Foaming aerosol composition and aerosol product

Abstract

To provide a foamable aerosol composition having good foam quality, having good sense of use such as finger combing when applied to the hair and capable of achieving stability of a composition.SOLUTION: There is provided a foamable aerosol composition which comprises a stock solution composition containing water, a cationic surfactant, a higher alcohol and an oily component, monochlorotrifluoropropene and carbon dioxide gas, wherein the monochlorotrifluoropropene is at least one selected from the group consisting of transCF3CH=CClH and cisCF3CH=CClH, the mass ratio of the content ratio of the higher alcohol to the content ratio of the cationic surfactant in the stock solution composition is 1.05 to 25.00, the stock solution composition has a viscosity of 50000 mPa s or less and the foamable aerosol composition substantially comprises no anionic surfactant and nonionic surfactant.SELECTED DRAWING: None

Description

[Technical Field]

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

[0002] Numerous skin care products have been developed touting the blood circulation promoting effect of incorporating carbon dioxide gas, and similar effects are expected in hair care products. However, in foaming products using carbon dioxide gas, increasing the amount of carbon dioxide gas incorporated tends to decrease stability. For example, Patent Document 1 discloses a technique for incorporating a hydrocarbon compound such as isopentane to improve the stability of foaming aerosol products containing carbon dioxide gas. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-002046 [Patent Document 2] Japanese Patent Publication No. 2020-023474 Summary of the Invention [Problem to be solved by the invention]

[0004] However, safety concerns arise because isopentane used in Patent Document 1 is a flammable gas. Therefore, for example, Patent Document 2 discloses a foamable composition that combines a hydrofluoroolefin with low flammability and a compressed gas, but this is not sufficient in terms of good foam quality.

[0005] The present inventors have investigated a foamable composition that is highly stable and has good foam quality, based on a foamable composition that combines carbon dioxide gas with low-flammability hydrofluoroolefins and incorporates an oily component as an active ingredient. Foamable compositions often contain a combination of a cationic surfactant and a nonionic surfactant, but it has been found that when a foamable composition that combines hydrofluoroolefins and carbon dioxide gas is combined with a cationic surfactant and a nonionic surfactant, the composition loses smoothness when run through hair and the feel when used is reduced. As described above, there are problems in foaming compositions that employ a propellant with low flammability and that use a cationic surfactant, in order to achieve good foam quality, a good feel when applied to hair, such as smoothness when runny fingers through the hair, and stability of the composition. The present disclosure relates to a foaming aerosol composition that can solve the above problems. [Means for solving the problem]

[0006] The present disclosure provides a foamable aerosol composition comprising: The foamable aerosol composition comprises a concentrate composition containing water, a cationic surfactant, a higher alcohol, and an oily component; Contains monochlorotrifluoropropene and carbon dioxide gas, The monochlorotrifluoropropene is at least one selected from the group consisting of transCF3CH=CClH (1233zdE) and cisCF3CH=CClH (1233zdZ), the mass ratio of the content of the higher alcohol to the content of the cationic surfactant in the concentrate composition (higher alcohol / cationic surfactant) is 1.05 to 25.00; the viscosity of the concentrate composition measured at a liquid temperature of 30°C using a BM type viscometer is 50,000 mPa s or less; The foamable aerosol composition is substantially free of anionic surfactants and nonionic surfactants. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to provide a foamable aerosol composition that employs a propellant with low flammability and uses a cationic surfactant, which has good foam quality, a good usability such as smooth running of fingers when applied to hair, and can achieve composition stability. DETAILED DESCRIPTION OF THE INVENTION

[0008] Unless otherwise specified, the expressions "XX to YY" or "XX to YY" representing a numerical range mean a numerical range including the lower and upper limits, which are the endpoints. When a numerical range is described in stages, the upper and lower limits of each numerical range can be combined in any way.

[0009] The foamable aerosol composition comprises a monochlorotrifluoropropene. The monochlorotrifluoropropene is at least one selected from the group consisting of transCF3CH=CClH (HFO-1233zdE) and cisCF3CH=CClH (HFO-1233zdZ). CF3CH=CClH is also called 1-chloro-3,3,3-trifluoropropene. It is particularly preferred that the monochlorotrifluoropropene is transCF3CH=CClH (HFO-1233zdE).

[0010] The monochlorotrifluoropropene can function as a propellant and a foaming agent. Compared with liquefied gases such as LPG, monochlorotrifluoropropene has a lower vapor pressure, can exhibit moderate foaming properties, and can form stable foam with a low specific gravity and a sense of volume. Furthermore, by combining monochlorotrifluoropropene with a cationic surfactant without substantially using an anionic surfactant or a nonionic surfactant, it is believed that the higher alcohol and the cationic surfactant form a lamellar gel (α-gel) network, and the monochlorotrifluoropropene is uniformly incorporated into the lamellar gel network. Therefore, the present inventors believe that it is possible to achieve good foam quality, usability, and composition stability.

[0011] The content of monochlorotrifluoropropene in the foamable aerosol composition is not particularly limited, but is preferably 0.5% by mass to 30% by mass, more preferably 1% by mass to 22% by mass, even more preferably 2% by mass to 15% by mass, still more preferably 3% by mass to 8% by mass, and particularly preferably 4% by mass to 7% by mass.

[0012] The foamable aerosol composition contains carbon dioxide gas. Carbon dioxide gas can function as a propellant and a foaming agent. It is presumed that carbon dioxide gas dissolves slightly in the concentrate composition, which contributes to better foaming properties.

[0013] The content of carbon dioxide gas in the foamable aerosol composition is not particularly limited as long as the aerosol composition can be ejected. It is preferably 0.5% by mass to 5.0% by mass. Within this range, better foaming properties can be achieved. The carbon dioxide content in the aerosol composition is more preferably 1.0% by mass to 3.0% by mass, and even more preferably 1.5% by mass to 2.5% by mass.

[0014] The mass ratio of carbon dioxide gas to monochlorotrifluoropropene (carbon dioxide gas:monochlorotrifluoropropene) in the aerosol composition is preferably 3:1 to 1:10, more preferably 2:1 to 1:5, and even more preferably 2:3 to 2:8. When the mass ratio is within the above range, good foaming properties are obtained.

[0015] The concentrate composition in the foamable aerosol composition contains an oily component. In addition to serving as an active ingredient, the oily component can contribute to improving the feel of use, moisturizing, moisturizing, and providing oil. The oily component is not particularly limited, but examples thereof include ester compounds, hydrocarbon compounds, silicon compounds, and oils and fats. The oily component is preferably at least one selected from the group consisting of ester compounds and hydrocarbon compounds.

[0016] Examples of the ester compounds include fatty acid esters such as isopropyl myristate, butyl myristate, isocetyl myristate, octyldodecyl myristate, butyl stearate, ethylhexyl stearate, isopropyl isostearate, isopropyl palmitate, ethylhexyl palmitate, ethyl linoleate, butyloctyl salicylate, cetyl ethylhexanoate, and ethyl olivate (ethyl oleate); triethylhexanoin, propylene glycol monocaprylate, propylene glycol dicaprylate, trimethylolpropane triethylhexanoate, and trimethylolpropane triisostearate. polyhydric alcohol fatty acid esters such as caprylic / capric triglyceride, and polybasic acid esters such as diisopropyl adipate, diisopropyl sebacate, and diethyl sebacate; and dimer acid esters such as phytosteryl / isostearyl / cetyl / stearyl / behenyl dimer dilinoleate, dimer dilinoleyl dimer dilinoleate, dimer dilinoleyl bis(behenyl / isostearyl / phytosteryl) dimer dilinoleate, di(isostearyl / phytosteryl) dimer dilinoleate, hydrogenated castor oil dimer dilinoleate, and diglyceryl isostearate dimer dilinoleate.

[0017] Examples of hydrocarbon compounds include kerosene, mineral oil, squalane, liquid paraffin, and light isoparaffin. Silicon compounds include, for example, dimethicone, cyclopentasiloxane, and caprylyl methicone.

[0018] Examples of oils and fats include birch oil, rosehip oil, jojoba oil, tallow oil, sunflower oil, grapeseed oil, avocado oil, hazelnut oil, camellia oil, broccoli seed oil, babassu oil, baobab oil, soybean oil, olive oil, coffee bean oil, castor oil, rice bran oil, palm oil, palm kernel oil, tung oil, peach kernel oil, cherry oil, cranberry seed oil, tung oil, jasmine oil, shortening, salad oil, white-pressed oil, shiso oil, pecan nut oil, pistachio oil, perilla oil, kaya oil, apricot kernel oil, and ake. Examples of suitable oils include vegetable oils such as bean oil, corn oil, black mortar oil, macadamia nut oil, linseed oil, palm oil, sea buckthorn, cottonseed oil, hemp seed oil, grape oil, poppy seed oil, mustard oil, camellia oil, wheat germ oil, evening primrose oil, peanut oil, pumpkin seed oil, laurel oil, safflower oil, argan oil, meadowfoam oil, marula nut oil, pomegranate seed oil, coconut oil, neem oil, soybean oil, kiwi fruit seed oil, mongongo oil, and walnut oil; and animal oils such as lanolin, horse oil, mink oil, and squalene.

[0019] Among these, the oily component preferably contains at least one selected from the group consisting of fatty acid esters, dimer acid esters, and hydrocarbon compounds, and even more preferably contains at least one selected from the group consisting of cetyl ethylhexanoate, dimer dilinoleate (phytosteryl / isostearyl / cetyl / stearyl / behenyl), and squalane.

[0020] The content of the oily component in the concentrate composition is preferably 0.1% by mass to 10.0% by mass, more preferably 0.5% by mass to 8.0% by mass, even more preferably 1.0% by mass to 6.0% by mass, and even more preferably 1.5% by mass to 4.0% by mass.

[0021] The concentrate composition contains a higher alcohol. The higher alcohol is not particularly limited, but is, for example, an aliphatic alcohol. The higher alcohol may be a monohydric alcohol, a dihydric alcohol, or a trihydric alcohol, but is preferably a monohydric alcohol. The higher alcohol may be a primary, secondary, or tertiary alcohol, but is preferably a primary alcohol. The number of carbon atoms in the higher alcohol is preferably 8 to 30, more preferably 10 to 24, even more preferably 12 to 22, and even more preferably 14 to 20. The higher alcohol may be linear or branched, but is preferably linear.

[0022] The higher alcohol is preferably at least one selected from the group consisting of monohydric aliphatic alcohols having 8 to 30 carbon atoms, such as cetyl alcohol, stearyl alcohol, hexyldecanol, isostearyl alcohol, octyldodecanol, decyltetradecanol, and oleyl alcohol, and more preferably at least one selected from the group consisting of cetyl alcohol and stearyl alcohol.

[0023] The content of higher alcohol in the concentrate composition is preferably 1.0% by mass to 25.0% by mass, more preferably 1.2% by mass to 20.0% by mass, even more preferably 1.5% by mass to 15.0% by mass, even more preferably 2.0% by mass to 10.0% by mass, and even more preferably 2.5% by mass to 8.0% by mass.

[0024] The concentrate composition contains a cationic surfactant. The cationic surfactant is not particularly limited, and known surfactants can be used. Examples of the cationic surfactant include alkyl ammonium salts such as stearoxypropyltrimonium chloride, steartrimonium chloride, cetrimonium chloride, distearyldimonium chloride, lauryltrimonium chloride, behentrimonium chloride, lauryltrimethylammonium chloride, hexadecyltrimethylammonium chloride, and trimethylstearylammonium chloride; alkylbenzylammonium salts; and other quaternary ammonium salts. Examples include primary to tertiary amines such as amidoamines such as stearamidopropyldimethylamine; stearylamine acetate; and polyoxyethylene alkylamines such as polyoxyethylene laurylamine and polyoxyethylene stearylamine.

[0025] The cationic surfactant is preferably at least one selected from the group consisting of quaternary ammonium salts and primary to tertiary amines, more preferably at least one selected from the group consisting of alkylammonium salts and tertiary amines, and even more preferably at least one selected from the group consisting of stearoxypropyltrimonium chloride, steartrimonium chloride, cetrimonium chloride, distearyldimonium chloride, lauryltrimonium chloride, and stearamidopropyldimethylamine.

[0026] The content of the cationic surfactant in the concentrate composition is not particularly limited and may be appropriately changed depending on the oily component used. The content of the cationic surfactant in the concentrate composition is preferably 0.2% by mass to 5.0% by mass, more preferably 0.4% by mass to 4.0% by mass, even more preferably 0.5% by mass to 3.0% by mass, even more preferably 0.7% by mass to 2.0% by mass, and even more preferably 0.8% by mass to 1.6% by mass.

[0027] The mass ratio of the content of higher alcohol to the content of cationic surfactant in the concentrate composition (higher alcohol / cationic surfactant) must be 1.05 to 25.00. The inventors believe that this range allows the higher alcohol and cationic surfactant to form a lamellar gel (α-gel) network while achieving a viscosity that allows for discharge as an aerosol, thereby achieving good foam quality, usability, and composition stability. It is believed that a mass ratio of 1.05 or higher makes it easier for the higher alcohol and cationic surfactant to form a lamellar gel (α-gel) network.

[0028] The mass ratio (higher alcohol / cationic surfactant) is preferably 1.08 to 20.00, more preferably 2.00 to 15.00, even more preferably 2.2 to 10.00, and still more preferably 2.40 to 7.00.

[0029] Furthermore, the mass ratio of the oil component to the cationic surfactant in the concentrate composition (oil component / cationic surfactant) is preferably 8.00 or less. When the mass ratio (oil component / cationic surfactant) is 8.00 or less, the balance of the cationic surfactant to the oil component is appropriate, resulting in good foam quality and a good feel when used, and further improving the stability of the composition. The mass ratio (oil component / cationic surfactant) is preferably 1.00 to 5.00, more preferably 1.50 to 4.00, and even more preferably 1.70 to 3.00.

[0030] The foaming aerosol composition is substantially free of anionic surfactants and nonionic surfactants. As described above, a cationic surfactant is used in the foaming aerosol composition. However, it has been found that the addition of a nonionic surfactant affects the smoothness of the composition, for example, by making it easier for fingers to get caught in the hair when applied to hair. In particular, it has been found that the use of a cationic surfactant and a nonionic surfactant in combination with the addition of carbon dioxide gas tends to increase the viscosity of the composition, affecting the feel of use. Furthermore, the use of an anionic surfactant will form a complex with the cationic surfactant, resulting in poor foam quality and a poor feel when used.Furthermore, the foamable aerosol composition is preferably substantially free of amphoteric surfactants.

[0031] The terms "substantially free of anionic surfactants and nonionic surfactants" and "substantially free of amphoteric surfactants" mean that the above surfactants are not intentionally added to the foamable aerosol composition in amounts that would enable the surfactants to exert their effects, and the foamable aerosol composition may contain trace amounts of the above surfactants that are inevitably mixed in during the production of the foamable aerosol composition. For example, the aerosol composition may contain surfactants (so-called carryover components) that are present in an amount less than the amount required for the aerosol composition to exhibit its effect, even though the surfactants are incidental to the formulated components. For example, the total content of anionic surfactants and nonionic surfactants in the aerosol composition, or the content of amphoteric surfactants in the aerosol composition, is preferably 0.05% by mass or less, more preferably 0.01% by mass or less, even more preferably 0.001% by mass or less, and particularly preferably 0% by mass.

[0032] The mass ratio of the content of higher alcohol to the content of oily component in the concentrate composition (higher alcohol / oily component) is preferably 0.30 to 10.00, more preferably 0.50 to 6.00, even more preferably 0.70 to 3.00, and still more preferably 1.20 to 2.60.

[0033] Furthermore, the viscosity of the concentrate composition, measured at a liquid temperature of 30°C using a BM-type viscometer, must be 50,000 mPa·s or less. Having the viscosity of the concentrate composition within this range makes it possible to achieve good foam quality, a pleasant feel when used, and stability of the composition, while also improving the dischargeability of the aerosol product. The viscosity is preferably 100 mPa·s to 30,000 mPa·s, more preferably 500 mPa·s to 20,000 mPa·s, even more preferably 800 mPa·s to 10,000 mPa·s, and even more preferably 1,000 mPa·s to 8,000 mPa·s.

[0034] The viscosity of the concentrate composition can be controlled by, for example, the type and amount of higher alcohol and cationic surfactant. Increasing the amounts of both the higher alcohol and the cationic surfactant tends to increase the viscosity.

[0035] Specifically, the viscosity of the concentrate composition is measured as follows. 220 mL of the concentrate composition was added to a 225 mL glass bottle, which was then sealed and immersed in a thermostatic water bath set to 30°C for at least 1 hour. The viscosity was then measured using a BM-type viscometer (TV-10M, manufactured by Toki Sangyo Co., Ltd.) at rotor No. M3 and a rotation speed of 12 rpm for 60 seconds, and the value measured was recorded as the viscosity at 30°C. If the viscosity exceeded 10,000 mPa s, it was measured using rotor No. M4 and a rotation speed of 6 rpm.

[0036] The concentrate composition contains water. The content of water in the concentrate composition is preferably 50.0 to 99.0% by mass, more preferably 60.0 to 97.0% by mass, even more preferably 70.0 to 95.0% by mass, still more preferably 80.00 to 92.0% by mass, and particularly preferably 85.0 to 90.0% by mass.

[0037] The pH of the concentrate composition is not particularly limited, but is preferably weakly acidic since it contains a cationic surfactant. The pH of the concentrate composition is preferably about 3.0 to 6.5, more preferably about 3.5 to 5.0, and even more preferably about 3.7 to 4.4. When an amine is used as the cationic surfactant, it is preferable to neutralize it to control the pH within the above range.

[0038] To prevent corrosion of the container of an aerosol product, the chloride ion concentration of the concentrate composition is preferably 1000 ppm or less by mass. More preferably, it is 800 ppm or less, and even more preferably, it is 600 ppm or less. There is no particular lower limit, but it is preferably 0 ppm or more, 100 ppm or more, or 200 ppm or more. The chloride ion concentration can be controlled by the type and amount of cationic surfactant.

[0039] The chloride ion concentration was measured as follows. 1.0 g, 0.5 g, and 0.1 g of each stock composition were weighed into a 200 mL beaker, diluted with 100 mL of purified water, and then placed on the magnetic stirrer of an automatic potentiometric titrator (AT-610, Kyoto Electronics Manufacturing Co., Ltd.), and a magnetic rotor was inserted for stirring. A composite silver electrode and a burette were then immersed in the diluted stock composition, and titration was performed with a 0.01 mol / L silver nitrate solution.

[0040] The concentrate composition may contain additives such as active ingredients, fragrances, antioxidants, preservatives, pH adjusters, thickeners, moisturizers, disinfectants, skin protectants (amino acids), vitamins, various extracts, deodorants, fresheners, UV absorbers, UV scattering agents, pest repellent ingredients, and others, to the extent that the above-mentioned effects are not impaired. For example, alcohol may be added. Specific examples include the following. Lower alcohols (e.g., aliphatic monohydric alcohols with 1 to 3 carbon atoms, such as ethanol and isopropanol); trihydric or higher polyhydric alcohols (e.g., glycerin); pH adjusters (e.g., citric acid, 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, and sodium; pigments; colorants; silicone oils such as dimethicone; chelating agents such as EDTA-2Na, etc.

[0041] The concentrate composition is preferably an oil-in-water emulsion (O / W emulsion). There are no particular limitations on the method for producing the O / W emulsion, and known methods can be used. The aqueous phase and the oil phase are mixed together and dispersed using, for example, a homogenizer or an ultrasonic disperser.

[0042] Next, aerosol products will be described. Aerosol products are a container filled with a foamable aerosol composition; and The container has a discharge mechanism that discharges the foamable aerosol composition. The discharge mechanism and the container are not particularly limited, and known ones can be used. The container may be made of any material that can withstand the pressure of the propellant, such as a known resin, metal, or glass container.

[0043] The pressure (gauge pressure) inside the container of the aerosol product is not particularly limited. The aerosol product may be filled so that the pressure (gauge pressure) inside the container when filled with monochlorotrifluoropropene and carbon dioxide gas is, for example, 1 MPa or less at 25°C.

[0044] The methods for producing the foamable aerosol composition and the aerosol product are not particularly limited. For example, the following methods can be mentioned. The concentrate composition for the foamable aerosol composition can be obtained by mixing water, a cationic surfactant, a higher alcohol, an oily component, and, if necessary, other components in any ratio. The aerosol product can be produced as follows: First, water, a cationic surfactant, a higher alcohol, an oily component, and optionally other components are mixed in any desired proportions to obtain a concentrate composition. The concentrate composition, monochlorotrifluoropropene, carbon dioxide gas, and optionally other propellants are then filled into a pressure-resistant container to obtain the aerosol product.

[0045] As the propellant, in addition to monochlorotrifluoropropene and carbon dioxide gas, known propellants may be mixed to the extent that the above-mentioned effects are not impaired. It is preferable that flammable propellants are not included. Examples of propellants other than carbon dioxide gas include at least one selected from the group consisting of nitrogen gas, nitrous oxide gas, argon, helium, and compressed air. [Example]

[0046] The present invention will be specifically described below with reference to examples, but the present invention is not limited to the following examples.

[0047] <Examples 1 to 20 and Comparative Examples 1 to 5> The raw materials were mixed according to the formulations (mass %) shown in Tables 1 to 3 to prepare concentrate compositions that were milky white emulsions. Aerosol compositions were prepared by filling pressure-resistant containers (100 mL glass test bottles for aerosols) with the propellants and foaming agents according to the formulations in Tables 1 to 3. In Example 7, the concentrate compositions were mixed, and then the pH was adjusted as shown in Table 1. In addition, in Examples 17 to 20, lactic acid was blended in advance into the aqueous phase, which was then mixed with the oil phase and emulsified by heating to 80° C. The numerical values ​​relating to the formulations in the table indicate % by mass.

[0048] [Table 1] ND indicates below the detection limit.

[0049] [Table 2]

[0050] [Table 3]

[0051] The materials used are as follows: Dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl): Plandool-H (Nippon Fine Chemical Co., Ltd.) Hydroxypropyl ethyl cellulose: HECSE600 (Daicel FineChem Co., Ltd.) EDTA-2Na: Chelate 2B-SD (Chilest Co., Ltd.) Dimethicone: SH200C-3000cs (Dow Toray Industries, Inc.) HFO-1233zd: trans CF3CH=CClH (HFO-1233zdE) The following materials were used so that the content of each surfactant would be the value shown in the table. Stearoxypropyltrimonium chloride: Courtamine E-80K (Kao Corporation) Steartrimonium chloride: NIKKOL CA-2450 (Nikko Chemicals Co., Ltd.) Cetrimonium chloride: Courtamine 60W (Kao Corporation) Distearyldimonium chloride: Courtamine D86P (Kao Corporation) Lauryltrimonium chloride: Courtamine 24P (Kao Corporation) Steartrimonium chloride (Example 15): Courtamine 86W (Kao Corporation) Stearamidopropyl dimethylamine: Parner SDPA-4B (Miyoshi Oil & Fats Co., Ltd.) TEA-cocoyl glutamate: Aminosurfact ACMT-L (Asahi Kasei Finechem Co., Ltd.) (anionic surfactant) PEG-160 Sorbitan Triisostearate: Rheodol TW-IS399C (Flower Wang Co., Ltd. (nonionic surfactant)

[0052] <Examples 21 to 27> As in Example 1, the raw materials were mixed according to the formulation (mass %) shown in Table 4 to prepare a concentrate composition that was a milky white emulsion. Then, for each of the obtained concentrate compositions, a propellant and a foaming agent were added according to the formulations in Table 4 and filled into a pressure-resistant container (aerosol glass test bottle, 100 mL) to prepare an aerosol composition, and each aerosol product was obtained.

[0053] [Table 4]

[0054] The resulting aerosol products were evaluated as follows. The results are shown in Tables 1 to 3. Note that evaluation could not be carried out for Comparative Example 1 due to separation. Furthermore, stability evaluation could not be carried out for Comparative Example 2 due to the high viscosity of the concentrate composition, making it difficult to blend carbon dioxide gas.

[0055] (1) Foam quality The foam quality of the foamable aerosol composition was evaluated from the viewpoints of foam retention upon ejection and foam density. Specifically, 3 g of the foamable aerosol composition was discharged onto a flat plate at 25° C., and the foam retention and denseness were visually observed and evaluated according to the following criteria. ◎: The foam retention and richness are very good. Good: Good foam retention and richness. △: The foam retention and density are somewhat good. ▲: The foam retention and density are somewhat poor. ×: Poor foam retention and density.

[0056] (2) Feeling of use The feel of use of the foamable aerosol composition was evaluated in terms of the smoothness of the discharged foam. Specifically, 3 g of the foamable aerosol composition was ejected onto a flat plate at 25° C., and the foam was spread with the fingers and evaluated for smoothness according to the following criteria. ⊚: The foam does not disappear even when pressed and spread with fingers, and is very smooth. ◯: The foam does not disappear even when pressed and spread with fingers, and is smooth. △: The foam does not disappear even when pressed and spread with fingers, and is somewhat smooth. ▲: The foam does not disappear even when spread with fingers, and it is not very smooth. ×: The foam does not disappear when the fingers are pressed against it, and it is not smooth.

[0057] (3) Stability The foamable aerosol compositions were stored in thermostatic chambers at 5°C, 25°C and 45°C for about one week, and the stability was evaluated according to the following criteria. ○: No change was observed in any storage temperature range. △: Separation and precipitation were observed in any storage temperature range. ×: Separation and precipitation were observed in all storage temperature ranges.

Claims

1. 1. A foamable aerosol composition comprising: The foamable aerosol composition comprises a concentrate composition containing water, a cationic surfactant, a higher alcohol, and an oily component; Contains monochlorotrifluoropropene and carbon dioxide gas, The monochlorotrifluoropropene is trans CF ３ CH═CClH (1233zdE), cisCF ３ at least one selected from the group consisting of CH═CClH(1233zdZ); the mass ratio of the content of the higher alcohol to the content of the cationic surfactant in the concentrate composition (higher alcohol / cationic surfactant) is 1.05 to 25.00; the viscosity of the concentrate composition measured at a liquid temperature of 30°C using a BM type viscometer is 50,000 mPa s or less; A foamable aerosol composition, wherein the total content of anionic surfactants and nonionic surfactants in the foamable aerosol composition is 0.05 mass % or less.

2. 2. The foamable aerosol composition according to claim 1, wherein the cationic surfactant is at least one selected from the group consisting of quaternary ammonium salts and primary, secondary, and tertiary amines.

3. 3. The foamable aerosol composition according to claim 1, wherein the content of the cationic surfactant in the concentrate composition is 0.2% by mass to 5.0% by mass.

4. 4. The foamable aerosol composition according to claim 1, wherein the content of the higher alcohol in the concentrate composition is 1.0% by mass to 25.0% by mass.

5. 5. The foamable aerosol composition according to claim 1, wherein the concentrate composition has a chloride ion concentration of 1000 ppm or less by mass.

6. The content ratio of the cationic surfactant in the content ratio of the oily component in the concentrate composition 6. The foamable aerosol composition according to claim 1, wherein the mass ratio (oil component / cationic surfactant) to the total mass is 8.00 or less.

7. 7. The foamable aerosol composition according to any one of claims 1 to 6, wherein the mass ratio of the content of the higher alcohol to the content of the oily component in the concentrate composition (higher alcohol / oily component) is 0.30 to 10.

00.

8. 8. The foamable aerosol composition according to claim 1, wherein the higher alcohol is at least one selected from the group consisting of monohydric aliphatic alcohols having 8 to 30 carbon atoms.

9. 9. The foamable aerosol composition according to claim 1, wherein the oily component is at least one selected from the group consisting of ester compounds and hydrocarbon compounds.

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

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