Aerosol product

Abstract

To provide an aerosol product that, upon spraying on an object such as glass, walls, or floors, allows easy visual confirmation and enables drawing thin lines or points with foam.SOLUTION: An aerosol product comprises: an aerosol composition; an aerosol container filled with the aerosol composition and having a valve; and an ejection member mounted to the valve and having an ejection opening for ejecting the aerosol composition, wherein the aerosol composition comprises a stock solution containing soap and water, a liquefied gas, and carbon dioxide gas.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to aerosol products. More specifically, the present invention relates to aerosol products that can be easily visually confirmed by spraying onto objects such as glass, walls, and floors, and can draw thin lines, dots, etc. with foam.

Background Art

[0002] Conventionally, aerosol products that can draw lines, etc. with foam by spraying onto an object have been developed. Patent Documents 1 to 2 disclose aerosol products containing a surfactant and spraying onto a court or field of a sports competition to draw a line of foam.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the foam obtained by using the compositions described in Patent Documents 1 to 2 has room for improvement because the foam line is too thick or difficult to visually confirm in a short time.

[0005] The present invention has been made in view of such conventional problems, and an object of the present invention is to provide an aerosol product that can draw thin lines, dots, etc. with foam and is easily visually confirmed by spraying onto an object such as glass, wall, or floor.

Means for Solving the Problems

[0006] The present invention for solving the above problems mainly has the following configuration.

[0007] (1) An aerosol product comprising an aerosol composition, an aerosol container filled with the aerosol composition and having a valve, and an injection member attached to the valve and having injection holes through which the aerosol composition is injected. The aerosol composition consists of a stock solution containing soap and water, a liquefied gas, and carbon dioxide gas.

[0008] According to such a configuration, when the aerosol product is sprayed, a foamy aerosol composition adheres to the object. Thereafter, the foam has a tendency to shrink because the carbon dioxide gas volatilizes, making it difficult for the foam to break or liquefy. As a result, the foam easily adheres to the object, and there is almost no expansion in the width of the foam after adhesion, making it easy to draw thin lines or dots. Also, the drawn foam is easy to visually confirm.

[0009] (2) The carbon dioxide gas is dissolved in the liquid phase of the stock solution and the liquefied gas, and the concentration of the carbon dioxide gas dissolved in the liquid phase at 25°C is 500 to 15,000 ppm. The aerosol product according to (1).

[0010] According to such a configuration, the aerosol product can easily obtain the effect of the volatilization of carbon dioxide gas from the foam.

[0011] (3) The cross-sectional area of the injection hole is 0.03 to 2.0 mm 2 The aerosol product according to (1) or (2).

[0012] According to such a configuration, the aerosol product can easily draw fine numbers, symbols, characters, pictures, etc. with the foam.

[0013] (4) The content of the liquefied gas is 5 to 40% by mass in the aerosol composition. The aerosol product according to any one of (1) to (3).

[0014] According to such a configuration, even if carbon dioxide gas is dissolved in the aerosol composition in the aerosol container, the soap is less likely to precipitate and is stable. Further, the sprayed aerosol composition foams moderately on the object and then withers and adheres easily. The foam deposit is less likely to expand in width after adhesion and is more likely to draw thin lines, dots, etc.

Advantages of the Invention

[0015] According to the present invention, it is possible to provide an aerosol product that can draw thin lines, dots, etc. with foam by spraying on an object such as glass, a wall, or a floor, and is easy to visually confirm.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Modes for Carrying Out the Invention

[0017] <Aerosol Product> The aerosol product of one embodiment of the present invention includes an aerosol composition, an aerosol container filled with the aerosol composition and having a valve, and an injection member attached to the valve and having an injection hole through which the aerosol composition is injected. The aerosol composition consists of a stock solution containing soap and water, a liquefied gas, and carbon dioxide gas. Each will be described below.

[0018] (Aerosol Composition) The aerosol composition is filled in an aerosol container described later. The aerosol composition consists of a stock solution containing soap and water, a liquefied gas, and carbon dioxide gas.

[0019] ·Stock Solution The stock solution contains soap and water.

[0020] The soap is not particularly limited. For example, the soap is a fatty acid soap, an amino acid soap, or the like.

[0021] The fatty acid soap is not particularly limited. For example, the fatty acid soap is more preferably a saponification product of a fatty acid containing lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, etc. and an organic amine such as triethanolamine or diisopropanolamine or an inorganic alkali such as sodium hydroxide or potassium hydroxide.

[0022] The amino acid soap is not particularly limited. For example, the amino acid soap is an N-acylglutamate such as N-coconut oil fatty acid acyl-L-glutamic acid triethanolamine, N-coconut oil fatty acid acyl-L-glutamic acid potassium, N-coconut oil fatty acid acyl-L-glutamic acid sodium, N-lauroyl-L-glutamic acid triethanolamine, N-lauroyl-L-glutamic acid potassium, N-lauroyl-L-glutamic acid sodium, N-myristoyl-L-glutamic acid potassium, N-myristoyl-L-glutamic acid sodium, N-stearoyl-L-glutamic acid sodium, an N-acylglycine salt such as N-coconut oil fatty acid acylglycine potassium, N-coconut oil fatty acid acylglycine sodium, or an N-acylalanine salt such as N-coconut oil fatty acid acyl-DL-alanine triethanolamine.

[0023] In this embodiment, carbon dioxide gas is dissolved in the aerosol composition inside the aerosol container. As a result, the liquid phase of the aerosol composition has a pH that has changed to the acidic side, and the saponification degree of the saponified product has decreased. Generally, this makes it easier for fatty acids and amino acids to precipitate. However, since the aerosol product of this embodiment contains a specific amount of liquefied gas, these precipitations can be prevented, and the aerosol composition can be easily maintained stably. In addition, the aerosol composition is more likely to be ejected from a specific ejection hole. When such an aerosol composition is ejected to the outside, carbon dioxide gas volatilizes from the ejecta. As a result, the bubbles of the ejecta tend to wither and adhere to the object, and there is almost no expansion of the width of the bubbles after adhesion, making it easy to draw thin lines, dots, etc. Furthermore, the drawn bubbles are easy to visually confirm. As described above, in this embodiment, by using carbon dioxide gas instead of other compressed gases such as nitrogen gas, the pH of the aerosol composition is changed before and after ejection. As a result, the saponification degree of the soap is changed, and the properties of the ejected bubbles are adjusted, which is a feature.

[0024] The content of the soap is not particularly limited. For example, the content of the soap is preferably 0.5% by mass or more, more preferably 1% by mass or more in the stock solution. Also, the content of the soap is preferably 20% by mass or less, more preferably 15% by mass or less in the stock solution. When the content of the soap is within the above range, the ejected bubbles are likely to wither on the object, are less likely to liquefy, and are less likely to drip. As a result, after the bubbles adhere, there is almost no expansion of the bubbles, and the shape such as letters is likely to be maintained. In addition, the aerosol composition has an appropriate viscosity and is easy to be ejected as fine bubbles from the ejection hole described later.

[0025] Water is a solvent for the stock solution and is blended to form a liquid film of the bubbles. Water is purified water, ion-exchanged water, deep ocean water, etc.

[0026] The water content is not particularly limited. For example, the water content is preferably 50% by mass or more, more preferably 60% by mass or more in the stock solution. Also, the water content is preferably 99% by mass or less, more preferably 97% by mass or less in the stock solution. When the water content is within the above range, the aerosol composition is easy to spray onto the object. Also, the sprayed foam is easy to wipe off on the object, and the residue is likely to be less.

[0027] In addition to soap and water, the stock solution may contain surfactants other than soap, alcohols, oil components, water-soluble polymers, active ingredients, etc.

[0028] Surfactants are used for purposes such as adjusting foaming properties and foam collapse, enhancing the cleaning effect, and preventing fogging.

[0029] The surfactant is not particularly limited. For example, the surfactant may be a polyoxyethylene sorbitan fatty acid ester such as polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate; a polyoxyethylene alkyl ether such as POE cetyl ether, POE stearyl ether, POE oleyl ether, POE lauryl ether, POE behenyl ether, POE octyldodecyl ether, POE isocetyl ether, POE isostearyl ether; a polyoxyethylene polyoxypropylene alkyl ether such as POE·POP cetyl ether, POE·POP decyltetradecyl ether; a polyoxyethylene glycerin fatty acid ester such as polyoxyethylene glyceryl monostearate; a polyoxyethylene hydrogenated castor oil such as POE hydrogenated castor oil; a polyethylene glycol fatty acid ester such as polyethylene glycol monostearate; a polyglycerin fatty acid ester such as hexaglyceryl monolaurate, hexaglyceryl monomyristate, pentaglyceryl monolaurate, pentaglyceryl monomyristate, pentaglyceryl monooleate, pentaglyceryl monostearate, decaglyceryl monolaurate, decaglyceryl monomyristate, decaglyceryl monostearate, decaglyceryl monoisostearate, decaglyceryl monooleate, decaglyceryl monolinoleate; a polyoxyethylene glycerin fatty acid ester such as polyoxyethylene glyceryl monooleate; a polyoxyethylene sorbitol fatty acid ester such as polyoxyethylene sorbitol monolaurate, polyoxyethylene sorbitol tetrastearate, polyoxyethylene sorbitol tetraoleate; a sorbitan fatty acid ester such as sorbitan monolaurate, sorbitan monostearate; a monoglycerin fatty acid ester such as glyceryl monomyristate, glyceryl monostearate, etc., which are nonionic surfactants; silicone surfactants such as polyoxyethylene-methylpolysiloxane copolymer, polyoxypropylene-methylpolysiloxane copolymer, poly(oxyethylene-oxypropylene)-methylpolysiloxane copolymer; amphoteric surfactants such as lauryl betaine, stearyl betaine, cocamidopropyl betaine, etc.

[0030] When a surfactant is included, the content of the surfactant is preferably 0.1% by mass or more, more preferably 0.5% by mass or more in the stock solution. Also, the content of the surfactant is preferably 10% by mass or less, more preferably 8% by mass or less in the stock solution. When the content of the surfactant is within the above range, the aerosol product can easily obtain the effects by blending the surfactant.

[0031] Alcohols are used as auxiliary solvents for dissolving active ingredients and surfactants that are difficult to dissolve in water, and for adjusting foaming properties and foam collapse.

[0032] Alcohols are not particularly limited. For example, alcohols include monohydric alcohols having 2 to 3 carbon atoms such as ethanol and isopropanol, and polyhydric alcohols having 2 to 3 hydroxyl groups such as ethylene glycol, propylene glycol, 1,3-butylene glycol, diethylene glycol, dipropylene glycol, and glycerin.

[0033] When alcohols are included, the content of alcohols is preferably 0.1% by mass or more, more preferably 0.3% by mass or more in the stock solution. Also, the content of alcohols is preferably 20% by mass or less, more preferably 15% by mass or less in the stock solution. When the content of alcohols is within the above range, the aerosol product can easily obtain the effects by blending alcohols. Also, the ejected foam is less likely to be liquefied and less likely to drip.

[0034] The oil component is used for purposes such as suppressing the precipitation of soap when filled with carbon dioxide gas, adjusting foaming properties and foam collapse, and imparting water repellency to the object.

[0035] The oil content is not particularly limited. For example, the oil content may be silicone oils such as dimethicone, methylpolysiloxane, cyclopentasiloxane, cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, methylcyclopolysiloxane, tetrahydrotetramethylcyclotetrasiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane; hydrocarbon oils such as decane, dodecane, tetradecane, hexadecane, octadecane, liquid paraffin, isoparaffin, squalane, squalene; ester oils such as methylpentanediol dineopentanoate, diethylpentanediol dineopentanoate, neopentyl glycol di-2-ethylhexanoate, neopentyl glycol dicaprate, propylene glycol dilaurate, ethylene glycol distearate, diethylene glycol dilaurate, diethylene glycol distearate, diethylene glycol diisostearate, 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, tri(caprylic / capric acid) glycerin, isononyl isononanoate, isotridecyl isononanoate, diethoxyethyl succinate, diisostearyl malate, isopropyl myristate, isopropyl palmitate, cetyl isooctanoate, octyl hydroxystearate, ethylhexyl hydroxystearate; fats and oils such as olive oil, camellia oil, corn oil, castor oil, safflower oil, jojoba oil, coconut oil; linear higher alcohols such as lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, branched higher alcohols such as lanolin alcohol, hexyl dodecanol, cetostearyl alcohol, octyl dodecanol, etc.

[0036] When an oil component is included, the content of the oil component is preferably 0.1% by mass or more, more preferably 0.3% by mass or more in the stock solution. Also, the content of the oil component is preferably 10% by mass or less, more preferably 8% by mass or less in the stock solution. When the content of the oil component is within the above range, the aerosol product can easily obtain the effects of blending the oil component.

[0037] The water-soluble polymer is used for purposes such as strengthening the liquid film of the foam to make it difficult to break or liquefy, and making the foam easy to collapse.

[0038] The water-soluble polymer is not particularly limited. For example, the water-soluble polymer is a cellulose-based polymer such as cellulose nanofiber, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, sodium carboxymethyl cellulose, a gum such as xanthan gum, carrageenan, gum arabic, tragacanth gum, cationized guar gum, guar gum, gellan gum, gelatin, dextran, sodium carboxymethyl dextran, dextrin, pectin, sodium alginate, sodium hyaluronate, polyvinyl alcohol, carboxyvinyl polymer, etc.

[0039] When a water-soluble polymer is included, the content of the water-soluble polymer is preferably 0.01% by mass or more, more preferably 0.05% by mass or more in the stock solution. Also, the content of the water-soluble polymer is preferably 5% by mass or less, more preferably 3% by mass or less in the stock solution. When the content of the water-soluble polymer is within the above range, the aerosol product can easily obtain the effects of blending the water-soluble polymer. Also, the aerosol composition has an appropriate viscosity, is easily emulsified with the liquefied gas, is easily sprayed with a uniform composition, and easily exhibits stable foaming properties.

[0040] The active ingredient is appropriately selected according to the use, purpose, etc. The active ingredient is not particularly limited. For example, the active ingredient can be alkylamine oxide, alpha olefin sulfonic acid, etc. for detergents for bathrooms, kitchens, toilets, glass, etc., methyl benzoate, benzyl acetate, lauryl methacrylate, methyl benzoate, methyl phenylacetate, geranyl crotonate, acetophenone myristate, benzyl acetate, benzyl propionate, green tea extract, etc. for deodorizing components, isopropylmethylphenol, thymol, carvacrol, phenoxyethanol, paraoxybenzoic acid ester, sodium benzoate, potassium sorbate, benzalkonium chloride, benzethonium chloride, chlorhexidine chloride, photosensitizer, parachlorometacresol, hinokitiol, etc. for bactericidal components, floral, green, citrus green, green floral, citrus, rose, rosewood, herbal wood, lemon, peppermint, etc. for fragrances, citric acid, lactic acid, etc. for pH adjusters, disodium edetate, etc. for chelating agents, N,N-diethyl-m-toluamide (DEET), di-n-butyl succinate, hydroxyanisole, rotenone, ethyl-butylacetylaminopropionate, icaridin (picaridin), p-menthane-3,8-diol, ethyl 3-[acetyl(butyl)amino]propionate, 1-methylpropyl 2-(2-hydroxyethyl)piperidine-1-carboxylate, herbal extract, etc. for pest repellents, phthalothrin, phenothrin, allethrin, permethrin, cis-methrin, proparthrin, resmethrin, d-phenothrin, tefluthrin, benfluthrin, transfluthrin, etc. for insecticidal components, cinerin, piperonyl butoxide, octachlorodipropyl ether, etc. for potency enhancers, etc.

[0041] When an active ingredient is included, the content of the active ingredient is preferably 0.01% by mass or more and more preferably 0.05% by mass or less in the stock solution. Further, the content of the active ingredient is preferably 20% by mass or less and more preferably 15% by mass or less in the stock solution. When the content of the active ingredient is within the above range, the aerosol product can easily obtain the effect of the active ingredient. Further, the active ingredient is less likely to affect the collapse of the sprayed foam.

[0042] Returning to the description of the entire stock solution, the method for preparing the stock solution is not particularly limited. The stock solution can be prepared by a conventionally known method. For example, the stock solution can be prepared by adding a fatty acid or the like to water, heating it, and adding an alkaline agent to saponify the fatty acid.

[0043] The content of the stock solution is preferably 60% by mass or more and more preferably 65% by mass or more in the aerosol composition. Further, the content of the stock solution is preferably 95% by mass or less and more preferably 92% by mass or less in the aerosol composition. When the content of the stock solution is within the above range, the sprayed foam foams moderately on the object and then easily collapses, and the foam after adhesion is difficult to expand in width and is easy to draw thin lines and dots.

[0044] · Liquefied gas The liquefied gas is a liquid having a vapor pressure in the aerosol container and constitutes a liquid phase together with the stock solution. A part of the carbon dioxide gas is dissolved in the liquid phase, but the liquefied gas prevents the precipitation of soap and stabilizes the aerosol composition. The liquefied gas is emulsified with the stock solution by shaking the aerosol container before spraying to form an emulsion. When the liquefied gas contained in the emulsion is sprayed outside, it vaporizes to foam the stock solution. Further, the liquefied gas promotes the volatilization of the dissolved carbon dioxide gas, causes the foam to collapse, and makes it easy to adhere to the object.

[0045] The liquefied gas is not particularly limited. For example, the liquefied gas is liquefied petroleum gas such as propane, normal butane, isobutane and mixtures thereof, dimethyl ether, hydrofluoroolefins such as trans-1,3,3,3-tetrafluoropropene (HFO-1234ze), and mixtures thereof.

[0046] The content of the liquefied gas is preferably 5% by mass or more, more preferably 8% by mass or more in the aerosol composition. Also, the content of the liquefied gas is preferably 40% by mass or less, more preferably 35% by mass or less in the aerosol composition. When the content of the liquefied gas is within the above range, the aerosol composition is stable and fatty acids and the like are less likely to precipitate. Further, when the aerosol composition is sprayed, it foams moderately on the object and then easily withers, and the foam after adhesion is less likely to spread in width and is easy to draw thin lines, dots, etc.

[0047] · Carbon dioxide Carbon dioxide is partially dissolved in the liquid phase of the stock solution and the liquefied gas in the aerosol container, changing the pH of the liquid phase to the acidic side. As a result, the saponification degree of the soap in the stock solution varies. As a result, the aerosol composition becomes easier to spray. Also, when the aerosol composition is sprayed to the outside, the dissolved carbon dioxide volatilizes, increasing the saponification degree of the soap. As a result, the sprayed foam is suppressed from defoaming and liquefying, and easily withers and adheres to the object. Further, the foam is not likely to become thick after adhesion, so it is easy to draw thin lines, dots, etc. with the foam, and furthermore, letters, symbols, pictures, etc. can also be drawn with the foam. The drawn foam is easy to visually confirm and persists.

[0048] The concentration of carbon dioxide gas dissolved in the liquid phase at 25°C is preferably 500 ppm or more, more preferably 1,000 ppm or more. Also, the concentration of carbon dioxide gas dissolved in the liquid phase at 25°C is preferably 15,000 ppm or less, more preferably 10,000 ppm or less. When the concentration of carbon dioxide gas is within the above range, in the aerosol composition that has been sprayed, the dissolved carbon dioxide gas volatilizes and the above effects are easily obtained. Also, even when the aerosol product is at a high temperature, the pressure does not become too high, the sprayed aerosol composition is less likely to scatter, and it is easy to draw fine lines, dots, etc. with bubbles. Note that in the present embodiment, the concentration of carbon dioxide gas dissolved in the liquid phase can be calculated from the equilibrium pressure (P0) at 25°C when the stock solution and the liquefied gas are filled, the filling amount when carbon dioxide gas is filled therein, the equilibrium pressure (P1) at 25°C at this time, and the volumes of the liquid phase and the gas phase in the aerosol container.

[0049] Returning to the description of the entire aerosol composition, the method for preparing the aerosol composition is not particularly limited. For example, the aerosol composition can be prepared by the following operations: (a) filling the stock solution into an aerosol container, which is a pressure-resistant container, and fixing and sealing a valve (aerosol valve); (b) filling the liquefied gas from the stem of the aerosol valve, and further filling carbon dioxide gas from the stem; (c) shaking the aerosol container to saturate and dissolve the carbon dioxide gas in the liquid phase.

[0050] (Aerosol container) The aerosol container is filled with the above-described aerosol composition. The aerosol container includes a container body filled with the aerosol composition and an aerosol valve attached to the opening of the container body. An injection member having an injection hole for injecting the aerosol composition is attached to the stem of the aerosol valve.

[0051] The container body is not particularly limited. For example, the container body includes a cylindrical body portion whose lower end is closed by a bottom portion, a shoulder portion provided so as to have a reduced diameter upward from the upper end of the body portion, and a bead (opening portion) formed in a ring shape at the upper end of the shoulder portion.

[0052] The material of the container body is not particularly limited. For example, the material of the container body is metal such as aluminum and tinplate, synthetic resin such as polyester like polyethylene terephthalate, pressure-resistant glass, etc.

[0053] The aerosol valve has a mounting cup attached to the bead (opening), a housing held at the center of the mounting cup, a stem vertically movably accommodated inside the housing, a ring-shaped stem rubber fixed between the mounting cup and the housing with the stem inserted in the center, and a spring that constantly biases the stem upward. A dip tube is attached to the lower part of the housing. When the stem hole is opened by an injection operation, the liquid phase of the aerosol composition is sucked up from the lower end opening of the dip tube.

[0054] (Injection member) The injection member is a member for the consumer to perform an injection operation, and includes a main body having a mounting portion for mounting on the stem of the aerosol valve, and a nozzle mounted on the main body and having an injection hole formed therein for injecting the aerosol composition to the outside.

[0055] The nozzle may be provided with an injection passage for guiding the aerosol composition from the main body side to the injection hole provided at the tip and adjusting the momentum. Further, the injection member may be a trigger type that pushes down the main body by pulling a lever so as to facilitate the injection operation.

[0056] The cross-sectional area of the injection hole is not particularly limited. For example, the cross-sectional area of the injection hole is preferably 0.03 mm 2 or more, more preferably 0.05 mm 2 or more. Also, the cross-sectional area of the injection hole is preferably 2.0 mm 2 or less, preferably 1.5 mm 2The following is more preferable. When the cross-sectional area of the injection hole is within the above range, the aerosol composition to be injected is suppressed from spreading from the injection hole, and it is easy to draw thin lines or dots with bubbles on the object. Further, the bubbles attached to the object are less likely to drip on the object.

[0057] When providing an injection passage, its length is not particularly limited. For example, the length of the injection passage is preferably 1 mm or more, more preferably 2 mm or more. Also, the length of the injection passage is preferably 200 mm or less, more preferably 150 mm or less. When the length of the injection passage is within the above range, the injected aerosol composition has its momentum adjusted, resulting in less bouncing on the object, and the bubbles are easily adjusted to an appropriate fineness. Also, it is easy to inject the aerosol composition at the targeted location with the aerosol product.

[0058] Also, the cross-sectional area of the injection passage is not particularly limited. For example, the cross-sectional area of the injection passage is preferably 0.1 mm 2 or more, more preferably 0.3 mm 2 or more. Also, the cross-sectional area of the injection passage is preferably 2.0 mm 2 or less, more preferably 1.5 mm 2 or less. When the cross-sectional area of the injection passage is within the above range, the injected aerosol composition has its momentum adjusted and the spread from the injection hole is suppressed, making it easy to draw thin lines or dots with bubbles on the object. Further, the bubbles attached to the object are less likely to drip on the object. Note that the cross-sectional area of the injection passage may be the same as that of the injection hole.

[0059] The shape of the passage from the injection passage to the injection hole may be a straight shape with direct communication, or may be a shape having a mechanical breakup mechanism with a swirling chamber provided between the injection passage and the injection hole. The shape of the passage in this embodiment is preferably a straight shape in terms of being easy to draw thin lines.

Examples

[0060] Hereinafter, the present invention will be described more specifically with reference to examples. The present invention is not limited to these examples in any way. Unless otherwise specified, “%” means “mass %” and “parts” means “parts by mass”.

[0061] (Example 1) According to the formulation shown in Table 1 below, stock solution 1 was prepared. 52 g (80% by mass) of stock solution 1 was filled into an aluminum pressure-resistant container, and an aerosol valve was fixed. The filling volume of the aerosol container was 128.5 mL. 13 g (20% by mass) of liquefied petroleum gas (pressure 0.34 MPa (25 °C)) was filled from the stem of the aerosol valve, and stock solution 1 and liquefied petroleum gas were mixed inside the aerosol container. The equilibrium pressure (P0) at 25 °C at this time was 0.35 MPa. Further, 0.81 g of carbon dioxide gas was filled from the stem. The equilibrium pressure (P1) at 25 °C was 0.6 MPa, and the concentration of carbon dioxide gas dissolved in the liquid phase was 8,750 ppm. An injection member 1 (injection hole φ0.3, inner diameter of injection passage φ1.2, length 9.6 mm, straight) was attached to the stem to produce an aerosol product.

[0062] [Table 1]

[0063] (Example 2) An aerosol product was produced in the same manner as in Example 1, except that 0.47 g of carbon dioxide gas was filled from the stem, the equilibrium pressure (P1) at 25 °C was set to 0.5 MPa, and the concentration of carbon dioxide gas dissolved in the liquid phase was set to 5,020 ppm.

[0064] (Example 3) An aerosol product was produced in the same manner as in Example 1, except that 0.13 g of carbon dioxide gas was filled from the stem, the equilibrium pressure (P1) at 25 °C was set to 0.4 MPa, and the concentration of carbon dioxide gas dissolved in the liquid phase was set to 1,270 ppm.

[0065] (Comparative Example 1) An aerosol product was manufactured in the same manner as in Example 1, except that nitrogen gas was filled instead of carbon dioxide gas and the equilibrium pressure (P1) at 25°C was set to 0.6 MPa.

[0066] (Comparative Example 2) An aerosol product was manufactured in the same manner as in Example 1, except that no carbon dioxide gas was filled.

[0067] (Example 4) 52 g (80% by mass) of the stock solution 1 was filled into an aluminum pressure-resistant container, and an aerosol valve was fixed. The filling volume of the aerosol container was 128.5 mL. 13 g (20% by mass) of liquefied petroleum gas (pressure 0.20 MPa (25°C)) was filled from the stem of the aerosol valve, and the stock solution 1 and the liquefied petroleum gas were mixed inside the aerosol container. The equilibrium pressure (P0) at 25°C at this time was 0.22 MPa. Further, 0.82 g of carbon dioxide gas was filled from the stem, and the equilibrium pressure (P1) at 25°C was 0.5 MPa. The concentration of carbon dioxide gas dissolved in the liquid phase was 8,430 ppm. An injection member 1 was attached to the stem to manufacture an aerosol product.

[0068] (Example 5) An aerosol product was manufactured in the same manner as in Example 4, except that 0.5 g of carbon dioxide gas was filled from the stem, the equilibrium pressure (P1) at 25°C was set to 0.4 MPa, and the concentration of carbon dioxide gas dissolved in the liquid phase was set to 5,020 ppm.

[0069] (Example 6) An aerosol product was manufactured in the same manner as in Example 4, except that 0.21 g of carbon dioxide gas was filled from the stem, the equilibrium pressure (P1) at 25°C was set to 0.3 MPa, and the concentration of carbon dioxide gas dissolved in the liquid phase was set to 2,050 ppm.

[0070] (Comparative Example 3) An aerosol product was manufactured in the same manner as in Example 4, except that no carbon dioxide gas was filled.

[0071] (Comparative Example 4) According to the formulation shown in Table 1, stock solution 2 was prepared. 52 g (80% by mass) of stock solution 2 was filled into an aluminum pressure-resistant container, and an aerosol valve was fixed. The filling volume of the aerosol container was 128.5 mL. 13 g (20% by mass) of liquefied petroleum gas (pressure 0.20 MPa (25 °C)) was filled from the stem of the aerosol valve, and stock solution 2 and liquefied petroleum gas were mixed inside the aerosol container. The equilibrium pressure (P0) at 25 °C at this time was 0.22 MPa. Further, 0.81 g of carbon dioxide gas was filled from the stem, the equilibrium pressure (P1) at 25 °C was 0.5 MPa, and the concentration of carbon dioxide gas dissolved in the liquid phase was 8,270 ppm. An injection member 1 was attached to the stem to produce an aerosol product.

[0072] (Example 7) 42 g (70% by mass) of stock solution 1 was filled into an aluminum pressure-resistant container, and an aerosol valve was fixed. The filling volume of the aerosol container was 128.5 mL. 18 g (30% by mass) of liquefied petroleum gas (pressure 0.20 MPa (25 °C)) was filled from the stem of the aerosol valve, and stock solution 1 and liquefied petroleum gas were mixed inside the aerosol container. The equilibrium pressure (P0) at 25 °C at this time was 0.22 MPa. Further, 0.78 g of carbon dioxide gas was filled from the stem, the equilibrium pressure (P1) at 25 °C was 0.5 MPa, and the concentration of carbon dioxide gas dissolved in the liquid phase was 8,360 ppm. An injection member 1 was attached to the stem to produce an aerosol product.

[0073] (Example 8) 63 g (90% by mass) of stock solution 1 was filled into an aluminum pressure-resistant container, and an aerosol valve was fixed. The filling volume of the aerosol container was 128.5 mL. 7 g (10% by mass) of liquefied petroleum gas (pressure 0.20 MPa (25 °C)) was filled from the stem of the aerosol valve, and stock solution 1 and liquefied petroleum gas were mixed inside the aerosol container. The equilibrium pressure (P0) at 25 °C at this time was 0.21 MPa. Further, 0.8 g of carbon dioxide gas was filled from the stem, the equilibrium pressure (P1) at 25 °C was 0.5 MPa, and the concentration of carbon dioxide gas dissolved in the liquid phase was 7,580 ppm. An injection member 1 was attached to the stem to produce an aerosol product.

[0074] (Example 9) An aerosol product was manufactured in the same manner as in Example 4, except that an injection member 2 with an injection hole of φ0.6, an inner diameter of the injection passage of φ0.9, a length of 9.6 mm, and straight was attached.

[0075] (Example 10) An aerosol product was manufactured in the same manner as in Example 4, except that an injection member 3 with an injection hole of φ1.2, an inner diameter of the injection passage of φ1.2, a length of 10.3 mm, and straight was attached.

[0076] (Example 11) An aerosol product was manufactured in the same manner as in Example 4, except that an injection member 4 with an injection hole of φ0.35, an inner diameter of the injection passage of φ1.0, a length of 3.9 mm, and straight was attached.

[0077] (Example 12) An aerosol product was manufactured in the same manner as in Example 4, except that an injection member 5 with an injection hole of φ0.9, an inner diameter of the injection passage of φ1.2, a length of 3.9 mm, and straight was attached.

[0078] (Example 13) An aerosol product was manufactured in the same manner as in Example 4, except that an injection member 6 with an injection hole of φ1.2, an inner diameter of the injection passage of φ1.2, a length of 6.3 mm, and straight was attached.

[0079] (Example 14) An aerosol product was manufactured in the same manner as in Example 4, except that an injection member 7 with a tube having an inner diameter of φ0.6 and a length of 100 mm (injection hole: φ0.6, injection passage length: 100 mm) attached to the main body was attached.

[0080] (Example 15) An aerosol product was manufactured in the same manner as in Example 4, except that an injection member 8 with a tube having an inner diameter of φ0.6 and a length of 25 mm (injection hole: φ0.6, injection passage length: 25 mm) attached to the main body was attached.

[0081] (Example 16) (Example 16) According to the formulation shown in Table 2 below, stock solution 3 was prepared. 52 g (80% by mass) of stock solution 3 was filled into an aluminum pressure-resistant container, and an aerosol valve was fixed. The filling volume of the aerosol container was 128.5 mL. 13 g (20% by mass) of liquefied petroleum gas (pressure 0.20 MPa (25 °C)) was filled from the stem of the aerosol valve, and stock solution 3 and liquefied petroleum gas were mixed inside the aerosol container. The equilibrium pressure (P0) at 25 °C at this time was 0.22 MPa. Further, 0.80 g of carbon dioxide gas was filled from the stem. The equilibrium pressure (P1) at 25 °C was 0.5 MPa, and the concentration of carbon dioxide gas dissolved in the liquid phase was 8,120 ppm. An injection member 1 was attached to the stem to produce an aerosol product.

[0082] [Table 2]

[0083] (Example 17) (Example 17) 52 g (80% by mass) of stock solution 4 was filled into an aluminum pressure-resistant container, and an aerosol valve was fixed. The filling volume of the aerosol container was 128.5 mL. 13 g (20% by mass) of liquefied petroleum gas (pressure 0.20 MPa (25 °C)) was filled from the stem of the aerosol valve, and stock solution 4 and liquefied petroleum gas were mixed inside the aerosol container. The equilibrium pressure (P0) at 25 °C at this time was 0.21 MPa. Further, 0.76 g of carbon dioxide gas was filled from the stem. The equilibrium pressure (P1) at 25 °C was 0.5 MPa, and the concentration of carbon dioxide gas dissolved in the liquid phase was 7,370 ppm. An injection member 1 was attached to the stem to produce an aerosol product.

[0084] The aerosol products prepared in Examples 1 to 17 and Comparative Examples 1 to 4 were immersed in a constant temperature water bath at 25 °C for 30 minutes to adjust the temperature of the aerosol composition to 25 °C. An injection member was attached to the stem, and it was injected so as to draw characters on a glass plate installed at a position 15 cm away from the injection hole. According to the following evaluation method, the ease of drawing characters, the state of the deposits, and the persistence of the deposits (persistence of the characters) were evaluated. The results are shown in Table 3.

[0085] <Ease of writing characters> (Evaluation criteria) ○: After the aerosol product adhered to the glass plate, the width of the foam did not expand, and fine characters could be drawn. △1: After the aerosol product adhered to the glass plate, the width of the foam slightly expanded, but fine characters could be drawn. △2: After the aerosol product drew fine characters, part of the foam liquefied. ×: After the aerosol product adhered to the glass plate, the width of the foam expanded, so only thick lines could be drawn.

[0086] <State of the deposit> (Evaluation criteria) ○: The foam adhered to the glass plate shrank, and the deposit had little unevenness and was easy to visually confirm. △: The foam adhered to the glass plate had weak shrinkage, partially burst, and unevenness formed in the deposit, but it could be visually confirmed. ×: The foam adhered to the glass plate merged and became difficult to confirm.

[0087] <Durability of characters> (Evaluation criteria) ○: Characters could still be confirmed even 1 hour after spraying. ×: More than half of the characters liquefied and became unreadable 3 minutes after spraying.

[0088]

Table 3

[0089] As shown in Table 3, the aerosol products of Examples 1 to 17 of the present invention could draw fine characters and the deposits could be visually observed. FIG. 1 is a photographic image of the appearance of the foam formed using the aerosol product of Example 4. As shown in FIG. 1, the foam sprayed on the glass surface hardly scattered to the surroundings, shrank and adhered, there was no collapse of the characters due to bursting or dripping of the liquid, and the characters were easy to confirm.

[0090] On the other hand, for the aerosol products of Comparative Examples 1 to 4 in which nitrogen gas was used instead of carbon dioxide gas or carbon dioxide gas was not used, the bubbles adhering to the object had splashing and the width gradually expanded, so only thick lines could be drawn. FIG. 2 is an external appearance photograph of the bubbles formed using the aerosol product of Comparative Example 1, and FIG. 3 is an external appearance photograph of the bubbles formed using the aerosol product of Comparative Example 4. As shown in FIGS. 2 and 3, the sprayed bubbles became wider and the bubbles merged, making them difficult to read.

Claims

Claim 1 An aerosol product comprising an aerosol composition, an aerosol container filled with the aerosol composition and having a valve, and an injection member attached to the valve and having an injection hole through which the aerosol composition is injected. The aerosol composition is an aerosol product comprising a stock solution containing soap and water, a liquefied gas, and carbon dioxide gas. Claim 2 The carbon dioxide gas is dissolved in the liquid phase of the stock solution and the liquefied gas. The aerosol product according to claim 1, wherein the concentration of the carbon dioxide gas dissolved in the liquid phase at 25°C is 500 to 15,000 ppm. Claim 3 The cross-sectional area of the injection hole is 0.03 to 2.0 mm 2 The aerosol product according to claim 1 or 2, which is such. Claim 4 The aerosol product according to claim 1 or 2, wherein the content of the liquefied gas is 5 to 40% by mass in the aerosol composition.

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