Aerosol compositions and aerosol products

Abstract

To provide an aerosol composition that offers a good user experience with excellent cooling and cracking sensations, exhibits high cleansing power, and demonstrates high stability.SOLUTION: An aerosol composition comprises: a stock solution composition comprising water, a thickener, silicone oil, and a surfactant; and dimethyl ether. The thickener comprises a (meth) acrylic acid polymer. The surfactant has an HLB value of 8.5-14.0. The content of the dimethyl ether is 8-35 pts.mass relative to 100 pts.mass of the stock solution composition.SELECTED DRAWING: None

Description

Technical Field

[0001] The present disclosure relates to aerosol compositions and aerosol products.

Background Art

[0002] Conventionally, various studies have been conducted on cracking agents that form a foam and then foam while making a cracking sound, providing a good feeling of use. For example, Patent Document 1 discloses an aerosol composition containing 1 to 30% by weight of a lower alcohol in an aqueous stock solution and 38% by weight or more of a liquefied gas having a boiling point of -5°C or lower. Further, Patent Document 2 discloses an aerosol composition containing 10 to 40% by mass of dimethyl ether (DME) in a gel thickened with a water-soluble polymer such as carboxyvinyl polymer.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, since Patent Document 1 contains a large amount of liquefied gas, it is too stimulating to be used on sensitive areas such as the face. Also, it has been found that due to the large amount of liquefied gas, the stability of the composition is likely to decrease. On the other hand, Patent Document 2 has a problem that the cracking property is not sufficient and it is difficult to blend a large amount of oil components, so a high cleansing power cannot be added. The present disclosure provides an aerosol composition that has a good feeling of use such as a good cooling feeling and a cracking feeling, has a high cleansing power, and further has high stability. [Means for solving the problem]

[0005] This disclosure relates to a stock composition containing water, a thickener, a silicone oil, and a surfactant, and It contains dimethyl ether, The thickening agent contains a (meth)acrylic acid-based polymer, The HLB value of the surfactant is 8.5 to 14.0. This invention relates to an aerosol composition in which the dimethyl ether content is 8 to 35 parts by mass per 100 parts by mass of the stock solution composition. [Effects of the Invention]

[0006] According to this disclosure, it is possible to provide an aerosol composition that offers a good user experience, such as a pleasant cooling and crackling sensation, has high cleansing power, and is also highly stable. [Modes for carrying out the invention]

[0007] When a numerical range is expressed as "XX or greater and YY or less" or "XX to YY," unless otherwise specified, it means a numerical range that includes the lower and upper limits. When a numerical range is expressed in steps, the upper and lower limits of each range can be combined in any way.

[0008] The aerosol composition contains the stock composition and dimethyl ether. The stock composition contains a thickening agent. The thickening agent contains a (meth)acrylic acid polymer. Examples of (meth)acrylic acid-based polymers include polymers (polymers) of monomers (or monomer mixtures) containing (meth)acrylic acid (preferably acrylic acid). (Meth)acrylic acid-based polymers have carboxyl groups derived from (meth)acrylic acid.

[0009] The (meth)acrylic acid polymer preferably contains at least one polymer selected from the group consisting of carboxyvinyl polymers and alkyl-modified carboxyvinyl polymers. Examples of alkyl-modified carboxyvinyl polymers include (acrylates / alkyl(C10-30)) crosspolymers. The (meth)acrylic acid polymer more preferably contains a carboxyvinyl polymer and an alkyl-modified carboxyvinyl polymer. The mass ratio of the carboxyvinyl polymer and the alkyl-modified carboxyvinyl polymer (carboxyvinyl polymer:alkyl-modified carboxyvinyl polymer) is preferably 1:2 to 2:1, more preferably 2:3 to 3:2, and even more preferably 4:5 to 5:4.

[0010] By using (meth)acrylic acid polymers as a thickening agent, a good cracking sensation can be obtained. The inventors believe this is because the viscosity of the aerosol composition can be increased by adding (meth)acrylic acid polymers. Compared to other thickening agents, (meth)acrylic acid polymers have a higher viscosity-increasing effect and can easily thicken the aerosol composition even in small amounts. Furthermore, by using a (meth)acrylic acid-based polymer as a thickening agent, high cleansing power can be obtained. The inventors believe this is because the (meth)acrylic acid-based polymer suppresses foaming of the aerosol composition and adheres closely to the surface to be coated.

[0011] In (meth)acrylic acid-based polymers, (meth)acrylic acid preferably accounts for 30% by mass or more, more preferably 40% by mass or more, and even more preferably 50% by mass or more of the constituent monomers. (Meth)acrylic acid polymers may be commercially available. Examples of carboxyvinyl polymers include Carbopol Ultrez 10 (Lubrisol). Examples of (acrylates / alkyl (C10-30) acrylate) crosspolymers include PEMULEN TR-1 and PEMULEN TR-2 (Lubrisol).

[0012] The proportion of the thickening agent is not particularly limited and can be appropriately selected considering the desired crackling sensation and the purpose of the aerosol composition. The content of the thickening agent in the stock solution composition is preferably 0.05 to 1.00% by mass, more preferably 0.10 to 0.80% by mass, and even more preferably 0.20 to 0.50% by mass. The content of (meth)acrylic acid-based polymer in the stock solution composition is preferably 0.05 to 1.00% by mass, more preferably 0.10 to 0.80% by mass, and even more preferably 0.20 to 0.50% by mass.

[0013] The thickener may contain, in addition to the (meth)acrylic acid polymer, other thickeners different from the (meth)acrylic acid polymer, to an extent that does not impair the above effects. Examples of other thickeners include the following: Cellulose-based thickeners such as cellulose gum, methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, hydrophobized hydroxypropylmethylcellulose, stearoxyhydroxypropylmethylcellulose, carboxymethylcellulose, cationized cellulose, sodium cellulose sulfate, and cellulose powder; Gum arabic, locust bean gum, tara gum, guar gum, glucomannan, xanthan gum Plant-derived thickeners such as cinnamon gum, pectin, and agar; Starches such as starch, carboxymethyl starch, and methylhydroxypropyl starch; Alginate-based polymers such as sodium alginate and propylene glycol alginate; Synthetic polymers such as polyacrylamide, polyethyleneimine, and high-polymer polyethylene glycol; Polymerized polymers such as highly polymerized polyethylene glycol (highly polymerized PEG, preferably with an average degree of polymerization of 2,000 to 150,000), (PEG-240 / decyltetradeceth-20 / HDI) copolymer, and polyurethane.

[0014] Among them, other thickeners are preferably cellulose-based thickeners, and cellulose derivatives such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, hydrophobized hydroxypropyl methyl cellulose, stearoxy hydroxypropyl methyl cellulose, carboxymethyl cellulose, cationized cellulose, and sodium cellulose sulfate are preferred. More preferably, it is hydroxyethyl cellulose.

[0015] The stock solution composition preferably contains other thickeners in an amount of 0.00 to 0.10% by mass, more preferably 0.00 to 0.05% by mass, and even more preferably 0.01 to 0.02% by mass.

[0016] The viscosity of the stock solution composition may be appropriately adjusted according to the desired cracking feeling and the like, and is not particularly limited. The viscosity of the stock solution composition is preferably 1000 to 50000 mPa·s, and more preferably 3000 to 10000 mPa·s. The viscosity can be adjusted to the above range by, for example, a thickener. The viscosity was measured by setting the liquid to be measured at 20°C, using a TVB-10 viscometer (TVB-10M: Toki Sangyo Co., Ltd.), and measuring the indicated value 1 minute after the start of measurement at 60 rpm with an M4 rotor as the measured value.

[0017] The stock solution composition contains silicone oil. By using silicone oil, a good cracking feeling can be obtained. The inventors believe that this is because silicone oil has an antifoaming effect. In addition, by using silicone oil, a high cleansing power can be obtained. The inventors believe that this is because silicone oil has good compatibility with makeup.

[0018] The silicone oil contains a siloxane structure and is not particularly limited as long as it is liquid at room temperature, and known ones can be used. Examples include straight silicone oils such as dimethyl silicone oil (dimethicone), methylphenyl silicone oil, and methylhydrogen silicone oil; modified silicone oils in which the side chains or terminals of dimethyl silicone oil are modified with carbinol groups, carboxyl groups, silanol groups, etc.; and cyclic siloxanes such as hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, and decamethylcyclopentasiloxane.

[0019] The silicone oil preferably contains at least one compound selected from the group consisting of straight silicone oil and cyclic siloxane. More preferably, the silicone oil contains at least one compound selected from the group consisting of dimethyl silicone oil and decamethylcyclopentasiloxane.

[0020] The content of silicone oil in the stock solution composition is preferably 5.00 to 40.00% by mass, more preferably 10.00 to 30.00% by mass, and even more preferably 15.00 to 25.00% by mass.

[0021] The stock solution composition may contain, in addition to silicone oil, other known oily components other than silicone oil. The other oily components are preferably liquid at room temperature. Examples of other oily components include mineral oil and hydrogenated farnesene. The stock solution composition preferably contains 1.00 to 20.00% by mass of other oily components, more preferably 2.00 to 15.00% by mass, and even more preferably 3.00 to 10.00% by mass.

[0022] The stock solution in an aerosol composition contains water. The proportion of water in the stock solution is not particularly limited and can be appropriately selected considering the purpose of the aerosol composition. The water content in the stock solution composition is preferably 30.00% to 70.00% by mass, more preferably 40.00% to 60.00% by mass, and even more preferably 45.00% to 55.00% by mass.

[0023] The undiluted composition contains a surfactant. The HLB value of the surfactant must be between 8.5 and 14.0. If the HLB value of the surfactant is less than 8.5, the stability of the stock solution composition cannot be obtained. Also, if the HLB value of the surfactant exceeds 14.0, the cracking sensation cannot be obtained. The inventors believe that this is because when the HLB value of the surfactant is high, the hydrophilic groups become larger, causing the surfactants to attract each other, forming stable foam and suppressing defoaming. The HLB value of the surfactant is preferably between 9.3 and 13.3, more preferably between 10.0 and 12.5, and even more preferably between 10.0 and 11.5. Regarding the HLB value of surfactants, if multiple surfactants are used, the weighted average value based on mass fraction shall be adopted.

[0024] The surfactant may be anionic, cationic, nonionic, or amphoteric, and one or more types may be used.

[0025] Examples of anionic surfactants include fatty acid soaps such as potassium coconut oil fatty acid (e.g., potassium cocoyl glutamate), potassium myristate, and potassium laurate; alkyl sulfates such as potassium lauryl sulfate, sodium lauryl sulfate, triethanolamine lauryl sulfate, and sodium myristyl sulfate; polyoxyethylene alkyl ether sulfates such as sodium polyoxyethylene lauryl ether sulfate and triethanolamine polyoxyethylene lauryl ether sulfate; alkyl phosphates such as lauryl phosphate; polyoxyethylene alkyl ether phosphates such as sodium polyoxyethylene oleyl ether phosphate and polyoxyethylene lauryl ether phosphate; amino acid-based surfactants such as acylmethyl taurate and sodium lauroyl methylalanine; and sulfonates such as sodium lauryl sulfoacetate.

[0026] Examples of cationic surfactants include alkylammonium salts such as cetyltrimethylammonium chloride, stearyltrimethylammonium chloride (steartrimonium chloride), behenyltrimethylammonium chloride, lauryltrimethylammonium chloride, and stearoxypropyltrimonium chloride; alkylbenzylammonium salts; stearylamine acetate; polyoxyethylene alkylamines such as polyoxyethylene laurylamine and polyoxyethylene stearylamine; stearamidopropyldimethylamine; and polyquaternium-10.

[0027] Nonionic surfactants include polyglycerin fatty acid esters such as pentagglyceryl monolaurate, pentagglyceryl monomyristate, pentagglyceryl monooleate, pentagglyceryl monostearate, hexaglyceryl monolaurate, hexaglyceryl monomyristate, decaglyceryl monolaurate, decaglyceryl monomyristate, decaglyceryl monooleate, decaglyceryl distearate, POE(20) sorbitan monolaurate, POE(20) sorbitan monopalmitate, and POE(20) sorbitan mono Polyoxyethylene sorbitan fatty acid esters such as stearate, POE(20) sorbitan monooleate, POE(20) sorbitan monoisostearate, polyethylene glycol fatty acid esters such as POE(25) monostearate, PEG-20 sorbitan cocoate, polyoxyethylene ethers such as POE(9) lauryl ether, POE(15) cetyl ether, POE(20) cetyl ether, POE(10) oleyl ether, POE(15) oleyl ether, POE(20) oleyl ether, POE(20) behenyl ether, etc. Polyoxyethylene polyoxypropylene alkyl ethers such as POE(20)POP(4) cetyl ether, polyoxyethylene sorbitol fatty acid esters such as POE(60) sorbitol tetrastearate, POE(60) sorbitol tetraoleate, POE(6) sorbitol monolaurate, polyoxyethylene glycerin fatty acid esters such as POE(15) glyceryl monostearate, POE(15) glyceryl monooleate, POE(40) castor oil, POE(20) hydrogenated castor oil, POE(40) hydrogenated Polyoxyethylene castor oil (PEG-40 hydrogenated castor oil), POE(50) hydrogenated castor oil, POE(60) castor oil, POE(60) hydrogenated castor oil, POE(80) hydrogenated castor oil, POE(100) hydrogenated castor oil, and other polyoxyethylene castor oils, polyoxyethylene lanolin alcohols such as POE(10) lanolin alcohol, POE(20) lanolin alcohol, POE(40) lanolin alcohol, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquistearate,Sorbitan fatty acid esters such as sorbitan monooleate, sorbitan sesquioleate, and sorbitan trioleate; glycerin fatty acid esters such as glyceryl monostearate and glyceryl monomyristate; diglycerin fatty acid esters such as diglyceryl monostearate, diglyceryl monooleate, and diglyceryl monoisostearate; triglycerin fatty acid esters such as triglyceryl monolaurate, triglyceryl monomyristate, triglyceryl monooleate, and triglyceryl monostearate; tetraglyceryl Tetraglycerin fatty acid esters such as monostearate and tetraglyceryl monooleate, pentagglycerin fatty acid esters such as pentagglyceryl trimillistate and pentagglyceryl trioleate, hexaglycerin fatty acid esters such as hexaglyceryl monooleate, hexaglyceryl monostearate, and hexaglyceryl tristearate, and decaglyceryl monostearate, decaglyceryl distearate, decaglyceryl diisostearate, decaglyceryl dioleate, decaglyceryl tristearate, decaglyc Decaglycerin fatty acid esters such as ceryl trioleate, polyglycerin fatty acid esters such as POE(5) glyceryl monostearate, polyoxyethylene glycerin fatty acid esters such as POE(20) sorbitan tristearate, POE(20) sorbitan trioleate, POE(6) sorbitan monostearate, POE(6) sorbitan monooleate, polyoxyethylene sorbitan fatty acid esters such as POE(6) sorbitan tetraoleate, POE(30) sorbitan tetraoleate, etc. Polyethylene glycol fatty acid esters such as rubit fatty acid ester, POE(10) monolaurate, POE(10) monostearate, POE(40) monostearate, POE(55) monostearate, POE(10) monooleate, POE(21) ​​lauryl ether, POE(2) cetyl ether, POE(10) cetyl ether, POE(25) cetyl ether, POE(20) stearyl ether, POE(7) oleyl ether, POE(50) oleyl ether, POE(10) behenyl ether, POE(20) behenyl ether,POE(30) Behe, Examples include polyoxyethylene alkyl ethers such as nyl ethers, polyoxyethylene polyoxypropylene alkyl ethers such as POE(20)POP(8) cetyl ether and POE(30)POP(6) decyltetradecyl ether, alkyl glucosides such as lauryl glucoside, fatty acid alkylolamides such as coconut oil fatty acid diethanolamide, and alkyldimethylamine oxide solutions such as lauryl dimethylamine oxide solution. Other examples include polyoxyethylene glycerin fatty acid esters such as polyoxyethylene glyceryl monooleate, polyoxyethylene glyceryl monomyristate, polyoxyethylene glyceryl monostearate, polyoxyethylene glyceryl monoisostearate, polyoxyethylene glyceryl diisostearate, and polyoxyethylene glyceryl triisostearate. The number of moles of ethylene oxide added is preferably 5 to 60, and more preferably 10 to 30. Preferably, examples include POE(40) hydrogenated castor oil (PEG-40 hydrogenated castor oil) and PEG-20 glyceryl triisostearate.

[0028] Examples of amphoteric surfactants include alkyl betaines such as lauryldimethylaminoacetic acid betaine (lauryl betaine), stearyl betaine, lauric acid amidopropyl betaine, lauryl hydroxysulfobetaine, stearyldimethylaminoacetic acid betaine, dodecylaminomethyldimethylsulfopropyl betaine, and octadecylaminomethyldimethylsulfopropyl betaine; betaine types such as cocamidopropyl betaine, cocamidopropyl fatty acid amidopropyl betaine, and cocamidopropyl hydroxysultaine; alkylimidazole types such as 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine; and amine oxide types such as lauryldimethylamine N-oxide, oleyldimethylamine N-oxide, and lauramine oxide.

[0029] The surfactant preferably includes at least one selected from the group consisting of nonionic surfactants, and more preferably at least one selected from the group consisting of polyoxyethylene hydrogenated castor oil and polyoxyethylene glycerin fatty acid esters. Furthermore, the surfactant preferably includes PEG-40 hydrogenated castor oil (HLB: 12.5). More preferably, the surfactant contains PEG-40 hydrogenated castor oil (HLB: 12.5) and PEG-20 glyceryl triisostearate (HLB: 8.0). In addition to nonionic surfactants, it is also preferable to use anionic surfactants such as polyoxyethylene alkyl ether phosphates.

[0030] The surfactant preferably contains two or more surfactants. In this case, the HLB values ​​should be adjusted so that the weighted average value of the two or more surfactants falls within the above range. The surfactant contains nonionic surfactant A, which is a nonionic surfactant with an HLB of preferably 11.0 to 15.0 (more preferably 12.0 to 14.0, and even more preferably 12.0 to 13.0), and nonionic surfactant B, which is a nonionic surfactant with an HLB of preferably 6.0 to 10.0 (more preferably 7.0 to 9.0, and even more preferably 7.5 to 8.5). The combination of multiple surfactants in this way can further improve the emulsification stability of the aerosol composition. Furthermore, it tends to produce a more desirable cracking sensation. This is thought to be because combining two specific surfactants with different HLB values ​​increases the surfactant density present in the oil-water interface film.

[0031] The HLB value is an index that represents the ratio of the relative affinity of a surfactant to both liquids in an oil-water system, and refers to the HLB value at 25°C according to Griffin's definition. In this disclosure, if a catalog value is available, the catalog value will be used as the HLB value.

[0032] The proportion of surfactant is not particularly limited and can be appropriately selected considering the purpose of the aerosol composition. It is sufficient that the amount of surfactant is sufficient to stabilize the aerosol composition in relation to water, thickeners, silicone oil and dimethyl ether, and other additives added as needed. The surfactant content in the stock solution composition is preferably 0.50% to 20.00% by mass, more preferably 1.00% to 15.00% by mass, even more preferably 1.50% to 12.00% by mass, and even more preferably 2.00% to 6.00% by mass.

[0033] When multiple surfactants are included, the content of nonionic surfactant A in the stock solution composition is preferably 0.50% to 10.00% by mass, more preferably 1.00% to 6.00% by mass, and even more preferably 1.50% to 3.00% by mass. The content of nonionic surfactant B is preferably 0.50% to 10.00% by mass, more preferably 1.00% to 6.00% by mass, and even more preferably 1.50% to 3.00% by mass.

[0034] The aerosol composition contains the stock solution composition and dimethyl ether (DME). The dimethyl ether can act as a propellant. Furthermore, the dimethyl ether can provide a good cooling sensation. Furthermore, the use of dimethyl ether improves the stability of the aerosol composition and allows for a good crackling sensation. The inventors believe this is due to its high compatibility with the stock solution composition.

[0035] The dimethyl ether content is 8 to 35 parts by mass per 100 parts by mass of the stock solution composition. A dimethyl ether content of 8 parts by mass or more provides a good feel and crackling sensation. If the dimethyl ether content exceeds 35 parts by mass, the cooling sensation becomes too strong, and the stability of the aerosol composition tends to decrease. The dimethyl ether content is preferably 10 to 31 parts by mass, more preferably 15 to 30 parts by mass, and even more preferably 18 to 27 parts by mass, per 100 parts by mass of the stock solution composition.

[0036] The aerosol composition may further contain other propellants besides dimethyl ether, provided that it contains dimethyl ether within the above range. Other propellants are not particularly limited, and known propellants that can be used in aerosol products may be used. Liquefied gases or compressed gases may be used.

[0037] Examples of liquefied gases include hydrocarbons such as propane, butane, or liquefied petroleum gas (LPG) and LNG containing these, and organic fluorine compounds such as hydrofluoroolefins. The compressed gas is preferably carbon dioxide, nitrogen gas, nitrous oxide gas, argon, helium, or compressed air.

[0038] The proportion of other propellants is preferably 0.1 to 3 parts by mass, more preferably 0.2 to 2 parts by mass, and even more preferably 0.5 to 1 part by mass, per 100 parts by mass of the stock solution composition.

[0039] The stock solution composition may contain polyols (polyhydric alcohols). The inventors believe that polyols have good affinity with makeup, thus improving cleansing power. The polyol is not particularly limited and can be used for the desired crackling sensation and the purpose of the aerosol composition. These can be selected as appropriate, taking these factors into consideration. Examples of polyols include the following:

[0040] Diols such as propylene glycol (PG), dipropylene glycol (DPG), and 1,3-butylene glycol; trivalent or higher alcohols such as glycerin. The polyol preferably comprises at least one selected from the group consisting of glycerin, dipropylene glycol, and 1,3-butylene glycol. From the viewpoint of good cracking characteristics, it is preferable to include at least one selected from the group consisting of diols, and it is even more preferable to include at least one selected from the group consisting of dipropylene glycol and 1,3-butylene glycol.

[0041] The polyol content in the stock solution composition is not particularly limited, but is preferably 0.0 to 40.0% by mass, more preferably 5.0 to 30.0% by mass, and even more preferably 15.0 to 25.0% by mass.

[0042] The undiluted composition may contain optional ingredients such as active ingredients, fragrances, antioxidants, preservatives, pH adjusters, chelating agents, oils and fats, silicones, thickeners, humectants, disinfectants, skin protectants, vitamins, various extracts, deodorizers / odor inhibitors, cooling agents, UV absorbers, UV scatterers, insect repellents, insecticides, and others, to an extent that does not impair the above-mentioned effects. The proportion of optional ingredients will be determined appropriately based on the intended use of the composition.

[0043] Optional components include, for example, the following: Cooling agents (menthol, camphor, etc.); oily components (e.g., hydrocarbon compounds, oils and fats); pH adjusters (e.g., citric acid, sodium citrate, lactic acid, triethanolamine, KOH, NaOH, etc.); rust inhibitors (e.g., aqueous ammonia, ammonium benzoate, sodium nitrite, etc.); preservatives (e.g., parabens, phenoxyethanol, methyl parahydroxybenzoate); urea; minerals such as calcium, iron, and sodium; pigments; dyes; chelating agents such as EDTA-2Na, etc.

[0044] Next, we will discuss aerosol products. Aerosol products are A container filled with an aerosol composition, and The container is equipped with a dispensing mechanism for dispensing the aerosol composition. The discharge mechanism and container are not particularly limited and known ones can be used. The container only needs to be able to withstand the pressure of the propellant, and known containers made of resin, metal, glass, etc. can be used. The discharge mechanism is also not particularly limited and known ones can be used. The discharge mechanism includes, for example, a valve device and an actuator. Furthermore, the structure for mounting the valve device can be appropriately selected depending on the type of pressure vessel. The actuator in the discharge mechanism is not particularly limited and any known actuator may be used. For example, the shape of the spout may be used.

[0045] There are no particular restrictions on the pressure (gauge pressure) inside the container of an aerosol product. Dimethyl ether and, if necessary, other propellants should be filled into the aerosol container such that the pressure (gauge pressure) inside the container when filled is, for example, 1 MPa or less at 25°C.

[0046] The method for producing the stock solution composition, aerosol composition, and aerosol product is not particularly limited. For example, the following method can be used. The stock solution composition in the aerosol composition can be obtained by mixing water, a thickener, a silicone oil, and a surfactant, and other components such as polyols as needed, in any proportion. The aerosol composition preferably forms an emulsion. The aerosol composition may be an oil-in-water (O / W) emulsion in which an oil phase containing an oily component is dispersed in an aqueous phase containing water, or a water-in-oil (W / O) emulsion in which an aqueous phase containing water is dispersed in an oil phase containing an oily component. The aerosol composition is more preferably an oil-in-water (O / W) emulsion in which an oil phase containing an oily component is dispersed in an aqueous phase containing water.

[0047] Furthermore, aerosol compositions and aerosol products can be manufactured as follows. First, the above components are mixed in any proportion to obtain a stock solution composition. The obtained stock solution composition, dimethyl ether, and other propellants as needed are filled into a pressure vessel to obtain an aerosol product filled with the aerosol composition. The aerosol composition is, for example, a crackling composition that, when dispensed, produces a popping sound and bursts with bubbles, giving a crackling sensation.

[0048] Furthermore, aerosol compositions can be used for a variety of purposes, such as for human use, household use, and industrial use. Examples of applications for human use include body lotions, skincare products, hair growth products, cleansers, massage products, hair styling products, hair treatments, shampoos, conditioners, makeup cosmetics, repellents, UV absorbers, and UV scatterers. Examples of household products include cleaning agents, deodorizers, air fresheners, disinfectants, insecticides, insect repellents, waterproofing agents, and water-repellent agents. Industrial applications include lubricants, coatings, adhesives, and paints. Among these, they are particularly suitable for use on the human body. More preferably, they are cleansing compositions and massage compositions. [Examples]

[0049] The present invention will be described in detail below with reference to examples. However, the present invention is not limited to the embodiments described below.

[0050] <Examples 1-6, Comparative Examples 1-5> The raw materials were mixed according to the formulation (mass%) shown in Table 1 to prepare stock solution composition A.

[0051] [Table 1]

[0052] Furthermore, using the formulations (parts by mass) shown in Table 2, a total of 30 g of the obtained stock solution composition A and propellant were filled into pressure-resistant containers (100 mL glass test bottles for aerosols) to obtain aerosol products filled with the aerosol composition. The aerosol products were fitted with a spout-shaped button. Table 2 shows the mass parts of the stock solution composition and propellant in the obtained aerosol products. Table 2 also shows the evaluation results for each aerosol product. The evaluation method will be described later. In Comparative Example 3, the stock solution composition and the propellant were incompatible and separated, making evaluation impossible.

[0053] [Table 2]

[0054] The materials used, including in the following examples and comparative examples, are as follows. [Thickener] (Acryloyldimethyltaurate Ammonium / VP) Copolymer: ARISTOFLEX AVC (Clariant Japan Co., Ltd.) (Acrylates / C10-30 Alkyl Acrylate) Crosspolymer: PEMULEN TR-2 (Lubrisol) Hydroxyethylcellulose: HEC850 (Daicel Corporation) Xanthan gum: Echo Gum T (DSP Gokyo Food & Chemical Co., Ltd.) Carbomer: Carbopol Ultrez 10 (Lubrisol) [Polyol] DPG (Dipropylene Glycol): DPG-RF (ADEKA Corporation) 1,3-Butylene glycol: 1,3BG (KH Neochem Co., Ltd.) Glycerin: Glycerin (Sakamoto Pharmaceutical Co., Ltd.) [oil] Mineral oil: CARNATION (Sonneborn) Cyclopentasiloxane: KF-995 (Shin-Etsu Chemical Co., Ltd.) Dimethicone: 96L-2CS (Shin-Etsu Chemical Co., Ltd.) Hydrogenated Farnesene: NEOSSANCE HEMISQUALANE HF (Nikko Chemicals Co., Ltd.) [Surfactants] PEG-20 Glyceryl Triisostearate: NIKKOL TGI-20 (HLB 8.0) (Nikko Chemicals Co., Ltd.) PEG-10 Hydrogenated Castor Oil: NIKKOL HCO-10 (HLB 6.5) (Nikko Chemicals Co., Ltd.) PEG-20 Hydrogenated Castor Oil: NIKKOL HCO-20 (HLB 10.5) (Nikko Chemicals Co., Ltd.) PEG-30 Hydrogenated Castor Oil: NIKKOL HCO-30 (HLB 11.0) (Nikko Chemicals Co., Ltd.) PEG-40 Hydrogenated Castor Oil: NIKKOL HCO-40 (HLB 12.5) (Nikko Chemicals Co., Ltd.) PEG-80 Hydrogenated Castor Oil: NIKKOL HCO-80 (HLB 15.0) (Nikko Chemicals Co., Ltd.) PEG-100 Hydrogenated Castor Oil: NIKKOL HCO-100 (HLB 16.5) (Nikko Chemicals Co., Ltd.) Dioleth-8 sodium phosphate: NIKKOL DOP-8NV (HLB 12.5) (Nikko Chemicals Co., Ltd.) [others] Triethanolamine: TEA (Dow-Toray Industries, Inc.) Phenoxyethanol: Phenoxyethanol SP (Yokkaichi Synthetic Co., Ltd.) [Propellant] DME: Dimethyl ether LPG: Liquefied Petroleum Gas (vapor pressure 0.15 MPa at 20°C)

[0055] <Examples 7-21, Comparative Examples 6-15> In the same manner as in Example 1, the raw materials other than the propellant were mixed according to the formulations (mass%) shown in Tables 3 to 5 to prepare the stock solution composition. Furthermore, the obtained stock solution composition and propellant were filled into pressure-resistant containers in the same manner as in Example 1, using 20 parts dimethyl ether per 100 parts of the stock solution composition, to obtain aerosol products filled with the aerosol composition. Tables 3-5 show the evaluation results for each aerosol product. The evaluation method will be described later. Tables 4 and 5 also show the HLB of the surfactants used and the viscosity of the stock solution composition. For HLB values, the weighted average value is shown when multiple types of surfactants are used. In Comparative Example 7, the stock solution composition and the propellant were incompatible and separated, making evaluation impossible. Similarly, in Comparative Example 13, the stock solution composition separated.

[0056] [Table 3]

[0057] [Table 4]

[0058] [Table 5]

[0059] The procedure for evaluating the obtained aerosol products is as follows: Unless otherwise specified, the temperature of the aerosol products and the room temperature were set to 25°C for evaluation. (1) Feeling of use (cold feeling) The sensation (cooling sensation) when a certain amount (1g) of the aerosol composition was taken from an aerosol product and spread on the palm of the hand was evaluated sensorily according to the following criteria. 5: Pleasant cooling sensation 4: A slight cooling sensation 3: Weak cooling sensation 2: No cooling sensation 1: It is very cold and painful.

[0060] (2) Stability A transparent container filled with an aerosol composition (concentrate composition and propellant) was shaken for 10 seconds, then allowed to stand, and separation was visually confirmed. 5. After shaking, separation did not occur even after 30 minutes. 4. Separation after 3 minutes following shaking. 3. Separation after 1 minute following shaking. 2: They become miscible after shaking but separate immediately. 1: Incompatible even when shaken.

[0061] (3) Cracking sensation The popping sound produced when a fixed amount (1g) of the aerosol composition was taken from an aerosol product and spread on the palm of the hand was subjectively evaluated. 5: A loud popping sound 4: A moderately loud popping sound 3: A popping sound can be produced, but it is quiet. 2: A slight popping sound can be heard, but it is very quiet. 1: No plosive sounds

[0062] (4) Cleansing power 0.006g of lipstick was spread onto artificial skin (25mm x 25mm) to create makeup stains. 1.0g of aerosol composition was taken from an aerosol product and applied to the makeup stains. The makeup stains were collected using cotton (by tracing with a finger 5 times). The makeup application was evaluated according to the following criteria. 5: It blends with makeup very well and has excellent cleansing power. 4: Excellent at blending with makeup and has sufficient cleansing power. 3: Excellent at blending with makeup and has good cleansing power. 2: Blends reasonably well with makeup and has a slight cleansing effect. 1: Poor makeup blending ability and insufficient cleansing power.

Claims

1. A stock solution composition containing water, a thickener, silicone oil, and a surfactant, and It contains dimethyl ether, The thickening agent contains a polymer of a monomer or monomer mixture containing (meth)acrylic acid, The HLB value of the surfactant is 8.5 to 14.

0. The dimethyl ether content is 8 to 35 parts by mass per 100 parts by mass of the stock solution composition. A cracking aerosol composition.

2. The aerosol composition according to claim 1, wherein the polymer contains at least one selected from the group consisting of carboxyvinyl polymers and alkyl-modified carboxyvinyl polymers.

3. The aerosol composition according to claim 1 or 2, wherein the stock solution composition contains a polyol.

4. The aerosol composition according to claim 3, wherein the polyol comprises at least one selected from the group consisting of diols.

5. The aerosol composition according to claim 1 or 2, wherein the silicone oil comprises at least one compound selected from the group consisting of straight silicone oil and cyclic siloxane.

6. The aerosol composition according to claim 1 or 2, wherein the surfactant comprises at least one selected from the group consisting of nonionic surfactants.

7. The aerosol composition according to claim 1 or 2, wherein the surfactant comprises PEG-40 hydrogenated castor oil.

8. The aerosol composition according to claim 1 or 2, wherein the surfactant comprises two or more surfactants.

9. A container filled with an aerosol composition, and A dispensing mechanism provided in the container for dispensing the aerosol composition. an aerosol product having, An aerosol product wherein the aerosol composition is the aerosol composition described in claim 1 or 2.

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