JP2006193664A - Aqueous antibacterial cleaning agent - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antibacterial cleaning agent effective for cleaning an antibacterial cleaning object such as stains attached to the stained part in a humid room accompanying the contamination with microorganisms such as the evaporator of an air conditioner or a cabin of a vehicle such as an automobile and keeping the antibacterial effect even after the sterilizing cleaning treatment. <P>SOLUTION: The aqueous antibacterial cleaning agent has a composition obtained by compounding 1-100 pts.mass of an organic antibacterial mildew-proofing agent, 10-100 pts.mass of a rust-proofing agent, 10-100 pts.mass of a surfactant and 50-300 pts.mass of a water-soluble organic solvent. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention cleans dirt adhered to an antibacterial object to be cleaned, for example, an evaporator part of an air conditioner, a contaminated part in a humid room with microbial contamination such as a vehicle interior of a vehicle such as an automobile, and a sterilization cleaning. The present invention relates to an aqueous antibacterial cleaning agent that further retains an antibacterial effect and a mist type antibacterial cleaning product filled with the same, such as an aerosol product.

Conventional antibacterial and cleaning chemicals for air conditioners include mousse-type and direct-injection aerosol types, gun-spray types, and the like, with various application methods and performance levels.
The mousse type, for example, when applied to an air conditioner, spreads the drug efficiently in the air conditioner circuit without crushing into bubbles, so that the drug can be distributed not only to the evaporator section but also to its peripheral devices. When applying from outside air inlets such as outside air inlets and blower motor fans, bubbles may enter the motor's electric drive part or bubbles may reach the fan outlet, causing problems such as short circuits. There are problems such as causing the drive to stop, and causing bubbles to blow out and cause contamination.
The aerosol type has a problem that the portion to be spray-coated becomes fine, so that if the entire contaminated part is to be sufficiently treated, the coating operation time becomes long and a large amount of medicine must be used.
As a gun spray type, for example, a chemical that performs cleaning and antibacterial treatment of an evaporator part and a treatment method using the same are known (see Patent Document 1), which is also used for an evaporator part in an air conditioner circuit, etc. In the case of directly cleaning the gap portion in a narrow space, there is a problem that the drug foams and causes the trouble of the electric system and the contamination due to the indoor scattering as described above.

In addition, the aqueous cleaning agent generally contains a disinfectant for microorganisms that propagate in the contaminated area and generate malodors during the cleaning process of contaminants, but the disinfecting action is temporary, and the composition component Is also water-soluble, and there is a problem that the antibacterial sustained effect after treatment is poor.
Therefore, it is not unthinkable to use a film-forming agent such as a water-soluble resin, but in such a case, dirt such as dust gradually adheres to the formed film part, and microorganisms also grow, and the treatment agent itself There is a concern that it will be difficult to exert the effect.

JP-A-9-108311 (Claims and others)

  In view of such circumstances, the problem of the present invention is that it adheres to an antibacterial cleaning object, for example, an evaporator part of an air conditioner, a contaminated part in a humid room accompanied by microbial contamination such as the interior of a vehicle such as an automobile, etc. An object of the present invention is to provide an antibacterial cleaning agent capable of cleaning dirt and remaining an antibacterial effect even after sterilization cleaning.

  As a result of various studies to develop an aqueous antibacterial cleaning agent having the above-mentioned preferable characteristics, the present inventors have combined specific composition components (particularly, specific surfactants and water-soluble solvents). It has been found that it contributes to solving the problems, and the present invention has been made based on this finding.

That is, the present invention is as follows.
(1) 1 to 100 parts by weight of an organic antibacterial / antifungal agent, 10 to 100 parts by weight of a rust preventive, 10 to 100 parts by weight of a surfactant, and 50 to 300 parts by weight of a water-soluble organic solvent An aqueous antibacterial cleaning agent characterized by comprising:
(2) Contains 0.1 to 10.0% by weight of organic antibacterial and antifungal agent, 1.0 to 10% by weight of rust preventive, 1 to 10% by weight of surfactant and 5 to 30% by weight of water-soluble organic solvent An aqueous antibacterial cleaning agent characterized by
(3) Aqueous antibacterial cleaning according to (1) or (2), wherein the organic antibacterial / antifungal agent is deposited and remains on the coated surface when fixed in water, and remains antibacterial after washing with water after application. Agent.
(4) The aqueous antibacterial cleaning agent according to (1), (2) or (3), wherein a rust preventive agent is deposited at the time of water dilution application and foamability is suppressed.
(5) The aqueous antibacterial cleaning agent according to any one of (1) to (4), wherein the pH is neutral or weakly acidic.
(6) The aqueous antibacterial cleaning agent according to any one of (1) to (5), which is applied at a discharge pressure.
(7) The aqueous antibacterial cleaning agent according to (6), wherein the discharge pressure is air pressure.
(8) A mist type antibacterial cleaning product filled with the aqueous antibacterial cleaning agent according to any one of (1) to (7).

Antibacterial and antifungal agents used in the aqueous antibacterial cleaning agent of the present invention (hereinafter sometimes referred to as “this agent”) have no adverse effect on the material to be cleaned, safety to the human body, sustained effect, etc. What is excellent in this point is preferable.
As such antibacterial and antifungal agents, they exhibit a wide range of effects on various bacteria, molds, etc. at a low concentration, and can remain antibacterial even after rinsing with water during washing treatment. As such, the concentration of the surfactant and the water-soluble organic solvent is decreased by dilution of, for example, those that are hardly soluble in water, especially those that are solubilized in water by a surfactant or a water-soluble organic solvent. Examples of such materials include those that are likely to precipitate in water and those that are not sparingly soluble in water but are easily adsorbed on the surface of materials to be cleaned (for example, metals, resins, etc.). Specifically, parachlorometaxylenol, parachloro Metacresol, 1,2-benzisothiazolin-3-one, Nn-butyl-1,2-benzisothiazolin-3-one, 2,4,4'-trichloro-2'-hydroxy-di Phenyl ether, 3,4,4'-trichlorocarbanilide, 2-isopropyl-5-methylphenol, 2-isopropyl-5-methylphenol, 3-methyl-4-isopropylphenol, Na-omadine, Zn-omadine, 2,2'-dithio-bis- (pyridine-1-oxide), glycerol fatty acid ester, butyl-p-hydroxybenzoate, ethyl-p-hydroxybenzoate, methyl-p-hydroxybenzoate, propyl-p-hydroxybenzoate, 2 -Benzyl-4-chlorophenol, N- (fluorodichloromethylthio) -phthalimide and the like are preferably used.
These antibacterial and antifungal agents may be used alone or in combination of two or more.

Further, in the aqueous antibacterial cleaning agent of the present invention, a rust preventive agent is blended in order to improve the stability and corrosion resistance of the material to be treated, particularly a metal material.
Examples of the rust preventive include dicarboxylic acid and benzotriazole, other dicyclohexylammonium nitrates, p-tert-butylbenzoic acid and salts thereof, Ibit (Asahi Chemical Industry Co., Ltd., corrosion inhibitor), and the like. Among them, viscous, especially viscous dicarboxylic acid-based ones tend to adhere to the surface of the material to be cleaned during precipitation, and thus remain on the surface of the material to be cleaned. The dicarboxylic acid salt is preferable because it can be easily facilitated, and further, the deodorizing effect is exhibited by reacting with a nitrogen-containing compound such as ammonia or amines which are usually a source of malodor.
The aqueous antibacterial cleaning agent of the present invention is generally provided as a stock solution. When actually used, the aqueous antibacterial cleaning agent is diluted with water. When the rust preventive agent is deposited, the precipitation rust preventive agent, especially the dicarboxylic acid type rust preventive agent, has its own antifoaming property, and therefore when it is washed with its diluted solution. The foaming property is suppressed, and it is possible to suppress the adverse effects on the members other than the cleaning part due to the generation of bubbles and the scattering trouble due to the wind of the remaining bubbles.

Examples of the dicarboxylic acid-based rust inhibitor include those having 6 to 30 carbon atoms, preferably 8 to 25 carbon atoms, such as adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, and 1,9-nona. Saturated aliphatic dicarboxylic acids such as methylenedicarboxylic acid, 1-, 10-decamethylenedicarboxylic acid, 1-, 11-undecamethylenedicarboxylic acid, 1-, 12-dodecamethylenedicarboxylic acid, salts thereof, alkenylsuccinic acid, And salts thereof (wherein the alkenyl group is C10-20), among them azelaic acid, sebacic acid, 1-, 9-nonamethylenedicarboxylic acid, 1-, 10-decamethylenedicarboxylic acid and salts thereof. Commercially available products are Diacid 1550 (manufactured by Harima Chemicals), IPU-22 (manufactured by Okamura Oil Co., Ltd.), DSA, PDSA-DA, PDSA-D. , Sanhibita 102 (or more, manufactured by Sanyo Chemical Industries, Ltd.), and the like. Such a carboxylic acid salt is preferably a neutralized salt dissolved in water with an amine or the like.
These rust preventives may be used alone or in combination of two or more.

Further, in the aqueous antibacterial cleaning agent of the present invention, the above-mentioned dicarboxylic acid rust preventive agent which dissolves each of the above active ingredients stably in an aqueous medium, for example, exhibits the organic antibacterial antifungal agent and the deodorizing effect. Many of these are poorly soluble in water, and those are also solubilized in an aqueous medium, and when this agent is applied, a surfactant is blended in order to exhibit sufficient effects. The
As the surfactant, nonionic compounds having excellent solubilizing ability are preferable, and among them, those having slightly low water solubility, particularly those having an HLB of 8 to 11 are preferable. This is because if the water solubility is too high, the organic antibacterial / antirust agent may flow out during rinsing with water.
Examples of the nonionic surfactant include polyoxyethylene alkyl ether, alkylamine ethylene oxide adduct, alkyl diethanolamide, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene fatty acid methyl ester (fatty acid polyoxyethylene methyl ether), Examples thereof include oxyethylene polyoxypropylene glycol and alkylamine oxide.
These may be used alone or in combination of two or more.

Further, in the aqueous antibacterial cleaning agent of the present invention, a water-soluble organic solvent is blended for the purpose of assisting stable dissolution of each active ingredient, promoting drying after application, stabilization at low temperature storage, and the like.
As the water-soluble organic solvent, those which dissolve each of the above-mentioned components and act to disperse them in water, and in particular, if the amount of the surfactant is increased in order to improve detergency and solubility, foaming properties increase. Therefore, in order to aid solubility, those having excellent solubilization ability are preferable, and examples of such include alcohol solvents, glycol solvents, glycol ether solvents, ketone solvents, etc. Ethanol, isopropyl alcohol, n-propyl alcohol, ethylene glycol butyl ether, ethylene glycol ethyl ether, 3-methoxy-3-methyl-1-butanol, diethylene glycol butyl ether, diethylene glycol ethyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, dip Examples include pyrene glycol monomethyl ether, 3-methyl-1,3-butanediol, 2-methyl-1,3-propanediol, and tert-butanol. Among them, alcohol, especially isopropyl alcohol, n- Propyl alcohol, ethylene glycol butyl ether, 3-methoxy-3-methyl-1-butanol, and propylene glycol monoethyl ether are preferred.
These may be used alone or in combination of two or more.

  The aqueous antibacterial cleaning agent of the present invention further contains water, and the amount thereof may be appropriately changed according to the purpose of use and the like, but preferably occupies the remaining amount with respect to the total amount of the respective components. It is good.

In the aqueous antibacterial cleaning agent of the present invention, if necessary, a deodorant may be appropriately blended to enhance the deodorant property.
As a deodorant, there are various odors, tobacco odors, mold odors, and resin odors generated from the parts to be treated, which have a wide range of effects, such as natural extracts and ammonia contained in the air. Examples include components such as tobacco smoke and sweat, and organic acids that react with malodor-causing substances such as spoiled odors such as methyl mercaptan and trimethylamine.
Examples of the natural extract include those derived from medicinal herbs such as tea, bamboo, bamboo shoots, dokudami, ginkgo, black pine, giraffe, holly, Japanese oak, lilac, guinea pig, and forsythia, and examples of organic acids include citric acid. , Malic acid, fumaric acid, lactic acid, ricinoleic acid and salts thereof, and the like. Examples of the salt include alkali metal salts such as sodium salt and zinc salts such as zinc ricinoleate.
As the deodorant, an antibacterial deodorant having further sterilizing properties may be used.
As the antibacterial deodorant, silver ions are preferable, and examples of the substance containing them include water-soluble silver compounds such as silver acetate, silver nitrate, silver carbonate, and silver complexes.
These deodorants may be used alone or in combination of two or more.

  The aqueous antibacterial cleaning agent of the present invention is preferably prepared by using dicarboxylic acid or a salt thereof as a rust preventive agent and adjusting the pH to neutral or weakly acidic, preferably pH 5 to 7, particularly pH 6 to 7.

  In the aqueous antibacterial cleaning agent of the present invention, the blending ratio between each composition component is 1 to 100 parts by weight of an organic antibacterial and antifungal agent, 10 to 100 parts by weight of a rust preventive, 10 to 100 parts by weight of a surfactant, and water. In the range of 50 to 300 parts by weight of the organic solvent, especially 3 to 20 parts by weight of the organic antibacterial and antifungal agent, 20 to 60 parts by weight of the rust preventive, 20 to 60 parts by weight of the surfactant and 80 to 250 of the water-soluble organic solvent. It is suitable to be in the range of parts by mass.

In the aqueous antibacterial detergent having such a composition, if the blending ratio of the organic antibacterial and antifungal agent is too small, the effect of addition becomes insufficient, and if it is too large, the material to be treated may be adversely affected. Yes, and stability is also worsened.
Further, if the blending ratio of the rust preventive agent is too small, the protective effect on the material to be treated is insufficient, and if it is excessive, it is difficult to dissolve and separate easily.
If the proportion of the surfactant is too small, the stability is impaired, the separation becomes easy, the cleaning power is reduced, and if it is excessive, the surface of the material to be treated such as the air conditioner material resin surface is adversely affected. There is a fear.
If the blending ratio of the water-soluble organic solvent is too small, the stability is not sufficient, it becomes easy to separate, and if it is too much, there is a possibility of adversely affecting the treated material surface such as the air conditioner material resin surface, There is a risk of reaching an inflammable and explosive concentration during application, and there is a risk of electrical system troubles.
When a deodorant, which is an optional component, is blended, if the blending ratio is too small, the effect of the addition becomes insufficient, and if it is excessive, when applied to the treated material, depending on the treated material May cause crystal precipitation on the surface, which may cause defects.

When using the aqueous | water-based antibacterial cleaning agent of this invention as a stock solution, about the compounding quantity of each composition component, 0.1-10 mass% of organic antibacterial antifungal agents, 1-10 mass% of rust preventive agents, surfactant 1 In the range of 10% by mass and 5-30% by mass of the water-soluble organic solvent, in particular, the organic antibacterial / antifungal agent 0.1-6% by mass, the rust inhibitor 2-8% by mass, the surfactant 2-8% by mass and The water-soluble organic solvent is suitably in the range of 8 to 25% by mass.
The aqueous antibacterial detergent provided as a stock solution in this way is actually diluted with water when used for washing treatment, and the dilution ratio is usually 3 to 100 times, preferably about 5 to 20 times.

The aqueous antibacterial cleaning agent of the present invention is preferably applied at a discharge pressure, for example, air pressure, and the fluid used is preferably a gas, or a gas that becomes gas upon application, for example, air, dimethyl ether, LPG, LNG, compression Nitrogen gas, compressed carbon dioxide gas, compressed nitrous oxide gas, argon, helium and the like can be mentioned, and among others, it is provided as a mist type antibacterial cleaning product in which a container is filled with an aqueous antibacterial cleaning agent.
When using air as a fluid, in order to disperse the antibacterial substance as a mist, use it as a trigger spray type or dispenser type product, or as a gun blow type or aerosol type product with an air pressure not exceeding 1 MPa. Is preferred.

The optimum form of application of the aqueous antibacterial cleaning agent of the present invention is to spray by air pressure, thereby stably dissolving the composition component in the solvent without causing precipitation of the liquid agent and finer mist. In particular, it is preferable to spray as fine particles of about 0.1 to 10 μm.
In that case, it is preferable to select the blend ratio of the antibacterial cleaning agent and the propellant in the range of 90 to 70 parts by mass and 10 to 30 parts by mass, respectively. If the blending ratio of the propellant is less than 10 parts by mass, the amount of the propellant itself is insufficient and sufficient pressure as an aerosol cannot be secured, and therefore, it becomes difficult to eject the liquid agent in a fine mist, and 30 parts by mass. If it exceeds 1, the pressure as an aerosol will increase too much and may burst at high temperatures, and the solubility of the composition components in the solvent will decrease.

As an application method of the aqueous antibacterial cleaning agent of the present invention, the antibacterial cleaning object, for example, an evaporator part of an air conditioner, a contaminated part in a humid room accompanied by microbial contamination such as a vehicle interior of a vehicle such as an automobile, etc. For example, a method of diluting an antibacterial detergent with water as appropriate and performing an application treatment such as spraying.
In particular, relatively fine dirt such as mold spores, bacteria, tobacco dust, carbon, etc. are mainly attached to the air circuit of the air conditioner, especially the surface of the evaporator part, not so much dust. When removing efficiently, the method of spraying uniformly the mist containing the said disinfection and washing | cleaning component is suitable.
After the antibacterial cleaning treatment, even if there are metal parts, such as fins in the evaporator part, the rust prevention of the metal part is prevented by the action of the rust preventive agent, and the adverse effect due to the adhesion of the antibacterial antifungal agent Is suppressed.
In addition, when applying this agent to an air conditioner, the application part of this agent is highly hydrophilic, and even if condensation occurs, it is difficult for them to become polka dots. It is difficult to cause deterioration of cooling efficiency due to.

  The aqueous antibacterial cleaning agent of the present invention cleans dirt adhered to an antibacterial cleaning object, such as an evaporator part of an air conditioner, a contaminated part of a humid room accompanied by microbial contamination such as a vehicle interior of an automobile or the like. In addition, there is a remarkable effect that the antibacterial effect can remain even after the sterilization washing.

Next, the best mode for carrying out the present invention will be described with reference to examples, but the present invention is not limited to these examples.
Evaluation of the sample of each example was performed by the method shown below. The amount of each component is mass%.

(1) Stability:
A sample was prepared by mixing each composition component well, refrigerated at 4 ° C. and allowed to stand for 1 week, and then its stability was visually judged according to the following evaluation criteria.
○: The liquid is transparent and there is no floating or precipitation of precipitates.
X: The liquid is cloudy and there is floating or precipitation of precipitates.

(2) Antibacterial properties:
After the medium for the sensitive disk was dispensed into a petri dish and solidified, E. coli (Escherichia Coli) was applied to create a measuring plate with a diameter of 90 mm, and the sample was soaked on it, 8 mm in diameter, thick A 1.5 mm thick paper disk was placed and incubated at 30 ° C. for 24 hours, and then judged according to the following evaluation criteria based on the diameter of the blocking circle.
○: 20 mm or more Δ: 10 mm or more and less than 20 mm ×: less than 10 mm

(3) Antifungal property:
After potato dextrose agar medium was dispensed into a petri dish and solidified, black mold (Aspergillus Niger) was applied to make a measuring plate with a diameter of 90 mm, and a sample was immersed on it, 8 mm in diameter, thick A 1.5 mm thick paper disk was placed and cultured at 25 ° C. for 24 hours, and then judged according to the following evaluation criteria based on the diameter of the inhibition circle.
○: 20 mm or more Δ: 10 mm or more and less than 20 mm ×: less than 10 mm

(4) Deodorant:
Add 0.1 cc of distilled water to a malodorous source (0.5% ammonia-ethanol solution 0.2 cc), leave it in a 5 L desiccator for 30 minutes, and then measure the concentration with a gas detector manufactured by Gastec. Control.
Further, 0.1 cc of each sample was added in place of distilled water, the concentration was measured in the same manner as described above, the ratio of the difference from the control was determined as the deodorization rate, and the numerical value was determined according to the following evaluation criteria.
○: Deodorization rate 70% or more △: Deodorization rate 30% or more and less than 70% ×: Deodorization rate less than 30%

(5) Detergency:
JIS test powder 1,5 types, JIS test powder 1,7 types, carbon black, beef tallow and isopropyl alcohol were mixed in a ratio of 8: 2: 0.1: 1: 9, respectively, and an aluminum plate After the coating was applied on the substrate and dried at 50 ° C. for 4 hours, the mass (referred to as B) was measured. This artificial contamination plate was fixed, washed with a gun fixed 5 cm immediately before it, dried at 50 ° C. for 4 hours, and then its mass (referred to as C) was measured.
Next formula Cleaning rate (%) = (C−A) × 100 / (B−A)
The washing rate was determined by the following evaluation criteria.
○: Cleaning rate of 35% or more △: Cleaning rate of 20% or more and less than 35% ×: Cleaning rate of less than 20%

(6) Antifoam properties:
The height of bubbling immediately after the test of the sample was determined by the Ross Miles test method in accordance with JIS K3362, and judged according to the following evaluation criteria.
○: Less than 50 mm Δ: 50 mm or more and less than 150 mm ×: 150 mm or more

A sample was prepared according to the formulation (% by mass) shown in Table 1, and the sample was determined by the above evaluation method.
The results are shown in Table 2.

A sample was prepared according to the formulation (% by mass) shown in Table 1, and the sample was determined by the above evaluation method.
The results are shown in Table 2.

A sample was prepared according to the formulation (% by mass) shown in Table 1, and the sample was determined by the above evaluation method.
The results are shown in Table 2.

A sample was prepared according to the formulation (% by mass) shown in Table 1, and the sample was determined by the above evaluation method.
The results are shown in Table 2.

A sample was prepared according to the formulation (% by mass) shown in Table 1, and the sample was determined by the above evaluation method.
The results are shown in Table 2.

Comparative Examples 1-3
Samples of each comparative example were prepared according to the formulation (% by mass) shown in Table 1, and these samples were determined by the above evaluation method.
The results are shown in Table 2.

表中、ＩＰＵ−２２は岡村製油社製ジカルボン酸である。

In the table, IPU-22 is a dicarboxylic acid manufactured by Okamura Oil Co., Ltd.

  The aqueous antibacterial cleaning agent of the present invention cleans dirt attached to an antibacterial cleaning target, for example, an evaporator part of an air conditioner, a contaminated part in a humid room accompanied by microbial contamination such as a vehicle interior of a vehicle such as an automobile, etc. Further, it can be suitably used for the work of remaining the antibacterial effect even after sterilization washing.

Claims (8)

  1-100 parts by mass of organic antibacterial / antifungal agent, 10-100 parts by mass of rust inhibitor, 10-100 parts by mass of surfactant and 50-300 parts by mass of water-soluble organic solvent An aqueous antibacterial cleaning agent characterized by   It contains 0.1 to 10.0% by mass of an organic antibacterial and antifungal agent, 1.0 to 10% by mass of a rust inhibitor, 1 to 10% by mass of a surfactant, and 5 to 30% by mass of a water-soluble organic solvent. A featured aqueous antibacterial detergent.   3. The aqueous antibacterial detergent according to claim 1 or 2, wherein the organic antibacterial and antifungal agent is deposited and remains and fixed on the coated surface at the time of water dilution application and remains antibacterial after washing with water after application.   The aqueous antibacterial cleaning agent according to claim 1, 2 or 3, wherein a rust preventive agent is deposited at the time of water dilution application and foamability is suppressed.   The aqueous antibacterial detergent according to any one of claims 1 to 4, wherein the pH is neutral or weakly acidic.   The aqueous antibacterial cleaning agent according to any one of claims 1 to 5, which is applied at a discharge pressure.   The aqueous antibacterial cleaning agent according to claim 6, wherein the discharge pressure is air pressure.   A mist type antibacterial cleaning product filled with the aqueous antibacterial cleaning agent according to any one of claims 1 to 7.