JPH09194304A - Antibacterial treating method of textile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide antibacterial treatment excellent in durability and uniform dyeing on synthetic textile by adding a specific organic antibacterial agent to dye bath when dyeing a synthetic textile such as polyester, etc. SOLUTION: A synthetic fiber such as polyester, nylon fiber, acetate fiber, etc., is dispersedly dyed or treated with a dispersing fluorescent brightener in the presence of an antibacterial agent having solubility in water of less than 40ppm. One kind or a mixture of two or more kinds of the compounds of formula I-V is used as the antibacterial agent. The organic antibacterial agent is preferably fine particle having average particle diameter less than 3μm and herewith the penetrating properties is improved. High temperature and high pressure dyeing or carrier dyeing is preferred as the dyeing method in this process. The antimicrobial activity obtained by this process is excellent in resistance to washing, thus expected to contribute to dyeing industry as saving energy is required nowadays.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for simultaneously subjecting synthetic fibers such as polyester fibers to antibacterial treatment and dyeing. More specifically, it relates to a method of simultaneously subjecting synthetic fibers such as polyester fibers to antibacterial treatment with good durability and uniform dyeing.

[0002]

2. Description of the Related Art Antibacterial treatments for textiles such as clothing, curtains, sheets, towels and cloths for building interiors have been known for a long time. Recently, MRSA nosocomial infection has been highlighted, and the demand for antibacterial treatment has increased. Also, in recent years, the health of general consumers,
There is a growing interest in hygiene, and along with this, there is a growing demand for hygienic and healthy products that do not cause mildew or foul odors even for textile products for clothing, especially sports clothing, raincoats, towels and socks. ing.

[0003] For the antibacterial treatment of textiles, a synthetic fiber spinning stock solution is spun, and a raw yarn processing method in which an antibacterial agent is kneaded and spun at the manufacturing stage, and a dipping, padding method and spray spraying of textiles. And other post-processing methods such as coating methods. The yarn processing method is advantageous when a large amount of the same kind is produced, but adding an antibacterial agent to the spinning dope
This is not preferable because it may impair the spinning characteristics. Further, cleaning of the spinning device when switching the spinning dope is not easy. On the other hand, the post-processing method is advantageous because if the antibacterial agent is firmly adhered to the fiber, it can be easily processed even in small-lot production of a wide variety of products, and the change and quantity of the antibacterial agent can be easily dealt with according to the purpose. There are many research reports on both the yarn processing method and the post-processing method, and patents have been filed.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a method for simultaneously dyeing and antibacterial treatment of synthetic fibers. The present invention also provides a method for simultaneously performing antibacterial treatment with excellent durability and fast dyeing on synthetic fibers. The term “antibacterial treatment” as used in the present invention is used as a word including the meaning of antifungal treatment. The present inventors have arrived at the present invention as a result of various studies in order to solve the above problems.

[0005]

That is, the gist of the present invention is a method of dyeing synthetic fibers with a disperse dye or a dispersive optical brightener in the presence of an antibacterial agent having a water solubility of 40 ppm or less. Hereinafter, the present invention will be described in detail. The target fibers of the present invention are synthetic fibers such as polyester, nylon and acetate, and mixed fibers of these synthetic fibers and other fibers such as natural fibers. The antibacterial agents used are limited to organic ones having a water solubility of 40 ppm or less. Specifically, an antibacterial agent represented by the following structural formula is exemplified.

[0006]

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[0007]

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The present invention is not limited to these antibacterial agents. The point is that the condition is that the solubility in water is 40 ppm or less.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION These antibacterial agents are atomized to be used as particles having an average particle size of 3 μm or less in order to improve penetration into synthetic fibers. Usually, as in the production of disperse dyes, colloid treatment is carried out by grinding with an anionic surfactant or a nonionic surfactant using a ball mill, a sand mill or a pearl mill. The antibacterial agents can be used in combination of plural kinds.

The dyeing method applied is preferably a high temperature and high pressure dyeing method or a carrier dyeing method. In this case, the bath ratio is 1: 3 to 1:50 and the pH is in the range of 2 to 12, and conditions suitable for the dye used are selected. Alternatively, a method in which a dye is padded from a short bath and then cured is also adopted.
As the disperse dye and the dispersive optical brightening agent used, all commonly known ones can be used. It is appropriately selected and used according to the hue and density.

In the present invention, the disperse dye dyeing and the antibacterial agent treatment can be successfully carried out at the same time because the behavior of the disperse dye and the organic antibacterial agent having a solubility in water of 40 ppm or less is similar in the dyeing bath. It is thought to be because it is. Particularly, by grinding the antibacterial agent to an average particle size of 3 μm or less, disperse dye dyeing and antibacterial agent treatment are more advantageously performed. Also, by selecting and using a carrier, dyeing and antibacterial treatment can be more efficiently performed.

[0012]

EXAMPLES The present invention will be described more specifically with reference to the following examples, but the present invention is not limited to these examples. Examples 1 to 8 (1) Colloidization treatment of antibacterial agent 50g of antibacterial agent shown in Table-1, 20g of formalin condensate of naphthalene sulfonic acid and 30g of sodium lignin sulfonate were slurried with 300g of water, and then glass beads were used. Wet-pulverized, average particle size 1μ
A colloidal composition of m was obtained.

(2) Simultaneous dyeing treatment Anthraquinone type disperse dye Dianix Blue A
c-E (manufactured by Daistar Japan Co., Ltd. (Dianix
(Registered trademark)) at 1% (owf) and a colloidal antibacterial agent in an amount shown in Table 1 with a bath ratio of 1:20, pH.
5. The polyester woven fabric was dyed according to a conventional method under the conditions of a dyeing temperature of 130 ° C. and a dyeing time of 60 minutes. After dyeing, washing with water, reduction washing, washing with water and drying were performed to obtain a clear blue dyed fabric.
Each of the obtained dyed fabrics was subjected to a mildew proof test according to JIS Z 2911, and the results shown in Table 1 were obtained.

Comparative Examples 1 and 2 Tables having a solubility in water of 40 ppm or more as an antibacterial agent
Dyeing was performed according to Examples 1 to 8 except that the one described in 1 was used. Similarly, the test results according to JIS Z 2911 are shown in Table-1.

[0015]

[Table 1]

Example 9 In place of the anthraquinone type disperse dye of Example 1, a dispersible optical brightener Mikawhite ATN conc. (Mitsubishi Chemical Corporation) 1% o. w. f. Except used
Dyeing was carried out according to Example 1. Anti-mildew effect is J
According to IS Z 2911, the evaluation was 3, which was good.

The molds used in the test are the following four types. Aspergillus niger FERM S-1 Penicillium citrinum FERM S-5 Ketomium globosum FERM S-11 Milotesium bercaria FERM S-13

According to the present invention, the synthetic fiber can be subjected to antibacterial processing simultaneously with dyeing. The obtained antibacterial action is also excellent in washing resistance, and it is a great contribution to the dyeing industry at the present time when energy saving is demanded.

Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display area A01N 43/52 A01N 43/52 43/78 43/78 Z 43/80 102 43/80 102 47/04 101 47 / 04 101 D06M 13/355 D06M 23/08 23/08 D06P 3/54 Z D06P 3/54 5/00 A 5/00 D06M 13/38 (72) Inventor Junichiro Nakae 1170- Ishihata, Mizuho-cho, Nishitama-gun, Tokyo 1 Sengkawa KB9 Bio Research Institute (72) Inventor Kotaro Honda 5-6-20 Nakasu, Hakata-ku, Fukuoka City, Fukuoka Prefecture Mitsubishi Chemical Corporation Kyushu Branch

Claims (3)

[Claims] 1. A synthetic fiber comprising an organic antibacterial agent having a solubility in water of 40 ppm or less in a dyeing bath when the synthetic fiber is dyed with a disperse dye or a dispersible optical brightening agent. A method of antibacterial treatment at the same time as dyeing. 2. The method for antibacterial treatment at the same time as dyeing synthetic fibers according to claim 1, wherein one or a mixture of two or more compounds represented by the following formulas [1] to [VIII] is used as an antibacterial agent. Embedded image Embedded image 3. The method for antibacterial treatment at the same time as dyeing the synthetic fiber according to claim 1, wherein the organic antibacterial agent has an average particle size of 3 μm or less.