JP2002146686A - Paste for printing, and dye - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paste for printing hardly causing bleeding after dyeing compared to a conventional paste, having basic properties such as color development and levelness the same as or higher than these of the conventional paste, and capable of heightening the commercial value of a printed cloth. SOLUTION: This paste for the printing is characterized in that the paste contains a water-soluble nonionic cellulose ether and a water-soluble high- molecular compound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing paste and a dye. More specifically, the present invention relates to an excellent paste for printing without bleeding after dyeing and a dye containing the paste.

[0002]

2. Description of the Related Art A printing paste is used to faithfully draw a pattern or pattern on a cloth to be dyed.
It imparts viscous properties to the dye. When fixing the dye, it does not cause uneven dyeing, enhances the surface colorability, and is removed by washing after dyeing. As a printing paste used for this purpose, a water-soluble polymer has conventionally been used. As such water-soluble polymers, starches, natural gums, natural polymers such as sodium alginate, and carboxymethyl cellulose have been well known.

[0003] However, the conventional printing paste has a problem of bleeding after dyeing, that is, bleeding (dye bleeding from a printed portion to another portion) during steaming.
In particular, starches have excellent surface coloring properties, but have a problem of bleeding, and as a result, there is a problem that commercial value is reduced.

On the other hand, other natural gums, natural polymers such as sodium alginate and carboxymethylcellulose have less problems of bleeding than starches, but they are not always satisfactory from the viewpoint of the commercial value of the cloth to be dyed. There has been a demand for an excellent printing paste which is free of bleeding.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and includes a paste for solving the above-mentioned drawbacks observed in conventional pastes for printing, that is, an excellent paste for printing without bleeding after dyeing. It is intended to provide a dye.

[0006]

Means for Solving the Problems and Embodiments of the Invention The present inventors have conducted intensive studies in order to achieve the above object, and as a result, have found that a water-soluble nonionic cellulose ether having a thermogelling property can be produced at a natural level. It has been found that an excellent paste for printing without bleeding after dyeing can be obtained when used in combination with a water-soluble polymer compound such as a molecular polysaccharide and a derivative thereof.

That is, the present invention provides (1) a printing paste characterized by comprising a water-soluble nonionic cellulose ether and a water-soluble polymer compound, and (2) a water-soluble nonionic cellulose ether comprising an alkyl The printing paste according to (1), which is cellulose, hydroxyalkylcellulose, or hydroxyalkylalkylcellulose; (3) the water-soluble polymer compound is a synthetic polymer compound, a natural polymer polysaccharide, and the like. (1) The paste for printing according to (1) or (2), wherein the natural polymer polysaccharide and a derivative thereof are water-soluble starch derivatives. And (5) a dye comprising the printing paste according to any one of (1) to (4).

Hereinafter, the present invention will be described in more detail.

The printing paste of the present invention contains a water-soluble nonionic cellulose ether and a water-soluble polymer compound. In the present invention, the water-soluble nonionic cellulose ether includes alkyl cellulose and hydroxyalkyl. Cellulose, hydroxyalkylalkylcellulose and the like can be mentioned. Specifically, as the alkylcellulose, methylcellulose, ethylcellulose, etc., as the hydroxyalkylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, etc., as the hydroxyalkylalkylcellulose,
Hydroxypropyl methylcellulose, hydroxyethylmethylcellulose, hydroxyethylethylcellulose and the like can be mentioned.

[0010] The viscosity of the water-soluble nonionic cellulose ether is 5 to 15,000 mPa · s, especially 20 to 20 as the Brookfield viscosity of a 2% by mass aqueous solution at 20 ° C.
8,000 mPa · s is preferred. Viscosity is 5mPa · s
If it is less than 1, thermal gelation is weak, and the viscosity required for the paste for printing cannot be obtained. If it exceeds 15,000 mPa · s, the viscosity of the paste becomes too high, and it is difficult to apply it to the cloth to be dyed. May be.

The thermal gelation temperature of the water-soluble nonionic cellulose ether is preferably 100 ° C. or lower, particularly preferably 90 ° C. or lower. This is because the thermal gel property of the water-soluble nonionic cellulose ether is important for preventing bleeding during steaming.

The compounding amount of the water-soluble nonionic cellulose ether is 1 to 80% by mass, preferably 10 to 60%.
% By mass, more preferably 20 to 40% by mass. If it is less than 1% by mass, the effect of preventing bleeding becomes insufficient, and 8
If it exceeds 0% by mass, the color developability after printing may not be sufficiently exhibited.

In the present invention, examples of the water-soluble polymer compound include a synthetic polymer compound, a natural polymer polysaccharide and a derivative thereof.

Examples of the synthetic high molecular compound include vinyl compounds such as polyvinyl alcohol and polyvinyl methyl ether, acrylic compounds such as polyacrylic acid, polymethacrylic acid, polyacrylate, polymethacrylate and polyacrylamide, and maleic acid. Examples of the polymer include a copolymer of maleic acid, styrene and vinyl acetate, and polyvinyl pyrrolidone and polyethylene oxide.

The natural high molecular polysaccharides and derivatives thereof include, for example, starch (corn starch, rice flour, wheat starch, etc.), processed starch (dextrin, British gum, etc.), starch derivatives (etherified starch, esterified starch, etc.).
Crosslinked starch), natural gums (guar gum, locust bean gum, gum arabic, tragacanth gum, etc.) and derivatives thereof (etherification, esterification, etc.), carboxymethylcellulose, sodium alginate and the like.

Here, among the water-soluble starch derivatives, carboxymethylated starch can be particularly preferably used. There is no particular limitation on the method of carboxymethylation,
The carboxymethylated starch has a degree of carboxymethyl substitution (average number of substituted hydroxyl groups per monosaccharide constituting the polysaccharide) of 0.05 to 0.7, particularly 0.15 to 0.75.
Preferably it is 0.4. When the degree of substitution of the carboxymethylated starch is less than 0.05, the performance of the present invention may not be sufficiently exhibited, and even when the degree of substitution exceeds 0.7, improvement in performance corresponding to the increase in the degree of substitution cannot be expected. There are cases.

The carboxymethylated starch has 3
The Brookfield viscosity of a 5% by weight aqueous solution at 0 ° C. is 10,000 mPa · s or more, especially 30,000 mPa.s.
Pa · s or more is preferable.

The amount of the water-soluble polymer compound is 2
0 to 99% by mass, preferably 40 to 90% by mass, more preferably 60 to 80% by mass is suitable. If the amount is less than 20% by mass, there is a problem that the coloring property after printing is not sufficiently exhibited, and if it exceeds 99% by mass, the effect of preventing bleeding may be insufficient.

The water-soluble nonionic cellulose ether and the water-soluble polymer compound can be used alone or in combination of two or more.

Dyes for which the paste of the present invention is used include:
There is no particular limitation, and various dyes such as, for example, direct dyes, acid dyes, disperse dyes, and reactive dyes are used. When preparing a color paste using these dyes, various known additives can be used in combination, if necessary. These additives include, for example, acids (citric acid, tartaric acid, malic acid, sodium phosphate monobasic, acetic acid, etc.), alkalis (sodium bicarbonate, soda ash, caustic soda, etc.), salts (ammonium sulfate, ammonium tartrate, etc.), reduction prevention. Agents (such as sodium chlorate), dye dissolving agents (such as glycerin, diethylene glycol, and urea), defoamers, penetrants, leveling agents, penetrants, and preservatives.

An example of the method of using the paste of the present invention is as follows. After dissolving the paste of the present invention in water to obtain the original paste, a dye and the above-mentioned additives are added to prepare a color paste. The obtained color paste is printed on the cloth to be dyed by a manual printing method using hand-drawing or pattern paper or a mechanical method such as roller printing, screen printing, transfer printing, jet spray printing and the like. After steaming, the printed cloth can be obtained by desizing and drying by washing with water.

[0022]

EXAMPLES The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited to these examples.

[Examples and Comparative Examples] <Preparation of base paste> The compounds shown in Table 2 were dissolved in water at the compounding ratios shown in Table 1, and various pastes were obtained as 10 mass% base paste. In addition, 65SH is used as a water-soluble cellulose ether.
When -400 was used, it was 7 mass% original glue.

[0024]

[Table 1]

[0025]

[Table 2]

<Preparation of Color Glue> Examples 1 to 4 and Comparative Examples 1 to
A color paste was prepared using the original paste prepared in 4 above.

Disperse dye (Sumikaron Brown S-2BL) 5% by mass Water 32.5% by mass Original paste 60% by mass 30% by mass sodium chlorate 2% by mass Sodium monophosphate 0.5% by mass 100.0% by mass

A screen (15) having a design with this color paste
(0 mesh) on a polyester cloth, and then steamed at 130 ° C. for 20 minutes using an HP steamer. Furthermore, the following items were visually evaluated with respect to the printed cloth obtained by washing with water, soaping and drying. Table 3 shows the results.

<Evaluation Items for Printed Cloth> (1) Color Development (Judgment Criteria) A: The pattern is deeply dyed. ：: The pattern is reasonably deeply dyed. Δ: The pattern is slightly lightly dyed. ×: The pattern is lightly dyed. (2) Leveling property (criterion) ：: Dyeing is uniform and the pattern is clear. ：: dyed uniformly, the pattern is acceptable. Δ: Slightly unevenly dyed, and the pattern is unclear. X: It was dyed unevenly and the pattern could not be expressed. (3) Sharpness (criterion) A: Stained without bleeding, and fine lines of the pattern are clear. ：: dyed without bleeding, and the pattern is acceptable. Δ: Slightly blurred and stained, and fine lines of the pattern were unclear. ×: Bleed and stained, and fine lines of the pattern could not be expressed. (4) Texture (judgment criteria) A: Touching with hand, no stiff feeling. ：: There is almost no rough feeling when touched by hand. Δ: Feel a little rough feeling by touching with hand. ×: Touching with the hand gives a strong stiff feel.

[0030]

[Table 3]

From these results, it can be seen that by using a water-soluble nonionic cellulose ether in combination with a water-soluble polymer compound,
It can be seen that a printed cloth excellent in sharpness, color development and levelness can be obtained.

[0032]

The sizing agent for printing of the present invention has less bleeding after dyeing than the conventional sizing agent, and has the same basic performances as the conventional sizing, such as coloring and leveling properties. It greatly enhances the commercial value of printed fabrics.

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[Procedure amendment]

[Submission date] November 13, 2000 (200.11.
13)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0025

[Correction method] Change

[Correction contents]

[0025]

[Table 2]

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeaki Seki 28-1, Nishifukushima, Oku-ku, Nakakushiro-mura, Niigata Pref. Shin-Etsu Chemical Co., Ltd. 28-1 Nishi-Fukushima, Mura Dai-Chu, Shin-Etsu Chemical Co., Ltd. In-house Nissei Chemical Co., Ltd. 3-29, Mitsutaya Kita 3-chome, Yodogawa-ku, Osaka (72) Inventor Hiroyuki Harada 3-29, Mitsukaya Kita 3-chome, Yodogawa-ku, Osaka, Osaka Reference) 4H057 AA01 BA81 CA33 CB04 CB05 CB08 CC02 DA01 GA04 GA05

Claims (5)

[Claims] 1. A printing paste comprising a water-soluble nonionic cellulose ether and a water-soluble polymer compound. 2. The printing paste according to claim 1, wherein the water-soluble nonionic cellulose ether is an alkyl cellulose, a hydroxyalkyl cellulose or a hydroxyalkylalkyl cellulose. 3. The printing paste according to claim 1, wherein the water-soluble polymer compound is selected from a synthetic polymer compound, a natural polymer polysaccharide and a derivative thereof. 4. The printing paste according to claim 3, wherein the natural polysaccharide and its derivative are water-soluble starch derivatives. 5. A dye comprising the printing paste according to claim 1. Description: