JP2019156676A - Metal sulfate particles, and cosmetics containing the same - Google Patents

Abstract

To provide metal sulfate particles capable of neutralizing basic substances, such as ammonia, effectively by approaching sulcus cutis and pores when applied on a skin.SOLUTION: This invention provides metal sulfate particles, the particles of a metal sulfate which is a sulfate of 3-numbered metal salt, the metal sulfate particle having a spherical shape and having a median diameter of 200 μm or lower. The metal sulfate particle is a spherical one, so that it can approach sulcus cutis and pores by rolling on a skin when applied on the skin.SELECTED DRAWING: Figure 4

Description

  The present invention relates to spherical particles of metal sulfate, which is a sulfate of a trivalent metal salt. The present invention also relates to a cosmetic containing spherical particles of the metal sulfate.

  Deodorant cosmetics have been developed for deodorizing and deodorizing body odors because body odors such as smoldering odor, sweat odor, and foot odor may cause discomfort to surrounding people. Known causative substances of body odor include lower fatty acids such as isovaleric acid and caproic acid, nitrogen-containing compounds such as ammonia and butylamine, sulfur-containing compounds such as indole and ethyl mercaptan, volatile steroid compounds and nonenal. In addition, as a deodorant product for deodorizing these body odors, antiperspirants that suppress sweating by using astringent aluminum compounds and bactericidal ingredients prevent bacterial growth and prevent sweat and sebum Known are bactericides that prevent decomposition, deodorants that eliminate odors generated by using metal oxides, plant extracts, and the like, and masking agents that mask odors using fragrances. For example, Patent Document 1 discloses a deodorant cosmetic containing magnesium oxide powder as an active ingredient. In this deodorant cosmetic, magnesium oxide exhibits a deodorizing action by neutralizing lower fatty acids which are the main component of sweat odor. However, it was not able to cope with body odors such as ammonia.

  As an astringent aluminum compound, aluminum sulfate salts such as aluminum potassium sulfate and aluminum ammonium sulfate are known. The aluminum sulfate salt is supplied in various forms such as liquid, powder and block. For example, Patent Document 2 describes a block-like aluminum sulfate salt obtained by cooling and solidifying a slurry obtained by adding a powder of dry potassium aluminum sulfate pulverized to a hot solution of potassium aluminum sulfate.

JP 2001-187721 A JP 2002-193615 A

  Deodorant cosmetics are required to deodorize body odors derived from basic substances such as ammonia. In order to deodorize these basic substances, a method of neutralizing them by adding an acidic substance or the like can be considered. Here, the present inventors paid attention to the fact that metal sulfate, which is a sulfate of a trivalent metal salt, is acidic, and used this sulfate metal salt particles to eliminate body odor caused by basic substances such as ammonia. It was considered to smell. Since basic substances such as ammonia accumulate in the skin's skin grooves and pores together with sweat, effective deodorization can be achieved by approaching the metal sulfate particles to the skin grooves and pores. it is conceivable that. However, since the conventional metal sulfate supplied as a powder is prepared by pulverization, it has a polyhedral shape with corners, and these polyhedral particles are difficult to slip even when applied to the skin, and the skin of the skin. There is a problem that it is not possible to sufficiently approach grooves and pores.

  Therefore, an object of the present invention is to provide metal sulfate particles capable of effectively neutralizing a basic substance such as ammonia by approaching skin skin grooves and pores when applied to the skin. There is.

As a result of diligent investigations on the above-mentioned problems, the present inventors have found that the above-mentioned problems can be solved by setting the particle shape to spherical and the median diameter to 200 μm or less, and the present invention has been completed. It came to do.
That is, this invention is the following metal sulfate salt particles and cosmetics containing the same.

The metal sulfate salt particles of the present invention are metal sulfate particles that are trivalent metal salt sulfates, characterized in that the particles have a spherical shape and a median diameter of 200 μm or less.
According to this feature, since the shape of the particles is spherical, the particles are slippery when applied to the skin, and the particles can be sufficiently approached to the skin grooves and pores. In addition, since it is slippery when applied, it can provide a smooth feel.
The size of the pores and the width of the skin groove are several hundred microns, although they vary depending on the skin quality. Therefore, by setting the particle diameter of the metal sulfate salt particles to 200 μm or less as the median diameter, when applied to the skin, many metal sulfate salt particles get stuck in the pores and skin grooves and remain in the pores and skin grooves. it can. Therefore, it is possible to effectively neutralize basic substances such as ammonia contained in sweat accumulated in pores and skin grooves.
In addition, since the metal sulfate metal particles of the present invention easily stay in pores and skin grooves, an effect of tightening the pores and skin grooves by a converging action is also expected.
In addition, the metal sulfate salt particles of the present invention have good fluidity because of the spherical shape of the particles, and also have the effect of excellent handling properties in the production of cosmetics.

Furthermore, an embodiment of the metal sulfate metal salt particles of the present invention is characterized by being hollow.
According to this feature, since the surface area is large, the property of being easily dissolved in sweat is imparted. Therefore, it can dissolve quickly in sweat accumulated in the skin groove and pores, and neutralize basic substances such as ammonia.

Furthermore, one embodiment of the metal sulfate metal salt particles of the present invention is a hydrate.
According to this feature, since the solubility is excellent, it can quickly dissolve in sweat accumulated in the skin groove and pores and neutralize basic substances such as ammonia.

Furthermore, one embodiment of the metal sulfate metal salt particles of the present invention is an anhydride.
According to this feature, since the deliquescence is small, there is an effect that the storage stability of the product is excellent.

The cosmetic of the present invention is characterized by containing the above-mentioned metal sulfate particles.
According to this feature, the metal sulfate particles can sufficiently approach pores and skin grooves, so that makeup that can effectively neutralize basic substances such as ammonia accumulated in the pores and skin grooves. Fees can be provided. In addition, according to this cosmetic, since the metal sulfate particles having an astringent action can approach pores and skin grooves, it is possible to provide a cosmetic that can effectively tighten pores and skin grooves. it can.

Furthermore, one embodiment of the cosmetic of the present invention is characterized by being an antiperspirant, body powder, face powder, foundation, makeup base or teak.
According to this feature, metal sulfate particles remain in pores and skin grooves, effectively neutralizing basic substances such as ammonia, and effectively tightening pores and skin grooves. can do.

  According to the present invention, it is possible to provide metal sulfate particles capable of effectively neutralizing a basic substance such as ammonia by approaching the skin crevice and pores of the skin when applied to the skin. it can.

It is a schematic explanatory drawing which shows the structure of skin. It is a schematic explanatory drawing which shows a mode that sweat flows into a skin groove. It is a schematic explanatory drawing which shows the state where the spherical metal sulfate particle approached the pore. It is a SEM image of spherical aluminum potassium sulfate particles. It is a SEM image of hollow aluminum potassium sulfate particles. It is a SEM image of non-spherical aluminum potassium sulfate particles. It is a schematic explanatory drawing for measuring the average friction coefficient (MIU) of particle | grains.

Next, the best mode for carrying out the present invention will be described.
[Metal sulfate particles]
The metal sulfate salt particles of the present invention are metal sulfate particles that are trivalent metal salt sulfates, characterized in that the particles have a spherical shape and a median diameter of 200 μm or less.
According to this feature, since the shape of the particles is spherical and the median diameter is 200 μm or less, slipping is good when applied to the skin, and the particles can be sufficiently approached to pores and skin grooves. And it melt | dissolves in the sweat collected in the pore and the skin groove, and can neutralize basic substances, such as ammonia in sweat, effectively.

  The mechanism of sweating and the action of the metal sulfate particles of the present invention will be described with reference to the drawings. FIG. 1 is a schematic explanatory view showing the structure of the skin. As shown in FIG. 1, the skin is formed in a region where the skin groove 20 intersects the skin groove 20 formed in a net shape in the epidermis, the skin mound 30 formed in the region surrounded by the skin groove 20, and the skin groove 20. It has a pore 10. There is a hair root in the deep layer of the pore 10, and hair grows from the pore 10.

Sweat is known to come from two types of sweat glands, the eccrine or apocrine glands. The eccrine gland is a sweat gland that is distributed almost throughout the body and sweats mainly for temperature regulation. The eccrine gland opens in the cuticle 30, and sweat from the eccrine gland flows into the skin groove 20, flows through the skin groove 20, and accumulates in the pores 10 (see FIG. 2). The sweat from the eccrine gland is colorless and odorless and contains almost no odorous components.
On the other hand, the apocrine gland is a sweat gland that is abundant in specific sites such as armpits, nipples, lower abdomen. Moreover, the apocrine gland is open to the hair root, and the sweat coming out of the apocrine gland accumulates in the pore 10 as it is. It is known that sweat from the apocrine gland contains components such as lipids and proteins, and these components are easily decomposed into microorganisms and become odor-causing components.

  As shown in FIG. 3, since the metal sulfate salt particles of the present invention have a spherical shape, when they are applied to the skin, they roll on the skin hill 30 and can sufficiently approach the pores 10. Moreover, the metal sulfate particles accumulated in the skin groove 20 can also flow with sweat and approach the pores 10. And in the pore 10, basic substances, such as ammonia which is a causative component of the smell in sweat, can be neutralized effectively.

<Metal sulfate salt>
The metal sulfate of the present invention is a sulfate of a trivalent metal salt. In addition, the metal sulfate of the present invention may be a double salt of a trivalent metal sulfate and a monovalent cation sulfate. The trivalent metal salt is not particularly limited, and examples thereof include aluminum ions and iron ions. From the viewpoint of providing a converging action, it is preferable that aluminum ions are preferably included.
Moreover, although a monovalent cation is not specifically limited, For example, monovalent metal ions, such as potassium and sodium, an ammonium ion, etc. are mentioned. From the viewpoint of odor suppression, it is preferable to include a monovalent metal ion such as potassium or sodium.

Preferably, it is a compound represented by the following chemical formula (1).
M ¹⁺ M ³⁺ (SO ₄ ) ₂ or M ³⁺ ₂ (SO ₄ ) ₃ (1)
[ ^Wherein M ¹⁺ is K ⁺ , Na ⁺ , NH ₄ ⁺ or a mixture thereof. M ³⁺ is Al ³⁺ , Fe ³⁺ or a mixture thereof. ]
More preferred are aluminum sulfate salts, more preferred are ammonium aluminum sulfate, sodium aluminum sulfate, and potassium aluminum sulfate, and particularly preferred are sodium aluminum sulfate and potassium aluminum sulfate.

The metal sulfate salt of the present invention may be a hydrate or an anhydride.
Hydrates are substances containing water, and hydrates such as monohydrates and dihydrates can be mentioned depending on the number of hydrated water. In the hydrate of the present invention, the number of hydrated water is not particularly limited, but octahydrate and dodecahydrate are preferable. Hydrate of metal sulfate has excellent solubility in water, so it can quickly dissolve in sweat collected in skin grooves and pores and more effectively neutralize basic substances such as ammonia. .

  An anhydride is a state in which a substance containing water of crystallization or water of hydration loses the water. By making the metal sulfate salt anhydrous, solubility in water and the like is reduced, and deliquescence can be prevented. Therefore, stable quality can be maintained as a stick-like antiperspirant or the like.

  The median diameter of the metal sulfate metal particles of the present invention is 200 μm or less, and the shape thereof is spherical. The spherical shape does not mean only a true spherical shape, but may be an ellipse, a substantially spherical shape, or a surface having fine holes or irregularities. In the case of an elliptical shape or a substantially spherical shape, a spherical shape is preferred if the ratio of the minor axis to the major axis is 1: 1 to 1: 2.

The lower limit of the median diameter is preferably 1 μm or more, more preferably 3 μm or more, and particularly preferably 5 μm or more. The upper limit is preferably 100 μm or less, more preferably 50 μm or less, and particularly preferably 30 μm or less.
By setting the median diameter of the metal sulfate salt particles within the above range, when applied to the skin, many metal sulfate salt particles can fit into the pores and skin grooves and remain in the pores and skin grooves. Therefore, it is possible to effectively neutralize basic substances such as ammonia contained in sweat accumulated in pores and skin grooves.
In addition, the median diameter of this invention is a volume median diameter (Volume Median Diameter: VMD) obtained by measuring using a laser diffraction / scattering method (particle diameter distribution measuring apparatus HELOS; manufactured by Nippon Laser Co., Ltd.). .

Further, the shape of the metal sulfate metal salt particles of the present invention is preferably hollow.
The hollow shape means a state in which primary particles are present only on the surface layer portion of the spherical portion and has an internal space, and the shell between the internal space and the external space has an opening. Also good.
The thickness of the surface layer portion is not particularly limited, but is preferably about 0.1 μm to 5 μm.
By making the metal sulfate particles into hollow particles, the surface area is increased, so that the property of being easily dissolved in sweat can be imparted. Therefore, it can dissolve quickly in sweat accumulated in the skin groove and pores, and neutralize basic substances such as ammonia.

[Method for producing metal sulfate particle]
A method for preparing the spherical metal sulfate particles is not particularly limited, and a generally known granulation method such as a spray drying method (spray drying method), a fluidized bed granulation method, or the like can be used. In particular, it is preferable to use a spray drying method because the components can be spheroidized aesthetically.

  In order to prepare the spherical particles by the spray drying method, for example, the following method can be used. First, the metal sulfate is dissolved or uniformly dispersed in one or more dispersion solvents such as water, ethanol, isopropyl alcohol, and acetone to prepare a metal sulfate solution or slurry.

  When preparing the solution or slurry of the metal sulfate, an excipient or the like may be added as necessary. The excipient is a material that does not have physiological activity, and examples thereof include starch, dextrin, lactose, maltose, glucose, maltitol, sorbitol, and the like. By adding an excipient, the shape of the particles, the solubility of the metal sulfate metal salt particles, and the like can be adjusted.

The concentration of the metal sulfate solution is not particularly limited, but is generally 1 to 80% by mass. As a minimum, Preferably it is 3 mass% or more, More preferably, it is 5 mass% or more, Most preferably, it is 8 mass% or more. As an upper limit, Preferably it is 60 mass% or less, More preferably, it is 50 mass% or less, Most preferably, it is 45 mass% or less. Productivity is improved by increasing the concentration of the solution. On the other hand, when the concentration of the solution is lowered, adhesion of particles during spray fog drying can be prevented, and spherical particles having excellent aesthetics can be obtained.
The hollow particles can be obtained by adjusting the concentration of the metal sulfate solution, the type of solvent, and the like.

  Next, the solution or slurry of the metal sulfate salt is spheroidized using the spray drying method (spray drying method) or the like. The temperature of the hot air in the spray drying is preferably 150 to 300 ° C, more preferably 200 to 250 ° C.

  Finally, the spheroidized particles may be sintered using a heat treatment furnace or the like. Sintering is performed in an inert gas atmosphere such as nitrogen or argon. The sintering temperature is preferably 100 to 500 ° C, more preferably 200 to 300 ° C. The time required for this sintering is preferably about 5 to 15 hours.

By this sintering, spherical particles can be obtained and impurities due to the granulation treatment can be removed.
Furthermore, the hydrate or anhydride of the metal sulfate can be made by controlling the sintering conditions.
Further, the obtained spherical particles can be classified and used as necessary.

[Cosmetics containing metal sulfate particles]
Although it does not restrict | limit especially as cosmetics of this invention, It can utilize suitably for the cosmetics aiming at deodorizing, the cosmetics aiming at the tightening of the pore etc. by an astringent action, etc. For example, antiperspirant, body powder, face powder, foundation, makeup base, teak and the like can be mentioned.

Next, the cosmetic of the present invention will be specifically described.
<Antiperspirant>
An antiperspirant refers to a product that can generate an antiperspirant effect by spraying, applying, and adhering the antiperspirant agent to the skin.
Examples of the form of the antiperspirant include a stick type, a gel type, and a cream type that are directly applied to the skin, and an aerosol type and a non-aerosol type that are used by spraying on the skin.

<Body powder>
Body powder is a cosmetic used to suppress oil glare and give a natural finish on the mat.

<Face powder>
Face powder is a cosmetic that is used to finish makeup and suppresses the shine and stickiness of sebum and foundation.

<Foundation>
The foundation has functions such as adjusting the color of the skin, covering such as spots and freckles, protection from ultraviolet rays, and protection from external stress. A makeup cosmetic to be applied after applying a makeup base on the skin.

<Makeup base>
A makeup base is used as a base before applying a makeup product. The makeup of a makeup product such as a foundation is improved in adhesion (attachment) and covering power (paste). It is a cosmetic that is used for the purpose of preventing makeup and makeup loss and maintaining the makeup effect.

<Teak>
Teak is a blusher that is applied to the cheeks to make the skin look brighter or to add a shadow to create a three-dimensional effect. Dosage forms include solid, cream, liquid, and stick.

  In the cosmetic of the present invention, the content of the metal sulfate salt particles is not particularly limited, but is preferably 0.1 to 100.0% by mass. As a minimum, More preferably, it is 1.0 mass% or more, More preferably, it is 5.0 mass% or more, Most preferably, it is 10.0 mass% or more. As an upper limit, More preferably, it is 50.0 mass% or less, More preferably, it is 30 mass% or less, Most preferably, it is 20.0 mass% or less. Within the above range, the effect of neutralizing basic substances such as ammonia in sweat collected in the pores and the effect of tightening the pores and the like by the astringent action are sufficiently exhibited.

  The cosmetic of the present invention can contain other components usually used in cosmetics depending on the application. For example, inorganic pigments, extender pigments, polymer powders, oily raw materials, surfactants, moisturizers, thickeners, polymers, UV protection agents, antioxidants, antioxidant aids, sequestering agents, stearic acid Metal soap such as magnesium, whitening agent, anti-wrinkle agent, skin roughening agent, acne agent, deodorant agent, cooling agent, astringent, antibacterial agent, organic pigment, natural pigment, fragrance, vitamins, emollient Etc.

Examples of inorganic pigments include extender pigments, colored pigments, and white pigments.
The extender pigment is used to maintain the dosage form of the product, whereby the usability (extensibility and adhesion) of the product and gloss can be adjusted. Specific examples include mica, sericite, talc, kaolin, synthetic phlogopite, calcium carbonate, magnesium carbonate, anhydrous silicic acid, aluminum oxide, barium sulfate and the like.
The color pigment is for adjusting the color tone of the product, and specific examples thereof include bengara, yellow iron oxide, black iron oxide, chromium oxide, ultramarine blue, bitumen, and carbon black.
The white pigment can adjust the hiding power in addition to the role of adjusting the color tone of the product. Specific examples include titanium dioxide and zinc oxide.

  Specific examples of the polymer powder include polyethylene powder, polymethyl methacrylate powder, polyethylene terephthalate / polymethyl methacrylate laminated powder, nylon powder, polyurethane powder, and silicone powder.

  Examples of the oily raw material include fats and oils, waxes, hydrocarbons, higher fatty acids, higher alcohols, esters, silicone oils and the like. More specifically, the oils and fats are olive oil, camellia oil, macadamia nut oil, castor oil, etc., the waxes are carnauba wax, candelilla wax, jojoba oil, beeswax, lanolin, etc., and the hydrocarbons are liquid paraffin, paraffin. , Petrolatum, ceresin, microcrystalline wax, squalane, etc., higher fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, etc., higher alcohols include cetyl alcohol, stearyl alcohol, isostearyl alcohol, 2- As octyldodecanol, the esters include isopropyl myristate, 2-octyldodecyl myristate, cetyl 2-ethylhexanoate, diisostearyl malate, and the like. As silicone oil, methylpolysiloxane Methylphenyl polysiloxane, decamethylcyclopentasiloxane, high polymerization methylpolysiloxane or the like are exemplified.

  Examples of the surfactant include an anionic surfactant, a cationic surfactant, an amphoteric surfactant, and a nonionic surfactant. More specifically, examples of the anionic surfactant include higher fatty acid soap, alkyl sulfate ester salt, polyoxyalkyl ether sulfate salt, acyl N-methyl taurate salt, alkyl ether phosphate ester salt, N-acyl amino acid salt, and the like. Examples of cationic surfactants include alkyltrimethylammonium chloride, dialkyldimethylammonium chloride, and benzalkonium chloride. Examples of amphoteric surfactants include alkyldimethylaminoacetic acid betaine, alkylamidopropyldimethylaminoacetic acid betaine, and 2-alkyl-N-. Examples of nonionic surfactants such as carboxymethyl-N-hydroxyethylimidazolinium betaine include polyoxyethylene type, polyhydric alcohol ester type, ethylene oxide / propylene oxide block copolymer, etc.

  Examples of the humectant include glycerin, propylene glycol, dipropylene glycol, 1,3-butylene glycol, polyethylene glycol, sorbitol, sodium lactate, sodium 2-pyrrolidone-5-carboxylate, sodium hyaluronate, and the like.

  Examples of the thickener include quince seed gum, xanthan gum, sodium carboxymethyl cellulose, carboxyvinyl polymer, and the like.

  Examples of the polymers include polyvinyl alcohol, polyvinyl pyrrolidone, nitrocellulose, and high molecular silicone.

  Examples of the ultraviolet protective agent include ultraviolet absorbers such as benzophenone derivatives, paraaminobenzoic acid derivatives, methoxycinnamic acid derivatives, and salicylic acid derivatives, and ultraviolet scattering agents such as fine particle titanium oxide, fine particle zinc oxide, and fine particle iron oxide.

  Examples of the antioxidant include tocopherols, BHT, gallic acid esters and the like. Examples of the antioxidant assistant include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, kephalin, hexametaphosphate, phytic acid, ethylenediaminetetraacetic acid (EDTA) and the like. Can be mentioned.

  Examples of the sequestering agent include sodium ethylenediaminetetraacetate, phosphoric acid, citric acid, ascorbic acid, succinic acid, gluconic acid, sodium polyphosphate, sodium metaphosphate, and the like.

  Examples of the whitening agent include vitamin Cs, arbutin, kojic acid, ellagic acid, and lucinol.

  Examples of the anti-wrinkle agent include retinoid (vitamin A), α-hydroxy acid and the like.

  Examples of the rough skin improving agent include β-glycyrrhetinic acid, glycyrrhizic acid derivatives, anti-inflammatory agents such as allantoin, azulene, and hydrocortisone, protease inhibitors, and the like.

  Examples of acne agents include sebum-suppressing ingredients such as estradiol, estrone, ethinyl estradiol, vitamin B6, keratin exfoliating / dissolving ingredients such as sulfur, salicylic acid, resorcin, benzalkonium chloride, benzethonium chloride, halocarban, 2,4 And bactericidal components such as 4-trichloro-2-hydroxyphenol, and anti-inflammatory components such as glycyrrhizic acid and glycyrrhetinic acid.

  Anti-odor agents include, for example, chlorohydroxyaluminum, aluminum chloride, allantoinchlorohydroxyaluminum, zinc oxide, zinc paraphenolsulfonate, silver-containing zeolite and other antiperspirant ingredients, benzalkonium chloride, isopropylmethylphenol, benzethonium chloride, Examples include bactericidal components such as halocarban and chlorhexidine hydrochloride, deodorizing components such as polyphenolic cachytannins and tea catechins, and antioxidant components such as thiotaurine, hypotaurine and tocopherol.

  Examples of the refreshing agent include menthol and camphor.

  Examples of the astringent include zinc oxide, zinc sulfate, allantoin hydroxyaluminum, aluminum chloride, zinc sulfocolate, tannic acid, citric acid, and lactic acid.

  Antibacterial agents include benzoic acid and salts thereof, salicylic acid and salts thereof, phenol, sorbic acid and salts thereof, dehydroacetic acid and salts thereof, paraben, chlorcresol, hexachlorophene, resorcin, isopropylmethylphenol, orthophenylphenol, chloride Benzalkonium, chlorhexidine hydrochloride, chlorhexidine gluconate, alkylisoquinolinium bromide, trichlorocarbanilide, halocarban, photosensitizer 201, phenoxyethanol, triclosan, methylchloroisothiazolinone / methylisothiazolinone solution, bisabolol, Alkyldiaminoethylglycine hydrochloride, trichloro-salicylanilide, tribromo-salicylanilide, mercury-based compounds, formalin, white ginger, bithionol, boric acid / borax, Chloro, hexachlorophene, and halogenated salicylanilide and the like.

<Dosage form / form>

The dosage form of the cosmetic of the present invention is not particularly limited as long as the shape of the metal sulfate salt particles is maintained in a spherical shape, and can be appropriately selected according to the purpose of use. In order to maintain a spherical shape, it does not have to be dissolved in water. For example, the spherical shape can be maintained by dispersing it in a powder or oily component. From the viewpoint of preventing moisture absorption during storage and maintaining a spherical shape, it is preferable to disperse in an oil component. What is dispersed in a powder or oil component may be made into a dosage form such as powder, solid powder, oil, oil solid, cream, gel, oil-in-water emulsion, water-in-oil emulsion, etc. it can.
The form of the product is not particularly limited, and may be a powder type, a compact type, a stick type, a cream type, an emulsion type, a gel, a wax, a roll-on type, an aerosol type, a non-aerosol type, or the like.

The cosmetic of the present invention can be produced by applying a production method using a normal production apparatus such as a mixer or a press apparatus.
Specifically, a pigment and other powders are stirred and mixed with a mixer, and if necessary, a warmer that has been pre-heated and dissolved is added, and stirred sufficiently until uniform, and if necessary, put into a mold and press-formed. Methods etc. can be applied.

  EXAMPLES The present invention will be specifically described below with reference to examples, but the technical scope of the present invention is not limited to these examples.

[Friction evaluation of aluminum sulfate particles]
First, a method for producing spherical aluminum sulfate salt particles will be described.
Aluminum potassium sulfate (Tiace K20 median diameter 4-6 μm; manufactured by Daimei Chemical Co., Ltd.) was dissolved in water to prepare an 8% by mass aluminum potassium sulfate solution. Next, this solution was spray-dried by a spray-drying apparatus (apparatus name OC16; manufactured by Okawahara Chemical Co., Ltd.) to obtain spherical particles of potassium aluminum sulfate.
The median diameter of the obtained particles was measured using a laser diffraction / scattering method (particle size distribution measuring device HELOS; manufactured by Nippon Laser Co., Ltd.). The measurement results are shown in Table 1. In Examples 1 to 3 in Table 1, the obtained particles were sampled from three locations.
The obtained aluminum potassium sulfate particles are shown in FIG. Further, FIG. 5 shows hollow aluminum potassium sulfate particles.
When FIG. 4 is seen, it turns out that spherical aluminum potassium sulfate particle | grains are obtained. Furthermore, when FIG. 5 is seen, it turns out that spherical and hollow aluminum potassium sulfate particles can also be obtained.

  Next, the average coefficient of friction (MIU) was evaluated about the obtained spherical aluminum potassium sulfate particles using a friction tester (KES-SE; manufactured by Kato Tech Co., Ltd.). As a comparative example, non-spherical aluminum potassium sulfate particles (Tyace K20 FIG. 6) were also evaluated in the same manner.

The evaluation method will be described with reference to FIG.
First, a double-sided tape 210 (Nystack NW-15; manufactured by Nichiban Co., Ltd.) is attached to a slide glass 220 washed with ethanol, and aluminum potassium sulfate particles 240 are coated on the opposite adhesive surface with a coating knife 200. Is applied so as not to appear on the surface, and the measurement kit 300 is manufactured. Thereafter, the measurement kit 300 was set on the friction tester 500 and the average friction coefficient (MIU) was measured by the sensor 250 while being moved by the moving stage 240. Measurement was performed under conditions of a temperature of 24 ° C. and a humidity of 31%. The measurement results are shown in Table 1.

  From the results shown in Table 1, it was found that the spherical aluminum sulfate potassium particles used in the examples had a smaller average friction coefficient than the non-spherical aluminum potassium sulfate particles used in the comparative examples. This means that it is slippery when applied to the skin and allows the particles to fully approach the skin grooves and pores. In addition, since it is slippery when applied, it can provide a smooth feel.

[Prescription example]
Next, the example of the mixing | blending prescription which applied the spherical aluminum sulfate salt particle | grains of this invention to the antiperspirant, body powder, face powder, foundation, and cheek is shown. However, the technical scope of the present invention is not limited by these formulation examples.

(Prescription Example 1)
An antiperspirant (stick type) was prepared according to the following formulation.
Ingredient name Compounding amount (mass%)
Spherical potassium aluminum sulfate particles 15.00
Benzalkonium chloride 0.10
Silver-containing zeolite 5.00
Isopropyl methylphenol 0.10
Cyclopentasiloxane 19.35
Dimethicone 2.00
Stearyl alcohol 25.00
POP-butyl ether-1 20.00
Boron nitride 3.00
Sorbitan sesquiisostearate 2.50
Microcrystalline wax 3.00
Menthol 0.30
Diisostearyl malate 1.00
Glycerin diisostearate 2.50
Butylhydroxytoluene 0.05
Aluminum hydroxide 0.10
Titanium oxide 1.00

(Prescription example 2)
An antiperspirant (stick type) was prepared according to the following formulation.
Ingredient name Compounding amount (mass%)
Spherical aluminum sulfate potassium particles 22.00
Isopropyl palmitate 15.00
Hydrogenated castor oil 3.00
Cyclopentasiloxane 20.00
Polydecene 18.00
PEG-8 distearate 1.50
Stearyl alcohol 17.00
Fragrance 0.50
PPG-14 butyl ether remainder

(Prescription Example 3)
An antiperspirant (aerosol type) was prepared according to the following formulation.
Ingredient name Compounding amount (mass%)
Spherical aluminum sulfate potassium particles 2.50
Stearalkonium bentonite 0.50
Isopropyl palmitate 2.50
Fragrance 0.50
Isobutane 85.00
Cyclopentasiloxane 0.50
Triethyl citrate 1.00
Cyclopentasiloxane balance

(Prescription Example 4)
An antiperspirant (stick type) was prepared according to the following formulation.
Ingredient name Compounding amount (mass%)
Spherical aluminum sulfate potassium particles 16.00
Isopropyl methylphenol 0.10
Cyclopentasiloxane 27.45
Dimethicone 2.00
Stearyl alcohol 20.00
POP-butyl ether-1 20.00
Bismuth oxychloride 2.00
Plate-like alumina 1.00
Sorbitan sesquiisostearate 2.50
Hydrogenated castor oil 2.00
Microcrystalline wax 2.00
Menthol 0.30
Diisostearyl malate 1.00
Glycerin diisostearate 2.50
Butylhydroxytoluene 0.05
Aluminum hydroxide 0.10
Titanium oxide 1.00

(Prescription Example 5)
A face powder was prepared according to the following formulation.
Ingredient name Compounding amount (mass%)
Talc balance Spherical potassium aluminum sulfate particles 22.00
Polyurethane 8.00
Silicic anhydride 0.50
Titanium oxide 1.00
Bengala appropriate amount yellow iron oxide appropriate amount black iron oxide appropriate amount mica titanium 2.00

(Prescription Example 6)
A body powder was prepared according to the following formulation.
Ingredient name Compounding amount (mass%)
Talc remainder Spherical potassium aluminum sulfate particles 15.00
Magnesium stearate appropriate amount perfume appropriate amount

(Prescription Example 7)
A foundation (compact type) was prepared according to the following formulation.
Ingredient name Compounding amount (mass%)
Spherical aluminum sulfate potassium particles 3.00
Talc 43.20
Sericite 22.00
Titanium dioxide 12.00
Silica 5.00
Phenoxyethanol 0.80
Mineral oil 5.00
Dimethyl silicone 5.00
Sorbitan sesquiisostearate 2.00
Yellow iron oxide 1.50
Red iron oxide 0.30
Black iron oxide 0.20

(Prescription Example 8)
Teak was prepared according to the following formulation.
Ingredient name Compounding amount (mass%)
Talc remainder Spherical potassium aluminum sulfate particles 15.0
Sericite 20.0
Magnesium stearate 3.0
Mica titanium 10.0
Colorant appropriate amount Cetyl ethylhexanoate 1.0
Ethylhexyl palmitate 3.0
Dimethicone 3.0

Since the spherical metal sulfate particles of the present invention have a spherical shape, they are slippery when applied to the skin, and the particles can be sufficiently approached to skin grooves and pores.
The metal sulfate metal particles of the present invention can also be used in cosmetics such as antiperspirants, body powders, face powders, foundations, makeup bases, and teaks.

  10 pores, 20 skin grooves, 30 skins, 100 spherical particles, 200 coating knives, 210 double-sided tape, 220 slide glass, 240 aluminum potassium sulfate particles, 240 moving stage, 250 sensor 300 measurement kit, 500 friction tester

Claims (6)

A metal sulfate particle that is a sulfate of a trivalent metal salt,
A metal sulfate particle, characterized in that the shape of the particle is spherical and the median diameter is 200 μm or less.   The metal sulfate salt particles according to claim 1, wherein the metal sulfate metal particles are hollow.   The metal sulfate particle according to claim 1, wherein the metal sulfate salt is a hydrate.   The metal sulfate salt particles according to claim 1, wherein the metal sulfate salt is an anhydride.   Cosmetics containing the metal sulfate salt particles according to any one of claims 1 to 4. The cosmetic according to claim 5, wherein the cosmetic is an antiperspirant, body powder, face powder, foundation, makeup base, or teak.