JP2019001857A - Printing inkjet ink, printing inkjet ink set and inkjet printing method - Google Patents

Abstract

To provide a printing inkjet ink that can perform printing with excellent color development and fastness.SOLUTION: The present invention provides a printing inkjet ink for use in printing of fabric, the printing inkjet ink containing C.I. DirectBlue 87 and C.I. DirectBlue 86, with a mass ratio between the contents being C.I. DirectBlue 87: C.I. DirectBlue 86 of 1:2-5:1.SELECTED DRAWING: None

Description

  The present invention relates to an inkjet ink for textile printing, an inkjet ink set for textile printing, and an inkjet textile printing method.

  The ink jet recording method is a method of recording by ejecting small ink droplets from fine nozzles and attaching them to a recording medium. This method has a feature that a high-resolution and high-quality image can be recorded at a high speed with a relatively inexpensive apparatus. In the ink jet recording method, there are a great number of consideration factors including the nature of the ink used, the stability in recording, and the quality of the obtained image, and research on not only the ink jet recording apparatus but also the ink jet ink to be used is also active. .

  In addition, fabrics and the like are dyed (printed) using an ink jet recording method. Conventionally, screen printing methods, roller printing methods, and the like have been used as printing methods for fabrics (woven fabrics and non-woven fabrics). From the viewpoints of various small-scale productivity and immediate printability, etc., an inkjet recording method should be applied. Has been studied in various ways.

  For example, textile printing inks used for inkjet textile printing have been studied. For example, the type of fabric, the color to be developed, the fastness of the image, etc. have been studied. ing. For example, Patent Document 1 discloses a composition containing a compound having a copper phthalocyanine skeleton. This composition has a hue and sharpness suitable for ink jet recording, and the recorded material has high light resistance and water fastness. There are descriptions such as little discoloration and fading even under acidic conditions.

JP 2000-303009 A

  There are many types of compounds (coloring materials: dyes, pigments, etc.) having a phthalocyanine skeleton used for cyan ink. Therefore, when developing an inkjet ink for textile printing, not only searching for a suitable color material but also a wide range of studies such as a combination of a plurality of color materials and their interaction are required.

  As a coloring material having a copper phthalocyanine skeleton, C.I. I. DirectBlue 87, C.I. I. DirectBlue 86 is relatively new. The inventors have conducted various detailed studies on the combination of these color materials, which have good color developability and fastness to some extent, in order to apply them to inkjet inks for textile printing. It has been found that when these color materials coexist in the ink, there is a blend (composition ratio) in which the color developability and fastness are remarkably improved. That is, it has been found that these color materials have a range in which a synergistic effect can be expected depending on the composition ratio in the ink.

  One of the objects according to some embodiments of the present invention is to provide an inkjet ink for printing, an inkjet ink set for printing, and an inkjet printing method capable of performing printing with good color development and fastness. is there.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following aspects or application examples.

One aspect of the inkjet ink for textile printing according to the present invention is:
An inkjet ink for textile printing used for textile printing,
C. I. DirectBlue 87 and C.I. I. DirectBlue 86, the mass ratio of its content, C.I. I. DirectBlue 87: C.I. I. DirectBlue 86 is 1: 2 to 5: 1.

  According to such an inkjet ink for textile printing, it is possible to print (print) an image with very good color development and fastness. That is, since the mass ratio of the color material included is 1: 2 or more (that is, the mass ratio of CI DirectBlue 87 to CI DirectBlue 86 is 50% or more), the color saturation of the printed material is not too low and bright. Good color developability is obtained, and the sweat fastness of the printed material is good. In addition, since the mass ratio of the color material contained is 5: 1 or less (that is, the mass ratio of CI DirectBlue 87 to CI DirectBlue 86 is 500% or less), the lightness of the printed material is not too high and good. Color development is obtained and the water fastness of the printed material is good.

In the inkjet ink for textile printing according to the present invention,
The cloth may include a polyamide fiber. According to such an inkjet ink for textile printing, it is possible to print (print) a fabric with a particularly good color development and fastness.

One aspect of the inkjet ink set for textile printing according to the present invention is:
An inkjet ink set for textile printing comprising at least cyan ink, magenta ink, yellow ink and black ink,
The cyan ink is the above-described inkjet ink for textile printing,
The magenta ink is C.I. I. Acid Red 52, C.I. I. Acid Red 138 and C.I. I. Including at least one of AcidRed 289,
The yellow ink is C.I. I. Acid Yellow 79, C.I. I. Acid Yellow 110 and C.I. I. Including at least one of Acid Yellow 184,
The black ink is C.I. I. AcidBlack 52: 1, C.I. I. AcidBlack 172 and C.I. I. It includes at least one of AcidBlack194.

  According to such an inkjet ink set for textile printing, the compatibility between the color materials is good, and when printing is performed by combining two or more colors, the fastness of the printed image is extremely high regardless of which combination is selected. Can be good.

In the inkjet ink set for textile printing according to the present invention,
Furthermore, including at least one of blue ink, orange ink, red ink and brown ink,
The blue ink is C.I. I. AcidBlue 112, C.I. I. AcidBlue 140 and C.I. I. Including at least one of AcidBlue 193,
The orange ink is C.I. I. Acid Orange 33 and C.I. I. Including at least one of Acid Orange 56,
The red ink is C.I. I. Acid Orange 94 and C.I. I. Including at least one of AcidRed 249,
The brown ink is C.I. I. Acid Brown 298 may be included.

  According to such an inkjet ink set for textile printing, the compatibility between the color materials is good, and when printing is performed by combining two or more colors, the fastness of the printed image is extremely high regardless of which combination is selected. Can be good.

In the inkjet ink set for textile printing according to the present invention,
The cloth may include a polyamide fiber. According to such an inkjet ink set for textile printing, it is possible to print (print) an image with particularly good color development and fastness on a fabric.

One aspect of the inkjet textile printing method according to the present invention is as follows:
Using the above-described textile printing ink-jet ink or the above-described textile printing ink-jet ink set, at least the following three processes A, B and C are sequentially performed.

Step A: Step of attaching ink to the fabric Step B: Step of applying at least one of heat and steam to the fabric obtained in Step A Step C: Step of washing the fabric obtained in Step B Such inkjet printing According to the method, it is possible to print (print) an image having very good color developability and fastness on a fabric. That is, the mass ratio of the color material contained in the inkjet ink for textile printing or the cyan ink of the inkjet ink set for textile printing is 1: 2 or more (that is, the mass ratio of CI DirectBlue 87 to CI DirectBlue 86 is 50%. Therefore, at least in cyan images, the color saturation of the printed material is not too low, and a bright and good color developability is obtained, and the sweat fastness of the printed material is good. In addition, since the mass ratio of the color material contained is 5: 1 or less (that is, the mass ratio of CI DirectBlue 87 to CI DirectBlue 86 is 500% or less), the lightness of the printed material is not too high and good. Color development is obtained and the water fastness of the printed material is good.

  In the inkjet textile printing method according to the present invention, the fabric may be a fabric containing polyamide fibers. According to such an ink-jet printing method, it is possible to print (print) a fabric with a particularly good color development and fastness.

In the present specification, “DB” is an abbreviation of “CI Direct Blue” unless otherwise specified. For example, “DB87” is a C.I. I. Direct
Refers to Blue87.

  Several embodiments of the present invention will be described below. Embodiment described below demonstrates an example of this invention. The present invention is not limited to the following embodiments, and includes various modified embodiments that are implemented within a range that does not change the gist of the present invention. Note that not all of the configurations described below are essential configurations of the present invention.

1. Ink-jet ink for textile printing The ink-jet ink for textile printing of the present embodiment (hereinafter also referred to as ink-jet ink for textile printing, ink, etc.) is used by being attached to a fabric by an ink-jet method. First, the inkjet ink for textile printing will be described.

  The inkjet ink for textile printing of the present embodiment has C.I. I. DirectBlue 87 (DB87) and C.I. I. DirectBlue 86 (DB86), the mass ratio of its content, C.I. I. DirectBlue 87: C.I. I. DirectBlue 86 “DB87 / DB86” is 1: 2 to 5: 1.

1.1. Coloring material and mass ratio thereof I. DirectBlue 86 (DB86) and C.I. I. The chemical structural formulas of DirectBlue 87 (DB87) are shown in the following formulas (1) and (2).

  C. I. Direct Blue 86 (DB86):

Ｃ．Ｉ．Ｄｉｒｅｃｔ Ｂｌｕｅ８７（ＤＢ８７）：

C. I. Direct Blue 87 (DB87):

式（１）、及び、式（２）中、フタロシアニン環の中心金属の銅（Ｃｕ）に隣接する４つの窒素（Ｎ）との結合は、２つ分は配位結合である。また、式（１）で表されるＤＢ８６の２つのスルホン酸基は、式（１）では、平面的に見てフタロシアニン環の対角の位置に配置されているが、隣り合う位置に配置されてもよい。式（１）、式（２）に示したように、ＤＢ８６は、２つのスルホン酸ナトリウム基を有し、ＤＢ８７は、３つのスルホン酸ナトリウム基を有している。

In the formulas (1) and (2), two bonds with four nitrogens (N) adjacent to the central metal copper (Cu) of the phthalocyanine ring are coordinate bonds. In addition, the two sulfonic acid groups of DB86 represented by the formula (1) are arranged at diagonal positions of the phthalocyanine ring as viewed in plan in the formula (1), but are arranged at adjacent positions. May be. As shown in Formula (1) and Formula (2), DB86 has two sodium sulfonate groups, and DB87 has three sodium sulfonate groups.

The contents of DB87 and DB86 in the inkjet ink for textile printing can be measured by an analytical method such as HPLC (high performance liquid chromatography), MS (mass spectrum), or a combination thereof. And the mass ratio of the content, C.I. I. DirectBlue 87: C.I. I. DirectBlue 86 can be calculated.

  In the inkjet ink for textile printing of the present embodiment, the value of “DB87: DB86” or “DB87 / DB86” is 1: 2 or more (that is, 50% by mass or more), so the saturation of the printed material is not too low. Bright and good color developability is obtained, and the sweat fastness of the printed material is good. Further, since the value of “DB87 / DB86” or “DB87: DB86” is 5: 1 or less (that is, 500% by mass or less), the lightness of the printed material is not too high, and good color developability is obtained, and The water fastness of the printed material is improved.

  The value of “DB87 / DB86” or “DB87: DB86” is more preferably 2: 3 or more (ie 67% by mass or more), 4: 1 or less (ie 400% by mass or less), and further preferably 3: 4 or more ( That is, 75% by mass or more) and 3: 1 or less (that is, 300% by mass or less).

  The total content of DB87 and DB86 in the inkjet ink for printing according to this embodiment is 1% by mass to 30% by mass, preferably 2% by mass to 15% by mass with respect to the total mass of the inkjet ink for printing. More preferably, it is 3 mass% or more and 10 mass% or less. Moreover, in the inkjet ink for textile printing of this embodiment, the total content when DB87 and DB86 are used as complementary colors is 0.01% by mass or more and 5% by mass or less, preferably based on the total mass of the inkjet ink for textile printing. Is 0.1 mass% or more and 4 mass% or less, More preferably, it is 0.5 mass% or more and 3 mass% or less.

1.2. Other components 1.2.1. Water The inkjet ink for textile printing according to this embodiment may contain water. Examples of water include water with reduced ionic impurities, such as pure water such as ion exchange water, ultrafiltration water, reverse osmosis water, and distilled water, and ultrapure water. In addition, when water sterilized by ultraviolet irradiation or addition of hydrogen peroxide is used, the generation of bacteria and fungi can be suppressed when the inkjet ink for printing is stored for a long period of time.

  The water content is 30% by mass or more, preferably 40% by mass or more, more preferably 45% by mass or more, and further preferably 50% by mass or more with respect to the total amount of the inkjet ink for textile printing. The water in the inkjet ink for textile printing includes, for example, the water in the case where the raw material contains water and the water to be added. When the water content is 30% by mass or more, the inkjet ink for textile printing can have a relatively low viscosity. The upper limit of the water content is preferably 90% by mass or less, more preferably 85% by mass or less, and further preferably 80% by mass or less, with respect to the total amount of the inkjet ink for textile printing.

1.2.2. Organic Solvent The inkjet ink for textile printing of the present embodiment may contain an organic solvent such as nitrogen-containing compound, alkyl polyol, glycol ether.

<Nitrogen-containing compounds>
Examples of the nitrogen-containing compound include ε-caprolactam [136 ° C.], N-methyl-2-pyrrolidone [204 ° C.], N-ethyl-2-pyrrolidone [212 ° C.], N-vinyl-2-pyrrolidone [193 ° C.]. , Nitrogen-containing heterocyclic compounds such as 2-pyrrolidone [245 ° C.] and 5-methyl-2-pyrrolidone [248 ° C.], urea, dimethylurea and the like. The numbers in parentheses represent standard boiling points. These nitrogen-containing compounds may be used alone or in combination of two or more. Such a nitrogen-containing compound can be expected to have an effect of easily dissolving the above-described dye and suppressing solidification and drying of the inkjet ink for textile printing.

  The total content in the case of using a nitrogen-containing compound is 1% by mass to 30% by mass, preferably 2% by mass to 20% by mass, more preferably 3% by mass to 15% by mass with respect to the total mass of the ink. % Or less, more preferably 4 mass% or more and 10 mass% or less.

<Alkyl polyol>
Specific examples of the alkyl polyol include 1,2-butanediol [194 ° C.], 1,2-pentanediol [210 ° C.], 1,2-hexanediol [224 ° C.], 1,2-heptanediol [227 ° C. 1,3-propanediol (propylene glycol) [210 ° C.], 1,3-butanediol [230 ° C.], 1,4-butanediol [230 ° C.], 1,5-pentanediol [242 ° C.], 1,6-hexanediol [250 ° C.], 2-ethyl-2-methyl-1,3-propanediol [226 ° C.], 2-methyl-2-propyl-1,3-propanediol [230 ° C.], 2 -Methyl-1,3-propanediol [214 ° C], 2,2-dimethyl-1,3-propanediol [210 ° C], 3-methyl-1,3-butanediol [2 3 ° C], 2-ethyl-1,3-hexanediol [244 ° C], 3-methyl-1,5-pentanediol [250 ° C], 2-methylpentane-2,4-diol [197 ° C], diethylene glycol [245 ° C.], dipropylene glycol [232 ° C.], triethylene glycol [287 ° C.], glycerin [290 ° C.] and the like. The numbers in parentheses represent standard boiling points. These alkyl polyols may be used alone or in combination of two or more.

  When the content of the alkyl polyol is 5% by mass or more with respect to the total mass of the inkjet ink for printing, the effect can be obtained, but it is preferably 5% by mass or more and 30% by mass or less. 8 mass% or more and 27 mass% or less is more preferable, and 10 mass% or more and 25 mass% or less is further more preferable.

<Glycol ether>
The glycol ether is preferably a monoalkyl ether of glycol selected from ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, and polyoxyethylene polyoxypropylene glycol. More preferable examples include methyl triglycol (triethylene glycol monomethyl ether), butyl triglycol (triethylene glycol monobutyl ether), butyl diglycol (diethylene glycol monobutyl ether), dipropylene glycol monopropyl ether, and the like. Typical examples include diethylene glycol. And monobutyl ether [230 ° C.]. The numbers in parentheses represent standard boiling points.

  A plurality of types of glycol ethers may be used in combination. The blending amount in the case of using glycol ether is 0.2% by mass or more and 30% by mass in total with respect to the total amount of the inkjet ink for printing, from the viewpoint of adjusting the viscosity of the inkjet ink for printing and preventing clogging due to the moisturizing effect. Hereinafter, it is preferably 0.4% by mass or more and 20% by mass or less, more preferably 1% by mass or more and 15% by mass or less, and further preferably 2% by mass or more and 10% by mass or less.

<Other organic solvents>
Furthermore, examples of the organic solvent that can be used in the inkjet ink for textile printing include lactones such as γ-butyrolactone, betaine compounds, and the like. When these organic solvents are used, the wettability and the penetration rate may be controlled, and thus the color developability of the image may be improved.

1.2.3. Surfactant The inkjet ink for textile printing according to this embodiment may contain a surfactant. The surfactant can be used to reduce the surface tension of the inkjet ink for textile printing and to adjust and improve the wettability with the fabric (penetration into the fabric). As the surfactant, any of a nonionic surfactant, an anionic surfactant, a cationic surfactant, and an amphoteric surfactant can be used, and these may be used in combination. Of the surfactants, acetylene glycol surfactants, silicone surfactants, and fluorine surfactants can be preferably used.

  Although it does not specifically limit as acetylene glycol type surfactant, For example, Surfynol 104,104E, 104H, 104A, 104BC, 104DPM, 104PA, 104PG-50,104S, 420,440,465,485, SE, SE- F, 504, 61, DF37, CT111, CT121, CT131, CT136, TG, GA, DF110D (all are trade names, manufactured by Air Products and Chemicals. Inc.), Olphin B, Y, P, A, STG, SPC , E1004, E1010, PD-001, PD-002W, PD-003, PD-004, PD-005, EXP. 4001, EXP. 4036, EXP. 4051, AF-103, AF-104, AK-02, SK-14, AE-3 (all trade names, manufactured by Nissin Chemical Industry), acetylenol E00, E00P, E40, E100 (all trade names, river Ken Fine Chemical Co., Ltd.).

  Although it does not specifically limit as a silicone type surfactant, A polysiloxane type compound is mentioned preferably. Although it does not specifically limit as the said polysiloxane type compound, For example, polyether modified organosiloxane is mentioned. Commercially available products of the polyether-modified organosiloxane include, for example, BYK-306, BYK-307, BYK-333, BYK-341, BYK-345, BYK-346, BYK-348 (above trade names, manufactured by BYK). KF-351A, KF-352A, KF-353, KF-354L, KF-355A, KF-615A, KF-945, KF-640, KF-642, KF-643, KF-6020, X-22-4515 , KF-6011, KF-6012, KF-6015, KF-6017 (above trade names, manufactured by Shin-Etsu Chemical Co., Ltd.).

  As the fluorine-based surfactant, a fluorine-modified polymer is preferably used, and specific examples thereof include BYK-340 (manufactured by BYK Japan).

  When a surfactant is blended in the inkjet ink for textile printing, a plurality of the above surfactants can be used, and the total amount of the surfactant is 0.01% by mass or more based on the entire inkjet ink for textile printing. Less than mass%, preferably 0.05 mass% or more and 2 mass% or less, more preferably 0.1 mass% or more and 1.5 mass% or less, particularly preferably 0.2 mass% or more and 1 mass% or less. preferable.

  Further, since the inkjet ink for textile printing contains a surfactant, the stability when ejecting the ink from the recording head tends to increase. In addition, the use of an appropriate amount of surfactant improves the permeability to the fabric, and for example, when the pretreatment composition is used, it may be possible to increase contact with the pretreatment composition.

1.2.4. Other Coloring Materials The inkjet ink for textile printing according to the present embodiment may include coloring materials other than the above-described DB 87 and DB 86 when used as a cyan ink, for example. Examples of such coloring materials include C.I. I. Acid Blue 1, 7, 9, 15, 22, 23, 25, 27, 29, 40, 41, 43, 45, 49, 54, 59, 60, 62, 72, 74, 78, 80, 82, 83, 87, 90, 92, 93, 100, 102, 103, 104, 112, 113, 1
14, 117, 120, 126, 127, 128, 129, 130, 131, 133, 138, 140, 142, 143, 151, 154, 156, 158, 161, 166, 167, 168, 170, 171, 175, 182, 183, 184, 185, 187, 192, 193, 201, 203, 204, 205, 207, 209, 220, 221, 224, 225, 229, 230, 239, 249, 258, 260, 264, 277: 1, 278, 279, 280, 284, 290, 296, 298, 300, 317, 324, 333, 335, 338, 342, 350, and the like, and C.I. I. Direct Blue 1, 15, 22, 25, 41, 76, 77, 80, 86, 87, 90, 98, 106, 108, 120, 158, 163, 168, 199, 200, 201, 202, 226, etc. Dyes. Even if the ink-jet ink for textile printing of this embodiment includes such a color material, if the value of “DB87: DB86” is 1: 2 to 5: 1, the blue color developability and fastness It is possible to print (print) an image having very good properties and good color tone on a fabric.

1.2.5. pH adjuster The inkjet ink for textile printing of this embodiment can add a pH adjuster for the purpose of adjusting pH. Although it does not specifically limit as a pH adjuster, The suitable combination of an acid, a base, a weak acid, and a weak base is mentioned. Examples of acids and bases used in such combinations include sulfuric acid, hydrochloric acid, nitric acid, etc. as inorganic acids, lithium hydroxide, sodium hydroxide, potassium hydroxide, potassium dihydrogen phosphate, dihydrogen phosphate as inorganic bases. Sodium, potassium carbonate, sodium carbonate, sodium hydrogen carbonate, ammonia and the like, and organic bases include triethanolamine, diethanolamine, monoethanolamine, tripropanolamine, triisopropanolamine, diisopropanolamine, trishydroxymethylaminomethane ( THAM) and the like, and as organic acids, adipic acid, citric acid, succinic acid, lactic acid, N, N-bis (2-hydroxyethyl) -2-aminoethanesulfonic acid (BES), 4- (2-hydroxy) Ethyl) -1-piperazine ethane Phosphonic acid (HEPES), morpholinoethanesulfonic acid (MES), carbamoylmethyliminobisacetic acid (ADA), piperazine-1,4-bis (2-ethanesulfonic acid) (PIPES), N- (2-acetamido) -2 -Good buffer such as aminoethanesulfonic acid (ACES), collamine hydrochloride, N-tris (hydroxymethyl) methyl-2-aminoethanesulfonic acid (TES), acetamidoglycine, tricine, glycinamide, bicine, phosphate buffer, A citrate buffer, a Tris buffer, or the like may be used. Furthermore, among these, as part or all of the pH adjuster, tertiary amines such as triethanolamine and triisopropanolamine, and carboxyl group-containing organic acids such as adipic acid, citric acid, succinic acid, and lactic acid, It is preferable that a pH buffering effect can be obtained more stably.

  When a pH adjuster is used in the inkjet ink for textile printing of the present embodiment, it is appropriately added while checking the pH. For example, the total amount of the inkjet ink for textile printing is 0.01% by mass or more 3 % By mass or less, preferably 0.1% by mass or more and 2% by mass or less, more preferably 0.2% by mass or more and 1% by mass or less.

1.2.6. Ureas Further, ureas may be used as a moisturizing agent for inkjet ink for textile printing or as a dyeing aid for improving dyeing property. Specific examples of ureas include urea, ethylene urea, tetramethyl urea, thiourea, 1,3-dimethyl-2-imidazolidinone and the like. When urea is contained, the content thereof can be 1% by mass or more and 10% by mass or less with respect to the total mass of the ink.

1.2.7. Saccharide An appropriate amount of saccharide may be used for the purpose of suppressing solidification and drying of the inkjet ink for textile printing. Specific examples of the saccharide include glucose, mannose, fructose, ribose, xylose, arabinose, galactose, aldonic acid, glucitol (sorbitol), maltose, cellobiose, lactose, sucrose, trehalose, and maltotriose.

1.2.8. Chelating agent An appropriate amount of a chelating agent may be used for the purpose of removing unnecessary ions in the inkjet ink for printing. Examples of the chelating agent include ethylenediaminetetraacetic acid and salts thereof (ethylenediaminetetraacetic acid dihydrogen disodium salt or ethylenediamine nitrilotriacetate, hexametaphosphate, pyrophosphate, or metaphosphate). It is done.

1.2.9. Preservatives and fungicides Ink-jet inks for textile printing may use preservatives and fungicides as appropriate. Examples of antiseptics and fungicides include sodium benzoate, sodium pentachlorophenol, sodium 2-pyridinethiol-1-oxide, sodium sorbate, sodium dehydroacetate, 1,2-dibenzoisothiazolin-3-one (Zeneca Proxel CRL, Proxel BDN, Proxel GXL, Proxel XL.2, Proxel TN, Proxel LV), 4-chloro-3-methylphenol (Bayer's Priventol CMK, etc.), and the like.

1.2.10. Others Further, as components other than those described above, for example, additives such as rust inhibitors, antioxidants, ultraviolet absorbers, oxygen absorbers, dissolution aids, and the like that can be usually used in inkjet inks may be contained.

1.3. PH of inkjet ink for textile printing
The ink for inkjet textile printing of this embodiment has a pH of 5.8 to 10.5, preferably 6.0 to 10.0, more preferably 6.0 to 9.5, and even more preferably 7.0. It is preferable that it is above 8.5. If the pH of the inkjet ink for textile printing is in this range, the storage stability of the dye in the ink is improved, and the color development and hue of the resulting image are less likely to change, so that the color of the predetermined design is reproduced well. be able to.

1.4. Production and Physical Properties of Textile Ink-Jet Ink The textile ink-jet ink according to this embodiment is obtained by mixing the above-described components in an arbitrary order, and removing impurities by filtration or the like as necessary. As a method for mixing the components, a method in which materials are sequentially added to a container equipped with a stirring device such as a mechanical stirrer or a magnetic stirrer and stirred and mixed is suitably used.

  The inkjet ink for textile printing according to this embodiment preferably has a surface tension of 20 to 40 mN / m at 20 ° C. from the viewpoint of the balance between the printing quality and the reliability as the inkjet ink. It is more preferable that From the same viewpoint, the viscosity of the ink at 20 ° C. is preferably 1.5 to 10 mPa · s, and more preferably 2 to 8 mPa · s. One method for setting the surface tension and the viscosity within the above ranges is to appropriately adjust the types of the organic solvent and the surfactant described above and the amount of water added thereto and the like.

1.5. Action Effect According to the inkjet ink for textile printing of the present embodiment, it is possible to print (print) an image having very good color development and fastness on a fabric. That is, the mass ratio of the color materials included is 1: 2.
As described above (that is, the mass ratio of CI DirectBlue 87 to CI DirectBlue 86 is 50% or more), the color saturation of the printed material is not too low, and bright and good color developability can be obtained. The sweat fastness is good. In addition, since the mass ratio of the color material contained is 5: 1 or less (that is, the mass ratio of CI DirectBlue 87 to CI DirectBlue 86 is 500% or less), the lightness of the printed material is not too high and good. Color development is obtained and the water fastness of the printed material is good.

2. Ink-jet ink set for textile printing The ink-jet ink for textile printing according to the above-described embodiment constitutes an ink set that is combined with an ink-jet ink for textile printing containing any other color dye and any number of compositions and any number of colors. be able to.

  For example, the textile printing inkjet ink set of the present embodiment can be a textile printing inkjet ink set including at least a cyan ink, a magenta ink, a yellow ink, and a black ink. Further, for example, the inkjet ink set for textile printing of the present embodiment may further include at least one of blue ink, orange ink, red ink, and brown ink.

  Of the inks included in these textile ink jet ink sets, the ink jet textile ink of the above-described embodiment is used for cyan ink.

  The magenta ink, yellow ink, black ink, blue ink, orange ink, red ink and brown ink are respectively the water, organic solvent and interface described above except that the color material is different from the above-described inkjet ink for printing (cyan ink). Other components such as an activator can be blended independently.

  Examples of the color material used for magenta ink include C.I. I. Acid Red 52, C.I. I. Acid Red 138 and C.I. I. There is at least one of AcidRed 289.

  Examples of color materials used for yellow ink include C.I. I. Acid Yellow 79, C.I. I. Acid Yellow 110 and C.I. I. There is at least one of Acid Yellow 184.

  Examples of the color material used for the black ink include C.I. I. AcidBlack 52: 1, C.I. I. AcidBlack 172 and C.I. I. There is at least one of AcidBlack194.

  Examples of the color material used for the blue ink include C.I. I. AcidBlue 112, C.I. I. AcidBlue 140 and C.I. I. At least one of AcidBlue 193 is included.

  Examples of the color material used for the orange ink include C.I. I. Acid Orange 33 and C.I. I. At least one of Acid Orange 56 is mentioned.

  Examples of the color material used for the red ink include C.I. I. Acid Orange 94 and C.I. I. There is at least one of AcidRed249.

  Examples of the color material used for the brown ink include C.I. I. Acid Brown 298 etc. are mentioned.

  According to such an inkjet ink set for textile printing, the compatibility between the color materials is good, and when printing is performed by combining two or more colors, the fastness of the printed image is extremely high regardless of which combination is selected. Can be good. Also, according to such an inkjet ink set for textile printing, the compatibility between the color materials is good, and when printing is performed by combining two or more colors, the fastness of the printed image is selected no matter what combination is selected. Can be made extremely good.

In the present invention, various dyes such as acid dyes and reactive dyes can be used as the dye as the coloring material, but among these dyes, acid dyes can be preferably used. Examples of acid dyes include C.I. I. Acid Yellow 1, 3, 7, 11, 17, 19, 23, 25, 29, 36, 38, 40, 42, 44, 49, 59, 61, 70, 72, 75, 76, 78, 79, 98, 99, 110, 111, 112, 114, 116, 118, 119, 127, 128, 131, 135, 141, 142, 161, 162, 163, 164, 165, 169, 184, 207, 219, 246, C.I. I. Acid Red 1, 6, 8, 9, 13, 14, 18, 19, 24, 26, 27, 28, 32, 35, 37, 42, 51, 52, 57, 62, 75, 77, 80, 82, 83, 85, 87, 88, 89, 92, 94, 95, 97, 106, 111, 114, 115, 117, 118, 119, 129, 130, 131, 133, 134, 138, 143, 145, 149, 154, 155, 158, 168, 180, 183, 184, 186, 194, 198, 199, 209, 211, 215, 216, 217, 219, 249, 252, 254, 256, 257, 260, 262, 265, 266, 274, 276, 282, 283, 289, 303, 317, 318, 320, 321, 322, 361, C.I. I. Acid Blue 1, 7, 9, 15, 22, 23, 25, 27, 29, 40, 41, 43, 45, 49, 54, 59, 60, 62, 72, 74, 78, 80, 82, 83, 87, 90, 92, 93, 100, 102, 103, 104, 112, 113, 114, 117, 120, 126, 127, 128, 129, 130, 131, 133, 138, 140, 142, 143, 151, 154, 156, 158, 161, 166, 167, 168, 170, 171, 175, 182, 183, 184, 185, 187, 192, 193, 201, 203, 204, 205, 207, 209, 220, 221, 224, 225, 229, 230, 239, 249, 258, 260, 264, 277: 1, 278, 279, 280, 284, 290 296,298,300,317,324,333,335,338,342,350, C. I. Acid Black 1, 2, 7, 24, 26, 29, 31, 44, 48, 50, 51, 52, 52: 1, 58, 60, 62, 63, 64, 67, 72, 76, 77, 94, 107, 108, 109, 110, 112, 115, 118, 119, 121, 122, 131, 132, 139, 140, 155, 156, 157, 158, 159, 172, 191, 194, 234, C.I. I. Acid Orange 1, 7, 8, 10, 19, 20, 24, 28, 33, 41, 43, 45, 51, 56, 63, 64, 65, 67, 74, 80, 82, 85, 86, 87, 88, 94, 95, 122, 123, 124, C.I. I. Acid Violet 7, 11, 15, 31, 34, 35, 41, 43, 47, 48, 49, 51, 54, 66, 68, 75, 78, 97, 106, C.I. I. Acid Green 3, 7, 9, 12, 16, 19, 20, 25, 27, 28, 35, 36, 40, 41, 43, 44, 48, 56, 57, 60, 61, 65, 73, 75, 76, 78, 79, C.I. I. Acid Brown 2, 4, 13, 14, 19, 20, 27, 28, 30, 31, 39, 44, 45, 46, 48, 53, 100, 101, 103, 104, 106, 160, 161, 165, 188, 224, 225, 226, 231, 232, 236, 247, 256, 257, 266, 268, 276, 277, 282, 289, 294, 295, 296, 297, 298, 299, 300, 301, 302, etc. Is mentioned.
3. Inkjet Textile Printing Method The inkjet textile printing method according to the present embodiment sequentially performs at least the following three processes A, B, and C using the above-described textile printing inkjet ink or the above-described textile printing inkjet ink set. is there.

Step A: Step of attaching any ink to the fabric Step B: Step of applying at least one of heat and steam to the fabric obtained in Step A Step C: Step of washing the fabric obtained in Step B.

3.1. Recording Medium Each color ink contained in the inkjet ink for textile printing and the inkjet ink set for textile printing is used by adhering to the recording medium. Although it does not specifically limit as a recording medium, Various fabrics are mentioned. The material constituting the fabric is not particularly limited. For example, natural fibers such as cotton, hemp, wool, and silk; synthetic fibers such as polypropylene, polyester, acetate, triacetate, polyamide, and polyurethane; and biodegradable materials such as polylactic acid. Examples thereof include fibers, and these blended fibers may be used. As the fabric, the above-described fibers may be any form such as a woven fabric, a knitted fabric, and a non-woven fabric. Of these, the fabric used in the present embodiment is more preferably a fabric containing polyamide fibers. By using such a fabric, it is possible to obtain better dyeing properties of the inkjet ink for textile printing.

3.2. Process A (ink adhesion process)
The ink jet textile printing method according to the present embodiment includes a process A in which any one of the inks is attached to a fabric using the above ink jet ink for textile printing or the above ink jet ink set for textile printing. Process A may be rephrased as an ink adhesion process.

  Specifically, one of the ink droplets ejected by the ink jet recording method is attached to the fabric to form an image on the fabric. Any method may be used as the ink jet recording method, and examples thereof include a charge deflection method, a continuous method, and an ondenmand method (piezo method, bubble jet (registered trademark) method). Among these ink jet recording methods, a method using a piezoelectric ink jet recording apparatus is particularly preferable.

3.3. Process B (heat treatment process)
The inkjet textile printing method according to the present embodiment includes a process B in which at least one of heat and steam is applied to the fabric obtained in the process A. Step B may be rephrased as a heat treatment step.

  Specifically, in the process B, the fabric printed with the ink is heat-treated. By performing Step B (heat treatment step), the color material (dye) in the ink is dyed on the fibers of the fabric. A conventionally known method can be used for the heat treatment step, and examples thereof include the HT method (high temperature steaming method), the HP method (high pressure steaming method), the thermosol method, the heat press method, and the thermofix method.

  The temperature in step B (heat treatment step) (the temperature reached by the fabric) is preferably performed in the range of 90 ° C. or higher and 110 ° C. or lower from the viewpoint of reducing damage to the fabric.

3.4. Process C (cleaning process)
The ink jet printing method according to the present embodiment may include a cleaning process for cleaning the printed material. The washing step is performed after the above heat treatment step so as to remove the dye not dyed on the fiber. The washing step can be performed using, for example, water or hot water, and may be performed a plurality of times or a soaping process may be performed as necessary.

3.5. Other Steps The inkjet textile printing method according to the present embodiment may include a pretreatment step of applying a pretreatment composition containing at least one of an alkali agent and a hydrotropic agent to the fabric as necessary. Thereby, the dyeing | staining property of dye may improve further.

  Examples of the method for applying the pretreatment composition to the fabric include a method of immersing the fabric in the pretreatment composition, a method of applying the pretreatment composition with a roll coater, and a method of spraying the pretreatment composition (for example, Any of these methods can be used.

  The textile printing method according to the present embodiment may include a pretreatment composition drying step of drying the pretreatment composition applied to the fabric after the above pretreatment step and before the above ink adhesion step. Good. Although drying of a pretreatment composition may be performed by natural drying, it is preferable that it is drying with a heating from a viewpoint of an improvement of a drying rate. When heating is performed in the drying step of the pretreatment composition, the heating method is not particularly limited, and examples thereof include a heat press method, a normal pressure steam method, a high pressure steam method, and a thermofix method. Moreover, as a heat source of heating, although not limited to the following, infrared (lamp) is mentioned, for example.

3.6. Effects According to the ink jet printing method of the present embodiment, it is possible to print (print) an image having very good color developability and fastness. That is, the mass ratio of the color material contained in the inkjet ink for textile printing or the cyan ink of the inkjet ink set for textile printing is 1: 2 or more (that is, the mass ratio of CI DirectBlue 87 to CI DirectBlue 86 is 50%. Therefore, at least in cyan images, the color saturation of the printed material is not too low, and a bright and good color developability is obtained, and the sweat fastness of the printed material is good. In addition, since the mass ratio of the color material contained is 5: 1 or less (that is, the mass ratio of CI DirectBlue 87 to CI DirectBlue 86 is 500% or less), the lightness of the printed material is not too high and good. Color development is obtained and the water fastness of the printed material is good.

  In the inkjet textile printing method according to the present invention, the fabric may be a fabric containing polyamide fibers. According to such an ink-jet printing method, it is possible to print (print) a fabric with a particularly good color development and fastness.

4). Examples and Comparative Examples Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to these examples.

4.1. Examples of ink-jet inks for textile printing and comparative examples 4.1.1. Preparation of inkjet ink for textile printing Each component was put into a container so as to have the composition shown in Table 1, mixed and stirred for 2 hours with a magnetic stirrer, and then filtered with a membrane filter having a pore size of 5 μm. Inkjet ink for printing (cyan ink) according to the above was obtained. The inks in each example had the same composition except that the types of color materials (dyes) were different from each other. Moreover, the numerical value in Table 1 shows the mass%.

  In the table, Olfine E1010 is an acetylene glycol surfactant manufactured by Nissin Chemical Industry.

4.1.2. Evaluation method of inkjet ink for textile printing <Creation of printing fabric>
The following pretreatment liquid was applied to a nylon 6 taffeta cloth of 70 g / m ² , drawn with a mangle at a pickup rate of 20%, and dried to prepare an evaluation cloth.

<Pretreatment liquid>
Sodium alginate 1.0% by mass
Guam gum 1.0% by mass
Ammonium sulfate 4.0% by mass
Urea 10.0% by mass
Remaining amount of water <Making stamps>
Each cyan ink was filled into a cyan row of Monna Lisa 180 T16 (Robustelli), and 540 × 720 dpi. In the 8 pass printing mode, solid printing was performed on the above-described printing fabric so that the coating amount per unit area of the fabric was 1.2 mg / cm ² .

  After printing, a steamer (manufactured by Matisse; Steamer DHe type) was used to perform a steam treatment at 100 ° C. for 30 minutes, and the obtained printed matter was washed with water to remove undyed dye. Further, it was washed with hot water at 55 ° C. for 10 minutes and then dried to obtain printed products of Examples and Comparative Examples.

<Color development test>
Using a spectral densitometer FD-7 (manufactured by Konica Minolta), conditions: [density status: DIN (DIN 16536), density illumination: M2 (A light source + UV cut), observation light source: D65, viewing angle: 2 degrees] The density (OD value: Optical Density) of the printed material was measured. The color developability was evaluated according to the following criteria based on the OD value, and the results are shown in Table 1. In addition, the following A or B is an allowable range.
A: OD value is 1.55 or more B: OD value is 1.50 or more and less than 1.55 C: OD value is 1.45 or more and less than 1.50 D: OD value is less than 1.45

<Robustness test>
Results of (1) sweat fastness test (according to ISO 105-E04) and (2) water fastness test (according to ISO 105-E01), and evaluation based on the following criteria for the obtained printed matter Is shown in Table 1. The sweat fastness test was conducted using alkaline artificial sweat. In all tests, the attached white cloth used a cotton cloth (described in ISO 105-F02), and the contamination (transfer) was observed. In addition, the following A, B, or C is an allowable range.
The lowest evaluation result in the ink set
A: 4/5 grade or higher B: 3/4 grade or 4 grade C: grade 3 D: grade 2 or 2/3 grade E: 1/2 grade or less.

4.2. Examples of ink-jet ink sets for textile printing and comparative examples 4.2.1. Preparation of ink of each color Each component was put into a container so as to have the composition shown in Table 2, mixed and stirred with a magnetic stirrer for 2 hours, and then filtered with a membrane filter having a pore size of 5 μm, thereby printing inkjet ink for each color. Got. In addition, the numerical value in Table 2 shows the mass%. In the table, “M” represents magenta ink, “Y” represents yellow ink, and “BK” represents black ink, and four types of ink were created for each color.

4.2.2. Evaluation method of inkjet ink set for printing (4-color set) <Creation of printed material>
According to the combinations of Examples B1 to B13 and Comparative Example B1 described in Table 3, inks of colors corresponding to the cyan, magenta, yellow, and black columns of Monna Lisa 180 T16 (Robustelli) (Table 1) And Table 2). Using this, in the same manner as described in “4.1.2. Evaluation method of inkjet ink for textile printing”, each ink was applied to the same fabric surface at a coating amount of 1.2 mg / cm. Solid printing was performed to obtain ² .

After printing, a steamer (manufactured by Matisse; Steamer DHe type) was used to perform a steam treatment at 100 ° C. for 30 minutes, and the obtained printed matter was washed with water to remove undyed dye. 5 more
It was washed with hot water at 5 ° C. for 10 minutes and then dried to obtain printed materials of Examples B1 to B13 and Comparative Example B1.

<Robustness test>
In the same manner as described in “4.1.2. Evaluation method of inkjet ink for textile printing”, a sweat fastness test and a water fastness test were performed using the obtained printed matter. Table 3 shows the results of evaluating the ink fastness to sweat and water fastness according to the following criteria. In addition, the following A, B, or C is an allowable range.
The lowest evaluation result in the ink set
A: 4/5 grade or higher B: 3/4 grade or 4 grade C: grade 3 D: grade 2 or 2/3 grade E: 1/2 grade or less.

4.2.3. Evaluation method for inkjet ink set for printing (8 color set) Evaluate 8 color ink set by adding blue ink, orange ink, red ink and brown ink to cyan ink, magenta ink, yellow ink and black ink. Went.

4.2.4. Preparation of ink of each color Each component is put in a container so as to have the composition shown in Table 4, mixed and stirred with a magnetic stirrer for 2 hours, and then filtered with a membrane filter having a pore size of 5 μm, thereby printing inkjet ink of each color. Got. In addition, the numerical value in Table 4 shows the mass%. In the table, “BL” means blue ink, “OR” means orange ink, “R” means red ink, and “BR” means brown ink, and 2 to 4 types of ink were prepared for each color.

＜印捺物の作成＞
表５に記載の実施例Ｃ１〜Ｃ２１、比較例Ｃ１の組み合わせに従い、Ｍｏｎｎａ Ｌｉｓａ １８０ Ｔ１６（Ｒｏｂｕｓｔｅｌｌｉ社製）の、シアン列、マゼンタ列、イエロー列、ブラック列、ブルー列、オレンジ列、レッド列に、それぞれ該当する色のインクを充填し、またグレー列に、ブラウンインクを充填した。これを用いて、「４．１．２．捺染用インクジェットインクの評価方法」で述べたと同様の方法で、各インクを、同一布帛面に、それぞれ単位面積当たりの塗布量が１．２ｍｇ／ｃｍ^２になるように、ベタ印刷を行った。

<Creating stamps>
According to the combination of Examples C1 to C21 and Comparative Example C1 described in Table 5, Mona Lisa 180 T16 (Robustelli), cyan column, magenta column, yellow column, black column, blue column, orange column, red column Each was filled with ink of the corresponding color, and the gray ink was filled with brown ink. Using this, in the same manner as described in “4.1.2. Evaluation method of inkjet ink for textile printing”, each ink was applied to the same fabric surface at a coating amount of 1.2 mg / cm. Solid printing was performed to obtain ² .

  After printing, a steamer (manufactured by Matisse; Steamer DHe type) was used to perform a steam treatment at 100 ° C. for 30 minutes, and the obtained printed matter was washed with water to remove undyed dye. Further, it was washed with hot water at 55 ° C. for 10 minutes and then dried to obtain printed materials of Examples C1 to C21 and Comparative Example C1.

＜堅牢性試験＞
「４．１．２．捺染用インクジェットインクの評価方法」で述べたと同様に、得られた印捺物を用いて、汗堅牢性試験と水堅牢性試験を実施した。結果を表５に記した。

<Robustness test>
In the same manner as described in “4.1.2. Evaluation method of inkjet ink for textile printing”, a sweat fastness test and a water fastness test were performed using the obtained printed matter. The results are shown in Table 5.

4.3. Evaluation results Looking at Table 1, C.I. I. DirectBlue 87 and C.I. I. DirectBlue 86, the mass ratio of its content, C.I. I. DirectBlue 87: C.I. I. It was found that the inkjet inks for printing of Examples A1 to A3, each having a DirectBlue 86 of 1: 2 to 5: 1, can form an image having high color developability and high fastness (both water and sweat). . In contrast, the inkjet ink for textile printing of Comparative Example A1 with an excessive DB86 has insufficient color developability and sweat fastness, and the inkjet ink for textile printing of Comparative Example A3 with an excessive DB87 and Comparative Example A3 with only DB87. Water fastness was insufficient. Further, in Comparative Example A4 in which DB87 and DB86 were not used, sufficient color developability was not obtained.

  Table 3 shows that the cyan ink is the inkjet ink for textile printing of Examples A1 to A3, and the magenta ink is C.I. I. Acid Red 52, C.I. I. Acid Red 138 or C.I. I. AcidRed 289, and yellow ink is used as the color material C.I. I. Acid Yellow 79, C.I. I. Acid Yellow 110 or C.I. I. Acid Yellow 184, and black ink is C.I. I. AcidBlack 52: 1, C.I. I. AcidBlack 172 or C.I. I. In Examples B1 to B10, which are inkjet ink sets for textile printing including AcidBlack 194, it was found that images with very good fastness in both sweat and water were obtained.

  In contrast, the ink set of Comparative Example B1 in which the textile printing inkjet inks of Examples A1 to A3 were not selected as the cyan ink resulted in poor water fastness. Further, while the embodiment A2 is selected as the cyan ink, the magenta ink is C.I. I. Acid Red 52, C.I. I. Acid Red 138 or C.I. I. AcidRed 289 is not included, or yellow ink is C.I. I. Acid Yellow 79, C.I. I. Acid Yellow 110 or C.I. I. Acid Yellow 184 is not included, or the black ink is C.I. I. AcidBlack 52: 1, C.I. I. AcidBlack 172 or C.I. I. The ink set of Examples B11 to B13 that does not include AcidBlack 194 is slightly inferior in performance as compared to Examples B1 to B10 that use suitable color materials in all inks, but is a comparative example that does not use the cyan ink of the present invention. An image showing better fastness than B1 was obtained.

  Further, as shown in Table 5, the cyan ink is the inkjet ink for textile printing of any of Examples A1 to A3, and the magenta ink is C.I. I. Acid Red 52, C.I. I. Acid Red 138 or C.I. I. Acid Red 289, and yellow ink is C.I. I. Acid Yellow 79, C.I. I. Acid Yellow 110 or C.I. I. Acid Yellow 184 and the black ink is C.I. I. AcidBlack 52: 1, C.I. I. AcidBlack 172 or C.I. I. Acid Black 194 and the blue ink is C.I. I. AcidBlue 112, C.I. I. AcidBlue 140 or C.I. I. Acid Blue 193, and orange ink is C.I. I. Acid Orange 33 or C.I. I. Acid Orange 56 and red ink is C.I. I. Acid Orange 94 and C.I. I. Acid Red 249, and brown ink is C.I. I. It was found that the ink sets of Examples C1 to C21 containing AcidBrown 298 can obtain images with very good fastness in both sweat and water.

  The present invention is not limited to the above-described embodiments, and various modifications can be made. For example, the present invention includes substantially the same configuration (for example, a configuration having the same function, method and result, or a configuration having the same purpose and effect) as the configuration described in the embodiment. In addition, the invention includes a configuration in which a non-essential part of the configuration described in the embodiment is replaced. In addition, the present invention includes a configuration that exhibits the same operational effects as the configuration described in the embodiment or a configuration that can achieve the same object. In addition, the invention includes a configuration in which a known technique is added to the configuration described in the embodiment.

Claims (7)

An inkjet ink for textile printing used for textile printing,
C. I. DirectBlue 87 and C.I. I. DirectBlue 86, the mass ratio of its content, C.I. I. DirectBlue 87: C.I. I. Ink-jet ink for textile printing in which DirectBlue 86 is 1: 2 to 5: 1. In claim 1,
An inkjet ink for textile printing, wherein the fabric is a fabric containing polyamide fibers. An inkjet ink set for textile printing comprising at least cyan ink, magenta ink, yellow ink and black ink,
The cyan ink is the inkjet ink for textile printing according to claim 1 or 2,
The magenta ink is C.I. I. Acid Red 52, C.I. I. Acid Red 138 and C.I. I. Including at least one of AcidRed 289,
The yellow ink is C.I. I. Acid Yellow 79, C.I. I. Acid Yellow 110 and C.I. I. Including at least one of Acid Yellow 184,
The black ink is C.I. I. AcidBlack 52: 1, C.I. I. AcidBlack 172 and C.I. I. An inkjet ink set for textile printing, comprising at least one of AcidBlack194. In claim 3,
Furthermore, including at least one of blue ink, orange ink, red ink and brown ink,
The blue ink is C.I. I. AcidBlue 112, C.I. I. AcidBlue 140 and C.I. I. Including at least one of AcidBlue 193,
The orange ink is C.I. I. Acid Orange 33 and C.I. I. Including at least one of Acid Orange 56,
The red ink is C.I. I. Acid Orange 94 and C.I. I. Including at least one of AcidRed 249,
The brown ink is C.I. I. An inkjet ink set for textile printing comprising Acid Brown 298. In claim 3 or claim 4,
An inkjet ink set for textile printing, wherein the fabric is a fabric containing polyamide fibers. Using the inkjet ink for textile printing according to claim 1 or claim 2 or the inkjet ink set for textile printing according to claim 3 or claim 4, at least the following three steps A, B and C are sequentially performed. An inkjet printing method to be performed.
Step A: Step of attaching any ink to the fabric Step B: Step of applying at least one of heat and steam to the fabric obtained in Step A Step C: Step of washing the fabric obtained in Step B In claim 6,
An inkjet printing method, wherein the fabric is a fabric containing polyamide fibers.