JP2936350B2 - Emulsified cosmetic - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an emulsified cosmetic containing a liquid perfluoro organic compound and a hydrophobic powder, and having excellent stability and good feel.

[Problems to be Solved by Conventional Techniques and Inventions] Conventionally, by blending powder into cosmetics, functions such as coloring skin and hair, masking spots and freckles, and protecting skin from ultraviolet rays, etc., have been developed. Has been granted. In particular, emulsified cosmetics have a good feel and multi-functionality, and thus are blended with a powder and applied to various cosmetics, for example, emulsified foundations, UV-protected emulsions and creams, and the like.

On the other hand, in recent years, hydrophobic powders and hydrophobically treated powders have been used for the purpose of improving the adhesion of the powder to the skin and imparting water (sweat) resistance. However, in order to stably incorporate these hydrophobic powders into emulsified cosmetics, it is necessary to increase the viscosity of the oil phase, which is the dispersion medium, or to increase the amount of emulsifier or dispersant used. It was difficult to obtain a good and stable powder.

Also, recently, cosmetics are given sebum resistance and oil resistance,
In addition, for the purpose of imparting moisture retention, lubricity and protection to the skin and hair, liquid perfluoro organic compounds (Japanese
61-234928, JP-A-63-107911, etc.). However, the perfluoro organic compound is not compatible with other components usually used in cosmetics, and it has been difficult to obtain a stable emulsified cosmetic using this.

Accordingly, there has been a demand for a stable emulsified cosmetic that does not impair the performance of the liquid perfluoroorganic compound and the hydrophobic powder, has excellent usability, and is stable.

[Means for solving the problem]

Under such circumstances, the present inventors have conducted intensive studies and, as a result, surprisingly, the surfactant, the aqueous medium, the perfluoro organic compound and the hydrophobic powder were compatible, and the perfluoro organic compound and the hydrophobic powder were The present inventors have found that an emulsified cosmetic having excellent usability and stability can be obtained without impairing the performance, and the present invention has been completed.

That is, the present invention comprises the following components (a) to (d): (a) a surfactant; (b) an aqueous medium; (c) a liquid perfluoroorganic compound; and (d) a hydrophobic powder. ), A total amount of liquid oils other than the components (d) and (c) is 60% by weight or more in the total composition.

Examples of the surfactant (a) used in the present invention include monoglyceride, sorbitan fatty acid ester, sucrose fatty acid ester, polyglycerin fatty acid ester, alkanolamide, amine oxide, polyoxyethylene alkyl ether, polyethylene glycol fatty acid ester, Polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin mono fatty acid ester, polyoxyethylene propylene glycol mono fatty acid ester, polyoxyethylene hydrogenated castor oil,
Nonionic surfactants such as polyoxyethylene fatty acid amides, polyoxyethylene alkylamines and alkyl saccharides; alkyl sulfates, alkyl ether sulfates, fatty acid soaps, ether carboxylic acids and salts thereof, alkane sulfonates, α -Olefin sulfonates, sulfonates of higher fatty acid esters, dialkyl sulfosuccinates, monoalkyl sulfosuccinates, polyoxyethylene monoalkyl sulfosuccinates, sulfonates of higher fatty acid amides, sulfates of higher fatty acid alkylolamides Anionic surfactants such as salts, acylated amino acid salts, and amino acid salts of β-branched monoalkyl phosphoric acids; alkyl trimethyl ammonium salts, dialkyl dimethyl ammonium salts, alkyl dimethyl benzyl ammonium salts, Cationic surfactants such as kilpyridinium salts; amphoteric surfactants such as imidazoline type, amide amino acid salts, alkyl betaine type and alkyl sulfobetaine type;

These surfactants can be used singly or in combination of two or more, and are preferably incorporated in the entire composition in an amount of 0.01 to 20% by weight (hereinafter simply referred to as%), particularly 0.1 to 5%. If it is less than 0.01%, a stable emulsion cannot be obtained,
If it exceeds 20%, the hydrophobicity of the powder is affected, which is not preferable.

As the aqueous medium of the component (b), water alone or a mixture of water and a water-soluble alcohol such as ethanol, propylene glycol, dipropylene glycol, and 1,3-butanediol can be used. This aqueous medium is used for diluting the surfactant of the component (a), and the amount thereof is not particularly limited.
It is preferable to mix 5 to 40%, particularly 2 to 30%. If it is less than 0.5%, the feel becomes poor, and if it exceeds 40%, a stable emulsion cannot be obtained, which is not preferable.

The liquid perfluoro organic compound as the component (c) is not particularly limited as long as it is a liquid at room temperature. For example, perfluorodecalin, perfluoroadamantane, perfluorobutyltetrahydrofuran, perfluorooctane, perfluorononane , Perfluoropentane, perfluorodecane, perfluorododecane, general formula (I) Wherein R ¹ , R ³ , R ⁴ and R ⁵ may be the same or different,
Each fluorine atom, a perfluoroalkyl group or a perfluoroalkyl group, R ² represents a fluorine atom or a perfluoroalkyl group, p, q, and r are the number of 0 or more molecular weight is 500 to 100,000. However,
p = q = r = 0 never holds. ] And the like.

In the general formula (I), the perfluoro groups shown in parentheses need not be arranged in this order, and may be random polymerization or block polymerization. Particularly, a liquid having a viscosity of 5 to 500 cSt is preferable. For example, the following general formula (II) (In the formula, x and y are numbers each having a molecular weight of 500 to 100,000, and x / y is 0.2 to 2.) FOMBLIN HC-04 (average molecular weight 1500),
-25 (the 2300), and and the HC-R (the same 6600) (all manufactured by Montefurosu Co.), following general formula _{(III) F- (C 3 F} 6 O) 2 -C 2 F 5 (III) ( In the formula, z represents a number of 4 to 500.) Demnum S-20 (weight average molecular weight 2500)
0), S-65 (4500), S-100 (5600), and S-200 (8400) (all manufactured by Daikin Industries, Ltd.) can be used.

These perfluoro organic compounds can be used alone or in combination of two or more kinds, and 40 to 98
%, Particularly preferably 50 to 90%. If it is less than 40%, it cannot be emulsified, and if it exceeds 98%, the stability becomes poor, which is not preferable.

As the hydrophobic powder of the component (d), besides ordinary hydrophobic powder, for example, a hydrophobic powder obtained by subjecting one or more surfaces of powders selected from inorganic powders and organic powders to hydrophobic treatment is used. Processed powder is also included. As the surface treatment method, for example, an oil or fat is adsorbed on the powder surface, or a functional group such as a hydroxyl group is used to cause esterification or etherification to make the powder lipophilic, and a zinc salt of a fatty acid. Metal soaping method using magnesium salt or magnesium salt, silicone processing method using dimethyl polysiloxane or methyl hydrogen polysiloxane,
The fluorine compound method [where treatment with fluorine compounds, such as: having a perfluoroalkyl group, for example, the following general formula _{(IV) [C m F 2m} + 1 C n H 2n O] y PO (OH) _3-y (IV) (wherein, m is an integer of 4 to 14, n is an integer of 1 to 12, and y is 1
Represents an integer of 1 to 3. A polyfluoroalkylphosphoric acid represented by the following formula:
32744), fluoroalkyldi (oxyethyl)
Amine phosphate esters (see JP-A-62-250074) and resins having perfluoroalkyl groups (JP-A-55-167209)
), Perfluoroethylene resin, perfluoroalcohol, perfluoroepoxy compound, sulfoamide-type fluorophosphoric acid, perfluorosulfate, perfluorocarboxylate, perfluoroalkylsilane (JP-A-2-21)
8603) etc. are applied, but are not limited to these. And the like. The mother powder to be treated is not particularly limited as long as it is a substance substantially insoluble in water and oil such as a pigment and an ultraviolet absorber. For example, methane oxide, iron oxide, ultramarine, zinc white, magnesium oxide, oxide Zirconium, mica, sericite, talc, silica, kaolin,
Examples include inorganic pigments such as chromium hydroxide and carbon black, nylon powder, polymethyl methacrylate, styrene-divinylbenzene copolymer, organic powders such as polyethylene powder, and organic dyes.

These hydrophobic powders can be used alone or in combination of two or more kinds, and 0.01 to 50%, particularly 0.1%, in the total composition.
It is preferable to mix 1 to 30%. If it is less than 0.01%, it is difficult to obtain the effect, and if it exceeds 50%, it is difficult to obtain a stable product, which is not preferable.

In the present invention, the total amount of components (c), (d) and liquid oil other than component (c) is 60% in the total composition.
%, Particularly preferably 70% or more. If it is less than 60%, it is difficult to obtain a stable emulsified cosmetic.

In the cosmetic of the present invention, in addition to the above essential components, components that are blended with ordinary cosmetics as needed, for example, petrolatum, lanolin, ceresin, microcrystalline wax, carnauba wax, candelilla wax, higher fatty acids, Solid and semi-solid oils such as higher alcohols, olive oil, jojoba oil, castor oil, squalane, liquid paraffin, ester oil, liquid oils such as diglyceride, triglyceride, silicone oil, water-soluble and oil-soluble polymers, inorganic and organic pigments, metals Soap-treated or silicon-treated inorganic and organic pigments, coloring agents such as organic fuels, preservatives, antioxidants, pigments, thickeners, pH adjusters, fragrances, ultraviolet absorbers, humectants, blood circulation enhancers , A cooling sensation agent, an antiperspirant, a bactericide, a skin activator, etc. may be blended within the qualitative and quantitative ranges which do not impair the object and effects of the present invention. Kill.

The emulsified cosmetic of the present invention can stably mix a large amount of a liquid perfluoroorganic compound and a hydrophobized powder. To obtain such a stable emulsified cosmetic, for example, the component (a) And the component (b) and, if necessary, an aqueous component in which an aqueous component is uniformly dissolved, and the component (c) to the component (d).
It is preferable that the suspension is prepared by slowly adding a suspension of the components and, if necessary, a suspension of the component (d) in an arbitrary liquid oil with stirring. In addition, the cosmetics of the present invention thus obtained include, for example, basic cosmetics such as skin care creams, grooming creams, and ultraviolet protection creams; makeup cosmetics such as foundations, mascaras, and eye shadows; hair care gels, shampoos, In addition to hair cosmetics such as temporary hair dyes, they can also be applied as medicated cosmetics, external medicine bases and the like.

〔The invention's effect〕

The emulsified cosmetic of the present invention is capable of stably blending a liquid perfluoro organic compound and a hydrophobic powder without impairing their performance, and is excellent in usability and stability.

EXAMPLES Next, the present invention will be further described with reference to examples, but the present invention is not limited to these examples.

Production Example 1 150 g of pigment was placed in a round bottom flask (or kneader),
Heat to 60 ° C with mixing. In addition, (C ₆ F ₁₃ CH ₂ CH
_{2 O) 2 P (O)} OH 13g dissolved with heating (50 ° C. to isopropyl ether 1500g a) to what had been added and mixed for 4 hours at 60 ° C.. Thereafter, isopropyl ether was distilled off under reduced pressure at 50 to 60 ° C. and dried to obtain 157 g of a fluorine compound-treated pigment.

Production Example 2 In a round bottom flask (or kneader) (C ₆ F ₁₇ CH ₂ CH ₂ O)
₂ Add 17 g of P (O) OH and 1500 g of isopropyl alcohol, heat and dissolve to 60 ° C, add 150 g of pigment,
And mix for 4 hours. Thereafter, isopropyl alcohol was distilled off under reduced pressure at 50 to 60 ° C. and dried to obtain 161 g of a fluorine compound-treated pigment.

Example 1 An emulsified cosmetic having the composition shown in Table 1 was produced and its stability was evaluated. The results are shown in Table 1.

(Production method) The perfluoro phase is slowly added to the aqueous phase with stirring.
Stirring was continued for an additional 30 minutes after the addition.

(Evaluation method) After storage at 40 ° C for 7 days, the appearance was evaluated.

Example 2 Foundation: An emulsified foundation having the composition shown in Table 2 was produced.
Each was evaluated for ease of application, feeling immediately after application, and makeup feel. The results are shown in Table 3.

(Preparation method) Inventive D and Comparative C In a water phase in which components 1 to 4 are uniformly dissolved, add component 6 with stirring.
-7 is added slowly, and then component 5
Was added in the same manner as above, and stirring was further continued for 60 minutes.

・ Comparison B Component 8 was added to Component 5 in the aqueous phase in which Components 1 to 4 were uniformly dissolved.
Was mixed with a homogeneous mixed solution of the components 6 to 7 and stirred for 60 minutes.

(Results) Comparative B was completely separated and could not bear the evaluation. Ten female panelists actually used the emulsified foundations of Warm Invention D and Comparative C, and evaluated the evaluation items shown in Table 4 according to the following criteria.

(Evaluation criteria) 1. Ease of application ◎: Good spreadability and easy to apply ○: Slightly good spreadability and easy to apply △: Slightly spreadable and difficult to apply ×: Spready and hard to apply 2. Immediately after application Feeling ◎: Smooth and good ○: Slightly slick △: Slightly sticky ×: Sticky and bad 3. Makeup sticky ◎: Makeup does not get out of order ○: Almost no change in makeup △: Slightly out of place ×: Makeup Broken Example 3 UV-protected skin care cream: UV-protected skin care cream was prepared according to the following formulation.

The obtained skin care cream had a refreshing feeling and was good, and was excellent in appearance and stability.

(Preparation method) Under stirring, the component 6 was added to the aqueous phase in which the components 1 to 5 were uniformly dissolved.
The oil phase of ~ 8 was slowly added, after which the perfluoro phase in which component 10 was suspended in component 9 was added in the same manner and stirring was continued for another 30 minutes.

Example 4 UV-Protected Hair Care Cream: A UV-protected hair care cream was prepared according to the following formulation.

The obtained hair care cream had a good feeling in use and was stable, and the effect of the oil agent gave a gloss to the hair and an extremely good brushing care effect.

(Preparation method) Under stirring, the component 5 was added to the aqueous phase in which the components 1 to 3 were uniformly dissolved.
The homogeneous mixture of ~ 6 was slowly added, after which the perfluoro phase in which component 7 was suspended in component 4 was similarly added, and stirring was continued for another 60 minutes.

Example 5 Makeup Base Cream: A base makeup cream was prepared according to the following formulation.

The use of the resulting makeup base cream provided the following effects: smooth skin texture, powdery-type foundation, good makeup, long lasting makeup, etc., and good stability.

(Preparation method) Under stirring, the component 6 was added to the aqueous phase in which the components 1 to 4 were uniformly dissolved.
The oil phase in which the component 9 was suspended was added slowly to the homogeneous mixture of the components No. to 7, and the perfluoro phase in which the component 8 was suspended in the component 5 was similarly added, followed by stirring for 60 minutes.

Example 6 Cleansing Cream: A cleansing cream was manufactured according to the following formulation.

When an appropriate amount of the obtained cleansing cream is applied and massaged, oily stains and fluorine-based stains are lifted by the cream. When these were rinsed with running water, oily stains and fluorine stains and creams were completely removed as white turbid water. The oily and fluorine-based stains rise very quickly, the stains can be easily removed from the inside of the skin groove, and the washing is extremely refreshing.

(Preparation method) Under stirring, the component 6 was added to the aqueous phase in which the components 1 to 4 were uniformly dissolved.
The oil phase in which the component 10 was suspended was added slowly to the homogeneous mixture of 8, and then the perfluoro phase in which the component 9 was suspended in the component 5 was similarly added, followed by stirring for further 60 minutes.

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-63-107911 (JP, A) JP-A-63-183509 (JP, A) JP-A-61-234928 (JP, A) JP-A-1- 180810 (JP, A) JP-A-61-215216 (JP, A) JP-A-2-88511 (JP, A) JP-A-4-91008 (JP, A) "Fragrance journal", (1989), vol. 17, No. 4, p. 124-129 (58) Fields investigated (Int. Cl. ⁶ , DB name) A61K 7/00

Claims (1)

(57) [Claims] 1. A composition comprising the following components (a) to (d): (a) a surfactant; (b) an aqueous medium; (c) a liquid perfluoroorganic compound; and (d) a hydrophobic powder. An emulsified cosmetic, wherein the total amount of the liquid oils other than the components (d) and (c) is 60% by weight or more in the total composition.