JP2017137252A - Aqueous dispersion, cosmetic and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an aqueous dispersion in which an inorganic powder having a water-repellent organic surface treatment is stably blended. An aqueous dispersion containing a water-repellent organic surface-treated inorganic powder (A), a nonionic surfactant (B), a polyhydric alcohol (C), and a mucopolysaccharide (D). [Selection diagram] None

Description

The present invention relates to an aqueous dispersion, a cosmetic, and a method for producing the same.

Inorganic powders such as fine particles of zinc oxide and titanium oxide having a particle size of several tens to 100 nm are often used as additives in sunscreen cosmetics, outdoor inks, food packaging materials and the like because of their characteristics. If these powders are in an untreated state, they may flow due to sweat or rain because the surface is hydrophilic. For this reason, in particular in applications such as cosmetics, the surface of the particles is often subjected to water repellent treatment with silicone or metal soap.

On the other hand, since inorganic particles generally tend to agglomerate primary particles, they are used by dispersing them in a dispersion medium for the purpose of fully extracting visible light transparency and ultraviolet shielding properties of fine particle zinc oxide and fine particle titanium oxide. Is widely performed (Patent Documents 1 and 2). However, in the conventional dispersion, the water repellent powder is usually dispersed in oil, and the hydrophilic powder is dispersed in water, alcohol, glycol or the like.

In recent years, since there is a tendency to prefer O / W type emulsified cosmetics that have a fresh feel and excellent usability, a technique for adding the above-described inorganic powder subjected to water repellent treatment to an aqueous phase has been studied. For example, Patent Document 3 discloses a dispersion in which inorganic particles that have been well subjected to water repellency treatment by containing a dispersant are uniformly dispersed in an aqueous medium. It is also possible to formulate an O / W emulsion type sunscreen agent by blending such a dispersion.

In particular, in the dosage form called gel type, which contains a lot of water, various polymer thickeners are used for the purpose of increasing the viscosity, and in particular, the anionic high viscosity increases due to charge repulsion of anionic groups. Molecules are suitable for general use because they are non-thready and have a fresh feel and can effectively thicken.

However, it is known that the fine particle inorganic powder as described above reacts with an anionic polymer to cause a decrease in viscosity, aggregation, and the like, and as a result, decreases the stability of the entire cosmetic. For this reason, even when the water repellent inorganic powder and the anionic polymer thickener are used in combination, there has been a demand for the development of a water-based cosmetic that hardly causes problems such as viscosity reduction and aggregation.

JP-A-11-147714 Japanese Patent Laid-Open No. 2004-2877 International Publication No. 2013/18827

The object of the present invention is to stably mix inorganic powders having a water repellent organic surface treatment, and improve the stability of the cosmetic itself even when combined with an anionic polymer thickener when blended into the cosmetic. It is to obtain an aqueous dispersion that has no effect. In this aqueous dispersion, since the dispersion medium is water, the cosmetic obtained by using this is excellent in the feeling of use, and furthermore, since the dispersion state of the inorganic particles is good, visible light transparency and ultraviolet light The shielding property can be sufficiently extracted.

The present invention comprises an inorganic powder (A) that has been subjected to a water-repellent organic surface treatment, a nonionic surfactant (B), a polyhydric alcohol (C), and a mucopolysaccharide (D). It is an aqueous dispersion.
The mucopolysaccharide (D) is preferably blended in an amount of 0.01 to 10 parts by weight with respect to 100 parts by weight of the inorganic powder (A) subjected to the water repellent organic surface treatment.

The mucopolysaccharide (D) is preferably hyaluronic acid and / or a sodium salt thereof.
The present invention includes an inorganic powder (A), a nonionic surfactant (B), a step of mixing a polyhydric alcohol (C) and water (1), and a step of mixing a mucopolysaccharide (D) (2). It is also the manufacturing method of the aqueous dispersion containing the above-mentioned.

The present invention also provides a cosmetic obtained by the production method including the step (3) of mixing the aqueous dispersion and other cosmetic ingredients including the anionic polymer thickener (E). is there.
Furthermore, this invention is also a manufacturing method of the cosmetics containing the process (3) which mixes the said aqueous dispersion and the other cosmetic ingredients containing anionic polymer thickener (E).
The cosmetic is preferably an oil-in-water emulsified cosmetic.

The aqueous dispersion of the present invention comprises a water-repellent organic surface-treated inorganic powder (A), a nonionic surfactant (B), a polyhydric alcohol (C), and a mucopolysaccharide (D). Thus, the inorganic powder (A) subjected to the water-repellent organic surface treatment with such a composition can be stably stored and transported, and furthermore, a cosmetic can be stably produced. When obtaining a cosmetic using such an aqueous dispersion, it can be used in combination with an anionic polymer thickener, and in this case as well, stability reduction such as viscosity reduction and aggregation is unlikely to occur, and stable Cosmetics can be provided.

The aqueous dispersion of the present invention contains a water-repellent organic surface-treated inorganic powder (A), a nonionic surfactant (B), a polyhydric alcohol (C), and a mucopolysaccharide (D). Is an aqueous dispersion characterized by In addition to the nonionic surfactant (B) and the polyhydric alcohol (C), the inorganic powder (A) subjected to the water-repellent organic surface treatment by using the mucopolysaccharide (D) in combination with the aqueous medium It can be dispersed more stably inside.

The aqueous dispersion of the present invention has improved dispersibility in the aqueous phase by adapting the nonionic surfactant (B) to the water-repellent treated surface of the inorganic powder (A) treated with the water-repellent organic surface. Furthermore, it is presumed that the action as a protective colloid is more suitably expressed when mucopolysaccharide (D) adheres to the surface. That is, since the components (A) to (D) are once mixed at a relatively high concentration, the protective colloid action by the mucopolysaccharide (D) can be easily obtained.

Further, when the inorganic powder (A) treated with water-repellent organic surface is stored and transported, the aqueous dispersion is used as a cosmetic raw material in the state of the aqueous dispersion containing the above (A) to (D). It is also preferable to conduct a transaction as That is, since the aqueous dispersion has excellent stability, it is desirable as a form for storing the inorganic powder (A) subjected to the water repellent organic surface treatment without causing aggregation or sedimentation. Is.

The inorganic powder used as the base particles of the inorganic powder (A) subjected to the water-repellent organic surface treatment is not limited, and zinc oxide, titanium oxide, cerium oxide, iron oxide, barium sulfate, calcium carbonate, silica, Examples include aluminum hydroxide, alumina, boron nitride, talc, mica, kaolin and the like. As the inorganic powder, an inorganic powder having ultraviolet absorption / scattering ability such as titanium oxide, zinc oxide, iron oxide, cerium oxide and a composite thereof is particularly preferable. The composite refers to a surface-treated powder, a powder in which other inorganic particles are dispersed inside an inorganic powder, and the like.
Since the inorganic powder having an ultraviolet shielding effect is widely used in cosmetic applications, it is also preferable in terms of easy blending into water-based cosmetics. Of these, zinc oxide and titanium oxide are particularly preferable.
These inorganic powders may be used in combination of two or more kinds of inorganic powders.

The inorganic powder serving as the substrate particles may be a composite powder whose surface is coated with another inorganic material. The surface treatment material in that case may be a known inorganic surface treatment material, and examples thereof include zinc oxide, titanium oxide, cerium oxide, iron oxide, barium sulfate, hydrous silicic acid, silica, aluminum hydroxide, and alumina. The coating amount is preferably 1% by weight to 30% by weight with respect to the whole inorganic powder.

When the inorganic powder serving as the base particle is an ultraviolet shielding particle, the average particle size is preferably 10 to 200 nm. Ultraviolet shielding particles having such a particle diameter are particularly preferred in that they have high visible light transparency and a suitable ultraviolet shielding region. On the other hand, when the particle diameter exceeds 200 nm, not only the visible light transparency is deteriorated, but also the ultraviolet shielding ability may be lowered. Furthermore, it is not preferable that the particle diameter is less than 10 nm in that the ultraviolet shielding ability may be lowered. Further, when the inorganic powder is not an ultraviolet shielding particle or does not require ultraviolet shielding properties, the particle diameter may be an optimum size for using the particle. The particle size of the inorganic powder was measured by a method of measuring the particle size of 200 particles randomly selected with an electron microscope and calculating the average of the primary particle sizes.

The shape of the inorganic powder serving as the substrate particles is not particularly limited, and any shape such as a spherical shape, a rod shape, a needle shape, a spindle shape, or a plate shape can be used. In the case of rod-like, needle-like, and spindle-like particles, the average particle diameter is defined by the length on the short axis side, and in the case of a plate-like particle, the average of the diagonal lengths of the surfaces is defined.

The kind of the water repellent organic surface treatment in the inorganic powder (A) subjected to the water repellent organic surface treatment is not particularly limited, and a known surface treatment can be performed. The water-repellent organic surface treatment is a treatment for reducing the affinity of the inorganic powder surface with water, and the surface treatment with a material that is easily dissolved in water or a material that is dispersed in water after the treatment is performed according to the present invention. Does not fall under “Water-repellent treatment”.

More specifically, examples of the water-repellent organic surface treatment include treatment with methyl hydrogen polysiloxane, dimethyl polysiloxane, alkylsilane, alkyl titanate, metal soap, amino acid, and the like.

The water repellent organic surface treatment is preferably a treatment with a reactive surface treatment agent such as silicone, silane treatment agent, titanate treatment agent or the like. The use of a reactive agent as the surface treatment agent is particularly preferable in that the surface treatment agent is not released from the inorganic powder. If the surface treatment agent is liberated, it is not preferable because aggregation of inorganic powder occurs.

Examples of the silicone include known silicones having a hydrogen-silicon bond, such as dimethylpolysiloxane, methylhydrogenpolysiloxane, and (dimethicone / methicone) copolymer. Also, triethoxysilylethyl polydimethylsiloxyethyl dimethicone (KF-9908 manufactured by Shin-Etsu Chemical Co., Ltd.), triethoxysilylethyl polydimethylsiloxyethylhexyl dimethicone (KF-9909 manufactured by Shin-Etsu Chemical Co., Ltd.) having an alkoxy group-silicon bond as a reactive group. And so on.
Examples of the silane-based treatment agent include a silylating agent and a silane coupling agent into which an organic group is introduced, and examples thereof include triethoxycaprylylsilane.
Examples of the titanate treatment agents include alkyl titanates, pyrophosphoric acid type titanates, phosphorous acid type titanates, amino acid type titanates, and titanium coupling agents. More specifically, for example, titanium isostearate (manufactured by Matsumoto Fine Chemical Co., Ltd., ORGATICS TC-800) can be mentioned.

In the water-repellent organic treatment of the inorganic powder, the water-repellent organic treatment with the treatment agent is preferably performed at a ratio of 2 to 12% by weight with respect to the total amount of the inorganic powder after the treatment. . If it is less than 2% by weight, it is not preferable from the viewpoint that the water repellency is insufficient, and if it exceeds 12% by weight, the effect of water repellency is saturated and only the cost is increased or the touch is deteriorated. Absent. The water-repellent treatment is more preferably performed at a ratio of 3 to 10% by weight.

The water-repellent organic surface-treated inorganic powder (A) is preferably contained in the aqueous dispersion at a ratio of 10 to 70% by weight. If it is less than 10% by weight, the powder concentration is too low. It is not preferable in that it is necessary to increase the amount of the dispersion to be blended, and if it exceeds 70% by weight, the viscosity of the dispersion is too high and the fluidity is lost, so that it is difficult to blend. The upper limit is more preferably 60% by weight. The lower limit is more preferably 15% by weight and even more preferably 20% by weight.

The aqueous dispersion of the present invention contains a nonionic surfactant (B). This makes it possible to uniformly disperse the inorganic particles that have been satisfactorily water repellent treated in the aqueous medium.
Nonionic surfactants include polyoxyalkylene alkyl ether, polyoxyalkylene fatty acid ester, polyoxyalkylene sorbitan fatty acid ester, polyoxyalkylene castor oil, polyoxyalkylene hydrogenated castor oil, polyoxyalkylene sorbitol tetra fatty acid ester. Glycerin fatty acid ester, sorbitan fatty acid ester, polyglycerin fatty acid ester, sucrose fatty acid ester, organopolysiloxane having a polyoxyalkylene group, organopolysiloxane having a polyglycerin group, organopolysiloxane having a sugar chain, and the like.

Among these, polyoxyalkylene fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, and organopolysiloxanes having a polyoxyalkylene group are preferably used as nonionic surfactants.

The nonionic surfactant (B) is a nonionic surfactant (nonionic interface) that is transparently dissolved or slightly turbid at 35 ° C. when mixed with 1,3-butylene glycol at a concentration of 20% by weight. When the activator (B) is in the form of a paste or solid at room temperature, it is preferably heated and homogenized and then confirmed at 35 ° C.). By using such a nonionic surfactant, the effect that the layer by a nonionic surfactant can be efficiently made on the particle | grain surface is acquired.

The “transparent dissolution” means that the obtained mixture has a haze value of less than 10 at an optical path length of 10 mm at 35 ° C., and “slightly turbid” means the optical path of the obtained mixture at 35 ° C. It means that the haze value at a length of 10 mm is 10 or more and the total light transmittance is 30% or more.

Furthermore, the nonionic surfactant (B) is a nonionic surfactant that is insoluble or cloudy at 35 ° C. when mixed in water at a concentration of 20% by weight (the nonionic surfactant is a paste at room temperature). In the case of a solid to a solid, it is preferably heated and homogenized and then confirmed at 35 ° C.). When two or more kinds of nonionic surfactants are used in combination, the nonionic surfactant mixed in the aqueous dispersion is insoluble when the above-described test is performed on the nonionic surfactant mixed. It is necessary to become cloudy.

In the present specification, “insoluble” means a state in which undissolved residue is produced even when mixed, or phase separation occurs after 1 hour even though it appears to be turbid. The term “white turbidity” means that the resulting mixture has a haze value of 10 or more at an optical path length of 10 mm at 35 ° C. and a total light transmittance of less than 30%.

The nonionic surfactant (B) preferably has an HLB value of 10 to 17. Outside this range, poor dispersion of the powder occurs, which may affect various physical properties such as ultraviolet shielding properties. In the present invention, W.C. C. It is obtained by the following formula defined by Grifinn.
N _HLB = (E + P) / 5
(N _HLB : HLB value, E:% by weight of polyoxyethylene part with respect to the whole nonionic surfactant molecule, P:% by weight of polyhydric alcohol part with respect to the whole nonionic surfactant molecule)

The nonionic surfactant (B) is preferably contained in the aqueous dispersion at a ratio of 1 to 10% by weight, and if it is less than 1% by weight, it is difficult for the powder to be compatible with water. It is not preferable, and if it exceeds 10% by weight, it is not preferable in that it is disadvantageous in terms of cost. The upper limit is more preferably 8% by weight. The lower limit is more preferably 1.5% by weight, still more preferably 2% by weight.

The aqueous dispersion of the present invention further contains a polyhydric alcohol (C). Although it does not specifically limit as said polyhydric alcohol, It is especially preferable to use polyhydric alcohols, such as propylene glycol, butylene glycol, dipropylene glycol, pentylene glycol, and hexylene glycol. Two or more compounds from these groups may be used in combination. Of these, pentylene glycol and 1,3-butylene glycol are particularly preferably used. The polyhydric alcohol not only enhances the dispersibility of the water-repellent organic-treated inorganic powder (A) in the aqueous dispersion, but also has an effect as a preservative because it has antibacterial performance.

The polyhydric alcohol (C) is preferably contained in the aqueous dispersion at a ratio of 3 to 10% by weight. If it is less than 3% by weight, it is not preferable in that the stability of the dispersion is remarkably deteriorated. If it exceeds 10% by weight, it is not preferable in that the feel is likely to deteriorate due to the polyhydric alcohol. The upper limit is more preferably 9% by weight. The lower limit is more preferably 3.2% by weight, still more preferably 4% by weight.

The aqueous dispersion of the present invention further contains mucopolysaccharide (D). When the mucopolysaccharide (D) is present in the water-based dispersion together with the inorganic powder (A) having been subjected to the water-repellent organic surface treatment, the mucopolysaccharide (D) acts as a protective colloid so that the inorganic powder has been subjected to the water-repellent organic surface treatment. It became clear that it has the effect | action which improves the stability in the system of (A). Furthermore, even when the aqueous dispersion is used in combination with an anionic polymer thickener, it is possible to suppress deterioration of the aqueous cosmetic due to aggregation, viscosity increase, and the like.

The mucopolysaccharide (D) is not particularly limited, and examples thereof include hyaluronic acid and / or a sodium salt thereof, chondroitin sulfate and / or a sodium salt thereof, and in particular, hyaluronic acid and / or a sodium salt thereof. It is preferable. Specifically, for example, Matsuhiaro HA-P (manufactured by Matsumoto Kosho), Matsuhiaro HA-BG (manufactured by Matsumoto Kosho), Matsuhiaro HA-LP (manufactured by Matsumoto Kosho) can be mentioned.

The mucopolysaccharide (D) is preferably contained in the aqueous dispersion in a proportion of 0.001 to 7% by weight. If it is less than 0.001% by weight, it is not preferable in that the effect of stabilizing the viscosity of the prescription system becomes thin when used in combination with a thickener, and if it exceeds 7% by weight, it may cause a deterioration in feel such as stickiness. It is not preferable in terms. The upper limit is more preferably 3.5% by weight. The lower limit is more preferably 0.005% by weight.

The aqueous dispersion is preferably contained in an amount of 0.01 to 10 parts by weight with respect to 100 parts by weight of the inorganic powder (A) subjected to the water-repellent organic surface treatment for the mucopolysaccharide (D). When it is less than 0.01% by weight, it is not preferable in that the effect of stabilizing the viscosity of the prescription system becomes thin when used in combination with a thickener. It is not preferable in terms. The upper limit is more preferably 5% by weight. The lower limit is more preferably 0.05% by weight.

The aqueous dispersion preferably contains water in a proportion of 3 to 85% by weight with respect to the total amount of the aqueous dispersion. If it is less than 3% by weight, it is not preferable from the viewpoint that the dispersion is solidified and is not liquid, and the dispersed particles are likely to aggregate. It is not preferable in that it reduces the degree of freedom of prescription. The upper limit is more preferably 80% by weight. The lower limit is more preferably 10% by weight.

The aqueous dispersion may further contain a preservative. That is, the dispersion composed of the above components may be spoiled depending on the storage conditions and storage period. In order to prevent such spoilage, a preservative may be added. Such a preservative is not particularly limited, and examples thereof include parabenzoic acid esters such as methyl paraoxybenzoate, piroctone olamine, phenoxyethanol, and capryl sun polyglyceryl-3. Each of these components can be added within a range that exhibits antiseptic performance and does not adversely affect the performance of the nonionic surfactant.

When a preservative is blended in the aqueous dispersion, the preservative is preferably blended at a ratio of 20% by weight or less with respect to the total amount of the aqueous dispersion. If it is less than 0.001% by weight, it is not preferable in that the antibacterial effect is weak, and if it exceeds 15% by weight, it is not preferable in that concerns such as irritation to the skin may occur. The upper limit is more preferably 10% by weight, and still more preferably 5% by weight.

In the aqueous dispersion, the amount of components other than the above-described components (A) to (D), water and preservatives is preferably 20% by weight or less. This is because when the components other than those described above are blended in a large amount, the stability of the aqueous dispersion is likely to be impaired. The blending amount of the components (A) to (D) and the components other than water is more preferably 10% by weight or less, and further preferably 5% by weight or less.

Most preferably, the aqueous dispersion of the present invention does not contain components other than the components (A) to (D), water, and preservatives. This is because mixing other components may adversely affect the stability. In addition, it is not preferable that components that are not desired to be blended may be included when blended into cosmetics.

In addition, when a commercially available thing is used as each component (A)-(D), water, and antiseptic | preservative, these commercially available raw materials may contain some amounts of mixed components, such as antioxidant and a residual raw material. is there. In this specification, “each component (A) to (D), water, no components other than preservatives” means that such a mixed component derived from raw materials is contained in a proportion of 0.1% by weight or less. Is also included. For example, in some commercially available nonionic surfactants, an antioxidant (tocopherol) is added, but the antioxidant derived from such a raw material is 0.1% by weight based on the total amount of the composition. In the case where it is contained at a ratio of 1, it corresponds to “a substance containing no components other than inorganic powder, nonionic surfactant, water and preservative”.

As a manufacturing method of the aqueous dispersion mentioned above, after making it into an aqueous dispersion by the process (1) which fully mixes component (A)-(C) and water, the process of adding and further mixing a component (D) It is preferable to prepare a dispersion according to (2). By such a method, generation | occurrence | production of lumps etc. can be suppressed, each component can be mixed with high uniformity, and the aqueous dispersion with which component (A) was disperse | distributed uniformly can be obtained. When all of the components (A) to (D) are mixed at the same time, the component (A) is not dispersed or lumps are generated, and a dispersion cannot be obtained.

The aqueous dispersion containing the components (A) to (D) described above can be used as a raw material to obtain a cosmetic. This invention is also the cosmetics obtained by the manufacturing method of the cosmetics including the process (3) which mixes the said aqueous dispersion with another cosmetics ingredient, and the said manufacturing method.

Examples of the cosmetics include water-based cosmetics, O / W-type cosmetics (that is, oil-in-water cosmetics), W / O-type cosmetics, and the like, which are inorganic powders (A As long as the above is dispersed, any system can be used.
In particular, in the case of an O / W type agent, since the amount of water is large and water is in the outer phase, the amount of the aqueous dispersion can be increased, and the inorganic powder is present in the outer phase. Is particularly preferable from the viewpoint that ultraviolet rays can be efficiently cut, particularly in ultraviolet shielding applications.
In the cosmetic of the present invention, the inorganic powder (A) that has been subjected to the water-repellent organic surface treatment is preferably dispersed in the aqueous phase.

The cosmetic of the present invention preferably further contains an anionic polymer thickener (E). As described above, the present invention can improve the problems caused when the inorganic powder (A) subjected to the water-repellent organic surface treatment and the anionic polymer thickener (E) are used in combination. , Has the effect of. That is, it is preferable in that a stable thickening effect can be obtained even when used in combination with the anionic polymer thickener (E).

The anionic polymer thickener is not particularly limited, and is a carboxyvinyl polymer, acrylic acid / alkyl methacrylate copolymer, (acrylates / italaconic acid steareth-20) copolymer, alkyl acrylate copolymer, (alkyl acrylate / Stearless methacrylate-20) copolymer, (acryloyldimethyltaurate ammonium / VP (vinyl pyrrolidone)) copolymer (eg “Aristoflex AVC” from Clariant), (acryloyldimethyltaurine ammonium / benheneth methacrylate-25) crosspolymer (eg, Clariant) "Aristoflex HMB"), polyacrylate crosspolymer-11 (for example, "Aristoflex Velet" manufactured by Clariant) It can be. The anionic polymer thickeners may be used alone or in combination of two or more. Among them, carboxyvinyl polymer and (acryloyldimethyltaurine ammonium / VP) copolymer are preferable.

The anionic polymer thickener (E) is preferably contained in the cosmetic at a ratio of 0.001 to 2% by weight. If it is less than 0.001% by weight, it is not preferable from the viewpoint that the effect of thickening is poor, and if it exceeds 2% by weight, it is not preferable from the viewpoint that the coating feels strongly after application and the feel becomes poor. The upper limit is more preferably 1% by weight. The lower limit is more preferably 0.002% by weight, still more preferably 0.05% by weight.

In the cosmetic production method and cosmetic using the aqueous dispersion, the above-described aqueous dispersion can be mixed with any cosmetic ingredient. The cosmetic raw material is not particularly limited, and examples thereof include oil agents, surfactants, humectants, higher alcohols, sequestering agents, natural and synthetic polymers, water-soluble and oil-soluble polymers, ultraviolet screening agents, and various extractions. Components such as liquid, organic dyes, antiseptics, antioxidants, pigments, thickeners, pH adjusters, fragrances, cooling agents, antiperspirants, fungicides, skin activators, various powders, etc. It may be contained.

In addition, in the process which mixes the component same as the component contained in the said aqueous dispersion with the other cosmetics component mentioned above, it does not interfere even if it adds further. However, it is preferable not to add the inorganic powder (A) subjected to the water repellent organic surface treatment in the step (3) because there is a risk of impairing stability.

The oil agent is not particularly limited. For example, natural animal and vegetable oils and fats (for example, olive oil, mink oil, castor oil, palm oil, beef tallow, evening primrose oil, coconut oil, castor oil, cacao oil, macadamia nut oil, etc.); wax (for example, Jojoba oil, beeswax, lanolin, carnauba wax, candelilla wax, etc.); higher alcohols (eg, lauryl alcohol, stearyl alcohol, cetyl alcohol, oleyl alcohol, etc.); higher fatty acids (eg, lauric acid, palmitic acid, stearic acid, olein) Acids, behenic acid, lanolin fatty acids, etc .; higher aliphatic hydrocarbons such as liquid paraffin, solid paraffin, squalane, petrolatum, ceresin, microcrystalline wax, etc .; synthetic ester oils (eg, butyl stearate, hexyl laurate, diisopropyl azimuth) , Diisopropyl sebacate, octyldodecyl myristate, isopropyl myristate, isopropyl palmitate isopropyl myristate, cetyl isooctanoate, neopentyl glycol dicaprate); silicone derivatives (eg, silicones such as methyl silicone and methyl phenyl silicone) Oil) and the like. Furthermore, oil-soluble vitamins, preservatives, whitening agents, and the like can be added.

Examples of the surfactant include a lipophilic nonionic surfactant and a hydrophilic nonionic surfactant. The lipophilic nonionic surfactant is not particularly limited. For example, sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate. Sorbitan fatty acid esters such as diglycerol sorbitan penta-2-ethylhexylate, diglycerol sorbitan tetra-2-ethylhexylate, mono-cotton oil fatty acid glycerin, glyceryl monoerucate, glyceryl sesquioleate, glyceryl monostearate, α, α '-Glycerol polyglycerin fatty acids such as glyceryl oleate pyroglutamate, glyceryl monostearate malate, propylene glycol monostearate Glycol fatty acid esters, hardened castor oil derivatives, glycerin alkyl ethers and the like.

The hydrophilic nonionic surfactant is not particularly limited. For example, POE sorbitan fatty acid esters such as POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan tetraoleate, POE sorbite monolaurate, and POE sorbite mono POE sorbite fatty acid esters such as oleate, POE sorbite pentaoleate, POE sorbite monostearate, POE glycerin fatty acid esters such as POE glycerol monostearate, POE glycerol monoisostearate, POE glycerol triisostearate, POE POE fatty acid esters such as monooleate, POE distearate, POE monodiolate, ethylene glycol stearate, POE lauryl ether, POE POE alkyl ethers such as yl ether, POE stearyl ether, POE behenyl ether, POE 2 -octyldodecyl ether, POE cholestanol ether, POE alkyl phenyl ethers such as POE octyl phenyl ether, POE nonyl phenyl ether, POE dinonyl phenyl ether Pluronic type such as brulonic, POE / POP cetyl ether, POE / POP2-decyltetradecyl ether, POE / POP monobutyl ether, POE / POP hydrogenated lanolin, POE / POP alkyl ethers such as POE / POP glycerin ether, Tetronic PEO / TetraPOP ethylenediamine condensates, POE castor oil, POE hydrogenated castor oil, POE hydrogenated castor oil monoisos POE castor oil triisostearate, POE cured castor oil monopyroglutamic acid monoisostearic acid diester, POE castor oil cured castor oil derivatives such as POE cured castor oil maleic acid, POE beeswax and lanolin derivatives such as POE sorbite beeswax, Alkanolamides such as coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, POE propylene glycol fatty acid ester, POE alkylamine, POE fatty acid amide, sucrose fatty acid ester, POE nonylphenyl formaldehyde condensate, alkylethoxydimethylamine Examples thereof include oxide and trioleyl phosphate.

Examples of other surfactants include anionic surfactants such as fatty acid soaps, higher alkyl sulfates, POE lauryl sulfate triethanolamine, alkyl ether sulfates, alkyltrimethylammonium salts, alkylpyridinium salts, alkyl quaternary salts. Stabilizes cationic surfactants such as ammonium salts, alkyldimethylbenzylammonium salts, POE alkylamines, alkylamine salts, polyamine fatty acid derivatives, and amphoteric surfactants such as imidazoline-based amphoteric surfactants and betaine-based surfactants. And you may mix | blend in the range which does not have a problem in skin irritation.

The humectant is not particularly limited, and for example, xylitol, sorbitol, maltitol, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, bile salt, dl-pyrrolidone carboxylate, short Examples include chain-soluble collagen, diglycerin (EO) PO adduct, Isaiyobara extract, yarrow extract, and merirot extract.

The higher alcohol is not particularly limited, and examples thereof include linear alcohols such as lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol, monostearyl glycerin ether (batyl alcohol), 2-decyl. Examples thereof include branched chain alcohols such as tetradecinol, lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, octyldodecanol, and the like.

The sequestering agent is not particularly limited. For example, 1-hydroxyethane-1,1-diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid tetrasodium salt, sodium citrate, sodium polyphosphate, metaphosphoric acid Examples thereof include sodium, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid and the like.

The natural water-soluble polymer is not particularly limited. For example, arabia gum, tragacanth gum, galactan, guar gum, carob gum, caraya gum, carrageenan, pectin, agar, quince seed (malmello), alge colloid (guckweed extract), starch (rice, rice, Corn, potato, wheat), plant polymers such as glycyrrhizic acid, microbial polymers such as xanthan gum, dextran, succinoglucan and pullulan, and animal polymers such as collagen, casein, albumin and gelatin. .

The semi-synthetic water-soluble polymer is not particularly limited. For example, starch-based polymers such as carboxymethyl starch and methylhydroxypropyl starch, methylcellulose, nitrocellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, Examples thereof include cellulose polymers such as hydroxypropylcellulose, sodium carboxymethylcellulose (CMC), crystalline cellulose, and cellulose powder, and alginic acid polymers such as sodium alginate and propylene glycol alginate.

The synthetic water-soluble polymer is not particularly limited, and examples thereof include vinyl polymers such as polyvinyl alcohol, polyvinyl methyl ether, and polyvinyl pyrrolidone, and polyoxyethylene polymers such as polyethylene glycol 20,000, 40,000, and 60,000. Polymer, polyoxyethylene polyoxypropylene copolymer copolymer polymer, acrylic polymer such as sodium polyacrylate, polyethyl acrylate, polyacrylamide, polyethyleneimine, cationic polymer, carboxyvinyl polymer, alkyl modified carboxyvinyl A polymer etc. can be mentioned.

The inorganic water-soluble polymer is not particularly limited, and examples thereof include bentonite, silicate AlMg (beegum), laponite, hectorite, and silicic anhydride.

The ultraviolet screening agent is not particularly limited. For example, paraaminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N, N-dipropoxy PABA ethyl ester, N, N-diethoxy PABA ethyl ester, N, N-dimethyl Benzoic acid UV screening agents such as PABA ethyl ester and N, N-dimethyl PABA butyl ester; Anthranilic acid UV screening agents such as homomenthyl-N-acetylanthranylate; Amyl salicylate, menthyl salicylate, homomenthyl salicylate, octyl salicylate , Salicylic acid UV screening agents such as phenyl salicylate, benzyl salicylate, p-isopropanol phenyl salicylate; octylcinnamate, ethyl-4-isopropylcinnamate, methyl-2,5- Isopropyl cinnamate, ethyl-2,4-diisopropyl cinnamate, methyl-2,4-diisopropyl cinnamate, propyl-p-methoxycinnamate, isopropyl-p-methoxycinnamate, isoamyl-p-methoxycinnamate, 2- Ethoxyethyl-p-methoxycinnamate, cyclohexyl-p-methoxycinnamate, ethyl-α-cyano-β-phenylcinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glyceryl mono-2-ethylhexa Cinnamic acid-based ultraviolet screening agents such as noyl-diparamethoxycinnamate; 2,4-dihydroxybenzophenone, 2,2′-dihydroxy-4-methoxybenzophenone, 2,2′-dihydroxy-4,4′-dimethoxybenzophenone , 2, 2 ', 4,4'-tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4 -Benzophenone-based UV shielding agents such as phenylbenzophenone, 2-ethylhexyl-4'-phenyl-benzophenone-2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, 4-hydroxy-3-carboxybenzophenone; (4′-methylbenzylidene) -d, l-camphor, 3-benzylidene-d, l-camphor, urocanic acid, urocanic acid ethyl ester, 2-phenyl-5-methylbenzoxazole, 2,2′-hydroxy- 5-methylphenylbenzoto Azole, 2- (2′-hydroxy-5′-t-octylphenyl) benzotriazole, 2- (2′-hydroxy-5′-methylphenylbenzotriazole), dibenzalazine, dianisoylmethane, 4-methoxy-4′- Examples thereof include t-butyldibenzoylmethane and 5- (3,3-dimethyl-2-norbornylidene) -3-pentan-2-one.

Other drug components are not particularly limited and include, for example, vitamin A oil, retinol, retinol palmitate, inosit, pyridoxine hydrochloride, benzyl nicotinate, nicotinamide, nicotinic acid DL-α-tocopherol, magnesium ascorbate phosphate, 2 Vitamins such as -O-α-D-glucopyranosyl-L-ascorbic acid, vitamin D2 (ergocaciferol), dl-α-tocopherol, dl-α-tocopherol acetate, pantothenic acid, biotin; estradiol, ethinylestradiol, etc. Hormones; amino acids such as arginine, aspartic acid, cystine, cysteine, methionine, serine, leucine and tryptophan; anti-inflammatory agents such as allantoin and azulene; whitening agents such as arbutin; astringents such as tannic acid; L Menthol, cooling agents and sulfur camphor such as, lysozyme chloride, can be mentioned pyridoxine chloride, and the like.

There are no particular limitations on the various extracts, for example, Dokudami extract, Oat extract, Merirot extract, Odorikosou extract, Licorice extract, Peonies extract, Soap extract, Loofah extract, Kina extract, Yukinoshita extract, Clara extract, Kouhone extract, Fennel Extract, Primrose Extract, Rose Extract, Giant Extract, Lemon Extract, Shikon Extract, Aloe Extract, Shobu Root Extract, Eucalyptus Extract, Horsetail Extract, Sage Extract, Thyme Extract, Tea Extract, Seaweed Extract, Cucumber Extract, Clove Extract, Raspberry Extract, Melissa Extract , Carrot extract, marronnier extract, peach extract, peach leaf extract, mulberry extract, cornflower extract, hamamelis extract, placenta extract, thymus extract, silk extract, licorice Mention may be made of the kiss and the like.

EXAMPLES Although this invention is demonstrated further in detail based on an Example, this invention is not limited only to these Examples. In Examples and Comparative Examples, “%” means% by weight unless otherwise specified.

Example 1 (Production of titanium oxide aqueous dispersion)
13.0 g of 1,3-butylene glycol and 12.0 g of KF-6013 (PEG-9 dimethicone: manufactured by Shin-Etsu Chemical Co., Ltd .; HLB 10.0) and silica surface-treated fine particle titanium oxide (堺) STR-100W-LPT manufactured by Kagaku Kogyo Co., Ltd .: 50.0 g of spindle-shaped particles having a minor axis of 20 nm and a major axis of 100 nm were mixed, and then 25.0 g of purified water was added and stirred. Furthermore, 200 g of sodium hyaluronate aqueous solution (manufactured by Shiseido Co., Ltd., sodium biohyaluronate 1% aqueous solution (PE) N) is added, stirred, and contains 4 parts by weight of sodium hyaluronate with respect to 100 parts by weight of titanium oxide. A titanium oxide aqueous dispersion was prepared.

Example 2 (Production of aqueous zinc oxide dispersion)
Silica surface-treated fine particle zinc oxide (FINEX manufactured by Sakai Chemical Industry Co., Ltd.) surface-treated with 5.0 g of KF-6013 (PEG-9 dimethicone: manufactured by Shin-Etsu Chemical Co., Ltd.) and 10.0 g of 1,3-butylene glycol -33W-LP2: average particle diameter 35 nm) After mixing 60.0 g, 25.0 g of water was added and stirred. Furthermore, 200 g of sodium hyaluronate aqueous solution (manufactured by Shiseido Co., Ltd., biohyaluronic acid sodium 1% aqueous solution (PE) N) was added, stirred, and zinc oxide containing 3.34 parts by weight of sodium hyaluronate with respect to 100 parts by weight of zinc oxide. An aqueous dispersion was prepared.

Example 3 (Production of a mixed aqueous dispersion of titanium oxide and zinc oxide)
13.0-butylene glycol 53.0 g, KF-6013 (PEG-9 dimethicone: manufactured by Shin-Etsu Chemical Co., Ltd.) 32.0 g of silica surface-treated fine zinc oxide (FINEX manufactured by Sakai Chemical Industry Co., Ltd.) -33W-LP2: 240 g of silica, surface-treated fine particle titanium oxide surface-treated with silicone (STR-100W-LPT, manufactured by Sakai Chemical Industry Co., Ltd .: spindle shape with a particle diameter of 20 nm short axis and 100 nm long axis) Particles) After mixing 50.0 g, 125.0 g of water was added and stirred. Furthermore, 100 g of sodium hyaluronate aqueous solution (manufactured by Shiseido Co., Ltd., 1% sodium biohyaluronate aqueous solution (PE) N) was added and stirred, and 0.1% of sodium hyaluronate was added to 100 parts by weight of titanium oxide and zinc oxide. An aqueous dispersion containing 35 parts by weight of titanium oxide and zinc oxide was prepared.

Example 4 (Production of aqueous zinc oxide dispersion)
Silica surface-treated fine particle zinc oxide (FINEX manufactured by Sakai Chemical Industry Co., Ltd.) surface-treated with 5.0 g of KF-6013 (PEG-9 dimethicone: manufactured by Shin-Etsu Chemical Co., Ltd.) and 10.0 g of 1,3-butylene glycol -33W-LP2: average particle diameter 35 nm) After mixing 60.0 g, 25.0 g of water was added and stirred. Further, 33.0 g of sodium hyaluronate aqueous solution (manufactured by Shiseido Co., Ltd., biohyaluronic acid sodium 1% aqueous solution (PE) N) was added, and the mixture contained 0.55 parts by weight of sodium hyaluronate with respect to 100 parts by weight of zinc oxide. A zinc oxide aqueous dispersion was prepared.

Example 5 (Production of mixed aqueous dispersion of titanium oxide and zinc oxide)
13.0 g of KF-6013 (PEG-9 dimethicone: manufactured by Shin-Etsu Chemical Co., Ltd.) and 23.0 g of 1,3-butylene glycol and silica surface-treated fine particle zinc oxide (FINEX manufactured by Sakai Chemical Industry Co., Ltd.) -33W-LP2: average particle diameter 35 nm) 60.0 g, silica surface-treated fine particle titanium oxide surface-treated with silicone (manufactured by Sakai Chemical Industry Co., Ltd. STR-100W-LPT: particle diameter minor axis 20 nm, major axis 100 nm After mixing 50.0 g of spindle-shaped particles), 50.0 g of water was added and stirred. Further, 50.0 g of a sodium hyaluronate aqueous solution (manufactured by Shiseido Co., Ltd., 1% aqueous sodium biohyaluronate (PE) N) was added, stirred, and sodium hyaluronate with respect to 100 parts by weight of titanium oxide and zinc oxide in total. An aqueous dispersion containing 0.46 parts by weight of titanium oxide and zinc oxide was produced.

Example 6 (Production of mixed aqueous dispersion of titanium oxide and zinc oxide)
23.0 g of KF-6013 (PEG-9 dimethicone: manufactured by Shin-Etsu Chemical Co., Ltd.) and 43.0 g of 1,3-butylene glycol and silica surface-treated fine particle zinc oxide (FINEX manufactured by Sakai Chemical Industry Co., Ltd.) -33W-LP2: average particle diameter 35 nm) 180.0 g, silica surface-treated fine particle titanium oxide surface-treated with silicone (manufactured by Sakai Chemical Industry Co., Ltd. STR-100W-LPT: particle diameter minor axis 20 nm, major axis 100 nm After mixing 50.0 g of spindle-shaped particles, 100.0 g of water was added and stirred. Furthermore, 100 g of sodium hyaluronate aqueous solution (manufactured by Matsumoto Co., Ltd., Matsuhiaro HA-LQ 1% aqueous solution) was added and stirred, and sodium hyaluronate was 0.44 weight with respect to 100 parts by weight of titanium oxide and zinc oxide in total. An aqueous dispersion containing titanium oxide and zinc oxide contained in part was prepared.

Comparative Examples 1 and 2
In the production process of the titanium oxide aqueous dispersion of Example 1, in place of the sodium hyaluronate aqueous solution, xanthan gum aqueous solution (DSP Gokyo Food & Chemical Co., Ltd. Keldent made into 2% aqueous solution with purified water) 200 g or 200 g of a white jellyfish polysaccharide aqueous solution (Nippon Seika Co., Ltd., Trimoist-SL made into 1% aqueous solution with purified water) was added to prepare a titanium oxide aqueous dispersion.

Comparative Example 3 (Titanium oxide aqueous dispersion without addition of hyaluronic acid)
13.0 g of 1,3-butylene glycol and 12.0 g of KF-6013 (PEG-9 dimethicone: manufactured by Shin-Etsu Chemical Co., Ltd .; HLB 10.0) and silica surface-treated fine particle titanium oxide (堺) STR-100W-LPT manufactured by Chemical Industry Co., Ltd .: Spindle-shaped particles with a minor axis of 20 nm and a major axis of 100 nm were mixed, and then 25.0 g of purified water was added, followed by stirring to prepare a titanium oxide aqueous dispersion. did.

Comparative Example 4 (Zinc oxide dispersion without hyaluronic acid)
Silica surface-treated fine particle zinc oxide (FINEX manufactured by Sakai Chemical Industry Co., Ltd.) surface-treated with 5.0 g of KF-6013 (PEG-9 dimethicone: manufactured by Shin-Etsu Chemical Co., Ltd.) and 10.0 g of 1,3-butylene glycol -33W-LP2: average particle diameter 35 nm) After mixing 60.0 g, 25.0 g of water was added and stirred to prepare a zinc oxide aqueous dispersion.

Comparative Example 5 (dispersion in which hyaluronic acid was changed to simultaneous addition)
13.0 g of 1,3-butylene glycol, 12.0 g of KF-6013 (PEG-9 dimethicone: manufactured by Shin-Etsu Chemical Co., Ltd .; HLB 10.0), silica surface-treated fine particle titanium oxide (堺) STR-100W-LPT manufactured by Chemical Industry Co., Ltd .: 50.0 g of spindle-shaped particles having a minor axis of 20 nm and a major axis of 100 nm, 25.0 g of purified water, sodium hyaluronate aqueous solution (manufactured by Shiseido Co., Ltd., sodium biohyaluronate % Aqueous solution (PE) N) 200 g was added and stirred at the same time, but the powder did not conform and a lot of lumps were seen, and a dispersion could not be produced.

Comparative Example 6 (mixed aqueous dispersion of titanium oxide and zinc oxide without hyaluronic acid)
13.0 g of KF-6013 (PEG-9 dimethicone: manufactured by Shin-Etsu Chemical Co., Ltd.) and 23.0 g of 1,3-butylene glycol and silica surface-treated fine particle zinc oxide (FINEX manufactured by Sakai Chemical Industry Co., Ltd.) -33W-LP2: average particle diameter 35 nm) 60.0 g, silica surface-treated fine particle titanium oxide surface-treated with silicone (manufactured by Sakai Chemical Industry Co., Ltd. STR-100W-LPT: particle diameter minor axis 20 nm, major axis 100 nm After mixing 50.0 g of spindle-shaped particles), 50.0 g of water was added and stirred to prepare an aqueous dispersion containing titanium oxide and zinc oxide.

(Combination test with carboxyvinyl polymer)
2 g of carboxyvinyl polymer (Carbopol 980: manufactured by Lubrizol) was added to 98 g of purified water, and a small amount of 10% aqueous sodium hydroxide solution was added to adjust the pH to 7 to prepare a carboxyvinyl polymer viscous liquid. 6.4 g of the obtained carboxyvinyl polymer viscous liquid was mixed with 15.0 g of the aqueous dispersions of Examples 1 to 6 and Comparative Examples 1 and 2 and 8.6 g of water, and the appearance of the prepared composition was visually observed. It confirmed and evaluated as follows. Moreover, 5.0 g of the aqueous dispersions of Comparative Examples 3 and 4, 6.4 g of the carboxyvinyl polymer viscous liquid obtained above and 18.6 g of water were mixed and evaluated in the same manner. (Test Nos. 1 to 10)
○: There is no aggregation and the surface of the composition is smooth without any irregularities.
Δ: Although aggregation is not confirmed, the surface of the composition is uneven and has uneven portions.
X: Agglomeration was observed in a part of the composition, the surface was not smooth and glossy, and it was bumpy.

As described above, when the aqueous dispersion of the present invention is used, the composition does not aggregate even when used in combination with a carboxyvinyl polymer, and a composition having excellent stability can be obtained. Therefore, it can be suitably applied to cosmetics thickened by carboxyvinyl polymer.

(Long-term stability test in combination with (acryloyldimethyltauronium ammonium / vinylpyrrolidone) copolymer)
30 g of a 2% aqueous solution of (acryloyldimethyltaurine ammonium / vinylpyrrolidone) copolymer (manufactured by Clariant, “Aristoflex AVC”) was added to 44.7 g of purified water and mixed. Furthermore, 25 g of the dispersion obtained in Example 5 and 0.3 g of phenoxyethanol (Phenoxetol manufactured by Clariant) were added and mixed, and the resulting composition was allowed to stand at room temperature and 50 ° C. for 1 month, and the appearance of the composition Was visually observed. (Test No. 11)
Further, 30 g of a 2% aqueous solution of (acryloyldimethyltaurate ammonium / vinylpyrrolidone) copolymer (manufactured by Clariant, “Aristoflex AVC”) was added to 49.7 g of purified water and mixed. Furthermore, 20 g of the dispersion obtained in Comparative Example 6 and 0.3 g of phenoxyethanol (Phenoxetol manufactured by Clariant) were added and mixed, and the resulting composition was similarly observed. (Test No. 12)

○: There is no aggregation and the surface of the composition is smooth without any irregularities.
Δ: Although aggregation is not confirmed, the surface of the composition is uneven and has uneven portions.
X: Agglomeration was observed in a part of the composition, the surface was not smooth and glossy, and it was bumpy.

As described above, when the aqueous dispersion of the present invention is used, the composition is not agglomerated even when used in combination with (acryloyldimethyltaurine ammonium / vinylpyrrolidone) copolymer, which is one of anionic thickeners, and stable. A composition having excellent properties can be obtained. Therefore, it can be suitably applied to cosmetics thickened by the thickener.

(Prescription Example 1)
Based on the formulation shown in Table 4 below, an oil-in-water emulsified cosmetic was prepared.

1) manufactured by Innovacos, polyglyceryl stearate-2, glyceryl stearate, stearyl alcohol 2) manufactured by AAK, shea fat ethyl esters [production procedure]
(1) Heat, dissolve 1, 2, and 3 (75 ± 5 ° C)
(2) Add 4, 5, 6, 7, and 8 sequentially to (1) and mix uniformly (80 to 85 ° C.)
(3) Gradually add 9 preheated to 80-85 ° C to (2) and emulsify (D = 3000rpm, 3 minutes, 80-85 ° C)
(4) Cool (3) to 40 ° C. (5) Add 10 to (4) and mix uniformly
(6) Add 11 to (5) and mix uniformly (7) Add 12 and 13 to (6) sequentially and mix uniformly

(Reference example)
In the production procedure (6) in the above Formulation Example 1, instead of the aqueous dispersion of Example 3, 11 parts of the titanium oxide aqueous dispersion of Comparative Example 3, 20 parts of the zinc oxide aqueous dispersion of Comparative Example 4, and hyaluron The acid Na 1% aqueous solution 5 parts was added without uniform mixing in advance. The oil-in-water emulsified cosmetic obtained was poor in stability.

(Prescription example 2)
Based on the formulation shown in Table 5 below, an oil-in-water emulsified cosmetic was prepared.

3) Made by Toray Dow Corning, Polyacrylate Na, PEG / PPG-18 / 18 Dimethicone, Trideceth-6, etc. 4) Made by BASF, Diethylaminohydroxybenzoyl hexyl benzoate, Ethylhexyl methoxycinnamate 5) Made by Toray Dow Corning, PEG / PPG-30 / 10 dimethicone, etc.

[Manufacturing procedure]
(1) After 2 and 3 are dissolved by heating, 1 is added and mixed uniformly.
(2) Add 4 to (1) and emulsify. (D = 3000rpm, 3 minutes)
(3) Uniformly mix 5-11.
(4) Add (3) to (2) and emulsify. (D = 3000rpm, 3 minutes)
(5) Add 12 to (4) and mix uniformly.
(6) Add 13 to (5) and mix uniformly.
(7) Add 14 to (6) and mix uniformly.

(Prescription Example 3)
Based on the formulation shown in Table 6 below, an oil-in-water liquid foundation was prepared.

6) Croda, sorbitan stearate, palm fatty acid sucrose

[Manufacturing procedure]
(1) Heat 1 to 7 at 70 ° C. to dissolve and mix uniformly.
(2) Heat 8 to 11 at 70 ° C. to dissolve and uniformly mix.
(3) Add (2) to (1) and emulsify. (D = 1000 rpm, 70 ° C., 2 minutes)
(4) Cool (3) to 35 ° C.
(5) Roll 12-18 and add to (4) and mix uniformly.
(6) Add 19 to (5) and mix uniformly.

The aqueous dispersion of the present invention can be used as sunscreen cosmetics, makeup cosmetics, and other various cosmetics.

Claims (7)

An aqueous dispersion comprising a water-repellent organic surface-treated inorganic powder (A), a nonionic surfactant (B), a polyhydric alcohol (C), and a mucopolysaccharide (D). The aqueous dispersion according to claim 1, wherein the mucopolysaccharide (D) is blended in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the inorganic powder (A) subjected to the water repellent organic surface treatment. The aqueous dispersion according to claim 1 or 2, wherein the mucopolysaccharide (D) is hyaluronic acid and / or a sodium salt thereof. A step (1) of mixing inorganic powder (A), nonionic surfactant (B), polyhydric alcohol (C) and water, and further a step (2) of mixing mucopolysaccharide (D). A method for producing an aqueous dispersion according to 1, 2 or 3. The aqueous dispersion according to claim 1, 2, or 3,
Cosmetics obtained by a production method comprising a step (3) of mixing with other cosmetic ingredients containing an anionic polymer thickener (E). The aqueous dispersion according to claim 1, 2, or 3,
The manufacturing method of cosmetics including the process (3) which mixes with other cosmetic ingredients containing an anionic polymer thickener (E). The cosmetic according to claim 5, wherein the cosmetic is an oil-in-water emulsified cosmetic.