Solid powder cosmetic

Abstract

The purpose of the present invention is to provide: a solid powder cosmetic which has excellent color difference between an appearance color and a middle color, powder extraction properties, filling moldability, and cosmetic durability; and a method for producing the solid powder cosmetic. The solid powder cosmetic contains: (A) a metal oxide which has been subjected to a surface coating treatment with polyglycerol-2 tetraisostearate; (B) a plate-shaped powder having an average particle diameter of 1 [mu] m or more and less than 80 [mu] m And (C) a non-volatile oil agent that is liquid at 25 DEG C.

Description

Technical Field

[0001] This invention relates to a solid powder cosmetic. Background Technology

[0002] Solid powder cosmetics consist of powder and oil components and are used in color cosmetics such as eyeshadow and blush combos, and foundation. Generally, known methods for forming solid powder cosmetics include: the dry method, where the powder and oil components are mixed, filled into a pan, and compressed; and the wet method, where a solvent is mixed with the powder and oil components to form a slurry, which is then filled into a pan, the solvent is removed, and the mixture is dried. Solid powder cosmetics using the wet method produce a soft and moist feel. However, due to the different orientations of the powder on the surface and inside the formed cosmetic, there can be differences in appearance before and after use. This is especially true for solid powder cosmetics with a matte finish that do not contain pearlescent or other glossy powders, where the difference in appearance before and after use tends to be very noticeable.

[0003] To address such technical problems, for example, the following solutions have been proposed: a solid powder cosmetic containing silicone and colored pigments with an oil absorption capacity of 100 ml / 100 g or more, characterized in that a volatile solvent is added to the powder cosmetic to form a slurry, which is then filled into a container and the solvent is removed (for example, see Patent Document 1); a solid powder cosmetic in which, based on the total amount of solid powder cosmetic, the content of powder components and oily components are 70-95% by mass and 5-30% by mass, respectively, and the oily components contain hardened castor oil fatty acid esters and heavy liquid isoparaffins (for example, see Patent Document 2).

[0004] Furthermore, an oily cosmetic and a water-in-oil cosmetic are proposed, characterized in that a cosmetic powder surface-treated with an ester compound of isostearic acid and diglycerides (for example, see Patent Document 3) is incorporated, and a uniform appearance can be obtained in any oil in the oily cosmetic and the water-in-oil cosmetic.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2011-105626

[0008] Patent Document 2: Japanese Patent Application Publication No. 2019-119716

[0009] Patent Document 3: Japanese Patent Application Publication No. 2023-7281 Summary of the Invention

[0010] However, the inventors have discovered that when using the above-described technology, there are cases where the difference in appearance color before and after use (hereinafter referred to as "color difference between appearance color and mid-color") is large, and the filling and shaping properties, powder picking properties, and makeup durability are poor.

[0011] Therefore, the purpose of this invention is to provide a solid powder cosmetic with excellent color difference between the appearance color and the middle color, powder picking ability, filling and shaping ability and cosmetic durability, and a method for manufacturing the same.

[0012] Through dedicated research, the inventors discovered that by combining a metal oxide surface-coated with polyglycerol-2 tetraisostearate, a plate-shaped powder with an average particle size of 1 μm or more and less than 80 μm, and a non-volatile oil that is liquid at 25°C, a solid powder cosmetic with excellent color difference between the appearance and the middle color, powder collection properties, filling and shaping properties, and cosmetic durability can be obtained, thus completing the present invention.

[0013] That is, the present invention includes the following.

[0014] [1] A solid powder cosmetic, comprising:

[0015] (A) A metal oxide with a surface coating of polyglycerol-2-tetraisostearate;

[0016] (B) Plate-shaped powders with an average particle size of 1 μm or more and less than 80 μm; and

[0017] (C) A non-volatile oil that is liquid at 25°C.

[0018] [2] According to the solid powder cosmetic of [1], the metal oxide in the component (A) is one or more selected from the group consisting of titanium dioxide, zinc oxide, iron oxide and cerium oxide.

[0019] [3] In the solid powder cosmetic according to [1] or [2], the component (B) is an inorganic plate-shaped powder.

[0020] [4] In the solid powder cosmetic according to [1] or [2], the ingredient (C) is selected from two or more of the group consisting of hydrocarbon oils, ester oils and silicone oils.

[0021] [5] In the solid powder cosmetic according to [1] or [2], the mass ratio of the component (A) to the pigment containing the component (A) is 0.2 to 1.

[0022] [6] In the solid powder cosmetic according to [1] or [2], the mass ratio of the component (A) to the component (B) is 0.05 to 0.5.

[0023] [7] The solid powder cosmetic according to [1] or [2] also contains an oil that is a paste at 25°C, which is component (D).

[0024] [8] The solid powder cosmetic according to [1] or [2] is prepared by adding a solvent to a cosmetic base containing the ingredients (A) to (C) to form a slurry, filling it into a container, and then removing part or all of the solvent.

[0025] [9] A method for manufacturing a solid powder cosmetic, wherein a cosmetic base is mixed with a solvent to form a slurry, which is then filled into a container, and part or all of the solvent is removed, wherein the cosmetic base contains:

[0026] (A) Metal oxides that have undergone surface coating treatment with polyglycerol-2 tetraisostearate;

[0027] (B) Plate-shaped powders with an average particle size of 1 μm or more and less than 80 μm; and

[0028] (C) A non-volatile oil that is liquid at 25°C.

[0029] According to the present invention, a solid powder cosmetic with excellent color difference between appearance and middle color, powder pickling ability, filling and shaping ability and cosmetic durability can be provided. Attached Figure Description

[0030] Figure 1 This is an example of a container used in the multicolor solid powder cosmetic of the present invention, and is a conceptual diagram of a container having multiple partitions when viewed from above. Detailed Implementation

[0031] The present invention will now be described in detail. In this invention, "~" refers to a range including the values ​​before and after it as a lower and upper limit value, which can be arbitrarily combined as needed. The "average particle size" in this invention uses the following value: it is a value (D50) obtained by observing the surface condition using a scanning electron microscope (JEOL Ltd., JSM-7800prime) and measuring it based on an image analysis device (Luzex AP, Nireco Ltd.). Furthermore, in the case of asymmetric shapes, in this invention, the median particle size D50 obtained based on the distribution of the maximum particle size is used as the average particle size. In this invention, unless otherwise specified, percentages are expressed by mass, with mass % and below % denoted as "%". The embodiments described below illustrate an example of a representative embodiment of the present technology, but the scope of the present technology should not be narrowly interpreted as such.

[0032] The present invention provides a solid powder cosmetic comprising: component (A) a metal oxide surface-coated with polyglycerol-2 tetraisostearate; component (B) plate-shaped powder with an average particle size of 1 μm or more and less than 80 μm; and component (C) a non-volatile oil that is liquid at 25°C.

[0033] In solid powder cosmetics, this invention achieves the goal of obtaining solid powder cosmetics with excellent color difference between appearance and middle color by combining components (A), (B) and (C).

[0034] Furthermore, by combining components (A), (B), and (C) in a solid powder cosmetic, this invention provides a solid powder cosmetic with excellent color difference between the appearance color and the middle color, excellent powder picking ability, excellent filling and shaping ability, and excellent makeup durability.

[0035] The component (A) used in this invention is a metal oxide with a surface coating of polyglycerol-2 tetraisostearate. Component (A) can be used as a pigment powder or as a powder for coloring purposes. There are no particular limitations on the metal oxide used in component (A), as long as it is a metal oxide commonly used in cosmetics; any metal oxide can be used regardless of its shape. Examples of metal oxides used in component (A) are not particularly limited, such as titanium dioxide, zinc oxide, iron oxide (e.g., yellow iron oxide, black iron oxide, red iron oxide, etc.), cerium oxide, etc., and one or more of them can be used in combination. From the viewpoint of the color difference between the appearance color and the intermediate color, it is preferable to select one or more of the group consisting of titanium dioxide, zinc oxide, iron oxide, and cerium oxide, and more preferably one or more of the group consisting of titanium dioxide, zinc oxide, and iron oxide.

[0036] The average particle size of component (A) is not particularly limited. For example, as a preferred lower limit, it is preferably 20 nm or more, more preferably 30 nm or more, further preferably 50 nm or more, and even more preferably 100 nm or more. Furthermore, as a preferred upper limit, it is preferably 1000 nm or less, more preferably 800 nm or less, further preferably 500 nm or less, and even more preferably 300 nm or less. Moreover, as a preferred numerical range, it is preferably 20–1000 nm, more preferably 30–500 nm, and even more preferably 50–300 nm. Within this range, the color difference between the appearance color and the center color is more favorable, and therefore preferred.

[0037] Component (A) is surface-coated with polyglycerol-2-tetraisostearate. The surface-coating method is not particularly limited; examples include dispersing polyglycerol-2-tetraisostearate in an organic solvent, slowly adding it relative to the metal oxide and mixing it uniformly, and then heating to remove the organic solvent. Here, the organic solvent is not particularly limited; examples include hydrocarbons such as n-hexane, alcohols such as isopropanol, esters such as ethyl acetate, acetone, etc., and one or more selected from the group consisting of these can be used. Hydrocarbons and alcohols are preferred, and n-hexane and isopropanol are more preferred. Furthermore, the polyglycerol-2-tetraisostearate used in component (A) can be a commercially available product or manufactured using a known manufacturing method. Examples of commercially available polyglycerol-2-tetraisostearate include COSMOL 44V (manufactured by Nissin Oriyo). In addition, commercially available products using polyglycerol-2 tetraisostearate as a surface coating for metal oxides include, for example: PGQ RED No.216P, PGQ RED No.211P, PGQ YELLOW YP1200P, PGQ YELLOW No.602P, PGQ BLACK No.710P, and PGQ TiO2R250 (manufactured by Daito Kasei Corporation) (all manufactured by Daito Kasei Corporation).

[0038] In the mixing process, a mixer can be used to mix the raw materials containing polyglycerol-2 tetraisostearate, organic solvent, and metal oxide. For example, a Henschel mixer, Loedige mixer, kneader, V-type mixer, roller mill, etc. can be used, and one or more of the following can be selected from the group consisting of them.

[0039] The average particle size of the metal oxide used in component (A) is not particularly limited. For example, as a preferred lower limit, it is preferably 20 nm or more, more preferably 30 nm or more, further preferably 50 nm or more, and even more preferably 100 nm or more. Furthermore, as a preferred upper limit, it is preferably 1000 nm or less, more preferably 800 nm or less, further preferably 500 nm or less, and even more preferably 300 nm or less. Moreover, as a preferred numerical range, it is preferably 20–1000 nm, more preferably 30–500 nm, and even more preferably 50–300 nm. Within this range, the color difference between the appearance color and the center color is more superior, and therefore preferred. Additionally, the average particle size of the metal oxide used in component (A) can also be the average particle size of the metal oxide used in the pigment described later.

[0040] The organic solvent is removed through the heat treatment process. The heating temperature is not particularly limited as long as it is sufficient to remove the organic solvent; for example, 70–150°C is preferred. Furthermore, from the viewpoint of dispersibility, the surface-coated metal oxide obtained in the heat treatment process is preferably subjected to a pulverization process after the heat treatment. Examples of pulverization equipment include, for example, hammer mills, ball mills, sand mills, and jet mills.

[0041] The amount of surface coating treatment in component (A) is not particularly limited. In component (A), a preferred lower limit is, for example, 0.1% by mass (hereinafter referred to as %) or more, more preferably 0.3% or more, and even more preferably 0.5% or more. Furthermore, a preferred upper limit is 10% or less, more preferably 8% or less, and even more preferably 5% or less. Additionally, a preferred numerical range is 0.1 to 10%, more preferably 0.3 to 8%, and even more preferably 0.5 to 5%. Within this range, the color difference between the appearance color and the center color, as well as the makeup's durability, are superior, making it even more preferable.

[0042] In this invention, the content of ingredient (A) is not particularly limited. For example, as a preferred lower limit value relative to the total amount of solid powder cosmetics, it is preferably 1% or more, more preferably 2% or more, and even more preferably 3% or more. Furthermore, as a preferred upper limit value, it is preferably 30% or less, more preferably 20% or less, and even more preferably 15% or less. In addition, as a preferred numerical range, relative to the total amount of solid powder cosmetics, it is preferably 1 to 30%, more preferably 2 to 20%, and even more preferably 3 to 15%. If it is within this range, it is more preferable because the color difference between the appearance color and the center color and the filling and molding properties are better. This content can be an amount used that is 3% or more relative to 100% of the total amount of solid powder cosmetics.

[0043] In this invention, the mass ratio of component (A) relative to the "pigment containing component (A)" contained in the solid powder cosmetic is not particularly limited. For example, as a preferred lower limit, it is preferably 0.2 or more, more preferably 0.5 or more, and even more preferably 0.7 or more. Furthermore, as a preferred upper limit, it is preferably 1 or less. As a numerical range, it is preferably 0.2 to 1, more preferably 0.5 to 1, and even more preferably 0.7 to 1. If it is within this range, it is more preferred because the color difference between the appearance color and the center color and the filling and molding properties are better. When the mass ratio is 1, it can also be expressed as 100% by mass of component (A) in the total amount of pigment. This mass ratio can be the mass part of component (A) relative to 1 part by mass of pigment. This mass ratio can be the mass ratio contained in the pigment or the mass ratio used.

[0044] Furthermore, the "pigment" in the phrase "the mass ratio of component (A) to the 'pigment containing component (A)' contained in the solid powder cosmetic" can be used as a "metal oxide pigment." In other words, it can also be the mass ratio of component (A) to the 'metal oxide pigment containing component (A)' contained in the solid powder cosmetic." A suitable combination of the preferred upper and lower limits of the aforementioned value of "the mass ratio of component (A) to the 'pigment containing component (A)'" can be used. The preferred range for this value is 0.2 to 1, more preferably 0.5 to 1, and even more preferably 0.7 to 1. Additionally, "metal oxide" refers to a surface-coated product containing a metal oxide and component (A).

[0045] Furthermore, in this invention, "pigments other than component (A)" may also be used with component (A). However, from the viewpoint of improving the color difference between the appearance color and the middle color, the powder-gathering ability, the filling and shaping ability, and the cosmetic durability, the mass ratio of component (A) to "pigments containing component (A)" is preferably 0.7 or more, more preferably 0.8 or more, and even more preferably 0.9 or more.

[0046] Here, "pigment" refers to a white or colored powder, regardless of its shape or particle size; any pigment can be used. Examples of pigments include metal oxides, tar pigments, and natural pigments. More specifically, examples include: titanium dioxide, zinc oxide, iron oxide, cerium oxide, aluminum oxide, ultramarine, Prussian blue, chromium oxide, chromium hydroxide, carmine, carbon black, Red 201, Red 202, Red 205, Red 226, Red 228, Orange 203, Orange 204, Blue 404, Yellow 401, etc., or Red 3, Red 104, Red 106, Orange 205, Yellow 4, Yellow 5, Green 3, Blue 1, etc.; zirconium, barium or aluminum lake, carmine acid, shellac acid, carmine, Brazilian rosewood, crocin, etc., and their surface coatings. One or more of the groups consisting of these pigments can be used. Surface-coated materials can be obtained using known methods for surface coating of pigments, or commercially available products can be used.

[0047] Furthermore, in this invention, the content of "pigment other than component (A)" is not particularly limited, and it may not be included in solid powder cosmetics. Moreover, for example, relative to the total amount of the solid powder cosmetic, the combined amount of ["component (A)" and "pigment other than component (A)"] (in other words, the content of "pigment containing component (A)") can be appropriately combined using the preferred upper and lower limits of the aforementioned value of "content of component (A)," preferably 1-30%, more preferably 2-20%, and even more preferably 3-15%. Furthermore, it is preferable to adjust this by the mass ratio of component (A) to "pigment containing component (A)."

[0048] The component (B) used in this invention is a plate-shaped powder with an average particle size of 1 μm or more and less than 80 μm. Here, plate-shaped powder refers to powder with an aspect ratio of 3 or more. As a preferred lower limit, from the viewpoint of the color difference between the appearance color and the intermediate color, powder with an aspect ratio of 10 or more or 20 or more is preferred. As a preferred upper limit, there is no particular limitation; from the viewpoint of the color difference between the appearance color and the intermediate color, powder with an aspect ratio of 100 or less or 95 or less is preferred, more preferably 80, 70, or 60 or less, further preferably 50 or less, and even more preferably 40 or less. In this invention, the aspect ratio can be calculated by dividing the average particle size by the average thickness. Furthermore, the average thickness of the powder can be calculated by measuring the thickness of 10 particles in any field of view using a scanning electron microscope and obtaining the average value.

[0049] The average particle size in component (B) of the present invention is 1 μm or more and less than 80 μm. In particular, as a preferred lower limit, it is preferably 2 μm or more, more preferably 3 μm or more, and even more preferably 5 μm or more. Furthermore, as a preferred upper limit, it is preferably 50 μm or less, more preferably 30 μm or less, and even more preferably 20 μm or less. Moreover, as a preferred numerical range, it is preferably 2 to 50 μm, more preferably 3 to 30 μm, and even more preferably 5 to 20 μm. Within this range, it is even more preferable because of the superior color difference between the appearance color and the center color, better filling and molding properties, and better cosmetic durability.

[0050] The plate-shaped powder used in component (B) of this invention is not particularly limited as long as its average particle size is 1 μm or more and less than 80 μm; plate-shaped powders commonly used in cosmetics can be used. Examples include inorganic powders, organic powders, and composite powders, and one or more of these can be used in combination. Component (B) is not particularly limited, but specifically, examples include: barium sulfate, calcium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, titanium dioxide, zinc oxide, iron oxide, chromium hydroxide, dark blue, ultramarine, red iron oxide, talc, mica, kaolin, sericite, synthetic fluorophlogopite, anhydrous silicate, aluminum silicate, magnesium silicate, magnesium aluminum silicate, calcium silicate, barium silicate, strontium silicate, metal tungstate salts, hydroxyapatite, vermiculite, sepiolite, bentonite, montmorillonite, chloroform, zeolite, aluminum hydroxide, boron nitride, bismuth oxychloride, etc. (inorganic powders), polyamide powders, polyester powders, etc. Polyethylene powder, polypropylene powder, polystyrene powder, polylactic acid powder, polyurethane powder, cellulose powder, silk powder, PET powder, silicone resin powder, acrylic resin powder, starch powder, acyl amino acid powders such as lauroyl lysine, and other organic powders, titanium oxide-coated mica, titanium oxide-coated sericite, titanium oxide-coated talc, zinc oxide-coated mica, zinc oxide-coated sericite, zinc oxide-coated talc, barium sulfate-coated mica, barium sulfate-coated sericite, barium sulfate-coated talc, and other composite powders, may use one or more of the groups composed of them.

[0051] Among these components (B), from the viewpoints of powdering properties, filling and molding properties, and cosmetic durability, inorganic plate-shaped powder is preferred, more preferably one or more of the group consisting of barium sulfate, talc, mica, sericite, synthetic fluorophlogopite, hydroxyapatite, boron nitride and bismuth oxychloride, and even more preferably one or more of the group consisting of barium sulfate, talc, mica, sericite, synthetic fluorophlogopite and boron nitride.

[0052] The plate-shaped powder of component (B) used in this invention can be a plate-shaped powder that has undergone surface coating treatment, and known surface coating treatment methods can be appropriately referred to. As a surface coating agent, there are no particular limitations, but examples include: alkylalkoxysilanes such as triethoxyoctylsilane, organotitanates such as isopropyltriisostearoyl titanate, acyl amino acids or their salts such as disodium N-stearoyl-L-glutamate, fluorinated compounds such as perfluorohexylethyltriethoxysilane, silicone oils such as dimethylpolysiloxane, metallic soaps, higher fatty acids, higher alcohols, ceramides, phospholipids, and other surfactants. One or more of the group consisting of these can be used.

[0053] In this invention, the content of ingredient (B) is not particularly limited. For example, as a preferred lower limit, it is preferably 10% or more, more preferably 20% or more, and even more preferably 30% or more, relative to the total amount of solid powder cosmetics. Furthermore, as a preferred upper limit, it is preferably 65% ​​or less, more preferably 63% or less, and even more preferably 60% or less. As a preferred numerical range, it is preferably 10-65%, more preferably 20-63%, and even more preferably 30-60%. Within this range, it is more preferable due to its superior powder-collecting and filling properties. This content can also be an amount used in a manner that is 10% or more relative to 100% of the total amount of solid powder cosmetics.

[0054] In this invention, the mass ratio (A) / (B) of component (A) relative to component (B) is not particularly limited. For example, as a preferred lower limit, it is preferably 0.05 or more, more preferably 0.08 or more, and even more preferably 0.1 or more. Furthermore, as a preferred upper limit, it is preferably 0.7 or less, more preferably 0.6 or less, even more preferably 0.5 or less, even more preferably 0.45 or less, and still even more preferably 0.4 or less. Moreover, a preferred numerical range is 0.05 to 0.5, more preferably 0.08 to 0.45, and even more preferably 0.1 to 0.4. Within this range, it is more preferable due to better powder absorption. This mass ratio can also be a mass ratio.

[0055] The component (C) used in this invention is a non-volatile oil that is liquid at 25°C and has a boiling point of 260°C or higher under normal pressure. The non-volatile oil that is liquid at 25°C in this invention is not particularly limited to any non-volatile oil commonly used in cosmetics, and examples include: liquid paraffin, heavy liquid isoparaffins, hydrogenated polydecene, polybutene, squalane, squalene, and other hydrocarbon oils; fatty acids such as isostearic acid and oleic acid; higher alcohols such as octyl-dodecyl alcohol and tetradecyl alcohol; isopropyl palmitate, isopropyl myristate, isopropyl stearate, etc. Isopropyl sebacic acid, isobutyl stearate, 2-ethylhexyl stearate, isopropyl isostearate, butyl isostearate, decyl isostearate, lauryl isostearate, isodecanoate isodecanoate, isodecanoate isononanoate, isotriadecyl isononanoate, isonononanoate, pentaerythritol tetraisostearate, pentaerythritol tetraethylhexanoate, dipentaerythritol hexanonanoate, diisostearate malate, neopentyl glycol dioctanoate, propionic acid didecanoate Glycol esters, propylene glycol dioctanoate, glyceryl tris(2-ethylhexanoate), polyglycerol-2 monoisostearate, polyglycerol-2 diisostearate, polyglycerol-6 diisostearate, polyglycerol-2 triisostearate, polyglycerol-2 tetraisostearate, polyglycerol-10 pentaisostearate, polyglycerol-10 ethylhexanoate, polyglycerol-10 decaisostearate, diethyl sebacate, cetyl 2-ethylhexanoate, ethylhexyl palmitate, octyl dodecyl myristate, oleic acid esters, ethyl oleate, N-lauroyl-glutamic acid di(phytosterol / 2-octyl dodecyl) ester, N-lauroyl-glutamic acid di(cholesterol / 2-octyl dodecyl) ester, N-lauroyl sarcosine isopropyl ester, etc.; silicone oils such as dimethyl polysiloxane and alkoxy-modified polysiloxane, etc., can be used in combination, one or more of them. Furthermore, in this invention, the fatty acid can be any one of saturated or unsaturated fatty acids. Additionally, the fatty acid preferably has 16 to 22 carbon atoms, more preferably 16 to 18, and is preferably derived from vegetable oils. Furthermore, the higher alcohol preferably has 6 or more carbon atoms, more preferably 8 to 24 carbon atoms.

[0056] Among these components (C), liquid paraffin and squalane are preferred as hydrocarbon oils, with squalane being more preferred. As ester oils, the following are preferred: isopropyl myristate, isotriadecyl isononanoate, isononyl isononanoate, ethylhexyl palmitate, pentaerythritol tetraisostearate, pentaerythritol tetraethylhexanoate, diisostearate malate, neopentyl glycol dicaprylate, propylene glycol didecanoate, tri-2-ethylhexanoate, polyglycerol-2 monoisostearate, polyglycerol-2 diisostearate, polyglycerol-6 diisostearate, polyglycerol-2 triisostearate, polyglycerol-2 tetraisostearate, polyglycerol-10 pentaisostearate, polyglycerol-10 ethylhexanoate, and polyglycerol... The silicone oil comprises one or more of the following: 10-decadecyl isostearate, diethyl sebacate, and cetyl 2-ethylhexanoate; more preferably, it comprises one or more of the following: isotriadecyl isononanoate, pentaerythritol tetraethylhexanoate, diisostearate malate, neopentyl glycol dioctanoate, propylene glycol didecanoate, triglycerides 2-ethylhexanoate, polyglycerol-2-diisostearate, polyglycerol-2-triisostearate, polyglycerol-2-tetraisostearate, polyglycerol-10-ethylhexanoate, polyglycerol-10-decadecyl isostearate, and cetyl 2-ethylhexanoate. As the silicone oil, dimethyl polysiloxane is preferred, particularly more preferably a dimethyl polysiloxane with a kinematic viscosity of 100 CS or less at 25°C, and even more preferably a dimethyl polysiloxane with a kinematic viscosity of 5 to 20 CS at 25°C.

[0057] The kinematic viscosity (CS) of the oil at 25°C in this instruction manual was measured at 25°C according to the method specified in the Viscosity Test Method 1 (Capillary Viscometer Method) for Quasi-Drug Raw Materials Specifications. Furthermore, the viscosity (mPa·s) in this instruction manual was measured according to the Cosmetic Raw Material Standard / Viscosity Test Method 2 using a Brookfield viscometer, at a specified temperature (e.g., around 25°C).

[0058] The component (C) of the present invention is a non-volatile oil that is liquid at 25°C. Because it has better cosmetic durability, it is preferred to use two or more of the group consisting of hydrocarbon oil, ester oil and silicone oil, and more preferably to use a combination of ester oil and silicone oil.

[0059] When using two or more components (C), for example, the mass ratio of the ester oil to the silicone oil is not particularly limited, but the ratio of (ester oil) to (silicone oil) is preferably 0.5 to 2, more preferably 0.7 to 1.5, and even more preferably 0.8 to 1.2. The mass ratios of ester oil and silicone oil are cited as examples, but the present invention is not limited to these two ratios. The mass ratios of ester oil to hydrocarbon oil (ester oil / hydrocarbon oil) and hydrocarbon oil to silicone oil (hydrocarbon oil / silicone oil) can also be used, preferably 0.5 to 2, more preferably 0.7 to 1.5, and even more preferably 0.8 to 1.2. In the present invention, ester oil and silicone oil are used, and it is particularly preferred to use the mass ratio of the ester oil to the silicone oil in this manner. The upper and lower limits of this mass ratio can also be appropriately combined. The mass ratio can be the mass ratio contained in a solid powder cosmetic or the mass ratio used.

[0060] In this invention, the content of ingredient (C) is not particularly limited. For example, as a preferred lower limit, it is preferably 10% or more, more preferably 15% or more, and even more preferably 18% or more, relative to the total amount of solid powder cosmetics. Furthermore, as a preferred upper limit, it is preferably 30% or less, more preferably 28% or less, and even more preferably 25% or less. Additionally, as a preferred numerical range, it is preferably 10-30%, more preferably 15-28%, and even more preferably 18-25%. Within this range, it is more preferable because of its superior powder-gathering properties, filling and shaping properties, and makeup longevity. This content can also be an amount used in a manner that is 10% or more relative to 100% of the total amount of solid powder cosmetics.

[0061] This invention may also contain an oil in which component (D) is a paste at 25°C. Here, "paste at 25°C" in this invention refers to an oil with a melting point of 30–65°C at 1 atmosphere. Here, in this invention, the melting point can be determined using the third method described in the specifications for quasi-drug raw materials.

[0062] Ingredient (D) is not specifically limited to any ingredient commonly used in cosmetics. Examples include: petrolatum (melting point 59℃), paraffin wax and other hydrocarbon oils; dilinoleic acid diesters such as dilinoleyl diester (melting point 40℃); macadamia nut oil fatty acid phytosterol esters, oleic acid phytosterol esters, hydroxystearic acid cholesterol esters, lauroyl glutamate diesters such as octyldodecyl / phytosterol / behenol esters, and amino acid phytosterol esters. Ester oils such as hydrogenated castor oil stearate, shea butter, hexaglycerol fatty acid ester, decaglycerol fatty acid ester, hexa(hydroxystearic acid / stearic acid / rosin acid) dipentaerythritol fatty acid ester (melting point 37℃), dipentaerythritol fatty acid ester, hydroxystearic acid cholesterol ester, cetyl palmitate, diglyceride adipate mixed fatty acid ester, (caprylic acid / capric acid / myristic acid / stearic acid) triglyceride (melting point 40℃), etc.; silicone oils such as stearyl polydimethylsiloxane, etc., can be used in combination of one or more of them as needed.

[0063] From the viewpoint of cosmetic durability, hydrocarbon oils and / or ester oils are preferred among these ingredients (D). More preferably, one or more of the following groups are selected: petrolatum, dilinoleate, macadamia nut oil fatty acid phytosterol ester, lauroyl glutamate diester, and dipentaerythritol fatty acid ester. Further preferably, one or more of the following groups are selected: petrolatum, dilinoleate, lauroyl glutamate diester, and dipentaerythritol fatty acid ester. Particularly preferred are petrolatum and dipentaerythritol fatty acid ester. One or more of the following groups may be used.

[0064] In this invention, the content of ingredient (D) is not particularly limited. For example, as a preferred lower limit value relative to the total amount of solid powder cosmetics, it is preferably 0.1% or more, more preferably 0.3% or more, and even more preferably 0.5% or more. Furthermore, as a preferred upper limit value, it is preferably 5% or less, more preferably 3% or less, and even more preferably 2% or less. In addition, the preferred numerical range is preferably 0.1% to 5%, more preferably 0.3% to 3%, and even more preferably 0.5% to 2%. If it is within this range, it is more preferred because the makeup lasting power is better. This content can also be the amount used in a manner that is 0.5% or more relative to 100% of the total amount of solid powder cosmetics.

[0065] In addition to the above-mentioned ingredients (A) to (C) and (D) as needed, the solid powder cosmetic of the present invention may appropriately contain any ingredients commonly used in cosmetics, without impairing the effects of the present invention. Examples include powders other than ingredients (A) and (B), surfactants, oily ingredients other than ingredients (C) and (D), water-soluble ingredients, ultraviolet absorbers, moisturizers, anti-fading agents, antioxidants, defoamers, beauty ingredients, preservatives, fragrances, etc., which may be appropriately used to impart various effects.

[0066] The method for manufacturing the solid powder cosmetic of the present invention is not particularly limited and can be manufactured using conventional methods. For example, components (A), (B), and other powders added as needed can be mixed, and components (C), (D), and / or other components added as needed can be added and mixed to obtain the product. In the above steps, before adding component (C), in order to uniformly disperse component (C), (D), and / or other components added as needed, they can also be added after heating (e.g., 80°C, etc.). The mixture obtained above can be filled into a disc-shaped container to obtain the solid powder cosmetic.

[0067] There are no particular limitations on the filling method; for example, dry filling or wet filling can be used. Dry filling can be achieved, for example, by filling an appropriate amount of the cosmetic base manufactured above into a container such as a metal tray and then compressing it. Here, cosmetic base refers to a mixture obtained by uniformly mixing ingredients (A) to (C), ingredients (D) added as needed, and / or other ingredients before filling it into a cosmetic container.

[0068] On the other hand, wet filling can be achieved, for example, by adding a solvent to the cosmetic base manufactured above to form a slurry, filling it into a container, and then removing the solvent. Here, the solvent refers to any oil that can form the cosmetic base into a slurry, regardless of its volatility, non-volatility, or other properties. In this invention, the filling and molding properties are better when using volatile oils, therefore volatile hydrocarbon oils are preferred, and isododecane and / or light liquid isoparaffins are even more preferred. In addition, the "volatility" of the volatile oil is preferably a boiling point of less than 260°C at atmospheric pressure (1 atmosphere).

[0069] From the viewpoint of the color difference between the appearance color and the center color, the filling method of the solid powder cosmetic in this invention is more preferably wet filling. The wet filling method involves mixing the cosmetic base obtained by mixing components (A) to (C), and, if necessary, components (D) and / or other components with a solvent to form a slurry, filling it into a container, and then removing part or all of the solvent.

[0070] The amount of solvent added in the mixture with the cosmetic base is not particularly limited. For example, as a preferred lower limit relative to 100 parts by weight of the cosmetic base, it is preferably 30 parts by weight or more, more preferably 50 parts by weight or more, and even more preferably 60 parts by weight or more. Furthermore, as a preferred upper limit, it is preferably 200 parts by weight or less, more preferably 150 parts by weight or less, and even more preferably 100 parts by weight or less. Moreover, a preferred numerical range is 30 to 200 parts by weight, more preferably 50 to 150 parts by weight, and even more preferably 60 to 100 parts by weight. Within this range, the color difference between the appearance color and the center color is more favorable, and therefore preferred. This amount can be the amount used or the amount added in combination.

[0071] The solid powder cosmetic of the present invention is not particularly limited and can be used in color cosmetics such as foundation, primer, loose powder, concealer, blush, lipstick, eyebrow powder, eyeshadow, and eyeliner, as well as basic cosmetics such as body powder. Among them, foundation, loose powder, blush, eyebrow powder, and eyeshadow are more preferred. One or more of the following can be used:

[0072] The solid powder cosmetic of the present invention preferably has a small color difference between the appearance color and the mid-color, and the ΔE value of the Hunter color system is preferably less than 4.5, more preferably less than 4, further preferably less than 3.5, and even more preferably less than 3. Furthermore, the calculation method for the ΔE value of the Hunter color system is as shown in "Evaluation Item: i. Color difference between appearance color and mid-color" described later.

[0073] The present invention may also be configured as follows.

[0074] [1] A solid powder cosmetic, comprising:

[0075] (A) A metal oxide with a surface coating of polyglycerol-2-tetraisostearate;

[0076] (B) Plate-shaped powders with an average particle size of 1 μm or more and less than 80 μm; and

[0077] (C) A non-volatile oil that is liquid at 25°C.

[0078] [2] According to the solid powder cosmetic of [1], the metal oxide in the component (A) is one or more selected from the group consisting of titanium dioxide, zinc oxide, iron oxide and cerium oxide.

[0079] [3] In the solid powder cosmetic according to [1] or [2], the component (B) is an inorganic plate-shaped powder.

[0080] [4] In any one of [1] to [3], the solid powder cosmetic ingredient (C) is one or more of the group consisting of hydrocarbon oils, ester oils and silicone oils, or a combination of two or more of the group consisting of hydrocarbon oils, ester oils and silicone oils.

[0081] [5] In any one of [1] to [4], the content of component (A) in the solid powder cosmetic is 0.2 to 1 by mass relative to the pigment containing component (A).

[0082] [6] In any one of [1] to [5], the mass ratio of component (A) to component (B) is 0.05 to 0.5.

[0083] [7] The solid powder cosmetic according to any one of [1] to [6] further contains an oil that is in paste form at 25°C, which is component (D).

[0084] [8] A solid powder cosmetic according to any one of [1] to [6] is obtained by adding a solvent to a cosmetic base containing the ingredients (A) to (C) to form a slurry, filling it into a container, and then removing part or all of the solvent.

[0085] [9] A method for manufacturing a solid powder cosmetic, wherein a cosmetic base is mixed with a solvent to form a slurry, which is then filled into a container, and part or all of the solvent is removed, wherein the cosmetic base contains:

[0086] (A) Metal oxides that have undergone surface coating treatment with polyglycerol-2 tetraisostearate;

[0087] (B) Plate-shaped powders with an average particle size of 1 μm or more and less than 80 μm; and

[0088] (C) A non-volatile oil that is liquid at 25°C.

[0089] Example

[0090] The present invention will be further described below with reference to examples, but the present invention is not limited to these examples. The average particle size, aspect ratio, kinematic viscosity, etc. of the following examples can be obtained by the measurement and calculation methods described above (for carrying out the invention).

[0091] Examples 1-13 and Comparative Examples 1-5: Solid Powder Eyeshadow

[0092] Solid powder eyeshadows with the compositions shown in Tables 1 and 2 were prepared using the manufacturing method described below. The following evaluation methods were used to assess (i) color difference between the appearance color and the mid-color, (o) powder pick-up ability, (ha) filling and shaping properties, and (ni) makeup durability. The results were also determined using the following judgment method. The results are also shown in Tables 1 and 2.

[0093] [Table 1]

[0094]

[0095] [Table 2]

[0096]

[0097] Additionally, the red iron oxide, yellow iron oxide, titanium dioxide, and black iron oxide used in the table, which have been surface-coated with polyglycerol-2 tetraisostearate, are pigments. "(A) / pigment" in the table is also referred to as "ingredient (A) / pigment containing ingredient (A)". In this case, "(A) / pigment=1" in the table can also be interpreted as "the content of ingredient (A) in 100% by mass of pigment is 100% by mass". As with "talc (amorphous)" (balance) in the table, powders other than ingredient (A), ingredient (B), and pigments can be used to adjust the solid powder cosmetic to 100% by mass. Furthermore, the "talc (amorphous)" used in this [Example] is not a plate-like powder and is not equivalent to ingredient (B). Furthermore, the compound classified as ingredient (B) used in this [Example] is not equivalent to a pigment.

[0098] The metal oxides used in the examples, which have undergone surface coating treatment with polyglycerol-2 tetraisostearate, can be obtained by the manufacturing method described above (for carrying out the invention). The metal oxides used as raw materials are red iron oxide (average particle size 300 nm), yellow iron oxide (average particle size 800 nm), titanium dioxide (average particle size 250 nm), and black iron oxide (average particle size 300 nm). Furthermore, the average particle size of each of the pigments "red iron oxide, yellow iron oxide, titanium dioxide, and black iron oxide" in the table is the same as the average particle size of their respective metal oxide raw materials.

[0099] In addition, the “2% treatment” in the table, such as “2% treatment of red iron oxide with polyglycerol-2 tetraisostearate”, means that 2% by mass of polyglycerol-2 tetraisostearate (content in component (A)) is included in 100% by mass of “red iron oxide with polyglycerol-2 tetraisostearate”.

[0100] In addition, the table shows that 2% polyglycerol-2-tetraisostearate was used to treat red iron oxide (average particle size 300 nm), 2% polyglycerol-2-tetraisostearate was used to treat yellow iron oxide (average particle size 800 nm), 2% polyglycerol-2-tetraisostearate was used to treat titanium dioxide (average particle size 250 nm), and 2% polyglycerol-2-tetraisostearate was used to treat black iron oxide (average particle size 300 nm).

[0101] (Manufacturing method)

[0102] A: Mix components (1) to (17) and (24) evenly.

[0103] B: Mix ingredients (18) to (23) evenly at 50°C, then add them to A and mix to make a cosmetic base.

[0104] C: Add 60 parts by weight of isododecane to 100 parts by weight of cosmetic base material and mix and knead. Fill the resulting 2.5g mixture into a metal dish container (2.5cm×2cm×0.3cm).

[0105] D: Overlap two 0.02mm thick cellulose papers on the surface of C, then use a pressing film to compress and shape them with a pressure of 2kgf / cm², while simultaneously removing isododecane for 4 seconds, and then dry at 70℃ for 8 hours to obtain solid powder eyeshadow.

[0106] [Evaluation Method 1]

[0107] Evaluation item: I. Color difference between appearance color and mid-tone

[0108] For each sample, the color of the sample surface before use and the color of the sample surface after rubbing it 10 times with a cosmetic patch were measured using a spectrophotometer SE-2000 (Nippon Denshoku Kogyo Co., Ltd.). The ΔE value was calculated using the Hunter color table system, and the judgment was made according to the following four-stage judgment criteria. Furthermore, the values ​​before use are designated as L1, a1, b1, and the values ​​after use are designated as L2, a2, b2. The ΔE value is calculated as ΔE * ab = [(L2 - L1)]. 2 +(a2-a1) 2 +(b2-b1) 2 ] 1 / 2 The calculation is performed using the formula.

[0109] (4-stage judgment criteria)

[0110] (Judgment): (Judgment Criteria)

[0111] ◎(A) :ΔE is less than 3

[0112] ○(B) :ΔE is 3 or more and less than 4

[0113] Δ(C): ΔE is greater than 4 and less than 4.5

[0114] ×(D) :ΔE is 4.5 or higher

[0115] [Evaluation Method 2]

[0116] Evaluation criteria: 1. Powder pickup; 2. Makeup staying power

[0117] For each sample, a usage test was conducted by 10 professional cosmetics evaluation judges: for each item, each member conducted a 5-stage evaluation and scored according to the following evaluation criteria, and the average score of all professional judges was calculated for each sample, and the judgment was made according to the following judgment criteria.

[0118] (Evaluation Criteria)

[0119] Regarding powder pick-up properties, evaluate whether the amount of powder adhering to the fingers when picking up the sample is appropriate.

[0120] ii. Regarding makeup durability, use a sample and conduct 8 hours of normal daily life to evaluate whether the color has faded.

[0121] (Rating): (Evaluation)

[0122] 5: Very good

[0123] 4: Good

[0124] 3: General

[0125] 2: Slightly worse

[0126] 1: Difference

[0127] (Judgment Criteria)

[0128] (Judgment): (Average score)

[0129] ◎(A): 4.0 or above

[0130] ○ (B): 3.5 points or higher but less than 4.0 points

[0131] Δ(C): 2.0 points or higher and less than 3.5 points

[0132] × (D): Less than 2.0 points

[0133] [Evaluation Method 3]

[0134] Evaluation item: ハ. Filler moldability

[0135] For each sample before solvent removal and drying, a rheometer (FUDOH rheometer, manufactured by Rheotech Co., Ltd.) was used to measure the needle penetration hardness (g / cm²) at 25°C under the test conditions (needle diameter 2 mm, speed 2 cm / min, depth 1 mm). The average value of the test number (N) = 3 was calculated, and the following 4-stage judgment criteria were used for judgment.

[0136] (4-stage judgment criteria)

[0137] (Judgment): (Judgment Criteria)

[0138] ◎(A):200g / cm² or more

[0139] ○(B):150g / cm² or more but less than 200g / cm²

[0140] Δ(C): ≥100g / cm² and <150g / cm²

[0141] ×(D) : Less than 100g / cm²

[0142] The results in Tables 1 and 2 show that the solid powder eyeshadow of the present invention exhibits excellent color difference between the appearance color and the mid-tone, powder pickup, filling and shaping properties, and makeup durability. On the other hand, Comparative Example 1, which used a metal oxide without surface coating treatment with polyglycerol-2-tetraisostearate, did not achieve satisfactory results in terms of color difference between the appearance color and the mid-tone, powder pickup, filling and shaping properties, and makeup durability. Furthermore, Comparative Example 2, which added polyglycerol-2-tetraisostearate without surface coating treatment of the metal oxide, also did not achieve satisfactory results in terms of color difference between the appearance color and the mid-tone, powder pickup, filling and shaping properties, and makeup durability. In Comparative Example 3, which underwent surface coating treatment with polyglycerol-2-triisostearate, unsatisfactory results were not achieved in terms of color difference between the appearance color and the mid-tone. In Comparative Example 4, which did not contain plate-shaped powder, unsatisfactory results were obtained in all aspects. In Comparative Example 5, where the average particle size of the plate-shaped powder was 80 μm or more, unsatisfactory results were not achieved in terms of color difference between the appearance color and the mid-tone.

[0143] Example 14: Solid Powder Cosmetics (Blush)

[0144] (Element) (%)

[0145] 1. Mica (plate-like, average particle size 50 μm) 35

[0146] 2. Silicon-treated anhydrous silicic acid / mica (plate-like, average particle size 30μm) 8

[0147] 3. Alkyl polyacrylate (spherical, average particle size 10μm) 5

[0148] 4. Zinc oxide (hexagonal plate, 0.25μm) 5.

[0149] 5. Treatment of red iron oxide with 5% polyglycerol-2-tetraisostearate

[0150] (Average particle size 300nm) 1

[0151] 6. Titanium dioxide treated with 2% polyglycerol-2-tetraisostearate

[0152] (Average particle size 250nm) 3

[0153] 7. Talc (amorphous, average particle size 5μm) Balance

[0154] 8. Vaseline (melting point: 59℃) 2

[0155] 9. Sesquiisostearate sorbitan acid (HLB: 3.7) 4

[0156] 10. Diisostearic acid malate (viscosity at 25℃: 2700 mPa·s) 4

[0157] 11,2-Ethylhexanoate cetyl ester 5

[0158] 12. Ethanol 0.5

[0159] 13. 0.2g of plant-based squalane

[0160] 14. Spices 1

[0161] (Manufacturing method)

[0162] A: Mix components (1) to (7) evenly.

[0163] B: Mix ingredients (8) to (14), heat to 70°C and dissolve, then add to A and mix to make a cosmetic base.

[0164] C: Add 50 parts by weight of isododecane to 100 parts by weight of cosmetic base material and mix and knead. Fill the resulting 2.5g mixture into a metal dish container (2.5cm×2cm×0.3cm).

[0165] D: After overlapping two 0.02 mm thick cellulose papers on the surface of C, the mixture is compressed and molded using a pressure of 2 kgf / cm², while simultaneously removing isododecane for 4 seconds. After drying at 70°C for 8 hours, a solid powder cosmetic (blush) is obtained.

[0166] The solid powder cosmetics (blush) obtained in the above manner are satisfactory in all aspects, including color difference between the appearance color and the mid-color, powder pick-up ability, filling and shaping ability, and makeup longevity.

[0167] Example 15: Solid Powder Cosmetics (Eyeshadow)

[0168] (Element) (%)

[0169] 1. Mica (plate-like, average particle size 50 μm) 30

[0170] 2. Methyl methacrylate crosspolymer (spherical, average particle size 30 μm) 5

[0171] 3. Zinc oxide (hexagonal plate-shaped, average particle size 0.25μm) 5

[0172] 4. Nylon powder (spherical, average particle size 10μm) 2

[0173] 5. Boron nitride (plate shape, average particle size 10μm) 2

[0174] 6. Treatment of red iron oxide with 1% polyglycerol-2-tetraisostearate

[0175] (Average particle size 300nm) 2

[0176] 7. Treatment of black iron oxide with 0.5% polyglycerol-2-tetraisostearate

[0177] (Average particle size 300nm) 3

[0178] 8. Talc (amorphous, average particle size 5μm) Balance

[0179] 9. Diisostearic acid malate (viscosity at 25℃: 2700 mPa·s) 15

[0180] 10. Dimethylpolysiloxane (viscosity at 25℃: 10 mPa·s) 3

[0181] 11. Methylphenyl polysiloxane (viscosity at 25℃: 370 mPa·s) 1

[0182] (Manufacturing method)

[0183] A. Mix components (1) to (8) evenly.

[0184] B. Mix components (9) to (11) evenly.

[0185] C. Add B to A and mix to form a cosmetic base. Add 30 parts by weight of isododecane to 100 parts by weight of the cosmetic base and mix and knead. Fill 2.5g of the mixture into a metal dish container (2.5cm×2cm×0.3cm).

[0186] D. After overlapping two 0.02 mm thick cellulose papers on the surface of C, the mixture is compressed using a pressing machine at 2 kgf / cm², while simultaneously being suction-removed for 4 seconds. After drying at 70°C for 8 hours, a solid powder cosmetic (eyeshadow) is obtained.

[0187] The solid powder cosmetics (eyeshadow) obtained in the above manner are satisfactory in all aspects, including color difference between the appearance color and the mid-color, powder pick-up properties, filling and shaping properties, and makeup longevity.

[0188] Example 16: Solid Powder Cosmetics (Eyeshadow)

[0189] (Element) (%)

[0190] 1. Mica (plate-like, average particle size 50 μm) 30

[0191] 2. Anhydrous silica (spherical, average particle size 10μm) 5

[0192] 3. Zinc oxide (hexagonal plate-shaped, average particle size 0.25μm) 5

[0193] 4. Lauroyl lysine (hexagonal plate-like structure, average particle size 12 μm) 2

[0194] 5. Boron nitride (plate shape, average particle size 10μm) 2

[0195] 6. Treatment of red iron oxide with 5% polyglycerol-2-tetraisostearate

[0196] (Average particle size 300nm) 2

[0197] 7. Treatment of black iron oxide with 5% polyglycerol-2-tetraisostearate

[0198] (Average particle size 300nm) 3

[0199] 8. Talc (amorphous, average particle size 5μm) Balance

[0200] 9. Diisostearic acid malate (viscosity at 25℃: 2700 mPa·s) 15

[0201] 10,2-Ethylhexanoate cetyl ester 3

[0202] 11. Hexa(hydroxystearic acid / stearic acid / rosin acid) dipentaerythritol ester (melting point 37℃) 5

[0203] 12. Tris(2-ethylhexanoate) glyceryl ester 5

[0204] (Manufacturing method)

[0205] A. Mix components (1) to (8) evenly.

[0206] B. Heat and mix components (9) to (12) uniformly at 50°C.

[0207] C. Add B to A and mix to form a cosmetic base. Add 20 parts by weight of isododecane to 100 parts by weight of the cosmetic base and mix and knead. Fill 2.5g of the mixture into a metal tray container (2.5cm×2cm×0.3cm).

[0208] D. After overlapping two 0.02 mm thick cellulose papers on the surface of C, the mixture is compressed using a pressing machine at 2 kgf / cm², while simultaneously being suction-removed for 4 seconds. After drying at 70°C for 8 hours, a solid powder cosmetic (eyeshadow) is obtained.

[0209] The solid powder cosmetics (eyeshadow) obtained in the above manner are satisfactory in all aspects, including color difference between the appearance color and the mid-color, powder pick-up properties, filling and shaping properties, and makeup longevity.

[0210] Example 17: Multicolor solid powder cosmetic (eyeshadow)

[0211] Formula 1

[0212] (Element) (%)

[0213] 1. Mica (plate-like, average particle size 30μm) 15

[0214] 2. Carmine 3

[0215] 3. Red iron oxide coated synthetic phlogopite※5 10

[0216] 4. Yellow iron oxide coated synthetic phlogopite※6 8

[0217] 5. Treatment of red iron oxide with 2% polyglycerol-2-tetraisostearate

[0218] (Average particle size 300nm) 10

[0219] 6. Polyglycerol-2-tetraisostearate 2% treatment of black iron oxide

[0220] (Average particle size 300nm) 10

[0221] 7. Cellulose (spherical average particle size 30μm) ※7 2

[0222] 8. Talc (amorphous, average particle size 5μm) Balance

[0223] 9. Dextrin isostearate※8 1

[0224] 10. Stearyl-based polydimethylsiloxane (melting point 40℃) 2

[0225] 11. Diisostearic acid malate (viscosity at 25℃: 2700 mPa·s) 10

[0226] 12. Dipropylene glycol 3

[0227] ※5: NK-RED (Koken Kogyo Co., Ltd., Japan)

[0228] ※6: NK-YELLOW (Koken Kogyo Co., Ltd., Japan)

[0229] ※7: CELLULO BEADS D-30 (Daito Kasei Corporation)

[0230] ※8: Unifiram HVY (Chiba Flour Milling Co., Ltd.)

[0231] (Manufacturing method)

[0232] A. Mix components (1) to (8) evenly.

[0233] B. Heat and mix components (9) to (12) uniformly at 50°C.

[0234] C. Add B to A, and use the mixture as a cosmetic base. Add 20 parts by mass of isododecane to 100 parts by mass of the cosmetic base and mix and knead to obtain a slurry-like mixture.

[0235] Formula 2

[0236] (Element) (%)

[0237] 1. Mica (plate-like, average particle size 50 μm) 30

[0238] 2. Anhydrous silica (spherical, average particle size 10μm) 5

[0239] 3. Zinc oxide (hexagonal plate-shaped, average particle size 0.25μm) 5

[0240] 4. Lauroyl lysine (hexagonal plate-like structure, average particle size 12 μm) 2

[0241] 5. Boron nitride (plate shape, average particle size 10μm) 2

[0242] 6. Red iron oxide (average particle size 300nm) 1

[0243] 7. Yellow iron oxide (average particle size 800 nm) 1.5

[0244] 8. Titanium oxide-coated synthesis of phlogopite※9 25

[0245] 9. Talc (amorphous, average particle size 5μm) Balance

[0246] 10. Diisostearic acid malate (viscosity at 25℃: 2700 mPa·s) 15

[0247] 11,2-Ethylhexanoate cetyl ester 3

[0248] 12. Hexa(hydroxystearic acid / stearic acid / rosin acid) dipentaerythritol ester (melting point 37℃) 5

[0249] 13. Tris(2-ethylhexanoate) glyceryl ester 5

[0250] ※9: TWINCLE PEARL 410 (manufactured by Koken Corporation, Japan)

[0251] (Manufacturing method)

[0252] A. Mix components (1) to (9) evenly.

[0253] B. Heat and mix components (10) to (13) uniformly at 50°C.

[0254] C. Add B to A, and use the mixture as a cosmetic base. Add 20 parts by mass of isododecane to 100 parts by mass of the cosmetic base and mix and knead to obtain a slurry-like mixture.

[0255] Formula 3

[0256] (Element) (%)

[0257] 1. Mica (plate-like, average particle size 50 μm) 30

[0258] 2. Methyl methacrylate crosspolymer (spherical, average particle size 30 μm) 5

[0259] 3. Zinc oxide (hexagonal plate-shaped, average particle size 0.25μm) 5

[0260] 4. Nylon powder (spherical, average particle size 10μm) 2

[0261] 5. Boron nitride (plate shape, average particle size 10μm) 2

[0262] 6. Black iron oxide (average particle size 300nm) 2

[0263] 7. Red iron oxide (average particle size 300nm) 3

[0264] 8. Talc (amorphous, average particle size 5μm) Balance

[0265] 9. (Polydimethylsiloxane / vinyl polydimethylsiloxane crosspolymer ※10 15)

[0266] 10. Vaseline (melting point: 59℃) 2

[0267] 11. Diphenyl polydimethylsiloxane ※11 5

[0268] 12. Polydimethylsiloxane (kinematic viscosity at 25°C: 10 CS) 10

[0269] ※10: KSG-6 (40% solids, manufactured by Shin-Etsu Chemical Co., Ltd.)

[0270] ※11: KF-54 (manufactured by Shin-Etsu Chemical Industry Co., Ltd.)

[0271] (Manufacturing method)

[0272] A. Mix components (1) to (8) evenly.

[0273] B. Heat and mix components (9) to (12) uniformly at 90°C.

[0274] C. Add B to A, and use the mixture as a cosmetic base. Add 40 parts by weight of dimethyl polysiloxane (kinematic viscosity 6 CS at 25°C) to 100 parts by weight of the cosmetic base and mix and knead to obtain a slurry-like mixture.

[0275] Formula 4

[0276] (Element) (%)

[0277] 1. Mica (plate-like, average particle size 50 μm) 30

[0278] 2. Anhydrous silica (spherical, average particle size 10μm) 5

[0279] 3. Zinc oxide (hexagonal plate-shaped, average particle size 0.25μm) 5

[0280] 4. Lauroyl lysine (hexagonal plate-like structure, average particle size 12 μm) 2

[0281] 5. Boron nitride (plate shape, average particle size 10μm) 2

[0282] 6. Red iron oxide (average particle size 300nm) 1

[0283] 7. Yellow iron oxide (average particle size 800 nm) 1.5

[0284] 8. Titanium oxide-coated borosilicate (Ca / Al) ※12 25

[0285] 9. Talc (amorphous, average particle size 5μm) Balance

[0286] 10. Diisostearic acid malate (viscosity at 25℃: 2700 mPa·s) 15

[0287] 11,2-Ethylhexanoate cetyl ester 3

[0288] 12. Hexa(hydroxystearic acid / stearic acid / rosin acid) dipentaerythritol ester (melting point 37℃) 5

[0289] 13. Tris(2-ethylhexanoate) glyceryl ester 5

[0290] ※12: Meta Shine 1080RR (manufactured by Nippon Sheet Glass Co., Ltd.)

[0291] (Manufacturing method)

[0292] A. Mix components (1) to (9) evenly.

[0293] B. Heat and mix components (10) to (13) uniformly at 50°C.

[0294] C. Add B to A, and use the mixture as a cosmetic base. Add 20 parts by mass of isododecane to 100 parts by mass of the cosmetic base and mix and knead to obtain a slurry-like mixture.

[0295] Formula 5

[0296] (Element) (%)

[0297] 1. Mica (plate-like, average particle size 40 μm) 30

[0298] 2. Anhydrous silica (spherical, average particle size 10μm) 5

[0299] 3. Zinc oxide (hexagonal plate-shaped, average particle size 0.25μm) 5

[0300] 4. Lauroyl lysine (hexagonal plate-like structure, average particle size 12 μm) 2

[0301] 5. Black iron oxide coated with mica alloy ※13 4

[0302] 6. Red iron oxide coated synthetic phlogopite※5 4

[0303] 7. Yellow iron oxide coated synthetic phlogopite※6 5

[0304] 8. Titanium oxide-coated borosilicate (Ca / Al) ※12 25

[0305] 9. Talc (amorphous, average particle size 20μm) Balance

[0306] 10. Sesquiisostearate dehydrated sorbitan ester (melting point: 60°C) ※14 5

[0307] 11. Hexa(hydroxystearic acid / stearic acid / rosin acid) dipentaerythritol ester (melting point 37℃) 5

[0308] 12. Tris(2-ethylhexanoate) glyceryl ester 5

[0309] ※13: NK-BLACK (Koken Kogyo Co., Ltd., Japan)

[0310] ※14: SS-15V (manufactured by Surfactant Industries, Ltd., Japan)

[0311] (Manufacturing method)

[0312] A. Mix components (1) to (9) evenly.

[0313] B. Ingredients (10) to (12) are heated and mixed uniformly at 80°C.

[0314] C. Add B to A, and use the mixture as a cosmetic base. Add 20 parts by mass of isododecane to 100 parts by mass of the cosmetic base and mix and knead to obtain a slurry-like mixture.

[0315] (Filling method)

[0316] 1. Fill the hopper with the paste-like eyeshadows obtained from formulas 1-5. Use a divider to fill the container (divided into 5 sections: Section A: 2.2cm × 4.8cm × 0.5cm, Section B: 2.3cm × 2.4cm × 0.5cm) into each section. Figure 1 Formula 1 is to fill 5g into partition A, and Formulas 2-5 are to fill 2.5g into partition B respectively.

[0317] 2. Two sheets of 0.02 mm thick cellulose paper are overlapped on the surface of the filler obtained in step 1, and the mixture is compressed at 2 kgf / cm². After removing the filler by suction for 4 seconds, it is dried at 70°C for 8 hours to obtain a solid powder cosmetic (eyeshadow).

[0318] The multi-color solid powder cosmetics (eyeshadow) obtained in the above manner are satisfactory in all aspects, including color difference between the appearance color and the middle color, powder pick-up, filling and shaping properties, and makeup longevity.

[0319] Example 18: Solid Powder Cosmetics (Eyeshadow)

[0320] (Element) (%)

[0321] 1. Mica (plate-like, average particle size 50 μm) 30

[0322] 2. Anhydrous silica (spherical, average particle size 10μm) 5

[0323] 3. Zinc oxide (hexagonal plate-shaped, average particle size 0.25μm) 5

[0324] 4. Lauroyl lysine (hexagonal plate-like structure, average particle size 12 μm) 2

[0325] 5. Boron nitride (plate shape, average particle size 10μm) 2

[0326] 6. Treatment of red iron oxide with 5% polyglycerol-2-tetraisostearate

[0327] (Average particle size 300nm) 2

[0328] 7. Treatment of black iron oxide with 5% polyglycerol-2-tetraisostearate

[0329] (Average particle size 300nm) 3

[0330] 8. Alloy mica (plate-like, average particle size 10μm) Balance

[0331] 9. Diisostearic acid malate (viscosity at 25℃: 2700 mPa·s) 15

[0332] 10,2-Ethylhexanoate cetyl ester 3

[0333] 11. Hexa(hydroxystearic acid / stearic acid / rosin acid) dipentaerythritol ester (melting point 37℃) 5

[0334] 12. Tris(2-ethylhexanoate) glyceryl ester 5

[0335] (Manufacturing method)

[0336] A. Mix components (1) to (8) evenly.

[0337] B. Heat and mix components (9) to (12) uniformly at 50°C.

[0338] C. Add B to A and mix to form a cosmetic base. Add 20 parts by weight of isododecane to 100 parts by weight of the cosmetic base and mix and knead. Fill 2.5g of the mixture into a metal tray container (2.5cm×2cm×0.3cm).

[0339] D. After overlapping two 0.02 mm thick cellulose papers on the surface of C, the mixture is compressed using a pressing machine at 2 kgf / cm², while simultaneously being suction-removed for 4 seconds. After drying at 70°C for 8 hours, a solid powder cosmetic (eyeshadow) is obtained.

[0340] The solid powder cosmetics (eyeshadow) obtained in the above manner are satisfactory in all aspects, including color difference between the appearance color and the mid-color, powder pick-up properties, filling and shaping properties, and makeup longevity.

[0341] Example 19: Solid Powder Cosmetics (Eyeshadow)

[0342] (Element) (%)

[0343] 1. Mica (plate-like, average particle size 50 μm) 30

[0344] 2. Anhydrous silica (spherical, average particle size 10μm) 5

[0345] 3. Zinc oxide (hexagonal plate-shaped, average particle size 0.25μm) 5

[0346] 4. Lauroyl lysine (hexagonal plate-like structure, average particle size 12 μm) 2

[0347] 5. Boron nitride (plate shape, average particle size 10μm) 2

[0348] 6. Treatment of red iron oxide with 5% polyglycerol-2-tetraisostearate

[0349] (Average particle size 300nm) 1

[0350] 7. Treatment of black iron oxide with 5% polyglycerol-2-tetraisostearate

[0351] (Average particle size 300nm) 1

[0352] 8. (Fluoride / Hydrogenation / Oxidation) / (Mg / K / Silicon)

[0353] (Plate-shaped, average particle size 8μm) ※15 Balance

[0354] 9. Diisostearic acid malate (viscosity at 25℃: 2700 mPa·s) 15

[0355] 10,2-Ethylhexanoate cetyl ester 3

[0356] 11. Hexahydroxystearic acid / stearic acid / rosin acid

[0357] Dipentaerythritol ester (melting point 37℃) 5

[0358] 12. Tris(2-ethylhexanoate) glyceryl ester 5

[0359] 13. Spices 0.2

[0360] ※15 Microcrystalline Mica MK-200K (Manufactured by Katakura & Co-op Agri)

[0361] (Manufacturing method)

[0362] A. Mix components (1) to (8) evenly.

[0363] B. Heat and mix components (9) to (13) uniformly at 50°C.

[0364] C. Add B to A, and use the mixture as a cosmetic base. Add 20 parts by weight of isododecane to 100 parts by weight of the cosmetic base and mix and knead. Fill 2.5g of the mixture into a metal dish container (2.5cm×2cm×0.3cm).

[0365] D. After overlapping two 0.02 mm thick cellulose papers on the surface of C, the mixture is compressed using a pressing machine at 2 kgf / cm², while simultaneously being suction-removed for 4 seconds. After drying at 70°C for 8 hours, a solid powder cosmetic (eyeshadow) is obtained.

[0366] The solid powder cosmetics (eyeshadow) obtained in the above manner are satisfactory in all aspects, including color difference between the appearance color and the mid-color, powder pick-up properties, filling and shaping properties, and makeup longevity.

[0367] Example 20: Solid Powder Cosmetics (Blush)

[0368] (Element) (%)

[0369] 1. Mica (plate-like, average particle size 30μm) 15

[0370] 2. Red No. 226 3

[0371] 3. Yellow No. 4 1

[0372] 4. Red iron oxide coated with synthetic phlogopite※5 5

[0373] 5. Yellow iron oxide coated synthetic phlogopite※6 8

[0374] 6. Treatment of red iron oxide with 2% polyglycerol-2-tetraisostearate

[0375] (Average particle size 300nm) 10

[0376] 7. 2% polyglycerol-2-tetraisostearate treatment for black iron oxide

[0377] (Average particle size 300nm) 10

[0378] 8. Talc (amorphous, average particle size 5μm) Balance

[0379] 9. Vaseline (melting point: 59℃) 2

[0380] 10. Sesquiisostearate sorbitan (HLB: 3.7) 4

[0381] 11. Diisostearic acid malate (viscosity at 25℃: 2700 mPa·s) 4

[0382] 12,2-Ethylhexanoate cetyl ester 5

[0383] 13. Ethanol 0.5

[0384] 14. Vegetable-derived squalane 0.2

[0385] 15. Spices 1

[0386] (Manufacturing method)

[0387] A. Mix components (1) to (8) evenly.

[0388] B. Heat and mix components (9) to (15) uniformly at 50°C.

[0389] C. Add B to A, and use the mixture as a cosmetic base. Add 20 parts by weight of isododecane to 100 parts by weight of the cosmetic base and mix and knead. Fill 2.5g of the mixture into a metal dish container (2.5cm×2cm×0.3cm).

[0390] D. After overlapping two 0.02 mm thick cellulose papers on the surface of C, the paper is compressed and molded at 2 kgf / cm² using a pressing method. Simultaneously, the paper is suction-removed for 4 seconds and then dried at 70°C for 8 hours to obtain a solid powder cosmetic (blush).

[0391] The solid powder cosmetics (blush) obtained in the above manner are satisfactory in all aspects, including color difference between the appearance color and the mid-color, powder pick-up ability, filling and shaping ability, and makeup longevity.

Claims

1. A solid powder cosmetic, comprising: (A) A metal oxide with a surface coating of polyglycerol-2-tetraisostearate; (B) Plate-shaped powders with an average particle size of 1 μm or more and less than 80 μm; and (C) A non-volatile oil that is liquid at 25°C.

2. The solid powder cosmetic according to claim 1, wherein the metal oxide in component (A) is one or more selected from the group consisting of titanium dioxide, zinc oxide, iron oxide and cerium oxide.

3. The solid powder cosmetic according to claim 1 or 2, wherein component (B) is an inorganic plate-shaped powder.

4. The solid powder cosmetic according to claim 1 or 2, wherein the component (C) is selected from two or more of the group consisting of hydrocarbon oils, ester oils and silicone oils.

5. The solid powder cosmetic according to claim 1 or 2, wherein the mass ratio of component (A) to the pigment containing component (A) is 0.2 to 1.

6. The solid powder cosmetic according to claim 1 or 2, wherein the mass ratio of component (A) to component (B) is 0.05 to 0.

5.

7. The solid powder cosmetic according to claim 1 or 2, further comprising component (D) an oil that is in paste form at 25°C.

8. The solid powder cosmetic according to claim 1 or 2, wherein a slurry is prepared by adding a solvent to a cosmetic base containing the ingredients (A) to (C), and after filling it into a container, part or all of the solvent is removed to obtain the product.

9. A method for manufacturing a solid powder cosmetic, comprising mixing a cosmetic base with a solvent to form a slurry, filling it into a container, and then removing part or all of the solvent, wherein the cosmetic base contains: (A) Metal oxides that have undergone surface coating treatment with polyglycerol-2 tetraisostearate; (B) Plate-shaped powders with an average particle size of 1 μm or more and less than 80 μm; and (C) A non-volatile oil that is liquid at 25°C.

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