JP2007161950A - Inkjet ink for use in textile, and method for recording in inkjet ink for use in textile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inkjet ink for use in textile printing and a method for recording in an inkjet ink for use in textile printing, and to provide such an inkjet ink for use in textiles and such a method for recording in an inkjet ink for use in textiles, as are excellent in the feathering even with no pretreatment and besides as make it possible to dye an unprecedented color matter by imparting a large amount of the ink. <P>SOLUTION: The inkjet ink for use in textiles comprises water, a polymer compound which has a hydrophilic main chain and a plurality of side chains and which may be crosslinked among the side chains by means of the irradiation with an active energy ray, and a disperse dye. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an inkjet ink for textiles used for textile printing and an inkjet ink recording method for textiles, and has good feathering without applying a pretreatment and can be applied with a large amount of ink. The present invention relates to an inkjet ink and an inkjet ink recording method for textiles.

  In recent years, in the field of textile printing, there has been a demand for an ink jet textile printing method that does not require a plate making process in order to shorten the delivery time and cope with small-lot and multi-product production.

  In inkjet printing, the ink has a lower viscosity than the color paste in normal printing, so that the fabric cannot hold sufficient ink, or the ink is absorbed along the fiber direction and feathering occurs. In order to solve these problems, it has been proposed to perform a pretreatment mainly comprising a water-soluble polymer (see Patent Documents 1 and 2).

  However, in the pretreatment using a water-soluble polymer, a step of applying a pretreatment agent is required, which requires extra time and increases costs. Furthermore, it is difficult to pre-process a small amount on demand, which hinders the spread of inkjet printing.

  In order to solve the above-mentioned problems, there has been proposed a transfer printing method in which, after printing on transfer paper, color is developed by transferring the dye to the fiber by superimposing it on the fabric and heating (see Patent Documents 3 and 4). . However, in the transfer textile printing method, transfer paper corresponding to the print amount is generated as waste. Further, the amount of dye that can be applied to the fabric is limited by the amount of ink absorbed by the transfer paper, and a satisfactory concentration cannot always be achieved.

Further, although a dyeing method using a UV curable monomer has been proposed (see Patent Document 5), there is a problem that the texture is deteriorated because the resin after UV curing remains on the fiber.
JP 05-148777 A Japanese Patent Laid-Open No. 05-179777 Japanese Patent Laid-Open No. 10-016382 Japanese Patent Laid-Open No. 10-250222 JP-T-2004-532750

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an inkjet ink for textile printing and an inkjet ink recording method for textile printing. Feathering can be performed without performing pretreatment. An object of the present invention is to provide an ink jet ink for fibers and an ink jet recording method for fibers that enable dyeing of unprecedented dark colors by applying a good amount of ink.

  The above object of the present invention can be achieved by the following constitution.

  1. A fiber comprising at least water, a polymer compound having a plurality of side chains in a hydrophilic main chain, and capable of crosslinking between side chains by irradiation with active energy rays, and a disperse dye Inkjet ink.

  2. 2. The inkjet ink for fibers according to 1, wherein the polymer compound is contained in an amount of 0.8 to 5.0% by mass based on the total mass of the ink.

  3. The fiber according to 1 or 2, wherein the polymer compound is a saponified product having a hydrophilic main chain of polyvinyl acetate, a saponification degree of 77 to 99%, and a polymerization degree of 200 to 4000. Inkjet ink.

  4). 4. The inkjet ink for fibers according to any one of 1 to 3, wherein the modification rate of the side chain with respect to the hydrophilic main chain is 0.8 mol% or more and 4 mol% or less.

  5. A method for ink-jet recording for fibers, which comprises performing color development after printing on a fabric using the ink-jet ink for fibers according to any one of 5.1 to 4.

  According to the present invention, an inkjet ink for textile printing and an inkjet ink recording method for textile printing can be provided. Feathering is good without performing pretreatment, and a larger amount of ink is applied. It is possible to provide an ink-jet ink for fibers and an ink-jet ink recording method for fibers that enable dyeing of an unprecedented dark color.

  Hereinafter, although the best mode for carrying out the present invention will be described, the present invention is not limited to these.

<Active energy ray crosslinkable polymer compound>
The polymer compound having a plurality of side chains in the hydrophilic main chain according to the present invention and capable of crosslinking between the side chains by irradiating with active energy rays is a saponified product of polyvinyl acetate, polyvinyl acetal, polyethylene Oxide, polyalkylene oxide, polyvinylpyrrolidone, polyacrylamide, polyacrylic acid, hydroxyethyl cellulose, methyl cellulose, hydroxypropyl cellulose, or a derivative of the hydrophilic resin, and at least one hydrophilic selected from the group consisting of these copolymers In the resin, a modified group such as a photodimerization type, a photodecomposition type, a photopolymerization type, a photomodification type, or a photodepolymerization type is introduced into the side chain. Photopolymerizable crosslinkable groups are desirable from the viewpoints of sensitivity and performance of the generated image.

  In the hydrophilic main chain, a saponified product of polyvinyl acetate is preferable from the viewpoint of ease of introduction of side chains and handling, and the polymerization degree is preferably 200 or more and 4000 or less, and 200 or more and 2000 or less is more preferable from the viewpoint of handling. preferable. The modification rate of the side chain with respect to the main chain is preferably 0.3 mol% or more and 4 mol% or less, and more preferably 0.8 mol% or more and 4 mol% or less from the viewpoint of reactivity. If it is less than 0.3 mol%, the crosslinkability is insufficient and the effect of the present invention is reduced. If it is more than 4 mol%, the crosslink density is increased and the film is hard and brittle, and the strength of the film is lowered.

  As the photodimerization-type modifying group, those in which a diazo group, a cinnamoyl group, a stilbazonium group, a stilquinolium group or the like is introduced are preferable. For example, a photosensitive resin described in JP-A-60-129742 (Composition).

  The photosensitive resin described in JP-A-60-129742 is a compound represented by the following general formula (1) in which a stilbazonium group is introduced into a polyvinyl alcohol structure.

In the formula, R ₁ represents an alkyl group having 1 to 4 carbon atoms, and A ⁻ represents a counter anion.

  The photosensitive resin described in JP-A-56-67309 includes a 2-azido-5-nitrophenylcarbonyloxyethylene structure represented by the following general formula (2) in the polyvinyl alcohol structure, or the following general formula. This is a resin composition represented by (3) and having a 4-azido-3-nitrophenylcarbonyloxyethylene structure.

  Further, a modifying group represented by the following general formula (4) is also preferably used.

  In the formula, R represents an alkylene group or an aromatic ring. A benzene ring is preferred.

  As the photopolymerization type modifying group, for example, a resin represented by the following general formula (5) shown in JP-A Nos. 2000-181062 and 2004-189841 is preferable from the viewpoint of reactivity.

In the formula, R ₂ represents a methyl group or a hydrogen atom, n represents 1 or 2, X represents — (CH ₂ ) _m —COO— or —O—, and Y represents an aromatic ring or a single bond. And m represents an integer from 0 to 6.

  Moreover, it is also preferable to use the photopolymerization type | mold modified group represented by following General formula (6) described in Unexamined-Japanese-Patent No. 2004-161942 for a conventionally well-known water-soluble resin.

In the formula, R ₃ represents a methyl group or a hydrogen atom, and R ₄ represents a linear or branched alkylene group having 2 to 10 carbon atoms.

  Such an active energy ray-crosslinking resin is preferably contained in an amount of 0.8% by mass to 5.0% by mass with respect to the total mass of the ink. The presence of 0.8% by mass or more improves cross-linking efficiency, and beading and color bleeding are more preferable due to a rapid increase in ink viscosity after cross-linking. In the case of 5.0% by mass or less, it is difficult to adversely affect the physical properties of the ink and the state in the ink head, which is preferable from the viewpoints of light emission properties and ink storage stability.

  In the active energy ray cross-linking resin of the present invention, the main chain having a certain degree of polymerization is cross-linked through a cross-linking bond between side chains, and thus polymerizes through a general chain reaction. The effect of increasing the molecular weight per photon is significantly larger than that of an active energy ray curable resin. On the other hand, in the conventionally known active energy ray curable resins, the number of crosslinking points cannot be controlled, so the physical properties of the cured film cannot be controlled, and the film tends to be hard and brittle.

  In the resin used in the present invention, the number of crosslinking points can be completely controlled by the length of the hydrophilic main chain and the amount of side chains introduced, and the physical properties of the ink film can be controlled according to the purpose.

  Furthermore, almost all of the conventionally known active energy ray-curable inks other than the colorant are curable, so that the dots after curing are raised and inferior in image quality typified by gloss, are used in the present invention. The resin requires only a small amount, and since there are many dry components, the image quality after drying is improved and the fixing property is also good.

(Photopolymerization initiator, sensitizer)
In the present invention, it is also preferable to add a photopolymerization initiator or a sensitizer. These compounds may be dissolved or dispersed in a solvent, or may be chemically bonded to the photosensitive resin.

  There is no restriction | limiting in particular about the photoinitiator and photosensitizer which are applied, A conventionally well-known thing can be used.

  Although there is no restriction | limiting in particular about the photoinitiator and photosensitizer which are applied, A water-soluble thing is preferable from a viewpoint of mixability and reaction efficiency. In particular, 4- (2-hydroxyethoxy) phenyl- (2-hydroxy-2-propyl) ketone (HMPK), thioxanthone ammonium salt (QTX), and benzophenone ammonium salt (ABQ) are preferable from the viewpoint of miscibility with an aqueous solvent.

  Furthermore, 4- (2-hydroxyethoxy) phenyl- (2-hydroxy-2-propyl) ketone (n = 1, HMPK) represented by the following general formula (7) from the viewpoint of compatibility with the resin, The ethylene oxide adduct (n = 2 to 5) is more preferable.

  In the formula, n represents an integer of 1 to 5.

  Other examples include benzophenones such as benzophenone, hydroxybenzophenone, bis-N, N-dimethylaminobenzophenone, bis-N, N-diethylaminobenzophenone, 4-methoxy-4'-dimethylaminobenzophenone. Thioxanthones such as thioxatone, 2,4-diethylthioxanthone, isopropylthioxanthone, chlorothioxanthone, and isopropoxychlorothioxanthone. Anthraquinones such as ethyl anthraquinone, benzanthraquinone, aminoanthraquinone and chloroanthraquinone. Acetophenones. Benzoin ethers such as benzoin methyl ether. 2,4,6-trihalomethyltriazines, 1-hydroxycyclohexyl phenyl ketone, 2- (o-chlorophenyl) -4,5-diphenylimidazole dimer, 2- (o-chlorophenyl) -4,5-di ( m-methoxyphenyl) imidazole dimer, 2- (o-fluorophenyl) -4,5-phenylimidazole dimer, 2- (o-methoxyphenyl) -4,5-phenylimidazole dimer, 2- (P-methoxyphenyl) -4,5-diphenylimidazole dimer, 2, -di (p-methoxyphenyl) -5-phenylimidazole dimer, 2- (2,4-dimethoxyphenyl) -4,5 -2,4,5-triarylimidazole dimer of diphenylimidazole dimer, benzyldimethyl ketal, 2-benzyl-2-dimethyl Amino-1- (4-morpholinophenyl) butan-1-one, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholino-1-propanone, 2-hydroxy-2-methyl-1-phenyl -Propan-1-one, 1- [4- (2-hydroxyethoxy) -phenyl] -2-hydroxy-2-methyl-1-propan-1-one, phenanthrenequinone, 9,10-phenanthrenequinone, Benzoins such as methylbenzoin and ethylbenzoin, 9-phenylacridine, acridine derivatives such as 1,7-bis (9,9′-acridinyl) heptane, bisacylphosphine oxide, and mixtures thereof are preferably used. May be used alone or in combination.

  In addition to these photopolymerization initiators, accelerators and the like can also be added. Examples of these include ethyl p-dimethylaminobenzoate, isoamyl p-dimethylaminobenzoate, ethanolamine, diethanolamine, triethanolamine and the like.

  Even if these photoinitiators are grafted to the side chain with respect to the hydrophilic main chain.

(Active energy rays, irradiation method)
The active energy ray as used in the present invention includes, for example, electron beam, ultraviolet ray, α ray, β ray, γ ray, X ray and the like. However, it is dangerous to human body, easy to handle, and industrially used. Electron beams and ultraviolet rays are widely used.

  When using an electron beam, the amount of the electron beam to be irradiated is preferably in the range of 0.1 to 30 Mrad. If it is less than 0.1 Mrad, a sufficient irradiation effect cannot be obtained, and if it exceeds 30 Mrad, the support or the like may be deteriorated.

  When using ultraviolet rays, the light source is a low pressure, medium pressure, high pressure mercury lamp, metal halide lamp, xenon lamp having a light emission wavelength in the ultraviolet region, cold cathode tube, hot cathode tube, for example, having an operating pressure of 0.1 kPa to 1 MPa. A conventionally well-known thing, such as LED, is used.

(Light irradiation conditions after ink landing)
As the irradiation condition of actinic rays, actinic rays are preferably irradiated between 0.001 and 1.0 seconds after ink landing, and more preferably 0.001 to 0.5 seconds. In order to form a high-definition image, it is particularly important that the irradiation timing is as early as possible.

(Installation of lamp)
As a method for irradiating actinic rays, the basic method is disclosed in JP-A-60-132767. According to this, the light source is provided on both sides of the head unit, and the head and the light source are scanned by the shuttle method. Irradiation is performed after a certain period of time after ink landing. Further, the curing is completed by another light source that is not driven. In US Pat. No. 6,145,979, as an irradiation method, a method using an optical fiber or a method of applying a collimated light source to a mirror surface provided on the side of the head unit and irradiating the recording unit with UV light is disclosed. Yes. Any of these irradiation methods can be used in the image forming method of the present invention.

  In another preferred embodiment, irradiation with actinic rays is divided into two stages, and actinic rays are first irradiated by the above-described method between 0.001 and 2.0 seconds after ink landing, and further irradiated with actinic rays. It is. By dividing the irradiation of actinic rays into two stages, it is possible to further suppress the shrinkage of the recording material that occurs during ink curing.

[Disperse dye]
Hereinafter, specific examples of the disperse dye applicable to the ink jet ink of the present invention will be listed, but the present invention is not limited to these exemplified dyes.

  As the disperse dye, various disperse dyes such as an azo disperse dye, a quinone disperse dye, an anthraquinone disperse dye, and a quinophthalone disperse dye can be used, and a sublimation disperse dye can also be used. The specific compounds are listed below.

  Disperse dyes, unlike pigments, are soluble in organic solvents such as acetone and dimethylformamide. Moreover, it is possible to diffuse and color in a synthetic fiber in a molecular form.

<C. I. Disperse Yellow>
3, 4, 5, 7, 9, 13, 23, 24, 30, 33, 34, 42, 44, 49, 50, 51, 54, 56, 58, 60, 63, 64, 66, 68, 71, 74, 76, 79, 82, 83, 85, 86, 88, 90, 91, 93, 98, 99, 100, 104, 108, 114, 116, 118, 119, 122, 124, 126, 135, 140, 141, 149, 160, 162, 163, 164, 165, 179, 180, 182, 183, 184, 186, 192, 198, 199, 202, 204, 210, 211, 215, 216, 218, 224, 227, 231, 232,
<C. I. Disperse Orange>
1, 3, 5, 7, 11, 13, 17, 20, 21, 25, 29, 30, 31, 32, 33, 37, 38, 42, 43, 44, 45, 46, 47, 48, 49, 50, 53, 54, 55
56, 57, 58, 59, 61, 66, 71, 73, 76, 78, 80, 89, 90, 91, 93, 96, 97, 119, 127, 130, 139, 142,
<C. I. Disperse Red>
1, 4, 5, 7, 11, 12, 13, 15, 17, 27, 43, 44, 50, 52, 53, 54, 55, 56, 58, 59, 60, 65, 72, 73, 74, 75, 76, 78, 81, 82, 86, 88, 90, 91, 92, 93, 96, 103, 105, 106, 107, 108, 110, 111, 113, 117, 118, 121, 122, 126, 127, 128, 131, 132, 134, 135, 137, 143, 145, 146, 151, 152, 153, 154, 157, 159, 164, 167, 169, 177, 179, 181, 183, 184, 185, 188, 189, 190, 191, 192, 200, 201, 202, 203, 205, 206, 207, 210, 221, 224, 225, 227, 229, 23 , 240,257,258,277,278,279,281,288,298,302,303,310,311,312,320,324,328,
<C. I. Disperse Violet>
1, 4, 8, 23, 26, 27, 28, 31, 33, 35, 36, 38, 40, 43, 46, 48, 50, 51, 52, 56, 57, 59, 61, 63, 69, 77,
<C. I. Disperse Green>
9,
<C. I. Disperse Brown>
1, 2, 4, 9, 13, 19,
<C. I. Disperse Blue>
3, 7, 9, 14, 16, 19, 20, 26, 27, 35, 43, 44, 54, 55, 56, 58, 60, 62, 64, 71, 72, 73, 75, 79, 81, 82, 83, 87, 91, 93, 94, 95, 96, 102, 106, 108, 112, 113, 115, 118, 120, 122, 125, 128, 130, 139, 141, 142, 143, 146, 148, 149, 153, 154, 158, 165, 167, 171, 173, 174, 176, 181, 183, 185, 186, 187, 189, 197, 198, 200, 201, 205, 207, 211, 214, 224, 225, 257, 259, 267, 268, 270, 284, 285, 287, 288, 291, 293, 295, 297, 301, 315, 3 0,333,
<C. I. Disperse Black>
1, 3, 10, 24
Etc.

  As content of a disperse dye, 0.1-20 mass% is preferable, and 0.2-13 mass% is more preferable.

  The disperse dye may be used as a commercial product, but it is preferable to carry out a purification treatment. As a purification method, a known recrystallization method, washing or the like can be used. The organic solvent used in the purification method and purification treatment is preferably selected as appropriate according to the type of dye.

  As a method for dispersing the dye, various dispersing machines such as a ball mill, a sand mill, an attritor, a roll mill, an agitator, a Henschel mixer, a colloid mill, an ultrasonic homogenizer, a pearl mill, a wet jet mill, and a paint shaker can be used. Moreover, it is also preferable to use a centrifugal separator and a filter for the purpose of removing coarse particles of the dye dispersion.

  In the present invention, the polymer dispersant is not particularly limited, and a water-soluble resin or a water-insoluble resin is used. Examples of these polymers include styrene, styrene derivatives, vinyl naphthalene derivatives, acrylic acid, acrylic acid derivatives, methacrylic acid, methacrylic acid derivatives, maleic acid, maleic acid derivatives, itaconic acid, itaconic acid derivatives, fumaric acid, fumaric acid. Examples thereof include a polymer composed of a single monomer selected from acid derivatives, a copolymer composed of two or more monomers, and salts thereof. Water-soluble polymers such as polyvinyl alcohol, polyvinyl pyrrolidone, cellulose derivatives, gelatin, and polyethylene glycol can also be used.

  The content of these water-soluble resins with respect to the total amount of ink is preferably 0.1 to 10% by mass, and more preferably 0.3 to 5% by mass. These water-soluble resins can be used in combination of two or more.

  The average particle size of the dye dispersion used in the inkjet ink of the present invention is preferably 500 nm or less, more preferably 200 nm or less, preferably 10 nm or more and 200 nm or less, and more preferably 10 nm or more and 150 nm or less. When the average particle size of the dye dispersion exceeds 500 nm, the dispersion becomes unstable. Further, even when the average particle diameter of the dye dispersion is less than 10 nm, the stability of the dye dispersion is likely to deteriorate, and the storage stability of the ink tends to deteriorate.

  The particle size of the dye dispersion can be determined by a commercially available particle size measuring instrument using a light scattering method, an electrophoresis method, a laser Doppler method, or the like. It is also possible to obtain a particle image with a transmission electron microscope on at least 100 particles and perform statistical processing on the image using image analysis software such as Image-Pro (manufactured by Media Cybernetics). Is possible.

<Water-soluble solvent>
In the present invention, an aqueous liquid medium is preferably used as the solvent, and a mixed solvent such as water and a water-soluble organic solvent is more preferably used as the aqueous liquid medium. Examples of water-soluble organic solvents that are preferably used include alcohols (eg, methanol, ethanol, propanol, isopropanol, butanol, isobutanol, secondary butanol, tertiary butanol), polyhydric alcohols (eg, ethylene glycol, diethylene glycol, Triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, butylene glycol, hexanediol, pentanediol, glycerin, hexanetriol, thiodiglycol), polyhydric alcohol ethers (eg, ethylene glycol monomethyl ether, ethylene Glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol Nomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monobutyl ether, ethylene glycol monomethyl ether acetate, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, triethylene glycol monobutyl ether, ethylene glycol Monophenyl ether, propylene glycol monophenyl ether), amines (for example, ethanolamine, diethanolamine, triethanolamine, N-methyldiethanolamine, N-ethyldiethanolamine, morpholine, N-ethylmorpholine, ethylenediamine, diethylenediamine, triethylenetetra) , Tetraethylenepentamine, polyethyleneimine, pentamethyldiethylenetriamine, tetramethylpropylenediamine), amides (eg, formamide, N, N-dimethylformamide, N, N-dimethylacetamide, etc.), heterocycles (eg, 2 -Pyrrolidone, N-methyl-2-pyrrolidone, cyclohexyl pyrrolidone, 2-oxazolidone, 1,3-dimethyl-2-imidazolidinone), sulfoxides (for example, dimethyl sulfoxide) and the like.

<Surfactant>
Surfactants preferably used in the ink of the present invention include alkyl sulfates, alkyl ester sulfates, dialkyl sulfosuccinates, alkyl naphthalene sulfonates, alkyl phosphates, polyoxyalkylene alkyl ether phosphates, fatty acids. Anionic surfactants such as salts, nonionic surfactants such as polyoxyethylene alkyl ethers, polyoxyalkylene alkyl phenyl ethers, acetylene glycols, polyoxyethylene-polyoxypropylene block copolymers, glycerin esters, sorbitan Activators such as esters, polyoxyethylene fatty acid amides and amine oxides, and cationic surfactants such as alkylamine salts and quaternary ammonium salts.

  These surfactants can also be used as pigment dispersants, and in particular, anionic and nonionic surfactants can be preferably used.

  It is preferable that a dyeing assistant is included in the inkjet ink for printing used for dyeing by the hot steam method or the fabric used for printing. The dyeing aid has the effect of making eutectic mixture with the water condensed in the form of cloth when steaming the printed fabric, reducing the amount of water that re-evaporates, and shortening the heating time. Further, this eutectic mixture has the effect of dissolving the dye on the fiber and promoting the diffusion rate of the dye into the fiber. Urea is mentioned as a dyeing assistant.

<Various additives>
In the present invention, other conventionally known additives can be contained. For example, optical brighteners, antifoaming agents, lubricants, preservatives, thickeners, antistatic agents, matting agents, water-soluble polyvalent metal salts, acid bases, pH adjusters such as buffer solutions, antioxidants, surface tension It is a regulator, a non-resistance modifier, a rust inhibitor, an inorganic pigment, and the like.

<fiber>
In the present invention, the fiber material constituting the fabric used in the textile printing method is not particularly limited as long as it contains fibers that can be dyed with disperse dyes. Among them, fibers such as polyester, acetate, and triacetate are used. The thing containing is preferable. Among these, it is particularly preferable that at least a polyester fiber is contained.

<Fabric>
As the fabric, the above-described fibers may be any form such as a woven fabric, a knitted fabric, and a non-woven fabric. Further, as the fabric that can be used in the present invention, it is preferable that the fiber that can be dyed with disperse dyes is 100%, but a mixed woven fabric with rayon, cotton, polyurethane, acrylic, nylon, wool, silk, etc. Alternatively, a blended nonwoven fabric or the like can also be used as a textile for printing. Further, the thickness of the yarn constituting the fabric as described above is preferably in the range of 10 to 100d.

<Coloring treatment>
The color development step is a step of developing the original hue of ink by adhering to and fixing the dye in the ink that has only adhered to the fabric surface after printing and is not sufficiently adsorbed and fixed to the fabric. As the method, steaming by steam, baking by dry heat, thermosol, HT steamer by superheated steam, HP steamer by pressurized steam, etc. are used. They are appropriately selected depending on the material to be printed, ink, and the like. Further, the printed fabric may be immediately heat-treated or may be heat-treated after a while and may be dried and colored according to the intended use, and any method may be used in the present invention.
When dyeing with a disperse dye, a carrier may be used in addition to a method of coloring at a high temperature. The compound used as the carrier is preferably a compound having characteristics such as large dyeing acceleration, simple use, stable, low burden on human body and environment, easy removal from the fiber, and no influence on dye fastness. Examples of carriers include o-phenylphenol, p-phenylphenol, methylnaphthalene, alkyl benzoate, alkyl salicylate, phenols such as chlorobenzene and diphenyl, ethers, organic acids, hydrocarbons and the like. These promote the swelling and plasticization of difficult-to-dye fibers that are difficult to dye at temperatures around 100 ° C. like polyester, and make it easier for disperse dyes to enter the fibers. The carrier may be preliminarily adsorbed on the fibers of the fabric used for inkjet printing, or may be included in the inkjet ink.

<Washing>
After the heat treatment, washing may be performed for the purpose of removing the dye that was not involved in the dyeing. The method is selected according to the material and ink to be printed. For example, in the case of polyester, treatment is generally performed with a mixed solution of caustic soda, a surfactant, and hydrosulfite. The method is usually carried out in a continuous type such as an open soaper or in a batch type using a liquid dyeing machine, and any method may be used in the present invention.
You may dry after washing | cleaning. After the washed fabric is squeezed or dehydrated, it is dried or dried using a dryer, heat roll, iron or the like.

  EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated in detail, this invention is not limited to these. In the examples, “%” represents mass% unless otherwise specified.

Example 1
<Synthesis of polymer compound (preparation of polymer compound aqueous solution)>
56 g of glycidyl methacrylate, 48 g of p-hydroxybenzaldehyde, 2 g of pyridine, and 1 g of N-nitroso-phenylhydroxyamine ammonium salt were put in a reaction vessel and stirred in a hot water bath at 80 ° C. for 8 hours.

  Next, 45 g of saponified polyvinyl acetate having a polymerization degree of 300 and a saponification rate of 88% was dispersed in 225 g of ion-exchanged water, and then 4.5 g of phosphoric acid and p- (3-methacryloxy-) obtained by the above reaction were added to this solution. 2-Hydroxypropyloxy) benzaldehyde was added to PVA so that the modification rate was 3 mol%, and the mixture was stirred at 90 ° C. for 6 hours. After cooling the obtained solution to room temperature, 30 g of basic ion exchange resin was added and stirred for 1 hour. Thereafter, the ion exchange resin was filtered, and Irgacure 2959 (manufactured by Ciba Specialty Chemicals Co., Ltd.) as a photopolymerization initiator was mixed at a rate of 0.1 g with respect to 100 g of 15% aqueous solution, and then diluted with ion exchange water. A 10% aqueous polymer compound solution was obtained.

(Preparation of disperse dye dispersion)
(Preparation of yellow dispersion)
The following additives were mixed and dispersed using a sand grinder filled with 0.5% zirconia beads at a volume ratio of 50% to prepare a dispersion having a yellow dye content of 10%. The average particle size of the dye particles contained in this dispersion was 120 nm. The particle size was measured using a Zetasizer 1000HS manufactured by Malvern.

C. I. Disperse Yellow 149 10 parts Jonkrill 61 (acrylic styrene resin dispersant, manufactured by Johnson) 10 parts Glycerin 15 parts Ion-exchanged water remainder (Preparation of cyan dispersion)
The following additives were mixed and dispersed using a sand grinder filled with 50% by volume of 0.5 mm zirconia beads to prepare a dispersion having a cyan dye content of 20%. The average particle diameter of the dye particles contained in this dispersion was 100 nm. The particle size was measured using a Zetasizer 1000HS manufactured by Malvern.

C. I. Disperse Blue 60 20 parts Jonkrill 61 (acrylic styrene resin dispersant, manufactured by Johnson) 10 parts Glycerin 15 parts Ion-exchanged water remainder [Preparation of ink]
Yellow ink and cyan ink were prepared as follows.

(Yellow ink 1)
Yellow dispersion 30 parts 10% aqueous polymer compound solution 30 parts Glycerol 7 parts Diethylene glycol 15 parts Diethylene glycol monobutyl ether 2 parts Orphine e1010 (manufactured by Nissin Chemical Co., Ltd.) 0.2 parts A yellow ink 1 was obtained.

(Cyan ink 1)
Cyan ink 1 was obtained in the same manner using a cyan dispersion instead of the yellow dispersion.

(Yellow ink 2)
Yellow dispersion 30 parts Glycerin 12 parts Diethylene glycol 15 parts Diethylene glycol monobutyl ether 2 parts Orphine e1010 (manufactured by Nissin Chemical Co., Ltd.) 0.2 parts Ion-exchanged water was added to make 100 parts in total, and yellow ink 2 was obtained.

(Cyan ink 2)
A cyan ink 2 was obtained in the same manner using a cyan dispersion instead of the yellow dispersion.

[Used fabric]
As the pre-treated fabric, Suminoe Fabric GB3951 (Decine) fabric made of polyester fiber and manufactured by Sumie Textile Co., Ltd. was used.

  As the cloth without pretreatment, a cloth made of polyester fiber, manufactured by Sumie Textile Co., Ltd., Sumi Noe Fabric GB3951 (Decine), was washed with hot water at 80 ° C. to remove the pretreatment agent.

<Evaluation of feathering>
A piezo head having a nozzle diameter of 25 μm, a driving frequency of 12 kHz, a nozzle number of 128, a nozzle density of 180 dpi (hereinafter, dpi represents the number of dots per inch (2.54 cm)) and a maximum recording density of 720 × 720 dpi is used. Using an on-demand type ink jet printer, a thin line with a width of 250 μm and a length of 5 cm is printed on the above-mentioned non-pretreated cloth by continuously discharging each ink, and after landing, a 120 W / cm metal halide lamp. (Japan Battery MAL 400NL power supply power 3 kW · hr) was irradiated.

(Coloring treatment, washing treatment)
Subsequently, a heat coloring process was performed at 195 ° C. for 1 minute using a heat roller. The obtained print sample was visually observed, and feathering after coloring was evaluated according to the following evaluation criteria.

  Then, it wash | cleaned with the commercially available domestic washing machine using the washing | cleaning liquid which melt | dissolved Tokai Oil High Cleaner CA-10Y in the ratio of 2 g / l in the tap water. The obtained print samples were visually observed, and coloring and feathering after washing were evaluated according to the following evaluation criteria.

(Evaluation criteria)
○: Line width after color development is less than 300 μm ×: Line width after color development is 300 μm or more The results are shown in Table 1.

  As can be seen from Table 1, the ink of the present invention does not cause feathering regardless of whether or not it is washed.

<Evaluation of color bleed>
A piezo-type head having a nozzle diameter of 25 μm, a driving frequency of 12 kHz, a nozzle number of 128, a nozzle density of 180 dpi, a known droplet amount, and an on-demand type ink jet printer having a maximum recording density of 720 × 720 dpi was used. In the fabric described in 1), a fine line having a width of 100 μm is printed on a yellow solid ground by continuously discharging each ink, and after landing for 0.1 second, a 120 W / cm metal halide lamp (MAL 400NL (Power 3 kW · hr) was irradiated.

  At this time, the recording density and the number of head scans were changed, and the amount of ink with which color bleeding started to occur was determined.

(Coloring treatment, washing treatment)
Subsequently, a heat coloring process was performed at 195 ° C. for 1 minute using a heat roller. The obtained print sample was visually observed to evaluate color bleed after color development. Moreover, the density | concentration at that time was evaluated by the following evaluation criteria.

  Then, it wash | cleaned with the commercially available domestic washing machine using the washing | cleaning liquid which melt | dissolved Tokai Oil High Cleaner CA-10Y in the ratio of 2 g / l in the tap water. The obtained print sample was visually observed to evaluate color bleeding and color bleeding after washing. Moreover, the density | concentration at that time was evaluated by the following evaluation criteria.

(Evaluation criteria)
◎: Dark ○: Slightly dark Δ: Slightly light ×: Light The results are shown in Table 2.

However, in the table,
Ink set 1 is a combination of yellow ink 1 (invention) and cyan ink 1 (invention). Ink set 2 is a combination of yellow ink 2 (comparison) and cyan ink 2 (comparison). It can be seen that the ink of the present invention has a large amount of ink with which color bleeding starts to occur, and the density after color development is high regardless of whether or not the cleaning treatment is performed.

Claims (5)

A fiber comprising at least water, a polymer compound having a plurality of side chains in a hydrophilic main chain, and capable of crosslinking between side chains by irradiation with active energy rays, and a disperse dye Inkjet ink. The inkjet ink for fibers according to claim 1, wherein the polymer compound is contained in an amount of 0.8 to 5.0% by mass based on the total mass of the ink. 3. The polymer compound according to claim 1 or 2, wherein the polymer compound is a saponified product having a hydrophilic main chain of polyvinyl acetate, a saponification degree of 77 to 99%, and a polymerization degree of 200 to 4000. Inkjet ink for textiles. The inkjet ink for fibers according to any one of claims 1 to 3, wherein a modification rate of the side chain with respect to the hydrophilic main chain is 0.8 mol% or more and 4 mol% or less. A method for ink-jet recording for textiles, comprising performing color development after printing on a fabric using the ink-jet ink for textiles according to any one of claims 1 to 4.