JP7373916B2 - Water-in-oil emulsion cosmetics - Google Patents

Description

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

BACKGROUND ART Cosmetics that adhere closely to the skin, provide a uniform finish, and have excellent long-lasting makeup have been studied.
For example, Patent Document 1 discloses that a water-in-oil emulsion cosmetic containing silicone resin spherical elastic powder, dextrin fatty acid ester, non-volatile phenyl-modified silicone, and volatile silicone oil is less likely to cause streaks during application. It is stated that it can be applied quickly to the skin, has excellent pore coverage, and provides a uniform and matte finish.
Patent Document 2 discloses that a water-in-oil emulsion cosmetic containing a siliconized polysaccharide compound, a specific ester oil, and a hydrophobized colored pigment has no film feeling on the skin after application, and the skin after application does not feel like a film. It is stated that the finish is uniform, looks glossy, and does not look powdery.

Japanese Patent Application Publication No. 2017-114831 JP 2018-35092 Publication

However, conventional cosmetics do not give a glossy, uniform finish to the skin after application, and give the skin a tight feeling that is felt when the skin is dry.
Another problem was that after applying the cosmetic, it felt powdery, and over time, the powder accumulated in the wrinkles, making the wrinkles more noticeable.

The present inventors have developed a water-in-oil emulsion cosmetic that solves the above problems by using a combination of a nonvolatile phenyl-modified silicone, a specific ester oil, a film-forming agent, and a hydrophobized colored pigment. I found out what I can get.

The present invention comprises the following components (A), (B), (C) and (D):
(A) nonvolatile phenyl-modified silicone 0.1 to 10% by mass,
(B) ester oil selected from pentaerythritol fatty acid ester and dipentaerythritol fatty acid ester that is liquid at 25 ° C. 0.01 to 30% by mass,
(C) Film forming agent 0.01 to 20% by mass,
(D) Hydrophobized colored pigment 1 to 20% by mass
The present invention relates to a water-in-oil emulsion cosmetic containing the following.

The water-in-oil emulsion cosmetic of the present invention provides a glossy and uniform finish, does not leave the skin feeling tight or powdery after application, and does not cause noticeable wrinkles over time. .

The phenyl-modified silicone of component (A) is nonvolatile. Here, non-volatile means that the mass reduction rate is 1% or less after spreading 1 g of the oil in a glass Petri dish with a diameter of 48 mm and leaving it for 24 hours at 25° C. and normal pressure.
In addition, from the viewpoint of improving the glossy and uniform finish, component (A) preferably has a viscosity of 5 mm ² /s or more at 25° C., and preferably 500 mm ² /s or less.
Examples of component (A) include phenyl trimethicone, diphenylsiloxyphenyl trimethicone, trimethylsiloxyphenyl dimethicone, diphenyl dimethicone, and trimethylpentaphenyltrisiloxane.
Among these, from the viewpoint of improving a glossy and uniform finish, one or more selected from phenyl trimethicone and diphenylsiloxyphenyl trimethicone are preferred, and diphenylsiloxyphenyl trimethicone is more preferred.

Component (A) can be used alone or in combination of two or more, and the content is determined to improve the glossy and uniform finish, reduce the tightness and powdery feeling on the skin after application, and improve the appearance over time. However, from the viewpoint of suppressing the appearance of wrinkles, the amount is 0.1 to 10% by mass, preferably 0.3 to 7% by mass, and more preferably 1 to 3% by mass in the total composition.

The ester oil of component (B) is selected from pentaerythritol fatty acid ester and dipentaerythritol fatty acid ester which are liquid at 25°C.
Liquid means that it has fluidity and is liquid at 25°C. Moreover, the melting point of component (B) is preferably 20° C. or lower.

The fatty acid constituting component (B) may be either a saturated fatty acid or an unsaturated fatty acid, and from the viewpoint of reducing the powdery feeling on the skin after application and suppressing the appearance of wrinkles over time, Saturated fatty acids are preferred. Further, it may be either a straight-chain fatty acid or a branched-chain fatty acid, and branched-chain fatty acids are preferred from the viewpoint of reducing the powdery feeling on the skin after application and suppressing the appearance of wrinkles over time. Moreover, these fatty acids may have a hydroxy group.
Such fatty acids include, for example, caproic acid, caprylic acid, 2-ethylhexanoic acid, isononanoic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, hydroxystearic acid, arachidic acid, and behenic acid. Examples include lignoceric acid, cerotic acid, montanic acid, melisic acid, and the like. Furthermore, among the above saturated fatty acids, saturated fatty acids having 16 to 28 carbon atoms are preferred. Examples of such fatty acids include palmitic acid, stearic acid, isostearic acid, hydroxystearic acid, arachidic acid, behenic acid, lignoceric acid, cerotic acid, and montanic acid. Further, saturated fatty acids having 16 to 22 carbon atoms are more preferable, and examples thereof include palmitic acid, stearic acid, isostearic acid, hydroxystearic acid, arachidic acid, and behenic acid.

The alcohols constituting component (B) are pentaerythritol and dipentaerythritol, and among them, from the viewpoint of reducing the powdery feeling on the skin after application and suppressing the appearance of wrinkles over time, Dipentaerythritol is preferred.
Component (B) includes pentaerythritol fatty acid esters such as pentaerythrityl (behenic acid/polyhydroxystearate), and dipentaerythritol fatty acid esters such as dipentaerythrityl tripolyhydroxystearate and pentysostearic acid. Examples include dipentaerythrityl, dipentaerythrityl tetraisostearate, and the like.
Component (B) is preferably dipentaerythritol fatty acid ester, from the viewpoint of reducing the powdery feeling on the skin after application and suppressing the appearance of wrinkles over time. One or more selected from dipentaerythrityl isostearate and dipentaerythrityl tetraisostearate are more preferred, one or more selected from dipentaerythrityl pentaisostearate and dipentaerythrityl tetraisostearate are even more preferred, and dipentaerythrityl tetraisostearate is even more preferred. preferable.

As dipentaerythrityl tripolyhydroxystearate, commercially available products such as SALACOS WO-6 (manufactured by Nisshin Oilio Co., Ltd.) and as dipentaerythrityl pentysostearate such as SALACOS DP-518N (manufactured by Nisshin Oillio Co., Ltd.) can be used.
Further, dipentaerythrityl tetraisostearate and pentaerythrityl (behenic acid/polyhydroxystearate) can be produced according to known methods. For example, dipentaerythrityl tetraisostearate can be produced by the method described in the production example below.

Component (B) can be used alone or in combination, and improves the glossy and uniform finish, reduces the feeling of tightness and powdery feeling on the skin after application, and provides a long-lasting effect over time. From the viewpoint of suppressing the appearance of wrinkles, the content is 0.01 to 30% by mass in the entire composition, preferably 0.05 to 10% by mass, more preferably 0.08 to 5% by mass, and 0.01 to 30% by mass, more preferably 0.08 to 5% by mass. More preferably 3 to 2% by mass.

In the present invention, the mass ratio (A)/(B) of component (A) to component (B) improves the glossy and uniform finish, reduces the tightness and powdery feeling on the skin after application, and reduces the From the viewpoint of suppressing wrinkles from becoming noticeable even after the passage of time, it is preferably 0.1 to 20, more preferably 0.7 to 13, and even more preferably 2 to 7.

The film forming agent of component (C) is commonly used in cosmetics, and includes trimethylsiloxysilicic acid, fluorine-modified silicone resin, acrylic silicone copolymer, and the like.

Trimethylsiloxysilicic acid is a compound having a crosslinked structure with a siloxane structure as its main skeleton, and is represented by [(CH ₃ ) ₃ SiO _1/2 ] _S [SiO ₂ ] _T (S is 1 to 3, T is preferably 0.5 to 8).

Furthermore, the material may be in any form such as liquid, gum, paste, or solid at 25° C., but a solid material is preferred from the viewpoint of preventing wrinkles from becoming noticeable over time. Moreover, it can also be used by dissolving it in a solvent. Examples of the solvent include silicone oil and hydrocarbon oil, and from the viewpoint of suppressing the appearance of wrinkles over time, methyltrimethicone, dimethylpolysiloxane (2cs), dimethylpolysiloxane (6cs), octa One or more selected from methylcyclotetrasiloxane, decamethylcyclopentasiloxane, and isododecane are preferred, and one or more selected from methyltrimethicone, dimethylpolysiloxane (2cs), and decamethylcyclopentasiloxane are preferred. More preferably, one or more selected from dimethylpolysiloxane (2cs) and decamethylcyclopentasiloxane are even more preferred.

As the trimethylsiloxysilicate, the cosmetic display name "Trimethylsiloxysilicate" (INCI name "Trimethylsiloxysilicate") is preferable, and SR1000 (manufactured by Momentive Performance Materials), and the one pre-dissolved in a solvent is KF-7312T. (60% by mass methyl trimethicone solution), KF-7312L (50% by mass dimethylpolysiloxane (2cs) solution), KF-7312J (50% by mass decamethylcyclopentasiloxane solution), KF-7312K (50% by mass dimethylpolysiloxane (2cs) solution), Commercially available products such as siloxane (6cs) solution (manufactured by Shin-Etsu Chemical Co., Ltd.) can be used.

The fluorine-modified silicone resin has the following general formula (1):
R ¹ _g SiO _(4-g)/2 (1)
(In the formula, R ¹ is a hydrocarbon group having 1 to 8 carbon atoms, a phenyl group, a hydroxyl group, or the general formula -R ² -Rf (R ² is a divalent alkylene group having 2 to 6 carbon atoms, and Rf is a carbon (representing a perfluoroalkyl group of numbers 1 to 8), arbitrarily selected from a hydroxyl group and a functional group having the general formula -R ² -Rf, where g is an average number of 1.0≦g≦1. 8. Note that R ¹ may be the same or different)
It is preferable to have a structure represented by:

Further, the fluorine-modified silicone resin is preferably solid at 25°C. Moreover, it can also be used by dissolving it in a solvent.
Examples of the solvent include silicone oil, and examples of the silicone oil include octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dimethylpolysiloxane (2cs) from the viewpoint of suppressing the appearance of wrinkles over time. , dimethylpolysiloxane (10cs) is preferable, one or more types selected from decamethylcyclopentasiloxane and dimethylpolysiloxane (10cs) are more preferable, and decamethylcyclopentasiloxane is More preferred.

Such a fluorine-modified silicone resin is preferably given the cosmetic labeling name "trifluoroalkyldimethyltrimethylsiloxysilicate" (INCI name "Trifluoropropyldimethyl/Trimethylsiloxysilicate"), and is preferably XS66-B8226 (50% by mass decamethylsiloxysilicate) dissolved in a solvent in advance. Commercial products such as pentasiloxane solution) and XS66-B8636 (50% by mass dimethylpolysiloxane (10cs) solution) (manufactured by Momentive Performance Materials) can be used.

Examples of the acrylic silicone copolymer include vinyl polymers having a carbosiloxane dendrimer structure in the side chain, acrylic-silicone graft copolymers, and the like.
As the vinyl polymer having a carbosiloxane dendrimer structure in its side chain, it is preferable to use those described in JP-A-11-1530 and JP-A-2000-63225.
The vinyl polymer that has a carbosiloxane dendrimer structure in its side chain can be in any form such as liquid, gum, paste, or solid at 25°C, but it also suppresses the appearance of wrinkles over time. From the viewpoint of compatibility, solid materials are preferred. In addition, from the viewpoint of suppressing the appearance of wrinkles over time, a solution or dispersion diluted with a solvent is preferable. Among these, it is preferable to use it as a dispersion diluted with liquid oil, and it is preferable to use one or more selected from silicone oil and hydrocarbon oil, and from dimethylpolysiloxane, decamethylcyclopentasiloxane, and isododecane. It is more preferable to use one or more selected from among decamethylcyclopentasiloxane and isododecane, and even more preferable to use one or more selected from decamethylcyclopentasiloxane and isododecane.

As the vinyl polymer having a carbosiloxane dendrimer structure in the side chain, a silicone dendrimer/acrylic copolymer is preferable, and the cosmetic labeling name is "(Acrylates/Polytrimethylsiloxymethacrylate) Copolymer" (INCI name: "Acrylates/Polytrimethylsiloxymethacrylate Copolymer"). ) is preferable, and commercially available products such as FA4001CM (30% by mass decamethylcyclopentasiloxane solution) and FA4002ID (40% by mass isododecane solution) (manufactured by Toray Dow Corning) dissolved in advance in a solvent can be used. .

As the acrylic-silicone graft copolymer, it is preferable to use those described in JP-A-2-25411.
The acrylic-silicone graft copolymer is preferably one that is solid at 25° C. from the viewpoint of suppressing wrinkles from becoming noticeable over time.
Further, from the viewpoint of suppressing the appearance of wrinkles over time, it is preferable to use the material after dissolving it in a solvent. Examples of the solvent include silicone oil and hydrocarbon oil, and from the viewpoint of suppressing the appearance of wrinkles over time, solvents include methyl trimethicone, dimethylpolysiloxane (2cs), decamethylcyclopentasiloxane, and isododecane. One or more selected from among them are preferred, one or more selected from methyltrimethicone, dimethylpolysiloxane (2cs), and decamethylcyclopentasiloxane are more preferred, and decamethylcyclopentasiloxane is even more preferred.

As the acrylic-silicone graft copolymer, the cosmetic labeling name "(Acrylates/Dimethicone) Copolymer" (INCI name "Acrylates/Dimethicone Copolymer") is preferable. Commercially available products such as siloxane solution), KP549 (40% by mass methyl trimethicone solution), and KP550 (40% by mass isododecane solution) (manufactured by Shin-Etsu Chemical Co., Ltd.) can be used.

As the film forming agent of component (C), trimethylsiloxysilicic acid and fluorine-modified silicone are used from the viewpoint of reducing the tightness and powdery feeling of the skin after application and suppressing the appearance of wrinkles over time. One or more types selected from resins and acrylic silicone copolymers are preferred, and one or two types selected from trimethylsiloxysilicic acid, fluorine-modified silicone resins, and vinyl polymers having a carbosiloxane dendrimer structure in their side chains. The above are more preferable, one or more selected from trimethylsiloxysilicic acid and a vinyl polymer having a carbosiloxane dendrimer structure in the side chain are more preferable, and one or more selected from trimethylsiloxysilicic acid is more preferable. Even more preferred.

Component (C) can be used alone or in combination of two or more, and the content is determined to improve the glossy and uniform finish, reduce the tightness and powdery feeling on the skin after application, and improve the appearance over time. However, from the viewpoint of suppressing the appearance of wrinkles, the content is 0.01 to 20% by mass, preferably 0.1 to 12% by mass, more preferably 0.2 to 7% by mass, and 0.01 to 20% by mass, more preferably 0.2 to 7% by mass, in the total composition. More preferably 8 to 3% by mass.

In the present invention, the mass ratio (A)/(C) of component (A) to component (C) improves the glossy and uniform finish, reduces the tightness and powdery feeling on the skin after application, and reduces the From the viewpoint of suppressing wrinkles from becoming noticeable even after a period of time has elapsed, it is preferably 0.1 to 6, more preferably 0.31 to 3.2, and even more preferably 0.6 to 1.5.

In the present invention, the mass ratio (B)/(C) of component (B) to component (C) improves the glossy and uniform finish, reduces the tightness and powdery feeling on the skin after application, and reduces the From the viewpoint of suppressing wrinkles from becoming noticeable even after the passage of time, it is preferably 0.01 to 8, more preferably 0.02 to 4, even more preferably 0.08 to 1.6, and 0.2 ~0.7 is even more preferred.

Component (D) used in the present invention is a colored pigment that has been subjected to hydrophobization treatment.
Coloring pigments include those used in ordinary cosmetics, such as titanium oxide, finely divided titanium oxide, zinc oxide, finely divided zinc oxide, cerium oxide, aluminum oxide, yellow iron oxide, black iron oxide, red iron oxide, navy blue, and ultramarine. , metal oxides such as chromium oxide and chromium hydroxide, metal complexes such as manganese violet and cobalt titanate, and inorganic pigments such as carbon black; organic pigments such as tar pigments and lake pigments, and natural pigments such as carmine. Can be mentioned.
As the coloring pigment, at least one selected from titanium oxide, yellow iron oxide, black iron oxide, red iron oxide, fine particle titanium oxide, and fine particle zinc oxide is used to improve the glossy and uniform finish and give the skin a beautiful makeup effect. It is preferable to contain one or more kinds, and more preferably to contain at least one kind or two or more kinds selected from titanium oxide, yellow iron oxide, black iron oxide, red iron oxide, and particulate zinc oxide. It is more preferable to contain at least one or more selected from iron, black iron oxide, and red iron oxide.

Hydrophobic treatments for these color pigments include silicone treatment, fluorine treatment, fatty acid treatment, N-acyl amino acid treatment, and the like. Examples of silicone treatment include methylhydrogenpolysiloxane treatment, dimethylpolysiloxane treatment, alkyl alkoxysilane treatment, etc.; examples of fluorine treatment include perfluoroalkyl phosphate treatment, perfluoroalkyl alkoxysilane treatment, etc. Examples of the fatty acid treatment include stearic acid treatment, myristic acid treatment, etc., and examples of the N-acyl amino acid treatment include lauroyl lysine treatment, dilauroylglutamate lysine Na treatment, stearoylglutamate disodium treatment, lauroyl aspartate Na treatment, etc. .
Hydrophobic treatment includes silicone treatment, from the viewpoint of improving a glossy and uniform finish, reducing the feeling of tightness and powderiness on the skin after application, and suppressing the appearance of wrinkles over time. One or more types selected from N-acyl amino acid treatment are preferred, and one or two or more types selected from methylhydrogenpolysiloxane treatment, dimethylpolysiloxane treatment, disodium stearoylglutamate treatment, and sodium lauroyl aspartate treatment are more preferred. Preferably, one or more types selected from dimethylpolysiloxane treatment and disodium stearoylglutamate treatment are more preferred. Further, it is preferable to use silicone treatment and N-acyl amino acid treatment at the same time, and more preferably to use dimethylpolysiloxane treatment and diNa stearoylglutamate treatment at the same time.

In order to hydrophobize the colored pigment, dry treatment, wet treatment, etc. may be carried out by a conventional method.
The processing amount is preferably 0.1 to 20% by weight, more preferably 0.5 to 15% by weight, and even more preferably 1 to 10% by weight, based on the weight of the colored pigment.
Note that the content of component (D) means the mass including the hydrophobized agent.

Ingredient (D) can be used alone or in combination of two or more, and improves the glossy and uniform finish, reduces the powdery feeling on the skin after application, and prevents wrinkles from becoming noticeable even over time. From the viewpoint of suppressing this, the content is 1 to 20% by mass in the total composition, preferably 3 to 18% by mass, and more preferably 8 to 17% by mass.

The water-in-oil emulsion cosmetic of the present invention can further contain volatile oil, which reduces the feeling of tightness on the skin after application and suppresses the appearance of wrinkles over time. I can do it. Here, volatile means having a flash point of 35 to 100°C.
The volatile oil may be any oil commonly used in cosmetics, including silicone oil, hydrocarbon oil, and ether oil.
Examples of the silicone oil include linear dimethylpolysiloxane and cyclic dimethylpolysiloxane. The chain dimethylpolysiloxane may be either straight chain or branched, and examples of the straight chain include dimethylpolysiloxane (1.5cs), dimethylpolysiloxane (2cs), etc. Examples include methyl trimethicone, tris(trimethylsilyl)methylsilane, and tetrakis(trimethylsilyl)silane. Examples of the cyclic dimethylpolysiloxane include octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.
Examples of the hydrocarbon include isododecane, isotridecane, isohexadecane, light isoparaffin, light liquid isoparaffin, and the like, and examples of the ether oil include ethyl perfluorobutyl ether.

Among these, one or more selected from silicone oil and hydrocarbon oil are used from the viewpoint of reducing the feeling of tightness on the skin after application and suppressing the appearance of wrinkles over time. Preferably, one or more selected from dimethylpolysiloxane (2cs), decamethylcyclopentasiloxane, isododecane, and light isoparaffin are more preferable, and one or more selected from dimethylpolysiloxane (2cs), decamethylcyclopentasiloxane, or Two or more types are even more preferable.

One type or two or more types of volatile oils can be used, and the content is determined from the viewpoint of reducing the feeling of tightness on the skin after application and suppressing the appearance of wrinkles over time. It is preferably 5 to 40% by weight, more preferably 8 to 35% by weight, and even more preferably 10 to 30% by weight.

The water-in-oil emulsion cosmetic of the present invention can further contain a plate-like powder, which reduces the powdery feeling on the skin after application and suppresses the appearance of wrinkles over time. be able to.
Here, the term "plate-like" includes not only a plate-like shape in a narrow sense, but also powders having shapes such as flakes and scales.
The plate-like powder preferably has a volume average particle diameter of 1 to 100 μm, and preferably 8 to 60 μm, from the viewpoint of reducing the powdery feeling on the skin after application and suppressing the appearance of wrinkles over time. is more preferable, and even more preferably 10 to 30 μm. Further, the aspect ratio is preferably 10 to 80, more preferably 15 to 70.

In the present invention, the volume average particle diameter is measured using a laser diffraction scattering particle size distribution analyzer (manufactured by Seishin Enterprise Co., Ltd., LMS-350). Further, in the present invention, the volume average particle diameter is a volume-based average particle diameter, and is defined as a 50% median diameter.
Further, the aspect ratio is calculated from the ratio of the volume average particle diameter and the average thickness of the particles, and is defined as aspect ratio=(volume average particle diameter/average thickness).
The average thickness of the particles is determined by averaging the thicknesses of 10 to 50 base particles observed and measured using a scanning electron microscope or a transmission electron microscope.

Examples of the plate-shaped powder include plate-shaped cerium oxide, plate-shaped barium sulfate, talc, mica, plate-shaped kaolin, sericite, muscovite, plate-shaped synthetic mica, phlogopite, rhodochite, biotite, lithium mica, Platy silicic anhydride, plate hydroxyapatite, bentonite, montmorillonite, hectorite, plate ceramic powder, plate alumina, plate boron nitride, plate iron oxide, titanium oxide coated mica, titanium oxide treated mica, bismuth oxychloride , titanium oxide-coated bismuth oxychloride, titanium oxide-coated talc, fish scale foil, titanium oxide-coated colored mica, aluminum, sheet glass powder, and the like.
The plate-shaped powders include talc, mica, plate-shaped synthetic mica, plate-shaped boron nitride, and plate-shaped powder, from the viewpoint of reducing the powdery feeling on the skin after application and suppressing the appearance of wrinkles over time. Preferably, one or more types selected from glass powder are preferred, one or more types selected from talc, plate-shaped synthetic mica, and plate-shaped boron nitride are more preferable, and one type selected from talc and plate-shaped boron nitride. Or two or more kinds are more preferable, and talc is even more preferable.

Further, the plate-shaped powder can be used as it is, or if necessary, it can be subjected to hydrophobization treatment as in the case of component (D).
In addition, when plate-like powder is hydrophobized, its content, volume average particle diameter, and particle thickness are the same as those including the hydrophobized agent. means.

One type or two or more types of plate-like powder can be used, and the content is determined from the viewpoint of reducing the powdery feeling on the skin after application and suppressing wrinkles from becoming noticeable even with the passage of time. It is preferably 1 to 30% by weight, more preferably 1.5 to 20% by weight, even more preferably 2 to 10% by weight, and even more preferably 2.5 to 7% by weight in the total composition.

The water-in-oil emulsion cosmetic of the present invention can further contain spherical powder, which reduces the powdery feeling on the skin after application and suppresses the appearance of wrinkles over time. I can do it.
Here, the spherical shape includes a true sphere, a substantially spherical shape, and a spheroid, and may also be a spherical powder having an uneven surface.
The spherical powder preferably has a volume average particle diameter of 1 to 50 μm, and preferably 2 to 30 μm, from the viewpoint of reducing the powdery feeling on the skin after application and suppressing the appearance of wrinkles over time. The thickness is more preferably 3 to 20 μm.

Examples of the spherical powder include spherical polyamide resin, spherical polymethyl methacrylate resin, spherical polyurethane resin, spherical silicone resin, spherical polyethylene resin, spherical polystyrene resin, spherical cellulose resin, spherical polylactic acid resin, and spherical silica. . Among them, spherical polymethyl methacrylate resin, spherical polyurethane resin, spherical silicone resin, spherical cellulose resin, spherical polylactic acid resin, and spherical silica are preferable, and spherical polyurethane resin, spherical cellulose resin, spherical polylactic acid resin, and spherical silica are more preferable. More preferred is a spherical polyurethane resin.

One type or two or more types of spherical powder can be used, and the content is determined from the viewpoint of reducing the powdery feeling on the skin after application and suppressing the appearance of wrinkles over time. The amount in the composition is preferably 0.1 to 20% by weight, more preferably 0.2 to 10% by weight, and even more preferably 0.3 to 5% by weight.

In the water-in-oil emulsion cosmetic of the present invention, the water content is preferably 10 to 70% by mass, more preferably 15 to 60% by mass, and even more preferably 20 to 50% by mass in the total composition. .

In addition to the above-mentioned components, the water-in-oil emulsified cosmetic of the present invention contains components normally used in cosmetics, such as powders other than the above, oily components other than the above, polymer compounds other than the above, surfactants, It can contain antioxidants, fragrances, pigments, preservatives, pH adjusters, blood circulation promoters, cooling agents, antiperspirants, bactericidal agents, skin activators, humectants, refreshing agents, and the like.

The water-in-oil emulsion cosmetic of the present invention can be produced according to a conventional method, and can be in the form of a liquid, a milky lotion, a paste, a cream, a gel, etc. Cream-like is preferred.
In addition, the water-in-oil emulsion cosmetic of the present invention can be used as a makeup base, foundation, concealer; makeup cosmetics such as blusher, eye shadow, mascara, eyeliner, eyebrow, overcoat agent, lipstick; sunscreen emulsion; It can be applied as UV protection cosmetics such as sunscreen creams. Among these, makeup bases and foundations are more preferred.
The water-in-oil emulsified cosmetic composition of the present invention can be used alone or in layered powder cosmetics such as liquid foundation, powder foundation, and white powder.

Production Example 1 (Production of dipentaerythrityl tetraisostearate):
In a 3L four-bottle flask equipped with a stirrer, a thermometer, a nitrogen gas blowing tube, and a water separation tube, 58.4 g (0.23 mol) of dipentaerythritol [trade name: Di Pentalit, manufactured by Koei Chemical Industry Co., Ltd.] was added. 293.9 g (1.03 mol) of 2-(1,3,3-trimethyl)butyl-5,7,7-trimethyloctanoic acid [trade name: isostearic acid, manufactured by Nissan Chemical Industries, Ltd.] was charged (raw material preparation). Mass ratio = 10:50.3). Thereafter, 0.05% by mass of dibutyltin oxide (catalyst) and 5% by mass of xylene (refluxing solvent) of the total amount charged were added, and the reaction was carried out at 200 to 250°C for about 21 hours with stirring. After the reaction was completed, the refluxing solvent, xylene, was distilled off under reduced pressure. The reaction product from which xylene was removed was adsorbed with activated clay, then cooled to about 60° C., filtered, and deodorized and distilled in a conventional manner to obtain 245 g of dipentaerythrityl tetraisostearate.
The viscosity of dipentaerythrityl tetraisostearate at 25°C was 350,000 mPa·s, and it was liquid at 25°C. The viscosity was measured using a Brookfield viscometer (BH type) at 25°C with rotor No. 6 at 2 rpm.

Examples 1 to 7 and Comparative Examples 1 to 3
A water-in-oil emulsion cosmetic (foundation) having the composition shown in Table 1 was produced, and the skin had a uniform glossy feeling after application, no tightness on the skin after application, no powdery feeling on the skin after application, and The inconspicuousness of wrinkles 5 hours after application was evaluated. The results are also shown in Table 1.

(Manufacturing method)
The powder phase components were mixed and ground, added to the separately mixed oil phase component, and dispersed for 10 minutes using a disper (2000 rpm). Thereafter, water phase components were added and stirred for 10 minutes using a disper (800 rpm) to obtain a water-in-oil emulsified cosmetic.

(Evaluation method)
(1) Even skin glow after application:
Five expert evaluators applied 0.16 g of each water-in-oil emulsion cosmetic to the face using a sponge, and visually evaluated the uniform glossiness of the face immediately after application on the following five scales. The results were shown as the total score of the five participants. Note that uniform glossiness means that the entire face is shiny and the entire face looks bright.
5; The gloss appears to be quite uniform.
4; Gloss appears uniform.
3; The gloss appears to be somewhat uniform.
2; The gloss does not look very uniform.
1; The gloss clearly does not appear uniform.

(2) No feeling of tightness on the skin after application:
Five expert evaluators applied 0.16 g of each water-in-oil emulsion cosmetic to the face using a sponge, and sensory-evaluated the firmness of the face immediately after application on the following five scales. The results were shown as the total score of the five participants. Note that the feeling of tightness is a feeling that is felt when the skin is dry, and indicates a feeling that the skin is stretched even though it feels like bare skin.
5; No feeling of tightness at all.
4; No feeling of tightness.
3; There is not much feeling of tightness.
2; There is a feeling of tightness.
1; There is a considerable feeling of tightness.

(3) No powdery feeling on the skin after application:
Five expert evaluators applied 0.16 g of each water-in-oil emulsion cosmetic to the face using a sponge, and visually evaluated the powdery feeling immediately after application on the following five scales. The results were shown as the total score of the five participants.
5; No powdery feeling at all.
4; No powdery feeling.
3; Not much powdery feeling.
2; There is a powdery feeling.
1; Considerable powdery feel.

(4) Inconspicuousness of wrinkles after 5 hours of application:
Five expert evaluators applied 0.16 g of each water-in-oil emulsion cosmetic to the face using a sponge, and 5 hours after application, evaluated the appearance of fine lines around the mouth. Visual evaluation was performed on the following 5 scales compared to before application. The results were shown as the total score of the five participants.
5; Wrinkles are clearly not noticeable.
4; Wrinkles are not noticeable.
3; Wrinkles are not very noticeable.
2; Wrinkles are slightly noticeable.
1; Wrinkles are quite noticeable.

Prescription example 1
A water-in-oil emulsion cosmetic (foundation) having the composition shown in Table 2 was produced in the same manner as in Examples 1 to 7.
The resulting water-in-oil emulsion cosmetic has a uniform glossy feel on the skin after application, does not have a powdery or tight feeling, and does not show wrinkles even after time passes.

Claims (2)

The following ingredients (A), (B), (C) and (D):
(A) nonvolatile phenyl-modified silicone 0.1 to 10% by mass,
(B) ester oil selected from pentaerythritol fatty acid ester and dipentaerythritol fatty acid ester that is liquid at 25 ° C. 0.01 to 30% by mass,
(C) 0.01 to 20% by mass of one or more film forming agents selected from trimethylsiloxysilicic acid and acrylic silicone copolymers;
(D) Hydrophobized colored pigment, including a colored pigment treated simultaneously with silicone treatment and N-acyl amino acid treatment, 1 to 20% by mass
Contains
A water-in-oil emulsion cosmetic in which the mass ratio (B)/(C) of component (B) to component (C) is 0.02 to 2. The water-in-oil emulsion cosmetic according to claim 1, wherein the mass ratio (A)/(B) of component (A) to component (B) is 0.1 to 20.