JP6328583B2 - Gel-like oil-in-water cosmetic - Google Patents

Description

  The present invention relates to a gel-like oil-in-water cosmetic.

Sunscreen cosmetics that protect the skin from ultraviolet rays are known.
As such a sunscreen cosmetic, for example, Patent Document 1 discloses that “octyl methoxycinnamate, titanium oxide and / or zinc oxide powder, and polyoxyethylene methyl glucoside and / or polypropylene methyl glucoside are used externally for skin. The “agent” is disclosed in Patent Document 2 as “a sunscreen composition containing“ inorganic metal oxide sunscreen particles; and methylcellulose ””, and in Patent Document 3, “inorganic metal oxide sunscreen particles and 1.7. A sunscreen composition comprising hydroxypropylmethylcellulose having less than DS methoxyl is disclosed.

JP 2004-123543 A Special table 2012-506437 gazette Special table 2012-506438 gazette

  In recent years, gel-like oil-in-water cosmetics having a fresh feel have been studied. Gel-like oil-in-water cosmetics have a fresh feel, but on the other hand, they may have insufficient moisturizing power. In addition, when an organic UV absorber is blended in a gel-like oil-in-water cosmetic, it often contains a large amount of oily components, and when applied to the skin, it becomes a sticky feel and it may be difficult to obtain a refreshing and fresh feel. .

  In addition, the sunscreen cosmetics described in Patent Documents 1 to 3 are blended with inorganic particles having ultraviolet shielding ability and methyl gluces, but when many inorganic particles are blended, a peculiar feel remains and a refreshing and fresh feel. It may be difficult to obtain. In cosmetics, the touch when applied to the skin is one of the important factors, and in particular, a refreshing and fresh touch is favored by cosmetic users.

  In cosmetics, since the feeling of freshness is usually impaired when there is a sticky feel, methods for obtaining a non-sticky feeling while maintaining the freshness have been studied.

  The present invention has been made in view of the circumstances as described above, and is a gel-like oil-in-water cosmetic containing an organic ultraviolet absorber, having a fresh and non-sticky feeling, and maintaining a moisturizing feeling. It is an object of the present invention to provide a gel-like oil-in-water cosmetic that is excellent in water.

  Specific means for solving the above problems are as follows.

<1> An organic ultraviolet absorber, an aqueous medium, a polyoxyalkylene methyl glucoside represented by the following general formula (1), a carboxyvinyl polymer, and an (acrylates / alkyl acrylate (C10-30)) crosspolymer. Powder having a core-shell structure including one or more gelling agents selected from the group , a core layer surface including a silicone rubber and a coating layer including a silicone resin, and having a silicone resin on at least a part of the surface The content of the polyoxyalkylene methyl glucoside represented by the general formula (1) with respect to the total amount of the gel-like oil-in-water cosmetic is 1% by mass to 12% by mass, and the gel-like oil-in-water type the total content of the aqueous medium with respect to the cosmetic of the total amount is not less than 55 wt%, gel-like oil-in-water type cosmetic.

  In general formula (1), R represents a hydrogen atom or a methyl group, and n representing the average number of added moles of ethylene oxide or propylene oxide is 5 to 50.

<2> The gel-like oil-in-water cosmetic according to <1>, wherein the organic ultraviolet absorber includes a silicone type ultraviolet absorber.
<3> The gel-like oil-in-water cosmetic according to <2>, wherein the silicone type ultraviolet absorber is dimethicodiethylbenzalmalonate.

<4> The gel-like oil-in-water cosmetic according to any one of <1> to <3>, wherein in the general formula (1), n representing the average number of added moles of ethylene oxide or propylene oxide is 10 to 25 .

<5> The gel-like oil-in-water cosmetic according to any one of <1> to <4>, wherein the silicone resin in the powder is a vinyl dimethicone / methicone silsesquioxane crosspolymer.
<6> The gel-like water according to any one of <1> to <5>, wherein the content of the gelling agent is 0.01% by mass to 5% by mass with respect to the total amount of the gel-like oil-in-water cosmetic. Oil-type cosmetics.
<7> The gel-like oil-in-water according to any one of <1> to <6>, wherein the content of the powder with respect to the total amount of the gel-like oil-in-water cosmetic is 0.1% by mass or more and 5% by mass or less. Mold cosmetics.

<8> The gel shape according to any one of <1> to <7>, wherein the content of the organic ultraviolet absorber is 0.01% by mass to 30% by mass with respect to the total amount of the gel-like oil-in-water cosmetic. Oil-in-water cosmetics.
<9> The aqueous medium contains a water-soluble solvent, and the content of the water-soluble solvent with respect to the total amount of the gel-like oil-in-water cosmetic is 25% by mass or less . Gel-like oil-in-water cosmetic.

  According to the present invention, there is provided a gel-like oil-in-water cosmetic containing an organic ultraviolet absorber, having a fresh and non-sticky feel, and excellent in moisture retention. can do.

  Hereinafter, specific embodiments of the present invention will be described in detail. However, the present invention is not limited to the following embodiments, and may be appropriately modified within the scope of the object of the present invention. be able to.

In the present specification, a numerical range indicated using “to” means a range including the numerical values described before and after “to” as the minimum value and the maximum value, respectively.
In the present specification, the amount of each component in the gel-like oil-in-water cosmetic is gel-like unless there is a specific notice when there are a plurality of substances corresponding to each component in the gel-like oil-in-water cosmetic. It means the total amount of a plurality of substances present in the oil-in-water cosmetic.

[Gel-like oil-in-water cosmetic]
The gel-like oil-in-water cosmetic of the present invention (hereinafter sometimes simply referred to as “cosmetic”) comprises an organic ultraviolet absorber, an aqueous medium, and a polyoxyalkylene methyl glucoside represented by the general formula (1) (Hereinafter sometimes referred to as “specific compound”), a gelling agent, and a powder having a silicone resin on at least a part of its surface (hereinafter sometimes referred to as “specific powder”), The total content of the aqueous medium is 55% by mass or more based on the total amount of the gel-like oil-in-water cosmetic.
Here, in the present invention, “gel” means a semi-solid state having fluidity.
More specifically, for example, “gel” refers to a B-type viscometer (for example, TVB-10 (manufactured by Toki Sangyo Co., Ltd., measurement conditions: rotor No. 4, rotation speed 6 rpm, measurement time 60 seconds). Etc.), the state in which the viscosity of the measurement object when measured under the conditions of 25 ° C. and 1 atm is 5000 mPa · s or higher is preferable, and the state of 15000 mPa · s or higher and 100000 mPa · s or lower is preferable.

The present inventor uses a moisturizer having a specific structure such as polyoxyalkylene methyl glucoside (specific compound) represented by the general formula (1) and a specific powder having a silicone resin on the surface, an organic ultraviolet absorber, an aqueous A gel-like oil-in-water cosmetic with an aqueous medium content of 55% by mass or more is obtained together with a medium and a gelling agent to obtain a non-sticky feeling while maintaining freshness, and further moisturizing feeling It has been found that the effect of the present invention is maintained.
That is, the gel-like oil-in-water cosmetic of the present invention is a cosmetic that has a fresh and non-sticky feel and is excellent in the moisturizing feeling.
This effect is an effect that cannot be obtained when a known humectant that is not a specific compound (eg, glycerin, a humectant having a glycerin skeleton) is used.

Here, “tackiness” and “tacky feel” in the present invention are the feelings after the cosmetic is applied to the skin, and are accompanied by sticking or sticking between the fingers and the skin to which the cosmetic is applied. Refers to the touch.
The “freshness” and “freshness touch” refer to a touch when the cosmetic is applied to the skin, and a dry (non-sticky) feel accompanied by moisture.
“Moisturizing feeling” refers to a moist feeling, and “continuation of moisturizing feeling” refers to the persistence of moist feeling after the cosmetic is applied to the skin.
In particular, the above-mentioned “warmness” can also be quantified by a rheological method, for example, as described in FRAGRACE JOURNAL 2012-3 P.17-22, and “warmness” is, for example, the Herschel-Bulkley equation. It can be shown by the size of the HB index derived from the analysis of (HB formula). In addition, “freshness” may be quantified by analyzing the Nutting equation.

  Hereinafter, each component contained in the gel-like oil-in-water cosmetic of the present invention will be described in detail.

[Organic UV absorber]
The organic ultraviolet absorber used in the present invention is not limited as long as it is an organic compound having an action of absorbing ultraviolet rays, and various organic ultraviolet absorbers can be used.
The form of the organic ultraviolet absorber at room temperature (25 ° C.) may be solid, semi-solid, or liquid.

Specific examples of the organic ultraviolet absorber include ethylhexyl methoxycinnamate, octocrylene, hexyl diethylaminohydroxybenzoyl benzoate, silicone type ultraviolet absorber, homosalate, t-butylmethoxydibenzoylmethane, ethylhexyl salicylate, ethylhexyltriazone, Examples include bisethylhexyloxyphenol methoxyphenyltriazine, methylenebisbenzotriazolyltetramethylbutylphenol, oxybenzone-3, dimethyl PABA ethylhexyl (2-ethylhexyl paradimethylaminobenzoate), and drometrizol trisiloxane.
Among these, a silicone type ultraviolet absorber is preferable in terms of improving freshness.
Here, the silicone type ultraviolet absorber refers to a silicone polymer to which an ultraviolet absorber is bonded, and in the present invention, a silicone polymer to which cinnamate is bonded is preferable. Specific examples of the silicone type ultraviolet absorber include dimethicodiethylbenzalmalonate (polysilicone-15).

An organic ultraviolet absorber may be used individually by 1 type, and may use 2 or more types together.
In the present invention, two or more organic ultraviolet absorbers are preferably used in combination for absorption of UV-A waves (wavelengths of 320 nm to 400 nm) and UV-B waves (wavelengths of 280 nm to 320 nm).
Preferred combinations include a combination of one or more organic ultraviolet absorbers having absorption at the wavelength of the UV-A wave and one or more organic ultraviolet absorbers having absorption at the wavelength of the UV-B wave. . In this case, it is preferable to use a silicone type ultraviolet absorber as the organic ultraviolet absorber having absorption at the wavelength of the UV-B wave.

The content of the organic ultraviolet absorbent in the gel-like oil-in-water cosmetic of the present invention may be determined according to the type of organic ultraviolet absorbent used and the ultraviolet absorbing ability. For example, the organic ultraviolet absorber is preferably 0.01% by mass or more and more preferably 0.1% by mass or more with respect to the total amount of the gel-like oil-in-water cosmetic from the viewpoint of the ultraviolet absorbing ability.
The upper limit of the content of the organic ultraviolet absorber may be determined by the upper limit of the amount of the organic ultraviolet absorber blended into the cosmetic, but is preferably 50% by mass or less from the viewpoint of feeling of use, and is 30% by mass. % Or less is more preferable.
Here, the upper limit of blending in cosmetics is, for example, 20 g for 100 g of cosmetics for ethylhexyl methoxycinnamate, 10 g for 100 g of cosmetics for hexyl diethylaminohydroxybenzoylbenzoate, and makeup for bisethylhexyloxyphenol methoxyphenyltriazine. 3 g for 100 g of the preparation, and 10 g for 100 g of the cosmetic for dimethicodiethylbenzalmalonate.

  When a silicone type ultraviolet absorber is used as the organic ultraviolet absorber, its content is 0.01% by mass with respect to the total amount of the gel-like oil-in-water cosmetic from the viewpoint of improving freshness and ultraviolet absorbing ability. It is preferably 30% by mass or less, more preferably 0.05% by mass or more and 20% by mass or less, and further preferably 0.05% by mass or more and 10% by mass or less.

[Aqueous medium]
The “aqueous medium” in the present invention includes water and a water-soluble solvent.
The total content of the aqueous medium (water and water-soluble solvent) in the present invention is 55% by mass or more based on the total amount of the gel-like oil-in-water cosmetic in order to obtain the form of the gel-like oil-in-water cosmetic. The mass% or more is preferable, and 60 mass% or more is more preferable. Moreover, as an upper limit, 99 mass% or less is preferable from the point of a usability | use_condition, and 80 mass% or less is more preferable.
Here, the water-soluble solvent refers to an organic solvent having a solubility in water at 25 ° C. of 10% by mass or more.

Water contained in the aqueous medium is not particularly limited, and any of tap water, natural water, purified water, distilled water, ion-exchanged water, pure water, milli-Q water, and the like can be used. . Note that Milli-Q water is ultrapure water obtained by a Milli-Q water production apparatus, which is an ultrapure water production apparatus manufactured by Merck Millipore.
Especially, as water used for the gel-like oil-in-water cosmetics of this invention, a purified water, distilled water, ion-exchange water, a pure water, milli Q water etc. are mentioned preferably from a viewpoint that there are few impurities.
The water content in the gel-like oil-in-water cosmetic of the present invention is 50% by mass with respect to the total amount of the gel-like oil-in-water cosmetic from the viewpoint of feeling of use in order to obtain a gel-like oil-in-water cosmetic. -80 mass% is preferable, and 53 mass% -70 mass% is more preferable.

  Examples of the water-soluble solvent contained in the aqueous medium include methanol, ethanol, 1-propanol, 2-propanol, 2-butanol, acetone, tetrahydrofuran, acetonitrile, methyl ethyl ketone, dipropylene glycol monomethyl ether, methyl acetate, methyl acetoacetate, N- Examples include methyl pyrrolidone, dimethyl sulfoxide, ethylene glycol, 1,3-butanediol, 1,4-butanediol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, and glycerin.

A water-soluble solvent may contain only 1 type and may use 2 or more types together.
The content of the water-soluble solvent in the gel-like oil-in-water cosmetic of the present invention can be appropriately selected according to the purpose. From the viewpoint of usability and the like, the content of the water-soluble solvent is preferably 25% by mass or less, more preferably 5% by mass or more and 20% by mass or less, based on the total amount of the gel-like oil-in-water cosmetic. .

[Polyoxyalkylene methyl glucoside represented by the general formula (1) (specific compound)]
The specific compound used in the present invention will be described.
The specific compound is a polyoxyalkylene methyl glucoside represented by the following general formula (1).
The specific compound is a compound obtained by addition polymerization of methylene oxide or ethylene oxide to methyl glucoside.

  In general formula (1), R represents a hydrogen atom or a methyl group, and n representing the average number of added moles of ethylene oxide or propylene oxide is 5 to 50.

  R in the general formula (1) is preferably a hydrogen atom from the viewpoint of usability.

  N in the general formula (1) is preferably 5 to 30 and more preferably 10 to 25 from the viewpoint of suppression of stickiness.

Commercial products may be used as the specific compound.
Examples of polyoxyethylene methyl glucoside include NIKKOL (registered trademark) BMG-10, NIKKOL (registered trademark) BMG-20 manufactured by Nikko Chemicals, and Glucam E-10, Glucam E-20 manufactured by Lubrizol, Inc. Examples thereof include Macbiobride (registered trademark) MG-10E and Macbiobride (registered trademark) MG-20E manufactured by NOF Corporation.
Examples of the polyoxypropylene methyl glucoside include Glucam P-10 and Glucam P-20 manufactured by Lubrizol, and Macbiobroide (registered trademark) MG-10P and Macbiobroride (registered trademark) manufactured by NOF Corporation. MG-20P etc. are mentioned.

A specific compound may contain only 1 type and may use 2 or more types together.
The content of the specific compound in the gel-like oil-in-water cosmetic of the present invention is 1% by mass to 12% by mass with respect to the total amount of the gel-like oil-in-water cosmetic from the point of suppressing stickiness while enhancing the moisturizing feeling. Are preferable, 2 mass%-10 mass% are more preferable, and 5 mass%-10 mass% are still more preferable.

[Gelling agent]
The gel-like oil-in-water cosmetic of the present invention contains a gelling agent.
The gelling agent used in the present invention is not particularly limited as long as it is a gelling agent that can form a gel-like oil-in-water cosmetic, but the oil-in-water emulsion stability, ease of spreading of the cosmetic, and freshness From this point, a polymer of one or more monomers selected from the group consisting of acrylic acid, methacrylic acid, and alkyl esters thereof is preferable. Specific examples of the polymer include carboxyvinyl polymer and alkyl-modified carboxyvinyl polymer. These may have a crosslinked structure or may not have a crosslinked structure.

Here, as commercially available products of carboxyvinyl polymer, carbopol 940, carbopol 941, carbopol 980, carbopol 981, carbopol ETD2050, etc. manufactured by Lubrizol Advanced Materials, Hibis Wako (registered) Trademark) 103, Hibiswaco (registered trademark) 104, Hibiswaco (registered trademark) 105, 3V SIGMA made Sinteren K, Sinteren L and the like.
Commercially available products of alkyl-modified carboxyvinyl polymers include Carbopol 1382, Pemulen TR-1, Pemulen TR-2, Carbopol ULTREZ-20, Carbopol ULTREZ-21, Carbopol ETD2020, Carbopol manufactured by Lubrizol Advanced Materials. 1342 and the like.

In the present invention, an alkyl-modified carboxyvinyl polymer is preferable from the viewpoint of the persistence of the moisturizing feeling and the suppression of stickiness. Here, the alkyl-modified carboxyvinyl polymer is a copolymer of (meth) acrylic acid and alkyl acrylate, a copolymer of (meth) acrylic acid and alkyl methacrylate, a homopolymer of alkyl acrylate, or Although it refers to a homopolymer of alkyl methacrylate, it is preferably hydrophilic, and from the viewpoint of viscosity stability, a copolymer of (meth) acrylic acid and alkyl acrylate is preferred.
The copolymer of (meth) acrylic acid and alkyl acrylate may be any compound that is usually used in cosmetics. Specifically, (acrylates / alkyl acrylate (C10-30)) crosspolymer Among them, (acrylates / alkyl acrylate (C10-30)) crosspolymer is preferable from the viewpoint of viscosity stability.

A gelling agent may contain only 1 type and may use 2 or more types together.
The content of the gelling agent in the gel-like oil-in-water cosmetic of the present invention is 0 with respect to the total amount of the gel-like oil-in-water cosmetic from the viewpoint of viscosity stability that obtains the form of the gel-like oil-in-water cosmetic. 0.01 mass%-5 mass% are preferable, 0.05 mass%-2 mass% are more preferable, 0.1 mass%-1 mass% are still more preferable.

[Powder having silicone resin on at least part of its surface (specific powder)]
The specific powder used in the present invention can suppress stickiness and give a smooth feeling to the cosmetic amount by the action of the silicone resin present on the surface.
The specific powder may have a silicone resin only on the surface, or the whole powder may have a silicone resin.
The specific powder may have a core-shell structure having a coating layer on the core surface. In the case of the specific powder having a core-shell structure, the silicone resin may be contained only in the coating layer, or the silicone resin may be contained in the coating layer and the core part.
In addition, the silicone resin contained in the coating layer and the silicone resin contained in the core part may be the same or different.

In the case of the specific powder having a core-shell structure, it is preferable that the coating layer contains a silicone resin and the core part contains a silicone compound from the viewpoint of providing a smooth feeling and suppressing stickiness.
In particular, from the viewpoint of improving the feeling of use, a specific powder having a core-shell structure in which the core portion includes silicone rubber and the coating layer includes silicone resin is particularly preferable. Commercially available products of such specific powder include “silicone composite powder” series, “K MP- 600”, “K MP- 601”, “K MP- 602”, “K MP −” manufactured by Shin-Etsu Chemical Co., Ltd. 605 "," X-52-7030 "and the like.

  Although there is no restriction | limiting in particular as a silicone resin which comprises specific powder, From the point of use feeling, a vinyl dimethicone / methicone silsesquioxane cross polymer (cosmetics display name: (vinyl dimethicone / methicon silsesquioxane) cross polymer) ), (Diphenyldimethicone / vinyldiphenyldimethicone / silsesquioxane) crosspolymer, polysilicone-1 crosspolymer, and poly-silicone-22 are preferred, and among them, vinyldimethicone / methiconesilsesquioxane crosspolymer is preferred.

Specific powder may contain only 1 type and may use 2 or more types together.
The content of the specific powder in the gel-like oil-in-water cosmetic of the present invention is preferably 0.1% by mass to 5% by mass with respect to the total amount of the gel-like oil-in-water cosmetic, from the viewpoint of suppressing stickiness, 0.5 mass%-4 mass% are more preferable.

[Other ingredients]
The gel-like oil-in-water cosmetic of the present invention may optionally contain other components besides the organic ultraviolet absorber, the aqueous medium, the specific compound, the gelling agent, and the specific powder.
Hereinafter, other components that can be used in the gel-like oil-in-water cosmetic of the present invention will be described.

(emulsifier)
An emulsifier is preferably used in the gel-like oil-in-water cosmetic of the present invention.
The emulsifier is not particularly limited as long as it can be applied to cosmetics.
Examples of the emulsifier include a surfactant. The surfactant may be any of an anionic surfactant, a cationic surfactant, and an amphoteric surfactant, an ionic surfactant and a nonionic surfactant.
Examples of the ionic surfactant include alkyl sulfonate, alkyl sulfate, monoalkyl phosphate, lecithin and the like.
Examples of nonionic surfactants include sorbitan fatty acid ester, glycerin fatty acid ester, organic acid monoglyceride, polyglycerin fatty acid ester, propylene glycol fatty acid ester, polyglycerin condensed ricinoleic acid ester, sucrose fatty acid ester, polyethylene glycol fatty acid ester, Polyoxyethylene alkyl ether, polyoxypropylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene propylene Glycol fatty acid ester, polyoxyethylene castor oil, polyoxyethylene hardened Can be mentioned machine oil, polyoxyethylene phytosterol like.

  The above surfactants may be used alone or in combination of two or more.

  When using an emulsifier in the gel-like oil-in-water cosmetic of the present invention, the content of the emulsifier is 0.1% by mass to 15% by mass with respect to the total amount of the gel-like oil-in-water cosmetic from the viewpoint of emulsion stability. %, More preferably 0.1% by mass to 10% by mass.

(Ultraviolet diffusing inorganic powder)
The gel-like oil-in-water cosmetic of the present invention can contain an ultraviolet diffusing inorganic powder as long as the effects of the present invention are not impaired.
Examples of the ultraviolet diffusive inorganic powder include inorganic powders such as titanium oxide and zinc oxide.
Whether the surface of the inorganic powder is coated or not, it can be used as long as it can be stably dispersed in the cosmetic.
The coating agent for coating the inorganic powder may be an inorganic material or an organic material, and may be appropriately selected depending on the cosmetic system to which the inorganic powder is added.

(Other additive components)
The gel-like oil-in-water cosmetic of the present invention may appropriately contain additive components that are usually used in the cosmetic field within a range not impairing the effects of the present invention.
Examples of the additive component include functional components that exhibit useful beauty effects (for example, a moisturizing effect, a whitening effect, a skin conditioning effect, etc.) when used in cosmetics. Examples of such functional components include emollients such as triisodecyl isononanoate; vitamin E such as tocopherol and tocotrienol; ubiquinones such as coenzyme Q10; polysaccharides such as hyaluronic acid; ceramide 1, ceramide 2, ceramide 3, ceramide 5, active ceramides such as ceramide 6; glycosphingolipids such as glucosyl ceramide and galactosyl ceramide; collagens such as hydrolyzed collagen and water-soluble collagen; amino acids such as acetylhydroxyproline; hydrolyzed silavanal-proteins and the like.
Other additives include, for example, oil agents such as lauroyl sarcosine isopropyl, emulsion stabilizers such as cetanol, preservatives such as phenoxyethanol and methylparaben, antioxidants, colorants, thickeners, potassium hydroxide, sodium hydroxide, Examples include pH adjusters such as hydrochloric acid, buffers, fragrances, antibacterial agents, active oxygen scavengers, antimicrobial agents, anti-inflammatory agents, and minerals.

[Cosmetic form]
The gel-like oil-in-water cosmetics of the present invention include sunscreen cosmetics such as skin, body and scalp, skin care cosmetics such as lotions, makeup cosmetics such as makeup bases, and deodorants Although cosmetics, scalp hair cosmetics, etc. can be mentioned, it is not restricted to these.

[Method for producing gel-like oil-in-water cosmetic]
The method for producing the gel-like oil-in-water cosmetic of the present invention is not particularly limited. The gel-like oil-in-water cosmetic of the present invention is known by using other components such as an emulsifier in an organic ultraviolet absorber, an aqueous medium, a specific compound, a gelling agent, and a specific powder, if necessary. It can be obtained according to the method for producing a gel-like oil-in-water cosmetic.
One preferred method for producing the gel-like oil-in-water cosmetic of the present invention includes an oil phase composition containing an organic ultraviolet absorber and a specific powder, and an aqueous phase containing an aqueous medium, a specific compound and a gelling agent. The composition is mixed and emulsified by a conventional method.

Hereinafter, the preferable manufacturing method of gel-like oil-in-water cosmetics is demonstrated in detail.
For example, a) Aqueous medium, specific compound, gelling agent, emulsifier, and preservative are heated and mixed to obtain an aqueous phase composition, b) Organic ultraviolet absorber, specific powder, emulsifier, emollient, and emulsion stability And an agent is heated and mixed to obtain an oil phase composition, and c) an aqueous phase composition and an oil phase composition are mixed with stirring to carry out emulsification dispersion.
In addition, it is preferable that a water phase composition and an oil phase composition are heated (for example, 65 degreeC-90 degreeC) in the case of mixing.

  The method for emulsifying and dispersing is not particularly limited, and examples thereof include a stirrer, paddle mixer, impeller mixer, homomixer, disper mixer, ultramixer, homogenizer, high-pressure homogenizer, and ultrasonic homogenizer.

The heating temperature when the water phase composition and the oil phase composition are heated and mixed is not particularly limited, and a preferable range can be appropriately set, and is usually set within a range of 65 ° C to 90 ° C. It is preferable to do. By this heating, the water phase composition and the oil phase composition are prepared with the components to be dissolved dissolved.
Moreover, when using a homogenizer in the case of emulsification dispersion | distribution, as the conditions, normally, each component can be stirred at 500 rpm-8000 rpm for 5 minutes-60 minutes. In addition, the emulsification dispersion may be performed two or more times by changing the conditions.

  EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to the following examples unless it exceeds the gist thereof.

[Example 1 to Example 8, Comparative Example 1 to Comparative Example 12]
[Preparation of cosmetics]
The components constituting the oil phase compositions described in Tables 1 to 6 below were heated and dissolved at 80 ° C. to obtain oil phase compositions (the numerical values described in the respective component columns in Tables 1 to 6 are contained). Amount (% by mass)).
Similarly, the components constituting the aqueous phase compositions described in Tables 1 to 6 below were heated and dissolved at 80 ° C. to obtain aqueous phase compositions (described in the column of each component in Tables 1 to 6). The numerical value indicates the content (mass%).
The obtained oil phase composition and aqueous phase composition were mixed and stirred using a homogenizer (HM-310 manufactured by AS ONE Co., Ltd.) at 1000 rpm for 3 minutes and then at 3000 rpm for 3 minutes to obtain a crude emulsion. .
Next, the obtained crude emulsion was cooled to 40 ° C., and adjusted to pH 6.4 to 6.8 using a 0.8 mol / L potassium hydroxide aqueous solution.
As described above, the oil-in-water cosmetics of Examples 1 to 8, the oil-in-water cosmetics of Comparative Example 1, Comparative Example 3 to Comparative Example 12, and the cosmetic of Comparative Example 2 were prepared.
Example 1 described in Table 1 and Table 3 below is described for comparison with other Examples and Comparative Examples, and is the same, and also described in Tables 2 to 6 below. Example 2 was described for comparison with other examples and comparative examples, and is all the same.

The detail of each component described in the following Tables 1 to 6 is as follows.
BG: 1,3-butanediol (1,3-butylene glycol)
-DPG: Dipropylene glycol-Diethylaminohydroxybenzoyl hexyl benzoate: Ubinal (registered trademark) A Plus Granular, BASF Japan Ltd.-Bisethylhexyloxyphenol methoxyphenyl triazine: Tinosolve (registered trademark) S, BASF Japan Ltd.-Dimethicodiethylben Zalmalonate: Polysilicone-15
Isotridecyl isononanoate: EMALEX (registered trademark) INTD-139 (Nippon Emulsion)
・ (Acrylates / alkyl acrylate (C10-30)) crosspolymer: Carbopol ULTREZ-20 (Lubrizol Advanced Materials)
Carboxyvinyl polymer: Carbopol 980 (Lubrizol Advanced Materials)
PEG-30 phytosterol: NIKKOL (registered trademark) BPS-30 (Nikko Chemical Co., Ltd.)
PEG / PPG / polybutylene glycol-8 / 5/3 glycerin: WILBRIDE S-75 (NOF Corporation)
・ Lauroyl sarcosine isopropyl: Erdu SL-205 (Ajinomoto Co., Inc.)

[Evaluation]
Each cosmetic was evaluated as follows.
The evaluation results are shown in Tables 1 to 6 below.

1. Whether or not a gel shape was formed For each of the cosmetics of Examples 1 to 8 and Comparative Examples 1 to 12, whether or not a gel shape was formed was visually confirmed.

2. Sensory evaluation For each of the cosmetics of Examples 1 to 8 and Comparative Examples 1 to 12, the freshness felt when applied to the face, stickiness after application to the skin (immediately after application), and moisturizing feeling ( Immediately after application) was evaluated.
Each cosmetic 55 μL of Examples 1 to 8 immediately after preparation and Comparative Examples 1 to 12 was used by 8 panelists specializing in cosmetics evaluation, and the above three points were judged. .
And how the panelists felt was scored in five stages. The scoring criteria are as follows.
-Scoring criteria-
5: Feeling freshness, stickiness, or the persistence of moisturizing feeling 4: Feeling freshness, stickiness, or the persistence of moisturizing feeling 3: Feeling the sustainability of freshness, stickiness, or moisturizing feeling a little 2: Does not feel the continuity of freshness, stickiness, or moisturizing feeling 1: Does not feel the continuity of freshness, stickiness, or moisturizing feeling Averages each paneler's scoring results and rounds off to two decimal places The obtained numerical value was used as the evaluation result.

3. Evaluation of UV shielding ability About the cosmetics of Example 1 and Comparative Examples 1 to 5, the ultraviolet shielding ability was evaluated by the following method.
That is, based on the in vitro measurement method of ISO 24443, 32.5 mg of cosmetics of Example 1 and Comparative Examples 1 to 5 were applied to a polymethyl methacrylate plate (PMMA plate, HELIOPLATE HD6) to a uniform thickness, and a measurement sample. Was made. Two measurement samples were prepared for each sample.
About this measurement sample, the value calculated with the said apparatus was made into SPF value using the SPF (Sun Protection Factor) analyzer (UV-2000S by Labsphere). In addition, the SPF value was obtained by measuring two samples (5 = n = 5) for each of the two samples, and taking the average value.
When the SPF value was 20 or more, it was “G1”, and when it was less than 20, “NG”.

As shown in Table 1, the oil-in-water cosmetic of Example 1 contains an organic ultraviolet absorber, an aqueous medium, a specific compound, a gelling agent, and a specific powder. As well as having a function, it is understood that it is excellent in freshness, stickiness, and sustainability of moisturizing feeling.
As shown in Table 2, in Comparative Examples 6 to 10 using a known moisturizing agent other than the specific compound, it can be seen that the comparison with Example 2 is inferior in freshness, stickiness, and durability of the moisturizing feeling.
As shown in Table 3, Example 2 in which the value of n of the specific compound is 10 and Example 4 in which the value of n of the specific compound is 20 are those in which the value of n is outside the range of 10-25. It turns out that stickiness is suppressed rather than Example 3 and Example 5. FIG.
As shown in Table 4, when the content of the specific compound is 5% by mass (Example 2) compared to Example 6 in which the content of the specific compound is 2% by mass (Example 2), the moisturizing feeling is maintained and the stickiness is increased. It turns out that it is excellent in the effect suppressed and becomes further excellent in these effects by becoming 10 mass% or more (Example 7).
As shown in Table 5, Example 2 using an alkyl-modified carboxyvinyl polymer as a gelling agent is superior to Example 8 using a carboxyvinyl polymer in the persistence of moisturizing feeling and suppression of stickiness. I understand.
As shown in Table 6, even when dimethicodiethylbenzalmalonate (powder) was used as the organic ultraviolet absorber, no specific powder was used (Comparative Example 12). It can be seen that the sticky suppression effect is inferior to 2.

Claims (9)

An organic UV absorber,
An aqueous medium;
Polyoxyalkylene methyl glucoside represented by the following general formula (1);
One or more gelling agents selected from the group consisting of a carboxyvinyl polymer and an (acrylates / alkyl acrylate (C10-30)) crosspolymer ;
A core-shell structure having a coating layer containing a silicone resin on the surface of the core part containing silicone rubber, and a powder having a silicone resin on at least a part of the surface;
The content of the polyoxyalkylene methyl glucoside represented by the general formula (1) with respect to the total amount of the gel-like oil-in-water cosmetic is 1% by mass to 12% by mass , the total content of the aqueous medium to the total amount is not less than 55 wt%, gel-like oil-in-water type cosmetic.

In general formula (1), R represents a hydrogen atom or a methyl group, and n representing the average number of added moles of ethylene oxide or propylene oxide is 5 to 50.   The gel-like oil-in-water cosmetic according to claim 1, wherein the organic ultraviolet absorber contains a silicone type ultraviolet absorber.   The gel-like oil-in-water cosmetic according to claim 2, wherein the silicone-type ultraviolet absorber is dimethicodiethylbenzalmalonate.   The gel-like oil-in-water cosmetic according to any one of claims 1 to 3, wherein in the general formula (1), n representing an average added mole number of ethylene oxide or propylene oxide is 10 to 25. The gel-like oil-in-water cosmetic according to any one of claims 1 to 4 , wherein the silicone resin in the powder is a vinyl dimethicone / methicone silsesquioxane crosspolymer. The gel-like oil-in-water cosmetic according to any one of claims 1 to 5, wherein the content of the gelling agent with respect to the total amount of the gel-like oil-in-water cosmetic is 0.01% by mass or more and 5% by mass or less. Fee. The gel-like oil-in-water cosmetic according to any one of claims 1 to 6, wherein the content of the powder with respect to the total amount of the gel-like oil-in-water cosmetic is 0.1% by mass or more and 5% by mass or less. . The gel-like oil-in-water type according to any one of claims 1 to 7, wherein the content of the organic ultraviolet absorber relative to the total amount of the gel-like oil-in-water cosmetic is 0.01% by mass or more and 30% by mass or less. Cosmetics. The gel-like water according to any one of claims 1 to 8, wherein the aqueous medium contains a water-soluble solvent, and the content of the water-soluble solvent with respect to the total amount of the gel-like oil-in-water cosmetic is 25% by mass or less. Oil-type cosmetics.