JP2023092812A - Powder solid cosmetic - Google Patents

Abstract

To provide a powder solid cosmetic that has a smooth surface after molded and used, has a lasting skin color covering effect, and smoothly spreads, giving a good moist feeling.SOLUTION: A powder solid cosmetic comprises powder comprising particulate titanium oxide, the surface of which is coated with an inorganic surface treatment agent which is oxide or hydroxide of silicon and iron, a silicone oil within a specific viscosity region, a specific ester oil, and spherical powder.SELECTED DRAWING: None

Description

TECHNICAL FIELD The present invention relates to powdery solid cosmetics.

Among makeup cosmetics, powdered cosmetics, which are often used for foundation and face powder, are composed of powder as the main ingredient, and can be used to hide color unevenness such as spots and acne scars, as well as uneven unevenness such as pores and wrinkles. At the same time, there is a demand for concealing covering power and UV protection effect. Generally, in order to impart a high covering effect and a high UV protection function, it is necessary to contain a large amount of an ultraviolet scattering agent. However, when a large amount of fine-particle titanium oxide is contained, problems such as poor dispersion due to self-aggregation, unnatural whiteness, and creaking to the touch tend to occur. Therefore, there has been a demand for quality improvement in all aspects, such as a smooth and spreadable feel, no cohesiveness, and a uniform film as a finish.
For example, as described in Patent Document 1, iron oxide-containing titanium dioxide has been used in sunscreen agents as having good ultraviolet absorption and sufficient transparency to visible light.
In addition, for example, as in Patent Document 2, there is a technique of combining iron oxide-coated titanium oxide having a specific specific surface area and a specific shape with boron nitride as a powder cosmetic that can make dullness and color unevenness of the skin more inconspicuous. Proposed.
In addition, for example, as in Patent Document 3, a specific titanium oxide and a specific hydrophobic iron oxide-coated titanium oxide, boron nitride, and an oil that is liquid at 25°C.

JP-A-6-279026 JP 2016-037469 A JP 2018-070484 A

However, in the techniques of Patent Documents 1 to 3, although unnatural whiteness can be suppressed, in powder solid cosmetics, when a large amount of fine particle titanium oxide is contained, the surface of the solid cosmetics has Uneven spots and caking that the surface hardens and cannot be removed tended to be problems. This phenomenon is highly likely to be due to poor dispersibility, and there have been cases in which spreadability and poor removal, and furthermore, the ultraviolet protection effect of the raw material cannot be sufficiently obtained. As described above, there has been a demand for a treatment agent that improves the dispersibility of the raw material, an optimization of the coated powder, and a combination of ingredients that maximizes the potential of the powder.

As a result of intensive research to solve the above problems, the present inventors have discovered a composite powder in which the surface of fine particles of titanium oxide is coated with oxides or hydroxides of silicon and iron, which are inorganic surface treatment agents, and a specific In preparations containing silicone oils, ester oils, and spherical powders in the viscosity range, the surface of the powdery solid cosmetic after molding is smooth, has a high UV shielding effect, and has a long-lasting skin color covering effect. The inventors have found that it is possible to prepare a preparation that is spreadable and has excellent moist feeling. It was found that the inclusion of silicone oil enhances the dispersibility due to the affinity with the powder, and the inclusion of the ester oil and the spherical powder makes it easy to loosen and imparts a moist feeling. Furthermore, the present inventors have found that it has a high shielding effect in the entire ultraviolet region and has a high protective effect in the blue light region, which is considered to have an adverse effect on the skin in recent years, and has completed the present invention.

That is, the present invention uniformly distributes iron oxide-coated microparticles of titanium oxide on the skin by controlling the dispersed state of microparticles of titanium oxide coated with a specific inorganic surface treatment agent using a combination of specific oils and spherical powder. A powdery solid cosmetic characterized by containing the following components (A) to (D) based on the technical concept of orientation.
(A) Fine particles of titanium oxide having an average particle diameter of 10 to 70 nm surface-coated by the following (a-1) and (a-2), wherein the coating amount of (a-1) is the total mass of (A) 3 to 7% by mass of surface-coated titanium oxide (a-1) iron hydroxide and/or oxide (a-2) silicon hydroxide and/or oxide (B) Provided is a powdery solid cosmetic comprising a non-volatile silicone oil (C) having a kinematic viscosity at 25°C of 6 to 100 mm ² /s and an ester oil (D) which is liquid at 25°C and spherical powder.
According to one embodiment of the present invention, in the powdery solid cosmetic, the processing mass ratio of component (a-1) and component (a-2), (a-2)/(a-1), is 0.0. It can be from 4 to 1.5.
According to one embodiment of the present invention, in the powdery solid cosmetic, the component (A) may be surface-coated with (a-3) aluminum hydroxide and/or oxide.
According to one embodiment of the present invention, the powdery solid cosmetic may be treated with (A-4) a hydrophobizing agent in addition to the component (A).
According to one embodiment of the present invention, in the powdery solid cosmetic, the component (C) may have a molecular weight of 200-1000.
According to one embodiment of the present invention, in the powdery solid cosmetic, the component (D) may contain one or more selected from silica, water-insoluble starch, and water-insoluble cellulose.
According to one embodiment of the present invention, the powdery solid cosmetic may further contain, as component (E), two or more selected from boron nitride, acylated amino acid powder, bismuth oxychloride, synthetic mica, and mica.
According to one embodiment of the present invention, the powdery solid cosmetic may further contain a metal oxide having an average particle size of 0.1 to 5.0 μm as component (F).
According to one embodiment of the present invention, the powdery solid cosmetic can composite the component (A) and/or (F) on the surface of the component (D).
According to one embodiment of the present invention, in the powdery solid cosmetic, the component (A) may be a blue light blocking agent.

The powdery solid cosmetic of the present invention can maintain the skin color covering effect after molding, has a smooth spread and a moist feeling, and has excellent smoothness on the surface of the powdery solid cosmetic after use.
It is excellent in blue light cut effect.

Caking image of powdery solid cosmetic surface of Example 1 (left) and Comparative Example 2 (right) Ratio % of transmittance at 380 to 500 nm of comparative production examples of components (A) and (A) (blue light cut effect)

A preferred embodiment of the invention will now be described in detail. However, the present invention is not limited to the following preferred embodiments, and can be freely modified within the scope of the present invention. In this specification, percentages are indicated by mass unless otherwise specified. In addition, in this specification, when a numerical range is expressed using "-", the range includes numerical values at both ends.
The "average particle size" in the present invention is D50 evaluated using an image analysis method. Select the most suitable measurement method according to the size of the average particle size. Specifically, two methods are used. About 10 mg of a sample is thoroughly dispersed in 1-propanol on a slide glass to obtain a dispersion. A thin film sample is obtained by stretching the dispersion. A thin film of the sample is placed on a mesh for transmission electron microscopy (TEM) measurement with a supporting membrane. The mesh (dry coating film) is set in a transmission electron microscope (S-4800, Hitachi High-Technologies Corporation) and observed to obtain an image of the dry coating film showing individual particles. The image of the dry coating surface image is subjected to image processing for each 1000 particles measured by an image analysis type particle size distribution analyzer (Mac-View, Mountec Co., Ltd.) to measure the particle diameter. Thereby, the average particle diameter D50 of the sample (powder) can be obtained by image analysis of the transmission electron microscope (TEM) image. In addition, the average particle size of powders other than fine-particle titanium oxide is determined by observing the surface state using a scanning electron microscope (manufactured by JEOL Ltd., JSM-7800prime) and using an image analyzer (Luzex AP, manufactured by Nireco Corporation). A value (D50) determined by measurement is used.
As a method for measuring the treatment amount of each metal hydroxide and/or oxide of component (A) and component (E) of the present invention, the treatment amount of each metal contained in the sample (powder) is generally A sample prepared using the technique can be measured by ICP (Inductively Coupled Plasma; ARCOS (Germany Spectro)) emission spectroscopy.

The component (A) used in the present invention comprises (a-1) iron hydroxide and/or oxide and (a-2) average particles surface-coated with silicon hydroxide and/or oxide. It is a surface-coated fine particle titanium oxide having a diameter of 10 to 70 nm and having a coating amount of (a-1) of 3 to 7% by mass with respect to the total mass of (A). The surface coating treatment refers to coating by depositing crystals. In addition, (a-3) the surface is preferably coated with aluminum hydroxide and/or oxide. Hereinafter, component (A) may be referred to as "coated particulate titanium oxide", and the respective treated layers may be referred to as "(a-1)", "(a-2)", and "(a-3)", respectively.

The coated microparticle titanium oxide of component (A) used in the present invention is microparticle titanium oxide having an average particle size of 10 to 70 nm. The shape is not particularly limited, and may be spherical, elliptical, plate-like, granular, needle-like, spindle-like, radial, or the like. It should be noted that the coated particulate titanium oxide may be secondarily compounded with another powder, and the average particle size of the compound powder is not particularly limited.
Furthermore, the average particle size of fine titanium oxide particles is more preferably 30 to 50 nm. Within this range, the transmittance of the fine particles of titanium oxide from the UVA region to the visible light region is reduced, and the UV blocking effect is excellent. preferable.

The coated particulate titanium oxide of component (A) used in the present invention is treated with the following metal hydroxides and/or oxides. Each process will be described below.

The treatment methods for the component (A) inorganic surface treatment agent used in the present invention include, but are not limited to, the following methods. Hydroxides and/or oxides are likely to be mixed depending on the production method, and it is difficult in the present invention to limit one to the other, so any one may be included. and
The method for performing the (a-1) treatment with the hydroxide and/or oxide of iron is not particularly limited, and a known treatment method can be used. For example, as an example, a caustic soda aqueous solution is heated to 30 to 35° C. to disperse powder particles, an aqueous solution containing ferric sulfate is added and stirred, and reacted at 90° C. for about 2 hours. The obtained composite compound is washed with water, neutralized and dried. After pulverization, the raw material particles and iron hydroxide are calcined (for example, about 750 to 900° C. for about 1 to 3 hours).
(a-2) The method for performing the treatment with the hydroxide and/or oxide of silicon is not particularly limited, and a known treatment method can be used. For example, a method in which sodium silicate or the like is added as it is or in the form of an aqueous solution to an aqueous slurry containing raw material particles, and then an acid such as sulfuric acid is added to precipitate silica or a hydrate thereof; , water, or alcohol water mixed solvent, etc.), add an alkoxysilane-based metal coupling agent such as tetraethoxysilane, add an acid or base, or heat silica or its hydroxide. A method of precipitating and the like can be mentioned. Thereafter, the treated powder particles are obtained by washing, filtering, drying, and the like.
The method for the (a-3) treatment with aluminum hydroxide and/or oxide is not particularly limited, and a known treatment method can be used. For example, a method of adding aluminum nitrate, aluminum sulfate, sodium aluminate or the like as it is or in the form of an aqueous solution to an aqueous slurry containing raw material particles, and then adding an acid or an alkali to precipitate an aluminum compound. In addition, the raw material particles are dispersed in a solvent (alcohol, water, alcohol-water mixed solvent, etc.), an aluminum-based metal coupling agent is added, an acid or base is added, or aluminum or hydroxide is added by heating. and a method of precipitating. Thereafter, the treated powder particles are obtained by washing, filtering, drying, and the like.

The coated microparticle titanium oxide of component (A) used in the present invention has the surface of the microparticle titanium oxide particles treated with (a-2), and can be further treated with (a-3). In that case, the coated fine particulate titanium oxide of component (A) used in the present invention may be the surface of particles coated with (a-2) and (a-3), and when used in combination, the order of coating is not particularly limited. The position of (a-1) is not particularly limited, but it can be positioned in the outermost layer of the coated particulate titanium oxide of component (A) used in the present invention. Preferably, it is deposited on the surface.

The treatment amount of (a-1) of component (A) used in the present invention is 3 to 7% by mass in terms of oxide mass with respect to the total mass% of component (A). The treatment amount of (A-2) is preferably 1 to 10 mass% (hereinafter abbreviated as %), more preferably 2 to 9%, more preferably 3 to 8%, in terms of oxide mass with respect to the total inorganic substance amount of component (A). % is more preferred. Within these ranges, the bluishness of the microparticles of titanium oxide can be reduced, and a natural color tone that is more compatible with the skin can be obtained. In addition, it is possible to improve the ultraviolet shielding effect in the UVA region. In particular, the dispersibility of (A) in the cosmetic is improved, and a non-sticky finish can be achieved.

The component (A) of the coated fine particulate titanium oxide used in the present invention is particularly suitable for cosmetics containing this treated component because the presence of (a-2) causes the color development of (a-1) to be reddish. By applying it to the skin, it is presumed that it is easy to create a natural skin color with good complexion, and that the finish that looks natural is improved. By controlling the dispersibility with the ratio of the inorganic surface treatment agent, it is possible to realize a high UV shielding effect and a natural skin color.

Furthermore, the component (A) of the coated fine particulate titanium oxide used in the present invention is more preferably composed of components (a-1) and (a-2) in a mass ratio of (a-2)/(a-1) is preferably 0.1 to 10, more preferably 0.2 to 5, even more preferably 0.4 to 3. When (a-2)/(a-1) is within this range, the color develops beautifully reddish, a natural complexion with good complexion is produced, and component (A) has good dispersibility in cosmetics. As a result, the fine particles of titanium oxide are uniformly arranged on the skin, and the effect of covering the skin color is maintained. It is preferable because it allows

The coated particulate titanium oxide of component (A) used in the present invention is coated particulate titanium oxide that can be further treated with an inorganic surface treatment agent (a-3) aluminum hydroxide and/or oxide. (a-3) can be treated in terms of suppressing the surface activity of fine particles of titanium oxide, adjusting the isoelectric point of the surface, and controlling the dispersibility and surface activity in cosmetics, but the effects are not particularly limited. The treatment amount of (A-3) in component (A) is preferably 0.5 to 10%, more preferably 1 to 8%, and 2 to 5% in terms of oxide mass with respect to the total amount of inorganic substances in component (A). % is more preferred.

Furthermore, for the component (A) coated microparticles of titanium oxide used in the present invention, a range that can be visually evaluated as a natural skin color was set by a panel of 20 experts and evaluated under the following conditions. not a thing After filling the component (A) into a glass cell, tapping was performed 30 times, and the color value L* value, C* value and h value were measured with a spectral color difference meter (SE-7700 manufactured by Nippon Denshoku Industries Co., Ltd.). The color value L* value is the lightness, and the higher the value, the whiter. The color value C* value, the higher the saturation, the brighter the color value. It is a value that changes from red to yellow as the temperature increases. As a result, the hue h value is preferably 65 or more and less than 80, and more preferably 70 or more and less than 75. This width is preferable because it is neither too yellow nor too red, and it is easy to impart a natural skin color and easily achieve a natural finish. Furthermore, it is more preferable that the lightness L* value is 80 or more because the color is less dull. Further, when the chroma C* value is 17 or more and less than 27, the color is not too dark and a natural finish is obtained, which is more preferable.

It is preferable that the coated particulate titanium oxide of component (A) used in the present invention is further treated with (a-4) a hydrophobizing agent. Hereinafter, it may be described as (a-4). The structure of (a-4) is not particularly limited as long as the surface of the powder can be made hydrophobic, and two or more of them may be used in combination for treatment. It can be carried out using a known powder processing method. (A-4) is not particularly limited to either chemical adsorption that is reactive with the powder surface or physical adsorption. In particular, physical adsorption is more preferable. Specifically, for example, a silicone compound, a fluorine compound, a treatment agent having a C 14-24 fatty group, a coupling agent (for example, a silane-based agent such as an alkylalkoxysilane treatment, an aluminum-based agent, a titanium-based agent, etc.), and the like. mentioned.
Examples of silicone compounds include dimethylpolysiloxane, amino-modified silicone, dimethiconol, and methylhydrogenpolysiloxane. Examples of fluorine compounds include perfluoroalkylalkoxysilane treatment and the like. Treatment agents having a structure having an aliphatic group of 14 to 24 carbon atoms include, for example, hydrocarbons, lecithin, hydrogenated phospholipids, peptides, polyurethanes, N-acyl amino acid treatment (e.g., lauroyl lysine treatment, dilauroyl glutamic acid lysine Na treatment, stearoyl glutamic acid 2Na treatment, lauroyl aspartic acid Na treatment), polyethylene oxide, wax, fatty acid, fatty acid ester, fatty acid amide, sphingolipid, polysaccharide fatty acid ester, and the like. Coupling agents include, for example, triethoxycaprylylsilane, isopropyl titanium triisosterate, and the like. In particular, among these, silicone compounds such as dimethylpolysiloxane and dimethiconol, and treating agents having a fatty group having 14 to 24 carbon atoms such as fatty acids such as stearic acid and isostearic acid, N-acylated amino acids, ceramides (for example, ceramide NG) , ceramide 3, etc.) and phospholipids (including hydrogenated phospholipids) are more preferable. The use of (a-4) as described above is more preferable from the viewpoint of improving the effect of the component (A) and also improving the stability.

The treatment amount of (a-4) of component (A) is preferably 0.01% or more, more preferably 1%, and more preferably 2%, when the total amount of inorganic substances in component (A) is 100%. The above is more preferable, 10% or less is preferable, 6% or less is more preferable, and 4% or less is even more preferable. Within this range, (A) can be easily dispersed in the cosmetic, and in particular, the skin color covering effect can be sustained, and the surface smoothness and moistness of the powdered solid cosmetic after use can be improved.

Further, the method of treating the coated fine particles of titanium oxide of component (A) used in the present invention with (a-4) is not particularly limited, but conventionally used for modifying powder used in makeup cosmetics. Any known processing method used for this purpose can be used. For example, a wet method using a solvent, a dry method using a gas phase, or the like can be used. In particular, after mixing with a volatile solvent or oil agent, it is preferable to form a dispersion or dry and pulverize. Specific volatile solvents include alcohol solvents such as isopropyl alcohol, hydrocarbon solvents such as hexane and isododecane, and volatile silicone solvents such as dimethicone. It is preferable because it improves the properties. Specifically, in the case of a wet method, (a-4) is dissolved in a solvent, component (A) is added, and the mixture is uniformly stirred and mixed with a mixer such as a Henschel mixer, kneader, ultramixer, bead mill, or roll mill. Dispersion or wetting is preferred. Furthermore, there are no particular limitations, such as a method in which the solvent is not recovered and incorporated into the cosmetic as a dispersion, or a method in which the solvent is recovered or evaporated, dried, homogenized, and then pulverized. In the case of pulverization in a dry state, the pulverization method includes a device such as a jetmizer, an atomizer, or a grinder for pulverizing ordinary granulated powder. In addition, when processing to form a dispersion, the component (B) used in the present invention described below may be added at the same time.

As a lower limit, the content of the component (A) used in the present invention in the powdery solid cosmetic is preferably 1% or more, more preferably 2% or more, and even more preferably 3% or more. The upper limit is preferably 25% or less, more preferably 20% or less, and even more preferably 15% or less. Within this range, particularly good results can be obtained in terms of the expression of the UV shielding effect, the maintenance of the skin color covering effect, the smoothness of the surface of the powdered solid cosmetic after use, and the moist feeling.

Next, as the component (B) used in the present invention, a non-volatile silicone oil having a kinematic viscosity at 25° C. of 6 to 100 mm ² /s can be contained in the powdery solid cosmetic. Non-volatile means not volatilizing 50% or more when left at room temperature of 25° C. for 24 hours. Examples of silicone oil include, but are not limited to, dimethylpolysiloxane, phenyl-modified polysiloxane (eg, methylphenylpolysiloxane), and the like. One or two or more of these can be appropriately selected and used.

Specific commercial products of dimethylpolysiloxane include KF-96 series such as KF-96A-6CS, KF-96-10CS, KF-96-20CS, and KF-96-100CS (manufactured by Shin-Etsu Chemical Co., Ltd.), Examples include SH200C FLUID 6CS (manufactured by Toray Industries, Inc.), but the present invention is not limited thereto, and one or more of these can be used.
Commercially available phenyl-modified polysiloxanes include, for example, diphenylsiloxyphenyl trimethicone (eg, commercially available product: KF-56 (methylphenylpolysiloxane), etc.) (kinematic viscosity: 15 mm ² /s). It is not limited and may be produced by a known production method. These 1 type(s) or 2 or more types can be used.
Furthermore, among these, dimethylpolysiloxane and/or methylphenylpolysiloxane (preferably the above-mentioned diphenylsiloxyphenyl trimethicone, etc.) can be used because smooth spreadability and better dispersibility of component (A) can be obtained. more preferred. Among the kinematic viscosity at 25° C. of 6 to 100 mm ² /s, the kinematic viscosity of 6 to 50 mm ² /s is more preferable, and 6 to 20 mm ² /s is even more preferable. Within this range, the skin color covering effect lasts longer, smooth spreadability is obtained, and the surface smoothness of the powdered solid cosmetic after use is more preferable.

The content of the component (B) used in the present invention is not particularly limited as long as it exhibits the effect of the present invention, but the lower limit is preferably 1% or more, more preferably 3% or more. , 4% or more. Also, the upper limit is preferably 20% or less, more preferably 15% or less, and even more preferably 10% or less. This range is more preferable from the viewpoint of smoother spreadability and dispersibility of the component (A).

The ester oil that is liquid at 25°C, which is the component (C) used in the present invention, is not particularly limited, and any ester oil that is liquid at 25°C and can be used in powdery solid cosmetics and external skin preparations can be used. can also be used. The term “liquid at 25° C.” is not particularly limited in terms of viscosity as long as it has fluidity when left standing. The ester oil is not particularly limited in its production method, but examples thereof include oils produced by reaction of fatty acids and alcohols. Regardless of the origin of animal oil, vegetable oil, synthetic oil, etc., the following ingredients are exemplified. Specifically, for example, jojoba oil, cetyl 2-ethylhexanoate, isononyl isononanoate, isotridecyl isononanoate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, isotridecyl isononanoate, ethyl oleate, tri-2-ethyl Glyceryl hexanoate, propylene glycol dicaprate, neopentyl glycol dicaprate, polyglyceryl-2 triisostearate, glyceryl tribehenate, diisostearyl malate, ethylhexyldimethyl p-aminobenzoate, ethylhexyl salicylate, ethylhexyl methoxycinnamate, acetic acid Examples include tocopherol, olive oil, castor oil, mink oil, macadamia nut oil, meadowfoam oil, rosehip oil, rice bran oil, avocado oil and the like.

The component (C) used in the present invention is preferably an ester oil having a molecular weight of 200 to 1000, which can improve spreadability without feeling burdensome. Examples of those having a molecular weight of 200 to 1000 include propylene glycol dicaprate (molecular weight 384.6), propylene glycol dicaprylate (molecular weight 328.5), neopentyl glycol dicaprate (molecular weight 412.6), isononyl isononanoate (molecular weight 284.48), isotridecyl isononanoate (molecular weight 340.6), cetyl 2-ethylhexanoate (molecular weight 396.7), glyceryl tri-2-ethylhexanoate (molecular weight 470.7), polyglyceryl-2 triisostearate (molecular weight 965.6), tri(caprylic-capric acid) glyceryl (molecular weight 464.6), 2-ethylhexyl hydroxystearate (molecular weight 412.7), neopentyl glycol dicaprate (molecular weight 412.6), dimalate isostearyl (molecular weight 639), ethylhexyl methoxycinnamate (molecular weight 290.4) and the like. These can be used alone or in combination of two or more. Cetyl 2-ethylhexanoate, propylene glycol dicaprylate, and isotridecyl isononanoate are particularly preferred because they exhibit particularly excellent effects in smooth spreadability. For example, commercially available products such as CETINOL SN-1 (manufactured by BASF), Nikkor PDD (manufactured by Nippon Surfactant Kogyo Co., Ltd.), and Salacos 913 (manufactured by Nisshin Oillio Group) can be used.

The content of the component (C) liquid ester oil at 25°C used in the present invention is not particularly limited, but the lower limit is preferably 0.1% or more, more preferably 2% or more, and even more preferably 3% or more. The upper limit is preferably 20%, more preferably 15% or less, even more preferably 10% or less. Within this range, a preparation with a long-lasting skin color covering effect, smooth spreadability, and excellent moist feeling can be obtained.

The present invention contains component (D) spherical powder. In the present invention, a spherical shape includes not only a true spherical shape but also a substantially spherical shape, an ellipsoidal shape, a pseudo-spherical shape, etc., and the major axis/minor axis ratio is preferably 1.5/1 to 1/1, more preferably 1. .2/1 to 1/1. The spherical powder of component (D) may have a smooth surface, may have holes on the surface, or may have fine irregularities on the surface. The spherical powder of component (D) is not particularly limited in its composition, and is not particularly limited as long as it is a powder that is usually used in powdery solid cosmetics, such as inorganic powders, organic powders, and pigment powders. and composite powders. Specifically, organic powders such as silicone powder, nylon powder, cellulose powder, polymethyl methacrylate powder, polystyrene powder, urethane powder, inorganic powders such as silica and magnesium silicate, hollow silica, glass balloons, Hollow powders such as (methyl methacrylate/acrylonitrile) copolymers, composite powders such as the above organic powders, inorganic powders and hollow powders, etc., and one or more of these may be used. can be done. In particular, silica, water-insoluble starch, and water-insoluble cellulose are particularly preferred from the standpoint of maintaining skin color covering effect and spreading smoothly. The term "water-insoluble" means that the transparency of an aqueous solution tends to decrease when added to water at 1.0%. The water-insoluble starch or water-insoluble cellulose is preferably a polymer starting from a natural and/or plant-derived polymer.

Among the components (D) used in the present invention, one or more selected from, for example, cellulose powder and starch powder, which are organic powders derived from nature or plants, and silica, which is an inorganic powder, is used as a skin color cover. It is more preferable in terms of persistence of effect, smooth spreadability, and smoothness of the surface of the powdery solid cosmetic after use. Among cellulose powders, crystalline cellulose powder is preferred. Among starch powders, crosslinked or non-crosslinked corn-derived starch powder, wheat-derived starch powder, rice-derived starch powder, and powders of chemically modified products having these skeletons (e.g., hydroxypropyl starch, octenyl succinic acid corn starch salts, etc.), metal oxide-coated starches (for example, titanium oxide-coated cornstarch, etc.) powders, etc., or two or more selected from these are preferred. More preferred is the hydrophobized component (D) treated with the surface treating agent (a-4) described as the surface treating agent for the component (A).

The content of component (D) in the present invention is not particularly limited, but the upper limit is preferably 25% or less, more preferably 20% or less, and even more preferably 15% or less. Moreover, the lower limit is preferably 5% or more, preferably 7% or more, and more preferably 10% or more. This range is more preferable in terms of smooth spreadability and superior smoothness of the surface of the powdery solid cosmetic after use.

The average particle size of component (D) in the present invention is not particularly limited, but the lower limit is preferably 0.1 μm or more, more preferably 1 μm or more, and even more preferably 5 μm or more. The upper limit is preferably 40 µm or less, more preferably 30 µm or less, and even more preferably 20 µm or less. Within this range, the effect of covering the skin color is maintained, the smooth spread is achieved, and the smoothness of the surface of the powdered solid cosmetic after use is more excellent, which is more preferable.

Furthermore, the present invention may contain plate-like powder having excellent lubricity as component (E). Specifically, two or more selected from boron nitride, acylated amino acid powder, bismuth oxychloride, synthetic mica, and mica can be contained. The shape of these powders is not particularly limited, but plate-like powders having an aspect ratio of 30 or more are preferable. Further, the average particle size is also not particularly limited, but the average particle size is preferably 1 to 50 μm, more preferably 3 to 40 μm, and even more preferably 5 to 30 μm. Examples of specific commercial products of boron nitride include CCS102-JA BORON NITRIDE POWDER (manufactured by Momentive), SHP-3 (manufactured by Mizushima Ferroalloy Co., Ltd.), SHP-6 (manufactured by Mizushima Ferroalloy Co., Ltd.), and the like. be able to. Acylated amino acid powders include Amihope LL (manufactured by Ajinomoto Co., Inc.). As bismuth oxychloride, commercially available products such as PEARL-GLO UVR (manufactured by Engelhard) and BIJU ULTRA UFC (manufactured by BASF) can be used. Further, the synthetic mica includes synthetic phlogopite or synthetic mica obtained by intercalation such as (fluorination/hydroxylation/oxidation)/(Mg/K/silicon). Specifically, NK-10G (manufactured by Nihon Koken), NK-20G (manufactured by Nihon Koken), PDM-10L (manufactured by Topy Industries), PDM-20L (manufactured by Topy Industries), PDM Commercially available products such as -40L (manufactured by Topy Industries, Ltd.) and TLF-64 (manufactured by Topy Industries, Ltd.) can be used. As mica, commercially available products such as MICA POWDER Y-2300 (manufactured by Yamaguchi Mica) and MICA POWDER Y-3000 (manufactured by Yamaguchi Mica) can be used. Further, it is preferable that each component (E) used in the present invention is surface-treated with a generally known surface-treating agent such as silicone compounds, fatty acid metal salts, fluorine compounds and surfactants. Among them, when the one surface-treated with a hydrophobizing surface treatment agent is used, the dispersibility of the metal oxide in the powdery solid cosmetic is improved, the skin color covering effect is maintained, the smooth spread is achieved, and the powdery solid cosmetic after use is used. It is preferable in that it can improve the smoothness and moist feeling of the material surface.

The content of component (E) used in the present invention is not particularly limited, but the lower limit is preferably 5% or more, preferably 10% or more, and more preferably 15% or more. Moreover, the upper limit is preferably 30% or less, more preferably 25% or less, and even more preferably 20% or less. Within this range, smooth spreadability, smoothness of the surface of the powdered solid cosmetic after use, and excellent moist feeling are more preferable.

The powdery solid cosmetic of the present invention may further contain a metal oxide having an average particle size of 0.1 to 5.0 μm as component (F). Among metal oxides, it is more preferable to contain one or more selected from titanium oxide, zinc oxide and iron oxide, and the shape of the metal oxide is preferably powder. In a more preferred embodiment, one or more metal oxides selected from titanium oxide, zinc oxide and iron oxide having an average particle size of 0.1 to 5.0 μm may be contained as component (F). . When the average particle size is within this range, it is more preferable because the skin color covering effect is sustained, the smooth spread is achieved, and the smoothness of the surface of the powdery solid cosmetic after use is excellent. The shape of component (F) is not particularly limited, such as spherical, plate-like, needle-like, or spindle-like, and the particle structure such as porous or non-porous.

Specific commercial products that can be used as component (F) include, for example, MP-18, MP-701, MP-1133, MP-40, MP-100, etc., or composite powders thereof (manufactured by Tayca Co., Ltd. ); MKR-1 (manufactured by Sakai Chemical Industry Co., Ltd.); SYMPHOLIGHT series (manufactured by JGC Catalysts and Chemicals Co., Ltd.); RONAELAIR BLANCSEALER (manufactured by Merck Performance Materials Co., Ltd.); ZnO-CX (manufactured by Sumitomo Osaka Cement Co., Ltd.); ST series, TAROX series (manufactured by Titan Kogyo Co., Ltd.), etc., but not limited thereto. Moreover, the component (F) may be produced by a known production method, and is not particularly limited.

When the component (F) used in the present invention is titanium oxide or zinc oxide, it is preferable that the surface is further coated with iron oxide or hydroxide. The component (F) used in the present invention may be coated with oxides or hydroxides of iron, oxides or hydroxides of silicon, oxides or hydroxides of aluminum as respective layers.

When component (F) is further coated with an iron oxide or hydroxide, the coating amount in component (F) is not particularly limited, but from the viewpoint of natural covering power, , A preferable lower limit is preferably 0.5% or more, more preferably 0.6% or more, still more preferably 0.7% or more, and a preferable upper limit is 5% or less, more preferably 3.5% or less, more preferably 3%. In the present invention, component (F) can be used alone or in combination of two or more, if necessary.

The average particle size of the component (F) in the present invention has a lower limit of 0.1 µm or more, more preferably 0.15 µm or more, and still more preferably 0.2 µm or more. It is 0 μm or less, more preferably 3.0 μm or less, and even more preferably 1.0 μm or less. Within this range, the effect of covering the skin bumps naturally is superior. Further, when the average particle size is 0.25 to 3.0 μm, it is more preferable because the skin color covering effect can be maintained and the smoothness effect of the powdery solid cosmetic surface after use can be easily adjusted.

The content of component (F) in the powdery solid cosmetic of the present invention is not particularly limited, but the lower limit is preferably 1% or more, more preferably 5%, based on the total amount (100% by mass) of the powdery solid cosmetic. % or more, more preferably 7% or more, and a suitable upper limit is preferably 20% or less, more preferably 15% or less, and still more preferably 12% or less. Within this range, the effect of covering the skin color is maintained, smooth spreadability, smoothness of the surface of the powdery solid cosmetic after use, and excellent moist feeling are obtained, which is preferable.

Component (F) used in the present invention is more preferably in a plate-like form, and component (F) itself may be plate-like, or mica, synthetic mica, glass, silica, alumina such as component (E) may be used. It may be in the form of a composite plate-like powder in which the component (F) is adsorbed on the surface of a plate-like matrix such as, or may be composited with the surface of the component (D). Furthermore, the component (A) and the component (D) may be combined, or the component (A) and the component (F) may be combined with the component (D) at the same time. The method of compositing may be either encapsulation or compositing with an outer layer, and is not particularly limited.
Further, it is preferable that each component (F) used in the present invention is surface-treated with a generally known surface-treating agent such as silicone compounds, fatty acid metal salts, fluorine compounds and surfactants. Among them, when the one surface-treated with a hydrophobizing surface treatment agent is used, the dispersibility of the metal oxide in the powdery solid cosmetic is improved, the skin color covering effect is maintained, the smooth spread is achieved, and the powdery solid cosmetic after use is used. It is preferable in that it can improve the smoothness and moist feeling of the material surface. In the powdery solid cosmetic of the present invention, for example, component (F) treated with a silicone compound and/or a surface treatment agent having a fatty group having 16 to 24 carbon atoms (also referred to as a surface treatment compound) is preferred. used for Specifically, (a-4) can be coated in the same manner as component (A).

The powdery solid cosmetic of the present invention may contain other optional ingredients in addition to the above-described ingredients, depending on the purpose, within the range that does not impair the effects of the present invention. For example, oily ingredients, pigments, pH adjusters, moisturizers, thickeners, surfactants, dispersants, stabilizers, colorants, preservatives, antioxidants, sequestering agents, astringents, antiphlogistic agents, ultraviolet rays Examples include absorbents, fragrances, and other powders.

The method for producing the powdery solid cosmetic of the present invention is not particularly limited, but a known method for producing a solid powdery cosmetic can be applied. As the method for producing the powdery solid cosmetic of the present invention, it is preferable to use a dry molding method and a wet molding method. The dry molding method is, specifically, a method of mixing powder and an oil solution and compressing and molding the mixture into a container. The wet molding method is a wet molding method including mixing powder, oil and solvent in any order. The solvent can be added at any time, is a component that can be used in the production of powdered solid cosmetics, and can be either volatile or non-volatile. If it is volatile, it is preferable to evaporate it after molding, and if it is non-volatile, when the molding surface is rubbed at the time of use, an appropriate amount that can be applied to the skin can be obtained. It may be molded as it is or either.

Examples of applications of the powdery solid cosmetics of the present invention include make-up cosmetics (for example, foundation, white powder, control color, sunscreen cosmetics, cheek color, etc.), body cosmetics, and the like. can. Of these, since the use of the present invention can provide a natural finish, foundation, white powder, control color, sunscreen cosmetics, etc. are preferred, and white powder and foundation are more preferred.

The present technology will be described in more detail below with reference to examples, comparative examples, and the like. In addition, these do not limit this invention at all.

Table 1 shows the evaluation items and the evaluation results of the fine particle titanium oxide powders of (A) Production Examples 1 to 11 and Comparative Production Examples 1 to 8 as the material of component (A). Table 1 also shows the shape and form (size, treatment, etc.) of the coated microparticle titanium oxide powder.
The average particle diameter D50 of the fine-particle titanium oxide powder was measured by the method of measuring the average particle diameter D50 and the method of measuring the aspect ratio by the image analysis method of the transmission electron microscope image described above. The processing amount % was measured by ICP analysis.

Production method of component (A) production examples 1 to 11: (precipitation method “A”)
An aqueous solution of sodium silicate is added to the strongly acidic titania sol of fine particle titanium oxide to form hydrous silica on the surface of the fine particle titanium oxide. In the case of aluminum hydroxide coating, an aqueous solution containing aluminum hydroxide was added, and then acid was added to partially precipitate the aluminum hydroxide compound, resulting in incomplete treatment, followed by dry pulverization. The surface of the coated particulate titanium oxide powder treated with hydrous silica and/or aluminum hydroxide was further treated with iron hydroxide. An aqueous solution containing a ferric sulfate solution was added to the coated fine titanium oxide powder, and the mixture was stirred and reacted at 90° C. for about 2 hours. The resulting coated powder was washed with water, neutralized, and dried. After pulverization, the powder was fired in an electric furnace at a firing temperature of 750 to 900° C. for 2 to 3 hours, and then sieved to obtain the component (A) coated particulate titanium oxide powder of Production Examples 1 to 11.

Production method of comparative production example 1 of component (A): (sintering method "B")
0.01×0.1 μm of ultrafine iron oxide FeOOH is added to the surface of the coated fine particle titanium oxide powder treated with the hydrous silica (optionally, and aluminum hydroxide), finely pulverized, mixed, and fired. After firing in an electric furnace at a temperature of 750 to 900° C. for 2 to 3 hours, the mixture was pulverized and sieved to obtain Comparative Production Example 1 of Component (A).

Comparative Production Example 2 for Component (A): (Production method: iron doping "C") TTO-F-2 (manufactured by Ishihara Sangyo Co., Ltd.) treated with 5% dimethicone.

Production methods of Comparative Production Examples 3 to 8 of component (A):
Component (A) was prepared according to the production methods of Production Examples 1 to 11, changing the treatment layer appropriately as shown in Table 1.

[Evaluation method: Blue light cut effect]
The blue light cutting effect of the coated fine particulate titanium oxide of component (A) used in the present invention was evaluated under the following conditions. (See Figure 2).
FIG. 2 shows the measured transmittance for each wavelength of 2, 4, 5 and 6 of component (A). From the transmittance, the blue light cut function (380 to 500 nm shielding rate) was calculated by (100-transmittance=shielding rate). A sample of component (A) was suspended in IPA (isopropyl alcohol) to a concentration of 20% and dispersed by Despa. A coating film was drawn on a quartz plate with a 12.5 μm doctor blade, and after drying, the transmittance was measured using an integrating sphere UV-2600 (UV-VIS SPECTROPHOTOMETER) (manufactured by Shimadzu Corporation).

Regarding the blue light cutting effect of the component (A), it was confirmed that the lower the transmittance, the higher the blue light cutting effect, and that all the components (A) had a high effect.

[Evaluation method: dispersibility]
(A) The powders of Production Examples 1 to 11 and Comparative Production Examples 1 to 8 were added to talc JA-46R (manufactured by Asada Flour Milling Co., Ltd.) at a ratio of 1:9, stirred for 10 minutes with a super mixer, and then pulverized with an atomizer twice. 0.5 g was applied to a 5×5 cm area on black artificial leather with a brush, and the state of powder dispersion was visually evaluated.
〔criterion〕:
A: Aggregates cannot be visually confirmed.
◯: Only 1 to 3 aggregates were visually observed. Δ: 4 or more aggregates were observed.
x: 10 or more aggregates are observed.

[Evaluation method: natural finish]
The natural finish of the coated fine particulate titanium oxide of component (A) used in the present invention was evaluated under the following conditions. First, after filling the powder into a glass cell, tapping was performed 30 times. h values were measured. Evaluation criteria are shown below.

〔Evaluation criteria〕:
(evaluation result): (score)
L* value of 80 or more and less than 85: 3 points L* value of 85 or more and less than 90: 2 points L* value of 75 or more and less than 80, 90 or more and less than 95: 1 point L* value of less than 70, 95 or more: 0 points

C* value is 20 or more and less than 23: 3 points C* value is 17 or more and less than 20, 23 or more and less than 27: 2 points C* value is 14 or more and less than 17, 27 or more and less than 30: 1 point C* value is less than 14, 30 or more: 0 points

h value is 70 or more and less than 75: 3 points h value is 65 or more and less than 70, 75 or more and less than 80: 2 points h value is 60 or more and less than 65, 80 or more and less than 85: 1 point h value is less than 60, 85 or more: 0 point

〔criterion〕:
(Average score): (judgment)
7 points or more: ◎
6 points: ○
4-5 points: △
3 points or less: ×

From Table 1, the coated microparticle titanium oxides of Component (A) Production Examples 1 to 11 were excellent in natural finish. In addition, in terms of blue light cut effect and dispersibility, there were no Δs, and in particular, Component (A) Production Examples 3 to 8 were the best in all items. On the other hand, in Comparative Production Example 1 of (A), which was prepared using the sintering method (manufacturing method B), it was difficult to uniformly sinter (A-1), so excessive red color developed and natural A good skin color was not obtained, and (A-1) was not treated uniformly, resulting in poor dispersibility. In addition, in Comparative Production Example 2, which was prepared using an iron oxide dope (manufacturing method C), the iron oxide was dull reddish-black, a natural skin color could not be obtained, and the dispersibility was poor because there was no (a-1) on the surface. rice field. In Comparative Production Example 3, (a-2) is not treated, so (a-1) develops a yellow color, resulting in a yellowish finish. there were. In Comparative Production Examples 4, 5, and 6, there is a bluish color due to the fact that (a-1) is not treated, and it is not a natural skin color, and the blue light cut effect is reduced and the spread without feeling of burden is reduced. It was also of low quality. (A) Comparative Production Example 7 did not give a natural skin color due to excessive red color development due to excessive treatment. Comparative Production Example 8 showed a decrease in dispersibility due to the absence of (a-2), and tended to be inferior in natural skin color due to yellowness.

<Examples 1 to 25, Comparative Examples 1 to 9: Powder solid cosmetics (powder foundation)>
Powder foundations having the compositions shown in Tables 3 to 5 were prepared according to the manufacturing method described below. The powder foundation thus obtained was evaluated according to the following evaluation methods: "a. persistence of skin color covering effect", "b. smooth spreadability", "c. smoothness of surface of powdery solid cosmetic after use", and "ii. Moist feeling" was evaluated.

※１：ＭＺＹ５０５Ｓ（テイカ社製）
※２：ＭＰＹ－１００Ｍ（テイカ社製）
※３：ＸＺ－３００Ｆ－ＬＰ（堺化学工業社製）
※４：ＸＺ－３０００Ｆ（堺化学工業社製）
※５：Ｒ－５１６ＣＳ（チタン工業社製）をリン脂質処理０．２％
※６：ＬＬ－１００ＣＳ（チタン工業社製）をリン脂質処理０．２％
※７：ＡＢＬ－２０５ＣＳ（チタン工業社製）をリン脂質処理０．２％
※８：ＳＡ－ＴＡ－１３Ｒ（三好化成工業社製）
※９：ジメチコン２％処理セリサイトＦＳＥ
※１０：ミクロマイカ ＭＫ－３００Ｋ（片倉コープアグリ社製)
※１１：Ｙ－２３００ＷＡ３（ヤマグチマイカ社製）
※１３：ＣＣＳ１０２-ＪＡ ＢＯＲＯＮ ＮＩＴＲＩＤＥ ＰＯＷＤＥＲ（モメンティブ社製）
※１４：ＰＥＡＲＬ－ＧＬＯ ＵＶＲ（サンケミカル社製）
※１５：アミホープ ＬＬ（味の素社製）
※１６：（ジメチコン／ビニルジメチコン）クロスポリマー２％処理

*1: MZY505S (manufactured by Tayca)
*2: MPY-100M (manufactured by Tayca)
*3: XZ-300F-LP (manufactured by Sakai Chemical Industry Co., Ltd.)
*4: XZ-3000F (manufactured by Sakai Chemical Industry Co., Ltd.)
*5: R-516CS (manufactured by Titan Kogyo Co., Ltd.) treated with 0.2% phospholipid
*6: LL-100CS (manufactured by Titan Kogyo Co., Ltd.) treated with 0.2% phospholipid
* 7: ABL-205CS (manufactured by Titan Kogyo Co., Ltd.) treated with 0.2% phospholipid
*8: SA-TA-13R (manufactured by Miyoshi Kasei Co., Ltd.)
*9: Sericite FSE treated with 2% dimethicone
*10: Micromica MK-300K (manufactured by Katakura Co-op Aguri)
*11: Y-2300WA3 (manufactured by Yamaguchi Maika)
*13: CCS102-JA BORON NITRIDE POWDER (manufactured by Momentive)
*14: PEARL-GLO UVR (manufactured by Sun Chemical Co., Ltd.)
*15: Amihope LL (manufactured by Ajinomoto Co., Inc.)
*16: (Dimethicone/vinyl dimethicone) crosspolymer 2% treatment

※１２：ＰＤＭ－１０Ｓ（トピー工業社製）
※１７：シリコンＫＳＧ－１６（信越化学工業社製）

*12: PDM-10S (manufactured by Topy Industries, Ltd.)
*17: Silicon KSG-16 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Manufacturing method) (Tables 3 to 5: Only those that are contained shall be added.)
A. Ingredients (1) to (34) are uniformly mixed.
B. (35) to (43) are uniformly mixed.
C. Add B to A and mix uniformly.
D. E. Add 30 parts of isododecane to C to obtain a slurry. D was poured into a container, compression molded, and dried for 8 hours to obtain a solid powder foundation.

Evaluation method: “A. Sustained skin color covering effect”
Twenty female models in their twenties were evaluated. Samples were filled into 3 x 4.5 cm resin pans and rubbed with a mat to apply 10 mg to the skin and visually evaluated for uniformity and color after 8 hours. Five professional evaluators evaluated the "durability of the skin color covering effect" according to the following evaluation criteria into 5 grades, assigned a score to each sample, and further evaluated the average score of all the panels according to the following evaluation criteria.
Evaluation criteria “sustained skin color cover effect”:
[Evaluation result] : [Rating]
Very good: 5 points Good: 4 points Normal: 3 points Slightly poor: 2 points Poor: 1 point Judgment criteria: “Duration of skin color covering effect”
[Average score] : [Judgment]
4.5 or higher: AA
4.0 or more to less than 4.5: A
3.5 or more to less than 4.0: B
2.0 or more to less than 3.5: C
Less than 2.0: D

Evaluation method: "B. Smooth spreading""2. Moist feeling"
Evaluation was made by a panel of 20 cosmetics evaluation specialists in their twenties. The samples were filled into 3 x 4.5 cm resin pans and rubbed with a mat to assess sensation after 10 mg was applied to the skin. "2. Smooth spreading" and "2. Moist feeling" were evaluated on a 5-grade scale according to the following evaluation criteria, and each sample was given a score.

Evaluation criteria "b. Smooth spreading""2. Moist feeling":
[Evaluation result] : [Rating]
Very good: 5 points Good: 4 points Fair: 3 points Somewhat poor: 2 points Poor: 1 point Judgment criteria: “b.
[Average score] : [Judgment]
4.5 or higher: AA
4.0 or more to less than 4.5: A
3.5 or more to less than 4.0: B
2.0 or more to less than 3.5: C
Less than 2.0: D

Evaluation method: "C. Smoothness of surface of powdered solid cosmetic after use"
A sample is filled in a 3×4.5 cm resin dish, and evaluated by rubbing each of the 5 samples with the same mat by a panel of 5 cosmetics evaluation specialists. The direction and the number of times of rubbing were 50 times from top to bottom with respect to the long side of the container. Evaluation criteria are described below.
Evaluation criteria "C. Smoothness of powder solid cosmetic surface after use":
5: Aggregates cannot be visually confirmed.
4: Only 1 to 3 aggregates with a diameter of 2 mm or less are visually observed. 3: Agglomerates with a diameter of 5 mm or less are observed, but are loosened when the mat is renewed.
2: A large number of aggregates exceeding 5 mm in diameter are observed.
1: Aggregates almost entirely and cannot be removed.

Judgment criteria: "C. Smoothness of powder solid cosmetic surface after use"
[Average score] : [Judgment]
4.5 or higher: AA
4.0 or more to less than 4.5: A
3.5 or more to less than 4.0: B
2.0 or more to less than 3.5: C
Less than 2.0: D

The powder foundations having the compositions of Examples 1 to 25 shown in Tables 3 and 4 were . It was excellent in terms of persistence of the skin color covering effect, smooth spreadability, smoothness of the surface of the powdery solid cosmetic after use, and moist feeling.
In the powder foundation of Comparative Example having the composition shown in Table 5, when the powder foundation of Comparative Example 1, which was produced by a different production method from Comparative Example 1, was contained, the effect of maintaining the skin color covering effect and the moist feeling were lowered. In addition, in the case of Comparative Example 2 containing an iron-doped product produced by a different production method from Comparative Production Example 2 and not coated with hydrous silicic acid, the smoothness of the surface of the powdery solid cosmetic after use was slightly reduced, and the surface smoothness was reduced. Since the presence of iron was small, the moist feeling was lacking. In the case of Comparative Example 3, which contained the non-iron oxide-coated product of Comparative Production Example 5, the skin color covering effect lasted, spread smoothly, and the moist feeling was very weak. In addition, in the case of Comparative Example 4, in which Comparative Production Examples 6 and 7 were used together, even if the average amount of iron oxide coating was within the range, variations in color occurred, and the effect of covering the skin was poor in duration. was not highly effective. In addition, in the case of Comparative Example 5 in which silicon oxide/hydroxide was not coated in Comparative Production Example 8, the skin color itself was unfavorable and was too yellowish, the skin color covering effect lasted poorly, and the dispersibility was poor. Therefore, the smoothness of the surface of the powdery solid cosmetic after use was poor. In the case of Comparative Example 6, which did not contain fine particles of titanium oxide, the skin color was unfavorable, the dispersibility was poor, the feeling of dryness was easily felt, and the surface smoothness and moistness of the powdery solid cosmetic after use were poor. In the case of Comparative Example 7, which does not contain component (B), the smooth spreadability and surface smoothness of the powdery solid cosmetic after use were poor. In the case of Comparative Example 8, which does not contain the component (C), on the contrary, it spreads too lightly, lowers the covering effect, and is inferior in smooth spreadability. Comparative Example 9 containing no component (D) was unfavorable in terms of smoothness of the powdery solid cosmetic surface after use.

Example 26: White powder (component) (%)
1. (A) Production Example 5 5
2. (Dimethicone/Vinyl Dimethicone) Crosspolymer 2% Coating
Porous silica (average particle size 5 μm) 8
3. Zinc oxide (average particle size 3 μm) *4 3
4. Dimethiconol/aminopropyltriethoxysilane treated talc *1820
5. Zinc myristate*19 1
6. Palmitate/2-ethylhexanoate dextrin/ceramide-coated talc 1
7. Dimethiconol/aminopropyltriethoxysilane-coated sericite Remainder 8. Mica*10 10
9. Talc*20 19
10. Synthetic phlogopite*12 8
11. Iron oxide*5 0.2
12. mineral oil 2.5
13. Triethylhexanoin 3
14. Diphenylsiloxyphenyl trimethicone (KF-56) 2
15. Ethylhexyl hydroxystearate 1
16. White birch extract 0.1
17. Collagen Tripeptide F 0.001
18. Vegetable squalane 0.1
*18: SE-TA-EX (manufactured by Miyoshi Kasei Co., Ltd.)
*19: Powder base M (manufactured by NOF Corporation)
* 20: Crown Talc K-20 (manufactured by Matsumura Sangyo Co., Ltd.)

(Production method)
A. Components (1) to (4) are pulverized.
B. Mix A with (5) to (11).
C. D. Uniformly mixing B and (12) to (18). C was filled in a metal plate and compression-molded to obtain powdery solid white powder.

(result)
Example 26 was excellent in terms of "a. persistence of skin color covering effect", "b. smooth spreadability", "c. smoothness of surface of powdery solid cosmetic after use", and "2. moist feeling".

Example 27: White powder (component) (%)
1. (Dimethicone/vinyl dimethicone) crosspolymer 3% coating
Porous silica (average particle size 10 μm) 10
2. Synthetic phlogopite*12 18
3. Silicone treated low temperature calcined zinc oxide*21 6
4. Talc * 20 Remaining amount 5. (Dimethicone/Vinyl Dimethicone) Crosspolymer 2% Coating
Nonporous silica (average particle size 5 μm) 5
6. Zinc Laurate Sericite 12
7. Stearic acid/aluminum hydroxide coated titanium oxide 40%
Adsorption-treated synthetic phlogopite 12
8. Boron nitride*13 7
9. Lauroyl-L-lysine*15 3.5
10. (A) Production Example 6 5
11. Mica*11 33
12. Iron oxide *5, 6 (1:1 mixture) 0.7
13. Ethylhexyl methoxycinnamate 4.2
14. Diphenylsiloxyphenyl trimethicone (KF-56) 5
15. Vegetable squalane 0.1
16. Cnidium Water BG 0.1
17. Rhodiola cherry root extract 0.01
*21: MZY-505S (manufactured by Tayka)

(Production method)
A. Ingredients (1) to (3) are uniformly mixed.
B. Mix A with components (4)-(10).
C. Components (11) and (12) are added to B and mixed uniformly.
D. (13) to (17) are added to C, moistened, and the wet product is granulated.
E. 9 parts of purified water is added to 100 parts of D and uniformly wetted.
F. E was compression-molded and dried at 70° C. for 8 hours to obtain a powdery solid white powder.

(result)
Example 27 was excellent in terms of "a. persistence of skin color covering effect", "b. smooth spreadability", "c. smoothness of surface of powdery solid cosmetic after use" and "2. moist feeling".

Example 28: White powder (component) (%)
1. (A) Production Example 5 5
2. Mica*22 50
3. Amodimethicone-treated mica*23 7
4. Amodimethicone treated mica*24 15
5. Zinc oxide (average particle size 3 μm) *4 2
6. (A) Production Example 6 50% coated cornstarch (average particle size 13 ± 5 μm) 5
7. Microcrystalline cellulose (average particle size 10 μm)*25 treated with 3% distearyl glutamic acid 2Na 5
8. Silicic anhydride (average particle size 5 μm) *26 2
9. Synthetic phlogopite*12 remaining amount 10. Silicon treated anhydrous silicic acid/mica*27 20
11. Amodimethicone/cystearyldimonium chloride treated silica*285
12. Iron oxide*5 0.1
13. isotridecyl isononanoate 2
14. Diphenylsiloxyphenyl trimethicone (KF-56) 1
15. Dimethicone 0.5
16. Hydrolyzed collagen 0.0001
17. Jojoba seed oil 0.01
18. Hydrolyzed hyaluronic acid 0.001
19. acrylic acid-acryloyldimethyltaurate sodium copolymer,
isohexadecane, monooleic acid, POE (20) sorbitan,
Water mixture *29 0.5
20. Phenoxyethanol 0.2
21. Aluminum magnesium silicate 1
22. Ethanol 0.01
23. Polydolbate 80 0.25
24. cetyl ethylhexanoate 5
25. Tocopherol 0.1
*22: MICA POWDER Y-3000 (manufactured by Yamaguchi Mica)
*23: Y-2300WA3 (manufactured by Yamaguchi Maika)
*24: Y-2300WA1 (manufactured by Yamaguchi Maika)
*25: CELLULOBEADS D-10 (manufactured by Daito Kasei Kogyo Co., Ltd.)
*26: CHIFFONSILP-3R (manufactured by Nikki Shokubai Kasei Co., Ltd.)
*27: SXI-5 (manufactured by Miyoshi Kasei Co., Ltd.)
*28: TMS-0.5DCA (manufactured by Tayka)
*29: SIMULGEL EG QD (manufactured by SEPPIC)

(Production method)
A. Ingredients (1) to (18) are uniformly mixed.
B. Ingredients (19)-(25) are uniformly mixed.
C. Add B to A and mix evenly.
D. 100 parts of purified water is added to 100 parts of C and uniformly wetted.
E. D was poured into a container, compression-molded, and dried for 8 hours to obtain white powder in powdery solid form.

(result)
Example 28 was excellent in "a. longevity of skin color covering effect", "b. smooth spreadability", "c. smoothness of surface of powdery solid cosmetic after use", and "2. moist feeling".

Example 29: White powder (component) (%)
1. (A) Production Example 5 50% coated spherical cellulose acetate powder
(Average particle size 10 ± 5 µm) 5
2. Synthetic phlogopite*12 10
3. Zinc oxide*21 6
4. (A) Production Example 6 5
5. Talc * 20 Remaining amount 6. Mica*22 4
7. Amodimethicone treated mica 8
8. Zinc Laurate Sericite 5
9. Silicic anhydride (average particle size 5 μm) *26 5
10. Nylon-12*30 4
11. Silicic anhydride (average particle size 30 μm) 1
12. Boron nitride*13 5
13. Lauroyl lysine 2
14. Amodimethicone/cystearyldimonium chloride-treated silica *28 5
15. Iron oxide 0.01
16. 2-ethylhexyl methoxycinnamate 4.2
17. Diphenylsiloxyphenyl trimethicone (KF-56) 1
18. Macadamia Nut Fatty Acid Phytosteryl 0.4
19. Olive fruit oil 0.005
20. Rice germ oil 0.005
21. Sesame seed oil 0.005
22. Safflower oil 0.005
* 30: Toray nylon powder SP-500 (manufactured by Toray Industries, Inc.)

(Production method)
A. Ingredients (1) to (15) are uniformly mixed.
B. Add (16) to (22) to A and mix uniformly.
C. 9 parts of purified water is added to 100 parts of B and uniformly moistened.
D. C was compression-molded and dried for 8 hours to obtain a solid white powder.

(result)
Example 29 was excellent in "a. longevity of skin color covering effect", "b. smooth spreadability", "c. smoothness of surface of powdery solid cosmetic after use", and "2. moist feeling".

Example 30: Powder foundation (water slurry molding)
(Component) (%)
1. Talc*31 20
2. Mica*32 10
3. Sericite remaining amount 4. barium sulfate 8
5. Boron nitride*13 7
6. Siliconized low-temperature sintered zinc oxide *3 4
7. 0.5% silicone treatment, 2% iron oxide, 3% Al hydroxide,
1.5% hydrated silica coated titanium oxide (average particle size 0.27 μm) 10
8. Amodimethicone/cystearyldimonium chloride treated silica *2810
9. Chlorphenesin 0.2
10. Iron oxide *5-7 (0.2:1.5:0.05) mixture 3
11. (A) Production Example 5 10
12. Dimethicone 2.5
13. Liquid paraffin 1
14. cetyl ethylhexanoate 2
15. Squalane 0.5
16. Matsurica extract 0.1
17. Lemon extract 0.1
18. acrylic acid-acryloyldimethyltaurate sodium copolymer,
isohexadecane, monooleic acid, POE (20) sorbitan,
Water mixture *29 0.02
19. Phenoxyethanol 0.005
20. Aluminum magnesium silicate 0.025
21. Polysorbate 80 0.01
*31: SE-TA-46 (manufactured by Miyoshi Kasei Co., Ltd.)
*32: Micromica MK-200K (manufactured by Katakura Corp.)

(Manufacturing process)
A. Ingredients (12)-(16) are uniformly mixed.
B. (1) to (11) are uniformly mixed.
C. After adding A to B, 1 part of ethanol is added and mixed uniformly.
D. Add (17) to (21) to C and mix uniformly.
E. After adding 65 parts of water to D and mixing uniformly, C is added and mixed uniformly.
F. E was compression molded and dried for 8 hours to obtain a powder foundation.

(result)
Example 30 was excellent in terms of "a. persistence of skin color covering effect", "b. smooth spreadability", "c. smoothness of surface of powdery solid cosmetic after use", and "2. moist feeling".

Example 31: Powder foundation component (%)
1. Silicone treated zinc oxide*3 5
2. Silicic anhydride (average particle size 5 μm) *26 1.5
3. Synthetic phlogopite*12 10
4. (A) Production Example 6 10
5. Amodimethicone/cystearyldimonium chloride treated silica *28 0
6. Iron oxide *5-7 (0.1:1:0.05) mixture 4
7. Barium sulfate Remainder 8. Methylparaben 0.2
9. Talc*20 20
10. Boron nitride*13 10
11. Ethylhexyl p-methoxycinnamate 5
12. Sorbitan sesquiisostearate 0.5
13. isotridecyl isononanoate 1
14. Dimethylpolysiloxane*33 1
15. Squalane 0.01
16. Olive fruit oil 0.1
*33: KF-96-100CS (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production method)
A. Ingredients (1) to (10) are uniformly mixed.
B. Mix (11)-(16) evenly.
C. B and 0.5 parts of ethanol are added to A and mixed uniformly.
D. Add 5 parts of purified water to C and wet evenly.
E. A powder foundation was obtained by filling D in a container, compression molding, and drying for 8 hours.

(result)
Example 31 was excellent in "a. persistence of skin color covering effect", "b. smooth spreadability", "c. smoothness of surface of powdery solid cosmetic after use", and "2. moist feeling".

Claims (10)

the following components (A)-(D);
(A) Fine particles of titanium oxide having an average particle diameter of 10 to 70 nm surface-coated by the following (a-1) and (a-2), wherein the coating amount of (a-1) is the total mass of (A) 3 to 7% by mass of surface-coated titanium oxide (a-1) iron hydroxide and/or oxide (a-2) silicon hydroxide and/or oxide (B) Non-volatile silicone oil having a kinematic viscosity of 6 to 100 mm ² /s at 25°C (C) Ester oil (D) which is liquid at 25°C A powdery solid cosmetic containing spherical powder. 2. The treatment mass ratio (a-2)/(a-1) of component (a-1) and component (a-2) in component (A) is from 0.4 to 1.5 according to claim 1. powder solid cosmetics. 3. The powdery solid cosmetic composition according to claim 1, wherein the component (A) is further surface-coated with (a-3) aluminum hydroxide and/or oxide. 4. The powdery solid cosmetic composition according to any one of claims 1 to 3, wherein the component (A) is further treated with (a-4) a hydrophobizing agent. The powdery solid cosmetic composition according to any one of claims 1 to 4, wherein the component (C) has a molecular weight of 200 to 1,000. The powdery solid cosmetic composition according to any one of claims 1 to 5, wherein the component (D) contains one or more selected from silica, water-insoluble starch, and water-insoluble cellulose. 7. The powdery solid cosmetic composition according to any one of claims 1 to 6, further comprising, as component (E), two or more selected from boron nitride, acylated amino acid powder, bismuth oxychloride, synthetic mica, and mica. The powdery solid cosmetic composition according to any one of claims 1 to 7, further comprising a metal oxide having an average particle size of 0.1 to 5.0 µm as component (F). The powdery solid cosmetic according to any one of claims 1 to 8, wherein the components (A) and/or (F) are composited on the surface of the component (D). The powdery solid cosmetic composition according to any one of claims 1 to 9, wherein the component (A) is a blue light cut agent.

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