JP7016718B2 - Powder cosmetics - Google Patents

Description

The present invention relates to a powdered cosmetic containing oblong-shaped polymer particles filled in a container having a specific cosmetic taking-out portion and a method for using the same.

For powdered cosmetics such as white powder and body powder, a method of picking them up directly from a container or taking cosmetics with a prop such as a sponge or a puff and applying them to the face or body is widely used. In powdered cosmetics, so-called loose powder, in order to improve usability, containers with holes, meshes, or other openings in the cosmetic take-out part are often used, for example, from containers with multiple holes at the tip. Containers have been devised, such as shaking out and using, or placing a mesh on the filled cosmetics and taking the cosmetics with props from above.
Such a container can prevent the scattering of the cosmetic and adjust the amount of use, and at the same time, the cosmetic can pass through the holes and the mesh to obtain softness and lightness in terms of usability. However, the powder is agglomerated due to the repeated pressing of the cosmetic every time it is used, which may cause problems such as the cosmetic solidifying and becoming difficult to remove. In cosmetics, a technique has been developed for obtaining a finely textured cosmetic film that has good peeling by continuous use and does not give a feeling of burden by containing a specific amount of organopolysiloxane cured product powder (for example, Patent Documents). 1). However, when the opening was made smaller in anticipation of further improvement in usability, it was not sufficient to solve the problem of removing cosmetics. In addition, although it was possible to suppress the scattering of the cosmetic when taking the cosmetic, it was not possible to suppress the scattering during use.

On the other hand, in powder cosmetics, many cosmetics containing polymer particles have been developed in order to obtain a light spread and spread and an effect of correcting unevenness on the skin, and various shapes of polymer particles are being studied. For example, a technique for powder cosmetics containing a large amount of spherical powder of an organopolysiloxane elastomer or polyurethane resin (for example, Patent Document 2) in which pores are inconspicuous, and hollow non-spherical resin particles having large irregularities are contained. Technology for cosmetics with excellent spreadability (for example, Patent Document 3), Technology for cosmetics containing spherical or elliptical plate-shaped powder-encapsulating composite particles and capable of covering the defects of recesses (for example, Patent Document 4). ) Etc. However, the shape of such polymer particles and the usability of powdered cosmetics from a container having an opening such as a hole or a mesh in the take-out portion have not been studied. Further, in powder cosmetics, spherical particles have high scattering properties, have dust during use, and other fine particles whose shape is controlled, for example, hollow and uneven fine particles, hemispherical fine particles, etc., are characteristic of each. However, since it does not selectively enter the concave parts such as pores on the skin and is present in a large amount in the skin hills, it has not been able to fully exert the effect of correcting unevenness and the effect of having excellent makeup. ..

Japanese Unexamined Patent Publication No. 11-49633 Japanese Unexamined Patent Publication No. 2014-80403 Japanese Unexamined Patent Publication No. 7-157672 Japanese Unexamined Patent Publication No. 2005-154649

An object of the present invention is to improve the usability of powdered cosmetics packed in a container having a specific cosmetics taking-out portion having a small aperture ratio, and to suppress the scattering of the powdered cosmetics. Furthermore, it is a provision of a cosmetic that has an effect of correcting unevenness and an excellent effect of making up, and a method of using the same.

In view of this situation, the present inventor has diligently studied and found that (a) the aspect (average major axis / average minor axis) ratio is 1.70 to 2.35, and the D10 of the major axis particle size distribution is 7.0 μm or more. , And contains oblong polymer particles with a D50 of 9.0 to 15.0 μm, a D90 of 22.0 μm or less, and an average major axis of 15.0 to 25.0 μm, with a specific open area ratio, or The powdered cosmetics stored in a container with a cosmetics outlet with a specific size opening are excellent in the goodness of the makeup and the non-scattering property, and the oblong-shaped polymer particles are on the skin. The present invention has been completed by finding that it acts selectively on the concave portions of the ellipsoid and exerts an effect of correcting unevenness and an excellent effect of long-lasting makeup.

That is, the present invention
(1) Component (a) Aspect (average major axis / average minor axis) ratio is 1.70 to 2.35, D10 of the major axis particle size distribution is 7.0 μm or more, and D50 is 9.0 to 15. A powder cosmetic containing 2 to 40% by mass of oblong polymer particles having an average major axis of 15.0 to 25.0 μm, having a D90 of 0 μm and a D90 of 22.0 μm or less, and having an area of 0.4 mm ² Powdered cosmetics contained in a container having one or more of the following openings and a cosmetic take-out portion having an opening area ratio of less than 60% (2) Ingredient (a) Aspect (average major axis / average minor axis) ratio The particle size distribution of the major axis is 1.70 to 2.35, D10 is 7.0 μm or more, D50 is 9.0 to 15.0 μm, D90 is 22.0 μm or less, and the average major axis is 15.0. Extraction of powder cosmetics containing 2 to 40% by mass of oblong polymer particles of up to 25.0 μm, having 1 or more and 5 or less openings per 1 cm ² and having an opening area ratio of less than 40%. Powdered cosmetics contained in a container having a portion (3) Powdered cosmetics in which the polymer particles are a polymer containing a (meth) acrylic acid ester monomer (4) Further components (b) Powder containing 25% by mass or more of talc. It is a cosmetic product, and (5) the component (a) aspect (average major axis / average minor axis) ratio is 1.70 to 2.35, the major axis particle size distribution D10 is 7.0 μm or more, and D50. A powder cosmetic containing 2 to 40% by mass of oblong polymer particles having an average major axis of 15.0 to 25.0 μm and a D90 of 22.0 μm or less and 9.0 to 15.0 μm. How to use powdered cosmetics contained in a container having one or more openings having an area of 0.4 mm ² or less and having a cosmetic taking-out portion having an opening area ratio of less than 60% (6) Ingredient (a) Aspect The (average major axis / average minor axis) ratio is 1.70 to 2.35, D10 of the major axis particle size distribution is 7.0 μm or more, D50 is 9.0 to 15.0 μm, and D90 is 22.0 μm. The following is a powder cosmetic containing 2 to 40% by mass of oblong polymer particles having an average major axis of 15.0 to 25.0 μm, and an opening having 1 or more and 5 or less openings per 1 cm ² . It provides a method of using powdered cosmetics stored in a container having a cosmetic taking-out portion having an area ratio of less than 40%.

When the powdered cosmetic of the present invention is filled in a container having a specific cosmetic taking-out portion having a small aperture ratio, it improves the ease of use of the cosmetic and does not scatter, and suppresses scattering. Furthermore, it exerts an effect of correcting unevenness and an excellent effect of making up.

The cosmetic take-out part and the appearance of the container used in the examples of the present application. Take-out part of the cosmetic used in the embodiment of the present application Enlarged view of the opening of the cosmetic take-out portion used in the examples of the present application and the comparative example.

Hereinafter, the present invention will be described in detail.

One aspect of the container in which the powdered cosmetics of the present invention is stored is a container having one or a plurality of openings having an area of 0.4 mm ² or less and having a cosmetic taking-out portion having an opening area ratio of less than 60%. .. The area of the opening is 0.4 mm ² or less, but may be 0.3 mm ² or less, 0.2 mm ² or less, and preferably 0.1 mm ² or more. The opening area ratio is less than 60%, but may be less than 50%, less than 40%, preferably 20% or more, and more preferably 25% or more. The makeup take-out part may be located on the top, bottom, left or right of the make-up storage part, or may have a plurality of make-up take-out parts. It is preferable that it is located on the upper side of the cosmetics storage part in consideration of standing still.
Another aspect of the container in which the powdered cosmetics of the present invention is stored is a container having a cosmetic taking-out portion having an opening area ratio of less than 40% and having 1 or more and 5 or less openings per 1 cm ² . The area of the opening is not particularly limited, but is 0.4 mm ² or less, but may be 0.3 mm ² or less, 0.2 mm ² or less, preferably 0.1 mm ² or more, and the opening area ratio is 40%. It is less than, preferably 20% or more, and more preferably 30% or more. The makeup take-out part may be located on the top, bottom, left or right of the make-up storage part, or may have a plurality of make-up take-out parts. It is preferable that it is located on the upper side of the cosmetics storage part in consideration of standing still.
The shape of the opening of the cosmetic take-out part is not particularly limited, and may be a round, square, or amorphous hole shape, or may be entirely or partially meshed, or a mixture of these. It doesn't matter if you do. The material of the take-out portion of the cosmetic is not particularly limited, and various materials such as polyester, acrylic resin, nylon, rayon, and polyurethane can be used. Further, the shape of the container is not particularly limited to a box shape, a cylinder shape, a dish shape, a spherical shape, a bag shape, and the like, and a wide variety of three-dimensional shapes can be applied.

The opening area ratio of the cosmetic take-out portion in the present invention is
Total area of opening part of container cosmetics take-out part / Total area of container take-out part (including non-opening part) x 100 = Opening area ratio (%)
It is represented by.

The polymer particles of the component (a) of the present invention have an aspect (average major axis / average minor axis) ratio of 1.7 to 2.35, a major axis particle size distribution of D10 of 7.0 μm or more, and D50 of 9. It is an ellipsoidal polymer particle having an average major axis of 15.0 to 25.0 μm, having a D90 of 22.0 μm or less and 0 to 15.0 μm. The oblong ellipsoid is a rotating body obtained with the long axis of the ellipse as the axis of rotation, and the component (a) is a projected two-dimensional diagram obtained by irradiating light from a direction orthogonal to the long axis direction of the particles. It is an ellipsoidal polymer particle having an aspect ratio = average major axis / average minor axis of 1.7 to 2.35 calculated from the major axis and the minor axis. The average major axis is in the range of 15.0 to 25.0 μm, and in this range, it selectively moves and fixes in the recesses of the skin when the cosmetic is applied, and after fixing, it is difficult to move and has dark shadows. Since the part is diffusely reflected, it has an excellent effect of making unevenness inconspicuous. If the major axis is smaller than that, it is easy to get on the skin hill, it is difficult to selectively fix it in the concave part, the diffusion of the cosmetic film becomes strong, and it may be easy to feel white and uncomfortable. There is a tendency to feel a foreign body.

The component (a) is not particularly limited as long as it is a polymer, and acrylic, methacrylic acid, styrene, nylon, silicone and the like can be used, but styrene-based monomers, (meth) acrylic acid ester-based monomers, and the like. At least one polymer selected from styrene-based sulfonates, styrene-based carboxylates, (meth) acrylic acid salts, (meth) acrylic acid ester-based carboxylates, and (meth) acrylic acid ester-based sulfonates. Particles consisting of are preferred. Further, a polymer of a (meth) acrylic acid ester-based monomer, particularly crosslinked polymethylmethacrylate powder, is most preferable in terms of polarity and adhesion to the skin. These powders can be obtained, for example, by the method described in JP-A-2009-235353.

Further, the oil absorption amount and water absorption amount of the polymer particles of the component (a) of the present invention are preferably 70 to 170 ml / 100 g, and it is easy to absorb sebum and sweat, and even if it is excessively absorbed, it diffuses light and darkens shadows. Since a certain part is maintained by diffuse reflection, it is possible to maintain the effect of making unevenness inconspicuous.

When the optical characteristics of the polymer particles of the component (a) of the present invention are evaluated, the optical reflection characteristics in the visible light region (1) 400 nm and (2) the reflection intensity ratio in the 700 nm region in the coating film having a thickness of one particle (1) 1) / (2) is 0.9 <reflection intensity ratio (1) / (2) <1.1 regardless of the incident angle and the light receiving angle, and has a characteristic of being white. This is a feature that cannot be obtained if the aspect ratio is smaller than the above description, and there is a tendency for the tint to differ depending on the angle. Further, when an oil agent or water having a refractive index of 1.37 to 1.52 is kneaded at a ratio of (a): (oil agent or water) = 1: 1 weight ratio, the component (a) particle single cell finely packed product. Since the color difference from and is ΔE = 15 or less, light is diffused even if it is excessively absorbed, and the dark and shaded portion is diffusely reflected, so that the effect of making unevenness inconspicuous can be maintained.

The content of the component (a) is preferably 0.1 to 20% by mass (hereinafter, abbreviated as%), more preferably 0.5 to 10%, and 1 to 5% in terms of the removal of cosmetics and the effect of correcting unevenness. Especially preferable.

The powdered cosmetic of the present invention may contain the component (b) talc, if necessary. The processing method such as shape, production area, washing / crushing method, etc. of the component (b) is not particularly limited, and when the average particle size is 0.5 to 25 μm, the effect of preventing the cosmetic from solidifying due to the pressing applied during use is achieved. Is easy to demonstrate. The talc of the component (b) may be subjected to surface treatment, and the surface treatment agent is not particularly limited to organic substances, inorganic substances and the like. The content of the component (b) is preferably 25 to 90% or more, more preferably 40 to 70% or more, and if it is in this range, it is preferable in terms of the removal of cosmetics.

The powdered cosmetic of the present invention can contain various powders in addition to the components (a) and (b). When the powder contains particles having an aspect ratio of 1.5 or less and an average particle size of 1 μm or more, the particles having an aspect ratio of 1.5 or less and an average particle size of 1 μm or more with the component (a). It is preferable that the mass ratio of the component (a) to the total mass of the component (a) is 0.3 or more. This range is preferable in terms of suppressing the scattering of powder during use.

In addition to the above components (a) and (b), the powder that can be contained in the present invention has a spherical shape, a plate shape, a needle shape, or the like as long as it is a powder usually used for cosmetics. , Inorganic powders, bright powders, organic powders, dye powders, etc., without particular limitation depending on the particle size such as fumes, fine particles, pigment grade, etc. , Metal powders, composite powders and the like. Specifically, kaolin, silk mica (serisite), white mica, gold mica, synthetic mica, synthetic fluorine gold mica, synthetic fluorine gold mica iron, red mica, black mica, fired talc, fired sericite, fired White mica, calcined gold mica, permiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, silica, zeolite, barium sulfate, calcined Calcium sulfate (baked sekko), calcium phosphate, fluoroapatite, hydroxyapatite, ceramic powder, for example, metal soaps such as zinc myristate, calcium palmitate, aluminum stearate, boron nitride, photochromic titanium oxide (sinterated iron oxide). Titanium dioxide), reduced zinc flower, silicone elastomer powder, silicone powder, silicone resin coated silicone elastomer powder, polymethylsilsesquioxane, acrylonitrile-methacrylic acid copolymer, vinylidene chloride-methacrylic acid copolymer, crosslinked silicone. Organic powder such as reticulated silicone block copolymer, polyamide resin powder (nylon powder), polyethylene powder, polystyrene powder, styrene and acrylic acid copolymer resin powder, benzoguanamine resin powder, polytetrafluorinated ethylene powder, cellulose powder, etc. Body, titanium dioxide, zinc oxide, red iron oxide, iron titanate, yellow iron oxide, ocher, black iron oxide, lower titanium oxide, mango violet, cobalt violet, chromium oxide, chromium hydroxide, cobalt titanate, ultramarine, dark blue Inorganic pigments such as bismuth oxychloride, fish scale foil, mica titanium, iron oxide coated mica titanium, lower order titanium oxide coated mica titanium, photochromic mica titanium, talc instead of mum as a substrate, glass, synthetic fluorine gold mica, Those using silica, bismuth oxychloride, etc., those coated with low-order titanium oxide, colored titanium oxide, iron oxide, alumina, silica, zirconia, zinc oxide, cobalt oxide, aluminum, etc. in addition to titanium oxide as a coating. As functional pearl pigments, the pearl pigment surface is coated with resin particles, the pearl pigment surface is coated with aluminum hydroxide particles, the pearl pigment surface is coated with zinc oxide particles, and the pearl pigment surface is coated with barium sulfate particles. Metal powder pigments such as aluminum powder and copper powder, red No. 201, red Organics such as 202, Red 204, Red 205, Red 220, Red 226, Red 228, Red 405, Orange 203, Orange 204, Yellow 205, Yellow 401, and Blue 404. Pigment, Red 3, Red 104, Red 106, Red 227, Red 230, Red 401, Red 505, Orange 205, Yellow 4, Yellow 5, Yellow 202, Yellow 203, Examples include organic pigments such as Green No. 3 and Blue No. 1, those treated with zirconium, barium, aluminum lake, etc., natural pigments such as cochineal, chlorophyll, β-carotene, etc., and one or more of these. Can be used. These powders include fluorine-based compounds, silicone-based compounds, metal soaps, lecithin, hydrogenated lecithin, collagen, hydrocarbons, higher fatty acids, higher alcohols, esters, waxes, waxes, surfactants, ceramides, sugar fatty acid esters, etc. Surface treatment may be performed using one kind or two or more kinds of fatty acids, fatty acid derivatives and the like.

In addition to the above-mentioned components, the powdered cosmetics of the present invention include powders other than the components (a) and (b), film-forming agents, and antioxidants that are generally used in cosmetics, as long as the effects of the present invention are not impaired. Agents, ultraviolet absorbers, water-soluble polymers, vitamins, beauty ingredients, moisturizers, alcohols, fragrances and the like can be appropriately contained.

The surfactant that can be contained in the powdered cosmetics of the present invention can obtain effects such as a powder dispersant, imparting adhesion to the skin, and improving makeup durability, and is usually used in cosmetics. Any surfactant may be used, and examples thereof include nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants.

Examples of the nonionic surfactant include glycerin fatty acid ester and its alkylene glycol adduct, polyglycerin fatty acid ester and its alkylene glycol adduct, propylene glycol fatty acid ester and its alkylene glycol adduct, sorbitan fatty acid ester and its alkylene glycol adduct. , Sorbitol fatty acid ester and its alkylene glycol adduct, polyalkylene glycol fatty acid ester, citrus fatty acid ester, polyoxyalkylene alkyl ether, glycerin alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene hydrogenated castor oil, alkylene of lanolin. Glycol adducts, polyoxyalkylene alkyl co-modified silicones, polyether-modified silicones and the like can be mentioned, and one or more of these can be used.

Examples of the anionic surfactant include inorganic and organic salts of fatty acids such as stearic acid and lauric acid, alkylbenzene sulfates, alkyl sulfonates, α-olefin sulfonates, dialkyl sulfosuccinates and α-sulfonated fatty acids. Salt, acylmethyl taurine salt, N-methyl-N-alkyl taurine salt, polyoxyethylene alkyl ether sulfate, polyoxyethylene alkyl phenyl ether sulfate, alkyl phosphate, polyoxyethylene alkyl ether phosphate, polyoxyethylene alkyl Examples thereof include phenyl ether phosphate, N-acyl amino acid salt, N-acyl-N-alkyl amino acid salt, ο-alkyl substituted malate, alkyl sulfosuccinate, etc., and one or more of these may be used. can.

Examples of the cationic surfactant include alkylamine salts, polyamine and alkanolamine fatty acid derivatives, alkyl quaternary ammonium salts, cyclic quaternary ammonium salts and the like, and one or more of these can be used. ..

As the amphoteric surfactant, there are amino acid type and betaine type carboxylic acid type, sulfate ester type, sulfonic acid type and phosphoric acid ester type, and those which are safe for the human body can be used. For example, N, N-dimethyl-N-alkyl-N-carboxymethyl ammonium betaine, N, N-dialkylaminoalkylene carboxylic acid, N, N, N-trialkyl-N-sulfoalkylene ammonium betaine, N, N- Examples thereof include dialkyl-N, N-bis (polyoxyethylene sulfate) ammonium betaine, 2-alkyl-1-hydroxyethyl-1-carboxymethylimidazolinium betaine, lecithin, hydrogenated lecithin, and the like. The above can be used.

The oil agent that can be contained in the powder cosmetic of the present invention is set according to the oil absorbency of the powder, and can obtain the effects of moisturizing / emollient effect, imparting luster, and imparting adhesiveness to the skin. The oil is not particularly limited as long as it is an oil that is usually used in cosmetics, but hydrocarbons, oils and fats, waxes, hydrogenated oils, ester oils, fatty acids, higher alcohols, fluorooils, and lanolin derivatives. , Oil agents such as silicone oils. Specifically, hydrocarbons such as liquid paraffin, squalane, vaseline, polyisobutylene, polybutene, paraffin wax, selecin wax, microcrystallin wax, mokurou, montan wax, fishertropus wax, olive oil, castor oil, jojoba oil, Oils and fats such as mink oil and macadamian nut oil, waxes such as beeswax, lanolin, carnauba wax, candelilla wax, gay wax, cetyl isooctanate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, trioctanoic acid. Glyceryl, diglyceryl diisostearate, diglyceryl triisostearate, glyceryl tribehenate, pentaerythrit ester loginate, dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl), hexa (hydroxystearic / stearic acid /) Logonic acid) Dipentaerythrityl, neopentyl glycol dioctanoate, cholesterol fatty acid ester, esters such as N-lauroyl-L-glutamate di (cholesteryl behenyl octyldodecyl), stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid , Fatty acids such as oleic acid, logonic acid, 12-hydroxystearic acid, higher alcohols such as stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, isostearyl alcohol, behenyl alcohol, perfluoropolyether, perfluorodecane, per Fluoro-based oils such as fluorooctane, lanolin derivatives such as lanolin, lanolin acetate, lanolin fatty acid isopropyl, and lanolin alcohol can be mentioned, and one or more of these can be used.
Specific examples of the silicone oils include a partially crosslinked organopolysiloxane polymer, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and hexa, which are described in JP-A-8-6035. Examples thereof include methyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, methyltrimethicone, caprylyltrimethicone, dimethylpolysiloxane, and methylphenylpolysiloxane, and one or more of these can be used. The content thereof is not particularly limited, but is preferably 1 to 30%, more preferably 2 to 20%, in terms of light spread of the powdered cosmetic and a light feel.

The powder cosmetics of the present invention are not particularly limited to foundations, eye shadows, blushers, white powders, body powders, antiperspirants, etc. It is easy to obtain the effect of unevenness correction, which is an effect. Further, the powdered cosmetic of the present invention is applied to both solid powder and powder (loose), but is more preferably used in powdered cosmetics.

The method of using the powdered cosmetic of the present invention is not particularly limited, such as a method of pressing the take-out portion of the cosmetic with a prop, a method of directly pressing it against the application site, a method of turning it upside down and taking it out to the prop or hand, a method of swinging it out, and the like. However, the method of directly pressing the take-out portion of the cosmetic with a prop, a hand, a face or a body is likely to exert the effect of the present invention.

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

Table 1 shows Examples 1 to 10 and Comparative Examples 1 to 6: powdery face powder.

※１：アスペクト比：2.0、D10：9.0μｍ、D50：12.0μｍ、D90：17.0μｍ、平均長径：19.0μｍ
※２：アスペクト比：2.2、D10：10.0μｍ、D50：16.0μｍ、D90：24.0μｍ、平均長径：25.0μｍ
※３：アスペクト比：2.4、D10：7.3μｍ、D50：11.6μｍ、D90：17.5μｍ、平均長径：19.7μｍ
※４：アスペクト比：10、平均長径：16μｍ
※５：マツモトマイクロスフェアＭ３１１（平均粒子径：5～20μｍ、松本油脂製薬社製）
※６：ＬＭＸ－５Ｃ （銀杏状：積水化成品工業社製）
※７：ケミスノーＭＲ－５Ｃ（平均粒子径：6μｍ、綜研化学社製）
※８：シリカマイクロビードＰ－１５０５（平均粒子径：10μｍ、日揮触媒化成社製）
※９：ＯＲＧＡＳＯＬ ２００２Ｄ（アスペクト比：1.5以下、平均粒子径：20μｍ、アトフィナ・ジャパン社製）
※１０：ＫＳＰ－１００（信越化学工業社製）
※１１：タルクＥＸ－１５（平均粒子径：15μｍ、ヤマグチマイカ社製）
※１２：タルクＪＡ－１３Ｒ（平均粒子径：5～8μｍ、浅田製粉社製）
※１３：ＰＤＭ－５Ｌ（平均粒子径：4.5～9μｍ、トピー工業社製）
※１４：ＭＺＹ－３０３Ｓ（テイカ社製）
※１５：ＸＺ－３００Ｆ－ＬＰ（堺化学社製）
※１６：水添リン脂質０．５％処理ＭＰ－１１３３（テイカ社製）

* 1: Aspect ratio: 2.0, D10: 9.0 μm, D50: 12.0 μm, D90: 17.0 μm, average major axis: 19.0 μm
* 2: Aspect ratio: 2.2, D10: 10.0 μm, D50: 16.0 μm, D90: 24.0 μm, average major axis: 25.0 μm
* 3: Aspect ratio: 2.4, D10: 7.3 μm, D50: 11.6 μm, D90: 17.5 μm, average major axis: 19.7 μm
* 4: Aspect ratio: 10, average major axis: 16 μm
* 5: Matsumoto Microsphere M311 (Average particle size: 5 to 20 μm, manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.)
* 6: LMX-5C (Ginkgo-shaped: manufactured by Sekisui Plastics Co., Ltd.)
* 7: Chemisnow MR-5C (average particle size: 6 μm, manufactured by Soken Chemical Co., Ltd.)
* 8: Silica microbead P-1505 (average particle size: 10 μm, manufactured by JGC Catalysts and Chemicals Co., Ltd.)
* 9: ORGASOL 2002D (aspect ratio: 1.5 or less, average particle size: 20 μm, manufactured by Atofina Japan)
* 10: KSP-100 (manufactured by Shin-Etsu Chemical Co., Ltd.)
* 11: Talc EX-15 (average particle size: 15 μm, manufactured by Yamaguchi Mica)
* 12: Talc JA-13R (average particle size: 5-8 μm, manufactured by Asada Flour Milling Co., Ltd.)
* 13: PDM-5L (average particle size: 4.5-9 μm, manufactured by Topy Industries, Ltd.)
* 14: MZY-303S (manufactured by TAYCA)
* 15: XZ-300F-LP (manufactured by Sakai Chemical Co., Ltd.)
* 16: Hydrogenated phospholipid 0.5% treatment MP-1133 (manufactured by TAYCA)

(Production method)
A. The components (1) to (22) are uniformly mixed and dispersed.
B. The components (23) to (25) are uniformly added to A and mixed.
C. B was pulverized and dispersed to obtain a powdery face powder.

(Evaluation methods)
The jar container is filled with the powdered face powders of Examples 1 to 10 and Comparative Examples 1 to 6, and has 675 openings / 1 cm ² having an area of 0.08 mm ² and an opening area ratio of 54.7%. We asked 20 cosmetics evaluation panels to use the sample with the cosmetics take-out part in the cosmetics puff, "good removal when starting cosmetics", "no scattering when using", "Makeup durability (sustainability of unevenness correction effect)" and "no feeling of dryness" were evaluated. Each panel was evaluated on a five-point scale according to the following evaluation criteria, a score was given to each sample, and the average score of all panel scores was judged according to the following criteria.
The appearance of the take-out part and the container of the cosmetic used for the evaluation is shown in FIG. 1, and the take-out part is shown in FIG.
In addition, "good removal when starting cosmetics" means that the amount of makeup when taking it out of the container is not too much or too little, and "no scattering when using" means that the amount of makeup when applying it. We evaluated whether there was any scattering. "For makeup persistence (sustaining unevenness correction effect), use a sample on one side of the face after applying the liquid foundation, and correct the left and right unevenness on one side immediately after and after 4 hours (daily life). We compared and evaluated the state of whether or not the condition was maintained.
Evaluation criteria:
(Score): (Evaluation result)
5 points: Very good
4 points: Good
3 points: Normal 2 points: Slightly defective 1 point: Defect judgment criteria:
(Judgment): (Average score)
◎: 4.5 or more ○: 3.5 or more and less than 4.5 △: 1.5 or more and less than 3.5 ×: less than 1.5

(result)
As is clear from the results in Table 1, the powdered face powders of Examples 1 to 10, which are the products of the present invention, have "good removal when starting cosmetics" and "no scattering when used". , "Makeup durability (sustaining unevenness correction effect)" and "no feeling of dryness" were all excellent powder cosmetics. In addition, the ones containing the polymer particles of the component (a) of Comparative Example 1 did not satisfy the quality in all the items, and the unevenness correction effect was observed immediately after the application but was not durable. In Comparative Example 2, which contains oblong polymer particles whose particle size distribution is deviated instead of the component (a), Comparative Example 3 and Comparative Example 4 whose aspect ratio is deviated, the unevenness correction effect immediately after coating is insufficient, and the unevenness is rather uneven. It was noticeable and did not meet the quality requirements. Further, when the polymer particles having different shapes and different sizes are contained in Comparative Example 5, since they are not oblong, they have low lateral rolling characteristics and are small in size, so that they are present in large numbers in the skin hills. The uniformity is impaired, and the effect of making the recesses inconspicuous is low from the beginning and tends not to last. Since there are voids inside, there is a tendency to feel dry. Comparative Example 6 has a ginkgo shape close to an oblong ellipsoidal shape, but the particle size is small, and like Comparative Example 5, the effect of making the recesses inconspicuous is low from the beginning, and the makeup persistence tends to be insufficient. be.

Confirmation test of removal at the time of starting cosmetics "Makeup" when the powdered face powders of Example 1 and Comparative Example 1 in Table 1 are used and the cosmetics taking-out portions 1 to 5 having openings shown in Table 2 below are used. Table 2 shows the evaluation of "goodness at the time of starting the charge" in the same manner as above, and the evaluation of whether or not the desired amount of use was obtained.

(result)
Use by passing through the take-out part of cosmetics having one or more openings with an area of 0.4 mm ² or less and an opening area ratio of less than 60%, or 5 cosmetics per 1 cm ² with an opening area ratio of less than 40%. When a container used by passing through the charge taking-out part was used, the sample of Example 1 showed an optimum amount to be taken, and the sample of Comparative Example 1 tended to be difficult to take.

Example 11: Powder foundation (ingredient) (%)
(1) Hydrogenated phospholipid-treated Bengala 1.0
(2) Hydrogenated phospholipid-treated iron yellow oxide 4.0
(3) Hydrogenated phospholipid-treated black iron oxide 0.5
(4) Hydrogenated phospholipid-treated titanium oxide 7.0
(5) Hydrogenated phospholipid-treated iron oxide / titanium oxide sintered body 8.0
(6) N-stearoyl-L glutamic acid 2Na-treated titanium oxide * 17 3.0
(7) Silicone-treated talc residue (8) Silicone-treated talc / potassium fluoride calcined product 5.0
(9) Boron Nitride 5.0
(10) Amino-modified silicone-treated mica * 18 5.0
(11) Hydrogenated phospholipid treatment Zinc oxide / titanium oxide coated mica 10.0
(12) Spherical methyl methacrylate crosspolymer * 19 5.0
(13) Ellipsoidal polymethyl methacrylate powder of the present invention * 1 5.0
(14) Spherical crosslinked silicone powder * 20 1.0
(15) Chlorphenesin 0.2
(16) Sodium dehydroacetate 0.2
(17) Didimethylpolysiloxane * 21 3.0
(18) 2-Ethylhexyl palmitate 2.0
(19) 2-Ethylhexyl paramethoxycinnamate 4.0
(20) Tri (capryl / capric acid) glyceryl 2.0
* 17: NAI treatment (manufactured by Miyoshi Kasei)
* 18: Mica Y-3000WA1 (manufactured by Yamaguchi Mica)
* 19: (Matsumoto Microsphere M305, manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.)
* 20: Trefil E-506S (manufactured by Toray Dow Corning)
* 21: (KF-96A (6cs), manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production method)
A. The components (1) to (14) are uniformly mixed and dispersed.
B. Ingredients (15) to (20) are uniformly added to A and mixed.
C. B was crushed and dispersed, filled in a container and compression-molded to obtain a powder foundation.
D. A cosmetic taking-out portion having the same aperture ratio as in Example 1 was mounted on the container C.

The powder foundation of the present invention has "good removal when starting cosmetics", "no scattering when used", "makeup durability (sustaining unevenness correction effect)", and "no dryness". It was an excellent foundation for all items.

Claims (3)

Component (a) Aspect (average major axis / average minor axis) ratio is 1.70 to 2.35, D10 of the major axis particle size distribution is 7.0 μm or more, D50 is 9.0 to 15.0 μm, and A powder cosmetic containing 2 to 40% by mass of oblong polymethylmethacrylate powder having a D90 of 22.0 μm or less and an average major axis of 15.0 to 25.0 μm, and having an area of 0.4 mm. Powdered cosmetics contained in a container having a cosmetic taking-out portion having one or more openings of ² or less and an opening area ratio of less than 60%. Component (a) Aspect (average major axis / average minor axis) ratio is 1.70 to 2.35, D10 of the major axis particle size distribution is 7.0 μm or more, D50 is 9.0 to 15.0 μm, and A powder cosmetic containing 2 to 40% by mass of oblong polymethylmethacrylate powder having a D90 of 22.0 μm or less and an average major axis of 15.0 to 25.0 μm, one per 1 cm ² . Powdered cosmetics contained in a container having a cosmetic taking-out portion having an opening area ratio of less than 40% and having 5 or less openings. The powdered cosmetic according to claim 1 or 2 , further comprising the component (b) talc in an amount of 25% by mass or more.

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