JP2021187819A - Antimicrobial composition and aerosol composition for antibacterial treatment therewith - Google Patents

Abstract

To provide an antibacterial composition that is excellent in dispersibility of inorganic antibacterial agent and can stably impart antibacterial property to a target substance with excellent handleability and an aerosol composition for antibacterial treatment using the same.SOLUTION: An antibacterial composition is formed by containing 0.05 to 2.0 mass% of a silver carrying zeolite of an inorganic antibacterial agent as an antibacterial agent, 0.02 to 6.0 mass% of smectite clay ore as a dispersant, 20 to 60 mass% of alcoholic organic solvent, and water as residue, in which the dispersant contains at a rate of 30 pts.mass or larger of the smectite clay ore relative to 100 pts.mass of the silver-carrying zeolite.SELECTED DRAWING: None

Description

The present invention relates to a technique for an antibacterial composition and an aerosol composition for antibacterial treatment using the same, and more specifically, an application for imparting antibacterial property to a product containing no antibacterial agent or further enhancing the antibacterial property. The present invention relates to an antibacterial composition used in the above and an aerosol composition for antibacterial treatment using the same.

In recent years, in the field of antibacterial technology, since it is superior in safety, heat resistance and durability compared to organic antibacterial agents, inorganic antibacterial agents mainly composed of antibacterial metals such as silver, copper and zinc have been studied. It is being advanced. In particular, silver-supported zeolite, which is a type of porous ceramic in which silver ions are supported, is a field in which high safety is required because it can effectively exhibit the antibacterial performance of silver ions and is easy to use. It is attracting attention as an antibacterial ingredient in.

This type of inorganic antibacterial agent is not only blended with the resin component and paint component that are the base material and contained in the product from the beginning, but also an antibacterial composition (undiluted solution) containing the inorganic antibacterial agent is sprayed. An antibacterial treatment aerosol composition formulated with the above is prepared, and the container is pressure-filled and sprayed onto the object to be adhered to the surface of products that do not contain antibacterial components or products for which antibacterial properties are desired to be further enhanced. be able to. In particular, by using an inorganic antibacterial agent in which an antibacterial metal is supported on a porous ceramic or the like, such as silver-supported zeolite, as the aerosol composition, evaporation of the antibacterial component adhering to the surface of the object can be suppressed. A stable antibacterial effect can be maintained.

As the antibacterial composition used in the conventional aerosol composition for antibacterial treatment, for example, as disclosed in Patent Document 1 and Patent Document 2, silver-supported zeolite as an inorganic antibacterial agent is used as an alcoholic organic solvent or water. An antibacterial composition dispersed in a solvent such as the above has been proposed. By blending such an antibacterial composition with a propellant as a stock solution, an aerosol composition (spray product) for antibacterial treatment can be obtained.

However, as in the antibacterial composition disclosed in Patent Document 1 described above, when the amount of the organic solvent blended as a solvent (95% by mass or more in the stock solution) is large, the specific gravity of the silver-supported zeolite is large, so that the silver-supported zeolite has a large specific gravity. It is prone to settling and agglomeration and its redispersibility is poor, and when it is used as a stock solution of an aerosol composition for antibacterial treatment, there is a problem that the antibacterial property expected for an object as a spray product cannot be imparted. there were. In addition, since it is easily ignited by fire, it is difficult to handle, and there is a risk of causing irritation to the skin and mucous membranes during spraying.

On the other hand, when the blending amount of water (90% by mass or more in the undiluted solution) is large as the solvent as in the antibacterial composition disclosed in Patent Document 2, when this is used as the undiluted solution of the aerosol composition for antibacterial treatment. Has a problem that the drying property after spraying on the object is poor and the antibacterial property cannot be imparted to an arbitrary place due to dripping. In particular, it takes time to dry as a spray product for textile products such as carpets, mats, sofas, etc., where bacterial cells are likely to adhere partially and the growth of bacterial cells may cause serious health and hygiene problems. , Was not practical.

Japanese Unexamined Patent Publication No. 63-250325 Japanese Unexamined Patent Publication No. 2005-89414

Therefore, the present invention solves the above-mentioned conventional problems with respect to the antibacterial composition and the aerosol composition for antibacterial treatment using the antibacterial composition, has excellent dispersibility of the inorganic antibacterial agent, and is stable to the object with good handleability. It is an object of the present invention to provide an antibacterial composition capable of imparting antibacterial properties and an aerosol composition for antibacterial treatment using the same.

The problem to be solved by the present invention is as described above, and next, the means for solving this problem will be described.
As a result of diligent studies in view of the above problems, the present inventors have given a smectite group clay mineral as a dispersant in a mixed solvent of water and an alcoholic organic solvent as an antibacterial composition containing silver-supported zeolite. We have found that an unprecedented antibacterial composition that has excellent dispersibility of an inorganic antibacterial agent and can stably impart antibacterial properties to an object with good handleability can be obtained by appropriately blending the above. The invention was completed.

That is, in claim 1, the silver-supported zeolite as an inorganic antibacterial agent is 0.05 to 2.0% by mass, and the smectite group clay mineral is 0.02 to 6.0% by mass as a dispersant. It contains 20 to 60% by mass of an alcoholic organic solvent and water as a remaining amount.

In claim 2, the dispersant contains 30 parts by mass or more of smectite group clay minerals with respect to 100 parts by mass of silver-supported zeolite.

In claim 3, the dispersant is a smectite group clay mineral which is an aqueous smectite.

In claim 4, the dispersant is at least one in which the smectite group clay mineral is selected from the group consisting of saponite, stepnsite and hectorite.

In claim 5, the antibacterial agent contains an organic antibacterial agent having an aromatic ring.

In claim 6, the antibacterial composition according to any one of claims 1 to 5 and a propellant are contained.

In claim 7, the propellant is dimethyl ether and / or liquefied petroleum gas.

As an effect of the present invention, the dispersibility of the inorganic antibacterial agent is excellent, and the antibacterial property can be stably imparted to the object with good handleability.

It is a figure which showed the antibacterial property test result of the antibacterial property composition of this invention.

Next, a mode for carrying out the invention will be described.

The antibacterial composition of the present invention contains, as an inorganic antibacterial agent, silver-supported zeolite in which silver ions are supported on zeolite, which is a kind of porous ceramic. By containing silver ions in the skeleton structure of the zeolite, the silver-supported zeolite can exhibit both an antibacterial effect and a deodorant effect, and a synergistic effect can be achieved by using an organic antibacterial agent described later in combination. Can also be expected.

The silver-supported zeolite is not particularly limited as long as it exhibits a desired antibacterial effect in the antibacterial composition, and for example, the silver-supported amount in the silver-supported zeolite is in the range of 0.1 to 10.0% by mass. What is contained may be used. Examples of such silver-supported zeolite include commercially available Zeomic AW10N (trade name, manufactured by Sinanen Zeomic), Zeomic AJ10N (trade name, manufactured by Sinanen Zeomic), and Zeomic AK10N (trade name, manufactured by Sinanen Zeomic). It is available as such.

The blending amount of the inorganic antibacterial agent is used in the range of 0.05 to 2.0% by mass, preferably in the range of 0.1 to 1.0% by mass, and more preferably in the range of 0.1 to 1.0% by mass with respect to the total amount of the antibacterial composition. It is used in the range of 0.1 to 0.5% by mass. When the content of the inorganic antibacterial agent is less than 0.05% by mass, the antibacterial effect is low, while when it is more than 2.0% by mass, the dispersibility is reduced and the solid content is precipitated. This is because when an antibacterial composition is used as the undiluted solution of the above, there is a risk of injectability.

Since the antibacterial composition of the present invention complements the slow-acting antibacterial effect of the inorganic antibacterial agent and can be expected to exhibit immediate antibacterial performance, an organic antibacterial agent is preferably blended as needed. Known organic antibacterial agents include phenol-based, isothiazolone-based, pyridine / quinoline-based, imidazole-based, thiazole-based, alcohol-based, organic halogen-based, carboxylic acid-based, ester-based, ether-based, organic nitrogen-based, and containing. Examples include nitrogen-sulfur-based and quaternary ammonium salt-based. In particular, among these, an organic antibacterial agent having an aromatic ring is preferably used because it can be expected to have an effect of suppressing discoloration of the antibacterial composition.

Examples of the organic antibacterial agent having an aromatic ring include 4-isopropyl-3-methyl-phenol, 2-isopropyl-5-methylphenol, orthophenylphenol, methyl paraoxybenzoate, ethyl paraoxybenzoate, and paraoxybenzoic acid. Phenolic antibacterial agents such as propyl, isopropyl paraoxybenzoate, butyl paraoxybenzoate, isobutyl paraoxybenzoate, benzyl paraoxybenzoate, parachloromethoxylenol, parachloromethacresol; benzoisothiazolone antibacterial agents such as benzoisothiazolinone; A type of quaternary ammonium salt-based antibacterial agent such as benzalkonium chloride and benzethonium chloride; a type of alcohol-based antibacterial agent such as phenoxyethanol; a benzoimidazole-based antibacterial agent such as 2- (4-thiazolyl) -benzoimidazole; parahydroxy Examples thereof include a type of ester-based antibacterial agent such as benzoic acid methyl ester; and a type of ether-based antibacterial agent such as 2,4,4'-trichloro-2'-hydroxydiphenyl ether. Of these, phenolic antibacterial agents are preferably used.

The blending amount of the organic antibacterial agent is used in the range of 0.1 to 5.0% by mass, preferably in the range of 0.2 to 3.0% by mass, more preferably in the range of 0.1 to 5.0% by mass with respect to the total amount of the antibacterial composition. It is used in the range of 0.4 to 1.0% by mass. If the content of the organic antibacterial agent is less than 0.1% by mass, the antibacterial effect complementing the inorganic antibacterial agent is low, while if it is more than 5.0% by mass, depending on the amount of the alcoholic organic solvent in the solvent. This is because insoluble matter may precipitate.

In the antibacterial composition of the present invention, the inorganic antibacterial agent (silver-supported zeolite) is precipitated in a mixed solvent of water and an alcoholic organic solvent by appropriately blending a given smectite group clay mineral as a dispersant. -It is characterized by preventing aggregation and developing excellent dispersibility.

Here, the "smectite group clay mineral" refers to a layered silicate mineral belonging to the smectite group, and a layer composed of silicon and oxygen (silica tetrahedral layer) is a layer composed of aluminum and oxygen (aluminum octahedral layer). ) Is sandwiched between the structural layers. Examples of smectite-type clay minerals include trioctahedral smectites such as saponite, stepvensite, hectorite, and saponite; and dioctahedral smectites such as montmorillonite, byderite, and nontronite. At least one of these may be used alone, or two or more thereof may be used in combination.

The smectite group clay mineral is not particularly limited to any of natural products, purified products from natural products, and synthetic products, but aqueous smectites (non-organized smectites) exhibiting hydrophilicity are preferably used. For example, non-aqueous smectites (organized smectites) treated with a quaternary ammonium salt-type cationic surfactant such as alkyltrimethylammonium chloride, dialkyldimethylammonium chloride, and benzalkonium chloride have the effect of preventing precipitation and aggregation of silver-supporting zeolites. This is because it is low and may be inferior in dispersibility.

As the smectite group clay mineral, at least one selected from the group consisting of saponite, stephensite and hectorite, which are three octahedral smectites, is preferable among water-based smectites because of its excellent dispersibility of silver-supported zeolite. Used.

As the smectite group clay mineral, a commercially available product can be used as it is. Commercially available products of Hectorite, Smekton SWN (trade name, manufactured by Kunimine Industrial Co., Ltd.), Commercially available montmorillonite, Kunipia-G (trade name, manufactured by Kunimine Industrial Co., Ltd.), Kunipia-G10 (product) It is available as a name (manufactured by Kunimine Kogyo Co., Ltd.).

The blending amount of the dispersant is not particularly limited as long as the desired effect on the silver-supported zeolite is exhibited, and from the viewpoint of exhibiting dispersibility with respect to the silver-supported zeolite, a smectite group clay mineral with respect to 100 parts by mass of the silver-supported zeolite. Is used in a proportion of at least 30 parts by mass or more, preferably 30 to 300 parts by mass, and more preferably 50 to 200 parts by mass. Further, it is used in the range of 0.02 to 6.0% by mass with respect to the total amount of the antibacterial composition, preferably in the range of 0.05 to 2.0% by mass, and more preferably 0.1 to 1. It is used in the range of 0% by mass.

The antibacterial composition of the present invention lowers the alcohol concentration by allowing the above-mentioned antibacterial agents (inorganic antibacterial agent and organic antibacterial agent) and dispersant to be present in a mixed solvent of water and an alcoholic organic solvent. It is possible to develop a stable antibacterial effect while improving handleability. As the alcoholic organic solvent, ethanol, methanol, isopropyl alcohol or the like can be used, and by using ethanol or the like in this way, a bactericidal effect can be obtained at the same time.

Since the amount of the solvent is improved in handling when the antibacterial composition is used as the stock solution of the aerosol composition for antibacterial treatment, the amount of the alcoholic organic solvent is higher than the total amount of the antibacterial composition. It is used in the range of 20 to 60% by mass, preferably in the range of 25 to 55% by mass, and more preferably in the range of 30 to 50% by mass. The blending amount of water is the remaining amount in the total amount of the inorganic antibacterial agent, and is used in the range of 40 to 80% by mass, preferably 45 to 75% by mass with respect to the total amount of the antibacterial composition. , More preferably in the range of 50 to 70% by mass.

In addition to the above-mentioned inorganic antibacterial agents, organic antibacterial agents, dispersants and solvents, the antibacterial composition of the present invention includes antibacterial raw materials, deodorant raw materials, pH adjusters, rust preventives, fragrances and antioxidants. , Preservatives, pigments, UV absorbers, and other ingredients (blending agents) commonly used as stock solutions for antibacterial treatment aerosol compositions. The blending amount of these blending components can be a conventional general blending ratio as long as it does not contradict the object of the present invention.

The aerosol composition for antibacterial treatment of the present invention can be prepared by a known method such as blending the above-mentioned antibacterial composition with a propellant as a stock solution and pressure-filling a pressure-resistant container (aerosol type atomizer). For example, an aerosol composition (spray product) for a predetermined antibacterial treatment can be obtained by filling a pressure-resistant container as an undiluted solution with an antibacterial composition, then filling a propellant by filling with an undercup or the like, and then fixing the valve. can.

As the propellant, a gas contained for injecting the antibacterial composition or a known propellant that becomes a gas at the time of application can be used, and for example, dimethyl ether, liquefied petroleum gas, carbon dioxide gas, nitrogen gas, argon gas can be used. , Air, oxygen gas, freon gas and the like. Of these, dimethyl ether or liquefied petroleum gas is preferably used because the scattering of spray particles can be easily suppressed. At least one of these may be used alone, two or more thereof may be used in combination, and when two types are used in combination, dimethyl ether and liquefied petroleum gas may be used in combination. ..

The blending amount of the propellant is used in the range of 10 to 60% by mass, preferably in the range of 15 to 40% by mass, based on the total amount of the aerosol composition. If the amount of the propellant is too small, a good spray state cannot be obtained, while if the amount of the propellant is too large, the relative amount of undiluted solution that can be filled in the container becomes small and the injection is performed. The pressure becomes stronger and the usability becomes worse. The preferable injection pressure is 0.1 to 1.0 MPa.

In the aerosol composition for antibacterial treatment of the present invention, after spraying on the object, the mixed solvent is volatilized and dried in a practical time without dripping, and the antibacterial component (inorganic system) is applied to any part of the object. Antibacterial agents and organic antibacterial agents) can be added to impart antibacterial properties. As an object, it is useful as a spray product for textile products where bacterial cells are easily attached partially and the growth of bacterial cells may cause serious health and hygiene problems, but it is limited to textile products. It's not something.

The objects of the aerosol composition for antibacterial treatment include, for example, sheets, rugs, mats, sofas, carpets, clothes, towels, slippers, hats, etc., as well as textile products such as non-woven cloths, tents, ropes, etc. can. In addition to textile products, for example, furniture such as tons, closets, cupboards, tables, chairs, sofas; electric appliances such as refrigerators, gas ranges, range hoods, ventilation fans, lamp shades, chandeliers, and air conditioners; interior and exterior walls. , Bathrooms, toilets, dwellings around kitchens, etc.

Hereinafter, examples and comparative examples of the present invention will be described. The present invention is not limited to the examples shown below.

<Raw materials used>
The details of the raw materials (blended components) used in the antibacterial composition of this example are as follows.

As the inorganic antibacterial agent, silver-supported zeolite (silver-supported amount 0.5% by mass, Zeomic AW10N / manufactured by Sinanen Zeomic) was used.

As the organic antibacterial agent, the following organic antibacterial agents A to I were used. The organic antibacterial agents A to F are antibacterial agents having an aromatic ring, and among them, the organic antibacterial agents A to C are phenolic antibacterial agents.
Organic antibacterial agent A: Butyl paraoxybenzoate (Hokubarin B-100 / manufactured by Hokuko Sangyo Co., Ltd.)
Organic antibacterial agent B: 4-isopropyl-3-methylphenol (Biosole / manufactured by Osaka Kasei Co., Ltd.)
Organic antibacterial agent C: Parachloromethaxylenol (Hokubarin MX / manufactured by Hokuko Sangyo Co., Ltd.)
Organic antibacterial agent D: Phenoxyethanol (Nieuport EFP / Sanyo Chemical Industries, Ltd.)
Organic antibacterial agent E: Benzalkonium chloride (manufactured by Kanto Chemical Co., Inc.)
Organic antibacterial agent F: Benzisothiazolinone (Hokuside BT / manufactured by Hokuko Sangyo Co., Ltd.)
Organic antibacterial agent G: Octylisothiazolinone (Levanax BS-50 / manufactured by Shoei Kagaku Co., Ltd.)
Organic antibacterial agent H: Sodium pyridine (Hokuside N38 / manufactured by Hokuko Sangyo Co., Ltd.)
Organic antibacterial agent I: Chloromethylisothiazolinone (Hokuside R-150 / manufactured by Hokuko Sangyo Co., Ltd.)

As the dispersant, the following dispersants A to J were used.
Dispersant A: Saponite (Smecton SA / Kunimine Kogyo Co., Ltd.)
Dispersant B: Stephen Sight (Smecton ST / Kunimine Kogyo Co., Ltd.)
Dispersant C: Hectorite (Smecton SWN / Kunimine Kogyo Co., Ltd.)
Dispersant D: Montmorillonite (Kunipia-G / Kunimine Kogyo Co., Ltd.)
Dispersant E: Montmorillonite (Kunipia-G10 / Kunimine Kogyo Co., Ltd.)
Dispersant F: Organic smectite (Smecton SAN / Kunimine Kogyo Co., Ltd.)
Dispersant G: Organic smectite (Smecton STN / Kunimine Kogyo Co., Ltd.)
Dispersant H: Organic smectite (Smecton SEN / Kunimine Kogyo Co., Ltd.)
Dispersant I: Special polycarboxylic acid type polymer surfactant (Poise 520 / manufactured by Kao Corporation)
Dispersant J: Special polycarboxylic acid type polymer surfactant (Poise 530 / manufactured by Kao Corporation)

Ethanol was used as the alcoholic organic solvent.

<Dispersibility test of antibacterial composition>
A predetermined sample (antibacterial composition) is obtained by blending an inorganic antibacterial agent, an organic antibacterial agent, a dispersant and a solvent as compounding components in the proportions (mass%) shown in Table 1 below and stirring them. (Examples 1 to 11 and Comparative Examples 1 to 4). Next, each sample (antibacterial composition) was placed in a transparent glass bottle, left in an atmosphere of 50 ° C. for one week, and then the dispersibility was evaluated based on the dispersed state of the ingredients when each sample was re-stirred. .. The evaluation was performed by a three-point method, in which "○" was used for easy redispersion, "△" was used for redispersion requiring strong stirring, and "×" was used for sedimentation / aggregation and redispersion was difficult. ..

Table 1 shows the results of a dispersibility test of antibacterial compositions prepared by changing the types of dispersants (dispersants A to J) and the blending amounts. From this result, the antibacterial composition (Examples 1 to 11) in which the compounding components and amounts of the antibacterial agent (inorganic antibacterial agent and organic antibacterial agent), the dispersant and the solvent are suitable is sufficient even after a lapse of time. It has redispersibility and shows excellent stability that can maintain dispersibility for a long period of time.

<Discoloration test of antibacterial composition>
Inorganic antibacterial agents, organic antibacterial agents, dispersants and solvents are blended in the proportions (% by mass) shown in Table 2 below, and the mixture is stirred to obtain a predetermined sample (antibacterial composition). Obtained (Examples 12 to 17, Comparative Examples 5 to 7). Next, each sample (antibacterial composition) was placed in a transparent glass bottle, exposed outdoors for 3 days at normal temperature and pressure, and then the color changeability was evaluated by visually confirming the color state of each sample. The evaluation was performed by a two-point method in which "○" was used when there was little or slight discoloration (white to slightly yellow), and "x" was used when there was severe discoloration (yellow to brown).

Table 2 shows the results of discoloration tests of antibacterial compositions prepared by changing the types of organic antibacterial agents (organic antibacterial agents A to I). From this result, in the antibacterial composition (Examples 12 to 17) in which the compounding components and amounts of the antibacterial agent (inorganic antibacterial agent and organic antibacterial agent), dispersant and solvent are suitable, discoloration after aging is observed. It was suppressed and showed excellent stability.

<Antibacterial test of antibacterial composition>
Inorganic antibacterial agents, organic antibacterial agents, dispersants and solvents were blended in the proportions (% by mass) shown in Table 3 below as compounding components, and these were stirred to obtain a predetermined sample (composition). (Example 18, Comparative Example 8). Next, each sample (composition) was impregnated into a paper disk (diameter 8 mm), and this was placed in the center of a normal agar medium (bacillus species: Bacillus subtilis and Escherichia coli) on a petri dish (diameter 90 mm) at 29 ° C. After culturing for 24 hours in the above atmosphere, the antibacterial property was evaluated by visually confirming the presence or absence of a blocking circle. The evaluation was performed by a two-point method in which the case where the blocking circle was clearly observed was marked with "○" and the case where the blocking circle was not observed was marked with "x".

Table 3 shows the results of antibacterial test of the antibacterial composition. From this result, the antibacterial composition in which the antibacterial agent (inorganic antibacterial agent and organic antibacterial agent), the dispersant and the solvent are suitably blended together with the figure showing the presence or absence of antibacterial property for each bacterial species shown in FIG. The substance (Example 18) was confirmed to exhibit antibacterial properties, and was shown to be useful as a stock solution of an aerosol composition for antibacterial treatment.

<Solubility test and dryness test of aerosol composition>
Inorganic antibacterial agents, organic antibacterial agents, dispersants and solvents are blended as compounding components in the proportions (% by mass) shown in Table 4 below, and the mixture is stirred to prepare a predetermined antibacterial composition. 20 ml of each antibacterial composition was collected in a pressure-resistant container, and each pressure-resistant container was filled with a propellant having an injection pressure adjusted to 0.3 MPa to obtain a predetermined sample (aerosol composition) (Examples 19 to 19). 20, Comparative Examples 9 to 10). Next, first, the solubility is evaluated based on the dissolution state of each sample, and the entire amount of each sample (aerosol composition) is sprayed on a fabric automobile seat (monopod), and the inside of the vehicle is closed at room temperature. The drying property was evaluated by measuring the time (minutes) required for the surface of the automobile seat to dry after being left to stand. The solubility evaluation was carried out by a two-point method in which "◯" was given when no insoluble matter was observed and "x" was given when precipitation of insoluble matter was observed.

Table 4 shows the results of the solubility test and the dryness test of the aerosol composition prepared by changing the blending amount of the alcoholic organic solvent. From this result, in the aerosol composition (Examples 19 to 20) in which the blending amount of the alcoholic organic solvent is suitable, there is no precipitation of insoluble matter and the solubility is good, and there is a risk of causing defects such as clogging at the time of spraying. It was shown that there was no drying time, and it was confirmed that the drying time was within 20 minutes and the drying property was practical.

Claims (7)

As an antibacterial agent, silver-supported zeolite, which is an inorganic antibacterial agent, is used in an amount of 0.05 to 2.0% by mass.
Smectite group clay mineral as a dispersant was 0.02 to 6.0% by mass.
20-60% by mass of alcoholic organic solvent,
Water as the remaining amount and
An antibacterial composition comprising. The antibacterial composition according to claim 1, wherein the dispersant contains a smectite group clay mineral in a proportion of 30 parts by mass or more with respect to 100 parts by mass of silver-supported zeolite. The antibacterial composition according to claim 1 or 2, wherein the dispersant is an aqueous smectite of the smectite group clay mineral. The antibacterial composition according to any one of claims 1 to 3, wherein the dispersant is at least one selected from the group consisting of saponite, stepnsite and hectorite as a smectite group clay mineral. The antibacterial composition according to any one of claims 1 to 5, which contains an organic antibacterial agent having an aromatic ring as the antibacterial agent. An aerosol composition for antibacterial treatment, which comprises the antibacterial composition according to any one of claims 1 to 5 and a propellant. The aerosol composition for antibacterial treatment according to claim 6, wherein the propellant is dimethyl ether and / or liquefied petroleum gas.

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