JP2010184885A - Powder-containing water-in-oil type emulsion cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a powder-containing water-in-oil type emulsion cosmetic excellently preventing coming off of makeup and migration of color, providing light touch feeling at coating, hardly exhibiting sticky feeling and starchy feeling after coating, and having excellent preservation stability. <P>SOLUTION: The powder-containing water-in-oil type emulsion cosmetic contains (A) 0.3-5 mass% of a surfactant in a type of a fatty acid ester of a polyhydric alcohol, having ≤6 of an HLB value and liquid at 25°C, (B) 10-40 mass% of a volatile oil, (C) 0.1-30 mass% of an alkylsilsesquioxane resin in a liquid or paste shape at 25°C, and (D) 0.5-20 mass% of titanium oxide. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a powder-containing water-in-oil emulsified cosmetic, more specifically, excellent in preventing makeup collapse and color transfer, light in touch when applied, and without sticky or stiff feeling after application, for storage stability. The present invention relates to a powder-containing water-in-oil emulsified cosmetic which is suitable as a makeup cosmetic and a sunscreen cosmetic.

The water-in-oil type emulsified cosmetic is an agent whose outer phase is an oily agent, and therefore easily imparts water resistance to the coating film, and is a dosage form that has been frequently used in recent years for emulsified type foundations and sunscreens. However, in the environment of hot summer days and intense exercise such as sports, even a water-in-oil dosage form has caused makeup collapse. Trimethylsiloxysilicic acid, which is a kind of silicone resin, is generally used in order to prevent makeup collapse even under such harsh environments (see Patent Document 1). However, since trimethylsiloxysilicic acid becomes very hard when it becomes a film, it has a drawback that it gives a sense of incongruity on the skin and the feeling of touch when applied. Furthermore, if the amount of trimethylsiloxysilicic acid is increased in order to prevent makeup collapse, it is difficult to emulsify and it is difficult to obtain satisfactory storage stability.
JP 2007-182402 A

  Therefore, the object of the present invention is to eliminate the above-mentioned drawbacks, excellent in preventing cosmetic discoloration and color transfer, light in touch when applied, and not sticky or stiff after application, and excellent in storage stability. The object is to provide a powder-containing water-in-oil emulsified cosmetic.

  The above-mentioned purpose is based on the total amount of cosmetics (A) 0.3 to 5% by mass of a polyhydric alcohol fatty acid ester type surfactant having an HLB value of 6 or less and liquid at 25 ° C., and (B) volatilization. 10 to 40% by mass of a natural oil, (C) 0.1 to 30% by mass of a liquid or pasty alkylsilsesquioxane resin at 25 ° C., and (D) 0.5 to 20% by mass of titanium oxide This is achieved by a powder-containing water-in-oil emulsified cosmetic.

  The present invention provides a powder-containing water-in-oil emulsified cosmetic that is excellent in preventing cosmetic discoloration and color transfer, has a light touch when applied, and has no sticky or stiff feeling after application, and has excellent storage stability. be able to.

  Examples of the polyhydric alcohol fatty acid ester type surfactant (A) having an HLB value of 6 or less used in the present invention and liquid at 25 ° C. include sorbitan fatty acid ester and diglycerin fatty acid ester. Particularly preferred are sorbitan monoisostearate, sorbitan monooleate, sorbitan sesquiisostearate, sorbitan sesquioleate, diglyceryl monoisostearate, diglyceryl monooleate, and the like.

The blending amount of the polyhydric alcohol fatty acid ester type surfactant (A) having an HLB value of 6 or less used in the present invention and being liquid at 25 ° C. is 0.00 on the basis of the total amount of the powder-containing water-in-oil emulsified cosmetic.
It is 3-5 mass%, Most preferably, it is 1-3 mass%. When the blending amount is less than 0.3% by mass, satisfactory storage stability cannot be obtained. On the other hand, when it exceeds 5% by mass, the stickiness of the liquid surfactant itself is strongly felt, and the coating is applied. The feeling of time becomes heavy. In addition, the HLB value in this invention means what is calculated by the following Kawakami formula (I).
HLB = 7 + 11.7 log (Mw / Mo) (I)
Here, in the formula (I), Mw represents the molecular weight of the hydrophilic base and Mo represents the molecular weight of the lipophilic base.

As the volatile oil (B) used in the present invention, any oil that has volatility at room temperature (25 ° C.) and is generally used in cosmetics can be used. For example, a linear silicone having a degree of polymerization of 0-5, a cyclic silicone having a degree of polymerization of 3-7, such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and the general formula [(CH ₃ ) ₃ SiO] ₃ SiCH ₃ , methyltrimethicone represented by general formula [(CH ₃ ) ₃ SiO] ₄ Si, branched dimethylpolysiloxane such as tetrakistrimethylsiloxysilane, hydrogenated polyisobutene, isohexadecane, isododecane And branched hydrocarbons. In particular, when a branched tetramer dimethylpolysiloxane and isododecane are used, the feel at the time of application is further reduced, and the stickiness after application is particularly excellent.

  The blending amount of the volatile oil (B) used in the present invention is 10 to 40% by mass, particularly preferably 15 to 30% by mass, based on the total amount of the powder-containing water-in-oil emulsified cosmetic. If the blending amount is less than 10% by mass, an excellent feeling of use cannot be obtained.

The (C) alkyl silsesquioxane resin used in the present invention is liquid or pasty at room temperature (25 ° C.), and is solid (powder) that is completely solidified at 25 ° C. It is not included in the component (C) of the present invention. The (C) alkyl silsesquioxane resin used in the present invention is compatible with (B) volatile oil, and therefore has a property of forming a film by volatilization of volatile oil on the skin. . As the (C) alkyl silsesquioxane resin used in the present invention, for example, those described in JP-A-4-312511 can be used, and specifically, from R ¹ SiO _1.5 unit. Silanol group-containing organopolysilsesquioxane (wherein R ¹ represents a substituted or unsubstituted monovalent hydrocarbon group) with respect to 100 parts by mass, (R ² ₃ Si) _a Z (wherein R 1 ² represents a substituted or unsubstituted monovalent hydrocarbon group, a represents 1 or 2, Z represents a hydrogen atom, a hydroxyl group or a hydrolyzable group when a is 1, and when a is 2, − O—, —N (X) —, —S—, wherein X represents a hydrogen atom, a monovalent hydrocarbon group having 1 to 4 carbon atoms or R ² ₃ Si—. reacting a 100 parts by weight are those ^obtained, R _{1 SiO 1.5} single 50-99 _^mol%, and silicone resins composed of R 2 _{3 SiO 0.5} units 1-50 mol%. In particular, the use of 670 FLUID manufactured by Toray Dow Corning is preferable from the viewpoint of functionality (such as prevention of makeup collapse) and usability (feel, etc.) as a cosmetic. The 670 FLUID is a mixture of about 50 parts by mass of polypropylsilsesquioxane and about 50 parts by mass of decamethylcyclopentasiloxane, but the alkylsilsesquioxane resin may be used as it is.

  The blending amount of the (C) alkyl silsesquioxane resin used in the present invention is 0.1 to 30% by mass, particularly preferably 1 to 10% by mass, based on the total amount of the powder-containing water-in-oil emulsified cosmetic. %. If the blending amount is less than 0.1% by mass, the effect of preventing makeup collapse is weak, and if it exceeds 30% by mass, the weight of spreading at the time of application occurs.

(D) Titanium oxide used in the present invention is usually used in cosmetics, paints, etc., and if necessary, those treated with alumina, silica, zinc white, or those treated with hydrophobic silicone are used. It is done.

  The blending amount of (D) titanium oxide used in the present invention is 0.5 to 20% by mass, particularly preferably 3 to 10% by mass, based on the total amount of the powder-containing water-in-oil emulsified cosmetic. If the blending amount is less than 0.5% by mass, the hiding effect is low, and the purpose as a makeup cosmetic or sunscreen cosmetic cannot be achieved. On the other hand, if it exceeds 20% by mass, the feel becomes heavy. End up.

  The (E) trimethylsiloxysilicic acid used in the present invention is not particularly limited as long as it is generally used in cosmetics, and any one can be used. BY11-018 manufactured by Toray Dow Corning Co., Ltd. is preferably used from the viewpoint of functionality (prevention of makeup collapse) and usability (feel, etc.) as a cosmetic.

As the (F) fluoro-modified silicone resin used in the present invention, the general formula R ³ _n SiO _{(4-2) / 2} described in JP-A-9-12431 [wherein R ³ has 1 to 8 carbon atoms] A hydrocarbon group, a phenyl group, a hydroxyl group, or a general formula —R ⁴ —Rf, which is arbitrarily selected from a functional group essentially comprising a hydroxyl group and a general formula —R ⁴ —Rf, wherein R ⁴ has 2 to 2 carbon atoms. 6 is a divalent alkylene group, Rf is a C 1-8 perfluoroalkyl group, and n is an average number of 1.0 ≦ n ≦ 1.8. ]. In addition, XS66-B8226 manufactured by Momentive Performance Materials, Inc. is preferably used from the viewpoint of functionality (prevention of makeup collapse) and usability (feel, etc.) as a cosmetic.

  The blending amount of (E) trimethylsiloxysilicic acid and / or (F) fluoro-modified silicone resin used in the present invention is 0.1 to 30% by mass based on the total amount of the powder-containing water-in-oil emulsified cosmetic. Especially preferably, it is 1-10 mass%. Within this range, it is possible to obtain a further excellent makeup-breaking prevention effect and an excellent feel during application.

  In addition to the above essential components, the powder-containing water-in-oil emulsified cosmetic of the present invention contains an oil component, a moisturizer, an emulsifier, a fragrance, an ultraviolet absorber, an antiseptic, a plant extract, a pigment, and the like as necessary. Can be blended.

  EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is further explained in full detail, this invention is not limited by this.

[Evaluation methods]
(1) Usage characteristics test Each sample of Examples and Comparative Examples was applied to the faces of 20 female panelists, and the usage characteristics were determined according to the number of respondents who replied "good makeup" and "smooth touch". evaluated. The evaluation criteria are as follows.

(Evaluation criteria)
Number of people is 17 or more; ◎
12-16 people; ○
8-11 people; △
Number of people is 7 or less; ×

(2) Storage stability test The sample was allowed to stand in a thermostatic bath at 0 ° C, 25 ° C and 45 ° C, and the storage stability after 3 weeks was evaluated according to the following criteria.

(Evaluation criteria)
No oil blinding; ○
Slight oil smudge; △
There is oil smearing; ×

<Preparation method of powder-containing water-in-oil emulsified cosmetic>
Heat the oil phase component to 80 ° C., disperse the powder in this, add the water phase component that has been heated at 80 ° C. in advance, stir and cool to room temperature after emulsification, and the desired powder-containing water-in-oil type An emulsified cosmetic is obtained.

<Examples 1-6, Comparative Examples 1-4 Emulsification Foundation>
An emulsion foundation having the composition described in Table 1 was produced by the above preparation method, and the above tests were performed. The results are also shown in Table 1.

  As shown in Table 1, the emulsification foundations of Examples 1 to 6 are clearly superior to the emulsification foundations of Comparative Examples 1 to 4 in all aspects of cosmetic durability, use characteristics, and storage stability.

Example 7 Sunscreen Cream Oil Phase (mass%)
Sorbitan monoisostearate 2.5
Decamethylcyclopentasiloxane 10.0
Isododecane 5.0
2-Ethylhexyl paramethoxycinnamate 7.0
Propylene glycol dicaprylate 3.0
Isononyl isononanoate 3.0
Polyalkylsilsesquioxane * 2 5.0
Trimethylsiloxysilicate * 3 5.0
Glyceryl tribehenate 1.5
Soybean hydrogenated lecithin 0.2
Aqueous glycerin 3.0
Chlorphenesin 0.2
Sodium dehydroacetate 0.1
Purified water to 100.0
Sage extract 0.1
Hydrolyzed silk 0.1
Powdered silicone-treated fine particle titanium oxide 5.0

* 2: 670 FLUID (Toray Dow Corning)
* 3: BY11-018 (Toray Dow Corning)

Production method Heat the oil phase component to 80 ° C., disperse the powder in this, add the water phase component heated in advance at 80 ° C., and after emulsification, stir and cool to room temperature. A water-type emulsified cosmetic is obtained.

Example 8 Emulsification foundation Oil phase (mass%)
Sorbitan monoisostearate 1.0
Polyether-modified silicone mixture * 5 3.0
Decamethylcyclopentasiloxane 10.0
Methyltrimethicone 3.0
Polyalkylsilsesquioxane * 2 2.0
Trimethylsiloxysilicate * 3 2.0
Isononyl isononanoate 3.0
Cross-linked methylpolysiloxane dispersion * 6 2.0
2-Ethylhexyl paramethoxycinnamate 4.0
Glyceryl tribehenate 0.8
Soybean-derived hydrogenated lecithin 0.2
Aqueous phase dipropylene glycol 3.0
Glycerin 3.0
Chlorphenesin 0.2
Phenoxyethanol 0.3
Hydrolyzed conchiolin 0.1
Olive leaf extract 0.1
Laminaria blue squid extract 0.1

Purified water to 100.0
Powdered titanium oxide 8.0
Iron oxide 1.0
Talc 3.0
Nylon-12 powder 1.5
* 5: BY22-008M (contains 10% polyether-modified silicone, 88% cyclic pentamer silicone, 2% water, manufactured by Toray Dow Corning)
* 6: KSG-16 (manufactured by Shin-Etsu Chemical Co., Ltd.)

Production method Heat the oil phase component to 80 ° C., disperse the powder in this, add the water phase component heated in advance at 80 ° C., and after emulsification, stir and cool to room temperature. A water-type emulsified cosmetic is obtained.

Example 9 Emulsification foundation Oil phase (mass%)
Diglyceryl monoisostearate 1.0
Polyether-modified silicone * 7 0.3
Decamethylcyclopentasiloxane 12.0
Alkyl-modified linear trimer silicone * 8 3.0
Polyalkylsilsesquioxane * 2 5.0
Α-Olefin Oligomer with C ₃₀ as Main Component 5.0
Neopentyl glycol diethylhexanoate 2.0
Glyceryl tribehenate 1.0
Egg yolk-derived hydrogenated lecithin 0.15
Aqueous phase 1,3-butylene glycol 5.0
Sorbitol 3.0
Phenoxyethanol 0.5
Juzdama extract 0.3
Cha extract 0.3
Black tea extract 0.3
Purified water to 100.0
Powdered titanium oxide 8.0
Iron oxide 1.0
Talc 4.0
Bengala, titanium oxide, aluminum oxide coated mica 0.1
Polyalkyl acrylate 0.5
* 7: KF-6028 (manufactured by Shin-Etsu Chemical Co., Ltd.)
* 8: SS-3408 (Toray Dow Corning)

Production method Heat the oil phase component to 80 ° C., disperse the powder in this, add the water phase component heated in advance at 80 ° C., and after emulsification, stir and cool to room temperature. A water-type emulsified cosmetic is obtained.

Claims (3)

Based on the total amount of cosmetics, (A) a polyhydric alcohol fatty acid ester type surfactant having an HLB value of 6 or less and liquid at 25 ° C., and (B) 10% of volatile oil. 40% by mass, (C) 0.1 to 30% by mass of liquid or pasty alkylsilsesquioxane resin at 25 ° C., and (D) 0.5 to 20% by mass of titanium oxide Powder-containing water-in-oil emulsified cosmetic. The powder-containing water-in-oil emulsion cosmetic according to claim 1, further comprising (E) trimethylsiloxysilicic acid and / or (F) a fluoro-modified silicone resin. (B) The volatile oil is branched tetramer dimethylpolysiloxane and / or isododecane, powder-containing water-in-oil emulsified cosmetic according to claim 1 or 2.