JPH09103472A - Composition having deodorant function and fiber cloth formed by using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an extremely outstanding deodorant function by preparing a deodorant compsn. from a compsn. contg. a noble metal zeolite catalyst, metal oxide and amphoteric metal hydroxide. SOLUTION: This compsn. having the deodorant function to be used for processing of powdery deodorants and deodorant filters of air conditions, air cleaners, etc. has the noble metal zeolite catalyst, the metal oxide and the amphoteric metal hydroxide and is more preferably provided as the fiber cloth contg. the fibrous materials imparted with the compsn. contg. the above described components. The noble metal zeolite catalyst is formed by incorporating noble metals, such as platinum and palladium into zeolite. A platinum zeolite catalyst is used for the catalyst in terms of the deodorant effect. Porous silicon dioxide, titanium oxide, etc. which deodorize basic materials, such as ammonia, and zinc oxide, magnesium oxide, barium oxide, aluminum oxide, etc. which deodorize acidic materials, such as org. acids, are used in combination as the metal oxide.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a powdered deodorant,
Deodorant filters for air conditioners and air purifiers, deodorant paints,
The present invention relates to a composition having a deodorant function, which can be used for processing a deodorant fiber cloth or the like. The present invention also relates to a textile fabric having a deodorant function, which can be widely applied to interiors such as clothes and curtains, sanitary materials, insoles and liners for shoes, filters for air conditioners and air purifiers, etc. Is.

[0002]

2. Description of the Related Art Heretofore, products having a deodorizing function have been known in the fields of textiles, paper, paints and the like. But,
Most of the deodorant materials used for this purpose are those due to chemical adsorption (neutralizing action) or physical adsorption, except for a very small portion, and they do not exhibit complete deodorant properties.

For example, acidic titanium oxide, aluminum sulfate and the like are effective in deodorizing basic ammonia and the like, but are ineffective against neutral malodor. Also,
Zinc oxide, which is basic in itself, can neutralize acidic malodors such as methyl mercaptan and hydrogen sulfide to convert them into odorless substances, but is ineffective against neutral malodors. Furthermore, the deodorizing method based on the neutralizing action using these acids and bases cannot exert its effect when the deodorant itself is saturated. Therefore, these deodorants have a limited ability to treat malodors, yet act only on basic or acidic substances, and have no effect on neutral malodors or malodors composed of various components. I can't show it.

There are also deodorants utilizing physical adsorption such as activated carbon and silica. These collect the malodorous components in the deodorant,
Although it reduces the ambient concentration, it does not become an essential solution because the total amount of malodorous components does not decrease.
The function required of deodorants is, ideally, to break down malodorous components into completely odorless components, and only a few chemicals that act in this way are known to date. Such a chemical is, for example, iron / phthalocyanine. This substance which enzymatically oxidizes and decomposes is produced by being kneaded into rayon fiber, and is used, for example, in futon cotton, and it has been confirmed that ammonia is deodorized by this. It is also known that hydrogen sulfide is oxidized to sulfur, mercaptan to disulfide, aldehyde to carboxylic acid, and amine to ketone and ammonia. However, some of these decomposition products have an odor, and these deodorants are not effective for all malodors. That is, they are not effective in removing tobacco odor and sweat odor.

Complex malodors, such as tobacco combustion gases, contain thousands of constituents, and deodorizing them has hitherto been technically impossible. Also,
Isovaleric acid, which is the main component of human sweat, and the odor component of axillary odor, are a mixture of several types of lower fatty acids, and it was difficult to completely deodorize them. The malodor in real life is an odor mixed with complicated components as described above, and it is rare that it consists of a single component like the four major malodors of the law. It was difficult to get the effect.

[0006]

Therefore, the present invention is intended to provide a composition having an extremely excellent deodorizing function, which can eliminate the above-mentioned conventional problems. Further, the present invention is intended to provide a fiber cloth having an excellent deodorizing property.

[0007]

In order to solve the above problems, the present invention provides a composition containing a noble metal zeolite catalyst, a metal oxide and an amphoteric metal hydroxide. The present invention
Also provided is a fiber cloth containing a fiber material provided with a composition containing a noble metal zeolite catalyst, a metal oxide and an amphoteric metal hydroxide.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The noble metal zeolite catalyst used in the present invention refers to a zeolite on which a noble metal such as platinum or palladium is supported in a range of 0.01 to 10%. As the noble metal zeolite catalyst, a platinum zeolite catalyst is more preferably used from the viewpoint of deodorizing effect.

It is believed that the mechanism of action of this catalyst is to reduce the odor by performing an oxidizing action at room temperature and decomposing the malodorous component in the tobacco combustion gas, for example. Furthermore, a bactericidal action due to the oxidative action is also observed. The decomposition of organic substances by the oxidizing action of noble metal zeolite catalysts has been known in the past. However, its use is limited to heating conditions, and it has been used for far-infrared heaters, panel heaters, and deodorants in refrigerators until now. -ing For example, JP-A-4-35451
No. 5 discloses an example in which a noble metal such as platinum or palladium supported on alumina or silica is attached to a heater part capable of heating up to 600 ° C., which utilizes the deodorizing action by oxidative decomposition at high temperature. The thing
It is not used at room temperature.

As a deodorizing catalyst capable of oxidative decomposition at room temperature, a honeycomb type catalyst composed of a manganese catalyst and a gold zeolite catalyst is formed in two layers.
265153, this composition is quite different in composition from the composition of the present invention. That is, the present invention is the first to discover a means capable of decomposing a bad odor containing thousands of kinds of organic substances such as cigarette odor at room temperature.

Tobacco combustion gas contains more than several thousand neutral organic compounds including basic and acidic organic substances. Therefore, the bad smell of tobacco combustion gas is an odor in which a large number of organic substances are mixed. It is thought that it is almost impossible to make a mixture of these organic substances odorless, but
In the present invention, a composition obtained by adding a metal oxide and an amphoteric metal hydroxide to a noble metal zeolite catalyst reduces tobacco combustion gas by oxidative decomposition and chemisorption (neutralizing effect), and significantly reduces the malodor of tobacco. It was unexpectedly found that they could do it.

That is, the noble metal zeolite catalyst alone has the effect of obviously reducing the malodor of the tobacco combustion gas, but its degree is not practically satisfactory. However, in the present invention, this problem could be solved by using a metal oxide and an amphoteric metal hydroxide in combination with the noble metal zeolite catalyst. Examples of the metal oxide useful in the present invention include porous silicon dioxide and titanium oxide that deodorize (chemically adsorb) basic substances such as ammonia, but deodorize acidic substances such as organic acids ( Chemisorption) zinc oxide, magnesium oxide, barium oxide,
You may use aluminum oxide etc. together. Of course, there is no problem in using two or more kinds of metal oxides in combination.

Further, in the present invention, an amphoteric metal hydroxide is used together with the above components. Specific examples of such amphoteric metal hydroxides include aluminum hydroxide and zinc hydroxide. Although the deodorizing effect of the tobacco combustion gas is recognized even when the precious metal zeolite catalyst is used in combination with only the metal oxide, the larger deodorizing effect can be obtained by further using the amphoteric metal hydroxide in combination therewith. This is probably because acidic substances such as organic acids are more easily chemisorbed by the amphoteric metal hydroxide.

The composition of the present invention can be used in various ways. For example, according to the present invention, platinum zeolite,
A composition containing porous silicon oxide and aluminum hydroxide may be used as a deodorant in powder form, may be used in combination with a resin to form a deodorant paint, or may be fixed by using a resin binder in combination with a fiber material. It can be used as a fiber cloth having a deodorizing function.

The particle size of these compositions is preferably 10 μm or less, and they can be used in the form of powder or fine particles dispersed in a solvent or water. Next, a fiber cloth using the composition of the present invention will be described. Textile materials useful in the present invention include polyester, nylon,
Synthetic fibers such as acrylic and recycled fibers such as rayon,
Mention may be made of natural fibers such as cotton, wool, silk, and mixed fibers or spun products thereof, and their forms are also yarns,
It may be a woven fabric, a knitted fabric, a non-woven fabric or the like, and may be one that has been subjected to usual dyeing and printing. Further, it may be in a state like cotton.

The composition of the present invention is originally in the form of powder solid, but when it is applied to a fiber material and fixed, it is used in the form of being dispersed in water or a solvent together with a resin binder. It is convenient to use. As the resin binder, water-soluble, water-dispersed or solvent-soluble resins can be used. Specifically, melamine resin,
Epoxy resin, urethane resin, acrylic resin, fluororesin, etc. are not particularly limited.

As a method for fixing the composition to the fiber material, for example, the composition of the present invention is pulverized into fine particles and then made into an aqueous dispersion, and then this aqueous dispersion is mixed with a water-dispersible resin binder or water-soluble solution. It is possible to employ a method in which a resin solution is prepared by mixing it with a volatile resin binder, the fiber material is impregnated with this resin solution, squeezed with a mangle roll and dried.

It is also possible to thicken an aqueous liquid containing the composition of the present invention and a resin binder and coat it with a known device such as a knife coater. Alternatively, a composition obtained by pulverizing the composition of the present invention into fine particles is dispersed in a solvent together with a solvent-soluble resin binder, further diluted with a solvent to an appropriate viscosity, and a fiber material is impregnated with the obtained resin liquid. A method of squeezing with a mangle roll and drying can be used. Further, the resin liquid can be coated on one side of the fiber material by using a known device such as a knife coater, or can be attached to one or both sides of the fiber material by using a gravure roll.

The amount of the composition of the present invention attached to the fiber cloth is preferably 0.1 g / m ² or more. If the amount of adhesion is too small, the speed of deodorization is low and the practicality is lost. Further, if the amount of adhesion is too large, there is no problem in that the deodorizing effect becomes high, but depending on the use of the fiber cloth, the texture may be extremely hard and the commercial value may be lost.

The deodorant composition and fiber cloth obtained by the present invention are not only ammonia, hydrogen sulfide, methyl mercaptan and trimethylamine, which are stipulated in the four major odors of the law, but also tobacco, which has been considered to be extremely difficult in the past. In addition to deodorizing the bad odor generated from combustion gas, it also has a significant effect on deodorizing isovaleric acid, which is the odor component of sweat. Since these have a deodorizing effect on the tobacco combustion gas containing a myriad of components, it is natural that they have an effect on a wide range of difficult-to-treat malodors. Physical adsorption with an adsorbent material such as activated carbon has a limited adsorption capacity, and with the neutralization mechanism, the performance is lost when all the neutralizing agent is consumed, whereas the fiber cloth obtained by the present invention has a depleted capacity. The odor mechanism is a combination of chemical decomposition and ionic adsorption (neutralization), and has a long-lasting deodorizing effect.

[0021]

The present invention will be further described below with reference to examples. In addition, "part" shows a weight part in an example. Further, in these examples, the powdery deodorant composition was pulverized with a ball mill for 48 hours in advance, and particles having a particle diameter of 10 μm or less were fractionated and used. For other materials, the particle diameter was described. .

Example 1 A two-component curable urethane paint having the following composition was prepared. Mitec GP105A 100 parts (Mitsubishi Kasei, polyisocyanate) Modified castor oil polyol 260 parts 0.1% platinum-supported zeolite 20 parts Sylysia 430 30 parts (porous silicon dioxide, Fuji Silysia Chemical) K fresh MZO 20 parts (oxidation) Zinc, made by Teika) 70 parts of aluminum hydroxide (particle size 1μ, made by Sumitomo Chemical) 200 g of the above two-component curable urethane paint on an aluminum plate
/ M ² and then put in a drier and dried at 80 ° C. for 3 minutes. Then, using an aluminum plate treated with this composition, a deodorant test of tobacco combustion gas was conducted as follows.

The filter cigarette was lit and placed vertically on a glass plate using double-sided adhesive tape. 30
A 0 ml polyethylene bag was placed over this and the combustion gases were collected for about 1 second. Next, a treated aluminum plate having a size of 10 cm × 10 cm was put in and hermetically sealed. For comparison, an untreated aluminum plate was similarly tested.

After 1 hour, the odor in the polyethylene bag was sensory judged. Tobacco odor was clearly reduced on the treated aluminum plate side, while a strong cigarette odor was found on the untreated aluminum plate side. Example 2 An aqueous paint having the following composition was prepared.

In order to disperse the deodorant component in the resin, it was treated in a ball mill for 24 hours and then used in the test. Deodorant component 0.1% Platinum-supported zeolite 10 parts Sylysia 430 35 parts (porous silicon dioxide, manufactured by Fuji Silysia Chemical) Aluminum hydroxide 35 parts (particle size 8μ, manufactured by Sumitomo Chemical) Water-based acrylic resin (solid content 50%) 100 parts Poise 521 1 part (dispersant, manufactured by Kao) Water 50 parts The above water-based paint was applied on an aluminum plate in an amount of 150 g / m ² , then put in a dryer and dried at 80 ° C. for 3 minutes. Using the treated aluminum plate, a deodorant test of tobacco combustion gas was conducted as follows.

The filter cigarette was lit and placed vertically on a glass plate using double-sided adhesive tape. 30
A 0 ml polyethylene bag was placed over this and the combustion gases were collected for about 1 second. Next, a treated aluminum plate having a size of 10 cm × 10 cm was put in and hermetically sealed. For comparison, the untreated aluminum plate was similarly tested.

After 1 hour, the odor in the polyethylene bag was sensory judged. Tobacco odor was clearly reduced on the treated aluminum plate side, while a strong cigarette odor was found on the untreated aluminum plate side. Example 3 A composition was prepared by blending the following deodorant ingredients.

0.5% Platinum-supported zeolite 20 parts Sylysia 430 20 parts (porous silicon dioxide, manufactured by Fuji Silysia Chemical Ltd.) Aluminum hydroxide 60 parts (particle size 8μ, manufactured by Sumitomo Chemical Co., Ltd.) Tobacco combustion in a 300 ml Erlenmeyer flask. After collecting the gas for 5 seconds, 1 g of the powder of the above composition was charged and the mixture was sealed.
Then, the Erlenmeyer flask was shaken for 10 seconds to come into contact with the gas.

For comparison, when the composition powder was not added,
Also, the same test was performed when 1 g of granular palm shell activated carbon (Shirasagi Gc4 / 8, manufactured by Takeda Pharmaceutical Co., Ltd.) was used. After standing for 20 minutes, the odor in the flask was judged. The results are shown in Table 1 below.

[0030]

[Table 1]

Example 4 A non-woven fabric made of 100% polyester and having a basis weight of 50 g / m ² was used for the test. A resin liquid containing a deodorant component having the following composition was prepared, and dispersed by a ball mill for 10 hours. Deodorant component 0.1% Platinum-supported zeolite 5 parts Sylysia 730 35 parts (porous silicon dioxide, manufactured by Fuji Silysia Chemical Ltd.) Aluminum hydroxide 70 parts (particle size 1 μ, manufactured by Sumitomo Chemical) Acrylic resin (solid content 20%) 100 Parts Toluene 200 parts Ethyl acetate 10 parts Coronate HL (isocyanate cross-linking agent) 1 part The above resin solution was applied to both sides of a non-woven fabric using a gravure coater in an amount of 30 g / m ² , respectively, and then 130
Dry at 2 ° C. for 2 minutes. Using the obtained treated nonwoven fabric, a deodorant test for tobacco combustion gas was conducted as follows.

The tobacco was lit and placed vertically using double-sided adhesive tape. A 300 ml Erlenmeyer flask was put on this, and the combustion gas was collected for about 5 seconds. Then 10
A treated non-woven fabric having a size of cm × 10 cm was placed in a flask and tightly stoppered. For comparison, the untreated nonwoven was also tested by the same procedure. After 30 minutes, the odor of the flask was sniffed. As a result, the untreated non-woven fabric side had a tobacco odor, whereas the treated non-woven fabric side had almost no odor. Further, when the non-woven fabric was taken out and the odor attached thereto was judged, the untreated one had a strong tobacco odor, whereas the treated one had almost no odor.

Table 2 shows the results.

[0034]

[Table 2]

Example 5 Using the treated non-woven fabric prepared in Example 4, a deodorizing test of ammonia, trimethylamine and isovaleric acid was conducted as follows. 10 x 1 in a 300 ml Erlenmeyer flask
A 0 cm treated non-woven fabric was put therein, the above-mentioned malodorous component was added thereto, the bottle was tightly capped, left for 5 minutes, and then the gas concentration was measured with a Gastec detector tube.

The results are shown in Table 3. It is recognized that the treated non-woven fabric is excellent in the effect of removing each malodor.

[0037]

[Table 3]

[0038]

According to the present invention, a composition having an excellent deodorizing property is provided. This composition is in powder form and can be used for a spray type deodorant, a deodorant filter and the like.
Further, the fiber fabric of the present invention is useful for deodorizing filters, clothes, interiors such as curtains, sanitary materials, shoe liner materials, and the like.

Claims (5)

[Claims] 1. A deodorizing composition comprising a noble metal zeolite catalyst, a metal oxide and an amphoteric metal hydroxide. 2. The composition of claim 1, wherein the noble metal zeolite catalyst comprises platinum. 3. The composition according to claim 1, wherein the metal oxide contains at least one component that deodorizes a basic substance. 4. The composition according to claim 1, wherein the metal oxide contains at least one component that deodorizes an acidic substance and at least one component that deodorizes a basic substance. Stuff. 5. A fiber cloth containing a fiber material provided with a composition containing a noble metal zeolite catalyst, a metal oxide and an amphoteric metal hydroxide.