JP2019090015A - Ink composition for printing - Google Patents

Abstract

To develop and provide an ink composition for printing that enables mixed spinning and printing having high color development property.SOLUTION: An ink composition for printing contains at least polyester resin particles and a styrene-butadiene resin emulsion, and a dispersion dye.SELECTED DRAWING: None

Description

  The present invention relates to an ink composition for printing blended fiber comprising polyester fiber.

Compared to printing methods such as screen printing, roller printing, and rotary printing, inkjet printing of fiber materials using an inkjet printer is
(1) The plate-making process is unnecessary and the process can be shortened,
(2) The ability to make digitized designs as they are through a computer
(3) It is possible to produce many kinds of products in small quantities,
(4) The waste liquid of dye color paste can be greatly reduced,
There are many merits such as that, but there are problems such as slow processing speed and difficulty in reproducing dark color compared to the conventional plate-making printing, and it can be used in the range of sample production and small volume production There were many. In recent years, technological advances in computer image processing and print head manufacturing have significantly improved the printing speed of inkjet printers, and digitization of printing designs, diversification of printing processes, and small-lot printing have become markets. With the background that has been required in Japan, the spread of ink jet printing is progressing. In particular, the sublimation transfer method in which dye ink printed on paper is transferred to polyester fibers by heat is rapidly increasing in popularity due to its simplicity and the like.

  As dye inks for inkjet printing, acid dye inks for polyamide fibers such as silk and nylon; disperse dye inks for polyester fibers; reactive dye inks for cellulose fibers such as cotton and rayon; and the like are sold. It is done. The dye ink for ink jet printing is generally an aqueous ink in which the dye is dissolved or dispersed in water, and ethylene glycol, for the purpose of suppressing the drying of the ink by water evaporation and adjusting the viscosity of the ink. Compounds such as glycols such as diethylene glycol, propylene glycol and triethylene glycol, monoalkyl ethers of these glycols, and organic solvents such as glycerin are added to the ink.

  As described above, disperse dye inks are widely used for industrial dyeing of hydrophobic fibers such as polyester, and are used for dyeing by dispersing a water-insoluble dye in a dye bath or in a color paste. The dye penetrates and diffuses into the inside of the fiber under high temperature conditions, and is dyed by hydrogen bonding or intermolecular force between the fiber and the dye. Therefore, when the dispersibility of the dye, particularly the dispersibility at high temperature is poor, the dye is coagulated in the high temperature dye bath, and color unevenness tends to occur on the fiber. For this reason, conventionally, dispersants excellent in dispersibility at high temperature environment for textile dyeing, such as formaldehyde condensates of lignin sulfonic acid, formaldehyde condensates of alkyl naphthalene sulfonic acid, formaldehyde condensate of creosote oil sulfonic acid Anionic dispersants such as styrene acrylic acid copolymers have mainly been used.

  In recent years, inkjet printing of polyester fibers using disperse dyes is also being carried out (see, for example, Patent Document 1 and Patent Document 2), and dye ink is mainly applied to the fibers (printed), and then the dyes are treated by heat treatment such as steaming. The direct printing method for dyeing and the thermal transfer printing method for sublimation transfer of dyes from the intermediate recording medium side to the fiber side by heat after the dye ink is applied (printed) to the intermediate recording medium (transfer paper for exclusive use) are put to practical use ing.

  On the other hand, in recent years, blends including polyester and other types of fibers in arbitrary proportions as functional fibers such as HEATTECH are becoming mainstream in the apparel industry, and the application of inkjet processing to such blends is required .

  On the other hand, a pigment ink has been proposed as an ink for the purpose of mixed textile printing, and additives and the like for enhancing the printing fastness of textiles have been proposed. However, the pigment ink is not inherently dyed to fibers, but the pigment particles are physically attached to the cloth, so the problem is that the color developability is inferior, and the color developability is excellent. There is a need for dye inks compatible with mixed textile printing.

JP, 2014-94994, A WO 2016/027835 WO 2016/027881

  An object of the present invention is to provide a mixed printing ink composition containing polyester fibers.

  As a result of intensive studies to solve the above problems, the present inventors dispersed the polyester resin particles, an ink composition containing a styrene-butadiene resin emulsion as a binder resin emulsion, and a disperse dye in a blend containing polyester fibers. It made it possible to print mixed yarns that are excellent in dye fixation and have high color forming properties.

That is, the gist configuration of the present invention is as follows.
1)
A printing ink composition comprising at least polyester resin particles, a styrene-butadiene resin emulsion, and a disperse dye.
2)
The ink composition for textile printing as described in 1) whose diameter of the said polyester resin particle is 500 nm or less.
3)
The ink composition for textile printing as described in 1) or 2) whose diameter of the said polyester resin particle is 200 nm or less.
4)
The ink composition for textile printing according to any one of 1) to 3), wherein the diameter of the polyester resin particles is 100 nm or more and 150 nm or less.
5)
The printing ink composition according to any one of 1) to 4), wherein the content of the polyester resin particles is 1 to 20% by mass in the printing ink composition.
6)
The printing ink composition according to any one of 1) to 5), wherein the content of the styrene-butadiene resin emulsion is 1 to 30% by mass in the printing ink composition.
7)
A fabric printed using the printing ink composition.
8)
The fabric according to 7), wherein the fabric comprises blended fibers.
9)
The fabric according to 8), wherein the blended fiber is a PET blended fiber.
10)
A textile printing method, wherein the textile printing step using the textile printing ink composition includes an ink jet dyeing method.
11)
10) A fabric printed by the printing method described in 10).

  The present invention provides a printing ink composition which enables high color development in blended printing including polyester fibers using a disperse dye.

  In the present specification, unless otherwise noted, “%” and “parts”, including the examples and the like, are all described on a mass basis. The printing ink composition may be abbreviated as "ink" or "aqueous ink", respectively.

  The printing ink composition of the present invention comprises at least polyester resin particles, a styrene-butadiene resin emulsion, and a disperse dye.

The particle diameter of the polyester resin particles is preferably 500 nm or less, more preferably 200 nm or less, and particularly preferably 100 nm or more and 150 nm or less.
Examples of polyester resin particles include Diacron FC-316, Diacron FC-2232, Diacron FC-684, Diacron FC-1224 and the like manufactured by Mitsubishi Rayon Co., Ltd.

  The content of the polyester resin particles is preferably 1 to 20% of the ink composition for printing.

  Examples of the styrene-butadiene resin emulsion include emulsions of resins such as styrene-butadiene copolymer, carboxy-modified styrene-butadiene resin, high styrene-containing styrene-butadiene resin, etc., and are sold in the form of latex (emulsion) There are many things that can be purchased easily. Specific examples thereof include, for example, Nipol LX 415 M, Nipol LX 432 M, Nipol LX 433 C, Nipol LX 421, Nipol 2507 H, Nipol LX 303 A (all manufactured by Nippon Zeon Co., Ltd.), grades 0695, 0696, 0561, 0589, 0602, 2108, Examples thereof include latexes of 0533, 0545, 0548, 0568, 0569, 0573, 0597C, 0850Z (all manufactured by JSR Corporation), and the like, most of which are liquids obtained by emulsifying a resin at a solid content of 30 to 60%. As the styrene-butadiene resin, any of the above-mentioned latexes can be used, but it is preferable to use a carboxy-modified styrene-butadiene resin. Examples of such resins include, for example, Nipol LX 415 M, Nipol LX 432 M, Nipol LX 433 C, Nipol LX 421, 0695, 0696, 0533, 0545, 0568, 0569, 0573, 0597C, 0850Z, 0695, 0533, 0568, 0597C, 0850Z are preferable, and JSR 0568 (manufactured by JSR Corporation) is more preferable. The styrene-butadiene resin may be used alone or in combination of two or more.

  The content of the styrene-butadiene resin emulsion is preferably 1 to 30% of the ink composition for printing.

Dispersion dye ink
(Dispersing dye)
The printing ink composition contains a disperse dye.

Since the above ink is intended for printing in full color, it is necessary to prepare inks having various hues such as yellow, orange, brown, red, violet, blue, green and black, and use them together as an ink set Can.
As the disperse dyes used in the above-mentioned ink, the following ones can be used, and in order to apply to the above-mentioned ink jet dyeing method (direct print), disperse dyes having steaming suitability are preferable. I. Disperse Yellow 42, 49, 76, 83, 88, 93, 99, 114, 119, 126, 160, 163, 165, 180, 183, 186, 198, 199, 200, 224, 237; I. Disperse Orange 29, 30, 31, 38, 42, 44, 45, 53, 54, 55, 71, 73, 80, 86, 96, 118, 119; I. Disperse Red 73, 88, 91, 92, 111, 127, 131, 143, 145, 146, 152, 153, 154, 179, 191, 192, 206, 221, 258, 283, 302, 323, 328, 359; C. I. Disperse Violet 26, 35, 48, 56, 77, 97; I. Disperse Blue 27, 54, 60, 73, 77, 79, 79: 1, 87, 143, 165, 165, 165: 2, 181, 185, 197, 225, 257, 266, 267, 281, 341, 341, 341 353, 354, 358, 364, 365, 368 and the like. These may be used alone or in combination of two or more.

  Further, for application to a dyeing method using a thermal transfer and sublimation transfer system, known disperse dyes and oil-soluble dyes can be used, and dyes having thermal transfer suitability are preferably used. I. Disperse Yellow 51, 54, 60; C.I. I. Disperse Orange 5, 7, 20, 23, 25; C.I. I. Disperse Red 4, 50, 53, 59, 60, 239, 240; I. Disperse Brown 26, 27; I. Disperse Violet 8, 11, 17, 26, 27, 28, 36; I. Disperse Blue 3, 5, 26, 35, 55, 56, 72, 81, 91, 108, 359, 360; I. Solvent Yellow 114, C.I. I. Solvent Orange 67, C.I. I. Solvent Red 146, C.I. I. Solvent Blue 36, 63, 83, 105, 111 and the like. These may be used alone or in combination of two or more. In addition to known disperse dyes, the above-mentioned disperse dyes also include known oil-soluble dyes. As the disperse dye for the above-mentioned printing ink composition, C.I. I. Disperse Yellow, C.I. I. Disperse Red, C.I. I. It is preferable to use a dye selected from disperse blue, C.I. I. Disperse Yellow 54, C.I. I. Disperse Red 60, C.I. I. It is particularly preferred to use Disperse Blue 359.

  In each of the above-described disperse dyes, a mixed dye which is mainly composed of a blue-based dye and is blended with an orange-based dye and a red-based dye can also be used as a black-based dye. The black-based dye may further contain other disperse dyes for the purpose of finely adjusting to a high-quality, tintless color tone.

  As the above-mentioned disperse dye, dyes such as powdery or bulk dry, wet cake and the like can be used. There are various types of commercially available dyes, such as powders for industrial dyeing, liquid products for printing, ink jet printing, etc., and their production methods, purity, etc. are different. The ink composition of the present invention is preferably prepared using a material with as few impurities as possible in order to reduce storage stability and adverse impact on discharge accuracy from the ink jet printer. In general, inorganic dyes such as sodium chloride are often mixed in at the time of synthesis of the dye, and water which is not particularly subjected to the purification operation contains metal ions such as calcium ions and magnesium ions. Even when water or the like is used at the time of preparation of the ink composition, the ions or the like are mixed in a small amount. Hereinafter, in the present specification, the above-mentioned inorganic salts and metal ions will be described as “inorganic impurities” for the sake of convenience. These inorganic impurities not only deteriorate the solubility and storage stability of the dye to the ink and the like, but also cause the corrosion, abrasion and nozzle clogging of the ink jet printer head. In order to remove these inorganic impurities, it is desirable to remove inorganic impurities contained in the ink composition as much as possible using known methods such as ultrafiltration, reverse osmosis membrane method, ion exchange method and the like. The amount of inorganic impurities contained in the total amount of the ink composition is usually 1% by mass or less, preferably 0.1% by mass or less, and more preferably 0.01% by mass or less. The lower limit may be below the detection limit of the detection instrument, ie 0%. Then, after removing inorganic impurities, it is preferable to adjust to a desired dye concentration by dilution or concentration to obtain an ink composition.

  The total content of the disperse dyes contained in the ink is usually 0.5 to 35% by mass, preferably 1 to 20% by mass, more preferably 5 to 20% by mass, based on the total mass of the ink. It is more preferably 5 to 15% by mass.

  The content of the disperse dye is usually 3 to 50% by mass, preferably 4 to 40% by mass, and more preferably 5 to 30% by mass, with respect to the total mass of the ink.

(Dispersant)
The ink may contain a dispersant. Examples of the dispersant include styrene- (meth) acrylic copolymers, formalin condensates of aromatic sulfonic acids, and the like.

  As said styrene- (meth) acryl copolymer, the copolymer of a styrene-type monomer and a (meth) acryl-type monomer is mentioned, for example. In the present specification, "(meth) acrylic" means the meaning of "acrylic" and / or "methacrylic". Specific examples of these copolymers include (.alpha.-methyl) styrene-acrylic acid copolymer, (.alpha.-methyl) styrene-acrylic acid-acrylic acid ester copolymer, (.alpha.-methyl) styrene-methacrylic acid copolymer. Polymer, (α-methyl) styrene-methacrylic acid-acrylic acid ester copolymer, (α-methyl) styrene-maleic anhydride copolymer, acrylic acid ester-maleic anhydride copolymer, ( α-Methyl) styrene-acrylic acid ester- (anhydride) maleic acid copolymer, acrylic acid ester-allyl sulfonic acid ester copolymer, acrylic acid ester-styrene sulfonic acid copolymer, (α-methyl) styrene-methacrylic acid Sulfonic acid copolymer, polyester-acrylic acid copolymer, polyester-acrylic acid-acrylic acid ester copolymer, polymer Ester - methacrylic acid copolymer, polyester - methacrylic acid - acrylic acid copolymer ester; and the like. Among these, those in which the compound containing an aromatic hydrocarbon group is styrene are preferable. In the present specification, (α-methyl) styrene is used as a meaning including α-methylstyrene and styrene.

Specific examples of the styrene- (meth) acrylic copolymer in the above ink include Joncryl ^RTM 52J, 57J, 60J, 63J, 70J, JDX-6180, HPD-196, HPD 96J, PDX-6137A, 6610, JDX-6500, Although JDX-6639, PDX-6102B, PDX-6124 (made by BASF) etc. can be mentioned, It is not limited to these. In the present specification, superscript RTM means a registered trademark.

  The styrene- (meth) acrylic copolymer in the above ink preferably has a weight average molecular weight of 1,000 to 20,000, more preferably 2,000 to 19,000, and 4,000 to 17, 000 is particularly preferred. The weight average molecular weight of the said styrene-acrylic acid type copolymer is measured by GPC (gel permeation chromatography) method. The glass transition temperature of the styrene- (meth) acrylic copolymer is preferably 45 ° C to 135 ° C, more preferably 55 ° C to 120 ° C, and particularly preferably 60 to 110 ° C. Further, the oxidation of the styrene- (meth) acrylic copolymer used as the component (B) is preferably 50 to 250 mg KOH / g, more preferably 100 to 250 mg KOH / g, and 150 to 250 mg KOH / g. Particularly preferred. When the acid value is too small, the solubility of the resin in water is deteriorated, and particularly when the colorant is a dispersible dye or pigment, the dispersion stabilizing ability tends to be poor, and when the acid value is too large, the aqueous medium This is not preferable because the affinity of the toner becomes strong, and bleeding tends to occur in the printed image. The acid value of the resin represents the number of mg of KOH required to neutralize 1 g of the resin, and is measured according to JIS-K3054.

  Specific examples of preferable styrene- (meth) acrylic copolymer in the above ink include Joncryl 67 (weight average molecular weight = 12,500, acid value = 213 mg KOH / g), 678 (weight average molecular weight = 8,500, acid) Value: 215 mg KOH / g), 682 (weight average molecular weight = 1,700, acid value = 230 mg KOH / g), 683 (weight average molecular weight = 4,900, acid value = 215 mg KOH / g), 690 (weight average molecular weight = 16) , 500, acid value = 240 mg KOH / g), etc., and more preferably Joncryl 678.

  The ink can be made using two or more styrene-acrylic copolymers when dispersing or dissolving the disperse dye.

  In addition, dispersion | distribution of the disperse dye mentioned above can be performed by the following method, for example. A styrene-acrylic copolymer is charged into a water-soluble organic solvent, and the temperature is raised to 90-120 ° C. to prepare a styrene-acrylic copolymer solution, into which an alkaline compound and water are charged. Lower to make an emulsion (emulsion or microemulsion), and mix and disperse the prepared emulsion and the disperse dye.

  Examples of formalin condensates of the above aromatic sulfonic acids include: creosote oil sulfonic acid; cresol sulfonic acid; phenol sulfonic acid; β-naphthalenesulfonic acid; β-naphthol sulfonic acid; β-naphthaline sulfonic acid and β-naphthol sulfone Examples include formalin condensates such as acids; cresol sulfonic acid and 2-naphthol-6-sulfonic acid; lignin sulfonic acid; Among them, formalin condensates of creosote oil sulfonic acid; β-naphthalenesulfonic acid; lignin sulfonic acid; are preferred. The formalin condensate of these aromatic sulfonic acids may be a salt such as sodium salt, potassium salt, lithium salt and the like, and these salts or mixtures thereof are meant. These can be obtained as commercial products under various trade names. For example, demol N as a formalin condensate of β-naphthalene sulfonic acid; Laberin W series as formalin condensate of creosote oil sulfonic acid; demol C as demolin C as special aromatic sulfonic acid; B (all are made by Kao Co., Ltd.); Examples of formalin condensates of methyl naphthalene sulfonic acid include Laveline AN series (all by Dai-ichi Kogyo Seiyaku Co., Ltd.); and the like. Among these, demol N, laberin W series and laberin AN series are preferable, demol N and laberin W are more preferable, and laberin W is more preferable. The formalin condensates of the above aromatic sulfonic acids can be used alone or in combination of two or more.

  The dispersant preferably contains at least one selected from the group consisting of a styrene- (meth) acrylic copolymer or a formalin condensate of an aromatic sulfonic acid, and a styrene- (meth) acrylic copolymer It is further preferable that at least one selected from the group consisting of formalin condensates of creosote oil sulfonates be included.

(Other ingredients)
The above-mentioned ink contains, as other components, an ink preparation agent such as a pH adjuster, an antiseptic and fungicide, a chelating agent, a rust inhibitor, an ultraviolet absorber, a viscosity adjuster, an antifading agent, a surface tension adjuster and an antifoamer. You may contain.

  Examples of the pH adjuster include hydroxides of alkaline earth metals such as sodium hydroxide, potassium hydroxide and lithium hydroxide; triethanolamine, diethanolamine, dimethylethanolamine, diethylethanolamine, tris (hydroxymethyl) aminomethane And the like, preferably mono, di or tri C 1 -C 4 alkyl amines which may be substituted with a hydroxy group; and the like. Of these, triethanolamine is preferred. The ink preferably contains a pH adjuster, and the content thereof is usually 0.05 to 3% by mass, preferably 0.05 to 2.5% by mass, based on the total mass of the ink composition. Preferably it is 0.1-2 mass%.

  Examples of the antiseptic and fungicide include sodium dehydroacetate, sodium benzoate, sodium pyridinethion-1-oxide, zinc pyridinethion-1-oxide, 1,2-benzisothiazolin-3-one, 1-benzisothiazolin-3 And amine salts of On, Prochem GXL manufactured by Arch Chemicals, etc., preferably Proxel GXL.

  Examples of the chelating agent include disodium ethylenediaminetetraacetate, sodium nitrilotriacetate, sodium hydroxyethylethylenediamine triacetate, sodium diethylenetriaminepentaacetate, sodium uracil diacetate and the like.

  Examples of the rust inhibitor include acid sulfite, sodium thiosulfate, ammonium thioglycolate, diisopropyl ammonium nitrite, pentaerythritol tetranitrate, dicyclohexyl ammonium nitrite and the like.

  Examples of the ultraviolet absorber include benzophenone compounds, benzotriazole compounds, cinnamic acid compounds, triazine compounds, and stilbene compounds. In addition, a compound which absorbs ultraviolet light represented by a benzoxazole type compound and emits fluorescence, a so-called fluorescent whitening agent, etc. can also be used.

  Examples of the viscosity modifier include water-soluble polymer compounds in addition to water-soluble organic solvents, for example, polyvinyl alcohol, cellulose derivatives, polyamines, polyimines, poly C2-C3 alkylene glycol having a molecular weight of about 20,000 or less, preferably Examples thereof include liquid polyalkylene glycols and the like, and examples thereof include polyoxypropylene diglyceryl ethers such as SC-P400, SC-P750, SC-P1000, SC-P1200, and SC-P1600 manufactured by Sakamoto Yakuhin Kogyo Co., Ltd .; Examples thereof include polyoxyethylene diglyceryl ether such as SC-E450, SC-E750, SC-E1000, SC-E1500, and SC-E2000, and the like, and SC-P1000 is preferably used.

  The antifading agent is used for the purpose of improving the storability of the image. As the antifading agent, various organic and metal complex antifading agents can be used. Examples of organic antifading agents include hydroquinones, alkoxyphenols, dialkoxyphenols, phenols, anilines, amines, amines, indanes, chromans, alkoxyanilines, heterocycles and the like, and metal complexes As nickel, a nickel complex, a zinc complex, etc. are mentioned.

  As said surface tension regulator, surfactant is mentioned, For example, anionic surfactant, nonionic surfactant, cationic surfactant, and amphoteric surfactant etc. are mentioned.

  As the above-mentioned anionic surfactant, alkyl sulfocarboxylic acid salt; α-olefin sulfonic acid salt; polyoxyethylene alkyl ether acetate salt; N-acyl amino acid or salt thereof; N-acyl methyl taurine salt; alkyl sulfate polyoxyalkyl ether Sulfates; alkyl sulfates polyoxyethylene alkyl ether phosphates; rosin acid soaps; castor oil sulfates; lauryl alcohol sulfates; alkylphenol type phosphates; alkyl type phosphates; alkyl aryl sulfonates; diethyl sulfosuccinic acid And salts thereof, and sulfo boric acid systems such as diethyl hexyl sulfophosphate, dioctyl sulfoborate and the like; and the like. It is preferably a sulfosuccinic acid type, and examples of commercially available products include Lion Co., Ltd., trade names Lipar 835 I, 860 K, 870 P, NTD, MSC, and Adeka Co., Ltd. trade names. Adekal EC 8600; product name Perex OT-P, product name CS, product name TA, product name Kao Co., Ltd. product: Shin Nippon Rika Co., Ltd. product Rika Miled ES-100, product ES-200, product Rikasurf P-10, Same M-30, same M-75, same M-300, same G-30, same G-600; manufactured by Toho Chemical Industry Co., Ltd., sucnol L-300, same L-40, same L-400, same NL-400; and the like.

  The content of the anionic surfactant is generally 0.05 to 2% by mass, preferably 0.05 to 1.5% by mass, based on the total mass of the ink composition of the present invention, and more preferably It is 0.05 to 1% by mass, particularly preferably 0.1 to 0.5% by mass.

  Examples of the nonionic surfactant include ethers such as polyoxyethylene nonyl phenyl ether, polyoxyethylene octyl phenyl ether, polyoxyethylene dodecyl phenyl ether, polyoxyethylene oleyl ether, polyoxyethylene lauryl ether, polyoxyethylene alkyl ether and the like Esters of polyoxyethylene oleic acid ester, polyoxyethylene distearate, sorbitan laurate, sorbitan monostearate, sorbitan monooleate, sorbitan sesquioleate, polyoxyethylene monooleate, polyoxyethylene stearate, etc. Acetylene alcohol such as 3,5-dimethyl-1-hexyn-3-ol; 2,4,7,9-tetramethyl-5-decyne-4,7 Diol, 3, 6-dimethyl-4-octin-3, 6-diol, manufactured by Air Products Co., Ltd., trade name Surfynol 104, 104 PG 50, 82, 420, 440, 465, 485; Olfin STG; And acetylene glycols and the like. Among the above, it is preferably acetylene glycol or acetylene alcohol, and more preferably acetylene glycol.

  The content of the nonionic surfactant is generally 0.05 to 2% by mass, preferably 0.05 to 1.5% by mass, based on the total mass of the ink composition of the present invention, and more preferably It is 0.05 to 1% by mass, particularly preferably 0.1 to 0.5% by mass.

  Examples of the cationic surfactant include 2-vinylpyridine derivatives and poly 4-vinylpyridine derivatives.

  Examples of the amphoteric surfactant include lauryl dimethylaminoacetic acid betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, coconut oil fatty acid amidopropyl dimethylaminoacetic acid betaine, polyoctyl polyaminoethyl glycine, and other imidazolines Derivatives and the like can be mentioned.

  Examples of the antifoaming agent include highly oxidized oil type, glycerin fatty acid ester type, fluorine type and silicone type compounds.

  In the above-mentioned ink, the order in which the respective components are added is not particularly limited, and the ink may be prepared by mixing until the solution substantially becomes a solution by stirring. As described above, water used in preparation of the ink may be one having a small amount of inorganic impurities, such as distilled water or ion exchanged water. As the ink, it is preferable to use a filtrate from which impurities are precisely filtered using a membrane filter or the like. The pore size of the filter at the time of microfiltration is usually 1 μm to 0.1 μm, preferably 0.8 μm to 0.1 μm. In addition, the content of the inorganic impurities is usually 1% or less, preferably 0.1% or less, more preferably 0.01% or less, based on the total mass of the ink. The lower limit can be below the detection limit of the detection instrument, ie 0%. Then, after removing the inorganic impurities, the ink can be obtained by adjusting to a desired dye concentration by dilution or concentration.

  The ink is an aqueous ink and contains water. As water, ion-exchanged purified water is generally used. Water not particularly subjected to the purification operation contains metal ions such as calcium ions and magnesium ions. Therefore, even when such water is used at the time of preparation of the ink, the ions and the like are mixed in a small amount. In the present specification, the above-mentioned inorganic salts and metal ions are referred to as “inorganic impurities” for convenience. These inorganic impurities are preferably reduced in order to deteriorate the solubility and storage stability in the ink.

  The above ink is intended to improve the discharge response at high speed when used in a printer equipped with an industrial inkjet head, and the viscosity is usually 3 when measured at 25 ° C. with an E-type viscometer. The viscosity is preferably in the range of -20 mPa · s, preferably 8-20 mPa · s.

  The above ink is intended to improve the quality of printed matter when used in a printer equipped with an industrial inkjet head, and usually 20 to 40 mN / m when the surface tension at 25 ° C. is measured by a plate method, Preferably, the range of 25 to 35 mN / m is preferable.

  The above ink is intended to improve the continuous discharge performance at high speed under a low temperature environment when used in a printer equipped with an industrial ink jet head, and the dynamic surface tension at 10 Hz at 5 ° C. is the maximum bubble. When measured by a pressure method, a range of usually 25 to 45 mN / m, preferably 30 to 40 mN / m is preferable.

  The ink contains polyester resin particles, a styrene-butadiene resin emulsion and a disperse dye, with the balance being water. In addition to these, it is possible to include a water-soluble organic solvent, the above-mentioned ink preparation agent and the like.

  Examples of the water-soluble organic solvent used for the ink include polyhydric alcohols and pyrrolidones. Examples of polyhydric alcohols include C2-C6 polyhydric alcohols having 2 or 3 alcoholic hydroxyl groups, and polyC2-C3 alkylene glycols having a molecular weight of about 20,000 or less and having 4 or more repeating units, preferably liquid And polyalkylene glycols of the like. Specific examples thereof include C2-C6 polyhydric alcohols having two or three alcoholic hydroxyl groups such as glycerin, 1,3-pentanediol, 1- (2-hydroxyethyl) -2-pyrrolidone, etc .; ethylene glycol, diethylene glycol, Examples include di- or tri-C2-C3 alkylene glycols such as triethylene glycol, propylene glycol and polyethylene glycol; poly-C2-C3 alkylene glycols such as polypropylene glycol; and the like. As pyrrolidones, 2-pyrrolidone, N-methyl-2-pyrrolidone and the like can be mentioned. The water-soluble organic solvent may be used alone but is preferably used in combination. The water-soluble organic solvent is used with the expectation of effects such as prevention of ink drying (wet); viscosity adjustment; adjustment of surface tension; defoaming; and penetration promotion to fibers; It is preferable to contain it. The total content of the water-soluble organic solvent is usually 1 to 50% by mass, preferably 5 to 40% by mass, more preferably 10 to 35% by mass, particularly preferably 10 to 20% by mass, based on the total mass of the ink. %.

  The above-mentioned ink adds a dye dispersion, 1,5-pentadiol, a surfactant to water, further adds the above-mentioned water-soluble organic solvent and an ink regulator as required, and stirs, and the whole is uniformly mixed. It is obtained by The order in which the respective components are added is not particularly limited, and the ink may be prepared by mixing until substantially uniform by stirring. As described above, water used in the preparation of the ink may be one having a small amount of inorganic impurities, such as distilled water or ion exchanged water. When the ink composition of the present invention is used for ink jet printing, it is preferable to precisely filter the ink composition of the present invention using a membrane filter or the like, and use as a ink a filtrate obtained by removing contaminants. The pore size of the filter when microfiltration is performed is usually 10 μm to 0.1 μm, preferably 8 μm to 1 μm.

  The printing method is a method in which the above-mentioned ink, preferably the ink is filtered with a membrane filter or the like to remove impurities and used as an ink, and then the ink is used to print fibers, preferably polyester fibers. . There is no restriction | limiting in particular about the ink nozzle etc. which are used at the time of ink printing, According to the objective, it can select suitably. More specifically, it is preferable to print on a fabric mainly composed of polyester fibers.

As a method A of printing on fibers using the above-mentioned ink, a method of sequentially performing the following two steps may be mentioned.
[Step 1A]
A step of discharging ink droplets of the ink by an ink jet printer using the above ink and applying the ink to fibers.
[Step 2A]
Step of reactively fixing the dye in the ink applied in step 1A to the fiber by heat.

  As a method of applying the ink to the fibers in the step 1A, the container filled with the ink is loaded at a predetermined position of an ink jet printer, and ink droplets of the ink are ejected according to a recording signal to apply the fibers. Printing, i.e., printing can be carried out by the usual ink jet printing method.

  As a step of fixing the dye in the ink to the fiber by heat in the step 2A, a method of steaming the fiber to which the ink is applied at 160 ° C. to 220 ° C. for 1 to 20 minutes may be mentioned. .

Moreover, as the method B of printing to a fiber using the said ink, the sublimation transfer printing method which performs the following two processes one by one is mentioned.
[Step 1B]
A step of discharging ink droplets of the ink by an ink jet printer using the ink and applying the ink droplets to paper.
[Step 2B]
Step of sublimation transfer the dye in the ink applied in step 1B from the printing paper to fibers by heat.

  As a method of applying the ink to paper in the step 1B, a container filled with the ink is loaded at a predetermined position of an ink jet printer, and ink droplets of the ink are ejected according to a recording signal to apply to paper Printing, i.e., a conventional inkjet image forming method.

  As a process of subjecting the dye in the ink to sublimation transfer from paper to fibers by heat in the step 2B, a method in which the paper to which the ink is applied is predried at room temperature and then subjected to a heat press treatment etc. Can be mentioned. As a condition of the heat press treatment, a temperature of 160 to 220 ° C. and a condition of pressing the fiber and paper for 1 to 5 minutes are preferable.

  Examples of the fabric include T / C mixed broad (T / C mixed fiber: mixed fiber of PET and cotton) and the like, and a fabric containing mixed fiber is preferable, and the mixed fiber is a PET (polyethylene terephthalate) mixed fiber More preferably, it is a fiber. In the present specification, T / C blending refers to fibers in which polyester (PET) and cotton (cotton) are blended in any ratio.

  A fabric printed using the above ink composition, a printing method including a printing step using the printing ink composition, a printing method including the inkjet dyeing method, and a fabric printed by the printing method Is also included in the present invention.

  EXAMPLES The present invention will be described more specifically by the following examples, but the present invention is not limited by these examples. Unless otherwise noted in the examples, "parts" means parts by weight, and "%" means mass%.

Preparation of Joncryl 678 Emulsion Solution 40 parts of Joncryl 678 (manufactured by BASF) was added to 48% sodium hydroxide (3.1 parts), ion-exchanged water (96.9 parts), propylene glycol (60 parts), The emulsion liquid of Joncryl 678 was obtained by raising the temperature to 90 to 120 ° C. and stirring for 5 hours.

Preparation of Dispersion Dp1 for Ink C. I. 30 parts of Disperse Yellow 54, 45 parts of the above emulsion of Joncryl 678, 0.2 parts of Surfynol 104PG50, 0.2 parts of Proxel GXL (S), and 100 parts in total of ion-exchanged water After stirring and mixing, 0.2 mm diameter glass beads were added to the mixture, and dispersion treatment was performed for about 15 hours under water cooling with a sand mill. Ion exchange water was added to the obtained solution to prepare a dye content of 15% in the total mass of the solution. The liquid after preparation was filtered through glass fiber filter paper GC-50 (manufactured by ADVANTEC) to obtain an ink dispersion Dp1 having a dye content of 15%.

Preparation of Dispersion Dp2 for Ink C. I. 30 parts of Disperse Red 60, 45 parts of the above-mentioned emulsion of Joncryl 678, 0.2 parts of Surfynol 104PG50, 0.2 parts of Proxel GXL (S), and 100 parts in total of ion-exchanged water After stirring and mixing, 0.2 mm diameter glass beads were added to the mixture, and dispersion treatment was performed for about 15 hours under water cooling with a sand mill. Ion exchange water was added to the obtained solution to prepare a dye content of 15% in the total mass of the solution. The liquid after preparation was filtered through a glass fiber filter paper GC-50 (manufactured by ADVANTEC) to obtain an ink dispersion Dp2 having a dye content of 15%.

Preparation of Dispersion Dp3 for Ink C. I. 30 parts of Disperse Blue 359, 45 parts of the above emulsion of Joncryl 678, 0.2 parts of Surfynol 104PG50, 0.2 parts of Proxel GXL (S), and 100 parts in total of ion-exchanged water After stirring and mixing, 0.2 mm diameter glass beads were added to the mixture, and dispersion treatment was performed for about 15 hours under water cooling with a sand mill. Ion exchange water was added to the obtained solution to prepare a dye content of 15% in the total mass of the solution. The liquid after preparation was filtered through a glass fiber filter paper GC-50 (manufactured by ADVANTEC) to obtain an ink dispersion Dp3 having a dye content of 15%.

Preparation of polyester resin particle dispersion liquid Dp4 for ink 45 parts of the above emulsion of Joncryl 678, 0.2 parts of Surfynol 104PG50, 30 parts of polyester resin (polyester resin manufactured by Mitsubishi Rayon Co., Ltd .: Diamond FC-316) 0.2 parts of GXL (S) and 24.8 parts of ion-exchanged water were added to make a total of 100 parts. The mixture was stirred and mixed, 0.2 mm diameter glass beads were added to the mixture, and water cooled with a sand mill under ca. Time distributed processing was performed. Ion-exchanged water was added to the obtained solution to prepare a polyester resin content of 15% in the total mass of the solution. The liquid after preparation was filtered through a glass fiber filter paper GC-50 (manufactured by ADVANTEC) to obtain a polyester resin particle dispersion Dp4 (diameter 142 nm) for ink having a polyester resin content of 15%.

Preparation of polyester resin particle dispersion liquid Dp5 for ink 45 parts of the above emulsion of Joncryl 678, 0.2 parts of Surfynol 104PG50, 30 parts of polyester resin (polyester resin manufactured by Mitsubishi Rayon Co., Ltd .: Diamond FC 2232) 0.2 parts of GXL (S) and 24.8 parts of ion-exchanged water were added to make a total of 100 parts. The mixture was stirred and mixed, 0.2 mm diameter glass beads were added to the mixture, and water cooled with a sand mill under ca. Time distributed processing was performed. Ion-exchanged water was added to the obtained solution to prepare a polyester resin content of 15% in the total mass of the solution. The liquid after preparation was filtered through glass fiber filter paper GC-50 (manufactured by ADVANTEC) to obtain a polyester resin particle dispersion Dp5 (diameter: 136 nm) having a content of polyester resin of 15%.

Abbreviations etc. in the following Table 1 have the following meanings.
DY 54: C.I. I. Disperse yellow 54
DR60: C.I. I. Disperse red 60
DB 359: C. I. Disperse Blue 359
FC-316: Polyester resin DIACLON FC-316
FC-2232: Polyester resin Diamond K FC 2232
JC 678 Em: Joncryl 678 Emulsion SF104: Surfynol 104 PG 50
GXL: Proxel GXL

  After mixing each component described in the following Table 2 using each dispersion obtained in the preparation example of the dispersion described above, the impurities are separated by filtration with a 5 μm membrane filter to obtain the inks of the respective examples and comparative examples. The composition was obtained. Examples 1 to 6 were inks containing a polyester resin dispersion liquid for ink, and Comparative Examples 1 to 3 were inks containing no polyester resin dispersion liquid for ink. In addition, in all the ink compositions, the total content of the colorant was adjusted to 4.8%.

Abbreviations etc. in the following Table 2 have the following meanings.
Dp1 to Dp5: Dispersions of Dp1 to Dp5 described in Table 1 above Gly: Glycerin PG: Propylene glycol J0568: JSR0568
EC8600: Adekacol EC-8600
GXL: Proxel GXL
TEA: Triethanolamine

  The ink compositions of Examples 1 to 6 and Comparative Examples 1 to 3 obtained above were subjected to inkjet printing on T / C mixed broad using Value Jet 628 (Wide Format Printer manufactured by Mutoh Kogyo Co., Ltd.). Subsequently, the ink-jet printed T / C mixed broad was dyed by heat treatment under conditions of 200 ° C. for 60 seconds using a tabletop automatic flat press (manufactured by Asahi Textile Machine Co., Ltd .: AF-65 TEN) The printed materials were obtained respectively. The color density (D value) of the obtained printed matter was measured. The measurement was evaluated for each color of YMC. At this time, there were portions in the fiber where color development due to transfer did not occur, and the uncolored portions were regarded as white spots, and the presence or absence of white spots was visually determined.

The evaluation results of Examples 1 to 6 and Comparative Examples 1 to 3 are shown below.
<Coloring property>
○: D value 0.7 0.7
Δ: 0.7> D value ≧ 0.4
×: 0.4> D value <white hole>
○: no whiteout ×: whiteout

  As is clear from the results in Table 3 above, Examples 1 to 6 using the ink composition for textile printing of the present invention are excellent in color development as compared with Comparative Examples 1 to 3, and there are no white spots due to defective dye fixation. , Had obtained a good print. From these results, it was shown that the printing ink composition of the present invention is capable of obtaining a very good printed material.

  The ink composition for printing of the present invention can be suitably used as an ink composition for printing mixed fiber, preferably for ink-jet mixed printing, in particular for polyester mixed cloth inkjet printing.

Claims (11)

  A printing ink composition comprising at least polyester resin particles, a styrene-butadiene resin emulsion, and a disperse dye.   The ink composition for textile printing according to claim 1, wherein the diameter of the polyester resin particles is 500 nm or less.   The ink composition for textile printing according to claim 1, wherein a diameter of the polyester resin particles is 200 nm or less.   The ink composition for textile printing according to any one of claims 1 to 3, wherein the diameter of the polyester resin particles is 100 nm or more and 150 nm or less.   The ink composition for textile printing according to any one of claims 1 to 4, wherein the content of the polyester resin particles is 1 to 20% by mass in the ink composition for textile printing.   The printing ink composition according to any one of claims 1 to 5, wherein a content of the styrene-butadiene resin emulsion is 1 to 30% by mass in the printing ink composition.   A fabric printed using the printing ink composition.   The fabric according to claim 7, wherein the fabric comprises blended fibers.   The fabric according to claim 8, wherein the blended fiber is a PET blended fiber.   A textile printing method, wherein the textile printing step using the textile printing ink composition includes an ink jet dyeing method.   A fabric printed by the printing method according to claim 10.