CN108883029B - Aerosol cosmetic product - Google Patents

Abstract

The invention is an aerosol cosmetic (1) comprising an aerosol container (2) having a foam discharge member (3), and a foamable composition (21); the foam discharge member (3) is provided with a plurality of elongated discharge holes (33) formed around the center of the discharge surface (31), and a porous region in which at least 3 discharge holes (33) are independently present in the radial direction of the discharge surface (31) is formed over the entire region or a part of the circumferential direction of the discharge surface (31); the foamable composition (21) contains (A) a fatty acid or a salt thereof, (B) a pasty or solid oil (excluding the component (A)), (C) water, and (D) a propellant; the component (a) is contained in an amount of 1.1 to 15% by mass in terms of fatty acid in all the components of the foamable composition except the component (D), and the neutralization rate of the fatty acid by a base is 0.75 to 1 in terms of fatty acid; and the component (B) is contained in an amount of 0.01 to 0.8 mass% based on the total amount of the components of the foamable composition excluding the component (D).

Description

Aerosol cosmetic product

Technical Field

The present invention relates to an aerosol cosmetic product having an aerosol container provided with a foam discharge member and a foamable composition filled in the aerosol container.

Background

In a foaming composition such as a cleansing soap, a shampoo or a shaving foam which generates a foam (foam) in which a large amount of foam composed of a gas and a liquid film enclosing the gas is connected by a predetermined operation, a fat component such as a fatty acid or a metal soap such as a fatty acid soap is contained in the composition in order to form a creamy and elastic foam or to extend the time during which the foam exists.

Patent document 1 describes that a fatty acid salt is added to a cleansing composition as a foamable composition in addition to N-acylglycine or a salt thereof and an inorganic salt thereof.

Various foamable compositions have been proposed in which a liquid concentrate such as a detergent composition and a propellant are filled in an aerosol container and discharged as foam by a propellant gas, and for example, patent document 2 discloses a foamable aerosol product including a foamable composition containing a liquid concentrate and a liquefied gas, an aerosol container filled with the foamable composition, and a discharge member attached to the aerosol container.

The main object of the foamable aerosol product of patent document 2 is to form a light-weight foam by using, as a foamable composition, a composition obtained by blending an aqueous base liquid and a liquefied gas at a specific mass ratio, and using, as a discharge member, a member having a foaming space and a discharge surface covering the foaming space and having a plurality of discharge holes, thereby foaming the foamable composition injected into the foaming space in the foaming space to form a1 st foam, and joining the elongated 1 st foam having the plurality of discharge holes while involving air outside the discharge surface to form a2 nd foam.

Patent document 2 also describes that an aqueous stock solution contains a fatty acid soap or the like as an anionic surfactant.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 8-53693

Patent document 2: japanese patent laid-open publication No. 2013-241203

Patent document 3: US5813785 publication

Patent document 4: japanese Kokai publication Sho 59-190357

Disclosure of Invention

The invention provides an aerosol cosmetic, which comprises an aerosol container with a foam discharge component and a foaming composition filled in the aerosol container;

a foam discharge member having a discharge surface for discharging foam, a plurality of elongated discharge holes being formed around a central portion of the discharge surface, and a porous region being formed over all or a part of the discharge surface in a circumferential direction, the porous region having at least 3 discharge holes independently arranged in a radial direction from the central portion toward an outer peripheral portion of the discharge surface;

the foamable composition contains the following components (a) to (D):

(A) fatty acids or salts thereof

(B) Paste or solid oil (except for component (A))

(C) Water (W)

(D) A propellant;

the component (a) is contained in an amount of 1.1 to 15% by mass in terms of fatty acid in all components of the foamable composition except the component (D), and the neutralization degree of the fatty acid by a base is 0.75 to 1 in terms of fatty acid; and is

The component (B) is contained in an amount of 0.01 to 0.8 mass% based on the total components of the foamable composition excluding the component (D).

Here, the phrase "in all the components of the foamable composition excluding the component (D)" means that, when the foamable composition contains other components than the components (a) to (D), the total mass of all the components other than the component (D) contained in the foamable composition including the other components is included.

Drawings

Fig. 1 is a schematic perspective view showing one embodiment of the aerosol cosmetic of the present invention.

Fig. 2 is a vertical sectional view showing the foam discharge member and its vicinity of the aerosol cosmetic shown in fig. 1, fig. 2(a) is a view showing a state in which foam is discharged, and fig. 2(b) is a view showing a state in which discharge of foam is stopped.

Fig. 3 is a perspective view showing a state in which foam is discharged from the discharge surface of the foam discharge member of the aerosol cosmetic shown in fig. 1.

Fig. 4 is a plan view showing a discharge surface in which discharge holes are formed in the discharge surface of the foam discharge member for aerosol cosmetics shown in fig. 1.

FIG. 5 is a plan view of a discharge surface showing the shape and arrangement of discharge holes formed in the discharge surface of a foam discharge member used in a comparative example.

FIG. 6 is a plan view of a discharge surface showing the shape and arrangement of discharge holes formed in the discharge surface of a foam discharge member used in another comparative example.

Fig. 7 is a plan view of the discharge surface of the foam discharge member illustrating the relationship between the length and the width of the discharge hole formed in the discharge surface.

FIG. 8 is a plan view of a discharge surface of a foam discharge member having different shapes of discharge holes formed in the discharge surface.

Detailed Description

A cosmetic composition containing a fatty acid or a fatty acid soap has a problem that when discharged from an aerosol container, the foam formed is heavy and the skin of the foam feels hard.

Therefore, as described in patent document 2, it is also considered to improve the foam quality by discharging foams from a plurality of discharge ports and then joining the discharged foams to contain air therein, but foams produced from a cosmetic composition containing a fatty acid or a fatty acid soap are hard to join due to their hardness, and thus it is difficult to sufficiently improve the foam quality.

In addition, a cosmetic composition containing a fatty acid or a fatty acid soap has a problem that fragrance emission is weak even if a perfume is contained, and when a propellant having a smell such as dimethyl ether is used, the smell from the propellant is strongly perceived upon spraying, but no study has been made for these problems.

On the other hand, in patent documents 3 and 4, aerosol containers having discharge ports formed in various shapes have been proposed from the viewpoint of aesthetic quality, but no consideration has been made on controlling the quality of foam and the emission of fragrance.

The present invention is directed to providing an aerosol cosmetic that can solve the above-mentioned technical problems of the prior art.

The present inventors have found that by discharging a specific foamable composition containing a fatty acid or a salt thereof from an aerosol container having a foam discharge member having a discharge hole of a specific shape, a foam having a soft texture is produced, and an effect of improving the texture is exhibited, and further, fragrance emission is improved, and have completed the present invention.

The present invention will be described below based on preferred embodiments thereof.

As shown in fig. 1, the aerosol cosmetic according to one embodiment of the present invention includes an aerosol container 2 having a foam discharge member 3, and a foamable composition 21 filled in the aerosol container 2, and when a stem 22 of the aerosol container 2 (see fig. 2) is pressed, the foamable composition 21 is ejected to be a foam body 8 and discharged from a discharge surface 31 of the foam discharge member 3 (see fig. 3) as shown in fig. 3.

The foamable composition used in the present invention is a composition which forms foam by being discharged from an aerosol cosmetic, and contains (a) a fatty acid or a salt thereof, (B) a pasty or solid oil (excluding the component (a)), water, and (D) a propellant as essential components. Hereinafter, for convenience, a portion composed of all the components of the foamable composition excluding the component (D) will be referred to as "stock solution".

The "aerosol cosmetic product" refers to the entire cosmetic product including the aerosol container and the foamable composition filled in the aerosol container.

[ (A) component ]

In the present invention, (a) a fatty acid or a salt thereof is contained mainly from the viewpoint of improving the cleansing effect and the foam durability.

The fatty acid contained in the foamable composition has preferably 8 or more carbon atoms, more preferably 10 or more carbon atoms, even more preferably 12 or more carbon atoms, and preferably 24 or less carbon atoms, more preferably 22 or less carbon atoms, even more preferably 20 or less carbon atoms, from the viewpoint of improving the cleansing effect and the foam durability. Specifically, the number of carbon atoms of the fatty acid is preferably 8 or more and 24 or less, more preferably 10 or more and 22 or less, and still more preferably 12 or more and 20 or less.

Further, from the viewpoint of forming creamy foam, improving the foam durability, and suppressing the tight feeling after washing, the liquid soap preferably contains 1 or 2 or more selected from fatty acids having 8 to 15 carbon atoms and 1 or 2 or more selected from fatty acids having 16 to 24 carbon atoms, more preferably contains 1 or 2 or more selected from fatty acids having 10 to 15 carbon atoms and 1 or 2 or more selected from fatty acids having 16 to 22 carbon atoms, more preferably 1 or 2 or more fatty acids selected from fatty acids having 12 to 15 carbon atoms and 1 or 2 or more fatty acids selected from fatty acids having 16 to 20 carbon atoms, further, it is preferable that the fatty acid composition contains a fatty acid having 14 carbon atoms and a fatty acid having 18 carbon atoms.

The fatty acid may be either linear or branched, and in addition, the fatty acid may be either saturated or unsaturated. From the same viewpoint, a linear or branched saturated fatty acid is preferable, and a linear saturated fatty acid is more preferable.

Specifically, examples of the saturated fatty acids include caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, and behenic acid, and examples of the unsaturated fatty acids include oleic acid, linoleic acid, linolenic acid, and ricinoleic acid. The fatty acid may also contain a fatty acid derived from a plant such as coconut oil fatty acid or palm kernel oil fatty acid, which is a mixture of various fatty acids.

Examples of the salt of the fatty acid contained in the foamable composition include: inorganic salts such as sodium salt, potassium salt, calcium salt, magnesium salt, and aluminum salt; organic amine salts such as ammonium salt, monoethanolamine salt, diethanolamine salt and triethanolamine salt, and organic salts such as basic amino acid salts such as arginine salt and lysine salt. The fatty acid and the salt thereof may contain one kind alone or two or more kinds in combination. Among these, from the viewpoint of improving the solubility in water and the cleaning effect, 1 or 2 or more selected from sodium salt, potassium salt, calcium salt, magnesium salt, aluminum salt, ammonium salt, monoethanolamine salt, diethanolamine salt and triethanolamine salt are preferable, 1 or 2 or more selected from sodium salt, potassium salt, ammonium salt, monoethanolamine salt, diethanolamine salt and triethanolamine salt are more preferable, and 1 or 2 or more selected from sodium salt and potassium salt are preferable.

From the viewpoint of improving the cleansing effect and the foam durability, the content of the fatty acid or a salt thereof is necessarily 1.1% by mass or more and 15% by mass or less, preferably 2% by mass or more, more preferably 4% by mass or more, further preferably 5.5% by mass or more, and preferably 13% by mass or less, more preferably 11% by mass or less, further preferably 8% by mass or less in terms of fatty acid in the total amount of the stock solution. Specifically, it is preferably 2% by mass or more and 13% by mass or less, more preferably 4% by mass or more and 11% by mass or less, and still more preferably 5.5% by mass or more and 8% by mass or less.

The neutralization ratio of the fatty acid or a salt thereof with a base is 0.75 or more and 1 or less in terms of fatty acid, and is preferably 0.78 or more, more preferably 0.8 or more, and preferably 0.95 or less, more preferably 0.9 or less, and even more preferably 0.85 or less, from the viewpoint of satisfying all of good cleansing effect, foam durability, and wet feeling after washing. Specifically, the neutralization ratio is preferably 0.78 or more and 0.95 or less, more preferably 0.8 or more and 0.9 or less, and still more preferably 0.8 or more and 0.85 or less.

In order to achieve the above neutralization rate, the fatty acid may be neutralized with an alkali in the production step so as to have a predetermined neutralization rate, or a fatty acid salt and a fatty acid may be contained so as to fall within the above range. In addition, when the fatty acid is neutralized with a base in the production step, the fatty acid may be described as component (a1) and the base may be described as component (a 2).

Examples of the base for neutralizing the fatty acid with a base in the production step so as to have a predetermined neutralization rate include: hydroxides of alkali metal salts such as potassium hydroxide and sodium hydroxide; hydroxides of alkaline earth metals such as magnesium hydroxide and calcium hydroxide; alkanolamines such as 2-amino-2-methyl-1-propanol, monoethanolamine, diethanolamine, and triethanolamine; basic amino acids such as L-arginine, lysine and ornithine; ammonia, ammonium hydroxide, sodium bicarbonate, and the like. Among these, from the viewpoint of improving the solubility in water and the cleaning effect, 1 or 2 or more selected from sodium hydroxide, potassium hydroxide, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, aqueous ammonia, monoethanolamine, diethanolamine and triethanolamine are preferable, 1 or 2 or more selected from sodium hydroxide, potassium hydroxide, aqueous ammonia, monoethanolamine, diethanolamine and triethanolamine are more preferable, and 1 or 2 or more selected from sodium hydroxide and potassium hydroxide are preferable.

[ (B) component ]

In the present invention, the cream-like or solid-like oil (excluding the component (a)) is contained from the viewpoint of reducing the hardness of the foam and improving the foam durability.

In the present invention, the term "paste-like or solid-state" means an oil agent having a viscosity of 2000 mPas or more under the conditions of 25 ℃ and 1013.25hPa, and includes a completely solidified state in which the viscosity is too high to measure. The viscosity is measured, for example, using a type B viscometer (VIMETRON viscometer: model VS-A1 (manufactured by Shibaura System Co., Ltd.) under conditions of spindle number 3, 12rpm (revolutions per minute), and 30 seconds.

The viscosity of the cream-like or solid-like oil is preferably 4000mPa · s or more, more preferably 7000mPa · s or more, and even more preferably 10,000mPa · s or more, from the viewpoint of making the skin feel soft, and making the foam durability and the foam extensibility during use good.

Examples of the paste-like or solid-like oil include hydrocarbons having a viscosity of 2000mPa · s or more, ester oils, ether oils, waxes, higher alcohols, and the like, specifically, examples of the hydrocarbons include ozocerite, solid paraffin, polyethylene powder, microcrystalline wax, vaseline, and the like, examples of the ester oils include myristyl myristate, cetyl palmitate, decyl oleate, cetyl octanoate, and the like, examples of the waxes include beeswax, spermaceti, lanolin, and the like, and examples of the higher alcohols include linear saturated aliphatic alcohols having 10 to 24 carbon atoms, such as lauryl alcohol, cetyl alcohol, stearyl alcohol, and behenyl alcohol. These may contain 1 or 2 or more species.

From the viewpoint of reducing the hardness of the foam, making the skin feel soft, making the foam durability good, and giving a good cleaning effect, the content of the cream-like or solid-like oil in the total amount of the stock solution is necessarily 0.01% by mass or more and 0.8% by mass or less, preferably 0.05% by mass or more, more preferably 0.08% by mass or more, further preferably 0.1% by mass or more, and preferably 0.6% by mass or less, more preferably 0.5% by mass or less, further preferably 0.4% by mass or less. Specifically, the content is preferably 0.05% by mass or more and 0.6% by mass or less, more preferably 0.08% by mass or more and 0.5% by mass or less, and still more preferably 0.1% by mass or more and 0.4% by mass or less.

From the viewpoint of improving the cleansing effect and the foam durability and suppressing clogging, the ratio of the content of the cream-like or solid-like oil (excluding the component (a)) to the fatty acid equivalent amount of the fatty acid or the salt thereof is preferably 0.015 or more, more preferably 0.021 or more, even more preferably 0.025 or more, and preferably 0.15 or less, more preferably 0.08 or less, even more preferably 0.05 or less. Further, it is preferably 0.015 to 0.15, preferably 0.021 to 0.08, and more preferably 0.025 to 0.05.

[ (C) ingredient ]

The water used in the present invention is not particularly limited, and may contain purified water, ion-exchanged water, or the like. Water is contained as a solvent or dispersion medium for the components (a) to (D), and the component (E) and the component (F) as optional components, or other optional components.

From the viewpoint of improving the foamability and the dischargeability of the foam, the content of water is preferably 60% by mass or more, more preferably 65% by mass or more, and even more preferably 70% by mass or more, and is preferably 92% by mass or less, more preferably 90% by mass or less, and even more preferably 88% by mass or less, and specifically is preferably 60% by mass or more and 92% by mass or less, more preferably 65% by mass or more and 90% by mass or less, and even more preferably 70% by mass or more and 88% by mass or less, of the total amount of the stock solution.

[ (D) component ]

The propellant (D) used in the present invention may include conventional propellants for aerosol containers without particular limitation, and includes: liquefied Petroleum Gas (LPG) such as propane, n-butane, isobutane; ethers such as dimethyl ether, methyl ethyl ether, and diethyl ether; compressed gases such as carbon dioxide gas, nitrogen gas, and oxygen gas. These may contain 1 or 2 or more species.

Among these, from the viewpoint of improving the discharge properties of the foam and the foamability of the foam at low temperatures, 1 or 2 or more selected from propane, n-butane, isobutane, dimethyl ether, methylethyl ether, diethyl ether, carbon dioxide gas, nitrogen gas and oxygen gas are preferable, 1 or 2 or more selected from propane, n-butane, isobutane, dimethyl ether, methylethyl ether and diethyl ether are more preferable, and 1 or 2 or more selected from propane, n-butane and isobutane are even more preferable.

The internal pressure in the aerosol container immediately after production at 20 ℃ can be appropriately adjusted by the filling amount of the propellant, and from the viewpoint of forming creamy foam and uniformly discharging the creamy foam, the internal pressure is preferably 0.2MPa or more, more preferably 0.3MPa or more, still more preferably 0.35MPa or more, and further preferably 0.65MPa or less, more preferably 0.55MPa or less, and still more preferably 0.45MPa or less. Specifically, the internal pressure is preferably 0.2MPa to 0.65MPa, more preferably 0.3MPa to 0.55MPa, and still more preferably 0.35MPa to 0.45 MPa.

The foamable composition used in the present invention preferably contains, in addition to the components (a) to (D), either or both of (E) a polyol and (F) an N-acylamino acid salt.

[ (E) ingredient ]

The foamable composition containing the polyol (E) can form creamier foam, and can provide a soft feel to the skin and a better foam retention property. In addition, the skin smoothness during cleaning can be improved, and the wet feeling after washing can be improved. As the polyhydric alcohol, there may be mentioned: sugar alcohols such as sorbitol, maltitol, erythritol, xylitol, trehalose, and raffinose; and 2 to 4-membered polyhydric alcohols such as glycerin, diglycerin, 1, 3-propanediol (propanediol), butanediol, 1, 2-propanediol (propylene glycol), dipropylene glycol, isoprene glycol, hexylene glycol, octanediol, pentanediol, glycerin-2-ethylhexyl ether, polyethylene glycol, and polypropylene glycol. These may contain 1 or 2 or more species.

Among these, from the viewpoint of forming creamy foam, softening the skin feel of foam, and improving skin smoothness during cleansing and moisturized feel after washing, 1 or 2 or more selected from glycerin, diglycerin, polyethylene glycol, polypropylene glycol, sorbitol, maltitol, erythritol, xylitol and trehalose are preferable, 1 or 2 or more selected from glycerin, diglycerin, polyethylene glycol, sorbitol and maltitol are more preferable, 2 or more selected from glycerin, diglycerin, polyethylene glycol, sorbitol and maltitol are even more preferable, and sorbitol and maltitol are further preferably included.

From the viewpoint of forming a creamy foam, softening the skin feel, and improving the foam durability, the content of the polyol is preferably 1% by mass or more, more preferably 3% by mass or more, further preferably 4% by mass or more, and preferably 15% by mass or less, more preferably 10% by mass or less, further preferably 8% by mass or less, of the total amount of the stock solution. Specifically, the content is preferably 1% by mass or more and 15% by mass or less, more preferably 3% by mass or more and 10% by mass or less, and still more preferably 4% by mass or more and 8% by mass or less.

[ (F) ingredient ]

The foamable composition containing (F) an N-acylamino acid salt can form a creamier foam, make the skin feel soft, and make the foam durability better. In addition, the detergent can inhibit the feeling of tension and stickiness after washing.

Examples of the amino acid in the N-acyl amino acid include glutamic acid, aspartic acid, glycine, alanine, threonine, methylalanine, sarcosine, lysine, and arginine. These may contain 1 or 2 or more species. In addition, these amino acids include L, D or DL forms, but L forms are preferred in view of good stability of the cosmetic over time.

Among these, from the viewpoint of forming a creamy foam and suppressing a tight and sticky feeling after washing, an acidic amino acid or a neutral amino acid is preferable, and an acidic amino acid is more preferable. Specifically, from the same viewpoint, 1 or 2 or more selected from glutamic acid, aspartic acid, glycine and alanine are preferable, 1 or 2 selected from glutamic acid and glycine are more preferable, and glutamic acid is further preferably contained.

In addition, from the viewpoint of forming a creamy foam, improving the foam durability, and suppressing the tight feeling after washing, the number of carbon atoms of the acyl group in the N-acylamino acid is preferably 10 or more, more preferably 12 or more, and even more preferably 14 or more, and is preferably 24 or less, more preferably 22 or less, and even more preferably 20 or less. Specifically, the content is preferably 10 or more and 24 or less, more preferably 12 or more and 22 or less, and still more preferably 14 or more and 20 or less.

From the same viewpoint, the acyl group is preferably a saturated straight-chain or saturated branched-chain acyl group, and more preferably a saturated straight-chain acyl group.

Specifically, examples of the acyl group include acyl groups derived from fatty acids (including branched fatty acids) such as decanoyl, lauroyl, myristoyl, palmitoyl, stearoyl, oleoyl, linoleoyl, and these may be acyl groups derived from animals and plants, and examples of the acyl group include acyl groups derived from naturally-obtained mixed fatty acids such as coconut oil fatty acid, castor oil fatty acid, olive oil fatty acid, palm oil fatty acid, and the like.

Examples of the salt of an N-acylamino acid include: inorganic salts such as sodium salt, potassium salt, calcium salt, magnesium salt, and aluminum salt; organic salts such as organic amine salts such as ammonium salt, monoethanolamine salt, diethanolamine salt and triethanolamine salt, or basic amino acid salts such as arginine salt and lysine salt; 1 or 2 or more of these may be mixed and used. Among these, from the viewpoint of low skin irritation and suppression of tightening after washing, 1 or 2 or more selected from sodium salt, potassium salt, calcium salt, magnesium salt, aluminum salt, ammonium salt, monoethanolamine salt, diethanolamine salt and triethanolamine salt are preferable, 1 or 2 or more selected from sodium salt, potassium salt, ammonium salt, monoethanolamine salt, diethanolamine salt and triethanolamine salt are more preferable, and 1 or 2 selected from sodium salt and potassium salt are preferable.

Preferable specific examples of the N-acylamino acid salt include sodium salts, potassium salts, and triethanolamine salts of N-lauroyl glutamic acid, N-myristoyl glutamic acid, N-stearoyl glutamic acid, and N-cocoyl glutamic acid. Among these, from the viewpoint of forming a creamy foam, improving foam durability, and suppressing a tight and sticky feeling after washing, sodium N-stearoylglutamate is preferably contained, and examples of commercially available products include AMISOFT HS-11P and AMILITE GCK-12 (both manufactured by Ajinomoto health Supply Co., Ltd.). These may be contained alone in any one kind or in combination of two or more kinds.

From the viewpoint of forming a creamy foam, making the skin feel soft, and improving the foam durability, the content of the N-acylamino acid salt is preferably 0.1% by mass or more, more preferably 0.4% by mass or more, even more preferably 0.7% by mass or more, and preferably 5% by mass or less, more preferably 3% by mass or less, even more preferably 1.5% by mass or less, of the total amount of the stock solution. Specifically, it is preferably 0.1% by mass or more and 5% by mass or less, more preferably 0.4% by mass or more and 3% by mass or less, and still more preferably 0.7% by mass or more and 1.5% by mass or less.

In the foamable composition used in the present invention, any of the components generally used may be used in addition to the above components. These components may include, for example, anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, liquid oils other than the component (a), chelating agents, preservatives, perfumes, plant extracts, moisturizers, antioxidants, whitening agents, blood flow promoters, anti-inflammatory agents, bactericides, ultraviolet absorbers, colorants and the like within a range that does not impair the effects of the present invention. These agents are not limited to the use as the respective agents, and may be used in other applications depending on the purpose, for example, vitamins are used as an antioxidant, or are used together with other applications, for example, vitamins are used as a moisturizing agent and a preservative.

The foamable composition used in the present invention may contain 1 or 2 or more kinds of surfactants selected from anionic surfactants, cationic surfactants, nonionic surfactants, and amphoteric surfactants other than the components (a) and (F) from the viewpoint of increasing the amount of foam and improving the foam durability and the cleansing property. The surfactant is preferably a nonionic surfactant from the viewpoint of low irritation, excellent emulsion stability with the component (a) and the component (F), less sticky feeling, and more favorable extensibility on the skin.

The nonionic surfactant is not particularly limited, and examples thereof include glycerin fatty acid esters, polyglycerin fatty acid esters, sorbitan fatty acid esters, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ethers, fatty acid polyoxyethylene glycerides, polyether-modified silicones, and polyglycerin-modified silicones.

From the viewpoint of achieving a balance between the amount of foam, a good cleaning effect, and foam durability, the content of 1 or 2 or more selected from anionic surfactants, cationic surfactants, nonionic surfactants, and amphoteric surfactants other than the components (a) and (F) is preferably less than 5% by mass, more preferably 3% by mass or less, even more preferably 1% by mass or less, even more preferably 0.5% by mass or less, and even more preferably 0.1% by mass or less, of the total amount of the stock solution.

The foamable composition of the present invention may contain a liquid oil other than the component (a) from the viewpoint of suppressing clogging after discharge and improving the wet feeling after washing. The liquid oil in the present invention is an oil having a viscosity of less than 2000 mPas at 25 ℃ under 1013.25 hPa. The method of measuring the viscosity is the same as that of the paste or solid oil.

The liquid oil includes a hydrocarbon having a viscosity of less than 2000mPa · s, ester oil, higher alcohol, and the like, specifically, the hydrocarbon includes α -olefin oligomer, light isoparaffin, light liquid isoparaffin, liquid paraffin, and the ester oil includes: triglycerides such as tri (caprylic/capric) glyceride, tri (2-ethylhexanoic) glyceride, tricaprylin, triisostearin, tri (2-heptylundecanoic) glyceride, triolein, trilinolein, and tripalmitolein; isopropyl myristate, butyl myristate, isopropyl palmitate, butyl stearate, ethyl oleate, ethyl linoleate, isopropyl linoleate, cetyl octanoate, hexyl laurate, decyl myristate, decyl oleate, oleyl oleate, 2-ethylhexyl palmitate, 2-ethylhexyl stearate, 2-hexyldecyl stearate, isodecyl oleate, 2-octyldodecyl ricinoleate, ethyl isostearate, isopropyl isostearate, cetyl 2-ethylhexanoate, cetearyl 2-ethylhexanoate, hexyl isostearate, 2-octyldodecyl neopentanoate, 2-hexyldecyl 2-ethylhexanoate, isostearyl 2-ethylhexanoate, 2-ethylhexyl isononanoate, 2-ethylhexyl isopalmitate, 2-ethylhexyl palmitate, isopropyl linoleate, cetyl oleate, cetyl 2-octyldodecyl oleate, isopropyl myristate, decyl 2-octyldodecyl oleate, decyl 2-ethylhexanoate, isopropyl myristate, 2-ethylhexyl isononanoate, 2-ethylhexyl isopalmitate, isopropyl palmitate, isopropyl linoleate, isopropyl myristate, decyl oleate, isopropyl palmitate, ethyl stearate, isopropyl palmitate, ethyl stearate, isopropyl palmitate, and isopropyl palmitate, and isopropyl palmitate, Esters of fatty acids with monohydric alcohols such as 2-hexyldecyl isostearate, isostearyl isostearate, and 2-octyldodecyl isostearate; dibasic acid esters such as diisopropyl adipate, diisobutyl adipate, diethyl sebacate, diisopropyl sebacate, and 2-ethylhexyl sebacate; and esters of fatty acids and polyhydric alcohols such as ethylene glycol dioleate, propylene glycol dicaprate, and neopentyl glycol dicaprate. Examples of the higher alcohol include: straight-chain saturated alcohols having 6 to 10 carbon atoms such as octanoyl alcohol and octanol; straight-chain branched aliphatic alcohols or unsaturated aliphatic alcohols having 10 to 24 carbon atoms such as isostearyl alcohol and oleyl alcohol. These may contain 1 or 2 or more species.

From the viewpoint of achieving both softness to the skin and good foam durability, the content of the liquid oil is preferably less than 5% by mass, more preferably 3% by mass or less, even more preferably 1% by mass or less, even more preferably 0.5% by mass or less, and even more preferably 0.1% by mass or less, of the total amount of the stock solution.

The foamable composition used in the present invention may contain a coloring agent from the viewpoint of coloring the foam and further improving the aesthetic quality. The colorant is preferably a water-insoluble pigment from the viewpoint of preventing staining of the skin, clothes, and the like, and specifically, there may be mentioned: inorganic pigments such as tourmaline, chromium oxide, yellow 32, iron oxide black, red iron oxide, cobalt oxide, ultramarine, chromium hydroxide, titanium oxide, zinc oxide, talc, manganese violet, etc.; azo pigments such as azo lake pigments, insoluble azo pigments and condensed azo pigments, phthalocyanine pigments such as phthalocyanine blue and phthalocyanine green, and organic pigments such as quinacridone, isoindolinone and dioxazine. These may contain 1 or 2 or more species. Among these, from the viewpoint of sufficiently coloring the foam, organic pigments are preferable, and 1 or 2 or more selected from lycopene, carotene, lutein, chlorophyll, hellington's powder (hellindone Pink) (red No. 226), lake red (red nos. 203 and 204), lithol red, permanent orange, phthalocyanine blue, and hansa yellow are more preferable.

From the viewpoint of sufficiently coloring the foam and preventing coloring of the skin or clothes, the content of the colorant is preferably 0.001% by mass or more, more preferably 0.005% by mass or more, further preferably 0.01% by mass or more, and preferably 4% by mass or less, more preferably 2% by mass or less, further preferably 1% by mass or less, of the total amount of the stock solution. Specifically, it is preferably 0.001% by mass or more and 4% by mass or less, more preferably 0.005% by mass or more and 2% by mass or less, and still more preferably 0.01% by mass or more and 1% by mass or less.

The foamable composition of the present invention is a composition that forms foam immediately after discharge from an aerosol container, and the viscosity of the foam immediately after discharge under the conditions of 25 ℃ and 1013.25hPa is preferably 10,000mPa · s or more, more preferably 12,000mPa · s or more, even more preferably 14,000mPa · s or more, and preferably 50,000mPa · s or less, more preferably 35,000mPa · s or less, even more preferably 20,000mPa · s or less, from the viewpoint of softening the feel of the foam, improving the foam durability, and suppressing clogging. The viscosity of the foam was measured using a B-type viscometer (VISMETRON viscometer: model VS-A1, Shibaura System Co., Ltd.) at 12rpm (spindle 4) for 30 seconds.

[ production method ]

The aerosol cosmetic of the present invention may be produced by a known method, and for example, the cosmetic filled in an aerosol container provided with a foam discharge member may be produced by the following steps: step 1 of uniformly mixing components (a) to (C) other than component (D), and optionally component (E), component (F), or any other component to prepare a stock solution; step 2, filling the stock solution in the step 1 into an aerosol container; a step comprising a step 3 of pressure-filling a predetermined amount of the component (D) into an aerosol container in the step 3; and step 4, mounting a foam discharge member having a discharge surface on the upper part of the aerosol container.

In more detail, step 2 may include: a step 2a of filling the stock solution of the step 1 into an aerosol container; and thereafter step 2b of pinching the aerosol container with the aerosol valve.

In step 1, in order to improve the mixability of the components contained in the stock solution, the components are preferably mixed at an elevated temperature of 50 ℃ or higher, more preferably 55 ℃ or higher, and from the viewpoint of preventing evaporation or thermal aging of the components, the components are preferably mixed at an elevated temperature of 90 ℃ or lower, more preferably 85 ℃ or lower. When the heating is performed, it is preferable that the aerosol container in step 2 is filled after cooling to 30 ℃ or lower.

When the fatty acid is neutralized with a base to produce the fatty acid, it is preferable that step 1 includes: step 1a, mixing component (a2), component (C), and optionally component (E), component (F), or other optional water-soluble components at elevated temperature; step 1B, mixing component (a1), component (B), or any other oil-soluble component at elevated temperature; step 1c, adding the preparation of step 1b to the preparation of step 1a and uniformly mixing; and step 1d, cooling the preparation of step 1c to below 30 ℃. As described above, the component (a1) is a fatty acid, and the component (a2) is a base.

The heating conditions in step 1a and step 1b are not particularly limited as long as they are not lower than the dissolution temperature of component (a 1); from the viewpoint of dissolving the component (a) and preventing heat aging, it is preferably 70 ℃ or higher, more preferably 75 ℃ or higher, and preferably 90 ℃ or lower, more preferably 85 ℃ or lower.

[ Aerosol container ]

The aerosol container 2 of the aerosol cosmetic 1 according to the present embodiment is filled with the foamable composition 21 as described above.

Further, when describing the aerosol container 2 shown in fig. 1, the aerosol container 2 has the same configuration as a known aerosol container, and is configured as follows: the stem 22 connected to an internal valve (not shown) protrudes from the upper portion, and the stem 22 is pressed to open the valve, whereby the liquid (stock solution) filled in the interior is ejected together with the propellant.

The aerosol container 2 includes a foam discharge member 3 at an upper portion. The foam discharge member 3 in the aerosol cosmetic 1 according to the present embodiment includes: a connecting member 4 for detachably fixing the foam discharge member 3 to the aerosol container 2; a movable member 5 having a cylindrical connecting portion 51 fitted to the stem 22 of the aerosol container 2 to form a flow path that connects the flow path in the stem 22 to the foaming space 7 described below; and a discharge surface forming member 6 having a discharge surface 31 of the foam body 8 formed on the upper surface thereof. The discharge surface forming member 6 includes: a circular plate-shaped discharge surface forming portion 61 having a discharge surface 31 on which the foam body 8 is formed; and a cylindrical hanging portion 62 hanging downward from the peripheral edge portion of the discharge surface forming portion 61.

The connection member 4 has an annular 1 st fitting portion 41 detachably fitted to the bead portion 23 of the aerosol container 2, an engaging portion 42 engaging with a lower end portion of the cylindrical hanging portion 62 of the discharge surface forming member 6 on the outer side of the 1 st fitting portion 41, and a spring support portion 43 supporting a lower end of the coil spring 52 as energizing means on the inner side of the 1 st fitting portion 41. The movable member 5 includes: a circular bottom forming part 53 in plan view forming a foaming space 7 with the discharge surface forming part 61 of the discharge surface forming member 6; and a cylindrical hanging-down portion 54 hanging down from the peripheral edge portion of the bottom forming portion 53. The movable member 5 has the cylindrical connecting portion 51 at the center portion of the bottom forming portion 53 in a plan view, and an inlet 71 for the foamable composition 21 sprayed from the aerosol container 2 is formed at the center portion of the upper surface of the bottom forming portion 53. The movable member 5 is held so as to be movable up and down in a state where the cylindrical hanging-down portion 54 is supported by one or both of the cylindrical hanging-down portion 62 of the discharge surface forming member 6 and the cylindrical support portion 44 provided in the connecting member 4. Before and after the discharge operation, the movable member 5 is biased by biasing means such as a coil spring 52 as shown in fig. 2(b), and the upper surface of the bottom portion forming portion 53 is brought into contact with the lower surface of the discharge surface forming portion 61 of the discharge surface forming member 6. In this state, the stem 22 is not pressed down, and the foaming space 7 is not present. On the other hand, as shown in fig. 1, a pair of cutout portions 64, 64 are formed at two positions in the circumferential direction of the cylindrical hanging-down portion 62 of the discharge surface forming member 6, and the cylindrical hanging-down portion 54 of the movable member 5 and the push-down operation portion 56 provided outside the cylindrical hanging-down portion 62 of the discharge surface forming member 6 are integrated by the coupling portion 55 inserted through each cutout portion 64.

When the movable member 5 is pressed from the state shown in fig. 2(b) to the state shown in fig. 2(a) by pressing the pressing operation portion 56 from above, the stem 22 is pressed down to the cylindrical connection portion 51 of the movable member 5 in association therewith, and the foaming space 7 is formed between the lower surface of the discharge surface forming portion 61 of the discharge surface forming member 6 and the upper surface of the bottom portion forming portion 53 of the movable member 5. Thereby, the valve in the aerosol container 2 is opened, the foamable composition 21 is ejected from the aerosol container 2, and the foamable composition 21 ejected from the aerosol container 2 is introduced into the foaming space 7 from the introduction port 71, foams the foam in the foaming space 7, and is then ejected as a wall-shaped foam from the plurality of ejection holes 33 formed in the ejection surface forming portion 61. The discharged wall-like cells are integrated with air interposed therebetween to form a three-dimensional cell 8 as shown in fig. 3. According to the aerosol cosmetic 1 of the present embodiment, as shown in fig. 3, the foam formed by foaming the foamable composition 21 is discharged so that the foam 8 having a predetermined three-dimensional shape is formed on the discharge surface 31.

In the foam discharge surface 31 of the foam discharge member 3 of the aerosol cosmetic 1 according to the present embodiment, a plurality of elongated discharge holes 33 are formed around the center portion C of the discharge surface 31, and a porous region in which at least 3 discharge holes 33 are independently present in the radial direction from the center portion C toward the outer peripheral portion 32 of the discharge surface is formed along the circumferential direction a of the discharge surface 31. The center portion C of the discharge surface 31 is surrounded by the plurality of discharge holes 33, and preferably intersects with an extension 22C of the center axis of the stem 22 as shown in fig. 2 (a). In the porous region, at least 3 of the discharge holes 33 are required to be independently present in the radial direction from the center portion C toward the outer peripheral portion 32 of the discharge surface, and from the viewpoint of softening the skin and improving fragrance emission and foam durability, the number of the discharge holes is preferably 4 or more, more preferably 5 or more, and is preferably 9 or less, more preferably 8 or less, and even more preferably 7 or less. Specifically, the number of the cells is preferably 3 or more and 9 or less, more preferably 4 or more and 8 or less, and still more preferably 5 or more and 7 or less.

In fig. 4, when a line segment D connecting the center portion C and 1 point on the outer peripheral portion 32 is considered on the discharge surface 31, 5 discharge holes 33a intersect in the radial direction from the center portion C of the line segment D toward the outer peripheral portion 32 of the discharge surface in a state where the line segment D is located at the position of S, and 5 discharge holes 33a independently exist in the radial direction from the center portion toward the outer peripheral portion of the discharge surface at the position of S in the circumferential direction a of the discharge surface 31. In the present invention, in the case where the shorter length of the length from the end in the circumferential direction of the discharge hole to the line segment D (the length of the line segment drawn from the end in the circumferential direction of the discharge hole to the line segment D in the direction perpendicular to the line segment D) is longer than the width W3 of the discharge hole, the discharge hole existing on the straight line connecting the center portion and the 1 point on the outer circumference circle intersects with the line segment D.

When the line segment D is rotated clockwise from the position of S to the position of S1 around the center C, the line segment D intersects with at least 3 of the discharge holes 33 at any position between the positions of S and S1. This means that the range from the position of S to the position of S1 in the circumferential direction a of the discharge surface 31 is a porous region in which at least 3 discharge holes 33 are independently present in the radial direction from the center C toward the outer peripheral portion 32 of the discharge surface.

When the line segment D is rotated clockwise from the position of S1 to the position of S2 around the center C, the line segment D intersects with 3 or more discharge holes 33 at any position between the positions of S1 and S2. Therefore, the range from the position of S1 to the position of S2 in the circumferential direction a of the discharge surface 31 is also a porous region in which at least 3 discharge holes 33 are independently present in the radial direction from the center portion C toward the outer peripheral portion 32 of the discharge surface.

Similarly, when the line segment D is rotated clockwise from the position of S2 to the position of S3 and clockwise from the position of S3 to the position of S about the center C, the line segment D becomes a porous region in which at least 3 discharge holes 33 are independently present in the radial direction from the center C toward the outer peripheral portion 32 of the discharge surface at any position.

As described above, in the discharge surface 31 of the aerosol container 2 according to the present embodiment, the entire region in the circumferential direction a of the discharge surface 31 is a porous region in which at least 3 discharge holes 33 are independently present in the radial direction from the center portion C toward the outer peripheral portion 32 of the discharge surface.

In contrast, in the discharge surface 31 shown in fig. 5, 3 ranges indicated by R1 to R3 in the circumferential direction a of the discharge surface 31 are porous regions in which at least 3 discharge holes 33 are independently present in the radial direction from the central portion C toward the outer peripheral portion 32 of the discharge surface. In the discharge surface 31 shown in fig. 5, the angular ranges θ 1, θ 2, and θ 3 in which the porous regions R1 to R3 are present are 56 °, and the total value (θ 1+ θ 2+ θ 3) of the angular ranges in which 3 porous regions are present is 168 °. In the discharge surface 31 shown in fig. 5, non-porous regions N in which discharge holes are not present at all exist between adjacent porous regions in the circumferential direction a of the discharge surface 31.

In contrast, in the discharge surface 31 shown in fig. 4, the entire region of the discharge surface 31 in the circumferential direction a is a porous region, and the angular range in which the porous region exists is 360 °. In addition, the discharge surface 31 shown in fig. 4 does not have the non-porous region N.

From the viewpoint of making the skin feel soft, emitting fragrance, providing good foam durability, and achieving a satisfactory cleansing effect, the angular range in which the porous regions are present in the discharge surface 31 of the foam discharge member 3 used in the aerosol cosmetic of the present invention is preferably 135 ° or more, more preferably 180 ° or more, further preferably 225 ° or more, further preferably 270 ° or more, and further preferably 360 ° or less. Specifically, it is preferably 135 ° or more and 360 ° or less, more preferably 180 ° or more and 360 ° or less, further preferably 225 ° or more and 360 ° or less, further preferably 270 ° or more and 360 ° or less, and further preferably 360 °. As described above, the porous region is present in the angular range which is the total value of the rotation angles in the range in which the number of the discharge holes 33 intersecting the line segment D connecting the center portion C and the 1 point on the outer peripheral portion 32 is at least 3 when the line segment D is rotated clockwise about the center portion C.

In addition, from the viewpoint of making the skin feel soft, giving off fragrance, providing good foam durability, and achieving a good cleaning effect at the same time, the angular range in which the non-porous area exists in the discharge surface 31 of the foam discharge member 3 used in the present invention is preferably less than 135 °, more preferably less than 90 °, even more preferably less than 60 °, even more preferably less than 30 °, and even more preferably substantially none. The angular range in which the non-porous region exists is a total value of the rotation angles in the range in which the discharge hole 33 does not intersect the line segment D when the line segment D connecting the center portion C and the 1 point on the outer peripheral portion 32 is rotated clockwise about the center portion C.

In the discharge surface 31, the non-porous region and the region other than the porous region are regions in which 1 or 2 discharge holes 33 are independently present in the radial direction from the center portion C toward the outer peripheral portion 32 of the discharge surface, and from the above viewpoint, it is more preferable that 2 are present in the entire region.

As shown in fig. 4, the discharge hole 33 formed in the discharge surface 31 of the present embodiment has an arc shape. Since the discharge force of the foam is strong near the center portion C and the shape of the foam tends to be easily deformed, the discharge holes 33 are preferably arranged along the arc of an arbitrary circle centered on the center portion C of the discharge surface 31.

The size of the discharge hole 33 is preferably 10 times or more, more preferably 12 times or more, and even more preferably 15 times or more the width W3, and the length L3 is preferably 250 times or less, more preferably 180 times or less, and even more preferably 100 times or less, and even more preferably 50 times or less the width W3, from the viewpoint of making the foam feel soft to the skin and improving fragrance emission. Specifically, the ratio is preferably 10 times or more and 250 times or less, more preferably 12 times or more and 180 times or less, further preferably 15 times or more and 100 times or less, and further preferably 15 times or more and 50 times or less.

The discharge hole 33 may be rectangular as shown by the first discharge hole in fig. 8 or elliptical as shown by the second discharge hole, instead of being circular in shape, as long as it is elongated. The rectangular or elliptical discharge hole may have a partially curved shape, a bent shape, or a shape having concavities and convexities as shown in fig. 8. For example, as shown in fig. 8, there can be mentioned: a rectangular shape in which a part of a rectangle is bent like the discharge hole denoted by symbol three, an arc shape in which a part of an arc is bent like the discharge hole denoted by symbol four, an elliptical shape in which a part of an ellipse is recessed like the discharge hole denoted by symbol five, and the like. Since the discharge hole 33 tends to be easily clogged due to its complicated shape, the discharge hole is preferably shaped into any one of an arc shape, a rectangular shape, and an elliptical shape. The discharge holes 33 formed in the discharge surface may have different shapes in some of the discharge holes, or may have the same shape in all of the discharge holes.

As shown in fig. 7, the length L3 of the discharge hole 33 is a length a that is longer than any of the lengths of the inner periphery between the end portions (V, W) of the discharge hole 33. The end of the discharge hole 33 is an end in the longitudinal direction of the discharge hole, and for example, if the discharge hole is arc-shaped, the intersection point of a line segment passing a chord of the arc may be defined as the end V, W, if the discharge hole is rectangular, the intersection point of a line segment passing a long diagonal line may be defined as the end V, W, and if the discharge hole is oval, the intersection point of a line segment passing a long diameter may be defined as the end V, W. The width W3 of the discharge hole 33 is the length b of the longest portion among the lengths of 2 intersections (X-Y) between a line segment (VW) perpendicular to the line segment connecting the ends of the discharge hole 33 and the inner periphery of the discharge hole 33. The intersection X, Y is a point located on the different inner circumferential sides between the end portions (V, W).

As shown in the enlarged view of fig. 2(a), when the width of the discharge hole 33 is different between the upper surface side and the lower surface side of the discharge surface forming portion 61 forming the discharge surface 31, the narrower width of the upper surface side width W3 and the lower surface side width W3 is defined as the width W3 of the discharge hole 33.

In addition, the width W3 of the discharge hole 33 is preferably 0.1mm or more, more preferably 0.4mm or more, and preferably 1.5mm or less, more preferably 0.9mm or less, from the viewpoint of making the skin feel soft, emitting fragrance, and retaining foam. Specifically, the thickness is preferably 0.1mm or more and 1.5mm or less, and more preferably 0.4mm or more and 0.9mm or less.

From the same viewpoint, the length L3 of the discharge hole 33 is preferably 5mm or more, more preferably 6mm or more, and preferably 25mm or less, more preferably 18mm or less. Specifically, the thickness is preferably 5mm or more and 25mm or less, and more preferably 6mm or more and 18mm or less.

From the viewpoint of making the skin feel soft, improving the ejection property, and suppressing clogging, the number of the ejection holes 33 on the ejection surface 31 is preferably 7 or more, preferably 10 or more, and more preferably 15 or more, and is preferably 35 or less, more preferably 30 or less, and more preferably 25 or less. Specifically, the number of the discharge holes is preferably 7 or more and 35 or less, more preferably 10 or more and 30 or less, and still more preferably 15 or more and 25 or less.

The discharge holes 33 are preferably spaced from each other in the radial direction from the center portion C of the discharge surface 31 toward the outer peripheral portion 32 of the discharge surface 31 by 1.5 times or more, more preferably 2 times or more, and preferably 7.5 times or less, more preferably 6 times or less the width of the discharge hole 33 on the center portion C side, from the viewpoint of making the skin feel soft, emitting fragrance, and improving the foam durability. Specifically, the ratio is preferably 1.5 to 7.5 times, and more preferably 2 to 6 times.

The area of the discharge surface 31 is not particularly limited, but is preferably 500mm from the viewpoint of satisfying both of good discharge performance from the discharge holes and the number of discharge holes²Above, more preferably 1000mm²Above, and preferably 3000mm²Hereinafter, more preferably 1500mm²The following. Specifically, it is preferably 500mm²Above and 3000mm²Hereinafter, more preferably 1000mm²Above and 1500mm²The following.

The total area of the discharge holes present in the discharge surface 31 can be appropriately changed by the shape and number of the discharge holes and the internal pressure of the propellant, and is preferably 100mm from the viewpoint of good discharge performance, soft touch feeling to the skin, and good fragrance emission²Above, more preferably 150mm²Above, and preferably 300mm²Hereinafter, more preferably 250mm²The following. Specifically, it is preferably 100mm²Above and 300mm²Hereinafter, more preferably 150mm²Above and 250mm²The following.

From the viewpoint of making the skin feel soft and providing good fragrance emission, as shown in the enlarged view of fig. 2(a), the discharge holes 33 preferably have a plurality of discharge holes 33b inclined outward with respect to the vertical direction, and the inclination angle increases as the distance from the center C of the discharge surface 31 to the outer peripheral portion 32 side in the radial direction of the outer peripheral portion 32 of the discharge surface is closer to the outer peripheral portion 32 side, preferably at a position closer to the half of the radius of the outer peripheral portion 32 side, and the outer side surface d of the side surfaces of the discharge holes 33b is inclined outward with respect to the vertical direction. The inner side surface a of the side surfaces of the discharge hole 33b may be a vertical side surface, or may have a smaller inclination outward than the outer side surface d.

From the same viewpoint, the discharge hole 33 forming the porous region is preferably a portion from the center portion C of the discharge surface 31 toward the center portion side in the radial direction of the outer peripheral portion 32 of the discharge surface, preferably from a position 1/5 having a radius from the center portion C to a position half the radius, and the inner side surface a of the side surfaces of the discharge hole 33C is inclined inward with respect to the vertical direction. The outer side surface b of the side surfaces of the discharge hole 33c may be a vertical side surface, or may have an inward inclination smaller than the inner side surface a.

The present invention is not limited to the above embodiments, and can be modified as appropriate. For example, the foam discharge member 3 may have the same configuration as the foam discharge member shown in fig. 1 and 2 of patent document 2, except for the shape and arrangement of the discharge holes 33 formed in the discharge surface 31.

In addition, fig. 3 illustrates a case where the aerosol cosmetic of the present invention is formed into a foam body having a three-dimensional shape imitating a rose flower, but a foam body having a three-dimensional shape imitating a flower of another kind may be formed, or instead of the flower shape, a foam body having a geometric three-dimensional shape, or a foam body having a three-dimensional shape imitating a fruit of a plant, a vehicle, an entire or a part (face, etc.) of an animal, a person, or the like may be formed. From the viewpoint of good touch upon application, for example, good touch on the skin, good fragrance emission, good foam durability, and the like, the cosmetic composition is preferably used as a composition for external application to the skin, and can be used to act on the entire skin including the scalp, preferably the skin other than the scalp, and more preferably any of the face, body, hands and feet, and the like.

Further, as the application of the aerosol cosmetic of the present invention, in addition to a cleanser such as a face soap, a hand soap, a body soap, a dish detergent, a finger disinfectant, a hair cosmetic such as a hair conditioner, a hair fixative, a hair tonic, a skin cosmetic such as a lotion, an emulsion, a beauty lotion, or a shaving foam, the aerosol cosmetic is preferably used as a cleanser in terms of excellent cleansing effect.

The present invention further discloses the following (aerosol cosmetic, method for producing the same, etc.) with respect to the above embodiment.

＜1＞

An aerosol cosmetic comprising an aerosol container having a foam discharge member and a foamable composition filled in the aerosol container;

the foam discharge member has a discharge surface for discharging foam, a plurality of elongated discharge holes are formed around a central portion of the discharge surface, a porous region in which at least 3 discharge holes are independently formed in a radial direction from the central portion toward an outer peripheral portion of the discharge surface is formed over all or a part of a circumferential region of the discharge surface,

the foamable composition contains the following components (a) to (D):

(A) fatty acids or salts thereof

(B) Paste or solid oil (except for component (A))

(C) Water (W)

(D) A propellant;

the component (a) is contained in an amount of 1.1 to 15% by mass in terms of fatty acid in all components of the foamable composition except the component (D), and the neutralization degree of the fatty acid by a base is 0.75 to 1 in terms of fatty acid; and is

The component (B) is contained in an amount of 0.01 to 0.8 mass% based on the total components of the foamable composition excluding the component (D).

＜2＞

The aerosol cosmetic composition according to < 1 > above, wherein the fatty acid of the component (a) has preferably 8 or more, more preferably 10 or more, and still more preferably 12 or more, and preferably 24 or less, more preferably 22 or less, and still more preferably 20 or less, preferably 8 or more and 24 or less, more preferably 10 or more and 22 or less, and still more preferably 12 or more and 20 or less carbon atoms.

＜3＞

The aerosol cosmetic preparation according to the above < 1 > or < 2 >, wherein the component (A) is at least 1 or 2 selected from fatty acids having 8 to 15 carbon atoms and at least 1 or 2 selected from fatty acids having 16 to 24 carbon atoms.

＜4＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 3 >, wherein the fatty acid of the component (A) is a linear or branched saturated fatty acid.

＜5＞

The aerosol cosmetic preparation according to < 4 > above, wherein the saturated fatty acid is 1 or 2 or more selected from caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid and behenic acid.

＜6＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 3 >, wherein the fatty acid of the component (A) is a linear or branched unsaturated fatty acid.

＜7＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 6 >, wherein the salt of the fatty acid is 1 or 2 or more selected from sodium salt, potassium salt, calcium salt, magnesium salt, aluminum salt, ammonium salt, monoethanolamine salt, diethanolamine salt, triethanolamine salt, arginine salt and lysine salt.

＜8＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 7 >, wherein the salt of the fatty acid is 1 or 2 or more selected from sodium salt, potassium salt, calcium salt, magnesium salt, aluminum salt, ammonium salt, monoethanolamine salt, diethanolamine salt and triethanolamine salt.

＜9＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 8 >, wherein the salt of the fatty acid is 1 or 2 or more selected from sodium salt, potassium salt, ammonium salt, monoethanolamine salt, diethanolamine salt and triethanolamine salt.

＜10＞

The aerosol cosmetic composition according to any one of the above-mentioned < 1 > to < 9 >, wherein the content of the component (a) is preferably 2% by mass or more, more preferably 4% by mass or more, further preferably 5.5% by mass or more, and preferably 13% by mass or less, more preferably 11% by mass or less, further preferably 8% by mass or less in terms of fatty acid in all the components of the foamable composition except the component (D).

＜11＞

The aerosol cosmetic composition according to any one of the above items < 1 > to < 9 >, wherein the content of the component (a) is preferably 2% by mass or more and 13% by mass or less, more preferably 4% by mass or more and 11% by mass or less, and still more preferably 5.5% by mass or more and 8% by mass or less, in terms of fatty acid, in all the components of the foamable composition except the component (D).

＜12＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 11 >, wherein the neutralization degree of the fatty acid by alkali of the component (A) in terms of fatty acid is preferably 0.78 or more, more preferably 0.8 or more, and preferably 0.95 or less, more preferably 0.9 or less, and further preferably 0.85 or less.

＜13＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 12 >, wherein the neutralization degree of the fatty acid by alkali of the component (A) in terms of fatty acid is preferably 0.78 or more and 0.95 or less, more preferably 0.8 or more and 0.9 or less, and still more preferably 0.8 or more and 0.85 or less.

＜14＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 13 >, wherein the base to be neutralized so as to have a predetermined neutralization rate is 1 or 2 or more selected from the group consisting of potassium hydroxide, sodium hydroxide, magnesium hydroxide, calcium hydroxide, 2-amino-2-methyl-1-propanol, monoethanolamine, diethanolamine, triethanolamine, L-arginine, lysine, ornithine, aqueous ammonia, ammonium hydroxide and sodium hydrogencarbonate, and preferably 1 or 2 or more selected from the group consisting of sodium hydroxide, potassium hydroxide, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, aqueous ammonia, monoethanolamine, diethanolamine and triethanolamine.

＜15＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 14 >, wherein the component (B) is an oil agent having a viscosity of 2000 mPas or more at 25 ℃ under 1013.25hPa, and includes a completely solidified oil agent and an oil agent having an excessively high viscosity and being incapable of measuring the viscosity.

＜16＞

The aerosol cosmetic preparation according to any one of the above items < 1 > to < 15 >, wherein the viscosity of the component (B) is preferably 4000 mPas or more, more preferably 7000 mPas or more, and still more preferably 10,000 mPas or more.

＜17＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 16 >, wherein the component (B) is 1 or 2 or more selected from a hydrocarbon having a viscosity of 2000 mPas or more, an ester oil, an ether oil, a wax or a higher alcohol.

＜18＞

The aerosol cosmetic preparation according to any one of the above-mentioned items < 1 > to < 17 >, wherein the foamable composition contains 1 or 2 or more selected from ceresin wax, paraffin wax, polyethylene powder, microcrystalline wax, vaseline, myristyl myristate, cetyl palmitate, decyl oleate, cetyl octanoate, beeswax, spermaceti wax, lanolin and other waxes, lauryl alcohol, cetyl alcohol, stearyl alcohol and behenyl alcohol as the component (B).

＜19＞

The aerosol cosmetic composition according to any one of the above items < 1 > to < 17 >, wherein the content of the component (B) is preferably 0.05% by mass or more, more preferably 0.08% by mass or more, further preferably 0.1% by mass or more, and further preferably 0.6% by mass or less, more preferably 0.5% by mass or less, further preferably 0.4% by mass or less of the total amount of the foamable composition excluding the component (D).

＜20＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 19 >, wherein the content of the component (B) is preferably 0.05% by mass or more and 0.6% by mass or less, more preferably 0.08% by mass or more and 0.5% by mass or less, and still more preferably 0.1% by mass or more and 0.4% by mass or less of the total amount of the foamable composition excluding the component (D).

＜21＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 20 >, wherein a ratio of a content of the component (B) (excluding the component (a)) to a fatty acid-converted amount of the component (a) is preferably 0.015 or more, more preferably 0.021 or more, further preferably 0.025 or more, and further preferably 0.15 or less, more preferably 0.08 or less, further preferably 0.05 or less.

＜22＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 21 >, wherein a ratio of a content of the component (B) (excluding the component (a)) to a fatty acid-converted amount of the component (a) is preferably 0.015 or more and 0.15 or less, more preferably 0.021 or more and 0.08 or less, and further preferably 0.025 or more and 0.05 or less.

＜23＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 22 >, wherein the content of water in the component (C) is preferably 60% by mass or more, more preferably 65% by mass or more, further preferably 70% by mass or more, and further preferably 92% by mass or less, more preferably 90% by mass or less, further preferably 88% by mass or less, of all the components of the foamable composition other than the component (D).

＜24＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 23 >, wherein the content of water in the component (C) is preferably 60% by mass or more and 92% by mass or less, more preferably 65% by mass or more and 90% by mass or less, and further preferably 70% by mass or more and 88% by mass or less, of all the components of the foamable composition other than the component (D).

＜25＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 24 >, wherein the propellant of the component (D) is 1 or 2 or more selected from propane, n-butane, isobutane, dimethyl ether, methyl ethyl ether, diethyl ether, carbon dioxide gas, nitrogen gas and oxygen gas.

＜26＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 25 >, wherein the internal pressure in the aerosol container at 20 ℃ is preferably 0.2MPa or more, more preferably 0.3MPa or more, further preferably 0.35MPa or more, and further preferably 0.65MPa or less, more preferably 0.55MPa or less, further preferably 0.45MPa or less.

＜27＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 26 >, wherein the internal pressure in the aerosol container at 20 ℃ is preferably 0.2MPa or more and 0.65MPa or less, more preferably 0.3MPa or more and 0.55MPa or less, and still more preferably 0.35MPa or more and 0.45MPa or less.

＜28＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 26 >, wherein the foamable composition further comprises (E) a polyol.

＜29＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 28 >, wherein the component (E) is 1 or 2 or more selected from the group consisting of sorbitol, maltitol, erythritol, xylitol, trehalose, raffinose, glycerin, diglycerin, 1, 3-propanediol, butanediol, 1, 2-propanediol, dipropylene glycol, isoprene glycol, hexylene glycol, octanediol, pentanediol, glycerin-2-ethylhexyl ether, polyethylene glycol and polypropylene glycol.

＜30＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 29 >, wherein the component (E) is 1 or 2 or more selected from the group consisting of glycerin, diglycerin, polyethylene glycol, polypropylene glycol, sorbitol, maltitol, erythritol, xylitol and trehalose.

＜31＞

The aerosol cosmetic composition according to any one of the above < 1 > to < 30 >, wherein the content of the component (E) is preferably 1% by mass or more, more preferably 3% by mass or more, further preferably 4% by mass or more, and further preferably 15% by mass or less, more preferably 10% by mass or less, further preferably 8% by mass or less of all the components of the foamable composition other than the component (D).

＜32＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 31 >, wherein the content of the component (E) is preferably 1% by mass or more and 15% by mass or less, more preferably 3% by mass or more and 10% by mass or less, and further preferably 4% by mass or more and 8% by mass or less of the total components of the foamable composition other than the component (D).

＜33＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 32 >, wherein the foamable composition further comprises (F) an N-acylamino acid salt.

＜34＞

The aerosol cosmetic preparation of < 33 > above, wherein the N-acylamino acid of the component (F) is 1 or 2 or more selected from glutamic acid, aspartic acid, glycine, alanine, threonine, methylalanine, sarcosine, lysine and arginine, preferably 1 or 2 selected from glutamic acid and glycine.

＜35＞

The aerosol cosmetic preparation of < 33 > or < 34 > above, wherein the amino acid in the N-acylamino acid of the component (F) is L-form.

＜36＞

The aerosol cosmetic preparation of any one of the above-mentioned < 33 > to < 35 >, wherein the number of carbon atoms of the acyl group in the N-acylamino acid of the component (F) is preferably 10 or more, more preferably 12 or more, further preferably 14 or more, and further preferably 24 or less, more preferably 22 or less, further preferably 20 or less.

＜37＞

The aerosol cosmetic preparation of any one of the above < 33 > to < 36 >, wherein the number of carbon atoms of the acyl group in the N-acylamino acid of the component (F) is preferably 10 or more and 24 or less, more preferably 12 or more and 22 or less, and still more preferably 14 or more and 20 or less.

＜38＞

The aerosol cosmetic preparation of any one of the above-mentioned < 33 > to < 37 >, wherein the acyl group in the N-acylamino acid of the above-mentioned component (F) is a saturated straight-chain or saturated branched-chain acyl group.

＜39＞

The aerosol cosmetic preparation of any one of the above < 33 > to < 38 >, wherein the acyl group in the N-acylamino acid of the component (F) is 1 or 2 or more selected from the group consisting of decanoyl group, lauroyl group, myristoyl group, palmitoyl group, stearoyl group, oleoyl group and linoleoyl group.

＜40＞

The aerosol cosmetic preparation of any one of the above < 33 > to < 39 >, wherein the acyl group in the N-acylamino acid of the component (F) is 1 or 2 or more selected from coconut oil fatty acid, castor oil fatty acid, olive oil fatty acid and palm oil fatty acid.

＜41＞

The aerosol cosmetic preparation of any one of the above-mentioned < 33 > to < 40 >, wherein the salt of an amino acid in the N-acylamino acid of the component (F) is 1 or 2 or more selected from the group consisting of sodium salt, potassium salt, calcium salt, magnesium salt, aluminum salt, ammonium salt, monoethanolamine salt, diethanolamine salt, triethanolamine salt, arginine salt and lysine salt.

＜42＞

The aerosol cosmetic preparation of any one of the above-mentioned < 33 > to < 41 >, wherein the salt of an amino acid in the N-acylamino acid of the component (F) is 1 or 2 or more selected from the group consisting of sodium salt, potassium salt, calcium salt, magnesium salt, aluminum salt, ammonium salt, monoethanolamine salt, diethanolamine salt and triethanolamine salt.

＜43＞

The aerosol cosmetic preparation of any one of the above-mentioned < 33 > to < 42 >, wherein the N-acyl amino acid salt of the component (F) is 1 or 2 or more selected from the group consisting of sodium N-lauroyl glutamate, potassium N-lauroyl glutamate, triethanolamine N-lauroyl glutamate, sodium N-myristoyl glutamate, potassium N-myristoyl glutamate, triethanolamine N-myristoyl glutamate, sodium N-stearoyl glutamate, potassium N-stearoyl glutamate, triethanolamine N-stearoyl glutamate, sodium N-cocoyl glutamate, potassium N-cocoyl glutamate and triethanolamine N-cocoyl glutamate.

＜44＞

The aerosol cosmetic composition according to any one of the above items < 33 > to < 43 >, wherein the content of the component (F) is preferably 0.1% by mass or more, more preferably 0.4% by mass or more, further preferably 0.7% by mass or more, and further preferably 5% by mass or less, more preferably 3% by mass or less, further preferably 1.5% by mass or less of the total components of the foamable composition other than the component (D).

＜45＞

The aerosol cosmetic composition according to any one of the above items < 33 > to < 44 >, wherein the content of the component (F) is preferably 0.1% by mass or more and 5% by mass or less, more preferably 0.4% by mass or more and 3% by mass or less, and still more preferably 0.7% by mass or more and 1.5% by mass or less of the total components of the foamable composition other than the component (D).

＜46＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 45 >, wherein the foamable composition contains 1 or 2 or more kinds selected from anionic surfactants, cationic surfactants, nonionic surfactants and amphoteric surfactants other than the component (A) and the component (F).

＜47＞

The aerosol cosmetic preparation according to < 46 > above, wherein the total content of the anionic surfactant, the cationic surfactant, the nonionic surfactant, and the amphoteric surfactant other than the components (a) and (F) is preferably less than 5% by mass, more preferably 3% by mass or less, further preferably 1% by mass or less, further preferably 0.5% by mass or less, and further preferably 0.1% by mass or less, of all the components of the foamable composition other than the component (D).

＜48＞

The aerosol cosmetic preparation according to any one of the above items < 1 > to < 47 >, wherein the foamable composition contains a liquid oil other than the component (A).

＜49＞

The aerosol cosmetic composition according to < 48 > above, wherein 1 or 2 or more of a hydrocarbon having a viscosity of less than 2000 mPas, an ester oil, or a higher alcohol is contained as the liquid oil other than the component (A).

＜50＞

The aerosol cosmetic composition according to < 49 > above, wherein the hydrocarbon comprises 1 or 2 or more of an α -olefin oligomer, light isoparaffin, light liquid isoparaffin, and liquid paraffin.

＜51＞

The aerosol cosmetic composition according to < 49 > or < 50 > above, wherein the ester oil contains 1 or 2 or more selected from esters of fatty acids and monohydric alcohols, dibasic acid esters, and esters of fatty acids and polyhydric alcohols.

＜52＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 49 > to < 51 >, wherein the higher alcohol contains 1 or 2 or more selected from the group consisting of a linear saturated alcohol having 6 to 10 carbon atoms, a linear branched aliphatic alcohol having 10 to 24 carbon atoms and an unsaturated aliphatic alcohol having 10 to 24 carbon atoms.

＜53＞

The aerosol cosmetic composition according to any one of the above items < 49 > to < 52 >, wherein a content of the liquid oil other than the component (a) is preferably less than 5% by mass, more preferably 3% by mass or less, further preferably 1% by mass or less, further preferably 0.5% by mass or less, further preferably 0.1% by mass or less, of all the components of the foamable composition other than the component (D).

＜54＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 53 >, wherein the above-mentioned foamable composition contains a coloring agent.

＜55＞

The aerosol cosmetic composition according to < 54 > above, wherein the content of the coloring agent is preferably 0.001% by mass or more, more preferably 0.005% by mass or more, even more preferably 0.01% by mass or more, and further preferably 4% by mass or less, more preferably 2% by mass or less, even more preferably 1% by mass or less, of the total components of the foamable composition excluding the component (D).

＜56＞

The aerosol cosmetic composition according to the above < 54 > or < 55 >, wherein the content of the coloring agent is preferably 0.001% by mass or more and 4% by mass or less, more preferably 0.005% by mass or more and 2% by mass or less, and further preferably 0.01% by mass or more and 1% by mass or less of the total components of the foamable composition except the component (D).

＜57＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 56 >, wherein the viscosity of the foam at 25 ℃ under 1013.25hPa immediately after discharge from the aerosol container is preferably 10,000 mPas or more, more preferably 12,000 mPas or more, further preferably 14,000 mPas or more, further preferably 50,000 mPas or less, more preferably 35,000 mPas or less, further preferably 20,000 mPas or less.

＜58＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 57 >, wherein the foamable composition is ejected as foam by pressing a stem of the aerosol container and is discharged from a discharge surface of the foam discharge member.

＜59＞

The aerosol cosmetic according to < 58 > above, wherein the foam discharge member includes a pressing operation portion, and the stem is pressed by pressing the pressing operation portion.

＜60＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 59 >, wherein the porous region is preferably in which 4 or more, more preferably 5 or more, and preferably 9 or less, more preferably 8 or less, and even more preferably 7 or less, of the discharge holes are independently present in the radial direction.

＜61＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 60 >, wherein the porous region is preferably provided with 3 or more and 9 or less, more preferably 4 or more and 8 or less, and still more preferably 5 or more and 7 or less, of the discharge holes independently in the radial direction.

＜62＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 61 >, wherein the entire region of the discharge surface in the circumferential direction is the porous region.

＜63＞

The aerosol cosmetic composition according to any one of the above < 1 > to < 62 >, wherein the porous region is present in the discharge surface in an angular range of preferably 135 ° or more, more preferably 180 ° or more, further preferably 225 ° or more, further preferably 270 ° or more, and preferably 360 ° or less.

＜64＞

The aerosol cosmetic composition according to any one of the above < 1 > to < 63 >, wherein the porous region is present in the discharge surface in an angular range of preferably 135 ° or more and 360 ° or less, more preferably 180 ° or more and 360 ° or less, still more preferably 225 ° or more and 360 ° or less, yet more preferably 270 ° or more and 360 ° or less, and still more preferably 360 °.

＜65＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 64 >, wherein the discharge holes formed in the discharge surface, preferably in the porous region, have an arc shape and are arranged so as to follow an arc of an arbitrary circle having a center at a center of the discharge surface.

＜66＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 65 >, wherein the length L3 of the discharge hole formed in the discharge surface, preferably in the porous region, is preferably 10 times or more, more preferably 12 times or more, and even more preferably 15 times or more the width W3, and the length L3 is preferably 250 times or less, more preferably 180 times or less, even more preferably 100 times or less, and even more preferably 50 times or less the width W3.

＜67＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 66 >, wherein the length L3 of the discharge hole formed in the discharge surface, preferably in the porous region, is preferably 10 times or more and 250 times or less, more preferably 12 times or more and 180 times or less, further preferably 15 times or more and 100 times or less, further preferably 15 times or more and 50 times or less of the width W3.

＜68＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 67 >, wherein the discharge holes formed in the discharge surface, preferably in the porous region, have a shape of an elongated shape, a rectangular shape, or an elliptical shape, or may have a shape in which a part thereof is curved or bent, or a shape having irregularities.

＜69＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 68 >, wherein the width W3 of the discharge hole formed in the discharge surface, preferably in the porous region, is preferably 0.1mm or more, more preferably 0.4mm or more, and is preferably 1.5mm or less, more preferably 0.9mm or less.

＜70＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 69 >, wherein the width W3 of the discharge hole formed in the discharge surface, preferably in the porous region, is preferably 0.1mm or more and 1.5mm or less, and more preferably 0.4mm or more and 0.9mm or less.

＜71＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 70 >, wherein the length L3 of the discharge hole formed in the discharge surface, preferably in the porous region, is preferably 5mm or more, more preferably 6mm or more, and preferably 25mm or less, more preferably 18mm or less.

＜72＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 71 >, wherein the length L3 of the discharge hole formed in the discharge surface, preferably in the porous region, is preferably 5mm or more and 25mm or less, and more preferably 6mm or more and 18mm or less.

＜73＞

The aerosol cosmetic composition according to any one of the above < 1 > to < 72 >, wherein the number of the discharge holes on the discharge surface is preferably 7 or more, more preferably 10 or more, further preferably 15 or more, and further preferably 35 or less, more preferably 30 or less, further preferably 25 or less.

＜74＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 73 >, wherein the number of the discharge holes on the discharge surface is preferably 7 or more and 35 or less, more preferably 10 or more and 30 or less, and still more preferably 15 or more and 25 or less.

＜75＞

The aerosol cosmetic composition according to any one of the above < 1 > to < 74 >, wherein the interval between the discharge holes formed in the discharge surface, preferably in the porous region, in the radial direction is preferably 1.5 times or more, more preferably 2 times or more, and preferably 7.5 times or less, more preferably 6 times or less, the width of the discharge hole on the center portion side.

＜76＞

The aerosol cosmetic composition according to any one of the above < 1 > to < 75 >, wherein, of the discharge holes formed in the discharge surface, preferably in the porous region, the interval between the discharge holes adjacent in the radial direction is preferably 1.5 times or more and 7.5 times or less, more preferably 2 times or more and 6 times or less, the width of the discharge hole on the center portion side.

＜77＞

The aerosol cosmetic preparation according to any one of the above items < 1 > to < 76 >, wherein the area of the discharge surface is preferably 500mm²Above, more preferably 1000mm²The thickness is preferably 3000mm or more²Hereinafter, more preferably 1500mm²The following.

＜78＞

The aerosol cosmetic preparation according to any one of the above items < 1 > to < 77 >, wherein the area of the discharge surface is preferably 500mm²Above and 3000mm²Hereinafter, more preferably 1000mm²Above and 1500mm²The following.

＜79＞

The aerosol cosmetic preparation according to any one of the above items < 1 > to < 78 >, wherein the total area of the discharge holes present on the discharge surface is preferably 100mm²Above, more preferably 150mm²The thickness is preferably 300mm²Hereinafter, more preferably 250mm²The following.

＜80＞

The aerosol cosmetic preparation according to any one of the above items < 1 > to < 79 >, wherein the total area of the discharge holes present on the discharge surface is preferably 100mm²Above and 300mm²Hereinafter, more preferably 150mm²Above and 250mm²The following.

＜81＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 80 >, wherein the discharge holes formed in the discharge surface, preferably in the porous region, are inclined outward with respect to the vertical direction on the outer peripheral portion side, preferably on the outer peripheral portion side at a position closer to a half of the radius in the radial direction.

＜82＞

The aerosol cosmetic composition according to < 81 > above, which has a plurality of discharge holes having the outer side surface inclined outward with respect to the vertical direction, wherein the inclination angle increases as the outer peripheral portion approaches.

＜83＞

The aerosol cosmetic preparation according to < 81 > or < 82 > wherein the discharge hole having the outer side surface inclined outward with respect to the vertical direction has an inner side surface of the side surfaces of the discharge hole which is a vertical side surface or has an inclination smaller than that of the outer side surface.

＜84＞

The aerosol cosmetic preparation according to any one of the above < 1 > to < 83 >, wherein the discharge hole formed in the discharge surface, preferably in the porous region, has an inward inclination with respect to the vertical direction at a portion on the center side in the radial direction, preferably from a position of 1/5 in the radius from the center C to a position of half the radius.

＜85＞

The aerosol cosmetic preparation according to < 84 > above, wherein the discharge hole having the inner side surface inclined inward with respect to the vertical direction has an outer side surface of the side surfaces of the discharge hole which is vertical or has an inclination smaller than that of the inner side surface.

＜86＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 85 > which forms a foam imitating a three-dimensional shape such as a flower, a geometric three-dimensional shape, a fruit of a plant, a vehicle, an entire or a part (face, etc.) of an animal, a person, etc.

＜87＞

The aerosol cosmetic composition of any one of the above < 1 > to < 86 >, wherein the aerosol cosmetic composition is used as a cleanser, finger disinfectant, hair cosmetic, skin cosmetic, or shaving foam.

＜88＞

The aerosol cosmetic preparation as claimed in any one of the above items < 1 > to < 87 >, wherein the foam discharged in a wall shape from each of the plurality of discharge ports is integrated after discharge to form a foam having a predetermined three-dimensional shape.

＜89＞

The aerosol cosmetic preparation according to any one of the above-mentioned < 1 > to < 88 >, wherein the foamable composition further contains a perfume.

＜90＞

A three-dimensional foam and a method for providing fragrance, wherein the three-dimensional foam is formed using the aerosol cosmetic composition as described above < 89 > and fragrance is released.

＜91＞

A method for producing an aerosol cosmetic, which is the method for producing an aerosol cosmetic as defined in any one of the above-mentioned < 1 > to < 89 > and which comprises:

step 1 of mixing components (a) to (C) other than component (D) and optional components optionally blended to prepare a stock solution; step 2, filling the stock solution in the step 1 into an aerosol container; a step comprising a step 3 of pressure-filling a predetermined amount of the component (D) into an aerosol container in the step 3; and step 4, mounting a foam discharge member having a discharge surface on the upper part of the aerosol container.

＜92＞

The process for producing an aerosol cosmetic preparation according to the above < 91 >, wherein the mixing is carried out at a heating temperature of 50 ℃ or higher, preferably 55 ℃ or higher and 90 ℃ or lower, preferably 85 ℃ or lower in the above step 1.

＜93＞

The method for producing an aerosol cosmetic product according to the above < 91 > or < 92 >, wherein the step 1 comprises: step 1a, mixing the component (a2) as an alkali, the component (C), and an optional water-soluble component optionally blended, with heating; step 1B, mixing the component (a1) as a fatty acid, the component (B), or other optional oil-soluble components under heating; step 1c, adding the preparation of step 1b to the preparation of step 1a and uniformly mixing; and step 1d, cooling the preparation of step 1c to below 30 ℃.

＜94＞

The process for producing an aerosol cosmetic preparation according to < 93 > above, wherein the heating conditions in the step 1a and the step 1b are not less than the dissolution temperature of the component (A1), preferably not less than 70 ℃, more preferably not less than 75 ℃, and preferably not more than 90 ℃, more preferably not more than 85 ℃.

[ examples ]

The present invention will be further described with reference to the following examples, but the present invention is not limited to these examples.

Examples 1 to 7 and comparative examples 1 to 8

An aerosol container filled with a foamable composition containing a base liquid and a propellant having the formulation shown in table 1 was prepared by the following production method. In table 1, the content of each component relative to the total amount of the foamable composition is represented by mass%.

(production method)

(1) Heating potassium hydroxide of component (A2), component (C), component (E), component (F), disodium edetate, phenoxyethanol, and perfume to 80 deg.C, and mixing.

(2) The myristic acid and stearic acid as the component (a1) and the component (B) were heated to 80 ℃ and mixed.

(3) The preparation 2 obtained in the above (2) was added to the preparation 1 obtained in the above (1), and uniformly mixed.

(4) The stock solution was cooled to 30 ℃.

(5) The stock solution was filled into an aerosol can and the aerosol container was crimped with a valve for aerosol.

(6) A prescribed amount of component (D) is pressure-filled from a stylet into the aerosol container.

A foam discharge member having a discharge surface with discharge holes in the following pattern was attached to an aerosol container filled with a foamable composition, and a foam was discharged from the discharge surface.

In examples 1 to 6 and comparative examples 2 to 5, the foam discharge member shown in fig. 1 to 3 was used, and the foam discharge member (discharge hole No.1 in table 1) having the discharge holes 33 arranged as shown in fig. 4 was used.

In example 7, a foam discharge member (discharge hole No.2 in table 1) having a discharge surface formed with discharge holes 33 having the shape and arrangement shown in fig. 5 was used in place of the foam discharge member used in example 1.

In comparative example 1, a foam discharge member (discharge hole No.0 in Table 1) having a discharge surface formed with discharge holes 34 of the shape and arrangement shown in FIG. 6(a) was used in place of the foam discharge member used in example 1, in comparative example 6, a foam discharge member (discharge hole No.3 in Table 1) having discharge holes 33 formed in the discharge surface thereof in the shape and arrangement shown in FIG. 6(b) was used in place of the foam discharge member used in example 1, in comparative example 7, a foam discharge member (discharge hole No.4 in table 1) having a discharge surface formed with discharge holes 34 of the shape and arrangement shown in fig. 6(c) was used in place of the foam discharge member used in example 1, and in comparative example 8, a foam discharge member (discharge hole No.5 in table 1) having a discharge surface formed with discharge holes 34 of the shape and arrangement shown in fig. 6(d) was used in place of the foam discharge member used in example 1.

The total area of the discharge holes in the discharge surface of the foam discharge member used in example 1 was set to about 185mm²The discharge surfaces of the foam discharge members used in comparative examples 1, 6 to 8 were also prepared so that the total area of the discharge holes was substantially the same. Specifically, the spit used in comparative example 1The discharge hole of the discharge surface was set to a diameter of about 15.2 mm. The discharge surface used in comparative example 7 had a discharge hole diameter of about 3.8mm, and the pitches P1 and P2 between the discharge holes were both set to about 9 mm. The discharge holes of the discharge surface used in comparative example 8 had a diameter of about 3.1mm, and the pitch between the discharge holes was set to 9 mm.

[ examples 8 to 14]

Aerosol containers filled with the foamable compositions having the formulations shown in table 2 were prepared in the same manner as in example 1, except that the components and amounts shown in table 2 were used as the component (B). The component (B) is a solid oil which is completely solidified at 25 ℃. In table 2, the content of each component in the foamable composition relative to the total amount of the foamable composition is represented by mass%.

[ evaluation of softness of touch and good fragrance emission degree ]

The sensory evaluation was performed by 5 professional sensory examiners for 1) softness of skin touch and 2) fragrance emission quality. The evaluation results for each evaluation item are shown in table 1 and table 2.

Examples 1 to 7 and comparative examples 2 to 8 were evaluated by comparing the samples of comparative example 1 with each other for "softness of touch of skin" and "degree of good fragrance emission" when the discharged foam (1g) was applied to the back of the hand, and by the following evaluation criteria. The results show the average score of 5 persons (rounded at the 2 nd position after the decimal point) in tables 1 and 2.

[ evaluation standards ]

And 5, dividing: very good

And 4, dividing: preference is given to

And 3, dividing: not judged (same as in comparative example 1)

And 2, dividing: is poor

1 minute: very poor

[ evaluation of cleaning Effect ]

The simulated sebum colored with iron oxide was applied to the back of the hand, and after 30 minutes, the back of the hand was massaged with 1g of a sample at a constant force and speed for 1 minute, and then washed with water. The cleaning effect after rinsing was evaluated by dividing the standard into 4 grades, with 4 being the state where the coloration by the simulated sebum was substantially faded and 1 being the state where the coloration by the simulated sebum was not substantially faded. The results are shown in tables 1 and 2 as the average score of 5 persons (rounded off at the 2 nd position after the decimal point).

[ evaluation of foam durability (shape Retention) ]

After the foam was discharged, the foam was left to stand for 3 minutes to visually observe the change in shape of the foam, and the foam durability (shape retention) was evaluated based on the following evaluation criteria. The evaluation results are shown in tables 1 and 2.

[ evaluation standards ]

A: maintaining substantially the same shape as that at the time of discharge.

B: the shape of the bubble end is rounded compared to the discharge time, but the overall shape is maintained.

C: the shape of the entire device is deformed as compared with the discharge.

X: the shape of the discharge tube was not maintained at all.

﹡ 1: the foam was soft and the foam body immediately deformed after discharge, and the shape change could not be evaluated.

﹡ 2: since the foam is too hard, the foam is not sufficiently discharged at the time of discharge, and a certain shape is not formed every discharge.

[ evaluation of the degree of difficulty of clogging ]

After the foam was discharged, the foam on the discharge surface was removed and left to stand indoors. After 1 day, whether or not the discharge hole was clogged was checked, and if there was clogging, whether or not the discharge performance was affected was also examined. The evaluation results based on the following evaluation criteria are shown in tables 1 and 2.

[ evaluation standards ]

A: no clogging occurred.

B: clogging was observed, but ejection from all ejection holes was observed.

X: clogging was observed, and a discharge hole which was not discharged was observed.

[ hardness of foam ]

The foam was discharged and filled into a 100mL beaker up to 90mL, and the viscosity of the foam was measured using a type B viscometer (VISMETRON viscometer: model VS-A1, manufactured by Shibaura System Co., Ltd.) under conditions of No.4 spindle, 12rpm (revolutions per minute) and 30 seconds.

[ neutralization Rate ]

The neutralization degree was calculated from the saponification value X of each fatty acid by the following formula.

Neutralization ratio (%). potassium hydroxide content/Σ ((X/1000) × fatty acid content)

As is clear from the results shown in table 1: according to the aerosol cosmetics of examples 1 to 7, foam having a soft touch to the skin can be formed as compared with comparative example 1 or comparative examples 6 to 8, which do not have a porous region in which at least 3 discharge holes are independently present in the radial direction from the center portion toward the outer peripheral portion of the discharge surface. In addition, the aerosol cosmetics of examples 1 to 7 were excellent in convenience of use, good fragrance emission, cleaning effect, and clogging difficulty.

Specifically, the comparison between example 1 and comparative examples 2 and 5 shows that: by containing a specific amount of component (a) in the cosmetic, the hardness of the foam is reduced, the softness of the skin touch, the fragrance emission, and the cleansing effect are improved, the foam durability is good, and clogging is also suppressed.

In addition, from the comparison between example 1 and comparative examples 3 and 4, it is clear that: by containing a specific amount of component (B) in the cosmetic, the skin feel is soft, the fragrance is emitted, the cleansing effect is improved, and the foam durability is improved.

In addition, the results shown in table 2 show that: according to the aerosol cosmetics of examples 8 to 14, foam having a soft touch to the skin can be formed as compared with comparative example 1 or comparative examples 6 to 8 which do not have a porous region in which at least 3 discharge holes are independently present in the radial direction from the center portion toward the outer peripheral portion of the discharge surface. In addition, the aerosol cosmetics of examples 8 to 14 were excellent in convenience of use, good fragrance emission, cleaning effect, and clogging resistance.

The following describes formulation examples of the present invention. Which exerts the same effect as the present invention.

Formulation example 1 (detergent)

(production method)

1. All the components except for the liquefied petroleum gas were mixed at 80 ℃ and stirred until they became uniform to prepare a stock solution, which was then cooled to 30 ℃.

2. The stock solution was filled into an aerosol can and the aerosol container was crimped with a valve for aerosol.

3. A prescribed amount of liquefied petroleum gas is pressure-filled into the aerosol container from the stem of the pipe.

Formulation example 2 (detergent)

(production method)

1. All the components except for the liquefied petroleum gas were mixed at 80 ℃ and stirred until they became uniform to prepare a stock solution, which was then cooled to 30 ℃.

2. The stock solution was filled into an aerosol can and the aerosol container was crimped with a valve for aerosol.

3. A prescribed amount of liquefied petroleum gas is pressure-filled into the aerosol container from a stem of a pipe.

The fragrances used in the examples, comparative examples, and formulation examples were the following floral formulated fragrance formulations. In addition, 1% DPG (Dipropylene glycol), 5% DPG, and 10% DPG described in the component names represent: the active ingredient content of the perfume was 1 mass%, 5 mass%, and 10 mass%, respectively.

Floral system blended spice formula

(availability in industry)

According to the aerosol cosmetic of the present invention, the foamable composition having a specific composition containing the components (a) to (D) is discharged from the aerosol container provided with the foam discharge member, and the relatively hard wall-like foam is discharged from each of the elongated discharge ports of the discharge surface provided with the foam discharge member, but a plurality of discharge holes are independently present in the radial direction from the center of the discharge surface toward the outer peripheral portion of the discharge surface, and the foam discharged from the discharge ports is foamed in a wall-like shape, whereby the foam is formed by integrating a state in which air is introduced between the walls or a state in which the foam density is low.

Therefore, the foam formed from the aerosol cosmetic of the present invention is creamy and elastic foam having soft touch to the skin. The term "creamy" means a state in which the foam is dense and smooth. If the foam formed is creamy, the following advantages are obtained: the foam can be kept for a long time without breaking, so that the foam can be tightly adhered to the skin, and the smearing effect is durable. Further, if the foam formed is elastic, the following advantages are obtained: the foam is cushioned and the hands do not directly contact the skin, so that friction between the hands and the face is small, and the skin can be continuously massaged for a long time without applying a load to the skin, and the makeup effect is improved.

In particular, in the case of aerosol cosmetics as a cleanser, the foam is retained for a long time without being broken, so that the skin can be reliably cleansed, and the foam serves as a cushion so that the hands do not directly contact the skin, so that friction between the hands and the face is small, a burden is not applied to the skin, and a mild cleansing feeling can be obtained.

Further, the foaming agent composition is foamed in a wall shape, and thus the following advantages are obtained: the surface area of the foam can be increased, and when the foaming agent composition contains a perfume, the fragrance emission of the perfume is increased, and the problem that odor from the propellant is strongly perceived at the time of spraying is eliminated.

Further, the aerosol cosmetic of the present invention also exhibits the following effects.

It is also easy to form foam having a high aesthetic quality such as foam having a three-dimensional shape imitating a flower or foam having a geometric three-dimensional shape.

Dripping of foam is less likely to occur.

The discharge hole is less clogged.

A sufficient amount of foam can be discharged by only performing an operation such as pressing of the pressing operation portion for a short time.

Claims (25)

1. An aerosol cosmetic composition, wherein,

the aerosol cosmetic comprises an aerosol container having a foam discharge member and a foamable composition filled in the aerosol container,

the foam discharge member has a discharge surface for discharging foam, a plurality of elongated discharge holes are formed around a central portion of the discharge surface, a porous region in which at least 3 discharge holes are independently present in a radial direction from the central portion toward an outer peripheral portion of the discharge surface is formed over all or a part of a circumferential region of the discharge surface, and an angular range in which the porous region is present in the discharge surface is 135 DEG or more and 360 DEG or less,

the foamable composition contains the following components (A) to (E):

(A) a fatty acid or a salt thereof, which is 1 or 2 or more selected from fatty acids having 8 to 15 carbon atoms and 1 or 2 or more selected from fatty acids having 16 to 24 carbon atoms;

(B) a paste or solid oil, excluding component (A);

(C) water;

(D) a propellant;

(E) a polyhydric alcohol,

the component (A) is contained in an amount of 1.1 to 15% by mass in terms of fatty acid in all components of the foamable composition except the component (D), and the neutralization degree of the fatty acid by a base is 0.75 to 1 in terms of fatty acid; and is

The component (B) is contained in an amount of 0.01 to 0.8 mass% based on the total components of the foamable composition excluding the component (D),

the content of the component (E) is 1 mass% or more and 15 mass% or less in all the components of the foamable composition other than the component (D).

2. The aerosol cosmetic preparation according to claim 1,

the foamable composition further contains an N-acylamino acid salt as the component (F).

3. The aerosol cosmetic preparation according to claim 1,

the ratio of the content of the component (B) to the fatty acid-converted amount of the component (A) is 0.015 to 0.15.

4. The aerosol cosmetic according to any one of claims 1 to 3,

the size of the spitting hole is as follows: the length is 5mm to 25mm, and the width is 0.1mm to 1.5 mm.

5. The aerosol cosmetic according to any one of claims 1 to 3,

the length of the discharge hole is 10 times or more and 250 times or less the width of the discharge hole.

6. The aerosol cosmetic according to any one of claims 1 to 3,

the discharge hole has an arc shape, and is arranged along an arc of an arbitrary circle having a center at a center of the discharge surface.

7. The aerosol cosmetic according to any one of claims 1 to 3,

the distance between the discharge holes adjacent in the radial direction is 1.5 times or more and 7.5 times or less the width of the discharge hole on the center portion side.

8. The aerosol cosmetic according to any one of claims 1 to 3,

the number of discharge holes on the discharge surface is 7 to 35 inclusive.

9. The aerosol cosmetic according to any one of claims 1 to 3,

in the porous region, the discharge holes are independently present in the radial direction in an amount of 3 or more and 9 or less.

10. The aerosol cosmetic according to any one of claims 1 to 3,

the total area of the discharge hole is 100mm²Above and 300mm²The following.

11. The aerosol cosmetic according to any one of claims 1 to 3,

the aerosol cosmetic is used as a cleanser, finger disinfectant, hair cosmetic, skin cosmetic, or shaving foam.

12. The aerosol cosmetic according to any one of claims 1 to 3,

the aerosol cosmetic is used as a cleaning agent.

13. The aerosol cosmetic according to any one of claims 1 to 3,

the foam discharged from each of the plurality of discharge ports in a wall shape is integrated after discharge to form a foam having a predetermined three-dimensional shape.

14. The aerosol cosmetic according to any one of claims 1 to 3,

the component (B) is an oil agent having a viscosity of 2000 mPas or more at 25 ℃ under 1013.25 hPa.

15. The aerosol cosmetic according to any one of claims 1 to 3,

the component (B) is 1 or 2 or more selected from hydrocarbons having a viscosity of 2000 mPas or more, ester oils, ether oils, waxes or higher alcohols.

16. The aerosol cosmetic according to any one of claims 1 to 3,

the component (B) contains 1 or 2 or more selected from ceresin, paraffin wax, polyethylene powder, microcrystalline wax, vaseline, myristyl myristate, cetyl palmitate, decyl oleate, cetyl octanoate, beeswax, spermaceti, lanolin, lauryl alcohol, cetyl alcohol, stearyl alcohol and behenyl alcohol.

17. The aerosol cosmetic according to any one of claims 1 to 3,

the propellant of the component (D) is 1 or more than 2 selected from propane, n-butane, isobutane, dimethyl ether, methyl ethyl ether, diethyl ether, carbon dioxide gas, nitrogen gas and oxygen gas.

18. The aerosol cosmetic according to any one of claims 1 to 3,

the pressure in the aerosol container is below 0.65 MPa.

19. The aerosol cosmetic according to any one of claims 1 to 3,

the component (E) is 1 or more than 2 selected from sorbitol, maltitol, erythritol, xylitol, trehalose, raffinose, glycerol, diglycerol, 1, 3-propanediol, butanediol, 1, 2-propanediol, dipropylene glycol, isoprene glycol, hexanediol, octanediol, pentanediol, glycerol-2-ethylhexyl ether, polyethylene glycol and polypropylene glycol.

20. The aerosol cosmetic according to any one of claims 1 to 3,

the foamable composition further contains an N-acylamino acid salt as a component (F), wherein 1 or 2 or more amino acids selected from the group consisting of glutamic acid, aspartic acid, glycine, alanine, threonine, methylalanine, sarcosine, lysine and arginine are contained in the N-acylamino acid of the component (F).

21. The aerosol cosmetic according to any one of claims 1 to 3,

the foamable composition further contains an N-acylamino acid salt as the component (F),

the content of the component (F) is 0.1 mass% or more and 5 mass% or less in all the components of the foamable composition other than the component (D).

22. The aerosol cosmetic according to any one of claims 1 to 3,

the foamable composition contains a liquid oil other than the component (A).

23. The aerosol cosmetic product of claim 22,

the content of the liquid oil other than the component (a) is less than 5% by mass in the entire components of the foamable composition other than the component (D).

24. The aerosol cosmetic according to any one of claims 1 to 3,

the foamable composition further contains a perfume.

25. A method for providing a three-dimensional foam and fragrance, wherein,

forming a three-dimensionally shaped foam using the aerosol cosmetic composition of claim 24, and releasing fragrance.

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