycerin polyglycidyl ether, diglycerin polyglycidyl ether, polyglycerin polyglycidyl ether, 1,4-butanediol diglycidyl ether, Diethylene glycol diglycidyl ether or 1,4-butanediol diglycidyl ether is more preferable.

  As an epoxy-type crosslinking agent, you may use what is marketed, for example, cellosol MC O-442 and O-444 (epoxy compound inclusion microcapsule water dispersion, the Chukyo Yushi Co., Ltd. make, brand name), SR-14BL, SR-14BJ, SR-PG, SR-2EGS, SR-8EGS, SR-GLG, SR-DGE, SR-4GL, SR-6GL, and SR-SEP (water-soluble polyepoxy crosslinking agent, Sakamoto Yakuhin Kogyo Co., Ltd., trade name).

<Aqueous treatment liquid containing epoxy crosslinking agent>
The aqueous treatment liquid containing an epoxy crosslinking agent preferably contains at least the epoxy crosslinking agent and water.
By containing water, each material contained in the aqueous treatment liquid can be uniformly dispersed or dissolved, and the fabric to which the aqueous treatment liquid is applied can be quickly dried. Furthermore, since generation | occurrence | production of a volatile organic compound (VOC) can be prevented, it is useful from a viewpoint of environmental conservation or safety.
Examples of water include pure water such as ion exchange water, ultrafiltration water, reverse osmosis water, and distilled water, or ultrapure water. In addition, the use of water sterilized by ultraviolet irradiation or addition of hydrogen peroxide is preferable because generation of mold and bacteria can be prevented when the aqueous treatment liquid is stored.

  The content of the epoxy crosslinking agent in the aqueous treatment liquid is preferably 0.05 to 10% by mass, more preferably 0.1 to 10% by mass, based on the total amount of the aqueous treatment liquid. More preferably, it is 10 mass%. By setting it as the said range, in the process of providing the aqueous processing liquid containing an epoxy type crosslinking agent to a fabric, an aqueous processing liquid can be uniformly provided.

  The content of water in the aqueous treatment liquid is preferably 20 to 99.95% by mass, more preferably 30 to 95% by mass, and 50 to 90% by mass with respect to the total amount of the aqueous treatment liquid. More preferably it is.

The aqueous treatment liquid may contain other components. Examples of other components include an aqueous organic solvent, a humectant, a pH adjuster, a chelating agent, a surfactant, a reduction inhibitor, a preservative, and a penetrating agent.
As an aqueous organic solvent, the solvent as described in [B] aqueous organic solvent which can be contained in the aqueous dispersion of the below-mentioned dye polymer (P) can be mentioned.
Examples of the humectant include pepperine, ceramide, hyaluronic acid, glycerin, polyglycerin, urea and the like, and one or more of these can be used in combination.
When the aqueous treatment liquid contains the other components, the content of the other components in the aqueous treatment liquid is preferably 50% by mass or less, and more preferably 20% by mass or less.

<Dye polymer (P)>
The dye polymer (P) used in the present invention is a dye polymer having a repeating unit including a structure derived from a dye, and is a pigment multimer including a structure derived from an arbitrary dye as a repeating unit. The structure derived from the dye is a structure derived from an organic pigment as classified by the color index. For example, azo (monoazo, disazo, trisazo, polyazo), stilbene, carotenoid, diarylmethane, triarylmethane, Examples include xanthene, acridine, quinoline, methine, aniline, indamine, indophenol, azine, oxazine, thiazine, anthraquinone, indigo, quinophthalone, and phthalocyanine. From the viewpoint of coloring power, azo, stilbene, diarylmethane, triarylmethane, xanthene, indophenol, quinophthalone, phthalocyanine, and the like can be preferably used.
As the dye polymer (P), a polymer containing a structure derived from a dye in the side chain is particularly preferably used. Although it does not specifically limit as a polymer which comprises the principal chain in the polymer containing the structure derived from a dye in a side chain, An acrylic polymer, a urethane polymer, or a styrene polymer is used preferably.

In the dye polymer (P), a method for introducing a repeating unit containing a structure derived from a dye is arbitrary, and a polymer may be obtained by polymerizing or copolymerizing a polymerizable dye monomer. After forming, a structure derived from a dye may be introduced by a polymer reaction or the like.
The dye polymer (P) is preferably a dye polymer including a repeating unit represented by the following general formula (1) as a repeating unit including a structure derived from a dye.

In General Formula (1), X ¹ represents a linking group, L ¹ represents a single bond or a divalent linking group, and Dye represents a dye residue obtained by removing one arbitrary hydrogen atom from a dye.

In general formula (1), X ¹ represents a linking group. X ¹ is preferably a linking group formed by polymerization, and preferably a portion corresponding to the main chain formed by the polymerization reaction. That is, X ¹ is preferably a partial structure of the polymer main chain. Examples of X ¹ include a linking group formed by polymerizing a substituted or unsubstituted unsaturated ethylene group, a linking group formed by ring-opening polymerization of a cyclic ether, and the like. Preferably, an unsaturated ethylene group is polymerized. A linking group formed as described above. Specific examples include, but are not limited to, the following linking groups. Incidentally, indicating that it is linked to ^{L 1} at a site indicated by * in the following (X-1) ~ (X -15).

  The repeating unit represented by the general formula (1) is preferably a repeating unit represented by any one of the following general formulas (1-1) to (1-7), and the following general formula (1-1) It is more preferable that it is the repeating unit represented by these.

In the general formulas (1-1) to (1-7), R _{X1 to} R _X21 each represent a hydrogen atom or a substituent, L ¹ represents a single bond or a divalent linking group, and Dye is an arbitrary dye. Represents a dye residue from which one hydrogen atom has been removed.
When R _{X1 to} R _X21 represent a substituent, the substituent is preferably an alkyl group, a halogen atom, a hydroxyl group, a carboxyl group, or a group formed by combining these, more preferably an alkyl group. More preferably, it is a methyl group.
R _X1 , R _X6 , R _X13 , R _X16 , and R _X19 preferably represent a hydrogen atom, a methyl group, a trifluoromethyl group, a carboxymethyl group, a hydroxymethyl group, or a methyloxymethyl group, and a hydrogen atom or methyl More preferably it represents a group.
R _X2 , R _X3 , R _X4 , R _X5 , R _X7 , R _X8 , R _X9 , R _X10 , R _X11 , R _X12 , R _X14 , R _X15 , R _X17 , R _X18 , R _X20 , and R _X21 It preferably represents an atom or a carboxyl group, and more preferably represents a hydrogen atom.

In General Formulas (1) and (1-1) to (1-7), L ¹ represents a single bond or a divalent linking group. The divalent linking group in the case where L ¹ represents a divalent linking group is not limited as long as the effect of the present invention can be obtained, but is a substituted or unsubstituted straight chain having 1 to 30 carbon atoms, Branched or cyclic alkylene group (for example, methylene group, ethylene group, trimethylene group, propylene group, butylene group, etc.), substituted or unsubstituted arylene group having 6 to 30 carbon atoms (for example, phenylene group, naphthalene group, etc.), substituted Alternatively, an unsubstituted heterocyclic linking group, —CH═CH—, —O—, —S—, —NR— (R represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group), —C. (═O) —, —SO—, —SO ₂ — and a linking group formed by linking two or more of these are preferably used. In particular, a linking group represented by any of the following general formulas (2) to (7) is preferably used.
When L ¹ represents a divalent linking group, the divalent linking group may have a substituent (for example, an alkyl group, an aryl group, a hydroxyl group, an acyloxy group, etc.).

Formula (2), the general formula (3), and in the general formula (4), ^{R 2} represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group. R ³ represents a substituent. k represents an integer of 0 to 4. When k is 2 or more, R ³ may be the same or different. In General Formula (5), R ₅₁ and R ₅₂ each independently represent a hydrogen atom or a substituent. t represents an integer of 1 to 10. The t R ₅₁ and R ₅₂ may be the same or different. In General Formula (6), R ⁶¹ , R ⁶² , R ⁶³ and R ⁶⁴ each independently represent a hydrogen atom or a substituent. u and v each independently represent an integer of 1 to 10. u R ⁶¹ and R ⁶² may be the same or different. The v R ⁶³ and R ⁶⁴ may be the same or different. In general formula (7), R ⁷¹ , R ⁷² and R ⁷³ each independently represent a hydrogen atom or a substituent. w represents an integer of 1 to 10. Each of w R ⁷¹ and R ⁷² may be the same or different. * 1 has the general formula ^{X 1} or the general formula in (1) (1-1) to represent the position at which the group bonds to a carbon atom or a nitrogen atom of the polymer backbone in (1-7), * 2, general formula ( This represents the position of binding to Dye in 1).

Examples of the alkyl group, aryl group, or heterocyclic group in the case where R ² represents an alkyl group, an aryl group, or a heterocyclic group include an alkyl group, an aryl group, or a hetero group described in Substituent Group A described later. A cyclic group is mentioned.
Examples of the substituent represented by R ³ include a substituent selected from the substituent group A described later.

  In General Formulas (1) and (1-1) to (1-7), Dye represents a dye residue obtained by removing one arbitrary hydrogen atom from a dye. Dye is not limited as long as it exhibits the effects of the present invention, but represents a dye residue obtained by removing one hydrogen atom from a dye represented by any one of the following general formulas (M1) to (M4). Is more preferable.

In General Formula (M1), R ^{101 to} R ¹¹⁰ each independently represent a hydrogen atom or a substituent.

In General Formula (M2), R ^{201 to} R ²¹⁵ each independently represent a hydrogen atom or a substituent, X ²⁰¹ represents a monovalent anion, and n ²⁰¹ represents 0 or 1.

In General Formula (M3), R ^{301 to} R ³¹⁷ each independently represent a hydrogen atom or a substituent, X ³⁰¹ represents a monovalent anion, and n ³⁰¹ represents 0 or 1.

In General Formula (M4), R ^{401 to} R ⁴⁰⁷ each independently represent a hydrogen atom or a substituent.

R ^{101 to} R ¹¹⁰ in General Formula (M1), R ^{201 to} R ²¹⁵ in General Formula (M2), R ^{301 to} R ³¹⁷ in General Formula (M3), and R ⁴⁰¹ to R in General Formula (M4) Examples of the substituent when R ⁴⁰⁷ represents a substituent include a substituent selected from the following substituent group A.

(Substituent group A)
The substituents included in Substituent Group A are shown below.
A halogen atom (for example, a fluorine atom, a chlorine atom, a bromine atom), an alkyl group (preferably having 1 to 48 carbon atoms, more preferably 1 to 24 carbon atoms, a linear, branched, or cyclic alkyl group, Methyl, ethyl, propyl, isopropyl, butyl, t-butyl, pentyl, hexyl, heptyl, octyl, 2-ethylhexyl, dodecyl, hexadecyl, cyclopropyl, cyclopentyl, A cyclohexyl group, a 1-norbornyl group, a 1-adamantyl group), an alkenyl group (preferably an alkenyl group having 2 to 48 carbon atoms, more preferably 2 to 18 carbon atoms, such as vinyl group, allyl group, 3-butene- 1-yl group), an aryl group (preferably an aryl group having 6 to 48 carbon atoms, more preferably 6 to 24 carbon atoms, An aryl group, a naphthyl group), a heterocyclic group (preferably a C1-C32, more preferably a C1-C18 heterocyclic group such as a 2-thienyl group, a 4-pyridyl group, a 2-furyl group, 2-pyrimidinyl group, 1-pyridyl group, 2-benzothiazolyl group, 1-imidazolyl group, 1-pyrazolyl group, benzotriazol-1-yl group), silyl group (preferably having 3 to 38 carbon atoms, more preferably carbon number) 3 to 18 silyl groups, for example, trimethylsilyl group, triethylsilyl group, tributylsilyl group, t-butyldimethylsilyl group, t-hexyldimethylsilyl group), hydroxyl group, cyano group, nitro group, alkoxy group (preferably A linear, branched or cyclic alkoxy group having 1 to 48 carbon atoms, more preferably 1 to 24 carbon atoms, such as a methoxy group, Toxyl group, 1-butoxy group, 2-butoxy group, isopropoxy group, t-butoxy group, dodecyloxy group, cyclopentyloxy group, cyclohexyloxy group), aryloxy group (preferably having 6 to 48 carbon atoms, more preferably An aryloxy group having 6 to 24 carbon atoms, such as a phenoxy group or a 1-naphthoxy group), a heterocyclic oxy group (preferably having a carbon number of 1 to 32, more preferably a heterocyclic oxy group having 1 to 18 carbon atoms, For example, a 1-phenyltetrazol-5-oxy group, a 2-tetrahydropyranyloxy group), a silyloxy group (preferably a silyloxy group having 1 to 32 carbon atoms, more preferably 1 to 18 carbon atoms, for example, a trimethylsilyloxy group , T-butyldimethylsilyloxy group, diphenylmethylsilyloxy group), acyloxy group ( Preferably, it is an acyloxy group having 2 to 48 carbon atoms, more preferably 2 to 24 carbon atoms, such as an acetoxy group, pivaloyloxy group, benzoyloxy group, dodecanoyloxy group), an alkoxycarbonyloxy group (preferably having 2 to 2 carbon atoms). 48, more preferably a linear, branched or cyclic alkoxycarbonyloxy group having 2 to 24 carbon atoms, such as ethoxycarbonyloxy group, t-butoxycarbonyloxy group, cyclohexyloxycarbonyloxy group), aryloxycarbonyl An oxy group (preferably an aryloxycarbonyloxy group having 7 to 32 carbon atoms, more preferably 7 to 24 carbon atoms, such as a phenoxycarbonyloxy group), a carbamoyloxy group (preferably having 1 to 48 carbon atoms, more preferably Is a C1-C24 carba Yloxy group, for example, N, N-dimethylcarbamoyloxy group, N-butylcarbamoyloxy group, N-phenylcarbamoyloxy group, N-ethyl-N-phenylcarbamoyloxy group), sulfamoyloxy group (preferably carbon A sulfamoyloxy group having 1 to 32, more preferably 1 to 24 carbon atoms, for example, N, N-diethylsulfamoyloxy group, N-propylsulfamoyloxy group), alkylsulfonyloxy group (preferably Is an alkylsulfonyloxy group having 1 to 38 carbon atoms, more preferably 1 to 24 carbon atoms, such as a methylsulfonyloxy group, a hexadecylsulfonyloxy group, a cyclohexylsulfonyloxy group, or an arylsulfonyloxy group (preferably having a carbon number). 6 to 32, more preferably 6 to 2 carbon atoms An arylsulfonyloxy group of, for example, a phenylsulfonyloxy group), an acyl group (preferably having 1 to 48 carbon atoms, more preferably 1 to 24 carbon atoms, a linear, branched, or cyclic acyl group, for example, Formyl group, acetyl group, pivaloyl group, benzoyl group, tetradecanoyl group, cyclohexanoyl group), alkoxycarbonyl group (preferably having 2 to 48 carbon atoms, more preferably 2 to 24 carbon atoms, linear, branched, Or a cyclic alkoxycarbonyl group such as a methoxycarbonyl group, an ethoxycarbonyl group, an octadecyloxycarbonyl group, a cyclohexyloxycarbonyl group, a 2,6-di-tert-butyl-4-methylcyclohexyloxycarbonyl group), an aryloxycarbonyl Group (preferably having 7 to 32 carbon atoms, more preferably Is an aryloxycarbonyl group having 7 to 24 carbon atoms, such as a phenoxycarbonyl group, and a carbamoyl group (preferably a carbamoyl group having 1 to 48 carbon atoms, more preferably 1 to 24 carbon atoms, such as a carbamoyl group, N , N-diethylcarbamoyl group, N-ethyl-N-octylcarbamoyl group, N, N-dibutylcarbamoyl group, N-propylcarbamoyl group, N-phenylcarbamoyl group, N-methylN-phenylcarbamoyl group, N, N- Dicyclohexylcarbamoyl group), amino group (preferably an amino group having 32 or less carbon atoms, more preferably 24 or less carbon atoms, such as amino group, methylamino group, N, N-dibutylamino group, tetradecylamino group) , 2-ethylhexylamino group, cyclohexylamino group), anilino group (preferably Or an anilino group having 6 to 32 carbon atoms, more preferably 6 to 24 carbon atoms, such as an anilino group or an N-methylanilino group, or a heterocyclic amino group (preferably having 1 to 32 carbon atoms, more preferably 1 to 18 carbon atoms). A heterocyclic amino group such as a 4-pyridylamino group, a carbonamide group (preferably a carbonamide group having 2 to 48 carbon atoms, more preferably 2 to 24 carbon atoms such as an acetamido group, a benzamide group, a tetradecanamide group, Pivaloylamide group, cyclohexaneamide group), ureido group (preferably ureido group having 1 to 32 carbon atoms, more preferably 1 to 24 carbon atoms, for example, ureido group, N, N-dimethylureido group, N-phenylureido group) ), An imide group (preferably an imide group having 36 or less carbon atoms, more preferably 24 or less carbon atoms, such as N- A succinimide group, N-phthalimido group), an alkoxycarbonylamino group (preferably a linear, branched or cyclic alkoxycarbonylamino group having 2 to 48 carbon atoms, more preferably 2 to 24 carbon atoms, for example, methoxycarbonyl Amino group, ethoxycarbonylamino group, t-butoxycarbonylamino group, octadecyloxycarbonylamino group, cyclohexyloxycarbonylamino group), aryloxycarbonylamino group (preferably having 7 to 32 carbon atoms, more preferably 7 to 24 carbon atoms). An aryloxycarbonylamino group such as a phenoxycarbonylamino group, a sulfonamide group (preferably a sulfonamide group having 1 to 48 carbon atoms, more preferably 1 to 24 carbon atoms, such as a methanesulfonamide group, butane Sulfonami Group, benzenesulfonamide group, hexadecanesulfonamide group, cyclohexanesulfonamide group), sulfamoylamino group (preferably a sulfamoylamino group having 1 to 48 carbon atoms, more preferably 1 to 24 carbon atoms, N, N-dipropylsulfamoylamino group, N-ethyl-N-dodecylsulfamoylamino group), azo group (preferably having 1 to 32 carbon atoms, more preferably having 1 to 24 carbon atoms, For example, a phenylazo group, a 3-pyrazolylazo group), an alkylthio group (preferably a linear, branched, or cyclic alkylthio group having 1 to 48 carbon atoms, more preferably 1 to 24 carbon atoms, such as a methylthio group, Ethylthio group, octylthio group, cyclohexylthio group), arylthio group (preferably having 6 to 48 carbon atoms, more preferred) Is an arylthio group having 6 to 24 carbon atoms, such as a phenylthio group, and a heterocyclic thio group (preferably having 1 to 32 carbon atoms, more preferably a heterocyclic thio group having 1 to 18 carbon atoms, such as 2-benzo A thiazolylthio group, a 2-pyridylthio group, a 1-phenyltetrazolylthio group), an alkylsulfinyl group (preferably a C1-C32, more preferably a C1-C24 linear, branched or cyclic alkyl) A sulfinyl group, for example, dodecanesulfinyl group), an arylsulfinyl group (preferably an arylsulfinyl group having 6 to 32 carbon atoms, more preferably an arylsulfinyl group having 6 to 24 carbon atoms, for example, a phenylsulfinyl group), an alkylsulfonyl group (preferably C1-C48, more preferably C1-C24 linear, branched, or cyclic alkylsulfonyl Group, for example, methylsulfonyl group, ethylsulfonyl group, propylsulfonyl group, butylsulfonyl group, isopropylsulfonyl group, 2-ethylhexylsulfonyl group, hexadecylsulfonyl group, octylsulfonyl group, cyclohexylsulfonyl group), arylsulfonyl group (preferably Is an arylsulfonyl group having 6 to 48 carbon atoms, more preferably 6 to 24 carbon atoms, such as a phenylsulfonyl group or 1-naphthylsulfonyl group, a sulfamoyl group (preferably having 32 or less carbon atoms, more preferably 24 carbon atoms). The following sulfamoyl groups include, for example, sulfamoyl group, N, N-dipropylsulfamoyl group, N-ethyl-N-dodecylsulfamoyl group, N-ethyl-N-phenylsulfamoyl group, N-cyclohexylsulfa Moyl group ), Sulfo group, phosphonyl group (preferably phosphonyl group having 1 to 32 carbon atoms, more preferably 1 to 24 carbon atoms, such as phenoxyphosphonyl group, octyloxyphosphonyl group, phenylphosphonyl group), phosphinoyl An amino group (preferably a phosphinoylamino group having 1 to 32 carbon atoms, more preferably 1 to 24 carbon atoms, such as a diethoxyphosphinoylamino group or a dioctyloxyphosphinoylamino group).

R ^{101 to} R ¹¹⁰ in General Formula (M1), R ^{201 to} R ²¹⁵ in General Formula (M2), R ^{301 to} R ³¹⁷ in General Formula (M3), and R ⁴⁰¹ to R in General Formula (M4) When R ⁴⁰⁷ represents a substituent, the substituent may further have a substituent when the substituent is a substitutable group, and the substituent is a substituent selected from the above substituent group A. Group, and when it has two or more substituents, these substituents may be the same or different. R ^{101 to} R ^{110 in} the general formula (M1), R ^{201 to} R ^{215 in} the general formula (M2), R ^{301 to} R ³¹⁷ in the general formula (M3), and R in the general formula (M4). ^{When 401 to} R ⁴⁰⁷ represent a substituent, at least two of the substituents may be bonded to each other to form a 5-membered, 6-membered, or 7-membered saturated ring, or an unsaturated ring. When the formed 5-membered, 6-membered, and 7-membered rings are further substitutable groups, they may further have a substituent, and the substituent is selected from the above substituent group A. When the substituent is substituted with two or more substituents, these substituents may be the same or different.

R ¹⁰¹ in the general formula (M1) is preferably a hydrogen atom or a hydroxyl group, and more preferably a hydroxyl group.
R ¹⁰² in formula (M1) is preferably a hydrogen atom, a halogen atom, a carboxyl group, or an alkoxycarbonyl group having 2 to 20 carbon atoms, more preferably a hydrogen atom, a halogen atom, or a carboxyl group, and particularly preferably. Is a hydrogen atom, a bromine atom, or a carboxyl group.
R ¹⁰⁴ in the general formula (M1) is preferably a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, more preferably a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 12 carbon atoms. And particularly preferably an unsubstituted alkyl group having 1 to 8 carbon atoms.
R ¹⁰⁸ in the general formula (M1) is preferably a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a carboxyl group, a substituted or unsubstituted alkoxycarbonyl group having 2 to 20 carbon atoms, A substituted or unsubstituted carbamoyl group is represented.
As R ^<103> , R ^<105> , and R ^{<106 >} in general formula (M1), Preferably each independently, a hydrogen atom, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C6-C10 An aryl group, a halogen atom, more preferably a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 12 carbon atoms, and particularly preferably a hydrogen atom.
As R ^<107> , R ^<109> and R ^{<110 >} in general formula (M1), Preferably each independently, a hydrogen atom, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C6-C10 An aryl group, a halogen atom, a carboxyl group, a substituted or unsubstituted alkoxycarbonyl group having 2 to 20 carbon atoms, a substituted or unsubstituted carbamoyl group, more preferably a hydrogen atom or a halogen atom, particularly preferably hydrogen. Atom, chlorine atom, bromine atom.

R ²⁰¹ , R ²⁰⁵ , R ²⁰⁶ and R ²¹⁰ in formula (M2) are preferably each independently a hydrogen atom, a halogen atom or a hydroxyl group, more preferably a hydrogen atom.
R ²⁰² and R ²⁰⁹ in the general formula (M2) are preferably each independently a hydrogen atom, a halogen atom, a hydroxyl group, or a sulfo group, more preferably a hydrogen atom or a sulfo group, and particularly preferably hydrogen. Is an atom.
R ²⁰³ , R ²⁰⁴ , R ²⁰⁷ and R ²⁰⁸ in formula (M2) are preferably each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted carbon number of 6 A hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 18 carbon atoms, a substituted or unsubstituted aryl group having 6 to 10 carbon atoms, and particularly preferably a hydrogen atom. , A substituted or unsubstituted alkyl group having 2 to 12 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 10 carbon atoms.
R ²¹¹ in the general formula (M2) is preferably a carboxylate group (—CO ₂ ^— ), a sulfonate group (—SO ₃ ^— ), a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted carbamoyl group, substituted or An unsubstituted sulfamoyl group, more preferably a sulfonate group, a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted carbamoyl group, a substituted or unsubstituted sulfamoyl group, particularly preferably a sulfonate group or an alkoxycarbonyl group. It is a group.
R ²¹² , R ²¹³ , R ²¹⁴ , and R ²¹⁵ in formula (M2) are preferably each independently a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a carboxyl group, Substituted or unsubstituted alkoxycarbonyl group, substituted or unsubstituted carbamoyl group, sulfo group, substituted or unsubstituted sulfamoyl group, substituted or unsubstituted amino group, more preferably each independently a hydrogen atom, halogen atom, A carboxyl group, a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted carbamoyl group, a sulfo group, a substituted or unsubstituted sulfamoyl group, a substituted or unsubstituted amino group, particularly preferably each independently a hydrogen atom, Substituted or unsubstituted alkoxycarbonyl group, substituted or unsubstituted A carbamoyl group, a sulfo group, a substituted or unsubstituted sulfamoyl group, and a substituted or unsubstituted amino group.
R ²¹⁴ and R ²¹⁵ in formula (M2) are also preferably bonded to each other to form a ring.
X ²⁰¹ in the general formula (M2) is preferably a chlorine ion, acetate ion, triflate ion, tetrafluoroborate ion, tetrakis (pentafluorophenyl) borate ion, perchlorate ion, or bis (trifluoromethanesulfonyl) imide anion. More preferred are tetrakis (pentafluorophenyl) borate ion and bis (trifluoromethanesulfonyl) imide anion.
N201 in the general formula (M2) is preferably 0 or 1, more preferably 0.

In general formula (M3), R ³⁰¹ , R ³⁰² , R ³⁰⁵ , R ³⁰⁶ , R ³⁰⁷ , R ³⁰⁸ , R ³¹¹ , R ³¹² are preferably each independently a hydrogen atom, substituted or unsubstituted C 1-20. An alkyl group, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, a halogen atom, and a hydroxyl group, more preferably a hydrogen atom, a halogen atom, and a hydroxyl group, and particularly preferably a hydrogen atom.
R ³⁰³ , R ³⁰⁴ , R ³⁰⁹ and R ³¹⁰ in the general formula (M3) are preferably each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted carbon number 6 to 20 represents an aryl group, more preferably a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 18 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, particularly preferably a hydrogen atom or carbon. These are an alkyl group having 1 to 12 carbon atoms and an aryl group having 6 to 10 carbon atoms.
R ³¹³ in the general formula (M3) is preferably a carboxylate group, a sulfonate group, a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted carbamoyl group, or a substituted or unsubstituted sulfamoyl group, more preferably A sulfonate group, a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted carbamoyl group, and a substituted or unsubstituted sulfamoyl group, particularly preferably a sulfonate group and an alkoxycarbonyl group.
R ³¹⁴ in the general formula (M3) is preferably a hydrogen atom, a halogen atom, a hydroxyl group, a sulfo group, a carboxyl group, or a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, more preferably a hydrogen atom or a halogen atom. An atom or a hydroxyl group, particularly preferably a hydrogen atom.
R ³¹⁵ in formula (M3) is preferably a hydrogen atom, a substituted or unsubstituted amino group, a carboxyl group, a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted carbamoyl group, a sulfo group, substituted or unsubstituted A sulfamoyl group and a hydroxyl group, more preferably a hydrogen atom, a substituted or unsubstituted amino group, a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted carbamoyl group, a substituted or unsubstituted sulfamoyl group, Particularly preferred are a substituted or unsubstituted amino group and a substituted or unsubstituted sulfamoyl group.
R ³¹⁶ and R ³¹⁷ in formula (M3) are preferably each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, hydroxyl Group, a halogen atom, more preferably a hydrogen atom, a halogen atom, or a hydroxyl group, and particularly preferably a hydrogen atom.
R ³¹⁶ and R ³¹⁷ in formula (M3) are also preferably bonded to each other to form a ring.
X ³⁰¹ in the general formula (M3) is preferably a chlorine ion, acetate ion, triflate ion, tetrafluoroborate ion, tetrakis (pentafluorophenyl) borate ion, perchlorate ion, bis (trifluoromethanesulfonyl) imide anion, More preferred are tetrakis (pentafluorophenyl) borate ion and bis (trifluoromethanesulfonyl) imide anion.
N301 in the general formula (M3) is preferably 0 or 1, more preferably 0.

R ⁴⁰¹ in the general formula (M4) is preferably a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, a substituted or unsubstituted acyl group. And more preferably a substituted or unsubstituted alkyl group having 1 to 18 carbon atoms, and particularly preferably a substituted or unsubstituted alkyl group having 1 to 16 carbon atoms.
R ⁴⁰² in formula (M4) is preferably a hydrogen atom, a substituted or unsubstituted amino group, more preferably a substituted or unsubstituted amino group, and particularly preferably a substituted or unsubstituted acylamino group. .
R ⁴⁰³ , R ⁴⁰⁶ and R ⁴⁰⁷ in formula (M4) are preferably each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a hydroxyl group, a substituted or unsubstituted carbon number of 1 -20 alkoxy groups and halogen atoms, more preferably hydrogen atoms, substituted or unsubstituted alkoxy groups having 1 to 20 carbon atoms, and particularly preferably hydrogen atoms.
R ⁴⁰⁴ and R ⁴⁰⁵ in formula (M4) are preferably a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, and more preferably Is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, particularly preferably a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms.

  Specific examples of the dyes represented by the above general formula (M1), general formula (M2), general formula (M3), and general formula (M4) are shown below. Me represents a methyl group, Et represents an ethyl group, and i-Pr represents an isopropyl group.

  The dye represented by the general formula (M1), the dye represented by the general formula (M2), the dye represented by the general formula (M3), and the dye represented by the general formula (M4) are conventionally known methods. (For example, Japanese Patent Publication No. 7-49583, Japanese Patent Publication No. 5-5257, Japanese Patent No. 5715380, WO2010 / 110199, WO2015 / 016265, etc.). The synthesis method is specifically illustrated in the examples.

The dye polymer (P) preferably further has a group that reacts with an epoxy group from the viewpoint of reactivity with the epoxy-based crosslinking agent.
Examples of the group that reacts with the epoxy group include a carboxyl group, a hydroxyl group, and an amino group. Among these, a carboxyl group or an amino group is particularly preferable, and a carboxyl group is more preferable.
When the dye polymer (P) has a carboxyl group, the product obtained by reacting this carboxyl group with an epoxy crosslinking agent has a carboxyl group converted to an ester group, resulting in a decrease in water solubility. As a result, the colored fabric obtained is significantly improved in fastness to water.

(Molecular weight of dye polymer (P))
In the present invention, since the dye polymer (P) is used in a state of being dispersed in water, the dye polymer (P) has an optimum molecular weight range with respect to dispersibility. Re-aggregation hardly occurs. On the other hand, it is difficult to dissolve in water and an aqueous organic solvent as long as it is at least the lower limit of the optimum molecular weight range. Although it varies depending on the type of dye polymer (P) used, it is generally preferable to use a polymer having a weight average molecular weight of 3,000 to 2,000,000, preferably 3,000 to 1,000,000. Are more preferable, and those of 3,000 to 200,000 are particularly preferable.
The weight average molecular weight of the dye polymer (P) can be calculated from gel permeation chromatography (GPC) measurement. In this specification, unless otherwise specified, GPC uses HLC-8220GPC (manufactured by Tosoh Corp.), and the column is measured by TSKgel SuperHZM-H, TSKgel SuperHZ4000, TSKgel SuperHZ200 (manufactured by Tosoh Corp.), and the number average molecular weight. Was calculated by polystyrene conversion. The carrier may be selected as appropriate, but NMP (N-methylpyrrolidone) was used as long as it was soluble.

(Structure of dye polymer (P))
The dye polymer (P) may have a repeating unit including a structure derived from a dye as an essential structure, but a group that reacts with an epoxy group is introduced from the viewpoint of reactivity with an epoxy-based crosslinking agent. It is preferable. In addition, from the viewpoint of dispersibility in water, hydrophobic groups (electrically neutral nonpolar groups that have a low affinity with water) and ionic groups (electrically ionic polar groups that are More preferably, a repeating unit containing at least one kind of group having a high affinity) is introduced. The molecular structure of the dye polymer (P) may be either linear or branched, may be random, alternating, periodic, or block, and may be a graft polymer designed with a trunk and branch structure. .
As a method for forming the dye polymer (P), a method such as so-called copolymerization is preferable from the viewpoint of design flexibility. Examples of the copolymer component include the following hydrophobic group-containing monomers, anionic group-containing monomers, cationic group-containing monomers, and other functional monomers.

  The content of the repeating unit having a structure derived from the dye in the dye polymer (P) with respect to all repeating units is preferably 10 to 90% by mass, more preferably 25 to 90% by mass, and particularly preferably 50 to 90% by mass. 80% by mass. If the content rate of the repeating unit which has a structure derived from dye is 10 mass% or more, the coloring power per unit mass will improve and the dyeing density to a fabric will become high. Moreover, it is easy to adjust molecular weight to an appropriate range at the time of dye polymer synthesis as it is 90 mass% or less.

The group that reacts with the epoxy group in the dye polymer (P) may be contained in a repeating unit having a structure derived from a dye, or may be contained in other repeating units, and may be contained in both repeating units. May be.
The content of the group that reacts with the epoxy group in the dye polymer (P) is preferably 0.01 to 4 mmol / g in the dye polymer, more preferably 0.02 to 2 mmol / g, and still more preferably. 0.05-1 mmol / g. By setting the content of the group that reacts with the epoxy group to 0.01 mmol / g or more, the interaction (crosslinking reaction) between the dye polymer (P) and the epoxy-based crosslinking agent becomes sufficient, and at 4 mmol / g or less. If so, the dispersion stability of the ink is sufficient.

  The repeating units other than the repeating unit having a structure derived from a dye that can be introduced into the dye polymer (P) will be described below.

(Hydrophobic group-containing monomer)
Examples of the hydrophobic group-containing monomer include vinyl monomers such as styrene monomers, phenyl group-containing (meth) acrylates, (meth) acrylic acid alkyl esters, alkyl vinyl ethers, (meth) acrylonitrile; Urethane group-containing vinyl monomer formed from polyisocyanate and polyol or polyamine; epoxy group-containing vinyl monomer formed from epichlorohydrin and bisphenol; polyvalent carboxylic acid and polyalcohol etc. are formed from monomers Ester group-containing vinyl monomers; silicone group-containing vinyl monomers formed from organopolysiloxanes and the like.
Preferably, styrene, benzyl methacrylate, methyl methacrylate, 2-ethylhexyl methacrylate, isobornyl methacrylate, 2-hydroxyethyl methacrylate, 2-isocyanatoethyl methacrylate, 2-[(3,5-dimethylpyrazolyl) carbonylamino] ethyl methacrylate 2- (0- [1′-methylpropylideneamino] carboxyamino) ethyl methacrylate.

  Next, the ionic group includes an anionic group and a cationic group. Examples of monomers that give these ionic groups include the following.

(Anionic group-containing monomer)
As the anionic group-containing monomer, the following unsaturated carboxylic acid monomer, unsaturated sulfonic acid monomer, unsaturated phosphoric acid monomer, or an anhydride or salt thereof can be used. Examples of the unsaturated carboxylic acid monomer include (meth) acrylic acid, crotonic acid, sorbic acid, maleic acid, fumaric acid, itaconic acid, monoalkyl esters of unsaturated dicarboxylic acid, and anhydrides and salts thereof. Is mentioned.
Acrylic acid, methacrylic acid, 2-acryloyloxyethyl succinic acid, and 2-methacryloyloxyethyl succinic acid are preferable.
Examples of the unsaturated sulfonic acid monomer include styrene sulfonic acid, vinyl sulfonic acid, 2-acrylamido-2-methylpropane sulfonic acid, sulfuric acid ester of 2-hydroxyalkyl (meth) acrylate, or salts thereof. Is mentioned.
Examples of the unsaturated phosphoric acid monomer include vinylphosphonic acid, phosphoric acid ester of hydroxyalkyl (meth) acrylate (having 2 to 6 carbon atoms), and (meth) acrylic acid alkylphosphonic acid.
Styrene sulfonic acid and 2-acrylamido-2-methylpropane sulfonic acid are preferred.

(Cationic group-containing monomer)
As the cationic group-containing monomer, the following unsaturated amine-containing monomer, unsaturated ammonium salt-containing monomer, and the like can be used. Examples of the unsaturated amine-containing monomer include vinylamine, allylamine, vinylpyridine, methylvinylpyridine, N, N-dialkylaminostyrene, N, N-dialkylaminoalkyl (meth) acrylate, and dialkylaminoethyl vinyl ether. It is done.
Examples of the unsaturated ammonium salt-containing monomer include those obtained by quaternizing the unsaturated tertiary amine-containing monomer with a quaternizing agent.

[Other functional monomers]
In addition to the above copolymerization method, for example, urethane polymerization of a urethane-forming group-containing monomer into which an ionic group has been introduced in advance, or epoxy polymerization of an epoxy-forming group-containing monomer into which an ionic group has been introduced in advance. This method can also be adopted. Moreover, after polymerizing the basic polymer, the target ionic group is introduced to obtain the dye polymer (P) of the present invention. In addition, other components may be contained, for example, polyethylene oxide having a hydroxyl group or an amide group without ionicity, a polyol or a hydroxyalkyl ester-containing monomer, acrylamide, hydroxyalkyl acrylate, vinyl acetate. , Vinyl alcohol, N-ethylmethacrylamide, N-isopropylacrylamide, N-vinylpyrrolidone and the like can be copolymerized as monomers.

Specific examples of the dye polymer (P) preferably used in the present invention are shown below, but are not limited thereto. * 1 in L ¹ represents the bonding position with the carbon atom of the polymer main chain, * 2 represents the bonding position with Dye, and * 3 in Dye represents the bonding position with L ¹ .

<Aqueous dispersion of dye polymer (P)>
The aqueous dispersion of the dye polymer (P) contains at least water and [A] the dye polymer (P), and preferably contains [B] an aqueous organic solvent. In addition, depending on the method for producing the aqueous dispersion of the dye polymer (P), [C] either a low molecular surfactant or a high molecular dispersant is used in combination or not (so-called self-dispersing). It may be.

  In addition, in the aqueous dispersion of the dye polymer (P) used in combination with the above [C], [A] the dye polymer (P), and [C] the low molecular surfactant or the high molecular dispersant. It is preferable from the viewpoint of the reactivity with an epoxy-type crosslinking agent that the group which reacts with an epoxy group exists in at least one. That is, the aqueous dispersion contains a low molecular surfactant or a high molecular dispersant having a group that reacts with an epoxy group, or the dye polymer (P) has a group that reacts with an epoxy group. Is preferred.

[A] Dye polymer (P)
In the present invention, the above dye polymer (P) is used not in a state dissolved in water but in a state dispersed in water (water dispersion).
Water is not particularly limited, and pure water such as ion exchange water, ultrafiltration water, reverse osmosis water, distilled water, or ultrapure water can be used. Further, water sterilized by ultraviolet irradiation or addition of hydrogen peroxide can also be used. It is preferable to use ultrapure water as water.

(1-1) Dispersibility When the dye polymer (P) is dispersed in water, the dye polymer (P) is water as a property of the dye polymer (P) itself or by adsorption with the low molecular surfactant or polymer dispersant used in combination. It is easy to become familiar (easy to get wet), and prevents electrostatic particles (repulsive force) and steric repulsion from reaggregating the fine particles of the dye polymer, and has a function of suppressing sedimentation.

(1-2) Average particle diameter It is preferable that the dye polymer (P) is in the form of particles in the aqueous dispersion. The average particle diameter of the particulate dye polymer in the aqueous dispersion of the dye polymer (P) is preferably 50 to 500 nm, more preferably 50 to 300 nm, and particularly preferably 50 to 200 nm. Within this range, the fabric can be directly printed by the ink jet method.
The value measured using the particle size distribution measuring apparatus (Nanotrack UPA EX150, Nikkiso Co., Ltd. make, brand name) was used for the average particle diameter in this specification.

The content of the dye polymer (P) in the aqueous dispersion is preferably 0.1 to 40% by mass, more preferably 1 to 30% by mass, and particularly preferably 3 to 25% by mass. Within this range, a high-density dyed cloth can be obtained in printing while ensuring storage stability as an inkjet ink.
The water content in the water dispersion is preferably 50 to 95% by mass, more preferably 55 to 90% by mass, and particularly preferably 60 to 90% by mass. Within this range, the stability of the aqueous dispersion and the ejection stability as an inkjet ink can be imparted. The stability of the aqueous dispersion indicates that precipitation or the like hardly occurs.

[B] Aqueous organic solvent As the aqueous organic solvent, water solubility at 25 ° C. is preferably 10 g / 100 g-H ₂ O or more, more preferably 20 g / 100 g-H ₂ O, and water and an optional solvent. Those mixed in proportions are particularly preferred. Examples of the aqueous organic solvent include alcohol solvents, amide solvents, and nitrile solvents. For example, methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, tert-butanol, trimethylolpropane, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, butylene glycol, 1,2,6 -Hexanetriol, thioglycol, hexylene glycol, glycerin, diglycerin, 2-pyrrolidone, N-methyl-2-pyrrolidone, 1,5-pentanediol, 1,6-hexanediol, ethylene glycol monoethyl ether, Examples thereof include ethylene glycol monobutyl ether and acetonitrile. Preferred are trimethylolpropane, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, glycerin, 2-pyrrolidone, 1,5-pentanediol, 1,6-hexanediol, ethylene glycol monobutyl ether, more preferably ethylene. Glycol, diethylene glycol, triethylene glycol, propylene glycol, glycerin, 2-pyrrolidone and ethylene glycol monobutyl ether are preferred, with ethylene glycol, glycerin and 2-pyrrolidone being particularly preferred.
The content of the aqueous organic solvent in the aqueous dispersion is preferably 5 to 50% by mass, more preferably 5 to 40% by mass, and particularly preferably 10 to 30% by mass. Within this range, the stability of the aqueous dispersion and the ejection stability as an inkjet ink can be imparted.

[C] Low molecular surfactant or polymer dispersant As the low molecular surfactant or polymer dispersant, a low molecular surfactant or polymer dispersant having a hydrophobic group and an ionic group is preferable. And preferably have the following characteristics.

(2-1) Dispersibility The low molecular surfactant or polymer dispersant is added when the dye polymer (P) is dispersed, so that the low molecular surfactant or polymer dispersant is the dye polymer. Dye polymer fine particles adsorbed on the surface and blended (wet) with water, and ground by mechanical action, prevent re-aggregation of fine particles by electrostatic repulsion (repulsive force) and steric repulsion, and function to suppress sedimentation. Have.

(2-2) Molecular weight In the case of a polymer type dispersant, there is an optimum molecular weight for the dispersion effect with respect to the dye polymer (P), and when the molecular weight increases beyond the molecular weight, it is between the dye polymer and the dye polymer. It causes bridging and causes aggregation of the dye polymer. On the other hand, if the molecular weight is smaller than the optimum molecular weight, desorption from the dye polymer is likely to occur, and the effect as a dispersant is reduced. Further, when the molecular weight is small, the effect as a fixing agent after crosslinking is weakened. Accordingly, it is preferable to use a polymer type dispersant having a weight average molecular weight of 2,000 to 50,000. The weight average molecular weight of the polymeric dispersant is measured by the same method as the weight average molecular weight of the dye polymer.

(2-3) Structure and form The low molecular weight surfactant or polymer type dispersant is composed of a hydrophobic group (an electrically neutral nonpolar group having a low affinity with water) and an ionic group (electrical). It is preferable to have an ionic polar group having high affinity with water. The structure may be linear or branched. In the case of a high molecular weight surfactant, the structure may be random, alternating, periodic, or block, and may be a graft polymer designed with a trunk and branch structure.

The low molecular surfactant or polymer dispersant having the above structure preferably further has a group that reacts with an epoxy group. The group that reacts with the epoxy group in the low molecular surfactant or polymer dispersant interacts with the epoxy crosslinking agent (crosslinking reaction), and the low molecular surfactant or polymer dispersant is Thus, the interaction between the dye polymer (P) and the epoxy crosslinking agent is possible.
Examples of the group that reacts with the epoxy group include a carboxyl group, a hydroxyl group, and an amino group. Among these, a carboxyl group or an amino group is particularly preferable, and a carboxyl group is more preferable.

  The low molecular surfactant and the polymer dispersant can be used in any form of an aqueous solution, a dispersion, or an emulsion when mixed with water or an aqueous organic solvent.

(2-4) Formation method and acquisition method As the low molecular surfactant, for example, the following can be used.
Examples of the cationic surfactant include aliphatic amine salts, aliphatic quaternary ammonium salts, benzalkonium salts, benzethonium chloride, pyridinium salts, and imidazolinium salts. Examples of the anionic surfactant include fatty acid soap (for example, sodium oleate), N-acyl glutamate, alkyl sulfonate, alkyl benzene sulfonate, alkyl sulfoacetate, sulfated oil, higher alcohol sulfate ester And alkyl phosphate ester salts. Examples of amphoteric surfactants include carboxybetaine type, sulfobetaine type, aminocarboxylate, and imidazolinium betaine. A suitable example is an amine oxide type such as N, N-dimethyl-N-alkylamine oxide.
Nonionic surfactants include, for example, polyoxyethylene alkyl ether, polyoxyethylene lanolin derivative, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene glycerin fatty acid ester, polyethylene glycol fatty acid ester, polyglycerin fatty acid ester, sorbitan fatty acid Examples include esters, propylene glycol fatty acid esters, and acetylene glycols. A suitable example is SURFYNOLS (Air Products & Chemicals), which is an acetylene-based polyoxyethylene oxide surfactant. In addition, pages (37) to (38) of JP-A-59-157,636, Research Disclosure No. Those listed as surfactants in 308119 (1989) can also be used.
The content of the low molecular surfactant is preferably in the range of 0.001 to 5.0% by mass with respect to the total mass of the aqueous dispersion, and the surface tension of the aqueous dispersion is arbitrarily adjusted in such a range. It is preferable to do.

The polymeric dispersant can be produced by copolymerizing a hydrophobic group-containing monomer and an ionic group-containing monomer. Each monomer may be used alone or in combination of two or more. The hydrophobic group-containing monomer and the ionic group-containing monomer are the same as the monomer of the copolymer component of the dye polymer (P) described above. As the polymer-type dispersant, DISPERBYK-194N (trade name) manufactured by Big Chemie Japan, EFKA7422 (trade name) manufactured by BASF, and the like can be used.
The content of the polymeric dispersant is preferably in the range of 0.001 to 50% by mass with respect to the total mass of the aqueous dispersion, and the surface tension of the aqueous dispersion is arbitrarily adjusted within this range. Is preferred.

A method for producing an aqueous dispersion of a dye polymer (P) is as follows: (A) a dye polymer powder or paste, and if necessary, a low molecular surfactant or a high molecular dispersant in water or an aqueous organic solvent. After mixing with glass beads, zirconia beads, titania beads, stainless steel balls, etc., or (B) water or aqueous organic solvent and water or aqueous organic solvent A soluble polymerizable dye monomer, if necessary, a copolymerization monomer, and an emulsifier (surfactant) are mixed, and a polymerization initiator (usually a radical generator) that can be dissolved in water or an aqueous organic solvent is added thereto. There is a method using emulsion polymerization, and these can be suitably used.
In addition, a glycol solvent as a wetting agent, for example, ethylene glycol, propylene glycol, diethylene glycol, glycerin, polyethylene glycol, etc., and urea, hyaluronic acid, sucrose, etc. may be added to these dispersions as necessary. it can. In addition, the above-mentioned nonionic surfactants and anionic surfactants can be added as dispersion aids, but these surfactants are used in a small amount so as not to lower the performance as dispersion stability. It is preferable to mix.

<Inkjet ink>
In the step (B) in the first aspect of the inkjet printing method of the present invention, an inkjet ink containing an aqueous dispersion of the dye polymer (P) is used.
In the step (C) in the second aspect of the inkjet textile printing method of the present invention, an inkjet ink containing an epoxy-based crosslinking agent and an aqueous dispersion of a dye polymer (P) is used.
The content of the epoxy-based crosslinking agent in the inkjet ink in the step (C) is preferably 0.05 to 10% by mass, and 1 to 8% by mass with respect to the total amount of the inkjet ink from the viewpoint of inkjet ejection properties. % Is more preferable, and 3 to 5% by mass is even more preferable.

  The present invention also relates to an inkjet ink containing an epoxy-based crosslinking agent and an aqueous dispersion of a dye polymer (P). The inkjet ink is preferably used for textile printing.

  The ink-jet ink used in the present invention preferably further contains water or an aqueous organic solvent. Moreover, you may contain components, such as another coloring agent, an organic solvent, surfactant, and various additives as needed.

The inkjet ink used in the present invention may further contain a colorant (dye, pigment, etc.) other than the dye polymer (P). When other colorants are included, the content of the dye polymer (P) is preferably 50% by mass or more, more preferably 80% by mass or more, based on the total mass of the colorant including the dye polymer (P). Furthermore, it is preferable to contain only 100% by mass, that is, only the dye polymer (P).
The content of the colorant (including the dye polymer (P) and other colorants) in the inkjet ink is such that a good dyeing concentration is obtained, and considering the storage stability of the inkjet ink, 0.1-20 mass% is preferable with respect to mass, 1-15 mass% is more preferable, and 3-12 mass% is further more preferable.

<Organic solvent>
Examples of the organic solvent that can be contained in the inkjet ink used in the present invention include polyhydric alcohols (for example, ethylene glycol, glycerin, 2-ethyl-2- (hydroxymethyl) -1,3-propanediol, tetraethylene). Glycol, triethylene glycol, tripropylene glycol, 1,2,4-butanetriol, diethylene glycol, propylene glycol, dipropylene glycol, butylene glycol, 1,6-hexanediol, 1,2-hexanediol, 1,5-pentane Diol, 1,2-pentanediol, 2,2-dimethyl-1,3-propanediol, 1,2-butanediol, 2-methyl-2,4-pentanediol, 3-methyl-1,5-pentanediol 3-methyl-1,3-butanedio And 2-methyl-1,3-propanediol etc.), amines (eg ethanolamine and 2- (dimethylamino) ethanol etc.), monohydric alcohols (eg methanol, ethanol and butanol etc.), Alkyl ethers of polyhydric alcohols (for example, diethylene glycol monomethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, triethylene glycol monobutyl ether, ethylene glycol monomethyl ether, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monobutyl ether, And dipropylene glycol monomethyl ether), 2,2′-thiodiethanol, amides (for example, N, N-di) Thioformamide, etc.), sulfolane, dimethylsulfoxide, sulfur-containing compounds such as 3-sulfolene, heterocycles (2-pyrrolidone, N-methyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone, and N- Ethyl morpholine) and acetonitrile. These may be used alone or in combination of two or more.
The organic solvent that can be contained in the inkjet ink used in the present invention is preferably the aforementioned aqueous organic solvent.
The content of the organic solvent in the inkjet ink is preferably 1% by mass to 60% by mass and more preferably 2% by mass to 50% by mass with respect to the total mass of the inkjet ink.

<Surfactant>
The inkjet ink used in the present invention can further use various surfactants from the viewpoint of enhancing storage stability, ejection stability, ejection accuracy, and the like. As the surfactant, any of cationic, anionic, amphoteric and nonionic surfactants can be used.

  Examples of the cationic surfactant include aliphatic amine salts, aliphatic quaternary ammonium salts, benzalkonium salts, benzethonium chloride, pyridinium salts, and imidazolinium salts.

  Examples of anionic surfactants include fatty acid soaps, N-acyl glutamates, alkyl sulfonates, alkyl benzene sulfonates, alkyl sulfoacetates, sulfated oils, higher alcohol sulfates, and alkyl phosphates. Etc.

  Examples of amphoteric surfactants include carboxybetaine type, sulfobetaine type, aminocarboxylate, and imidazolinium betaine. A suitable example is an amine oxide type such as N, N-dimethyl-N-alkylamine oxide.

Nonionic surfactants include, for example, polyoxyethylene alkyl ether, polyoxyethylene lanolin derivative, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene glycerin fatty acid ester, polyethylene glycol fatty acid ester, polyglycerin fatty acid ester, sorbitan fatty acid Examples include esters, propylene glycol fatty acid esters, and acetylene glycols. A suitable example is Surfynol (trade name, manufactured by Air Products) which is an acetylene-based polyoxyethylene oxide surfactant.
In addition, pages (37) to (38) of JP-A-59-157,636, Research Disclosure No. Those listed as surfactants in 308119 (1989) can also be used.

When each of these surfactants is used, one surfactant may be used alone, or two or more surfactants may be mixed and used.
The content of the surfactant in the inkjet ink used in the present invention is preferably in the range of 0.001% by mass to 5.0% by mass with respect to the total mass of the inkjet ink. It is preferable to arbitrarily adjust the surface tension.

<Various additives>
The ink-jet ink used in the present invention may contain various other conventionally known additives. Examples of additives include pH adjusters such as acid bases and buffer solutions, fluorescent brighteners, surface tension adjusters, antifoaming agents, drying inhibitors, lubricants, thickeners, ultraviolet absorbers, anti-fading agents, Examples thereof include an antistatic agent, a matting agent, an antioxidant, a specific resistance adjuster, an antirust agent, an inorganic pigment, a reduction inhibitor, an antiseptic, an antifungal agent, a chelating agent, and a crosslinking agent.

(UV absorber)
As ultraviolet absorbers, they are described in JP-A-58-185777, JP-A-61-190537, JP-A-2-782, JP-A-5-197075, JP-A-9-34057, and the like. Benzotriazole compounds, benzophenone compounds described in JP-A No. 46-2784, JP-A No. 5194443, US Pat. No. 3,214,463, etc., JP-B-48-30492, JP-B-56 -21141, JP-A-10-88106, etc., cinnamic acid compounds, JP-A-4-298503, JP-A-8-53427, JP-A-8-239368, JP-A-10- Triazine compounds described in Japanese Patent No. 182621, Japanese National Publication No. Hei 8-501291, etc., Research Disclosure No. Compounds described in No. 24239, compounds that emit fluorescence by absorbing ultraviolet rays typified by stilbene-based and benzoxazole-based compounds, so-called fluorescent brighteners, can also be used. When the inkjet ink contains an ultraviolet absorber, image storability can be improved.

(Anti-fading agent)
As an anti-fading agent, various organic and metal complex anti-fading agents can be used. Examples of organic fading inhibitors include hydroquinones, alkoxyphenols, dialkoxyphenols, phenols, anilines, amines, indanes, chromans, alkoxyanilines, and heterocycles. Examples of the metal complex include a nickel complex and a zinc complex. More specifically, Research Disclosure No. No. 17643, VII, I and J, No. 15162, ibid. No. 18716, page 650, left column, ibid. No. 36544, page 527, ibid. No. 307105, page 872, ibid. Included in the general formulas and compound examples of the compounds described in the patent cited in US Pat. No. 15162, and representative compounds described in JP-A-62-215272, pages 127 to 137, and US Pat. No. 5,356,443. Can be used. When the ink-jet ink contains an anti-fading agent, image storability can be improved.

(Preservative and antifungal agent)
The ink-jet ink used in the present invention may contain at least one of a preservative and an antifungal agent in order to maintain long-term storage stability of the ink. When the ink-jet ink contains a preservative or an antifungal agent, long-term storage stability can be enhanced. Examples of antiseptics and antifungal agents include aromatic halogen compounds (for example, Priventol CMK; trade name, manufactured by LANXESS), methylene dithiocyanate, halogen-containing nitrogen sulfur compounds, 1,2-benzisothiazolin-3-one (For example, Proxel GXL; manufactured by Arch Chemicals, trade name), sodium dehydroacetate, sodium benzoate, sodium pyridinethione-1-oxide, ethyl p-hydroxybenzoate, 1,2-benzisothiazolin-3-one, And salts thereof.
A preservative and an antifungal agent may be used individually by 1 type, and may use 2 or more types together. When the inkjet ink contains a preservative and an antifungal agent, the content of the antiseptic and the antifungal agent is preferably 0.02% by mass to 1.00% by mass with respect to the total mass of the inkjet ink.

(Anti-drying agent)
As the drying inhibitor, an aqueous organic solvent having a vapor pressure lower than that of water can be suitably used. By including an anti-drying agent in the inkjet ink, clogging due to drying of the ink can be prevented at the ejection port of the nozzle of the ejection head that ejects the ink when used for inkjet recording.
Specific examples of the drying inhibitor include, for example, ethylene glycol, propylene glycol, diethylene glycol, polyethylene glycol, thiodiglycol, dithiodiglycol, 2-methyl-1,3-propanediol, 1,2,6-hexanetriol. , Acetylene glycol derivatives, glycerin, polyhydric alcohols typified by trimethylolpropane, ethylene glycol monomethyl (or ethyl) ether, diethylene glycol monomethyl (or ethyl) ether, triethylene glycol monoethyl (or butyl) Lower alkyl ethers of polyhydric alcohols such as ethers, heterocycles such as 2-pyrrolidone, N-methyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone, and N-ethylmorpholine, Horan, dimethyl sulfoxide, and sulfur-containing compounds such as sulfolane, diacetone alcohol, and polyfunctional compounds such as diethanolamine, and urea derivatives. Of these, polyhydric alcohols such as glycerin and diethylene glycol are more preferred.
Moreover, a drying inhibitor may be used individually by 1 type, and may use 2 or more types together. When said inkjet ink contains a drying inhibitor, 10 mass%-50 mass% are preferable with respect to the total mass of an inkjet ink.

(PH adjuster)
As a pH adjuster, neutralizers, such as an organic base and an inorganic alkali, can be used, for example. When the inkjet ink is used for recording, the storage stability of the inkjet ink can be improved by containing a pH adjuster in the inkjet ink. The pH adjuster is preferably added so that the pH of the inkjet ink is 5 to 12, and more preferably added so that the pH is 5 to 9.

(Surface tension modifier and antifoaming agent)
Examples of the surface tension adjusting agent include various surfactants such as nonionic surfactants, cationic surfactants, and anionic surfactants. Preferred examples of the surfactant are the same as those exemplified in the above-mentioned surfactant column.
As the antifoaming agent, fluorine-based and silicone-based compounds are preferable.

The surface tension of the inkjet ink used in the present invention is preferably adjusted to 20 mN / m to 70 mN / m, and more preferably adjusted to 25 mN / m to 60 mN / m. The viscosity of the inkjet ink is preferably adjusted to 40 mPa · s or less, more preferably adjusted to 30 mPa · s or less, and particularly preferably adjusted to 20 mPa · s or less.
Surface tension and viscosity are various additives such as viscosity modifiers, surface tension modifiers, specific resistance modifiers, film modifiers, UV absorbers, antioxidants, antifading agents, antifungal agents, and rust inhibitors. It can be adjusted by adding a dispersant, a surfactant and the like.

(Chelating agent)
The chelating agent is preferably used for the purpose of preventing the generation of precipitates such as precipitates in the ink-jet ink, and for the purpose of improving storage stability and clogging recovery. When dyes are used as colorants for inkjet inks, the metal ions (Ca, Mg, Si, Fe, etc.) contained in the ink can cause precipitation and reduce clogging recovery. It is known that it is necessary to manage below the amount. In addition, when a copper complex dye is used, even if the amount of metal ions is controlled, if the amount of free copper ions is not controlled, the occurrence of precipitates and a reduction in clogging recovery may be observed. (See JP 2000-355665, JP 2005-126725, etc.).
Examples of the chelating agent include ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid, hydroxyethylethylenediaminetriacetic acid, uramildiacetic acid, and metal salts thereof (for example, sodium salt).

[Method for producing colored fabric]
The present invention also relates to a method for producing a colored fabric including the steps (A), (B), and (D) and a method for producing a colored fabric including the steps (C) and (D).

<Fabric>
Examples of fabrics to which the inkjet printing method and the colored fabric production method of the present invention can be applied include the following. Fabrics (fiber types) include synthetic fibers such as nylon, polyester and acrylonitrile, semi-synthetic fibers such as acetate and rayon, natural fibers such as cotton, silk and wool, and mixed fibers, woven fabrics, knitted fabrics, non-woven fabrics, etc. Is mentioned.
Apparel includes T-shirts, trainers, jerseys, pants, sweatsuits, dresses, blouses and the like. It is also suitable for bedding and handkerchiefs.

Examples of the fabric that can be applied to the present invention include fabrics of various fiber types, as described above, but are preferably fiber types having groups that can react with epoxy groups. By using a fabric of a fiber type having a group that reacts with an epoxy group, the fiber and the dye polymer (P) undergo a crosslinking reaction via the epoxy crosslinking agent, and the dye polymer (P) is more integrated with the fiber. Further, the fastness of the image applied to the fabric is further improved.
Examples of the group that reacts with the epoxy group include a carboxyl group, a hydroxyl group, and an amino group. Among these, a carboxyl group or an amino group is particularly preferable, and a carboxyl group is more preferable.

  The inkjet printing method of the present invention or the manufacturing method of the colored fabric can be applied regardless of the fiber type of the fabric, and the colored fabric manufactured by the inkjet printing method of the present invention or the manufacturing method of the colored fabric has a texture, The ink jet printing method, the method for producing a colored cloth, and the ink jet ink of the present invention are highly valuable because they exhibit excellent effects in any of the characteristics of washing fastness, friction fastness, and printing workability.

〔ink cartridge〕
The present invention also relates to an ink cartridge filled with the inkjet ink of the present invention, that is, an inkjet ink containing an epoxy-based crosslinking agent and an aqueous dispersion of a dye polymer (P).

[Colored fabric]
The present invention also relates to a colored fabric having an image including a cured product of an epoxy-based crosslinking agent and a dye polymer (P) having a repeating unit including a structure derived from a dye on at least a part of the surface of the fabric.

(Synthesis Example 1)
[Synthesis of Dye Polymer (Y-2-1)]
Exemplary compound (Y-2-1) was synthesized according to the following scheme. i-Pr represents an isopropyl group.

  10 mL of N-methylpyrrolidone (NMP) was added to a 100 mL three-necked flask, and the internal temperature was raised to 85 ° C. In the NMP, 9.0 g of a polymerizable monomer YM-1 (synthesized by the method described in Japanese Patent No. 5315267), 1.0 g of methacrylic acid (MAA, manufactured by Wako Pure Chemical Industries) as a polymerizable monomer, V-601 ( A solution obtained by dissolving 0.126 g of Wako Pure Chemical Industries, Ltd. (trade name) and 0.443 g of 1-dodecanethiol (product of Wako Pure Chemical Industries) in 13.24 g of NMP was added dropwise over 3 hours. After completion of dropping, the reaction solution A was obtained by reacting at 85 ° C. for 1 hour. Then, V-601 (0.098g) was added to the reaction liquid A, and also it was made to react at 85 degreeC for 2 hours, and the reaction liquid B was obtained. The reaction solution B is allowed to cool to 20 ° C., poured into 500 mL of water, crystals are precipitated, and the crystals are separated by filtration, and the filtered crystals are dried for 1 day in a 60 ° C. blower dryer, and exemplified compounds A yellow powder of (Y-2-1) was obtained. The yield of exemplary compound (Y-2-1) was 9.8 g. The absorption maximum wavelength of the ultraviolet-visible absorption spectrum in a dilute solution of Exemplified Compound (Y-2-1) in tetrahydrofuran (THF) was 441 nm. Moreover, the weight average molecular weight (Mw) in the gel permeation chromatography (GPC) measurement of exemplary compound (Y-2-1) was 10,500 (polystyrene conversion).

  Other dye polymers were also synthesized according to Synthesis Example 1.

Example 1
[Preparation of aqueous treatment solution of epoxy-based crosslinking agent]
Cellulazole MC O-442 (epoxy compound-encapsulated microcapsule aqueous dispersion, manufactured by Chukyo Yushi Co., Ltd., trade name) 1.0 g, glycerin 1.5 g, and ultrapure water 7.5 g, which is an epoxy-based crosslinking agent, are mixed together. The aqueous treatment liquid (A1) was prepared by filtering through a filter (average pore size 0.45 μm).

(Preparation of aqueous dispersion of dye polymer)
0.25 g of exemplary compound (Y-2-1) which is a dye polymer, 10 g of zirconia beads (made by Nikkato, trade name YTZ ball, diameter 0.1 μm), 0.05 g of sodium oleate, 0.5 g of glycerin, and ultrapure 4.2 g of water was added, and the mixture was dispersed for 10 hours at a rotation speed of 400 rpm (rotation per minute) using a planetary granulator (Pulverset 7 manufactured by Fritsch). From the obtained dispersion, zirconia beads were removed using a filter cloth to obtain a dye polymer aqueous dispersion (1).

[Preparation of inkjet ink for textile printing]
The following components were mixed at 20 ° C., stirred for 15 minutes, and then filtered through a membrane filter (average pore size 0.8 μm) to prepare a printing inkjet ink (B1).
Dye polymer aqueous dispersion (1) 3.0 g
Trimethylolpropane 0.056g
0.913g of ultrapure water
1,12-hexanediol 0.112g
Glycerin 0.560g
Triethylene glycol monobutyl ether 0.112 g
2-pyrrolidone 0.168g
Propylene glycol 0.028g
Surfynol 465 (trade name, manufactured by Nissin Chemical Industry) 0.056g

<Step (A): Application of aqueous treatment liquid to fabric, Step (B): inkjet printing>
The prepared aqueous treatment liquid (A1) and inkjet ink for printing (B1) were respectively loaded into separate ink tanks of an ink cartridge, and an ink jet printer (Calario PX-045A manufactured by Seiko Epson Corporation, trade name) was used. An image was printed on a polyester fabric (Polyester Tropical, manufactured by Color & Color Co., Ltd., product code A02-01019) so that the same amount of the aqueous treatment liquid (A1) and the inkjet ink for printing (B1) were ejected.

<Process (D): Heat treatment process>
The colored cloth obtained above was dried at 20 ° C. for 12 hours. After drying, heat treatment is performed using a heat press (manufactured by Asahi Textile Machinery Co., Ltd., trade name: desktop automatic flat press machine AF-54TEN type) at a temperature of 120 ° C., a pressure of 0.20 N / cm ² , and a time of 60 seconds. A colored cloth was obtained.

(Example 2)
A colored fabric was obtained in the same manner as in Example 1 except that the polyester fabric of Example 1 was changed to a cotton fabric (with cotton broad sill, manufactured by Color Dye, product code A02-01002).

(Example 3)
A colored fabric is obtained in the same manner as in Example 1 except that the polyester fabric of Example 1 is changed to a 65% polyester 35% cotton blend (mixed polyester 65/35 cotton broad, manufactured by Color Dye, product code A02-01030). It was.

Example 4
<Step (A): Application of aqueous treatment liquid to fabric>
The aqueous treatment liquid (A1) prepared in Example 1 was applied to a cotton fabric (with cotton broad sill, product code A02-01002) by a padding method (squeezing rate 70%). Then, it dried at 20 degreeC for 24 hours, and obtained the pre-processing cloth (1).
The squeezing rate (%) represents the remaining amount (mass ratio) of the aqueous treatment liquid relative to the fabric after the cloth containing the aqueous treatment liquid is squeezed.

<Process (B): Inkjet printing>
The inkjet ink (B1) for textile printing prepared in Example 1 is loaded into an ink cartridge, and an image is applied to the pretreatment cloth (1) using an inkjet printer (Calario PX-045A, trade name, manufactured by Seiko Epson Corporation). Was recorded.

<Process (D): Heat treatment process>
The colored cloth obtained above was dried at 20 ° C. for 12 hours. After drying, heat treatment is performed using a heat press (manufactured by Asahi Textile Machinery Co., Ltd., trade name: desktop automatic flat press machine AF-54TEN type) at a temperature of 120 ° C., a pressure of 0.20 N / cm ² , and a time of 60 seconds. A colored cloth was obtained.

(Example 5)
A colored cloth was obtained in the same manner as in Example 1, except that the type of the epoxy-based crosslinking agent in Example 1 was changed to Cerozol MC O-444 (manufactured by Chukyo Yushi Co., Ltd., trade name).

(Example 6)
A colored fabric was obtained in the same manner as in Example 1 except that the type of the epoxy-based crosslinking agent in Example 1 was changed to diethylene glycol diglycidyl ether.

(Example 7)
A colored fabric was obtained in the same manner as in Example 1 except that the type of the epoxy-based crosslinking agent in Example 1 was changed to glycerin polyglycidyl ether.

(Example 8)
A colored fabric was obtained in the same manner as in Example 1 except that the type of the epoxy-based crosslinking agent in Example 1 was changed to 1,4-butanediol diglycidyl ether.

Example 9
A colored fabric was obtained in the same manner as in Example 1 except that the type of the dye polymer in Example 1 was changed to the exemplary compound (Y-1-3).

(Example 10)
A colored fabric was obtained in the same manner as in Example 1 except that the type of the dye polymer in Example 1 was changed to (Y-2-2).

(Example 11)
A colored fabric was obtained in the same manner as in Example 1 except that the type of the dye polymer in Example 1 was changed to the exemplary compound (Y-2-3).

(Example 12)
A colored fabric was obtained in the same manner as in Example 1 except that the type of the dye polymer in Example 1 was changed to the exemplary compound (B-2-2).

(Example 13)
In the preparation of the aqueous processing solution of the epoxy crosslinking agent of Example 1, the amount of the epoxy crosslinking agent was changed to 0.5 g, and the amount of ultrapure water was changed to 8.0 g. Thus, a colored cloth was obtained.

(Example 14)
In the preparation of the aqueous processing solution for the epoxy crosslinking agent of Example 1, the amount of the epoxy crosslinking agent was changed to 2.0 g, and the amount of ultrapure water was changed to 6.5 g. Thus, a colored cloth was obtained.

(Example 15)
A colored fabric was obtained in the same manner except that the dispersion time of the dye polymer (Y-2-1) of Example 1 was changed from 10 hours to 30 minutes. A slight print image defect was observed in the obtained colored fabric.

(Example 16)
[Preparation of inkjet ink for textile printing]
The following components were mixed at 20 ° C., stirred for 15 minutes, and then filtered through a membrane filter (average pore size 0.8 μm) to prepare an inkjet ink for printing (B16).
Dye polymer aqueous dispersion (1) 3.0 g
Cerozol MC O442 (epoxy crosslinking agent, manufactured by Chukyo Yushi Co., Ltd., trade name)
0.2g
Trimethylolpropane 0.056g
0.713g of ultrapure water
1,12-hexanediol 0.112g
Glycerin 0.560g
Triethylene glycol monobutyl ether 0.112 g
2-pyrrolidone 0.168g
Propylene glycol 0.028g
Surfynol 465 (trade name, manufactured by Nissin Chemical Industry) 0.056g

<Process (C): The process of providing the inkjet ink by the inkjet method containing an epoxy-type crosslinking agent and the aqueous dispersion of the dye polymer (P) which has a repeating unit containing the structure derived from a dye>
The ink jet ink for printing (B16) prepared in Example 16 was loaded into an ink cartridge, and a polyester fabric (polyester tropical, color dyeing) was used using an ink jet printer (Calario PX-045A, trade name, manufactured by Seiko Epson Corporation). An image was recorded on a product code A02-01019) manufactured by the company.

<Process (D): Heat treatment process>
The colored cloth obtained above was dried at 20 ° C. for 12 hours. After drying, heat treatment is performed using a heat press (manufactured by Asahi Textile Machinery Co., Ltd., trade name: desktop automatic flat press machine AF-54TEN type) at a temperature of 120 ° C., a pressure of 0.20 N / cm ² , and a time of 60 seconds. A colored cloth was obtained.

(Comparative Example 1)
Pluscoat Z-760 (water-based polyester resin, manufactured by Kyoyo Chemical Co., Ltd., trade name, solid content 25%) 10 g, Permarin UA-368T (water-based polyurethane resin, manufactured by Sanyo Chemical Industries, trade name, solid content 50%) 16 g, SR- 4GL (epoxy crosslinking agent, Sakamoto Pharmaceutical Co., Ltd., trade name) 2 g, NBP-211 (block isocyanate crosslinking agent, Meisei Chemical Co., Ltd., trade name) 2 g, Cellpearl SM-100 (Guar Gum, Adachi Glue, trade name) , Solid content 12%) 20 g of water and 50 g of water were mixed with a pad method (10-second immersion, squeezing rate 70%) with respect to a polyester fabric (polyester tropical, manufactured by Color dyeing Co., Ltd., product code A02-01019). ) And dried at 120 ° C. for 30 minutes to prepare a comparative pretreatment cloth (1). Inkjet textile printing ink (sublimation dye cyan ink, SureColor F-6000, SureColor F-6000, product model number SC5C100J) is loaded into an ink cartridge, and an ink jet printer (Seiko Epson Co., Ltd. Karario PX-045A, trade name) is used. Thus, an image was recorded on the comparative pretreatment cloth (1). After drying at 20 ° C. for 12 hours, using a heat press (manufactured by Asahi Textile Machinery Co., Ltd., trade name: desktop automatic flat press machine AF-54TEN type), temperature 185 ° C., pressure 0.10 N / cm ² , time A colored fabric was obtained by performing heat treatment for 40 seconds.

(Comparative Example 2)
A colored fabric was obtained in the same manner as in Comparative Example 1 except that the polyester fabric of Comparative Example 1 was changed to a cotton fabric (with cotton broad sill, manufactured by Color Dye, product code A02-01002).

The colored fabrics of Examples and Comparative Examples were evaluated as follows.
The evaluation of the colored fabric is a series performed as follows. The higher the series, the better the color fastness.
Washing resistance: Japanese Industrial Standard (JIS) L0844: 2011, Dye fastness test method for washing (A-2 test)
-Sweat resistance: JIS L0848: 2004, Dye fastness test method for sweat (acidic and alkaline)
-Friction resistance: JIS L0849: 2013, Dye fastness test method for friction (Friction tester type II (Gakushin type) method)
-Dry cleaning resistance: JIS 0860: 2008, Dye fastness test method for dry cleaning (A-2 test)

As is apparent from the above results, it can be seen that the ink-jet printing method according to the examples of the present invention can be applied regardless of the fiber type of the fabric, and gives a colored fabric having excellent image fastness. In addition, the inkjet printing method according to the embodiment of the present invention does not require application of printing paste and washing with water, and waste water and waste materials are not generated, so that environmental load is excellent and workability is not problematic.
In addition, in the inkjet printing method using the disperse dye of the comparative example, the color other than the polyester was insufficiently colored, and a colored fabric having excellent image fastness as in the examples of the present invention could not be obtained. . This is because it is considered essential that the disperse dye penetrates into the fiber of the fabric for coloring. Therefore, in the fabric other than the polyester having low dispersibility of the disperse dye, the inkjet printing method using the disperse dye of the comparative example is used. It is presumed that this was because it was not applicable. On the other hand, in the ink jet printing method using the dye polymer of the present invention, the dye polymer is considered to be integrated with the fiber at the molecular level so as to cover the surface of the fiber regardless of the fiber type, and therefore, it is composed of various types of fibers. This is probably because the fabric can be dyed.
Moreover, in the inkjet printing method using the disperse dye of the comparative example, even when the polyester fabric was used, the sweat resistance and the friction resistance were inferior to those of the examples of the present invention.

Claims (17)

An inkjet printing method comprising the following steps (A), (B), and (D).
Step (A): A step of applying an aqueous treatment liquid containing an epoxy-based crosslinking agent to a fabric Step (B): An aqueous dispersion of a dye polymer (P) having a repeating unit containing a structure derived from a dye on a fabric. Step of applying inkjet ink including ink jet method Step (D): Heat treatment step An inkjet printing method comprising the following steps (C) and (D).
Step (C): A step of applying an inkjet ink containing an epoxy-based crosslinking agent and an aqueous dispersion of a dye polymer (P) having a repeating unit containing a structure derived from a dye to the fabric by an inkjet method. Step (D) : Heat treatment process   The inkjet printing method according to claim 1, wherein the application of the aqueous treatment liquid in the step (A) is performed by a coating method, a padding method, or an inkjet method.   The inkjet printing method according to any one of claims 1 to 3, wherein a temperature of the heat treatment in the step (D) is 50 ° C or higher and lower than 250 ° C.   The dye polymer (P) in the water dispersion is a particulate dye polymer, and an average particle diameter of the particulate dye polymer is 50 to 500 nm. 5. Inkjet printing method.   The ink-jet printing method according to any one of claims 1 to 5, wherein the dye polymer (P) has a weight average molecular weight of 3,000 to 200,000.   The inkjet printing method according to any one of claims 1 to 6, wherein the dye polymer (P) has a group that reacts with an epoxy group.   The inkjet printing method according to any one of claims 1 to 7, wherein the aqueous dispersion further contains a low molecular surfactant or a high molecular dispersant having a group that reacts with an epoxy group.   The inkjet printing method according to any one of claims 1 to 8, wherein the dye polymer (P) has a carboxyl group.   The inkjet printing method according to claim 1 or 3, wherein the content of the epoxy-based crosslinking agent in the step (A) is 0.05 to 10% by mass with respect to the total amount of the aqueous treatment liquid.   The inkjet printing method according to claim 2, wherein the content of the epoxy-based crosslinking agent in the step (C) is 0.05 to 10% by mass with respect to the total amount of the inkjet ink. The manufacturing method of the colored cloth containing following process (A), (B), and (D).
Step (A): A step of applying an aqueous treatment liquid containing an epoxy-based crosslinking agent to a fabric Step (B): An aqueous dispersion of a dye polymer (P) having a repeating unit containing a structure derived from a dye on a fabric. Step of applying inkjet ink including ink jet method Step (D): Heat treatment step The manufacturing method of the colored cloth containing following process (C) and (D).
Step (C): A step of applying an inkjet ink containing an epoxy-based crosslinking agent and an aqueous dispersion of a dye polymer (P) having a repeating unit containing a structure derived from a dye to the fabric by an inkjet method. Step (D) : Heat treatment process   An inkjet ink comprising an epoxy-based crosslinking agent and an aqueous dispersion of a dye polymer (P) having a repeating unit containing a structure derived from a dye.   The inkjet ink according to claim 14, which is used for textile printing.   An ink cartridge filled with the inkjet ink according to claim 14. A colored cloth having an image containing a cured product of an epoxy-based crosslinking agent and a dye polymer (P) having a repeating unit containing a structure derived from a dye on at least a part of the surface of the cloth.