JP6888997B2 - Hydrous powder cosmetics - Google Patents

Description

The present invention relates to a water-containing powder cosmetic containing a water-soluble ultraviolet absorber and releasing water by rubbing.

Conventionally, a technology for hydrous powder cosmetics, which is a powdered cosmetic that is liquefied by rubbing during use and produces liquid properties (Patent Document 1), has been developed, and a drug such as vitamin C, which is not stable in an aqueous solution It can maintain storage stability in cosmetics and is widely accepted in the market. In addition, even though it is a powder, it can be used for make-up cosmetics because it gives a fresh and refreshing feeling, and when pearl and lame agents are mixed, the texture (pearl and lame) and color that they have. There has been a technique (Patent Document 2) that can exhibit high transparency without impairing the feeling and color. However, in order to impart an ultraviolet protective effect to such cosmetics, it is difficult to include an ultraviolet absorber in terms of stability, and when the ultraviolet scattering powder is used to impart an ultraviolet protective effect, water is used during use. After being released, there was a tendency to strongly feel the squeaky feeling of the ultraviolet scattering powder in the cosmetic film.

JP-A-5-65212 Japanese Patent Application Laid-Open No. 2003-267826

It is difficult to eliminate the squeaky feeling when applying the water-containing powder cosmetics, and it has been desired to develop a water-containing powder cosmetics having less squeaky feeling.

In view of this situation, as a result of repeated studies to solve the above problems, the present inventor contains ^{a hydrophobic powder having a specific surface area of 80 m 2} / g or more, an aqueous gelling agent, water, and a water-soluble ultraviolet absorber. The water-containing powder cosmetics have an ultraviolet protective effect, but by suppressing the content of the ultraviolet scattering agent to a low level, they have an excellent feel that there is no powdery or squeaky feeling when used, and the above problems can be solved. Found and completed the present invention.

That is, the present invention
(1) The following components (A) to (D);
(A) Hydrophobic powder having a specific surface area of 80 m ² / g or more (B) Aqueous gelling agent (C) Water (D) Phenylbenzimidazole sulfonic acid is contained, and water is released by rubbing. It is intended to provide a hydrous powder cosmetic characterized by.

The product of the present invention is a water-containing powder cosmetic that reduces the squeaky feeling at the time of application, which is peculiar to the water-containing powder cosmetic, and has a good fresh feel and spread and spread.

Hereinafter, the present invention will be described in detail.
The hydrous powder cosmetic of the present invention is a cosmetic which is in a powder form before use, but at the time of use, an internal aqueous component is released by rubbing.
In the present invention, an aqueous gel is formed by incorporating the component (B) aqueous gelling agent and the component (D) water-soluble ultraviolet absorber into the component (C) water, and the aqueous gel is used as the component (A). It is coated with a hydrophobic powder having a specific surface area of 80 m ² / g or more to obtain a hydrous powder cosmetic.

^{A hydrophobic powder having a specific surface area (BET method) of 80 m 2} / g or more, which is a component (A) of the present invention, may have this specific surface area and its powder surface may be hydrophobic. A powder that is hydrophobic in itself, a powder obtained by surface-treating a hydrophilic powder with a commonly known hydrophobic agent, or a powder obtained by further treating a hydrophobic powder with a hydrophobic agent to increase the degree of hydrophobicity. Etc., and one or more of these hydrophobic powders can be used.
In the present invention, whether or not the powder is hydrophobic is determined by dispersing the powder in water at 25 ° C., putting 100 ml of water and 5 g of powder in a beaker, and stirring at 1000 rpm for 5 minutes using a desper. When this was done, the powder that floated on water without settling or dispersing was used as a hydrophobic powder.

As the component (A), a hydrophobic powder that is hydrophobic in itself, for example, silicone resin powder, alkyl (meth) acrylate (co) polymer powder, polystyrene powder, polyethylene powder, N-acyllysine powder, quaternary Examples thereof include organic resin powder such as polyethylene fluoride powder and epoxy resin powder, and metal soap powder such as aluminum stearate, zinc laurate and magnesium stearate.

Examples of the powder hydrophobized by surface treatment include titanium oxide, zinc oxide, silicic anhydride, aluminum oxide, magnesium oxide, zirconium oxide, magnesium carbonate, calcium carbonate, aluminum silicate, magnesium silicate, and silicate. Inorganic powders such as magnesium aluminum silicate, silicon carbide, barium sulfate, boron nitride, bismuth oxychloride, titanium mica, organic powders such as silk powder, starch, nylon, crystalline cellulose, fine particles Titanium oxide coated mica titanium, fine particles Examples thereof include composite powders such as zinc oxide-coated mica titanium and barium sulfate-coated mica titanium.

Examples of the hydrophobizing agent used for hydrophobizing powder include various trimethylsilylating agents, organosilicon compounds such as dimethylpolysiloxane and methylhydrogenpolysiloxane, perfluoroalkyl phosphoric acid, and perfluoropolyether alkyl phosphoric acid. , Fluorosilicon compounds such as fluoroalkylsilane, metal soaps, waxes, fats and oils, other oils such as hydrocarbons, etc. Among them, organosilicon compounds and fluorine compounds are powdered in terms of storage stability. preferable.

As the component (A), hydrophobic anhydrous silicic acid is preferable from the viewpoint of storage stability, and in particular, fuzzy anhydrous silicic acid having an average particle size of 0.001 to 0.1 μm is preferably hydrophobized. Examples of the hydrophobic silicic acid in this range include those commercially available as AEROSIL R974, AEROSIL R972, AEROSIL RX200, AEROSIL RX300 (all manufactured by Nippon Aerosil), and Cabosil TS-530 (manufactured by Cabot). Be done.

The content of the component (A) of the present invention is not particularly limited, but is preferably 0.1 to 7% by mass (hereinafter, simply referred to as "%") in the hydrous powder cosmetics from the viewpoint of storage stability. More preferably, it is 2 to 5%.

The aqueous gelling agent of the component (B) of the present invention gels water by dissolving or swelling in water, and for example, agar, guar gum, locust bean gum, quince seed gum, farsenlan, carrageenan. , Soda alginate, gellan gum, pectin, carrageenan and other plant-based natural polymers, gelatin and other animal-based natural polymers, methyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl cellulose and other cellulose derivatives, etc. Vinyl carboxylate (co) polymer such as semi-synthetic polymer, polyvinyl alcohol, polyvinylpyrrolidone, vinyl acetate (co) polymer, (meth) acrylic acid (co) polymer, sodium (meth) acrylate (co) weight Coalescence, carboxyvinyl polymer, alkyl-modified carboxyvinyl polymer, synthetic polymer such as polyvinylpyrrolidone, water-swellable clay mineral such as sodium magnesium silicate, hydrous aluminum silicate, montmorillonite, saponite, hectrite, fluorotetrasilicon mica, etc. , And one or more of these can be used. These aqueous gelling agents are like agar, gelatin, carrageenan, gellan gum, magnesium silicate, sclerothium gum, etc. from the viewpoint of ease of crushing during high-speed shearing and freeze crushing and improvement of storage stability. It is preferable to form a hard gel with water.

The content of the component (B) of the present invention is not particularly limited as long as the component (C) can be gelled, but from the viewpoint of storage stability, 0.01 to 10% in the hydrous powder cosmetic is preferable, and further. It is preferably 0.05 to 8%. Further, in terms of gel formation, the total amount of the components (B) and (C) is preferably 0.1 to 10%, more preferably 0.5 to 8%.

The component (C) of the present invention may be purified water, hot spring water, deep water, steam-distilled water of plants such as aloe vera, witch hazel, hamamelis, cucumber, lemon, orange, lavender, and rose.

The content of the component (C) of the present invention is not particularly limited, but it is 10 in that the cosmetic can be stably powdered, the water is released well at the time of rubbing, and the freshness can be sufficiently felt. It is preferably ~ 99%, more preferably 20-80%, and further preferably 40-70%.

In the present invention, the component (C) and the components (B) and (D) form an aqueous gel, but in addition to these, other aqueous components are required as long as the effects of the present invention are not impaired. Can be contained.

As the aqueous component, any component soluble in water can be used without particular limitation. For example, lower alcohols such as ethyl alcohol, propylene glycol, 1,3-butylene glycol, 1,2-pentanediol, and the like. Examples thereof include glycols such as dipropylene glycol and polyethylene glycol, glycerols such as glycerin, diglycerin and polyglycerin, and phenoxyethanol, and one or more of these can be used.

The water-soluble ultraviolet absorber of the component (D) of the present invention is not particularly limited as long as it is usually used in cosmetics, for example, 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, and the like. 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone, 2,2', 4,4'-tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methyl Benzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4-phenylbenzophenone, 2-ethylhexyl-4'-phenyl-benzophenone-2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, Benzophenone-based UV absorbers such as 4-hydroxy-3-carboxybenzophenone; Benzophenone-based UV absorbers such as phenylbenzoimidazole-5-sulfonic acid and its salts, phenylene-bis-benzoimidazole-tetrasulfonic acid and its salts; Benzophenone-based UV absorbers such as methylenebis-benzotriazolyl-tetramethylbutylphenol; 3- (4'-methylbenzylene) -d, l-camphar, 3-benzylene-d, l-camphar, urocanic acid, ethyl urocanate Esters and the like can be mentioned, and one or more of these can be used. Among them, a benzimidazole-based ultraviolet absorber is preferable from the viewpoint of storage stability of the hydrous powder, and phenylbenzimidazole sulfonic acid is particularly preferably used.

The content of the component (D) of the present invention is preferably 0.1 to 10%, particularly preferably 0.5 to 5%, in terms of the ultraviolet protection effect and the stability of the hydrous powder over time.

Further, in the hydrous powder cosmetic of the present invention, if necessary, as long as the effect of the present invention is not impaired, the components usually used in the cosmetic, that is, powders other than the component (A), oily components, and surfactants. Activators, refreshing agents such as menthol, film-forming agents, hydrophilic ultraviolet absorbers, salts, pH regulators, antioxidants, moisturizers, beauty ingredients such as vitamin C derivatives, preservatives such as paraoxybenzoic acid ester and phenoxyethanol , Perfume and the like can be appropriately contained in order to impart various effects.

As the powder other than the above-mentioned components, a feel adjustment and a make-up effect can be imparted. If these are usually used for cosmetics, they are not particularly limited by the shape such as spherical, plate-shaped, spindle-shaped, needle-shaped, particle size, porous, non-porous, etc., and are inorganic powders. Examples thereof include body types, bright powders, organic powders, pigment powders, and composite powders.
Specifically, titanium oxide, zinc oxide, corn, ultramarine, magnesium carbonate, calcium carbonate, aluminum hydroxide, chromium hydroxide, carbon black, aluminum silicate, magnesium silicate, magnesium aluminum silicate, smectite, bentonite, kaolin. , Inorganic powders such as silicon carbide, barium sulfate, boron nitride, bismuth oxychloride, mica titanium, iron oxide-coated mica, iron oxide-coated mica titanium, organic pigment-coated mica titanium, aluminum powder and other bright powders, Examples thereof include organic powders such as magnesium stearate, zinc stearate, N-acylidine, polystyrene and nylon, and one or more of these can be used. Further, these powders may be one kind or a composite of two or more kinds, and are known by using a fluorine compound, a silicone-based oil agent, a metal soap, wax, a surfactant, an oil or fat, a hydrocarbon, or the like. It may be surface-treated by the method, but does not contain the component (A).

For example, the oily component is not particularly limited as long as it is a raw material usually used in cosmetics, and can be used. For example, regardless of the origin of animal oils, vegetable oils, synthetic oils, etc., and the properties of solid oils, semi-solid oils, liquid oils, volatile oils, etc., hydrocarbons, fats and oils, higher alcohols, waxes, hardened oils, etc. , Ester oils, fatty acids, silicone oils, fluorine-based oils, lanolin derivatives, oil-based gelling agents, oil-soluble ultraviolet absorbers and the like. Specifically, hydrocarbons such as liquid paraffin, squalane, vaseline, polyisobutylene, polybutene, paraffin wax, ceresin wax, microcrystallin wax, fishertropus wax, olive oil, castor oil, jojoba oil, mink oil, macadamian. Vegetable oils such as nut oil, waxes such as beeswax, carnauba wax, candelilla wax, gay wax, mokuro, montan wax, cetyl 2-ethylhexanoate, isotridecyl isostearate, isopropyl myristate, isopropyl palmitate, octyl myristate. Dodecyl, cetyl trioctanoate, glyceryl tri2-ethylhexanoate, polyglyceryl diisostearate, diglyceryl triisostearate, glyceryl tribehenate, pentaerythrite rosinate, neopentyl glycol dioctanoate, diisostearyl malate, cholesterol fatty acid ester , N-lauroyl-L-glutamate di (cholesteryl behenyl octyldodecyl), esters such as macadamian nut fatty acid phytosteryl, stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid, oleic acid and other fatty acids, Higher alcohols such as cetyl alcohol, stearyl alcohol, cetostearyl alcohol, and behenyl alcohol, silicone oils such as dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, and fluorine-modified silicone, perfluoropolyether, perfluorodecane, etc. , Fluorine oils such as perfluorooctane, lanolin, lanolin acetate, lanolin fatty acid isopropyl, lanolin derivatives such as lanolin alcohol, dextrin fatty acid ester, sugar fatty acid ester, starch fatty acid ester, 12-hydroxystearic acid, aluminum stearate, steer Examples thereof include oil-based gelling agents such as calcium phosphate, ethyl paraaminobenzoate, and the like. These oils may be used alone or in combination of two or more, if necessary.

The surfactant is not particularly limited as long as it is a surfactant generally used in cosmetics, and nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants and the like are used. To. Examples of the moisturizer include proteins, mucopolysaccharides, collagen, elastin, keratin and the like. Examples of the antioxidant include α-tocopherol, ascorbic acid and the like, examples of the beauty ingredient include vitamins, anti-inflammatory agents, crude drugs and the like, and examples of the preservative include paraoxybenzoic acid ester and the like.

The method for producing the hydrous powder cosmetic of the present invention is not particularly limited. For example, an aqueous gel containing the component (B) aqueous gelling agent and (D) water-soluble ultraviolet absorber is formed in the component (C) water. The aqueous gel is coated with a hydrophobic powder having a specific surface area of 80 m ² / g or more to form a powder, and the aqueous gel is made into powdery aqueous gel particles by high-speed shearing, freeze pulverization, or the like, and then powdered. A method of coating this powder with a hydrophobic powder can be mentioned.

The aqueous gel containing the components (B) to (D) is preferably used in the state of aqueous gel particles solidified into particles from the viewpoint of storage stability. The method for producing the aqueous gel particles is not particularly limited, and examples thereof include a method of heating the aqueous gel and shearing at high speed, a method of freeze pulverization, and the like. Examples of the high-speed shearing method include a method using a high-speed pin mill, a cutter mixer, and the like. Moreover, as a method of freezing and pulverizing, a method of freezing and pulverizing an aqueous gel using a refrigerant such as liquid nitrogen can be mentioned. The average particle size of the obtained aqueous gel particles is preferably 1 to 400 μm.

The method for coating the aqueous gel particles with the hydrophobic powder is not particularly limited. For example, the aqueous gel particles are placed in a stirrer and stirred at a low temperature so as not to melt or aggregate due to an increase in temperature. , A method of adding the hydrophobic powder of the component (A), mixing and stirring to coat the mixture. Examples of the stirrer for mixing include a stirrer in which a jacket having a cooling mechanism is mounted, and a stirrer blade having a shape with less collision and contact with the wall surface or bottom surface of the jacket is mounted.

In preparing the hydrous powder composition, the particle size of the component (A) needs to be smaller than the particle size of the aqueous gel particles, but from the viewpoint of coating efficiency on the surface of the aqueous gel particles, the aqueous gel It is preferably 1/10 or less of the particles. The ratio of the aqueous gel particles to the hydrophobic powder is affected by the particle size and the like, but the mass ratio is preferably 100: 0.5 to 100: 25.

The water-containing powder cosmetic obtained in this manner can be used as it is as a cosmetic, or can be further mixed with other ingredients for use. The hydrous powder cosmetic of the present invention can be applied as a sunscreen cosmetic, a makeup cosmetic such as white powder, foundation, blusher or eye color, a whitening powder, a body powder, an antiperspirant powder and the like.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.

Examples 1 to 9 and Comparative Examples 1 to 3: Hydrous powder white powder The hydrous powder sunscreen white powder having the compositions of Examples 1 to 9 and Comparative Examples 1 to 3 shown in Table 1 was prepared by the following production method. The obtained water-containing powder sunscreen white powder was evaluated for its freshness in use, no squeaky feeling during use, no stickiness on the back skin, transparency of the film as a cosmetic film, and stability over time. went. The results are also shown in Table 1.

(Production method)
A. Aqueous gel particles (about 10 to 100 μm) were obtained by heating and dissolving (1) to (6) at 85 ° C., cooling and solidifying, and then pulverizing at −80 ° C.
B. At room temperature, (7) to (10) were added to A and mixed with a Henschel mixer (manufactured by Mitsui Miike Co., Ltd.) to prepare a water-containing composition.
C. B was added to (11) which had been mixed in advance, and the mixture was mixed with a Henschel mixer to prepare a hydrous powder sunscreen white powder.

(Evaluation method)
Regarding the evaluation items (a) to (e) below, each sample is subjected to a usage test by 20 specialized panels, and each panel evaluates and scores on a 7-point scale according to the following evaluation criteria, and each sample is paneled. The average value was calculated from the scores of all the members, and the judgment was made in four stages according to the following judgment criteria. In addition, (a) to (2) were evaluated immediately after use, and (e) after follow-up.
Evaluation item:
(B) Freshness during use (B) No squeaky feeling (C) No stickiness on the back skin (D) Transparency of the film (E) Stability over time

Evaluation criteria:
(Score): (Evaluation)
6: Very good 5: Good 4: Somewhat good 3: Normal 2: Somewhat bad 1: Bad 0: Very bad Judgment criteria:
(Average score): (Judgment)
5.0 or higher: ◎
3.5 or more and less than 5.0: ○
1.5 or more and less than 3.5: △
Less than 1.5: ×

(result)
As is clear from Table 1, the hydrous powder sunscreen white powders of Examples 1 to 9 have an excellent feeling of use that gives freshness, less squeaky feeling and stickiness of the back skin, and a transparent cosmetic film. It was obtained and was excellent in stability over time.
On the other hand, Comparative Examples 1 and 2 containing silicic acid anhydride having a small specific surface area instead of the component (A) have poor shape retention, therefore have poor stability, little change in liquefaction, and are inferior in freshness. It was a thing.
In Comparative Example 3 in which a large amount of an ultraviolet scattering agent is contained instead of the water-soluble ultraviolet absorber of the component (D), the ultraviolet scattering agent rapidly deteriorates the stability of the system, and the transparency of the film is also satisfactory. There wasn't.

Example 10: Hydrous powder foundation (with sunscreen function)
(Ingredient) (%)
1. 1. Agar 3.0
2. Carrageenan 0.1
3. 3. Glycerin 1.0
4.1,3-butylene glycol 10.0
5. Methyl paraoxybenzoate 0.3
6. Phenylbenzimidazole sulfonic acid 3.0
7. Remaining amount of purified water 8. Hydrophobicized silicic acid anhydride (specific surface area 300 m ² / g, average particle size 7 nm)
5.0
9. Silicone compound treated titanium oxide 10.0
10. Silicone compound treated talc 10.0
11. Boron Nitride 10.0
12. Fluorine compound treated Bengala 0.2
13. Fluorine compound treated yellow iron oxide 1.5
14. Fluorine compound treated black iron oxide 0.1
(Production method)
A. Aqueous gel particles (140 to 250 μm) were obtained by heating and dissolving (1) to (7) at 85 ° C., cooling and solidifying, and then pulverizing at −80 ° C.
B. (8) was added to A and mixed with a Henschel mixer to prepare a water-containing composition.
C. (9) to (14) were mixed, B was added thereto, and the mixture was mixed to prepare a hydrous powder foundation.
The hydrous powder foundation of the present invention has good storage stability, has an excellent feeling of use that gives freshness when used, and is excellent without squeaky feeling or stickiness of the back skin. , A transparent film could be obtained.

Example 11: Hydrous powder Body powder (with sunscreen function)
(Ingredient) (%)
1. 1. Agar 5.0
2. Carrageenan 0.1
3.1,3-butylene glycol 10.0
4. Methyl paraoxybenzoate 0.3
5. Phenylbenzimidazole sulfonic acid 3.0
6. Remaining amount of purified water 7. Fluorine compound treated silicic acid anhydride (specific surface area 200 m ² / g, average particle size 7 nm)
5.0
8. Fluorine compound treated titanium oxide 5.0
9. Silicone treated fine particle zinc oxide 1.0
10. Silicone treated talc 10.0

(Production method)
A. Aqueous gel particles (about 5 to 150 μm) were obtained by heating and dissolving (1) to (6) at 85 ° C., cooling and solidifying, and then pulverizing at −80 ° C.
B. (7) was added to A and mixed with a Henschel mixer to prepare a water-containing composition.
C. (8) to (10) were mixed, and B was added thereto and mixed to prepare a hydrous powder body powder (with a sunscreen function).
The water-containing powder body powder of the present invention has good storage stability, has an excellent feeling of use that gives freshness when used, and has excellent spreadability and adhesion during application. Further, the texture of the skin was adjusted and a transparent film could be obtained.

Claims (5)

The following components (A) to (D);
(A) Hydrophobic powder having a specific surface area of 80 m ² / g or more (B) Aqueous gelling agent (C) Water (D) Phenylbenzimidazole sulfonic acid is contained, and water is released by rubbing. Powder cosmetics. The water-containing powder cosmetic according to claim 1, wherein the aqueous gel component containing the components (B) to (D) is coated with the component (A). The hydrous powder cosmetic according to claim 1 or 2 , wherein the component (B) is one or more selected from agar, gelatin, carrageenan, gellan gum and sodium magnesium silicate. The hydrous powder cosmetic according to any one of claims 1 to 3 , wherein the component (A) is hydrophobic silica. The following components (A) to (D);
(A) Hydrophobic powder having a specific surface area of 80 m ² / g or more (B) Aqueous gelling agent (C) Water (D) A method for producing a hydrous powder cosmetic containing phenylbenzimidazole sulfonic acid. A method for producing a hydrous powder cosmetic, wherein the aqueous gel component containing the components (B) to (D) is freeze- crushed into a powder and then coated with the component (A).