KR20210002586A - Aerosol cosmetics - Google Patents

Abstract

The following components (A), (B), (C), (D) and (E): (A) dimethylpolysiloxane having a viscosity of 6 to 5000 mPa·s at 25°C, (B) polyethylene glycol having a molecular weight of 300 to 15000 , (C) a water-soluble thickener, (D) a nonionic surfactant of HLB 12 to 18, (E) water, and the content of the component (A) is 0.1 to 20% by mass, and the component for component (B) ( A stock solution having a mass ratio (A)/(B) of A) of 0.1 to 20, a viscosity of 500 to 20000 mPa·s at 25°C, and (F) an aerosol cosmetic containing carbon dioxide gas.

Description

Aerosol cosmetics

The present invention relates to an aerosol cosmetic.

Skin problems such as dark circles and dullness under the eyes are caused by a decrease in blood flow, and cosmetics using the carbonic acid gas effect are being studied in order to improve them. For example, Patent Document 1 describes that an aerosol-type cosmetic containing a polyglycerol fatty acid ester, sugars, silicone oil, and carbonic acid gas maintains a bubble state even during a massage procedure and is not sticky even after washing. In addition, Patent Document 2 describes that an aerosol cosmetic containing two specific surfactants, acrylic acid polymers, polyols and carbon dioxide gas generates a large number of fine bubbles with a fine particle diameter, and that the feeling of use such as stickiness is improved.

Japanese Unexamined Patent Publication No. 2011-93877 Japanese Unexamined Patent Publication No. 2016-17052

The present invention, the following components (A), (B), (C), (D) and (E):

(A) dimethylpolysiloxane having a viscosity of 6 to 5000 mPa·s at 25°C,

(B) polyethylene glycol having a molecular weight of 300 to 15000,

(C) water-soluble thickener,

(D) HLB 12-18 nonionic surfactant,

(E) water

Including, the content of the component (A) is 0.1 to 20 mass%, the mass ratio (A)/(B) of the component (A) to the component (B) is 0.1 to 20, and the viscosity at 25°C An undiluted solution of 500 ∼ 20000 mPa·s, and

(F) carbon dioxide gas

It relates to an aerosol cosmetic containing a.

Conventional carbon dioxide-containing aerosol cosmetics described in Patent Document 1 and Patent Document 2 suppress the volatilization of carbon dioxide gas when the air bubbles discharged from the container are blended into the skin, and in terms of stickiness and feeling of use of the skin after application. , There was still room for improvement.

1: is a figure which shows the method of measuring the volatilization rate of carbonic acid gas and the volatilization amount of carbonic acid gas in an Example.

The present inventors found that by combining a specific dimethylpolysiloxane and polyethylene glycol in a specific ratio and using a water-soluble thickener, a specific surfactant, and carbon dioxide gas, an aerosol cosmetic that solved the above problems can be obtained.

In the aerosol cosmetic of the present invention, when the air bubbles (foam) discharged from the container are fused to the skin, the volatilization of carbonic acid gas (carbon dioxide) is suppressed, and a sufficient amount of carbonic acid gas can be applied to the skin. In addition, the skin after application has no stickiness and has excellent feeling of use such as smoothness and softness.

The component (A) used in the present invention is dimethylpolysiloxane having a viscosity of 6 mPa·s or more and 5000 mPa·s or less at 25°C, and is 10 mPa·s or more in terms of suppressing the volatilization of carbon dioxide gas and enhancing the permeability to the skin. This is desirable. Further, from the viewpoint of the degree of no stickiness after application and the provision of smoothness and softness, 1000 mPa·s or less is preferable, and 500 mPa·s or less is more preferable. Further, from the balance between suppression of volatilization of carbon dioxide gas, suppression of stickiness after application, and imparting smoothness and softness, 10 mPa·s to 1000 mPa·s are preferable, and 10 mPa·s to 500 mPa·s are more preferable.

Here, the viscosity is measured at rotor No. 3, 12 rpm, 1 minute using a BM viscometer (manufactured by Toki Industries, Inc.), and when the viscosity exceeds 10000 mPa·s, rotor No. 3, 6 rpm, and It is measured in 1 minute.

The content of the component (A) is 0.1% by mass or more, preferably 0.5% by mass or more, and more preferably 1% by mass or more in the stock solution from the viewpoints of suppressing volatilization of carbon dioxide gas and suppressing stickiness after application. Moreover, from the viewpoint of suppressing stickiness after application|coating, and providing smoothness and softness, it is 20 mass% or less, Preferably it is 15 mass% or less, More preferably, it is 7 mass% or less. In addition, the content of the component (A) is 0.1 to 20% by mass in the stock solution, preferably 0.5 to 15% by mass, from the viewpoint of the balance between suppressing the volatilization of carbon dioxide gas, suppressing stickiness after application, and imparting smoothness and softness, 1-7 mass% is more preferable.

In addition, in the present invention, two or more dimethylpolysiloxanes of the component (A) may be used, and in that case, the viscosity at the time of mixing may be within the aforementioned range. In the case of blending two or more dimethylpolysiloxanes, it is preferable to contain dimethylpolysiloxane of less than 30 mPa·s and dimethylpolysiloxane of 30 mPa·s or more in a mass ratio of 1:0.1 to 1:10.

In addition, in the case of blending two or more dimethylpolysiloxanes, from the viewpoint of suppression of volatilization of carbon dioxide gas and a feeling of use, in the component (A), the dimethylpolysiloxane of 100 mPa·s or more is preferably 3% by mass or less, and 1 mass% % Or less is more preferable.

Polyethylene glycol of component (B) has an average molecular weight of 300 to 15000, and from the viewpoint of the balance between suppression of volatilization of carbon dioxide gas, suppression of stickiness after application, and provision of smoothness and softness, an average molecular weight of 300 to 10000 is preferable, and 500 to 5000 This is more preferable.

Component (B) can be used singly or in combination of two or more, and the content is preferably 0.1% by mass or more, more preferably 0.3% by mass or more in the undiluted solution, from the viewpoint of balance of suppressing stickiness after application and providing softness. It is mass% or more, more preferably 0.5 mass% or more, and from the viewpoint of the effect of suppressing volatilization of carbon dioxide gas, it is preferably 10 mass% or less, more preferably 8 mass% or less, still more preferably 5 mass% or less. . In addition, the content of the component (B) is preferably 0.1 to 10% by mass, more preferably 0.3 to 8 in the undiluted solution from the viewpoint of the balance between suppressing the volatilization of carbon dioxide gas, suppressing stickiness after application, and imparting smoothness and softness. It is mass%, More preferably, it is 0.5-5 mass%.

Further, in the present invention, the mass ratio (A)/(B) of the component (A) to the component (B) is 0.1 to 20, but it is possible to suppress the volatilization of carbon dioxide gas, suppress the stickiness after application, and impart smoothness and softness. In terms of balance, preferably 0.5 to 15, more preferably 0.8 to 5.

As the water-soluble thickener of component (C), any one used in ordinary cosmetics may be used. For example, carrageenan, dextrin, methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, polyvinyl alcohol, polyacrylic acid, poly Methacrylic acid, carboxyvinyl polymer, (acrylic acid/alkyl acrylate (C10-30)) copolymer, xanthan gum, carboxymethyl chitin, chitosan, and the like. Among these, acrylic acid-based polymers are preferred, and carboxyvinyl polymers, acrylic acid/alkyl acrylate copolymers are preferred from the viewpoint of suppression of volatilization of carbon dioxide gas, stability of the stock solution, and feeling of use during and after application (the degree of non-stickiness, smoothness and softness imparted). A polymer is more preferable, and a (acrylic acid/alkyl acrylate (C10-30)) copolymer is more preferable.

Here, (acrylic acid/alkyl acrylate (C10-30)) copolymer is a copolymer of C10-30 alkylacrylic acid and acrylic acid, methacrylic acid, or a lower alkyl ester thereof, and is used as allyl ether of sucrose or allyl of pentaerythritol. It is crosslinked with ether, and commercial products such as Pemulen TR-1, Pemulen TR-2, Carbopol ETD2020, Carbopol 1342, Carbopol 1382 (above, Lubrizol Advanced Materials) can be used.

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

Component (C) can be used one or two or more, and the content is preferably 0.05% by mass or more in the stock solution, more preferably from the viewpoint of improving the stability of the stock solution and the degree to which there is no stickiness during application. Is 0.1% by mass or more, more preferably 0.2% by mass or more, and preferably 1% by mass or less, more preferably 0.8% by mass or less, and still more preferably 0.7% by mass or less. In addition, the content of the component (C) is preferably 0.05 to 1% by mass, more preferably 0.1 to 0.8% by mass, and still more preferably 0.2 to 0.7% by mass in the stock solution.

Although the component (D) nonionic surfactant used by this invention is HLB 12-18, it is preferable that it is HLB 13-15.

Here, HLB (hydrophilic-lipophilic balance <Hydrophilic-Lipophilic Balance>) represents the molecular weight of the hydrophilic group occupied by the total molecular weight of the surfactant, and for nonionic surfactants, it is obtained by the equation of Griffin. It is to lose.

The HLB of a mixed surfactant composed of two or more types of nonionic surfactants is determined as follows. The HLB of the mixed surfactant is obtained by adding an average of the HLB value of each nonionic surfactant based on the blending ratio.

Mixed HLB = Σ(HLBx × Wx)/ΣWx

HLBx represents the HLB value of the nonionic surfactant X.

Wx represents the mass (g) of the nonionic surfactant X having a value of HLBx.

As a nonionic surfactant of component (D), for example, polyglycerol fatty acid ester, polyethylene glycol fatty acid ester, sucrose fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkyl ether, poly Oxyethylene sorbitol fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene propylene glycol fatty acid ester, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid ester, polyoxyethylene phytostanol ether , Polyoxyethylene phytosterol ether, polyoxyethylene cholesterol ether, polyoxyethylene cholesteryl ether, polyoxyalkylene-modified organopolysiloxane, polyoxyalkylene-alkyl co-modified organopolysiloxane, and the like. One type or two or more types selected from can be used.

Among these, polyoxyethylene alkyl ether and polyoxyethylene hydrogenated castor oil are preferable from the viewpoint of bubble generation when carbon dioxide gas is discharged.

The component (D) can be used alone or in combination of two or more, and the content is preferably 0.05% by mass or more in the stock solution, more preferably from the viewpoint of the degree of stickiness at the time of application and the stability of the stock solution. Is 0.1% by mass or more, more preferably 0.2% by mass or more, preferably 16% by mass or less, more preferably 4% by mass or less, and still more preferably 2% by mass or less. In addition, the content of the component (D) is preferably 0.05 to 16 mass% in the stock solution, more preferably 0.1 to 4 mass%, and more preferably 0.2 to 2 mass%.

The water of the component (E) used in the present invention acts as a solvent for the stock solution and forms the balance of the other components. The water content of the component (E) is in the stock solution, preferably 55% by mass or more, more preferably 65% by mass or more, from the viewpoint of the degree of no stickiness during application, smoothness and softness imparting, and emulsion stability of the stock solution, More preferably, it is 70 mass% or more, More preferably, it is 99 mass% or less, More preferably, it is 95 mass% or less, More preferably, it is 90 mass% or less. In addition, the content of water in the stock solution is preferably 55 to 99% by mass, more preferably 65 to 95% by mass, and still more preferably 70 to 90% by mass.

The aerosol cosmetic of the present invention further increases the concentration of carbonic acid gas in the undiluted solution, and in order to make the carbonic acid gas act on the skin, the undiluted solution contains, as component (G), an oil agent other than the component (A) used in conventional cosmetics. can do.

Specific examples of the oil agent of the component (G) that are liquid at 25°C include hydrocarbons such as paraffin, squalane and squalene; Natural animal and vegetable oils mainly containing triglycerides such as camellia oil, jojoba oil, olive oil, macadamia nut oil, avocado oil, and olive oil; Glycerin monostearic acid ester, glycerin distearic acid ester, glycerin monooleic acid ester, isopropyl palmitate, isopropyl stearate, butyl stearate, isopropyl myristic acid, diethyl phthalate, myristyl lactate, cetyl myristic acid , Cetyl lactate, Cetyl 2-ethylhexanoate, palmitic acid-2-ethylhexyl, myristic acid-2-octyldodecyl, oleic acid-2-octyldodecyl, triisostearate glycerol, di-paramethoxycinnamic acid -Monoester oils, such as glyceryl mono-2-ethylhexanoate, isotridecyl isononanoate, glyceryl monoisostearate, and alkyl benzoate (alkyl group having 12 to 15 carbon atoms); Diisopropyl adipate, diisobutyl adipate, neopentyl glycol dicaprate, glyceryl tri(caprylic-capric acid), glycerin tricaprate, neopentyl glycol di-2-ethylhexanoate, di( Caprylic acid/capric acid) propanediol, 1-isostearoyl-3-myristoylglycerol, diisostearyl malate, N-lauroyl-L-glutamic acid di (cholesteryl octyldodecyl) Diester oils such as; Ether oils such as alkyl-1,3-dimethylbutyl ether and dicaprylyl ether; Essential oils, such as eucalyptus oil and mentha oil, etc. are mentioned.

Among these, monoester oil and diester oil are preferable, and isotridecyl isononanoate and alkyl benzoate are more preferable from the viewpoint of increasing the carbon dioxide gas concentration and providing a smooth feeling of use.

In addition, examples of the oil agent other than liquid at 25°C include solid waxes, pastes and solid fats at 25°C, and include higher alcohols having 12 to 24 carbon atoms, higher fatty acids having 12 to 24 carbon atoms, and paraffin wax. have.

Component (G) can be used singly or in combination of two or more, and the content is preferably 0.1 to 15% by mass in the stock solution from the viewpoint of enhancing the hardness of the foam, the elongation of the foam, and the effect of the carbon dioxide gas. , 0.5-10 mass% is more preferable.

In addition, the total amount of these oils (component (A) and component (G)) in the undiluted solution is from the viewpoint of the solubility of carbon dioxide gas, elongation to the skin, and feeling of use, preferably 0.1 to 20 mass%, more preferably It is 1 to 15 mass%.

The aerosol cosmetic of the present invention may further contain surfactants other than the component (D) in the stock solution from the viewpoint of improving the solubility of carbon dioxide gas in the stock solution, emulsification stability, and generating a lot of air bubbles. Examples of surfactants other than component (D) include nonionic surfactants, anionic surfactants, amphoteric surfactants, and the like of less than HLB 12.

As a nonionic surfactant of less than HLB 12, C8-C22 sorbitan fatty acid ester; Alkyl glyceryl ethers such as isostearyl glyceryl ether; And polyoxyalkylene-modified silicones.

Examples of the sorbitan fatty acid ester include sorbitan monopalmitate, sorbitan monostearate, sorbitan monooleate, sorbitan sesquioleate, palm oil fatty acid sorbitan, sorbitan tristearate, and the like, As sorbitan monopalmitate, Leodol SP-P10 (HLB 6.7), sorbitan monostearate, Leodol SP-S10V (HLB 4.7), sorbitan monooleate, Leodol SP-O10V (HLB 4.3) , As sesquioleate sorbitan, Leodol AO-15V (HLB 3.7), palm oil fatty acid sorbitan, Leodol SP-L10 (HLB 8.6), tristearate sorbitan, SP-S30V (HLB 2.1) (more , Kao Corporation) and other commercial items can be used.

Examples of the polyoxyalkylene-modified silicone include polyoxyethylene/methylpolysiloxane copolymer, poly(oxyethylene/oxypropylene)/methylpolysiloxane copolymer, etc., and “KF- 6015'' (PEG-3 dimethicone) (HLB 4.5), ``KF-6019'' (PEG-9 dimethicone) (HLB 4.5), and ``SH-3775M'' sold by Dore Dow Corning Silicon (PEG- 12 dimethicone) (HLB 5), "SH-3773M" (PEG-12 dimethicone) (HLB 8) and other commercially available products can be used.

When using a nonionic surfactant of less than HLB 12, the content in the stock solution is preferably 0.01 to 1 mass%, more preferably 0.05 to 0.7 mass%.

As anionic surfactants, for example, C12-C22 alkyl sulfuric acid esters such as sodium lauryl sulfate and potassium lauryl sulfate, or salts thereof, polyoxyethylene having 12-22 carbon atoms such as sodium polyoxyethylene lauryl ether phosphate. Alkyl ether phosphoric acid or its salt, C12-C24 dialkylsulfosuccinic acid or its salt, C12-C22 N-alkylloylmethyltaurine or its salt, N-C12-C22 acylglutamic acid or its salt, etc. Can be lifted. Among these, polyoxyethylene alkyl ether phosphoric acid or a salt thereof, and acyl glutamic acid or a salt thereof are preferred from the viewpoint of emulsification stability and generation of bubbles during discharge.

When an anionic surfactant is included, the content in the stock solution is preferably 0.01 to 1 mass%, more preferably 0.05 to 0.7 mass%.

The total content of all surfactants including the component (D) is in the stock solution from the viewpoint of solubility, feeling and stability of carbon dioxide gas, preferably 0.1 to 10% by mass, more preferably 0.2 to 8% by mass, further Preferably it is 0.3 to 5 mass%.

Further, the aerosol cosmetic of the present invention may further contain a dihydric or trihydric alcohol other than the component (B) in the undiluted solution from the viewpoint of suppressing the volatilization of carbon dioxide gas and the feeling of use after application.

As the dihydric alcohol, propylene glycol, propanediol, 1,3-butylene glycol, 1,3-propanediol, and dipropylene glycol are preferable, and 1,3-propanediol, dipropylene glycol, etc. are mentioned. Examples of the trivalent alcohol include glycerin, diglycerin, and polyglycerin.

The content of dihydric or trihydric alcohols other than the component (B) is preferably 1 to 20% by mass, more preferably 2 to 15% by mass, and still more preferably 2 to 10% by mass in the stock solution.

In the aerosol cosmetic of the present invention, the undiluted solution is additionally used in conventional cosmetics, such as ethanol, preservatives, antioxidants, pigments, pH adjusters, fragrances, ultraviolet absorbers, moisturizers, blood circulation accelerators, cooling agents, limiting agents. It may contain an agent, a disinfectant, a whitening agent, an anti-inflammatory agent, a skin activator, and the like.

In the aerosol cosmetic composition of the present invention, the stock solution is prepared by mixing the components (A) to (E) and other components. 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 from the viewpoint of the emulsion stability of the stock solution and the ejection property of bubbles. Do.

Here, the viscosity is measured at rotor No. 3, 12 rpm, 1 minute using a BM viscometer (manufactured by Toki Industries, Inc.), and when the viscosity exceeds 10000 mPa·s, rotor No. 3, 6 rpm, and It is measured in 1 minute.

The aerosol cosmetic of the present invention can be produced by filling the above-described undiluted solution and (F) carbon dioxide gas into a pressure-resistant container. As the form of the spray, it is preferable to use a foam type for discharging in the form of bubbles.

The mass ratio of the stock solution and the carbon dioxide gas is, from the viewpoint of the solubility of the carbon dioxide gas in the stock solution and the generation of bubbles, preferably 94:6 to 99.5:0.5, more preferably 95:5 to 99:1, even more preferably 96.5: 3.5 to 98.5: 1.5.

The aerosol cosmetic of the present invention may contain, in addition to the carbon dioxide gas of the component (F), a propellant used in an ordinary aerosol cosmetic. Liquefied petroleum gas, compressed gas, etc. are mentioned as a propellant. When a propellant other than carbonic acid gas is included, the content of carbon dioxide gas with respect to the total amount of carbon dioxide gas and the propellant is preferably 90% by mass or more, more preferably 95% by mass or more, further preferably 98% by mass % Or more.

The aerosol cosmetic of the present invention can be applied as a cosmetic without any particular limitation, but since carbon dioxide gas is transdermally absorbed and an effect of promoting blood circulation higher than that of the conventional one is obtained, improvement of skin color (such as brightness, dullness, etc.) It is preferable as a skin cosmetic used for improvement or the like.

The aerosol cosmetic of the present invention is applied to the skin and then allowed to stand for a certain period of time, so that the coating agent including air bubbles forms one type of coating film, so that the effect of promoting blood circulation can be enhanced. In addition, it is considered to be very beneficial because the active ingredients in cosmetics can also be penetrated.

The aerosol cosmetic of the present invention can be applied to the skin, left for a certain period of time, blended with the skin, wiped off, washed, etc., depending on the usage scene.

The aerosol cosmetic of the present invention can be produced by a conventional method, and for example, can be produced by the following steps 1 to 4.

Step 1: The components (C), (E) and the base component are mixed and made uniform.

(In this process 1, it is preferable to heat to 50 degreeC or more.)

Step 2: To the liquid obtained in Step 1, components (A), (B), (D), and, if necessary, other components are added and stirred to make it 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 an undiluted solution) is filled into a pressure-resistant container, sealed, and then filled by pressing the component (F).

Regarding the above-described embodiment, the present invention further discloses the following compositions.

<1> The following components (A), (B), (C), (D) and (E):

(A) dimethylpolysiloxane having a viscosity of 6 to 5000 mPa·s at 25°C,

(B) polyethylene glycol having a molecular weight of 300 to 15000,

(C) water-soluble thickener,

(D) HLB 12-18 nonionic surfactant,

(E) water

Including, the content of the component (A) is 0.1 to 20 mass%, the mass ratio (A)/(B) of the component (A) to the component (B) is 0.1 to 20, and the viscosity at 25°C An undiluted solution of 500 ∼ 20000 mPa·s, and

(F) carbon dioxide gas

Aerosol cosmetics containing.

The aerosol cosmetic according to the above <1>, wherein the <2> component (A) has a 25°C viscosity of preferably 10 mPa·s or more, preferably 1000 mPa·s or less, and more preferably 500 mPa·s or less.

The content of the <3> component (A) is preferably 0.5% by mass or more in the stock solution, more preferably 1% by mass or more, preferably 15% by mass or less, and more preferably 7% by mass or less. > Or the aerosol cosmetic according to <2>.

When <4> component (A) mixes two or more types of dimethylpolysiloxane, preferably, dimethylpolysiloxane of less than 30 mPa·s and dimethylpolysiloxane of 30 mPa·s or more are used in a ratio of 1:1 to 1:10. The aerosol cosmetic according to any one of said <1> to <3> contained by mass ratio.

When the <5> component (A) mixes two or more dimethylpolysiloxanes, preferably 100 mPa·s or more dimethylpolysiloxane is 3% by mass or less, and 1% by mass or less is more preferable above <1> to The aerosol cosmetic according to any one of <4>.

The aerosol cosmetic according to any one of the above <1> to <5>, wherein the polyethylene glycol of the <6> component (B) is preferably from 300 to 10000 with an average molecular weight of from 500 to 5000.

The content of the <7> component (B) is preferably 0.1% by mass or more in the stock solution, more preferably 0.3% by mass or more, still more preferably 0.5% by mass or more, preferably 10% by mass or less, and 8% by mass The aerosol cosmetic according to any one of the above <1> to <6> is more preferably% or less, and still more preferably 5% by mass or less.

The mass ratio (A)/(B) of the component (A) to the <8> component (B) is preferably 0.5 to 15, and any one of the above <1> to <7> more preferably 0.8 to 5 Aerosol cosmetics described in.

The <9> component (C) is preferably an acrylic acid-based polymer, more preferably a carboxyvinyl polymer and an acrylic acid/alkyl acrylate copolymer, and the (acrylic acid/alkyl acrylate (C10-30)) copolymer is still more preferable. The aerosol cosmetic according to any one of 1> to <8>.

The content of the <10> component (C) is preferably 0.05% by mass or more in the stock solution, more preferably 0.1% by mass or more, still more preferably 0.2% by mass or more, preferably 1% by mass or less, and 0.8% by mass The aerosol cosmetic according to any one of the above <1> to <9> is more preferably% or less, and further preferably 0.7 mass% or less.

The aerosol cosmetic according to any one of the above <1> to <10>, wherein the nonionic surfactant of the <11> component (D) is preferably HLB 13 to 15.

The aerosol cosmetic according to any one of the above <1> to <11>, wherein the <12> component (D) is preferably polyoxyethylene alkyl ether or polyoxyethylene hydrogenated castor oil.

The content of the <13> component (D) is preferably 0.05% by mass or more in the stock solution, more preferably 0.1% by mass, more preferably 0.2% by mass or more, preferably 16% by mass or less, and 4% by mass The aerosol cosmetic according to any one of the above <1> to <12> is more preferable and 2 mass% or less is more preferable.

The water content of the <14> component (E) is preferably 55% by mass or more in the stock solution, more preferably 65% by mass or more, still more preferably 70% by mass or more, and preferably 99% by mass or less, and 95 The aerosol cosmetic according to any one of the above <1> to <13> is more preferably not more than 90% by mass, and still more preferably not more than 90% by mass.

<15> The aerosol cosmetic according to any one of the above <1> to <14> which can further contain an oil agent other than the component (A) as the component (G) in the stock solution.

The aerosol cosmetic according to the above <15>, wherein the oil of the <16> component (G) is preferably a liquid oil at 25°C, a solid wax, paste or solid fat at 25°C.

The aerosol cosmetic according to the above <15> or <16>, wherein the content of the <17> component (G) is preferably 0.1 to 15% by mass in the stock solution, and 0.5 to 10% by mass is more preferable.

The total amount of the oil agent (component (A) and component (G)) in the <18> stock solution is preferably 0.1 to 20% by mass, and 1 to 15% by mass is more preferable any of the above <15> to <17> Aerosol cosmetics described in.

<19> The aerosol cosmetic according to any one of the above <1> to <18> preferably containing a surfactant other than the component (D) in the stock solution.

The aerosol cosmetic according to the above <19>, wherein the surfactant other than the <20> component (D) is preferably a nonionic surfactant less than HLB 12, an anionic surfactant, and an amphoteric surfactant.

<21> A nonionic surfactant having less than HLB 12 is preferably a C8-C22 sorbitan fatty acid ester, an alkyl glyceryl ether, or a polyoxyalkylene-modified silicone, and the content in the stock solution is preferably 0.01 to 1 The aerosol cosmetic according to the above <20>, which is mass%, and more preferably 0.05 to 0.7 mass%.

The <22> anionic surfactant is preferably polyoxyethylene alkyl ether phosphoric acid or a salt thereof, acyl glutamic acid or a salt thereof, and the content in the stock solution is preferably 0.01 to 1 mass%, and 0.05 to 0.7 mass% The aerosol cosmetic according to the more preferable <20>.

<23> The total content of all surfactants including component (D) is preferably 0.1 to 10% by mass in the stock solution, more preferably 0.2 to 8% by mass, and still more preferably 0.3 to 5% by mass. The aerosol cosmetic according to any one of 1> to <22>.

<24> The aerosol cosmetic in any one of said <1>-<23> which can contain dihydric or trihydric alcohol other than a component (B) further in a stock solution.

Dihydric or trihydric alcohols other than the <25> component (B) are preferably propylene glycol, propanediol, 1,3-butylene glycol, 1,3-propanediol, dipropylene glycol, glycerin, diglycerin, The aerosol cosmetic according to said <24> which is polyglycerin.

The content of the dihydric or trihydric alcohol other than the <26> component (B) is preferably 1 to 20% by mass in the stock solution, more preferably 2 to 15% by mass, and still more preferably 2 to 10% by mass. The aerosol cosmetic according to <24> or <25>.

<27> The above <1>-<the viscosity at 25°C of the stock solution is preferably 500 to 20000 mPa·s, more preferably 1000 to 10000 mPa·s, and still more preferably 1500 to 7000 mPa·s. The aerosol cosmetic according to any one of 26>.

The mass ratio of the <28> stock solution and (F) carbonic acid gas is preferably 94:6 to 99.5:0.5, more preferably 95:5 to 99:1, and still more preferably 96.5:3.5 to 98.5:1.5 The aerosol cosmetic composition in any one of said <1>-<27>.

<29> The aerosol cosmetic according to any one of the above <1> to <28>, which is a skin cosmetic used for improving skin color (such as brightness and dullness) and improving moisturizing feeling.

<30> The aerosol cosmetic according to any one of <1> to <29>, which is applied to the skin and allowed to stand for a certain period of time, blended with the skin, wiped off, or washed off and used.

The aerosol cosmetic composition in any one of said <1>-<30> which can be manufactured by <31> following process 1-process 4.

Step 1: The components (C), (E) and the base component are mixed and made uniform.

(In this process 1, it is preferable to heat to 50 degreeC or more.)

Step 2: To the liquid obtained in Step 1, components (A), (B), (D), and, if necessary, other components are added and stirred to make it 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 an undiluted solution) is filled into a pressure-resistant container, sealed, and then filled by pressing the component (F).

Example

Examples 1 to 6 and Comparative Examples 1 to 2

An aerosol cosmetic of the composition shown in Table 1 was prepared, and the viscosity of the stock solution at 25°C was measured, and the feeling of use (the degree of non-stickiness, smoothness, and softness), the volatilization rate of carbon dioxide gas, and the volatilization amount of carbon dioxide gas were evaluated. I did. The results are shown together in Table 1.

In addition, the evaluation of the volatilization rate and the amount of carbon dioxide gas is to describe the amount of carbon dioxide gas contained in the bubbles discharged from the aerosol cosmetic, and reaches a certain amount about 5 minutes after the bubbles are discharged. By quantity, it is possible to evaluate the difference in the amount of volatilization.

(Manufacturing method)

Step 1: The components (C), (E), and the base component are mixed and made uniform under a temperature of 60 to 70°C.

Step 2: To the liquid obtained in Step 1, components (A), (B), (D), (G), and other components are added, stirred, and made uniform.

Step 3: The liquid obtained in step 2 is cooled to 15 to 30°C.

Step 4: The liquid (undiluted solution) obtained in Step 3 was filled into a pressure-resistant container, sealed, and then filled by pressurizing component (F) to obtain an aerosol cosmetic.

(Assessment Methods)

(1) Stock solution viscosity:

50 g of the stock solution was charged into a 50 ml glass container, and measured with a BM viscometer (manufactured by Toki Industries) (rotor NO4, 12 rpm, 1 minute).

(2) Feeling (no stickiness, smoothness, softness):

Three professional panelists applied 1 g of each aerosol cosmetic to the inside of the forearm, and evaluated the smoothness and softness immediately after spreading according to the following criteria.

1: Nothing.

2: Almost none.

3: There are a few.

4: Yes.

5: There is very much.

In addition, about the degree of no stickiness, sensory evaluation was performed according to the following criteria.

1: There is quite a stickiness.

2: There is stickiness.

3: There is a little stickiness.

4: There is no stickiness.

5: There is no stickiness at all.

(3) The rate of volatilization of carbon dioxide gas:

As shown in Fig. 1, after discharging about 1 g of each aerosol cosmetic into a cylindrical glass container (the container has a diameter of 25 mm and a height of 38 mm), a carbon dioxide gas electrode CE-2041 (manufactured by Toa DKK Co., Ltd.) It was inserted so as not to touch the cosmetic, and the concentration of carbon dioxide gas was measured while the glass container was sealed. The measuring device (carbonate ion concentration meter) is an ION/pH METER IM-32P.

The change amount per minute was calculated with respect to the change amount of the carbon dioxide gas concentration for 4 minutes from 1 minute to 5 minutes of the start of the measurement, and it was taken as the volatilization rate (ppm/minute) of the carbon dioxide gas, and the score was set as the following standard.

1: less than 15 ppm/min.

2: 15 ppm/min or more and less than 25 ppm/min.

3: 25 ppm/min or more and less than 30 ppm/min.

4: 30 ppm/min or more and less than 35 ppm/min.

5: 35 ppm/min or more.

(4) Volatilization amount of carbon dioxide gas:

In the same manner as in (3), the carbon dioxide gas concentration was measured, and the carbon dioxide gas concentration 10 minutes after the start of measurement was taken as the amount of carbon dioxide gas volatilized (ppm) as the amount in which the carbon dioxide gas was sufficiently volatilized in the glass container, and the following criteria Was taken as the score.

1: less than 65 ppm.

2: More than 65 ppm and less than 100 ppm.

3: 100 ppm or more and less than 150 ppm.

4: 150 ppm or more and less than 200 ppm.

5: 200 ppm or more.

From the results of Table 1, all of Examples 1 to 6, which are the products of the present invention, had an effect of suppressing the volatilization of carbon dioxide gas, and had a good balance of stickiness after application and smoothness and softness. Comparative Example 1 using a silicone oil having a low viscosity was inferior to the effect of suppressing volatilization of carbon dioxide gas, and Comparative Example 2 using a silicone oil having a high viscosity had an inferior effect on suppressing volatilization of carbon dioxide gas and a feeling of use.

Examples 7 to 9, Comparative Example 3

In the same manner as in Examples 1 to 6, an aerosol cosmetic composition having the composition shown in Table 2 was prepared, and the viscosity of the stock solution at 25°C was measured, and the feeling of use (the degree of no stickiness, smoothness, and softness) was evaluated. The results are shown together in Table 2.

From the results of Table 2, all of Examples 7 to 9, which are products of the present invention, had an effect of suppressing the volatilization of carbon dioxide gas, and had a good balance between stickiness suppression and smoothness and softness after application. Comparative Example 3 using polyethylene glycol having a high molecular weight was inferior in use.

Test Example 1

For the aerosol cosmetics of Examples 1 to 9 and Comparative Examples 1 to 3, the rate of change in the volatilization rate of carbonic acid gas and the amount of change in volatilization of carbonic acid gas were evaluated. Table 3 shows the results.

(Assessment Methods)

(5) The rate of change in the volatilization rate of carbon dioxide gas:

In Example 5, what did not contain dimethylpolysiloxane (component (A)) was made into the control prescription. In each aerosol cosmetic, in the same manner as in (3) above, the amount of change per minute is calculated for the amount of change in the concentration of carbon dioxide from 1 minute to 5 minutes from the start of the measurement, and the volatilization rate of carbon dioxide gas (ppm/minute) Was made into. For each aerosol cosmetic, the difference in the volatilization rate from the control formulation was determined, it was set as the rate of change in volatilization rate, and evaluated by the following reference score.

In addition, in the control formulation, since the volatilization of carbon dioxide gas is not suppressed and the volatilization rate increases, the greater the difference in the volatilization rate from the control formulation (the smaller the reference score) indicates that the volatilization of the carbon dioxide gas is suppressed.

1: Volatilization rate change rate is 23.5 ppm/min or more.

2: The volatilization rate change rate is 13.5 ppm/min or more and less than 23.5 ppm/min.

3: The volatilization rate change rate is 8.5 ppm/min or more and less than 13.5 ppm/min.

4: The volatilization rate change rate is 3.5 ppm/min or more and less than 8.5 ppm/min.

5: volatilization rate change rate is less than 3.5 ppm/min.

(6) Change in volatilization of carbon dioxide gas:

In the same manner as in (5), for each aerosol cosmetic, the carbon dioxide gas concentration was measured, and the carbon dioxide gas concentration 10 minutes after the start of the measurement was taken as the amount of carbon dioxide gas volatilized (ppm). For each aerosol cosmetic, the difference in the amount of carbon dioxide gas volatilized from the control formulation was determined, it was set as the amount of change in volatilization, and evaluated by the following reference score.

In addition, in the control prescription, since the volatilization amount of carbon dioxide gas is not suppressed and the amount of volatilization increases, the larger the difference in the amount of volatilization from the control prescription (the smaller the reference score is) indicates that the amount of volatilization of carbon dioxide gas is suppressed.

1: The amount of volatilization change is 164 ppm or more.

2: The amount of volatilization change is 129 ppm or more and less than 164 ppm.

3: The volatilization change amount is 79 ppm or more and less than 129 ppm.

4: The volatilization change amount is 29 ppm or more and less than 79 ppm.

5: The amount of volatilization change is less than 29 ppm.

Prescription Example 1

In the same manner as in Example 1, a stock solution of Formulation Example 1 was prepared. This stock solution and carbon dioxide gas were charged into a pressure-resistant container in a ratio of 97.6:2.4 to obtain an aerosol cosmetic.

The obtained aerosol cosmetic is excellent in the feeling of use (no stickiness, smoothness, and softness), the volatilization rate of carbon dioxide gas, and the volatilization amount of carbon dioxide gas.

(ingredient) (mass%)

Dipotassium edetate 0.05

Methyl paraoxybenzoate 0.2

Potassium dihydrogen phosphate 0.2

Potassium hydroxide solution (A) 0.5

(Acrylic acid/alkyl acrylate (C10-30)) Copolymer (PEMULEN TR-1) 0.35

Polyoxyethylene hydrogenated castor oil (Emanone CH60K) 0.5

Polyoxyethylene/methylpolysiloxane copolymer (SH3775M) 0.5

Alkyl benzoate (C = 12 to 15) 2.0

Methylpolysiloxane (10cs) 2.0

Methylpolysiloxane (50cs) 3.0

Aqueous dispersion of lauryl methacrylate·ethylene glycol dimethacrylate·sodium methacrylate copolymer (Sofcare ST-G) 1.25

Dipropylene glycol 5.0

1,3-propanediol 2.0

Polyethylene glycol 1540 1.0

Nicotinic acid amide 0.01

Phenoxyethanol 0.35

Spices 0.1

Purified water balance

Undiluted sum 100

Prescription Example 2

In the same manner as in Example 1, a stock solution of Formulation Example 2 was prepared. This stock solution and carbon dioxide gas were charged into a pressure-resistant container in a ratio of 97.8:2.2 to obtain an aerosol cosmetic.

The obtained aerosol cosmetic is excellent in the feeling of use (no stickiness, smoothness, and softness), the volatilization rate of carbon dioxide gas, and the volatilization amount of carbon dioxide gas.

(ingredient) (mass%)

Dipotassium edetate 0.05

Methyl paraoxybenzoate 0.2

Potassium dihydrogen phosphate 0.2

Potassium hydroxide solution (A) 0.5

(Acrylic acid/alkyl acrylate (C10-30)) Copolymer (PEMULEN TR-1) 0.4

Polyoxyethylene hydrogenated castor oil (Emanone CH60K) 0.5

Polyoxyethylene/methylpolysiloxane copolymer (SH3775M) 0.5

Isononanoate isotridecyl 2.0

Methylpolysiloxane (30cs) 5.0

Aqueous dispersion of lauryl methacrylate·ethylene glycol dimethacrylate·sodium methacrylate copolymer (Sofcare ST-G) 1.25

Dipropylene glycol 5.0

1,3-propanediol 2.0

Polyethylene glycol 1540 1.0

Nicotinic acid amide 1.0

Citron extract 0.5

Phenoxyethanol 0.35

Spices 0.1

Purified water balance

Undiluted sum 100

Claims (6)

The following components (A), (B), (C), (D) and (E):
(A) dimethylpolysiloxane having a viscosity of 6 to 5000 mPa·s at 25°C,
(B) polyethylene glycol having a molecular weight of 300 to 15000,
(C) water-soluble thickener,
(D) HLB 12-18 nonionic surfactant,
(E) water
Including, the content of the component (A) is 0.1 to 20 mass%, the mass ratio (A)/(B) of the component (A) to the component (B) is 0.1 to 20, and the viscosity at 25°C An undiluted solution of 500 ∼ 20000 mPa·s, and
(F) carbon dioxide gas
Aerosol cosmetics containing. The method of claim 1,
An aerosol cosmetic composition in which the content of the component (B) is 0.1 to 10% by mass in the stock solution. The method according to claim 1 or 2,
Component (C) is an acrylic acid-based polymer, an aerosol cosmetic. The method according to any one of claims 1 to 3,
An aerosol cosmetic composition in which the undiluted solution further contains an oil agent other than the component (A). The method according to any one of claims 1 to 4,
An aerosol cosmetic composition in which the dimethylpolysiloxane of component (A) contains dimethylpolysiloxane of less than 30 mPa·s and dimethylpolysiloxane of 30 mPa·s or more in a mass ratio of 1:0.1 to 1:10. The method according to any one of claims 1 to 5,
An aerosol cosmetic in which the undiluted solution further contains, as surfactants other than component (D), a nonionic surfactant of less than HLB 12, an anionic surfactant, and an amphoteric surfactant.

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