JP2017109966A - Skin Cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skin cosmetic which has excellent dispersibility and adhesiveness of a skin cosmetic and gives an excellent dry touch feeling to a part to which a skin cosmetic is applied.SOLUTION: There is provided a skin cosmetic which comprises component (A1) one or two or more powders which have a number average particle diameter of 0.1 μm or more and 30 μm or less and are selected from a group consisting of talc, silica and mica, component (A2) a powder other than the component (A1) having a number average particle diameter of 0.1 μm or more and 10 μm or less, component (B) an ester oil, component (C1) a volatile silicone oil, component (C2) a non-volatile silicone oil, component (c3) a silicone-based surfactant, component (D) ethanol and component (E) a propellant, wherein the mass ratio ((A1)+(A2)+(B))/((C1)+(D)) of the total content of the components (A1), (A2) and (B) to the total content of the components (C1) and (D) in the skin cosmetic is 0.5 or more and 20 or less.SELECTED DRAWING: None

Description

  The present invention relates to a skin cosmetic.

Patent Documents 1 and 2 disclose techniques related to aerosol-type cosmetics.
Patent Document 1 (Japanese Patent Laid-Open No. 11-29455) describes an aerosol composition in which Nε-lauroyl-L-lysine, ethanol, an oil agent, a surfactant, and a propellant are blended with specific materials. And according to the same literature, it is said that the aerosol composition which does not become white on the skin, maintains a refreshing feeling, has a natural smooth feeling without any sense of incongruity, and has stability can be provided.

  Patent Document 2 (Japanese Patent Laid-Open No. 2002-3356) describes an aerosol type antiperspirant composition containing an antiperspirant component, water, a propellant and polyoxyethylene polyoxypropylene alkyl ether phosphate. Yes. In addition, the same document discloses that such an aerosol type antiperspirant composition exhibits a high antiperspirant effect immediately after application to the skin, has excellent solubilization power, does not precipitate antiperspirant components, and the like. It is described as being.

JP 11-29455 A JP 2002-3356 A

  However, even if the technique described in the above-mentioned patent document is used, it is possible to obtain a skin cosmetic that is excellent in dispersibility and adhesion of the skin cosmetic and that is excellent in the dry feeling of the part to which the skin cosmetic is applied. There was room for improvement.

According to the invention, the following components (A1), (A2), (B), (C1), (C2), (C3), (D) and (E):
(A1) Number average particle diameter of 0.1 μm or more and 30 μm or less, and one or more powders selected from the group consisting of talc, silica and mica,
(A2) Powder other than the component (A1) having a number average particle size of 0.1 μm or more and 10 μm or less,
(B) ester oil,
(C1) volatile silicone oil,
(C2) non-volatile silicone oil,
(C3) silicone surfactant,
(D) A skin cosmetic containing ethanol and (E) a propellant,
Mass ratio of the total content of the components (A1), (A2) and (B) to the total content of the components (C1) and (D) in the skin cosmetic ((A1) + (A2) A skin cosmetic is provided in which + (B)) / ((C) + (D)) is 0.5 or more and 20 or less.

  ADVANTAGE OF THE INVENTION According to this invention, while being excellent in the dispersibility and adhesiveness of skin cosmetics, the skin cosmetics excellent in the dry feeling of the part to which skin cosmetics were applied can be obtained.

In the present embodiment, the skin cosmetic is a composition comprising components (A1), (A2), (B), (C1), (C2), (C3), (D) and (E). Hereinafter, each component will be described with specific examples. Each component can be used alone or in combination of two or more.
Further, in the present embodiment, the feeling of use means a smooth feel at a place where the skin cosmetic is applied.

First, the powder component will be described. The skin cosmetic in the present embodiment includes powders of components (A1) and (A2).
(Component (A1))
Component (A1) is a powder having a number average particle size of 0.1 μm or more and 30 μm or less, and one or more powders selected from the group consisting of talc, silica and mica.
More specifically, component (A1) is an inorganic powder composed of one or more selected from the group consisting of talc, silica and mica. From the viewpoint of enhancing the smoothness of the part to which the skin cosmetic is applied, the material of component (A1) is preferably one or more selected from talc or silica, more preferably talc.

  The surface of the component (A1) may be subjected to a predetermined surface treatment such as hydrophobization. The component (A1) may have a coating layer on the surface, and when the component (A1) has a coating layer, the coating layer may cover a part of the surface of the component (A1). However, the entire surface may be covered.

As a method for hydrophobizing the surface of the component (A1), a method applied to a normal cosmetic powder can be used. For example, specific examples of the hydrophobic treatment method include silicone treatment, fatty acid treatment, lauroyllysine treatment, surfactant treatment, metal soap treatment, fluorine treatment, and lecithin treatment. Those selected from treatment, fatty acid treatment and fluorine treatment are preferred.
Among these, examples of the silicone treatment include treatment with methylhydrogenpolysiloxane, methylpolysiloxane, trimethylsiloxysilicic acid, triethoxycaprylylsilane, silicone resin, and the like.
Examples of the fatty acid treatment include treatment with myristic acid, stearic acid, and the like.
Examples of the fluorine treatment include treatment with pearl fluoroalkyl phosphate ester, perfluoroalkyl silane, and the like.
The usage-amount of these hydrophobization processing agents is 0.5-50 mass% with respect to the powder mass before a process, for example, Preferably it is 1-30 mass%.

Examples of the shape of the component (A1) include a plate shape and a spherical shape. From the viewpoint of increasing the adhesion of the skin cosmetic and from the viewpoint of increasing the dry feeling of the part to which the skin cosmetic is applied, the component (A1) is preferably a plate-like powder.
In addition, the component (A1) may be hollow or solid, and the whole or part of the component (A1) may be porous.

  The size of the component (A1) is from the viewpoint of increasing the adhesion of the skin cosmetic and from the viewpoint of increasing the dry feeling of the part to which the skin cosmetic is applied, and the number average particle diameter is 0.1 μm or more. The thickness is preferably 1 μm or more, more preferably 5 μm or more, further preferably 10 μm or more, and 30 μm or less, preferably 25 μm or less, more preferably 20 μm or less, and even more preferably 18 μm or less.

  Here, the number average particle diameter of the component (A1) and the component (A2) described later is a number average particle diameter measured by a light scattering method. In addition, the number average particle diameter means a value obtained by arithmetically averaging the particle diameter of each particle.

More specifically, as component (A1), talc such as SA-talc SW special (12 μm) (manufactured by Miyoshi Kasei Co., Ltd.), talc JA-46R (7.0-11.0 μm) (manufactured by Asada Flour Milling Co., Ltd.);
Silica microbead P-4000 (20 μm), silica microbead P-1505 (10 μm), silica microbead P-1500 (5 μm) (above, manufactured by JGC Catalysts & Chemicals), Sunsphere H-52 (5 μm), Sunsphere Silica such as H-121 (12 μm), Sunsphere NP-100 (10 μm) (manufactured by AGC S-Tech), and A-11 (3 μm), A21-S (23 μm), AB-25S (24 μm) ( As mentioned above, mica such as Yamaguchi Mica Co., Ltd.) can be mentioned.
In the above, the numerical value (μm) described in parentheses represents the number average particle diameter.

  The content of the component (A1) in the skin cosmetic is preferably 0.1% by mass or more in all components except the component (E) from the viewpoint of enhancing the feeling of dryness at the place where the skin cosmetic is applied. , More preferably 0.5% by mass or more, further preferably 1.5% by mass or more, even more preferably 2.5% by mass or more, and preferably 10% by mass or less, more preferably 8% by mass. % Or less, more preferably 6% by mass or less, and even more preferably 4% by mass or less.

(Component (A2))
The component (A2) is a powder other than the component (A1) having a number average particle size of 0.1 μm or more and 10 μm or less.
Examples of the shape of the component (A2) include a plate shape and a spherical shape. Preferably, the component (A2) is a spherical powder. Here, the spherical powder is a substantially spherical powder, and may be a spheroid, a spherical powder having irregularities on the surface, or the like, and does not need to be a perfect sphere.
Further, the component (A2) may be hollow or solid, and the whole or part of the component (A2) may be porous.

  The number average particle diameter of the component (A2) is 0.1 μm or more, preferably 1 μm or more, more preferably 2 μm or more, and 10 μm from the viewpoint of improving the dry feeling of the part to which the skin cosmetic is applied. Or less, preferably 8 μm or less, more preferably 6 μm or less.

  The material of the component (A2) is not limited as long as it is used for ordinary skin cosmetics. Specific examples include polyamide powder, nylon powder, polyester powder, polyethylene powder, polypropylene powder, polystyrene powder, and benzoguanamine resin powder. , Polymethylbenzoguanamine powder, polyurethane powder, vinyl resin powder, fluororesin powder, melamine resin powder, acrylic acid polymer powder, methacrylic acid polymer powder; alkyl methacrylate polymer such as polymethylmethacrylate powder Powder, powder of acrylic resin such as powder of alkyl acrylate polymer; powder of alkylene glycol acrylate polymer; powder of alkylene glycol methacrylate polymer; Silicone powders such as silicone elastomer powder and polymethylsilsesquioxane powder crosslinked with methyl silicone; butyl acrylate / vinyl acetate copolymer powder, styrene / acrylic acid copolymer powder, divinylbenzene / styrene copolymer Poly (meth) acrylic acid, poly (meth) acrylic acid sodium, poly (meth) acrylic acid ester, poly (meth) acrylic, such as (Lauryl methacrylate / ethylene glycol dimethacrylate) copolymer powder Examples thereof include crosslinked or non-crosslinked organic spherical powders such as powders of one or more polymers or copolymers selected from acid alkylene glycols.

  Among the powders described above, from the viewpoint of improving the dry feeling of the part to which the skin cosmetic is applied and from the viewpoint of improving the redispersibility of the powder in the skin cosmetic, the component (A2) is preferably , Nylon powder, polyethylene powder, silicone powder, polymethyl methacrylate powder, acrylic acid polymer powder, methacrylic acid polymer powder, alkyl acrylate polymer powder, alkyl methacrylate polymer powder, alkylene glycol acrylate Combined powder and alkylene glycol polymer powder, and two or more copolymers selected from acrylic acid, methacrylic acid, alkyl acrylate, alkyl methacrylate, alkylene glycol acrylate and alkylene glycol methacrylate More preferably, it is nylon powder, silicone powder, polymethyl methacrylate powder, alkyl acrylate polymer powder, alkyl methacrylate polymer powder, alkyl acrylate and alkyl methacrylate copolymer powder, More preferred is silicone powder.

As the component (A2), more specifically, as a silicone powder, KMP-599 (3 μm), KSP-100 (5 μm), KSP-105 (2 μm), KSP-300 (5 μm), X-52-1621 ( 5 μm) (Shin-Etsu Chemical Co., Ltd.);
Tospearl 120A (2 μm), Tospearl 145A (4.5 μm) (above, manufactured by Momentive Performance Materials Japan);
Trefill E506S (4 μm), Trefill E508 (4 μm), BY29-129 (4 μm) (above, manufactured by Toray Dow Corning);
Gantzpearl GMP-0820 (8 μm) (above, as Gantzpearl GMP-0800 (8 μm), polyacrylic acid as Gantzpearl SI-045C (4.5 μm), Gantzpearl SIG-070 (7 μm), alkyl methacrylate Made by Aika Industries);
As powders of copolymer of alkyl methacrylate and alkylene glycol methacrylate, Matsumoto Microsphere M-201 (4 μm), Matsumoto Microsphere M-305 (8 μm), Matsumoto Microsphere M312 (5.5 μm) (above) Manufactured by Matsumoto Yushi Seiyaku Co., Ltd.)
As the nylon powder, commercially available products such as nylon SP-500 (5 μm) and nylon SP-10 (10 μm) (manufactured by Toray Industries, Inc.) can be used.
In the above, the numerical value (μm) described in parentheses represents the number average particle diameter.

  Among them, as the component (A2), silicone powders KSP-105 (2 μm) (manufactured by Shin-Etsu Chemical Co., Ltd.), X-52-1621 (5 μm) (manufactured by Shin-Etsu Chemical Co., Ltd.), Tospearl 145A (4.5 μm) (Momentive Performance Materials Japan Co., Ltd.), Gantz Pearl SI-045C (4.5 μm) (made by Aika Kogyo Co., Ltd.) can obtain a better feeling of smoothness, and the finish that does not float white This is preferable.

  The content of the component (A2) in the skin cosmetic is the component (E) from the viewpoint of enhancing the redispersibility and adhesion of the skin cosmetic and enhancing the dry feeling of the part to which the skin cosmetic is applied. Is preferably 5% by mass or more, more preferably 10% by mass or more, still more preferably 20% by mass or more, still more preferably 30% by mass or more, and preferably 60% by mass or less. More preferably, it is 55 mass% or less, More preferably, it is 50 mass% or less.

  A specific example of the combination of components (A1) and (A2) is a combination in which component (A1) is talc and component (A2) is silicone powder.

  The mass ratio of the component (A2) to the component (A1) ((A2) / (A1)) is intended to enhance the redispersibility and adhesion of the skin cosmetic, and the dry feeling of the part to which the skin cosmetic is applied From the viewpoint of increasing the viscosity, it is preferably 1 or more, more preferably 5 or more, still more preferably 10 or more, and preferably 50 or less, more preferably 40 or less, and even more preferably 30 or less.

(Ingredient (B))
Component (B) is an ester oil, preferably an ester oil that is liquid at 25 ° C.
Here, the liquid ester oil at 25 ° C. is an ester oil having a melting point of 25 ° C. or lower. That is, the component (B) is an ester oil having fluidity at 25 ° C. preferably at 1 atm. The melting point is measured according to the third method described in the cosmetic raw material standards.

  Specific examples of component (B) include octyldodecyl myristate, isocetyl myristate, glyceryl tri-2-ethylhexanoate, glyceryl triisostearate, propylene glycol isostearate, diethylhexyl sebacate, trimethylpropane tri-2-ethylhexanoate, Di-2-ethylhexyl succinate, propylene glycol di (capryl / capric acid), 2-ethylhexyl 2-cyano-3,3-diphenylacrylate, glyceryl tri (capryl / capric acid), trimethylolpropane trioctanoate, glyceryl tricaprylate , Ethylene glycol dioctanoate, glyceryl dimyristate, diethylene glycol dilaurate, pentaerythritol tetra-2-ethylhexanoate, glyceryl monostearate , Diisostearyl malate, alkyl benzoate (C12-C15), octyldodecyl lactate, propylene glycol monostearate, propylene glycol oleate, oleyl lactate, propylene glycol dicaproate, diisopropyl sebacate, ethylene glycol monostearate, Diethylene glycol dicaprate, neopentyl glycol dicaprate, neopentyl glycol di2-ethylhexanoate, glyceryl coconut oil fatty acid, glyceryl dilaurate, glyceryl sesquioleate, ethylene glycol monooleate, cetyl lactate, diethyl sebacate, castor oil fatty acid Consists of methyl, ethylene glycol palmitate, polyethylene glycol dilaurate and tripropylene glycol dipivalate. It can be exemplified one or two or more selected from the group.

  In addition, the component (B) is preferably an ester of a fatty acid having 12 to 18 carbon atoms and a branched alcohol having 14 to 22 carbon atoms or a higher grade having 12 to 18 carbon atoms from the viewpoint of enhancing the redispersibility of the skin cosmetic. Esters of fatty acids and monohydric alcohols having 2 to 6 carbon atoms, tri (C12-C18 branched fatty acid) glyceryl, C2-C18 dicarboxylic acid di (C2-C18 alkyl), benzoic acid alkyl (C12-C15) (for example, One or more selected from the group consisting of Innospec Active Chemicals LLC Finsolv TN), more preferably octyldodecyl myristate, isocetyl myristate, glyceryl tri-2-ethylhexanoate, isopropyl myristate, sebacine Diisopropyl acid, diethylhexyl sebacate, neopenty di-2-ethylhexanoate Glycol, neopentyl glycol dicaprate, is one or more selected from the group consisting of alkyl benzoate (C12-C15) and diisostearyl malate.

  The content of the component (B) in the skin cosmetic is preferably 2% by mass or more in all components except the component (E) of the skin cosmetic from the viewpoint of improving the adhesion of the skin cosmetic. Preferably it is 5 mass% or more, More preferably, it is 12 mass% or more, More preferably, it is 20 mass% or more. Further, from the viewpoint of improving redispersibility in skin cosmetics and enhancing the feeling of smoothness, the content of component (B) in skin cosmetics is all components except skin cosmetic components (E). Among them, the content is preferably 50% by mass or less, more preferably 40% by mass or less, and further preferably 30% by mass or less.

  Further, the total mass ratio of the contents of the components (A1) and (A2) to the content of the component (B) in the skin cosmetic (((A1) + (A2)) / (B)) From the viewpoint of improving the adhesiveness of the coating material and from the viewpoint of increasing the dry feeling of the part to which the skin cosmetic is applied, it is preferably 0.5 or more, more preferably 1 or more, and preferably 10 or less. More preferably, it is 5 or less, More preferably, it is 3 or less.

Next, the silicones (component (C)) of the components (C1) to (C3) will be described.
(Component (C1))
The component (C1) is a silicone oil that is volatile at 25 ° C., and preferably a liquid silicone oil that is volatile at 25 ° C.
Here, the volatile silicone oil means one having an evaporation amount of 20% or more at 25 ° C. and 6 hours, measured by the following method.
That is, a filter paper having a diameter of 90 mm is placed in a glass petri dish having a diameter of 120 mm, and 1 g of the sample is placed on the filter paper and stored in a room at 25 ° C. and 65% RH. Then, the residue of the sample after 6 hours is measured, and the evaporation amount is calculated.
Further, the silicone oil that is liquid at 25 ° C. is an oil having a melting point of 25 ° C. or lower, and is fluid at 1 ° C. and 25 ° C. The melting point is measured according to the third method described in the cosmetic raw material standards.

The volatile silicone oil is preferably a linear or cyclic organopolysiloxane that is volatile at 25 ° C.
Among these, specific examples of the linear organopolysiloxane include octamethyltrisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane, 1,1,1,3,5,5,5-heptamethyl-3-[( And trimethylsilyl) oxy] -trisiloxane.

  Among the volatile silicone oils, examples of the cyclic organopolysiloxane include 4- to 6-membered cyclic siloxanes having an alkyl group having 1 to 5 carbon atoms as substituents. Specific examples include octamethylcyclotetrasiloxane, Examples include decamethylcyclopentasiloxane.

  Specific examples of commercially available volatile silicone oils include KF-96A-1cs (manufactured by Shin-Etsu Chemical Co., Ltd., octamethyltrisiloxane), KF-96A-1.5cs (manufactured by Shin-Etsu Chemical Co., Ltd., decamethyltetrasiloxane), KF-96A-2cs (manufactured by Shin-Etsu Chemical Co., Ltd., dodecamethylpentasiloxane), KF-995 (manufactured by Shin-Etsu Chemical Co., Ltd., decamethylcyclopentasiloxane), TMF-1.5 (manufactured by Shin-Etsu Chemical Co., Ltd., 1,1 , 1,3,5,5,5-heptamethyl-3-[(trimethylsilyl) oxy] -trisiloxane), SH200C Fluid 1cs (manufactured by Dow Corning Toray, octamethyltrisiloxane), SH200C Fluid 1.5cs (Toray Industries, Inc.) -Dow Corning, Decamethyltetrasiloxane), SH200C Fluid 2c (Toray Dow Corning, Dodecamethylpentasiloxane), SH245 Fluid (Toray Dow Corning, Decamethylcyclopentasiloxane), TSF405 (Momentive Performance Materials, Decamethylcyclopentasiloxane) It is done.

  The content of the component (C1) in the skin cosmetic is preferably 1% in all components except the component (E) of the skin cosmetic from the viewpoint of improving the balance between the improvement of the smooth feeling and the reduction of oiliness. % Or more, more preferably 8% by mass or more, further preferably 10% by mass or more, and preferably 50% by mass or less, more preferably 30% by mass or less, still more preferably 20% by mass or less, Even more preferably, it is 15 mass% or less.

(Component (C2))
The component (C2) is a non-volatile silicone oil at 25 ° C., and preferably a non-volatile liquid silicone oil at 25 ° C.
Here, the non-volatile silicone oil refers to those having an evaporation amount of less than 20% at 25 ° C. for 6 hours, measured by the method described above for the volatile silicone oil of component (C1).
The silicone oil that is liquid at 25 ° C. is as described above for the component (C1).

  Examples of non-volatile liquid silicone oil at 25 ° C. include linear organopolysiloxanes, linear alkylpolysiloxanes having an alkyl group having 1 to 5 carbon atoms, and 1 to 5 carbon atoms. And a linear alkylaryl polysiloxane having an alkyl group and an aryl group having 6 to 10 carbon atoms, more preferably one or two selected from linear dimethylpolysiloxane and linear methylphenylpolysiloxane That's it. Of linear organopolysiloxanes, those having a viscosity at 25 ° C. of 1 to 1000 mPa · s are preferred, and those having a viscosity of 5 to 10 mPa · s are more preferred.

Furthermore, among these, from the viewpoint of suppressing stickiness, maintaining moisture retention and smoothness of the skin, and improving the elongation, the viscosity is preferably 300 mPas or less at 25 ° C., more preferably 150 mPas or less, More preferably, it is 100 mPas or less, for example, low viscosity dimethylpolysiloxane is preferable.
Specifically, the viscosity of the component (C2) was measured using a B-type viscometer TVB-10 (manufactured by Toki Sangyo Co., Ltd.). It is measured under the conditions of 2, 25 ° C., 30 rpm and 1 minute.

  The content of the component (C2) is preferably 0.1% by mass or more in all components excluding the component (E) of the skin cosmetic from the viewpoint of improving the balance between the improvement of the smooth feeling and the reduction of oiliness. More preferably 0.5% by mass or more, further preferably 0.8% by mass or more, and preferably 5% by mass or less, more preferably 3% by mass or less, still more preferably 2% by mass or less. It is.

(Ingredient (C3))
Component (C3) is a silicone-based surfactant, and more specifically, a silicone-based surfactant excluding components (C1) and (C2).
Specific examples of the component (C3) include ether-modified silicones. More specifically, as the ether-modified silicone, a linear chain such as a polyoxyethylene / methylpolysiloxane copolymer, a polyoxyethylene / polydimethylsiloxyethyl dimethicone (specifically, PEG-9 polydimethylsiloxyethyl dimethicone), etc. Type or branched polyether-modified silicone; alkyl-modified polyether-modified silicone (specifically, cetyl PEG / PPG-10 / 1 dimethicone); alkyl-modified polyoxyethylene / polydimethylsiloxyethyl dimethicone (specifically, lauryl) And alkyl chain co-modified polyether-modified silicone such as PEG-9 polydimethylsiloxyethyl dimethicone).

Specific examples of commercially available polyoxyethylene / methylpolysiloxane copolymers include silicone SH3775M (manufactured by Dow Corning), silicone KF6017 (manufactured by Shin-Etsu Chemical Co., Ltd.), silicone KF6015 (manufactured by Shin-Etsu Chemical Co., Ltd.), silicone KF6011 ( Shin-Etsu Chemical Co., Ltd.).
Silicone KF-6028 (manufactured by Shin-Etsu Chemical Co., Ltd.) is a specific example of a commercially available product of PEG-9 polydimethylsiloxyethyl dimethicone.
Specific examples of commercially available cetyl PEG / PPG-10 / 1 dimethicone include KF-6048 (manufactured by Shin-Etsu Chemical Co., Ltd.) and ABIL EM90 (manufactured by Deggusa).
Moreover, silicone KF-6038 (made by Shin-Etsu Chemical Co., Ltd.) is mentioned as a specific example of the commercial item of a lauryl PEG-9 polydimethylsiloxyethyl dimethicone.

  Component (C3) is preferably polyoxyethylene / methylpolysiloxane copolymer, polyoxyethylene / polydimethylsiloxyethyl dimethicone and alkyl-modified polyoxyethylene / polydimethylsiloxy from the viewpoint of enhancing the redispersibility of skin cosmetics. One or more selected from the group consisting of ethyl dimethicone, more preferably a polyoxyethylene-methylpolysiloxane copolymer, PEG-9 polydimethylsiloxyethyl dimethicone and lauryl PEG-9 polydimethylsiloxyethyl One or more selected from the group consisting of dimethicone, and more preferably a polyoxyethylene / methylpolysiloxane copolymer.

  The content of the component (C3) in the skin cosmetic is preferably 0.1% by mass or more in all components except the component (E) of the skin cosmetic from the viewpoint of improving the adhesion of the skin cosmetic. More preferably, it is 0.5 mass% or more, More preferably, it is 0.8 mass% or more, More preferably, it is 1.1 mass% or more. Further, from the viewpoint of improving redispersibility in skin cosmetics and enhancing the dry feeling of the part to which skin cosmetics are applied, the content of component (C3) in skin cosmetics is In all the components except component (E), the amount is preferably 5% by mass or less, more preferably 3% by mass or less, still more preferably 2% by mass or less, and still more preferably 1.5% by mass or less.

(Component (D))
Component (D) is ethanol.
In the stock solution composed of all components except the component (E) in the skin cosmetic, the content of the component (D) can be the remainder excluding the components other than the component (D) in the stock solution.

In addition, the content of the component (D) in the skin cosmetic is preferably 0.1% by mass or more in all components except the component (E) from the viewpoint of enhancing the dry feeling of the part to which the skin cosmetic is applied. More preferably, it is 1% by mass or more, more preferably 3% by mass or more, and still more preferably 5% by mass or more.
Further, from the viewpoint of enhancing the redispersibility and adhesion of the skin cosmetic and from the viewpoint of enhancing the dry feeling of the part to which the skin cosmetic is applied, the content of the component (D) of the skin cosmetic is the component (E ), Preferably 30% by mass or less, more preferably 20% by mass or less, still more preferably 12% by mass or less, and still more preferably 8% by mass or less.

Further, the mass ratio of the total content of the components (A1), (A2) and (B) to the total content of the components (C1) and (D) in the skin cosmetic ((A1) + (A2) + (B)) / ((C1) + (D)) is from the viewpoint of enhancing the redispersibility and adhesion of the skin cosmetic and from the viewpoint of increasing the smoothness of the part to which the skin cosmetic is applied. It is 5 or more, preferably 1 or more, more preferably 2 or more, still more preferably 3 or more, still more preferably 3.8 or more, and even more preferably 3.9 or more.
Further, from the viewpoint of enhancing the redispersibility of the skin cosmetic and enhancing the smoothness of the part to which the skin cosmetic is applied, the above mass ratio ((A1) + (A2) + (B)) / ((C1) + (D)) is 20 or less, preferably 15 or less, more preferably 12 or less, even more preferably 10 or less, even more preferably 5 or less, even more preferably 4.3 or less. It is.

(Ingredient (E))
Ingredient (E) is a propellant.
Specific examples of the propellant of component (E) include one or more selected from liquefied natural gas (LPG), dimethyl ether (DME), carbon dioxide gas, nitrogen gas, a mixture thereof, and the like. Further, alternative chlorofluorocarbons such as HFC-152a can be used.
The boiling point of the propellant of component (E) is, for example, −50 ° C. or higher, preferably −40 ° C. or higher, for example, 0 ° C. or lower, preferably −20 ° C. or lower, from the viewpoint of obtaining a good cooling feeling. It is. A further preferred example of component (E) is LPG.

  The content of the propellant of the component (E) in the skin cosmetic is the component (E) from the viewpoint of obtaining a good cooling feeling and improving the feeling of use while suitably attaching the skin cosmetic to the skin. Ratio of the stock solution composed of the components excluding the component (E) in the skin cosmetic, that is, the components (A1), (A2), (B), (C), (D) and optional components with respect to the propellant of The (stock solution / propellant) is preferably 1/99 or more, more preferably 3/97 or more, still more preferably 5/95 or more, and preferably 60/40 or less, more preferably 40/60. Hereinafter, it is more preferably 20/80 or less.

  The amount of component (E) is such that the pressure in the pressure-resistant container filled with the skin cosmetic is, for example, 0.15 MPa to 0.40 MPa, preferably 0.18 MPa to 0.35 MPa at a temperature of 25 ° C. Alternatively, it is preferable to adjust the ratio.

Moreover, the skin cosmetic in this embodiment may contain components other than the component mentioned above.
For example, the skin cosmetic in the present embodiment may further contain an oil agent other than the components (B), (C1), (C2) and (C3).
Specific examples of oils other than components (B), (C1), (C2) and (C3) include hydrocarbon oils, higher fatty acids, higher alcohols, triglycerin and the like.

When the skin cosmetic contains an oil agent other than the components (B), (C1), (C2) and (C3), from the viewpoint of improving the redispersibility of the skin cosmetic, the components (B), (C1), ( The oil agent other than C2) and (C3) preferably contains a non-volatile liquid oil at 25 ° C.
Here, the non-volatile oil at 25 ° C. means an oil whose evaporation amount at 25 ° C. for 6 hours is less than 20%, which is measured by the method described above for the volatile silicone oil of component (C1).
In addition, the oil that is liquid at 25 ° C. is an oil having a melting point of 25 ° C. or less described above for the volatile silicone oil of component (C1).

  Examples of the liquid hydrocarbon oil that is nonvolatile at 25 ° C. include liquid paraffin, liquid isoparaffin (for example, Pearl Reme EX, manufactured by NOF Corporation), liquid ozokerite, squalane, pristane, squalene, isohexadecane, and the like.

  Examples of liquid higher fatty acids that are non-volatile at 25 ° C. include non-volatile liquid fatty acids having 12 to 22 carbon atoms at 25 ° C., and more specifically, oleic acid, isostearic acid, linoleic acid And linolenic acid.

Examples of the liquid higher alcohol that is nonvolatile at 25 ° C. include a liquid alcohol that is nonvolatile at 25 ° C. having 12 to 22 carbon atoms, and more specifically, oleyl alcohol, 2-decyltetradecyl alcohol. Nol, lanolin alcohol, dodecanol, isostearyl alcohol, octyldodecanol.
Further, the oil agent other than the components (B), (C1), (C2) and (C3) may be of natural origin such as olive oil.

Furthermore, as an oil agent other than components (B), (C1), (C2) and (C3), among non-volatile liquid oils at 25 ° C., suppression of stickiness, moisture retention and smoothness of skin smoothness, and From the viewpoint of improving the elongation, the viscosity is preferably 300 mPas or less at 25 ° C., more preferably 150 mPas or less, still more preferably 100 mPas or less. For example, hydrocarbon oil liquid paraffin and liquid isoparaffin are preferable. .
In addition, the viscosity of oil agents other than components (B), (C1), (C2), and (C3) is specifically determined using a B-type viscometer TVB-10 (manufactured by Toki Sangyo Co., Ltd.). . It is measured under the conditions of 2, 25 ° C., 30 rpm and 1 minute.

  Among the oils other than the components (B), (C1), (C2) and (C3), the content of the liquid liquid that is non-volatile at 25 ° C. in the skin cosmetics improves the dry feeling and the oiliness. From the viewpoint of increasing the balance with the reduction of the amount of skin cosmetics, the content is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and preferably 0.5% by mass or more in all components except the component (E) of the skin cosmetic. Is 5% by mass or less, more preferably 3% by mass or less, and still more preferably 2% by mass or less.

  In addition, the skin cosmetic of the present embodiment includes components other than those described above, for example, surfactants other than the component (C3), bactericides such as isopropylmethylphenol, cooling agents such as menthol, moisturizers, beauty Plants such as components, medicinal components, thickeners, bactericides, pH adjusters, antioxidants such as dibutylhydroxytoluene, preservatives, alcohols having 1 to 4 carbon atoms other than component (D), yellowfin extract, etc. Ingredients used in extracts, perfumes and other normal cosmetics can also be included. Each of these agents is not limited to the use as each agent. Depending on the purpose, for example, a cooling sensation agent may be used as a fragrance, or as a combination with other uses, for example, a cooling sensation agent and a fragrance. It can be used as one that produces the effects as described above.

  Furthermore, in the skin cosmetic of the present embodiment, the content of water is preferably 1% by mass or less in the total composition excluding the component (E) from the viewpoint of obtaining a uniform and good appearance composition. % By mass or less is more preferable, 0.1% by mass or less is more preferable, 0.05% by mass or less is further more preferable, 0.01% by mass or less is further preferable, and substantially 0% by mass is even more preferable.

  In the skin cosmetic of the present embodiment, the content of the thickener is preferably 3% by mass or less, more preferably 2% by mass or less in the total composition excluding the component (E) from the viewpoint of realizing a good spray state. It is preferably 1% by mass or less, more preferably 0.05% by mass or less, still more preferably 0.01% by mass or less, and still more preferably 0% by mass. By ensuring a good spray state, unevenness during application of skin cosmetics such as application to the skin and unevenness of skin cosmetics can be improved. For this reason, the persistence of suppression of stickiness and the persistence of the smooth feeling in the part to which skin cosmetics were applied can be improved.

Next, the manufacturing method of the skin cosmetics in this embodiment is demonstrated.
The skin cosmetic in the present embodiment is, for example,
Mixing a component other than the propellant of component (E) and dissolving or dispersing to prepare a stock solution;
Filling the pressure-resistant container with the stock solution obtained in the above step together with the propellant of component (E);
It is manufactured by the method containing.
As the pressure-resistant container, those used for ordinary aerosol preparations can be used.

  In the present embodiment, components (A1), (A2), (B), (C1), (C2), (C3), (D) and (E) are used in combination, and components (C1) and (C Mass ratio of the total content of components (A1), (A2) and (B) to the total content of D) ((A1) + (A2) + (B)) / ((C1) + (D) ) Is in a specific range, it is possible to obtain a skin cosmetic that is excellent in redispersibility and adhesion and that provides a favorable feeling of use. For example, it is possible to suppress the stickiness of the part to which the skin cosmetic is applied, and to obtain a skin cosmetic excellent in a smooth feeling.

  More specifically, as the components (A1) and (A2), a plurality of different powders are combined and blended, and the proportions of the components (A1), (A2), (B), (C1) and (D) By setting the above mass ratio to a specific range, it is possible to improve the adhesion of the skin cosmetic and improve the unevenness during application to the skin and the like and the unevenness of the skin cosmetic. For this reason, a preferable feeling of use can be stably obtained also about the provision of the smooth feeling to the application site | part of skin cosmetics. Moreover, the redispersibility of the powder in skin cosmetics can also be improved.

The skin cosmetic in the present embodiment can be used by applying it to any of the face, body, limbs, etc. excluding the skin, preferably the scalp. Moreover, the skin cosmetics of this embodiment can also be used for scalp and hair.
Further, the skin cosmetics of the present embodiment can be applied to, preferably applied to, the skin, so that the skin feels smooth.

  As mentioned above, although embodiment of this invention was described, these are illustrations of this invention and various structures other than the above are also employable.

(Examples 1-10 and Comparative Examples 1-4)
Skin cosmetics having the compositions shown in Table 1 were produced, and the adhesion rate of the skin cosmetics, smooth feeling, and powder redispersibility were evaluated by the methods described below. The results are also shown in Table 1.
In the following examples, each raw material is blended so that the content of each component in the obtained skin cosmetic is as shown in Table 1 according to the amount of the component contained in the raw material. I got a fee.

(Method for manufacturing skin cosmetics)
Among the components shown in Table 1, all components except the propellant were mixed and dispersed with a disper to prepare a stock solution composed of the mixed powder and the oil phase.
The obtained stock solution was filled into a pressure-resistant container (spray can) together with a propellant (LPG) to obtain an aerosol formulation of the skin cosmetic of each example. The mass ratio (stock solution / propellant) between the stock solution and the propellant in the aerosol formulation was 8/92.

(Evaluation method)
(Adhesion rate)
The discharge port of the spray can containing the skin cosmetic was separated from the filter paper by 10 cm, the skin cosmetic was sprayed on the filter paper for 2 seconds, and the weight was measured after 1 minute.
From the change in weight of the spray can before and after the injection, the amount of the injected liquid (excluding the propellant) was calculated.
And the ratio (%) of the liquid agent (except a propellant) adhering to the filter paper with respect to the injected liquid agent was calculated.

(Smooth feeling)
When three professional panelists sprayed the skin cosmetics of each case on the arm for 1 second, the degree of smooth feeling was evaluated according to the following criteria.
5: Very smooth 4: Smooth 2: Normal 2: Inferior 1: Very inferior The total of the three evaluation points was evaluated according to the following criteria.
◎: 14 points or more ○: 12-13 points Δ: 9-12 points ×: 8 points or less

(Redispersibility of powder)
Each skin cosmetic stock solution in each case was placed in a glass sample bottle, sealed, and stored upright for 1 month in a thermostatic chamber at -5 ° C. About the skin cosmetics after a preservation | save, the number of times until it was judged that the sample bottle was laid down from the erect side and it was re-dispersed uniformly by visual observation was measured. The redispersibility of the powder was evaluated based on the number of times.
◎: Within 5 times ○: Within 10 times △: Within 15 times ×: Over 16 times

The components used in Examples or Comparative Examples are shown below.
* 1 SA-talc: SA-talc SW special, number average particle size 12 μm, manufactured by Miyoshi Kasei Co., Ltd. * 2 Crosslinkable silicone / network type silicone block copolymer: Silicone KSP-105 (-G), number average particle size 2 μm * 3 Methylsiloxane network polymer: Tospearl 145A, number average particle diameter 4.5 μm, manufactured by Momentive Performance Materials Japan * 4 Cross-linked polyacrylate: Matsumoto Microsphere M-503B (Particle diameter 10 μm or more), number average particle diameter 20 μm, manufactured by Matsumoto Yushi Seiyaku Co., Ltd. * 5 Isopropyl myristate: Exepal IPM, manufactured by Kao Corporation (liquid ester oil at 25 ° C.)
* 6 Alkyl benzoate (C12-15): Finsolv TN (TN-O), manufactured by Innospec Active Chemicals LLC (ester oil liquid at 25 ° C)
* 7 Methyl polysiloxane: Silicone KF-96L-2cs, manufactured by Shin-Etsu Chemical Co., Ltd. (viscosity at 25 ° C. is 2 cs or less)
* 8 Methylpolysiloxane: Silicone KF-96A-6cs, manufactured by Shin-Etsu Chemical Co., Ltd. (viscosity at 25 ° C. is 5 cs or more)
* 9 Polyoxyethylene / methylpolysiloxane copolymer: Silicone SH3775M, manufactured by Dow Corning * 10 Hydrocarbon oil: Pearl Ream EX, manufactured by NOF Corporation * 11 Oleic acid: LUNAC O-V (oleic acid), Kao Corporation * 12 Ethanol: 99-degree synthetic alcohol, manufactured by Nippon Alcohol Sales Co., Ltd. * 13 Alum extract and isopropyl myristate mixture: yellowfin extract EHI, manufactured by Tianjin Maizuru Biopharmaceutical Co., Ltd. * 14 Fragrance: U-YBSS-1, Kao * 15 Liquefied petroleum gas: Liquefied petroleum gas (LPG20 ° C. 0.15 MPa)

  From Table 1, the skin cosmetics described in each example contain components (A1), (A2), (B), (C1), (C2), (C3), (D) and (E). , Mass ratio ((A1) + (A2) + (B)) / ((C1) + (D)) is in a specific range, so that the adhesion rate of skin cosmetics to those described in each comparative example Thus, a skin cosmetic having an excellent balance of effects with respect to the redispersibility of the powder and the smooth feeling was obtained.

Claims (4)

The following components (A1), (A2), (B), (C1), (C2), (C3), (D) and (E):
(A1) Number average particle diameter of 0.1 μm or more and 30 μm or less, and one or more powders selected from the group consisting of talc, silica and mica,
(A2) Powder other than the component (A1) having a number average particle size of 0.1 μm or more and 10 μm or less,
(B) ester oil,
(C1) volatile silicone oil,
(C2) non-volatile silicone oil,
(C3) silicone surfactant,
(D) A skin cosmetic containing ethanol and (E) a propellant,
Mass ratio of the total content of the components (A1), (A2) and (B) to the total content of the components (C1) and (D) in the skin cosmetic ((A1) + (A2) + (B)) / ((C1) + (D)) is a skin cosmetic that is 0.5 or more and 20 or less.   The skin cosmetic according to claim 1, further comprising an oil agent other than the components (B), (C1), (C2) and (C3).   The total mass ratio (((A1) + (A2)) / (B)) of the contents of the components (A1) and (A2) to the content of the component (B) in the skin cosmetic is 0. The skin cosmetic according to claim 1 or 2, which is 5 or more and 10 or less.   The mass ratio ((A2) / (A1)) of the content of the component (A2) to the content of the component (A1) in the skin cosmetic is 1 or more and 50 or less. The skin cosmetic according to Item 1.