JP2014129306A - Aerosol cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aerosol cosmetic which generates a lot of fine foams, accelerates percutaneous absorption of carbon dioxide gas and has an excellent use feeling without stickiness or roughness.SOLUTION: There is provided an aerosol cosmetic which comprises: a stock solution which contains the following components (A), (B), (C) and (D): (A) 0.01 to 10 mass% of a silicon oxide having an average particle diameter of 0.25 to 20 μm or (meth)acrylic acid or a salt thereof/an alkyl (meth)acrylate crosspolymer, (B) 0.1 to 15 mass% of one or two or more selected from a nonionic surfactant having an HLB of 12 to 18 and an anionic surfactant, (C) a water-soluble thickener and (D) water and has a viscosity at 25°C of 500 to 20000 mPa s; and (E) carbon dioxide gas.

Description

  The present invention relates to an aerosol cosmetic.

  Skin troubles such as bears and dullness are caused by a decrease in blood flow. To improve these problems, cosmetics containing active ingredients, and cosmetics that use thermal effects, massage effects, and carbon dioxide effects are available. It is being considered. For example, Patent Documents 1 and 2 describe foamy cosmetics containing carbon dioxide.

JP 2005-506325 A JP 2011-93877 A

  These cosmetics are intended to improve foam quality and stability, and need to be further improved in order to bring out the effect of carbon dioxide by using carbon dioxide as a propellant. . In addition, there were problems in terms of feeling of use such as stickiness and roughness.

  The present inventors have found that by using a specific powder in combination with a surfactant, a water-soluble thickener, and carbon dioxide gas, an aerosol cosmetic that solves the above problems can be obtained.

The present invention includes the following components (A), (B), (C) and (D):
(A) Silicon oxide having an average particle size of 0.25 to 20 μm, or (meth) acrylic acid or a salt thereof. (Meth) acrylic acid alkyl crosspolymer 0.01 to 10% by mass,
(B) One or more surfactants selected from nonionic surfactants and anionic surfactants of HLB 12-18, 0.1-15% by mass,
(C) a water-soluble thickener,
(D) It relates to an aerosol cosmetic containing water and having a viscosity at 25 ° C. of 500 to 20000 mPa · s, and (E) carbon dioxide.

  The aerosol cosmetic composition of the present invention generates and sustains a large amount of bubbles of carbon dioxide gas having a diameter of 100 μm or less, promotes percutaneous absorption of carbon dioxide gas, and has no stickiness or roughness, and has an excellent feeling of use. Is.

Component (A) used in the present invention is one or more powders selected from silicon oxide, (meth) acrylic acid or a salt thereof, and (meth) acrylic acid alkyl crosspolymer. Component (A) has an average particle diameter of 0.25 to 20 μm, and preferably has a particle size of 0.25 to 10 μm from the viewpoint of giving a better feeling to use. These powders do not dissolve in water, alcohol, oil or the like. The shape may be either spherical or plate-like. There is no restriction | limiting also in the internal structure of powder, Any things, such as porous, hollow, and nonporous, can be used. From the point of touch, it is preferably spherical.
In the present invention, the average particle size is measured with a laser diffraction scattering type particle size distribution measuring device LA-920 / HORIBA / median size.

  Silicon oxide is not limited as long as it is usually used in cosmetics, and modified powder whose surface is treated with a compound or the like may be used, but hydrophobizing treatment using silicone oil, fatty acid metal salt, etc. Those having no surface treatment and those having a hydrophilic surface are preferred. Specifically, commercially available products include Admafine SO-C1 (Admatex), NP-100, NP-200 (AGC S-Tech), Sun Lovely LSF-C (AGC S-Tech). . A slurry that is easy to disperse in water is preferable, and Sunlably LSF-C is more preferable.

  Among the components (A), (meth) acrylic acid or a salt thereof / (meth) acrylic acid alkyl crosspolymer means at least one monomer selected from (meth) acrylic acid or a salt thereof and (meth) acrylic It is a crosslinked (meth) acrylic acid ester resin powder obtained by copolymerizing at least one monomer selected from acid alkyl esters. In addition, (meth) acrylic acid is a general term for acrylic acid and methacrylic acid, and (meth) acrylic acid alkyl is a general term for alkyl acrylate and alkyl methacrylate.

  The (meth) acrylic acid alkyl ester monomer is preferably a (meth) acrylic acid alkyl ester having 1 to 18 carbon atoms in the alkyl group. Specifically, methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate , Stearyl (meth) acrylate and the like. Among these, alkyl (meth) acrylates having 4 to 18 carbon atoms in the alkyl group such as butyl (meth) acrylate, lauryl (meth) acrylate, and stearyl (meth) acrylate are more preferable. You may use these in combination of multiple types. The proportion of the (meth) acrylic acid alkyl ester monomer in all monomer components (including the crosslinkable monomer described below) is preferably 30 to 98 mass%, more preferably 50 to 85 mass%. preferable.

  On the other hand, the proportion of (meth) acrylic acid or a salt thereof in all the monomer components is 0.1 from the viewpoint of suppressing the aggregation of the powder and obtaining a good powder feel (smoothness, smooth feeling). -30 mass% is preferable and 1-10 mass% is more preferable.

It is preferable that some of the carboxyl groups contained in the cross polymer are neutralized. The cross polymer can make the polymer surface hydrophilic by neutralizing the carboxyl group contained in the cross polymer, and can improve the dispersibility in water and the generation of small bubbles.
Furthermore, from the viewpoint of further improving the smoothness and smoothness of the powder, the degree of neutralization is preferably 1 to 30%, more preferably 1 to 20%. Here, the degree of neutralization represents the ratio of the number of moles of the added base to the number of moles of the carboxyl group of the monomer having a carboxyl group, expressed as a percentage.
The base for neutralization is preferably sodium hydroxide, potassium hydroxide, basic amino acid or the like, but amines, alkanolamines and ammonia can also be used.

  The monomer component preferably contains a crosslinkable monomer having two or more vinyl groups as a crosslinking agent. Such crosslinkable monomers include ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, decaethylene glycol di (meth) acrylate, pentadecaethylene glycol di ( (Meth) acrylate, 1,3-butylene glycol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, glycerin di (meth) acrylate, (meth) Allyl acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, diethylene glycol di (meth) acrylate phthalate, caprolactone-modified dipentaerythritol hexa (meth) Acrylate, caprolactone-modified hydroxypivalate ester neopentyl glycol di (meth) acrylate, polyester (meth) acrylate, urethane (meth) acrylate and other (meth) acrylate crosslinkable monomers, divinylbenzene, divinylnaphthalene and these And aromatic divinyl monomers such as derivatives thereof. These may be used alone or in combination of two or more. Among these crosslinkable monomers, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, 1,3-butylene glycol di (meth) acrylate, 1,4- (Poly) alkylene glycol di (meth) acrylate such as butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, caprolactone-modified dipentaerythritol hexa (meth) acrylate, caprolactone-modified hydroxypivalate ester neo Pentyl glycol di (meth) acrylate and polyester (meth) acrylate are more preferred because of low skin irritation. These crosslinkable monomers are preferably used in an amount of 3 to 50% by mass in all monomer components.

  As the monomer component, in addition to the above (meth) acrylic acid alkyl ester monomer, acrylic acid or a salt thereof and a crosslinkable monomer, other monomers copolymerizable with these may be copolymerized. . Examples of other monomers include styrene, (meth) acrylonitrile, (meth) acrylamide, vinyl acetate, vinyl pyrrolidone and the like.

The cross polymer is an aqueous suspension of a monomer component containing, for example, the above (meth) acrylic acid alkyl ester monomer, (meth) acrylic acid and a crosslinkable monomer, using a dispersant, a polymerization initiator, or the like. It can be obtained by polymerization by polymerization, emulsion polymerization, seed polymerization, dispersion polymerization or the like. Among these, the aqueous suspension polymerization method is preferable from the viewpoint of easily obtaining the resin powder industrially.
The cross polymer can be produced, for example, by the method described in JP-A-2006-8659.

Component (A) is one or two or more powders selected from silicon oxide, or (meth) acrylic acid or a salt thereof / (meth) acrylic acid alkyl crosspolymer, and (meth) acrylic acid or its Salt / (meth) acrylic acid alkyl crosspolymers are preferred in terms of feel.
By using the powder as described above, in particular, a powder having a hydrophilic surface, a bubble generating nucleus is formed on the powder surface, and a large number of small bubbles having a diameter of 100 μm or less can be generated.

  Component (A) can be used singly or in combination of two or more, and the content is 0.01% by mass or more in the stock solution from the viewpoint of continuously generating bubbles having a diameter of 100 μm or less. 05 mass% or more is preferable and 0.1 mass% or more is more preferable. And from the point which suppresses the stickiness at the time of application | coating and after application | coating, it is 10 mass% or less, 5 mass% or less is preferable and 3 mass% or less is more preferable. Moreover, content of a component (A) is 0.01-10 mass% in a stock solution, 0.05-5 mass% is preferable, and 0.1-3 mass% is still more preferable.

Component (B) used in the present invention is (B1) one or more surfactants selected from nonionic surfactants and anionic surfactants of HLB 12-18.
(B1) Nonionic surfactant is HLB12-18, and the thing of HLB13-15 is preferable.
Here, HLB (hydrophilic-lipophilic balance <Hydrophilic-Lypophilic Balance>) indicates the molecular weight of the hydrophilic group portion in the total molecular weight of the surfactant. For nonionic surfactants, Griffin ( Griffin).
The HLB of the mixed surfactant composed of two or more kinds of nonionic surfactants is obtained as follows. The HLB of the mixed surfactant is obtained by averaging the HLB values of the nonionic surfactants based on the blending ratio.

Mixed HLB = Σ (HLBx × Wx) / ΣWx
HLBx indicates the HLB value of the nonionic surfactant X.
Wx represents the mass (g) of the nonionic surfactant X having a value of HLBx.

Examples of the nonionic surfactant of component (B1) include sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, propylene glycol fatty acid ester, polyethylene glycol fatty acid ester, sucrose fatty acid ester, polyoxyethylene fatty acid ester, poly Oxyethylene sorbitan fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene propylene glycol fatty acid ester, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene Hardened castor oil fatty acid ester, polyoxyethylene phytostanol ether, polyoxyethylene phytostero Examples include ether, polyoxyethylene cholestanol ether, polyoxyethylene cholesteryl ether, polyoxyalkylene-modified organopolysiloxane, polyoxyalkylene / alkyl co-modified organopolysiloxane, and one or more selected from these are used. be able to. It is preferable to contain the nonionic surfactant of a component (B1) from a viewpoint of the melt | dissolution amount to the stock solution of a carbon dioxide gas, solubility promotion, and the foamability at the time of application | coating.
Of these, polyoxyethylene alkyl ether and polyoxyethylene hydrogenated castor oil are preferable from the viewpoint of foaming properties when discharging carbon dioxide gas.

Examples of (B2) anionic surfactants include fatty acids having 12 to 22 carbon atoms such as sodium laurate, potassium palmitate and arginine stearate or salts thereof; carbon numbers 12 such as sodium lauryl sulfate and potassium lauryl sulfate. Alkyl sulfate ester of -22 or a salt thereof; Alkyl ether sulfate ester of C12-22 such as polyoxyethylene lauryl sulfate triethanolamine or a salt thereof; N-C12 acyl sarcosine such as sodium lauroyl sarcosine or Alkyl phosphoric acid having 12 to 22 carbon atoms such as sodium monostearyl phosphate or a salt thereof; polyoxyethylene oleyl ether sodium phosphate, polyoxyethylene stearyl ether sodium phosphate, polyoxyethylene lauryl ether Polyoxyethylene C12-22 alkyl ether phosphoric acid such as sodium phosphate or a salt thereof; C12-24 dialkylsulfosuccinic acid such as sodium di-2-ethylhexylsulfosuccinate or a salt thereof; N-stearoyl-N N-alkyloylmethyltaurine having 12 to 22 carbon atoms such as sodium methyltaurine or a salt thereof, sodium dilauroylglutamate, monosodium N-lauroylglutamate, N-stearoyl-L-sodium glutamate, N-stearoyl-L-glutamic acid Examples include arginine, N-stearoyl sodium glutamate, N-myristoyl-L-glutamic acid sodium, etc., N-carbon number 12-22 acyl glutamic acid or a salt thereof, and one or more selected from these. It is possible to have. The anionic surfactant of component (B2) is preferably contained from the viewpoint of the amount of carbon dioxide dissolved in the stock solution, acceleration of dissolution rate, and emulsification stability of the component (F) oil agent described later in the cosmetic.
Of these, sodium polyoxyethylene lauryl ether phosphate is preferred from the viewpoint of the amount of carbon dioxide dissolved in the stock solution and the emulsion stability of the component (F) oil described later in the cosmetic.

  As the component (B), it is preferable to use a combination of (B1) a nonionic surfactant and (B2) an anionic surfactant from the viewpoint of increasing the amount of foam having a diameter of 100 μm or less. The mass ratio (B1) / (B2) of the components (B1) and (B2) is preferably 1 or more from the viewpoint of increasing the amount of bubbles having a diameter of 100 μm or less. From the viewpoint of increasing the amount of bubbles having a diameter of 100 μm or less, 100 or less is preferable, 50 or less is more preferable, 10 or less is further preferable, and 5 or less is even more preferable. Moreover, 1-100 are preferable, as for mass ratio (B1) / (B2) of a component (B1) and (B2), 1-50 are more preferable, 1-10 are more preferable, and 1-5 are still more preferable. .

  The content of the component (B) is 0.1% by mass or more and 0.5% by mass or more in the stock solution from the viewpoint of improving the solubility of carbon dioxide gas in the stock solution and increasing the amount of bubbles of 100 μm or less. Is preferred. And from the point which suppresses the stickiness at the time of application | coating and after application | coating, it is 15 mass% or less, 5 mass% or less is preferable and 1 mass% or less is still more preferable. Moreover, content of a component (B) is 0.1-15 mass% in a stock solution, 0.5-5 mass% is preferable, and 0.5-1 mass% is still more preferable.

The water-soluble thickener of component (C) may be any one used in ordinary cosmetics, such as carrageenan, dextrin, methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, polyvinyl alcohol, polyacrylic acid, Examples include polymethacrylic acid, carboxyvinyl polymer, (acrylic acid / alkyl acrylate (C10-30)) copolymer, xanthan gum, carboxymethyl chitin, and chitosan. These have the effect of suppressing the rapid generation of bubbles during ejection and sustaining the generation of bubbles of 100 μm or less after coating. Among these, carboxyvinyl polymer, acrylic acid, from the viewpoint of providing the persistence of the generation of bubbles of 100 μm or less after coating, the emulsification stability of the component (F) described later, and the feeling of smoothness at the time of coating and after coating. / Alkyl acrylate copolymer is preferable, and (acrylic acid / alkyl acrylate (C10-30)) copolymer is more preferable.
Here, the (acrylic acid / alkyl acrylate (C10-30)) copolymer is a copolymer of C10-30 alkyl acrylic acid and acrylic acid, methacrylic acid or a lower alkyl ester thereof, Cross-linked with allyl ether or allyl ether of pentaerythritol, and commercially available products such as Pemlen TR-1, Pemlen TR-2, Carbopol ETD2020, Carbopol 1342, Carbopol 1382 (Lubricol Advanced Materials) are used. be able to.

  In addition, acid-type water-soluble thickeners such as polyacrylic acid, carboxyvinyl polymer, and (acrylic acid / alkyl acrylate (C10-30)) copolymer use potassium hydroxide as a neutralizing agent, It is preferably used as a water-dispersible salt.

  Component (C) can be used singly or in combination of two or more in the stock solution in terms of the sustainability of foam generation with a diameter of 100 μm or less after application, the feeling of use, and the ease of application. 0.1 mass% or more is preferable, 0.25 mass% or more is more preferable, and 0.3 mass% or more is still more preferable. And from the point of use feeling, 1 mass% or less is preferable, 0.6 mass% or less is more preferable, and 0.5 mass% or less is still more preferable. Moreover, 0.1-1 mass% is preferable in a stock solution, as for content of a component (C), 0.25-0.6 mass% is more preferable, and 0.3-0.5 mass% is still more preferable.

  The water of component (D) used in the present invention functions as a solvent and makes up the remainder of the other components. The content of the component (D) water is preferably 48% by mass or more, more preferably 60% by mass or more, still more preferably 65% by mass or more, and 99.79% by mass in the stock solution from the viewpoint of emulsion stability. The following is preferable, 93 mass% or less is more preferable, and 75 mass% or less is still more preferable. Moreover, 48-99.79 mass% is preferable in a stock solution, as for content of water, 60-93 mass% is more preferable, and 65-75 mass% is still more preferable.

The aerosol cosmetic composition of the present invention can further contain (F) an oil in the stock solution. The oil agent of component (F) has higher solubility of carbon dioxide than water, and can contain higher concentration of carbon dioxide in the stock solution by containing the oil. The oil of component (F) is preferably liquid at 25 ° C., specifically, hydrocarbons such as paraffin, squalane, squalene; camellia oil, jojoba oil, olive oil, macadamia nut oil, avocado oil, olive oil, etc. Natural animal and vegetable oils mainly composed of triglycerides; glycerol monostearate, glycerol distearate, glycerol monooleate, isopropyl palmitate, isopropyl stearate, butyl stearate, isopropyl myristate, neopentyl glycol dicaprate, phthalic acid Diethyl, myristyl lactate, diisopropyl adipate, cetyl myristate, cetyl lactate, 1-isostearoyl-3-myristoyl glycerol, cetyl 2-ethylhexanoate, 2-ethyl palmitate Sil, myristate-2-octyldodecyl, neopentyl glycol di-2-ethylhexanoate, -2-octyldodecyl oleate, glycerol triisostearate, di-paramethoxycinnamic acid-glyceryl mono-2-ethylhexanoate, Ester oil such as isotridecyl isononanoate, diisostearyl malate, glyceryl monoisostearate monomyristate, N-lauroyl-L-glutamate di (cholesteryl octyldodecyl), alkyl benzoate (alkyl group having 12 to 15 carbon atoms) Ether oils such as alkyl-1,3-dimethylbutyl ether; higher fatty acids such as stearic acid, palmitic acid and oleic acid; and essential oils such as eucalyptus oil and mint oil.
Of these, ester oils are preferred, and glyceryl distearate, neopentyl glycol dicaprate, and alkyl benzoate are more preferred from the viewpoint of high moist feeling after application.

  Component (F) can be used singly or in combination of two or more, and the content is from the solubility of carbon dioxide gas, emulsification stability, and the point of imparting a moist feeling to the skin during and after application. In the stock solution, 0.1% by mass or more is preferable, 1% by mass or more is more preferable, and 5% by mass or more is more preferable. And the stickiness of the skin at the time of application | coating and after application | coating is suppressed, 20 mass% or less is preferable in an undiluted | stock solution from the point of emulsification stability, 15 mass% or less is more preferable, and 10 mass% or less is still more preferable. Moreover, 0.1-20 mass% is preferable in a stock solution, as for content of a component (F), 1-15 mass% is more preferable, and 5-10 mass% is still more preferable.

  In the aerosol cosmetics of the present invention, the stock solution further contains components used in normal cosmetics, such as ethanol, polyhydric alcohols, preservatives, antioxidants, dyes, pH adjusters, fragrances, ultraviolet absorbers, moisturizing agents. Agents, blood circulation promoters, cooling agents, antiperspirants, bactericides, whitening agents, anti-inflammatory agents, skin activators, and the like.

In the aerosol cosmetic composition of the present invention, the stock solution is prepared by mixing the components (A) to (D) and other components. The stock solution has a viscosity at 25 ° C. of 500 mPa · s or more from the viewpoint of suppressing the rapid generation of bubbles during discharge, holding carbon dioxide gas, and continuously generating bubbles with a diameter of 100 μm or less after coating. 1000 mPa · s or more, preferably 1500 mPa · s or more, more preferably 20000 mPa · s or less, preferably 10,000 mPa · s or less, and more preferably 7000 mPa · s or less. The stock solution has a viscosity at 25 ° C. of 500 to 20000 mPa · s, preferably 1000 to 10000 mPa · s, and more preferably 1500 to 7000 mPa · s.
Here, the viscosity is a value measured with a BM viscometer (manufactured by Toki Sangyo Co., Ltd.) (NO 4, 12 rpm, 1 minute).

The aerosol cosmetic composition of the present invention can be produced by filling a pressure-resistant container with the above-described stock solution and (E) carbon dioxide gas. The form of the injection is preferably a foam type that is discharged in the form of foam.
The mass ratio of the stock solution and carbon dioxide is preferably 100: 0.01 to 100: 5, and preferably 100: 1.5 to 100: 5 from the viewpoint of the solubility of carbon dioxide in the stock solution and the persistence of foam generation with a diameter of 100 μm or less. 3 is more preferable.

  The aerosol cosmetic composition of the present invention can be applied without particular limitation as a cosmetic composition. However, since carbon dioxide gas is absorbed percutaneously and has a higher blood circulation promoting effect than conventional ones, skin color (brightness, dullness) Etc.) and is suitable as a skin cosmetic used for improving moisturizing feeling.

  When applied to the skin, the aerosol cosmetic composition of the present invention generates many bubbles of carbon dioxide having a diameter of 100 μm or less and makes it contact with the skin, thereby increasing the contact area between the carbon dioxide gas and the skin. Skin absorbability can be increased. The carbon dioxide gas of the component (E) is dissolved in the component (D), but cannot be easily dissolved, and a sufficient amount cannot be dissolved. Therefore, the solubility of carbon dioxide gas was increased by dissolving the surfactant of component (B) in component (D). Furthermore, in the present invention, by combining a specific powder of component (A), very fine bubbles can be continuously generated when discharged from a container and applied to the skin. As a result, carbon dioxide bubbles with a diameter of 100 μm or less can be brought into contact with the skin for a long time. By the way, water in which carbon dioxide gas is dissolved is released as bubbles all at once by applying an impact. For example, the act of discharging the agent from the container is a trigger, and dissolved carbon dioxide gas is released all at once. Then, the gas concentration in the solution decreases at a time. Therefore, by giving an appropriate viscosity, it was possible to suppress the release of carbon dioxide gas and to maintain the generation of bubbles. Further, by imparting viscosity to the stock solution, the present invention has an advantage that the growth and coalescence of the generated bubbles of 100 μm or less in diameter can be suppressed and small bubbles can be maintained for a long time. Furthermore, since the component (F) can dissolve carbon dioxide from water, it can serve as a carbon dioxide replenishment source and assist in the generation of bubbles.

The aerosol cosmetic composition of the present invention can increase the effect of promoting blood circulation by allowing it to stand for a certain period of time after being applied to the skin, and can also penetrate the active ingredients together in the cosmetic composition, which is very beneficial. it is conceivable that.
The aerosol cosmetic composition of the present invention can be used according to the usage scene, such as being applied to the skin, left for a certain period of time, applied to the skin, wiped off, or washed away.

The aerosol cosmetic of the present invention can be produced, for example, by the following steps 1 to 4.
Step 1: Components (C) and (D) and a base component are mixed and made uniform.
(In this step 1, it is preferable to heat to 50 ° C. or higher.)
Step 2: Add components (A) and (B), if necessary, component (F) and other components to the liquid obtained in step 1, and stir to make uniform.
Step 3: The liquid obtained in Step 2 is cooled to 15 to 30 ° C.
Step 4: The liquid obtained in Step 3 (also referred to as a stock solution) is filled in a pressure-resistant container and sealed, and then filled by pressurizing the component (E).
This invention discloses the following compositions further regarding embodiment mentioned above.

<1> The following components (A), (B), (C) and (D):
(A) Silicon oxide having an average particle size of 0.25 to 20 μm, or (meth) acrylic acid or a salt thereof / (meth) acrylic acid alkyl crosspolymer 0.01 to 10% by mass,
(B) One or more surfactants selected from nonionic surfactants and anionic surfactants of HLB 12-18, 0.1-15% by mass,
(C) a water-soluble thickener,
(D) A stock solution containing water and having a viscosity at 25 ° C. of 500 to 20000 mPa · s, and (E) an aerosol cosmetic containing carbon dioxide.

<2> Component (B) contains (B1) HLB 12-18 nonionic surfactant and (B2) anionic surfactant, and the mass ratio of components (B1) and (B2) (B1) / (B2) 1 to 100 is preferable, 1 to 10 is more preferable, and 1 to 5 is still more preferable.
<3> The aerosol cosmetic according to <1> or <2>, further comprising (F) an oil.
<4> The aerosol cosmetic according to any one of <1> to <3>, wherein the component (C) is an acrylic acid / alkyl acrylate copolymer or a carboxyvinyl polymer.
<5> The mass ratio of the stock solution containing components (A) to (D) and (E) carbon dioxide is preferably 100: 0.01 to 100: 5, and more preferably 100: 1.5 to 100: 3. The aerosol cosmetic according to any one of <1> to <4>.

<6> The aerosol cosmetic according to any one of <1> to <5>, wherein the average particle size of the component (A) is preferably 0.25 to 10 μm.
<7> The content of the component (A) is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, preferably 5% by mass or less, more preferably 3% by mass or less in the stock solution. The aerosol cosmetic according to any one of 1> to <6>.
<8> The aerosol cosmetic according to any one of <2> to <7>, wherein the nonionic surfactant of component (B1) is selected from polyoxyethylene alkyl ether and polyoxyethylene hydrogenated castor oil. .

<9> The aerosol cosmetic according to any one of <2> to <6>, wherein the anionic surfactant as the component (B2) is sodium polyoxyethylene lauryl ether phosphate.
The content of <10> component (B) is preferably 0.5% by mass or more, more preferably 0.6% by mass or more, preferably 15% by mass or less, more preferably 5% by mass or less in the stock solution. The aerosol cosmetic according to any one of the above items <1> to <9>, further preferably having a mass% or less.
The content of <11> component (C) is preferably 0.1% by mass or more, preferably 0.25% by mass or more, more preferably 0.3% by mass or more, and preferably 1% by mass or less in the stock solution. The aerosol cosmetic according to any one of <1> to <10>, more preferably 0.6% by mass or less, and further preferably 0.5% by mass or less.

<12> (F) The aerosol makeup according to any one of the above <3> to <11>, wherein the oil agent is one or more selected from glyceryl distearate, neopentyl glycol dicaprate, and alkyl benzoate. Fee.
The content of <13> component (F) is preferably 0.1% by mass or more, more preferably 1% by mass or more, further preferably 5% by mass or more, more preferably 20% by mass or less, and 15% by mass in the stock solution. The aerosol cosmetic according to any one of <3> to <12>, wherein the following is more preferable, and 10% by mass or less is more preferable.
<14> The viscosity of the stock solution at 25 ° C. of the aerosol cosmetic is preferably 1000 mPa · s or more, more preferably 1500 mPa · s or more, preferably 10,000 mPa · s or less, and more preferably 7000 mPa · s or less <1> to < The aerosol cosmetic material according to any one of 13>.

<15> A method of using the aerosol cosmetic composition according to any one of the above items <1> to <14>, applying the cosmetic composition to the skin, leaving it for a certain period of time, acclimating the skin, wiping, or washing away.
<16> The method for producing an aerosol cosmetic according to any one of <1> to <14>, which is produced by the following method.
Step 1: Step 1: Components (C) and (D) and a base component are mixed and made uniform.
Step 2: Add components (A) and (B) to the liquid obtained in Step 1 to make it uniform.
Step 3: The liquid obtained in Step 2 is cooled to 15 to 30 ° C.
Step 4: Fill the pressure-resistant container with the stock solution obtained in Step 3, seal it, and then fill with component (E).
<17> The method for producing an aerosol cosmetic according to <16>, wherein in step 2, (F) an oil agent and other components are further added and made uniform.

Production Example 1
A beaker was charged with 82 g of lauryl methacrylate, 3 g of methacrylic acid, 15 g of ethylene glycol dimethacrylate, and 2 g of lauroyl peroxide, and dissolved by stirring. 400 g of ion-exchanged water in which 0.75 g of sodium N-stearoyl-N-methyltaurine (SMT) was dissolved was added thereto and dispersed with a homomixer until the average particle size became 2.2 μm.
The dispersion was poured into a four-necked flask and purged with nitrogen for 30 minutes while stirring. The temperature inside the flask was heated to 80 ° C. with an oil bath. After reaching 80 ° C., polymerization was performed for 5 hours, and then cooled to room temperature. After neutralizing by adding 3.9 g of 1N NaOH to the dispersion of polymerized particles, the dispersion was freeze-dried and the particles were collected to obtain resin powder A. This resin powder A had a carboxyl group neutralization degree of 11.2%.

Examples 1-28 and Comparative Examples 1-5
Aerosol cosmetics having the compositions shown in Tables 1 to 4 were produced, the stock solution viscosity was measured, and the number of foams having a diameter of 100 μm or less and the feeling of use were evaluated. The results are also shown in Tables 1 to 4.

(Production method)
Ingredients (C) and (D) were mixed and stirred at 60 ° C. to make uniform, and the base ingredient was added to neutralize. Thereafter, components (A), (B), (F), other powders, and other components (such as preservatives) were added, stirred to be uniform, and cooled to 25 ° C. The obtained stock solution was filled in a pressure resistant container, sealed, and then filled with component (E).

(Evaluation method)
(1) Stock solution viscosity:
The stock solution was filled in 50 g in a 50 mL glass container and measured with a BM viscometer (manufactured by Toki Sangyo Co., Ltd.) (rotor NO4, 12 rpm, 1 minute).

(2) Number of bubbles with a diameter of 100 μm or less:
0.15 g of each cosmetic is discharged on a slide glass (7.6 × 2.6 cm) and spread. 45 seconds after discharge, an electric fluorescent stereomicroscope (manufactured by Carl Zeiss) was used to take a photograph within a range of 950 × 700 μm, and in this range, the number of bubbles having a diameter of 100 μm or less was counted visually.

(3) Usability:
Ten professional panels applied 1 g of each aerosol cosmetic to the inner side of the forearm, and sensory-evaluated the lack of sticky feeling immediately after spreading the paint based on the following criteria. The average score was obtained and indicated by the following criteria.

4: Very good.
3: Good.
2: Slightly bad.
1: Bad.

○: The average score is 3 or more.
Δ: The average score is 2 or more and less than 3.
X: The average score is less than 2.

Example 29 and Comparative Example 6
Aerosol cosmetics having the compositions shown in Table 5 were produced in the same manner as in Examples 1-18.
The obtained aerosol cosmetic was applied to the face for 24 months by 24 professional panels and used. Two months later, the expert panel reported the improvement of skin color and the improvement of the moisturizing feeling (moisturation) of the skin, and the percentage of panels that answered “Improved” and “Slightly improved” was obtained. The results are also shown in Table 5.

Claims (8)

The following components (A), (B), (C) and (D):
(A) Silicon oxide having an average particle size of 0.25 to 20 μm, or (meth) acrylic acid or a salt thereof / (meth) acrylic acid alkyl crosspolymer 0.01 to 10% by mass,
(B) One or more surfactants selected from nonionic surfactants and anionic surfactants of HLB 12-18, 0.1-15% by mass,
(C) a water-soluble thickener,
(D) A stock solution containing water and having a viscosity at 25 ° C. of 500 to 20000 mPa · s, and (E) an aerosol cosmetic containing carbon dioxide.   The aerosol according to claim 1, wherein the component (B) comprises (B1) a nonionic surfactant of HLB 12-18 and (B2) an anionic surfactant in a mass ratio of (B1) / (B2) = 1-100. Cosmetics.   Furthermore, the aerosol cosmetics of Claim 1 or 2 which contain 0.1-50 mass% of (F) oil agent in an undiluted | stock solution.   The aerosol cosmetic composition according to any one of claims 1 to 3, wherein the component (C) is an acrylic acid / alkyl acrylate copolymer or a carboxyvinyl polymer.   The aerosol cosmetic according to any one of claims 1 to 4, wherein a mass ratio of the stock solution containing the components (A) to (D) and (E) carbon dioxide is 100: 0.01 to 100: 5.   A method of using the aerosol cosmetic composition according to any one of claims 1 to 5, wherein the aerosol cosmetic composition is applied to the skin, left for a certain period of time, allowed to conform to the skin, wiped off, or washed away. The manufacturing method of the aerosol cosmetics of any one of Claims 1-5 manufactured by the following methods.
Step 1: Step 1: Components (C) and (D) and a base component are mixed and made uniform.
Step 2: Add components (A) and (B) to the liquid obtained in Step 1 to make it uniform.
Step 3: The liquid obtained in Step 2 is cooled to 15 to 30 ° C.
Step 4: Fill the pressure-resistant container with the stock solution obtained in Step 3, seal it, and then fill with component (E).   The process for producing an aerosol cosmetic composition according to claim 7, wherein in step 2, (F) an oil agent and other components are further added to make the mixture uniform.