Solid powder cosmetics

Abstract

To provide solid powder cosmetics that have a high SPF effect and a good feel, and do not cause makeup fading.SOLUTION: Solid powder cosmetics contain (A) particulate titanium oxide-corn starch complex of 5-22 mass%, (B) calcium carbonate-hydroxy apatite composite powder of 3-10 mass%, and powder surface-treated with an oil solution.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a solid powder cosmetic that can be used as a cosmetic such as a powder foundation. [Background technology]

[0002] It is known that cosmetics with sunscreen effects contain fine particles of titanium dioxide to provide SPF effects. Patent Document 1 describes an invention relating to a composite particle comprising a base particle and a plurality of ultraviolet-shielding microparticles attached to the base particle, the base particle containing starch, and the ultraviolet-shielding microparticles containing at least one selected from titanium oxide, zinc oxide, and cerium oxide, and a cosmetic containing the composite particle (claims). The article describes that the composite particles can provide a smooth feel to the skin, and because they use starch, a biodegradable material, they are highly biodegradable, which means they can contribute to reducing microplastics, which have been identified as a cause of environmental pollution, and that they also have excellent UV blocking effects because the aggregation of UV-absorbing microparticles is suppressed by the base particles (paragraph 0008).

[0003] Patent Document 2 describes an invention (claims) that is a cosmetic containing at least one powder selected from spherical calcium carbonate, spherical calcium carbonate-apatite complexes, and silicone-treated spherical calcium carbonate-apatite complexes, in which the surface of the spherical calcium carbonate-apatite complex is coated with apatite. Examples include the inclusion of titanium dioxide. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-24789 [Patent Document 2] Japanese Patent Application Publication No. 8-12527 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention aims to provide a solid powder cosmetic that has a high SPF effect and spreads smoothly when applied and leaves a good finish. [Means for solving the problem]

[0006] The present invention relates to a method for producing a titanium dioxide-corn starch composite material comprising: (A) a fine particle titanium dioxide-corn starch composite material in an amount of 5 to 22 mass %; (B) a carbonated A solid powder cosmetic containing 3 to 10 mass % of calcium-hydroxyapatite composite powder and powder that has been surface-treated with an oil agent is provided. The present invention also provides a solid powder cosmetic containing (A) 5 to 22 mass% of a fine particle titanium dioxide-cornstarch complex, (B) 3 to 10 mass% of a calcium carbonate-hydroxyapatite complex powder, and (C) 1 to 10 mass% of a spherical cellulose powder, and a powder that has been surface-treated with an oil agent. The present invention also provides a solid powder cosmetic containing (A) 5 to 22 mass% of a fine particle titanium dioxide-cornstarch composite, (B) 3 to 10 mass% of a calcium carbonate-hydroxyapatite composite powder, and (D) 1 to 5 mass% of a spherical urethane powder and a powder that has been surface-treated with an oil agent. [Effects of the Invention]

[0007] The solid powder cosmetic of the present invention has a high SPF effect, feels good to the touch, and spreads smoothly when applied, resulting in a good finish. DETAILED DESCRIPTION OF THE INVENTION

[0008] (Solid powder cosmetic of the first embodiment) The solid powder cosmetic of the first embodiment contains a titanium dioxide-cornstarch composite particulate (A) component, a calcium carbonate-hydroxyapatite composite powder (B) component, and a powder surface-treated with an oil agent, and may contain other known cosmetic ingredients as needed.

[0009] The component (A), a fine particle titanium dioxide-cornstarch complex, is a combination of fine particle titanium dioxide and cornstarch. The fine particle titanium oxide-cornstarch composite of component (A) can be, for example, that described in JP 2021-24789 A.

[0010] The calcium carbonate-hydroxyapatite composite powder of component (B) is a powder in which calcium carbonate and hydroxyapatite are integrated. The calcium carbonate is preferably spherical calcium carbonate, in which the ratio of the minor axis to the major axis (minor axis / major axis) is close to 1.0 (for example, 0.9 to 1.1). The ratio of calcium carbonate to hydroxyapatite is preferably 9 to 50 parts by mass, more preferably 9 to 20 parts by mass, of hydroxyapatite per 100 parts by mass of calcium carbonate. The calcium carbonate-hydroxyapatite composite powder of component (B) may be surface-coated with silicone oil. The ratio of the calcium carbonate-hydroxyapatite composite to the silicone oil is preferably 0.1 to 50 parts by mass, more preferably 0.1 to 20 parts by mass, of silicone oil per 100 parts by mass of the calcium carbonate-hydroxyapatite composite. Examples of silicone oils include dimethylpolysiloxane, methylpolysiloxane, methylphenylpolysiloxane, decamethyltetracyclosiloxane, octamethyltrisiloxane, and various modified polysiloxanes. As the calcium carbonate-hydroxyapatite composite powder of component (B), the one described in Japanese Patent Application Laid-Open No. 8-12527 can be used.

[0011] The powder surface-treated with an oil agent is preferably an inorganic powder surface-treated with one or more oil agents selected from hydrogenated palm kernel oil, dipentaerythrityl hexanehydroxystearate, hydrogenated castor oil isostearate, and glyceryl tri(caprylate / caprate / myristicate / stearate), but does not include the calcium carbonate-hydroxyapatite composite powder of component (B) whose surface has been treated with silicone oil. The inorganic powder is preferably selected from the group consisting of talc, sericite, mica, titanium mica, and titanium oxide. The average particle size of the powder surface-treated with an oil agent is preferably equal to or smaller than the average particle sizes of components (A) and (B).

[0012] In the solid powder cosmetic of the first embodiment, The content of the component (A) is 5 to 22% by mass, preferably 5 to 20% by mass, and more preferably 7 to 20% by mass, The content of the component (B) is 3 to 10 mass %, preferably 3 to 8 mass %, and more preferably 4 to 7 mass %. The remainder is made up of powder surface-treated with an oil agent and cosmetic ingredients that may be contained as needed, totaling 100% by mass.

[0013] (Solid powder cosmetic of second embodiment) The solid powder cosmetic of the second embodiment contains, in addition to the components (A), (B), and the powder surface-treated with an oil agent of the solid powder cosmetic of the first embodiment, a spherical cellulose powder of component (C).

[0014] The spherical cellulose powder of component (C) can be cellulose or cellulose acetate. The component (C) preferably has an average particle size of 3 μm to 10 μm, and more preferably 4 μm to 8 μm. Component (C) is preferably spherical, and the term "spherical" means that the particle is approximately circular when viewed from any direction, and the minimum particle size is 80% or more, more preferably 90% or more, of the maximum particle size.

[0015] In the solid powder cosmetic of the second embodiment, The content of the component (A) is 5 to 22% by mass, preferably 5 to 20% by mass, and more preferably 7 to 20% by mass, The content of the (B) component is 3 to 10 mass%, preferably 3 to 8 mass%, and more preferably 4 to 7 mass%, The content of the component (C) is 1 to 10% by mass, preferably 1 to 8% by mass, and more preferably 1 to 5% by mass. The remainder is made up of powder surface-treated with an oil agent and cosmetic ingredients that may be contained as needed, totaling 100% by mass.

[0016] (Solid powder cosmetic of the third embodiment) The solid powder cosmetic of the third embodiment contains, in addition to the components (A), (B), and the powder surface-treated with an oil agent of the solid powder cosmetic of the second embodiment, a spherical urethane powder of component (D).

[0017] Examples of the spherical urethane powder of component (D) include (HDI / trimethylolhexyllactone) crosspolymer, (IPDI / poly(1,4-butanediol)-14) crosspolymer, and (HDI / PPG / polycaprolactone) crosspolymer, and one or more of these may be selected. The spherical urethane powder of component (D) is preferably truly spherical, and the term "true sphere" means that the powder exhibits an approximately perfect circle when projected and viewed from any direction, and the minimum particle size is at least 80%, more preferably at least 90%, of the maximum particle size. From the viewpoint of stability over time, it is preferable to use an HDI / trimethylolhexyl lactone crosspolymer as the spherical urethane powder of component (D). As component (D), products sold by Toshiki Pigment Co., Ltd. under the product names "D-400," "D-800," "CS-400," and the like can be used.

[0018] In the solid powder cosmetic of the third embodiment, The content of the component (A) is 5 to 22% by mass, preferably 5 to 20% by mass, and more preferably 7 to 20% by mass, The content of the (B) component is 3 to 10 mass%, preferably 3 to 8 mass%, and more preferably 4 to 7 mass%, The content of the component (D) is 1 to 5 mass %, preferably 2 to 5 mass %, and more preferably 2 to 4 mass %. The remainder is made up of powder surface-treated with an oil agent and cosmetic ingredients that may be contained as needed, totaling 100% by mass.

[0019] The solid powder cosmetic of the present invention (including the first to third embodiments) may contain known cosmetic ingredients within the scope that allows the effects of the invention to be obtained, but it is preferable that it contain an oil agent in order to improve the pressed compact. Hydrocarbons, squalane, liquid paraffin, petrolatum, alkyd, acrylic, sulfonamide resin, nitrocellulose; vegetable oils such as olive oil, almond oil, cocoa butter, macadamia nut oil, avocado oil, hydrogenated palm oil, castor oil, sunflower oil, jojoba seed oil, and evening primrose oil; synthetic triglycerides, wax, lanolin, lanolin acetate, higher fatty acids, higher fatty acid esters, higher alcohols, synthetic esters, linear and cyclic silicone oils, dimethylpolysiloxane, glycerin monostearate, decamethylcyclopentanesiloxane, polyoxyethylene-modified dimethylpolysiloxane, octamethylcyclotetrasiloxane, polyphenylmethylsiloxane, rosin pentaerythrityl ester, neopentyl glycol diisooctanoate, glycerin triisooctanoate, isopropyl myristate, propylene glycol monolaurate, tri(caprylic / capric)glyceryl, mineral oil, and other oils. Inorganic powders such as talc, mica, kaolin, synthetic fluorphlogopite, (fluoride / hydroxide / oxide) / (Mg / K / silicon), anhydrous silicic acid, hydrous silicic acid, alumina, aluminum hydroxide, zirconia, zinc oxide, cerium oxide, ultramarine, and Prussian blue, Lauroyl lysine, nylon-6, (HDI / trimethylol hexyllactone) crosspolymer, (HDI / PPG / polycaprolactone) crosspolymer, polymethyl methacrylate, polyalkyl acrylate, methyl methacrylate crosspolymer, (butyl acrylate / glycol dimethacrylate) crosspolymer, (methyl methacrylate / glycol dimethacrylate) crosspolymer, polymethylsilsesquioxane, (vinyl dimethicone / methicone silsesquioxane) crosspolymer, (diphenyl dimethicone / vinyl diphenyl dimethicone / silsesquioxane) crosspolymer, polysilicone-1 crosspolymer, polysilicone-22, organic powders such as metal soaps, Moisturizing agents such as glycerin, propylene glycol, sorbitol, polyethylene glycol, dipropylene glycol, 1,3-butylene glycol, diglycerin, ethylhexylglycerin, pentanediol, hexanediol, caprylyl glycol, mannitol, POE methylglycoside, biopolymers, and sucrose; Emollient ingredients such as mineral oil, petrolatum, paraffin wax, ceresin, polyethylene, hydrogenated polyisobutene, hydrogenated polydecene, synthetic wax, squalane, esters of higher fatty acids and higher alcohols, and oils and fats. Preservatives and disinfectants such as methylparaben, ethylparaben, phenoxyethanol, sodium dehydroacetate, and isopropylmethylphenol, surfactants such as esters of fatty acids and sucrose; Ascorbyl dipalmitate, magnesium ascorbyl phosphate and other salts, ascorbyl glucoside, tocopherol, tocopherol acetate, retinol palmitate, nicotinamide, biotin and other vitamins and their derivatives, amino acids and their derivatives, pH adjusters such as potassium hydroxide, sodium hydroxide, magnesium sulfate, triethanolamine, aminomethylpropanol, aminomethylpropanediol, citric acid, sodium citrate, lactic acid, and sodium lactate, UV absorbers such as ethylhexyl methoxycinnamate, t-butyl methoxydibenzoylmethane, ethylhexyl triazone, octocrylene, bisethylhexyloxyphenol methoxyphenyl triazine, antioxidants, fragrances, preservatives, chelating agents, antioxidants, colorants such as pigments.

[0020] The average particle size of the components contained in the solid powder cosmetic of the present invention can be determined by determining the particle size distribution using a laser diffraction particle size distribution analyzer SALD-2100 (Shimadzu Corporation), and the particle size at 50% cumulative volume can be used as the average particle size.

[0021] The solid powder cosmetic of the present invention (including the solid powder cosmetic of the first to third embodiments) preferably has an SPF of 12 or higher, more preferably 15 or higher, and even more preferably 18 or higher. [Example]

[0022] <Ingredients used> Component (A) Fine particle titanium dioxide-cornstarch composite: FTVO40-CS (Hayate Material Co., Ltd.) Average particle size 10μm (B) Component Calcium carbonate-hydroxyapatite composite powder: Apacal 10 (New Lime Co., Ltd.) average particle size 10 μm (C) Component Spherical cellulose powder: GE-800 (Toshiko Pigment Co., Ltd.), average particle size 6.0 μm (D) Component Spherical urethane powder: Product name "D-400", manufactured by Toshiki Pigment Co., Ltd. (average particle size 12-18 μm, specific gravity 1.1-1.2, bulk specific gravity 0.6, oil absorption 60 mL / 100 g, refractive index 1.5) (Oil-surface treated powder) Silicone-treated talc: TALC LS-61D (Toshoku Pigment Co., Ltd.) Silicone-treated sericite: Sericite WS-61D (Toshiko Pigment Co., Ltd.) Sericite treated with high-viscosity oil: DM-TSU Sericite W (Toshiko Pigment Co., Ltd.) Silicone-treated titanium mica: Super Mica ES-61D (Toshiko Pigment Co., Ltd.) Silicone-treated titanium dioxide: TiO2 AIS-61D (Toshiko Pigment Co., Ltd.) (Comparative ingredients) Cornstarch: Pharmacopoeial Cornstarch Yellow JPCS-YN (Japan Cornstarch Co., Ltd.) Fine particle titanium dioxide: Titanium MT-100TV (Teika Co., Ltd.) Spherical silica: Silica Microbead P-1500 (JGC Catalysts and Chemicals Co., Ltd.) (Other ingredients) Oil: silicone oil, ester oil, higher alcohol, mixed oil including vegetable oil Boron nitride: (SHP-3) Mizushima Ferroalloy Co., Ltd. Colorant: Iron oxide

[0023] Examples and Comparative Examples Components (A), (B), (C) or (D), colorant, powder surface-treated with oil, and boron nitride were mixed uniformly in a Henschel mixer, and then the mixture containing oil was added and mixed. The resulting mixture was pulverized using an atomizer, and then pressed into a metal plate. Each of the solid powder cosmetics obtained was evaluated for the following items, and the results are shown in Tables 1 and 2.

[0024] (1) Press formability Fill a metal plate and press it. Check the pressing condition. ○: Good formability ×: Poor moldability

[0025] (2) Usability (good stretchability) The usability (spreadability on the skin) of a cosmetic puff used without being wetted with water was evaluated according to the following criteria. ○: Very good spreadability △: Normal stretch ×: Poor spread

[0026] (3) Usability (Finish) Each cosmetic was applied to a part of the face. The applied surface was visually observed before and during application, and after application in a normal makeup application method, and evaluated according to the following criteria. ◯: When the cosmetic is spread, no or almost no stroke lines remain, and the finish can be easily and uniformly applied. △: When the cosmetic is spread, stroke lines remain, but if applied carefully, it can be applied evenly. ×: When the cosmetic was spread, stroke lines remained and the finish was not uniform.

[0027] (4) SPF Each cosmetic was measured using an analyzer and the predicted SPF value was calculated.

[0028] (5) Stability Each cosmetic was filled into a metal dish, molded, and subjected to temperature stability tests under five conditions: room temperature for 6 months, 40°C for 3 months, 50°C for 1 month, 0°C to 40°C / 12 hour cycle for 1 month, and 0°C for 1 month. Changes in appearance, odor, and usability were checked under all conditions and evaluated according to the following criteria. ○: No change in appearance, strange odor, or feeling of use under any of the five conditions. ×: Change in appearance, strange odor, feeling of use: Change in one or more of the five conditions.

[0029] [Table 1]

[0030] [Table 2]

[0031] Comparing Examples 1 to 5 in Table 1 with Comparative Examples 1, 5, 6 and 4 in Table 2, the effect of combining component (A) and component (B) was confirmed. The cosmetics of Examples 1 to 5 spread well when applied and left a good finish, and the makeup did not easily come off. The inclusion of component (C) can improve usability, and the use of a specified amount of component (D) improves press moldability and usability (finish). [Industrial Applicability]

[0032] The solid powder cosmetic of the present invention can be a powder makeup cosmetic including powder foundation, pressed powder, solid powder, blusher, powder eye shadow, powder eyebrow, and powder eyeliner.

Claims

1. A solid powder cosmetic comprising (A) 5 to 22 mass% of a fine particle titanium dioxide-cornstarch complex, (B) 3 to 10 mass% of a calcium carbonate-hydroxyapatite complex powder, and a powder surface-treated with an oil agent.

2. A solid powder cosmetic comprising (A) 5 to 22 mass% of a fine particle titanium dioxide-cornstarch complex, (B) 3 to 10 mass% of a calcium carbonate-hydroxyapatite complex powder, and (C) 1 to 10 mass% of a spherical cellulose powder, and a powder surface-treated with an oil agent.

3. A solid powder cosmetic comprising (A) 5 to 22 mass% of a fine particle titanium dioxide-cornstarch complex, (B) 3 to 10 mass% of a calcium carbonate-hydroxyapatite complex powder, and (D) 1 to 5 mass% of a spherical urethane powder, and a powder surface-treated with an oil agent.

4. The solid powder cosmetic according to any one of claims 1 to 3, wherein the powder surface-treated with an oil is one or more inorganic powders selected from the group consisting of silicone-treated talc, silicone-treated sericite, sericite treated with a high-viscosity oil, silicone-treated titanium mica, and silicone-treated titanium oxide.

5. The solid powder cosmetic according to any one of claims 1 to 4, having an SPF of 12 or more.

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