Cosmetic coated particles and cosmetic
Coated particles with plant leaf powder and ester compounds on inorganic or polysaccharide particles address the issue of insufficient softness and moist feeling in cosmetics, enhancing usability and hydrophobicity.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- SANYO CHEM IND LTD
- Filing Date
- 2025-11-18
- Publication Date
- 2026-05-28
AI Technical Summary
Existing coated particles for cosmetics do not provide sufficient softness and moist feeling, and there is a need for improved usability.
Coated particles with a coating layer containing leaf powder from specific plant genera and an ester compound formed by bonding monosaccharides and fatty acids, applied to inorganic or polysaccharide particles, enhancing hydrophobicity and usability.
The coated particles enhance the softness, smoothness, and moistness of the skin, providing improved cosmetic usability and hydrophobic properties.
Smart Images

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Abstract
Description
Coated Particles for Cosmetics and Cosmetics
[0001] The present invention relates to coated particles for cosmetics and cosmetics.
[0002] In order to impart a soft and moist feeling to the skin in cosmetics and to impart other effects (cosmetic effects, ultraviolet protection effects, etc.), various powder raw materials (synthetic resin beads derived from petroleum such as nylon and silicone and natural-derived powder raw materials, etc.) are used, and various improvements have been made to meet the needs of the market. For example, as a natural-derived powder raw material used for the purpose of improving the usability of cosmetics, cellulose acetate particles coated with a metal soap-based treatment agent and hydrophobized have been studied (Patent Document 1).
[0003] Japanese Patent Application Laid-Open No. 2022-99605
[0004] However, the softness and moist feeling of the skin imparted by the coated particles described in Patent Document 1 to cosmetics are not sufficient, and further improvement in the usability of cosmetics has been desired.
[0005] An object of the present invention is to provide coated particles for cosmetics that are excellent in usability and highly hydrophobic, and cosmetics that are excellent in usability.
[0006] As a result of intensive studies to solve these problems, the present inventors have reached the present invention. That is, the present invention is a coated particle for cosmetics having a coating layer having a powder of leaves of a plant belonging to at least one selected from the genus Camellia, genus Olea, genus Schima, genus Curcuma, genus Quercus, genus Momordica, genus Perilla, genus Ginkgo, genus Datura, genus Artemisia, genus Cycas, genus Morus and genus Liquidambar, and an ester compound (A), wherein the ester compound (A) is an ester compound of a sugar compound formed by bonding two or more monosaccharides and a fatty acid having 8 to 28 carbon atoms; a cosmetic containing the coated particles for cosmetics.
[0007] According to the present invention, it is possible to provide coated particles for cosmetics that are excellent in usability and highly hydrophobic, and cosmetics that are excellent in usability.
[0008] The present invention will now be described in detail. The coated particles for cosmetics of the present invention have a coating layer on at least a part of the surface of particle (B) comprising powder of the leaf of at least one plant selected from the genera Camellia, Olive, Diospyros, Curcuma, Quercus, Luffa, Lamiaceae, Ginkgo, Equisetum, Artemisia, Cycad, Mulberry, and Eucommia, and an ester compound (A), wherein the ester compound (A) is an ester compound of a sugar compound formed by the bonding of two or more monosaccharides and a fatty acid having 8 to 28 carbon atoms. In this specification, chemical products may be described by their display name or alternative display name as listed in the "List of Cosmetic Ingredient Display Names" prepared by the Japan Cosmetic Industry Association.
[0009] <Particles (B)> From the viewpoint of feel as a cosmetic raw material, particles (B) are preferably inorganic particles (B1) or polysaccharide particles (B2). Inorganic particles (B1) can be any particles that can be used as a cosmetic raw material, such as silica particles, talc particles, mica particles, sericite particles, titanium dioxide particles, calcium carbonate particles, barium sulfate particles, boron nitride particles, magnesium oxide particles, smectite particles, montmorillonite particles, bentonite particles, and kaolin particles. Of these, silica particles are preferred from the viewpoint of feel as a cosmetic raw material. Polysaccharide particles (B2) can be any particles that can be used as a cosmetic raw material, such as cellulose particles, starch particles, and agar particles. Of these, cellulose particles are preferred from the viewpoint of feel as a cosmetic raw material. Particles (B) may be used alone or two or more may be used in combination.
[0010] The number-average particle diameter of particle (B) is preferably 0.01 to 1000 μm, more preferably 0.01 to 100 μm, even more preferably 1 to 10 μm, and particularly preferably 5 to 10 μm. As a method for measuring the number-average particle diameter of particle (B), particle (B) is subjected to sputtering treatment as necessary, and then observed with a transmission electron microscope [product name: JEM-2100, manufactured by JEOL Ltd.] at an acceleration voltage of 80 kV and an observation magnification of 50,000 times. 100 primary particles are randomly selected from the image, and the average of the major and minor axes of each particle is taken as the particle diameter of each particle. The number average of the obtained 100 particle diameters is calculated and taken as the number-average particle diameter of particle (B).
[0011] <Cellulose Particles> Cellulose particles, which are polysaccharide particles (B2), include crystalline cellulose particles, amorphous cellulose, cellulose ester particles in which some or all of the hydroxyl groups of cellulose are esterified (cellulose acetate particles, cellulose propionate particles, cellulose butyrate particles, cellulose acetate particles, cellulose sulfate particles, nitrocellulose particles, and cellulose phosphate particles, etc.), and cellulose ether particles in which some or all of the hydroxyl groups of cellulose are etherified (methylcellulose particles, ethylcellulose particles, and carboxymethylcellulose particles, etc.).
[0012] Cellulose particles may be hollow particles, porous particles, or solid particles. Furthermore, there are no restrictions on the shape of the cellulose particles; spherical particles, rugby ball-shaped particles, columnar particles, plate-shaped particles, short fibrous particles, and amorphous particles can be used.
[0013] The number-average particle size of the cellulose particles is preferably 0.01 to 100 μm, more preferably 0.1 to 30 μm, even more preferably 1 to 10 μm, and particularly preferably 5 to 10 μm, from the viewpoint of the feel of the cosmetic containing the coated particles for the cosmetic.
[0014] As the cellulose particles, cellulose particles obtained from the market may be used. Examples of cellulose particles available from the market include CELLULOBEADS D-5 (registered trademark, cellulose particles with an average particle size of 5 μm, manufactured by Daito Chemical Industries, Ltd.), CELLULOBEADS D-10 (registered trademark, cellulose particles with an average particle size of 10 μm, manufactured by Daito Chemical Industries, Ltd.), CELLULOBEADS USF-X (registered trademark, cellulose particles with an average particle size of 3 to 5 μm, manufactured by Daito Chemical Industries, Ltd.), CELLULOBEADS D-30 (registered trademark, cellulose particles with an average particle size of 30 μm, manufactured by Daito Chemical Industries, Ltd.), SILK COTTON PW (registered trademark, cellulose particles, manufactured by Daito Chemical Industries, Ltd.), and SIRNOS 190 (registered trademark, average particle size of 9 μm, manufactured by ABC Nanotech).
[0015] <Silica Particles> As for silica particles (B1), the silica particles are silica (anhydrous silicic acid) used in the field of cosmetics, with a number-average particle diameter of 2 to 20 μm and a BET specific surface area of 10 to 100 m². 2 A weight of / g is preferable.
[0016] Such silica particles may be manufactured by known methods or commercially available products may be used. Examples of commercially available silica particles that can be used in the present invention include Sunsphere NP-30 (silica particles with a number average particle diameter of 4 μm, manufactured by AGC SI-TEC Co., Ltd.), Sunsphere NP-100 (silica particles with a number average particle diameter of 10 μm, manufactured by AGC SI-TEC Co., Ltd.), and Sunsphere NP-200 (silica particles with a number average particle diameter of 20 μm, manufactured by AGC SI-TEC Co., Ltd.).
[0017] The coated particles for cosmetics of the present invention have a coating layer on at least a portion of the surface of the particle (B). The coating layer contains powder of the leaves of at least one plant selected from the genera Camellia, Olive, Diospyros, Curcuma, Quercus, Luffa, Lamiaceae, Ginkgo, Equisetum, Artemisia, Cycad, Mulberry, and Eucommia, and an ester compound (A). Coating means a state in which a layer made of another substance is attached to the surface of the object to be coated, and the surface of the object to be coated and the layer made of the other substance may be physically attached or may be chemically bonded and integrated. The layer made of the other substance is called the coating layer. The coating layer may be one layer or two or more layers. If the coating layer is one layer, the coating layer contains a mixture of leaf powder and ester compound (A). If the coating layer consists of two or more layers, the leaf powder and the ester compound (A) may each be contained in one of the layers. For example, there may be one or more layers of leaf powder and one or more layers of ester compound (A), or there may be two or more layers containing a mixture of leaf powder and ester compound (A). It is preferable that the coating layer consists of two or more layers. If the coating layer consists of two or more layers, it is preferable that the layer containing ester compound (A) is the outermost layer of the coating layer.
[0018] <Powder of the leaves of at least one plant selected from the genera Camellia, Olive, Diospyros, Curcuma, Quercus, Luffa, Lamiaceae, Ginkgo, Equisetum, Artemisia, Cycad, Mulberry, and Eucommia> "Leaves" refers to the leaf portion of a plant, but may also include the stem. Leaf powder is obtained by drying and grinding the leaves (or leaves and stems) of any plant used as raw material. Before grinding, processing such as heating, steaming, or hand-rubbing may be performed. The order of these processing and leaf drying may be selected as appropriate.
[0019] The types of plants belonging to the genus Camellia are not particularly limited, and examples include the tea plant (Camellia sinensis), Camellia taliensis, Camellia irrawadiensis, Camellia japonica, and Camellia sasanqua. The drying method for the leaves of plants belonging to the genus Camellia is not particularly limited and may include natural drying, heat drying, and freeze-drying. If the plant belonging to the genus Camellia is the tea plant (Camellia sinensis), any drying method used in tea production can be applied. For example, this includes any drying method used in the production of sencha (including rough rolling, kneading, intermediate rolling, and fine rolling), the production of pan-fried tea (including kneading, water drying, and deep frying), and the production of white tea, oolong tea (baozhong tea, etc.), and black tea (including withering). The type of dried leaves is not particularly limited and may include, for example, unfermented tea, lightly fermented tea, semi-fermented tea, fermented tea, and post-fermented tea leaves. Examples of unfermented tea include green tea (sencha, gyokuro, kabusecha, bancha, gyokuryokucha, tencha, matcha, hojicha, etc.). Examples of lightly fermented tea include Baihao Yinzhen and Bai Mudan. Examples of semi-fermented tea include Baozhong tea and oolong tea. Examples of fermented tea include black tea. Examples of post-fermented tea include Pu-erh tea.
[0020] The types of plants belonging to the genus Olea are not particularly limited; for example, olive (Olea europaea) can be mentioned. The types of plants belonging to the genus Diospyros are not particularly limited; for example, persimmon (Diospyros kaki), lotus (date plum, Diospyros lotus), American persimmon (Diospyros virginiana) can be mentioned. The types of plants belonging to the genus Curcuma are not particularly limited; for example, turmeric (Curcuma longa), mango ginger (Curcuma amada) can be mentioned. The types of plants belonging to the genus Quercus are not particularly limited; for example, sawtooth oak (Quercus acutissima Carr.), Japanese oak (Quercus serrata), and Mongolian oak (Quercus crispula) can be mentioned. The types of plants belonging to the genus Luffa are not particularly limited; for example, loofah (Luffa aegyptiaca) can be mentioned. The types of plants belonging to the genus Perilla are not particularly limited; for example, perilla (Perilla frutescens var. crispa) and egoma (Perilla frutescens) can be mentioned. The types of plants belonging to the genus Ginkgo are not particularly limited; for example, ginkgo (Ginkgo biloba) can be mentioned. The types of plants belonging to the genus Equisetum are not particularly limited; for example, horsetail (Equisetum arvense), horsetail (Equisetum hyemale), and water horsetail (Equisetum fluviatile) can be mentioned. The types of plants belonging to the genus Artemisia are not particularly limited; for example, Artemisia princeps and Artemisia dracunculus are examples. The types of plants belonging to the genus Cycad are not particularly limited; for example, Cycas revoluta is an example. The types of plants belonging to the genus Morus are not particularly limited; for example, Morus alba, Morus australis Poir., Morus australis Poir., and Morus erythrosora are examples. The types of plants belonging to the genus Eucommia are not particularly limited; for example, Eucommia ulmoides is an example.The method for drying the leaves of these plants is not particularly limited; natural drying, heat drying, freeze-drying, etc., can be selected as appropriate.
[0021] The method for grinding the dried leaves (or leaves and stems) is not particularly limited, and any method commonly used by those skilled in the art may be used. The grinding process may include only a coarse grinding step, only a fine grinding step, or both a coarse grinding step and a fine grinding step. From the viewpoint of improving grinding efficiency, such as uniform particle size and reduced grinding time, a process including both a coarse grinding step and a fine grinding step is preferred.
[0022] In the coarse grinding process, the leaves are crushed using any coarse grinding equipment or tools commonly used by those skilled in the art, such as cutters, slicers, and dicers, so that, for example, the longest diameter of the leaves is about 20 mm or less, preferably about 0.1 to 10 mm. In the fine grinding process, the leaves are finely ground using any fine grinding equipment or tools commonly used by those skilled in the art, such as crushers, mills, blenders, stone mills, and mortars. By appropriately setting the conditions of the grinding process, the physical properties of the powder, such as particle size distribution, can be adjusted.
[0023] The leaf powder may be sieved if necessary; for example, any material that passes through a sieve with a mesh size of 100 to 150 can be used as leaf powder.
[0024] <Ester Compound (A)> Ester compound (A) is an ester compound of a sugar compound formed by the bonding of two or more monosaccharides and a fatty acid having 8 to 28 carbon atoms. The monosaccharides that form the sugar compound are not particularly limited, but preferred monosaccharides include glucose, fructose, galactose, etc. Sugar compounds formed by the bonding of two or more monosaccharides include disaccharides, trisaccharides, tetrasaccharides, and polysaccharides formed by the bonding of five or more monosaccharides. Examples of disaccharides include sucrose, maltose, lactose, cellobiose, trehalose, and lactulose. Examples of trisaccharides include nigerotriose, maltotriose, melegitose, maltotriulose, raffinose, and kestose. Examples of tetrasaccharides include nystose, nigerotetraose, and stachyose. Examples of polysaccharides include dextrin, α-cyclodextrin, β-cyclodextrin, γ-cyclodextrin, inulin, pullulan, starch, cellulose, chitin, and glucomannan. Among sugar compounds formed by the bonding of two or more monosaccharides, from the viewpoint of cosmetic stability, sugar compounds formed by the bonding of two or more glucose and / or fructose molecules are preferred, with sucrose, dextrin, inulin, pullulan, and cellulose being more preferred, and dextrin and inulin being particularly preferred.
[0025] Preferred fatty acids having 8 to 28 carbon atoms include straight-chain saturated fatty acids, branched saturated fatty acids, straight-chain unsaturated fatty acids, and branched unsaturated fatty acids. Examples of straight-chain saturated fatty acids having 8 to 28 carbon atoms include octanoic acid, dodecanoic acid (lauric acid), tetradecanoic acid (myristic acid), pentadecanoic acid, hexadecanoic acid (palmitic acid), heptadecanoic acid, octadecanoic acid (stearic acid), eicosanoic acid, docosanic acid (behenic acid), and octacosanoic acid. Examples of branched saturated fatty acids having 8 to 28 carbon atoms include 2-ethylhexanoic acid, 11-methyldodecanoic acid, 2-hexyldecanoic acid, 2-octadecanoic acid, isostearic acid, and 16-methylheptadecanoic acid. Examples of linear unsaturated fatty acids having 8 to 28 carbon atoms include 9-hexadecenoic acid, 11-octadecenoic acid, oleic acid, 9,11,13-octadecatrienoic acid, and 5,8,11,14-eicosatetraenoic acid (arachidonic acid). Examples of branched unsaturated fatty acids having 8 to 28 carbon atoms include isomylistoleic acid, isoleic acid, 2-methyl-9-octadecenoic acid, and 2-methyl-2eicosenoic acid. From the viewpoint of cosmetic stability, linear saturated fatty acids having 8 to 28 carbon atoms and branched saturated fatty acids having 8 to 28 carbon atoms are more preferred, and linear saturated fatty acids having 8 to 22 carbon atoms and branched saturated fatty acids having 8 to 22 carbon atoms are particularly preferred.
[0026] As an ester compound (A) of a sugar compound formed by the bonding of two or more monosaccharides and a fatty acid having 8 to 28 carbon atoms, specifically, palmitate dextrin, stearate dextrin, myristic acid dextrin, laurate dextrin, arachidonic acid dextrin, behenate dextrin, pentadecanoate dextrin, heptadecanoate dextrin, (palmitic acid / stearic acid) dextrin, (behenic acid / myristic acid / pentadecanoic acid) dextrin, (palmitic acid / 2-ethylhexanoic acid) dextrin, Examples include (palmitic acid / isostearate) dextrin, (lauric acid / oleic acid) dextrin, (behenic acid / acetic acid) dextrin, (palmitic acid / hexyldecanoic acid) dextrin, (palmitic acid / isostearate / 2-ethylhexanoic acid / oleic acid / valeric acid / acetic acid) dextrin, inulin stearate, inulin palmitate, inulin laurate, (palmitic acid / 2-hexyldecanoic acid) dextrin, and (palmitic acid / 2-hexyldecanoic acid / isostearate) dextrin.
[0027] Of these, from the viewpoint of the feel of the coated particles for cosmetics (softness of texture, smoothness, and moistness), the ester compound (A) is preferably dextrin palmitate, dextrin stearate, dextrin myristate, (palmitic acid / stearic acid) dextrin, (behenic acid / myristic acid / pentadecanoic acid) dextrin, (palmitic acid / 2-ethylhexanoic acid) dextrin, (palmitic acid / hexyldecanoic acid) dextrin, (lauric acid / oleic acid) dextrin, (palmitic acid / hexyldecanoic acid) dextrin, and inulin stearate, and more preferably dextrin palmitate, dextrin myristate, (palmitic acid / hexyldecanoic acid) dextrin, (palmitic acid / 2-ethylhexanoic acid) dextrin, and inulin stearate. Ester compound (A) may be used alone or in combination of two or more types.
[0028] As the ester compound (A), a compound obtained by esterifying a sugar compound and a fatty acid using a known method (for example, the method described in Japanese Patent Publication No. 6869942, etc.) may be used, or an ester compound obtained from the market may be used.
[0029] <Coated Particles for Cosmetics> The content of the leaf powder in the coating layer is preferably 0.01 to 10% by weight, and more preferably 0.5 to 7% by weight, based on the weight of particle (B). When the content of the leaf powder is within the above numerical range, the feel of the coated particles for cosmetics tends to improve (softness, smoothness, and moistness of the skin).
[0030] The content of the ester compound (A) in the coating layer is preferably 0.01 to 10% by weight, and more preferably 0.1 to 3% by weight, based on the weight of the particles (B). When the content of the ester compound (A) is within the above numerical range, the feel of the coated particles for cosmetics (softness, smoothness, and moistness) tends to improve.
[0031] The weight ratio of the leaf powder to the ester compound (A) is preferably 0.01:1 to 100:1, and more preferably 0.1:1 to 50:1.
[0032] The content of the ester compound (A) in the coated particles for cosmetics of the present invention can be calculated from the mixing ratio of each raw material when the coated particles for cosmetics are manufactured. Alternatively, by using an X-ray photoelectron spectrometer (XPS) (such as the ESCA-5400 manufactured by ULVAC-FI), the number of photoelectrons can be measured in the bond energy range of 100 to 1500 eV, and the peak area value in the range of 275 to 290 eV derived from C can be determined. By referring to the carbon bond quantitative values of each component of the disclosed coated particles for cosmetics, the content of the ester compound (A) can be calculated from the peak area value.
[0033] The BET specific surface area of coated particles for cosmetics should be between 0.1 and 60 m², considering the design flexibility of cosmetic formulations and the feel of the cosmetic product. 2 It is preferably 0.2 to 60 m / g. 2 It is more preferable that the amount is 0.5 to 40 m / g. 2It is even more preferable that it be / g.
[0034] The above BET specific surface area was determined using the fully automatic BET specific surface area measuring device "Macorb® HM model-1201" (manufactured by Mountec Co., Ltd.) in accordance with JIS Z 8830:2013, by the carrier gas method using nitrogen gas as the adsorbate.
[0035] <Method for Manufacturing Coated Particles for Cosmetics> The coated particles for cosmetics of the present invention can be manufactured by mixing particles (B), leaf powder, and an ester compound (A). The manufacturing method can be a dry method in which coating is performed without using a solvent, or a wet method in which the particles (B) are coated using leaf powder and ester compound (A) dispersed or dissolved in a solvent. From the viewpoint of environmental considerations and the freedom of the concentration and type of coating agent, the dry method is preferred.
[0036] A dry method for producing coated particles for cosmetics involves mixing particles (B), leaf powder, and ester compound (A) without using a solvent, using a stirrer (mill mixer, pencil mixer, planetary mixer, disper mixer, homo mixer, intensive mixer, ribbon blender, jet mill, ball mill, kneader, extruder, mortar and pestle, etc.), pulverizer, mixer, disperser, etc., to coat the particles (B) with the leaf powder and ester compound (A). There are no particular restrictions on the order of mixing; the particles (B), leaf powder, and ester compound (A) may be added and mixed simultaneously, or the particles (B) and leaf powder may be mixed first, and then the ester compound (A) may be added and mixed. It is preferable to add and mix the ester compound (A) after mixing the particles (B) and leaf powder, as this improves the surface hydrophobicity of the coated particles for cosmetics when the layer containing the ester compound (A) is formed as the outermost layer of the coating. In the dry method, the coating process may be carried out while applying energy such as heat, ultraviolet light, lasers, and electromagnetic waves.
[0037] In the dry method, the mixing time can be adjusted according to the machine used and the processing volume, and it is preferable to mix until the surface of the cosmetic-coated particles exhibits hydrophobicity. Specifically, it is preferable to mix until the "degree of surface hydrophobicity of coated particles (%)" measured by the following method is 90% or higher. The following measurement utilizes the phenomenon that when the degree of surface hydrophobicity is high, even when coated particles are mixed with water, the number of coated particles that float on the water surface without dispersing in the water increases. 0.1 g of coated particles are placed in a 30 mL beaker containing 24.9 g of purified water, and stirred for 30 minutes using a magnetic stirrer. Then, using a syringe (capacity 5 mL), 1 to 2 mL of coated particles dispersed in the purified water, avoiding the particles on the water surface, are collected together with the purified water as a coated particle dispersion. The weight of the collected coated particle dispersion and the dry weight after drying the entire collected coated particle dispersion at 105°C for 1 hour using a forward-wind dryer are measured. The measured weights are substituted into the following formula to determine the "degree of surface hydrophobicity of coated particles (%)". Degree of surface hydrophobicity of coated particles (%) = [1 - {(25 × dry weight of recovered coated particle dispersion (g)) / (weight of recovered coated particle dispersion (g)) / 0.1}] × 100
[0038] Furthermore, the mixing temperature in the dry method is preferably between 0°C and 50°C.
[0039] One method for producing coated particles for cosmetics by a wet method is to coat particles (B) with leaf powder and ester compound (A) by mixing particles (B) with leaf powder and ester compound (A) dissolved or dispersed in a solvent (water and / or organic solvent). In the wet method, organic solvents are preferred, with ester oils and hydrocarbon oils being preferred, and monoesters of lauric acid and 1-hexanol, decane, dodecane, isododecane, and squalane being particularly preferred. The amount of solvent is preferably 40% by weight or more relative to the weight of particles (B). The total weight ratio of leaf powder and ester compound (A) to the solvent is preferably 0.1 to 20% by weight, and more preferably 1 to 5% by weight. The weight ratio of the processed solution obtained by dissolving or dispersing leaf powder and ester compound (A) in the solvent to particles (B) is preferably 30:70 to 99:1. The apparatus used in the wet method is not particularly limited as long as it is capable of stirring and heating.
[0040] In the wet process, it is preferable to have a step to remove the solvent. Methods for removing the solvent include vaporizing the solvent from the mixture of particles (B), leaf powder, ester compound (A), and solvent by heating and / or reducing the pressure and then distilling it off, and extracting and removing the solvent from the mixture. Methods for extracting and removing the solvent from the mixture include mixing the mixture with other organic solvents other than the solvent contained in the mixture [ether-based solvents (diethyl ether, tetrahydrofuran, etc.), and hydrocarbon-based solvents (toluene, hexane, etc.)] and extracting the solvent contained in the mixture with the other organic solvent.
[0041] As solvents in the wet method, ester oils, hydrocarbon oils, fatty acid oils, aliphatic alcohol oils, silicone oils, etc. can be mentioned. These are also used as components of cosmetics and are less likely to irritate the skin even if they remain on the coated particles for cosmetics. As the ester oil, ester oils known as raw materials for cosmetics can be used, and the liquid fats and oils and synthetic ester oils described in JP-A-2020-26432 can be used. Triesters of caprylic acid and capric acid with glycerin, diesters of caprylic acid and capric acid with propanediol, and monoesters of lauric acid and 1-hexanol can be preferably used. As the hydrocarbon oil, hydrocarbon oils known as raw materials for cosmetics can be used, and hydrocarbon oils such as squalane described in JP-A-2020-26432 can be used. As the fatty acid oil, fatty acid oils known as raw materials for cosmetics can be used, and saturated fatty acids having 9 or less carbon atoms can be preferably used. As the aliphatic alcohol oil, aliphatic alcohol oils known as raw materials for cosmetics can be used, and saturated aliphatic alcohols having 11 or less carbon atoms can be preferably used. As the silicone oil, silicone oils known as raw materials for cosmetics can be used, and silicone oils such as those described in JP-A-2020-26432 can be used.
[0042] The solvent remaining on the coated particles for cosmetics obtained by the wet method is preferably 20% by weight or less, more preferably 5% by weight or less, based on the weight of the coated particles for cosmetics. The weight of the solvent remaining on the coated particles for cosmetics is obtained by stirring and mixing the coated particles for cosmetics with methanol or hexane of the same weight as the coated particles for cosmetics at 25 °C for 30 minutes, filtering off the solid part, and calculating the ratio of the evaporation residue of the filtrate to the dry weight of the solid part.
[0043] <Cosmetics> The cosmetics of the present invention contain coated particles for cosmetics. Since the cosmetics of the present invention contain the coated particles for cosmetics of the present invention, they have stability (water resistance) and are excellent in the feeling of use (high moisturizing feeling, little stickiness).
[0044] In this specification, cosmetics include hair or skin cleansers (such as shampoos, facial cleansers like cream facial cleansers, cream facial cleansers, body soaps, solid soaps, cleansing oils, and liquid soaps), hair care cosmetics (such as hair rinses, conditioners like non-cationic conditioners, non-cationic conditioners, treatments, hair oils, and styling agents (such as hair gels, hair sprays, etc.)), skin care cosmetics (such as lotions, milky lotions, creams, hand creams, all-in-one gels, and shaving agents), makeup cosmetics (such as emulsified foundations, solid foundations, pressed foundations, liquid foundations, makeup bases, BB creams, CC creams, white powders, lipsticks, blushers, eyeliners, eyeshadows, eyebrows, and mascaras), hair cosmetics (such as hair waxes, hair gels, hair sprays, and hair colorants), sunscreen cosmetics (such as sunscreen creams, sunscreen gels, roll-on type sunscreens, and shake well sunscreens), cleansing cosmetics (such as packs, makeup removing sheets, sweat wiping sheets, and hair wiping sheets), fragrance products, and antiperspirants, etc.
[0045] There is no particular limitation on the dosage form of the cosmetics of the present invention, and examples include powdery, solid, solid powdery, stick-like, liquid (such as homogeneous liquid and emulsion), cream-like, sheet-like, and gel-like. When the cosmetics are emulsion cosmetics, they may be in the form of either water-in-oil or oil-in-water emulsions.
[0046] In addition to the coated particles for cosmetics, the cosmetics of the present invention may contain other components contained in known cosmetics. Other components include known cosmetic components such as amphoteric surfactants, anionic surfactants, cationic surfactants, nonionic surfactants, oily components, water, solvents, humectants, chelating agents, conditioning agents, thickeners, whitening agents, pH adjusters, cooling agents, colorants, preservatives, ultraviolet ray protectants, antioxidants, pigments, extender pigments, and organic powders. These may be used alone or in combination of two or more.
[0047] Examples of amphoteric surfactants include alkyldimethyl acetate betaine, fatty acid amidopropyl betaine, alkylimidazolinium betaine, sulfobetaine-type amphoteric surfactants, and amphoteric amino acid-based surfactants.
[0048] Examples of alkyldimethyl acetate betaines include lauryldimethylaminoacetate betaine [also known as lauryl betaine], myristyldimethylaminoacetate betaine [also known as myristyl betaine], and stearyldimethylaminoacetate betaine [also known as stearyl betaine].
[0049] Examples of fatty acid amidopropyl betaines include lauric acid amidopropyl betaine [also known as lauramidopropyl betaine], myristate acid amidopropyl betaine [also known as myristamidopropyl betaine], isostearic acid amidopropyl betaine, and coconut oil fatty acid amidopropyl betaine [also known as cocamidopropyl betaine].
[0050] Examples of alkylimidazolinium betaines include sodium N-lauroyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine [also known as sodium lauroamphoacetate] and sodium N-cocoamphoacetate acyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine [also known as sodium cocoamphoacetate].
[0051] Examples of sulfobetaine-type amphoteric surfactants include lauramidopropyl hydroxysultaine and cocamidopropyl hydroxysultaine.
[0052] Examples of amphoteric amino acid-based surfactants include sodium lauryl-β-aminopropionate.
[0053] Examples of anionic surfactants include ether carboxylic acids or their salts, sulfate esters, sulfonates, phosphate esters, fatty acid salts, and anionic amino acid-based surfactants.
[0054] Examples of ether carboxylate salts or their salts include sodium polyoxyethylene (average degree of polymerization 4) lauryl ether carboxylate [also known as sodium laureth-4 carboxylate], sodium polyoxyethylene (average degree of polymerization 6) lauryl ether carboxylate [also known as sodium laureth-6 carboxylate], sodium polyoxyethylene (average degree of polymerization 4) tridecyl ether carboxylate [also known as sodium trideceth-4 carboxylate], and sodium polyoxyethylene (average degree of polymerization 7) tridecyl ether carboxylate [also known as sodium trideceth-7 carboxylate].
[0055] Examples of sulfate ester salts include sodium lauryl sulfate [also known as sodium lauryl sulfate], sodium polyoxyethylene (average degree of polymerization 3) lauryl ether sulfate [also known as sodium laureth-3 sulfate], polyoxyethylene (average degree of polymerization 3) lauryl ether sulfate triethanolamine [also known as TEA laureth-3 sulfate], sodium polyoxyethylene (average degree of polymerization 3) coconut oil fatty acid monoethanolamide sulfate [also known as PEG-3 coconut oil fatty acid amide MEA sulfate], and sodium polyoxyethylene (average degree of polymerization 3) alkyl (12-13 carbon atoms) ether sulfate [also known as (C12,C13) pareth-3 sulfate].
[0056] Examples of sulfonates include sodium dodecylbenzenesulfonate [also known as sodium dodecylbenzenesulfonate], disodium lauryl sulfosuccinate (also known as disodium laureth sulfosuccinate) of polyoxyethylene (average degree of polymerization 2), disodium lauryl sulfosuccinate [also known as disodium lauryl sulfosuccinate], and disodium lauroylethanolamide (average degree of polymerization 5) sulfosuccinate.
[0057] Examples of phosphate ester salts include sodium lauryl phosphate [also known as sodium lauryl phosphate] and sodium polyoxyethylene lauryl ether phosphate [also known as trilaureth-4 phosphate].
[0058] Examples of fatty acid salts include sodium myristate [also known as myristate Na], potassium myristate [also known as myristate K], myristate triethanolamine [also known as myristate TEA], sodium laurate [also known as laurate Na], potassium laurate [also known as laurate K], laurate triethanolamine [also known as laurate TEA], sodium stearate [also known as stearate Na], stearate triethanolamine [also known as stearate TEA], sodium palmitate [also known as palmitate Na], and palmitate triethanolamine [also known as palmitate TEA].
[0059] Examples of anionic amino acid-based surfactants include sodium N-coconut oil fatty acid methyl taurate [also known as cocoyl methyl taurate Na], sodium N-coconut oil fatty acid sarcosinate [also known as cocoyl sarcosinate Na], sodium N-lauroyl sarcosinate [also known as lauroyl sarcosinate Na], N-coconut oil fatty acid sarcosinate triethanolamine [also known as acyl glutamate TEA], N-coconut oil fatty acid acyl-L-glutamate triethanolamine [also known as cocoyl glutamate TEA], sodium N-coconut oil fatty acid acyl-L-glutamate [also known as cocoyl glutamate Na], and lauroyl-L-glutamate triethanolamine [also known as lauroyl glutamate TEA].
[0060] Examples of cationic surfactants include quaternary ammonium salts and amine salts.
[0061] Examples of quaternary ammonium salts include stearyltrimethylammonium chloride [also known as steartrimonium chloride], behenyltrimethylammonium chloride [also known as behentrimonium chloride], distearyldimethylammonium chloride [also known as distearyldimonium chloride], and aminopropylethyldimethylammonium ethyl sulfate [also known as quaternium-33].
[0062] Examples of amine salts include diethylaminoethyl stearate [also known as stearamidoethyldiethylamine] and dimethylaminoethyl behenate [also known as behenamidopropyldimethylamine].
[0063] Examples of nonionic surfactants include alkylene oxide (C2-C8) adducts of C4-C24 alcohols, esters of C8-C24 fatty acids with alcohols or alkylene oxide (C2-C8) polymers, alkylene oxide adducts of higher fatty acid esters of polyhydric (dihydric-dechydric) alcohols, glycerin fatty acid esters, polyglycerin fatty acid esters, and fatty acid alkanolamides.
[0064] Examples of alkylene oxide (carbon 2-8) adducts of alcohols having 4-24 carbon atoms include polyoxyethylene (average degree of polymerization 10) polyoxypropylene (average degree of polymerization 7) butyl ether [also known as PPG-7 buteth-10], polyoxyethylene (average degree of polymerization 20) lauryl ether [also known as laureth-20], polyoxyethylene (average degree of polymerization 20) oleyl ether [also known as oleth-20], polyoxyethylene (average degree of polymerization 12) polyoxypropylene (average degree of polymerization 2) cetyl ether [also known as PPG-2 ceteth-12], and mixtures of polyoxyethylene cetearyl ether and polyoxyethylene oleyl ether [also known as ceteth-5].
[0065] Esters of fatty acids with 8 to 24 carbon atoms and alcohols or alkylene oxide polymers (with 2 to 8 carbon atoms) include: glyceryl monostearate [also known as glyceryl stearate], glyceryl monocaprylate [also known as glyceryl caprylate], glyceryl monomyristate [also known as glyceryl myristate], glyceryl monooleate [also known as glyceryl oleate], ethylene glycol monostearate [also known as glycol stearate], sorbitan monolaurate [also known as sorbitan laurate], sorbitan monopalmitate [also known as sorbitan palmitate], sorbitan monostearate [also known as sorbitan stearate], sorbitan monooleate [also known as sorbitan oleate], sorbitan coconut oil fatty acid, monooleate Examples include polyoxyethylene (average degree of polymerization 6) sorbitan oleate [also known as PEG-6 sorbitan oleate], polyoxyethylene (average degree of polymerization 20) stearyl ether [also known as steareth-20], polyoxyethylene glycol monostearate (average degree of polymerization 23) [also known as PEG-23 stearate], polyoxyethylene glycol distearate (average degree of polymerization 3) [also known as PEG-3 distearate], polyoxyethylene glycol distearate (average degree of polymerization 150) [also known as PEG-150 distearate], polyoxyethylene glycol distearate (average degree of polymerization 190) [also known as PEG-190 distearate], and polyoxyethylene (average degree of polymerization 60) hydrogenated castor oil [also known as PEG-60 hydrogenated castor oil].
[0066] Alkylene oxide adducts of higher fatty acid esters of polyhydric (dihydric to decahydric) alcohols include those obtained by addition polymerization of polyethylene oxide (average degree of polymerization 6) to glycerol esters of caprylic acid and capric acid [also known as: (caprylic acid / capric acid) PEG-6 glycerides], polyoxyethylene monolaurate (average degree of polymerization 10) sorbitan [also known as: PEG-10 sorbitan laurate], polyoxyethylene monolaurate (average degree of polymerization 80) sorbitan [also known as: PEG-80 sorbitan laurate], polyoxyethylene monooleate (average degree of polymerization 6) sorbitan [also known as: PEG-6 sorbitan oleate], polyoxyethylene monooleate (average degree of polymerization 3) sorbitan [also known as: Examples include: PEG-3 sorbitan oleate, polyoxyethylene monooleate (average degree of polymerization 40) sorbitan [also known as PEG-40 sorbitan oleate], polyoxyethylene monostearate (average degree of polymerization 6) sorbitan [also known as PEG-6 sorbitan stearate], polyoxyethylene monostearate (average degree of polymerization 40) sorbitan [also known as PEG-40 sorbitan stearate], polyoxyethylene triisostearate (average degree of polymerization 160) sorbitan [also known as PEG-160 sorbitan triisostearate], and polyoxyethylene (average degree of polymerization 120) dioleate methyl glucoside [also known as PEG-120 methyl glucose dioleate].
[0067] Examples of polyglycerin fatty acid esters include decaglyceryl monooleate [also known as polyglyceryl-10 oleate], decaglyceryl monolaurate [also known as polyglyceryl-10 laurate], decaglyceryl isostearate [also known as polyglyceryl-10 isostearate], polyglyceryl distearate [also known as polyglyceryl-10 distearate], polyglyceryl stearate [also known as polyglyceryl-10 stearate], hexaglyceryl polyricinoleate [also known as polyglyceryl-6 polyricinoleate], and diglyceryl monoisostearate [also known as polyglyceryl-2 isostearate].
[0068] Examples of fatty acid alkanolamides include coconut oil fatty acid monoethanolamide [also known as cocamide MEA], coconut oil fatty acid N-methylethanolamide [also known as cocamide methyl MEA], and coconut oil fatty acid diethanolamide [also known as cocamide DEA].
[0069] Examples of water include tap water, purified water, hard water, soft water, natural water, deep-sea water, hot spring water, electrolyzed alkaline ionized water, electrolyzed acidic ionized water, ion-exchanged water, and cluster water.
[0070] Examples of oily components include liquid oils and fats, solid oils and fats, hydrocarbon oils, synthetic ester oils, silicone oils, and essential oils.
[0071] Examples of liquid oils include avocado oil, camellia oil, turtle oil, macadamia seed oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, peach kernel oil, wheat germ oil, sasanqua oil, castor oil, linseed oil, safflower oil, white cotton seed oil, soybean oil, peanut oil, tea seed oil, citronella oil, rice bran oil, jojoba oil, rice germ oil, glyceryl tri-2-ethylhexanoate [also known as triethylhexanoin], and glyceryl triisopalmitate [also known as triisopalmitin].
[0072] Examples of solid fats and oils include cocoa butter, coconut oil, candelilla wax, carnauba wax, beeswax, microcrystalline wax, ceresin, shea butter, horse oil, hydrogenated coconut oil, palm oil, beef tallow, lanolin, hydrogenated beef tallow, palm kernel oil, hydrogenated palm oil, lard, Japanese wax, and hydrogenated castor oil.
[0073] Examples of hydrocarbon oils include 2,2,4,6,6-pentamethylheptane (also known as isododecane), 2,2,4,4,6,8,8-heptamethylnonane (also known as isohexadecane), hexamethyltetracosan (also known as squalane), 2,6,10,15,19,23-hexamethyltetracosa-2,6,10,14,18,22-hexaene (also known as squalene), petrolatum, paraffin, hydrogenated polyisobutene, ozokerite, and 2,6,10,14-tetramethylpentadecane.
[0074] Examples of synthetic ester oils include isopropyl myristate, cetyl ethylhexanoate, octyldodecyl myristate, cetyl palmitate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl ethylhexanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl hydroxystearate, glycol diethylhexanoate, and neopentyl dicaprate. Glycol, tryster of caprylic acid, capric acid, and glycerin [also known as: tri(caprylic / capric acid)glyceryl], hydroxystearic acid, hydroxystearic acid, stearic acid, and rosin acid hexaester of dipentaerythritol [also known as: hexa(hydroxystearic acid / stearic acid / rosin acid)dipentaerythrityl], diisostearyl malate, glyceryl diisostearate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triethylhexanoate Rollpropane, pentaerythrityl tetraethylhexanoate, trimethylolpropane triisostearate, ethylhexyl palmitate, glyceryl trimiristate [also known as trimiristin], methyl ricinoleate, oleyl oleate, diisobutyl adipate, ester of lauroyl glutamate, phytosterol, and octyldodecanol [also known as di(phytosteryl / octyldodecyl) lauroyl glutamate], diheptyl undecyl adipate, ethyl laurate, seba Examples include diethylhexyl cinnamate, isocetyl myristate, hexyldecyl palmitate, dihexyldecyl adipate, diisopropyl sebacate, diethylhexyl succinate, triethyl citrate, polyoxyethylene (average degree of polymerization 3) trimethylolpropane triisostearate [also known as PEG-3 trimethylolpropane triisostearate], diglyceryl triisostearate [also known as polyglyceryl-2 triisostearate], and sucrose tetraisostearate.
[0075] Examples of silicone oils include linear polysiloxanes, cyclic polysiloxanes, and modified polysiloxanes (such as amino-modified polysiloxanes, polyether-modified polysiloxanes, alkyl-modified polysiloxanes, and fluorine-modified polysiloxanes).
[0076] Examples of linear polysiloxanes include methylphenylpolysiloxane [also known as diphenyldimethicone], caprylylmethicone, dimethicone, dimethylpolysiloxane crosslinked with divinyldimethylpolysiloxane [also known as (dimethicone / vinyldimethicone) crosspolymer], and dimethylpolysiloxane copolymer crosslinked with phenylvinyldimethylpolysiloxane [also known as (dimethicone / phenylvinyldimethicone) crosspolymer].
[0077] Examples of cyclic polysiloxanes include decamethylcyclopentasiloxane (also known as cyclopentasiloxane) and dodecamethylcyclohexasiloxane (also known as cyclohexasiloxane).
[0078] Examples of modified polysiloxanes include aminopropyl dimethicone, alkyl (C26-28) dimethicone, alkyl (C30-45) dimethicone, polyoxyethylene (average degree of polymerization 10) / methylpolysiloxane copolymer [also known as PEG-10 dimethicone], polyoxyethylene (average degree of polymerization 12) / methylpolysiloxane copolymer [also known as PEG-12 dimethicone], and polyoxyethylene (average degree of polymerization 9) dimethylsiloxyethyl dimethicone [also known as PEG-9 polydimethylsiloxyethyl dimethicone].
[0079] Examples of solvents include ethanol, isoprenediol (also known as isopentyldiol), denatured alcohol, dipropylene glycol (also known as DPG), 1,2-hexanediol, isododecane, isopropanol, butyl acetate, diethylene glycol monoethyl ether (also known as ethoxydiglycol), and propylene glycol (propanediol) (also known as PG).
[0080] Examples of humectants include glycerin, 1,3-butylene glycol (also known as BG), hydrogenated rapeseed alcohol (also known as hydrogenated rapeseed alcohol), sorbitol, sodium acetate (also known as sodium acetate), sodium pyrrolidone carboxylate (also known as PCN-Na), sodium hyaluronate (also known as sodium hyaluronate), and sodium chondroitin sulfate (also known as sodium chondroitin sulfate).
[0081] Examples of chelating agents include ethylenediaminetetraacetic acid (also known as EDTA), disodium ethylenediaminetetraacetic acid (also known as EDTA-2Na), sodium polyphosphate (also known as sodium polyphosphate), disodium pyrophosphate (also known as disodium pyrophosphate), gluconic acid, sodium gluconate (also known as sodium gluconate), and ascorbic acid.
[0082] Examples of conditioning agents include polymers of quaternary ammonium salts obtained by adding glycidyltrimethylammonium chloride to hydroxyethylcellulose [also known as polyquaternium-10], polymers of quaternary ammonium salts obtained from acrylamide and dimethyldiallylammonium chloride [also known as polyquaternium-7], copolymers of dimethyldiallylammonium chloride and acrylic acid [also known as polyquaternium-22], copolymers of vinyl acetate and vinylpyrrolidone [also known as (VP / VA) copolymer], quaternary ammonium salts obtained by adding glycidyltrimethylammonium chloride to guar gum [also known as guar hydroxypropyltrimonium chloride], polyethylene glycol 20000 [also known as PEG-400], sodium polyacrylate [also known as polyacrylate Na], hydroxyethylcellulose and D-pantothenyl alcohol [also known as panthenol], etc.
[0083] Examples of thickening agents include guar gum, xanthan gum, starch, behenyl alcohol, stearyl alcohol, cetearyl alcohol, cetanol, myristyl alcohol, carboxyvinyl polymer [also known as carbomer], hydroxypropyl methylcellulose, polyvinyl alcohol, sodium polyacrylate [also known as sodium polyacrylate], sodium salt of starch grafted with acrylic acid [also known as sodium acrylate grafted starch], dimethyldistearylammonium hectorite [also known as disteardimonium hectorite], talc, coconut oil fatty acid N-methylethanolamide [also known as cocamide methyl MEA], glycol distearate, and acrylic acid / alkyl methacrylate (C10-C30) copolymer [also known as (acrylates / alkyl acrylate (C10-30)) crosspolymer].
[0084] Examples of skin whitening agents include tranexamic acid, arbutin, and hydroquinone.
[0085] Examples of pH adjusters include lactic acid, citric acid, phosphoric acid, malic acid, tartaric acid, hydrochloric acid, acetic acid, sodium hydroxide, potassium hydroxide, and triethanolamine.
[0086] Examples of cooling agents include menthol, peppermint oil, thymol, methyl salicylate, and camphor.
[0087] Examples of colorants include Blue No. 1, Blue No. 2, Green No. 3, and Red No. 1.
[0088] Examples of preservatives include phenoxyethanol, o-cymen-5-ol, methylparaben, ethylparaben, propylparaben, isopropylparaben, butylparaben, and isobutylparaben.
[0089] Examples of UV protection agents include titanium dioxide particles, zinc oxide particles, ethylhexyl methoxycinnamate, dimethyl PABA ethylhexyl, and t-butyl methoxydibenzoylmethane.
[0090] Examples of titanium dioxide particles include titanium dioxide particles treated with aluminum hydroxide and stearic acid (average primary particle size: 15 nm) [product name: MT-100TV, manufactured by Teika Co., Ltd.], and titanium dioxide particles treated with aluminum hydroxide, hydrated silica, and silicone (average primary particle size: 10 nm) [product name: MTY-110M3S, manufactured by Teika Co., Ltd.].
[0091] The zinc oxide particles include zinc oxide particles (average primary particle diameter: 60 nm) [product name: FINEX-25, manufactured by Sakai Chemical Industry Co., Ltd.], zinc oxide particles (average primary particle diameter: 80 nm) [product name: MZ-150, manufactured by Teika Co., Ltd.], zinc oxide particles (average primary particle diameter: 50 nm) [product name: MZ-200, manufactured by Teika Co., Ltd.], zinc oxide particles (average primary particle diameter: 35 nm) [product name: MZ-300, manufactured by Teika Co., Ltd.], dimethicone-treated zinc oxide particles (average primary particle diameter: 60 nm) [product name: FINEX-25LP, manufactured by Sakai Chemical Industry Co., Ltd.], and dimethicone-treated zinc oxide particles (average primary particle diameter: 20 nm) [product name: FINEX-50-LPTM, manufactured by Sakai Chemical Industry Co., Ltd.]. Examples include zinc oxide particles treated with hydrogen dimethicone (average primary particle diameter: 80 nm) [product names: MZ-504R3M, MZY-153S, manufactured by Teika Co., Ltd.], zinc oxide particles treated with hydrogen dimethicone (average primary particle diameter: 50 nm) [product name: MZY-203S, manufactured by Teika Co., Ltd.], zinc oxide particles treated with hydrogen dimethicone (average primary particle diameter: 35 nm) [product name: MZY-303S, manufactured by Teika Co., Ltd.], and zinc oxide particles treated with triethoxysilylethyl polydimethylsiloxyethylhexyl dimethicone (average primary particle diameter: 35 nm) [product name: MZ-306X, manufactured by Teika Co., Ltd.].
[0092] Antioxidants include vitamin E (also known as tocopherol), dibutylhydroxytoluene (also known as BHT), butylhydroxyanisole (also known as BHA), dipotassium glycyrrhizate (also known as glycyrrhizic acid 2K), ascorbyl palmitate, and rosemary leaf extract.
[0093] Examples of pigments include white pigments (such as titanium dioxide), red pigments (such as iron oxide (red iron oxide)), yellow pigments (such as yellow iron oxide), black pigments (such as black iron oxide), and blue pigments (such as ultramarine).
[0094] Examples of extender pigments include inorganic pigments such as silicic acid, anhydrous silicic acid, magnesium silicate, talc, sericite, boron nitride, mica, synthetic mica (synthetic fluorphlogopite), glass flakes, kaolin, clay, bentonite, bismuth oxychloride, zirconium oxide, magnesium oxide, aluminum oxide, calcium sulfate, barium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, aluminum silicate, magnesium silicate, silica, alumina, and composite powders thereof.
[0095] Examples of organic powders include silicone rubber powder, silicone resin-coated silicone rubber powder, polymethylsilsesquioxane, polyamide powder, nylon powder, polyester powder, polypropylene powder, polystyrene powder, polyurethane powder, vinyl resin powder, urea resin powder, phenolic resin powder, fluororesin powder, silicon resin powder, acrylic resin powder, melamine resin powder, polycarbonate resin, divinylbenzene-styrene copolymer, silk powder, wool powder, cellulose powder, long-chain alkyl metal phosphate salts, N-monolong-chain alkylacyl basic amino acids, and complexes thereof.
[0096] The content of the coated particles for cosmetics in the cosmetic composition of the present invention can be appropriately adjusted depending on the use of the cosmetic composition and the dosage form, but from the viewpoint of moisturizing effect and low stickiness, it is preferably 0.5 to 20% by weight, and more preferably 1 to 10% by weight, based on the total weight of the cosmetic composition.
[0097] This specification discloses the following:
[0098] The present disclosure (1) is a coated particle for cosmetics having a coating layer on at least a part of the surface of the particle (B) comprising powder of the leaf of at least one plant selected from the genera Camellia, Olive, Diospyros, Curcuma, Quercus, Luffa, Lamiaceae, Ginkgo, Equisetum, Artemisia, Cycad, Mulberry, and Eucommia, and an ester compound (A), wherein the ester compound (A) is an ester compound of a sugar compound formed by the bonding of two or more monosaccharides and a fatty acid having 8 to 28 carbon atoms.
[0099] Disclosure (2) is a coated particle for cosmetics according to Disclosure (1), wherein the particle (B) is an inorganic particle (B1) or a polysaccharide particle (B2).
[0100] Disclosure (3) is a coated particle for cosmetics according to Disclosure (2), wherein the inorganic particle (B1) is a silica particle.
[0101] Disclosure (4) is a coated particle for cosmetics according to Disclosure (2) or (3), wherein the polysaccharide particle (B2) is a cellulose particle.
[0102] Disclosure (5) is a cosmetic composition containing coated particles for cosmetic composition as described in any of Disclosures (1) to (4).
[0103] The present invention will be further described below with reference to examples and comparative examples, but the present invention is not limited thereto. Hereinafter, unless otherwise specified, "parts" refers to parts by weight.
[0104] <Manufacturing Example 1: Sencha Powder> 50g of leaves from the tea plant (Camellia sinensis) were harvested, and the harvested tea leaves were steamed for about 30 seconds. The resulting leaves were placed on a sieve and dried in sunlight for one day, and then kneaded by hand for 30 minutes, repeating this process twice to obtain 10g of sencha. The obtained sencha was then ground in a mortar for 5 minutes to obtain 10g of sencha powder.
[0105] <Manufacturing Example 2: Matcha> 50g of leaves from the tea plant (Camellia sinensis) were harvested, and the harvested tea leaves were placed on a sieve and dried in sunlight for one day. The dried leaves were ground in a mortar for 30 minutes to obtain 10g of matcha.
[0106] <Manufacturing Example 3: Roasted Green Tea Powder> 10g of sencha powder was placed in a frying pan and heated over low heat for 20 minutes. Then, the heat was increased to high and it was roasted for 3 minutes to obtain 9g of roasted green tea powder.
[0107] <Manufacturing Example 4: Black Tea Powder> 100g of leaves from the tea plant (Camellia sinensis) were harvested, placed on a sieve, and dried in a shady, well-ventilated place for one day. After that, the leaves were placed in a bowl, covered with a damp towel, and left for half a day. The tea leaves were spread thinly and placed in an oven set to 140°C and heated for 10 minutes. This was then placed on a sieve and dried in a shady, well-ventilated place for two days to obtain 15g of black tea powder.
[0108] <Manufacturing Example 5: Powdered Dried Tea Leaves> 50g of leaves from the tea plant (Camellia sinensis) were harvested and placed in an oven set to 140°C, spread thinly, and heated for 10 minutes. After cooling for 120 minutes, the leaves were ground in a mortar for 10 minutes to obtain 10g of powdered dried tea leaves.
[0109] <Production Examples 6-16: Powders of Olive Leaves, Persimmon Leaves, Turmeric Leaves, Oak Leaves, Loofah Leaves, Perilla Leaves, Ginkgo Leaves, Horsetail Leaves, Mugwort Leaves, Cycad Leaves, Mulberry Leaves, and Eucommia Leaves> Olive leaves, persimmon leaves, turmeric leaves, oak leaves, loofah leaves, perilla leaves, ginkgo leaves, horsetail leaves, mugwort leaves, cycad leaves, mulberry leaves, and Eucommia leaves were spread thinly in an oven set to 140°C and heated for 10 minutes. After cooling for 120 minutes, the leaves were ground in a mortar for 10 minutes to obtain 10g of powder from each leaf.
[0110] <Examples 1-19 and Comparative Examples 1-2> In a porcelain mortar, the parts by weight of particle (B) and leaf powder listed in Tables 1-4 were placed and ground with a porcelain pestle for 1 hour. Then, the parts by weight of ester compound (A) listed in Tables 1-4 were added and ground with a porcelain pestle for 1 hour to obtain coated particles 1-19 and coated particles 1' and 2'. For the obtained coated particles 1-19 and coated particles 1' and 2', the degree of surface hydrophobicity of the coated particles, the softness of the coated particles felt on the skin, and the smooth and moist feeling of the coated particles felt on the skin were evaluated, respectively.
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[0115] The following raw materials were used as listed in Tables 1 to 4: • Cellulose particles (5 μm): Cellulose particles with an average particle size of 5 μm, product name "CELLULOBEADS D-5", manufactured by Daito Kasei Kogyo Co., Ltd. • Cellulose particles (10 μm): Cellulose particles with an average particle size of 10 μm, product name "CELLULOBEADS D-10", manufactured by Daito Kasei Kogyo Co., Ltd. • Cellulose particles (3-5 μm): Cellulose particles with an average particle size of 3-5 μm, product name "CELLULOBEADS USF-X, manufactured by Daito Chemical Industries, Ltd. - Silica particles (10 μm): Silica particles with an average particle size of 10 μm, product name "Sunsphere NP-100" AGC SI Tech Co., Ltd. - Dextrin palmitate: Product name "Leopal KL2" (degree of substitution 2), manufactured by Chiba Flour Milling Co., Ltd. - Dextrin myristate: Product name "Leopal MKL2" (degree of substitution 2), manufactured by Chiba Flour Milling Co., Ltd. - Inulin stearate: Product name "Leopal ISL2" (degree of substitution 3), manufactured by Chiba Flour Milling Co., Ltd. - (palmitic acid / ethylhexanoic acid) dextrin: Product name "Leopal TT2" (degree of substitution 1.5), manufactured by Chiba Flour Milling Co., Ltd.
[0116] <Degree of Surface Hydrophobicity of Coated Particles> The degree of surface hydrophobicity (degree of coating treatment) of the coated particles was evaluated using the following evaluation method. 0.1 g of coated particles were added to a 30 mL beaker containing 24.9 g of purified water, and stirred for 30 minutes using a magnetic stirrer. Then, using a syringe (capacity 5 mL), 1 to 2 mL of the coated particles dispersed in the purified water, avoiding the particles on the water surface, was collected together with the purified water as a coated particle dispersion. The weight of the collected coated particle dispersion and the dry weight after drying the entire collected coated particle dispersion at 105°C for 1 hour using a forward-wind dryer were measured. The measured weights were substituted into the following formula, and the degree of surface hydrophobicity of the coated particles is recorded in Tables 1 to 4. Degree of Surface Hydrophobicity of Coated Particles (%) = [1 - {(25 × Dry Weight of Collected Coated Particle Dispersion (g)) / (Weight of Collected Coated Particle Dispersion (g)) / 0.1}] × 100
[0117] <Softness of Coated Particles as Felt on the Skin> The softness of the obtained coated particles was evaluated through a sensory test conducted by 10 monitors. Specifically, 0.2g of each coated particle was applied to the back of the hand or the inside of the forearm with a finger, and the softness felt on the skin was evaluated on a 5-point scale from 1 point (very hard) to 5 points (very soft). The scores of the 10 people were compiled and the average value was calculated. The results are shown in Tables 1 to 4. By using coated particles with good softness, it is possible to obtain cosmetics with a good feel. 5 points: Very soft 4 points: Quite soft 3 points: Soft 2 points: Slightly hard 1 point: Very hard
[0118] <Smooth and moist feeling of coated particles felt on the skin> The coated particles obtained were evaluated for their smooth and moist feeling through a sensory test conducted by 10 monitors. Specifically, 0.2g of each coated particle was applied to the back of the hand or the inside of the forearm with a finger, and the smooth and moist feeling felt on the skin (feeling smooth at first and then smooth and moist as it is spread) was evaluated on a 5-point scale from 1 point (very dry after application) to 5 points (very smooth and moist). The scores of the 10 people were compiled and the average value was calculated. The results are shown in Tables 1 to 4. By using coated particles with good smooth and moist feeling, it is possible to obtain cosmetics with a good feel. 5 points: Very smooth and moisturizing 4 points: Quite smooth and moisturizing 3 points: Smooth and moisturizing 2 points: Smooth but not moisturizing 1 point: Dry upon initial application, and remains dry even after spreading
[0119] As shown in Tables 1 to 4, the coated particles for cosmetics of the present invention have better softness and a smooth yet moist feel to the skin compared to Comparative Example 1, which does not contain ester compound (A) in the coating layer of cellulose particles, and Comparative Example 2, which does not contain leaf powder in the coating layer of cellulose particles.
[0120] Cosmetics containing coated particles 1 to 19 and coated particles 1' and 2' were prepared below. In Tables 5 to 24 below, the units for the content of each component are all in weight percent.
[0121] <Examples 20-43 and Comparative Examples 3-4: Pressed Foundations> The components listed in Tables 5-9 were uniformly mixed to obtain the pressed foundations of Examples 20-43 and Comparative Examples 3-4, according to the content (weight %) listed in Tables 5-9.
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[0125]
[0126]
[0127] The following raw materials were used as listed in Tables 5 to 9: • Squalane: Olive Squalane manufactured by Higher Alcohol Industry Co., Ltd. • Neopentyl Glycol Diethylhexanoate: KAK NDO manufactured by Higher Alcohol Industry Co., Ltd. • Dimethicone: KF-96A-20CS manufactured by Shin-Etsu Chemical Co., Ltd. • Hydrogen Dimethicone Treated Talc: SI01-2 TALC JA-46R manufactured by Daito Chemical Industries, Ltd. • Dimethicone Treated Sericite: SI01-2 SERICITE FSE manufactured by Daito Chemical Industries, Ltd. • Hydrogen Dimethicone Treated Titanium Dioxide: SI01-2 TiO2 MT 500SA manufactured by Daito Chemical Industries, Ltd. • Dimethicone Treated Yellow Iron Oxide: SI-2 YELLOW LL-100P manufactured by Daito Chemical Industries, Ltd. - Dimethicone-treated red iron oxide: "KTP-09R" manufactured by Shin-Etsu Chemical Co., Ltd. - Dimethicone-treated black iron oxide: "SI-2 BLACK BL-100P" manufactured by Daito Chemical Industries, Ltd.
[0128] (Evaluation of moisturizing effect and stickiness) 0.2 g each of the pressed foundations produced in Examples 20-43 and Comparative Examples 3-4 was applied to the forearms of panelists (10 men and women aged 30 to 55), spread for 30 seconds, and then evaluated for moisturizing effect and stickiness according to the evaluation criteria below. The sum of the scores from the 10 panelists for each of the moisturizing effect and stickiness was used as the evaluation result. The results are shown in Tables 5 to 9.
[0129] [Evaluation Criteria for Moisture Sensation] 3 points: Moisture sensation felt 2 points: Somewhat moisturizing sensation felt 1 point: No moisturizing sensation felt
[0130] [Stickyness Rating Criteria] 3 points: No stickiness felt 2 points: Slightly sticky 1 point: Sticky
[0131] As shown in Tables 5 to 9, the pressed foundations of Examples 20 to 43 showed higher moisturizing properties and less stickiness compared to the pressed foundations of Comparative Examples 3 and 4, even when the type and content of coated particles were changed.
[0132] <Examples 44-67, Comparative Examples 5-6: Liquid Foundation> The components listed in Tables 10-14 were uniformly mixed to obtain the liquid foundations of Examples 44-67 and Comparative Examples 5-6, according to Tables 10-14, in the amounts (weight %) listed in Tables 10-14.
[0133]
[0134]
[0135]
[0136]
[0137]
[0138] The raw materials used are listed in Tables 10 to 14 below. Other ingredients not listed below are the same as those used in Tables 5 to 9. - Isododecane: "PUROLAN IDD" manufactured by DKSH Japan Co., Ltd. - Isotridecyl isononanoate: "KAK 139" manufactured by Higher Alcohol Industry Co., Ltd. - Polyglyceryl-2 isostearate: "Cosmol 41V" manufactured by Nisshin Oillio Group, Ltd. - PEG-9 polydimethylsiloxyethyl dimethicone: "KF-6028" manufactured by Shin-Etsu Chemical Co., Ltd. - Lauryl PEG-9 polydimethylsiloxyethyl dimethicone: "KF-6038" manufactured by Shin-Etsu Chemical Co., Ltd. - Quaternium-18 bentonite: "Moistnight-WO" manufactured by Kunimine Industries Co., Ltd. - Phenoxyethanol: "Newpol EFP" manufactured by Sanyo Chemical Industries, Ltd. - Tocopherol: "Tocopherol 100" manufactured by Nisshin Oillio Group, Ltd.
[0139] (Evaluation of moisturizing effect and stickiness) 0.2 g each of the liquid foundations produced in Examples 44-67 and Comparative Examples 5-6 was applied to the forearms of panelists (10 men and women aged 30 to 55), spread for 30 seconds, and then the moisturizing effect and stickiness were evaluated in the same manner as in Example 20. The results are shown in Tables 10-14.
[0140] As shown in Tables 10 to 14, the liquid foundations of Examples 44 to 67, even when the type and content of coated particles were changed, showed higher moisturizing properties and less stickiness compared to the liquid foundations of Comparative Examples 5 to 6.
[0141] <Examples 68-91, Comparative Examples 7-8: Shakewell Sunscreen> The components listed in Tables 15-19 were uniformly mixed to obtain the Shakewell Sunscreens of Examples 68-91 and Comparative Examples 7-8, according to Tables 15-19, in the amounts (weight %) listed in Tables 15-19.
[0142]
[0143]
[0144]
[0145]
[0146]
[0147] The raw materials used are listed in Tables 15 to 19 below. Other ingredients not listed below are the same as those used in Tables 10 to 14. - Isopropyl lauroyl sarcosinate: "Eldew SL-205" manufactured by Ajinomoto Co., Inc. - Caprylic / capric triglyceride: "O.D.O" manufactured by Nisshin Oillio Group, Ltd. - Cyclopentasiloxane: "KF-995" manufactured by Shin-Etsu Chemical Co., Ltd. - 40% fine particle titanium dioxide dispersion: "Cosmeserve WP-40W" manufactured by Dainippon Kasei Co., Ltd. - 60% fine particle zinc oxide dispersion: "ZDB-300" manufactured by Titanium Industries Co., Ltd. - Ethylhexyl methoxycinnamate: "Ubinal MC 80" manufactured by BASF Japan Ltd. - Bis-ethylhexyloxyphenol methoxyphenyl triazine: "Tinosorb S" manufactured by BASF Japan Ltd. - Diethylamino hydroxybenzoyl hexyl benzoate: "Ubinal A Plus Granula" manufactured by BASF Japan Ltd. - Disodium ethylenediaminetetraacetic acid (EDTA-2Na): "Kirest 2B-SD" manufactured by Chubu Kirest Co., Ltd. - Sodium chloride: Manufactured by Fujifilm Wako Pure Chemical Corporation
[0148] (Evaluation of moisturizing effect and stickiness) 0.2 g each of the Shakewell sunscreens prepared in Examples 68-91 and Comparative Examples 7-8 was applied to the forearms of panelists (10 men and women aged 30 to 55), spread for 30 seconds, and then the moisturizing effect and stickiness were evaluated in the same manner as in Example 20. The results are shown in Tables 15-19.
[0149] (Evaluation of UV protection effect) Using the Shakewell sunscreens manufactured in Examples 68-91 and Comparative Examples 7-8, panelists (10 men and women aged 30 to 55) applied 0.2 g to their forearms, spread it for 30 seconds, and then evaluated the UV protection effect according to the evaluation criteria below. The sum of the scores from the 10 panelists was used as the evaluation result. The results are shown in Tables 15-19.
[0150] [Evaluation Criteria for UV Protection Effect] 3 points: UV protection effect is felt (a uniform film of sunscreen is felt to have been formed) 2 points: UV protection effect is felt to some extent (the thickness of the sunscreen film is felt to be uneven in some areas or to be thin) 1 point: UV protection effect is not felt (the sunscreen is uneven and does not seem to form a film)
[0151] As shown in Tables 15 to 19, the Shakewell sunscreens of Examples 68 to 91, even when the type and content of the coated particles were changed, showed higher moisturizing properties, less stickiness, and superior UV protection compared to the Shakewell sunscreens of Comparative Examples 7 to 8.
[0152] <Example 92: Sunscreen Cream> The sunscreen cream of Example 92 was obtained by uniformly mixing the ingredients listed in Table 20 to the amounts (by weight) listed in Table 20.
[0153]
[0154] The raw materials used are listed in Table 20 below. Note that any other ingredients not listed below are the same as those used in Tables 10 to 19. • Neopentyl glycol diethylhexanoate: KAK NDO manufactured by Higher Alcohol Industry Co., Ltd. • Polysorbate 65: TWEEN 65 (registered trademark) manufactured by Croda Japan Co., Ltd. • Polysorbate 60: Ionet T-60V manufactured by Sanyo Chemical Industries, Ltd. • Glyceryl stearate (SE): NIKKOL MGIS manufactured by Nikko Chemicals Co., Ltd. • Cetearyl alcohol: Cetostearyl alcohol manufactured by Higher Alcohol Industry Co., Ltd. • Glycol stearate: NIKKOL EGMS-70V manufactured by Nikko Chemicals Co., Ltd. • Stearic acid: Stearic acid 55 manufactured by Miyoshi Oil & Fat Co., Ltd. • Silica-treated fine particle titanium dioxide: Titanium ST-455WS manufactured by Titanium Industry Co., Ltd. • Methylene bisbenzotriazolyltetramethylbutylphenol 50% aqueous dispersion: TinosorbM manufactured by BASF - Bentonite: Kunimine Industries Co., Ltd. "Kunipia-F" - Xanthan gum: Nisshin Oillio Group Ltd. "Nomucoat ZZ" - Glycerin: Miyoshi Oil & Fat Co., Ltd. "Cosmetic-grade concentrated glycerin" - Propanediol: Primient Covation, LLC. "Zemea Select Propanediol" - Arginine: Ajinomoto Co., Inc. "L-Arginine C Grade"
[0155] The sunscreen cream of Example 92 had a high moisturizing effect, was not sticky, and had a high UV protection effect.
[0156] <Example 93: Eyeshadow> The ingredients listed in Table 21 were uniformly mixed to the content (by weight) listed in Table 21, filled into a container, and molded to obtain the solid powder cosmetic eyeshadow of Example 93.
[0157]
[0158] The following raw materials were used as listed in Table 21: • Hydrogenated polydecene: "Dekanex 2004 FG" manufactured by IMCD Benelux B. V. • Diisostearyl malate: "Cosmole 222" manufactured by Nisshin Oillio Group Ltd. • Dimethicone-treated mica: "SI01-2 MICA Y-2300" manufactured by Daito Chemical Industries, Ltd. • Titanium mica: "RonaFlair Extender W" manufactured by Merck Performance Materials LLC • Ultramarine: "CP Granules <Blue>" manufactured by Ichimaru Filecos Co., Ltd. • Red 226: "UNIPURE RED LC300" manufactured by Sensient Technologies Japan Co., Ltd.
[0159] The eyeshadow in Example 93 was highly moisturizing and not sticky.
[0160] <Example 94: Mascara> The ingredients listed in Table 22 were uniformly mixed to obtain the mascara of Example 94, with the contents (by weight) listed in Table 22.
[0161]
[0162] The following raw materials were used as listed in Table 22. Note that, among the other components, those not listed below are the same as the raw materials used in Tables 1 to 19. • Hydrogenated polyisobutene: "Rubitol Light EM" manufactured by BASF Japan Ltd. • Polyethylene: "Micropoly 1160S" manufactured by MP Gokyo Food & Chemical Co., Ltd. • Microcrystalline wax: "Purified microcrystalline wax" manufactured by Nikko Rica Co., Ltd. • Trimethylsiloxysilicate: "BELSILTMS 803" manufactured by Asahi Kasei Wacker Silicone Co., Ltd. • Dimethylsilylated silica: "HDK H15" manufactured by Asahi Kasei Wacker Silicone Co., Ltd. • Propylparaben: "Nipazol M" manufactured by Clariant Japan Co., Ltd.
[0163] The mascara in Example 94 was less sticky.
[0164] <Example 95: Lipstick> The ingredients listed in Table 23 were uniformly mixed to obtain the lipstick of Example 95, with the content (by weight) as listed in Table 23.
[0165]
[0166] The raw materials used are listed in Table 23 as follows. Note that other ingredients not listed below are the same as those used in Tables 10 to 14 and Table 22.・2-Octyldodecanol: "Calcol 200GD" manufactured by Kao Corporation ・Diisostearyl malate: "Cosmol 222" manufactured by Nisshin Oillio Group Ltd. ・Polyglyceryl-2 triisostearate: "Cosmol 43N" manufactured by Nisshin Oillio Group Ltd. ・Neopentyl glycol dicaprate: "Estemol N-01" manufactured by Nisshin Oillio Group Ltd. ・Carnauba wax: "Refined Carnauba Wax R-100" manufactured by Yokozeki Oil & Fat Industry Co., Ltd. ・Candelilla wax: "Refined Candelilla Wax de BA" manufactured by Yokozeki Oil & Fat Industry Co., Ltd. ・Ceresin: "Refined Ceresin N" manufactured by Nikko Rica Co., Ltd. ・Cholesteryl hydroxystearate: "Saracos HS" manufactured by Nisshin Oillio Group Ltd. ・Hexa(hydroxystearate / stearate / rosinate)dipentaerythrityl: "Cosmol" manufactured by Nisshin Oillio Group Ltd. 168ARV - 48% fine particle titanium dioxide dispersion: "FLT-17" manufactured by Teika Co., Ltd. - Titanium dioxide coated mica: "Timiron Silk Red" manufactured by Merck Performance Materials LLC - Red 202: "UNIPURE RED LC3079" manufactured by Sensient Technologies Japan Co., Ltd. - Red iron oxide: "COLORONA BORDEAUX" manufactured by Merck Performance Materials LLC - Blue No. 1: "UNIPURE BLUE LC621" manufactured by Sensient Technologies Japan Co., Ltd. - Propylparaben: "Nipazol M" manufactured by Clariant Japan Co., Ltd.
[0167] The lipstick in Example 95 had a high moisturizing effect and was not sticky.
[0168] <Example 96: Skin Care Emulsion> The ingredients listed in Table 24 were uniformly mixed to obtain the skin care emulsion of Example 96, with the contents (by weight) listed in Table 24.
[0169]
[0170] The following raw materials were used as listed in Table 24. Note that other components not listed below are the same as those used in Tables 10 to 20. • (C13,14) Isoparaffin, polyacrylamide, and laureth-7 mixture: SEPPIC S. A.・"SEPIGEL 305" manufactured by Nisshin Oillio Group Ltd. ・Triethylhexanoin: "T.I.O" manufactured by Nisshin Oillio Group Ltd. ・Lauroyl glutamate di(phytosteryl / octyldodecyl): "Eldew PS-203" manufactured by Nisshin Oillio Group Ltd. ・Isostearic acid: "Isostearic acid EX" manufactured by Higher Alcohol Industry Co., Ltd. ・Pentaerythrityl tetraethylhexanoate: "Sarakos 5408" manufactured by Nisshin Oillio Group Ltd. ・Polysorbate 20: "Ionet T-20C" manufactured by Sanyo Chemical Industries, Ltd. ・PEG-11 methyl ether dimethicone: "KF-6011" manufactured by Shin-Etsu Chemical Co., Ltd. ・(Acrylates / C10-30 alkyl acrylate) crosspolymer: "AQUPEC HV-501ER" manufactured by Sumitomo Seika Co., Ltd. - Propanediol: "effisin Propanediol" manufactured by Ashland Japan Co., Ltd. - Pentylene glycol: "Diol PD" manufactured by Higher Alcohol Industry Co., Ltd. - Sodium hydroxide: Manufactured by Fujifilm Wako Pure Chemical Corporation
[0171] The skincare lotion in Example 96 provided high moisturizing effects with minimal stickiness.
[0172] The coated particles for cosmetics of the present invention have a hydrophobic surface and provide a good feel (softness, smoothness, and moisturizing effect). By adding them to cosmetics, the water resistance and feel (high moisturizing effect, low stickiness) of the cosmetics can be improved. They can be suitably used in the various cosmetics mentioned above, but are more preferably used in cosmetics applied for the purpose of decorating or protecting the skin and hair, and are particularly suitable for use in makeup cosmetics, UV care cosmetics, and antiperspirants.
Claims
1. Cosmetic coated particles having a coating layer on at least a portion of the surface of particle (B) comprising powder of the leaves of at least one plant selected from the genera Camellia, Olive, Diospyros, Curcuma, Quercus, Luffa, Lamiaceae, Ginkgo, Equisetum, Artemisia, Cycad, Mulberry, and Eucommia, and an ester compound (A), wherein the ester compound (A) is an ester compound of a sugar compound formed by the bonding of two or more monosaccharides and a fatty acid having 8 to 28 carbon atoms.
2. Coated particles for cosmetics according to claim 1, wherein the particle (B) is an inorganic particle (B1) or a polysaccharide particle (B2).
3. The coated particles for cosmetics according to claim 2, wherein the inorganic particles (B1) are silica particles.
4. The coated particles for cosmetics according to claim 2, wherein the polysaccharide particles (B2) are cellulose particles.
5. A cosmetic composition comprising coated particles for cosmetic use as described in any one of claims 1 to 4.