JP4934658B2 - O / F emulsion composition - Google Patents

Description

  The present invention relates to a cosmetic that stably contains a fluorine-based oil agent and other oil agents, exhibits sufficient water and oil repellency by the fluorine-based oil agent, does not cause makeup collapse, and has a long-lasting cosmetic effect.

  Fluorine-based oils have water and oil repellency, lubrication properties, and are chemically stable, and thus are used in a wide range of fields such as cosmetics, paints, and pharmaceuticals. In particular, in cosmetics, a fluorinated oil is often blended for the purpose of preventing makeup collapse due to sweat or sebum (Patent Documents 1 and 2). However, these fluorine-based oils have poor compatibility with cosmetic oils such as hydrocarbon oils, silicone oils, ester oils and ether oils, and therefore it is difficult to uniformly mix them. Therefore, in many cases, uniform compositions have been prepared by adding fluorine-based surfactants, nonionic surfactants, and the like (Patent Documents 3 to 11). However, the addition of a surfactant is not preferable because it reduces the water and oil repellency, which is a characteristic of a fluorinated oil. In particular, the effect is significant in makeup cosmetics.

Moreover, there exists a method of adding powder instead of surfactant etc. (nonpatent literatures 1-7). In general, when a powder is added to a composition composed of a plurality of liquid phases that are incompatible with each other, the powder is dispersed or precipitated in each liquid phase. However, when powders having affinity for each liquid are used, the powders are adsorbed at the liquid-liquid interface like surfactants, reducing the interfacial tension and consequently improving the stability of emulsification. Sometimes, a stable emulsion may be formed even though no surfactant is used. For example, Non-Patent Document 4 discloses a water-in-oil type or oil-in-water type emulsification in which a water-oil mixture is added with hydrophobized silica, montmorillonite, clay minerals such as talc, and powder such as fish scales. Things are listed. Since these powders have characteristics that are compatible with water and oil, they are adsorbed at the water-oil interface to form an emulsification system. Formation and stabilization of an oil-in-water type and a water-in-oil type emulsion system using such powders are used for liquid cosmetics such as lotions.
JP 63-107911 A JP-A-2-295912 Japanese Patent Laid-Open No. 62-223105 JP 63-2916 A Japanese Patent Laid-Open No. 4-100534 JP-A-4-224506 Japanese Patent Laid-Open No. 4-187617 JP-A-6-179809 Japanese Patent Laid-Open No. 7-17831 Japanese Patent Laid-Open No. 7-33622 JP-A-7-277927 J. Chem. Soc. 1907, 9, 2001 J. Am. Chem. Soc. 1923, 45, 2780 J. Am. Chem. Soc. 1919, 41, 940 IFSCC VIIIth International Congress 1974, A8 Colloids Surf. 1984, 12, 271 Colloids Surf. 1989, 38, Langmuir2000, 16, 2538 Langmuir2000, 16, 8622

However, even when powders such as hydrophobized silica were added to cosmetics in which a fluorine-based oil and an incompatible oil were made into one phase, powder interfacial adsorption and emulsification system formation were not observed.
The objective of this invention is providing the O / F emulsion composition and F / O emulsion composition which stabilized the fluorine-type oil agent and oil agent which are mutually incompatible with powder.

  The present inventor has developed a water repellent / oil repellent treatment of a powder in which a portion having a high affinity with a fluorinated oil agent and a portion having a high affinity with another oil agent are mixed, for example, a specific resin powder or organic powder.・ When water-repellent oleophilic processed products are added to a heterogeneous mixture comprising a fluorinated oil and other oils, a fluorinated oil-medium-oil type (O / F type) or an oil-medium-fluorine type oil type (F / O) It was found that an emulsified composition of type) was obtained. In addition, when these emulsified compositions are blended into cosmetics, the water- and oil-repellency due to the fluorine-based oil agent is sufficiently exerted, the cosmetics are not easily broken by sweat and sebum, and the cosmetic effect is maintained for a long time. I found it.

The present invention includes the following components (A), (B) and (C):
(A) fluorinated oil 30 to 90% by weight,
(B) 1-30% by weight of an oil that is incompatible with component (A)
(C) Powder obtained by subjecting powder having surface tension of 20 to 50 mN / m to water / oil repellency treatment
5-50% by weight
And an O / F emulsion composition in which component (C) is localized at the interface between component (A) and component (B).

The present invention also includes the following components (D), (E) and (F):
(D) 1 to 30% by weight of a fluorinated oil,
(E) 10 to 75% by weight of an oil that is incompatible with component (D)
(F) Powder obtained by subjecting a powder having a surface tension of less than 20 mN / m to a water-repellent oleophilic treatment
10 to 75% by weight
And an F / O emulsion composition in which component (F) is localized at the interface between component (D) and component (E).

  The O / F emulsified composition and the F / O emulsified composition of the present invention have excellent stability because the powder is localized at the interface between the O phase and the F phase. It is fully exerted, makes it difficult for makeup to break down due to sweat and sebum, and the makeup effect lasts for a long time.

  The O / F emulsion composition of the present invention refers to an emulsion composition using a fluorinated oil agent (F phase) as a dispersion medium and an oil agent (O phase) that is incompatible with the fluorinated oil agent as a dispersoid. The F / O emulsified composition refers to an emulsified composition having an oil agent (O phase) incompatible with the fluorinated oil agent as a dispersion medium and a fluorinated oil agent (F phase) as a dispersoid.

  The component (A) fluorine-based oil used in the O / F emulsion composition of the present invention is liquid at 25 ° C., and is, for example, perfluorodecalin, perfluoroadamantane, perfluorobutyltetrahydrofuran, perfluoro Examples include fluorooctane, perfluorononane, perfluoropentane, perfluorodecane, and perfluorododecane. Further, the following general formula (1)

[Wherein R ¹ , R ³ , R ⁴ and R ⁵ are the same or different and each represents a fluorine atom, a perfluoroalkyl group or a perfluoroalkyloxy group, R ² represents a fluorine atom or a perfluoroalkyl group, s, t, and u represent a number of 0 or more with a molecular weight of 500 to 100,000. However, s = t = u = 0 does not occur. Here, the perfluoro groups shown in parentheses need not be arranged in this order, and may be random polymerization or block polymerization. ]
The perfluoropolyether represented by these is mentioned.

  As perfluoropolyether, the following general formula (2)

[Wherein, f and g represent numbers with a molecular weight of 500 to 100,000, and f / g is 0.2 to 2]
FOMBLIN HC-04 (average molecular weight 1,500), HC-25 (3,200) and HC-R (6,600) (above, made by Augmont) represented by the following general formula ( 3)

F- (C ₃ F ₆ O) _h -C ₂ F ₅ (3)

[Wherein h represents a number of 4 to 500]
Demnam S-20 (weight average molecular weight 2,500), S-65 (4,500), S-100 (5,600) and S-200 (8,400) And commercial products such as Daikin Industries, Ltd.). In the present invention, the weight average molecular weight is a value measured by a gel permeation chromatography method (HLC-GPC manufactured by Tosoh Corporation, standard material polystyrene).

Moreover, the fluorine-modified silicone which has 1 or more of the structural unit represented by following General formula (4)-(7) and the structural unit represented by following General formula (8) can be mentioned.

[In the formula, R _f and R _{f ′} may be the same or different and each represents a linear or branched perfluoroalkyl group having 1 to 20 carbon atoms or the following formula: H (CF ₂ ) _b — (b is Ω-H-perfluoroalkyl group represented by the following formula: R ⁶ , R ⁹ and R ¹⁰ may be the same or different and may be a straight chain having 1 to 20 carbon atoms or A branched aliphatic hydrocarbon group or an alicyclic or aromatic hydrocarbon group having 5 to 10 carbon atoms; R ⁷ represents a hydrogen atom, a linear or branched aliphatic hydrocarbon having 1 to 20 carbon atoms; Group, an alicyclic or aromatic hydrocarbon group having 5 to 10 carbon atoms, a perfluoroalkyl group having 1 to 20 carbon atoms, or the following formula: H (CF ₂ ) _c — (c represents an integer of 1 to 20) in indicates omega-H- perfluoroalkyl group represented; R ⁸ is a divalent hydrocarbon group having 2 to 6 carbon atoms X and Y represent a single bond, —CO— or a divalent hydrocarbon group having 1 to 6 carbon atoms; v represents a number of 2 to 16, and w and p represent a number of 1 to 16, respectively. Q represents a number from 1 to 200, z represents a number from 0 to 5, and a represents a number from 0 to 200.

In the structural units represented by the general formulas (4) to (8), examples of the perfluoroalkyl group represented by R _f and R _{f ′} include CF ₃ —, C ₂ F ₅ —, C ₄ F ₉ —, _{C 6 F 13 -, C 8} F 17 -, C 10 F 21 -, H (CF 2) 2 -, H (CF 2) 4 -, H (CF 2) 6 -, H (CF 2) 8 -, _{(C 3 F 7) C (} CF 3) 2 - and the like. Moreover, H (CF _{2) b} - The b in 6-20 integers are preferred.

Examples of the hydrocarbon group represented by R ⁶ , R ⁹ and R ¹⁰ include methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl and decyl groups. Chain alkyl group; branched chain alkyl group such as isopropyl group, s-butyl group, t-butyl group, neopentyl group, 1-ethylpropyl group, 2-ethylhexyl group; cyclic alkyl group such as cyclopentyl group, cyclohexyl group; phenyl naphthyl And aromatic hydrocarbon groups such as groups. Moreover, as a bivalent hydrocarbon group shown by R < ⁸ >, a C2-C4 linear or branched alkylene group is preferable, and an ethylene group and a propylene group are especially preferable.

  Examples of the fluorine-modified silicone having such a structural unit include the following general formula (9);

[In the formula, at least one of Z ¹ and Z ² represents a structural unit selected from the general formulas (4), (5), (6) and (7), the remainder represents a single bond, and a, R ⁹ And R ¹⁰ has the same meaning as described above.]
Or the following general formula (10):

[In the formula, Z ³ represents a structural unit selected from the general formulas (4), (5), (6) and (7), and R ¹¹ represents a linear or branched aliphatic group having 1 to 20 carbon atoms. A hydrocarbon group or an alicyclic or aromatic hydrocarbon group having 5 to 10 carbon atoms, d represents a number of 0 to 200, and a, R ⁹ and R ¹⁰ have the same meaning as described above]
Can be mentioned.

  Furthermore, as a preferable example of fluorine-modified silicone, fluorine-modified silicone having a degree of polymerization of 2-200 described in JP-A No. 5-247214 having structural units represented by general formula (6) and general formula (8). FSL-300 manufactured by Asahi Glass Co., Ltd., X-22-819, X-22-820, X-22-821, X-22-822 and FL-100 manufactured by Shin-Etsu Chemical Co., Ltd., Toray Dow Examples thereof include FS1265 manufactured by Corning Silicone.

  As the component (A), perfluoropolyether is particularly preferable in that it has high water and oil repellency, is less likely to cause makeup disintegration, and has a good feeling when applied to the skin.

  Two or more types of component (A) may be used in combination. In the O / F emulsion composition of the present invention, the component (A) is contained in an amount of 25 to 90% by weight (hereinafter simply referred to as%), preferably 30 to 70%, particularly 40 to 60%. It is preferable in terms of durability and finish of the makeup effect.

  Component (B) used in the present invention is an oil that is incompatible with component (A). The term “not compatible” means that the components (A) and (B) are mixed at room temperature so as to be a homogeneous solution and then left to stand to immediately separate into two phases and do not become a homogeneous solution.

Component (B) may be either liquid oil or solid fat. In the case of solid fat, it is dissolved and melted and used as a liquid. Specific examples of the component (B) include oils and fats, waxes, hydrocarbon oils, ester oils, ether oils, higher alcohols, higher fatty acids, silicone oils and the like. Hydrocarbon oils, ether oils, ester oils, and silicone oils are preferred in terms of the feeling of cosmetic use.
Examples of fats and oils include castor oil, olive oil, avocado oil, palm oil and cacao oil; waxes such as tree wax, lanolin, beeswax, carnauba wax and candelilla wax; hydrocarbon oils such as petrolatum and liquid paraffin , Solid paraffin, ceresin, microcrystalline wax, squalane, etc .; examples of ester oils include stearic acid butyl ester, myristic acid octyldodecyl ester, myristic acid isopropyl ester, lanolin fatty acid isopropyl ester, stearic acid butyl ester, lanolinic acid hexyl ester, Oleic acid oleyl ester, adipic acid diisopropyl ester, sebacic acid diisopropyl ester, etc .; ether oil, polyoxyethylene, etc .; higher alcohols For example, stearyl alcohol, oleyl alcohol, etc .; higher fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, behenic acid, lanolin fatty acid, etc .; silicone oils such as dimethylpolysiloxane and methylphenylpolysiloxane Dimethylcyclopolysiloxane, methylhydromerodiene polysiloxane, and the like.

  Of these, silicone oils are particularly preferred, dimethylpolysiloxane and methylcyclopolysiloxane.

  Two or more components (B) may be used in combination. The component (B) is contained in the O / F emulsion composition of the present invention in an amount of 1 to 30%, but preferably 5 to 25%, particularly 10 to 20% in terms of feel when applied to the skin and storage stability. It is preferable to contain.

Component (C) of the O / F emulsion composition of the present invention is a powder obtained by subjecting a powder having a surface tension of 20 to 50 mN / m to a water / oil repellent treatment. In an O / F emulsion composition in which the fluorinated oil agent (A) is a dispersion medium and the oil agent (B) that is incompatible with (A) is a dispersoid, the repellency is highly compatible with the oil agent (B) that is a dispersoid. By using water / lipophilic powder as a base material, applying appropriate water / oil repellent treatment to the surface, and mixing the surface of the powder with high affinity for both (A) and (B) oil agents The powder (C) is localized at the interfaces (A) and (B), whereby a stable emulsion is obtained.
As the base material of the component (C) of the present invention, organic powders such as resin powders such as silicone resin, nylon resin, acrylic acid resin, polyethylene resin, and urethane resin, surfactant polyvalent metal salt, amino acid powder, etc. Examples include the body.

  As the silicone resin, for example, Tospearl 105, 120, 130, 145, 3120, 200B (above, manufactured by Toshiba Silicone) having a surface tension of 20 mN / m as a commercially available product, X-52-590E (manufactured by Shin-Etsu Silicone), Trefill E-506 (manufactured by Toray Dow Corning) and the like.

  As nylon resin, commercially available nylon SP500 having a surface tension of 32 to 49 mN / m (made by Toray Industries, Inc.), Daiamide T430P61, metal color WNP-609B (above, made by Daicel Chemical), nylon powder HK-5000 (Shiono Chemical Co., Ltd.) Manufactured), Organol 1002, 2002 (above, manufactured by Elfactochem).

  As acrylic resins, commercially available products are microsphere M503 (manufactured by Matsumoto Oil & Fats Co., Ltd.), ganzbar (manufactured by Ganz Kasei Co., Ltd.), technopolymer MB-2, Mooritex PM-2700M (above, Sekisui Plastics) having a surface tension of 30-40 mN / m. And MP1400 (manufactured by Soken Chemical Co., Ltd.).

Examples of commercially available polyethylene resin include flow beads having a surface tension of 30 to 40 mN / m, SF-H (manufactured by Iron & Chemicals), and the like.
Examples of the urethane resin include plastic powder D800 (manufactured by Nemoto Kogyo Co., Ltd.) having a surface tension of 36 to 39 mN / m.

  Specific examples of the surfactant polyvalent metal salt include zinc monoalkyl phosphate having a surface tension of 30 to 40 mN / m, calcium alkylbenzene sulfonate, calcium acyl taurate, calcium calcium sulfate, etc. Kaihei 4-18011 and JP-A-3-294210).

  Specific examples of the amino acid powder include N-acyl lysine (Japanese Patent Laid-Open No. 60-67406), α-amino fatty acid (Japanese Patent Laid-Open No. 62-4211), and Amihop LL (manufactured by Ajinomoto Co., Inc.) having a surface tension of 30 to 40 mN / m. ) And the like.

The surface tension of the powder was measured by the contact angle method (edited by the Chemical Society of Japan, “New Experimental Chemistry Course 18 Interface and Colloid” p104, published by Maruzen Co., Ltd., 1977).
The powder is formed into pellets, methyl iodide (γ = 50.8 mN / m, 20 ° C.) is dropped onto the surface at 20 ° C., and the contact angle θ is measured (for example, Kyowa Interface Science: CA-X type) Contact angle measuring device), and the surface tension γ (mN / m, 20 ° C.) is calculated by the following equation.

γ = 12.7 (1 + cos θ) ²

  The average particle diameter of the powder is measured by a laser diffraction / scattering method, and is 0.01 to 100 μm, preferably 0.1 to 30 μm, and particularly preferably 0.1 to 10 μm.

  In the component (C), the water and oil repellency treatment is carried out by using a polymer having a perfluoroalkyl group such as polyfluoroalkyl phosphate diethanolamine salt, fluoroalkyl di (oxyethyl) amine phosphate ester, fluorine-modified silicone (, fluorine It is carried out by a commonly used powder processing method using polyether co-modified silicone or the like as a water / oil repellent treatment agent.

  Examples of the fluorine-modified silicone include the fluorine-modified silicones mentioned in the component (A) and those described in JP-A-6-184212.

  The fluoropolyether co-modified silicone is, for example, a silicone having a perfluoroalkyl group and a polyoxyalkylene group and a side chain described in JP-A-7-126126 having the following formula:

(Wherein, A r1, r2, r3 is an integer, r1 = 0~500, r2 = 1~500 , an r3 = 1 to 500, R ¹² is a carbon number of unsubstituted or substituted the same or different 1 ˜20 alkyl group or aryl group, R ¹³ is a fluorine-substituted alkyl group having 1 to 10 carbon atoms, and R ¹⁴ is —C _k —H _2k O (C ₂ H ₄ O) _l (C ₃ H ₆ O). _m is a polyoxyalkylene group represented by R ¹⁶ , R ¹⁵ is either R ^12, R ¹³ or R ¹⁴ , R ¹⁶ is a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or an acetyl group, l, m, and k are integers, and l = 0 to 100, m = 0 to 100, l + m is 1 or more, and k = 2 to 6).

  Of these water and oil repellent treatment agents, polyfluoroalkyl phosphate diethanolamine salts are particularly preferred.

  At this time, the weight ratio of the powder to the water / oil repellent treatment agent is such that the value of the powder / water / oil repellent treatment agent is 100/1 to 100/7, preferably 100/2 to 100/7, In particular, it is preferably 100/3 to 100/5.

  As the water / oil repellent treated powder, a silicone resin and a nylon resin, in which the powder / water / oil repellent treatment agent is treated with a polyfluoroalkyl phosphate diethanolamine salt at a ratio of 100/5, are particularly preferable.

  Two or more types of component (C) may be used in combination. The component (C) is contained in the O / F emulsion composition of the present invention in an amount of 5 to 50%, preferably 20 to 45% in terms of storage stability of the emulsion and usability when applied to the skin. In particular, it is preferable to contain 25 to 40%.

Next, the F / O emulsion composition which is the 2nd aspect of this invention is demonstrated.
The same fluorine-containing oil agent as the component (A) of the O / F emulsion composition is used as the component (D) fluorine-based oil agent used in the F / O emulsion composition of the present invention.
The component (D) is contained in the F / O emulsion composition of the present invention in an amount of 1 to 30%, preferably 5 to 25%, particularly 10 to 20% in terms of feel when applied to the skin and storage stability. It is preferable to contain.

As the oil agent that is not compatible with the component (D) of the component (E) used in the F / O emulsion composition of the present invention, the same oil agent as the component (B) used in the above invention is used.
Although the component (E) is contained in the F / O emulsion composition of the present invention in an amount of 10 to 75%, it is preferably contained in an amount of 20 to 60%, particularly 30 to 70%, from the viewpoint of durability and finish of the cosmetic effect.

Component (F) of the F / O emulsion composition of the present invention is a powder obtained by subjecting a powder having a surface tension of less than 20 mN / m to a water-repellent lipophilic treatment. In the F / O emulsion composition, the oil agent (E) that is incompatible with the fluorinated oil agent is a dispersion medium, and the fluorinated oil agent (D) is a dispersoid, so that it is compatible with the dispersoid oil agent (E). Highly water- and oil-repellent powder is used as a base material, and the surface of the powder is subjected to appropriate water- and oil-repellent treatment to make the powder surface highly compatible with both (E) and (D) oil agents. And a stable emulsion can be obtained by localizing the powder (F) at the interfaces (E) and (D).
Examples of the substrate of the component (F) of the present invention include fluorine resins.
Examples of commercially available fluororesins include Lubron L-2 and 10 (manufactured by Daikin Industries) having a surface tension of 17 mN / m.

  These powders preferably have an average particle diameter of 0.01 to 100 μm, preferably 0.1 to 30 μm, particularly 0.1 to 10 μm.

  Examples of the water-repellent / lipophilic treatment agent used in component (F) include silicone (Japanese Patent Laid-Open Nos. 45-18999 and 56-16404), alkyl silylating agents (Japanese Patent Laid-Open No. 56-81512), Examples thereof include molecules (Japanese Patent Laid-Open No. 56-68604), metal soap (Japanese Patent Laid-Open No. 60-69011), and the like.

  Examples of silicone include dimethylpolysiloxane, methylhydropolysiloxane, methylphenylpolysiloxane, methylvinylpolysiloxane, and the like.

  Examples of the alkyl silylating agent include alkyl silane, alkyl chloro silane, and dialkyl dichloro silane.

  Examples of the lipophilic polymer include polyethylene, polystyrene, acrylic and derivatives thereof, polyamide, polyisobutylene, pure vinyl chloride resin, polyvinyl acetate, ethylene vinyl acetate copolymer, and aromatic hydrocarbon resin.

  Examples of the metal soap include salts of C10-24 fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, and behenic acid, such as aluminum, magnesium, calcium, and zinc.

  Of these water-repellent / lipophilic treatment agents, dimethylpolysiloxane and methylhydrogenpolysiloxane are preferred.

An example of a water-repellent oleophilic treatment method for powder having a surface tension of less than 20 mN / m is disclosed in JP-A 63-250311.
At this time, the weight ratio of the powder to the water-repellent / lipophilic treatment agent is such that the value of the powder / water-repellent / lipophilic treatment agent is 100/1 to 100/7, preferably 100/2 to 100/7, In particular, it is preferably 100/3 to 100/5.

  As a powder obtained by subjecting a powder having a surface tension of less than 20 mN / m to a water-repellent oleophilic treatment, a fluororesin in which the powder / water-repellent lipophilic agent is treated with methylhydrogenpolysiloxane at a ratio of 100/5. Etc. are particularly preferred.

  Two or more types of component (F) may be used in combination. The component (F) is contained in the F / O emulsion composition of the present invention in an amount of 10 to 75%, preferably 20 to 45% in terms of the storage stability of the emulsion and the feeling of use when applied to the skin. In particular, it is preferable to contain 25 to 40%.

  The O / F emulsion composition and F / O emulsion composition of the present invention are particularly preferably used as cosmetics. In this case, in addition to these components, nonionic surfactants, anionic surfactants, cations Surfactants such as surfactants, colorants such as inorganic and organic pigments, organic dyes, preservatives, antioxidants, dyes, thickeners, pH adjusters, fragrances, ultraviolet absorbers, humectants, blood circulation promoters Further, a cooling sensation agent, an antiperspirant, a bactericidal agent, a skin activator and the like can be appropriately contained.

These O / F emulsion compositions and F / O emulsion compositions of the present invention are produced according to the same method as that for ordinary emulsion compositions.
The average particle size of the dispersoid (oil phase) of the emulsion composition thus produced is preferably from 0.1 to 1000 μm, particularly preferably from 1 to 100 μm, by the laser diffraction / scattering method.

  When the emulsified composition of the present invention is used as a cosmetic, if it is an eye shadow, foundation, makeup base, lotion, emulsion, etc., the water and oil repellency due to the fluorine-based oil agent is sufficiently exerted, and makeup collapse due to sweat and sebum It is preferable in that it does not easily occur and the cosmetic effect lasts for a long time.

Example 1 and Comparative Examples 1 to 4
An O / F emulsion composition having the composition shown in Table 1 was prepared according to the following method.
Preparation method: After adding the powder in the F phase and mixing with a disper, the O phase component was added with stirring to obtain the desired product.
When the emulsion was prepared, it was marked with ◯, and when it was not prepared, it was marked with x.

Reference Example 1, Comparative Examples 5-8
F / O emulsion compositions of the compositions shown in Table 2 were prepared according to the following method.
Preparation method: The powder was added to the O phase, mixed with a disper, and then the F phase component was added with stirring to obtain the desired product.
When the emulsion was prepared, it was marked with ◯, and when it was not prepared, it was marked with x.

  In the O / F emulsified composition of Example 1, water- and oil-repellent treated powder was observed with a microscope, and in the F / O emulsified composition of Reference Example 1, water- and oil-repellent treated powder. Was confirmed to be localized at each interface.

Example 2, Comparative Examples 9-11
Eye shadows shown in Table 3 were prepared according to the following method.
Preparation method: Powder and other components were added to the O phase, mixed with a disper, and then the F phase component was added with stirring to obtain the desired product.

Reference Example 2, Comparative Examples 12-14
Eye shadows shown in Table 4 were prepared according to the following method.
Preparation method: Powder and other components were added to the F phase, mixed with a disper, and then the O phase component was added with stirring to obtain the desired product.

Evaluation Method Five panelists evaluated the ease of application and the result of having a makeup with each eye shadow according to the following evaluation criteria.
◎: Good ○: Slightly good △: Neither can be said ×: Slightly bad ××: Bad

  In Example 2 and Reference Example 2, both ease of application and long lasting makeup were excellent.

FIG. 3 is a diagram showing microscopic observation of Example 1 of the present invention.

Claims (3)

The following components (A), (B) and (C):
(A) fluorinated oil 30 to 90% by weight,
(B) 1-30% by weight of an oil that is incompatible with component (A)
(C) Powder obtained by subjecting powder having surface tension of 20 to 50 mN / m to water / oil repellency treatment
5-50% by weight
An O / F emulsion composition in which component (C) is localized at the interface between component (A) and component (B).   The O / F emulsion composition according to claim 1, wherein the O / F emulsion composition is a cosmetic.   The component (A) is a perfluoropolyether, the component (B) is a silicone oil, and the component (C) is a powder obtained by surface-treating a resin powder or an organic powder with a fluorine-containing compound. / F emulsion composition.