JPH09110620A - Antimicrobial agents for vacuum cleaners and their uses - Google Patents

Abstract

(57) [Abstract] [Problem] Propagation of microorganisms in an electric vacuum cleaner can be effectively suppressed, and it can be used without adversely affecting the human body and without causing discomfort to the user of the electric vacuum cleaner and the people around it. To provide an antimicrobial agent, and to provide an effective method for suppressing the growth of microorganisms in an electric vacuum cleaner by using the antimicrobial agent. A formulation containing allyl isothiocyanate (AIT) and the release amount of AIT from the formulation at 20 ° C. to 40 ° C. is 1 mg / day to 200 mg / day. Examples of the formulation include a formulation containing shellac incorporating AIT, and a formulation obtained by packaging AIT in an AIT vapor-permeable packaging material. It is effective to put the preparation in an electric cleaning bag of an electric vacuum cleaner for use.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antimicrobial agent applied in a vacuum cleaner, and a method for suppressing the growth of microorganisms in the vacuum cleaner using the same.

[0002]

2. Description of the Related Art A dust collection bag of an electric vacuum cleaner called an electric cleaning bag is usually made of paper or non-woven fabric, and is installed in the electric vacuum cleaner until it is replaced once a month. It is used as it is. Since the electric cleaning bag attached to the electric vacuum cleaner is left in a state where it is clogged with dust and dirt, bacteria and the like are very likely to grow inside the bag, especially from the hot and humid rainy season to midsummer.

Further, when an electric vacuum cleaner is used, the motor heats up, which raises the temperature in the electric cleaning bag after operation, which is considered to give favorable conditions for breeding bacteria and the like. Then, when bacteria and the like propagate inside the electric cleaning bag, an offensive odor is generated, and in particular, the air containing the offensive odor discharged when the vacuum cleaner is used is very uncomfortable and also causes a large amount of mold and bacteria. As it is scattered all over the room, it is not good for hygiene.

[0004]

Conventionally, in order to solve the above problems, there have been those in which an antibacterial agent is provided on the inner surface of the electric cleaning bag, or an aromatic agent or a deodorant is arranged. However, in the case where the antibacterial agent is applied, although the antibacterial property is exhibited against the dust contacting the inner surface of the electric cleaning bag, sufficient germ growth is performed against the dust not contacting the inner surface of the electric cleaning bag. There was no suppressive effect. Further, in the case where the fragrance and the deodorant were arranged, although the effect of reducing the offensive odor was obtained, it was not possible to prevent the growth of the bacteria themselves.

Further, Japanese Patent Application Laid-Open No. 63-122719 discloses an embodiment in which a volatile aromatic substance having antibacterial properties, such as cinnamon leaf and clove, is arranged in an electric cleaning bag. This invention can be expected to impart antibacterial properties to the entire interior of the electric cleaning bag, but it normally uses a substance used as a fragrance, and there is a problem that sufficient antibacterial properties cannot be obtained. there were.

Further, instead of such a fragrance or deodorant,
It is possible to select an antibacterial agent that is volatile and has a high antibacterial property, but such an antibacterial agent has a bad effect on the human body and has a strong irritating odor, which causes discomfort. Was unsuitable.

The object of the present invention is to solve the above problems and to effectively suppress the growth of microorganisms in the electric vacuum cleaner, but without adversely affecting the human body. It is to provide an antimicrobial agent that can be used without causing discomfort to humans. Another object of the present invention is to provide an effective method for suppressing the growth of microorganisms in an electric vacuum cleaner by using the antimicrobial agent according to the present invention.

[0008]

The antimicrobial agent for a vacuum cleaner according to the present invention has the following features. (1) An antimicrobial agent containing allyl isothiocyanate (hereinafter referred to as “AIT”), wherein the amount of AIT released from the antimicrobial agent at 20 ° C. to 40 ° C. is 1 mg / d.
The antimicrobial agent for a vacuum cleaner, which is ay to 200 mg / day.

(2) The antimicrobial agent containing AIT is A
The antimicrobial agent for a vacuum cleaner according to (1) above, which is a formulation containing IT-loaded shellac.

(3) The antimicrobial agent containing allyl isothiocyanate is an antimicrobial agent prepared by packaging allyl isothiocyanate in an allyl isothiocyanate vapor-permeable packaging material, and the packaging material has a large number of pores. The antimicrobial agent for an electric vacuum cleaner according to (1) above, which has a structure in which a part of the holes of the packaging base material having the above is filled or narrowed with an allyl isothiocyanate vapor impermeable resin.

(4) The antimicrobial agent for an electric vacuum cleaner according to the above (3), wherein the resin is regenerated cellulose.

Further, the method for suppressing microbial growth in an electric vacuum cleaner using the antimicrobial agent for the electric vacuum cleaner according to the present invention has the following characteristics. (5) By arranging in the electric cleaning bag, A in the electric cleaning bag
A method for suppressing microbial growth in an electric vacuum cleaner, characterized in that the IT concentration is maintained at 1 ppm to 100 ppm.

[0013]

In the present specification, "for electric vacuum cleaner" means that it is applied to the entire flow path in the electric vacuum cleaner. In particular, by disposing the antimicrobial agent in the electric cleaning bag, a strong antimicrobial action is exhibited in the flow path from the electric cleaning bag to the discharge port.

In the electric vacuum cleaner, the electric cleaning bag is arranged adjacent to a component such as a motor or rotary vane that generates heat at a high temperature and is heated, but on the other hand, it is cooled by passage of sucked air. Used under complicated temperature conditions. Generally, the temperature inside the electric cleaning bag is the highest for several tens of minutes after using the vacuum cleaner, but if the room temperature is 30 ° C,
At most, it will be around 34 ° C. On the other hand, it is in the temperature range of 20 ° C or higher that the bacteria causing the bad odor are easily propagated, and in order to suppress the proliferation of microorganisms in the electric cleaning bag, 20 ° C is required.
It can be said that the antibacterial property is required to be exhibited in the temperature range of -40 ° C. In addition, the capacity of the electric vacuum cleaner (electric cleaning bag) is generally about 4 to 5 liters.

The present invention applies AIT to the suppression of the growth of microorganisms such as bacteria in an electric vacuum cleaner, particularly in an electric cleaning bag. AIT is a substance having a very high volatility, and an antibacterial agent containing AIT generally has a property that its volatility becomes higher as the temperature rises. AIT concentration in the electric cleaning bag is 1
Maintaining the concentration of ppm to 100 ppm, especially 5 to 50 ppm is a condition for suppressing microbial growth.
By maintaining the AIT concentration in the electric cleaning bag within this range, it is possible to effectively suppress the growth of microorganisms in the electric cleaning bag, and also to prevent the user of the vacuum cleaner and the surrounding people from having a strong irritating odor of AIT. Never feel.

A preferred AIT concentration in the electric cleaning bag is 1 ppm
100 ppm is the temperature range within the electric cleaning bag 20 ° C. to 40 ° C.
The daily AIT release amount at 1 ° C is 1 mg / da
This is achieved by forming the AIT-containing antimicrobial agent so that the concentration is y to 200 mg / day. As a result, the problems of AIT, such as lack of sustainability due to its high volatility and the strong irritating odor of volatilized AIT vapor, make people around them uncomfortable. , Which is a preferable antimicrobial agent for electric cleaning bags.

The antimicrobial agent according to the present invention is arranged in an electric vacuum cleaner, in particular, in an electric cleaning bag.
It shows the most effective release of AIT and is useful, but not only in the electric purging bag,
An effective antimicrobial action is also exhibited in the flow path before and after the electro-cleaning bag, that is, the entire flow path from the suction port to the discharge port through the electro-cleaning bag.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Microorganisms targeted by the antimicrobial agent of the present invention are minute organisms that propagate in the flow path of an electric vacuum cleaner, and include, for example, molds, fungi such as yeast, staphylococci, Bacteria such as E. coli, Salmonella and Vibrio, spores, algae and other harmful microorganisms. In the present invention, the antimicrobial action is a concept that includes antibacterial action such as sterilization against aerobic bacteria and anaerobic bacteria, bacteriostatic action, antibacterial action, fungicide against mildew, sterilizing action, antifungal action and the like. is there.

The AIT used in the present invention is a component of horseradish and the like, and has an excellent antibacterial action such as bactericidal / bactericidal / antifungal action. In addition, a high antimicrobial effect is also recognized in AIT vapor. AIT used in the present invention
May be of natural origin, synthetic origin, or the like. The production method such as the synthesis method is not particularly limited, but a method generally obtained by heating and reacting allyl iodide or allyl bromide with sodium thiocyanate in ethanol. The AIT used in the present invention is 100
The composition is not limited to a single agent composed of 10%, but may be an AIT-containing composition.
Examples of the AIT-containing composition include powdery or granular materials in which AIT is supported on a carrier. Any carrier may be used as long as it can carry AIT and does not affect reactivity with AIT. For example,
Pulp, paper, cellulose particles, zeolite, alumina,
Examples include commonly used inert carriers such as silica gel and calcium silicate.

The aspect of the antimicrobial agent containing AIT is not limited, and any antimicrobial agent may be used as long as it is easy to use and easy to process depending on the system used. For example, one in which AIT is incorporated into a substrate to control the amount of AIT vapor released, A
Examples include a mode in which IT is wrapped in a suitable film having AIT vapor permeability to control the amount of AIT vapor released. According to such an aspect, the effect that the strong volatility of AIT can be sufficiently suppressed, the amount of AIT vapor released can be freely controlled, and these actions can be maintained for a long period of time while being inexpensive and easy to process Can be given.

First, a mode of incorporating AIT into the base material will be described. The base material in this case is shellac alone,
Alternatively, a substance containing shellac is mentioned as a preferable substance, and it is preferable to use these after being processed into a shape, or to be applied and contained on another substrate.

[0021] Shellac is a resinous substance secreted by Lactophyllidae that parasitizes leguminous plants such as bilmanem and kutch, and mulberry plants such as pearl oysters and Indian boletus, and is usually bleached and purified. used. Although its chemical composition has not been clarified, it is believed that the main component is a natural condensation product in which oxycarboxylic acids are bonded to each other as a lactone.

The state in which the AIT is taken in by shellac is a state in which the entire surface or part of the AIT is covered with shellac, and preferably the entire surface is covered with shellac. AIT exists in shellac with its original volatility suppressed, and the A
The amount of AIT vapor released is controlled by the release of IT through the shellac and the passage of AIT vapor through the fine pores formed in the solid shellac.

The amount of AIT released from shellac at 20 ° C to 40 ° C is 1 mg / day to 200 mg / day.
To achieve this, for example, a mode in which shellac is kneaded in a ratio of about 4 to 8 parts by weight with respect to 1 part by weight of AIT is mentioned. Such a mixture has a stable release amount and can be suitably used, but it can be produced even if it is out of the range depending on the blending of additives and the like. In short, it is important that the release amount per unit time is stable and that the release amount does not change significantly with temperature changes. According to such an embodiment, the amount of AIT released at 20 ° C to 40 ° C was 1 mg / min, as revealed by various tests described below.
It is possible to control the day to 200 mg / day, and the AIT concentration in the electric cleaning bag is at least 3 at 1 ppm to 100 ppm.
It can be maintained for 0 days. Generally, the electric cleaning bag is 1
Since it is exchanged at a rate of about once a month, it is extremely preferable as an antimicrobial agent to be placed inside.

Next, a mode in which the above-mentioned amount of AIT released is achieved by wrapping AIT with an appropriate AIT vapor-permeable wrapping material will be described. The amount of AIT released at 20 ° C to 40 ° C is 1 mg / day to 200 mg / da.
Examples of the packaging material that can be controlled to y include those having a structure in which a part of the pores of a packaging base material having a large number of fine pores is filled or narrowed with an AIT vapor impermeable resin. The large number of fine holes in the packaging base material are composed of both holes based on the structure of the material itself of the packaging base material and holes formed based on the method for producing the packaging base material. When the AIT vapor-impermeable resin enters the large number of holes in the packaging base material, the voids in the packaging base material are filled and deformed in a complicated manner, and as a result, the amount of AIT released can be preferably controlled.

As the packaging base material, a thin material such as a fibrous material such as paper or non-woven fabric is usually used. The material may be a hydrophilic material, a hydrophobic material, or a mixture thereof.
A material having a relatively low T vapor permeability is preferred.

The hydrophilic material among the materials for the packaging base material is not particularly limited, but examples thereof include natural pulp such as hardwood pulp and softwood pulp, bast fibers such as Manila hemp, Kozo and Mitsumata, cotton linter, rayon, cupra and polyvinyl. One or more of natural, semi-synthetic or synthetic fibers such as alcohol and vinylon can be used. Further, among the materials of the packaging base material, as the hydrophobic material,
Examples thereof include polyethylene, polyester and polypropylene.

Suitable as the AIT vapor-impermeable resin for processing are, for example, regenerated cellulose from viscose, regenerated cellulose from cellulose copper ammonium oxide solution, cellulose acetate, carboxymethyl cellulose,
Starch, polyvinyl alcohol, vinylidene chloride, acrylic resin, etc. may be mentioned. Such a resin has compatibility with a packaging base material to be used, suitability for coating, AIT vapor permeability of the coated packaging base material, slip properties required at the time of packaging and use, workability at the time of heat sealing, etc. Selected from a perspective. From these viewpoints, regenerated cellulose from viscose is particularly preferable among the above resins.

The method for filling the numerous fine holes in the packaging base material or the method for narrowing the pores is not particularly limited, but usually a method for applying a solution of the above resin to the packaging base material is mentioned. To be The application method can be appropriately selected depending on the viscosity of the resin liquid used, the desired resin adhesion amount, and the like. Specific examples thereof include roll coating by a reverse roll and a gravure roll, bar coating, rod coating, and impregnation coating.

The packaging material is obtained by subjecting the packaging base material coated with the resin to a drying treatment. Among them, as the resin, when regenerated cellulose from viscose or regenerated cellulose from cellulose ammonium copper oxide solution is used, first, viscose or ammonium copper oxide solution is applied to the packaging base material, and then regenerated with acid or the like. By doing so, regenerated cellulose is obtained. After that, if necessary, desulfurization and bleaching treatments are performed, followed by washing with water, softening treatment with a softening agent such as triethylene glycol, and then drying treatment. As the regeneration treatment with an acid, a conventional method such as a method for preparing regenerated cellulose can be used.

Since the AIT vapor permeability of the packaging material changes depending on the pore diameter, the pore density and the total area of the pores formed in the packaging material, it should be appropriately adjusted by adjusting the various conditions. Is possible. The pore size, pore density, and total area of pores formed in the packaging material are, for example, the type of packaging base material, the type of resin, the concentration of resin liquid when used for coating, the viscosity, the impregnation amount, and the coating method. Appropriately selected,
It can be freely adjusted by combining them.
For example, in order to reduce the permeability of AIT vapor, a method of selecting a packaging base material having a small inter-fiber void or increasing the amount of resin impregnated can be adopted. The release amount of AIT from the packaging material at 20 ° C to 40 ° C is 1 mg / day to 2
A suitable example of setting the dose to 00 mg / day is to coat the surface of the rayon non-woven fabric with viscose, but due to handling problems such as heat sealability, it should be used in combination with another film. Is preferred. In this case, to stabilize the discharge amount should be designed 0.5 deniers as rayon nonwoven fabric, the amount of cellulose to be regenerated by coating the viscose and 2g / m ² ~3g / m ² Is preferred. According to such an embodiment, the amount of AIT released was 1 to 20 ° C. to 40 ° C. as revealed by various tests described later.
It can be controlled from mg / day to 200 mg / day, and it is possible to maintain the AIT concentration in the electric cleaning bag at 1 ppm to 100 ppm for at least 30 days. It is highly preferred as an antimicrobial agent to be placed.

The wrapping material used in the present invention is a perforated film or A with permeation of AIT vapor due to micropores.
It may be laminated with a heat-sealable film having IT transparency. Lamination with perforated film,
The packaging base material with low density and high AIT vapor permeability is AI
This is useful when the target AIT vapor permeability cannot be narrowed down by applying a resin having no T permeability. Further, according to this, the permeability of the AIT vapor can be adjusted more easily and fine adjustment can be performed.

A preferred embodiment of the perforated film is a film in which the film is mechanically or thermally treated to form regular holes. Also, by laminating with a heat-sealable film having AIT transparency,
Heat seal strength can be obtained. A usual method can be used for the laminating treatment, and it does not matter before or after the resin treatment of the packaging base material.

The packaging material used in the present invention may be water repellent or water resistant. Such processing can be performed by a usual method before or after the resin treatment of the packaging base material. Specifically, after immersing the packaging material in a solution of a water repellent or water resistant agent of a predetermined concentration, squeeze the excess liquid,
A method of drying is exemplified.

The AIT in the case of packaging with a packaging material may be in any form such as a liquid (oil or aqueous solution), or a powder, granules or solid supported on another carrier. Is exemplified. Examples of the carrier include pulp, paper, cellulose particles, zeolite, alumina, silica gel, calcium silicate, etc., as described above.

The packaging form for packaging the AIT in the packaging material is not particularly limited as long as it is a form in which the AIT is enclosed in the bag. Examples of the bag form include a three-way seal, a four-way seal, and a pillow type. The bag-making means is also not particularly limited, such as a method using an adhesive or a heat-sealing method, but the heat-sealing method is preferable from the viewpoint of productivity and stability.

By arranging the antimicrobial agent of the present invention according to the above description in an electric vacuum cleaner, particularly in an electric cleaning bag, the concentration of allyl isothiocyanate in the electric cleaning bag is increased in a general usage condition such as indoors. Is 1 ppm to 100 p
It is maintained at pm and shows the most effective antimicrobial action.

[0038]

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. In the following examples, first, the release amount of AIT at 20 ° C to 40 ° C is 1 mg / day to 200 mg /
A formulation that was a day and its comparative example were made. Next, these were actually placed in a commercially available vacuum cleaner, and the AIT concentration inside the vacuum cleaner and the antimicrobial property were examined.

Example 1 This example is a specific example of a mode in which AIT is wrapped with a film having AIT vapor permeability to control the amount of AIT vapor released. (1) Preparation of AIT-impregnated beads Porous cellulose beads having an average particle diameter of 2 mm (manufactured by Rengo Co., Ltd .: Viscopearl); 180 g; and AIT; 2
00 g was mixed with an impregnator for 1 hour, and AIT was adsorbed on the porous cellulose beads to prepare AIT-impregnated beads. (2) Production of packaging material As a packaging material, rayon nonwoven fabric (0.5 denier, 14
g / m ² ), low density polyethylene film (thickness 15
μm), unstretched polypropylene film (thickness 20μ
m) was laminated in order, and the surface of the rayon nonwoven fabric side of this was roll-coated with a viscose solution having a concentration of 4.6% cellulose, and the viscose was regenerated in 2N sulfuric acid to give cellulose (2 g / m 2 ² ), then wash with water, desulfurize,
The one prepared in the order of washing with water and drying was used as a package. (3) Preparation of antimicrobial agent of the present invention AIT-impregnated beads of the above (1); 1720 mg (AIT
An impregnated amount of 800 mg) was sandwiched with the unstretched polypropylene film of the packaging material as the inner side, and the polypropylene film was heat-sealed on three sides to prepare a package (40 mm × 40 mm) containing AIT-impregnated beads. The amount of AIT released per day of this antimicrobial agent at 30 ° C is
It was 13 mg / day.

Example 2 Example 1 was repeated except that the weight of AIT-impregnated beads was 430 mg and the viscose solution was a viscose solution having a concentration of 5.2% cellulose (regenerated cellulose was 2.3 g / m ² ).
Similarly to the above, a package containing AIT-impregnated beads was prepared. The amount of AIT release of this antimicrobial agent at 30 ° C. per day was 8 mg / day.

Example 3 In this example, AIT was introduced into shellac to obtain AIT.
It is a specific example of the aspect which controls the discharge amount of steam. Shellac; 300 g was softened and melted while heating to 80 ° C. with a kneader, and 75 g of AIT was added thereto and mixed. After that, the heating is stopped, and the block-shaped AI is allowed to cool overnight at room temperature.
A T-loaded shellac was obtained. The weight ratio of AIT and shellac of this product was AIT: shellac≈1: 6. This was pulverized with a pulverizer to obtain a granular AIT preparation having an average particle diameter of 500 μm. The amount of AIT released per day of 1.5 g of this antimicrobial agent (220 mg of AIT) at 30 ° C. was 5 mg / day.

Comparative Example 1 A package containing AIT-impregnated beads was prepared in the same manner as in Example 1 except that the viscose solution was not applied. The daily AIT release of this antimicrobial agent at 30 ° C is 23
3 mg.

Comparative Example 2 Polyethylene terephthalate film 15 μm instead of unstretched polypropylene film 20 μm, low density polyethylene film 15 μm as the innermost heat seal layer
A package containing AIT-impregnated beads was prepared in the same manner as in Example 1 except that m was used. The amount of AIT release of this antimicrobial agent at 30 ° C. per day was 0.5 mg.

[Placement of Antimicrobial Agent in Vacuum Cleaner] The antimicrobial agent of the present invention obtained in Examples 1 to 3 above.
Each of the antimicrobial agents of Comparative Examples 1 and 2 was placed in an electric cleaning bag of an electric vacuum cleaner, and the electric vacuum cleaner was operated for 30 minutes per day in an environment of room temperature of 30 ° C. and relative humidity of 80%. Was operated, the AIT concentration in the electric cleaning bag was measured with a gas detector tube, and its change with time was examined. The capacity of the electric vacuum cleaner (electric cleaning bag) used in the experiment was 4.5 liters. AI
The T concentration was measured just before the operation. In addition, the odor of the room during the operation of the vacuum cleaner was examined.

FIG. 1 is a graph showing the measurement results. As shown in the figure, the antimicrobial agent of the present invention obtained in the above Examples 1 to 3 had an AIT concentration of 1 p in the electric cleaning bag with a slight concentration drop over 30 days.
It was maintained at pm-100 ppm. In addition, the odor of the room hardly felt the irritating odor peculiar to AIT, and there was no problem in actual use such as life. On the other hand, the formulation of Comparative Example 1 contained A in the first 4 days because the amount of AIT released was too large.
All of the IT was released, and the AIT concentration in the electric sweep bag greatly exceeded 100 ppm for the four days, but the AIT concentration in the electric sweep bag on the fifth day was 0 ppm. In addition, the odor in the room was at a level at which the stimulating odor of the AIT was extremely strong, which hindered practical use in daily life. The formulation of Comparative Example 2 had a too small amount of AIT released,
The AIT concentration in the electric sweep bag was less than 1 ppm throughout 30 days.

Further, the above Examples 1 to 3 and Comparative Example 1,
AI of 5 kinds of antimicrobial agents obtained in 2 per day
It was examined what kind of value the release amount of T shows under different temperature conditions (room temperature). Room temperature is 20 ℃, 30
C. and 40.degree. C. (80% relative humidity). Samples of each antimicrobial agent are 5 for each of the 3 temperature conditions.
It was made into pieces. To measure the amount of AIT released per day of the sample, the weight of each sample was measured daily to obtain the weight reduction, and this was taken as the amount released per day. AI of each sample
The amount of T released is an average value for 3 days from the first day of the experiment. Each sample released almost constant amount of AIT vapor every day, but Comparative Example 1 finished releasing AIT vapor in 4 days. FIG. 2 is a graph showing the measurement results. As shown in the graph of FIG.
In the temperature range of 40 ° C to 40 ° C, the amount of AIT released gradually increases as the temperature rises, but 1 mg / day to 200
It was found to be controlled within the range of mg / day. On the other hand, the antimicrobial agent obtained in Comparative Example 1 showed a drastic increase in the amount of AIT released with an increase in temperature.
It was more than 00 mg / day. Further, the antimicrobial agent obtained in Comparative Example 2 remained suppressed in the amount of AIT released even when the temperature increased, and remained below 1 mg / day.

[Antimicrobial Confirmation Test] Examples 1 to 1 above
The antimicrobial properties of the antimicrobial agent of the present invention and other antimicrobial agents obtained in No. 3 were confirmed. The microorganism to be suppressed, Aspergillus niger, was inoculated on a potato agar medium in a petri dish, and this was placed in an electric cleaning bag. The room temperature was 30 ° C. and the relative humidity was 80%. Examples 1 to 3,
The preparation of Comparative Example 2 and 1 g of cinnamon as Comparative Example 3 were each placed in an electric cleaning bag, and the electric vacuum cleaner was operated for 30 minutes every day, which was continued for 5 days. As a result of observing the breeding state of Aspergillus niger in a petri dish, Example 1
Nos. 3 to 3 suppressed the growth of Aspergillus niger, whereas those of Comparative Examples 2 and 3 did well, so that the antimicrobial agent of the present invention is effective for the reproduction of microorganisms in the vacuum cleaner. It turned out to be suppressed to.

[0048]

INDUSTRIAL APPLICABILITY The present invention is applied to the AI cleaner against the microorganisms that propagate in the vacuum cleaner, especially in the electric cleaning bag and the dust collecting passages before and after the cleaning bag.
It is possible to use T most effectively without causing any adverse effect on the human body and without causing any discomfort to the user or people around him. And unlike the conventional one in which the antibacterial agent is coated on the electric cleaning bag itself, the antibacterial property is not exerted only on the antibacterial agent application surface, but also in the entire electric cleaning bag and the entire flow path in the vacuum cleaner. It was possible to impart high antimicrobial properties to.

[Brief description of the drawings]

1 AIT of the formulations obtained in the examples and comparative examples
It is a graph which shows the time-dependent change of a release amount.

FIG. 2 is a graph showing changes in the amount of AIT released with changes in temperature of the preparations obtained in Examples and Comparative Examples.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical indication location A47L 9/14 A47L 9/14 Z (72) Inventor Shuji Hirohama 1 Jiyugaoka, Kanazu-cho, Sakai-gun, Fukui Prefecture -8-10 Rengo Co., Ltd., Fukui Research Laboratory (72) Inventor Yuichi Mizukami Midori Cross Castle East Branch Room, 1-147 Chuo-ku, Osaka-shi, Osaka-shi, Osaka (72) Inventor Asami Takada, Joto-ku, Osaka-shi, Osaka Chuo 1-Chome 1-47 Midori Cross Castle East Branch Office (72) Inventor Taiji Sekiyama 1-4-1 Chuo-ku, Osaka City Osaka City Midori Cross Castle East Branch Office

Claims (5)

[Claims] 1. An antimicrobial agent containing allyl isothiocyanate, wherein the release amount of allyl isothiocyanate from the antimicrobial agent at 20 ° C. to 40 ° C. is 1 mg / da.
An antimicrobial agent for a vacuum cleaner, characterized in that it is from y to 200 mg / day. 2. The antimicrobial agent for a vacuum cleaner according to claim 1, wherein the antimicrobial agent containing allyl isothiocyanate is a preparation containing shellac incorporating allyl isothiocyanate. 3. The antimicrobial agent containing allyl isothiocyanate is an allyl isothiocyanate packaged in an allyl isothiocyanate vapor permeable packaging material, and the packaging material has a large number of pores. The antimicrobial agent for a vacuum cleaner according to claim 1, which has a structure in which a part of the holes of the packaging base material is filled or narrowed with an allyl isothiocyanate vapor impermeable resin. 4. The antimicrobial agent for a vacuum cleaner according to claim 3, wherein the resin is regenerated cellulose. 5. The concentration of allyl isothiocyanate in the electric cleaning bag is set to 1 pp by arranging the antimicrobial agent for the electric vacuum cleaner according to any one of claims 1 to 4 in the electric cleaning bag in the electric cleaning machine.
A method for suppressing the growth of microorganisms in an electric vacuum cleaner, which is characterized by maintaining m to 100 ppm.