JP2015101545A - Emulsion aerosol composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an emulsion aerosol composition which is easy to emulsify an aqueous undiluted solution with a liquefied gas in production, and is easy to handle, and further hardly causes caking and easily re-emulsifies even if standing for a long period of time.SOLUTION: The invention provides an emulsion aerosol composition which contains an aqueous undiluted solution containing a surfactant and powders, and a liquefied gas. In the composition, the aqueous undiluted solution and the liquefied gas are emulsified, and the powder exists between the aqueous undiluted solution and the liquefied gas under the condition that the aqueous undiluted solution and the liquefied gas are separated.

Description

  The present invention relates to an emulsified aerosol composition. More specifically, it is an emulsified aerosol composition composed of an aqueous stock solution and a liquefied gas, which can easily emulsify an aqueous stock solution and a liquefied gas at the time of manufacture, and does not easily cause powder caking even if left standing for a long time. The present invention relates to an emulsified aerosol composition that is easily emulsified.

  Conventionally, an aerosol composition containing various powders as an emulsification aid has been studied for the purpose of improving ease of emulsification, emulsification stability, re-emulsification, and the like in an emulsified aerosol composition.

  For example, Patent Document 1 describes an aerosol composition containing a powder having a specific average primary particle size and a liquefied gas in a specific weight ratio. Patent Document 2 describes an emulsified aerosol composition containing two types of powders having different specific surface areas. Further, in Patent Document 3, the use of spherical powder promotes the uniformity of the filling state, improves the uniformity during discharge, and further, the spherical powder is made into a hollow spherical powder to improve the gas gas. It is described that dispersion can be suppressed.

  However, since the powders contained in the aerosol compositions of Patent Documents 1 and 2 are powders having a large true specific gravity, the powders settle and solidify (caking) at the bottom of the container when used for a long period of time. However, there is a problem that it is necessary to shake vigorously in order to re-disperse the powder, and a problem that the powder that cannot be dispersed completely becomes clogged in the middle of a passage such as an aerosol valve and cannot be injected. Patent Document 3 does not describe true specific gravity, and does not consider suppressing caking.

  In addition, when an aerosol composition containing powder is filled in an aerosol container made of a transparent synthetic resin such as polyethylene terephthalate, the powder settled on the bottom is easily noticeable, especially in order to ensure the pressure resistance of the aerosol container. In the case of using a petaloid structure, there is a problem that the powder aggregates tightly in the concave portion at the bottom, and it is difficult to re-emulsify even if a stirring ball is inserted.

JP 2011-178865 A JP 2013-112798 A Japanese Patent Laid-Open No. 11-100308

  The present invention has been made in view of the above problems, and it is easy to emulsify an aqueous stock solution and a liquefied gas at the time of production, and is easy to handle. An object of the present invention is to provide an emulsified aerosol composition that can be easily re-emulsified.

  The present invention is an emulsified aerosol composition comprising an aqueous stock solution containing a surfactant and a powder and a liquefied gas, wherein the aqueous stock solution and the liquefied gas are emulsified, wherein the powder comprises an aqueous stock solution and a liquefied gas. In the separated state, the present invention relates to an emulsified aerosol composition that exists between an aqueous stock solution and a liquefied gas.

  It is preferable that the true specific gravity of the powder is 0.10 to 0.80 g / ml.

  It is preferable that the powder is hydrophilic and the true specific gravity is smaller than the specific gravity of the liquefied gas.

  It is preferable that the powder has a hollow structure.

It is preferable that the powder has a specific surface area of 0.1 to 70 m ² / g.

  It is preferable to contain 10-60 mass% of the aqueous stock solution and 40-90 mass% of the liquefied gas.

  According to the present invention, the powder is contained in the aqueous stock solution, and in the state where the aqueous stock solution and the liquefied gas are separated, the powder is present between the aqueous stock solution and the liquefied gas, whereby the aqueous stock solution and the liquefied gas are Thus, it is possible to provide an emulsified aerosol composition that is easy to emulsify and easy to produce, and is less susceptible to caking even after standing for a long period of time and is easily re-emulsified.

  The emulsified aerosol composition of the present invention is an emulsified aerosol composition containing an aqueous stock solution containing a surfactant and powder and a liquefied gas.

  The surfactant is used for the purpose of emulsifying the aqueous stock solution and the liquefied gas by dispersing the powder.

Examples of the surfactant include polyoxyethylene fatty acid esters such as POE monolaurate, POE monostearate, and POE monooleate, PEG-20 sorbitan cocoate, POE sorbitan monolaurate, POE sorbitan monostearate, and POE sorbitan monooleate. Polyoxyethylene sorbitan fatty acid ester such as POE, polyoxyethylene glyceryl fatty acid ester such as POE glyceryl monostearate, POE glyceryl monooleate, poly such as POE sorbite monolaurate, POE sorbite tetrastearate, POE sorbite tetraoleate Oxyethylene sorbite fatty acid ester, POE cetyl ether, POE stearyl ether, POE oleyl ether, POE laur Polyether, POE behenyl ether, POE octyldodecyl ether, POE isocetyl ether, POE isostearyl ether, and other polyoxyethylene alkyl ethers, POE / POP cetyl ether, POE / POP decyl tetradecyl ether, and other polyoxyethylene polyoxypropylene alkyls Ether, decaglyceryl monolaurate, decaglyceryl monomyristate, decaglyceryl monostearate, decaglyceryl monooleate, decaglyceryl dioleate, hexaglyceryl monolaurate, hexaglyceryl monostearate, hexaglyceryl monooleate, etc. Non-ionic surfactants such as polyglycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene methyl Silicone surfactants such as resiloxane copolymer, polyoxypropylene / methylpolysiloxane copolymer, poly (oxyethylene / oxypropylene) / methylpolysiloxane copolymer, surfactin sodium, cyclodextrin, hydrogenase Natural surfactants such as soy lecithin,
Etc.

  The content of the surfactant is preferably 0.1 to 15% by mass, more preferably 0.3 to 10% by mass in the aqueous stock solution. When the content of the surfactant is less than 0.1% by mass, the aqueous stock solution and the liquefied gas tend to be difficult to emulsify, and when the content is more than 15% by mass, the surfactant tends to remain on the skin. There is a tendency for the feeling of use to become worse, such as stickiness.

  The powder makes it easy to emulsify the aqueous stock solution and the liquefied gas in the aerosol container at the time of manufacture (initial emulsification). Even if the aqueous stock solution and the liquefied gas are separated after being left for a long time, before the consumer uses Easily emulsify by simply shaking (re-emulsification), keep the liquefied gas in the discharge for a long time, make it easy to freeze, enhance the feel and sound of crackling and foaming, etc. It is used for the purpose.

  Further, in the state where the aqueous stock solution and the liquefied gas are separated as the powder, by using the powder existing between the aqueous stock solution and the liquefied gas, the powder can be left standing for a long time in a state filled in an aerosol container. Even when the aqueous stock solution and the liquefied gas are separated, an emulsified aerosol composition that does not settle at the bottom of the container, that is, does not easily cause caking and can be easily re-emulsified.

  Furthermore, in the emulsified aerosol composition of the present invention, by using a powder having a hydrophilic surface as the powder, it is easy to disperse in an aqueous stock solution and begins to emulsify with a stirring action when filled with a liquefied gas, The subsequent shaking step of emulsifying the aqueous stock solution and the liquefied gas can be simplified, and the emulsified aerosol composition can be easily re-emulsified even after the aerosol product after emulsification is stored for a long time in a warehouse or the like.

In order for the powder to exist between the aqueous stock solution and the liquefied gas in a state where the aqueous stock solution and the liquefied gas are separated, the specific gravity of the aqueous stock solution (excluding powder) and the liquefied gas and the true specific gravity of the powder are: It is conceivable to combine them so as to satisfy the relationship of the following formula (1) or (2).
(1) Specific gravity of liquefied gas <True specific gravity of powder <Specific gravity of aqueous concentrate (excluding powder) (2) Specific gravity of aqueous concentrate (excluding powder) <True specific gravity of powder <Specific gravity of liquefied gas

Moreover, according to the present invention, the above relationship is
Even if the true specific gravity of the powder is less than the specific gravity of the liquefied gas <the specific gravity of the aqueous stock solution (excluding the powder), by using hydrophilic powder that satisfies the predetermined true specific gravity range, Even if the powder is separated, the upper surface of the liquefied gas is determined by the balance between the buoyancy of the powder that attempts to float in the liquefied gas in the upper layer and the affinity by the hydrophilic group of the powder surface that tends to disperse in the aqueous stock solution in the lower layer. Therefore, it is easy to be present at the interface between the aqueous stock solution and the liquefied gas without floating, so that an emulsified aerosol composition that can be easily re-emulsified can be obtained.

  The true specific gravity of the powder is preferably 0.10 to 0.80 g / ml, and more preferably 0.15 to 0.70 g / ml. If the true specific gravity is less than 0.10 g / ml, the specific gravity is too small compared to the aqueous stock solution or liquefied gas, so when the aqueous stock solution and liquefied gas are separated, they float on the upper surface of the liquefied gas and are re-emulsified Tend to be difficult to do. On the other hand, when it is larger than 0.80 g / ml, depending on the specific gravity of the aerosol composition, it settles at the bottom of the container, so that caking tends to occur and re-emulsification tends to be difficult.

The specific surface area of the powder is preferably ^{0.1~70m 2 / g, 0.5~60m 2 /} g is more preferable. When the specific surface area is smaller than 0.1 m ² / g, the contact area is too small, and thus the above-mentioned effect tends to be hardly obtained. When the specific surface area is larger than 70 m ² / g, other components are added to the surface of the powder. Tends to be adsorbed, dispersibility tends to deteriorate, and emulsification tends to be difficult. In addition, let the specific surface area in this invention be a specific surface area measured by BET method using nitrogen.

  Examples of the powder include silica beads, glass beads, and resin beads. Among these, a hollow structure is preferable from the viewpoint of easy adjustment to the true specific gravity, and hollow silica beads and hollow are particularly preferable from the viewpoint of excellent hydrophilicity. Glass beads are preferred.

  The content of the powder is preferably 0.01 to 10% by mass, and more preferably 0.50 to 5% by mass in the aqueous stock solution. When the content of the powder is less than 0.01% by mass, the effect of containing the powder tends to be difficult to obtain. On the other hand, when the amount is more than 10% by mass, the content tends to be too high and caking tends to occur.

  The aqueous stock solution may contain an active ingredient, alcohol, a water-soluble polymer, a pH adjuster, an oil component, and other powders depending on the performance and purpose of the product.

  The active ingredients are those that adhere to or volatilize the skin, etc., and are effective when released into the space. For example, 1-menthol, camphor, mint oil and other refreshing agents, crotamiton, d -Antipruritics such as camphor, anti-inflammatory analgesics such as methyl salicylate, indomethacin, piroxicam, felbinac, ketoprofen, oxyconazole, clotrimazole, sulconazole, bifonazole, miconazole, isconazole, econazole, thioconazole, butenafine, and their hydrochlorides Antifungal agents such as nitrates and acetates, astringents such as allantoin hydroxyaluminum, tannic acid, citric acid and lactic acid, anti-inflammatory agents such as allantoin, glycyrrhetinic acid, dipotassium glycyrrhizinate and azulene, dibu hydrochloride Local anesthetics such as indo, tetracaine hydrochloride, lidocaine, lidocaine hydrochloride, antihistamines such as diphenhydramine, diphenhydramine hydrochloride, chlorpheniramine maleate, derivatives such as carpronium chloride, tocopherol and tocopherol acetate, red pepper tincture, cantalis tincture, assembly extract , Garlic extract, benzyl nicotinate, minoxidil, betamethasone-17, 21-dipropionate, prostaglandin E2, and other blood circulation promoters, collagen, xylitol, sorbitol, aloe extract, ginkgo biloba extract, hyaluronic acid, sodium hyaluronate, sodium lactate , Moisturizers such as DL-pyrrolidonecarboxylate, keratin, casein, lecithin, urea, diethylaminohydroxybenzoylbenzoic acid Xylyl, ethylhexyl dimethylaminobenzoate, paraaminobenzoic acid, ethyl paraaminobenzoate, 2-ethylhexyl paradimethylaminobenzoate, ethylhexyl salicylate, ethylhexyl methoxycinnamate, methyl diisopropylcinnamate, octocrylene, oxybenzone-3, oxybenzone-4 , UV absorbers such as ethyl hexyl dimethoxybenzylidenedioxoimidazolidine propionate, phenylbenzimidazole sulfonic acid, polysilicon-15, t-butylmethoxydibenzoylmethane, methylenebisbenzotriazolyltetramethylbutylphenol, titanium oxide, zinc oxide UV scattering agents such as paraoxybenzoate, sodium benzoate, potassium sorbate, phenoxyethanol, benzoyl chloride Disinfectants such as sarkonium, benzethonium chloride, chlorhexidine chloride, photosensitizers, parachlormetacresol, amino acids such as glycine, alanine, leucine, aspartic acid, glutamic acid, arginine, calcium pantothenate, magnesium phosphate ascorbate, sodium ascorbate Vitamins such as N, N-diethyl-m-toluamide (diet), pest repellents such as caprylic acid diethylamide, herbal extracts, green tea extract, strawberry tannin, deodorizing ingredients such as silver, lauryldimethylaminoacetic acid betaine (lauryl) Betaine), stearyl betaine, amidopropyl betaine laurate, lauryl hydroxysulfo betaine, stearyl dimethylaminoacetic acid betaine, dodecylaminomethyldimethylsulfopropyl betaine , Alkylbetaines such as octadecylaminomethyldimethylsulfopropylbetaine, amide propylbetaine coconut, fatty acid amidepropylbetaine such as coconut oil fatty acid amidepropyldimethylaminoacetic acid betaine (cocamidopropylbetaine), cocamidopropylhydroxysultain, etc. Betaine type, alkylimidazole type such as 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine; amino acid type such as sodium lauroylglutamate, potassium lauroylglutamate, lauroylmethyl-β-alanine, lauryldimethylamine N -Amphoteric surfactants such as oxides, amine oxides such as oleyldimethylamine N-oxide, fatty acid soaps, alkyl sulfates, polyoxyethylenes Anionic surfactants such as polyalkyl ether sulfate, alkyl phosphate, polyoxyethylene alkyl ether phosphate, N-coconut oil fatty acid acyl-L-glutamic acid triethanolamine, N-coconut oil fatty acid acyl-L- Potassium glutamate, N-coconut oil fatty acid acyl-L-sodium glutamate, N-lauroyl-L-glutamic acid triethanolamine, N-lauroyl-L-potassium glutamate, N-lauroyl-L-sodium glutamate, N-myristoyl-L- N-acyl glutamate such as potassium glutamate, N-myristoyl-L-sodium glutamate and N-stearoyl-L-sodium glutamate, N-coconut oil fatty acid acyl-L-glutamic acid, N-lauroyl-L-glutamic acid, N N-acylglutamic acid such as stearoyl-L-glutamic acid, N-acylglycine salt such as N-coconut oil fatty acid acylglycine potassium, N-coconut oil fatty acid acylglycine sodium, N-coconut oil fatty acid acyl-DL-alanine triethanolamine And detergents such as N-acylalanine salts such as N-acylalanine salts, treatment agents such as cationic surfactants such as stearyltrimethylammonium chloride and cetyltrimethylammonium chloride, and fragrances.

  When the active ingredient is contained, the content in the aqueous stock solution is preferably 0.01 to 30% by mass, and more preferably 0.10 to 25% by mass. When the content of the active ingredient is less than 0.01% by mass, it is difficult to obtain the effect of the active ingredient, and when it is more than 30% by mass, emulsification may be inhibited.

  The alcohol is an active ingredient solvent that does not dissolve in water, and is used for the purpose of adjusting the state of the discharged product, for example, monohydric alcohols having 2 to 3 carbon atoms such as ethanol, isopropanol, ethylene glycol, propylene glycol, etc. 1,3-butylene glycol, diethylene glycol, dipropylene glycol, glycerin, diglycerin and other divalent polyols.

  When the alcohol is contained, the content in the aqueous stock solution is preferably 0.1 to 40% by mass, more preferably 0.3 to 30% by mass. When the content of the alcohol is less than 0.1% by mass, the effect of the alcohol is hardly obtained, and when the content is more than 40% by mass, the emulsification tends to be difficult.

  The water-soluble polymer increases the viscosity of the aqueous stock solution, disperses the powder for a long time, keeps the liquefied gas in the discharged material longer, makes it easier to freeze the aqueous stock solution, makes the crackling feel and sound stronger, etc. Used for purposes.

  Examples of the water-soluble polymer include cellulose-based polymers such as hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, carboxymethyl cellulose sodium, xanthan gum, carrageenan, gum arabic, tragacanth gum, cationized guar gum, guar gum, gellan gum, locust bean. Examples include gums such as gums, dextran, sodium carboxymethyldextran, dextrin, gelatin, pectin, starch, corn starch, wheat starch, sodium alginate, modified potato starch, carboxyvinyl polymer, and the like.

  When the water-soluble polymer is contained, the content in the aqueous stock solution is preferably 0.01 to 5% by mass, and more preferably 0.05 to 3% by mass. When the content of the water-soluble polymer is less than 0.01% by mass, it is difficult to obtain the effect of the water-soluble polymer. When the content is more than 5% by mass, the viscosity tends to be high and emulsification tends to be difficult. Tend to get worse.

  The pH adjuster is used for the purpose of adjusting the pH of the aqueous stock solution to reduce irritation to the skin and making the metal aerosol container difficult to corrode.

  Examples of the pH adjuster include triethanolamine (TEA), diethanolamine (DEA), monoethanolamine (MEA), diisopropanolamine (DIPA), 2-amino-2-methyl-1-propanol (AMP), Organic alkalis such as 2-amino-2-methyl-1,3-propanediol (AMPD), inorganic alkalis such as potassium hydroxide, sodium hydroxide, ammonium hydroxide, citric acid, sodium citrate, glycolic acid, lactic acid, Examples thereof include organic acids such as phosphoric acid and inorganic acids such as hydrochloric acid.

  When it contains the said pH adjuster, it is preferable to contain so that pH of a stock solution may be 5-9, Furthermore, 6-8. When the pH of the stock solution is lower than 5, the container tends to be corroded, and when the pH is higher than 9, irritation to the skin tends to become stronger.

  The oil component is used for the purpose of improving the feeling of use such as adjusting the state of the discharged substance, giving moisture to the skin, and as an active ingredient solvent that is difficult to dissolve in water.

  Examples of the oils include oils such as meadow foam oil, olive oil, camellia oil, corn oil, castor oil, safflower oil, jojoba oil, coconut oil, fatty acids such as myristic acid, stearic acid, oleic acid, cetyl alcohol, oleyl alcohol , Higher alcohols such as isostearyl alcohol, isopropyl myristate, isopropyl palmitate, cetyl isooctanoate, methylpentanediol dineopentanoate, diethylpentanediol dineopentanoate, neopentyl glycol di-2-ethylhexanoate, neopentyl glycol dicaprate , Propylene glycol dilaurate, ethylene glycol distearate, propylene glycol monostearate, propylene glycol monooleate, ethyl stearate Ester oils such as glycol, glyceryl tri-2-ethylhexanoate, glyceryl tri (capryl / caprate), isononyl isononanoate, isotridecyl isononanoate, diethoxyethyl succinate, diisostearyl malate, etc., dimethicone, methylpoly Siloxane, cyclopentasiloxane, cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, methylcyclopolysiloxane, tetrahydrotetramethylcyclotetrasiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, Silicone oils such as methyl hydrogen polysiloxane and methylphenyl polysiloxane, and hydrocarbons such as liquid paraffin and isoparaffin , And mixtures thereof, and the like.

  When the oil component is contained, the content in the aqueous stock solution is preferably 0.1 to 20% by mass, and more preferably 0.2 to 10% by mass. When the content of the oil is less than 0.1% by mass, the effect of the oil tends to be difficult to be obtained. When the content is more than 20% by mass, the drying property is deteriorated and the feeling of stickiness is increased. There is a tendency to decrease.

  Other powders (powder that does not exist between the aqueous stock solution and the liquefied gas in a state where the aqueous stock solution and the liquefied gas are separated) improve slipperiness when applied to the skin, and give a smooth feeling. You may mix | blend if it is a grade which does not inhibit the effect of this invention for the purpose of improving a usability | use_condition.

  The powder that does not exist between the aqueous stock solution and the liquefied gas in a state where the aqueous stock solution and the liquefied gas are separated, depends on the specific gravity of the aqueous stock solution and the liquefied gas, for example, various kinds whose true specific gravity is less than 0.10 g / ml Examples include powders and powders whose true specific gravity exceeds 0.80 g / ml. For example, talc, kaolin, magnesium carbonate, calcium carbonate, zinc silicate, magnesium silicate, aluminum silicate, calcium silicate, true specific gravity is Silica less than 0.10 g / ml, silica with true specific gravity greater than 0.80 g / ml, zeolite, ceramic powder, charcoal powder, nylon powder, silk powder, urethane powder, silicone powder, polyethylene powder, silica beads, glass beads And resin beads.

  The aqueous stock solution can be prepared by adding a surfactant and, if necessary, an active ingredient, a water-soluble polymer, and the like to water and mixing, and then adding and dispersing the powder therein. In addition, it is preferable that specific gravity in 20 degreeC of aqueous | water-based stock solution (except powder) is 0.85-1.0 g / ml.

  The water content is preferably 50 to 99.5% by mass in the aqueous stock solution, more preferably 55 to 99.0% by mass. When the water content is less than 50% by mass, it tends to be difficult to emulsify with the liquefied gas, and when it is more than 99.5% by mass, it becomes difficult to contain the necessary amount of surfactant or powder.

  The content of the aqueous stock solution is 10 to 60% by mass in the aerosol composition, and preferably 15 to 55% by mass. When the content of the aqueous stock solution is less than 10% by mass, the aqueous stock solution and the liquefied gas are easily separated, and when the content is more than 60% by mass, the specific gravity of the aerosol composition (emulsion) increases, There is a tendency that the specific gravity difference of becomes large and the powder tends to float.

  The liquefied gas is a liquid having a vapor pressure in an aerosol container and is emulsified with an aqueous stock solution. Vaporizes when discharged from the aerosol container, cools the discharged material and freezes, or foams and breaks the discharged material to give it a feel of crackling, and generates a desired sound Form it.

  Examples of the liquefied gas include propane (liquid specific gravity at 20 ° C .: 0.50 g / ml), normal butane (liquid specific gravity at 20 ° C .: 0.58 g / ml), and isobutane (liquid specific gravity at 20 ° C .: 0.56 g). Hydrocarbons having 3 to 5 carbon atoms such as isopentane (liquid specific gravity at 20 ° C .: 0.62 g / ml), normal pentane (liquid specific gravity at 20 ° C .: 0.63 g / ml); dimethyl ether (20 Liquid specific gravity at 0 ° C .: 0.66 g / ml); hydrofluoroolefins such as trans-1,3,3,3-tetrafluoroprop-1-ene (liquid specific gravity at 20 ° C .: 1.19 g / ml); and these And the like. Among these, it is preferable to use a lipophilic liquefied gas such as a hydrocarbon having 3 to 5 carbon atoms or hydrofluoroolefin from the viewpoint of easy emulsification with an aqueous stock solution, and in particular, the specific gravity is small and the difference from the true specific gravity of the powder. It is preferable to use a hydrocarbon having a small carbon number of 3 to 5. The specific gravity of the liquefied gas at 20 ° C. is preferably 0.50 to 0.70 g / ml.

  The content of the liquefied gas is preferably 40 to 90% by mass, more preferably 45 to 85% by mass in the aerosol composition. When the content of the liquefied gas is less than 40% by mass, the specific gravity of the aerosol composition (emulsion) is increased, the difference from the true specific gravity of the powder is increased, and the powder is liable to float, more than 90% by mass. When the amount is large, the aqueous stock solution and the liquefied gas tend to be easily separated.

  In addition to the liquefied gas, a compressed gas can be contained for the purpose of adjusting the pressure in the container and adjusting the discharge state. As compressed gas, carbon dioxide gas, nitrous oxide gas, nitrogen gas, compressed air, etc. can be contained, for example.

  The emulsified aerosol composition of the present invention is filled with an aqueous stock solution and filled with a liquefied gas under a cup, and then sealed with an aerosol valve fixed to the pressure vessel, and the aerosol container is shaken to liquefy the aqueous stock solution. It can manufacture by emulsifying gas. In addition, after filling the aqueous stock solution, an aerosol valve with a dip tube may be fixed to the pressure vessel, and the liquefied gas may be filled from the aerosol valve. In this case, since the emulsification proceeds by mixing the aqueous stock solution and the aerosol container by filling the liquefied gas, the shaking step can be further facilitated or made unnecessary.

  The emulsified aerosol composition of the present invention contains a powder, and in a state where the aqueous stock solution and the liquefied gas are separated, since the powder exists between the aqueous stock solution and the liquefied gas, it is easy to perform initial emulsification for a long time. Even if left standing, the powder does not settle and harden (caking) at the bottom of the container, and when the consumer uses it, just shake it lightly to return to the emulsified state immediately after production, and the effect of the discharged product as designed is obtained. Therefore, burn treatment, anti-inflammatory analgesic, antipruritic, skin protectant, antifungal, antiperspirant, astringent, anti-hot flash, cooling agent, sunscreen, repellent, shampoo, hair treatment, hair restorer, etc. It can be suitably used for space products such as human products, fragrances, deodorants and pollen removers applied to the skin and hair. Moreover, since it does not impair the external appearance even if it is filled in a transparent synthetic resin container such as polyethylene terephthalate, it can be designed using the external appearance of the aerosol composition, and the remaining amount can be confirmed visually.

  EXAMPLES Hereinafter, although an Example demonstrates this invention more concretely, this invention is not limited to these.

  The evaluation method is shown below.

(1) State of aerosol composition before emulsification A test aerosol product using a transparent glass pressure-resistant container (full volume 100 ml) was left in a thermostatic chamber at 25 ° C. for one day, and the appearance was evaluated according to the following criteria. .
○: The powder was present between the aqueous stock solution and the liquefied gas.
(Triangle | delta): Powder floated in the aqueous | water-based stock solution, and a part was settled to the container bottom part.
X: The powder had settled to the container bottom part.

(2) Initial emulsification Hold each test aerosol product and each reference product using a pressure vessel made of aluminum (filled volume: 100 ml) by hand, swing up and down with a width of 30 cm, and emulsify with one reciprocation as one time The number of times was counted, the number of each reference product was compared with the number of each example and comparative example, and the following criteria were evaluated.
○: 40% or less of standard product △: 41-60% of standard product
×: 61% or more of standard products

(3) Re-emulsification The aerosol product subjected to the initial emulsification test was left in a constant temperature room at 45 ° C for 3 months, and this aerosol product was held in the hand and shaken up and down with a width of 30cm, emulsifying one round trip. The number of times until this was counted and evaluated according to the following criteria.
○: Emulsified when shaken 3 times.
Δ: Emulsified when shaken 4 to 10 times.
X: It did not emulsify even if shaken 10 times.

(4) Redispersibility (with or without caking)
A test aerosol product using a transparent glass pressure vessel (full volume 100 ml) was emulsified with an aqueous stock solution and a liquefied gas, and then left in a constant temperature room at 40 ° C. for 3 months. It was held in hand, swung up and down with a width of 30 cm, one round trip was counted as one count, and the number of times until the powder was dispersed was counted and evaluated according to the following criteria.
○: The powder was uniformly dispersed when shaken 3 times.
Δ: The powder was uniformly dispersed when shaken 4 to 10 times.
X: Even if shaken 10 times, it was not uniformly dispersed.

Examples 1 to 5, Comparative Examples 1 to 3 and reference product 1 <Freezing type>
Each aqueous undiluted solution shown in Table 1 was prepared, and the obtained aqueous undiluted solution was filled in 10 g (25% by mass) each in a transparent glass pressure-resistant vessel and an aluminum pressure-resistant vessel (both filled amounts of 100 ml). Stuck. Next, 30 g (75% by mass) of liquefied gas was filled from an aerosol valve not equipped with a tube to produce a test aerosol product in which the aqueous stock solution and liquefied gas were separated. Moreover, the aerosol product using the aqueous | water-based stock solution which does not mix | blend the powder which replaced the powder with the purified water was manufactured as the reference | standard product 1 (use a pressure-resistant container made from aluminum). Evaluation of said (1)-(4) was performed about the obtained aerosol product for a test. The evaluation results are shown in Table 2.

＊１：ノルマルブタンとイソブタンの混合物、２０℃での蒸気圧：０．１５ＭＰａ
＊２：ＮＩＫＫＯＬ ＰＢＣ−４４（商品名）、日光ケミカルズ株式会社製
＊３：ＨＥＣ ＳＥ８５０（商品名）、ダイセルファインケム株式会社製
＊４：ＳＩＬＩＣＡ ＭＩＣＲＯ ＢＥＡＤ ＢＡ−１（商品名）、日揮触媒化成株式会社製（真比重：０．５ｇ／ｍｌ、比表面積：１ｍ^２／ｇ、親水性、中空シリカビーズ）
＊５：３ＭグラスバブルズＫ２０（商品名）住友スリーエム株式会社製
（真比重：０．２ｇ／ｍｌ、比表面積：６０ｍ^２／ｇ、親水性、中空ガラスビーズ）
＊６：３ＭグラスバブルズＳ３８（商品名）住友スリーエム株式会社製
（真比重：０．３８ｇ／ｍｌ、比表面積：４０ｍ^２／ｇ、親水性、中空ガラスビーズ）
＊７：３ＭグラスバブルズＳ６０ＨＳ（商品名）住友スリーエム株式会社製
（真比重：０．６ｇ／ｍｌ、比表面積：２４ｍ^２／ｇ、親水性、中空ガラスビーズ）
＊８：マツモトマイクロスフェアー Ｍ−６００（商品名）、松本油脂製薬株式会社製（真比重：０．９ｇ／ｍｌ、比表面積：８ｍ^２／ｇ、親水性、中空樹脂ビーズ）
＊９：クラウンタルクＰＰ（商品名）、松村産業株式会社製
（真比重：２．７ｇ／ｍｌ、比表面積：１．５ｍ^２／ｇ、親水性）
＊１０：サイリシア７１０（商品名）、富士シリシア化学株式会社製
（真比重：２．２ｇ／ｍｌ、比表面積：７００ｍ^２／ｇ、親水性、多孔質シリカ）
＊１１：アエロジル＃２００（商品名）、日本アエロジル株式会社製
（真比重：２．２ｇ／ｍｌ、比表面積：２００ｍ^２／ｇ、親水性、多孔質シリカ）

* 1: A mixture of normal butane and isobutane, vapor pressure at 20 ° C .: 0.15 MPa
* 2: NIKKOL PBC-44 (trade name), manufactured by Nikko Chemicals Co., Ltd. * 3: HEC SE850 (trade name), manufactured by Daicel Finechem Co., Ltd. * 4: SILICA MICRO BEAD BA-1 (trade name), JGC Catalysts & Chemicals Co., Ltd. Made by company (true specific gravity: 0.5 g / ml, specific surface area: 1 m ² / g, hydrophilic, hollow silica beads)
* 5: 3M Glass Bubbles K20 (trade name) manufactured by Sumitomo 3M Limited (true specific gravity: 0.2 g / ml, specific surface area: 60 m ² / g, hydrophilic, hollow glass beads)
* 6: 3M Glass Bubbles S38 (trade name) manufactured by Sumitomo 3M Limited (true specific gravity: 0.38 g / ml, specific surface area: 40 m ² / g, hydrophilic, hollow glass beads)
* 7: 3M Glass Bubbles S60HS (trade name) manufactured by Sumitomo 3M Limited (true specific gravity: 0.6 g / ml, specific surface area: 24 m ² / g, hydrophilic, hollow glass beads)
* 8: Matsumoto Microsphere M-600 (trade name), manufactured by Matsumoto Yushi Seiyaku Co., Ltd. (true specific gravity: 0.9 g / ml, specific surface area: 8 m ² / g, hydrophilic, hollow resin beads)
* 9: Crown talc PP (trade name), manufactured by Matsumura Sangyo Co., Ltd. (true specific gravity: 2.7 g / ml, specific surface area: 1.5 m ² / g, hydrophilic)
* 10: Silicia 710 (trade name), manufactured by Fuji Silysia Chemical Ltd. (true specific gravity: 2.2 g / ml, specific surface area: 700 m ² / g, hydrophilic, porous silica)
* 11: Aerosil # 200 (trade name), manufactured by Nippon Aerosil Co., Ltd. (true specific gravity: 2.2 g / ml, specific surface area: 200 m ² / g, hydrophilic, porous silica)

Examples 6 to 8, Comparative Examples 4 to 6 and reference product 2 <Floating foam type>
Each aqueous undiluted solution shown in Table 3 was prepared, and the obtained aqueous undiluted solution was filled into a transparent glass pressure vessel and an aluminum pressure vessel (both filled 100 ml) at a rate of 12 g (30% by mass). Stuck. Next, 28 g (70% by mass) of liquefied gas was filled from an aerosol valve not equipped with a tube to produce a test aerosol product in which the aqueous stock solution and liquefied gas were separated. Moreover, the aerosol product using the aqueous | water-based stock solution which does not mix | blend the powder which replaced the powder with the purified water was manufactured as the reference | standard product 2 (pressure-resistant container made from aluminum). Evaluation of said (1)-(4) was performed about the obtained aerosol product for a test. The evaluation results are shown in Table 4.

＊１２：ＴＬ−１０（商品名）、日光ケミカルズ株式会社製
＊１３：ＴＳ−１０Ｖ（商品名）、日光ケミカルズ株式会社製

* 12: TL-10 (trade name), manufactured by Nikko Chemicals Corporation * 13: TS-10V (trade name), manufactured by Nikko Chemicals Corporation

Examples 9 to 11, Comparative Examples 7 to 9 and Reference Product 3 <Flipable Gel Type>
Each aqueous undiluted solution shown in Table 5 was prepared, and the obtained aqueous undiluted solution was filled into a transparent glass pressure vessel and an aluminum pressure vessel (both 100 ml) in an amount of 16 g (40% by mass). Stuck. Next, 24 g (60% by mass) of liquefied gas was charged from an aerosol valve not equipped with a tube to produce a test aerosol product in which the aqueous stock solution and the liquefied gas were separated. Moreover, the aerosol product using the aqueous | water-based stock solution which does not mix | blend the powder which replaced the powder with the purified water was manufactured as the reference | standard product 3 (pressure-resistant container made from aluminum). Evaluation of said (1)-(4) was performed about the obtained aerosol product for a test. The evaluation results are shown in Table 6.

＊１４：ＤＣ ３４５（商品名）、東レ・ダウコーニング株式会社製

* 14: DC 345 (trade name), manufactured by Toray Dow Corning Co., Ltd.

Formulation Example 1 Coolant <Freeze Type>
Fill 17.5 g (25% by mass) of the following stock solution into a pressure-resistant container made of tinplate (full injection amount: 200 ml), fix the aerosol valve, and 52.5 g (75% by mass) of liquefied gas (* 1) from the aerosol valve. To produce an aerosol product. In addition, 8.75 g (25% by mass) of the following stock solution is filled in a transparent glass pressure-resistant container (full amount: 100 ml), an aerosol valve is fixed, and 26.25 g of liquefied gas (* 1) from the aerosol valve ( 75% by mass) to produce an aerosol product. Said evaluation was performed about the obtained aerosol product. Table 7 shows the evaluation results. In addition, what used the undiluted | stock solution which extracted powder from the following undiluted | stock solution was evaluated as a reference | standard product.

<Undiluted solution>
POE (20) POP (8) Cetyl ether (* 2) 0.5
Silica (* 4) 0.5
Hydroxyethyl cellulose (* 3) 0.1
Methylparaben 0.1
l-Menthol 0.1
Sodium benzoate 0.1
Purified water 98.6
Total (mass%) 100.0

Formulation Example 2 Foundation <Freeze Type>
12 g (30% by mass) of the following stock solution was filled in a transparent glass pressure vessel and an aluminum pressure vessel (both filled: 100 ml), and an aerosol valve was fixed. Then, 26 g (65% by mass) of liquefied gas (* 1) was filled from the aerosol valve, and further 2 g (5% by mass) of dimethyl ether was filled to produce an aerosol product. Said evaluation was performed about the obtained aerosol product. Table 7 shows the evaluation results. In addition, what used the undiluted | stock solution which extracted powder from the following undiluted | stock solution was evaluated as a reference | standard product.

<Undiluted solution>
POE (20) POP (8) Cetyl ether (* 2) 0.5
Silica (* 4) 0.5
Hydroxyethyl cellulose (* 3) 0.1
Methylparaben 0.1
Pigment 15.0
2-Ethylhexyl paradimethylaminobenzoate (* 15) 3.0
Olive oil (* 16) 2.0
Squalane (* 17) 1.0
Ethanol 5.0
Fragrance 0.1
Purified water 72.7
Total (mass%) 100.0
* 15: Escalol 507 (trade name), manufactured by ISP Japan Co., Ltd. * 16: Kurodamol OL (trade name), manufactured by Coda Japan Co., Ltd. * 17: Squalane (trade name), manufactured by Nikko Chemicals Co., Ltd.

Formulation Example 3 Cold Shampoo <Freeze Type>
12 g (30% by mass) of the following stock solution was filled in a transparent glass pressure vessel and an aluminum pressure vessel (both filled: 100 ml), and an aerosol valve was fixed. And 10g (25 mass%) of liquefied gas (* 1) was filled from the aerosol valve | bulb, and also 18g (45 mass%) of dimethyl ether was filled, and the aerosol product was manufactured. Said evaluation was performed about the obtained aerosol product. Table 7 shows the evaluation results. In addition, what used the undiluted | stock solution which extracted powder from the following undiluted | stock solution was evaluated as a reference | standard product.

<Undiluted solution>
Lauroyl sarcosine sodium (* 18) 10.0
Polyoxyethylene (20) oleyl ether (* 19) 5.0
Sodium polyoxyethylene lauryl ether sulfate (* 20) 10.0
Silica (* 4) 0.5
Hydroxyethyl cellulose (* 3) 0.5
Polyquaternium-10 (* 21) 0.1
Hydroxypropyltrimonium hyaluronate (* 22) 3.0
Diglycerin (* 23) 2.0
Hydrolyzed honey protein (* 24) 1.0
Malic acid (* 25) 0.2
Methylparaben 0.1
Purified water 67.6
Total (mass%) 100.0
* 18: Soypon SLE (trade name), manufactured by Kawaken Fine Chemical Co., Ltd. * 19: NIKKOL BO-20V (trade name), manufactured by Nikko Chemicals Co., Ltd. * 20: Emar 270J (trade name), manufactured by Kao Corporation * 21: Marcote 10 (trade name), manufactured by Nalco Japan Co., Ltd. * 22: Hyarobale (trade name), manufactured by Kewpie Co., Ltd. * 23: Diglycerin 801 (trade name), manufactured by Sakamoto Pharmaceutical Co., Ltd. * 24: Honeytain (trade name) ), Manufactured by Katakura Chikkarin Co., Ltd. * 25: Fuso-malate M (trade name), manufactured by Fuso Chemical Chemical Co., Ltd.

Formulation Example 4 Body Lotion <Flipable Gel Type>
16 g (40 mass%) of the following stock solution was filled in a transparent glass pressure vessel and an aluminum pressure vessel (both filled: 100 ml), and an aerosol valve was fixed. Then, 24 g (60% by mass) of liquefied gas (* 1) was filled from the aerosol valve, and further, an aerosol product was produced by filling carbon dioxide gas from the aerosol valve so that the equilibrium pressure was 0.6 MPa. Said evaluation was performed about the obtained aerosol product. Table 7 shows the evaluation results. In addition, what used the undiluted | stock solution which extracted powder from the following undiluted | stock solution was evaluated as a reference | standard product.

<Undiluted solution>
PEG-20 sorbitan cocoate (* 12) 0.5
Silica (* 4) 0.5
Hydroxyethyl cellulose (* 3) 0.5
Methylparaben 0.1
Cyclopentasiloxane (* 14) 5.0
Glycerin 3.0
l-Menthol 0.1
Hyaluronic acid 0.5
Ethanol 20.0
Purified water 69.8
Total (mass%) 100.0

Formulation 5 Hair Treatment <Floating Foam Type>
12 g (30% by mass) of the following stock solution was filled in a transparent glass pressure vessel and an aluminum pressure vessel (both filled: 100 ml), and an aerosol valve was fixed. Then, 28 g (70% by mass) of liquefied gas (* 1) was filled from the aerosol valve, and further, an aerosol product was produced by filling the carbon dioxide gas from the aerosol valve so that the equilibrium pressure was 0.6 MPa. Said evaluation was performed about the obtained aerosol product. Table 7 shows the evaluation results. In addition, what used the undiluted | stock solution which extracted powder from the following undiluted | stock solution was evaluated as a reference | standard product.

<Undiluted solution>
POE (20) cetyl ether (* 26) 2.0
POE hydrogenated castor oil (* 27) 2.0
Silica (* 4) 0.5
Methylparaben 0.1
Dineopentanoic acid methylpentanediol (* 28) 3.0
Dimethicone (* 29) 1.0
Propylene glycol 3.0
Cetyltrimethylammonium chloride (* 30) 0.5
l-Menthol 0.1
Fragrance 0.1
Ethanol 10.0
Purified water 77.7
Total (mass%) 100.0
* 26: NIKKOL BC-20 (trade name), manufactured by Nikko Chemicals Co., Ltd. * 27: NIKKOL HCO-60 (trade name), manufactured by Nikko Chemicals Co., Ltd. * 28: Neosolute MP (trade name), manufactured by Nippon Seika Co., Ltd. * 29: SH 200 (trade name), manufactured by Toray Dow Corning Co., Ltd. * 30: Kachinar CTC-70ET (trade name), manufactured by Toho Chemical Industry Co., Ltd.

Formulation Example 6 Hair restorer <Floating foam type>
12 g (30% by mass) of the following stock solution was filled in a transparent glass pressure vessel and an aluminum pressure vessel (both filled: 100 ml), and an aerosol valve was fixed. And aerosol product was manufactured by filling 28g (70 mass%) of liquefied gas (* 1) from the aerosol valve | bulb. Said evaluation was performed about the obtained aerosol product. Table 7 shows the evaluation results. In addition, what used the undiluted | stock solution which extracted powder from the following undiluted | stock solution was evaluated as a reference | standard product.

<Undiluted solution>
POE (20) POP (8) Cetyl ether (* 2) 1.0
Silica (* 4) 0.5
Hydroxyethyl cellulose (* 3) 0.5
Methylparaben 0.1
Propylene glycol 2.0
Dipotassium glycyrrhizinate 0.5
l-Menthol 0.1
Assembly extract 0.1
Ginkgo biloba 0.1
Aloe extract 0.1
Minoxidil 1.0
Hyaluronic acid 0.1
Fragrance 0.1
Ethanol 20.0
Purified water 73.8
Total (mass%) 100.0

Formulation Example 7 Hair restorer <Floating foam type>
12 g (30% by mass) of the following stock solution was filled in a transparent glass pressure vessel and an aluminum pressure vessel (both filled: 100 ml), and an aerosol valve was fixed. Then, 22 g (55% by mass) of liquefied gas (* 1) was filled from the aerosol valve, and 6 g (15% by mass) of dimethyl ether was further filled to produce an aerosol product. Said evaluation was performed about the obtained aerosol product. Table 7 shows the evaluation results. In addition, what used the undiluted | stock solution which extracted powder from the following undiluted | stock solution was evaluated as a reference | standard product.

<Undiluted solution>
POE (20) POP (8) Cetyl ether (* 2) 0.5
Silica (* 4) 0.5
Hydroxyethyl cellulose (* 3) 0.5
Methylparaben 0.1
Propylene glycol 3.0
Dipotassium glycyrrhizinate 0.5
l-Menthol 0.1
Assembly extract 0.1
Sodium hyaluronate 0.1
Fragrance 0.1
Ethanol 20.0
Purified water 74.5
Total (mass%) 100.0

Formulation Example 8 Pest Repellent <Floating Foam Type>
12 g (30% by mass) of the following stock solution was filled in a transparent glass pressure vessel and an aluminum pressure vessel (both filled: 100 ml), and an aerosol valve was fixed. Then, 22 g (55% by mass) of liquefied gas (* 1) was filled from the aerosol valve, and 6 g (15% by mass) of dimethyl ether was further filled to produce an aerosol product. Said evaluation was performed about the obtained aerosol product. Table 7 shows the evaluation results. In addition, what used the undiluted | stock solution which extracted powder from the following undiluted | stock solution was evaluated as a reference | standard product.

<Undiluted solution>
POE (20) POP (8) Cetyl ether (* 2) 0.5
Silica (* 4) 0.5
Hydroxyethyl cellulose (* 3) 0.3
Dineopentanoic acid methylpentanediol (* 28) 3.0
N, N-dimethyltoluamide 5.0
Ethanol 10.0
Purified water 80.7
Total (mass%) 100.0

Formulation Example 9 Sunscreen Agent <Peeling Gel Type>
16 g (40% by mass) of the following stock solution was filled into a polyethylene terephthalate pressure vessel (full amount: 100 ml), and an aerosol valve was fixed. And aerosol product was manufactured by filling 24g (60 mass%) of liquefied gas (* 1) from the aerosol valve | bulb. Said evaluation was performed using the obtained aerosol product. Table 7 shows the evaluation results. In addition, what used the undiluted | stock solution which extracted powder from the following undiluted | stock solution was evaluated as a reference | standard product.

<Undiluted solution>
POE-20 sorbitan cocoate (* 12) 1.0
Silica (* 4) 3.0
Hydroxyethyl cellulose (* 3) 0.5
Methylparaben 0.1
Cyclopentasiloxane (* 31) 3.0
Ethylhexyl methoxycinnamate (* 32) 6.0
Diethylaminohydroxybenzoyl hexyl benzoate /
Ethylhexyl methoxycinnamate (* 33) 4.0
Fine particle titanium oxide (* 34) 2.0
Fine zinc oxide (* 35) 2.0
Cross-linked polymethyl methacrylate (* 36) 0.5
l-Menthol 0.1
Hyaluronic acid 0.1
Ethanol 20.0
Purified water 57.7
Total (parts by mass) 100.0
* 31: SH 245 (trade name), manufactured by Toray Dow Corning Co., Ltd. * 32: Pulsol MCX (trade name), manufactured by DSM Nutrition Japan Co., Ltd. * 33: Uvinul A plus B (trade name), manufactured by BASF Japan * 34: MT-100AQ (trade name), manufactured by Teika Corporation * 35: MZ-500HP (trade name), manufactured by Teika Corporation * 36: Techpolymer MBP-8 (trade name), manufactured by Sekisui Plastics Co., Ltd.

Formulation Example 10 Anti-inflammatory analgesic <Floating foam type>
16 g (40% by mass) of the following stock solution was filled into a polyethylene terephthalate pressure vessel (full amount: 100 ml), and an aerosol valve was fixed. And aerosol product was manufactured by filling 24g (60 mass%) of liquefied gas (* 1) from the aerosol valve | bulb. Said evaluation was performed using the obtained aerosol product. Table 7 shows the evaluation results. In addition, what used the undiluted | stock solution which extracted powder from the following undiluted | stock solution was evaluated as a reference | standard product.

<Undiluted solution>
POE-20 sorbitan cocoate (* 12) 1.0
POE hydrogenated castor oil (* 27) 1.0
POE (20) cetyl ether (* 20) 1.0
POE (2) Lauryl ether (* 37) 1.0
Silica (* 4) 1.0
Hydroxyethyl cellulose (* 3) 0.2
Methylparaben 0.1
l-Menthol 2.0
Methyl salicylate 4.0
Fragrance 0.1
Ethanol 15.0
Purified water 73.6
Total (parts by mass) 100.0
* 37: NIKKOL BL-2 (trade name), manufactured by Nikko Chemicals Co., Ltd.

Formulation Example 11 Coolant <Freeze Type>
15 g (30% by mass) of the following stock solution was filled in a transparent glass pressure vessel and an aluminum pressure vessel (both filled: 100 ml), and an aerosol valve was fixed. And 17.5 g (35 mass%) of liquefied gas (* 1) was filled from the aerosol valve | bulb, and also 17.5 g (35 mass%) of hydrofluoroolefin (* 38) was filled, and the aerosol product was manufactured. Said evaluation was performed about the obtained aerosol product. Table 7 shows the evaluation results. In addition, what used the undiluted | stock solution which extracted powder from the following undiluted | stock solution was evaluated as a reference | standard product.

<Undiluted solution>
POE (20) POP (8) Cetyl ether (* 2) 0.5
Hollow silica beads (* 4) 0.5
Hydroxyethyl cellulose (* 3) 0.1
Methylparaben 0.1
Ethanol 2.0
Purified water 96.8
Total (mass%) 100.0
* 38: trans-1,3,3,3-tetrafluoroprop-1-ene (HFO-1234Ze (e))

Claims (6)

Contains an aqueous stock solution containing surfactant and powder and liquefied gas,
An emulsified aerosol composition in which an aqueous stock solution and a liquefied gas are emulsified,
In the state where the aqueous stock solution and the liquefied gas are separated from the powder,
An emulsified aerosol composition present between an aqueous stock solution and a liquefied gas. The emulsified aerosol composition according to claim 1, wherein the powder has a true specific gravity of 0.10 to 0.80 g / ml. The emulsified aerosol composition according to claim 1 or 2, wherein the powder is hydrophilic and the true specific gravity is smaller than the specific gravity of the liquefied gas. The emulsified aerosol composition according to any one of claims 1 to 3, wherein the powder has a hollow structure. The emulsification type aerosol composition according to any one of claims 1 to 4, wherein the powder has a specific surface area of 0.1 to 70 m ² / g. The emulsified aerosol composition according to any one of claims 1 to 5, comprising 10 to 60% by mass of the aqueous stock solution and 40 to 90% by mass of the liquefied gas.