JP6771176B2 - Mold resistant deodorant - Google Patents

Description

The present invention relates to an antifungal deodorant.

It is known that crushed rhyolite welded tuff has excellent humidity control properties (Non-Patent Document 1). Patent Document 1 discloses a plastering wall agent composition having excellent humidity control properties, which contains a pulverized product of rhyolite welded tuff. However, for rhyolite welded tuff, properties other than humidity control have not been investigated.

Japanese Patent Application No. 2014-218882

University of Tsukuba "Science Bud" 2012

An object of the present invention is to provide a mold-resistant deodorant containing rhyolite welded tuff, which has high mold resistance and an excellent deodorizing effect, and a molded product containing the mold-resistant deodorant. There is.

As a result of diligent research in view of the above problems, the present inventors have found that a mold-resistant deodorant having high mold resistance and an excellent deodorizing effect can be obtained by containing rhyolite welded tuff. We have found and completed the present invention.

That is, the mold-resistant deodorant of the present invention contains rhyolite welded tuff distributed from Takasago City, Hyogo Prefecture to Kasai City, Hyogo Prefecture . Preferably, it may further contain titanium apatite.
In addition, the molded product of the present invention contains the above-mentioned mold-resistant deodorant.

According to the present invention, by containing rhyolite welded tuff, a mold-resistant deodorant having high mold resistance and an even more excellent deodorizing effect, and a mold-resistant deodorant containing the mold-resistant deodorant. It is possible to provide a molded product having a high degree of deodorization and an excellent deodorizing effect.

It is a photograph showing the state in which black mold has propagated on the surface of a particle board coated with Tatsuyama stone powder as a mold-resistant deodorant of an example. It is a photograph which shows the result of wiping off the black mold which propagated on the particle board coated with the powder of Tatsuyama stone as the mold-resistant deodorant of an Example. It is a photograph showing the state in which black mold has propagated on the surface of the particle board of the comparative example. It is a photograph which shows the result of wiping off the black mold which propagated on the particle board of the comparative example.

1. 1. Mold-resistant deodorant The mold-resistant deodorant of the present invention contains rhyolite welded tuff, has high mold resistance, and has an excellent deodorizing effect. As a deodorizing effect, it quickly deodorizes organic substances such as formaldehyde contained in bonds and adhesives, odors such as ammonia, and pet odors. It is considered that the mold-resistant deodorant of the present invention decomposes the odor without redispersing the odor even if it is left after use for deodorizing the odor component. Further, in the present specification, the mold resistance means a property that the mold has low fixing property and can be easily removed without rooting even when the mold is generated on the surface portion. Further, the antifungal deodorant of the present invention also has antifungal properties.

The content of rhyolite welded tuff is preferably 5 to 100% by mass, more preferably 10 to 100% by mass, and 20 to 100% by mass in the total amount of the mold-resistant deodorant. More preferred. When the content of rhyolite welded tuff is in such a range, it can be used as a mold-resistant deodorant having better mold resistance and deodorant properties.
The mold-resistant deodorant of the present invention may be a liquid containing a solid, a slurry, or a solid. Further, it may be produced by firing at an arbitrary temperature.

1-1 The rhyolitic welded tuff that is included in the anti-mildew deodorant of rhyolitic welded tuff present invention, dragon Yamaishi, feldspar, Hyogo Prefecture, from Hyogo Prefecture Takasago referred to as such and Takashitsu stone Kasai It is a rhyolite welded tuff that is distributed in the city.

The rhyolite welded tuff contained in the mold-resistant deodorant of the present invention may be used as it is or may be used as a pulverized product. The pulverized product may be several mm to several cm square, and the particle size is preferably 1300 μm or less (for example, 0.001 to 1300 μm). More preferably, it is 1000 μm or less. When the grain size of the crushed rhyolite welded tuff is in such a range, the deodorant property becomes higher.

1-2 Other Ingredients The antifungal deodorant of the present invention may contain additives and solvents, if necessary.

1-2-1 Additives The additives contained in the mold-resistant deodorant of the present invention are not particularly limited, and various additives can be added. Specifically, for example, methyl cellulose (water-soluble or water-insoluble); cellulose fiber; cellulose nanofiber; water-soluble paper; acrylic resin emulsion, vinyl acetate resin, latex, SBR (styrene-butadiene-latex) Resins such as based resins; Modified resins mainly modified from resins such as acrylic-styrene resins, acrylic-silicon resins, ethylene-vinyl acetate resins; inorganic substances such as gypsum, cement, lime, and water glass. And so on. Among them, methyl cellulose, cellulose fiber, and cellulose nanofiber are environmentally superior. Moreover, when a resin binder is used, the strength is excellent. Therefore, it can be used as a constituent material such as a wall material in a humid place such as a washroom or a bathroom. Further, pigments such as titanium oxide, deodorants such as ceramic powder, sepiolite and bentonite, and known additives such as curing accelerators can be used.
Further, titanium apatite may be added to the antifungal deodorant of the present invention. By adding titanium apatite, in addition to the function of antifungal deodorization, functions such as air purification, water purification, stain decomposition, antibacterial, and sterilization can be imparted. The amount of titanium apatite added is, for example, 0.1 to 100 parts by mass, preferably 1 to 50 parts by mass, more preferably 1 to 20 parts by mass, and further preferably 1 to 1 part by mass with respect to 100 parts by mass of rhyolite welded tuff. It can be 10 parts by mass.

1-2-2 Solvent The mold-resistant deodorant of the present invention may contain a solvent, if necessary. The solvent that may be contained in the mold-resistant deodorant of the present invention is not particularly limited, but specifically, water; hydrocarbons such as heptane, hexane, toluene, xylene, cyclohexane, and ethylbenzene; ethanol, Examples thereof include alcohols such as ethyl alcohol and ethylene glycol; ethers such as 2-methoxyethanol; esters such as methyl acetate; and ketones such as acetone. Of these, a water-soluble solvent is preferable, and water is more preferable as a naturally friendly solvent. As the water, neutral purified water can be preferably used. When a crushed rhyolite welded tuff such as Ryuzan stone is added to neutral purified water, the composition becomes weakly alkaline and exhibits antifungal, antifungal and antibacterial effects.

The content of the solvent can be 0.1 to 20 in terms of mass ratio when the total mass of the rhyolite welded tuff and the above additives is 1.

2. Molded article The molded article of the present invention contains the antifungal deodorant of the present invention. The molded product of the present invention has an antifungal deodorant effect. The molded product of the present invention may be produced by cutting out rhyolite welded tuff and cutting it into an appropriate shape. It may also be produced by mixing a crushed rhyolite welded tuff (powder) with an appropriate binder, preferably pressing (crimping), molding, drying and / or sintering. .. Further, a slurry containing the mold-resistant deodorant of the present invention may be applied to an appropriate substrate such as a particle board and then dried to form a coating film.
The molded product of the present invention has an excellent antifungal deodorant effect, wall material / brick / tile for inner wall and outer wall, and siding for outer wall (plate-like material with excellent water resistance and weather resistance used for the outer wall of a building). It can also be preferably used as such.

2-1 Content The content of the mold-resistant deodorant contained in the molded product of the present invention is preferably 5 to 100% by mass, more preferably 10 to 100% by mass, based on the total amount of the molded product. It is more preferably 20 to 100% by mass. When the content of the mold-resistant deodorant is in such a range, a molded product having higher mold resistance and deodorant property can be obtained.

2-2 Binder The binder that can be used for producing the molded product of the present invention is not particularly limited, and a known binder can be used. Specifically, methyl cellulose (water-soluble or water-insoluble); cellulose fiber; cellulose nanofiber; water-soluble paper; acrylic resin emulsion, vinyl acetate resin-based, latex, SBR (styrene-butadiene-latex) resin-based Resin binders such as: Acrylic-styrene resin type, acrylic-silicon resin type, ethylene-vinyl acetate resin type, etc., modified resin binders made mainly of the resin used for the binder; gypsum, cement, lime, etc. Examples include inorganic binders such as water glass. Among them, methyl cellulose, cellulose fiber, and cellulose nanofiber are environmentally superior. In addition, the molded product using the resin binder has antifungal, antifungal and deodorant effects, and is excellent in strength and water resistance. Therefore, it can be used as a wall material or the like in a place where there is a lot of humidity such as a washroom or a bathroom and mold is likely to occur. Further, the molded product of the present invention can deodorize the odor from the resin or the like used.

Regarding the content of the binder, for example, methyl cellulose, cellulose fiber, and cellulose nanofiber are preferably used in an amount of about 0.5 to 200 parts by mass with respect to 100 parts by mass of rhyolite welded tuff, and 0.5 to 10 parts by mass. The portion is more preferable. The acrylic resin emulsion is preferably used in an amount of about 1 to 200 parts by mass with respect to 100 parts by mass of rhyolite welded tuff. When using a binder, the above solvent can be used.

Rhyolite welded tuff contains mineral components such as calcium and magnesium, and also has antibacterial action and negative ion generating action. Rhyolite welded tuff and moldings containing it can also be used as bath salts.
Further, by including titanium apatite in the molded product of the present invention, it is possible to impart functions such as air purification, water purification, stain decomposition, antibacterial, and sterilization in addition to the function of antifungal deodorization.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.

(1) Deodorant property evaluation [Example 1]
100 g of Tatsuyama stone powder (particle size 250 μm or less), 3 g of water-insoluble methyl cellulose, and 100 g of water were mixed and applied to one side of a particle board (30 cm square) to form a coating film.
A 2 L empty PET bottle with a lid was placed vertically in the longitudinal direction so that the lid portion was on top near the center of the coating film forming surface of the particle board on which the coating film was formed. A polyethylene bag was set so that the particle board on which the coating film was formed and the empty PET bottle could be sealed by covering them in a substantially pyramid shape with the lid portion of the empty PET bottle as the apex and the board as the bottom. 0.15 mL of an aqueous ammonia solution [Kinkan (registered trademark) manufactured by Kinkando Co., Ltd.] was dropped into the above polyethylene bag and sealed. The ammonia concentration in the polyethylene bag after 30 minutes, 2 hours, 6 hours and 10 hours after dropping was measured using an ammonia detector tube (manufactured by Gastec Co., Ltd., No. 3D). As a result, the ammonia concentration in the polyethylene bag was 0 ppm, respectively.

[Example 2]
Using the particle board on which the coating film formed in Example 1 was formed as it was, two days after performing Example 1, the experiment was conducted again in the same manner as in Example 1, and 30 minutes after dropping the aqueous ammonia solution, 2 After hours, 6 hours and 10 hours, the ammonia concentration in the container was measured. As a result, the ammonia concentration in the polyethylene bag was 0 ppm, respectively.

[Comparative Example 1]
An experiment was carried out in the same manner as in Example 1 except that the above coating film was not formed, and the ammonia concentration in the polyethylene bag was measured 30 minutes, 2 hours, 6 hours and 10 hours after dropping the aqueous ammonia solution. .. As a result, after 30 minutes, it exceeded 200 ppm, and after 2 hours, it exceeded the measurement upper limit of 500 ppm of the ammonia detector tube.

[Example 3]
100 g of Tatsuyama stone powder (particle size 250 μm or less), 5 g of acrylic resin emulsion (manufactured by Toyo Materan Co., Ltd., tile adhesive) and 20 g of water were mixed, made into a ball, and dried to obtain a molded product.
The obtained molded product was placed in a 200 cm × 350 cm × 250 cm water tank, 0.04 mL of an aqueous ammonia solution [Kinkan (registered trademark) manufactured by Kinkando Co., Ltd.] was added dropwise, and the mixture was sealed with a polyethylene bag. The ammonia concentration in the container 10 hours after the dropping was measured using an ammonia detector tube. As a result, the ammonia concentration in the water tank was 0 ppm.

[Example 4]
A mixture of 100 g of Ryuzan stone powder (particle size 250 μm or less), 10 g of acrylic resin emulsion (manufactured by Fujiwara Kagaku Co., Ltd.) and 20-40 g of water is filled in a cylindrical container with a diameter of 6 cm, dried, and has a diameter of 5. Two columnar molded bodies having a height of about 1 cm at 5 cm were obtained.
The two obtained compacts were placed in a 200 cm × 350 cm × 250 cm water tank, 0.04 mL of an aqueous ammonia solution [Kinkan Co., Ltd. Kinkan (registered trademark)] was added dropwise, and the mixture was sealed with a polyethylene bag. The ammonia concentration in the container 10 hours after the dropping was measured using an ammonia detector tube. As a result, the ammonia concentration in the water tank was 0 ppm.

[Example 5]
In Example 4, the experiment was carried out in the same manner as in Example 4 except that the amount of the acrylic resin emulsion was changed to 20 g. As a result, the ammonia concentration in the water tank 10 hours after dropping the aqueous ammonia solution was 0 ppm.

[Example 6]
In Example 4, the experiment was carried out in the same manner as in Example 4 except that the amount of the acrylic resin emulsion was changed to 30 g. As a result, the ammonia concentration in the water tank 10 hours after dropping the aqueous ammonia solution was 0 ppm.

<Water absorption experiment>
When the molded products obtained in Examples 4 to 6 were sprayed with water, they did not absorb water instantly, but water oozes on the surface and absorbs water little by little. Moisture absorption was slightly faster in the molded product having an amount of acrylic resin emulsion of 10 g, and it was almost the same in the molded product having an amount of acrylic resin emulsion of 20 g and 30 g.

<Strength of molded product>
The molded products obtained in Examples 3 to 6 were also excellent in strength. In particular, the molded products obtained in Examples 4 to 6 had sufficient strength to be used as a composition for building materials such as siding, brick, and tile.

[Example 7]
An experiment was carried out in the same manner as in Example 3 except that the molded product composed of Tatsuyama stone powder, acrylic resin emulsion and water in Example 3 was changed to 100 g of Aoishi original plate of Tatsuyama stone. As a result, the ammonia concentration in the water tank 10 hours after dropping the aqueous ammonia solution was 20 ppm.

[Comparative Example 2]
The experiment was carried out in the same manner as in Examples 3 to 6 except that the molded product was not put in the water tank. As a result, the ammonia concentration in the water tank 10 hours after dropping the aqueous ammonia solution was 25 ppm.

[Example 8]
^Two floor control panels were laminated on the entire floor of a room with a floor area of about 25 m ² , and a resin floor material and a cushion floor were attached in half to finish. Eco AR600 manufactured by Toli Corporation was used as the flooring adhesive. In addition, particle board was attached to the walls and ceiling of the room with an adhesive. The adhesive used was an F Forster product that is not subject to formaldehyde regulations.
As a result of examining the formaldehyde concentration in the room with a formaldehyde detector tube (manufactured by Gastec Co., Ltd., No. 91D) 2, 3, 4, and 5 days after the construction, all of them were 2 ppm.
After that, a slurry containing Ryuzan stone powder (particle size 250 μm or less) on the particle board on the wall surface and ceiling [plaster wall material, Ryuzan stone content 500 g / m ² , binder: water-insoluble methyl cellulose (3 g per 100 g of Ryuzan stone)] Was applied to form a plaster wall. One day after the formation of the plaster wall, the indoor formaldehyde concentration was examined with a formaldehyde detector tube and found to be 0 ppm.

[Example 9]
100 g of Tatsuyama stone powder (particle size 500 μm or less) and 3 g of titanium apatite (manufactured by Taihei Kagaku Sangyo Co., Ltd.) were mixed with 3 g of water-insoluble methyl cellulose and 100 g of water. This mixed solution was uniformly mixed without separation. This mixed solution was applied to one side of a particle board (30 cm square) with a trowel to form a coating film. The coating film became a clean plaster wall without cracking. This plastered wall had an excellent deodorizing effect and mold resistance, and when sprayed with water, it had sufficient water absorption. Furthermore, functions such as air purification, water purification, dirt decomposition, antibacterial, and sterilization could be added.

As shown in Examples 1 to 9, by containing rhyolite welded tuff, it was possible to obtain a mold-resistant deodorant having an excellent deodorizing effect that absorbs odors such as ammonia and formaldehyde. The same applies to pet odors. As shown in Example 1, the antifungal deodorant of the present invention maintained the deodorizing effect even after 30 minutes to a long time, and it was found that the deodorizing effect and the odor decomposition effect were astonishing. Further, as shown in Example 2, the antifungal deodorant of the present invention can deodorize a large amount of odor, and the deodorizing effect is maintained. Therefore, it is considered that the odor is decomposed. Further, as shown in Examples 3 to 6, even when a polymer-based adhesive was mixed with rhyolite welded tuff powder to form a molded product, the effect of absorbing odor was demonstrated.

(2) Mold resistance evaluation [Example 10]
Place rice and black mold on the surface of a particle board coated with Tatsuyama stone powder, put it in a cup containing 30 g of water, seal it with a resin film at a humidity of 50 to 80% or more, and leave it for 21 days. did. As a result, as shown in FIG. 1, black mold propagated on the surface.
The propagated black mold was wiped off with a tissue paper, and the surface condition was visually confirmed. As shown in FIG. 2, the black mold could be easily wiped off.

[Comparative Example 3]
Rice and black mold were placed on the surface of the particle board and left for 21 days in the same manner as in Example 10 except that the particle board coated with Tatsuyama stone powder was replaced with a particle board to which nothing was applied. As a result, as shown in FIG. 3, black mold propagated on the surface.
The propagated black mold was wiped off with a tissue paper, and the surface condition was visually confirmed. As shown in FIG. 4, the black mold had settled and could not be wiped off.

As shown in Example 10, by containing rhyolite welded tuff, it was possible to obtain a mold-resistant deodorant having high mold resistance. In addition, no mold was generated on the powder of Tatsuyama stone itself.

The mold-resistant deodorant of the present invention can be used as a mold-resistant deodorant having high mold resistance and an excellent deodorizing effect. Further, according to the molded product of the present invention, it is possible to provide a molded product having low mold fixability, excellent mold resistance, and an excellent deodorizing effect.

Claims (3)

A mold-resistant deodorant containing rhyolite welded tuff distributed from Takasago City, Hyogo Prefecture to Kasai City, Hyogo Prefecture . The mold-resistant deodorant according to claim 1, further comprising titanium apatite. A molded product containing the mold-resistant deodorant according to claim 1 or 2.