JP2001187721A - Deodorant cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deodorant cosmetic having sufficient deodorizing effect on body odor such as armpit odor and sweat odor and presenting favorable dry feel when applied to the human body. SOLUTION: This deodorant cosmetic contains as active ingredient magnesium oxide powder 50-100 mass % in magnesium oxide content, 120-300 m2/g in specific surface area and 0.8-1.5 mL/g in pore volume.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorant cosmetic, and more particularly to a deodorant cosmetic which can be suitably used for deodorizing and deodorizing a human body such as a side odor and a sweat odor, and has an excellent deodorant effect.

[0002]

2. Description of the Related Art Body odors such as side odors, sweat odors and foot odors cause discomfort not only to the person himself / herself but also to those around him, so that a person with body odor has a great psychological and mental burden. It has become. The mechanism of body odor and other body odors has not been fully elucidated at present, but is generally considered to be caused by bacterial decomposition of sweat and sebum. Perfumer & Flavar
ist, 1.12-17 (1979) J. Am. Soc. Ch
em. , 34, 193-202 (1982)}. In this case, as the offensive odor, attention was paid to 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 aging odor. Nonenal and the like are included. Various products have been proposed to deodorize these odors, but these products are generally classified into the following four types. (1) An antiperspirant which uses an astringent aluminum compound to suppress perspiration by its astringent action. (2) A disinfectant that uses a disinfectant to prevent the growth of bacteria and prevent the decomposition of sweat and sebum. (3) By using metal oxides, plant extracts, etc.,
Deodorant that eliminates generated odor. (4) A masking agent that masks odor using a fragrance.

As the antiperspirant (1), chlorohydroxyaluminum is most commonly used. As the bactericide (2), triclosan, hexachlorophene, various quaternary ammonium compounds and the like are often used. As the deodorant (3), for example, metal oxides such as zinc oxide and magnesium oxide (Japanese Patent Application Laid-Open No.
JP-A-217169), alkali metal bicarbonates, silicate carbonates of alkaline earth metals, plant extracts and the like are used. As the masking agent (4), an aromatic substance having a pleasant odor such as eugenol is used.

However, the aforementioned conventional antiperspirants, bactericides,
Deodorants, masking agents and the like have not been sufficiently satisfactory in terms of deodorization and deodorization against body odor. Further, those which mainly rely on adsorption, such as porous silica powder, do not selectively act only on offensive odor among odors. Furthermore, conventional deodorizing components can deodorize generated odorous substances, but could hardly be expected to reduce or detoxify causative substances before the generation of odors. On the other hand, magnesium oxide has an excellent deodorizing effect in that it directly neutralizes lower fatty acids, the main substance of sweat odor, but when applied to the human body, it gives a heavy touch to the skin, so it is used as an antiperspirant, etc. The required "smoothness" is critically lacking. Moreover, the conventional magnesium-containing compounds are limited to those that neutralize lower fatty acids, and cannot sufficiently respond to body odors such as ammonia odor, esters, and ketones.

[0005]

An object of the present invention is to have a sufficient deodorizing and deodorizing effect on body odors such as side odors and sweat odors,
Another object of the present invention is to provide a deodorant cosmetic that exhibits a suitable smooth feeling when applied to the human body.

[0006]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies in view of the above-mentioned circumstances, and as a result, by using magnesium oxide powder having a specific specific surface area and a specific pore volume,
The present inventors have found that a deodorant cosmetic having a smooth feeling of use can be obtained while having excellent deodorant and deodorant effects, and have completed the present invention.

That is, the present invention resides in the following (1) and (2). (1) a magnesium oxide content of 50 to 100% by mass;
A deodorant cosmetic containing a magnesium oxide powder having a specific surface area of 120 to 300 m ² / g and a pore volume of 0.8 to 1.5 ml / g as an active ingredient. (2) The deodorant cosmetic according to the above (1), further comprising an aluminosilicate in the magnesium oxide powder.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The magnesium oxide powder as an active ingredient of the deodorant cosmetic of the present invention has a magnesium oxide content of 50 to 100% by mass (hereinafter simply referred to as "%"). The specific surface area of the body is 120-300m
² / g, and the powder has a pore volume of 0.8 to 1.5.
ml / g are used. The magnesium oxide powder is mainly a crystal of magnesium oxide, and has a fine structure, a low crystallinity, and a porous structure having a large internal surface area.

If the amount of magnesium oxide contained in the magnesium oxide powder is less than 50%, the deodorizing ability for lower fatty acids and the like is undesirably reduced. Also,
When the specific surface area of the magnesium oxide powder is less than 120 m ² / g or the pore volume is less than 0.8 ml / g, the deodorizing ability with respect to lower fatty acids and the like is reduced, and the persistence of the deodorizing ability is poor. Absent. Conversely, the specific surface area is 3
Greater than 00 m ² / g or 1.5 ml pore volume
/ G is not preferred because the smooth feeling is reduced and the feeling of use is inferior. Here, the specific surface area and the pore volume can be measured by, for example, the N ₂ method (low temperature gas adsorption method of BET using nitrogen as an adsorbing gas). As a measuring device, for example, a Shimadzu specific surface area automatic analyzer 2200 ( Available from Shimadzu Corporation. Further, the particle diameter of the magnesium oxide powder is preferably in the range of 5 to 50 μm. If it is less than 5 μm, the problem of oral suction due to scattering may occur, and
If it exceeds 0 μm, the smooth feeling may be reduced and the feeling of use may be inferior.

The magnesium oxide powder having the above properties comprises a magnesium compound and an aluminum compound,
It can be manufactured by firing at a temperature of about 450 to 550 ° C. As the magnesium oxide powder, a commercially available product can be advantageously used. As a commercially available product that can be suitably used, for example, M-511 (manufactured by Kunimine Industries Co., Ltd .; magnesium oxide content of 96% or more, specific surface area of 120 to ²⁰⁰ m ² / g, pore volume of 0.87 to 1.18)
ml / g) and the like.

The amount of the magnesium oxide powder in the cosmetic of the present invention is preferably about 1 to 50%, more preferably 5 to 40%, based on the whole cosmetic. If the blending amount of the magnesium oxide powder is less than 1%, the deodorizing ability may not be sufficiently exhibited, and if it exceeds 50%, it may not be preferable from the viewpoint of usability.

The magnesium oxide powder used in the present invention is:
An aluminosilicate can be contained as a component thereof. A magnesium oxide powder containing this aluminosilicate and satisfying the above conditions (the content of magnesium oxide is 50% or more, the specific surface area is 120 to 300 m ² / g, and the pore volume is 0.8 to 1.5 ml / g. ) Is preferable because the deodorizing power against the odor secondary to the microbial decomposition of sebum can be improved. Examples of aluminosilicates include those belonging to a 2: 1 layered silicate having a negatively charged layer that is neutralized by cations in the intermediate layer; An octahedral type and a tri-octahedral type are distinguished. The di-octahedral type includes montmorillonite, beidellite, nontronite, etc., including the special case of bentonite, and the tri-octahedral type includes hectorite, saponite, sauconite, stevensite, etc., but is preferred. Specific examples of aluminosilicates include montmorillonite, beidellite, nontronite, hectorite, saponite, sauconite, stevensite,
Examples include smectite and bentonite, and Ca-type and Mg-type are particularly preferable. These may be a mixture of two or more. Further, the aluminosilicate described above preferably has a cation exchange capacity of 10 to 300 (meq / 100 mg). Cation exchange capacity is 10 (meq /
If the amount is less than 100 mg), 2
There is a case where the deodorizing ability for the next odor is inferior, and the use of more than 300 (meq / 100 mg) does not make much sense because the effect reaches a steady state. The aluminosilicate in the magnesium oxide powder preferably contains about 2% to 50% of the powder amount. When the content is less than 2%, it is difficult to control the complex effect (deodorizing effect and smooth feeling), and the intended purpose may not be sufficiently achieved. If the amount is large, the deodorizing effect may be weak.

As the magnesium oxide powder containing the aluminosilicate, commercially available products can be advantageously used. As a commercially available product that can be suitably used, for example, Shin-M-511 (manufactured by Kunimine Industries Co., Ltd .; magnesium oxide content 80%, specific surface area 150 to 250 m ² / g, pore volume 0.8 to 1.4 ml / g) And the like.

[0014] The deodorant cosmetic of the present invention, by adding a bactericide as an optional component, produces a secondary body odor generated by the decomposition of sweat and sebum components by bacteria resident on the skin and enzymes released from them. It is preferable because it can be suppressed. Specific examples of fungicides include antiperspirants such as aluminum hydroxychloride, aluminum chloride, aluminum sulfate, basic aluminum bromide, aluminum phenolsulfonic acid, zinc parasulfonic acid, and basic aluminum iodide; Trichlorocarbanilide (TC
C), benzalkonium chloride, benzethonium chloride, alkyltrimethylammonium chloride, resorcinol, phenol, sorbic acid, salicylic acid, hexachlorophene and the like.

In the deodorant cosmetic composition of the present invention, it is preferable to add a masking agent such as a fragrance to a body odor component which cannot be completely deodorized with only a deodorant or a bactericide. Specifically, for example, a masking agent such as jasper, skatole, lemon oil, lavender oil, absolute, jasmine, vanillin, benzoin, benzyl acetate, menthol, and the like can be blended by an ordinary method.

Further, other optional components other than the above include, for example, avocado oil, almond oil, olive oil, grape seed oil, sesame oil, sasanqua oil, safflower oil,
Soybean oil, camellia oil, corn oil, rapeseed oil, persic oil, castor oil, sunflower oil, cottonseed oil, peanut oil, cocoa oil, palm oil, coconut oil, tallow, fish oil, hardened oil, turtle oil, pork oil, mink oil And oils such as egg yolk oil;
Waxes such as shellac, beeswax, lanolin, carnauba wax, candelilla wax; hydrocarbons such as liquid paraffin, liquid polyisobutylene, squalane, bristan, vaseline, paraffin, ceresin; succinic acid, tartaric acid,
Organic acids such as citric acid; fatty acids such as undecylenic acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, linoleic acid, ricinoleic acid, and behenic acid; ethanol, isopropanol, lauryl alcohol, cetanol, Alcohols such as hexyldecanol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, and lanolin alcohol; ethylene glycol, diethylene glycol monoethyl ether, triethylene glycol, polyethylene glycol, propylene glycol, 1,3-butylene glycol, glycerin, and patyl alcohol Polyhydric alcohols; sugars such as glucose, sucrose, lactose, xylitol, sorbitol, mannitol and maltitol; diadipate Esters such as isopropyl, cetyl isostearate, oleyl oleate, decyl oleate, lanolin acetate, butyl stearate, isopropyl myristate, diethyl phthalate, hexyl laurate; aluminum stearate, magnesium stearate, zinc stearate, etc. Metallic soap; gum arabic, sodium alginate, casein, carrageenan,
Natural water-soluble polymer compounds such as karaya gum, agar, quince seed, gelatin, dextrin, starch, tragacanth, and pectin; semi-synthetic polymer compounds such as propylene glycol alginate, ethyl cellulose, crystalline cellulose, and methyl cellulose; carboxyvinyl polymer, polyvinyl methyl Synthetic polymer compounds such as ether and methoxyethylene maleic anhydride copolymer; silicone oils such as methylphenylpolysiloxane, dimethylpolysiloxane, decamethylpentasiloxane, and methylhydrogenpolysiloxane; sorbitan trioleate, polyoxyethylene monooleate Eate, polyoxyethylene nonyl phenyl ether, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ether phosphoric acid, polyoxyethylene alkyl Nonionic surfactants such as luglyceryl and polyoxyethylene alkyl hydrogenated castor oil; anionic surfactants such as dialkyl sulfosuccinates, alkyl allyl sulfonates, higher alcohol sulfates and phosphates; Preservatives such as ethyl benzoate and methyl paraoxybenzoate; vitamins such as vitamin A, vitamin D, vitamin E, vitamin K; hormones such as estradiol, ethyl estradiol, cortisone; red No. 2, blue No. 1, red 20
Organic dyes such as No. 2, Yellow 201, Green 204, Purple 201, etc .; Inorganic dyes such as aluminum powder, talc, kaolin, mica, titanium, red iron, calamine, etc .; Anti-inflammatory agents such as aloe powder and guayrene; Freon 11,
Freon 12, Freon 21, Freon 22, Freon 113,
Freon 114, Freon C318, dimethyl ether, liquefied petroleum gas, methyl chloride, methylene chloride,
Propellants such as isobutane, isopentane, carbon dioxide, nitrogen gas and the like; purified water and the like.

The deodorant cosmetic of the present invention can be made into a deodorant type product such as aerosol, roll-on, powder, cream, stick, sheet, lotion, bath additive, hair blow, hair spray and the like.
The preparation of the cosmetic of the present invention is carried out by mixing essential components and optional components according to a conventional method according to the dosage form.

[0018]

EXAMPLES Next, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited thereto. Examples 1 to 5 and Comparative Examples 1 to 5 The following magnesium oxide powder and talc powder having an average particle size of about 10 μm were uniformly mixed as shown in Table 1 to obtain a powder type deodorant cosmetic (the present invention). Inventive product and Comparative product) were prepared, and the dry feeling and deodorizing effect of each cosmetic were evaluated by the methods described below. Table 1 also shows the results.

<Powder used><Ingredients> Example 1: content of magnesium oxide 98%, specific surface area 220 m ² / g, pore volume 1.0 ml / g (average particle diameter 15 μm) Example 2: content of magnesium oxide 90%, specific surface area 280 m ² / g, pore volume 1.2 ml / g (average particle diameter 18 μm) Example 3: magnesium oxide content 60%, specific surface area 300 m ² / g, pore volume 1.5 ml / g ( Example 4: Magnesium oxide content 80%, Ca-type montmorillonite content, specific surface area 300 m ² / g, pore volume 1.2 ml / g (average particle size 100 μm), cation exchange capacity 300 (meq / Example 5: Magnesium oxide content 50%, Mg type hectorite content, specific surface area 250 m ² / g, pore volume 1.1 ml / g (average particle diameter 80 μm) Comparative example 1: magnesium oxide content 30%, specific surface area 120 m ² / g, pore volume 1.0 ml / g (average particle diameter 15 μm) Comparative example 2: magnesium oxide content 80 %, Specific surface area 100 m ² / g, pore volume 1.0 ml / g (average particle diameter 20 μm) Comparative Example 3: magnesium oxide content 80%, specific surface area 400 m ² / g, pore volume 1.5 ml / g (average) Comparative Example 4: Magnesium oxide content 99%, specific surface area 120 m ² / g, pore volume 0.7 ml / g (average particle diameter 8 μm). Comparative Example 5: Magnesium oxide content 90%, specific surface area 300 m ² / g, pore volume 1.7 ml / g (average particle diameter 30 μm)

(1) Dry feeling Three panelists were allowed to enter a room at a temperature of 35 ° C. and a relative humidity of 80% for about 10 minutes to sweat, and each sample was placed on moist skin in a state where light sweat was wiped off. (1 g each), and the degree of smoothness at that time was subjected to a sensory evaluation according to the following criteria. The results show the average of three individuals. <Evaluation Criteria> ◎… Smooth feeling ○… Smooth feeling △… Slightly smooth feeling ×… Slightly smooth feeling

(2) Deodorizing Effect A panel consisting of 15 men and 15 women judged to have strong axillary odor was subjected to a deodorizing test as follows. The sample was applied to one armpit of the panel and the other was used as a control.
Each time, the sample was applied four times in total. The odor was evaluated by applying a cotton pad to the armpit and collecting the odor after 10 minutes, and comparing the odor of the pad with the control by a professional judge.
The case where the odor intensity was clearly lower than that of the control was judged as having a good deodorizing effect, and the numerical value was expressed by the number of panelists who recognized the deodorizing effect among 30 panelists.

[0022]

[Table 1]

Examples 6 and 7 Powder spray type antiperspirant: <Blending amount (%)> <Ingredient> Example 6 Example 7 Stephensite 0.1 0.1 (20 μm) Chlorhydroxyaluminum 4.0 4 3.0 Magnesia silica (particle diameter; 10 μm) 3.0 3.0 Silicic anhydride (particle diameter; 10 μm) 4.0 4.0 Isopropyl myristate 3.0 3.0 Methylcyclopolysiloxane 1.5 1.5 Deca Methylpentasiloxane 3.0 3.0 Sorbitan trioleate 0.5 0.5 Stearyl glycyrrhetinate 0.02 0.02 Vegetable squalane 0.1 0.1 Triclosan-0.1 Benclay (20 μm) -0.5 Oxidation Magnesium powder (same as in Example 1) 0.6 2.0 Fragrance 0.2 0.2 Liquefied petroleum gas Remainder Remainder

Examples 8 and 9 Roll-on type antiperspirant: <Blending amount (%)> <Component> Example 8 Example 9 Magnesium oxide powder (same as Example 2) 10.0 0 Chlorhydroxyaluminum 20 0.0 20.0 Ethanol 35.0 35.0 Hydroxyethylcellulose (* 1) 0.6 0.6 Benzalkonium chloride 2.0 2.0 Chlorhexidine gluconate-0.2 Magnesia montmorillonite-8.0 (Particle size Chlorhexidine gluconate-Kunipia G 1.0-complex Perfume (lavender) 0.5 0.5 Purified water Remainder Remainder * 1 HEC-600 manufactured by Daicel Chemical Industries

Examples 10 and 11 Deodorant stick: <Blending amount (%)> <Ingredient> Example 10 Example 11 Magnesium oxide powder (same as Example 3) 35 Ethanol 75.0 75.0 Stearic acid Sodium 8.0 8.0 Sorbitol 4.0 4.0 Isopropylmethylphenol-0.5 Smectone (particle size; 4-7 μm)-3.5 Isopropylmethylphenol 4.0--Ionite H complex (particle size; 5-20μm) Fragrance Trace amount Trace amount Purified water Remainder Remainder

Example 12 Deodorant Hair Spray: <Ingredient (stock solution)><Blending amount (%)> Vinylpyrrolidone / vinyl acetate copolymer (molecular weight 100,000) 2.0 Tetraglycerin fatty acid ester 3.0 Magnesium oxide powder Body (same as in Example 5) 1.0 Polyoxyethylene-modified silicone (1,000,000 cs) 0.5 Polyoxyethylene 40 mol hardened castor oil 0.5 Methyl paraben 0.3 Perfume 0.1 Ethanol Residue A 50% stock solution, 30% liquefied petroleum gas and 20% dimethyl ether were mixed and a spray was prepared by a conventional method.

Example 13 Deodorant Hair Water: <Component> <Blending Amount (%)> Dimethyl Silicon 0.5 3-Methyl-1,3-butanediol 2.0 Stearyl Trimethyl Ammonium Chloride 0.5 Polyoxyethylene Modified Silicone (100,000 cs) 3.0 POE (20) lauryl ether 0.4 lauryl dimethylamine oxide 0.2 magnesium oxide powder (same as in Example 5) 0.5 sodium pyrrolidonecarboxylate 1.0 methyl paraben 0.3 citric Sodium acid salt 0.1 Hydroxymethoxybenzophenone sulfonic acid 0.1 Fragrance (lemon oil type) 0.1 Ethanol 20.0 Purified water balance

Example 14 Deodorant Lotion (All Purpose): <Ingredient> <Blending Amount (%)> Magnesium Oxide Powder (Same as in Example 1) 1.0 Bentonite 0.5 Montmorillonite 0.5 Decaglyceryl Mono Laurate 0.2 Hexaglyceryl tristearate 0.2 Diglycerin monoisostearate 0.1 Pyroglutamic acid isostearate polyoxy 0.2 Ethylene hydrogenated castor oil POE (20) Sorbitan monooleate 0.2 POE (25) Oleyl ether 0.8 POE (60) hardened castor oil 0.2 Rice fermented extract 0.2 Quince extract 0.1 Peony extract 0.6 Rose water 0.1 Dipotassium glycyrrhizinate 0.2 Oxidized coenzyme A 0.2 Trimethylglycine 0. 1 glycerin 7.0 1,3- Butylene glycol 3.0 Carboxyvinyl polymer (molecular weight 1,000,000 to 1.5 million) 0.3 Alkyl-modified carboxyvinyl polymer 0.1 Hydroxyethylcellulose (* 1) 0.2 Magnesia smectite 2.0 Arginine 0.1 Methylparaben 0.3 Propyl Paraben 0.1 Triisopropanolamine 0.05 Water extract of Callophyllis adnata 0.2 Extracted water Remainder Ethanol 12.0 Perfume (jasmine) Trace * 1 HEC-600 manufactured by Daicel Chemical Industries

[0029]

Industrial Applicability The deodorant cosmetic of the present invention has a good deodorant effect such as excellent deodorant and deodorant, and has a good feeling of use, and is particularly useful for body odors such as side odor, sweat odor and foot odor. It is suitable as a deodorant. Therefore, for example, it can be advantageously used as a deodorant type product such as aerosol, roll-on, powder, cream, stick, sheet, lotion, bath additive, hair blow, hair spray and the like.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Miki Suzuki 1-3-7 Honjo, Sumida-ku, Tokyo F-term in Lion Corporation (reference) 4C083 AA112 AB172 AB211 AB212 AB381 AB382 AB442 AC022 AC102 AC122 AC132 AC182 AC242 AC302 AC352 AC422 AC432 AC472 AC482 AC542 AC562 AC582 AC612 AC692 AC792 AC812 AC932 AD092 AD152 AD162 AD172 AD282 AD472 AD532 CC01 CC04 CC17 CC31 DD08 DD11 DD17 DD23 DD50 EE06 EE18

Claims (2)

[Claims] An active ingredient comprising a magnesium oxide powder having a magnesium oxide content of 50 to 100% by mass, a specific surface area of 120 to 300 m ² / g and a pore volume of 0.8 to 1.5 ml / g. As a deodorant cosmetic. 2. The deodorant cosmetic according to claim 1, further comprising an aluminosilicate in the magnesium oxide powder.