JPH073035B2 - Cloth for dyeing ink jet and its dyeing method - Google Patents

Description

The present invention relates to a fabric for dyeing ink jet and a method for dyeing the same, and in particular, a high-class design with bleeding prevention is obtained, and high fastness is obtained even without soaping. The present invention relates to a cloth for ink jet dyeing and a method for dyeing the same.

[Conventional technology]

In recent years, with the development of color ink jet printing technology, for example, as shown in JP-A-54-18975,
Attempts have been made to utilize this for textile printing.

When attempting to use it for textile printing, problems occur that the color looks lighter and bleeding is greater than when printing on paper. Further, there are various kinds of cloth to be dyed, as compared with paper. Due to these reasons, it is difficult to say that a common bleeding prevention means and a common ink jet ink for cloth have been developed.

The present inventors have already proposed in JP-A-60-81379 a method of gelling the ink on the fiber surface to prevent bleeding. Although this method is extremely effective in preventing bleeding, it has the drawback that the viscosity of the ink becomes high and the texture becomes hard because it is necessary to use sodium alginate, PVA, etc. as a sizing agent for the ink. In addition, as a pretreatment agent, Ca ⁺² , Ba
^Since it is necessary to use a metal salt such as ⁺² , problems such as rust occurring on the sewing machine needle during sewing also occur. Therefore, a soaping step for removing the sizing agent of the ink component and the metal salt used for pretreatment is required, and it has been difficult to achieve a rationalized process.

Further, JP-A-59-106989 describes a method of pretreating recording paper with a cationic component to improve the water resistance and light resistance of a water-soluble dye. Noh was still not sufficient, and it was impossible to form a delicate and clear pattern, and there were problems such as large white-field contamination during soaping.

[Problems to be solved by the invention]

An object of the present invention is to provide a fabric for dyeing an ink jet, which has an excellent anti-bleeding effect and high fastness without soaping, and a method for dyeing the fabric.

[Means for solving problems]

An object of the present invention is to include a cationic multimer represented by the following general formula, which is a cloth for dyeing an ink jet: _{R 1, R 2: H,} CH 3 R 3, R 4: -CH 3, -CH 2 -CH 3, -CH 2 -CH 2 -OH, X: a halogen atom, OSO ₃ CH ₃ n: an integer of 5 to 20, and an ink jet dyeing method characterized by using an anionic ink containing a water-insoluble dye / pigment as an essential component when ink-jet dyeing the cloth. Will be achieved.

The cloth for dyeing ink jet of the present invention means a cloth before dyeing which is used for ink jet, and its material is not particularly limited. Further, the water-insoluble dye and pigment in the present invention,
Disperse dyes, oil-soluble dyes, reactive disperse dyes, and other dyes and / or pigments are used, and the optimum material to be dyed is determined according to the dyes and pigments used. A particularly preferred combination is
There are combinations of disperse dye and polyester or acetate cloth, and pigment and cotton cloth.

It is essential that the cloth for dyeing ink jet in the present invention contains the cationic multimer represented by the above general formula. The amount is 0.1% to 10% by weight. The cationic multimer may consist of a single repeating unit represented by the general formula, or may be a copolymer of it with another comonomer. Further, other cationic compounds such as quaternary ammonium salt or polyethyleneimine may be added together with the cationic multimers. Also, as a small amount of metal salts, Ca ⁺² , Ba ⁺² , Mg
Addition of ⁺² , K ⁺¹ etc. does not significantly reduce the ability to prevent bleeding.

The cationic multimer used in the present invention can be produced by a known method, for example, the method described in JP-B-56-9999.

It is also preferable to use a hindered phenol type and a phosphorus type anti-yellowing agent such as sodium hypophosphite and sodium phenylphosphinate together with the cationic multimer.

When the content of the cationic multimer, that is, the amount of adhesion is less than 0.1%, the gelling effect is small and a sufficient bleeding preventing effect cannot be obtained. On the other hand, if it is 10% or more, the texture is hardened and the cost is increased.

The method of attaching the cationic multimer to the cloth is not particularly limited, and it may be a dipping method, a pad method, a coating method, a spray method,
An appropriate method such as an ink jet method may be used which can attach a predetermined amount of the cationic multimer to the cloth.

The cationic multimer serves to prevent bleeding by the action of gelling, solidifying or aggregating with the anionic component blended in the ink.

The anionic ink used in the present invention contains a compound having an anionic group (M is Na, ammonium, amine) such as —COOM, —SO ₃ M, and —OSO ₃ M as an anion component. Some of them are listed.

Specific examples of the anion component include dispersants used in water-insoluble dyes, for example, n: integer of 1 to 3 m: integer of 1 to 20 M: Na, H, amine, ammonium, and anion component used as an additive, for example, sulfonic acid group-containing water-soluble or water-dispersible polyester resin, etc. There is.

The ink component is a water-based medium ink, and in addition to the anion component, glycols, a pH adjusting agent, a chelating agent, an antiseptic agent and the like may be appropriately added as a drying inhibitor.

On the cationic multimer-containing cloth of the present invention, a pattern is created by an ink jet dyeing machine using the anion component-containing water-insoluble dye / pigment ink as described above, and then color is developed by a usual fixing treatment. Fastness is good even without soaping, but a soaping step can be incorporated if desired.
In the present invention, when a water-insoluble dye is used, there is also an advantage that there is no white field contamination during soaping, which is seen in a water-soluble dye.

〔Example〕

 Hereinafter, the present invention will be described in more detail with reference to Examples.

Example 1 A satin fabric made of polyester fiber is shown in Table 1 and a cationic multimer is padded (squeezing ratio 60%)-dried (120 ° C).
For 5 minutes) to obtain a pretreated cloth.

Next, a disperse dye ink having the following composition was prepared. ^* CI Disperse Blue 79 (20%) 25% 1,4-Butanediol 20% Ion-exchanged water 55 % 100% (* CI Disperse Blue 79 dye base 40g, as a dispersant Glass beads (1 mφ) 200 c.c. were added to 12 g and ion-exchanged water 148 g, dispersed for 30 hours at 2000 rpm with a sand grinder, and filtered with a 1 μ cut filter. ) The ink was degassed and the viscosity was measured with an E-type viscometer (30 ° C)
Was 1.6 cp.

Using this ink and cloth, printing was carried out under the following ink jet conditions.

Method: On-demand Nozzle diameter: 60μ Distance between nozzle and cloth: 1mm Resolution: 8 dots / mm Applied voltage: 50V After printing, HT-S is used for 8 minutes at 170 ° C to secure the fastness and dot diameter. The results are shown in Table 1.

As shown in Table 1, Nos. 2 and 3 of the method of the present invention had a small dot diameter and a delicate pattern in which bleeding was prevented was obtained.
On the other hand, other than the cationic multimers of the method of the present invention, the dot diameter was large and a sufficient bleeding preventing effect could not be imparted.
Also, the fastness was the same as that without pretreatment (No. 1) without soaping.

The cloth pretreated with the cationic multimer of the method of the present invention had no bleeding, a delicate pattern was obtained, and sufficient fastness could be imparted without soaping.

The bleeding preventing effect of the method of the present invention is the result of gelation of the dye based on the high binding force between the anionic component used as the dispersant and the cationic multimer of the present invention.

Example 2. A broad fabric made of cotton was pretreated with the pretreatment agent shown in Table 2 in the same manner as in Example 1. Next, an ink composition of the water-soluble dye shown below was prepared.

Ink composition AB CI Reative Red 40 10% 10% Diethylene glycol 20% 20% Ion-exchanged water 70% 60% Dispersant of Example 1-10% 100% 100% Ink jet dyeing in the same manner as in Example 1 Then, the dot diameter was measured, and the results are shown in Table 2.

From the results shown in Table 2, even if the anion component is added to the ink using the cloth pretreated with the cationic multimer of the method of the present invention, the water-soluble dye cannot be prevented from bleeding.

Therefore, the fabric of the present invention has a specific effect on the water-insoluble dye.

Example 3. Broad fabric consisting of polyester fibers and cotton (polyester 65 / cotton 35) was pretreated with the cationic multimers shown in Table 3.

Next, the pigment inks shown below were prepared.

Ink jet dyeing was carried out in the same manner as in Example 1 except that fixing was carried out at 150 ° C. for 3 minutes.

The results are shown in Table 3 showing the dot diameter and the fastness to masatsu.

As can be seen from Table 3, the ink (C) containing the dispersant as the anion component and the ink D containing the dispersant and the polyester resin as the additive have a significantly large bleeding-preventing effect on the fabric of the present invention, which gives a high-class feeling. A certain pattern was obtained.

Regarding the fastness, when polyester resin was added as a binder, the adhesion of the pigment was increased, and good results were obtained.

Incidentally, the cationic multimer slightly increases the yellowness (YI) of the cloth, and the yellowing phenomenon is observed. As the anti-yellowing agent, the one to which sodium hypophosphite is added has a markedly reduced yellowness and does not lower the bleeding preventing ability.

[Effects of the Invention] The ink-jet dyeing cloth of the present invention exhibits a remarkable bleeding preventing effect particularly for water-insoluble dyes, and can impart a delicate and clear pattern. In addition, sufficient dyeing fastness can be obtained without incorporating a soaping step, which is of great aesthetic value.

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Claims (3)

[Claims] 1. A cloth for dyeing an ink jet, comprising a cationic multimer represented by the following general formula. _{R 1, R 2: H,} CH 3 R 3, R 4: -CH 3, -CH 2 -CH 3, -CH 2 -CH 2 -OH, X: halogen atom, OSO ₃ CH ₃ n: integer from 5 to 20 2. The ink jet dyeing cloth according to claim 1, wherein the content of the cationic polymer is 0.1 to 10% by weight. 3. An ink jet dyeing method, which comprises ink jet dyeing a cloth containing a cationic multimer represented by the following general formula with an anionic ink containing a water-insoluble dye / pigment as an essential component. _{R 1, R 2: H,} CH 3 R 3, R 4: -CH 3, -CH 2 -CH 3, -CH 2 -CH 2 -OH, X: halogen atom, OSO ₃ CH ₃ n: integer from 5 to 20