JP4781855B2 - Composite powder and makeup cosmetic containing the composite powder - Google Patents

Description

  The present invention relates to a composite powder comprising a core powder and an α-tocopherol phosphate ester salt and a makeup cosmetic containing the composite powder.

  Tocopherols, known as vitamin E, easily penetrate into the skin and have effects of preventing lipid peroxide formation, strengthening cell membranes, promoting blood circulation, etc. While being used in cosmetics and quasi-drugs, they are easily oxidized and not. It is stable and has poor solubility in water. Then, the tocopherol phosphate salt which improved the stability and water solubility was developed by phosphoric esterifying tocopherol, and the cosmetics containing this have been proposed (patent document 1).

Patent No. 3035742

  Among these tocopherol phosphate salts, α-tocopherol phosphate ester salt which is an α form is a powder having high physiological effects such as moisturizing action and antioxidant action, and when this aqueous solution is applied to the skin, it is moist. You can feel the feel and peculiar viscosity. However, the powdery base of α-tocopherol phosphate ester salt is highly hygroscopic and deliquescent, and therefore has the property of absorbing moisture and causing agglomeration and becoming agglomerated. It becomes difficult to crush again because it adheres to the surface.

  In anticipation of the physiological action of α-tocopherol phosphate ester salt and its feeling of use, addition to makeup cosmetics was studied, but many makeup cosmetics take the form of powder cosmetics with low moisture content. It is difficult to dissolve α-tocopherol phosphate ester salt in water as in skin care cosmetics. Therefore, we tried to add α-tocopherol phosphate salt to the makeup cosmetics in the form of powder, but it was difficult to disperse uniformly with other ingredients due to the occurrence of aggregation during the production. However, there was a problem in stability as a product due to the progress of moisture absorption and generation of new aggregates. Further, the feeling of use also has the disadvantage that the clumps are perceived as rough, the adhesion of the base to the skin is low, the makeup is poor, and the makeup is liable to break down. In particular, in the case of a solid powder cosmetic, agglomerates are formed on the surface of the base, causing a caking phenomenon in which the amount of the base to be applied to a cosmetic tool such as a puff is reduced, and there is a problem in usability.

  On the other hand, in light of the current situation where skin care effects are required even in makeup cosmetics like today, in the form of stabilized skin care effects such as α-tocopherol phosphate ester salts, -It is important to develop a dosage form that takes advantage of the moist feel of the tocopherol phosphate ester salt and the adhesion to the skin due to its adhesive properties.

  Accordingly, an object of the present invention is to uniformly contain α-tocopherol phosphate ester salt that easily aggregates and hardens due to moisture absorption or the like in the cosmetic, and is smooth and moist to use in cosmetics. An object of the present invention is to provide makeup cosmetics such as powder cosmetics and oil-based cosmetics that have excellent usability and adhesion to the skin.

  That is, the present invention can uniformly disperse the other components of the makeup cosmetic without agglomerating and solidifying the composite powder comprising the core powder and the α-tocopherol phosphate ester salt, By containing the composite powder in makeup cosmetics such as solid powder cosmetics, powder cosmetics, and oily cosmetics, the cosmetics are smooth and easy to use and have a moist feel and adhesion to the skin. The characteristic that the property is excellent was found. The composite powder as used in the present invention refers to a substance that forms a powder by integrating, adhering, adsorbing, bonding or impregnating different kinds of components to the core powder as a base material.

  The composite powder composed of the core powder of the present invention and the α-tocopherol phosphate ester salt can be uniformly dispersed with other components of the makeup cosmetic without agglomerating and solidifying. The makeup cosmetics to be contained have the advantage that they are smooth and easy to use in cosmetics and have a moist feeling of use and excellent adhesion to the skin.

  The α-tocopherol phosphate ester salt used in the present invention is a compound represented by Chemical Formula 1.

Ｒ^１、Ｒ^２はそれぞれ水素、金属、アンモニウム、アルキルアンモニウムから選ばれ、同一でも異種でも構わない。 (Chemical formula 1)

R ¹ and R ² are each selected from hydrogen, metal, ammonium and alkylammonium, and may be the same or different.

  As the core powder used as the base material in the present invention, any material that is usually used in cosmetics can be applied. For example, for inorganic pigments, talc, mica, synthetic mica, kaolin, sericite, bentonite, smectite, mica titanium, bismuth oxychloride, silicic acid, silicic anhydride, aluminum magnesium silicate, alumina, titanium oxide, fine particle titanium oxide, Zinc oxide, zirconium oxide, magnesium oxide, barium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, aluminum silicate, magnesium silicate, calcium silicate, barium silicate, hydroxyapatite, boron nitride, metal soap, bengara, yellow oxide Examples thereof include iron, black iron oxide, chromium oxide, chromium hydroxide, carbon black, ultramarine blue and bitumen. For organic powders, nylon, polymethyl methacrylate, polyethylene, polystyrene, cellulose, acetylated cellulose, polyurethane, divinylbenzene / styrene copolymer, silicone resin, epoxy resin, melamine resin, polycarbonate resin, vinyl resin, silk powder Etc. Further, in the tar-based pigments, red No. 104, red No. 106, red No. 201, red No. 202, red No. 204, red No. 205, red No. 206, red No. 226, red No. 227, red No. 228, yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Yellow No. 205, Yellow No. 401, Blue No. 1, Green No. 3, and the like can be mentioned. Two or more kinds of core powders and composites thereof may be used, and the shape and particle size of the core powder are not particularly limited.

  The composite powder of the present invention has a sticky and moist feeling derived from α-tocopherol phosphate ester salt, and when blended in a cosmetic, smoothness and usability to a cosmetic tool are smoothed. In particular, when the core powder is talc, mica, synthetic mica, kaolin, sericite, organic powder spherical nylon or spherical cellulose, which is classified as so-called plate powder with high flatness, the core powder In addition to the smoothness of the original elongation, adhesion and moist feeling are added to improve the feeling of use, so that the effect of the combination of the present invention is exhibited.

  The core powder may or may not be surface-treated in advance by a known method. Further, the surface treatment may be performed after the core powder and the α-tocopherol phosphate salt are combined, and the surface treatment may be performed simultaneously with the combination of the core powder and the α-tocopherol phosphate salt. Examples of surface treatment methods include oil treatment, metal soap treatment, inorganic compound treatment, amino acid treatment, silicone treatment, fluorine compound treatment, pendant treatment, silane coupling agent treatment, titanium coupling agent treatment, and N-acylated lysine treatment. , Polyacrylic acid treatment, plasma treatment, mechanochemical treatment and the like. Moreover, these alpha-tocopherol phosphate ester salts can be used 1 type, or 2 or more types as needed.

  Examples of the method for producing the composite powder of the present invention include a liquid phase method, a gas phase method, and a mechanochemical method. The α-tocopherol phosphate ester salt may be dissolved in water or a solvent in advance and added to the core powder, and an acid or an alkali may be added as necessary to adjust the solubility. As the acid, hydrochloric acid, nitric acid, sulfuric acid, acetic acid and the like can be used, and as the alkali, sodium hydroxide, potassium hydroxide, ammonia, pyridine, amine, sodium carbonate and the like can be used. At this time, the core powder may be previously dispersed in water or a solvent. Reactors are homomixer, disper mill, Henschel mixer, blender, ribbon mixer, planetary, vacuum kneader, rocking mixer, roll mill, bead mill, ball mill, vibration mill, jet mill, super mixer, V-type mixer, autoclave, high pressure dispersion It can be combined using a machine or the like.

  Specifically, as an example of a method for producing a composite powder by a liquid phase method, an α-tocopherol phosphate ester salt is dissolved in water, a base core powder is added and stirred, and then a divalent metal salt A method of adding a trivalent metal salt, an acid, an alkali, or the like and depositing an α-tocopherol phosphate ester salt on the surface of the core powder is mentioned. If the α-tocopherol phosphate ester salt is not dissolved and is added as a powder, it should be used in a low humidity atmosphere to prevent agglomeration before complexing, or a powerful crushing ability such as a jet mill. It is preferable to use a stirrer having Moreover, after compounding, moisture and solvent may be removed and dried by filtration, decompression operation, heating, freeze drying method, or the like. Further, spray drying method, fluidized granulation method and the like can be mentioned, but in any method, α-tocopherol phosphate ester salt is attached to the core powder, adsorbed, bonded or impregnated to form a composite powder. It does not matter if it is formed.

  In the composite powder of the present invention, in consideration of adhesion and moist feeling derived from α-tocopherol phosphate ester salt, the amount of α-tocopherol phosphate ester salt contained in the composite powder is 0.5-15. % By weight is preferred. Furthermore, when considering a moderate feeling of water repellency and smoothness, 2 to 10% by weight is more preferable.

  In the cosmetic containing the composite powder of the α-tocopherol phosphate salt of the present invention, the amount contained as the α-tocopherol phosphate ester salt in the total amount of the cosmetic is 0.01 to 5% by weight. The reason for this is that if it is less than 0.01% by weight, the adhesion to the skin, which is the effect of the present invention, is not sufficient, and if it is 0.01% by weight or more, the adhesion to the skin is excellent, and it is sufficient for cosmetics. can get. Even if it exceeds 5% by weight, the enhancement of the effect cannot be expected. In addition, when compounded into a solid powder cosmetic alone without complexing α-tocopherol phosphate ester salt, the base surface agglomerates and caking under severe conditions with high humidity from 0.01% by weight or more. Therefore, as an effect of the complexing of the present invention, the content of the α-tocopherol phosphate ester salt in the total amount of the cosmetic is not less than 0.01% by weight.

  Furthermore, in the case of blending α-tocopherol phosphate ester salt made into composite powder from the viewpoint of how the powder foundation of solid powder cosmetics that are cosmetics to be applied in a powder state suppresses transpiration of moisture by the coating film If the composite powder containing 2% by weight or more of α-tocopherol phosphate ester salt is contained in 1% by weight or more in the total amount of the solid powder cosmetic, transpiration of water can be suppressed.

  The composite powder of α-tocopherol phosphate ester salt of the present invention can be used regardless of cosmetics, quasi-drugs, and pharmaceuticals. In particular, a method of using the composite powder as a powder is considered. Then, makeup cosmetics, and further, the dosage form is solid powder cosmetics, powder cosmetics, oily cosmetics, water-in-oil type that emulsifies by dispersing the composite powder in the oil phase which is the continuous phase of emulsification Suitable for use in makeup cosmetics in the form of emulsified cosmetics.

  In addition to the composite powder comprising the core powder and α-tocopherol phosphate ester salt of the present invention, the cosmetic composition of the present invention is an ordinary cosmetic composition as long as the effects of the present invention are not impaired as required. , Quasi-drugs, water, fats and oils, waxes, hydrocarbons, fatty acids, alcohols, alkyl glyceryl ethers, esters, silicone oils, fluorine oils, polyhydric alcohols, sugars, polymers, interfaces Activators, moisturizers, UV absorbers, chelating agents, pH adjusters, antioxidants, sequestering agents, bactericides / preservatives, dyes, fragrances, pigments, plasticizers, organic solvents, drugs, animal and plant extracts, constitutions Powders, organic colorants, inorganic colorants, pearl pigments, surface-treated powders, gelling agents, amino acids, peptides, vitamins, and composite powders other than the constituents of the present invention can be appropriately blended. To these Not intended to be constant.

  EXAMPLES Next, although an Example is given and this invention is demonstrated still in detail, this invention is not limited to this.

  10 g of dl-α-tocopherol phosphate sodium salt was dissolved in 500 g of water, and 90 g of sericite (trade name sericite FSE, manufactured by Sanshin Mining Co., Ltd.) was added and stirred. To this, hydrochloric acid was gradually added to make it acidic at pH 2 and further stirred for 1 hour. Then, after adding and neutralizing calcium hydroxide aqueous solution, it filtered, washed with water, and dried under reduced pressure, and obtained about 98g of composite powders.

  10 g of d-α-tocopherol phosphate sodium salt was dissolved in 500 g of water, and 90 g of cellulose (trade name Cellflow C-25, manufactured by Chisso Corporation) was added and stirred. To this was added 15 g of an aluminum chloride 20% aqueous solution, followed by filtration, washing with water, and drying under reduced pressure to obtain about 98 g of a composite powder.

  10 g of dl-α-tocopherol phosphate disodium salt was dissolved in 500 g of water, and 90 g of anhydrous silicic acid (manufactured by Catalyst Kasei Co., Ltd., trade name: Soot Particle Silica P-1500) was added and stirred. This was dried under reduced pressure and then pulverized to obtain about 98 g of composite powder.

  100 g of d-α-tocopherol phosphate potassium salt and 900 g of polymethyl methacrylate (manufactured by Matsumoto Yushi Seiyaku Co., Ltd., trade name: Microsphere M-503) are added to a jet mill and mixed to obtain about 900 g of a composite powder. It was.

  As a comparative example, a simple substance of each α-tocopherol phosphate ester salt was prepared.

[Comparative Example 1]
dl-α-tocopherol phosphate sodium salt

[Comparative Example 2]
d-α-Tocopherol phosphate sodium salt

[Comparative Example 3]
dl-α-tocopherol phosphate disodium salt

[Comparative Example 4]
d-α-Tocopherol phosphate potassium salt

About Examples 1-4 and Comparative Examples 1-4, in order to investigate the production | generation of the lump by moisture absorption, the following test was done.
Fixing and agglomeration test: Take 1 g of sample on a medicine wrapping paper and spread it evenly with a spatula on 10 cm x 10 cm square. Immediately, this is left still for 6 hours in a constant temperature and humidity machine with a temperature of 35 ° C. and a humidity of 75%. Next, the medicine wrapping paper was turned over and lightly struck with a finger, and the presence or absence of the sample remaining on the medicine wrapping paper and the state of the sample were confirmed according to the following criteria.
○: No sample remains on the powder wrapping paper and remains in a powder state and does not clump. △: No sample remains on the paper wrapping paper, but there is some solidity in addition to the powder. Do

  Table 1 shows the results of tests performed on Examples 1 to 4 and Comparative Examples 1 to 4.

  From the results shown in Table 1, the α-tocopherol phosphate ester salt alone is fixed to the medicine-wrapping paper by moisture absorption, whereas the composite powder of the present invention combined with the core powder is all solidified. It does not occur, and it can be seen that the powder state is maintained.

  Next, in order to investigate the difference in the feeling of use of the composite powder depending on the nuclear powder type as Example 5, talc (manufactured by Asada Flour Milling Co., Ltd., trade name talc JA-68R), mica (manufactured by Yamaguchi Mica Industry Co., Ltd., trade name mica) Powder Y-2300), kaolin (trade name Kaolin ASP170, manufactured by Engelhard), sericite (trade name, Sericite FSE, manufactured by Sanshin Mining Co., Ltd.), spherical nylon (trade name, nylon powder SP-500, manufactured by Toray Industries, Inc.) , Spherical cellulose (trade name Cellflow C-25, manufactured by Chisso Corporation), synthetic mica (trade name: PDM-20L, manufactured by Topy Industries, Ltd.), silicic anhydride (trade name: Silicia 350, manufactured by Fuji Silysia Ltd.), spherical silicic acid anhydride (Catalyst Kasei Co., Ltd., trade name: Soot Particle Silica P-1500), Titanium Oxide (Ishihara Sangyo Co., Ltd., trade name: Taipei CR-50), Polymethylmethacrylate (Matsumoto Yushi Seiyaku) Manufactured by trade name Microsphere M-503), boron nitride (trade name: TRESBN T-BN-LB, manufactured by Toray Industries, Inc.) and d-α-tocopherol phosphate sodium salt, Table 2 Composite powders 1 to 12 shown in Table 1 were prepared. The production method conformed to the production method of Example 2.

  About the composite powders 1-12 of Example 5, the difference in feeling of use between the core powder before complexing with d-α-tocopherol phosphate sodium salt and the composite powder after complexing is shown. The items described in 2 were evaluated. As evaluation criteria, the feeling of use was markedly improved as compared with that before compounding, ◎, the improvement was ◯, no difference was Δ, and the feeling of use was x.

  Therefore, from the results of Table 2, in the composite powders 1 to 7 of the present invention, any of the feelings of use is remarkably improved by the composite without impairing the smoothness, adhesion, and moist feeling of spreading. . Therefore, the powders of talc, mica, kaolin, sericite, spherical nylon, spherical cellulose, and synthetic mica are not only fixed by α-tocopherol phosphate salt due to moisture absorption and the effect of preventing aggregation, but also α-tocopherol phosphate ester. It can be seen that the compounding with the salt improves or improves the adhesion and moist feeling while utilizing or improving the smoothness of the original elongation of the powder.

  Next, in order to determine an appropriate content of the α-tocopherol phosphate ester salt in the composite powder, composite powders 13 to 19 having the compositions shown in Table 3 as Example 6 were prepared. The production method conformed to the production method of Example 1 or 2. In addition, as evaluation contents, Table 3 shows the feeling of moistness, smoothness of smoothness, and water repellency, with “Good” as “good”, “Slightly good” as Δ, and “Poor” as bad.

  Therefore, from the results of Table 3, it can be seen that when the content of the α-tocopherol phosphate salt in the composite powder is 0.5% by weight or more, a moist feeling peculiar to the α-tocopherol phosphate salt can be obtained. When the content is excessively increased, the smoothness tends to be lost from about 15% by weight. Therefore, the content of the α-tocopherol phosphate ester salt in the composite powder is 0.5 to 15% by weight, and 2 to 10% by weight when moist feeling, smoothness, and even water repellency are added. It turns out that it is more preferable.

A powder foundation was prepared by the following production method and prescription.
[Production method]
Each powder of the components 1-8 of the following prescription is mixed and pulverized. Thereafter, components 9 to 12 were mixed, added to the powder mixture which had been subjected to pulverization, mixed, then pulverized again and passed through a sieve. This was compression molded into a metal pan to obtain a powder foundation.
[Powder foundation prescription]
Raw material name Weight%
1 Composite powder of Example 1 10.0
2 Silicone-treated talc 24.5
3 Silicone-treated mica 10.0
4 Silicone-treated sericite 30.0
5 Silicone-treated titanium oxide 10.0
6 Silicone-treated Bengala 2.0
7 Silicone-treated yellow iron oxide 3.0
8 Silicone-treated black iron oxide 0.1
9 Squalane 4.0
10 Dimethylpolysiloxane 6.0
11 Preservative 0.2
12 Fragrance 0.2

[Comparative Example 5]
A powder foundation was prepared by the following production method and prescription.
[Production method]
Component 1 of the formulation of Example 7 is not combined with two components of the composite powder, 9.0% by weight of sericite and 1.0% by weight of dl-α-tocopherol phosphate sodium salt. And a powder foundation was obtained by the same production method as in Example 7.

[Comparative Example 6]
A powder foundation was prepared by the following production method and prescription.
[Production method]
Component 1 in the formulation of Example 7 was replaced with sericite, and a powder foundation was obtained by the same production method as in Example 7.

For the powder foundations of Example 7 and Comparative Examples 5 and 6, the composite powder of the present invention was actually blended into the powder foundation to form a composite powder. In order to confirm this, the following test was conducted.
Attachment to skin and feeling of adhesion: Sensory evaluation was conducted by 10 professional panelists, and the following criteria were confirmed.
○: Evaluated as 8 or more good △: Evaluated as 4 to 7 as good ×: Evaluated as 3 or less as good and caking: Continued taking the powder foundation with a puff, and the surface condition and amount of the powder foundation The change was confirmed by the following criteria.
○: There is no aggregate on the surface, and the amount of removal is moderate and does not change. Δ: The aggregate is generated on the surface, but the amount of separation is moderate and does not change. X: The aggregate is formed on the surface, and the amount of separation gradually decreases. To cake

  Table 4 shows the results of testing the powder foundations of Example 7 and Comparative Examples 5 and 6.

  From the results shown in Table 4, the powder foundation of Example 7 blended with the composite powder of the present invention has excellent adhesion and adhesion to the skin, and further, there is no agglomeration or caking on the surface of the powder foundation. Is also found to be an appropriate amount. In addition, the powder foundation of Example 7 was stored at −5 ° C., 5 ° C., 20 ° C., and 40 ° C., and the occurrence of agglomerates and caking did not occur even if the test was performed continuously for 4 weeks every week. I couldn't see it. On the other hand, the foundation of Comparative Example 5 to which α-tocopherol phosphate ester salt was directly added without being complexed formed aggregates on the surface, and the amount of flakes gradually decreased, resulting in caking. Moreover, it turns out that the foundation of the comparative example 6 which does not have (alpha) -tocopherol phosphate ester salt is unsatisfactory in adhesion and adhesion | attachment to skin.

  In order to determine an appropriate content of the α-tocopherol phosphate ester salt in the total amount of the cosmetic, formulation examples 1 to 4 having the compositions shown in Table 5 as Example 8 were prepared. The production method is the same as in Example 7.

  The obtained powder foundation was evaluated in the same manner as in Example 7, and the results are shown in Table 5.

※ｄｌ−α−トコフェロールリン酸エステルナトリウム塩とセリサイトによる複合粉体を予め実施例１と同様の方法で調製した。

* A composite powder composed of dl-α-tocopherol phosphate sodium salt and sericite was prepared in the same manner as in Example 1.

  Therefore, from the results of the powder foundation using the composite powder of the present invention according to the formulation of Table 5, the content of α-tocopherol phosphate ester salt in the total amount of the powder foundation using the composite powder of the present invention is 0.01% by weight. It is understood that adhesion and adhesion are somewhat unsatisfactory when the amount is less than 5, and the base is slightly insufficient when it exceeds 5% by weight.

  Furthermore, when the α-tocopherol phosphate salt is blended directly into the foundation without being complexed, the state of occurrence of agglomeration or caking on the base surface relative to the content of the α-tocopherol phosphate salt is examined. Therefore, Comparative Examples 7 to 10 shown in Table 6 were prepared by the same production method as Comparative Example 5.

  In a state where the prepared Comparative Examples 7 to 10 were compression-molded in a metal pan, the samples were stored at −5 ° C., 5 ° C., 20 ° C., and 40 ° C., and a leak test was performed with a puff at room temperature every week. Changes in usability over time were evaluated. As a result, at the time point after 4 weeks, Comparative Example 7 showed no occurrence of aggregates or caking, whereas the content of α-tocopherol phosphate ester salt in the total amount of the foundation was 0.01% by weight or more. In Comparative Examples 8 to 10, in particular, those stored at a low temperature of −5 ° C. and 5 ° C. were likely to infiltrate moisture due to dew condensation or the like, and generation of aggregates and caking were observed. Therefore, when the α-tocopherol phosphate ester salt is blended directly into the foundation without being complexed, it is confirmed that aggregates and caking on the base surface occur when the content is 0.01% by weight or more. It was.

Face powder was prepared by the following production method and prescription.
[Production method]
Each powder of the components 1-10 of the following prescription is mixed and pulverized. Thereafter, the components 11 to 13 were mixed, added to the powder mixture obtained until pulverization, mixed, then pulverized again and passed through a sieve. This was filled in a container to obtain a face powder.
[Face powder formula]
Raw material name (wt%)
1 Composite powder of Example 3 4.00
2 Silicone-treated talc 69.53
3 Silicone-treated sericite 15.00
4 Silicone-treated titanium oxide 0.10
5 Silicone-treated bengara 0.05
6 Silicone-treated yellow iron oxide 0.06
7 Silicone-treated black iron oxide 0.01
8 Titanium mica 3.00
9 Spherical silica 5.00
10 Preservative 0.20
11 Squalane 1.00
12 Dimethylpolysiloxane 2.00
13 Fragrance 0.05

  Example 9 of the face powder obtained by the above formulation was a face powder having excellent adhesion to the skin and having no aggregates as in Example 7. Therefore, it is considered that this is the effect of the composite powder of Example 3 according to the present invention.

An eye shadow was prepared by the following production method and formulation.
[Production method]
Each powder of the components 1-7 of the following prescription was mixed and pulverized. Thereafter, components 8 to 10 were mixed, added to the mixture of powders until pulverization, mixed, and then pulverized again. Ingredient 11 was added to this, mixed and passed through a sieve. This was compression molded into a metal pan to obtain an eye shadow.
[Eyeshadow prescription]
Raw material name (wt%)
1 Composite powder of Example 2 5.00
2 Sericite 47.75
3 Gunjo 2.00
4 Alkyl polyacrylate 5.00
5 Boron nitride 5.00
6 Spherical silica 5.00
7 Preservative 0.20
8 Squalane 5.00
9 Methylphenylpolysiloxane 5.00
10 Fragrance 0.05
11 Mica titanium 20.00

  Example 10 of the eye shadow obtained by the above formulation was an eye shadow having excellent adhesion to the skin as in Example 7 and having no caking. Therefore, this is considered to be the effect of the composite powder of Example 2 according to the present invention.

Lipstick was prepared by the following production method and prescription.
[Production method]
Ingredients 8-10 of the following formulation are dispersed with a roller mill. Then, components 1-7 are heated and melted, and a mixture of components 8-10 and components 11-13 are added and mixed well. The product was filtered, poured into a mold at high temperature, cooled and molded into a container, and a lipstick was obtained.
[Lipstick prescription]
Raw material name (wt%)
1 Ceresin 10.00
2 Microcrystalline wax 2.00
3 Carnauba 1.00
4 Synthetic hydrocarbon wax 2.00
5 Isopropyl dimer acid 15.00
6 Tri (capryl / capric acid) glycerin 33.95
7 Dipentaerythritol fatty acid ester 3.50
8 Polyglyceryl triisostearate 12.00
9 Coloring 6.50
10 Composite powder of Example 4 1.00
11 Synthetic phlogopite 9.00
12 Spherical Silicic Acid 4.00
13 Fragrance 0.05

  Example 11 of the lipstick obtained by the above formulation was a lipstick with excellent adhesion to the lips. Moreover, there was no generation of agglomerates due to moisture absorption or moisture around the lips, and there was a smooth feeling of use with no roughness. Therefore, it is considered that this is the effect of the composite powder of Example 4 which is the present invention.

A water-in-oil emulsified foundation was prepared by the following production method and formulation.
[Production method]
Components 1 to 7 having the following formulation are mixed by heating, and the components 8 to 16 mixed uniformly are added and dispersed uniformly. Thereafter, the components 17 to 20 mixed with heating are added and emulsified. The obtained emulsion was poured into a container and cooled and solidified to obtain a water-in-oil emulsion foundation.
[Water-in-oil emulsified foundation formulation]
Raw material name (wt%)
1 Candelilla wax 4.00
2 Microcrystalline wax 3.00
3 Paraffin wax 7.00
4 Decamethylcyclopentasiloxane 26.00
5 Trimethylsiloxysilicic acid 10.00
6 Methylphenylpolysiloxane 1.00
7 (alkyl acrylate / dimethicone) copolymer 2.00
8 Silicone-treated titanium oxide 16.00
9 Silicone-treated yellow iron oxide 1.70
10 Silicone-treated Bengala 0.50
11 Silicone-treated black iron oxide 0.20
12 Alkyl polyacrylate 2.00
13 Nylon powder 2.00
14 Silicone-treated talc 2.50
15 Silicic anhydride 3.00
16 Composite powder of Example 3 4.00
17 Preservative 0.10
18 1,3-butylene glycol 3.00
19 Glycerin 3.00
20 Purified water 9.00

  Example 12 of the water-in-oil emulsified foundation obtained by the above formulation is a water-in-oil emulsified foundation having excellent adhesion to the skin and free of agglomerates as in Example 7. there were. Therefore, it is considered that this is the effect of the composite powder of Example 3 according to the present invention.

  As a moisturizing effect of the composite powder, the effect of suppressing moisture transpiration by the coating film of the powder foundation containing the composite powder was evaluated. The prescription of each powder foundation used was the composition of Prescription Examples 5 to 8 in Table 7 below, and the production method was in accordance with Example 7.

Evaluation of the suppression effect of water transpiration was performed as follows.
1. Each powder foundation is a No. of Advantech. It was uniformly applied to 131 filter papers with a puff and cut into 2 cm squares. Among these, a sample having a coating amount of 2.5 to 5.0 mg per 4 cm 2 was selected from the difference in weight before and after coating and used as a sample.
2. Using a microsyringe, 1 microliter of purified water was impregnated on the back of the coated surface of the sample prepared in 1 above, and the sample was left on the glass plate for 1 minute with the coated surface facing up.
3. The amount of water evaporated from the coated surface was calculated by the sealed cell method used for transepidermal water loss measurement (TEWL) shown below.
4). A sealed cell was placed on the sample prepared in 2 above, and constant dry air was circulated, and the water vapor pressure was detected using an evaporator (AS-TW2 model manufactured by Skinos). The water vapor pressure was detected on the chart paper, and the time point at which the water vapor pressure became constant (constant weight) was taken as the end point (FIG. 1, measured temperature 18-23 ° C., humidity 40-50%).
5. For the curve graph of the chart paper, the starting point was 2 minutes after the start of measurement, and the area to the end point was defined as the amount of transpiration. A value obtained by removing a constant amount of transpiration during this measurement time from this value was defined as transpiration amount T1. That is, the transpiration amount T1 is an area surrounded by a water vapor pressure curve graph, a time axis of 2 minutes, and a water vapor pressure axis at the end point. The area corresponding to the amount of transpiration T1 was estimated by copying the chart paper once with the same type of paper, cutting out the transpiration range, and measuring the weight (repeating the measurement five times to obtain the maximum value). 3 average values excluding 2 times showing the minimum value).
6). Furthermore, in order to estimate the effect of applying the powder foundation, the transpiration amount was corrected by subtracting the transpiration amount T0 of the powder foundation uncoated (filter paper only) obtained by the same method (transpiration amount T = T1-T0). ).
7). The suppression effect of moisture transpiration by the application of powder foundation is that a lot of water evaporates for a long time due to the presence of the coating film of the powder foundation. evaluated.
8). The evaluation of the water transpiration control effect by the composite powder blending was measured by replacing the 1 / T value of the powder foundation of each formulation example in Table 7 with only the core powder of the composite powder of each powder foundation. I asked for how many times the value.

  Table 8 shows the transpiration control effect of the composite powder blends of Formulation Examples 5 to 8 determined as described above.

  From the results of Table 8, it is clear that when the composite powder containing 2% by weight or more of α-tocopherol phosphate ester salt is contained in the powder foundation by 1% by weight or more, transpiration of water can be suppressed by the coating film of the powder foundation. It became. This suggests that the makeup cosmetic containing the composite powder of the present invention is a cosmetic that protects the moisture of the skin by the moisturizing effect of α-tocopherol phosphate ester salt.

  By blending the composite powder composed of the core powder of the present invention and α-tocopherol phosphate ester salt, it can be applied not only to cosmetics but also to products in other industries including pharmaceuticals, and improvement in quality can be expected.

It is explanatory drawing which illustrates the measurement result of the water vapor pressure in a sealed cell method, and calculates | requires transpiration | evaporation amount T1.

Claims (6)

A composite powder obtained by adhering, adsorbing, bonding or impregnating α-tocopherol phosphate ester salt to a nuclear powder , wherein the core powder is made of talc, mica, synthetic mica, kaolin, sericite, spherical nylon, or spherical cellulose. A composite powder for cosmetics, which is selected from one or more. The composite powder according to claim 1 , wherein the content of the α-tocopherol phosphate salt is 0.5 to 15% by weight . The composite powder according to claim 1, wherein the content of α-tocopherol phosphate is 2 to 10% by weight. A makeup cosmetic containing the composite powder according to any one of claims 1 to 3. The makeup cosmetic according to claim 4 , wherein the content of α-tocopherol phosphate salt in the total amount of the cosmetic is 0.01 to 5% by weight. The makeup cosmetic according to claim 4 or 5, wherein the dosage form is selected from solid powder cosmetics, powder cosmetics, oily cosmetics, and water-in-oil emulsified cosmetics.

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