WO2010113899A1 - 化粧料 - Google Patents
化粧料 Download PDFInfo
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- WO2010113899A1 WO2010113899A1 PCT/JP2010/055611 JP2010055611W WO2010113899A1 WO 2010113899 A1 WO2010113899 A1 WO 2010113899A1 JP 2010055611 W JP2010055611 W JP 2010055611W WO 2010113899 A1 WO2010113899 A1 WO 2010113899A1
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- Prior art keywords
- metal oxide
- flakes
- average thickness
- thickness
- coating layer
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
- A61Q1/02—Preparations containing skin colorants, e.g. pigments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0241—Containing particulates characterized by their shape and/or structure
- A61K8/0254—Platelets; Flakes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/25—Silicon; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/26—Aluminium; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/28—Zirconium; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/29—Titanium; Compounds thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
- A61Q1/12—Face or body powders for grooming, adorning or absorbing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/41—Particular ingredients further characterized by their size
- A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/42—Colour properties
- A61K2800/43—Pigments; Dyes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/60—Particulates further characterized by their structure or composition
- A61K2800/61—Surface treated
- A61K2800/62—Coated
- A61K2800/621—Coated by inorganic compounds
Definitions
- the present invention relates to cosmetics.
- titanium oxide and iron oxide are used to cover the dullness of the skin color that is felt with aging due to poor blood circulation and pigmentation (a state in which lightness decreases and yellow saturation increases).
- the amount of the face with high hiding power is blended, or red color such as bengara, lake pigment or organic pigment is added to change the hue of the skin.
- composite powders using metal oxide flakes and cosmetics using the same are also known in order to obtain high UV shielding ability, high transparency to visible light, and good usability.
- metal oxide fine particles having a particle diameter of 30 nm to 120 nm are dispersed in the form of single particles, and a metal oxide fine particle-dispersed flaky glass having a thickness of 0.4 ⁇ m to 0.9 ⁇ m.
- cosmetics containing the same are disclosed.
- 9-71417 discloses a thickness of 25 nm to 95 nm on the surface of a metal oxide flake powder mainly composed of amorphous silica having an aspect ratio of 50 to 94 ⁇ m to 0.8 ⁇ m.
- a titanium oxide-coated metal oxide flaky powder coated with a titanium oxide layer and a cosmetic containing the same are disclosed.
- the layer structure described in this document has a low reflectance as a powder, so that the brightness when blended into a cosmetic is not sufficient, and there is a problem that the saturation as a cosmetic is impaired.
- an object of the present invention is to provide a cosmetic with good brightness and saturation.
- the present invention provides a cosmetic.
- a metal oxide flake having an average thickness in the range of 50 nm to 200 nm and an aspect ratio in the range of 10 to 1000, a surface of the metal oxide flake, and the metal oxide flake
- the ratio ⁇ / ⁇ of the standard deviation ( ⁇ ) to the average value ( ⁇ ) of the thickness of the metal oxide flakes preferably satisfies ⁇ / ⁇ ⁇ 0.5.
- the coating layer may contain at least one metal oxide selected from titanium oxide, tin oxide, zinc oxide and zirconium oxide as a main component.
- the cosmetic is preferably a foundation, a makeup base, a face powder, or a point makeup cosmetic.
- the cosmetic of the present invention covers metal oxide flakes having an average thickness in the range of 50 nm to 200 nm and an aspect ratio in the range of 10 to 1000, the surface of the metal oxide flakes, and from the metal oxide flakes.
- a cosmetic comprising a composite powder having a coating layer having a high refractive index.
- the cosmetic of the present invention contains a composite powder composed of metal oxide flakes having a predetermined shape and coated with a coating layer having a higher refractive index than that of metal oxide flakes, the reflectance of individual flake powders alone Therefore, when blended in a skin color-based cosmetic, the brightness of the cosmetic as a whole is improved, and at the same time, the saturation is kept high.
- the term “process” is not limited to an independent process, and is included in this term if the intended action of this process is achieved even when it cannot be clearly distinguished from other processes. .
- a numerical range indicated by using “to” indicates a range including the numerical values described before and after “to” as the minimum value and the maximum value, respectively.
- the amount of each component in the composition when there are a plurality of substances corresponding to each component in the composition, the plurality present in the composition unless otherwise specified. Means the total amount of substances. The present invention will be described below.
- the metal oxide flakes in the present invention are metal oxide flakes having an average thickness in the range of 50 nm to 200 nm and an aspect ratio in the range of 10 to 1000.
- metal oxide flake means the whole aggregate of powders (individual flakes), and values such as average thickness and aspect ratio are the average, aspect ratio of the whole metal oxide flake as an aggregate. Means ratio.
- the “thickness” of the powder means the maximum length of an axis perpendicular to the reference plane, with the plane having the maximum area among the surfaces constituting one powder as the reference plane.
- “Horizontal” means the length of the long axis that is the maximum of the reference plane, and “Vertical” means the minimum length of the axis that is orthogonal to the long axis that is the maximum of the reference plane.
- average particle size refers to what is generally used for tabular grains in the industry, that is, the sum of the length and width of one powder, ie, the length in the major axis direction. And the length in the minor axis direction is divided by 2.
- the average thickness of the metal oxide flakes in the present invention is preferably 50 nm to 150 nm, and more preferably 70 nm to 150 nm so that the metal oxide flakes themselves can increase the reflectance in a wide wavelength region of visible light by the principle of thin film interference. 120 nm.
- the aspect ratio of the metal oxide flakes is 10 or more in order to develop a so-called leafing property that is aligned along the skin surface when the cosmetic of the present invention is applied to the skin.
- the aspect ratio is preferably 400 or less, and more preferably 10 to 300.
- the aspect ratio can be measured by observing the powder by scanning electron micrograph.
- the aspect ratio of the metal oxide flakes may be, for example, a value obtained by dividing the average particle diameter of 100 powders by the average value of thickness described later.
- the average particle diameter of the metal oxide flakes is preferably 1 ⁇ m to 20 ⁇ m, and more preferably 10 ⁇ m to 20 ⁇ m. If it is 1 micrometer or more, sufficient leafing property will be obtained, and if it is 20 micrometers or less, it can suppress a crack.
- the metal oxide flakes in the present invention desirably have a narrow thickness distribution, and the ratio ⁇ / ⁇ of the standard deviation ( ⁇ ) to the average value ( ⁇ ) preferably satisfies ⁇ / ⁇ ⁇ 0.5. .
- the ratio ⁇ / ⁇ of the standard deviation ( ⁇ ) to the average value ( ⁇ ) preferably satisfies ⁇ / ⁇ ⁇ 0.5. .
- the thickness can be measured by measuring the powder into an ultrathin section and then measuring by transmission electron micrograph, or by cutting the section and measuring by scanning electron micrograph.
- the average thickness of the metal oxide flakes is obtained by measuring the thickness of each of the metal oxide flakes taken, for example, at 10 locations for 100 powders (individual flakes). What is necessary is just to make it the average of thickness.
- any combination of two or more of these may be used, but a wider wavelength region.
- metal oxide flakes having a high reflectivity preferably, metal oxide flakes having an average thickness of 50 nm to 150 nm and an aspect ratio of 10 to 400, and optionally having an average particle diameter of 1 to 20 ⁇ m, can do. More preferably, metal oxide flakes having an average thickness of 70 nm to 120 nm, an aspect ratio of 10 to 300, and an average particle diameter of 1 to 20 ⁇ m may be used.
- Examples of the metal oxide flakes in the present invention include glass, mica, sericite, talc, silica, titanium dioxide, zinc oxide, zirconia and the like, and these may be used alone or in combination of two or more. From the viewpoint of showing a preferable reflectance when coated with a coating layer to be described later, glass, mica, sericite, talc, silica, or a combination of two or more thereof is preferable.
- the metal oxide flakes in the present invention can be prepared from a liquid containing an organometallic compound that can be hydrolyzed and polycondensed, for example, as described in JP-A-3-285838 and JP-A-4-37622. Specifically, a solution (precursor solution) containing a hydrolyzable / polycondensable organometallic compound is applied onto a suitable substrate, dried, peeled off from the substrate into a film, and sintered. Thus, metal oxide flakes can be obtained.
- a metal alkoxide having an alkoxyl group is preferable.
- the metal in the metal alkoxide include silicon, titanium, aluminum, and zirconium
- examples of the alkoxide in the metal alkoxide include methoxide, ethoxide, propoxide, and butoxide.
- Such metal alkoxides are used alone or as a mixture. Since glass flakes are preferably used as the metal oxide flakes of the present invention, silicon alkoxides are preferably used as the organometallic compounds.
- the solvent of the solution containing the organometallic compound is not particularly limited as long as it can substantially dissolve the organometallic compound, and alcohols such as methanol, ethanol, propanol, and butanol are most preferable.
- the concentration of the organometallic compound in the solvent can be, for example, 1 to 30% by weight.
- the technique for forming the precursor film on the surface of the substrate may be any known technique, for example, a method in which the substrate is immersed in a liquid containing the organometallic compound or water and then pulled up, or the liquid on the substrate.
- a method of dropping the liquid and rotating the substrate at a high speed, a method of spraying the liquid on the substrate, or the like is used.
- the methods described in JP-A-7-315859 and JP-A-9-71417, specifically, the pulling method should be used. Is preferred.
- the metal oxide flakes in the present invention are natural mica or synthetic mica, it can be preferably obtained by peeling these mica into layers by a known method. Compared with glass flakes obtained using metal alkoxide as a raw material, the thickness distribution can be widened, but it is advantageous in terms of cost. Further, since the smoothness of the surface is slightly lowered as compared with glass flakes, there is a feature that it is difficult to produce a glitter, and it can be used properly depending on the purpose.
- the mica flakes in the present invention may be natural mica flakes or synthetic mica flakes.
- synthetic mica flakes have high transparency and are particularly preferable for application to the present invention.
- the synthetic mica flakes in the present invention can be distinguished from natural mica flakes based on the so-called impurity content in the mica. That is, the synthetic mica flakes can be specified as those having a Fe content of less than 0.1% with respect to the mass of the mica flakes, which causes coloring that impairs transparency. In general, the content of Fe in mica flakes can be measured by fluorescent X-rays or the like.
- the coating layer of the composite powder in the present invention covers the surface of the metal oxide flake and has a higher refractive index than that of the metal oxide flake.
- the compound that forms the coating layer has a purpose of obtaining a high reflectance in a wavelength region having a wide visible range by the principle of thin film interference, and therefore any compound that realizes a higher refractive index than metal oxide flakes may be used.
- the refractive index in this case is generally based on a value calculated from reflectance measurement or ellipsometer measurement when a thin film is formed on a reference plate with a known refractive index.
- the refractive index of the metal oxide flakes is, for example, 1.50
- the refractive index of the coating layer is higher than 1.50, preferably 2.00 or higher, more preferably 2.20 or higher.
- Such a coating layer preferably contains a metal oxide as a main component.
- metal oxides include titanium oxide (anatase type titanium dioxide: refractive index 2.52, rutile type titanium dioxide: refractive index 2.71), zirconium oxide (refractive index 2.40), tin oxide, and oxidation. Zinc (refractive index 1.95) or the like, or a combination of two or more thereof can be given.
- the main component is at least one metal oxide selected from titanium oxide, tin oxide, and zinc oxide, and the refractive index is particularly high as compared with metal oxide flakes. Titanium oxide is most preferred.
- the “main component” means a component containing 90% by mass or more with respect to the total mass of the coating layer.
- the method of coating the metal oxide flakes with the coating layer may be any method known as a wet method or a vapor deposition method.
- a method for hydrolyzing acidic sulfuric acid titanium oxysulfate at a boiling temperature for example, JP-B 43-25644
- a method for hydrolyzing titanium tetrachloride for example, JP-B 49-3824
- the coating average thickness of the coating layer is preferably 25 nm to 150 nm from the viewpoint of improving the reflectance of the powder. If the average thickness is 25 nm or more, a sufficient increase in the reflectance of the powder can be expected. On the other hand, if the average thickness is 150 nm or less, the wavelength that gives the maximum and minimum of the reflection spectrum is sufficiently separated from each other. A decrease in average reflectance in the wavelength range of the entire light can be sufficiently suppressed.
- the average thickness of the coating layer is more preferably 40 nm to 90 nm when the compound constituting the coating layer is titanium oxide. Here, the smaller the distribution of the average thickness of the coating layer between the powders, the better.
- the average thickness distribution of the coating layer between the powders is 10% or less calculated by multiplying the standard deviation divided by the average thickness by 100, more strictly 5%. It is known that the effect of improving the reflectance of the composite powder by thin film interference can be exhibited.
- the metal oxide flake itself that is the substrate of the composite powder is macroscopically white
- the resulting composite powder is white with high thickness transparency.
- the average thickness of the coating layer is 40 to 60 nm, the composite powder becomes highly transparent silver.
- the average thickness of the coating layer is gradually increased to 160 nm, the transparency of yellow, red, magenta, blue and green is improved. Coloring (interference color) having a color is recognized. Further, when the average thickness of the coating layer is increased, the same colors of golden, red, magenta, blue and green are repeatedly observed.
- the metal oxide flakes according to the present invention are colored in silver to golden color by the interference effect and thickness distribution control even on the substrate alone, so that the composite powder is slightly yellowish when the average thickness of the coating layer is 40 to 60 nm. It becomes a lustrous silver to golden color, can improve brightness without causing reduction in saturation, and is most preferably used.
- the coloring of the metal oxide flakes is clearly different from that of titanium oxide-coated mica, which is generally widely used for foundations and the like, and a more transparent feeling, higher reflectance, and bright interference colors are recognized. The reason is that the metal oxide flakes themselves have an interference color due to optical thin film interference whose thickness is controlled.
- the composite powder in the present invention has the above-described metal oxide flakes and a coating layer, and exhibits high transparency, color developability and high reflectance as described above. Since the total average thickness of the composite powder is a value obtained by adding twice the thickness of the coating layer to the thickness of the metal oxide flakes, the optimum thickness range of the metal oxide flakes and the coating layer Determined from the optimum thickness range. Accordingly, the total average thickness of the composite powder is preferably 100 nm to 500 nm, more preferably 120 nm to 300 nm, and still more preferably 150 nm to 240 nm.
- the composite powder in the present invention exhibits high reflectance, and from the viewpoint of brightness and saturation, the composite powder has an average thickness of 70 nm to 120 nm and an aspect ratio of 10 to 300, and an average thickness ( ⁇ ) And standard deviation ( ⁇ ) of ⁇ / ⁇ ⁇ 0.3, and a coating layer having an average thickness of 40 nm to 90 nm, and a total average thickness of 150 nm to 300 nm. Is particularly preferred.
- the cosmetic of the present invention is a cosmetic containing a composite powder having metal oxide flakes provided with the above coating layer.
- this cosmetic contains a composite powder having high transparency, colorability, and high reflectance, so that it has high visible light transparency, high lightness and saturation, and good color development and stability.
- the compounding amount of the composite powder in the cosmetic of the present invention varies depending on the type of the intended cosmetic, but is preferably used in the range of 1 to 80% by mass relative to the total mass of solid components such as pigments. May be in the range of 2-50% by weight, more preferably 5-30% by weight. If it is 1% by mass or more, lightness, saturation and color developability can be sufficiently expected. On the other hand, if it is 80 mass% or less, sufficient addition effects by other additives, for example, change in color tone, ease of preparation, or improvement in adhesion to the skin can be sufficiently obtained.
- the “solid component” means a solid at 25 ° C. and 1 atm.
- a commonly used pigment or the like can be used in combination as necessary.
- titanium oxide, zinc oxide, zirconium oxide, yellow iron oxide, black iron oxide, petal, ultramarine, bitumen, and other inorganic pigments pearlescent pigments such as mica titanium and bismuth oxychloride
- pearlescent pigments such as mica titanium and bismuth oxychloride
- tar dyes, natural dyes, silica beads Powders such as plastic beads such as nylon, acrylic and urethane
- extender pigments such as talc, kaolin, mica and sericite
- other mica magnesium carbonate, calcium carbonate, aluminum silicate, magnesium silicate, clays, etc. Is done.
- the composite powder may be subjected to surface treatment and modified.
- surface treatment agent methyl hydrogen polysiloxane, reactive alkyl polysiloxane, metal soap, hydrogenated lecithin, acylamino acid, acylated collagen aluminum, magnesium, calcium, titanium, zinc, zirconium
- hydrophobizing agent such as a metal salt selected from iron
- the surface of the flaky glass changes from hydrophilic to hydrophobic, so that the familiarity with the oil added during cosmetic preparation is improved.
- water repellency can be imparted, makeup collapse can be reduced.
- the cosmetics of the present invention include components blended in ordinary cosmetics, for example, various oils, surfactants, water-soluble substances, as long as the effects of the present invention are not impaired as necessary.
- oil examples include liquid paraffin, petrolatum, paraffin wax, squalane, beeswax, carnauba wax, olive oil, lanolin, higher alcohol, fatty acid, higher fatty acid, ester oil, ceresin, microcrystalline wax, candelilla wax, diglyceride, triglyceride, silicone oil.
- Oils commonly used in cosmetics such as perfluoropolyether, perfluorodecalin, perfluorooctane, jojoba oil, octyldodecyl myristate, and neopentyl glycol dioctanoate are used.
- surfactant examples include polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene Nonionic surfactants such as oxyethylene sorbitol fatty acid esters; anionic surfactants typified by fatty acid soaps such as sodium stearate and triethanolamine palmitate; and cationic surfactants and amphoteric surfactants Surfactants that are widely used in cosmetics are used.
- water-soluble polymers examples include carboxymethylcellulose, methylcellulose, hydroxymethylcellulose, polyvinyl alcohol, polyvinylpyrrolidone, tragacanth gum, carrageenan, locust bean gum, dextrin, dextrin fatty acid ester, carboxyvinyl polymer, xanthan gum, gelatin, sodium alginate, gum arabic, etc. Water-soluble polymers widely used in cosmetics are used.
- a humectant for example, it is widely used in cosmetics such as sorbitol, xylitol, glycerin, maltitol, propylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, sodium pyrrolidonecarboxylate, lactic acid, sodium lactate, polyethylene glycol, etc. Moisturizers are used.
- a preservative widely used in cosmetics such as paraoxybenzoic acid alkyl ester, sodium benzoate, potassium sorbate and the like is used.
- UV absorbers include UV absorbers commonly used in cosmetics such as paraaminobenzoic UV absorbers, anthranyl UV absorbers, salicylic acid UV absorbers, cinnamic acid UV absorbers, and benzophenone UV absorbers. Is used.
- Examples of the dye include Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 227, Red No. 228, Red 230, Red 401, Red 505, Yellow 4, Yellow 5, Yellow 202, Yellow 203, Yellow 204, Yellow 401, Blue 1, Blue 2, Blue 201, Blue 404 Tar dyes such as Green No. 3, Green No. 201, Green No. 204, Green No. 205, Orange No. 201, Orange No. 203, Orange No. 204, Orange No. 206, Orange No. 207; Carminic acid, laccaic acid, bradylin, crocin A commonly used pigment for cosmetics such as natural pigments is used.
- inorganic salts or organic acid salts include inorganic acids such as hydrochloric acid, sulfuric acid and nitric acid; oxycarboxylic acids such as citric acid, tartaric acid, lactic acid and malic acid; carboxylic acids such as formic acid, acetic acid and sorbic acid; or salicylic acid and benzoic acid
- inorganic acids such as hydrochloric acid, sulfuric acid and nitric acid
- oxycarboxylic acids such as citric acid, tartaric acid, lactic acid and malic acid
- carboxylic acids such as formic acid, acetic acid and sorbic acid
- salicylic acid and benzoic acid An alkali metal salt, an alkaline earth metal salt or an aluminum salt of an aromatic carboxylic acid such as
- preferred inorganic salts or organic acid salts include potassium sulfate, sodium sulfate, magnesium sulfate, aluminum sulfate, potassium nitrate, sodium nitrate, magnesium nitrate, aluminum nitrate, calcium nitrate, potassium chloride, magnesium chloride, sodium chloride, calcium chloride.
- inorganic salts or organic acid salts may be added to the cosmetic of the present invention in the form of a salt, but when the cosmetic of the present invention is produced, the corresponding acid substance and basic substance form a salt.
- the stoichiometric amount necessary for the addition may be added.
- water can be mix
- the cosmetic of the present invention has good brightness and saturation as described above, it can be used as various types of cosmetics including the cosmetic.
- Such cosmetics are preferably used for foundations such as powder foundations, oily foundations, cream foundations, liquid foundations, concealers, etc., makeup bases, face powders, etc., and point makeup cosmetics such as lipsticks and blushers Can be used.
- the cosmetics of the present invention have good saturation and lightness, they can reduce dullness and provide a good finish with a bright transparency when applied to any application such as a makeup base or foundation. Can do.
- glass flakes were prepared by a known method described in JP-A-7-315859, Japanese Patent No. 3723571, and the like. That is, 5400 g of tetramethoxysilane and 10000 g of 0.1 N hydrochloric acid as glass precursors were dissolved in a one-to-one mixed solvent of ethanol and 2-propanol to give predetermined concentrations, respectively, and stirred at 35 ° C. for 72 hours.
- the prepared coating solution is applied by lifting and coating on a stainless steel support with a smooth surface at a lifting speed of 30 to 50 cm / min, and is dried at 200 ° C. and then peeled off from the support.
- the collected flakes were sintered at 1000 ° C., and further pulverized and classified to obtain flat powders (metal oxide flakes) having the desired thickness and aspect ratio shown in Table 1.
- the thickness was adjusted by repeating trial and error depending on the concentration of tetramethoxysilane and the pulling speed.
- Thickness was measured at 10 locations for each of 100 powders taken from a scanning electron micrograph from the lateral direction with each flat powder dispersed on the sample stage. The average value ( ⁇ ) was obtained. In addition, the thickness distribution was evaluated as a value of ⁇ / ⁇ by calculating a standard deviation ( ⁇ ) from the thickness value of 1000 and the average thickness ( ⁇ ).
- synthetic mica was produced by purchasing a thin product that was available as a commercially available synthetic phlogopite and further classifying it. That is, PDM-5L (manufactured by Topy Industries, Ltd., synthetic phlogopite with a particle diameter of 7 ⁇ m and an average thickness of 175 nm) is classified by a known classifying means, and has a plate shape having the desired thickness and aspect ratio described in Table 1. A powder (metal oxide flakes) was obtained.
- the refractive index was directly measured using a Abbe refractometer by separately preparing a 1 mm thick plate glass for glass flakes.
- Literature values were used for the mica of Examples and Comparative Examples.
- the aspect ratio is the size of 100 powders as seen from above, that is, the average particle diameter from a photograph taken with a scanning electron microscope of flat plate powders spread and dispersed horizontally on a support substrate. (Average value of length and width) was measured, and the value obtained by dividing the average value of 100 powders by the average value of the thickness calculated by the above method was used.
- As the mica of the comparative example commercially available mica (manufactured by Merck & Co., Inc.) was used, and the thickness, aspect ratio, etc. were measured in the same manner as described above.
- the coating layer was formed by a known method described in JP-A Nos. 09-71417 and EP0106235. That is, as described in JP-A-09-71417, a titanium oxide precursor (titanium oxysulfate aqueous solution and sulfuric acid) is added to a dispersion in which tabular powder is dispersed, and then heated, stirred, filtered, washed, It dried and heat-processed the precursor at high temperature (1000 degreeC), and formed the titanium oxide coating layer.
- a titanium oxide precursor titanium oxysulfate aqueous solution and sulfuric acid
- the average thickness of the coating layer was determined from the value obtained by observing the total average thickness of the composite powder from the lateral direction with a scanning electron microscope in the same manner as the average thickness of the metal oxide flakes.
- As for the distribution of the thickness of the coating layer of the composite powder an ultra-thin slice having a thickness of 100 nm was separately prepared, and the coating thickness was measured for 10 fields of 10 powders with a transmission electron microscope. The values calculated by multiplying the standard deviation divided by the average thickness by 100 were all 10% or less.
- Examples 1 to 8 and Comparative Example 1 were prepared by weighing each of the components of A phase and B phase (numerical values are parts by mass) described below, and mixing thoroughly until the color material was elongated in a Henschel mixer. ⁇ 4 powder foundations were prepared. The types of composite powder in phase A were those listed in Table 1.
- Composite powder ( Table 1) 10.0 parts Methyl paraben 0.09 parts Phase B dimethicone (and) trimethylsiloxysilicate 2.985 parts dimethicone (20 cs) 7.0 parts tocopherol 0.005 parts phenoxyethanol 0.01 part
- Comparative Example 5 A foundation (base formulation) of Comparative Example 5 was prepared in the same manner as in Example except that 6.9 parts of sericite and 3.1 parts of talc were replaced without adding the composite powder in Table 1 above.
- ⁇ Foundation evaluation> The skin color of the normal part of the sample coated with each foundation on the skin color stain sheet is measured with a color difference meter CR-400 (manufactured by Konica Minolta Sensing Co., Ltd.), and the brightness L *, a *, b with a D65 light source is measured. * And saturation C * were obtained. Subsequently, the spot portion was color-measured, and the color difference ⁇ E * ab from the normal portion was calculated by the following formula. The value for the darkest spot (spot-1) and the next deepest spot (spot-2) among the five stages of spots was used as the evaluation of the covering power.
- Example 9 to 16, Comparative Examples 6 to 11 Each component of the A phase, B phase, and C phase described below was weighed separately.
- the kind of composite powder in A phase used the thing of Table 1.
- Phase B was added to the container of the homomixer, and phase A was gradually added while stirring, and then the container was heated to 80 ° C. and stirred until all the components in phase B were melted.
- the container to which Phase C was added was also heated to 80 ° C. and stirred until all components were dissolved.
- the liquid foundations of Examples 9 to 16 and Comparative Examples 6 to 11 were evaluated in the same manner as the above powder foundation. As a result, the foundations of Examples 9 to 16 were all excellent in brightness and saturation, and the foundations of Examples 10 to 15 were particularly high in brightness and saturation and had a bright and vivid finish. On the other hand, in the foundations of Comparative Examples 6 to 10 and the liquid foundation (Comparative Example 11) of a general-purpose prescription containing no composite powder, it was not possible to achieve such a high level of brightness and saturation.
- Example 17 Face powders were prepared in the same manner as in Examples 1 to 8, except that the ratio of the B phase of the powder foundations of Examples 1 to 8 was reduced to 1/3. With respect to the obtained face powder, samples that were further uniformly coated with a coating amount of 0.06 (g ⁇ cm ⁇ 3 ) on the surface coated with the liquid foundation base formulation of Comparative Example 11 were evaluated in the same manner as in Examples 1 to 8. Went. The obtained face powder was excellent in brightness and saturation as in the powder foundations of Examples 1 to 8.
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Abstract
Description
しかしながら、上記の技術では、明度及び彩度において効果が不十分である場合がある。
しかしながら、該文献に記載の層構成では粉体としての反射率が低いため、化粧料に配合した際の明度が十分ではなく、また、化粧料としての彩度が損なわれる問題があった。
本発明の第一の態様は、50nm~200nmの範囲の平均厚みと10~1000の範囲のアスペクト比を有する金属酸化物フレークと、前記の金属酸化物フレークの表面を被覆し、且つ前記金属酸化物フレークより高い屈折率を有する被覆層と、を有する複合粉体を含有する化粧料を提供する。
上記化粧料は、前記金属酸化物フレークの厚みの標準偏差(σ)と平均値(μ)の比σ/μが、σ/μ≦0.5を満たすことが好ましい。
また、前記被覆層が、酸化チタン、酸化スズ、酸化亜鉛及び酸化ジルコニウムから選ばれる少なくとも一つの金属酸化物を主成分として含むものであってもよい。
上記化粧料は、ファンデーション、化粧下地、フェイスパウダー又はポイントメイク化粧料であることが好ましい。
また、本明細書において「~」を用いて示された数値範囲は、「~」の前後に記載される数値をそれぞれ最小値及び最大値として含む範囲を示す。
また、本発明において、組成物中の各成分の量について言及する場合、組成物中に各成分に該当する物質が複数存在する場合には、特に断らない限り、組成物中に存在する当該複数の物質の合計量を意味する。
以下、本発明について説明する。
複合粉体を構成する金属酸化物フレークの形状をこのような形状とすることにより、金属酸化物フレークの反射率が高くなり、後述する被覆層を備えたときに高い反射スペクトルを有する複合粉体となって、良好な明度及び彩度が得られる。
なかでも、厚みの分布の小さい金属酸化物フレークを確実に得る観点から、特開平7-315859号公報及び特開平9-71417号公報に記載された方法、具体的には、引き上げ方法を用いることが好ましい。
ここで被覆層を形成する化合物は、薄膜干渉の原理によって可視域の広い波長領域で高い反射率を得ることを目的とするため、金属酸化物フレークより高い屈折率を実現するものであればよい。この場合の屈折率は、一般に、屈折率既知の基準板上に薄膜を形成した際の反射率測定やエリプソメーター測定から計算された値を基準とする。このように測定した場合に、金属酸化物フレークの屈折率が例えば1.50であった場合、被覆層の屈折率は1.50より高く、2.00以上が好ましく、2.20以上がより好ましく、2.40以上が更に好ましい。
ここで、粉体間での被覆層の平均厚みの分布は小さいほど好ましい。上記の公知の方法によって、粉体間の被覆層の平均厚みの分布は、その標準偏差を平均厚みで割った値に100をかけて算出した値で10%以下、より厳密に行えば5%以下にすることができ、薄膜干渉による複合粉体の反射率向上の効果を発揮することができることが知られている。
本発明に係る金属酸化物フレークは、基板単体でも、干渉効果と厚み分布制御によって銀色~黄金色に着色しているため、被覆層の平均厚みが40~60nmでは、複合粉体はやや黄味がかった銀色~黄金色となり、彩度の低減を起こさずに明度を向上でき、最も好ましく用いられる。
防腐剤としては、例えばパラオキシ安息香酸アルキルエステル、安息香酸ナトリウム、ソルビン酸カリウム等の化粧料に汎用される防腐剤が用いられる。
紫外線吸収剤としては、例えばパラアミノ安息香酸系紫外線吸収剤、アントラニル系紫外線吸収剤、サリチル酸系紫外線吸収剤、桂皮酸系紫外線吸収剤、ベンゾフェノン系紫外線吸収剤等の化粧料に汎用される紫外線吸収剤が用いられる。
<複合粉体の作製>
以下の方法により、表1に記載の各種複合粉体を作製した。
すなわち、ガラス前駆体としてテトラメトキシシラン5400gと0.1規定塩酸10000gをエタノール、2-プロパノールの1対1混合溶媒中にそれぞれ所定の濃度となるように溶解した後に35℃、72時間攪拌して調製した塗布液を、引き上げ速度30~50cm/分で表面が平滑なステンレス製の支持体上に厚みを厳密に制御して引き上げ塗布により塗布し、200℃にて乾燥した後、支持体から剥離し、集めたフレークを1000℃にて焼結し、更に粉砕、分級することによって表1に記載された所望の厚み、アスペクト比を有する平板状粉体(金属酸化物フレーク)を得た。厚みの調整はテトラメトキシシランの濃度と引き上げ速度によって試行錯誤を繰り返すことによって調整した。
比較例のマイカは市販のマイカ(メルク社製)を使用し、前記と同様にして、厚み、アスペクト比等を測定した。
下記に記載のA相、B相の各成分(数値は質量部)を別個に秤量し、ヘンシェルミキサーにて色材が色伸びするまで十分に混合して実施例1~8、および比較例1~4のパウダーファンデーションを調製した。A相中の複合粉体の種類は表1に記載のものを使用した。
セリサイト 47.1部
タルク 21.2部
酸化チタン 9.0部
酸化鉄(黄色) 1.8部
酸化鉄(赤色) 0.54部
酸化鉄(黒色) 0.27部
複合粉体(表1) 10.0部
メチルパラベン 0.09部
B相
ジメチコン(及び)トリメチルシロキシシリケート
2.985部
ジメチコン(20cs) 7.0部
トコフェロール 0.005部
フェノキシエタノール 0.01部
上記表1中の複合粉体を添加しないでセリサイト6.9部およびタルク3.1部に置き換えた以外は実施例と同様にして、比較例5のファンデーション(ベース処方)を調製した。
市販の肌色シミシート(バイオプレート(ビューラックス(株)製)、肌色標準色の背景中に5段階の濃度の異なる濃い肌色の円形部を有する)上に実施例1~8および比較例1~5の各ファンデーションを0.3(mg/cm3)の塗布量で均一に塗布した。
上記肌色シミシート上に各ファンデーションを塗布した試料の正常部分の肌色を色彩色差計CR-400(コニカミノルタセンシング(株)製)にて測色し、D65光源での明度L*、a*、b*、および彩度C*を得た。
続いてシミ部分を測色し、正常部との色差ΔE*abを下記式により算出した。5段階のシミの内で最も濃いシミ(シミ-1)および次に濃いシミ(シミ-2)に対する値をカバー力の評価とした。また、同シートに対するカバー力を、目視にて、5段階評価(比較例5を3点、未塗布を0点とする)にて評価した。それぞれの結果を表2に示す。
色差(ΔE*ab) = {(ΔL)2+(Δa)2+(Δb)2 }1/2
これに対して、金属酸化物フレークの厚みが大きい比較例1~4では、このような明度、彩度を高いレベルで両立できないことは明らかであり、特に、実施例と同様のガラスフレークを使用しても彩度が低く(比較例1参照)、本発明の効果が得られないことがわかる。
下記に記載のA相、B相、およびC相の各成分を別個に秤量した。なおA相中の複合粉体の種類は表1に記載のものを使用した。ホモミキサーの容器中にB相を添加し、攪拌しながらA相を徐々に添加した後、容器を80℃まで加熱してB相中の成分が全て溶融するまで攪拌した。別途、C相を添加した容器も80℃まで加熱して全ての成分が溶解するまで攪拌した。続いてB相とA相の混合物、C相の水溶液共に50℃まで降温し、B相中に徐々にC相をホモミキサーにて攪拌しながら添加し、十分に乳化するまで攪拌して、実施例1~8のものと同一の複合粉体を含む実施例9~16の各リキッドファンデーションと、比較例1~5のものと同一の複合粉体を含む又は複合粉体を含まない比較例6~11の各リキッドファンデーションを調製した。
タルク 3.9部
酸化チタン 9.6部
酸化鉄(黄色) 0.8部
酸化鉄(赤色) 0.2部
酸化鉄(黒色) 0.02部
複合粉体(表1) 5.0部
B相
シクロメチコン 5.0部
シクロメチコン(及び)ジメチコンコポリオール
15.0部
合成ワックス 0.10部
アラキジルベヘネート 0.3部
トリヒドロキシステアリン 0.4部
フェニルトリメチコン 5.0部
トリデシルイソノナノエート 5.0部
ラウレス-7 0.5部
C相
脱イオン水 43.0部
BG 8.0部
NaCl 2.0部
無水酢酸Na 0.3部
フェノキシエタノール 0.2部
EDTA-2Na 0.1部
その結果、実施例9~16のファンデーションはいずれも明度及び彩度が高く良好であり、特に実施例10~15のファンデーションは明度と彩度が特に高く、明るく鮮やかな仕上がりであった。
これに対して比較例6~10のファンデーション及び、複合粉体を含有しない汎用処方のリキッドファンデーション(比較例11)では、このような明度及び彩度の高いレベルでの両立が得られなかった。
実施例1~8のパウダーファンデーションのB相の比率を1/3に低減した以外は実施例1~8と同様にして、フェイスパウダーを調製した。得られたフェイスパウダーについて、比較例11のリキッドファンデーションベース処方を塗布した表面に更に0.06(g・cm-3)の塗布量で均一に塗布したサンプルを実施例1~8と同様に評価を行った。
得られたフェイスパウダーは、実施例1~8のパウダーファンデーションと同様、明度と彩度に優れたものであった。
本明細書に記載された全ての文献、特許出願、および技術規格は、個々の文献、特許出願、および技術規格が参照により取り込まれることが具体的かつ個々に記された場合と同程度に、本明細書中に援用されて取り込まれる。
Claims (12)
- 50nm~200nmの範囲の平均厚みと10~1000の範囲のアスペクト比を有する金属酸化物フレークと、
前記金属酸化物フレークの表面を被覆し、且つ前記金属酸化物フレークより高い屈折率を有する被覆層と、
を有する複合粉体を含有する化粧料。 - 前記金属酸化物フレークが50nm~150nmの範囲の平均厚みを有する請求項1に記載の化粧料。
- 前記金属酸化物フレークが70nm~120nmの範囲の平均厚みを有する請求項1に記載の化粧料。
- 前記金属酸化物フレークの厚みの標準偏差(σ)と平均厚み(μ)とが、σ/μ≦0.5を満たす請求項1~請求項3のいずれか1項に記載の化粧料。
- 前記金属酸化物フレークの厚みの標準偏差(σ)と平均厚み(μ)とが、σ/μ≦0.3を満たす請求項1~請求項3のいずれか1項に記載の化粧料。
- 前記被覆層の平均厚みが25nm~150nmの範囲である請求項1~請求項5のいずれか1項記載の化粧料。
- 前記複合粉体の総平均厚みが100nm~500nmの範囲である請求項1~請求項6のいずれか1項に記載の化粧料。
- 前記複合粉体が、70nm~120nmの平均厚み及び10~300のアスペクト比を有すると共に、平均厚み(μ)と標準偏差(σ)とがσ/μ≦0.3である前記金属酸化物フレークと、40nm~90nmの平均厚みを有する前記被覆層と、を有し、平均厚みが150nm~300nmである請求項1に記載の化粧料。
- 前記被覆層が、酸化チタン、酸化スズ、酸化亜鉛及び酸化ジルコニウムを有する群より選ばれる少なくとも一つの金属酸化物を主成分として含む請求項1~請求項8のいずれか1項記載の化粧料。
- 前記金属酸化物フレークがガラスフレークである請求項1~請求項9のいずれか1項記載の化粧料。
- 前記金属酸化物フレークが合成マイカである請求項1~請求項10のいずれか1項記載の化粧料。
- ファンデーション、化粧下地、フェイスパウダー又はポイントメイク化粧料である請求項1~請求項11のいずれか1項記載の化粧料。
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| US11230643B2 (en) | 2008-04-15 | 2022-01-25 | Eckart Gmbh | Pearlescent pigments based on fine and thin substrates |
| JP2013507494A (ja) * | 2009-10-14 | 2013-03-04 | エッカルト ゲゼルシャフト ミット ベシュレンクテル ハフツング | 微細で薄い合成基材をベースとする真珠光沢顔料 |
| US10125261B2 (en) | 2009-10-14 | 2018-11-13 | Eckart Gmbh | Pearlescent pigments on the basis of fine and thin synthetic substrates |
| JP2013530921A (ja) * | 2010-07-07 | 2013-08-01 | グラスフレイク・リミテッド | ガラスフレークおよびそれらの製造方法 |
| JP2021085001A (ja) * | 2019-11-29 | 2021-06-03 | 尾池工業株式会社 | 金色顔料、分散液、インク、並びに塗膜及びその製造方法 |
| JP7079503B2 (ja) | 2019-11-29 | 2022-06-02 | 尾池工業株式会社 | 金色顔料、分散液、インク、並びに塗膜及びその製造方法 |
| JP7079503B6 (ja) | 2019-11-29 | 2022-08-15 | 尾池工業株式会社 | 金色顔料、分散液、インク、並びに塗膜及びその製造方法 |
| JPWO2022244767A1 (ja) * | 2021-05-17 | 2022-11-24 | ||
| JP7730896B2 (ja) | 2021-05-17 | 2025-08-28 | 日本板硝子株式会社 | 光輝性顔料を含む化粧料 |
| WO2024024651A1 (ja) * | 2022-07-28 | 2024-02-01 | 堺化学工業株式会社 | 球状炭酸カルシウム粒子 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110133493A (ko) | 2011-12-12 |
| EP2415447A1 (en) | 2012-02-08 |
| CN102361625A (zh) | 2012-02-22 |
| US20120027830A1 (en) | 2012-02-02 |
| JPWO2010113899A1 (ja) | 2012-10-11 |
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