JP3040702B2 - Cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic composition which has good spreadability on the skin, is excellent in use feeling, makes pores and fine wrinkles inconspicuous, and has excellent durability.

[0002]

2. Description of the Related Art Powder cosmetics such as makeup cosmetics,
Usually, it is manufactured by blending a cosmetic powder with an oily base and other components. These cosmetics are required to have good usability such as spreading on the skin, and cover skin defects such as spots, freckles, wrinkles, pores, etc., and make the skin look beautiful, and its effect. It is required that the effect be maintained.

Heretofore, for the purpose of improving the usability, various kinds of spherical powders have been blended with powder cosmetics to give a good feeling such as good slip and light spread.
However, although the spherical powder used here is good in feel, it is inferior in concealing power and cannot make pores and fine wrinkles inconspicuous. I was not satisfied.

On the other hand, cosmetics containing a large amount of a white pigment having a high refractive index such as titanium oxide for the purpose of concealing skin defects are also known. However, these cosmetics are excellent in hiding power and can cover stains and freckles, but they have a large spread on the skin, and the finish becomes thicker, and irregularities such as pores and small wrinkles are more conspicuous and natural finish However, there was a drawback that it was not possible to obtain

[0005] Further, in order to improve the persistence of makeup, water-repellent or oil-repellent treatment is applied to pigments.
There is a problem that the finish immediately after makeup is thick and unnatural, and the finish over time is rather poor.

[0006]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide good spreadability on the skin, excellent usability, and to make skin unevenness such as pores and small wrinkles less noticeable without thickening, thereby achieving a natural finish. An object of the present invention is to provide a cosmetic that can be obtained and that maintains its natural finish.

[0007]

Under such circumstances, the present inventors have conducted intensive studies and as a result, it has been found that the use of powder obtained by treating a specific fine powder with a fluorine compound results in good spreadability on the skin. The present invention has been found to provide a cosmetic which is excellent in feeling and can make skin unevenness such as pores and fine wrinkles inconspicuous with a natural finish, and furthermore, a cosmetic can be obtained whose effect lasts for a long time.

That is, according to the present invention, the average particle size is 0.1 μm.
m, 2 μm or less, and a refractive index of 2 or less, polyfluoroalkylphosphoric acid, fluoroalkyldi (oxyethyl) amine phosphate, perfluorosulfate, perfluorocarboxylate and perfluoroalkyl An object of the present invention is to provide a cosmetic comprising a powder treated with one or more kinds of fluorine compounds selected from silanes.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the fine powder treated with a fluorine compound is not particularly limited as long as it has an average particle diameter of more than 0.1 μm and 2 μm or less and a refractive index of 2 or less. , Inorganic fine powder, organic fine powder may be any, and the shape is spherical, flat, granular, needle-like, rod-like,
Any of amorphous and the like may be used. Examples of such fine powder include inorganic fine powders such as silica, alumina, barium sulfate, alumina, aluminum hydroxide, calcium carbonate, magnesium silicate, magnesium carbonate, and aluminum silicate; polyamide resins, polyethylene resins, polypropylene resins, and polymethacrylic. Organic fine powders such as a methyl acid resin, a cellulose resin, a polystyrene resin, a copolymer of styrene and acrylic acid, and a silicone resin are exemplified. Among them, silica, barium sulfate, alumina, aluminum hydroxide, calcium carbonate, polyamide resin, polymethyl methacrylate resin, and silicone resin are particularly preferable. Further, these fine powders may be coated with a coloring pigment, a coloring matter, a dye, a metal ion, or the like by a usual method, and may be subjected to an encapsulating treatment and colored.

These fine powders have an average particle size of 0.1 μm
More than 2 μm or less, preferably 0.15 to 1.5 μm,
It is particularly preferable that the thickness be 0.3 to 1.2 μm. When the thickness is 0.1 μm or less, the feeling of use is poor, and the effect of making the unevenness such as pores and small wrinkles inconspicuous is reduced. When the thickness exceeds 2 μm, the effect of making the unevenness such as pores and small wrinkles inconspicuous is also reduced. Absent.

In the present invention, the average particle size refers to an average value obtained by observing a powder using an electron microscope and measuring the particle size of 300 primary particles. In addition, the particle diameter used here indicates the diameter of the primary particles in the case of a true spherical powder, and indicates the average value of the major axis and the minor axis of the primary particles in the case of powders having other shapes.

Further, these fine powders need to have a refractive index of 2 or less, preferably 1.1 to 2.0,
Particularly preferably, it is required to be 1.4 to 1.8. When the refractive index exceeds 2, whiteness becomes noticeable when applied to the skin, and the effect of making unevenness such as pores and fine wrinkles inconspicuous cannot be obtained.

Further, these fine powders are preferably monodisperse spherical powders, and have the effect of more uniformly adhering on the skin. Here, the monodispersed spherical powder refers to a powder having a true spherical shape and a narrow particle size distribution, and a coefficient of variation (standard deviation / average particle diameter × 100) of 50% or less, particularly 30% or less.
% Or less is preferable.

In the present invention, as the fluorine compound for treating the fine powder, for example, the following general formula (1)

[0015]

Embedded image [C _m F _{2m + 1} C _n H _2n O] _l PO (OH) _3-l (1)

(Wherein m is a number from 1 to 20, and n is 1
A polyfluoroalkylphosphate (US Pat. No. 3,632,744) represented by the following formula:
No.), fluoroalkyldi (oxyethyl) amine phosphoric acid ester (JP-A-62-250074), perfluorosulfate, perfluorocarboxylate, and perfluoroalkylsilane (JP-A-1-318070, 2-2)
No. 18603, No. 1-160907, No. 2-1274
No. 77, manufactured by Shin-Etsu Silicones, LP-1T, LP-4
T, silane coupling agents such as LP-8T) and the like.

The method of treating the fine powder with such a fluorine compound may be a commonly used method, and is not particularly limited. For example, water and / or a medium such as alcohol, acetone, toluene and hexane may be used. A method of dissolving or dispersing the compound in the mixture, adding a fine powder to the mixture, stirring and treating the mixture, distilling or filtering the treatment medium, and coating the powder with a fluorine compound. in this case,
The treatment may be performed under heating, and a reaction aid such as an acid, an alkali, and a catalyst may be added as needed. Also, the fluorine compound is dissolved or dispersed in a volatile solvent,
The fine powder can be sprayed and coated using a flow coater or the like. Alternatively, the fluorine compound and the fine powder to be treated may be mixed in a ball mill or the like, and the treatment may be performed in a dry manner.

Further, in order to enhance the processing effect, after such processing is performed, post-processing such as baking processing, heating processing, and aging processing may be performed as long as the effects of the present invention are not impaired. Further, a baking treatment, a heating treatment, a hydrothermal treatment, a decompression treatment, a plasma treatment, or the like may be performed on the fine powder as a pretreatment as needed.

Further, in the present invention, generally used treating agents other than fluorine compounds, for example, various silicones, higher fatty acids and metal salts thereof, higher alcohols, esters, waxes, acylglutamic acids, N-mono long chain acyl bases Amino acids such as sex amino acids and their metal salts, hydrogenated lecithin, polyethylene, polyacrylic acid, acylated collagen, alkyl phosphates, triglycerides,
Diglyceride, silica, alumina, alumina silica,
It can be treated simultaneously or double with a known treating agent such as titania and barium sulfate.

The amount of the fine powder to be treated with the fluorine compound varies depending on the type of the fine powder and the fluorine compound to be used, and is not particularly limited, but is preferably 0.1 to 30% by weight based on the fine powder. (Hereinafter simply indicated by%), particularly preferably 0.5 to 20%. It is particularly preferable if the content is within this range, since the powder is more excellent in persistence, has good fluidity of the powder, and can obtain a natural finish.

In the cosmetic of the present invention, the powder obtained by treating the fine powder with the fluorine compound in this manner can be used alone or in combination of two or more, and the amount of the powder is not particularly limited. It is preferable to mix 1 to 60% in the composition, and particularly preferable to be 5 to 40%, and more preferably 10 to 30%, because it is more excellent in usability and finish.

The cosmetic of the present invention further has an average particle size of 3 to
Spherical powder of 50 μm can be compounded, which is preferable because it is more excellent in usability. The spherical powder is not particularly limited as long as it has an average particle diameter of 3 to 50 μm, and may be any of an inorganic spherical powder and an organic spherical powder. Pigments, dyes, dyes, metal ions and the like may be coated, encapsulated, and colored. Examples of such a spherical powder include inorganic spherical powders such as spherical silica, spherical alumina and spherical titania; spherical polyamide resin, spherical polymethyl methacrylate resin, spherical silicone resin, spherical polyethylene resin, spherical polystyrene resin, spherical cellulose. Organic spherical powders such as a base resin; and further, those obtained by granulating an extender pigment, a color pigment, or the like into a spherical shape by an ordinary method. Among these spherical powders, spherical silica, spherical alumina, spherical polyamide resin, spherical polymethyl methacrylate resin, and spherical silicone resin are particularly preferable from the viewpoint of feeling in use.

These spherical powders have an average particle size of 3 to 50.
μm, preferably 5 to 20 μm, more preferably 5 to 10 μm. When it is within this range, the composition has good spreadability on the skin and excellent adhesion to the skin, which is preferable.

Further, these spherical powders may be treated with a treating agent used for ordinary cosmetic pigments, for example, silicone, metal soap, lecithin, amino acid, collagen, fluorine compound, etc., as long as the effects of the present invention are not impaired. Surface-treated ones can also be used.

These spherical powders can be used alone or in combination of two or more. The amount of the spherical powder is not particularly limited, but is preferably 1 to 90% of the total composition, more preferably 5 to 90%. When it is blended in an amount of up to 70%, and more preferably in an amount of 10 to 50%, it is more preferable in terms of spread on the skin and adhesion to the skin.

Further, the cosmetic of the present invention preferably contains titanium oxide, so that a more natural finish can be obtained. It is preferable that titanium oxide is blended in an amount of 1 to 20%, particularly 3 to 15% in the whole composition.

The cosmetics of the present invention include, in addition to the above-mentioned powders, powders used in ordinary cosmetics, for example, silicic acid, silicic anhydride, magnesium silicate, talc, sericite, mica, kaolin, red iron oxide, Clay, bentonite, titanium-coated mica, bismuth oxychloride, zirconium oxide,
Inorganic powders such as magnesium oxide, zinc oxide, aluminum oxide, calcium sulfate, barium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, iron oxide, ultramarine, chromium oxide, chromium hydroxide, calamine, carbon black, and composites thereof A polyamide, polyester, polypropylene, polystyrene, polyurethane, vinyl resin, urea resin, phenol resin, fluororesin, silicon resin, acrylic resin, melamine resin, epoxy resin, polycarbonate resin, divinylbenzene / styrene copolymer, silk powder, cellulose And organic powders such as composites thereof; those obtained by subjecting them to surface treatment with a surfactant, silicone, metal soap, lecithin, amino acid, collagen, polymer, fluorine compound, etc .; coloring pigments, dyes, dyes, and gold. Coated with ions or the like, those that have been encapsulated treated; organic tar-based dyes, and organic colorants such as rake. When these powders are blended, the content is preferably 0.1 to 70% of the total composition.

The cosmetics of the present invention may further comprise, in addition to the above-mentioned components, components used in ordinary cosmetics, for example, vaseline,
Lanolin, ceresin, microcrystalline wax,
Solid / semi-solid oils such as carnauba wax, candelilla wax, higher fatty acids and higher alcohols; liquid oils such as squalane, liquid paraffin, ester oil, diglyceride, triglyceride, and silicone oil; perfluoropolyether, perfluorodecalin, perfluorooctane Fluorinated oils such as water-soluble and oil-soluble polymers, surfactants, ethanol, preservatives, antioxidants, pigments, thickeners,
pH adjusters, fragrances, UV absorbers, humectants, blood circulation promoters,
A cooling sensation, an antiperspirant, a bactericide, a skin activator, and the like can be appropriately added as long as the effects of the present invention are not impaired.

The cosmetic of the present invention can be produced according to a usual method, and includes, for example, makeup cosmetics such as foundation, face powder, blusher, eyeshadow, etc .; powders for body cosmetics such as body powder, baby powder and the like. It can be in the form of body cosmetics.

[0030]

According to the cosmetic of the present invention, by using a powder obtained by treating a fine powder having a specific average particle diameter and a refractive index with a fluorine compound, the effect of the fluorine treatment is improved on the skin. It is excellent in usability, and evenly adheres fine powder to the skin, and due to its optical effect, it is excellent in the effect of making irregularities such as pores and small wrinkles inconspicuous with a natural finish, and its effect is sustained. .

[0031]

EXAMPLES Next, the present invention will be further described with reference to examples, but the present invention is not limited to these examples.
In addition, all the average particle diameters shown in the examples were obtained by using a scanning electron microscope (manufactured by JEOL Ltd., JSM-840), depositing gold on the sample, and then obtaining an electron micrograph by a normal observation method. The image was taken, the particle size was measured for 300 primary particles, and the average value was obtained. The particle diameter indicates the diameter of the primary particles in the case of a true spherical powder, and indicates the average value of the major axis and the minor axis of the primary particles in the case of powders having other shapes.

Reference Example 1 A round-bottomed flask was charged with 150 g of spherical silica (average particle size: 0.3 μm, coefficient of variation: 20%, refractive index: 1.45), and heated to 60 ° C. while mixing. In addition, (C ₆ F
₁₃ CH ₂ CH ₂ O) ₂ P (O) OH 13 g with isopropyl ether 1
Dissolve and heat (50 ° C) to 500g and add
Mix at 60 ° C. for 4 hours. 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 spherical silica.

Reference Example 2 ₁₇ g of (C ₈ F ₁₇ CH ₂ CH ₂ O) ₂ P (O) OH and 1500 g of isopropyl alcohol were placed in a round-bottom flask, dissolved by heating to 60 ° C., and spherical polymethacrylic acid was added thereto. Methyl resin (average particle size 0.4 μm, coefficient of variation 30%, refractive index 1.4)
9) 150 g was added and mixed at 60 ° C. for 4 hours. Thereafter, isopropyl alcohol was distilled off under reduced pressure at 50 to 60 ° C., and the residue was dried to obtain 161 g of a fluorine compound-treated spherical poly (methyl methacrylate) resin.

Reference Example 3 Spherical silicone resin (average particle size 0.5 μm, refractive index 1.
5) Put 150 g into a round bottom flask and add (C ₈ F ₁₇ CH ₂
7.5 g of a 1: 1 mixture of CH ₂ O) P (O) (OH) ₂ and (C ₈ F ₁₇ CH ₂ CH ₂ O) ₂ P (O) OH is dissolved in 1500 g of isopropyl alcohol by heating (50 ° C.) Add what you have done and add 4
Mix for hours. Thereafter, isopropyl alcohol was distilled off under reduced pressure at 40 to 50 ° C and dried to obtain 150 g of a fluorine compound-treated spherical silicone resin.

Reference Example 4 Spherical silica (average particle size: 0.5 μm, refractive index: 1.45) 5
0 g was placed in a round-bottom flask, to which was added a solution prepared by dissolving 6.7 g of a 15% aqueous solution of perfluoroalkylphosphate diethanolamine salt (AG530, manufactured by Asahi Glass Co., Ltd.) in 500 g of water, and added at 60 ° C. for 4 hours. Mixed. Next, hydrochloric acid was added, followed by filtration, washing with water several times, and drying to obtain 51 g of a fluorine compound-treated spherical silica.

Example 1 A powder foundation having the composition shown in Table 1 was produced.
The finished product, the feeling upon use, and the durability of the makeup when used were evaluated. Table 1 shows the results.

(Preparation method) The powder components were mixed using a Henschel mixer, and an oil was added thereto, followed by further mixing. This was filled in a middle plate to obtain a solid powder foundation.

(Evaluation Method) (1) Finish: The finish when the foundation was applied to the face was visually evaluated by a specialized panelist according to the following criteria. ◎: Irregularities such as pores and fine wrinkles are almost inconspicuous. ；: Irregularities such as pores and fine wrinkles are slightly noticeable. Δ: Unevenness such as pores and fine wrinkles is conspicuous. ×: Irregularities such as pores and fine wrinkles are very conspicuous.

(2) Feeling of Use: A professional paneler applied the foundation to the face with a sponge, and the feeling of use at that time was evaluated according to the following criteria. A: The foundation is very good. ○: The foundation has good extension. Δ: The foundation is slightly spread. ×: The foundation is poorly spread.

(3) Sustainability of Makeup: The presence or absence of makeup loss 4 hours after the foundation was applied to the face was visually evaluated by a specialized panelist according to the following criteria. A: Almost no makeup was lost. ；: The makeup is slightly lost. Δ: makeup lost. ×: Makeup loss is severe.

[0041]

[Table 1]

Example 2 A powder foundation having the composition shown in Table 2 was used in Example 1.
Manufactured in the same way as above, the finish when using this,
The feeling of use and the durability of the makeup were evaluated in the same manner as in Example 1. Table 2 shows the results.

[0043]

[Table 2]

Example 3 A powder foundation having the composition shown in Table 3 was used in Example 1.
Manufactured in the same way as above, the finish when using this,
The feeling of use and the durability of the makeup were evaluated in the same manner as in Example 1. Table 3 shows the results.

[0045]

[Table 3]

Example 4 A loose type face powder having the composition shown in Table 4 was produced, and the finish, feeling of use, and long-lasting makeup when using the same were evaluated in the same manner as in Example 1. Table 4 shows the results.

(Preparation method) The powder components were mixed using a Henschel mixer, an oil was added thereto, and the mixture was further mixed, and then a loose type face powder was obtained through a sieve.

[0048]

[Table 4]

Example 5 (Powder Foundation) In the inventive products 1 and 2 of Example 1, the components (1) to
In place of the powder of (8), each was replaced with U.S. Pat.
Using a powder treated with a perfluoroalkyl phosphate according to the method described in No. 632744, and further using a perfluoroalkyl ether (FOMBLIN HC / 04 manufactured by Ausimont) instead of the methylpolysiloxane of the component (12), respectively Was added in the same amount as in Example 1, and a powder foundation was obtained by the same production method. Each of the obtained powder foundations had good slip on the skin, had an excellent effect of making irregularities such as pores and fine wrinkles inconspicuous, and had good makeup persistence.

Example 6 (Powder Foundation) In the inventive products 3 to 8 of Example 2, the components (1) to
In place of the powder of (7), it was replaced with US Pat.
Using a powder treated with a perfluoroalkyl phosphate according to the method described in No. 2744, and further using a perfluoroalkyl ether (FOMBLIN HC / 04, manufactured by Asimont Corporation) in place of the methylpolysiloxane of the component (14), Was added in the same amount as in Example 2, and a powder foundation was obtained by the same production method. Each of the obtained powder foundations had good slip on the skin, had an excellent effect of making irregularities such as pores and fine wrinkles inconspicuous, and had good makeup persistence.

Example 7 (Powder Foundation) In the products 9 to 13 of the present invention of Example 3, the components (1) to
In place of the powder of (7), each was replaced with U.S. Pat.
Using spherical powder treated with a perfluoroalkyl phosphate according to the method described in No. 632744, and further using perfluoroalkyl ether (FOMBLINHC / 04 manufactured by Ausimont Co.) instead of methylpolysiloxane of component (13), respectively Was added in the same amount as in Example 3, and a powder foundation was obtained by the same production method. Each of the obtained powder foundations had good slip on the skin, had an excellent effect of making irregularities such as pores and fine wrinkles inconspicuous, and had good makeup persistence.

Example 8 (Loose type face powder) In the products 14 to 20 of the present invention of Example 4, the components (1) to
In place of the powder of (4), each was replaced with U.S. Pat.
Using a powder treated with a perfluoroalkyl phosphate according to the method described in No. 632744, and further using a perfluoroalkyl ether (FOMBLIN HC / 04 manufactured by Ausimont) instead of the methylpolysiloxane of the component (12), respectively Was added in the same amount as in Example 4, and mixed with a Henschel mixer to obtain a face powder. Each of the obtained face powders had good slip on the skin, had an excellent effect of making irregularities such as pores and fine wrinkles inconspicuous, and had good makeup persistence.

Example 9 (Red) A reddish red having the following composition was produced.

[0054]

(Ingredients) (%) Mica (average particle size 6 μm) 12.94 Talc (average particle size 10 μm) 20.0 Spherical nylon (average particle size 5 μm) 30.0 Bengala 0.14 Yellow iron oxide 0. 11 Black iron oxide 0.01 Red No. 226 0.40 Fluorine treated spherical polymethyl methacrylate resin (Reference Example 2) 30.0 Methyl polysiloxane (6cs) 6.4

(Preparation method) The powder components were mixed using a Henschel mixer, and an oil was added thereto, followed by further mixing. This was filled in a middle plate to obtain a blusher. The obtained blusher had good slip on the skin, was excellent in the effect of making irregularities such as pores and fine wrinkles inconspicuous, and was excellent in persistence of makeup.

Example 10 (Powder eye shadow) A powder eye shadow having the following composition was produced.

[0057]

(Ingredients) (%) Mica (average particle size 6 μm) 13.8 Sericite (average particle size 8 μm) 15.0 Spherical polymethyl methacrylate resin (average particle size 5 μm) 30.0 Bengala 1.7 Iron oxide yellow 0.3 Black iron oxide 1.2 Ultramarine blue 2.0 Fluorinated spherical silica (Reference Example 1) 30.0 Squalane 6.0

(Preparation method) The powder components were mixed using a Henschel mixer, and an oil was added thereto, followed by further mixing. This was filled in a middle plate to obtain a powder eye shadow. The obtained powder eye shadow had good slip on the skin, was excellent in the effect of making irregularities such as pores and fine wrinkles inconspicuous, and was excellent in persistence of makeup.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-25019 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61K ^7/ 00-7/50

Claims (5)

(57) [Claims] 1. A fine powder having an average particle size of more than 0.1 μm and not more than 2 μm and a refractive index of not more than 2 is converted into polyfluoroalkylphosphoric acid, fluoroalkyldi (oxyethyl) amine phosphate, perfluorosulfuric acid A cosmetic comprising a powder treated with one or more fluorine compounds selected from salts, perfluorocarboxylates and perfluoroalkylsilanes. 2. The cosmetic according to claim 1, wherein the treatment amount of the fluorine compound is 0.1 to 30% by weight based on the fine powder. 3. The cosmetic according to claim 1, wherein the fine powder is a monodispersed spherical powder. 4. The cosmetic according to claim 1, further comprising a spherical powder having an average particle size of 3 to 50 μm. 5. The cosmetic according to claim 1, further comprising 1 to 20% by weight of titanium oxide.