JPH0539209A - Complex cosmetic powder and cosmetic containing the same powder - Google Patents

Abstract

PURPOSE:To obtain cosmetic powder, excellent in water and oil repellency and improved in feeling of use, especially smoothness without impairing function of powder capable of absorbing ultraviolet rays, etc., and a cosmetic containing the aforementioned powder and excellent in resistance to water, sebum, oil, etc. CONSTITUTION:Complex cosmetic powder is obtained by compounding (A) water and oil repellent inorganic powder prepared by treating the surface of inorganic powder having 0.01-0.5mum average particle diameter with a compound expressed by the formula (Rf is 3-21C straight-chain or branched perfluoroalkyl or perfluorooxyalkyl which may be of a single or mixed chain length; (n) is an integer of 1-12; (y) is 1, 2 or 3; M is H, alkali metal, ammonium or substituted ammonium) with (B) spherical powder having a larger grain diameter than that of the aforementioned inorganic powder and preferably l-100mum, especially 5-20mum average grain diameter. The resultant complex composite powder has the above mentioned effects. A cosmetic containing the complex powder has these effects and is further excellent in preventive effects (makeup durability) on makeup disorder with sebum, etc., good in extensibility on the skin and improved in feeling of use, especially smoothness.

Description

Detailed Description of the Invention

[0001]

The present invention has excellent water and oil repellency,
The present invention relates to a composite cosmetic powder which does not cause makeup deterioration, has good spreadability on the skin, and has a good feeling in use, and a cosmetic material containing the composite cosmetic powder. More specifically, a composite of a water-repellent / oil-repellent inorganic powder obtained by surface-treating an inorganic powder with a phosphoric acid ester having a perfluoroalkyl group and a spherical powder having an average particle diameter larger than that of the inorganic powder are prepared. The present invention relates to a composite cosmetic powder and a cosmetic containing the composite cosmetic powder.

[0002]

2. Description of the Related Art Cosmetics containing cosmetic powders include makeup cosmetics such as foundation, white powder, blusher, eye shadow, eyebrow, body powders and baby powders. Cosmetics are commercially available. In cosmetics containing these cosmetic powders, cosmetic properties such as elongation on the skin, smoothness, and makeup loss, especially makeup degradation due to sebum are problems.

In recent years, it has been proposed to treat the powder with a fluorine compound to impart water repellency and oil repellency to the powder for the purpose of preventing the makeup from being damaged by the sebum of the above cosmetics (Japanese Patent Application Laid-Open No. 2000-242242). JP-A-55-167209, JP-A-62-250074
No. 1-180811 and U.S. Pat. No. 3,632,744). However, these water-repellent and oil-repellent inorganic powders have smoothness in terms of feeling in use.
It has the drawback of being extremely worse than before treatment with a fluorine compound.

Further, in recent cosmetics, especially powder cosmetics,
Since it protects the skin from ultraviolet rays, the function of protecting the ultraviolet rays is indispensable. Therefore, most powder cosmetics contain ultraviolet absorbers such as titanium oxide and zinc oxide. The smaller the average particle size of these inorganic ultraviolet absorbers, the greater the effect. However, if such an inorganic ultraviolet absorber is blended into a cosmetic composition as it is, there is a problem in terms of feeling in use such as poor elongation and poor feel (squeak).

Therefore, an object of the present invention is to provide a cosmetic powder which is excellent in water repellency and oil repellency and which is excellent in feeling of use, particularly smoothness, without impairing the function of the powder such as absorbing ultraviolet rays. Containing the powder, it has good water resistance, sebum resistance and oil resistance, has an excellent effect of preventing makeup deterioration (makeup lasting) due to sebum, etc., and has good spreadability on the skin, feeling in use, especially smoothness. To provide excellent cosmetics.

[0006]

Means for Solving the Problems As a result of intensive studies, the present inventors have carried out a surface treatment of a specific inorganic powder with a phosphoric acid ester having a perfluoroalkyl group, and then the surface treatment of the specific inorganic powder with a specific spherical powder. A composite cosmetic powder having water repellency and oil repellency, an excellent feeling in use, and a function of the powder alone is not obtained by forming a composite, and the cosmetic containing the composite powder is We have found that it achieves the purpose.

The present invention has been made on the basis of the above findings, in which an inorganic powder having an average particle diameter of 0.01 to 0.5 μ is converted into phosphoric acid having a perfluoroalkyl group represented by the following general formula (I). Provided is a composite cosmetic powder comprising a composite of a water-repellent / oil-repellent inorganic powder surface-treated with an ester and a spherical powder having an average particle diameter larger than that of the inorganic powder.

[RfC _n H _2n O] _y PO (OM) _3-y (I) (In the formula, Rf represents a perfluoroalkyl group having 3 to 21 carbon atoms or a perfluorooxyalkyl group. Shown, straight-chain or branched, even with a single chain length,
It may have a mixed chain length. n shows the integer of 1-12 and y shows the number of 1-3. M represents hydrogen, alkali metal, ammonium or substituted ammonium. ) Further, the present invention contains the composite cosmetic powder of the present invention,
It is to provide cosmetics.

First, the composite cosmetic powder of the present invention will be described in detail below. Examples of the inorganic powder used in the present invention include silicic acid, silicic acid anhydride, magnesium silicate, talc, sericite, mica, kaolin, red iron oxide, clay, bentonite, titanium-coated mica, bismuth oxychloride, zirconium oxide, Magnesium oxide, zinc oxide flower, titanium oxide, aluminum oxide, calcium sulfate,
Examples thereof include barium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, iron oxide, ultramarine blue, chromium oxide, chromium hydroxide, calamine and carbon black.

Such an inorganic powder has a particle size of 0.01.
˜0.5 μ, preferably 0.05 to 2 μ.
When it is less than 0.01 μ, the feel of the composite powder is deteriorated, which is not preferable, and when it exceeds 0.5 μ, the compounding is not completed completely, which is not preferable. The average particle diameter 0.0
Examples of the phosphoric acid ester having a perfluoroalkyl group represented by the general formula (I) used for the surface treatment of 1 to 0.5 μm of inorganic powder include diheptadecafluorodecylphosphoric acid [(C ₈ F ₁₇ C ₂ H ₄ O) ₂ PO (O
H)], heptadecafluorodecyl phosphate [(C ₈ F ₁₇
C ₂ H ₄ OPO (OH) ₂ ], sesqui form of diheptadecafluorodecylphosphate and heptadecafluorodecylphosphate [(C ₈ F ₁₇ C ₂ H ₄ O) _1.5 PO (OH) _1.5 ], etc. Alkali metal salts, ammonium salts or substituted ammonium salts of Here, the substituted ammonium salt refers to a salt of an alkanolamine such as monoethanolamine or diethanolamine or a basic amino acid such as lysine or arginine.

As the spherical powder to be combined with the inorganic powder surface-treated with the above phosphoric acid ester, polyester,
Polyethylene, polystyrene, methyl methacrylate resin, 12 nylon, 6 nylon, copolymer of styrene and acrylic acid, polypropylene, vinyl chloride, Teflon,
Various plastics such as acrylic beads, polyolefin powder, spherical alumina, silicon resin, spherical silica,
Examples thereof include aluminum silicate and cellulose.

The average particle size of the spherical powder is larger than the particle size of the inorganic powder, preferably 1 to 100 μ, and more preferably 5 to 20 μ. Can be appropriately determined depending on the type of cosmetics to be used. If the particle diameter of the spherical powder is less than or equal to the particle diameter of the inorganic powder, the compounding will not be complete, which is not preferable.

Water repellency constituting the composite cosmetic powder of the present invention
To obtain an oil-repellent inorganic powder, the average particle size is 0.01 to
0.5 μm of inorganic powder is surface-treated with a phosphoric ester having a perfluoroalkyl group represented by the above general formula (I). As the surface treatment, various commonly used steps can be adopted. For example, while mixing the powder in a mixing and stirring device such as a Henschel mixer, a vibrating ball mill, a rotary ball mill, or a super mixer, the phosphate ester having a perfluoroalkyl group is used as it is, or in a suitable solvent (for example, water or ethanol). , Isopropyl alcohol, chloroform, Freon R113 and a mixed solvent thereof and the like, and the mixture is added by spraying or dropping, uniformly dispersed, and then dried at room temperature or by heating. As the solvent,
When a perfluoroalkyl group having 8 or more carbon atoms is used, the fluidity of the solvent is extremely low.
113, hexafluorometa-xylene and the like are preferably dissolved in a fluorine-based solvent before use.

The amount of the phosphoric acid ester having a perfluoroalkyl group with respect to the above inorganic powder is preferably 0.1.
01 to 30% by weight, more preferably 0.5 to 1
It is 5% by weight. If it is less than 0.01% by weight, it is difficult to obtain sufficient water resistance and oil resistance, and if it exceeds 30% by weight, the feeling of use tends to be poor. The composite cosmetic powder of the present invention is a composite of the water-repellent / oil-repellent inorganic powder and a spherical powder having an average particle size larger than that of the inorganic powder. This compounding is performed as follows, for example.

That is, the water-repellent / oil-repellent inorganic powder and the spherical powder are roughly mixed and treated with an impact crusher such as a ball mill or a hammer mill, and a high speed such as a hybridizer manufactured by Nara Machinery Co., Ltd. When the treatment by the air flow impact method or the treatment by a grinding type pulverizer such as Ong Mill of Hosokawa Micron Co., Ltd. is carried out, the water-repellent / oil-repellent inorganic powder is adhered and immobilized on the surface of the spherical powder. A composite cosmetic powder of is obtained.

The compounding ratio of the water-repellent / oil-repellent inorganic powder and the spherical powder is preferably 0.01 to 100 in the former with respect to 1 in the latter, and particularly 0.1. ~
A range of 1 is preferred. If it is less than 0.01, it is difficult to obtain the effect of the inorganic powder, and if it exceeds 100, the compounding becomes insufficient and the feel may be deteriorated. Next, the cosmetic material of the present invention containing the above-described composite cosmetic powder of the present invention will be described in detail.

The content of the above composite cosmetic powder in the cosmetic of the present invention is preferably 0.5 to 80% by weight, and particularly preferably 2.0 to 40% by weight. If it is less than 0.5% by weight, it is difficult to exert the effect, and if it exceeds 80% by weight,
The cosmetics themselves may have a bad feel. In the cosmetics of the present invention, as the components other than the above-mentioned composite cosmetic powder, if necessary, the components that are mixed in ordinary cosmetics are blended. Examples of these components include solid and semi-solid oil components such as petrolatum, lanolin, ceresin, microcrystalline wax, carnauba wax, candelilla wax, higher fatty acids and higher alcohols; squalane, liquid paraffin, ester oil, diglyceride, triglyceride, silicone. Fluid oils such as oils; Fluorine-based oil agents such as perfluoropolyether, perfluorodecalin, perfluorooctane; water-soluble and oil-soluble polymers, surfactants, inorganic and organic pigments, inorganics treated with silicon or fluorine compounds, and Coloring agents such as organic pigments and organic dyes, ethanol, preservatives, antioxidants, pigments, thickeners, pH adjusters, fragrances, ultraviolet absorbers, humectants, blood circulation promoters, cooling sensation agents, antiperspirants, Examples include bactericides, skin activating agents, etc. It is a function.

The cosmetic composition of the present invention can be produced by a conventional method, including a foundation, eye shadow,
It can be applied to makeup cosmetics such as blusher and basic cosmetics such as emulsions and creams.

[0019]

[Function] The powder for cosmetics of the present invention is incorporated into cosmetics,
It does not impair the function of the powder, prevents makeup breakdown due to sebum, etc., improves the spread of cosmetics on the skin, and imparts a good feel to the skin.

[0020]

EXAMPLES Next, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples. In addition, all the following compounding amounts are weight
Is. Example 1 150 g of fine particle titanium oxide (manufactured by Teika Co., Ltd.) having an average particle diameter of 0.06 μ was used in a round bottom flask (or kneader).
Put, _{to, C 8 F 17 CH 2 CH} 2 OP (O) (O
H) ₂ and (C ₈ F ₁₇ CH ₂ CH ₂ O) ₂ P (O) OH in a mixture of about 1: 1 (7.5 g) dissolved in 1500 g of isopropyl alcohol by heating (50 ° C.) was added. , 60 ° C. for 4 hours. Then, isopropyl alcohol was distilled off under reduced pressure at 40 to 50 ° C., and dried to obtain 155 g of water / oil repellent titanium oxide. Next, 40 g of the water-repellent / oil-repellent titanium oxide thus obtained and 60 g of nylon powder (manufactured by Toray Industries, Inc.) having an average particle size of 6 μ were roughly mixed in advance and used as a hybridizer (Nara Machinery Co., Ltd.). Manufactured) and treated for 2 minutes to obtain 80 g of the composite cosmetic powder of the present invention.

Example 2 150 g of the particulate titanium oxide used in Example 1 was placed in a round bottom flask (or kneader), and [(C _m F
_{2m + 1 C 2 H 4 O} ) 1.5 PO (OH) 1.5 ] (m = 6 to 1
7.5 (average = 9), 7.5 g of which was dissolved by heating (50 ° C.) in 1500 g of isopropyl alcohol was added and mixed at 60 ° C. for 4 hours. Then, isopropyl alcohol was distilled off under reduced pressure at 40 to 50 ° C., and dried to obtain 155 g of water / oil repellent titanium oxide. Next, 40 g of the water-repellent / oil-repellent titanium oxide obtained and 60 g of polymethylmethacrylate powder (produced by Matsumoto Yushi-Seiyaku Co., Ltd.) having an average particle size of 6 μm.
Was charged into a ball mill and mixed and pulverized for 1 hour to obtain 80 g of the composite cosmetic powder of the present invention.

Comparative Example 1 40 g of polymethylhydrogensiloxane treated fine particles of titanium oxide
And polymethylmethacrylate powder (Matsumoto Yushi-Seiyaku Co., Ltd.)
60 g) were placed in a ball mill and mixed and pulverized for 1 hour to obtain 80 g of a comparative powder. Comparative Example 2 A comparative powder (composite powder) was prepared by roughly mixing 40 g of water- and oil-repellent titanium oxide obtained in the same manner as in Example 2 and 60 g of polymethylmethacrylate powder (manufactured by Matsumoto Yushi-Seiyaku Co., Ltd.). No powder).

Test Example 1 Each of the powders obtained in Examples 1 and 2 and Comparative Examples 1 and 2 was evaluated for water repellency, oil repellency and feel of use by the following evaluation methods. The results are shown in Table 1 below. (Water repellency evaluation method) Put 15 ml of water in a 30 ml beaker, float about 0.05 g of each powder on the water, shake the beaker and observe the dispersibility of the powder in water. It was evaluated according to the standard.

Evaluation Criteria 0: The powder was immediately dispersed in water. 1: When the beaker was shaken, the powder was almost dispersed in water within 30 seconds. 2: When the beaker was shaken, the water became cloudy after 1 minute, but some powder floated on the water. 3: When the beaker was shaken, the water became cloudy after 1 minute, but many powders floated on the water. 4: When the beaker was shaken, the water did not turn cloudy after 1 minute, and no powder dispersed in water was observed. No powder dispersed in water was observed even if the beaker was shaken for 5 minutes or more.

(Evaluation Method of Oil Repellency) Evaluation was carried out in the same manner as in the evaluation method of water repellency except that squalane was placed in a beaker for 30 ml instead of water. (Evaluation Method of Feeling) The feeling of the powder such as smoothness, squeaky feeling, and rough feeling was evaluated by 5 professional panelists in the following 5 grades from 1 to 5 and shown as an average value.
The feel of untreated powder of sericite A (manufactured by Horie Kako Co., Ltd.) having an average particle size of 7 μ was set to a standard value of 3.0. 1: The feeling of smoothness is poor. 2: The feeling of smoothness is a little bad. 3: Normal (equivalent to sericite A) 4: Fairly smooth feeling and the like. 5: Good feeling such as smoothness.

[0026] It can be seen from Table 1 above that the cosmetic powder of the present invention is excellent in water repellency, oil repellency and feel.

Example 3. Powder Foundations Powder foundations having the compositions shown in Table 2 below were produced by the following production methods, and the makeup retention against sweat and sebum and the feeling of use were evaluated by the following evaluation methods. The results are shown in Table 3. (Production method) The powder components were mixed and pulverized, transferred to a Henschel mixer, and the oil agent and the fragrance were added and mixed to be uniform. This was press-molded on a gold plate to obtain a product. (Evaluation method) The makeup and the feeling of use were sensory-evaluated by 10 professional panelists, and the results were shown according to the following criteria.

Good: 8 or more are good. Δ: 4 to 7 are good. X: Less than 4 people are good. As is clear from Table 3 above, the product of the present invention was a powder foundation having excellent makeup retention and feeling in use as compared with the comparative product.

Example 4. Blusher A blusher having the following composition was produced in the same manner as in Example 3. (Composition)% by weight (1) Water-repellent / oil-repellent pigment (after being treated in the same manner as the titanium oxide of Example 1 and mixed later) Kaolin balance mica 13.0 titanium oxide 12.0 red No. 202 2.4 oxidation Iron (red, black, yellow) 5.0 (2) Treated powder of Example 2 10.0 (3) Squalane 7.5 (4) Dimethylpolysiloxane 7.5 (5) Preservative 0.1 (6 ) Fragrance 0.05 Example 5. Powder Eye Shadow A pigment other than titanium mica was first mixed and pulverized, and then titanium mica was mixed. Otherwise in the same manner as in Example 3, a powder eye shadow having the following composition was produced. (Composition)% by weight (1) Water-repellent / oil-repellent pigment (after being treated in the same manner as the titanium oxide of Example 2 and mixed later) Mica titanium 4.9 sericite balance mica 24.7 iron oxide (red, yellow) , Black) 2.0 Ultramarine 9.8 Dark blue 14.6 (2) Powder treated in Example 1 10.0 (3) Dimethylpolysiloxane 1.9 (4) Squalane 1.9 (5) Vaseline 1.9 (6) Sorbitan trioleate 1.0 (7) Preservative 1.0 (8) Perfume 0.1 Example 6. Dual-use powder foundation A dual-use powder foundation having the following composition was produced in the same manner as in Example 5. (Composition)% by weight (1) Water-repellent / oil-repellent pigment (after being treated in the same manner as in Example 1, mixed later) Mica Balance Talc 4.8 Titanium oxide 14.0 Mica titanium 3.5 3.5 Iron oxide (red, (Yellow, black) 8.2 Zinc oxide 4.5 Aluminum oxide 10.0 Barium sulfate 5.0 (2) Treated powder of Example 2 10.0 (3) Dimethylpolysiloxane 4.0 (4) Lanolin 6. 0 (5) Vaseline 1.0 (6) Liquid paraffin 1.0 (7) Isopropyrimyristate 1.0 (8) Preservative 1.5 (9) Perfume 0.1 Example 7. Two-layer separation type sunscreen emulsion After the oil phase was dissolved at room temperature, a pigment was added and dispersed with a disper. The aqueous phase was added with stirring to emulsify to prepare a sunscreen emulsion having the following composition. (Composition) (% by weight) (1) Octamethylcyclotetrasiloxane 25.0 (2) Perfluoropolyether 10.0 (FOMBLIN HC-04 manufactured by Montefloss) (3) Dimethylpolysiloxane / polyoxyalkylene copolymer 1.0 (4) Glycerin 2.0 (5) Ethanol 12.0 (6) Purified water Residual amount (7) Octyl methoxycinnamate 2.0 (8) Zinc oxide (same as the titanium oxide of Example 2 Treated) 7.5 (9) Treated powder of Example 1 7.0 (10) Fragrance slight amount Example 8. Sunscreen cream Components 10 and 12 dispersed in component 9 with a disper and a homogeneous mixed solution of components 6 to 8 are added to an aqueous component of components 1 to 5 with stirring to emulsify, and a sunscreen having the following composition A cream was produced. (Composition) (wt%) (1) polyoxyethylene (50) hydrogenated castor oil 0.5 (2) polyoxyethylene (20) sorbitan palmitate 1.0 (3) glycerin 6.0 (4) 1, 3 -Butylene glycol 6.0 (5) Purified water 15.5 (6) Squalane 5.0 (7) Jojoba oil 5.0 (8) Octamethylcyclotetrasiloxane 18.0 (9) Perfluoropolyether 33.0 (FOMBLIN HC-04 manufactured by Montefloss Co., Ltd.) (10) Titanium oxide (treated in the same manner as titanium oxide of Example 1) 1.0 (11) Treated powder of Example 1 7.0 (12) Methoxycinnamon Octyl acid 2.0 Example 9. Two-layer separation type liquid foundation After dissolving the oil phase at room temperature, a pigment was added and dispersed with a disper. The aqueous phase was added with stirring to emulsify to produce a liquid foundation having the following composition. (Composition) (wt%) (1) Pigment (mixed after the same treatment as the titanium oxide of Example 1) -Titanium oxide 6.0-Iron oxide (red, yellow, black) 1.2 (2 ) Treated powder of Example 1 9.0 (3) Octamethylcyclotetrasiloxane 20.0 (4) Dimethylpolysiloxane 2.0 (Shin-Etsu Chemical Co., Ltd., KF-96A, 6cs) (5) Dimethylpolysiloxane Polyoxyalkylene copolymer 1.0 (6) Perfluoropolyether 10.0 (FOMBLIN HC-04 manufactured by Montefloss) (7) Glycerin 2.0 (8) Ethanol 15.0 (9) Purified water balance ( 10) Fragrance Suitable amount The cosmetics of the present invention obtained in Examples 3 to 9 are all
It had an excellent feeling in use and had a very good makeup hold.

[0030]

EFFECTS OF THE INVENTION The composite cosmetic powder of the present invention is a cosmetic product which has excellent water and oil repellency without impairing the functions of the powder, such as absorbing ultraviolet rays, and which is excellent in feeling of use, particularly smoothness. The powder of the present invention contains the powder, has good water resistance, sebum resistance, and oil resistance, and has an excellent effect of preventing makeup deterioration due to sebum (makeup lasting), and It spreads well on the skin and has excellent feel to the touch, especially smoothness.

Claims (2)

[Claims] 1. A water-repellent / oil-repellent inorganic powder obtained by surface-treating an inorganic powder having an average particle size of 0.01 to 0.5 μm with a phosphoric ester having a perfluoroalkyl group represented by the following general formula (I). A composite cosmetic powder comprising a body and a spherical powder having an average particle size larger than that of the inorganic powder. [RfC _n H _2n O] _y PO (OM) _3-y (I) (In the formula, Rf represents a perfluoroalkyl group having 3 to 21 carbon atoms or a perfluorooxyalkyl group, and Even if it is a chain or branched and has a single chain length,
It may have a mixed chain length. n shows the integer of 1-12 and y shows the number of 1-3. M represents hydrogen, alkali metal, ammonium or substituted ammonium. ) 2. A cosmetic containing the composite cosmetic powder according to claim 1.