Aerosol composition for cleaning

Abstract

To provide an aerosol composition for cleaning in which the generation of fine bubbles is promoted and an excellent cleaning effect can be obtained even when the concentration of a cleaning component is low.SOLUTION: An aerosol composition for cleansing, comprising a cleansing solution and a pressurized gas, wherein the cleansing solution comprises a nonionic surface active agent and water, and comprises 3 * 106 / mL or more of dispersed particles having a mean particle size of 30 to 150nm.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a cleaning aerosol composition. More specifically, the present invention relates to a cleaning aerosol composition that promotes the generation of ultrafine bubbles and provides excellent cleaning effects even when the concentration of cleaning ingredients is low. [Background technology]

[0002] Conventionally, cleaning compositions have been developed that remove dirt by generating bubbles and bringing the bubbles into contact with the object to be cleaned. Patent Document 1 discloses a cleaning composition that contains 0.1 to 60% by weight of an alkaline agent and / or 0.1 to 60% by weight of an acid agent, and fine bubbles with a diameter of 100 μm or less. Patent Document 2 discloses a hard surface cleaner in which a cleaning liquid with a pH of 11 or higher and thixotropic viscosity and nitrogen gas as a propellant are filled in an aerosol container. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-899902 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-152280 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the detergent composition of Patent Document 1 contains high concentrations of cleaning ingredients such as alkaline agents, acid agents, and surfactants, and requires a large amount of water to remove the cleaning ingredients along with the dirt.Furthermore, the hard surface cleaner of Patent Document 2 also contains high amounts of alkaline agents, nonionic surfactants, and / or anionic surfactants, and requires a large amount of water to remove the cleaning ingredients along with the dirt.

[0005] The present invention has been made in view of the above-mentioned conventional problems, and aims to provide a cleaning aerosol composition that promotes the generation of ultrafine bubbles and provides excellent cleaning effects even when the concentration of cleaning components is low. [Means for solving the problem]

[0006] The present invention, which solves the above problems, mainly comprises the following configuration.

[0007] (1) A cleaning solution and a compressed gas, the cleaning solution containing a nonionic surfactant and water, and 3 × 10 dispersed particles having an average particle diameter of 30 to 150 nm. 6 A cleaning aerosol composition containing at least 100 mg / mL of the active ingredient.

[0008] According to this configuration, when the cleaning aerosol composition is filled in an aerosol container, some compressed gas is dissolved in the cleaning liquid. When the dissolved compressed gas is sprayed to the outside, it easily generates ultrafine bubbles due to dispersed particles. As a result, the spray can exhibit excellent cleaning effects even when the concentration of cleaning components is low. Here, dispersed particles include air bubbles dispersed in the cleaning liquid and emulsified particles of surfactant. The average particle size is the particle size (D50) at which the cumulative distribution value is 50%.

[0009] (2) The content of the nonionic surfactant in the cleaning solution is 1 × 10 -6 The cleaning aerosol composition according to (1), wherein the content of the aerosol is 5% by mass or less.

[0010] According to this configuration, when the cleaning aerosol composition is pressurized with a cleaning liquid using a compressed gas and sprayed to the outside, ultrafine bubbles of the compressed gas dissolved in the cleaning liquid are likely to be generated, making it easier to obtain a better cleaning effect and to wash away the cleaning liquid.

[0011] (3) The cleaning aerosol composition according to (1) or (2), wherein the nonionic surfactant comprises at least one of a polyglycerin-type nonionic surfactant, a polyoxyethylene sorbitan fatty acid ester, a polyoxyethylene hydrogenated castor oil, and a polyoxyethylene alkyl ether.

[0012] According to this configuration, when the cleaning aerosol composition is pressurized with a cleaning liquid using a compressed gas and sprayed to the outside, ultrafine bubbles of the compressed gas dissolved in the cleaning liquid are easily generated, making it easier to obtain a cleaning effect due to the ultrafine bubbles and to wash them away. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a cleaning aerosol composition that promotes the generation of ultrafine bubbles and provides excellent cleaning effects even when the concentration of the cleaning component is low. DETAILED DESCRIPTION OF THE INVENTION

[0014] <Cleaning aerosol composition> The cleaning aerosol composition (hereinafter also referred to as aerosol composition) of one embodiment of the present invention comprises a cleaning liquid and a compressed gas. The cleaning liquid contains a nonionic surfactant and water, and contains 3×10 dispersed particles having an average particle diameter of 30 to 150 nm. 6 Each of these is explained below.

[0015] (cleaning solution) The cleaning solution includes a non-ionic surfactant and water.

[0016] Nonionic surfactants Nonionic surfactants act as cleaning ingredients and exist as emulsified particles in the cleaning solution, making up the majority of the dispersed particles. When sprayed outside, they generate a large number of ultrafine bubbles of compressed gas, enhancing the cleaning effect.

[0017] The nonionic surfactant is not particularly limited. Examples of the nonionic surfactant include polyglycerin fatty acid esters such as polyglyceryl-10 laurate, polyglyceryl-10 myristate, polyglyceryl-10 stearate, polyglyceryl-10 oleate, polyglyceryl-6 caprylate, polyglyceryl-6 laurate, polyglyceryl-6 myristate, polyglyceryl-6 stearate, polyglyceryl-5 laurate, polyglyceryl-5 myristate, polyglyceryl-5 stearate, and polyglyceryl-5 oleate; Polyglycerin-type nonionic surfactants such as polyglycerin alkyl ethers such as diglyceryl-4 lauryl ether, polyoxyethylene sorbitan fatty acid esters such as POE sorbitan monolaurate (polysorbate 20), POE sorbitan monostearate (polysorbate 60), POE sorbitan tristearate (polysorbate 65), and POE sorbitan monooleate (polysorbate 80), polyoxyethylene hydrogenated castor oils such as POE (60) hydrogenated castor oil, and POE cetyl ether, polyoxyethylene alkyl ethers such as POE stearyl ether, POE oleyl ether, POE lauryl ether, POE behenyl ether, and POE octyldodecyl ether; polyoxyethylene polyoxypropylene alkyl ethers such as POE·POP cetyl ether and POE·POP decyltetradecyl ether; polyethylene glycol fatty acid esters such as polyethylene glycol monostearate; polyoxyethylene sorbit fatty acid esters such as POE sorbit monolaurate, POE sorbit tetrastearate, and POE sorbit tetraoleate; fatty acid alkanolamides such as coconut oil fatty acid diethanolamide, coconut oil fatty acid monoethanolamide, lauric acid diethanolamide, and lauric acid monoisopropanolamide; sorbitan fatty acid esters such as sorbitan monolaurate and sorbitan monostearate; monoglycerin fatty acid esters such as glyceryl monomyristate and glyceryl monostearate; and mixtures thereof.Among these, it is preferable to include at least one of polyglycerin-type nonionic surfactants, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene hydrogenated castor oil, and polyoxyethylene alkyl ethers, which makes it easier for the average particle size of dispersed particles (emulsified particles) in the cleaning liquid to be 30 to 150 nm.

[0018] The content of the nonionic surfactant is not particularly limited. For example, the content of the nonionic surfactant in the cleaning solution is 1×10 -6 It is preferably 1×10 mass% or more. -5 % by mass or more is more preferable. The content of the nonionic surfactant in the cleaning solution is preferably 5% by mass or less, more preferably 3% by mass or less, and even more preferably 1.5% by mass or less. By having the content of the nonionic surfactant within the above range, the cleaning solution can have dispersed particles (emulsified particles) of 3 × 10 6 When this cleaning solution is pressurized with compressed gas and sprayed to the outside, ultrafine bubbles of the compressed gas dissolved in the cleaning solution are easily generated, and the cleaning effect of the ultrafine bubbles is easily achieved. Furthermore, when the aerosol composition is used to wash away the cleaning solution sprayed on the object to be cleaned, less cleaning water is required.

[0019] ·water Water is the main solvent of the cleaning liquid, and compressed gas is dissolved in the container.When sprayed outside, the compressed gas generates ultra-fine bubbles that disperse throughout the object being sprayed, making it easier to remove dirt components from the object being cleaned.

[0020] The water is not particularly limited, and examples thereof include purified water, ion-exchanged water, deep sea water, and alkaline ionized water.

[0021] The water content is not particularly limited. For example, the water content in the cleaning solution is preferably 80% by mass or more, and more preferably 85% by mass or more. The water content in the cleaning solution is preferably 99.999% by mass or less, and more preferably 99.99% by mass or less. When the water content is within the above range, the cleaning solution can be easily removed from the object to be cleaned with a small amount of cleaning water after the cleaning process.

[0022] ·Optional ingredients In addition to the nonionic surfactant and water, the cleaning liquid may contain optional components such as surfactants other than the nonionic surfactant, alcohols, active ingredients, water-soluble polymers, oils, powders, etc.

[0023] Other surfactants are used for the purpose of enhancing the cleaning effect, etc.

[0024] The other surfactants are not particularly limited. Examples of the other surfactants include saponification products of fatty acids such as myristic acid and stearic acid with alkalis such as triethanolamine and potassium, alkyl phosphates such as potassium lauryl phosphate and sodium lauryl phosphate, anionic surfactants such as polyoxyethylene alkyl ether phosphates, alkyl sulfates, polyoxyethylene alkyl ether sulfates, alkyl ether carboxylates, and sulfonates; amino acid-based anionic surfactants such as N-acyl glutamates, N-acyl glycines, N-acylalanines, and acylalanines; silicone surfactants such as polyoxyethylene-methylpolysiloxane copolymers, polyoxypropylene-methylpolysiloxane copolymers, and poly(oxyethylene-oxypropylene)-methylpolysiloxane copolymers; and amphoteric surfactants such as lauryl dimethylaminoacetic acid betaine (lauryl betaine), stearyl betaine, and coconut oil fatty acid amidopropyl dimethylaminoacetic acid betaine (cocamidopropyl betaine).

[0025] When other surfactants are blended, the content of the other surfactants is not particularly limited. For example, the content of the other surfactants in the cleaning solution is preferably 0.001% by mass or more, more preferably 0.01% by mass or more. Furthermore, the content of the other surfactants in the cleaning solution is preferably 5% by mass or less, more preferably 3% by mass or less. When the content of the other surfactants is within the above range, the aerosol composition is likely to exhibit a cleaning assisting effect. Furthermore, the cleaning solution is easily removed from the object to be cleaned with a small amount of cleaning water after the cleaning process.

[0026] Alcohols are used to adjust the amount of compressed gas dissolved, thereby adjusting the size and number of ultrafine bubbles generated, and to enhance the cleaning effect.

[0027] The alcohols are not particularly limited, and examples thereof include monohydric alcohols such as ethanol and isopropanol, dihydric alcohols such as 1,3-butylene glycol and propylene glycol, and trihydric alcohols such as glycerin.

[0028] When alcohols are blended, the content of the alcohols is not particularly limited. For example, the content of the alcohols in the cleaning solution is preferably 0.1% by mass or more, more preferably 0.3% by mass or more. Furthermore, the content of the alcohols in the cleaning solution is preferably 15% by mass or less, more preferably 10% by mass or less. When the content of the alcohols is within the above range, the size and particle number of ultrafine bubbles in the aerosol composition can be easily adjusted.

[0029] Active ingredients are used to enhance the cleaning effect or to add other effects.

[0030] The active ingredient is not particularly limited. The active ingredient can be appropriately selected depending on the application and purpose. Examples of the active ingredient include bactericides and disinfectants such as parahydroxybenzoic acid esters, sodium benzoate, phenoxyethanol, benzalkonium chloride, benzethonium chloride, and chlorhexidine chloride; acids such as citric acid, malic acid, lactic acid, tartaric acid, malonic acid, and succinic acid; chelating agents such as trisodium nitrilotriacetate, tetrasodium ethylenediaminetetraacetate, sodium methylglycine diacetate, sodium ethylenediaminetetramethylenephosphonate, and sodium phosphonobutanetricarboxylate; vitamins such as retinol, retinol acetate, retinol palmitate, calcium pantothenate, magnesium ascorbyl phosphate, sodium ascorbate, dl-α-tocopherol, tocopherol acetate, tocopherol, tocopherol nicotinate, dibenzoylthiamine, riboflavin, and mixtures thereof; antioxidants such as ascorbic acid, α-tocopherol, dibutylhydroxytoluene, and butylhydroxyanisole; amino acids such as glycine, alanine, leucine, serine, tryptophan, cysteine, methionine, aspartic acid, glutamic acid, and arginine; moisturizers such as collagen, hyaluronic acid, caronic acid, sodium lactate, dl-pyrrolidone carboxylate, keratin, casein, lecithin, and urea; extracts such as royal jelly extract, peony extract, loofah extract, rose extract, lemon extract, aloe extract, calamus root extract, eucalyptus extract, sage extract, tea extract, seaweed extract, placenta extract, silk extract, Swertia japonica extract, and carrot extract; astringents such as zinc oxide, allantoin hydroxyaluminum, tannic acid, citric acid, and lactic acid; and various fragrances such as natural fragrances and synthetic fragrances.

[0031] When an active ingredient is blended, the content of the active ingredient is not particularly limited. For example, the content of the active ingredient in the cleaning solution is preferably 0.01% by mass or more, more preferably 0.03% by mass or more. Furthermore, the content of the active ingredient is preferably 5% by mass or less, more preferably 3% by mass or less. When the content of the active ingredient is within the above range, the aerosol composition is likely to exhibit the effects of the active ingredient.

[0032] The water-soluble polymer is used for purposes such as making it easier to retain ultrafine bubbles in the spray and increasing the cleaning effect by keeping the ultrafine bubbles in contact with the object to be cleaned for a longer period of time.

[0033] The water-soluble polymer is not particularly limited. Examples of the water-soluble polymer include cellulose polymers such as cellulose nanofiber, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, and sodium carboxymethyl cellulose, gums such as xanthan gum, carrageenan, gum arabic, gum tragacanth, cationized guar gum, guar gum, and gellan gum, dextran, sodium carboxymethyl dextran, dextrin, pectin, sodium alginate, sodium hyaluronate, and polyvinyl alcohol.

[0034] When a water-soluble polymer is blended, the content of the water-soluble polymer in the cleaning solution is preferably 0.01% by mass or more, more preferably 0.03% by mass or more. Furthermore, the content of the water-soluble polymer in the cleaning solution is preferably 3% by mass or less, more preferably 2% by mass or less. By having the content of the water-soluble polymer within the above range, the aerosol composition is likely to retain ultrafine bubbles in the spray.

[0035] The oil agent is used for the purpose of facilitating the removal of oily dirt components.

[0036] The oil is not particularly limited. Examples of the oil include silicone oils such as dimethicone, methylpolysiloxane, cyclopentasiloxane, cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, methylcyclopolysiloxane, tetrahydrotetramethylcyclotetrasiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, methylhydrogenpolysiloxane, and methylphenylpolysiloxane; decane; , dodecane, tetradecane, hexadecane, octadecane, liquid paraffin, isoparaffin, squalane, squalene and other hydrocarbon oils, methylpentanediol dineopentanoate, diethylpentanediol dineopentanoate, neopentyl glycol di-2-ethylhexanoate, neopentyl glycol dicaprate, propylene glycol dilaurate, ethylene glycol distearate, diethylene glycol dilaurate, diethylene glycol distearate, diisostearate These include ester oils such as diethylene glycol tearate, diethylene glycol dioleate, triethylene glycol dilaurate, triethylene glycol distearate, triethylene glycol diisostearate, triethylene glycol dioleate, propylene glycol monostearate, propylene glycol monooleate, ethylene glycol monostearate, glyceryl tri-2-ethylhexanoate, caprylic / capric triglyceride, isononyl isononanoate, isotridecyl isononanoate, diethoxyethyl succinate, diisostearyl malate, isopropyl myristate, isopropyl palmitate, cetyl isooctanoate, octyl hydroxystearate, and ethylhexyl hydroxystearate; oils and fats such as olive oil, camellia oil, corn oil, castor oil, safflower oil, jojoba oil, and coconut oil; fatty acids such as isostearic acid and oleic acid; and higher alcohols such as oleyl alcohol and isostearyl alcohol.

[0037] When an oil is blended, the content of the oil is not particularly limited. For example, the content of the oil in the cleaning solution is preferably 0.1% by mass or more, and more preferably 0.2% by mass or more. Furthermore, the content of the oil in the cleaning solution is preferably 5% by mass or less, and more preferably 3% by mass or less. When the content of the oil is within the above range, the effect of removing oily dirt components is easily obtained.

[0038] The powder is used for purposes such as facilitating the generation of ultrafine bubbles and facilitating the removal of dirt stuck to the object to be cleaned.

[0039] The powder is not particularly limited, and examples thereof include talc, silica, zeolite, zinc oxide, titanium oxide, kaolin, mica, magnesium carbonate, calcium carbonate, zinc silicate, magnesium silicate, aluminum silicate, and calcium silicate.

[0040] When a powder is blended, the content of the powder is not particularly limited. For example, the content of the powder in the cleaning solution is preferably 0.01% by mass or more, more preferably 0.05% by mass or more. Furthermore, the content of the powder in the cleaning solution is preferably 2% by mass or less, more preferably 1% by mass or less. When the content of the powder is within the above range, the aerosol composition is likely to have the effect of removing dirt stuck to the object to be cleaned.

[0041] Returning to the explanation of the cleaning solution as a whole, the method for preparing the cleaning solution is not particularly limited. For example, the cleaning solution can be prepared by adding a nonionic surfactant to water. Optional components may be added to water, or if they are insoluble in water, they may be dissolved in alcohol or oil and then added.

[0042] The cleaning solution contains emulsified particles of a nonionic surfactant and a small amount of air bubbles, and the average particle diameter (D50) of these dispersed particles is 30 to 150 nm. The average particle diameter (D50) of the dispersed particles is preferably 40 nm or more and 130 nm or less. The number of dispersed particles is 3×10 6 cells / mL or more, 5 x 10 6 Since the average particle size and number of dispersed particles are within the above-mentioned ranges, when the aerosol composition of the present embodiment is pressurized with a compressed gas and sprayed to the outside, ultrafine bubbles of the compressed gas dissolved in the cleaning solution are likely to be generated, making it easier to obtain a more excellent cleaning effect and to wash away the particles.

[0043] (compressed gas) The compressed gas is partially saturated and dissolved in the cleaning liquid inside the container, and when sprayed outside, it turns into ultra-fine bubbles that disperse in the sprayed material, thereby enhancing the cleaning effect, etc.

[0044] The compressed gas may be nitrogen, compressed air, oxygen, carbon dioxide, nitrous oxide, or a mixture thereof.

[0045] The content of compressed gas is not particularly limited. For example, the content of compressed gas is preferably an amount that causes the aerosol composition to have a pressure of 0.3 MPa or more at 25°C, and more preferably an amount that causes the aerosol composition to have a pressure of 0.4 MPa or more at 25°C. The content of compressed gas is preferably an amount that causes the aerosol composition to have a pressure of 1.0 MPa or less at 25°C, and more preferably an amount that causes the aerosol composition to have a pressure of 0.9 MPa or less at 25°C. When the content of compressed gas is within the above range, the aerosol composition is likely to generate ultrafine bubbles.

[0046] Returning to the description of the aerosol composition as a whole, the method for preparing the aerosol composition is not particularly limited. For example, the aerosol composition can be prepared by filling a pressure-resistant container with a cleaning liquid, attaching a valve to the pressure-resistant container and sealing it, and then filling the container with compressed gas through the valve, and dissolving the compressed gas in the cleaning liquid to saturate it.

[0047] As described above, when the aerosol composition of this embodiment is filled in an aerosol container, a portion of the compressed gas is dissolved in the cleaning solution. The dissolved compressed gas turns into ultrafine bubbles when sprayed to the outside. The recovered solution sprayed from the aerosol container into a cup and collected contains dispersed particles of the cleaning solution before filling into the aerosol container. Therefore, the number of ultrafine bubbles generated by spraying can be calculated by subtracting the number of dispersed particles measured in the cleaning solution from the number of dispersed particles measured in the recovered solution. The average particle diameter (D50) of the recovered solution includes the generated ultrafine bubbles and dispersed particles (emulsified particles) of the cleaning solution, and is preferably 30 to 150 nm. The aerosol composition of this embodiment can exhibit excellent cleaning effects even when the concentration of cleaning components is low, because the generation of ultrafine bubbles is promoted by spraying the cleaning solution from the aerosol container. [Example]

[0048] The present invention will be described in more detail below with reference to examples. The present invention is not limited to these examples. Unless otherwise specified, "%" means "% by mass" and "parts" means "parts by mass."

[0049] Example 1 Cleaning solution 1 was prepared according to the formulation (parts by mass) shown in Table 1 below and filled into an aluminum pressure-resistant container. An aerosol valve was attached to the opening of the pressure-resistant container and sealed, and nitrogen gas was filled through the stem to saturate and dissolve the cleaning solution. A spray button was attached to the stem, and a cleaning aerosol product filled with the cleaning aerosol composition was produced. The pressure inside the container at 25°C was 0.8 MPa.

[0050] <Example 2> A cleaning aerosol composition and a cleaning aerosol product were produced in the same manner as in Example 1, except that cleaning solution 2 shown in Table 1 was used instead of cleaning solution 1.

[0051] <Comparative Example 1> A cleaning aerosol composition and a cleaning aerosol product were produced in the same manner as in Example 1, except that purified water was used instead of cleaning solution 1.

[0052] [Table 1]

[0053] <Measuring average particle size and number> The contents of the cleaning aerosol product were sprayed and recovered after immersion in a 25°C thermostatic water bath for 30 minutes, and the average particle size (D50) and number of dispersed particles in the recovered liquid were measured using a nanotracking particle size analyzer (NanoSight NS300, manufactured by Malvern Panalytical Ltd.). The measurements were performed without diluting the recovered liquid with purified water. The particle size D50 and number of dispersed particles were also measured for each cleaning liquid and the purified water used in the cleaning liquid (referring to the cleaning liquid of Comparative Example 1). The results are shown in Table 2. Number of generated bubbles: The number of generated ultrafine bubbles is calculated by subtracting the number of bubbles in the cleaning liquid from the number of bubbles in the recovered liquid.

[0054] <Evaluation of cleaning ability> One milliliter of colored oil (*2) was applied to a white plastic plate (5 cm x 5 cm) using a syringe. Five grams of the cleaning aerosol product was then sprayed onto the oil on the plastic plate, and the color change of the plastic plate was measured using a colorimeter (Chroma Meter CR-200, manufactured by Minolta Co., Ltd.) to determine the Y value (Y1) of the XYZ color system. For comparison, 5 grams of cleaning solution was dropped onto the oil on the plastic plate using a syringe, and the color change of the plastic plate was measured using the colorimeter to determine the Y value (Y2). The Y value of the white plastic plate was 72.8, and the Y value (Y0) after the colored oil was applied to the plastic plate was 54.1. Cleaning performance was evaluated from the difference between Y1 and Y2 according to the following evaluation criteria. *2: Rice salad oil / cupass oil / oil yellow = 89 / 10 / 1 (mass ratio) (Evaluation criteria) ⊚: The difference between Y1 and Y2 was more than 5, and the color difference was easily visible to the naked eye. ◯: The difference between Y1 and Y2 was 4.5 or more and less than 5, and the color difference was visible to the naked eye. Δ: The difference between Y1 and Y2 was 4 or more and less than 4.5, and the difference in color was small when visually observed. ×: The difference between Y1 and Y2 was less than 4, and the difference in color was difficult to discern visually.

[0055] [Table 2]

[0056] As shown in Table 2, the cleaning aerosol compositions and cleaning aerosol products of Examples 1 and 2 of the present invention produced more fine bubbles due to the nitrogen gas dissolved therein than in Comparative Example 1, due to the dispersed particles in the cleaning liquid, and provided excellent cleaning effects even when the concentration of the cleaning ingredients was low.

[0057] <Examples 3 to 8> Cleaning solutions 3 to 8 were prepared according to the formulations (parts by mass) shown in Table 3 below and filled into aluminum pressure-resistant containers. An aerosol valve was attached to the opening of the pressure-resistant container and sealed, and nitrogen gas was filled through the stem to saturate and dissolve the cleaning solution. A spray button was attached to the stem, and cleaning aerosol compositions and cleaning aerosol products were produced. The pressure inside the container at 25°C was 0.8 MPa. The cleaning performance evaluation results are shown in Table 4.

[0058] [Table 3]

[0059] [Table 4]

[0060] As shown in Table 4, the cleaning aerosol compositions and cleaning aerosol products of Examples 3 to 8 of the present invention produced fine bubbles due to the dissolved nitrogen gas, and achieved excellent cleaning effects even when the concentration of cleaning ingredients was low. In Example 8, the cleaning liquid itself had high cleaning properties, so in the cleaning performance evaluation, the difference between the color of the plastic plate when the cleaning aerosol composition was sprayed (Y1) and the color of the plastic plate when the cleaning liquid was applied (Y2) was visually small. The cleaning aerosol compositions and cleaning aerosol products of Examples 1 to 7 contained less than half the amount of nonionic surfactant as the cleaning aerosol composition and cleaning aerosol product of Example 8, but due to the ultrafine bubbles, they achieved cleaning effects equal to or better than the cleaning liquid of Example 8 (Y2).

[0061] <Examples 9 to 11> Cleaning solutions 9 to 11 were prepared according to the formulations (parts by mass) shown in Table 5 below and filled into aluminum pressure containers. An aerosol valve was attached to the opening of the pressure container and sealed, and nitrogen gas was filled through the stem to saturate and dissolve the cleaning solution. A spray button was attached to the stem, and cleaning aerosol compositions and cleaning aerosol products were produced. The pressure inside the container at 25°C was 0.8 MPa. The particle diameter D50 and number of dispersed particles, as well as the evaluation results of cleaning performance, are shown in Table 6.

[0062] [Table 5]

[0063] [Table 6]

[0064] As shown in Table 6, the cleaning aerosol compositions and cleaning aerosol products of Examples 9 to 11 of the present invention produced more fine bubbles due to the nitrogen gas dissolved in the cleaning liquid than in Comparative Example 1, due to the dispersed particles in the cleaning liquid, and provided excellent cleaning effects even when the concentration of the cleaning ingredients was low.

[0065] <Examples 12 to 14> Cleaning solutions 12 to 14 were prepared according to the formulations (parts by mass) shown in Table 7 below and filled into aluminum pressure containers. An aerosol valve was attached to the opening of the pressure container and sealed, and nitrogen gas was introduced through the stem to saturate and dissolve the cleaning solution. A spray button was attached to the stem, and cleaning aerosol compositions and cleaning aerosol products were produced. The pressure inside the container at 25°C was 0.8 MPa. The particle diameter D50 and number of dispersed particles, as well as the evaluation results of cleaning performance, are shown in Table 8.

[0066] [Table 7]

[0067] [Table 8]

[0068] As shown in Table 8, the cleaning aerosol compositions and cleaning aerosol products of Examples 12 to 14 of the present invention produced more fine bubbles due to the nitrogen gas dissolved in the cleaning liquid than in Comparative Example 1, due to the dispersed particles in the cleaning liquid, and provided excellent cleaning effects even when the concentration of the cleaning ingredients was low.

Claims

1. a cleaning liquid and a compressed gas; The cleaning solution contains a nonionic surfactant and water, and contains 3×10 dispersed particles having an average particle size of 30 to 150 nm. 6 A cleaning aerosol composition containing at least 100 mg of benzoyl per mL of water.

2. The content of the nonionic surfactant in the cleaning solution is 1 × 10 -6 The cleaning aerosol composition according to claim 1, wherein the content is from 1 to 5% by mass.

3. 3. The cleaning aerosol composition according to claim 1, wherein the nonionic surfactant comprises at least one of a polyglycerin-type nonionic surfactant, a polyoxyethylene sorbitan fatty acid ester, a polyoxyethylene hydrogenated castor oil, and a polyoxyethylene alkyl ether.

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