JP2023020462A - Aerosol composition - Google Patents

Abstract

To provide an aerosol composition that is easy to emulsify with highly blended liquefied gas and makes a louder popping sound at the time of ejection if the aerosol composition is one that forms a foam making a popping sound.SOLUTION: Provided is an aerosol composition in which an aqueous stock solution and a liquefied gas are emulsified, the aqueous stock solution comprising a water-soluble polymer, a surfactant, and at least one of an organic acid or a salt thereof, and the blending ratio of the aqueous stock solution and the liquefied gas being 60/40 to 15/85 (mass ratio).SELECTED DRAWING: None

Description

The present invention relates to aerosol compositions. More particularly, the present invention relates to aerosol compositions that are readily emulsified with a highly formulated liquefied gas, such that when the aerosol composition is intended to form a foam with a crackling sound, exhaled The present invention relates to an aerosol composition capable of producing a particularly loud breaking sound.

Conventionally, an aerosol composition has been developed that produces a popping sound when ejected and provides a comfortable feel due to popping bubbles (for example, Patent Document 1). On the other hand, an aerosol composition in which an aqueous stock solution and a liquefied gas are emulsified has been developed (for example, Patent Document 2).

JP 2009-173613 A Japanese Patent Application Laid-Open No. 2020-40938

In the invention described in Patent Document 1, by adding an oil-based base material having a specific IOB value, a loud breaking sound can be obtained upon ejection. However, in the invention described in Patent Document 1, it is difficult to emulsify the stock solution and the liquefied gas in the production process, and the production takes a long time. In contrast, the invention described in Patent Document 2 makes it easier to emulsify the stock solution and the liquefied gas by blending cellulose nanofibers. However, the invention described in Patent Document 2 has a small foam breaking sound when ejected, and there is room for improvement.

The present invention has been made in view of such conventional problems, and it is easy to emulsify with a highly blended liquefied gas, and furthermore, the aerosol composition forms a foam that produces a crackling sound. If so, it is an object of the present invention to provide an aerosol composition that produces a louder popping sound when ejected.

The present invention for solving the above problems mainly includes the following configurations.

(1) An aerosol composition in which an aqueous stock solution and a liquefied gas are emulsified, and the aqueous stock solution contains a water-soluble polymer, a surfactant, and at least one of an organic acid and a salt thereof. , The aerosol composition, wherein the blending ratio of the aqueous stock solution and the liquefied gas is 60/40 to 15/85 (mass ratio).

According to such a configuration, the aqueous stock solution containing the water-soluble polymer and the surfactant further contains at least one of organic acid and salt thereof. This makes the aerosol composition easier to emulsify with an aqueous stock solution and a highly formulated liquefied gas. Further, when the aerosol composition forms a foam that generates a crackling sound, the ejected product produces a louder sound.

(2) The aerosol composition according to (1), wherein the aqueous concentrate comprises an organic acid and its salt.

According to such a configuration, the aqueous stock solution containing water-soluble polymer and surfactant further contains organic acid and its salt. This makes the aerosol composition easier to emulsify between the aqueous stock solution and the highly formulated liquefied gas. Further, when the aerosol composition forms a foam that generates a crackling sound, the ejected product produces a louder sound.

(3) The aerosol composition according to (1) or (2), wherein the content of the organic acid or its salt is 0.005 to 0.5% by mass in the aqueous stock solution.

According to such a constitution, the content of the organic acid or its salt is 0.005 to 0.5% by mass in the aqueous stock solution. This makes the aerosol composition easier to emulsify between the aqueous stock solution and the highly formulated liquefied gas. Further, when the aerosol composition forms a foam that generates a crackling sound, the ejected product produces a louder sound.

According to the present invention, it is easy to emulsify with a highly blended liquefied gas, and when the aerosol composition is to form a foam that produces a crackling sound, the foam breakage is larger when discharged. An audible aerosol composition can be provided.

<Aerosol composition>
The aerosol composition of one embodiment of the present invention is an aerosol composition in which an aqueous stock solution and a liquefied gas are emulsified. The aqueous concentrate contains a water-soluble polymer, a surfactant, and at least one of an organic acid and its salt. The blending ratio of the aqueous undiluted solution and the liquefied gas is 60/40 to 15/85 (mass ratio). This facilitates emulsification of the aerosol composition of the present embodiment with a highly-blended liquefied gas. Furthermore, when the aerosol composition forms a foam that produces a popping sound, the aerosol composition produces a loud breaking sound when discharged. Each of these will be described below. It should be noted that the aerosol composition of the present embodiment may also include a composition that does not form bubbles for breaking, depending on the form of the discharge. Examples of such an embodiment include a sherbet spray that sprays an aerosol composition in the form of a mist and freezes the discharge on an object, and a soap bubble spray that sprays a large number of independent soap bubble-like bubbles. Since the bubble does not break originally, the effect of increasing the sound of breaking the bubble may not be obtained.

(Aqueous undiluted solution)
The aqueous concentrate contains a water-soluble polymer, a surfactant, and at least one of an organic acid and its salt.

・Water-soluble polymer Water-soluble polymer retains liquefied gas for a long time by imparting viscosity to the ejected material, and when the ejected material is sheared and the foam breaks, it emits a loud crackling sound. It is used for purposes such as obtaining a comfortable feel by popping bubbles.

The water-soluble polymer is not particularly limited. For example, water-soluble polymers include cellulose nanofibers, cellulose-based polymers such as hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, sodium carboxymethylcellulose, xanthan gum, carrageenan, gum arabic, tragacanth gum, cationized Gum substances such as guar gum, guar gum and gellan gum, dextran, sodium carboxymethyldextran, dextrin, pectin, sodium alginate, sodium hyaluronate, polyvinyl alcohol, carboxyvinyl polymer and the like.

The content of the water-soluble polymer is not particularly limited. For example, the content of the water-soluble polymer is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, in the aqueous stock solution. Moreover, the content of the water-soluble polymer is preferably 2% by mass or less, more preferably 1% by mass or less, in the aqueous stock solution. When the content of the water-soluble polymer is within the above range, the aerosol composition is likely to produce a loud breaking sound and a comfortable feel due to popping of bubbles.

・Surfactant Surfactant emulsifies the aqueous stock solution and liquefied gas in the aerosol container, and when the aerosol composition is discharged to the outside, the liquefied gas vaporizes to slowly foam the discharge, and the foam breaks. It is used for purposes such as emitting crackling and breaking sounds. Further, when the aerosol composition is a sherbet spray, the surfactant is used for the purpose of efficiently imparting the heat of vaporization of the liquefied gas to the concentrate to freeze the discharge.

Surfactants are not particularly limited. To give an example, surfactants include polyoxyethylene polyoxypropylene alkyl ethers such as POE-POP cetyl ether, POE-POP decyltetradecyl ether, monococonut fatty acid POE sorbitan, POE sorbitan monostearate, monoolein. Polyoxyethylene sorbitan fatty acid esters such as acid POE sorbitan, polyoxyethylene glycerin fatty acid esters such as POE glyceryl monostearate, polyoxyethylene hydrogenated castor oils such as POE hydrogenated castor oil, POE cetyl ether, POE stearyl ether, POE oleyl ether , POE lauryl ether, POE behenyl ether, POE octyldodecyl ether, POE isocetyl ether, POE isostearyl ether and other polyoxyethylene alkyl ethers, polyethylene glycol fatty acid esters such as polyethylene glycol monostearate, hexaglyceryl monolaurate, monomyristine hexaglyceryl monolaurate, pentaglyceryl monolaurate, pentaglyceryl monomyristate, pentaglyceryl monooleate, pentaglyceryl monostearate, decaglyceryl monolaurate, decaglyceryl monomyristate, decaglyceryl monostearate, decaglyceryl monoisostearate, mono Polyglycerol fatty acid esters such as decaglyceryl oleate and decaglyceryl monolinoleate, polyoxyethylene glycerol fatty acid esters such as POE glyceryl monooleate, POE sorbitan coconut oil fatty acid, POE sorbitan monostearate, POE sorbitan monoisostearate, mono POE sorbitan oleate and other polyoxyethylene sorbitan fatty acid esters, POE sorbit monolaurate, POE sorbit tetrastearate, POE sorbit tetraoleate, and other polyoxyethylene sorbit fatty acid esters, coconut oil fatty acid diethanolamide, coconut oil fatty acid monoethanolamide , nonionic surfactants such as fatty acid alkanolamides such as lauric acid diethanolamide and lauric acid monoisopropanolamide; saponified products of fatty acids such as myristic acid and stearic acid and alkalis such as triethanolamine and potassium, potassium lauryl phosphate , alkyl phosphates such as sodium lauryl phosphate, polyoxyethylene Anionic surfactants such as alkyl ether phosphates, alkyl sulfates, polyoxyethylene alkyl ether sulfates, alkyl ether carboxylates, sulfonates; N-acyl glutamates, N-acyl glycinates, N-acyls Amino acid type anionic surfactants such as alanine salts and acyl alanine salts; polyoxyethylene/methylpolysiloxane copolymers, polyoxypropylene/methylpolysiloxane copolymers, poly(oxyethylene/oxypropylene)/methylpolysiloxanes silicone-based surfactants such as copolymers; amphoteric surfactants such as betaine lauryldimethylaminoacetate (laurylbetaine), stearylbetaine, betaine coconut oil fatty acid amidopropyldimethylaminoacetate (cocamidopropylbetaine), and the like.

The content of the surfactant is not particularly limited. For example, the surfactant content in the aqueous stock solution is preferably 0.1% by mass or more, more preferably 0.3% by mass or more. Moreover, the content of the surfactant is preferably 15% by mass or less, more preferably 10% by mass or less, in the aqueous stock solution. When the content of the surfactant is within the above range, the aerosol composition easily emulsifies the aqueous stock solution and the liquefied gas, and easily generates a loud popping sound.

- Organic acid or its salt The organic acid or its salt is used for the purpose of easily emulsifying the aqueous stock solution and the liquefied gas and increasing the breaking noise.

Organic acids are not particularly limited. By way of example, organic acids are lactic acid, citric acid, malic acid, gluconic acid, fumaric acid, and the like. By blending the organic acid into the aqueous stock solution, the aerosol composition particularly tends to easily emulsify the aqueous stock solution and the liquefied gas.

Organic acid salts include calcium lactate, sodium lactate, calcium citrate, sodium citrate, sodium malate, potassium gluconate and the like. When the organic acid salt is blended in the aqueous stock solution, the aerosol composition tends to produce a particularly loud bursting noise in the ejected product.

The aerosol composition of this embodiment preferably contains both an organic acid and a salt thereof. As a result, the aerosol composition facilitates emulsification of the aqueous stock solution and the highly-blended liquefied gas, and produces a louder foam-breaking sound in the ejected product.

The content of the organic acid or its salt (the total content when both are included) is not particularly limited. For example, the content of the organic acid or its salt is preferably 0.005% by mass or more, more preferably 0.01% by mass or more, in the aqueous stock solution. In addition, the content of the organic acid or its salt is preferably 0.5% by mass or less, more preferably 0.2% by mass or less, and 0.1% by mass or less in the aqueous stock solution. is more preferred. When the content of the organic acid or its salt is within the above range, the aerosol composition easily emulsifies the aqueous stock solution and the liquefied gas, and even if the aqueous stock solution and the liquefied gas are separated after standing for a long period of time. , the consumer is susceptible to re-emulsification by dropping the aerosol product. Further, when the aerosol composition forms a foam that generates a crackling sound, the ejected product produces a louder sound.

- Water The aqueous stock solution contains water. Water is the main solvent of the aqueous concentrate, contains water-soluble polymers, surfactants, organic acids or salts thereof, and emulsifies with liquefied gas.

Water is not particularly limited. Examples of water include purified water, ion-exchanged water, physiological saline, and deep sea water.

The content of water is not particularly limited. For example, water is preferably 50% by mass or more, more preferably 60% by mass or more, in the aqueous stock solution. In addition, the content of water in the aqueous stock solution is preferably 98% by mass or less, more preferably 95% by mass or less. When the water content is within the above range, the aqueous stock solution and the liquefied gas are easily emulsified, and the discharged material is likely to produce a loud breaking sound. Further, when the aerosol composition is a sherbet spray, the discharge is easily frozen.

- Optional Components The aqueous stock solution may contain optional components such as active ingredients, alcohols, oils, powders, etc., in addition to the water-soluble polymers, surfactants, organic acids or salts thereof, and water described above.

Active ingredients include cooling agents such as l-menthol and camphor, antiperspirants such as chlorohydroxyaluminum and isopropylmethylphenol, astringents such as zinc oxide, allantoin hydroxyaluminum and citric acid, allantoin, glycyrrhetinic acid, dipotassium glycyrrhizinate, Anti-inflammatory agents such as azulene, antipruritic agents such as crotamiton and d-camphor, anti-inflammatory analgesics such as methyl salicylate, indomethacin, piroxicam, felbinac and ketoprofen, oxiconazole, clotrimazole, sulconazole, bifonazole, miconazole, isoconazole, econazole , antifungal agents such as tioconazole, butenafine and their salts such as hydrochlorides, nitrates, acetates, local anesthetics such as dibucaine hydrochloride, tetracaine hydrochloride, lidocaine, lidocaine hydrochloride, diphenhydramine, diphenhydramine hydrochloride, chlorpheniramine maleate Antihistamines such as paraoxybenzoic acid esters, sodium benzoate, phenoxyethanol, benzalkonium chloride, benzethonium chloride, chlorhexidine chloride and other disinfectants, collagen, xylitol, sorbitol, hyaluronic acid, caroninic acid, sodium lactate, dl-pyrrolidone Moisturizers such as carboxylates, keratin, lecithin, and urea; deodorants such as lauric acid methacrylate, methyl benzoate, methyl phenylacetate, geranyl chlorate, acetophenone myristate, benzyl acetate, and benzyl propionate; Pest repellents such as diethyl-m-toluamide (deet), caprylic acid diethylamide, hexyl diethylaminohydroxybenzoylbenzoate, 2-ethylhexyl paramethoxycinnamate, ethylhexyl triazone, oxybenzone, hydroxybenzophenone sulfonic acid, sodium dihydroxybenzophenone sulfonate , UV absorbers such as dihydroxybenzophenone, UV scattering agents such as zinc oxide and titanium oxide, retinol, retinol acetate, retinol palmitate, calcium pantothenate, ascorbic acid, sodium ascorbate, dl-α-tocopherol, tocopherol acetate, tocopherol Vitamins such as and mixtures thereof, antioxidants such as ascorbic acid, α-tocopherol, dibutylhydroxytoluene, peony extract, loofah extract, rose extract, lemon extract, aloe extract , calamus root extract, eucalyptus extract, sage extract, tea extract, seaweed extract, placenta extract, extracts such as silk extract, whitening agents such as arbutin and kojic acid, and various fragrances such as natural fragrances and synthetic fragrances.

When an active ingredient is blended, the content of the active ingredient (excluding citric acid as the astringent mentioned above) is not particularly limited. For example, the content of the active ingredient in the aqueous stock solution is preferably 0.01% by mass or more, more preferably 0.1% by mass or more. In addition, the content of the active ingredient is preferably 15% by mass or less, more preferably 10% by mass or less, in the aqueous stock solution. When the content of the active ingredient is within the above range, the aerosol composition can produce a loud bursting sound from the ejected product without impeding the emulsification of the aqueous stock solution and the liquefied gas, and can contain the active ingredient. It is easy to obtain the effect of

When citric acid is contained as an astringent, the content of citric acid in the aqueous stock solution is preferably 0.6% by mass or more, more preferably 1% by mass or more. In addition, the content of citric acid is preferably 10% by mass or less, more preferably 8% by mass or less, in the aqueous stock solution. When the content of citric acid is within the above range, the aerosol composition can easily obtain an astringent effect. As described above, the content of citric acid as a conventional active ingredient (astringent) has the effect of improving the emulsifying effect of the aqueous stock solution and liquefied gas in the present embodiment, and increasing the frothing sound of the discharge. It is higher than the content of citric acid when blended as an organic acid to improve

Alcohols are preferably blended as solvents for dissolving active ingredients, surfactants, and the like that are difficult to dissolve in water, and for the purpose of adjusting the dryness and feeling of use when the discharge is applied.

Alcohols are not particularly limited. For example, alcohols include monohydric alcohols having 2 to 3 carbon atoms such as ethanol and isopropanol; Trivalent polyol and the like.

When alcohols are blended, the content of alcohols is not particularly limited. For example, the alcohol content in the aqueous stock solution is preferably 0.1% by mass or more, more preferably 1% by mass or more. Also, the alcohol content in the aqueous stock solution is preferably 30% by mass or less, more preferably 25% by mass or less. When the content of the alcohol is within the above range, the aerosol composition does not hinder the emulsification of the aqueous stock solution and the liquefied gas, and produces a loud bursting sound from the ejected matter. It is easy to obtain the effect of

The oil is preferably blended for the purpose of imparting luster and moisture to the skin and hair and suppressing dryness.

The oil content is not particularly limited. By way of example, the oil may be dimethicone, methylpolysiloxane, cyclopentasiloxane, cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, methylcyclopolysiloxane, tetrahydrotetramethylcyclotetrasiloxane. Silicone oils such as siloxane, octamethyltrisiloxane, decamethyltetrasiloxane, methylhydrogenpolysiloxane, and methylphenylpolysiloxane; hydrocarbon oils such as decane, dodecane, tetradecane, hexadecane, octadecane, liquid paraffin, isoparaffin, squalane, and squalene; , methylpentanediol dineopentanoate, diethylpentanediol dineopentanoate, neopentyl glycol di-2-ethylhexanoate, neopentyl glycol dicaprate, propylene glycol dilaurate, ethylene glycol distearate, diethylene glycol dilaurate, diethylene glycol distearate, diisostearin diethylene glycol dioleate, diethylene glycol dioleate, triethylene glycol dilaurate, triethylene glycol distearate, triethylene glycol diisostearate, triethylene glycol dioleate, propylene glycol monostearate, propylene glycol monooleate, ethylene glycol monostearate, triethylene glycol monostearate Glyceryl 2-ethylhexanoate, caprylic-capric triglycerol, isononyl isononanoate, isotridecyl isononanoate, diethoxyethyl succinate, diisostearyl malate, isopropyl myristate, isopropyl palmitate, cetyl isooctanoate, hydroxy Ester oils such as octyl stearate and ethylhexyl hydroxystearate; 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, oleyl alcohol and higher alcohols such as isostearyl alcohol.

When oil is blended, the content of oil is not particularly limited. For example, the oil content in the aqueous stock solution is preferably 0.1% by mass or more, more preferably 0.3% by mass or more. In addition, the oil content is preferably 15% by mass or less, more preferably 10% by mass or less, in the aqueous stock solution. When the oil content is within the above range, the aerosol composition does not impede the emulsification of the aqueous stock solution and the liquefied gas, and produces a loud bursting sound from the ejected matter. easy to obtain.

The powder is preferably blended as an emulsifying aid for facilitating emulsification of the aqueous stock solution and the liquefied gas, or for the purpose of obtaining a smooth feeling.

Powder is not particularly limited. By way of example, powders are talc, silica, zeolite, kaolin, mica, magnesium carbonate, calcium carbonate, zinc silicate, magnesium silicate, aluminum silicate, calcium silicate, and the like.

When powder is blended, the content of powder is not particularly limited. As an example, the powder content in the aqueous stock solution is preferably 0.01% by mass or more, more preferably 0.05% by mass or more. Also, the content of the powder is preferably 10% by mass or less, more preferably 5% by mass or less, in the aqueous stock solution. When the content of the powder is within the above range, the aerosol composition does not caking at the bottom of the container, and the effect of blending the powder is likely to be obtained.

The method for preparing the aqueous stock solution is not particularly limited. The aqueous stock solution can be prepared by a conventionally known method. For example, an aqueous stock solution can be prepared by adding a water-soluble polymer, a surfactant, an organic acid or its salt, an active ingredient, etc. to water and mixing.

The content of the aqueous stock solution may be 15% by mass or more, preferably 20% by mass or more, in the aerosol composition. Moreover, the content of the aqueous stock solution may be 60% by mass or less, preferably 55% by mass or less, in the aerosol composition. When the content of the aqueous stock solution is within the above range, the aerosol composition easily emulsifies the aqueous stock solution and the liquefied gas, and easily produces a loud breaking sound from the discharge. Further, when the aerosol composition is a sherbet spray, the discharge is easily frozen by the heat of vaporization of the liquefied gas, and an excellent cooling effect can be obtained.

(liquefied gas)
A liquefied gas is a liquid that has a vapor pressure in the aerosol container and emulsifies with the aqueous stock solution to form an emulsion. When the liquefied gas is discharged to the outside, it evaporates, cools the discharged substance, and foams it. Further, when the aerosol composition is a sherbet spray, the discharge is easily frozen by the heat of vaporization, and an excellent cooling effect can be obtained.

Liquefied gas is not particularly limited. By way of example, liquefied gases include propane, normal butane, isobutane and mixtures thereof; liquefied petroleum gas; dimethyl ether; hydrofluoroolefins such as trans-1,3,3,3-tetrafluoropropene, and mixtures thereof; etc.

The content of the liquefied gas in the aerosol composition may be 40% by mass or more, preferably 45% by mass or more. Moreover, the content of the liquefied gas in the aerosol composition may be 85% by mass or less, preferably 80% by mass or less. When the content of the liquefied gas is within the above range, the aerosol composition can easily emulsify the aqueous stock solution and the liquefied gas, easily produce a loud bursting sound from the ejected product, and provide a comfortable feel due to popping of the bubbles. easy to obtain. Further, when the aerosol composition is a sherbet spray, the discharge is easily frozen, and an excellent cooling effect is likely to be obtained.

That is, in the aerosol composition of the present embodiment, the blending ratio of the aqueous stock solution and the liquefied gas may be 60/40 to 15/85 (mass ratio), preferably 55/45 to 20/80. .

The method for preparing the aerosol composition is not particularly limited. To give an example, an aerosol composition is produced by filling a pressure container with an aqueous concentrate, sealing the aerosol container by fixing an aerosol valve to the pressure container, then filling the valve with a liquefied gas, and then filling the aqueous concentrate in the aerosol container. can be prepared by emulsifying a liquefied gas with The liquefied gas can also be filled into the pressure container before the aerosol valve is fixed.

The pressure-resistant container is a container filled with the aerosol composition and has a cylindrical shape with a bottom. A valve is attached to the opening of the container body.

The material of the pressure-resistant container is not particularly limited. For example, the material of the pressure vessel is aluminum, metal such as tin, various synthetic resins, pressure glass, and the like.

The valve is a member for closing and sealing the opening of the pressure vessel. Further, the valve includes a housing held by a mounting cup attached to the opening of the pressure vessel, a stem having a stem hole communicating between the inside and outside of the pressure vessel, and a stem hole mounted around the stem hole. Mainly includes a stem rubber for closing. The housing contains a stem, a stem rubber, and a spring that biases the stem upward. A spray member is attached to the upper end of the stem for spraying the aerosol composition.

The injection member is a member for opening and closing the valve to inject the aerosol composition, and is attached to the upper end of the stem. The injection member mainly includes a nozzle portion in which injection holes are formed and an operation portion operated by a user's finger or the like. The aerosol composition is injected from the injection holes. The number and shape of injection holes are not particularly limited. A plurality of injection holes may be provided. Also, the shape of the injection hole may be substantially circular, substantially rectangular, or the like.

In the aerosol product of this embodiment, when the injection member is pushed down, the stem of the valve is pushed downward. As a result, the stem rubber bends downward to open the stem hole. As a result, the inside of the pressure vessel communicates with the outside. When the inside of the pressure vessel communicates with the outside, the aerosol composition is taken into the housing by the pressure difference between the pressure inside the pressure vessel and the outside, then passes through the stem hole and the passage in the stem, and is sent to the injection member. , and then injected from the injection hole. The expelled aerosol composition expands on the target surface (such as the arm) to form a foam.

The ejected matter is subjected to shearing or the like to break the bubbles, and emits a loud popping sound. At this time, the ejected matter can impart a comfortable feel to the ejection surface such as the skin due to bursting bubbles.

The aqueous stock solution and the liquefied gas can be emulsified by shaking an aerosol container filled with the aerosol composition with a shaker or the like.

The aerosol composition of the present embodiment is easily re-emulsified by shaking several times before the consumer sprays it, even if the aerosol composition of the present embodiment is left standing for a long period of time at home or at home. Therefore, the aerosol composition can be jetted with a uniform composition, and a jet with stable performance can be easily obtained.

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. The present invention is by no means limited to these examples.

(Example 1)
Aqueous stock solution A was prepared according to the recipe shown in Table 1 below. 24 g (40% by mass) of this aqueous stock solution A was filled in an aluminum pressure-resistant container, and a valve was fixed to the mouth of the pressure-resistant container. 36 g (60% by mass) of liquefied petroleum gas was charged through the valve, and the aqueous stock solution and liquefied petroleum gas were emulsified to prepare an aerosol composition.

(Example 2)
An aerosol composition was prepared in the same manner as in Example 1, except that the aqueous concentrate B shown in Table 1 was used instead of the aqueous concentrate A.

(Example 3)
An aerosol composition was prepared in the same manner as in Example 1, except that the aqueous concentrate C shown in Table 1 was used instead of the aqueous concentrate A.

(Example 4)
An aerosol composition was prepared in the same manner as in Example 1, except that the aqueous concentrate D shown in Table 1 was used instead of the aqueous concentrate A.

(Example 5)
An aerosol composition was prepared in the same manner as in Example 1, except that the aqueous concentrate E shown in Table 1 was used instead of the aqueous concentrate A.

(Example 6)
An aerosol composition was prepared in the same manner as in Example 1, except that the aqueous concentrate F shown in Table 1 was used instead of the aqueous concentrate A.

(Comparative example 1)
An aerosol composition was prepared in the same manner as in Example 1, except that the aqueous concentrate G shown in Table 1 was used instead of the aqueous concentrate A.

The aerosol compositions obtained in Examples 1 to 6 and Comparative Example 1 were evaluated for initial emulsification and foam break sound by the following evaluation methods. Table 2 shows the results.

1. Initial emulsification After the liquefied gas was filled from the valve, the aerosol container was shaken up and down by 30 cm, and the number of reciprocations until emulsification was counted, and the initial emulsification was evaluated according to the following evaluation criteria.
(Evaluation criteria)
A: The number of times until emulsification was 10 times or less.
○: The number of times until emulsification was 11 to 15 times.
x: The number of times until emulsification was 16 times or more.

2. Broken sound The aerosol container was immersed in a constant temperature water bath adjusted to 25°C for 30 minutes to adjust the temperature of the aerosol composition to 25°C. The aerosol composition was discharged onto the palms of the hands, and the foam breaking sound when the palms were rubbed together was evaluated according to the following evaluation criteria.
(Evaluation criteria)
⊚: Broken sound was louder than Comparative Example 1 and was very loud.
◯: The break sound was slightly louder than that of Comparative Example 1, and was a large break sound.
x: Broken sound was smaller than in Comparative Example 1.

As shown in Table 2, in the aerosol compositions of Examples 1 to 6 of the present invention, although the liquefied gas was highly blended, the aqueous stock solution and the liquefied gas were easily emulsified, and the obtained The foaming sound of the ejected product was loud.

(Example 7)
Aqueous stock solution H was prepared according to the recipe shown in Table 3 below. 15 g (30% by mass) of this aqueous stock solution H was filled in an aluminum pressure-resistant container, and a valve was fixed to the mouth of the pressure-resistant container. 35 g (70% by mass) of liquefied petroleum gas was filled through the valve, and the aqueous stock solution and liquefied petroleum gas were emulsified to prepare an aerosol composition (sorbet spray).

(Example 8)
Aqueous stock solution I was prepared according to the recipe shown in Table 3 below. 12.5 g (25% by mass) of this aqueous stock solution H was filled in an aluminum pressure-resistant container, and a valve was fixed to the mouth of the pressure-resistant container. 37.5 g (75% by mass) of liquefied petroleum gas was charged through the valve, and the aqueous stock solution and liquefied petroleum gas were emulsified to prepare an aerosol composition (sherbet spray).

As shown in Table 4, although the aerosol compositions of Examples 7 and 8 of the present invention contained a large amount of liquefied gas, the aqueous concentrate and liquefied gas were easily emulsified. When the aerosol compositions of Examples 7 and 8 were sprayed onto a hand towel, the discharged material was frozen and an excellent cooling effect was obtained.

Claims (3)

An aerosol composition in which an aqueous stock solution and a liquefied gas are emulsified,
The aqueous stock solution contains a water-soluble polymer, a surfactant, and at least one of an organic acid or a salt thereof,
The aerosol composition, wherein the blending ratio of the aqueous undiluted solution and the liquefied gas is 60/40 to 15/85 (mass ratio). 2. The aerosol composition of claim 1, wherein said aqueous concentrate comprises organic acids and salts thereof. 3. The aerosol composition according to claim 1, wherein the content of said organic acid or its salt is 0.005 to 0.5% by mass in the aqueous concentrate.