JP2003095907A - Skin cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skin cosmetic having sufficient deodorizing effect on body odor such as armpit odor or sweat odor and being safe to application to human bodies by including a photocatalyst complex powder obtained by including fine particles having catalytic action into one or more kinds of powder particles. SOLUTION: This skin cosmetic is obtained by including 0.1-30 wt.% (based on total skin cosmetic) photocatalyst complex powder obtained by including fine particles having photocatalyst action into one or more kinds of powder particles. In this case, the fine particles having the photocatalyst action are preferably anatase-type titanium dioxide particles having 0.001-0.3 μm primary particle diameter.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention has a sufficient deodorizing effect for body odor such as armpit odor and sweat odor by containing a photocatalyst composite powder, and even when applied to the human body. Regarding safe skin cosmetics.

[0002]

2. Description of the Related Art Conventionally, as a deodorant compounded in skin cosmetics, for example, a composite powder having a synthetic resin powder as a core and coated with a metal oxide powder (JP-A-1-49327). , Various silica beads containing a metal compound in the particles and having no pores (Japanese Patent Application Laid-Open No. 4-65312) have been proposed, but these do not have sufficient deodorant effect. There's a problem.

On the other hand, examples of using fine particles having a photocatalytic action as a deodorant include, for example, cosmetics containing titanium oxide having a photocatalytic function (JP-A-11-5729), a photocatalyst and a liquefied propellant. Aerosol compositions to be contained (Japanese Patent Laid-Open No. 9-316435) and the like have been proposed, but these are problematic in terms of safety from the viewpoint of the phototoxic effect of titanium oxide.

As described above, at present, a skin cosmetic which has a sufficient deodorizing effect on body odors such as armpit odor and sweat odor and is safe even when applied to the human body has not yet been provided. is there.

[0005]

SUMMARY OF THE INVENTION Under such circumstances, it is an object of the present invention to solve various problems in the prior art and achieve the following objects. That is, the present invention contains a photocatalyst composite powder in which fine particles having a photocatalytic action are included in one kind or two or more kinds of powder particles,
An object of the present invention is to provide a skin cosmetic which has a sufficient deodorizing effect against body odor such as armpit odor and sweat odor and is safe even when applied to the human body.

[0006]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that photocatalysts containing fine particles having a photocatalytic action in one or more powder particles. Skin cosmetics made by compounding composite powder
It has a sufficient deodorizing effect against body odors such as armpit odor and sweat odor, and is safe to apply to the human body. Especially, powder spray type antiperspirant deodorant and roll-on type antiperspirant deodorant ,
Deodorant stick, mist type antiperspirant deodorant, gel type antiperspirant deodorant, foot antiperspirant deodorant, cream type antiperspirant deodorant, foam antiperspirant deodorant, liquid antiperspirant deodorant, It was found that it is suitable for use as a sheet antiperspirant deodorant,
The present invention has been completed.

That is, the present invention provides the following skin cosmetics in order to solve the above problems.

According to the first aspect of the present invention, a photocatalyst composite powder obtained by encapsulating fine particles having a photocatalytic action in one or two or more kinds of powder particles is added to the skin cosmetic as a whole.
A skin cosmetic characterized by containing 30% by mass. The invention according to claim 2 is the skin cosmetic according to claim 1, wherein the fine particles having a photocatalytic action are anatase-type titanium oxide having a primary particle diameter of 0.001 to 0.3 µm. The invention of claim 3 is the skin cosmetic according to claim 1 or 2, further comprising an antiperspirant component.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail below. The skin cosmetic of the present invention contains a photocatalyst composite powder in which fine particles having a photocatalytic action are encapsulated in one or two or more types of powder particles, whereby a photocatalytic action is provided inside the powder particles. Since the fine particles contained therein are incorporated, it has a photocatalytic action but does not have a phototoxic action, and exhibits a deodorizing effect that is safe and durable. In the present invention, inclusion of fine particles having a photocatalytic action in the powder particles broadly means that the particles are contained inside the powder particles, and is also a concept including the case of being supported between layers.

The fine particles having a photocatalytic action include
It is not particularly limited as long as it has a photocatalytic action, but for example, Se, Ge, Si, Ti, Zn, Cu, Al, S
n, Ga, In, P, As, Sb, C, Cd, S, T
e, Ni, Fe, Co, Ag, Mo, Sr, W, Cr,
Examples thereof include oxides of Ba, Pb, etc. Among them, anatase type titanium oxide is preferable because of its high photocatalytic activity.

Here, in the photocatalytic action, electrons and holes are separated on the surface by irradiation with ultraviolet rays, and the holes generate active oxygen having a strong oxidizing action from surrounding water, oxygen and the like. Then, this active oxygen oxidizes and decomposes organic matter and microorganisms.

The primary particle size of the photocatalytic fine particles is in the range of 0.001 to 0.3 μm, and more preferably in the range of 0.003 to 0.2 μm. When the primary particle diameter of the photocatalyst fine particles exceeds 0.3 μm, the function of the photocatalyst may not be exhibited.

The powder particles are not particularly limited as long as the fine particles having the photocatalytic action can be included inside, but layered aluminosilicate or spherical porous silica is preferable.

The aluminosilicate has a chain-like structure, a net-like structure, a layered structure or the like, but a layered structure is preferable because photocatalyst fine particles can be carried between the layers of the layered structure. Specifically, the aluminosilicate is preferably
It is a layered aluminosilicate having a so-called phyllosilicate structure (aluminum-containing phyllosilicate), and more preferably, a composite alumino having a layer having a phyllosilicate structure and an octahedral metal oxide layer laminated thereon. It is a silicate (composite phyllosilicate containing aluminum).

This aluminum-containing composite phyllosilicate is basically composed of a tetrahedral structure layer based on SiO ₄ and an octahedral structure layer based on MO ₆ (M is the same as above; the same applies hereinafter). However, it has a clay mineral type two-layer structure in which oxygen atoms are laminated in a shared manner. The aluminum-containing composite phyllosilicate is usually formed by replacing a part of Si of the tetrahedral structure layer SiO ₆ with Al and replacing a part of Al of the octahedral structure layer MO ₆ with Al. .

When the aluminosilicate has a layered structure, the photocatalyst fine particles can be stably supported between the layers formed by laminating the layered aluminosilicate.

In the aluminosilicate particles containing the photocatalyst fine particles, the aluminosilicate is expressed in mol%, and essentially, SiO ₂ : 5 to 80%, MO _{n / 2} : 5 to 65%.
% (M is the same as above) and Al ₂ O ₃ : 1 to 60%, preferably SiO ₂ : 10 to 70%, M
O _n / 2: 10~60%, and Al ₂ O _3: It is further preferred to have 1 to 50% of the composition. In addition, M is zinc, copper, silver, cobalt, nickel, iron, titanium, as described above.
It is at least one metal selected from barium, tin and zirconium, and among these, zinc is preferable.

Further, the aluminosilicate is obtained as a white or monochromatic powder, and the amount of the water-soluble silicate, the water-soluble metal salt, the water-soluble aluminum salt and / or the water-soluble aluminate corresponding to the above composition ratio is obtained. It is prepared by reacting a salt in the presence of water, and heating the resulting precipitate in the presence of water, if necessary. The average particle size of the powder is 0.3 to 20 μ.
m, preferably 3 to 15 μm. If the particle size of the powder is too small, it is too fine and there is a problem in practical handling when handling the powder. On the other hand, if it is too large,
The feeling of use may deteriorate during application.

The photocatalyst fine particle-containing aluminosilicate composite particles of the present invention can be produced, for example, from a suspension of aluminosilicate and water. Moreover, you may use a surfactant further as needed.

The mixing ratio of the three components in the suspension is preferably water: aluminosilicate = 100: 1 to 1: 3 (more preferably water: aluminosilicate = 100: 1).
~ 1: 1), aluminosilicate: surfactant = 100: 0
˜1: 10 (more preferably aluminosilicate: surfactant = 100: 0 to 1: 3). The pH of the suspension is not particularly limited, but the pH may be adjusted with ammonia water, hydrochloric acid or the like in order to support the suspension efficiently, if necessary.

Photocatalyst fine particles are added while stirring the suspension. The state of the photocatalyst particles to be added may be fine powder or slurry. The amount of the photocatalyst fine particles added is 0.01 to 50% by mass based on the content of the photocatalyst fine particles in the obtained photocatalyst fine particle-containing aluminosilicate particles.
It is preferably 0.1 to 30% by mass. If the content of the photocatalyst fine particles is too small, the original performance of the photocatalyst is not sufficiently exhibited. On the other hand, if it is too large, the performance of the photocatalyst is exhibited, but there is also a photocatalyst not contained in the aluminosilicate,
Problems may occur due to the photocatalyst.

Mixing of the suspension with photocatalyst fine particles in the form of fine powder, slurry or the like is generally carried out under normal temperature and normal pressure conditions, but if necessary, under pressure or under reduced pressure,
Alternatively, it may be carried out under heating or cooling. The mixing time is not particularly limited, but about 30 minutes is sufficient. The photocatalyst fine particle-containing aluminosilicate thus obtained can be separated and collected by a solid-liquid separation operation such as centrifugation or filtration. The recovered photocatalyst fine particle-containing aluminosilicate can be dried as it is to be a product, or can be dried or heat-treated after being washed once or several times with a washing liquid such as water or alcohol. Can also be a product.

As described above, the surfactant may or may not be used when the photocatalyst is contained, but in order to efficiently contain the photocatalyst, the presence of the surfactant is preferable. good. The surfactant that can be used in this case is not particularly limited, such as a cationic surfactant, an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant.
Cationic surfactants are preferable, and cationic surfactants represented by the following general formula (1) are more preferable.

[0024]

[Chemical 1]

However, in the formula, X ⁻ is a halide ion,
R ¹ is a hydroxide ion or an organic acid anion, R ¹ is a linear or branched, saturated or unsaturated aliphatic hydrocarbon group having 8 to 22 carbon atoms, R ² , R ³ and R ⁴ Are each R ¹ , a methyl group, an ethyl group or an organic group represented by the following general formula (2). In addition, R ^{2 to} R ⁴ are
Each group may be the same or different.

[0026]

[Chemical 2]

However, in the formula, m is an integer of 1 to 5, and Y
Is a hydrogen atom or a methyl group.

Specific examples of the surfactant include lauryltrimethylammonium chloride, myristoyltrimethylammonium chloride, palmityltrimethylammonium chloride, stearyltrimethylammonium chloride, oleyltrimethylammonium chloride, erucyltrimethylammonium chloride and polyoxyethylene. Examples thereof include myristoyl ammonium chloride, polyoxyethylene palmityl ammonium chloride, polyoxyethylene oleyl ammonium chloride, polyoxyethylene stearyl ammonium chloride and the like. Two or more kinds of these surfactants may be mixed and used, or may be used as an aqueous solution or an alcohol solution.

As shown in FIG. 1, the spherical porous silica composite powder was prepared by adding TiO _{2 to an} aqueous alkali metal silicate solution.
Add and disperse evenly. Then, this is emulsified in an organic solvent in the presence of an emulsifier to obtain a W / O emulsion (emulsion). Subsequently, the emulsified liquid is mixed with an aqueous solution (reaction liquid) of a compound that exhibits an insoluble silica-forming reaction with respect to an alkali metal silicate, and a spherical porous silica composite powder is formed through a W / O / W emulsion. obtain.

Examples of the alkali metal silicates include the formula M ₂ O.xSiO ₂ (M is at least one element selected from alkali metals such as Na and K, and x is 1 to
Examples include those represented by 4.5). Specifically, N
a ₄ SiO ₄ , Na ₂ Si ₂ O ₅ , Na ₂ Si ₄ O ₉ , K ₂ Si
O ₃ , K ₂ SiO ₄ , K ₂ SiO ₈ · H ₂ O, Li ₂ SiO _{3 and the} like can be used, but it is preferable to use sodium silicate having a SiO ₂ / Na ₂ O molar ratio of 3 or more.

Si in the aqueous solution of the alkali metal silicate
The O ₂ content is 5.0 mol / dm ³ (mol / liter) or more. When it is less than 5.0 mol / dm ³ , the obtained silica particles are likely to be hollow or capsule-like instead of spherical. If the silica particles have a hollow or capsule-like structure, the function of the photocatalyst may not be sufficiently exhibited, or the polymer solid may be deteriorated when it is combined with the polymer solid. In order to reduce the hollowness of the particles, S
The iO ₂ content is preferably 5.5 mol / dm ³ or more. On the other hand, SiO ₂ in 5.0 mol / dm ³ aqueous solution
The upper limit of the content is a value corresponding to the saturated concentration of the alkali metal silicate in the aqueous solution and is not particularly limited.

The concentration of photocatalyst fine particles in the aqueous solution is 0.01 to 50% by mass based on the content of photocatalyst fine particles contained in the produced silica particles (based on dry silica particles). When the concentration of the photocatalyst fine particles is more than 50% by mass, the photocatalyst fine particles are easily aggregated in the alkali metal silicate aqueous solution, and silica particles having a capsule-like structure are easily generated.
Further, spherical silica particles cannot be obtained, and the photocatalyst fine particles are present in a state of not being contained in the silica particles.
On the other hand, if it is less than 0.01% by mass, the effect of the photocatalyst cannot be sufficiently obtained. From the same viewpoint, the concentration of photocatalyst fine particles in the aqueous solution is preferably 1.0 to 30 mass% based on the above criteria.

The photocatalyst fine particles to be added may be aggregates (secondary particles) of primary particles, and such aggregates are dispersed as primary particles by stirring in an alkali metal silicate aqueous solution or ultrasonic treatment. To be done. Therefore, the primary particle size is 0.
The secondary particle diameter is not particularly limited as long as it is in the range of 001 μm to 0.3 μm. In addition, in order to disperse the photocatalyst fine particles in the alkali metal silicate aqueous solution, a general disperser such as a disperser or an ultrasonic homogenizer can be used.

A water-in-oil type (W / O type) is prepared by emulsifying an aqueous solution of an alkali metal silicate containing dispersed photocatalyst fine particles (hereinafter sometimes referred to as "aqueous solution A") in an organic solvent in the presence of an emulsifier. ) Use as an emulsion. In this case, the emulsifier used is preferably dissolved in an organic solvent in advance and used. Examples of the emulsifier include polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan trioleate, polyoxysorbitan monooleate, sorbitan monostearate, sorbitan monooleate, polyoxyethylene nonyl phenyl ether. , Polyoxyethylene hydrogenated castor oil and the like can be used. Also,
As the organic solvent, for example, hexane, cyclohexane, octane, benzene, toluene, xylene, ethylbenzene, chloroform, ethyl acetate or the like can be used.

Two or more kinds of these emulsifiers and organic solvents can be mixed and used. The mixing ratio of the aqueous solution A and the organic solvent is not particularly limited as long as a W / O type emulsion can be obtained, but generally, the volume ratio is preferably 1/9 to 2/1. .

Next, the prepared emulsion is mixed with an aqueous solution of a compound showing an insoluble silica-forming reaction with respect to the alkali metal silicate in the emulsion (hereinafter sometimes referred to as "aqueous solution B"), and the reaction is carried out. Let This reaction operation produces substantially solid (non-hollow) silica particles in which photocatalyst particles are uniformly dispersed in the particles. It is preferable that the emulsion and the aqueous solution B are mixed so that the aqueous solution B is stirred and the emulsion is injected into the stirring liquid. Further, it is particularly preferable to inject the emulsion liquid in the lower part of the stirring liquid.

The mixing ratio of the emulsified liquid and the aqueous solution B is not particularly limited, but it is generally preferable to set the volume ratio in the range of 1/9 to 4/1. The mixed reaction of the emulsion and the aqueous solution is generally carried out at room temperature and normal pressure, but may be carried out under pressure or under reduced pressure, or under heating or cooling, if necessary. A reaction time of about 5 minutes to 1 hour is sufficient. The particle size of the solid silica particles produced can be adjusted by emulsification conditions, stirring conditions and the like.

Examples of the compound exhibiting insoluble silica forming reaction with alkali metal silicates include ammonium salts of inorganic acids such as ammonium sulfate and ammonium chloride, aqueous solutions of inorganic acids such as sulfuric acid and hydrochloric acid, and sodium bisulfite. Is mentioned. These compounds are used in a proportion of 1.0 to 10 mol, preferably 1.5 to 5 mol, per 1 mol of alkali metal silicate.

The obtained solid silica particles containing photocatalyst fine particles can be separated and recovered from the reaction solution by a solid-liquid separation operation such as centrifugation or filtration. Although the recovered silica particles can be dried as they are to obtain a product, they are washed with a washing liquid such as water or alcohol once to several times, and then dried,
A product can also be obtained by performing heat treatment.

By such a production method, the average particle size is in the range of 0.3 to 20 μm and the specific surface area is 10 m.
It is possible to efficiently produce silica particles of ² / g or more, preferably 60 m ² / g or more. The silica particles are porous particles having a large number of pores on the surface thereof. The pore size of the pores is preferably 10 nm or less, and the average pore size is preferably 2 nm to 8 nm.

The photocatalyst composite powder of the present invention produced as described above does not have much titanium oxide on the surface of the powder, as is clear from the results of scanning electron micrographs of Examples described later. (That is, it exists inside the powder), it is almost evenly dispersed in the composite powder, and it has a photocatalytic effect, but it does not have a phototoxic effect, and it has a safe and long-lasting deodorant effect on skin cosmetics. It can be given.

The content of the photocatalyst composite powder is 0.1 to 30% by mass, preferably 1 to 20% by mass based on the total amount of the skin cosmetic. If the blending amount of the photocatalyst composite powder is too large, whitening occurs during application to the skin, while if it is too small, the deodorizing effect cannot be sufficiently exhibited.

In addition to the above-mentioned photocatalyst composite powder, the skin cosmetic of the present invention preferably contains an antiperspirant component in order to exert excellent antiperspirant effect and deodorant effect. Examples of the antiperspirant component include chlorohydroxyaluminum, bromohydroxyaluminum, aluminum chloride,
Aluminum phenol sulfonate, aluminum sulfate, zinc paraphenol sulfonate, zinc sulfate, zinc oxide, aluminum zirconium complex, chlorohydroxyzirconium, chlorohydroxyaluminum zirconium, zinc resinolensane, smectite, tannic acid, etc., and one of these can be used. They can be used alone or in combination of two or more.

The amount of the antiperspirant component is 0.1 to 30% by mass, preferably 2.5, based on the total amount of the skin cosmetics.
Is about 25% by mass.

In the skin cosmetic of the present invention, a compounding agent which is an optional component usually used in skin cosmetics, for example, a surfactant, an oil component, an alcohol, a thickener, an antiseptic / sterilizing agent.
Antibacterial agent, antioxidant, chelating agent, pH adjusting agent, fragrance,
Dyes, vitamins, amino acids, water and the like can be appropriately added depending on the purpose. The optional components are not limited to these.

As the above-mentioned surfactant, a nonionic surfactant, an anionic surfactant, a cationic surfactant, an amphoteric surfactant, etc. can be used, among which no skin disease occurs, or Surfactants listed on the basis of minor cosmetic ingredients are preferred. For example, soybean lecithin, egg yolk lecithin, saponin, oligoglycoside, phospholipid biosurfactant, acyl peptide biosurfactant, polyoxyethylene polyoxypropylene glycol, polyoxyethylene polyoxypropylene cetyl ether, polyoxyethylene polyoxypropylene. Butyl ether, polyoxyethylene coconut oil fatty acid monoethanolamide, polyoxyethylene lauryl ether, polyoxyethylene lauryl ether sulfate triethanolamine, sodium polyoxyethylene lauryl ether sulfate, polyoxyethylene lauryl ether phosphate, polyoxyethylene lauryl ether phosphorus Sodium acid, polyoxyethylene lanolin, polyoxyethylene lanolin alcohol, polyoxypropionate Down-butyl ether, polyvinyl alcohol, polyvinyl pyrrolidone, sodium polyphosphate, sorbitan monooleate, polyethylene glycol monooleate,
Polyoxyethylene sorbitan monooleate, ethylene glycol monostearate, sorbitan monostearate, propylene glycol monostearate, polyethylene glycol monostearate, polyoxyethylene glyceryl monostearate, polyoxyethylene sorbitan monostearate, monopalmitic acid Surfactants such as sorbitan, polyoxyethylene sorbitan monopalmitate, sorbitan monolaurate, polyethylene glycol monolaurate, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitol monolaurate, and coconut oil fatty acid diethanolamide can be mentioned. The seeds may be used alone or in combination of two or more.

Examples of the antiseptic / sterilizing / antibacterial agent include benzalkonium chloride, isopropylmethylphenol, benzoic acid, sodium benzoate, paraoxybenzoic acid ester, distearylmethylammonium chloride,
Benzethonium chloride, Chlorhexidine hydrochloride, Photosensitizer 1
No. 01, Photosensitizer No. 201, salicylic acid, sodium salicylate, sorbic acid, halocarban, resorcin, parachlorophenol, phenoxyethanol, bisabolol, hinokitiol, menthol, chitosan, chitosan degradation products, eucalyptus extract, kujin extract, neem leaf extract, loquat extract, Yucca extract, aloe extract, cinnamon bark extract, zedoary extract and the like can be mentioned, and one of these can be used alone or in combination of two or more.

Examples of the oils and fats include soybean oil, linseed oil, sesame oil, bran oil, cottonseed oil, rapeseed oil, safflower oil, corn oil, olive oil, camellia oil, almond oil, castor oil, peanut oil, cocoa oil. , Palm kernel oil,
Beef tallow, mink oil, jojoba oil, evening primrose oil, horse oil, etc. are mentioned, and these 1 type can be used individually or in combination of 2 or more types.

Examples of the waxes include carnauba wax, candelilla wax, beeswax, honey beeswax, spermaceti, cerax, lanolins, and the like, and one kind thereof may be used alone or in combination of two or more kinds. Can be used.

Examples of the above-mentioned hydrocarbons include liquid paraffin, petrolatum, microlistalin wax,
Ceresin, squalane, polyethylene powder and the like can be mentioned, and one of these can be used alone or in combination of two or more.

Examples of the fatty acids include stearic acid, linoleic acid, lauric acid, myristic acid, palmitic acid, hevenic acid, lanolinic acid, oleic acid, undecylenic acid, isostearic acid, and the like. They can be used alone or in combination of two or more.

Examples of the alcohols include lauryl alcohol, cetyl alcohol, stearyl alcohol, lanolin alcohol, hydrogenated lanolin alcohol,
Oleyl alcohol, hexadecyl alcohol, 2-octyldodecanol, glycerin, sorbitol, propylene glycol, 1,3-butylene glycol, ethylene glycol or a polymer thereof, glucose, sucrose, cholesterol, phytosterol, cetostearyl alcohol and the like, These 1 type can be used individually or in combination of 2 or more types.

Examples of the esters include decyl oleate, butyl stearate, myristyl myristate, hexyl laurate, isopropyl palmitate, isopropyl myristate, octyldodecyl myristate, hexyldecyl dimethyloctanoate, and propylene glycol dioleate. , Diethyl phthalate, glyceryl monostearate, glyceryl trimyristate, cetyl lactate and the like, and one of these may be used alone or two or more thereof may be used in combination.

The fragrance is not particularly limited, and examples thereof include fragrances A to E described in Japanese Patent Application No. 2001-262009.
The components can be appropriately selected and used.

The skin cosmetic of the present invention thus constructed can be prepared according to a usual method, and the dosage form can be any of cream, emulsion, beauty essence, sheet-like cosmetic impregnated with a non-woven fabric and the like. Among them, powder spray type antiperspirant deodorant, roll-on type antiperspirant deodorant, deodorant stick, mist type antiperspirant deodorant, gel type antiperspirant deodorant, for feet It is suitable as an antiperspirant deodorant, a cream type antiperspirant deodorant, a foamy antiperspirant deodorant, a liquid antiperspirant deodorant, a sheet antiperspirant deodorant and the like.

[0056]

EXAMPLES The present invention will be specifically described below by showing Examples and Comparative Examples, but the present invention is not limited to the following Examples. In addition, in this example, "mass%" or "%" which shows a compounding quantity means mass% with respect to the total amount of the composition unless otherwise specified.

By the following method for producing a photocatalyst composite powder,
Photocatalyst composite powders 1 to 8 shown in Table 1 were manufactured.

<Production Method of Photocatalyst Composite Powders 1 to 4> Water, aluminosilicate and a surfactant were added to prepare suspensions. Anatase type titanium oxide shown in Table 1 was added to this suspension and stirred for 30 minutes. Next, the produced particles were separated, washed with water, and dried at a temperature of 105 ° C. to produce photocatalyst composite powders 1 to 4.

<Manufacturing Method of Photocatalyst Composite Powders 5 to 8> As shown in FIG. 1, the anatase type titanium oxide shown in Table 1 was added to an alkali metal silicate aqueous solution and uniformly dispersed. This was emulsified in an organic solvent in the presence of an emulsifier to obtain a W / O emulsion (emulsion). Subsequently, the emulsified liquid is mixed with an aqueous solution (reaction liquid) of a compound showing an insoluble silica forming reaction with respect to an alkali metal silicate, and W /
Photocatalyst composite powders 5 to 8 were produced through the O / W emulsion.

Scanning electron micrographs of the obtained photocatalyst composite powder 6 are shown in FIGS. FIG. 2 is an overall photograph of the powder, FIG. 3 is a photograph showing the presence of titanium, FIG. 4 is a photograph showing the presence of Si, and FIG. 5 is a photograph showing the presence of O. From the results of these photographs, titanium oxide is shown. It is observed that the rare earth does not exist on the surface of the powder (that is, exists inside the powder) and is dispersed almost uniformly in the composite powder.

[0061]

[Table 1]

Next, the following skin cosmetics were prepared using the photocatalyst composite particles 1 to 8 and the deodorizing effect was evaluated by the following method. The results are also shown in Tables 2 to 23.

<Deodorizing effect> When there are 15 or more panelists of 10 males and females who use the compositions of Examples and Comparative Examples and feel that they are effective in deodorizing body odor. The deodorizing power of the composition was designated as ○. If less than 15 people felt that 5 or more people were effective, it was evaluated as Δ, and if less than 5 people was evaluated as x.

[Examples 1 to 10 and Comparative Example 1] Powder
-Spray type antiperspirant deodorant

[Table 2] * 1: Sunsphere H-121 (manufactured by Dokai Kagaku) * 2: KSP-101 (manufactured by Shin-Etsu Chemical Co., Ltd.) * 3: Falco Rex Eucalyptus E (manufactured by Ichimaru Falcos) * 4: TSF405 (viscosity 4 mm ² / s, Toshiba silicone) * 5: KF96-10cs (viscosity 10 mm ² / s, Shin-Etsu Chemical Co., Ltd.) * 6: perfume, a A~E shown in the table of Japanese Patent Application No. 2001-262009 can be appropriately used by odor notes.

[0065]

[Table 3] * 1: Sunsphere H-121 (manufactured by Dokai Kagaku) * 2: KSP-101 (manufactured by Shin-Etsu Chemical Co., Ltd.) * 3: Falco Rex Eucalyptus E (manufactured by Ichimaru Falcos) * 4: TSF405 (viscosity 4 mm ² / s, Toshiba silicone) * 5: KF96-10cs (viscosity 10 mm ² / s, Shin-Etsu Chemical Co., Ltd.) * 6: perfume, a A~E shown in the table of Japanese Patent Application No. 2001-262009 can be appropriately used by odor notes.

[0066] Example 11 to 20 and Comparative Example 2 Low
Luon type antiperspirant deodorant

[Table 4] * 1: HPC-H (manufactured by Nippon Soda) * 2: Falco Rex Eucalyptus E (manufactured by Ichimaru Falcos) * 3: As the fragrance, A to E shown in the table of Japanese Patent Application No. 2001-262009 can be appropriately used depending on the scent. it can.

[0067]

[Table 5] * 1: HPC-H (manufactured by Nippon Soda) * 2: Falco Rex Eucalyptus E (manufactured by Ichimaru Falcos) * 3: As the fragrance, A to E shown in the table of Japanese Patent Application No. 2001-262009 can be appropriately used depending on the scent. it can.

[Examples 21 to 30 and Comparative Example 3] Deo
Drant stick

[Table 6] * 1: TSF405 (manufactured by Toshiba Silicone) * 2: As the fragrance, AE shown in the table of Japanese Patent Application No. 2001-262009 can be appropriately used depending on the scent.

[0069]

[Table 7] * 1: TSF405 (manufactured by Toshiba Silicone) * 2: As the fragrance, AE shown in the table of Japanese Patent Application No. 2001-262009 can be appropriately used depending on the scent.

[Examples 31 to 40 and Comparative Example 4] Miss
Totype antiperspirant deodorant

[Table 8] * 1: TSF405 (manufactured by Toshiba Silicone) * 2: Organsol 2002 (manufactured by Elfatchem) * 3: As the fragrance, A to E shown in the table of Japanese Patent Application No. 2001-262009 can be appropriately used depending on the scent.

[0071]

[Table 9] * 1: TSF405 (manufactured by Toshiba Silicone) * 2: Organsol 2002 (manufactured by Elfatchem) * 3: As the fragrance, A to E shown in the table of Japanese Patent Application No. 2001-262009 can be appropriately used depending on the scent.

[0072] Example 41 to 50 and Comparative Example 5] Jefferies
Rutype antiperspirant deodorant

[Table 10] * 1: Tospearl 2000B (manufactured by GE Toshiba Silicone) * 2: KM-9729 (manufactured by Shin-Etsu Chemical Co., Ltd.) * 3: Birch (C) (manufactured by Ichimaru Falcos) * 4: Falco Rex Eucalyptus E (manufactured by Ichimaru Falcos) * 5: HPC-H (manufactured by Nippon Soda) * 6: HEC-600 (manufactured by Daicel Chemical Industries) * 7: As the fragrance, AE shown in the table of Japanese Patent Application No. 2001-262009 can be appropriately used depending on the scent.

[0073]

[Table 11] * 1: Tospearl 2000B (manufactured by GE Toshiba Silicone) * 2: KM-9729 (manufactured by Shin-Etsu Chemical Co., Ltd.) * 3: Birch (C) (manufactured by Ichimaru Falcos) * 4: Falco Rex Eucalyptus E (manufactured by Ichimaru Falcos) * 5: Carbopol 940 (manufactured by BF Goodrich) * 6: HEC-600 (manufactured by Daicel Chemical Industries) * 7: As the fragrance, A to E shown in the table of Japanese Patent Application No. 2001-262009 can be appropriately used depending on the scent tone.

[Examples 51 to 60 and Comparative Example 6] For feet
Antiperspirant deodorant

[Table 12] * 1: Birch (C) (manufactured by Ichimaru Falcos) * 2: Falco Rex Eucalyptus E (manufactured by Ichimaru Falcos) * 3: As the fragrance, use A to E shown in the table of Japanese Patent Application No. 2001-262009 depending on the scent. You can

[0075]

[Table 13] * 1: Birch (C) (manufactured by Ichimaru Falcos) * 2: Falco Rex Eucalyptus E (manufactured by Ichimaru Falcos) * 3: As the fragrance, use A to E shown in the table of Japanese Patent Application No. 2001-262009 depending on the scent. You can

[Examples 61 to 73 and Comparative Examples 7 to 9]
Cream type antiperspirant deodorant

[Table 14] * 1: Falco Rex Eucalyptus E (manufactured by Ichimaru Falcos) * 2: As the fragrance, AE shown in the table of Japanese Patent Application No. 2001-262009 can be appropriately used depending on the scent.

[0077]

[Table 15] * 1: Falco Rex Eucalyptus E (manufactured by Ichimaru Falcos) * 2: Birch (C) (manufactured by Ichimaru Falcos) * 3: As the fragrance, use A to E shown in the table of Japanese Patent Application No. 2001-262009 depending on the fragrance tone. You can

[0078]

[Table 16] * 1: Falco Rex Eucalyptus E (manufactured by Ichimaru Falcos) * 2: As the fragrance, AE shown in the table of Japanese Patent Application No. 2001-262009 can be appropriately used depending on the scent.

[Examples 74 to 77 and Comparative Example 10] Bubbles
Antiperspirant deodorant

[Table 17] * 1: KF96-10cs (viscosity 10 mm ² / s, Shin-Etsu Chemical Co., Ltd.) * 2: perfume, a A~E shown in the table of Japanese Patent Application No. 2001-262009 can be appropriately used by odor notes.

[Examples 78 to 83] Powdered antiperspirant / deodorant

[Table 18] * 1: Sunsphere H-121 (manufactured by Dokai Kagaku) * 2: As the fragrance, AE shown in the table of Japanese Patent Application No. 2001-262009 can be appropriately used depending on the scent.

[Examples 84 to 88 and Comparative Example 11] Liquid
Antiperspirant deodorant

[Table 19] * 1: HEC-600 (manufactured by Daicel Chemical Industries) * 2: Falco Rex Eucal E (manufactured by Ichimaru Falcos) * 3: As a fragrance, use A to E shown in the table of Japanese Patent Application No. 2001-262009 depending on the scent. You can

[Examples 89 to 108 and Comparative Examples 12 to 1]
5] Sheet-shaped antiperspirant deodorant

[Table 20] * 1: SH200C 30cs (manufactured by Toray Dow Corning Silicone Co., Ltd.) * 2: Falco Rex Eucal E (manufactured by Ichimaru Falcos) * 3: HPC-L (manufactured by Nippon Soda Co., Ltd.) * 4: Monat gum DA (Dainippon Pharmaceutical Co., Ltd.) )) * 5: Hibiswako 105 (manufactured by Wako Pure Chemical Industries, Ltd.) * 6: As the fragrance, AE shown in the table of Japanese Patent Application No. 2001-262009 can be appropriately used depending on the scent. [Sheet type] A: Rayon fiber (1.7 dtex × 40 mm) 100
% Spunlace Nonwoven B: Cotton Fiber (1.7 dtex × 24 mm) 100
% Spunlace non-woven fabric C: polypropylene point embossed non-woven fabric (40 g /
m ² ) on both sides of rayon fiber (1.7 dtex × 40
mm) 70%, polyester fiber (1.6 dtex x 4)
4 mm) 15%, polypropylene / polyethylene composite fiber (2.2 dtex × 51 mm) 15% mixture (15 each)
g / m ² ) and spun lace nonwoven fabric integrated by water flow. D: Polyester spunbond nonwoven fabric (30 g / m ² ).
Rayon fiber (1.7 dtex x 40 mm) on both sides of
Spunlace nonwoven fabric in which 100% (15 g / m ^{2 for} each) is arranged and integrated by water flow. E: Rayon fiber (1.7 dtex × 40 mm) 40%
And polyester / polyethylene splittable conjugate fiber (2.2
dtex, 0.28 dtex × 51mm after division) 60%
Spunlace nonwoven fabric made of a mixture of.

[0083]

[Table 21]

* 1: Pemulen TR-2 manufactured by BFGoodrich * 2: Falco Rex Eucal E (manufactured by Ichimaru Falcos) * 3: As the fragrance, A to E shown in the table of Japanese Patent Application No. 2001-262009 are appropriately used depending on the fragrance tone. be able to. [Sheet type] A: Rayon fiber (1.7 dtex × 40 mm) 100
% Spunlace Nonwoven B: Cotton Fiber (1.7 dtex × 24 mm) 100
% Spunlace non-woven fabric C: polypropylene point embossed non-woven fabric (40 g /
m ² ) on both sides of rayon fiber (1.7 dtex × 40
mm) 70%, polyester fiber (1.6 dtex x 4)
4 mm) 15%, polypropylene / polyethylene composite fiber (2.2 dtex × 51 mm) 15% mixture (15 each)
g / m ² ) and spun lace nonwoven fabric integrated by water flow. D: Polyester spunbond nonwoven fabric (30 g / m ² ).
Rayon fiber (1.7 dtex x 40 mm) on both sides of
Spunlace nonwoven fabric in which 100% (15 g / m ^{2 for} each) is arranged and integrated by water flow. E: Rayon fiber (1.7 dtex × 40 mm) 40%
And polyester / polyethylene splittable conjugate fiber (2.2
dtex, 0.28 dtex × 51mm after division) 60%
Spunlace nonwoven fabric made of a mixture of.

[0085]

[Table 22]

* 1: Average particle size 5 μm, manufactured by Miyoshi Kasei * 2: 0.5 μm, manufactured by Kunimine Industries * 3: Falco Rex Eucal E (manufactured by Ichimaru Falcos) * 4: Perfume listed in Japanese Patent Application No. 2001-262009. It is possible to appropriately use A to E shown in Table 1 depending on the scent. [Sheet type] A: Rayon fiber (1.7 dtex × 40 mm) 100
% Spunlace Nonwoven B: Cotton Fiber (1.7 dtex × 24 mm) 100
% Spunlace non-woven fabric C: polypropylene point embossed non-woven fabric (40 g /
m ² ) on both sides of rayon fiber (1.7 dtex × 40
mm) 70%, polyester fiber (1.6 dtex x 4)
4 mm) 15%, polypropylene / polyethylene composite fiber (2.2 dtex × 51 mm) 15% mixture (15 each)
g / m ² ) and spun lace nonwoven fabric integrated by water flow. D: Polyester spunbond nonwoven fabric (30 g / m ² ).
Rayon fiber (1.7 dtex x 40 mm) on both sides of
Spunlace nonwoven fabric in which 100% (15 g / m ^{2 for} each) is arranged and integrated by water flow. E: Rayon fiber (1.7 dtex × 40 mm) 40%
And polyester / polyethylene splittable conjugate fiber (2.2
dtex, 0.28 dtex × 51mm after division) 60%
Spunlace nonwoven fabric made of a mixture of.

[0087]

[Table 23]

* 1: KF96-10cs (viscosity 10mm
² / s, manufactured by Shin-Etsu Chemical Co., Ltd. * 2: Average particle size 5 μm, manufactured by Miyoshi Kasei * 3: 0.5 μm, manufactured by Kunimine Co., Ltd. * 4: Falco Rex Eucal E (manufactured by Ichimaru Falcos) * 5: Special request for fragrance A to E shown in the table of 2001-262009 can be appropriately used depending on the scent. [Sheet type] A: Rayon fiber (1.7 dtex × 40 mm) 100
% Spunlace Nonwoven B: Cotton Fiber (1.7 dtex × 24 mm) 100
% Spunlace non-woven fabric C: polypropylene point embossed non-woven fabric (40 g /
m ² ) on both sides of rayon fiber (1.7 dtex × 40
mm) 70%, polyester fiber (1.6 dtex x 4)
4 mm) 15%, polypropylene / polyethylene composite fiber (2.2 dtex × 51 mm) 15% mixture (15 each)
g / m ² ) and spun lace nonwoven fabric integrated by water flow. D: Polyester spunbond nonwoven fabric (30 g / m ² ).
Rayon fiber (1.7 dtex x 40 mm) on both sides of
Spunlace nonwoven fabric in which 100% (15 g / m ^{2 for} each) is arranged and integrated by water flow. E: Rayon fiber (1.7 dtex × 40 mm) 40%
And polyester / polyethylene splittable conjugate fiber (2.2
dtex, 0.28 dtex × 51mm after division) 60%
Spunlace nonwoven fabric made of a mixture of.

[0089]

EFFECTS OF THE INVENTION According to the present invention, by containing a photocatalyst composite powder in which fine particles having a photocatalytic action are included in one kind or two or more kinds of powder particles, armpit odor, sweat odor, etc. A skin cosmetic having a sufficient deodorizing effect on the body odor and being applied to the human body is safe.

[Brief description of drawings]

FIG. 1 is a production flow of a photocatalyst composite powder of the present invention.

FIG. 2 is a scanning electron micrograph showing the entire surface of the photocatalyst composite powder 6 of the present invention.

FIG. 3 is a scanning electron micrograph showing the presence of Ti on the surface of the photocatalyst composite powder 6 of the present invention.

FIG. 4 is a scanning electron micrograph showing the presence of Si on the surface of the photocatalyst composite powder 6 of the present invention.

FIG. 5 is a scanning electron micrograph showing the presence of O on the surface of the photocatalyst composite powder 6 of the present invention.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masatsugu Miyazaki             1-3-7 Honjo, Sumida-ku, Tokyo Rio             Within the corporation (72) Inventor Yuichi Nishida             1-3-7 Honjo, Sumida-ku, Tokyo Rio             Within the corporation F-term (reference) 4C083 AA112 AA122 AB172 AB222                       AB232 AB241 AB242 AB432                       AB442 AC012 AC022 AC072                       AC102 AC122 AC172 AC302                       AC352 AC422 AC432 AC472                       AC532 AC542 AC582 AC792                       AC812 AD042 AD072 AD162                       AD172 AD282 AD352 AD532                       AD552 AD662 BB25 CC17                       DD11 DD17 DD23 DD41 EE18

Claims (3)

[Claims] 1. A photocatalyst-composite powder containing fine particles having a photocatalytic action in one kind or two or more kinds of powder particles, in an amount of 0.1 to 30% by mass based on the whole skin cosmetic. Skin cosmetics characterized by: 2. The skin cosmetic according to claim 1, wherein the photocatalytic fine particles are anatase-type titanium oxide having a primary particle diameter of 0.001 to 0.3 μm. 3. The skin cosmetic according to claim 1, further comprising an antiperspirant component.