Aqueous dispersion and cosmetic material containing the same

Abstract

An aqueous dispersion containing: (a) hydrophobized zinc oxide fine particles having a number average primary particle diameter of 8 to 200 nm measured by image analysis of a transmission electron micrograph and obtained by hydrophobizing treatment of zinc oxide particles with an organosilicon: 10 to 80 mass%; (b) an aqueous component having 2 or more alcoholic hydroxyl groups: 1 to 50 mass%; and (c) a polyglycerin-modified organosilicon dissolved in the (b) component: 1 to 20 mass%, the aqueous dispersion being excellent in dispersibility in an aqueous medium, and being excellent in makeup effects and in coatability.

Description

Technical Field

[0001] This invention relates to an aqueous dispersion containing hydrophobic zinc oxide microparticles and a cosmetic material formulated with the aqueous dispersion. Background Technology

[0002] Typically, in sunscreen cosmetics, particulate inorganic powders such as titanium dioxide and zinc oxide are widely used as inorganic powders to improve transparency and UV shielding effect (Patent Document 1). However, due to the increased surface area, these inorganic powders exhibit enhanced interactions between particles, resulting in a tendency to aggregate.

[0003] These particulate inorganic powders are sometimes incorporated into the oil phase of cosmetic materials to improve the water resistance of the materials, and undergo hydrophobic surface treatment. By incorporating powders with such hydrophobic surface treatment, it is expected that they can maintain their UV shielding effect even when wetted (Patent Documents 2-4). On the other hand, when incorporating particulate inorganic powders into the aqueous phase, powders with hydrophilic surface treatments such as silica are sometimes used. However, these hydrophilic powders have problems with water resistance and user experience. In addition, as a method for dispersing hydrophobically treated powders in water, an aqueous dispersion of hydrophobically treated particulate zinc oxide obtained by modifying organosilicon with polyether has been studied. However, this aqueous dispersion of zinc oxide has problems with water resistance and makeup effect. Furthermore, sufficient comparative studies have not been conducted on aqueous dispersions of zinc oxide (Patent Document 5).

[0004] Furthermore, dispersions containing nonionic surfactants were studied, but sufficient dispersibility was not achieved (Patent Document 6). Therefore, there is a need for aqueous dispersions that can impart a good user experience when incorporated into cosmetic materials.

[0005] Existing technical documents Patent documents Patent Document 1: Japanese Patent Application Publication No. 2006-1886 Patent Document 2: Japanese Patent Application Publication No. 2014-201569 Patent Document 3: International Publication No. 2016 / 178380 Patent Document 4: Japanese Patent Application Publication No. 2020-002031 Patent Document 5: International Publication No. 2015 / 125622 Patent Document 6: Japanese Patent Application Publication No. 7-247119 Summary of the Invention

[0006] The technical problem that the invention aims to solve The present invention was made in view of the above circumstances, and its object is to provide an aqueous dispersion that exhibits excellent dispersibility in an aqueous medium and also provides excellent makeup effect and spreadability. A further object of the present invention is to provide a cosmetic material formulated with the aqueous dispersion that exhibits excellent transparency and a non-sticky feel (non-sticky).

[0007] Technical solutions for solving technical problems To achieve the above-mentioned objectives, the inventors conducted in-depth research and discovered that an aqueous dispersion exhibiting excellent dispersibility, makeup effect, and spreadability in an aqueous medium can be obtained. Furthermore, it was found that when this aqueous dispersion is used as a dispersion for cosmetic materials, it is easy to add the material, and cosmetic materials with excellent transparency, user experience, and water resistance can be obtained, thus completing this invention.

[0008] Therefore, the present invention provides an aqueous dispersion and a cosmetic material containing the aqueous dispersion.

[0009] 1. An aqueous dispersion comprising: (a) Hydrophobic zinc oxide microparticles with a number-average primary particle size of 8–200 nm, obtained by image analysis of transmission electron microscopy images, and which are obtained by hydrophobizing zinc oxide particles with organosilicon: 10–80% by mass. (b) Aqueous components having two or more alcoholic hydroxyl groups: 1–50% by mass; and (c) Polyglycerol-modified organosilicon dissolved in component (b) above: 1-20 by mass.

[0010] 2. The aqueous dispersion according to 1, wherein the total content of components (a), (b) and (c) is 90% by mass or more in the aqueous dispersion.

[0011] 3. The aqueous dispersion according to 1 or 2, wherein (a) component is hydrophobic micro-zinc oxide obtained by treating zinc oxide particles coated with hydrated silica with organosilicon.

[0012] 4. An aqueous dispersion according to any one of 1 to 3, wherein the organosilicon in component (a) is triethoxyoctylsilane.

[0013] 5. An aqueous dispersion according to any one of 1 to 4, wherein component (b) is an aqueous component having two alcohol hydroxyl groups.

[0014] 6. An aqueous dispersion according to any one of 1 to 5, wherein component (c) is a component that is insoluble in water.

[0015] 7. An aqueous dispersion according to any one of 1 to 6, wherein component (c) is polyglycerol-3-disiloxane polydimethylsiloxane.

[0016] 8. An aqueous dispersion according to any one of 1 to 7, wherein the mass ratio of the content of component (c) to the content of component (b) is 0.2 to 0.9.

[0017] 9. The aqueous dispersion according to claim 1, wherein the aqueous dispersion further comprises: (d) Water: 8-82% by mass The total content of components (a), (b), (c) and (d) in the aqueous dispersion is more than 90% by mass.

[0018] 10. A cosmetic material comprising an aqueous dispersion as described in any one of 1 to 9.

[0019] 11. The cosmetic material described in 10, wherein the cosmetic material is an emulsion, an aqueous dispersion is incorporated in an aqueous phase, and hydrophobic titanium dioxide microparticles with a number-average primary particle size of 8 to 200 nm, obtained by image analysis of transmission electron microscopy photographs, are not incorporated in the aqueous phase.

[0020] 12. The cosmetic material described in 10, wherein the cosmetic material is an emulsion, an aqueous dispersion is incorporated in the aqueous phase, and hydrophobic titanium dioxide microparticles (e) with a number-average primary particle size of 8 to 200 nm as determined by image analysis of a transmission electron microscope photograph are incorporated in the oil phase and have undergone hydrophobic treatment.

[0021] 13. The cosmetic material described in 10, wherein the cosmetic material is an emulsion, contains an aqueous dispersion in an aqueous phase, and contains a hydrophobic titanium dioxide microparticle dispersion in the aqueous phase. The above-mentioned hydrophobic titanium dioxide microparticle dispersion contains: (e) Hydrophobic titanium oxide microparticles with a number-average primary particle size of 8–200 nm obtained by image analysis of transmission electron microscopy images and after hydrophobic treatment; (b) Aqueous components having two or more alcoholic hydroxyl groups; and (c) Polyglycerol-modified organosilicon dissolved in component (b).

[0022] Invention Effects According to the present invention, an aqueous dispersion with excellent dispersibility and coating properties in an aqueous medium can be obtained. When the aqueous dispersion is used as a dispersion of a cosmetic material, it is easy to add the material and can provide a cosmetic material with excellent transparency, user experience, and water resistance. Detailed Implementation

[0023] The present invention will now be described in detail. It should be noted that in this invention, ingredient names are sometimes recorded using cosmetic designations or the International Nomenclature of Cosmetic Ingredients (INCI). When the cosmetic designation corresponds to the INCI, the cosmetic designation or its English description may sometimes be omitted.

[0024] [(a) Ingredient] The present invention, component (a), comprises hydrophobic zinc oxide microparticles with a number-average primary particle size of 8–200 nm, as determined by image analysis using a transmission electron microscope. These microparticles are obtained by hydrophobizing zinc oxide particles with organosilicon. Component (a) can also be a composite powder with other powders, and can be used alone or in combination with two or more powders. Ultraviolet radiation is classified into long-wavelength ultraviolet radiation (UVA) with a wavelength of 320–400 nm, medium-wavelength ultraviolet radiation (UVB) with a wavelength of 290–320 nm, and short-wavelength ultraviolet radiation (UVC) with a wavelength below 290 nm. It is known that when UVA and UVB reach the ground, UVB causes erythema, while UVA causes immediate skin darkening. Generally, titanium dioxide has a high shielding effect against UVB, but its shielding effect against UVA is insufficient. On the other hand, zinc oxide is known to have a high shielding effect against UVA. Therefore, zinc oxide is effective when a high UVA shielding effect is desired and microparticle inorganic powders are incorporated into cosmetic materials. In this invention, an aqueous dispersion containing zinc oxide with excellent dispersibility in an aqueous medium can be obtained.

[0025] To reduce agglomeration or inhibit powder activity, zinc oxide particles can be surface-treated with silica, hydrated silica, alumina, etc., before hydrophobic treatment. Among these, hydrated silica-coated zinc oxide particles are preferred.

[0026] Examples of organosilicones used in hydrophobic treatments include: silanes or silylating agents such as triethoxyoctylsilane (manufactured by Shin-Etsu Chemical Industry Co., Ltd.: AES-3083); methyl hydrogen polysiloxanes such as polydimethylsiloxane (manufactured by Shin-Etsu Chemical Industry Co., Ltd.: KF-96 series) and hydrogenated polydimethylsiloxane (manufactured by Shin-Etsu Chemical Industry Co., Ltd.: KF-99P, KF-9901, etc.); and branched organosilicones such as triethoxysilylethyl polydimethylsiloxane and triethoxysilylethyl polydimethylsiloxane (manufactured by Shin-Etsu Chemical Industry Co., Ltd.: KF-9908, KF-9909, etc.). In particular, if the component contains one or more of the following: triethoxyoctylsilane, hydrogenated polydimethylsiloxane, and polydimethylsiloxane, the hydrophobic treatment becomes favorable, and it is preferred in terms of dispersibility with component (c). Among these, triethoxyoctylsilane and polydimethylsiloxane are preferred, and from a compatibility point of view, triethoxyoctylsilane is more preferred. There are no particular limitations on the hydrophobic treatment method, and known methods can be used. Examples include wet treatment, dry treatment, and gas-phase methods.

[0027] These surface-treated particulate inorganic powders can also be commercially available. Examples include MZ-306X, 506X, MZY-203S, 210M3S, TMZ-HA1, MZX-203OTS, 304OTS, 5080TS, MZN-A1, ZEC-1, MZX-300M, 505HPS (manufactured by Tayca), FINEX-50W-LP2, 52W-LP2, 30W-LP2, 33W-LP2, 50W-LP2, 25-LPT, 30S-LP2, 50S-LPT (manufactured by Sakai Chemicals), etc., ZNO... The following product names are available on the market: XZ-11S3L, ZnO-660SS-11S5, ZNO-660-ASGP7, MZO-35-11S5, MZO-35-I3, MZO-35-NOE7, ZnO-750-11SP, ZNO-750-ASG5, ZnO-750-ASGP6, ZnO-750-NJE7, ZNOFSF-11S4, A120-ZNO-11S3, and ZnO-USP1-I2 (manufactured by KOBO).

[0028] (a) The number-average primary particle size of component (a) is 8–200 nm, preferably 10–150 nm, and more preferably 20–100 nm, as determined by image analysis of transmission electron microscopy (TEM) images. If the particle size exceeds 200 nm, the UV protection function is reduced, and a false whitening effect may occur. If the particle size is less than 8 nm, it may lead to increased dryness and a poorer user experience. The average primary particle size of component (a) of the present invention is the average diameter of 200 particles determined by image analysis of TEM images. In the case where the powder is not spherical, the average of the minor and major axes of the particles is used as the average primary particle size.

[0029] (a) The content of the component in the aqueous dispersion is 10 to 80% by mass. From the viewpoint of usability, 20 to 75% by mass is preferred, more preferably 25% by mass or more, even more preferably 30% by mass or more, and particularly preferably 50% by mass or more. On the other hand, 70% by mass or less is more preferred, and 65% by mass or less is even more preferred. If the content is less than 10% by mass, sufficient UV shielding effect cannot be obtained; if the amount exceeds 80% by mass, it may lead to deterioration of the spreadability during use, reduction of the long-term stability of the dispersion, and increase in viscosity.

[0030] [(b) Components] Component (b) of this invention is an aqueous component having two or more alcoholic hydroxyl groups, i.e., a component that dissolves in water at 25°C, and can be used alone or in combination with two or more. When using alcohols with one hydroxyl group, such as ethanol or propanol, sufficient water dispersibility cannot be obtained. Specifically, examples of component (b) include: sorbitol (INCI), maltose (INCI), xylitol (INCI), glucose (INCI), glyceryl glucoside (INCI), sodium chondroitin sulfate (INCI: Sodium Chondroitin Sulfate), methyl glucetol polyether-10 (INCI), methyl glucetol polyether-20 (INCI), hyaluronic acid, phosphatidylglycerol, phosphatidylinositol, and other sugar alcohols, as well as BG (INCI: Butylene Glycol), PG (INCI: Propylene Glycol), and DPG (INCI: Dipropylene Glycol). Diols such as propylene glycol (INCI), pentylene glycol (INCI), 1,10-decanediol (INCI), octyl glycol (INCI), and 1,2-hexanediol (INCI); polyols such as erythritol (INCI), glycerin (INCI), diglycerol (INCI), and polyethylene glycol. Among these, considering their solubility in water in any proportion, user experience, and versatility as cosmetic ingredients, diols such as butylene glycol (BG) and dipropylene glycol (DPG) are preferred; as are polyols such as glycerin. Particularly preferred are aqueous components and diols with two hydroxyl groups in their molecules.

[0031] (b) The content of component (b) in the aqueous dispersion is 1 to 50% by mass, preferably 5 to 25% by mass; from the viewpoint of water resistance, 7 to 15% by mass is more preferred. From the viewpoint of stability over time, 15 to 25% by mass is further preferred, and particularly 15 to 20% by mass is especially preferred. If it is less than 1% by mass, the stability of the dispersion deteriorates; if it exceeds 50% by mass, when incorporated into cosmetic materials, the cosmetic material becomes sticky, and the orientation of component (c) towards component (a) is hindered by component (b), which may lead to increased viscosity; or may impair its dispersibility in aqueous media. By incorporating component (b), component (c) can be uniformly oriented towards the surface of component (a).

[0032] [(c) Components] Component (c) of this invention is a polyglycerol-modified organosilicon dissolved in component (b) above, and can be used alone or in combination with two or more. By using the polyglycerol-modified organosilicon dissolved in component (b), it can be combined with polyglycerol-modified organosilicon in water and function as a dispersant for hydrophobic zinc oxide particles in water. It should be noted that "dissolved in component (b)" means that when component (c) is mixed with component (b) at a concentration of 20% by mass and then allowed to stand at 25°C for 1 hour, a state without interface and transparent to translucent is considered "dissolved," while a state of turbidity or separation into two layers is considered "undissolved." In addition, "transparent to translucent" means that when the above mixture is filled into a sample cell with a thickness of 1 cm, the total transmittance measured according to the method described in JIS K7361-1:1997 is 50% or more. It should be noted that even if it is a polyglycerol-modified organosilicon, if it is not dissolved in component (b), it is not considered component (c) of this invention.

[0033] In terms of chemical structure, polyglycerol-modified organosilicon can be modified by using polyglycerol to modify the organosilicon chain as the main chain in a block or graft manner. From the viewpoint of maintaining the uniform dispersion of component (a) in cosmetic materials, a branched type is preferred, and it is also possible to have branches such as organosilicon chains on the organosilicon main chain. Specifically, examples include polyglyceryl-3 disiloxane (INCI: Polyglyceryl-3 DisiloxaneDimethicone). From the perspective of water resistance, component (c) is preferably a component that dissolves at 25°C when mixed with BG (butanediol) at a concentration of 20% by mass, and does not dissolve by the above method when mixed with water at a concentration of 20% by mass. The polyglycerol-modified organosilicon of the present invention refers to an organosilicon that has been co-modified using hydrophilic groups other than polyglycerol groups, but in which more than 50% by mass of the hydrophilic groups are polyglycerol groups. From the viewpoint of water resistance, organosilicon modified only with polyglycerol groups is preferred.

[0034] Furthermore, the HLB (Hydrophile-Lipophile Balance) value of the polyglycerol-modified organosilicon used in this invention is preferably 3 or more and less than 17, more preferably 5 or more and less than 15, and even more preferably 8 or more and less than 12. By setting it to 3 or more, the dispersibility is further improved; by setting it to less than 17, the water resistance is further improved. It should be noted that in this invention, HLB is calculated by "(total formula weight of hydrophilic groups / total molecular weight) × 20".

[0035] (c) The content of component (c) in the aqueous dispersion is 1-20% by mass, preferably 3-15% by mass, more preferably 4-10% by mass, and even more preferably 5-8% by mass. If it is less than 1% by mass, the stability of the dispersion may deteriorate; in addition, if it exceeds 20% by mass, component (c) may further oriented towards component (a), or component (c) oriented towards component (a) may easily detach from its surface under the influence of component (c) not oriented towards component (a). As a result, the viscosity of the dispersion may increase, affecting its dispersibility in aqueous media.

[0036] Furthermore, the mass ratio (c) / (b) of the content of component (c) to the content of component (b) is preferably 0.2 to 0.9. From the perspective of dispersibility and water resistance, 0.2 to 0.5 is more preferred, and 0.2 to 0.35 is even more preferred. By setting this ratio to 0.2 or higher, component (c) readily oriented towards component (a), thereby suppressing viscosity increases and further improving stability. On the other hand, by setting it to 0.9 or lower, component (c) is dispersed through the dispersion medium, thereby readily oriented towards component (a), suppressing viscosity increases and further improving stability.

[0037] The total content of components (a), (b), and (c) in the aqueous dispersion is preferably 90% by mass or more, more preferably 95% by mass or more, and even more preferably 99% by mass or more. Without the addition of component (d) described later, the upper limit can be 100% by mass. By setting it to 90% by mass or more, the influence of components other than (a), (b), and (c) is minimized, resulting in a dispersion with better stability and user experience.

[0038] [(d) Components] Water can be incorporated into the aqueous dispersion of the present invention. The water used can be ion-exchanged water, distilled water, deionized water, purified water as defined in the Japanese Pharmacopoeia, hot spring water, deep ocean water, plant-derived water, etc.

[0039] Regarding the amount of component (d) in the aqueous dispersion, 8 to 82% by mass is preferred, more preferably 18 to 72% by mass, and even more preferably 28 to 40% by mass. By incorporating component (d), the viscosity of the aqueous dispersion can be reduced. From the viewpoint of the long-term stability of the aqueous dispersion, 82% by mass or less is preferred.

[0040] When component (d) is incorporated, the total content of components (a), (b), (c), and (d) in the aqueous dispersion is preferably 90% by mass or more, more preferably 95 to 100% by mass, and even more preferably 99 to 100% by mass. By setting the total content of components (a), (b), (c), and (d) to 90% by mass or more, the influence of components other than (a), (b), (c), and (d) is minimized, and a dispersion with better stability and user experience can be produced.

[0041] To improve operability during preparation and filling, defoamers can be added to the aqueous dispersion. Examples of defoamers include simethicone (INCI), polydimethylsiloxane (INCI), sodium chloride (INCI: Sodium Chloride) salts, and polyether-modified silicones. Furthermore, oily substances such as polydimethylsiloxane can be pre-emulsified emulsions, and complex substances such as simethicone can be self-emulsifying substances pre-mixed with silicone surfactants. From the perspective of defoaming and foam-suppressing properties, simethicone and sodium chloride are particularly preferred; from the perspective of affinity with cosmetic ingredients, simethicone is preferred. Regarding the amount of defoamer in the aqueous dispersion, 0.0001 to 1% by mass is preferred, more preferably 0.0025 to 0.6% by mass, and even more preferably 0.005 to 0.01% by mass.

[0042] [Aqueous Dispersion] The aqueous dispersion according to the present invention is easy to mix in an aqueous medium. It should be noted that the term "dispersion" in "aqueous dispersion" refers to a composition containing 8 to 99% by mass of water, in which sedimentation is temporarily observed in the dispersibility test described in the embodiments described later, but which will disperse uniformly if stirred continuously.

[0043] [Morphology of aqueous dispersions] The dispersion of the present invention preferably has a viscosity of 10 mPa·s or more and less than 200,000 mPa·s, and is in a liquid state; more preferably, it has a viscosity of 10 mPa·s or more and less than 10,000 mPa·s; and even more preferably, it has a viscosity of 10 mPa·s or more and less than 5,000 mPa·s. By setting it to 10 mPa·s or more, the stability of the dispersion is further improved. On the other hand, from an operability point of view, it is preferable to have a viscosity of 200,000 mPa·s or less. It should be noted that the viscosity is measured at 25°C using a Brinell viscometer (TVB-10 type, manufactured by Toki Sangyo) according to the method described in JIS K 7117-1:1999.

[0044] The hardness of the paste-like dispersion is not particularly limited. When manufacturing with three rollers, a hardness of 100 or less is preferred from the viewpoint of ease of processing. Furthermore, considering ease of formulation into cosmetic materials, a hardness of less than 80 is more preferred, and less than 50 is even more preferred. The lower limit is not particularly limited; setting it to 5 or higher makes it easier to suppress concentration separation of the dispersion. It should be noted that hardness is expressed using a rheometer, such as the RT-2002D·D rheometer (manufactured by Rheotech Co., Ltd., measuring terminal: 5mm). f The values ​​were measured as follows: needle depth: 10 mm, sample stage rising speed: 5 cm / min, temperature: 25℃, range: 200.

[0045] [Method for manufacturing aqueous dispersions] In preparing the aqueous dispersion of the present invention, there are no particular limitations on the method and apparatus, and it can be carried out using known methods. For example, any mixer, pulverizer, mixer, media mixer, rotary mixer, or disperser, such as a Henschel mixer, ball mill, kneader, planetary mixer, ribbon blender, dispersant mixer, homomixer, jet mill, roller mill, bead mill, or high-pressure disperser, can be used. From the viewpoint of mixing efficiency, bead mills or high-pressure dispersers are preferred for dispersion.

[0046] [Cosmetic Materials] The aqueous dispersion of the present invention can be used for a variety of purposes, and in particular, it can be used as a raw material for all cosmetic materials applied externally to the skin and hair.

[0047] The amount of the aqueous dispersion of the present invention incorporated in cosmetic materials is preferably 0.5 to 60% by mass, more preferably 1.0 to 50% by mass, and even more preferably 5.0 to 40% by mass. By setting it to 0.5% by mass or more, sufficient UV protection effect can be expected; by setting it to 60% by mass or less, the user experience is further improved.

[0048] The form of cosmetic materials containing the aqueous dispersion of the present invention is not particularly limited. For example, aqueous cosmetic materials (cosmetic materials whose base contains aqueous components (water, components dissolved in water, and components dispersed in water)) and emulsions are preferred. As an emulsion, it can be any of the following: W / O type (water-in-oil) emulsion cosmetic materials, O / W type (oil-in-water) emulsion cosmetic materials, W / O / W type, O / W / O type, and other composite emulsions. From the perspective of water resistance, W / O type emulsion cosmetic materials are preferred. Especially when used as a dispersion of O / W type emulsion cosmetic materials, it is easy to add the material, and a stable cosmetic material with excellent transparency, user experience, and water resistance can be obtained.

[0049] [(e) component] In the cosmetic material of the present invention, by incorporating hydrophobic titanium dioxide microparticles with a number-average primary particle size of 8-200 nm, as measured by image analysis using a transmission electron microscope (e), it is expected that short-wavelength light can be shielded, and cosmetic materials with higher ultraviolet shielding effects can be produced. The hydrophobic treatment is not particularly limited to any known treatment agent commonly used in cosmetics, except for the organosilicon treatment method for zinc oxide described above. Examples include waxes, paraffins, organofluorine compounds such as perfluoroalkyl phosphates, surfactants, amino acids such as N-acylglutamic acid, aluminum stearate, magnesium myristate, etc. In particular, one or more selected from stearic acid, isostearic acid, and triethoxyoctylsilane can be used. The hydrophobic treatment method is not particularly limited, and known methods can be used. Examples include wet treatment, dry treatment, and gas-phase methods.

[0050] To reduce aggregation or suppress powder activity, titanium dioxide microparticles can be surface-treated with silica, hydrated silica, alumina, aluminum hydroxide, etc., before hydrophobic treatment. It should be noted that when incorporated into cosmetic materials, alumina and aluminum hydroxide are not preferred surface treatment agents if there are concerns about hindering the swelling of concurrently used water-soluble polymers or reducing water resistance. From the viewpoint of suppressing powder activity and not easily hindering the swelling of water-soluble polymers, hydrated silica-coated titanium dioxide particles obtained by surface treatment with hydrated silica are preferred. It should be noted that coating refers to covering part or all of the titanium dioxide particles.

[0051] These surface-treated titanium dioxide microparticles are also commercially available. For example, they are commercially available under trade names such as MT-01, 02, 050OTS, 100Z, 100TV, 100SAS, 150EX, 200ST, 500SAM, 505SAS, 700Z, 700BS, N1, 500CST (manufactured by Tayca), ST-455, 455WS, 457ECS, 457SA, 495M, 455FA (manufactured by Titanium Industry), STR-100A-LP, 100C-LP, 100W-LP, 100C-LF, and 40-LP (manufactured by Sakai Chemical Industry). STR-100W-LP is an example of hydrophobic titanium dioxide microparticles obtained by hydrophobizing hydrated silica-coated titanium dioxide particles.

[0052] (e) The number-average primary particle size of component (e) is 8–200 nm, preferably 10–150 nm, as determined by image analysis of transmission electron microscopy (TEM) images. If the particle size exceeds 200 nm, the UV protection function decreases, potentially leading to a whitening effect; if the particle size is less than 10 nm, it may result in increased dryness and a poorer user experience. The average primary particle size of component (e) of this invention is the average diameter of 200 particles determined by image analysis of TEM images. When the powder is not spherical, the average primary particle size is taken as the average of the minor diameters of the particles. Examples of the shape of particulate titanium dioxide include spindle-shaped, needle-shaped, straw-bundle-shaped, strip-shaped, roughly spherical, and rod-shaped particles.

[0053] When incorporating ingredient (e) above, it is preferably 1 to 30% by mass in the cosmetic material, more preferably 5 to 15% by mass. When incorporating ingredient (e), it is preferable to pre-disperse ingredient (e) in the oil.

[0054] It should be noted that when the aqueous dispersion of the present invention is incorporated into an emulsion, it is preferable to incorporate it into the aqueous phase. When the aqueous dispersion of the present invention is incorporated into aqueous cosmetic materials or emulsions, especially water-in-oil (W / O) cosmetic materials, from the viewpoint of the transparency and user experience of the cosmetic material, it is preferable not to incorporate the above-mentioned component (e) into the aqueous phase, and more preferably into the oil phase. This prevents heterogeneous aggregation of (a) titanium dioxide and (e) zinc oxide in the aqueous dispersion, which could lead to a deterioration in stability and user experience.

[0055] When incorporating component (e), for example, similar to the aqueous dispersion of the present invention, it can be formulated as an aqueous dispersion pre-dispersed by components (b), (c), and (e) above, or as an aqueous dispersion pre-dispersed by components (b), (c), (d), and (e) above. Specifically, by formulating it in the form of a hydrophobic titanium dioxide microparticle dispersion containing the following components, it is possible to further improve the UV shielding effect while also obtaining effects such as transparency, usability, and water resistance of the cosmetic material: (e) Hydrophobic titanium oxide microparticles with a number-average primary particle size of 8–200 nm, obtained by image analysis of transmission electron microscopy images; (b) Aqueous components having two or more alcoholic hydroxyl groups; and (c) Polyglycerol-modified organosilicon dissolved in component (b) above.

[0056] It should be noted that the hydrophobic titanium dioxide microparticle dispersion is preferably an aqueous dispersion.

[0057] The content of (e) in the dispersion is preferably 10-80% by mass, more preferably 10-70% by mass; from the viewpoint of usability, it is further preferably 10-65% by mass, particularly preferably 15-60% by mass, and most preferably 20-55% by mass. From the viewpoint of UV shielding effect, it is preferably 10% by mass or more; if the amount exceeds 80% by mass, it may lead to deterioration of the spreadability during use, a decrease in the long-term stability of the dispersion, and an increase in viscosity. It should be noted that the preferred components and preferred amounts of components (b), (c), and (d) are the same as those of the aqueous dispersion described above, and especially when preparing an aqueous dispersion containing component (e), it is preferably set to the range of 1.0-30% by mass for (b) and 1.0-20% by mass for (c).

[0058] The cosmetic material of this invention can be in various forms, including liquid, emulsion, cream, solid, paste, gel, powder, pressed powder, multilayer, mousse, spray, stick, and pen. Multilayer refers to cosmetic materials that separate into two or more layers when left to stand. These are filled into a container containing stainless steel balls or similar materials and used after shaking. They are called shake-type materials, etc., and are easily stabilized, thus providing an excellent user experience, but shaking can be troublesome. The aqueous dispersion of this invention has good dispersibility, so even in this formulation, it is easy to redisperse. The cosmetic material of this invention has good stability, so it can be used without separating into multiple layers. Spray refers to a spray-type cosmetic material filled into a dispenser container, aerosol container, etc., and used by spraying from a nozzle. The cosmetic material filled into the dispenser container is sprayed in a mist form from the nozzle of the dispenser. In an aerosol container, the cosmetic material and the spray agent are filled together. The spray agent is not particularly limited; for example, various liquefied petroleum gas (LPG), dimethyl ether, nitrogen, carbon dioxide, etc., can be used. They can be used alone or in appropriate combinations of two or more. The aqueous dispersions of the present invention have high dispersibility and therefore can also be used in such dosage forms. The pH, viscosity, etc. of the cosmetic materials can be appropriately selected according to the dosage form.

[0059] The aqueous dispersion of this invention is applicable to various cosmetic materials, and is particularly preferred for external use on the skin, such as skincare cosmetic materials, color cosmetic materials, antiperspirant cosmetic materials, and UV-protective cosmetic materials, as well as external use on the hair, such as hair cosmetic materials. Examples of skincare cosmetic materials include toners, lotions, creams, cleansing balms, face masks, oil-based liquid preparations, massage oils, serums, essential oils, cleansers, deodorants, hand creams, lipsticks, and concealers. Examples of color cosmetic materials include primers, concealers, loose powders, pressed powders, eyeshadows, mascaras, eyeliners, eyebrow pencils, and lipsticks. Examples of antiperspirant cosmetic materials include roll-on types, cream types, solution types, and stick types. Examples of cosmetic materials that provide UV protection include sunscreen oils, sunscreen lotions, and sunscreen creams. Examples of cosmetic materials that provide hair protection include shampoos, conditioners, hair masks, and styling products. Among these, cosmetic materials that provide UV protection are preferred. The pH, viscosity, and other properties of the cosmetic materials can be appropriately selected based on the formulation.

[0060] The cosmetic material of the present invention can contain various ingredients commonly used in cosmetic materials without impairing the effects of the present invention. For example, it may contain: (1) an oil, (2) an aqueous component other than components (b) and (d), (3) a surfactant other than component (c), (4) a powder other than component (a), (5) a composition comprising a cross-linked organopolysiloxane and an oil that is liquid at room temperature, (6) a film-forming agent, and (7) other additives. They can be used alone or in appropriate combinations of two or more. It should be noted that the components contained in the dispersion described above can also be used in combination. However, without the dispersion of the present invention, even if components (a) to (d) of the present invention are used, the significant effects required for the purpose of the present invention cannot be obtained. The amount of components (a) to (d) other than the dispersion is not particularly limited as long as it does not impair the effects of the present invention. When the components are incorporated into the cosmetic material separately from the dispersion, the amount of component (a) in the cosmetic material is preferably 0.0 to 20% by mass, more preferably 0.0 to 10% by mass, excluding the amount in the dispersion. (b) The amount of the component in the cosmetic material is preferably 0.0 to 70% by mass, more preferably 0.0 to 50% by mass, and even more preferably 0.0 to 25% by mass. (c) The amount of the component in the cosmetic material is preferably 0.0 to 3.0% by mass, more preferably 0.0 to 1.0% by mass. The dispersion of the present invention has high stability and, when incorporated into cosmetic materials, does not hinder the performance of emulsifiers and dispersants in the cosmetic materials, thus reducing the amount of component (c) other than the dispersion.

[0061] (1) Oil Oils can be volatile or non-volatile, and can be solid, semi-solid, or liquid at room temperature (25°C). Examples include silicone oil, solid oily components, natural animal and vegetable oils, semi-synthetic oils, hydrocarbon oils, higher alcohols, fatty acids, ester oils, fluorinated oils, and ultraviolet absorbers.

[0062] Silicone oil Examples of silicone oils include alkyl-modified organosilicones such as polydimethylsiloxane (INCI), trisiloxane (INCI), methyl polytrimethylsiloxane (INCI), ethyltrisiloxane (INCI), ethyl polymethylsiloxane (INCI), and hexyl polydimethylsiloxane (INCI); long-chain alkyl-modified organosilicones such as octyl polymethylsiloxane (INCI); linear or branched organopolysiloxanes ranging from low to high viscosity, such as phenyl polytrimethylsiloxane (INCI), diphenyl polydimethylsiloxane (INCI), diphenylsiloxyphenyl polytrimethylsiloxane (INCI), tetraphenyl dimethyldisiloxane (INCI), and methylhydropolysiloxane; and cyclic organopolysiloxanes such as cyclotetrasiloxane (INCI), cyclopentasiloxane (INCI), and cyclohexasiloxane (INCI). Alkane; amino-modified organopolysiloxanes such as amino-terminated polydimethylsiloxane (INCI) and aminopropyl polydimethylsiloxane (INCI); pyrrolidone-modified organopolysiloxanes such as PCA polydimethylsiloxane (INCI); defoamers such as simethicone oil (INCI); pyrrolidone carboxylic acid-modified organopolysiloxanes, high-polymerization-degree colloidal dimethylpolysiloxanes, colloidal amino-modified organopolysiloxanes, colloidal dimethylsiloxane-methylphenylsiloxane copolymers, and other silicone rubbers; as well as low-viscosity organopolysiloxane solutions of organosilicon and rubber, amino acid-modified organosilicon, fluorine-modified organosilicon, organosilicon resins, and solvents of organosilicon resins, etc.

[0063] Examples of commercially available silicone oils include those manufactured by Shin-Etsu Chemical Co., Ltd.: KF-96L-1cs, KF-96L-1.5cs, KF-96L-2cs, KF-96A-6cs, KF-4422, KF-4418, KF-54, KF-54HV, KF-56A, KF-995, etc.

[0064] • Solid oily components In this invention, when it is desired to solidify the cosmetic material, it is preferable to use an oily component that is solid at 25°C. As for the oily component that is solid at 25°C, it is preferable to have a melting point of 40°C or higher, more preferably a melting point of 60°C to 110°C. Examples of such components include waxes, hydrocarbons, esters, higher alcohols, and higher fatty acids; there are no particular limitations as long as they are raw materials that can generally be incorporated into cosmetic materials. Specifically, examples include: Brazilian carnauba wax (INCI: Copernicia Cerifera (Carnauba) Wax), sugarcane wax, candelilla wax (INCI: Euphorbia Cerifera (Candelilla) Wax), refined candelilla wax, rice bran wax, sumac wax, jojoba wax, kapok wax, rice bran wax, waxed bayberry fruit wax, avocado butter, cocoa butter, sumac fruit wax (INCI: Rhus succedanea Fruit Wax), lignite wax (INCI: Montan Wax), hydrogenated castor oil with isostearate, and other plant waxes; beeswax, tallow, beef tallow, lard (INCI: Lard), horse tallow (INCI: Horse) Animal waxes such as fat, lanolin, shellac wax, and cetacean; semi-synthetic waxes such as lanolin esters, lanolin fatty acid esters, and beeswax esters; hydrogenated oils such as hydrogenated castor oil and hydrogenated coconut oil; hydrocarbon waxes such as solid paraffin, polyethylene, ceresin, ozokerite, and microcrystalline wax; wax esters such as synthetic beeswax; amino acid stearyl alcohols such as dioctyldodecyl lauroyl glutamate, dioctyldodecyl lauroyl glutamate, and dioctyldodecyl lauroyl glutamate; fatty acids such as stearic acid and behenic acid; and silicone waxes such as acrylic silicone resins (acrylic silicone graft copolymers manufactured by Shin-Etsu Chemical Industry Co., Ltd.: KP-561P, etc.) or their derivatives, preferably selected from one or more of them.

[0065] • Natural animal and vegetable oils and semi-synthetic oils Examples of natural plant and animal oils and semi-synthetic oils include: avocado oil (INCI: Persea Gratissima (Avocado) Oil), flaxseed oil (INCI: Linum Usitatissimum (Linseed) Seed Oil), sweet almond oil (INCI: Prunus Amygdalus Dulcis (Sweet Almond) Oil), perilla oil (INCI: Olea Europaea (Olive) Fruit Oil), California torreya oil (INCI: Torreya Californica (California Nutmeg) Oil), citronella oil (INCI: Cymbopogon Nardus (Citronella) Oil), Japanese torreya seed oil (INCI: Torreya Nucifera Seed Oil), and almond oil (INCI: Kyounin). Yu), wheat germ oil (INCI: Triticum Vulgare (Wheat) Germ Oil), sesame oil (INCI: Sesamum Indicum (Sesame) Seed Oil), rice germ oil (INCI: Oryza Sativa (Rice) Germ Oil), rice bran oil (INCI: Oryza Sativa (Rice) Bran Oil), camellia seed oil (INCI: Camellia Kissi Seed Oil), safflower seed oil (INCI: Carthamus Tinctorius (Saflower) Seed Oil), soybean oil (INCI: Glycine Soja (Soybean) Oil), tea seed oil (INCI: Camellia Sinensis Seed Oil), camellia oil (INCI: Camellia Japanica Seed Oil) Oils such as evening primrose oil (INCI: Oenothera Biennis (Evening Primrose) Oil), rapeseed oil (INCI: Rapeseed oil), and corn germ oil (INCI: Zea Mays (Corn) Germ Oil) are all germ oils.Peach kernel oil (name indicated), oil palm oil (name indicated (INCI: Elaeis Guineensis (Palm) Oil)), oil palm kernel oil (name indicated (INCI: Elaeis Guineensis (Palm) Kernel Oil)), castor oil (name indicated (INCI: Ricinus Communis (Castor) Seed Oil)), sunflower seed oil (name indicated (INCI: Helianthus Annuus (Sunflower) Seed Oil)), grape seed oil (name indicated (INCI: Vitis Vinifera (Grape) Seed Oil)), jojoba seed oil (name indicated (INCI: Simmmondsia Chinensis (Jojoba) Seed Oil)), macadamia seed oil (name indicated (INCI: Macadamia Ternifolia Seed Oil)), meadowfoam seed oil (name indicated (INCI: Limnanthes Alba (Meadowfoam) Seed Oil)), cottonseed oil (name indicated (INCI: Gossypium Herbaceum)). Natural plant oils such as Cotton Seed Oil, Coconut Oil, and Arachis Hypogaea Oil; natural animal oils such as Shark Liver Oil, Cod Liver Oil, Fish Liver Oil, Turtle Oil, Mink Oil, and Egg Oil; and semi-synthetic oils such as Hydrogenated Coconut Oil and Lanolin Oil.

[0066] Hydrocarbon oil As hydrocarbon oils, examples include linear or branched hydrocarbon oils, which can be volatile or non-volatile. Specifically, examples include: olefin oligomers (INCI), isoalkanes such as (C13,14) isoalkanes (INCI), isododecane (INCI), undecane (INCI), tridecane (INCI), dodecane (INCI), isohexadecane (INCI), hydrogenated polyisobutene (INCI), squalane (INCI), mineral oil (INCI), cocoane (INCI), and alkanes such as (C13-15)alkanes (INCI).

[0067] · higher alcohols Examples of higher alcohols include those with 6 or more carbon atoms, more preferably 10 to 30. Specific examples of higher alcohols include: lauryl alcohol (INCI), myristyl alcohol (INCI), palmitol (INCI), stearyl alcohol (INCI), behenyl alcohol (INCI), oleyl alcohol (INCI), isostearyl alcohol (INCI), octyldodecyl alcohol (INCI), cholesterol (INCI), phytosterol (INCI), squalene (INCI), etc.

[0068] ·Ester oil Examples of ester oils include: diisobutyl adipate, di(hexyldecyl)adipate, di(heptylundecyl)adipate, isostearyl isostearate, and other monoisostearate alkyl diol esters; isocetyl isostearate, trimethylolpropane triisostearate, ethylene glycol di(ethylhexanoate), cetyl ethylhexanoate, and trimethylolpropane tri(ethylhexanoate). Octyl dodecyl esters, such as triethylhexanoate, pentaerythrityl tetra(ethylhexanoate), octyl dodecyl stearate, and octyl dodecyl ester.Oleyl oleate (INCI: Oleyl Oleate), Octyldodecyl oleate (INCI: Octyldodecyl Oleate), Decyl oleate (INCI: Decyl Oleate), Neopentyl glycol di(ethylhexanoate) (INCI: Neopentyl Glycol Diethylhexanoate), Neopentyl glycol dicaprate (INCI: Neopentyl Glycol Dicaprate), Diisostearyl malate (INCI: Diisostearyl Malate), Triethyl citrate (INCI: Triethyl Citrate), Diethylhexyl succinate (INCI: Diethylhexyl Succinate), Amyl acetate (INCI: Amyl Acetate), Ethyl acetate (INCI: Ethyl Acetate), Butyl acetate (INCI: Butyl Acetate), Isocetyl Stearate (INCI: Isocetyl Stearate), Butyl Stearate (INCI: Butyl Stearate), Diisopropyl Sebacate (INCI: Diisopropyl Sebacate), Diethylhexyl Sebacate (INCI: Diethylhexyl Sebacate), Cetyl Lactate (INCI: Cetyl Lactate), Myristyl Lactate (INCI: Myristyl Lactate), Isononyl Isononanoate (INCI: Isononyl Isononanoate), Isotridecyl Isonanoate (INCI: Isopropyl Palmitate), Isopropyl Palmitate (INCI: Ethylhexyl Palmitate) Isopalmitate), isocetyl palmitate (INCI: Isocetyl Palmitate, Hexyldecyl Palmitate, etc. palmitate);Cholesteryl hydroxystearate (INCI: Cholesteryl Hydroxystearate), isopropyl myristate (INCI: Isopropyl Myristate), octyldodecyl myristate (INCI: Octyldodecyl myristate), myristyl myristate (INCI: Myristyl myristate), etc.; ethylhexyl laurate (INCI: Ethylhexyl Laurate), hexyl laurate (INCI: Hexyl Laurate), dioctyldodecyl lauroyl glutamate (INCI: Dioctyldodecyl Lauroyl Glutamate), isopropyl lauroyl sarcosinate (INCI: IsopropylLauroyl Sarcosinate), coco-caprylate / caprate (INCI: Coco-Caprylate·Caprate), etc.

[0069] In addition, among ester oils, preferred glyceryl ester oils include triglyceride (INCI), caprylic / capric triglyceride, cocoyl glyceride (INCI), caprylic / capric triglyceride, succinic triglyceride, and caprylic / capric triglyceride.

[0070] Fluorinated oils Examples of fluorinated oils include perfluoronaphthalene (INCI), perfluorononylpolydimethylsiloxane (INCI), and perfluoromethylcyclopentane (INCI).

[0071] • Ultraviolet absorbers Examples of UV absorbers include benzophenone-1 (INCI: Benzophenone-1), benzophenone-2 (INCI: Benzophenone-2), benzophenone-3 (INCI: Benzophenone-3), benzophenone-4 (INCI: Benzophenone-4), benzophenone-5 (INCI: Benzophenone-5), benzophenone-6 (INCI: Benzophenone-6), benzophenone-9 (INCI: Benzophenone-9), humosalicylate (INCI), octocrylene (INCI), tert-butylmethoxydibenzoylmethane (INCI: Butyl Methoxydibenzoylmethane), and ethylhexyl salicylate (INCI: Ethylhexyl... Salicylate), Diethylaminohydroxybenzoylhexyl benzoate (INCI: Diethylamino Hydroxybenzoyl Hexyl Benzoate), Polysilicon-15 (INCI), Ethylhexyl Dimethoxybenzylidene Dioxoimidazolidine Propionate (INCI: Ethylhexyl Dimethoxybenzylidene Dioxoimidazolidine Propionate), Terephthalidene Dicamphor Sulfonic Acid (INCI: Terephthalidene Dicamphor Sulfonic Acid), Ethylhexyl Triazine (INCI), Methyl Trimethoxycinnamate Bis(trimethylsiloxy)silylisopentyl ester (INCI: IsopentylTrimethoxycinnamate Trisiloxane), Cresoltrazol Trisiloxane (INCI), Ethylhexyl Dimethyl PABA (INCI: Ethylhexyl Dimethyl PABA), Isopropyl p-methoxycinnamate (INCI: Isopropyl Methoxycinnamate), Ethylhexyl methoxycinnamate (INCI: EthylhexylMethoxycinnamate), Diethylhexyloxyphenol methoxyphenyltriazine (INCI), Phenylbenzimidazole sulfonic acid (INCI: Phenylbenzimidazole Sulfonic Acid), Methylene bisbenzotriazolyl tetramethylbutylphenol (INCI), Glyceryl ethylhexanoate dimethoxycinnamate (INCI: GlycerylEthylhexanoate (Dimethoxycinnamate), glyceryl PABA ester (INCI), diisopropyl methyl cinnamate (INCI: Diisopropyl Methyl Cinnamate), cinnamate (INCI), ethylhexyl dimethoxybenzylidene dioxoimidazolidine propionate (INCI: Ethylhexyl Dimethoxybenzylidene Dioxoimidazolidine Propionate), etc.

[0072] (2) Aqueous components other than (b) and (d) Water-based ingredients are those other than those listed in (b) and (d) above. There are no specific limitations as long as they are water-based ingredients that can be commonly incorporated into cosmetic materials. Specifically, examples include moisturizers such as betaine (INCI), sodium pyrrolidone hydroxy acid (INCI: Sodium PCA), egg yolk lecithin, soybean lecithin, phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, and sphingomyelin. Additionally, examples include vinyl polymers such as gum arabic, guar gum, carrageenan, agar, quince seed gum, locust bean gum, xanthan gum, pullulan, sodium carboxymethyl cellulose, hydroxyethyl cellulose, and polycarboxylate; and water-soluble polymers such as acrylic polymers such as ammonium acryloyl dimethyl taurate / vinylpyrrolidone copolymers, sodium acrylate / sodium acryloyl dimethyl taurate copolymers, hydroxyethyl acrylate / sodium acryloyl dimethyl taurate copolymers, acrylamide / sodium acryloyl dimethyl taurate copolymers, and polyacrylamide. Among these methods, the stabilization of water-in-oil cosmetic materials can be achieved relatively easily by using acrylic polymers.

[0073] (3)(c) Surfactants other than the ingredients As surfactants, there are nonionic, anionic, cationic, and amphoteric surfactants, without particular limitation. Any surfactant commonly used in cosmetic materials other than the component (c) mentioned above can be used. Among these surfactants, from the viewpoint of obtaining a stable cosmetic material, one or more of non-crosslinked silicone surfactants and crosslinked silicone surfactants are preferred. In any case, the amount of surfactant other than component (c) in the cosmetic material is preferably 0.1% to 20% by mass. If it is 0.1% by mass or more, the dispersing and emulsifying functions can be fully exerted; if it is 20% by mass or less, the cosmetic material will not produce a sticky feel, and this is preferred. The HLB of the surfactant other than component (c) is not limited, but from the purpose of maintaining the water resistance of the cosmetic material, 2% to 14.5 is preferred.

[0074] As a non-crosslinked organosilicon surfactant, it is a surfactant in which a portion of the methyl group of the linear or branched organosilicon backbone is replaced by a hydrophilic group such as polyethylene glycol or polyglycerol. Specifically, it is preferably a linear or branched polyoxyethylene-modified organopolysiloxane, a linear or branched polyoxyethylene-polyoxypropylene-modified organopolysiloxane, a linear or branched polyoxyethylene-alkyl co-modified organopolysiloxane, a linear or branched polyoxyethylene-polyoxypropylene-alkyl co-modified organopolysiloxane, a linear or branched polyglycerol-modified organopolysiloxane, a linear or branched polyglycerol-alkyl co-modified organopolysiloxane, or a linear or branched pyrrolidone-modified organopolysiloxane. Specifically, examples include PEG-11 methyl ether polydimethylsiloxane (INCI), PEG / PPG-20 / 22 butyl ether polydimethylsiloxane (INCI), PEG-3 polydimethylsiloxane (INCI), PEG-10 polydimethylsiloxane (INCI), PEG-9 polydimethylsiloxane ethyl polydimethylsiloxane (INCI), lauryl PEG-9 polydimethylsiloxane ethyl polydimethylsiloxane (INCI), cetyl PEG / PPG-10 / 1 polydimethylsiloxane (INCI), polyglycerol-3 polydimethylsiloxane ethyl polydimethylsiloxane (INCI), lauryl polyglycerol-3 polydimethylsiloxane ethyl polydimethylsiloxane (INCI), and isostearyl polyglycerol-3 polydimethylsiloxane (INCI).

[0075] Examples of commercially available products include those manufactured by Shin-Etsu Chemical Industry Co., Ltd.: KF-6011, KF-6011P, KF-6012, KF-6015, KF-6017, KF-6043, KF-6028, KF-6038, KF-6048, KF-6104, KF-6106, KF-6105, KF-6180, KF-6115, etc.

[0076] Examples of cross-linked silicone surfactants include (polydimethylsiloxane / (PEG-10 / 15)) cross-linked polymer (INCI), (PEG-15 / lauryl polydimethylsiloxane) cross-linked polymer (INCI), (PEG-10 / lauryl polydimethylsiloxane) cross-linked polymer (INCI), (PEG-15 / lauryl polydimethylsiloxane ethyl polydimethylsiloxane) cross-linked polymer (INCI), (polydimethylsiloxane / polyglycerol-3) cross-linked polymer (INCI), (lauryl polydimethylsiloxane / polyglycerol-3) cross-linked polymer (INCI), and (polyglycerol-3 / lauryl polydimethylsiloxane ethyl polydimethylsiloxane) cross-linked polymer (INCI).

[0077] Furthermore, when using a cross-linked silicone surfactant, in a composition comprising the cross-linked silicone surfactant and an oil that is liquid at room temperature, the cross-linked silicone surfactant preferably comprises more than its own weight of the liquid oil to swell the liquid oil.

[0078] As this liquid oil, liquid silicone oil, hydrocarbon oil, ester oil, natural animal and vegetable oil, semi-synthetic oil, etc., and fluorinated oils can be used as any component of the oil (1). Examples of such oils include cyclopentasiloxane (INCI), polydimethylsiloxane (INCI), octyl polymethylsiloxane (INCI), mineral oil (INCI), isododecane (INCI), isohexadecane (INCI), glyceryl tri(ethylhexanoate) ester (INCI), isotrimethylene ether isononanoate (INCI: Isotridecyl Isonanoate), squalane (INCI), etc.

[0079] Examples of commercially available cross-linked silicone surfactants that swell due to the presence of liquid oils include KSG-210, KSG-240, KSG-270, KSG-310, KSG-320, KSG-330, KSG-340, KSG-320Z, KSG-350Z, KSG-710, KSG-790, KSG-810, KSG-820, KSG-830, KSG-840, KSG-820Z, and KSG-850Z, manufactured by Shin-Etsu Chemical Co., Ltd.

[0080] (4)(a) Powders other than the ingredients Examples of powders other than component (a) include coloring pigments, inorganic powders, metallic powders, organic powders, and inorganic-organic composite powders. Specifically, they are shown below.

[0081] Coloring pigments As coloring pigments, there are no particular limitations as long as they are typically used for coloring cosmetic materials. Pigments that can be used include red iron oxide (INCI: Iron Oxides), yellow iron oxide (INCI: Iron Oxides), white titanium dioxide (INCI: Titanium Dioxide), black iron oxide (INCI: Iron Oxides), ultramarine (INCI: Ultramarines), Prussian blue (INCI: Ferric Ferrocyanide, Ferric Ammonium Ferrocyanide), manganese violet (INCI: Manganese Violet), cobalt titanate (INCI: Cobalt Titanium Oxide), chromium hydroxide (INCI: Chromium Hydroxide Green), chromium oxide (INCI: Chromium Oxide Greens), and aluminum / cobalt oxide (INCI: Cobalt Aluminum). Titanium oxide (TIO), titanium / titanium oxide sintered products (INCI: Titanium / Titanium Dioxide), lithium / cobalt titanate (INCI: Lithium Cobalt Titanate), iron oxide / titanium oxide sintered products (INCI: Iron Oxides, Titanium Dioxide), and other composites doped with dissimilar metals; titanium nitride (INCI: Titanium Nitride), ferrous hydroxide (INCI: Iron Hydroxide)... c - Any one of the following pigments: inorganic brown pigments such as iron oxide; inorganic yellow pigments such as loess; pigments obtained by laked pigments from tar or natural pigments.

[0082] In addition, the shape of the pigment can be any shape, such as spherical, roughly spherical, rod-shaped, spindle-shaped, petal-shaped, strip-shaped, or irregular. As long as it can impart color to cosmetic materials, there are no particular restrictions on its geometric shape.

[0083] Inorganic powders Examples of inorganic powders include zirconium oxide (INCI: Zirconium Dioxide), zinc oxide (INCI: Zinc Oxide), cerium oxide (INCI: Cerium Oxide), magnesium oxide (INCI: Magnesium Oxide), barium sulfate (INCI: Barium Sulfate), calcium sulfate (INCI: Calcium Sulfate), magnesium sulfate (INCI: Magnesium Sulfate), calcium carbonate (INCI: Calcium Carbonate), magnesium carbonate (INCI: Magnesium Carbonate), talc (INCI), mica (INCI), kaolin (INCI), synthetic fluorophlogopite (INCI: Synthetic Fluorphlogopite), synthetic phlogopite iron (INCI: Synthetic Fluorphlogopite), biotite (INCI: Biotite), and potassium silicate (INCI: Potassium... Silicate), silicon dioxide (INCI), aluminum silicate (INCI: Aluminum Silicate), magnesium silicate (INCI: Magnesium Silicate), silicic acid (aluminum / magnesium) (INCI: Magnesium Aluminum Silicate), calcium silicate (INCI: Calcium Silicate), silicic acid (aluminum / calcium / sodium) (INCI: Aluminum Calcium Sodium Silicate), silicic acid (lithium / magnesium / sodium) (INCI: Lithium Magnesium Sodium Silicate), silicic acid (sodium / magnesium) (INCI: Sodium Magnesium Silicate), borosilicate (calcium / aluminum) (INCI: Calcium Aluminum Borosilicate), borosilicate (calcium / sodium) (INCI: Calcium Sodium) Borosilicate, hydroxyapatite (INCI), bentonite (INCI), montmorillonite (INCI), lithium montmorillonite (INCI), zeolite (INCI), alumina (INCI), aluminum hydroxide (INCI: Aluminum Hydroxide), boron nitride (INCI: BoronNitride), glass (indicating name (INCI: Glass)), and other microparticles.

[0084] In addition, as inorganic coloring pearlescent pigments, examples include mica (INCI) coated with titanium dioxide (INCI), synthetic fluorophlogopite (INCI) coated with titanium dioxide (INCI); or bismuth oxychloride (INCI), bismuth oxychloride (INCI) coated with titanium dioxide (INCI), talc (INCI) coated with titanium dioxide (INCI), fish scale foil (INCI), colored mica coated with titanium dioxide (INCI), etc., without particular limitation, whether untreated or subjected to known surface treatments commonly used in cosmetics.

[0085] Metal powder Examples of metal powders include microparticles containing aluminum (INCI: Aluminum Powder), copper (INCI: Copper Powder), silver (INCI: Silver Powder), and gold (INCI: Gold).

[0086] Organic powder Examples of organic powders include those containing organosilicon, polyamide, polyacrylate, polyester, polyethylene (INCI), polypropylene (INCI), polystyrene (INCI), styrene-acrylic acid copolymer, divinylbenzene-styrene copolymer, polyurethane, vinyl resin, urea resin, melamine resin, benzo-melamine, polymethylbenzene melamine, tetrafluoroethylene, polymethyl methacrylate, cellulose (INCI), silk (INCI), nylon (name indicated), phenolic resin, epoxy resin, polycarbonate, etc.

[0087] In particular, examples of organosilicon include organosilicon resin particles; polymethylsilsesquioxane (INCI), silicone rubber powder, organosilicon resin-coated silicone rubber powder; (vinyl dimethicone / methicone silsesquioxane) crosspolymer (INCI: vinyl dimethicone / methicone silsesquioxane crosspolymer), (diphenyl dimethicone / vinyl diphenyl dimethicone / silsesquioxane) crosspolymer (INCI: diphenyl dimethicone / vinyl diphenyl dimethicone / silsesquioxane crosspolymer), polyorganosilicon-1 crosspolymer (INCI), polyorganosilicon-22 (INCI), etc.

[0088] Examples of commercially available powders containing organosilicon include KMP-590, KMP-591, KMP-592, KMP-597, KMP-598, KSP-100, KSP-101, KSP-102, KSP-105, KSP-100W, KSP-300, KSP-411, KSP-441, KM-9729, and KM-440, manufactured by Shin-Etsu Chemical Co., Ltd.

[0089] In addition, metal soaps can be cited as examples. Specific examples include powders containing zinc stearate (INCI: Zinc Stearate), aluminum stearate (INCI: Aluminum Stearate), calcium stearate (INCI: Calcium Stearate), magnesium stearate (INCI: Magnesium Stearate), zinc myristate (INCI: Zinc Myristate), magnesium myristate (INCI: Magnesium Myristate), sodium cetyl phosphate (Zinc / Sodium) (INCI: Sodium Zinc Cetyl Phosphate), potassium cetyl phosphate (INCI: Potassium Cetyl Phosphate), etc.

[0090] Furthermore, organic pigments can be cited as specific examples, such as Red 3, Red 104(1) (representing the name (INCI: Red 28, Red 28 Lake)), Red 106, Red 201 (representing the name (INCI: Red 6)), Red 202 (representing the name (INCI: Red 7)), Red 204, Red 205, Red 220 (representing the name (INCI: Red 34)), Red 226 (representing the name (INCI: Red 30)), Red 227 (representing the name (INCI: Red 33, RED 33 Lake)), Red 228 (representing the name (INCI: Red 36)), Red 230(1) (representing the name (INCI: Red 22, Red 22 Lake)), Red 230(2) (representing the name), Red 401 (representing the name), Red 505 (representing the name), and Yellow 4 (representing the name (INCI: Yellow)). 5), Yellow 5 (representing name (INCI: Yellow 6, Yellow 6 Lake)), Yellow 202 (1) (representing name (INCI: Yellow 8)), Yellow 203 (representing name (INCI: Yellow 10, Yellow 10 Lake)), Yellow 204 (representing name (INCI: Yellow 11)), Yellow 401, Blue 1 (representing name (INCI: Blue 1, Blue 1 Lake)), Blue 2, Blue 201, Blue 205 (representing name (INCI: Blue 4)), Blue 404 (representing name), Green 3 (representing name (INCI: Green 3, Green 3 Lake)), Green 201 (representing name (INCI: Green 5)), Green 202 (representing name (INCI: Green 6)), Green 204 (representing name (INCI: Green 8)), Green 205 (representing name), Orange 201 (representing name (INCI: Orange 5), Orange 203 (name (INCI: Pigment Orange 5)), Orange 204 (name), Orange 205 (name (INCI: Orange 4, Orange 4 Lake)), Orange 206 (name (INCI: Orange 10)), Orange 207 (name (INCI: Orange 11)), etc., are tar pigments;Natural pigments include cochineal (INCI), lac acid (INCI: Laccaic Acid), safflower red (INCI: Carthamus Tinctorius (Safflower) Flower Extract), ginkgo biloba root extract (INCI: Lithospermum Officinale Root Extract), gardenia yellow (INCI: Gardenia Yellow), and gardenia blue (INCI: Hydrolyzed Gardenia Florida Extract).

[0091] Inorganic-organic composite powder As an inorganic-organic composite powder, an example is a composite powder obtained by coating an organic powder onto the surface of an inorganic powder using a known and commonly used method.

[0092] It should be noted that the powders mentioned above can also be powders whose particle surfaces have been treated. Furthermore, from the viewpoint of the water resistance of cosmetic materials, the surface treatment agent is preferably a hydrophobic agent. There are no particular limitations on this hydrophobic agent; examples include silicone treatment agents, waxes, paraffin hydrocarbons, perfluoroalkyl and phosphate organic fluorine compounds, surfactants, amino acids such as N-acylglutamic acid, aluminum stearate, magnesium myristate, and other metal soaps.

[0093] More preferably, it is an organosilicon treatment agent, such as silanes or silylating agents like triethoxyoctylsilane (INCI), polydimethylsiloxane (INCI), polymethylsiloxane (INCI), hydrogenated polydimethylsiloxane (INCI), triethoxysilylethyl polydimethylsiloxane (INCI), triethoxysilylethyl polydimethylsiloxane (INCI), triethoxysilylethyl polydimethylsiloxane (INCI), (acrylate / tridecyl acrylate / triethoxysilylpropyl methacrylate / polydimethylsiloxane methacrylate copolymer) (represented by name (INCI: Acrylates / Tridecyl Acrylate / Triethoxysilylpropyl Methacrylate / Dimethicone Methacrylate Copolymer)), etc.

[0094] Specific examples of these organosilicon treatment agents include AES-3083, KF-99P, KF-9901, KF-9908, KF-9909, KP-574, and KP-541, manufactured by Shin-Etsu Chemical Co., Ltd.

[0095] Furthermore, the aforementioned surface hydrophobic treatment agents can be used alone or in combination of two or more. Specific examples of surface-treated coloring pigments include the KTP-09 series manufactured by Shin-Etsu Chemical Industry Co., Ltd., particularly KTP-09W, KTP-09R, KTP-09Y, and KTP-09B.

[0096] • Ultraviolet absorbing and scattering agents In addition to the aqueous dispersion of the present invention, a dispersion obtained by pre-dispersing particles that absorb and scatter ultraviolet light as component (a) or component (e) in an oil can also be used.

[0097] As this oiling agent, liquid silicone oil, hydrocarbon oil, ester oil, natural animal and vegetable oil, semi-synthetic oil, etc., and fluorinated oil can be used as any component of (1) the oiling agent.

[0098] Specific examples of dispersions obtained by pre-dispersing particles that absorb and scatter ultraviolet light in an oil can be found in the SPD series (trade names) produced by Shin-Etsu Chemical Co., Ltd., particularly SPD-T5, SPD-T5L, SPD-Z5, SPD-T6, SPD-Z6, SPD-T7, and SPD-Z7L.

[0099] • Hydrophilic treatment of ultraviolet absorbing and scattering agents In addition to components (a) and (e) of this invention, hydrophilically treated particulate titanium dioxide and particulate zinc oxide can also be used. Specific examples of hydrophilic treatment include hydrated silica treatment and treatment using high-HLB surfactants. Hydrophilically treated UV scattering agents have insufficient water resistance and are therefore not preferred for cosmetic materials requiring water resistance.

[0100] (5) A composition comprising a cross-linked organopolysiloxane and an oil that is liquid at room temperature. In a composition comprising a cross-linked organopolysiloxane and an oil that is liquid at room temperature, the cross-linked organopolysiloxane preferably comprises a liquid oil that swells with a weight greater than its own weight. As such a liquid oil, liquid silicone oil, hydrocarbon oil, ester oil, natural animal or vegetable oil, semi-synthetic oil, or fluorinated oil can be used as any component of the oil (1). Examples of such liquid oils include cyclopentasiloxane (INCI), polydimethylsiloxane (INCI), mineral oil (INCI), isododecane (INCI), isohexadecane (INCI), triglyceride (INCI), isotrimethylenetetramine (INCI), isotrimethylenetetramine isononanoate (INCI: IsotridecylIsononanoate), squalane (INCI), and coconut oil-caprylate / caprate (INCI: Coco-Caprylate / Caprate).

[0101] (5) The cross-linked silicone surfactants that are different from those in (3) above are compounds that do not have polyether or polyglycerol structures in their molecular structure. Specific examples include (dimethylsiloxane / vinyl dimethylsiloxane) cross-linked polymer (INCI), (dimethylsiloxane / phenylvinyl dimethylsiloxane) cross-linked polymer (INCI: Dimethicone / Phenyl Vinyl dimethicone crosspolymer), (vinyl dimethylsiloxane / lauryl dimethylsiloxane) cross-linked polymer (INCI), (lauryl dimethylsiloxane ethyl dimethylsiloxane / bisvinyl dimethylsiloxane) cross-linked polymer (INCI), etc.

[0102] Examples of compositions comprising a commercially available crosslinked organopolysiloxane and an oil that is liquid at room temperature include KSG-15, KSG-1510, KSG-16, KSG-1610, KSG-19, KSG-016F, KSG-18A, KSG-41A, KSG-42A, KSG-43, KSG-44, KSG-45, KSG-042Z, KSG-045Z, KSG-048Z, and KM-116, manufactured by Shin-Etsu Chemical Co., Ltd.

[0103] (6) Film-forming agent Film-forming agents are primarily formulated to further maintain the lasting effect of cosmetic materials. There are no particular limitations, but from the viewpoint of imparting water repellency, silicone-based compositions are preferred. Specifically, trimethylsiloxysilicate, acrylic-silicone coating agents, silicone-modified norbornene, silicone-modified pullulan, silicone-modified polyvinyl alcohol, etc., can be used.

[0104] Examples of film-forming agents for organosilicon compositions include: trimethylsiloxysilicate (INCI), (acrylate / polydimethylsiloxane) copolymer (INCI), (norbornene / tri(trimethylsiloxy)silylnorbornene) copolymer (INCI), and pullulan (trimethylsiloxy)silylpropylcarbamoylcarbamoyl Pullulan, etc.

[0105] The film-forming agent can be dissolved in a liquid oil at room temperature before being incorporated into the cosmetic material. As the liquid oil, liquid silicone oil, hydrocarbon oil, ester oil, natural animal and vegetable oil, semi-synthetic oil, and fluorinated oil can be used as any component of the oil (1). Specific examples of commercially available silicone film-forming agents include KF-7312J, KP-545, KP-549, KP-543, NBN-30-ID, TSPL-30-ID, and TSPL-30-D5 manufactured by Shin-Etsu Chemical Industry Co., Ltd.

[0106] (7) Other additives Other additives include oil-soluble gelling agents, preservatives and bactericides, antiperspirants, fragrances, salts, antioxidants, pH adjusters, chelating agents, cooling agents, anti-inflammatory agents, skin-beautifying ingredients (whitening agents, cell activators, skin roughness improvers, blood circulation promoters, skin astringents, anti-seborrheic agents, etc.), vitamins, amino acids, nucleic acids, hormones, inclusion complexes, etc.

[0107] Oil-soluble gelling agents Examples of oil-soluble gelling agents include aluminum stearate, magnesium stearate, zinc myristate, and other metal soaps; lauroyl glutamic acid (INCI: Lauroyl Glutamic Acid). α , c - Di-n-butylamine and other amino acid derivatives; dextrin palmitate (INCI: Dextrin Palmitate), dextrin isostearate (INCI: Dextrin Isostearate), dextrin myristate (INCI: Dextrin Myristate), stearoyl inulin (INCI: Stearoyl) Inulin), dextrin (palmitate / ethylhexanoate) (INCI: Dextrin Palmitate / Ethylhexanoate) and other dextrin fatty acid esters; sucrose palmitate, sucrose stearate and other sucrose fatty acid esters; oligofructose stearate, oligofructose 2-ethylhexanoate and other oligofructose fatty acid esters; benzylidene derivatives of sorbitol such as monobenzylidene sorbitol and dibenzylidene sorbitol; distearate dimethylammonium lithium montmorillonite (INCI), silachlor ammonium hydropyrite (INCI), lithium montmorillonite organic modified clay minerals; silachlor ammonium bentonite (INCI), etc.

[0108] Preservatives and bactericides Examples of preservatives and bactericides include alkyl p-hydroxybenzoate, benzoic acid, sodium benzoate, sorbic acid, potassium sorbate, phenoxyethanol, imidazolidinyl urea, salicylic acid, isopropyl methylphenol, phenol, p-chloro-m-cresol, hexachlorophenol, benzalkonium chloride, chlorhexidine dihydrochloride, triclocarban, iodopropynyl butylcarbamate, polylysine, bisabolol, ethylhexylglycerin, caprylic acid glyceride, capryloyloxyoxime acid, dimethylolpropionate, polyaminopropyl biguanide, photosensitive pigments, silver, and plant extracts. Preservatives can be used alone or in combination with two or more. In particular, polylysine, bisabolol, ethylhexylglycerin, glyceryl caprylate, capryloyloxyoxime acid, hexyl dimethylolpropionate, polyaminopropyl biguanide, ethylhexylglycerin, and phenoxyethanol are preferred as they are easily incorporated into cosmetic materials and are expected to have preservative effects. From the viewpoint of compatibility with the dispersion of the present invention, ethylhexylglycerin, phenoxyethanol, and glyceryl caprylate are especially preferred. By incorporating preservatives, it is expected that bacterial contamination can be inhibited and the shelf life of the dispersion can be improved.

[0109] Antiperspirant Examples of antiperspirants include aluminum hydroxy halides such as aluminum hydroxychloride, aluminum halides such as aluminum chloride, allantoin aluminum salts, tannic acid, persimmon tannin, sulfate (aluminum / potassium), zinc oxide, zinc p-phenolsulfonate, calcined alum, tetrachloro(aluminum / zirconium) hydrate, and trichloroglycine (aluminum / zirconium) hydrate. In particular, aluminum hydroxy halides, aluminum halides, and their complexes or mixtures with zirconium oxyhalides and zirconium hydroxy halides (e.g., tetrachloro(aluminum / zirconium) hydrate, trichloroglycine (aluminum / zirconium) hydrate) are preferred as ingredients exhibiting high efficacy.

[0110] ·spices As fragrances, there are natural fragrances and synthetic fragrances. Natural fragrances include plant-based fragrances isolated from flowers, leaves, wood, and fruit peels; and animal-based fragrances such as musk and civet. Synthetic fragrances include: hydrocarbons such as monoterpenes; alcohols such as aliphatic alcohols and aromatic alcohols; aldehydes such as terpenoids and aromatic aldehydes; ketones such as alicyclic ketones; esters such as terpene esters; lactones; phenols; oxides; nitrogen-containing compounds; and acetals.

[0111] Salts Examples of salts include inorganic salts, organic acid salts, amine salts, and amino acid salts. Inorganic salts include, for example, sodium, potassium, magnesium, calcium, aluminum, zirconium, and zinc salts of inorganic acids such as hydrochloric acid, sulfuric acid, carbonic acid, and nitric acid. Organic acid salts include, for example, salts of organic acids such as acetic acid, dehydroacetic acid, citric acid, malic acid, succinic acid, ascorbic acid, and stearic acid. Amino acid and amino acid salts include, for example, salts of amines such as triethanolamine and salts of amino acids such as glutamic acid. Additionally, salts of hyaluronic acid, chondroitin sulfate, aluminum zirconium glycine complexes, and acid-base neutralizing salts used in cosmetic formulations can also be used. Sodium chloride is preferred, especially considering solubility, usability, and foam suppression. In large-scale formulations, it can sometimes hinder the swelling of water-soluble polymers.

[0112] Antioxidants As antioxidants, there are no particular limitations; examples include carotenoids, ascorbic acid and its salts, ascorbic acid stearate, tocopherol, tocopherol acetate, tocopherol, p-tert-butylphenol, butylated hydroxyanisole, butylated hydroxytoluene, phytic acid, ferulic acid, thiotaurine, taurine, sulfites, isoascorbic acid and its salts, chlorogenic acid, epicatechin, epigallocatechin, epigallocatechin gallate, apigenin, kaempferol, myricetin, quercetin, etc. Antioxidants can be used alone or in combination with two or more.

[0113] pH adjuster Examples of pH adjusters include: lactic acid, citric acid, glycolic acid, succinic acid, tartaric acid, dl-malic acid, potassium carbonate, sodium bicarbonate, and ammonium bicarbonate.

[0114] · Chelating agents Examples of chelating agents include: alanine, sodium ethylenediaminetetraacetate, sodium polyphosphate, sodium metaphosphate, and phosphoric acid.

[0115] Cooling agents Examples of cooling agents include L-menthol, camphor, and menthyl lactate.

[0116] Anti-inflammatory agents Examples of anti-inflammatory agents include allantoin, glycyrrhizic acid and its salts, glycyrrhetinic acid and stearyl glycyrrhetinic acid ester, tranexamic acid, and azulene.

[0117] Skin-beautifying ingredients As skin-beautifying ingredients, examples include placental extract, arbutin, glutathione, and saxifrage extract (whitening agents); royal jelly, photosensitive pigments, cholesterol derivatives, and calf blood extract (cell activators); and skin roughness improvers such as vanillinamide, benzyl nicotinate, and nicotinic acid. β-Butoxyethyl ester, capsaicin, gingerone, cantharides tincture, ichthammol, caffeine, tannic acid, α - Borneol, Tocopheryl Nicotinate, Hexanicotinic Acid Inositol Ester, Cyclomansyl Mandelate, Cinnarizine, Toprazole, Acetylcholine, Verapamil, and Tinospora sinensis extract c - Blood circulation promoters such as oryzanol; skin astringents such as zinc oxide and tannic acid; anti-seborrheic agents such as sulfur and dimethylthiazide.

[0118] Vitamins Examples of vitamins include vitamin A derivatives such as vitamin A oil, retinol, retinyl acetate, and retinyl palmitate; vitamin B2 derivatives such as riboflavin, riboflavin butyrate, and flavin adenine dinucleotide; vitamin B6 derivatives such as pyridoxine hydrochloride, pyridoxine dioctanoate, and pyridoxine tripalmitate; vitamin B12 and its derivatives; vitamin B15 and its derivatives; vitamin C derivatives such as L-ascorbic acid, L-ascorbic acid dipalmitate, sodium L-ascorbic acid-2-sulfate, and dipotassium L-ascorbic acid phosphate; and vitamin D derivatives such as ergocalciferol and cholecalciferol. α -Tocopherol, β -Tocopherol, c -Tocopherol, dl- α -Tocopheryl acetate, dl- α -Tocopheryl nicotinate, dl- α - Vitamin E derivatives such as tocopherol succinate; niacin derivatives such as niacin, benzyl nicotinate, and nicotinamide; vitamin H; vitamin P; pantothenic acid derivatives such as calcium pantothenate, D-panthenol, panthenol ether, and acetylpanthenol ether; biotin, etc.

[0119] Amino acids Examples of amino acids include glycine, valine, leucine, isoleucine, serine, threonine, phenylalanine, arginine, lysine, aspartic acid, glutamic acid, cystine, cysteine, methionine, and tryptophan.

[0120] Nucleic acid Deoxyribonucleic acid (DNA) is an example of a nucleic acid.

[0121] ·hormone Examples of hormones include estradiol and diethylstilbestrol.

[0122] Inclusion compounds Examples of inclusion complexes include cyclodextrins.

[0123] Example The following examples and comparative examples illustrate the present invention in detail, but the present invention is not limited to the following examples. It should be noted that, unless otherwise specified in the following examples, "%" in composition means mass %, and "ratio" means mass ratio. It should also be noted that the amount of compounding recorded in the product name is the amount of compounded product, and the mass ratio (c) / (b) is the ratio of the pure amounts of the components.

[0124] [(C) Solubility of component] For the following components, after mixing in water or BG at 20% by mass and allowing to stand at 25°C for 1 hour, a state without interfaces and transparent to translucent is considered "dissolved," while a state of turbidity or separation into two layers is considered "undissolved." "Transparent to translucent" means that when the above mixture is filled into a 1 cm thick sample cell, the total transmittance, measured according to the method described in JIS K7361-1:1997, is 50% or more.

[0125] [Table 1]

[0126] (Note 1) Polyglyceryl-3-disiloxane (INCI: Polyglyceryl-3-disiloxane Dimethicone) (Note 2) Polyglyceryl-3 Polydimethylsiloxyethyldimethicone (INCI: Polyglyceryl-3 Polydimethylsiloxyethyldimethicone) [Examples of Dispersions] Based on the composition shown in Table 2 below, a slurry was prepared using a roller mill to obtain a dispersion. The dispersibility of the obtained dispersion was evaluated according to the following evaluation criteria. The results are recorded in the table.

[0127] [Water dispersibility] Using a metal spatula, take 0.5g of the dispersion listed in the table below and add it to a beaker containing 50mL of water. Stir and evaluate.

[0128] A: Disperses uniformly without settling. B: Settling was observed temporarily, but it dispersed evenly if stirring continued.

[0129] C: Not dispersed Set "B" and above as qualified.

[0130] It should be noted that the dispersions in the examples, when in paste form, have a hardness of 1 to 100, and when in liquid form, have a viscosity of 50 to 5000 mPa·s. Hardness was measured using a rheometer RT-2002D·D (manufactured by Rheotech Co., Ltd., measuring terminal: 5mm). f The value was obtained by measuring the following parameters: needle depth: 10 mm, sample stage rising speed: 5 cm / min, temperature: 25℃, measuring range: 200. The viscosity was measured according to the method described in JIS K 7117-1:1999, using a Brinell viscometer (TVB-10 type, manufactured by Toki Sangyo) at 25℃.

[0131] [Table 2]

[0132] (Note 1) The zinc oxide particles treated with hydrated silica (INCI: Hydrated Silica) and hydrogenated polydimethylsiloxane (INCI: Hydrogen Dimethicone) had a number-average first-order particle size of 20 nm, determined by image analysis of transmission electron microscopy images (based on the average diameter of 200 particles determined by image analysis of transmission electron microscopy images). (Note 2) The zinc oxide particles treated with hydrated silica (INCI: Hydrated Silica) and hydrogenated polydimethylsiloxane (INCI: Hydrogen Dimethicone) had a number-average first-order particle size of 35 nm, determined by image analysis of transmission electron microscopy images (based on the average diameter of 200 particles determined by image analysis of transmission electron microscopy images). (Note 3) The number-average first-order particle size of the microparticles treated with hydrogenated polydimethylsiloxane (INCI: Hydrogen Dimethicone) is 35 nm (based on the average diameter of 200 particles determined by image analysis of transmission electron microscopy images). (Note 4) Polyglyceryl-3-disiloxane (INCI: Polyglyceryl-3-disiloxane Dimethicone) (Note 5) Polyglyceryl-3 Polydimethylsiloxyethyldimethicone (INCI: Polyglyceryl-3 Polydimethylsiloxyethyldimethicone) As shown in Table 2, all embodiments of the present invention yielded dispersions (slurries) with good water dispersibility. On the other hand, the water dispersibility of Comparative Examples 1 and 2, which do not contain component (b), and Comparative Examples 3 and 4, which do not contain component (c), is worse than that of the embodiments.

[0133] Based on the composition shown in Table 3, a slurry was prepared using a bead mill. The preparability of the dispersion was evaluated according to the following evaluation criteria. The results are recorded in the table.

[0134] [Preparability of Dispersions] A: A dispersion can be obtained. C: Cannot be made into a dispersion Set "A" as qualified.

[0135] [Evaluation of makeup effect and spreadability] Ten professional evaluators assessed the makeup effect (degree of powderiness) and spreadability (good extensibility) of the cosmetic materials according to the following evaluation criteria. The results were determined based on the average score of the ten professional evaluators, according to the following judgment criteria.

[0136] [Evaluation Criteria] Set the following benchmark: 5 points: Very good 4 points: Good 3 points: Average 2 points: Slightly poor 1 point: Poor The average score is determined according to the following criteria.

[0137] [Judgment Criteria] A: Average score above 4.5 B: Average score of 3.5 or higher but less than 4.5 C: Average score of 2.5 or higher but less than 3.5 D: Average score less than 2.5 points Set "B" and above as qualified.

[0138] [Table 3]

[0139] (Note 1) The zinc oxide particles treated with hydrated silica (INCI: Hydrated Silica) and hydrogenated polydimethylsiloxane (INCI: Hydrogen Dimethicone) had a number-average first-order particle size of 35 nm, determined by image analysis of transmission electron microscopy images (based on the average diameter of 200 particles determined by image analysis of transmission electron microscopy images). (Note 2) The number-average first-order particle size of the zinc oxide particles treated with triethoxycaprylylsilane (INCI: Triethoxycaprylylsilane) was 25 nm (based on the average diameter of 200 particles determined by image analysis of transmission electron microscopy images). (Note 3) The number-average first-order particle size of the microparticles treated with hydrated silica (INCI: Hydrated Silica) is 25 nm (based on the average diameter of 200 particles determined by image analysis of transmission electron microscopy images). (Note 4) Polyglyceryl-3-disiloxane (INCI: Polyglyceryl-3-disiloxane Dimethicone) (Note 5) Polyglyceryl-3 Poldimethylsiloxyethyldimethicone (indicating name (INCI: Polyglyceryl-3 Poldimethylsiloxyethyldimethicone)) is insoluble in component (b).

[0140] (Note 6) PEG-10 polydimethylsiloxane (Indicating name (INCI: PEG-10Dimethicone)) (Note 7) PEG-9 polydimethylsiloxane (Indicating name (INCI: PEG-9Dimethicone)) As shown in Table 3, all of Examples 6 to 10 of the present invention yielded dispersions (slurries). On the other hand, Comparative Examples 5, which did not contain component (a), and Comparative Examples 6 to 8, which did not contain component (c), failed to yield dispersions. Comparative Example 9, which contained polyether-modified silicone that could be incorporated into water systems, had a powdery finish and poor spreadability.

[0141] Dispersions were prepared based on the compositions and dispersion methods shown in Table 4 below. The preparability of the above dispersions was evaluated.

[0142] [Table 4]

[0143] (Note 1) The zinc oxide particles treated with hydrated silica (INCI: Hydrated Silica) and hydrogenated polydimethylsiloxane (INCI: Hydrogen Dimethicone) had a number-average first-order particle size of 20 nm, determined by image analysis of transmission electron microscopy images (based on the average diameter of 200 particles determined by image analysis of transmission electron microscopy images). (Note 2) The zinc oxide particles treated with hydrated silica (INCI: Hydrated Silica) and hydrogenated polydimethylsiloxane (INCI: Hydrogen Dimethicone) had a number-average first-order particle size of 35 nm, determined by image analysis of transmission electron microscopy images (based on the average diameter of 200 particles determined by image analysis of transmission electron microscopy images). (Note 3) Polyglyceryl-3-disiloxane (INCI: Polyglyceryl-3-disiloxane Dimethicone) As shown in Table 4, dispersions were obtained in Examples 11-18 of the present invention, regardless of whether a high-pressure disperser or a bead mill was used. The obtained dispersions were rated "A" in the above dispersion preparability test, indicating that they were all dispersions with good and stable water dispersibility, and also exhibited excellent makeup effect and coating properties.

[0144] [Reference Example] Based on the composition shown in Table 5 below, a dispersion was prepared using the same method as in Example 1. A feasibility test was then conducted on the above dispersion.

[0145] [Table 5]

[0146] (Note 1) Titanium oxide particles treated with hydrated silica (INCI: Hydrated Silica) and hydrogenated polydimethylsiloxane (INCI: Hydrogen Dimethicone) have a number-average primary particle size of 15 nm. (Note 2) Polyglyceryl-3-disiloxane (INCI: Polyglyceryl-3-disiloxane Dimethicone) (Note 3) PEG-9 polydimethylsiloxane (Indicating name (INCI: PEG-9 Dimethicone)) [Examples 19-21, Comparative Examples 10 and 11] Prepare the O / W cream according to the formula shown in Table 6 below. Evaluate the resulting O / W cream as follows.

[0147] [Table 6]

[0148] (Note 1) Manufactured by Shin-Etsu Chemical Co., Ltd.: A cyclopentasiloxane dispersion of 45% titanium dioxide particles treated with aluminum hydroxide (INCI: Hydrated Alminium) and stearic acid (INCI: Stearic Acid), with a number-average primary particle size of 20 nm. (Note 2) Zinc oxide particles treated with hydrated silica (INCI: Hydrated Silica) and hydrogenated polydimethylsiloxane (INCI: Hydrogen Dimethicone) have a number-average primary particle size of 35 nm. (Note 3) Titanium oxide particles treated with hydrated silica (INCI: Hydrated Silica) and hydrogenated polydimethylsiloxane (INCI: Hydrogen Dimethicone) have a number-average primary particle size of 15 nm. (Note 4) Polyglyceryl-3-disiloxane (INCI: Polyglyceryl-3-disiloxane Dimethicone) [Manufacturing Method] A: Mixed ingredients (2).

[0149] B: Mixed ingredients (3).

[0150] C: Emulsify the composition obtained in A by adding the composition obtained in B.

[0151] D: Add (1) to the emulsion obtained in C and mix to obtain O / W cream.

[0152] [Transparency evaluation, user experience evaluation] Ten professional evaluators assessed the transparency and feel (non-stickiness) of cosmetic materials during application based on the following evaluation criteria. The results were determined based on the average of the ten evaluators' assessments, according to the following judgment criteria.

[0153] [Evaluation Criteria] Set the following benchmark: 5 points: Very good 4 points: Good 3 points: Average 2 points: Slightly poor 1 point: Poor The average score is determined according to the following criteria.

[0154] [Judgment Criteria] A: Average score above 4.5 B: Average score of 3.5 or higher but less than 4.5 C: Average score of 2.5 or higher but less than 3.5 D: Average score less than 2.5 points Set "B" and above as qualified.

[0155] [Water Resistance Evaluation] Evaluate the water resistance of cosmetic materials during application according to the following evaluation criteria. Determine the results according to the following criteria.

[0156] [Judgment Criteria] A: It won't come off even after rinsing under running water for 1 minute. C: It will come off after rinsing with running water for 1 minute. Set "A" as qualified.

[0157] As shown in Table 6, Examples 19-21, which used the aqueous dispersion of the present invention, exhibited superior transparency, usability, and water resistance. On the other hand, Comparative Example 10, which used the dispersion of Comparative Example 9, had poor usability and water resistance. Comparative Example 11, whose overall composition of the cosmetic material was the same as Example 19 but did not form the aqueous dispersion of the present invention, had poor transparency and usability. Furthermore, Examples 20 and 21 both demonstrated superior transparency, usability, and water resistance, and due to the extensive incorporation of (e) titanium dioxide microparticles, achieved a UV shielding effect over a wide range of UVA-B. In particular, Example 21, which incorporated (e) titanium dioxide microparticles into the oil phase, showed superior usability and stability compared to Example 20.

[0158] [Example 22] Water-in-oil type sunscreen

[0159] (Note 1) Manufactured by Shin-Etsu Chemical Co., Ltd.: A mixture of 90-96% cyclopentasiloxane + 4-10% (polydimethylsiloxane / vinyl polydimethylsiloxane) crosslinked polymer. (Note 2) Manufactured by Shin-Etsu Chemical Co., Ltd.: A mixture of 70-80% polydimethylsiloxane + 20-30% by weight of crosslinked polymer of (polydimethylsiloxane / vinyl polydimethylsiloxane). (Note 3) Manufactured by Shin-Etsu Chemical Co., Ltd.: A mixture of 60-70% by weight of coconut oil alcohol (octanoate / capric acid ester) + 30-40% by weight of crosslinked polymer (polydimethylsiloxane / vinyl polydimethylsiloxane). (Note 4) Manufactured by Shin-Etsu Chemical Co., Ltd.: Polyglycerol-3-disiloxane polydimethylsiloxane (Note 5) Manufactured by Shin-Etsu Chemical Co., Ltd.: Polyglycerol-3-dimethylsiloxane-3-dimethylsiloxane (Note 6) Manufactured by Clariant: Aristoflex AVC (Note 7) Manufactured by Seppic: Simulgel 600 (Manufacturing method) A: Mix components 1 through 5 evenly.

[0160] B: Mix components 6 to 12 evenly.

[0161] C: Add A to B for emulsification, add ingredients 13 and 14 and disperse evenly.

[0162] The water-in-oil sunscreen obtained as described above is excellent in terms of transparency, feel, and water resistance.

[0163] [Example 23] Water-in-oil type base cream

[0164] (Note 1) Manufactured by Shin-Etsu Chemical Co., Ltd.: (Vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane) crosslinked polymer (Note 2) Shin-Etsu Chemical Industry Co., Ltd.: KF-9909 Processed Coloring Inorganic Pigment, W: White, R: Red, Y: Yellow, B: Black (Note 3) Manufactured by SEPPIC: SIMULGEL EG (Manufacturing method) A: Mix components 1 to 6 evenly, and mix component 7 until it is uniform.

[0165] B: Heat to dissolve components 8-12, mix component 13 and make it uniform.

[0166] C: Mixed components 14-19, then subjected to roller treatment.

[0167] D: Add the substance obtained in step C above to the substance obtained in step B above, and mix them evenly.

[0168] E: Add the substance obtained in step D above after heating to the substance obtained in step A above after heating, and emulsify it evenly.

[0169] F: After cooling the material obtained in step E above to room temperature, add components 20 and 21 and mix them evenly.

[0170] The water-in-oil base cream obtained as described above has high stability, a pleasant, non-sticky feel, and excellent water resistance.

[0171] [Example 24] Aqueous Gel

[0172] (Note 1) Manufactured by Shin-Etsu Chemical Co., Ltd.: Hydrophilic treatment powder of crosslinked polymers of (vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane). (Manufacturing method) A: Mix components 1 and 2 evenly.

[0173] B: Mix components 3 to 9 evenly.

[0174] C: Add the substance obtained in step A above to the substance obtained in step B above and mix them evenly.

[0175] D: After degassing the substance obtained in step C above, fill it into a container to obtain an aqueous gel.

[0176] The aqueous gel obtained as described above exhibits excellent transparency, user experience, and water resistance. Component 1 demonstrates excellent stability and is easy to handle and dispense.

[0177] [Example 25] Water-in-oil type sunscreen lotion

[0178] (Note 1) Manufactured by Shin-Etsu Chemical Co., Ltd.: Polyglycerol-3-disiloxane, polydimethylsiloxane (Note 2) Aqueous dispersion of crosslinked polymer (polydimethylsiloxane / vinyl polydimethylsiloxane) manufactured by Shin-Etsu Chemical Co., Ltd. (Note 3) Manufactured by SEPPIC: SIMULGEL EG (Note 4) Aqueous dispersion of (vinyl polydimethylsiloxane / lauryl polydimethylsiloxane) crosslinked polymer manufactured by Shin-Etsu Chemical Co., Ltd. (Note 5) Manufactured by Shin-Etsu Chemical Co., Ltd.: 50% trimethylsiloxysilicate cyclopentasiloxane melt (Note 6) Manufactured by Shin-Etsu Chemical Co., Ltd.: Diphenylsiloxyphenyl polytrimethylsiloxane (Note 7) Manufactured by Shin-Etsu Chemical Co., Ltd.: PEG-11 methyl ether polydimethylsiloxane (Manufacturing method) A: Use a roller to evenly disperse components 1 to 4.

[0179] B: Heat components 5-11 to 85°C, add the mixture obtained in A, and mix evenly.

[0180] C: Heat components 12-19 to 85°C and mix them evenly.

[0181] D: Add the mixture obtained in C to the mixture obtained in B, emulsify at 85°C, and slowly cool while stirring to obtain an oil-in-water sunscreen lotion.

[0182] The aqueous gel obtained as described above exhibits excellent transparency, user experience, and water resistance. The dispersion of the present invention prepared by manufacturing method A demonstrates excellent stability and is easy to handle and feed.

[0183] [Example 26] W / O Makeup Base

[0184] (Note 1) Manufactured by Shin-Etsu Chemical Co., Ltd.: A mixture of 15-25% diphenylsiloxyphenyl polytrimethylsiloxane + (polydimethylsiloxane / (PEG-10 / 15)) crosslinked polymer. (Note 2) Manufactured by Shin-Etsu Chemical Co., Ltd.: A mixture of 10-20% diphenylsiloxyphenyl polytrimethylsiloxane + (polydimethylsiloxane / phenyl vinyl polydimethylsiloxane) crosslinked polymer. (Note 3) Manufactured by Shin-Etsu Chemical Co., Ltd.: Cetyl PEG / PPG-10 / 1 polydimethylsiloxane (Note 4) Manufactured by Shin-Etsu Chemical Co., Ltd.: Diphenylsiloxyphenyl polytrimethylsiloxane (Note 5) Manufactured by Shin-Etsu Chemical Co., Ltd.: Ethyl polytrimethylsiloxane (Note 6) Manufactured by Shin-Etsu Chemical Co., Ltd.: (Vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane) crosslinked polymer (Note 7) Shin-Etsu Chemical Co., Ltd.: Cyclopentasiloxane dispersion of 45% particulate titanium dioxide (Note 8) Manufactured by Shin-Etsu Chemical Co., Ltd.: Polyglycerol-3-disiloxane polydimethylsiloxane (Manufacturing method) A: Mix components 1 to 10 evenly.

[0185] B: After mixing components 15 to 17, add pre-mixed components 12 and 13, add component 14, and disperse using a homogenizer.

[0186] C: The mixture obtained in B will be mixed evenly with component 18.

[0187] D: Add the mixture obtained in C to the mixture obtained in A to emulsify.

[0188] E: Add component 11 to the mixture obtained in D and mix thoroughly.

[0189] The resulting W / O primer exhibits high stability, a pleasant, non-sticky feel, and excellent water resistance.

[0190] [Example 27] Water-in-oil type makeup primer

[0191] (Note 1) Manufactured by Shin-Etsu Chemical Co., Ltd.: 30% by weight of cyclopentasiloxane melt of (acrylate / polydimethylsiloxane) copolymer (Note 2) Manufactured by Shin-Etsu Chemical Co., Ltd.: A mixture of 80-90% by weight of polydimethylsiloxane + 10-20% by weight of crosslinked polymer of (polydimethylsiloxane / vinyl polydimethylsiloxane). (Note 3) Manufactured by Shin-Etsu Chemical Co., Ltd.: Diphenylsiloxyphenyl polytrimethylsiloxane (Note 4) Manufactured by Shin-Etsu Chemical Co., Ltd.: Polyglycerol-3-disiloxane polydimethylsiloxane (Note 5) Manufactured by Shin-Etsu Chemical Co., Ltd.: PEG-10 polydimethylsiloxane (Note 6) Manufactured by SEPPIC: SIMULGEL EG (Manufacturing method) A: Mix components 1 to 4 evenly.

[0192] B: Use a homogenizer to evenly disperse components 5-8.

[0193] C: Mix the mixture obtained from components 9-18 and B evenly.

[0194] D: Add the mixture obtained in A to the mixture obtained in C and emulsify to obtain an O / W primer.

[0195] The water-in-oil primer obtained as described above exhibits high stability, a pleasant, non-sticky feel, and excellent water resistance. The dispersion obtained in step B demonstrates excellent stability and is easy to handle and dispense.

[0196] [Example 28] Water-in-oil type foundation liquid

[0197] (Note 1) Manufactured by Shin-Etsu Chemical Co., Ltd.: (acrylate / stearyl acrylate / polydimethylsiloxane methacrylate) copolymer (Note 2) Manufactured by Shin-Etsu Chemical Co., Ltd.: PEG-9 polydimethylsiloxane (Note 3) Manufactured by Shin-Etsu Chemical Co., Ltd.: Triethoxyoctylsilane treatment (Note 4) Manufactured by Shin-Etsu Chemical Co., Ltd.: Polyglycerol-3-disiloxane polydimethylsiloxane (Manufacturing method) A: Mix components 11-13 with a portion of component 22, add components 14-17 and disperse evenly, then heat.

[0198] B: Mix components 1-8 and heat evenly to dissolve.

[0199] C: Mix components 9-10, the remainder of component 22, component 23, and component 25, and heat.

[0200] D: Disperse components 18-21 using a high-pressure disperser.

[0201] E: Add the mixture obtained in B to the mixture obtained in C under stirring and emulsify, add the mixture obtained in A, and further add the mixture obtained in D and component 24 to obtain an oil-in-water foundation.

[0202] The water-in-oil foundation liquid obtained as described above exhibits high stability, a pleasant, non-sticky feel, and excellent water resistance. The dispersion obtained in step D demonstrates excellent stability and is easy to handle and dispense.

[0203] [Example 29] Water-in-oil sunscreen lotion

[0204] (Note 1) Manufactured by Shin-Etsu Chemical Co., Ltd.: A mixture of 70-80% by weight of polydimethylsiloxane + 20-30% by weight of crosslinked polymer of (polydimethylsiloxane / (PEG-10 / 15)). (Note 2) Manufactured by Shin-Etsu Chemical Co., Ltd.: A mixture of 65-75% by weight of octyl polymethylsiloxane + 25-35% by weight of (polydimethylsiloxane / polyglycerol-3) crosslinked polymer. (Note 3) Manufactured by Shin-Etsu Chemical Co., Ltd.: A mixture of 90-96% by weight of cyclopentasiloxane + 4-10% by weight of (polydimethylsiloxane / vinyl polydimethylsiloxane) crosslinked polymer. (Note 4) Manufactured by Shin-Etsu Chemical Co., Ltd.: PEG-9 polydimethylsiloxane (PEG-9) (Note 5) Manufactured by Shin-Etsu Chemical Co., Ltd.: Octyl polymethylsiloxane (Note 6) Shin-Etsu Chemical Co., Ltd.: 40% by weight of particulate titanium dioxide cyclopentasiloxane dispersion (Note 7) Manufactured by Shin-Etsu Chemical Co., Ltd.: 60% by weight polydimethylsiloxane dispersion of particulate zinc oxide (Manufacturing method) A: Mix components 1 to 8 evenly.

[0205] B: Mix components 11 to 16 evenly.

[0206] C: Add the mixture obtained in A to the mixture obtained in B under stirring and emulsify. Add ingredients 9 and 10 to obtain a water-in-oil sunscreen lotion.

[0207] The water-in-oil sunscreen emulsion obtained as described above exhibits high stability, high transparency, a pleasant, non-sticky feel, and excellent water resistance. Component 13 demonstrates excellent stability and is easy to handle and dispense.

[0208] [Example 30] Water-in-oil type sunscreen lotion

[0209] (Note 1) Manufactured by Shin-Etsu Chemical Co., Ltd.: Polyglycerol-3-disiloxane, polydimethylsiloxane (Note 2) Manufactured by Shin-Etsu Chemical Co., Ltd.: Simethicone emulsion (Note 3) Manufactured by Shin-Etsu Chemical Co., Ltd.: Diphenylsiloxyphenyl polytrimethylsiloxane (Note 4) Manufactured by Shin-Etsu Chemical Co., Ltd.: PEG-11 methyl ether polydimethylsiloxane (Note 5) Manufactured by Shin-Etsu Chemical Co., Ltd.: (Polydimethylsiloxane / vinyl polydimethylsiloxane) crosslinked polymer emulsion (Manufacturing method) A: Use a high-pressure disperser to evenly disperse components 1 to 5.

[0210] B: Mix components 6-8 evenly.

[0211] C: Mix the mixture obtained from components 9-19 and A evenly.

[0212] D: Add the mixture obtained in B to the mixture obtained in C and emulsify it. Add component 20 and mix evenly.

[0213] E: Add component 21 to the mixture obtained in D and mix thoroughly.

[0214] The water-in-oil sunscreen emulsion obtained as described above exhibits high stability, high transparency, a pleasant, non-sticky feel, and excellent water resistance. The dispersion obtained in A demonstrates excellent stability and is easy to handle and dispense.

[0215] [Example 31] Water-in-oil type sunscreen lotion

[0216] (Note 1) Shin-Etsu Chemical Industry Co., Ltd.: KF-9909 for treating titanium dioxide (Note 2) Shin-Etsu Chemical Co., Ltd. manufactured: AES-3083 (triethoxyoctylsilane) treated particulate zinc oxide (number average primary particle size: 50nm) (Note 3) Manufactured by Shin-Etsu Chemical Co., Ltd.: Polyglycerol-3-disiloxane polydimethylsiloxane (Note 4) Aqueous dispersion of crosslinked polymer (polydimethylsiloxane / vinyl polydimethylsiloxane) manufactured by Shin-Etsu Chemical Co., Ltd. (Note 5) Manufactured by SEPPIC: SIMULGEL EG (Note 6) Manufactured by Shin-Etsu Chemical Co., Ltd.: Hydrophilic treatment powder of crosslinked polymers of (vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane). (Note 7) Manufactured by Shin-Etsu Chemical Co., Ltd.: 50% trimethylsiloxysilicate cyclopentasiloxane melt (Note 8) Manufactured by Shin-Etsu Chemical Co., Ltd.: Diphenylsiloxyphenyl polytrimethylsiloxane (Note 9) Manufactured by Shin-Etsu Chemical Co., Ltd.: PEG-11 methyl ether polydimethylsiloxane (Manufacturing method) A: Use rollers to evenly disperse components 1 to 5.

[0217] B: Heat components 6-12 to 85°C, add the mixture obtained in A, and mix evenly.

[0218] C: Heat components 13-20 to 85°C and mix them evenly.

[0219] D: Add the mixture obtained in C to the mixture obtained in B, emulsify at 85°C, and slowly cool while stirring to obtain an oil-in-water sunscreen lotion.

[0220] The water-in-oil sunscreen emulsion obtained as described above exhibits high stability, a pleasant, non-sticky feel, and excellent water resistance. The dispersion of the present invention prepared by manufacturing method A demonstrates excellent dispersibility, particularly in aqueous media, as well as superior water resistance and a pleasant feel, and is easy to handle and dispense.

[0221] It exhibits high stability, high transparency, a pleasant, non-sticky feel, and excellent water resistance. The dispersion obtained in A demonstrates excellent stability and is easy to handle and feed.

[0222] [Example 32] Water-in-oil type sunscreen lotion

[0223] (Note 1) Manufactured by Shin-Etsu Chemical Co., Ltd.: Polyglycerol-3-disiloxane, polydimethylsiloxane (Note 2) Manufactured by Shin-Etsu Chemical Co., Ltd.: Simethicone emulsion (Note 3) Manufactured by Shin-Etsu Chemical Co., Ltd.: Diphenylsiloxyphenyl polytrimethylsiloxane (Manufacturing method) A: Use a bead mill to evenly disperse components 1 to 5.

[0224] B: Mix components 6 to 11 evenly.

[0225] C: After dispersing component 18 in component 19, uniformly mix the mixture obtained from components 12-17 and A.

[0226] D: Add the mixture obtained in B to the mixture obtained in C and emulsify it. Add component 20 and mix evenly.

[0227] The water-in-oil sunscreen emulsion obtained as described above exhibits high stability, high transparency, a pleasant, non-sticky feel, and excellent water resistance. The dispersion obtained in A demonstrates excellent stability and is easy to handle and dispense.

Claims

1. An aqueous dispersion, characterized in that, contain: (a) Hydrophobic zinc oxide microparticles with a number-average primary particle size of 8–200 nm, obtained by image analysis of transmission electron microscopy images, and which are obtained by hydrophobicating zinc oxide particles with organosilicon: 10–80% by mass. (b) Aqueous components having two or more alcoholic hydroxyl groups: 1–50% by mass; and (c) Polyglycerol-modified organosilicon dissolved in component (b): 1-20 by mass.

2. The aqueous dispersion according to claim 1, wherein, The total content of components (a), (b) and (c) in the aqueous dispersion is more than 90% by mass.

3. The aqueous dispersion according to claim 1, wherein, (a) The composition is hydrophobic micro-zinc oxide obtained by treating hydrated silica particles with organosilicon to coat zinc oxide particles.

4. The aqueous dispersion according to claim 1, wherein, (a) The organosilicon in the ingredient is triethoxyoctylsilane.

5. The aqueous dispersion according to claim 1, wherein, (b) The component is an aqueous component with two alcohol hydroxyl groups.

6. The aqueous dispersion according to claim 1, wherein, (c) The component is insoluble in water.

7. The aqueous dispersion according to claim 1, wherein, (c) The component is polyglycerol-3 disiloxane polydimethylsiloxane.

8. The aqueous dispersion according to claim 1, wherein, The mass ratio of the content of component (c) to the content of component (b) is 0.2 to 0.

9.

9. The aqueous dispersion according to claim 1, wherein, The aqueous dispersion further contains: (d) Water: 8-82% by mass The total content of components (a), (b), (c) and (d) in the aqueous dispersion is more than 90% by mass.

10. A cosmetic material, characterized in that, The cosmetic material is formulated with the aqueous dispersion as described in any one of claims 1 to 9.

11. The cosmetic material according to claim 10, wherein, The cosmetic material is an emulsion containing an aqueous dispersion in an aqueous phase, and without the presence of (e) hydrophobic titanium dioxide microparticles with a number-average primary particle size of 8–200 nm obtained by image analysis of transmission electron microscopy images, which have undergone hydrophobic treatment.

12. The cosmetic material according to claim 10, wherein, The cosmetic material is an emulsion containing an aqueous dispersion in the aqueous phase and hydrophobic titanium dioxide microparticles (e) with a number-average primary particle size of 8–200 nm, obtained by image analysis of transmission electron microscopy, in the oil phase.

13. The cosmetic material according to claim 10, wherein, The cosmetic material is an emulsion containing an aqueous dispersion and a hydrophobic titanium dioxide microparticle dispersion, wherein the hydrophobic titanium dioxide microparticle dispersion contains: (e) Hydrophobic titanium oxide microparticles with a number-average primary particle size of 8–200 nm obtained by image analysis of transmission electron microscopy images and after hydrophobic treatment; (b) Aqueous components having two or more alcoholic hydroxyl groups; and (c) Polyglycerol-modified organosilicon dissolved in component (b).

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