Aerosol composition and aerosol product

Abstract

To provide an aerosol composition having a bicontinuous structure, which delivers good foam quality even with the inclusion of various oily ingredients.SOLUTION: Provided is an aerosol composition, wherein the aerosol composition comprises a stock solution containing water, a nonionic surfactant, a polyhydric alcohol, and an oily component being liquid at 25°C, and a propellant, wherein the nonionic surfactant comprises polyoxyalkylene phytosterol, polyoxyalkylene glycerin fatty acid ester, and fatty acid alkanolamide surfactant, wherein the content of the fatty acid alkanolamide surfactant in the stock solution is 1.5 mass% or more, the content of the polyhydric alcohol in the stock solution is 3.5 mass% or more, the content of the polyoxyalkylene glycerin fatty acid ester in the stock solution is 13.0 mass% or more, and the stock solution has a bicontinuous structure.SELECTED DRAWING: None

Description

[Technical field]

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

[0002] Conventionally, various studies have been conducted on cosmetics having a bicontinuous structure that is excellent in removing skin stains such as makeup stains. A bicontinuous structure is one in which both the oil phase and the aqueous phase form a continuous phase. Cosmetics having a bicontinuous structure have the advantage of being excellent in solubilizing oily components such as makeup stains and being easily washed off with water. For example, Patent Documents 1 and 2 disclose cosmetics having a bicontinuous structure capable of forming foam. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-112746 A [Patent Document 2] JP 2014-058499 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, cyclic polysiloxanes such as dodecamethylcyclohexasiloxane are used as the oily component in Patent Documents 1 and 2. Cyclic polysiloxanes have high cleaning power and are also considered to be advantageous from the viewpoint of foam formation, but restrictions are being imposed due to concerns about environmental pollution, and alternative raw materials are being sought. Therefore, there is a need for a composition that can form good foam even when various oily components that do not fall under the category of cyclic polysiloxanes are blended, and that can also maintain a bicontinuous structure. The present disclosure provides an aerosol composition having a bicontinuous structure that produces good foam quality even when various oily components are blended therein. [Means for solving the problem]

[0005] The present disclosure provides an aerosol composition comprising: The aerosol composition comprises: A stock solution containing water, a nonionic surfactant, a polyhydric alcohol, and an oil component that is liquid at 25°C; and Propellant, Contains The nonionic surfactant is Polyoxyalkylene phytosterols, Polyoxyalkylene glycerin fatty acid ester, and fatty acid alkanolamide surfactants, Contains The content of the fatty acid alkanolamide surfactant in the undiluted solution is 1.5% by mass or more, The content of the polyhydric alcohol in the undiluted solution is 3.5% by mass or more, The content of the polyoxyalkylene glycerin fatty acid ester in the undiluted solution is 13.0% by mass or more, The present invention relates to an aerosol composition, wherein the concentrate has a bicontinuous structure. Effect of the Invention

[0006] According to the present disclosure, it is possible to provide an aerosol composition having a bicontinuous structure that has good foam quality even when various oily components are blended therein. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] The description of a numerical range such as "XX to YY" or "XX to YY" means a numerical range including the lower and upper limits, unless otherwise specified. When a numerical range is described in stages, the upper and lower limits of each numerical range can be arbitrarily combined.

[0008] The aerosol composition contains a concentrate and a propellant. The concentrate contains water, a nonionic surfactant, a polyhydric alcohol, and an oil component that is liquid at 25° C. Each component used in the aerosol composition will be described below.

[0009] The concentrate contains a nonionic surfactant, and the nonionic surfactant contains a polyoxyalkylene phytosterol, a polyoxyalkylene glycerin fatty acid ester, and a fatty acid alkanolamide surfactant.

[0010] (Polyoxyalkylene Phytosterol) The concentrate contains polyoxyalkylene phytosterol as a nonionic surfactant. The present inventors have investigated a formulation that provides good foam quality and does not destroy the bicontinuous structure even when various oily components that do not fall under the category of cyclic polysiloxanes are blended, and have found that the above problem can be solved by blending polyoxyalkylene phytosterol in the aerosol composition. The reason why the above problem was solved by polyoxyalkylene phytosterol is not clear. The bicontinuous structure is a continuous layer, and nonionic surfactants are usually incorporated into the bicontinuous structure, but the inventors believe that polyoxyalkylene phytosterol is difficult to incorporate into the bicontinuous structure due to its large bulk, and acts as a foaming agent.

[0011] The polyoxyalkylene phytosterol is an alkylene oxide adduct of phytosterols. The number of moles of the alkylene oxide added is preferably 3 to 50 moles, more preferably 5 to 20 moles. The alkylene oxide is preferably at least one selected from the group consisting of ethylene oxide and propylene oxide. That is, the polyoxyalkylene phytosterol is preferably at least one selected from the group consisting of polyoxyethylene phytosterol and polyoxypropylene phytosterol. The polyoxyalkylene phytosterol preferably contains polyoxyethylene phytosterol.

[0012] Examples of polyoxyalkylene phytosterols include PEG-5 phytosterol, PEG-10 phytosterol, PEG-20 phytosterol, PEG-30 phytosterol, and PPG-5 phytosterol. Commercially available polyoxyalkylene phytosterols may be used, and examples of such polyoxyalkylene phytosterols include NIKKOL BPS-5, NIKKOL BPS-10, NIKKOL BPS-20, NIKKOL BPS-30, and NIKKOL PSR-5 from Nikko Chemicals. One type of polyoxyalkylene phytosterol may be used alone, or multiple types may be used in combination.

[0013] The HLB value of the polyoxyalkylene phytosterol is preferably 9.0 to 13.0, more preferably 9.3 to 12.7. The HLB value is an index representing the ratio of the relative affinity of a surfactant to both liquids in an oil-water system, and means the HLB value at 25°C according to the Griffin definition. In this disclosure, when the HLB value in a catalogue is available, the catalogue value is used as a priority.

[0014] The content of polyoxyalkylene phytosterol in the concentrate is not particularly limited, and is preferably 1.0 to 10.0% by mass, more preferably 1.5 to 8.0% by mass, and further preferably 2.0 to 6.0% by mass. By being in the above range, it is possible to form better foam while maintaining the bicontinuous structure.

[0015] (Polyoxyalkylene glycerin fatty acid ester) The concentrate contains a polyoxyalkylene glycerin fatty acid ester as a nonionic surfactant. The polyoxyalkylene glycerin fatty acid ester can form a bicontinuous structure.

[0016] Furthermore, the content of polyoxyalkylene glycerin fatty acid ester in the concentrate is 13.0% by mass or more. With this content, good foam can be formed while maintaining a bicontinuous structure. With the content of polyoxyalkylene glycerin fatty acid ester being 13.0% by mass or more, the polyoxyalkylene glycerin fatty acid ester contributes sufficiently to the formation of a bicontinuous structure. As a result, the present inventors believe that the polyoxyalkylene phytosterol is inhibited from participating in the formation of a bicontinuous structure, and the polyoxyalkylene phytosterol is more likely to exert its action as a foaming agent.

[0017] The polyoxyalkylene glycerin fatty acid ester includes an ester of polyoxyalkylene glycerin and a fatty acid having 10 to 24 carbon atoms (preferably 12 to 20). The polyoxyalkylene glycerin is preferably polyoxyethylene glycerin or polyoxypropylene glycerin. The number of moles of alkylene oxide added in the polyoxyalkylene glycerin is preferably 3 to 60, more preferably 5 to 50 moles, and even more preferably 10 to 35 moles. The fatty acid is preferably stearic acid, isostearic acid, or oleic acid. More preferably, isostearic acid. The polyoxyalkylene glycerin fatty acid ester more preferably includes a polyoxyethylene glycerin fatty acid ester.

[0018] Specifically, the polyoxyalkylene glycerin fatty acid ester is preferably at least one selected from the group consisting of PEG glyceryl stearate, PEG glyceryl distearate, PEG glyceryl tristearate, PEG glyceryl isostearate, PEG glyceryl diisostearate, and PEG glyceryl triisostearate (the number of moles of EG added in each case is preferably 3 to 60, more preferably 5 to 50 moles, and even more preferably 10 to 35 moles). The polyoxyalkylene glycerin fatty acid ester is particularly preferably at least one selected from the group consisting of PEG-20 glyceryl triisostearate, PEG-30 glyceryl triisostearate, and PEG-8 glyceryl isostearate.

[0019] The HLB value of the polyoxyalkylene glycerin fatty acid ester is preferably 7.5 to 12.5, and more preferably 7.8 to 12.2. The content of the polyoxyalkylene glycerin fatty acid ester in the original solution is preferably 13.0 to 30.0 mass %, more preferably 13.5 to 25.0 mass %, and further preferably 13.5 to 22.0 mass %.

[0020] (Fatty acid alkanolamide surfactant) The concentrate contains a fatty acid alkanolamide surfactant as a nonionic surfactant. The fatty acid alkanolamide surfactant can form a bicontinuous structure.

[0021] Furthermore, the content of the fatty acid alkanolamide surfactant in the concentrate is 1.5% by mass or more. This content allows good foam to be formed while maintaining a bicontinuous structure. The content of the fatty acid alkanolamide surfactant is 1.5% by mass or more, and the fatty acid alkanolamide surfactant contributes sufficiently to the formation of a bicontinuous structure. As a result, the inventors believe that the polyoxyalkylene phytosterol is inhibited from participating in the formation of the bicontinuous structure, and the polyoxyalkylene phytosterol is more likely to exert its effect as a foaming agent.

[0022] The fatty acid alkanolamide surfactant is preferably at least one selected from the group consisting of polyoxyalkylene fatty acid alkanolamides and fatty acid alkanolamides. The fatty acid residue (a group obtained by removing a hydroxyl group from a fatty acid (RCO- (R is a monovalent hydrocarbon group, preferably an alkyl group))) in the fatty acid alkanolamide surfactant may be linear or branched, but is preferably linear. The number of carbon atoms in the fatty acid residue is preferably 6 to 24, more preferably 8 to 20. The fatty acid alkanolamide may have a monoalkanolamide structure or a dialkanolamide structure.

[0023] Fatty acid alkanolamide has a structure in which a fatty acid and an alkanolamine are bonded by an amide bond. The alkanolamine structure in the fatty acid alkanolamide surfactant is preferably a structure corresponding to an alkanolamine having 1 to 4 carbon atoms (preferably 2 or 3 carbon atoms), such as methanolamine, ethanolamine, n-propanolamine, isopropanolamine, or n-butanolamine.

[0024] The polyoxyalkylene fatty acid alkanolamide has a structure in which an alkylene oxide is added to a fatty acid alkanolamide. The number of moles of the alkylene oxide added in the polyoxyalkylene fatty acid alkanolamide is preferably 1 to 20, and more preferably 2 to 15 moles.

[0025] Examples of the polyoxyalkylene fatty acid alkanolamide include at least one selected from the group consisting of polyoxyethylene coconut oil fatty acid monoethanolamide (PEG-3 cocamide, PEG-6 cocamide, PEG-11 cocamide) and polyoxyethylene lauric acid monoethanolamide (PEG-3 lauramide). Examples of fatty acid alkanolamides include at least one selected from the group consisting of coconut oil fatty acid monoethanolamide (cocamide MEA), coconut oil fatty acid diethanolamide (cocamide DEA), lauric acid monoethanolamide (lauramide MEA), and lauric acid diethanolamide (lauramide DEA).

[0026] The content of the fatty acid alkanolamide surfactant in the concentrate is preferably 1.5 to 10.0 mass%, more preferably 1.7 to 8.0 mass%, even more preferably 1.8 to 6.0 mass%, and still more preferably 2.7 to 6.0 mass%.

[0027] (Other non-ionic surfactants) The nonionic surfactant may contain other nonionic surfactants in addition to the polyoxyalkylene phytosterol, polyoxyalkylene glycerin fatty acid ester, and fatty acid alkanolamide surfactant, as long as the effects of the present disclosure are not impaired.

[0028] Other nonionic surfactants include pentaglyceryl monolaurate, pentaglyceryl monomyristate, pentaglyceryl monooleate, pentaglyceryl monosodium Polyglycerol fatty acid esters such as POE(80) sorbitan monolaurate, POE(20) sorbitan monolaurate, POE(20) sorbitan monopalmitate, POE(20) sorbitan monostearate, POE(20) sorbitan monooleate, and POE(20) sorbitan monoisostearate; Polyoxyethylene sorbitan fatty acid esters, POE(25) monostearate, polyethylene glycol fatty acid esters such as PEG-20 sorbitan cocoate, polyoxyethylene alkyl 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, polyoxyethylene polyoxypropylene alkyl ethers such as POE(20) POP(4) cetyl ether ether, polyoxyethylene sorbitol fatty acid esters such as POE(60) sorbitol tetrastearate, POE(60) sorbitol tetraoleate, and POE(6) sorbitol monolaurate, polyoxyethylene castor oils and polyoxyethylene hydrogenated castor oils such as POE(40) castor oil, POE(20) hydrogenated castor oil, POE(40) hydrogenated 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, and POE(100) hydrogenated castor oil, Polyoxyethylene lanolin alcohols such as E(10) lanolin alcohol, POE(20) lanolin alcohol, and POE(40) lanolin alcohol; sorbitan fatty acid esters such as sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquistearate, sorbitan monooleate, sorbitan sesquioleate, and sorbitan trioleate; glycerin fatty acid esters such as glyceryl monostearate and glyceryl monomyristate; alkyl glucosides such as lauryl glucoside;Examples of the alkyl dimethyl amine oxide include alkyl dimethyl amine oxide such as lauryl dimethyl amine oxide.

[0029] From the viewpoint of improving the foam quality, polyoxyethylene sorbitan fatty acid esters are preferably used. The content of other nonionic surfactants in the concentrate is not particularly limited, and is preferably 0.1 to 5.0% by mass, more preferably 0.5 to 3.0% by mass.

[0030] (Polyhydric alcohol) The concentrate contains a polyhydric alcohol. The content of the polyhydric alcohol in the concentrate is 3.5% by mass or more. When the concentrate contains the polyhydric alcohol in the above range, the bicontinuous structure can be maintained.

[0031] The polyhydric alcohol is not particularly limited, and any known polyhydric alcohol can be used, for example, the following: The polyhydric alcohol is different from, for example, the polyoxyalkylene glyceryl ether described below. Diols such as propylene glycol (PG), dipropylene glycol (DPG), and 1,3-butylene glycol; and trihydric or higher alcohols such as glycerin, diglycerin, and 1,2,4-butanetriol. The polyhydric alcohol preferably includes a trihydric alcohol. The trihydric alcohol includes at least one selected from the group consisting of glycerin, diglycerin, and 1,2,4-butanetriol, and more preferably includes glycerin.

[0032] The content of the polyhydric alcohol in the concentrate is preferably 3.5 to 20.0% by mass, more preferably 5.0 to 15.0% by mass, and further preferably 5.5 to 12.0% by mass.

[0033] (Polyoxyalkylene glyceryl ether) The aerosol composition preferably further contains a polyoxyalkylene glyceryl ether different from the polyhydric alcohol, which makes it easier to maintain the bicontinuous structure.

[0034] The polyoxyalkylene glyceryl ether is, for example, an alkylene oxide adduct of glycerin. The alkylene oxide is at least one selected from the group consisting of ethylene, propylene, and butylene. The alkylene oxide preferably includes ethylene, propylene, and butylene. The average number of moles of alkylene oxide added is preferably 5 to 40, more preferably 8 to 30. The polyoxyalkylene glyceryl ether is sometimes called, for example, an aqueous moisturizing oil, and is different from nonionic surfactants and oily components described later.

[0035] The polyoxyalkylene glyceryl ether more preferably contains polyoxybutylene polyoxyethylene polyoxypropylene glycerol, which is obtained by adding 8 moles of ethylene oxide and 5 moles of propylene oxide to glycerin, followed by the addition of 3 moles of butylene oxide. This polyoxyalkylene glyceryl ether is also called PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin, and examples of commercially available products include WILBRIDE S-753 (trade name) and WILBRIDE S-753D (trade name).

[0036] The content of the polyoxyalkylene glyceryl ether in the undiluted solution is preferably 0.1 to 20.0% by mass, more preferably 3.0 to 15.0% by mass, and further preferably 4.0 to 12.0% by mass. When it is within the above range, the bicontinuous structure can be more easily maintained.

[0037] (Oily ingredients) The concentrate contains an oil component that is liquid at 25°C. The oil component is not particularly limited, and a wide variety of known water-insoluble (phase-separated from water) oil components can be used. "Water-insoluble" refers to a solubility of 1.0 g or less in 100 g of water at 25°C, for example. Specific examples of oil components include the following, and oil components that are liquid at 25°C can be used.

[0038] vegetable fats such as apricot kernel oil, camellia oil, argan oil, soybean oil, olive oil, castor oil, coconut oil, palm oil, palm kernel oil, sesame oil, jojoba oil, cottonseed oil, rapeseed oil, linseed oil, rosehip oil, sunflower oil, essential oils, avocado oil, almond oil, rice bran oil, safflower oil, corn oil, grapeseed oil, coconut oil, Argania spinosa kernel oil, wheat germ oil, rice germ oil, kukui nut oil, crambe abyssinica seed oil, hemp seed oil, peanut oil, camellia oil, evening primrose oil, pistachio oil, macadamia nut oil, meadowhoo oil, cocoa butter, shea butter, and japan wax; Animal fats and oils, such as emu oil, horse fat, beef tallow, lard, mutton tallow, mink oil, egg yolk fat, carp fat, tuna fat, and menhaden fat; Hydrocarbon oils such as light isoparaffin, squalane, mineral oil (liquid paraffin), petrolatum, dodecane, tetradecane, ozokerite, microcrystalline wax, isoparaffin, ceresin, α-olefin oligomer, polybutene, hydrogenated polyisobutene, hydrogenated polyisoparaffin, limonene, and turpentine; Caproyl alcohol, caprylyl alcohol, capryl alcohol, lauryl alcohol, isostearyl alcohol, myristyl alcohol, cetanol, stearyl alcohol, arachidyl alcohol, behenyl alcohol, oleyl alcohol, hexyldeca higher alcohols such as ethanol, octyldodecanol, decyltetradecanol, cholesterol, and phytosterols; Esters of straight-chain fatty acids and lower alcohols, such as isopropyl myristate, isopropyl palmitate, and ethyl oleate, Esters of straight-chain fatty acids and straight-chain higher alcohols, such as hexyl laurate, myristyl myristate, decyl oleate, and stearyl stearate; Esters of straight-chain fatty acids and branched alcohols, such as methylheptyl laurate, octyldodecyl myristate, ethylhexyl palmitate, isostearyl palmitate, and ethylhexyl stearate; Esters of branched fatty acids and lower alcohols, such as ethyl isostearate and isopropyl isostearate; Esters of branched fatty acids and linear higher alcohols, such as cetyl ethylhexanoate and hexyl isostearate, Esters of fatty acids such as PG dicaprylate, triethylhexanoin, and tri(capryl / capric acid)glyceryl with polyhydric alcohols, Esters of branched fatty acids and branched alcohols, such as 2-octyldodecyl neopentanoate and isostearyl isostearate, Esters of hydroxycarboxylic acids and alcohols, such as lauryl lactate, tri-2-ethylhexyl citrate, trioctyldodecyl citrate, and diisostearyl malate; ester oils such as esters of dibasic acids, such as diisopropyl adipate, diethyl sebacate, etc.; Wax esters such as jojoba oil, jojoba butter, carnauba wax, candelilla wax, rice bran wax, shellac, lanolin, beeswax, montan wax, spermaceti, orange roughy oil, sugar cane wax, palm wax, insect wax, and wool wax; Other oily ingredients include ethers of polyhydric alcohols and monohydric alcohols such as chimyl alcohol, batyl alcohol, and selachyl alcohol; batyl isostearate, batyl stearate; silicones such as alkyl-modified polysiloxanes (dimethylpolysiloxanes (dimethicone)), methylphenylpolysiloxanes, and fluorine-modified polysiloxanes; Oil-based active ingredients include UV absorbers (diethylaminohydroxybenzoylhexyl benzoate, ethylhexyl methoxycinnamate, polysilicone-15), DEET, and fragrance.

[0039] The oily component is, for example, an oily component other than fatty acid. Among these, the oily component preferably includes at least one selected from the group consisting of vegetable oils, hydrocarbon oils, ester oils, silicones, and oily active ingredients. The oily component more preferably includes at least one selected from the group consisting of hydrocarbon oils and ester oils, and even more preferably includes at least one selected from the group consisting of hydrocarbon oils, esters of straight-chain fatty acids and branched alcohols, esters of branched fatty acids and straight-chain higher alcohols, and esters of fatty acids and polyhydric alcohols. It is even more preferable that the oil component contains at least one selected from the group consisting of mineral oil, hydrogenated polyisobutene, methylheptyl laurate, ethylhexyl palmitate, cetyl ethylhexanoate, and triethylhexanoin.

[0040] The oil component preferably contains two or more oil components. It is preferable that the oil component contains a hydrocarbon oil and an ester oil, or contains at least two oil components selected from the group consisting of hydrocarbon oils. It is more preferable that the oil component contains a hydrocarbon oil and an ester oil. By using a plurality of oil components in combination, it is possible to form a better foam while maintaining a bicontinuous structure. The content of the oil component in the concentrate is preferably 15.0 to 45.0 mass %, more preferably 20.0 to 40.0 mass %, and even more preferably 25.0 to 35.0 mass %.

[0041] The content of the hydrocarbon oil in the raw liquid is preferably 3.0 to 40.0 mass %, more preferably 6.0 to 35.0 mass %, and further preferably 7.0 to 30.0 mass %. The content of the ester oil in the raw solution is preferably 5.0 to 30.0% by mass, more preferably 10.0 to 25.0% by mass, and further preferably 12.0 to 25.0% by mass.

[0042] (fatty acid) The concentrate preferably contains fatty acids, which allow for better foam formation while maintaining a bicontinuous structure. The fatty acid may be a straight-chain fatty acid or a branched fatty acid, but is preferably a branched fatty acid. The number of carbon atoms in the fatty acid is preferably 8 to 28, more preferably 12 to 24, and further preferably 16 to 22. The fatty acid particularly preferably contains isostearic acid. The content of fatty acids in the stock solution is preferably 0.5 to 5.0% by mass, more preferably 1.0 to 3.0% by mass, and further preferably 1.5 to 2.5% by mass.

[0043] (water) The concentrate in the aerosol composition contains water. The content ratio of water in the concentrate is not particularly limited. It can be appropriately selected in consideration of the purpose of the aerosol composition. The content of water in the concentrate is preferably 10.0% by mass to 40.0% by mass, more preferably 15.00% by mass to 35.0% by mass, and further preferably 20.0% by mass to 30.0% by mass.

[0044] (optional ingredient) The concentrate may contain optional components other than the above-mentioned components to the extent that the above-mentioned effects are not impaired. Optional components include, for example, active ingredients, fragrances, antioxidants, preservatives, pH adjusters, chelating agents, oils and fats, silicones, thickeners, moisturizers, bactericides, skin protectants, vitamins, various extracts, deodorants and deodorants, cooling agents, UV absorbers, UV scattering agents, pest repellents, and insecticides. The proportion of optional components is appropriately determined based on the intended use of the composition.

[0045] Specific examples of optional components include the following: Coolants (menthol, camphor, etc.); pH adjusters (e.g. citric acid, sodium citrate, lactic acid, triethanolamine, KOH, NaOH, etc.); rust inhibitors (e.g. ammonia water, ammonium benzoate, sodium nitrite, etc.); preservatives (e.g. parabens, phenoxyethanol, methyl parahydroxybenzoate); urea; minerals such as calcium, iron, sodium, etc.; pigments; colorants; chelating agents such as EDTA-2Na, etc.

[0046] (Propellant) The aerosol composition contains a concentrate and a propellant. The propellant is not particularly limited, and any known propellant that can be used in aerosol products can be used. Liquefied gas or compressed gas may be used, or liquefied gas and compressed gas may be used in combination. The aerosol composition preferably contains liquefied gas. The content of the propellant is not particularly limited, and can be appropriately changed depending on the purpose of the aerosol product.

[0047] The liquefied gas is not particularly limited, and examples thereof include hydrocarbons such as propane, butane, or liquefied petroleum gas (LPG) containing these, LNG, and isopentane, organic fluorine compounds such as hydrofluoroolefins and hydrochlorofluoroolefins, and dimethyl ether (DME). Liquefied petroleum gas (LPG) is preferred. The compressed gas is not particularly limited, and examples thereof include carbon dioxide gas, nitrogen gas, nitrous oxide gas, and argon gas. , helium, and compressed air. Preferably, the gas is at least one selected from the group consisting of carbon dioxide gas and nitrogen gas.

[0048] The concentrate has a bicontinuous structure (isotropic single liquid phase). The aerosol composition preferably has a bicontinuous structure. In the bicontinuous structure, the oil phase and the water phase are both continuous phases. In the present disclosure, whether the concentrate has a bicontinuous structure is determined as follows. When the concentrate is colorless and transparent or translucent in the evaluation of the transparency of the concentrate, the water-soluble dye diffuses in the concentrate in the evaluation of the water-soluble dye diffusibility, and the oil-soluble dye diffuses in the concentrate in the evaluation of the oil-soluble dye diffusibility, the concentrate is determined to have a bicontinuous structure.

[0049] When the concentrate is filled into a pressure-resistant container to produce an aerosol product in accordance with the evaluation of aerosol composition transparency described below, the aerosol composition is judged to have a bicontinuous structure if it is a transparent single phase or translucent. The concentrate is, for example, a bicontinuous microemulsion or a bicontinuous nanoemulsion, and the aerosol composition is, for example, a bicontinuous microemulsion or a bicontinuous nanoemulsion.

[0050] Next, aerosol products will be described. Aerosol products are a container filled with an aerosol composition, and The container has a discharge mechanism for discharging the aerosol composition. The discharge mechanism and the container are not particularly limited, and known ones may be adopted. The container may be any one that can withstand the pressure of the propellant, and known containers made of resin, metal, glass, etc. may be used. The discharge mechanism is also not particularly limited, and known ones may be used. The discharge mechanism includes, for example, a valve device and an actuator. In addition, a structure for mounting the valve device may be appropriately selected depending on the type of pressure-resistant container. The actuator in the discharge mechanism is not particularly limited and may be any known actuator, for example, a spout-shaped actuator.

[0051] The pressure (gauge pressure) inside the container of the aerosol product is not particularly limited. The propellant may be filled so that the pressure (gauge pressure) inside the container when filled in the aerosol container is, for example, 1 MPa or less at 25°C.

[0052] The methods for producing the concentrate, aerosol composition, and aerosol product are not particularly limited. For example, the following methods can be mentioned. The concentrate in the aerosol composition can be obtained by mixing the above-mentioned components and optional components as required in any ratio.

[0053] The aerosol composition and the aerosol product can be produced as follows: First, the above-mentioned components are mixed in any ratio to obtain a concentrate, and the concentrate and the propellant obtained are filled into a pressure-resistant container to obtain an aerosol product filled with the aerosol composition. The aerosol composition is, for example, a foam-forming aerosol composition, and the aerosol product is discharged in the form of, for example, foam. In order to discharge the aerosol product in the form of foam, a known foam-forming spout or the like may be used for the aerosol product.

[0054] The aerosol composition can be used for a variety of purposes, such as for human use, for home use, and for industrial use. For human use, examples include body lotions, skin care agents, hair growth agents, cleansing agents, massage agents, hair styling agents, hair treatment agents, shampoos, conditioners, makeup cosmetics, repellents, ultraviolet absorbing agents, and ultraviolet scattering agents. Can be obtained. For household use, examples include cleaning agents, deodorants, fragrances, disinfectants, insecticides, insect repellents, waterproofing agents, and water repellents. Examples of industrial uses include lubricants, coating agents, adhesives, paints, etc. Among these, the composition is particularly suitable for use on the human body, and more preferably as a cleansing composition. EXAMPLES

[0055] The present disclosure will be specifically described below with reference to examples, but the present disclosure is not limited to the aspects of the following examples.

[0056] <Examples 1 to 29 and Comparative Examples 1 to 7> The raw materials were mixed according to the formulations (mass %) shown in Tables 1 to 4 to prepare stock solutions. Furthermore, 90.0% by mass of the obtained concentrate and 10.0% by mass of LPG as a propellant were filled into a pressure-resistant container (aerosol glass test bottle 100 mL) in a total of 30 g to obtain each aerosol product filled with the aerosol composition. A spout-shaped button "FD129W"3" (Mitani Valve Co., Ltd.) was used for the aerosol product. The evaluation results of each aerosol product are shown in Tables 1 to 4. The evaluation methods will be described later.

[0057] <Examples 30 to 35> The raw materials were mixed according to the formulation (mass %) shown in Table 5 to prepare a stock solution. Furthermore, a total of 30 g of the obtained concentrate and propellant was filled into a pressure-resistant container (aerosol glass test bottle 100 mL) according to the aerosol composition prescription (mass %) in Table 5 to obtain each aerosol product filled with the aerosol composition. A spout-shaped button "FD129W"3" (Mitani Valve Co., Ltd.) was used for the aerosol products. Carbon dioxide gas and nitrogen gas were filled at 25°C to the pressures shown in the table. The evaluation results for each aerosol product are shown in Table 5. The evaluation method will be described later.

[0058] The materials used in the following examples and comparative examples are as follows: [Oily ingredients] NIKKOL IOP: Ethylhexyl palmitate (Nikko Chemicals Co., Ltd.) NIKKOL Trifat S-308: Triethylhexanoin (Nikko Chemicals Co., Ltd.) Pearleem 3: Hydrogenated polyisobutene (NOF Corporation) NIKKOL CIO: Cetyl ethylhexanoate (Nikko Chemicals Co., Ltd.) NIKKOL GS-MHL: Methylheptyl laurate (Nikko Chemicals Co., Ltd.) Carnation: Mineral oil (Sonneborn) [Polyhydric alcohol] Concentrated glycerin for cosmetics: Glycerin (Kao Corporation) [fatty acid] Isostearic acid EX: Isostearic acid (Kyukyu Alcohol Kogyo Co., Ltd.) [Polyoxyalkylene glyceryl ether] WILBRIDE S-753D: PEG / PPG / Polybutylene Glycol-8 / 5 / 3 Glycerin, Tocopherol (NOF Corporation)

[0059] [Nonionic surfactants] NIKKOL TGI-20: PEG-20 glyceryl triisostearate (Nikko Chemicals Co., Ltd.) EMALEX GWIS-330: PEG-30 glyceryl triisostearate (Nihon Emulsion Co., Ltd.) Uniox GM-8IS: PEG-8 glyceryl isostearate (NOF Corporation) Stahome DFC: Cocamide DEA (92%), glycerin (NOF Corporation) Amizet 2L-Y: PEG-3 Lauramide (Kawaken Fine Chemicals Co., Ltd.) Amizet 2C: PEG-3 Cocamide (Kawaken Fine Chemicals Co., Ltd.) Amizet 5C: PEG-6 Cocamide (Kawaken Fine Chemicals Co., Ltd.) Nonion LT-280: PEG-80 sorbitan laurate (NOF Corporation) NIKKOL BPS-5: PEG-5 Phytosterol (Nikko Chemicals Co., Ltd.) NIKKOL BPS-10: PEG-10 Phytosterol (Nikko Chemicals Co., Ltd.) NIKKOL PSR-5: PPG-5 Phytosterol (Nikko Chemicals Co., Ltd.)

[0060] [Propellant] LPG 0.49MPa: Liquefied petroleum gas (vapor pressure 0.49MPa at 20℃) DME / LPG0.39MPa=20 / 80: Dimethyl ether / liquefied petroleum gas (vapor pressure 0.39MPa at 20℃) mixed in a mass ratio of 20 / 80 1233zd:HFO-1233zd 1234ze:HFO-1234ze CO2: Carbon dioxide N2: Nitrogen gas iP / iB=75 / 25: Isopentane / isobutane mixed in a mass ratio of 75 / 25

[0061] [Table 1]

[0062] [Table 2]

[0063] [Table 3]

[0064] [Table 4]

[0065] [Table 5]

[0066] The procedure for evaluating the obtained aerosol products was as follows. The temperature of the aerosol product and room temperature were set to 25°C for the evaluation unless otherwise specified. (1) Stock solution transparency The obtained stock solution was placed in a 50 mL vial, and the transparency was judged according to the following criteria. ◎: A transparent single phase. ○: Semi-transparent. ×: Cloudy.

[0067] (2) Water-soluble dye diffusibility The following procedure was used to confirm whether the water-soluble dye diffuses into the stock solution. 0.5g of Blue No. 1 was dissolved in 49.5g of water to prepare an aqueous solution of Blue No. 1. 0.5g of the stock solution was placed on a glass plate, and 0.1g of the aqueous solution of Blue No. 1 was dropped onto the stock solution to confirm whether it would diffuse. ○: The dye solution diffuses quickly into the stock solution. ×: The dye solution does not diffuse into the original solution.

[0068] (3) Oil-soluble pigment diffusion The following procedure was used to confirm whether the oil-soluble dye would diffuse into the stock solution. 0.5 g of Blue No. 403 was dissolved in 49.5 g of hydrogenated polyisobutene to prepare a solution of Blue No. 403. 0.5 g of the stock solution was placed on a glass plate, and 0.1 g of the Blue No. 403 solution was dropped into the stock solution to confirm whether it would diffuse. ○: The dye solution diffuses quickly into the stock solution. ×: The dye solution does not diffuse into the original solution.

[0069] (4) Aerosol composition transparency (LPG 0.49MPa 10.0%) A total of 30 g of the obtained concentrates of the Examples and Comparative Examples (90.0 mass %) and LPG (0.49 MPa: 10.0 mass %) were filled into pressure-resistant containers (100 mL glass test bottles for aerosols), and the transparency of the aerosol compositions in the obtained aerosol products was evaluated according to the following criteria. ◎: A transparent single phase. ○: Semi-transparent. ×: Cloudy.

[0070] (5) Foam Approximately 1 g of the aerosol composition was dispensed onto the back of the hand, and the foam quality was evaluated by touching with the finger. ◎: Foam with moderate elasticity ○: Foam that foams and retains its shape to some extent △: Foam that foams but breaks immediately ×: No foaming

Claims

1. 1. An aerosol composition comprising: The aerosol composition comprises: A stock solution containing water, a nonionic surfactant, a polyhydric alcohol, and an oily component that is liquid at 25°C; and Propellant, Contains The nonionic surfactant is Polyoxyalkylene phytosterols, Polyoxyalkylene glycerin fatty acid ester, and fatty acid alkanolamide surfactants, Contains The content of the fatty acid alkanolamide surfactant in the undiluted solution is 1.5% by mass or more, The content of the polyhydric alcohol in the undiluted solution is 3.5% by mass or more, The content of the polyoxyalkylene glycerin fatty acid ester in the undiluted solution is 13.0% by mass or more, The aerosol composition, wherein the concentrate has a bicontinuous structure.

2. The aerosol composition according to claim 1 , wherein the concentrate further contains a polyoxyalkylene glyceryl ether different from the polyhydric alcohol.

3. 2. The aerosol composition according to claim 1, wherein the content of the polyoxyalkylene phytosterol in the concentrate is 1.0 to 10.0% by mass.

4. 2. The aerosol composition according to claim 1, wherein the fatty acid alkanolamide surfactant is at least one selected from the group consisting of polyoxyalkylene fatty acid alkanolamides and fatty acid alkanolamides.

5. 2. The aerosol composition of claim 1, wherein the polyhydric alcohol comprises a trihydric alcohol.

6. The aerosol composition according to claim 1 , wherein the oil component comprises at least one selected from the group consisting of hydrocarbon oils and ester oils.

7. The aerosol composition according to claim 1 , wherein the oil component comprises two or more oil components.

8. 2. The aerosol composition of claim 1, wherein the concentrate further comprises a fatty acid.

9. The aerosol composition according to claim 1 , wherein the aerosol composition has a bicontinuous structure.

10. a container filled with an aerosol composition, and a discharge mechanism provided in the container for discharging the aerosol composition; 1. An aerosol product comprising: An aerosol product, wherein the aerosol composition is the aerosol composition according to any one of claims 1 to 9.

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