Foaming aerosol product and method for using foaming aerosol product

Abstract

To provide an aerosol product for foaming capable of easily and efficiently forming a stable foam by mixing an object to be foamed with a discharged aerosol composition, and to provide a method for using the aerosol product for foaming.SOLUTION: Wherein the aerosol composition comprises a stock solution comprising a surfactant and water, and a liquefied gas, the liquefied gas is emulsified with the stock solution, and in the discharged aerosol composition, the amount of the liquefied gas remaining after 60 seconds in a state in which the discharged product is allowed to stand is 50% by mass or more when the amount of the liquefied gas contained in the discharged product immediately after discharge is 100% by mass.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a foam-generating aerosol product and a method for using the foam-generating aerosol product, and more particularly to a foam-generating aerosol product and a method for using the foam-generating aerosol product that can easily, efficiently, and efficiently form a stable foam by mixing an object to be foamed with an aerosol composition that has been discharged. [Background technology]

[0002] Conventionally, products for foaming a target object (a target object to be foamed) have been developed. Patent Document 1 discloses a hair treatment agent and a foaming method thereof, which comprises a first agent containing a reactive component, a second agent containing a reactive component, and a foaming agent, wherein at least one of the first and second agents contains a surfactant and water, and the foaming agent is an oil having a boiling point of -5 to 80°C. The foaming method described in Patent Document 1 involves mixing the first and second agents in an open container, adding the foaming agent to the mixture, and mixing to foam the mixture. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-184345 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the method described in Patent Document 1 uses an oil (isopentane) with a boiling point of −5 to 80° C. as the foaming agent. Therefore, when isopentane is added to a mixture of the first and second parts, it easily evaporates without participating in foaming, making the method inefficient.

[0005] The present invention has been made in consideration of such conventional problems, and aims to provide a foam-making aerosol product and a method for using a foam-making aerosol product that can easily, efficiently, and form a stable foam by mixing the object to be foamed with the ejected aerosol composition. [Means for solving the problem]

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

[0007] (1) An aerosol product for discharging an aerosol composition, which is used to form a foam by mixing an object to be foamed with the discharged aerosol composition, the aerosol composition containing a concentrate containing a surfactant and water and a liquefied gas, the liquefied gas being emulsified with the concentrate, and the amount of liquefied gas remaining in the discharged aerosol composition immediately after discharge is 100% by mass, and when the discharged product is allowed to stand, the amount of liquefied gas remaining after 60 seconds is 50% by mass or more.

[0008] According to this configuration, the product discharged from the foam-making aerosol product contains an emulsified liquefied gas inside, and has the ability to retain a specific liquefied gas. When this product is combined with a foam-making object, the liquefied gas vaporizes, foaming the foam-making object easily and efficiently to form a stable foam.

[0009] (2) The foam-generating aerosol product according to (1), wherein the concentrate contains a water-soluble polymer.

[0010] With this configuration, the discharged product can easily retain liquefied gas inside, and by combining it with a foam-forming object, the foam-forming object can be foamed more easily and efficiently. Furthermore, because the water-soluble polymer is blended, the foam quality of the resulting foam, such as foam spreadability and adhesion, can be easily changed as desired.

[0011] (3) The foam-generating aerosol product according to (1) or (2), wherein the aerosol composition contains carbon dioxide gas.

[0012] With this configuration, the foam-generating aerosol product is more likely to produce foam with better foam quality.

[0013] (4) The foam-generating aerosol product according to any one of (1) to (3), wherein the chlorine ion concentration of the foam-generating object is 100 ppm or more.

[0014] With this configuration, the foam-generating aerosol product can easily and efficiently foam an object to be foamed that has a high concentration of chloride ions, making it easier to achieve cleaning effects, treatment effects, and the like.

[0015] (5) The foam-generating aerosol product according to any one of (1) to (4), wherein the object to be foamed has a pH of 6 or less.

[0016] According to this configuration, the foam-making aerosol product can easily and efficiently foam a foaming target having a low pH, and therefore is highly stable and easy to achieve an effect.

[0017] (6) A method of using a foam-generating aerosol product to form a foam, comprising a step of forming a foam by mixing the ejected aerosol composition with an object to be foamed, wherein the aerosol composition contained in the foam-generating aerosol product comprises a concentrate containing a surfactant and water, and a liquefied gas emulsified with the concentrate.

[0018] According to this configuration, the material discharged from the foam-making aerosol product contains an emulsified liquefied gas inside. When this material is mixed with the foam-making object, the liquefied gas vaporizes, foaming the foam-making object easily and efficiently to form a stable foam. [Effects of the Invention]

[0019] According to the present invention, it is possible to provide a foam-making aerosol product and a method for using a foam-making aerosol product that can easily, efficiently, and stably form a foam by mixing the object to be foamed with the ejected aerosol composition. DETAILED DESCRIPTION OF THE INVENTION

[0020] <Foam-forming aerosol products> An aerosol product for foaming (hereinafter also referred to as an aerosol product) according to one embodiment of the present invention is an aerosol product for discharging an aerosol composition. The aerosol product is used to form a foam by mixing an object to be foamed with the discharged aerosol composition. The aerosol composition contains a concentrate containing a surfactant and water, and liquefied gas. The liquefied gas is emulsified with the concentrate. The amount of liquefied gas remaining in the discharged aerosol composition immediately after discharge is 100% by mass, and after 60 seconds the amount of liquefied gas remaining in the discharged product is left to stand, is 50% by mass or more. Each of these will be explained below.

[0021] (Object to be foamed) The foam-forming object is an object that is desired to be foamed when used. The foam-forming object is not particularly limited. Examples of the foam-forming object include emulsion, lotion, sunscreen, face wash, liquid soap, bar soap, shampoo, treatment, hair dye, hair milk, mouthwash, liquid detergent, pipe cleaner, food, etc.

[0022] The form of the foaming object is not particularly limited. For example, the foaming object may be in a liquid or cream form, or may be in a solid form. If the foaming object is in a solid form, it can be foamed by adding water or dissolving it in a discharged product.

[0023] The chlorine ion concentration of the foaming object may be 100 ppm or more, or may be 200 ppm or more. For example, foaming objects with a chlorine ion concentration of 100 ppm or more include facial cleansers, shampoos, treatments, liquid detergents, cleaning agents, and other products containing ionic surfactants. Because foaming objects with high chlorine ion concentrations are prone to corroding metal containers, conventional designs have been designed to have low chlorine ion concentrations, but this has sometimes resulted in insufficient effectiveness. However, by using the foaming aerosol product of this embodiment, foaming objects with high chlorine ion concentrations can be easily and efficiently foamed, making it easier to achieve the effects of the ionic surfactant.

[0024] The pH of the foaming target may be 6 or less, or 5 or less. For example, foaming targets with a pH of 6 or less include the oxidizing agent (second agent) of an oxidative hair dye, an acidic hair dye, etc. Such foaming targets with low pH have traditionally been designed to have a pH close to neutral because they are prone to corroding metal containers, but this can result in reduced stability or insufficient effectiveness. However, the foaming aerosol product of this embodiment can easily and efficiently foam a foaming target with a low pH, making it easier to achieve hair dyeing effects.

[0025] The pH of the foaming target may be 9 or higher, or 10 or higher. For example, a foaming target with a pH of 9 or higher is the first agent of an oxidation hair dye. Such foaming targets with a high pH have traditionally been designed to have a pH close to neutral because they are prone to corroding metal containers, but this can result in reduced stability or insufficient effectiveness. However, the foaming aerosol product of this embodiment has the advantage of easily and efficiently foaming a foaming target with a high pH, ​​making it easier to achieve hair dyeing effects.

[0026] The foam-forming object does not contain water, but may contain an active ingredient that exerts its effect upon contact with water. For example, an active ingredient that exerts its effect upon contact with water is an antiperspirant such as chlorohydroxyaluminum. Conventionally, active ingredients that exert their effect upon contact with water could not contain water and could not be ejected in foam form. However, the foam-forming aerosol product of this embodiment can be applied locally as foam, and further, an antiperspirant effect can be obtained immediately.

[0027] (Aerosol composition) The aerosol composition of the present embodiment contains a concentrate containing a surfactant and water, and a liquefied gas.

[0028] (Undiluted) Surfactants Surfactants are used for the purposes of emulsifying the concentrate and liquefied gas in the aerosol container, retaining the liquefied gas in the discharged product, and foaming the target material.

[0029] The surfactant is not particularly limited. Examples of the surfactant include polyoxyethylene polyoxypropylene alkyl ethers such as POE·POP cetyl ether and POE·POP decyltetradecyl ether, polyoxyethylene sorbitan fatty acid esters such as POE sorbitan monolaurate, POE sorbitan monostearate, and POE sorbitan monooleate, polyoxyethylene alkyl ethers such as POE cetyl ether, POE stearyl ether, POE oleyl ether, POE lauryl ether, POE behenyl ether, POE octyldodecyl ether, POE isocetyl ether, and POE isostearyl ether, polyoxyethylene glycerin fatty acid esters such as POE glyceryl monostearate, polyoxyethylene hydrogenated castor oils such as POE hydrogenated castor oil, polyethylene glycol fatty acid esters such as polyethylene glycol monostearate, hexaglyceryl monolaurate, hexaglyceryl monomyristate, pentaglyceryl monolaurate, and pentaglyceryl monomyristate. nonionic surfactants such as polyglycerin fatty acid esters such as glyceryl, pentaglyceryl monooleate, pentaglyceryl monostearate, decaglyceryl monolaurate, decaglyceryl monomyristate, decaglyceryl monostearate, decaglyceryl monoisostearate, decaglyceryl monooleate, and decaglyceryl monolinoleate; polyoxyethylene glycerin fatty acid esters such as POE glyceryl monooleate; 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; and monoglycerin fatty acid esters such as glyceryl monomyristate and glyceryl monostearate;Anionic surfactants include saponified 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; polyoxyethylene alkyl ether phosphates; alkyl sulfates; polyoxyethylene alkyl ether sulfates; alkyl ether carboxylates; and sulfonates; amino acid 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);

[0030] The content of the surfactant is not particularly limited. For example, the content of the surfactant in the concentrate is preferably 0.05% by mass or more, and more preferably 0.1% by mass or more. Furthermore, the content of the surfactant in the concentrate is preferably 10% by mass or less, and more preferably 8% by mass or less. When the surfactant content is within the above range, the concentrate is easily emulsified with the liquefied gas. As a result, the discharged product easily retains the liquefied gas, and when mixed with the object to be foamed, the object to be foamed can be easily foamed efficiently.

[0031] ·water Water is the main solvent of the concentrate, and a surfactant is used to emulsify the liquefied gas in the concentrate inside the aerosol container, making the liquefied gas contained in the exhaled product easier to foam when mixed with the object to be foamed.

[0032] The water is not particularly limited, and examples thereof include purified water, ion-exchanged water, deep sea water, and alkaline ionized water.

[0033] The water content in the concentrate is preferably 70% by mass or more, more preferably 80% by mass or more. The water content in the concentrate is preferably 99.5% by mass or less, more preferably 99% by mass or less. When the water content is within the above range, the discharged material easily foams when mixed with the foaming object.

[0034] Other ingredients The concentrate may contain, in addition to surfactants and water, water-soluble polymers, active ingredients, alcohols, oils, powders, and the like.

[0035] The water-soluble polymer is preferably blended for the purposes of retaining the liquefied gas in the discharged product, vaporizing it when mixed with the foaming object to easily foam, changing the foam quality, etc. Furthermore, this makes it easy to change the foam quality of the resulting foam, such as the foam spreadability and adhesion, as desired.

[0036] 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.

[0037] The content of the water-soluble polymer in the concentrate 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 concentrate 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 liquefied gas is easily retained in the discharged product, and when mixed with the target substance, it is easily vaporized and foamed. Furthermore, the foam quality of the foamed product can be easily adjusted for aerosol products.

[0038] The active ingredient is used for the purpose of adding an effect to the target object.

[0039] The active ingredient is not particularly limited. The active ingredient can be appropriately selected depending on the application and purpose of adding an effect to the foaming object. Examples of the active ingredient include cooling agents such as l-menthol and camphor, antiperspirants such as isopropylmethylphenol, astringents such as zinc oxide, allantoin hydroxyaluminum and citric acid, anti-inflammatory agents such as allantoin, glycyrrhetinic acid, dipotassium glycyrrhizinate and azulene, antipruritics such as crotamiton and d-camphor, anti-inflammatory analgesics such as methyl salicylate, indomethacin, piroxicam, felbinac and ketoprofen, antifungals such as oxiconazole, clotrimazole, sulconazole, bifonazole, miconazole, isoconazole, econazole, tioconazole, butenafine and their hydrochlorides, nitrates and acetates, dibucaine hydrochloride and tetrahydrofuran hydrochloride. Local anesthetics such as caine, lidocaine, and lidocaine hydrochloride; antihistamines such as diphenhydramine, diphenhydramine hydrochloride, and chlorpheniramine maleate; bactericides and disinfectants such as parahydroxybenzoates, sodium benzoate, phenoxyethanol, benzalkonium chloride, benzethonium chloride, and chlorhexidine chloride; moisturizers such as collagen, xylitol, sorbitol, hyaluronic acid, caronic acid, sodium lactate, dl-pyrrolidone carboxylate, keratin, lecithin, and urea; deodorants such as lauric acid methacrylate, methyl benzoate, methyl phenylacetate, geranyl clotrate, acetophenone myristate, benzyl acetate, and benzyl propionate;Pest repellents such as N-diethyl-m-toluamide (DEET) and caprylic acid diethylamide, UV absorbers such as diethylaminohydroxybenzoyl hexyl benzoate, 2-ethylhexyl paramethoxycinnamate, ethylhexyl triazone, oxybenzone, hydroxybenzophenone sulfonic acid, dihydroxybenzophenone sodium sulfonate, and dihydroxybenzophenone, UV scattering agents such as zinc oxide and titanium oxide, retinol, retinol acetate, retinol palmitate, calcium pantothenate, and ascorbyl palmitate. Vitamins such as lactic acid, sodium ascorbate, dl-α-tocopherol, tocopherol acetate, tocopherol, and mixtures thereof; antioxidants such as ascorbic acid, α-tocopherol, and dibutylhydroxytoluene; extracts such as peony extract, loofah extract, rose extract, lemon extract, aloe extract, calamus root extract, eucalyptus extract, sage extract, tea extract, seaweed extract, placenta extract, and silk extract; whitening agents such as arbutin and kojic acid; and various fragrances such as natural and synthetic fragrances.

[0040] 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 concentrate is preferably 0.01% by mass or more, more preferably 0.05% by mass or more. Furthermore, the content of the active ingredient is preferably 10% by mass or less, more preferably 8% by mass or less. By having the content of the active ingredient within the above range, it is easy to impart the effect of the active ingredient to the object to be foamed.

[0041] Alcohols are used to adjust the effervescence, etc.

[0042] The alcohol is not particularly limited, and examples of the alcohol 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.

[0043] When alcohols are blended, the content of the alcohols is not particularly limited. For example, the content of the alcohols in the concentrate is preferably 0.1% by mass or more, more preferably 0.3% by mass or more. Furthermore, the content of the alcohols in the concentrate is preferably 20% by mass or less, more preferably 15% by mass or less. By having the content of the alcohols within the above range, the aerosol product can easily adjust the foaming properties of the object to be foamed.

[0044] The oil agent is used for purposes such as keeping the liquefied gas in the discharged material for a long time and causing large bubbles when mixed with the material to be foamed.

[0045] 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.

[0046] When an oil is blended, the content of the oil is not particularly limited. For example, the content of the oil in the concentrate 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 concentrate is preferably 10% by mass or less, and more preferably 8% by mass or less. When the content of the oil is within the above range, the aerosol product easily retains liquefied gas in the discharged product, and is easily vaporized and foamed when mixed with the object to be foamed.

[0047] The powder is used for purposes such as facilitating emulsification of the concentrate and liquefied gas, and imparting a smooth feel to improve the feel when used.

[0048] 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.

[0049] When a powder is blended, the content of the powder is not particularly limited. For example, the content of the powder in the concentrate is preferably 0.01% by mass or more, more preferably 0.05% by mass or more. Furthermore, the content of the powder in the concentrate is preferably 5% by mass or less, more preferably 3% by mass or less. When the powder content is within the above range, the concentrate and liquefied gas in the aerosol product are easily emulsified, and the effects of the powder, such as improved usability, are easily obtained.

[0050] The method for preparing the stock solution is not particularly limited. For example, the stock solution can be prepared by dissolving a surfactant in water. Optional components such as water-soluble polymers and active ingredients may be added to the water, or if they are insoluble in water, they may be dissolved in alcohols or oils and then added.

[0051] The content of the concentrate is not particularly limited. For example, the content of the concentrate in the aerosol composition is preferably 15% by mass or more, and more preferably 20% by mass or more. The content of the concentrate in the aerosol composition is preferably 60% by mass or less, and more preferably 55% by mass or less. When the content of the concentrate is within the above range, the aerosol product is likely to emulsify the concentrate and the liquefied gas, and the liquefied gas is likely to be retained in the exhaled product.

[0052] (liquefied gas) Liquefied gas is used for purposes such as foaming an object.

[0053] The liquefied gas is not particularly limited. For example, the liquefied gas preferably has a boiling point of 5°C or less, since it can be easily foamed when mixed with the foaming target. Examples of suitable liquefied gases include liquefied petroleum gases such as propane (boiling point -42.1°C), normal butane (boiling point -0.5°C), isobutane (boiling point -11.7°C), and mixtures thereof, hydrofluoroolefins such as trans-1,3,3,3-tetrafluoropropene (boiling point -19.0°C), and dimethyl ether (boiling point -24.9°C), and mixtures thereof. The liquefied gas is preferably a liquefied petroleum gas having a pressure of 0.15 to 0.3 MPa at 25°C, since it is easy to fill the required amount of carbon dioxide gas, which will be described later, and the effects of carbon dioxide gas can be easily obtained.

[0054] The content of the liquefied gas is not particularly limited. For example, the content of the liquefied gas in the aerosol composition is preferably 40% by mass or more, more preferably 45% by mass or more. Furthermore, the content of the liquefied gas in the aerosol composition is preferably 85% by mass or less, more preferably 80% by mass or less. When the content of the liquefied gas is within the above range, the aerosol product is likely to emulsify the concentrate and the liquefied gas, and the liquefied gas is likely to be retained in the discharged product.

[0055] (carbon dioxide) The aerosol composition of the present embodiment preferably contains carbon dioxide gas. Carbon dioxide gas is used for purposes such as improving foam quality. Carbon dioxide gas is partially dissolved in the aerosol composition in the aerosol container, and vaporizes upon ejection, thereby improving foam quality by making the bubbles finer.

[0056] The carbon dioxide gas content is not particularly limited. For example, the carbon dioxide gas content is preferably an amount that causes the aerosol composition to have a pressure of 0.25 MPa or more, and more preferably 0.3 MPa or more at 25°C. The carbon dioxide gas content is preferably an amount that causes the aerosol composition to have a pressure of 0.5 MPa or less, and more preferably 0.45 MPa or less. By keeping the carbon dioxide gas content within the above range, the aerosol product is likely to have an effect of improving foam quality.

[0057] Returning to the explanation of the aerosol product as a whole, the method for preparing the aerosol product and the aerosol composition is not particularly limited. For example, the aerosol composition is prepared by filling a stock solution into a pressure-resistant container, attaching a valve to the pressure-resistant container, and sealing it. Next, liquefied gas is filled through the valve, and the liquefied gas is emulsified with the stock solution by, for example, shaking the pressure-resistant container. When compressed gas is filled, the compressed gas can be filled through the valve. In this manner, an aerosol product filled with an aerosol composition can be produced.

[0058] Regarding the liquefied gas retention capacity of the discharged product, the aerosol product of this embodiment is sufficient if the amount of liquefied gas remaining in the discharged product after 60 seconds is 50% by mass or more, preferably 55% by mass or more, assuming that the amount of liquefied gas contained in the discharged product immediately after discharge is 100% by mass. In this embodiment, the liquefied gas retention capacity can be measured by the following method. (Method for measuring the retention capacity of liquefied gas) The foam-generating aerosol product is immersed in a thermostatic water bath at 25°C for 30 minutes and then dispensed into a beaker with an inner diameter of 5 cm. The amount of aerosol composition dispensed (A) is calculated from the mass of the aerosol product before and after dispensing. The mass of the beaker is measured before and after dispensing, and the amount of dispensed material (A0) in the beaker immediately after dispensing is calculated. The beaker is placed on a balance, and the mass is measured every 30 seconds (t), to calculate the amount of dispensed material (At) after a specified time has elapsed. The amount of dispensed concentrate (B) and liquefied gas (G) is calculated from the amount dispensed (A) and the mass ratio of the concentrate to the liquefied gas in the aerosol composition. Assuming that the mass of the concentrate (B) does not decrease after a specified time, the amount of liquefied gas (Gt) is calculated by subtracting the concentrate (B) from the dispensed material (At). The retention force of the liquefied gas is calculated using the following formula: Liquefied gas retention capacity = Liquefied gas after a specified time has elapsed (Gt) / Liquefied gas immediately after discharge (G0)

[0059] <How to use foam-generating aerosol products> A method of using a foam-generating aerosol product according to one embodiment of the present invention is a method of using the foam-generating aerosol product to form a foam. The method of using the foam-generating aerosol product includes a step of forming a foam by mixing a discharged aerosol composition with an object to be foamed. The aerosol composition contained in the foam-generating aerosol product includes a concentrate containing a surfactant and water, and a liquefied gas emulsified with the concentrate. The object to be foamed, the aerosol product, and the aerosol composition are the same as those described above in relation to the embodiment of the aerosol product. Therefore, redundant explanations may be omitted as appropriate.

[0060] According to the method for using the foam-generating aerosol product of this embodiment, first, the ejected aerosol composition (ejected product) is mixed with the object to be foamed. The aerosol composition may be ejected directly onto the object to be foamed, or a separately ejected product may be mixed with the object to be foamed.

[0061] The method for mixing the foam-forming material and the discharged material is not particularly limited. As an example, the foam-forming material and the discharged material may be mixed together using the palm of the hand or the like.

[0062] Immediately after ejection, the discharged material is an emulsified mixture of the concentrate and the liquefied gas, with the liquefied gas retained in the concentrate. When this discharged material is mixed with the object to be foamed, the liquefied gas vaporizes, and the object to be foamed can be easily and efficiently foamed.

[0063] As described above, according to the method of using the foam-making aerosol product of this embodiment, a stable foam of the object to be foamed can be formed. [Example]

[0064] 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."

[0065] Example 1 An aluminum pressure container was filled with 40 g of concentrate 1 shown in Table 1 below, and the container was sealed with a valve. 60 g of liquefied petroleum gas (pressure of 0.20 MPa at 25°C) was then poured into the container through the valve. The concentrate and liquefied petroleum gas were emulsified in the container (oil-in-water type), and carbon dioxide gas was poured into the container through the valve, producing a foam-generating aerosol product. The pressure inside the container at 25°C was 0.35 MPa.

[0066] [Table 1]

[0067] Example 2 An aluminum pressure container was filled with 25 g of concentrate 2 shown in Table 2 below, and the container was sealed with a valve. 75 g of liquefied petroleum gas (pressure of 0.20 MPa at 25°C) was then poured into the container through the valve. The concentrate and liquefied petroleum gas were emulsified in the container (oil-in-water type) to produce a foam-generating aerosol product. The pressure inside the container at 25°C was 0.22 MPa.

[0068] [Table 2]

[0069] (Comparative Example 1) An aluminum pressure container was filled with 80 g of concentrate 3 shown in Table 3 below, and the container was sealed with a valve. 20 g of liquefied petroleum gas (pressure of 0.40 MPa at 25°C) was then poured into the container through the valve. The concentrate and liquefied petroleum gas were emulsified (oil-in-water type) in the container to produce an aerosol product. The pressure inside the container at 25°C was 0.42 MPa.

[0070] [Table 3]

[0071] (Comparative Example 2) An aluminum pressure container was filled with 60 g of concentrate 4 shown in Table 4 below, and the container was sealed with a valve. 40 g of liquefied petroleum gas (pressure of 0.20 MPa at 25°C) was then poured into the container through the valve. The concentrate and liquefied petroleum gas were emulsified in the container (water-in-oil type) to produce an aerosol product. The pressure inside the container at 25°C was 0.22 MPa.

[0072] [Table 4]

[0073] The foam-generating aerosol products obtained in Examples 1 and 2 and Comparative Examples 1 and 2 were evaluated for their ability to retain liquefied gas by the following evaluation method.

[0074] (Liquid gas retention capacity) The foam-generating aerosol product was immersed in a thermostatic water bath at 25°C for 30 minutes and then dispensed into a beaker with an inner diameter of 5 cm. The dispensed amount (A) of the aerosol composition was calculated from the mass of the aerosol product before and after dispensing. The mass of the beaker was measured before and after dispensing, and the amount of dispensed material (A0) in the beaker immediately after dispensing was calculated. The beaker was placed on a balance, and the mass was measured every 30 seconds (t), and the amount of dispensed material (At) after a predetermined time had elapsed was calculated. The amount of dispensed concentrate (B) and liquefied gas (G) was calculated from the dispensed amount (A) and the mass ratio of the concentrate to the liquefied gas in the aerosol composition. Assuming that the mass of the concentrate (B) did not decrease after a predetermined time, the amount of liquefied gas (Gt) was calculated by subtracting the concentrate (B) from the dispensed material (At). The retention of the liquefied gas was evaluated using the value calculated using the following formula. The results are shown in Table 5. Liquefied gas retention capacity = Liquefied gas after a specified time has elapsed (Gt) / Liquefied gas immediately after discharge (G0)

[0075] [Table 5]

[0076] The foam-forming aerosol product of Example 1 was discharged in a gel state, and about 75% of the liquefied gas in the discharged product remained after 60 seconds, and about 60% remained even after 120 seconds, demonstrating very high liquefied gas retention. The foam-forming aerosol product of Example 2 was discharged in a frozen state, and about 60% of the liquefied gas in the discharged product remained after 60 seconds, and about 23% remained even after 120 seconds, demonstrating high liquefied gas retention. On the other hand, the aerosol product of Comparative Example 1 was discharged in a foam state, and the liquefied gas in the discharged product was only about 43% after 60 seconds and about 7% after 120 seconds. Furthermore, the foam-forming aerosol product of Comparative Example 1 had a small amount of liquefied gas immediately after discharge, and did not achieve a foaming effect even when discharged into the target object (the facial cleansing cream of Use Example 1) and mixed. The aerosol product of Comparative Example 2 was ejected in a spray form, and almost no liquefied gas remained in the ejected product immediately after ejection, and even when it was ejected into the target object (the facial cleansing cream of Usage Example 1) and mixed, no foaming effect was obtained.

[0077] (Example 1: Facial cleansing cream) A commercially available face wash cream (chloride ion concentration: 2350 ppm) was placed in the palm of the hand, and the aerosol composition from the foam-generating aerosol product of Example 1 was dispensed and mixed therein. As a result, a very fine and viscous foam was obtained. This foam itself acted as a cushion, and did not irritate the face (skin).

[0078] (Example 2: Hair Milk) A slightly viscous commercially available hair milk was placed in the palm of the hand, and the aerosol composition from the foam-generating aerosol product of Example 1 was dispensed and mixed therein. As a result, a creamy foam was obtained. This foam did not drip and was easy to spread on the hair.

[0079] (Example 3: Hair dye cream) When using a commercially available cream-type oxidation hair dye (first agent: pH 10.5, second agent: pH 3.5) at the roots of the hair, the first and second agents were applied as creams to the roots of the hair. On the other hand, when using it on the entire hair, the first and second agent creams were placed in the palm of the hand, and the aerosol composition from the foam-generating aerosol product of Example 1 was dispensed into each cream and mixed. As a result, a very fine and viscous foam was obtained. This foam did not drip and was easy to spread over the entire hair.

[0080] (Example 4: Liquid laundry detergent) A commercially available liquid laundry detergent (chlorine ion concentration: 1080 ppm) was soaked into a stain on clothing, and the aerosol composition was ejected from the foam-generating aerosol product of Example 1 onto the stain. The ejected material foamed, and the stain rose to the surface of the foam.

[0081] (Example 5: Pipe cleaner) A commercially available pipe cleaner (chlorine ion concentration: 720 ppm) was poured into the drain of a bathroom sink, and the aerosol composition was ejected from the foam-generating aerosol product of Example 1. The ejected material injected into the drain foamed, and the foam penetrated deep inside the pipe.

[0082] (Example 6: Meringue) Egg white was placed in a cooking bowl, and the aerosol composition was dispensed therein from the foam-generating aerosol product of Example 1. Meringue was formed by simply mixing with chopsticks for several tens of seconds.

[0083] (Example 7: Shampoo) A commercially available shampoo (chloride ion concentration: 5130 ppm) was placed in the palm of the hand, and the aerosol composition from the foam-generating aerosol product of Example 2 was dispensed therein and gently mixed in. As a result, a cool, viscous foam was obtained.

Claims

1. An aerosol product for discharging an aerosol composition, The aerosol composition is used to form a foam by mixing an object to be foamed with the aerosol composition that has been discharged, The aerosol composition comprises a concentrate containing a surfactant and water, and a liquefied gas; The liquefied gas is emulsified with the concentrate, The amount of liquefied gas remaining in the ejected aerosol composition immediately after ejection is 100% by mass, and when the ejected product is left standing for 60 seconds, the amount of liquefied gas remaining is 50% by mass or more.

2. The foam-generating aerosol product according to claim 1 , wherein the concentrate contains a water-soluble polymer.

3. 3. The foam-generating aerosol product according to claim 1, wherein the aerosol composition contains carbon dioxide gas.

4. 3. The foam-generating aerosol product according to claim 1, wherein the object to be foamed has a chloride ion concentration of 100 ppm or more.

5. 3. The foam-generating aerosol product according to claim 1, wherein the object to be foamed has a pH of 6 or less.

6. 1. A method of using a foam-generating aerosol product to form a foam, comprising: The method includes a step of mixing the discharged aerosol composition with an object to be foamed to form a foam, A method for using a foam-generating aerosol product, wherein the aerosol composition contained in the foam-generating aerosol product comprises a concentrate containing a surfactant and water, and a liquefied gas emulsified with the concentrate.

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