JPS6385177A - Production of deodorizing cloth - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for producing a fabric having deodorizing properties, and more specifically to a method for producing a fabric having deodorizing properties, and more specifically, a method for producing a fabric having deodorizing properties, and more specifically, a method for producing a fabric having deodorizing properties. The present invention relates to a method of producing deodorizing fabrics by treating the fabrics with a combined emulsion.

(Prior Art) Bad odors that are common in daily life are representative of sensory pollution that directly and indirectly harm the human body.

Foul odors include nitrogen compounds such as ammonia and amines, hydrogen sulfide, sulfur compounds such as mercaptans, aldehydes, ketones, fatty acids, and hydrocarbons.Based on odor prevention methods, ■Ammonia ■Methyl mercaptan
■Hydrogen sulfide ■Methyl sulfide ■Trimethylamine ■Acetaldehyde ■Styrene ■Methyl disulfide is designated and regulated as a specific malodorous substance. Various adsorbents are used to remove these odors. For example, inorganic adsorbents such as activated carbon, silica gel, zeolite, activated clay, and molecular sieves, ion exchange resins, and liquid adsorbents whose main components are extracts of plants of the Camellia family are well known. Products into which exchange groups, anion exchange groups, etc. are introduced are also known.

(Problems to be Solved by the Invention) However, many of these adsorbents are only effective against bad odors of specific substances.

An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to provide a method for producing a fabric that has excellent deodorizing properties against various bad odors.

(Means for Solving the Problems) As a result of extensive studies to achieve the above object, the inventor of the present invention has found that fabrics treated with a specific polymer emulsion have an excellent deodorizing effect. Heading The present invention has been arrived at.

That is, the present invention provides a method for producing a deodorizing fabric, which comprises treating the fabric with an emulsion of a bonded copolymer of an unsaturated carboxylic acid and/or its anhydride with ethylene, and then heat-treating the fabric. be.

In the present invention, examples of unsaturated carboxylic acids and/or anhydrides thereof that form a copolymer with ethylene include acrylic acid, methacrylic acid, maleic acid, itaconic acid, citraconic acid, hymic acid, bicyclo(2,2, 2) Oct-5-ene-2゜3-dicarboxylic acid, 1,2.3,
4.5,8,9゜10-octahydronaphthalene-2,
3-dicarboxylic acid, bicyclo(2,2,1)octa-7
-ene-2,3,5,6-tetracarboxylic acid, 7-oxabicyclo(2,2,1) to but-5-ene-2゜3-
Examples include dicarboxylic acids. Among these, particularly preferred are acrylic acid and methacrylic acid.

The content of carboxyl groups in the direct copolymer of unsaturated carboxylic acid and/or its anhydride and ethylene is 0.2 meq/g to 5 meq/g, preferably 0.
．． 3 meq/g to 5 meq/gs, more preferably 0.4 meq/g to 4 n+eq/g.

The direct copolymer of ethylene with an unsaturated carboxylic acid and/or its anhydride is applied to the fabric in the form of an emulsion. The copolymer concentration in the emulsion is 10-75
Approximately % by weight is suitable. Further, in order to form an emulsion, any emulsifier can be used, and other functional agents such as antistatic agents and flame retardants may be added. Furthermore, it is desirable to mix copper powder into the emulsion and apply it to the fabric, as this further improves the deodorizing effect and also produces a bactericidal effect. The copper powder used in this case preferably has a particle size of 1 to 100 μm.

The above copolymer emulsion is applied to the fabric by a padding method, a banking method, a spraying method, or the like. In this case, it is preferable to perform the emulsion treatment so that the amount of the copolymer adhered to the fabric is 8% by weight or more, and when copper powder is used in combination, the amount of copper powder adhered to the fabric is 1% by weight or more.

Next, heat treatment is applied to the emulsion-treated fabric,
The above copolymer is fixed to a fabric. The heat treatment may be either warm heat or dry heat, and the heat treatment temperature is preferably higher than the melting point of the copolymer and lower than the melting point +100°C.

The fabrics used in the present invention include woven fabrics, knitted fabrics, non-woven fabrics, etc., and the fibers constituting these fabrics include cotton, wool,
Any fiber such as rayon, acetate, polyamide fiber, polyester fiber, vinyl polymer fiber, etc. can be used.

(Function) The deodorizing mechanism of the deodorizing fabric obtained by the present invention is not a physical adsorption deodorization like conventional activated carbon (or a direct copolymerization of unsaturated carboxylic acid and/or its anhydride with ethylene). Since it is based on chemical deodorization through coalescence, the deodorizing ability is significantly improved.

In particular, when a copolymer of an unsaturated carboxylic acid and/or its anhydride and ethylene is used together with copper powder, the copolymer may contain nitrogen compounds such as ammonia and trimethylamine, and aliphatic compounds such as n-butyric acid. For deodorizing the underlying odor,
Further, since copper powder is effective in deodorizing bad odors caused by sulfur compounds such as hydrogen sulfide and methyl mercaptan, it can exert a deodorizing effect on almost all kinds of bad odors.

Copper powder also has a bactericidal effect and has the additional effect of suppressing the generation of bad odors.

The copolymer of unsaturated carboxylic acid and/or its anhydride and ethylene has not only a deodorizing effect but also a binder effect, and can be used as various binders.

(Examples) Hereinafter, the present invention will be explained in detail with reference to Examples, but the present invention is not limited to these in any way.

In addition, as an evaluation of the deodorizing property, the deodorizing rate was determined by the following method.

That is, a 10 g fabric sample is placed in a desiccator 41, the pressure is reduced with an aspirator, and a certain amount of measurement gas (liquid) is injected. Thereafter, the inside of the desiccator is returned to atmospheric pressure, and the gas concentration at that time is set as the initial gas concentration. The initial concentration is 20
Adjust so that it becomes 0 to 300 ppm. Furthermore, the gas concentration in the desiccator after 3 hours was measured, compared with the initial concentration, and the deodorization rate was calculated using the following formula.

Example 1 A 100 denier 24 filament polyester long fiber yarn was knitted into a Queen's cord structure with 28G, subjected to high-pressure dyeing in a conventional manner, and then finished with ethylene-acrylic acid copolymer (Mitsubishi Yuka (manufactured by Im: Yucalon E)
A padding treatment was performed using an emulsion (copolymer concentration 20% by weight) of AA A-201M) using a dip coater method, and then a dry heat treatment was performed at 150°C to create an interlining.

In this case, the amount of diethylene/acrylic acid copolymer attached to the fabric was varied as shown in Table 1.

The results of measuring the deodorizing rate of the obtained fabric (interlining) are shown in Table 1, and it has excellent deodorizing properties, especially the adhesion of ethylene/acrylic acid copolymer. The amount is 8
A remarkable deodorizing effect was observed when the amount was greater than % by weight.

(This page, blank space below) Table 1: This interlining has excellent deodorizing properties, as well as moderate tension and
Because it has a waist, sewn products using this interlining material can prevent bad odors and become comfortable clothing. Moreover, this interlining also had washing resistance.

Example 2 A 200 denier 48 filament polyester long fiber yarn was knitted into a Queen's cord composition with 18G, beam high-pressure dyed using a conventional method, and furthermore, upon finishing setting, an ethylene-acrylic acid copolymer (Mitsubishi Yuka Co., Ltd.) was used. A padding treatment was performed by a dip coater method using an emulsion containing copper powder (manufactured by Yucalon EAA A-201M) and an average particle size of 20 μm, and then a dry heat treatment was performed at 150°C.

In this case, the ethylene/acrylic acid copolymer concentration and copper powder concentration of the emulsion were varied, and the amounts of the copolymer and copper powder deposited on the fabric were changed as shown in Table 2.

. The deodorization rate of the obtained base fabric was measured. The results are shown in Table 2, and it has excellent deodorizing properties.
In particular, the adhesion amount of ethylene/acrylic acid copolymer is 8% by weight.
As described above, a remarkable deodorizing effect was obtained when the amount of copper powder deposited was 1% by weight or more.

When this base fabric was used as a shoe sole mat, it was found to have an excellent deodorizing effect.

In addition, all of these base fabrics have washing resistance and antibacterial properties, and for a sample with an ethylene/acrylic acid copolymer coating of 30% by weight and a copper powder coating of 10% by weight, When a test was conducted to measure the number of bacteria over time (measured using physiological saline at room temperature), the following results were obtained.

In addition, no occurrence of black mold or white fungus was observed.

(Effects of the Invention) The fabric of the present invention exhibits excellent deodorizing performance against various bad odors, and especially when used in combination with copper powder, it also has a bactericidal effect, making it suitable for sanitary materials such as sanitary napkins and disposable diapers. , various filters, futon cotton, padded cotton, various felt 11, blankets,
Carpet base materials, interior materials for buildings and automobiles, shoe insoles, linings, bed mats, refrigerator deodorizers, bras, girdles, body suits, various pads such as bust pads, hip pads, side bands, and sleeping wear. It can be effectively used as interlining, various deodorizing materials for various clothing, etc.

Further, the fabric of the present invention does not lose its deodorizing performance even after repeated washing, and can release odors by washing and drying, so it can be used repeatedly.

Claims (1)

[Claims] 1. Production of a deodorizing fabric, characterized in that the fabric is treated with an emulsion of a direct copolymer of an unsaturated carboxylic acid and/or its anhydride and ethylene, and then heat treated. Law. 2. The method for producing a deodorant fabric according to claim 1, wherein the unsaturated carboxylic acid is acrylic acid. 3. A method for producing a deodorizing fabric according to claim 1 or 2, wherein the copolymer emulsion is treated by mixing copper powder.