JPS605715B2 - Dry transfer printing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dry transfer printing method, and more particularly to a method for printing cationic dyeable textiles with sharp, uniform coloring.
This invention relates to a dry transfer printing method that can develop colors with good gloss and fastness.

Cationic dyes have poor sublimation properties compared to disperse dyes, so they have not been widely used in dry transfer printing methods. He found that cationic dyes were effective for certain types of polyester fibers, and proposed them. (Tokukan Showa 49-112916, Tokukan Showa 49-
No. 12917). Even with this method, the color development may be insufficient depending on the type of fiber, and it has been proposed to improve this color development by, for example, treating cationic fibers with an ammonium sulfate aqueous solution. (Te phantom ile ChemietandColoris
t6(11), 3rd entry 1974). Alternatively, the coloring properties can be improved by treating the cationically flexible fiber with an ammonium group, an amide group, an acid amide group, or a compound containing a dissociable hydrogen atom in the molecule, or an organic or inorganic acid. It has also been proposed to
1-11 Hei No. 6, JP-A-51-131716). However, it is difficult to achieve uniform color development or dyeing by treating only with the above-mentioned processing agents, and this point has been the biggest drawback in terms of industrial specifications.

The inventors of the present invention should solve the above drawbacks (as a result of various studies),
They found that it is extremely effective to use an aqueous solution containing a coloring treatment agent and a certain type of surfactant, and thus completed the present invention.

That is, the present invention relates to a compound having an ammonium group, an amino group, or an amide group in its molecule, or at least one type of organic acid or inorganic acid (hereinafter referred to as a coloring treatment agent), and a nonionic surfactant or a nonionic surfactant. A transfer sheet containing a cationic dye is prepared after heat-treating a cationic dye beamable fiber product with a composition liquid containing at least one layer of an anionic surfactant (hereinafter referred to as a uniform processing aid) and water. The gist of the present invention is a dry transfer printing method characterized by printing the above-mentioned exquisite products using a method of printing.

According to the present invention, the color development is very clear and uniform,
Furthermore, printed materials with good gloss and fastness can be easily and stably obtained. Therefore, the method of the present invention is industrially extremely useful as a method for printing cationic dye beam-receivable textiles.
The present invention will be explained in detail below.

Examples of the cationically beamable fibers that can be applied to the present invention include acrylic fibers, blended and blended fibers mainly composed of acrylic fibers, and fibers such as cationic dye beamable polyester fibers.

The composition liquid for treating the above-mentioned textile products basically consists of a coloring treatment agent, a uniform treatment aid, and water, preferably 1 part water and 1 part water.
The composition used contains 5 to 100 parts of a coloring treatment agent and 0.5 to 3 parts of a uniform processing aid.

If the amount of coloring treatment agent is less than 5 hours per 1 bath of water, the coloring effect will be small, and if it is more than 100 minutes, the coloring effect will reach equilibrium and the efficiency will decrease.Furthermore, depending on the type of coloring agent, fiber deterioration may occur. This will cause Further, if the uniform processing aid is less than 0.5, stain removal may not be sufficient and uneven dyeing may occur, and a concentration of 3 or more is excessive than necessary. The above-mentioned coloring treatment agent has dissociable ammonium cations, protons, etc. in the molecule, and on the other hand, sodium cations are usually present at the ends of the cationically dyeable fibers.

Therefore, by heating the dyed article in the coloring treatment solution, ammonium cations and protons are ion-exchanged with sodium cations. As a result, the terminal group of the cationic fiber becomes -S03NH4, and as the ammonium is decomposed by the heat during transfer, the terminal becomes very active and dyeing is promoted.

The above-mentioned coloring treatment agents include compounds containing ammonium groups such as ammonium water, ammonium chloride, ammonium acetate, ammonium nitrate, ammonium sulfate, ammonium phosphate, ammonium tate, ammonium tartrate, ammonium sulfamate, methylamine, ethylamine, sulfamic acid, etc. Compounds containing an amino group, compounds containing an acid amide group such as formic acid amide, acetic acid amide, taya acid amide, urea, or inorganic acids such as hydrochloric acid, nitric acid, phosphoric acid, sulfuric acid, formic acid to acetic acid, propionic acid, oxalic acid, Examples include organic acids such as tartaric acid and succinic acid, all of which exhibit remarkable effects.

Next, as uniform processing aids, polyoxyethylene alkyl ethers, polyoxyethylene alkylphenol ethers, polyoxyethylene alkyl esters, sorbitan alkyl esters, polyoxyethylene sorbitan Nonionic surfactants such as alkyl esters, fatty acid salts, higher alcohol sulfate ester salts, liquid fatty oil sulfate ester salts, sulfates of aliphatic amines and aliphatic amides, fatty alcohol phosphate ester salts, fatty acid amides A product containing a nonionic or anionic surfactant containing an anionic surfactant such as sulfates or alkylaryl sulfates and the above-mentioned nonionic surfactant is used.

This uniform processing agent uses the cleaning and penetrating properties of surfactants to remove stains from objects to be dyed, and prevents objects to be dyed from floating in the processing tank. Use as a purpose.

In the present invention, a nonionic surfactant or a surfactant containing a nonionic or anionic surfactant is used since the present invention is applied to materials mainly composed of ionic fibers such as the above-mentioned acrylic fibers. If necessary, an alkaline agent may be further added to the above composition liquid, preferably 0.5 to 3 ta per night of water.

This addition is particularly preferably carried out for the purpose of removing impurities by oxidation for non-aqueous lacquer pastes or objects to be dyed which have significant adhesion of oil or the like. Further, it is desirable that metal ions such as sodium ions do not exist in excess in the composition liquid, and the composition liquid is preferably acidic, neutral, or weakly alkaline with a pH of 8 or less.

This is because the coloring treatment agent converts -S03-Na+ of the fiber end group into -S03-NH4+. That is, Na0 and NH
This is because color development is promoted by causing a 40 ion exchange reaction, and because the color development agent is a salt or acid, it may lose its effect in an alkaline region with a pH of more than 8. Next, in order to heat-treat the cationic dye beam-forming textile product with the above composition solution, for example, heat a container containing the above composition solution, immerse the textile product therein, and then wash and dry it. It is done.

The above heating may be carried out at a temperature exceeding the apparent transition point of the fiber, for example, approximately 80 to 90 do in the case of acrylic fibers, usually preferably about 80 to 100°C, and the treatment time is about 15 to 60 minutes. That's enough. Further, after the heat treatment, it is desirable to slowly cool the dyed object so as not to change its shape. Furthermore, the transfer sheet applied to the present invention is
Contains a cationic dye, and the transfer sheet has a pattern layer on a base sheet such as paper or plastic film using an ink containing a cationic dye and, if necessary, a cationic dye base, a disperse dye, an alkaline agent, etc. be.

Conventionally known methods can be applied to the production of the transfer sheet, and therefore, transfer sheets of various types, such as those having an overcoat layer on the entire surface, can be used. A particularly preferred embodiment is the transfer sheet disclosed in Tokkokuki Sho 49-12916, which provides a dyed article with more uniform color development, brightness, and good color fastness.

Using the above-mentioned transfer sheet, printing of cationic dye beamable textiles can be carried out by a conventional method.
At a temperature of about 80oo to 250qo, about 50 t/c cedar to 2
It is desirable to carry out this by maintaining the pressure at 3 $ec to 9 $ec at 0k9/c.

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

Example 1 First, 7 parts by weight of ethyl cellulose, a cationic dye (
An ink consisting of 6 parts of malachite green, 2 parts of caustic soda, and 85 parts of xylene was printed in an arbitrary pattern on thin paper using a gravure method to prepare a transfer paper.

Next, 30 minutes of ammonium tartrate and 30 minutes of nonionic surfactant (Neugen day 0, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) were added in 1 hour of water.
In the evening, acrylic fibers (Bonnell, manufactured by Mitsubishi Rayon Co., Ltd.) were soaked in a bath containing sodium tripolyphosphate for 3 days (bath ratio,
1:30) After processing at 90°C for 15 minutes, washing with water and drying, sand transfer printing was carried out using the above transfer paper at 20p0, 1.0k9/fence for 3 nights. A good transfer cloth was obtained.

For comparison, when the print was treated with ammonium tartrate only and transfer-printed under the same conditions, some unevenness was observed.
Example 2 2% sulfuric acid in 1 water, nonionic and anionic surfactant (Cot's cla inNAN manufactured by Henkel Hakusuisha) 3
An acrylic fiber product (Beslon Jersey knitted fabric, manufactured by Toho Rayon Co., Ltd.)) was soaked in a solution containing 1:30 (bath ratio, 1:30).
After rinsing with water and drying for 20 minutes, the same transfer paper as in Example 1 was used to perform 4-dimensional interprint printing at 200°C and 1.0k9/m, resulting in clear and uniform results. A transfer cloth with good color fastness was obtained.

For comparison, when the print was treated with sulfuric acid only and transfer-printed under the same conditions, some unevenness was observed. Example 3 40 parts of urea in 1 part of water, a nonionic activator (Sorge MH-
7. Manufactured by Meisei Kagaku Co., Ltd.) Cationic dyed beamable polyester fiber products (Trelons, plain weave: manufactured by Toray Industries, Inc.)
Soaked (Yuhi, 1:30), processed for 9 times 0, 1 time, washed with water and dried, using the same transfer paper as in Example 1, 200
When transfer printing was carried out for 30 seconds at 00, 1.0k9', a clear and uniform transfer cloth with good color fastness was obtained.

Claims (1)

[Claims] 1. A compound containing an ammonium group, an amino acid, or an acid amide group in the molecule, or at least one organic or inorganic acid and a nonionic surfactant or a nonionic or anionic surfactant. A dry transfer printing method characterized in that a cationic dye-dyeable textile is heat-treated with a liquid composition containing at least one of the above and water, and then the textile is printed using a transfer sheet containing a cationic dye. 2. The dry transfer printing method according to claim 1, further comprising an alkaline agent in the composition liquid. 3. The dry transfer printing method according to claim 1, wherein the heat treatment conditions are 80 to 100°C for 15 to 60 minutes.