JP4138507B2 - Ink composition for inkjet printing, printing method, and printed fabric - Google Patents

Description

表１において、％は重量％である。
【００２３】
【表２】

表２において、耐光性（ＪＩＳ Ｌ０８４２）の級数は、それが高いほど、耐光性が優れていることを示す。「３級」あるいは「５級」は、それぞれ、３級の標準染料あるいは５級の標準染料と同程度の耐光性を有することを意味する。
【００２４】
表１及び表２から明らかなように、本発明によるインクジェット捺染用インク組成物（実施例１〜３）では、Ｌ^*ａ^*ｂ^*のａ^*値及びｂ^*値の高い値が得られた。従って、広い色再現範囲を得ることができた。しかも高い耐光性も示した。
一方、アシッドオレンジ９４のみを含むインク組成物（比較例１）では、高い耐光性を示すものの、色調の彩度が極端に低くなった。すなわち、Ｌ^*ａ^*ｂ^*のａ^*値及びｂ^*値が低くなった。従って、広い色再現範囲を得ることはできない。更に、アシッドオレンジ５６のみを含むインク組成物（比較例２）では、広い色再現範囲を得ることができたが、充分な耐光性は得ることができなかった。
【００２５】
【発明の効果】
本発明によれば、ポリアミド系繊維製布帛のインクジェット捺染において、オレンジ色相に関して広い色再現範囲、特に高彩度を得ることができ、しかも高い耐光性を示す。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ink composition for inkjet textile printing, a textile printing method, and a textile fabric. When the ink composition for ink jet textile printing according to the present invention is used for textile printing of polyamide fiber fabric, a wide color reproduction range is obtained with respect to the orange hue, and high light resistance is exhibited even though high chroma can be obtained.
[0002]
[Prior art]
Conventionally, a screen printing method, a roller printing method, a rotary screen printing method, a transfer printing method, or the like has been generally used as a method for printing a pattern such as an image or a character on a fabric. However, these conventional methods require troublesome operations for manufacturing traces, plate making, etc. for each pattern, and thus it is difficult to reduce the cost, and are not particularly suitable for small-quantity, multi-product production. In order to eliminate these disadvantages of the prior art, a technique of reading an image sample with an image input device such as a scanner, performing image processing with a computer, and printing a fabric by an inkjet method based on the obtained image information, that is, Inkjet textile printing methods have been developed and put into practical use. This ink jet recording system is a recording system in which ink droplets are ejected from an ink head toward a recording medium (for example, paper or fabric) and the liquid droplets adhere to the recording medium. Has been put to practical use, and development is also progressing for fabrics.
For example, Japanese Patent Laid-Open No. 7-3666 (Patent Document 1) discloses an ink-jet printing method, and a specific perceptual chromaticity index in a hue range [CIE 1976 (L ^* a ^* b ^* ) space] on a fabric. An ink set comprising a combination of dyes having a and b is described.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 7-3666
[Problems to be solved by the invention]
However, when the present inventor conducted additional tests on various dyes for ink jet printing described in JP-A-7-3666, a dye having sufficiently satisfactory properties, particularly with respect to the color reproduction range of the orange hue, was specifically described. Was found not to be described. That is, a dye or a combination of dyes capable of obtaining a wide color reproduction range with respect to an orange hue and obtaining particularly high saturation, particularly when used for textile printing of polyamide fiber, is described in JP-A-7-3666. Is not specifically described.
Moreover, high light resistance is requested | required of the dye used for textile printing. In general, dyes exhibiting high saturation have low light resistance, and dyes having high light resistance tend to have low saturation, and it is extremely difficult to find dyes or combinations thereof having both high saturation and high light resistance. is there. Further, when a combination of a plurality of dyes is used in ink jet printing, the influence of the dye having the poor physical properties such as the color reproduction range and light resistance appears remarkably in the printed product. It is necessary to select and combine dyes that are excellent in degree.
As a result of intensive research on combinations of dyes that can be used for inkjet printing of polyamide fiber fabrics, the present inventor can obtain a wide color reproduction range for orange hues, in particular high saturation, and exhibit high light resistance. The combination was found.
The present invention is based on these findings.
[0005]
[Means for Solving the Problems]
Therefore, the present invention
(1) 3-5% by weight of at least one dye selected from the group consisting of Acid Orange 67, Acid Orange 149, and Acid Yellow 38; and (2) 3.5-5% by weight of Acid Orange 94. It is related with the ink composition for inkjet textile printing characterized by including in each quantity.
According to a preferred aspect of the present invention, the ink composition for inkjet textile printing further contains a humectant, a penetrating agent, and water.
According to a further preferred aspect of the present invention, the ink composition for ink jet textile printing comprises a moisturizer 4 to 40% by weight, a penetrant organic solvent 2 to 15% by weight, and a penetrant surfactant 0.2 to 2% by weight. Containing.
[0006]
The present invention also relates to a method for printing a fabric, and a printed fabric obtained by the printing method, characterized in that a polyamide-based fiber fabric is printed by an ink jet method using the ink composition.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
In the ink composition of the present invention,
(1) 3-5% by weight of at least one dye selected from the group consisting of Acid Orange 67, Acid Orange 149, and Acid Yellow 38; and (2) 3.5-5% by weight of Acid Orange 94. In each amount.
That is, when only one of Acid Orange 67, Acid Orange 149, or Acid Yellow 38 is used in one type, any one of them is 3 to 5% by weight based on the total weight of the ink composition. When two or three dyes selected from the group consisting of Acid Orange 67, Acid Orange 149, and Acid Yellow 38 are used in combination, the total of these two or three dyes is used. The content is 3 to 5% by weight with respect to the total weight of the ink composition.
[0008]
If the content of the dye selected from the group consisting of Acid Orange 67, Acid Orange 149, and Acid Yellow 38 of (1) is less than 3% by weight, sufficient color development may not be obtained. Further, when the content of the dye selected from the group consisting of Acid Orange 67, Acid Orange 149, and Acid Yellow 38 of (1) exceeds 5% by weight, white field contamination is likely to occur. On the other hand, when the content of the acid orange 94 (2) is less than 3.5% by weight, sufficient color development may not be obtained. On the other hand, when the content of the acid orange 94 of (2) exceeds 5% by weight, white spot contamination is likely to occur.
[0009]
The ink composition according to the present invention preferably contains a humectant from the viewpoint of improving the ejection stability from the nozzles of the recording head of the ink jet printer. As the humectant, a compound used as a humectant in a normal ink-jet printing ink composition can be used. For example, glycerin, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol, propylene glycol , Dipropylene glycol, polypropylene glycol, 1,3-propanediol, 1,4-butanediol, 1,2-hexanediol, 1,5-pentanediol, 1,6-hexanediol, 1,2,6-hexane Polyols such as triol or pentaerythritol, and derivatives thereof such as ethers or esters thereof; lactams such as 2-pyrrolidone, N-methyl-2-pyrrolidone, or ε-caprolactam; urea, thiourea, ethyleneurine Or ureas such as 1,3-dimethylimidazolidinone; saccharides such as maltitol, sorbitol, gluconolactone, or maltose, and the like, and one or more of these can be used. . The content of the humectant is preferably 4 to 40% by weight with respect to the total weight of the ink composition.
[0010]
In addition, the ink composition according to the present invention preferably contains a water-soluble organic solvent that also functions as a penetrant from the viewpoint of increasing the wettability to the fabric and increasing the ink permeability. As such a penetrant organic solvent, a compound used as a penetrant organic solvent in a normal ink-jet printing ink composition can be used, for example, lower alcohols such as ethanol or propanol; ethylene glycol monomethyl Cellosolves such as ether or ethylene glycol monoethyl ether; carbitols such as diethylene glycol monomethyl ether or diethylene glycol monoethyl ether; ethylene glycol mono-n-butyl ether, diethylene glycol n-butyl ether, or triethylene glycol-n -Glycol ethers, such as butyl ether, etc. can be mentioned, These 1 type (s) or 2 or more types can be used. The content of the water-soluble organic solvent (penetrating agent) is preferably 2 to 15% by weight with respect to the total weight of the ink composition.
[0011]
From the same viewpoint, the ink composition according to the present invention preferably contains a surfactant that also functions as a penetrant. As such penetrant surfactant, a compound that is used as a penetrant surfactant in a normal ink-jet printing ink composition can be used, and examples thereof include anionic properties such as fatty acid salts; alkyl sulfate ester salts and the like. Surfactant; Nonionic surfactant such as polyoxyethylene alkyl ether and polyoxyethylene alkyl phenyl ether; Surfynol 61, 82, 104, 440, 465, 485 (all trade names, Air Products and Chemicals) Acetylene glycol surfactants such as those manufactured by Komatsu Ltd .; cationic surfactants; amphoteric surfactants and the like, and one or more of these can be used. The content of the surfactant (penetrating agent) is preferably 0.2 to 2% by weight with respect to the total weight of the ink composition.
[0012]
As described above, the ink composition according to the present invention contains the dye, and if necessary, contains a moisturizing agent and a penetrating agent, and further contains water as a balance. As water, it is preferable to use ion-exchanged water, ultrafiltered water, reverse osmosis water, pure water such as distilled water, or ultrapure water. In particular, water obtained by sterilizing these waters by ultraviolet irradiation or addition of hydrogen peroxide is preferable because generation of mold and bacteria is prevented over a long period of time.
[0013]
In the ink composition according to the present invention, an antifungal agent, an antiseptic agent, an antioxidant, an ultraviolet absorber, a chelating agent, an oxygen absorber, a pH adjuster (for example, triethanolamine), or a dissolution agent, as necessary. As an auxiliary agent, one or more of various additives that can be usually used in an ink composition for inkjet textile printing can be contained.
[0014]
The ink composition for inkjet textile printing according to the present invention can be produced by a usual method. That is, the ink composition for ink jet textile printing according to the present invention is different from the conventional ink composition for ink jet textile printing in that it contains two or three kinds of the above-mentioned specific dyes as dyes. Then, since there is no particular difference, it can be produced by a conventionally known ordinary method except that two or three of the specific dyes described above are used as the dye.
[0015]
The ink composition according to the present invention preferably has a surface tension of 25 to 40 mN / m, preferably 28 to 35 mN / m, from the viewpoint of the balance between print quality and reliability as an ink composition for ink jet textile printing. Is more preferable. From the same viewpoint, the viscosity of the ink composition according to the present invention at 20 ° C. is preferably 1.5 to 8 mPa · s, and more preferably 2 to 6 mPa · s. In order to make the surface tension and the viscosity within the above ranges, a method for adjusting the concentration of the dye, a means for adjusting the type and amount of the humectant, and the like can be used.
[0016]
When the ink composition of the present invention is used for ink jet printing on fabrics (for example, woven fabrics, nets, or nonwoven fabrics) made of polyamide fibers [silk, wool, synthetic polyamide (nylon) fibers, etc.], high light resistance is maintained. As it is, a wide color reproduction range, particularly high saturation, can be obtained with respect to the orange hue. When the ink composition of the present invention is used, it is used by being loaded into an ink jet printer in the same manner as a normal ink composition for ink jet textile printing. The inkjet printer is not particularly limited, but a drop-on-demand inkjet printer is preferable. The drop-on-demand ink jet printer employs a piezoelectric element recording method in which recording is performed using a piezoelectric element disposed on a recording head, and heat energy generated by a heater of a heating resistance element disposed on the recording head. There is a method that employs a thermal jet recording method that performs recording using a recording medium, and any recording method can be employed.
[0017]
When the inkjet printing method is performed on the fabric using the ink composition of the present invention, the fabric may be pretreated using a pretreatment agent in advance, as in the case of normal inkjet printing. preferable. The pretreatment of the cloth is performed by immersing the cloth in the pretreatment agent or by applying or spraying the pretreatment agent onto the cloth, and then attaching the pretreatment agent to the cloth and then drying the cloth. Is done.
[0018]
As the pretreatment agent, an aqueous solution containing a paste such as a water-soluble polymer compound in an amount of 0.01 to 20% by weight can be used. Examples of the paste include starch substances such as corn or wheat; cellulosic substances such as carboxymethylcellulose or hydroxymethylcellulose; polysaccharides such as sodium alginate, arabic gum, locust bean gum, ant gum, guar gum, or tamarind seeds; Proteins such as gelatin or casein; natural water-soluble polymers such as tannin; lignin; and synthetic water-soluble polymers such as polyvinyl alcohol compounds, polyethylene oxide compounds, acrylic acid compounds, or maleic anhydride compounds Can be mentioned. The pretreatment agent contains various additives such as a moisturizer such as urea or thiourea, a pH adjuster, a reduction inhibitor, a penetrating agent, a sequestering agent, or an antifoaming agent as necessary. You can also.
[0019]
In addition, when the ink-jet printing method is carried out on the fabric using the ink composition of the present invention, the ink composition is ejected onto the fabric to print characters and / or images, and then the dye. Fixing process is performed. Examples of the dye fixing treatment method include the same methods as the dye fixing treatment method in the conventional textile printing method, for example, the normal pressure steam method, the high pressure steam method, and the thermofix method. After the dye fixing treatment, the fabric is washed with water and dried as usual. If necessary, a soaping process (a process in which unfixed dye is washed away with a hot soap solution) may be performed.
[0020]
【Example】
EXAMPLES Hereinafter, although this invention is demonstrated concretely based on an Example, these do not limit the scope of the present invention.
<Examples 1-3 and Comparative Examples 1 and 2>
(1) Preparation of ink composition An ink composition comprising the components shown in Table 1 below was prepared.
(2) A pretreatment aqueous solution containing 250 g / L of inkjet printing guar gum, 20 g / L of ammonium sulfate, and 100 g / L of urea is used as a silk fabric sample, a wool fabric sample, and a synthetic polyamide fabric sample as a fabric sample (A4 size). Each was applied at a drawing ratio of 90% and dried at 120 ° C. for 2 minutes. Subsequently, in an ink jet printer (PM900C; manufactured by Seiko Epson Corporation) in which the pretreated silk fabric sample, wool fabric sample, and synthetic polyamide fabric sample were filled with the ink composition prepared in (1) above, A solid ink solid pattern was printed. Next, the printed silk fabric sample, wool fabric sample, and synthetic polyamide fabric sample are steamed for 30 minutes under conditions of a temperature of 102 ° C. and a humidity of 100%, and then washed with water and soaped (soap). And washed again with water (rinse) and dried using an iron to obtain a printed silk fabric sample, a wool fabric sample, and a synthetic polyamide fabric sample.
[0021]
[Evaluation]
(1) Evaluation of color reproduction range Using a Macbeth spectrophotometer type M-2020, each color solid pattern in each of the printed fabric samples of Examples 1 to 3 and Comparative Examples 1 and 2 was measured, and the CIE color was measured. The a ^* and b ^* of the system were determined. The results are shown in Table 2.
(2) Evaluation of light resistance The light resistance of each of the printed fabric samples of Examples 1 to 3 and Comparative Examples 1 and 2 was evaluated according to JIS L0842.
The results are shown in Table 2.
[0022]
[Table 1]

In Table 1,% is% by weight.
[0023]
[Table 2]

In Table 2, the higher the light resistance (JIS L0842) series, the better the light resistance. “3rd class” or “5th class” means having light resistance comparable to that of standard dyes of grade 3 or grade 5, respectively.
[0024]
As is apparent from Tables 1 and 2, the ink compositions for ink-jet printing according to the present invention (Examples 1 to 3) obtained high values of a ^* and b ^{* of} L ^* a ^* b ^* . . Therefore, a wide color reproduction range could be obtained. Moreover, it showed high light resistance.
On the other hand, the ink composition containing only Acid Orange 94 (Comparative Example 1) exhibited high light resistance, but the saturation of the color tone was extremely low. That is, the a ^* value and b ^* value of L ^* a ^* b ^* were low. Therefore, a wide color reproduction range cannot be obtained. Furthermore, with the ink composition containing only Acid Orange 56 (Comparative Example 2), a wide color reproduction range could be obtained, but sufficient light resistance could not be obtained.
[0025]
【The invention's effect】
According to the present invention, a wide color reproduction range, particularly high saturation, can be obtained with respect to an orange hue in inkjet printing of a polyamide fiber fabric, and high light resistance is exhibited.

Claims (5)

(1) 3-5% by weight of at least one dye selected from the group consisting of Acid Orange 67, Acid Orange 149, and Acid Yellow 38; and (2) 3.5-5% by weight of Acid Orange 94. An ink composition for ink-jet textile printing, characterized by comprising The ink composition according to claim 1, further comprising a humectant, a penetrating agent, and water. The ink composition according to claim 2, comprising 4 to 40% by weight of a humectant, 2 to 15% by weight of a penetrant organic solvent, and 0.2 to 2% by weight of a penetrant surfactant. A textile printing method comprising printing a polyamide fiber fabric by an ink jet method using the ink composition according to any one of claims 1 to 3. A printed fabric obtained by the printing method according to claim 4.