JPS62283175A - Ink composition for ink jet and ink jet printing method using said ink - Google Patents

Abstract

PURPOSE:The titled ink, obtained by blending a reactive disperse dye with an organic solvent unreactive with the above-mentioned dye and water, capable of giving precise and stable prints, having improved dye fixing ratio as well as color fastness to washing and suitable for printing fabrics. CONSTITUTION:An ink obtained by blending (A) a reactive disperse dye, preferably a compound expressed by the formula, etc., is blended with (B) water and (C) an ink solvent consisting essentially of an organic solvent, e.g., DMF, etc., unreactive with the component (A). The respective components are preferably used to give 0.1-15wt% content of the component (A) in the ink and 1-70wt% content of the component (C) in the ink solvent. The above-mentioned ink is preferably adjusted to 30-60dyn/cm surface tension from the viewpoint of discharge stability through nozzles, etc., After sticking the above-mentioned ink to a fabric by an ink jet method, dyeing treatment is preferably carried out.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an inkjet ink, particularly a fabric (!i
The present invention relates to an inkjet ink suitable for printing (cloth or nonwoven fabric) and an inkjet printing method using the same.

(Prior Art) Traditionally, printing methods such as roller printing, screen printing, and transfer printing have been used as printing methods for fabrics (woven fabrics and nonwoven fabrics), and some printing methods using inkjet methods have also been proposed. (Refer to Japanese Patent Application Laid-open No. 59108/1983).

(The problem that the invention is trying to solve) However,
Conventional general textile printing methods require the creation of printing plates for textile printing, and the creation of these plates, such as printing platetones and screen plates, is expensive, and transfer paper is also required for printing in transfer printing. Because it is expensive to create plates for
The cost is not worth it unless you produce it in large quantities. In addition, since the fashion period of printed cloth patterns is generally short, making plates each time increases the cost, and there is a serious problem that it is not possible to respond quickly to trends, and a large amount of inventory may be required.

In order to solve these drawbacks, an inkjet printing method was proposed, but in this inkjet printing method, the viscosity of the ink used cannot be made very high due to the nature of the printer, and the woven fabric cannot be used for paper etc. In comparison, since the weave is coarse, there is a problem of inkjet ink adhering to the woven fabric surface bleeding, making it difficult to create fine patterns. Furthermore, since ink is ejected from fine nozzles at high speed and at high frequency, there are drawbacks such as unstable ejection and limited response to frequency depending on the physical properties of the ink.

Furthermore, printed articles formed using conventional inkjet inks, especially when reactive dispersion dyes are used, have a low dye dyeing rate and also have low washing fastness.

Therefore, the object of the present invention is to solve the economical problems in the conventional general textile printing method as described above and the various problems in the inkjet printing method, especially the problem of accurate and stable printing, and the dye fixation rate of the printed material. An object of the present invention is to provide an inkjet ink and an inkjet textile printing method using the inkjet ink that can solve the problems of washing fastness and washing fastness at the same time.

These objects and other objects of the present invention are achieved by the present invention as described below.

(Disclosure of the Invention) That is, the present invention consists of three inventions, the first of which is a method comprising a reaction-dispersion dye, a solvent mainly consisting of an organic solvent that is non-reactive with water and the reaction-dispersion dye. The second invention is an inkjet ink having the main composition as
In an inkjet textile printing method in which a printing ink is applied by an inkjet method to a fabric containing fibers that can be dyed with a reaction-dispersion dye, the printing ink contains a reaction-dispersion dye, water, and a dye that is non-resistant to the reaction-dispersion dye. The third invention is an inkjet textile printing method characterized by using an ink whose main composition is a solvent mainly composed of a reactive organic solvent, and the third invention is a method for printing fabrics containing fibers that can be dyed with reactive dispersion dyes. In an inkjet textile printing method in which a textile printing ink is applied by an inkjet method and then dyed, the textile printing ink is mainly composed of a reactive dispersion dye, water and an organic solvent non-reactive with respect to the reactive dispersion dye. This is an inkjet textile printing method characterized by using an ink containing a solvent as a main component.

To explain the present invention in more detail, the main feature of the ink of the present invention is that, as an organic solvent constituting the liquid medium of the ink containing the reactively dispersed dye, an organic solvent that is non-reactive with the reactively dispersed dye is used. It is at the point where you selected.

That is, as a result of extensive research on textile printing using the inkjet method, the present inventor adopted reactive dispersion dyes as dyes in textile printing inks for the inkjet method, and also used a variety of dyes that are widely used as part of the liquid medium of the ink. Although excellent printing can be achieved by using organic solvents such as alcohol, new problems arise in that the dye fixation rate is low and the washing fastness of the resulting prints is also reduced for some reason. It can be assumed that the decrease in fixation rate occurs because part of the dye reacts with polyhydric alcohol and the like during storage of the ink, preventing the dye from reacting with the fibers.

In addition, the decrease in washing fastness is caused by the fact that the water in the ink attached to the fabric quickly evaporates, but the polyhydric alcohol, etc. does not evaporate quickly and remains on the fabric. It is presumed that the dye reacts with some reactive dispersed dyes during heating or alkali treatment, and this reactant easily falls off during washing, resulting in a decrease in washing fastness.

For the above reasons, the present invention solves the above problem by selectively using an organic solvent that does not react with the reactive dispersion dye as the organic solvent used in the ink.

Examples of the reactive dispersion dye used in the present invention include poorly water-soluble azo, anthraquinone, and other dyes that are used in some conventional printing methods for polyester/cotton blend fabrics.

These reactive disperse dyes generally have a molecular structure similar to that of disperse dyes, and contain groups that can react with the hydroxyl groups or amine groups of fibers to form covalent bonds with the fibers, such as ethyleneimine groups and aziF groups. , sulfone ethyleneimide group, dichlorotriazine group, monochlorotriazine group, trichloropyrimidine group, monochlorodifluoropyrimidine group,
Chlorbenzothiazole group, dichloropyridazone group, dichloropyridazine group, dichloroquinoxaline group, epoxy group, 3-carboxypyridiniotriazine group, -SO□ to 1+2 (:H2O5O3H, -5o□NHC
IhC11zO5OJ.

-N11CO to II□CH20S03tl, -COC
l12CII□02, -Nl+C0C)l-[:11.
, -5Qz(:H=CH2゜-(:1IzNIICOC
Cfl=C112, -NHCO(:Br=CI+2,
-N)l 0C112C1, -NIICH20H.

-PO, Hl-502 to H2(:11□0GO(:H,
, -5O7G112[:1120(:(Ic411s, etc.).

In the present invention, any of these reactively dispersed dyes can be used, and preferred reactively dispersed dyes in the present invention include dyes having the following structures and derivatives thereof.

In the present invention, the liquid medium for dissolving or dispersing the above-mentioned reactive dispersion dye is a liquid medium used in conventional general dyeing, a liquid medium used in a conventional inkjet ink, especially water and an organic solvent. It consists of
As the organic solvent to be mixed with water, it is necessary to use an organic solvent that does not have active hydrogen, such as a hydroxyl group or an amino group, that reacts with the reactively dispersed dye.

Examples of such organic solvents include: Amides such as dimethylformamide and dimethylacetamide; Ketones such as acetone and methyl ethyl ketone; Ethers such as tetrahydrofuran and dioxane: N-methyl-2-pyrrolidone and 1,3-dimethyl- Examples include 2-imidazolidinone, and particularly preferred organic solvents include dialkyl (1 to 15 moles added) of polyoxyethylene.
1 to 4 carbon atoms) ether, polyoxyethylene/oxypropylene block (or random) copolymer (
Examples include dialkyl (1 to 4 carbon atoms) ethers having an addition mole of 1 to 15.

Such organic solvents can be used alone or as a mixture, and it is preferable to use such organic solvents in an amount of about 1 to 70% by weight in the ink solvent. Further, the amount of the ink solvent used is preferably such that when the ink is prepared, the content of the reactive dispersion type dye is about 0.1 to 15% by weight.

The essential components of the ink of the present invention are as described above, but various other dispersants, surfactants, viscosity modifiers, other types of dyes, etc. can be added as necessary. Of course, it is preferable to select and use these additives that do not react with the reactive disperse dye, but if the amount used is very small,
Even if it is reactive, there is virtually no problem.

Dispersants or surfactants that can be added as necessary include fatty acid salts, alkyl sulfate ester salts, alkylbenzene sulfonates, alkylnaphthalene sulfonates, dialkyl sulfosuccinates, alkyl phosphate ester salts, naphthalene sulfonate formalin. Anionic dispersants or surfactants such as condensates and polyoxyethylene alkyl sulfate salts: polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester , polyoxyethylene alkylamine, glycerin fatty acid ester, oxyethylene oxybrobylene block copolymer, and other nonionic dispersants or surfactants are important.

As the viscosity modifier, mainly water-soluble natural or synthetic polymers such as carboxymethyl cellulose, sodium polyacrylate, polyvinylpyrrolidone, gum arabic, and starch are preferred, and these viscosity modifiers are used or used. The viscosity of the ink of the present invention was adjusted to 25°C without
50 cps or less, preferably 1 to 15 cps.

Further, in order to prepare ink used in an inkjet system that charges the ink, resistivity adjusters such as inorganic salts such as lithium chloride, ammonium chloride, and sodium chloride are added.

Note that when applied to an inkjet system in which ink is ejected by the action of thermal energy, thermal physical property values (eg, specific heat, coefficient of thermal expansion, thermal conductivity, etc.) may be adjusted.

In addition, additives other than the above three types may be used as necessary.
For example, antifoaming agents, penetrants, antifungal agents, pH adjusters, etc. can be added as appropriate.

The inkjet ink of the present invention is generally obtained by mixing the above-mentioned essential components and optional components and subjecting the mixture to a grinding process using conventionally known grinding means such as a ball mill, sand mill, speed line mill, etc. Yes, the particle size of the reactive dispersion dye is usually 30 μm or less, preferably 20 μm or less.
It should be less than μm. If the particle size is too large, problems such as nozzle clogging will occur during inkjet recording, and problems will occur with level dyeing in the subsequent dyeing process. In addition, when selecting a medium that dissolves the reactive dispersion dye,
The ink composition of the present invention can be obtained by a simple dissolving action such as heating.

The inkjet ink of the present invention is obtained as described above, and when the above-mentioned essential components and optional components are blended, the surface tension of the obtained ink is adjusted to about 30 to 60 dyne/
It is also preferable to adjust to a range of cm. Such adjustment of surface tension can be easily achieved by those skilled in the art by selecting a reactively dispersed dye, selecting and combining a liquid medium, and adding various additives. If the inkjet ink of the present invention has a surface tension of 30 dyne/cm or less, the ink adhering to the woven or nonwoven fabric made of various fibers will excessively bleed on the surface, resulting in fine patterns being formed. If the formation becomes difficult and the surface tension exceeds the upper limit of the above range, problems arise such as it becomes difficult to obtain a stable and uniform drop left during ink ejection. In addition, the above surface tension values are KYOWA (:BVP SURF
This is a value measured at 25° C. using AGETENSIOMETERA-1 (trade name, manufactured by Toa Denpa Kogyo).

The above inkjet ink of the present invention is useful for printing fabrics (woven fabrics or nonwoven fabrics) by the inkjet method, and is particularly useful for printing fibers such as cotton, linen, viscose, wool, silk, and nylon, polyester fibers, and acetate fibers. It is useful for printing mixed woven fabrics or blended nonwoven fabrics made of synthetic fibers such as fibers, polypropylene fibers, and vinylon fibers.

These woven or nonwoven fabrics may be pretreated for inkjet printing. Such pretreatment can be carried out by applying a water-soluble or water-dispersible polymer or the like that can quickly absorb and retain ink applied to the surface of the fibers constituting the woven or nonwoven fabric.

The inkjet method used to apply the inkjet ink of the present invention to the above-mentioned woven or nonwoven fabric is a method that can effectively remove the ink from a nozzle and apply it to the woven or nonwoven fabric that is the projectile. If there is, any method may be used, and a representative example of such method is, for example, the IEEE Trans Actions on Industry Applications (IEEE T
ransac-Lions on Industry
Vol. J8-13, No. l (February and March 1977 issues) and Nikkei Electronics January 29, 1973 issue, 197
Published in the April 6, 1982 issue and the December 5, 1982 issue.

The methods described above are suitable for use with the inkjet ink of the present invention.To explain some of them, there is an electrostatic suction method. A strong electric field is applied between the nozzle and the accelerating electrode, and the ink is turned into particles and drawn out one after another from the nozzle. Information (
There are two methods: a method in which recording is performed by applying No. 3 to a deflection electrode, and a method in which ink particles are ejected in response to an information signal without deflecting the ink particles, both of which are effective in applying the inkjet ink of the present invention. be.

The second method is to apply high pressure to the ink using a bio-type pump and mechanically vibrate the nozzle with a crystal oscillator, etc., to forcibly eject microscopic ink particles. Simultaneously with the injection, the fuel is charged in accordance with the information signal. When the -71F charged ink particles pass between the deflection electrode plates, they are deflected according to the amount of charge.

Another method using this method is called the microdot inkjet method, and in this method,
Keep ink pressure and excitation conditions within a certain range of appropriate values,
Ink droplets of two sizes are generated from the tip of the nozzle, and only these medium and small diameter droplets are used for recording. A feature of this method is that it is possible to obtain a group of minute droplets even with a nozzle diameter as large as conventional ones.

A third method is a piezo element method, in which a piezo element is used as a pressure means for applying pressure to the ink, rather than a mechanical means such as a pump as in other methods. This method applies an electric signal to a piezo element to cause mechanical displacement, thereby applying pressure to the ink and ejecting it from a nozzle.

Furthermore, the ink of the present invention is produced by a method described in Japanese Patent Application Laid-Open No. 54-59936, in which the ink undergoes a rapid volume change when subjected to the action of thermal energy, and the acting force due to this state change causes the ink to It is suitable for textile printing using an inkjet method in which it is ejected from a nozzle, and exhibits excellent ejection stability.

Any of the various ink jet methods described above can be used, and by adopting any of these methods, characters, figures, and other designs are formed using ink adhered to fabrics such as woven or non-woven fabrics. The inkjet ink of the invention is
As mentioned above, since the surface tension is preferably controlled within a certain range, the ejection stability of droplets from the nozzle is extremely excellent. Furthermore, due to the presence of the texture of the woven fabric, etc., the ink does not bleed excessively and is properly adhered.

Therefore, a clear and fine pattern can be formed through a subsequent dyeing process using alkali treatment and heat treatment. On the other hand, when conventional inkjet inks are used, the dots may not adhere to the desired position accurately, or the adhered ink dots may quickly bleed along the weave of the woven fabric, causing it to form on the woven fabric. It was difficult to form fine patterns on the surface.

As described above, with the inkjet ink of the present invention, the ink can be adhered to a woven fabric etc. according to the image signal, and the reactive dispersion type dye in the ink in this state simply adheres to the woven fabric. Therefore, it is preferable to subsequently perform a step of reaction-fixing the dye onto the fiber and removing the unfixed dye.

In such a fixing process, the reactive dispersion dye reacts with the fibers, but when conventional printing ink containing a printing machine solvent that reacts with the reactive dispersion dye, such as polyhydric alcohol, is used, the ink A portion of the dye already reacts with the organic solvent during storage, causing a decrease in dye fixation rate.

Furthermore, since these polyhydric alcohols are non-volatile, they remain to some extent during this fixing process, and during this fixing process, the reactive dispersion dye and the organic solvent such as polyhydric alcohol react, and these reactions occur. This causes a decrease in washing fastness.

In the present invention, by not using such a reactive organic solvent, it was possible to prevent a decrease in the dye dyeing rate and a decrease in the washing fastness of the printed product.

These reactive fixing and unreacted dye removal methods may be conventionally known methods, such as steaming method, HT steaming method, thermofix method, alkali pad steam method, alkali blot steam method, and alkali shock method. It can be carried out according to conventionally known methods, such as washing after treatment by an alkali cold fix method or the like.

(Operations/Effects) According to the present invention as described above, there is no need to create an expensive printing plate as in conventional general textile printing, and images to be printed can be created and modified very easily by a computer. Therefore, it is possible to respond to changes in fashion from time to time without requiring expensive plates as in the prior art.

Therefore, sufficient profits can be secured even with small-scale production without mass production as in the prior art. Further, it has the advantage that it can be applied not only to industrial textile printing methods but also to hobby printing at home, and can provide printed products with high washing fastness.

Next, the present invention will be explained in more detail with reference to Examples and Comparative Examples. Note that the numbers in the middle of the text and % are based on weight.6 Example 1 Dye of Makki structural formula (2) 5 parts Anionic surfactant (dispersant) (Product name Demol N, manufactured by Kao@) 4 parts Tetra Ethylene glycol dimethyl ether 30 parts water
61 parts After dispersing all the above ingredients in an alumina ball mill for about 36 hours, the pH was adjusted to 8.3 with sodium hydroxide, and further dispersion was carried out for 3 hours in an alumina ball mill, and then,
Coarse particles with a particle size of 10 μm or more are removed using Fluorobor Filter FP-1000 (product name: manufactured by Sumitomo Electric).
Aqueous ink (A) of the present invention was obtained.

Example 2 Dye with structural formula (7) 4-part anionic surfactant (trade name Nilacol 0TP-100s,
Nikko Chemicals Co., Ltd.) 0.05 parts Anionic surfactant (Product name: Demol C1, manufactured by Kao ■) 1.5 parts Nonionic surfactant (Product name: Emulgen 981, manufactured by Kao ■)
0.2 parts diethylene glycol diethyl ether 6.5 parts N-methyl-2-pyrrolidone 15 parts water
73 parts A water-based ink (B) of the present invention was obtained in the same manner as in Example 1 except that all the above components were used.

Example 3 Dye of the above structural formula (14) 781S Dye of the above structural formula (15) 2-part nonionic surfactant (trade name Emulgen 707, manufactured by Kao ■)
1.5 parts nonionic surfactant (product name
Rheodor TW-P120, manufactured by Kao Oki) 2.0
10 parts dipropylene glycol dimethyl ether 20 parts 1.3-dimethyl-2-imidazolidinone Water 57.5
After dispersing all of the above ingredients in an alumina ball mill for about 40 hours, the pH was adjusted to 5.6 with acetic acid, and further dispersed for 2 hours.
time dispersion, then Fluorobor filter FP-50
Coarse particles having a particle size of 5 μm or more were removed using 0 (trade name: manufactured by Sumitomo Electric Industries, Ltd.) to obtain an aqueous ink (C) of the present invention.

Example 4 Dye of the structural formula (9) 6 parts Anionic surfactant (trade name IONET D-2, manufactured by Sanyo Chemical Industries, Ltd.) 5.5 parts + 13 (knee (0 to 3116)
) -(0(:2+14') -0C211520 parts Water 68.5 parts Using all the above ingredients, the other methods were the same as in Example 3,
Aqueous ink (D) of the present invention was obtained.

Comparative Example 1 A comparative ink (E) was obtained in the same manner as in Example 1, except that triethylene glycol was used instead of tetraethylene glycol dimethyl ether in the components of Example 1.

Comparative Example 2 A comparative ink (F) was obtained in the same manner as in Example 3, except that dipropylene glycol was used instead of dipropylene glycol dimethyl ether in the components of Example 3.

The properties of the inks of Examples 1 to 4 and Comparative Examples 1.2 are shown in Table 1 below.

Example 5 Each water-based ink of Examples 1 to 4 and Comparative Example 1.2 (A-
F) was printed on each sleeve blended woven fabric by loading it on an inkjet printer using a thermal weft lugy according to the method described in Japanese Patent Application Laid-Open No. 54-59936.
Heat treatment was performed at 180°C for 90 seconds. Furthermore, 1A fill dyeing was carried out at 90° C. for 20 seconds in an alkaline bath adjusted with sodium carbonate, and then washed with a neutral detergent to obtain a print. The results are shown in Table 2 below.

Example 6 Dye of the above structural formula (7) 10 parts Anionic surfactant (dispersant, trade name Demol N, manufactured by Kao@)
5 parts 1,3-dimethyl-2-imidazolidinone 70 parts Water 15
A water-based ink (G) was obtained in the same manner as in Example 1 except that all the above components were used. The surface tension of ink (G) is 39
dyne/c+s, and the pH was 8.3.

A print was obtained using this ink (G) in the same manner as in Example 5. The results were almost the same as those using ink (A).

Example 7 Among the ink components of Example 6, only the dye had the above structural formula (1
) , (5) , (+21, (16), (18)
Five types of aqueous inks (H), (1), (J), (ni), and (L) were obtained in the same manner as in Example 6 except for the following. The surface tension and pH of these inks were the same as those of ink (G).

Prints were obtained in the same manner as in Example 5 using the five types of inks individually. The results are all ink C
The result was almost the same as that using G).

(F margin) 2 Σ-1-j〈- Kaga stop i-go issue ga' Ll d Cbi 44 5
0 38 42 55 412 days
8.3 8.3 5.6 5.6
8.3 5.8 Two Fang L-2-j〈- W Ga de Song Dynasty Jong-il i*3 0 0
0 mountain fat ξ group! 4 0 0
0 New Kaki Fusong Dynasty Arrived in Sung Dynasty! Yu OX
Hirohiroken Tsujitsunooka ○ ×
x Book 1 The sharpness of the thin line (width approximately 1 AO) of the printed product was visually determined.

0: Good
+Printed and visually judged the dot variation. Asahi O: Good.

O: No difference ×: Color density decreased after washing.

*4 The printed matter was further washed with a neutral detergent for 1 hour, and visually compared with a case where the washing time was 10 minutes.

O: No difference ×: As the washing time becomes longer, the color density decreases.

Claims (29)

[Claims] (1) An inkjet ink whose main components are a reactively dispersed dye, water, and a solvent mainly composed of an organic solvent that is non-reactive with the reactively dispersed dye. (2) The inkjet ink according to claim (1), wherein the organic solvent is an organic solvent that does not contain active hydrogen. (3) The organic solvent is at least one selected from dimethylformamide, dimethylacetamide, acetone, methyl ethyl ketone, tetrahydrofuran, dioxane, N-methyl-2-pyrrolidone, and 1,3-dimethyl-2-imidazolidinone. An inkjet ink according to claim (1). (4) The organic solvent is dialkyl (1 to 4 carbon atoms) ether of polyoxyethylene (1 to 15 moles added), polyoxyethylene/oxypropylene block (
or random) copolymer (number of added moles 1 to 15)
The inkjet ink according to claim 1, wherein the inkjet ink is at least one selected from dialkyl (1 to 4 carbon atoms) ethers. (5) The inkjet ink according to claim (1), wherein the organic solvent is contained in the solvent in an amount of 1 to 70% by weight. (6) The reactive dispersion type dye is contained in the ink in a range of 0.1 to 15%.
% by weight of the inkjet ink according to claim (1). (7) The inkjet ink according to claim (1), further comprising any one of a dispersant, a surfactant, or a viscosity modifier. (8) Surface tension: 30 to 60 dyne/cm (25℃
) The inkjet ink according to claim (1), which is adjusted to the range of (1). (9) The inkjet ink according to claim (1), wherein the viscosity is adjusted to 50 cps (25° C.) or less. (10) In an inkjet textile printing method in which a printing ink is applied by an inkjet method to a fabric containing fibers that can be dyed with a reaction-dispersion dye, the printing ink includes a reaction-dispersion dye, water, and a reaction-dispersion dye. An inkjet textile printing method characterized by using an ink whose main composition is a solvent mainly composed of an organic solvent that is non-reactive with respect to the organic solvent. (11) The inkjet textile printing method according to claim (10), wherein the fabric is a blended woven fabric or blended nonwoven fabric containing at least fibers dyeable with a reactive dispersion dye. (12) The inkjet textile printing method according to claim (10), wherein the organic solvent is an organic solvent that does not contain active hydrogen. (13) The organic solvent is at least one selected from dimethylformamide, dimethylacetamide, acetone, methyl ethyl ketone, tetrahydrofuran, dioxane, N-methyl-2-pyrrolidone, and 1,3-dimethyl-2-imidazolidinone. An inkjet textile printing method according to claim (10). (14) The organic solvent is a dialkyl (1 to 4 carbon atoms) ether of polyoxyethylene (1 to 15 moles added), a polyoxyethylene/oxypropylene block (or random) copolymer (1 to 15 moles added), Claim No. 10, which is at least one selected from dialkyl (1 to 4 carbon atoms) ethers (15)
The inkjet textile printing method described in section. (15) The inkjet textile printing method according to claim (10), wherein the organic solvent is contained in the solvent in an amount of 1 to 70% by weight. (16) The reactive dispersion type dye is contained in the ink at 0.1 to 1
The inkjet textile printing method according to claim (10), which contains 5% by weight. (17) The inkjet textile printing method according to claim (10), further comprising any one of a dispersant, a surfactant, or a viscosity modifier in the ink. (18) The surface tension of the ink is 30 to 60 dyne/c.
Claim No. (10) adjusted to the range of m (25°C)
) The inkjet textile printing method described in item 1. (19) The inkjet textile printing method according to claim (10), wherein the viscosity of the ink is adjusted to 50 cps (25° C.) or less. (20) Applying a printing ink to a fabric containing fibers that can be dyed with a reactive dispersion dye using an inkjet method,
In an inkjet textile printing method that then undergoes dyeing treatment,
An inkjet textile printing method characterized in that the textile printing ink is an ink whose main components are a reactive dispersion dye, water, and a solvent mainly consisting of an organic solvent that is non-reactive with the reactive dispersion dye. (21) The inkjet textile printing method according to claim (20), wherein the fabric is a blended woven fabric or blended nonwoven fabric containing at least fibers dyeable with a reactive dispersion dye. (22) The inkjet textile printing method according to claim (20), wherein the organic solvent is an organic solvent that does not contain active hydrogen. (23) The organic solvent is at least one selected from dimethylformamide, dimethylacetamide, acetone, methyl ethyl ketone, tetrahydrofuran, dioxane, N-methyl-2-pyrrolidone, and 1,3-dimethyl-2-imidazolidinone. An inkjet textile printing method according to claim (20). (24) The organic solvent is a dialkyl (1 to 4 carbon atoms) ether of polyoxyethylene (1 to 15 moles added), a polyoxyethylene/oxypropylene block (or random) copolymer (1 to 15 moles added), Claim No. 20, which is at least one selected from dialkyl (1 to 4 carbon atoms) ethers (15)
The inkjet textile printing method described in section. (25) The inkjet textile printing method according to claim (20), wherein the organic solvent is contained in the solvent in an amount of 1 to 70% by weight. (26) The reactive dispersion dye is contained in the ink at 0.1 to 1
The inkjet textile printing method according to claim (20), which contains 5% by weight. (27) The inkjet textile printing method according to claim (20), further comprising any one of a dispersant, a surfactant, or a viscosity modifier in the ink. (28) The surface tension of the ink is 30 to 60 dyne/c.
Claim No. (20) adjusted to the range of
) The inkjet textile printing method described in item 1. (29) The inkjet textile printing method according to claim (20), wherein the viscosity of the ink is adjusted to 50 cps (25° C.) or less.