JP2005314283A - Non-aqueous powder aerosol - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deodorizing composition having excellent deodorizing effects on body odors, particularly odors of lower fatty acids. <P>SOLUTION: The non-aqueous powder aerosol comprises a composition comprising the following components (A) and (B) filled in a pressure-resistant container equipped with a propelling mechanism: (A) a composite powder comprising 10-96 mass% of a cosmetic powder, 2-50 mass% of hydroxyapatite and 2-40 mass% of zinc oxide; and (B) a propellant. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a non-aqueous powder aerosol having an excellent deodorizing effect on body odor.

Body odors such as odor, sweat odor and foot odor are those in which sweat or sebum is decomposed by skin resident bacteria. Substances that cause malodor include lower fatty acids such as isovaleric acid and caproic acid, ammonia, butylamine, etc. Nitrogen-containing compounds, sulfur-containing compounds such as indole and ethyl mercaptan are known. Body odor is uncomfortable for humans and is a very psychological and mental burden, and various deodorant products have been developed. As a method for eliminating body odor, for example, a method of obtaining a deodorizing effect by using an aluminosilicate intercalation compound in addition to preventing the growth of resident bacteria with a bactericide or masking with a fragrance to eliminate body odor (Patent Document 1) ), A method of deodorizing while suppressing the generation of body odor using a specific phosphate ester and a plant extract (Patent Document 2), a method of using a chelating agent and a bactericide in combination (Patent Document 3), etc. ing.
However, such a method is not yet sufficient for eliminating body odor, and development of a deodorant composition having an excellent effect for eliminating body odor based on lower fatty acids is desired.
JP 2002-68949 A JP 2002-29954 A JP 2003-183144 A

  An object of the present invention is to provide a deodorant composition having an excellent deodorizing effect on body odor.

  The present inventors diligently searched for a composition having an excellent deodorizing effect on body odor. As a result, a powder obtained by combining a specific amount of hydroxyapatite and zinc oxide with a powder for cosmetics was placed in a pressure-resistant container and an aerosol was obtained. As a result, it was found that a non-aqueous powder aerosol excellent in deodorizing body odor was obtained, and the present invention was completed.

That is, the following components (A) and (B);
(A) Composite powder containing 10 to 96% by mass of cosmetic powder, 2 to 50% by mass of hydroxyapatite and 2 to 40% by mass of zinc oxide (B) A composition containing a propellant is provided with an injection mechanism. A non-aqueous powder aerosol filled in a pressure vessel is provided.

  The non-aqueous powder aerosol of the present invention is excellent in deodorizing body odors, particularly lower fatty acid odors. Moreover, it is excellent in sebum absorption and feeling of use, and is excellent in skin cleanliness, skin feeling and antibacterial properties.

The composite powder of component (A) used in the present invention is a composite powder obtained by combining a cosmetic powder with zinc oxide and, if necessary, hydroxyapatite, and the surface of the cosmetic powder is coated with hydroxyapatite. In addition, those having zinc oxide attached to the surface thereof are preferable.
The powder for cosmetics is not particularly limited as long as it is a powder that can be used for cosmetics, and inorganic powders, organic powders, and composites thereof are used. The cosmetic powder can be used alone or in combination of two or more.

  Examples of the inorganic powder include clay minerals, metal oxides, and metal hydroxides. The inorganic powder may be a natural product or a synthetic product. Examples of clay minerals include kaolinite minerals such as kaolinite, decaite, nacrite, haloidite, antigolite, and chrysotile; smectite group minerals such as pyrophyllite, montmorillonite, nontronite, sabonite, hectorite, and bentonite; Sites, muscovite, biotite, lithia mica, phlogopite, synthetic mica, synthetic sericite and other illite group minerals; silicates such as calcium silicate, magnesium silicate, aluminum magnesium silicate; talc, serpentine And magnesium silicate group minerals such as zeolite and tourmaline (tourmaline). Examples of the metal oxide include silica, alumina, titanium oxide, cerium oxide and the like. Examples of the metal hydroxide include aluminum hydroxide and magnesium hydroxide. In addition to these inorganic powders, bismuth oxychloride, barium sulfate, and the like can also be used.

  Examples of the organic powder include nylon powder, polyethylene powder, polypropyne powder, polystyrene powder, vinyl acetate powder, polymethacrylate powder, polyacrylonitrile powder, and cellulose powder.

Examples of the inorganic-inorganic composite include silica-titanium oxide, silica-zinc oxide, silica-titanium oxide-silica, silica-cerium oxide-silica, silica-zinc oxide-silica and the like; titanium mica, coloring Pearl pigments such as titanium mica, titanium oxide-barium sulfate, titanium oxide-talc, zinc oxide-mica, zinc oxide-talc, bismuth oxychloride-mica; the surfaces of these are aluminum hydroxide, aluminum oxide, magnesium hydroxide, oxidation Examples include pearl pigments treated with magnesium, silica treatment, barium sulfate, and the like.
Examples of organic-inorganic composite powders include hard capsules such as titanium oxide-encapsulated polymethyl methacrylate (PMMA), zinc oxide-encapsulated PMMA, and cerium-encapsulated PMMA; polyethylene-zinc oxide, polyethylene-titanium oxide, polyethylene-aluminum hydroxide And polyethylene-aluminum hydroxide-PMMA.
Examples of the organic-organic composite powder include nylon-cellulose.

  There are no particular restrictions on the particle shape of the cosmetic powder used. Examples of the shape include various shapes such as flaky shape, scaly shape, plate shape, spherical shape, spun shape, X shape, star shape, petal shape, starfish shape, ribbon shape, needle shape, hemispherical shape, rod shape, and the like. It is done. From the standpoint of preventing white residue, a flaky shape, a flaky shape, a plate shape, a rod shape, or the like is preferable, and a plate shape, a flaky shape, or a flaky shape is particularly preferable.

  As these cosmetic powders, sericite, talc and the like are preferable, and plate-like, flaky or scaly sericite and talc are particularly preferable.

The cosmetic powder preferably has an average particle size of 0.1 to 600 μm, more preferably 0.3 to 140 μm, still more preferably 1 to 80 μm, and most preferably 2 to 50 μm. The average particle diameter is a value measured by a laser diffraction / scattering method.
The cosmetic powder is contained in the composite powder in an amount of 10 to 96% by mass, preferably 10 to 88% by mass.

Hydroxyapatite covering such a cosmetic powder is calcium phosphate having an apatite structure with Ca / P = 0.5 to 2.0 (molar ratio) (Fragrance Journal, p144). 148, 1999), there are no particular restrictions on the use, such as Ca ₅ (PO ₄ ) ₃ (OH), Ca ₁₀ (PO ₄ ) ₆ (OH) ₂ , Ca ₄ (PO ₄ ) ₂ O, Examples thereof include Ca ₁₀ (PO ₄ ) ₆ F ₂ .

  The covering amount of hydroxyapatite is preferably 2 to 50% by mass, more preferably 5 to 30% by mass, and particularly preferably 10 to 20% by mass of hydroxyapatite in the composite powder from the viewpoint of deodorizing effect. If the hydroxyapatite content exceeds 50% by mass, an effective deodorizing effect cannot be expected. Although there is no restriction | limiting in particular about the thickness of a coating layer, It is preferable that it is 0.05-4 micrometers, especially 0.1-2 micrometers.

  The method for coating the surface of the powder for cosmetics with hydroxyapatite is not particularly limited. For example, the powder is mixed in a rotary mixer such as a cylindrical type or a V type, or a fixed type mixer such as a screw type or a ribbon type. Can be done.

  Zinc oxide adheres to, preferably adheres to, the hydroxyapatite coating layer on the surface of the cosmetic powder. As the zinc oxide, use of low crystalline zinc oxide, amorphous zinc oxide or a mixture thereof is preferable in terms of deodorizing effect. The average particle diameter is preferably 0.01 to 1 μm, more preferably 0.03 to 0.5 μm, and even more preferably 0.05 to 0.1 μm.

  Here, “low crystallinity” refers to a state in which crystal planes are not neatly arranged in a myriad of random orientations of small crystals, and is determined by the crystal size obtained by the Scherrer equation (special feature). No. 2002-20218).

(Scherrer formula)
L = (Kλ) / (β ₀ COSθ _B )
L: Crystal size (Angstrom)
K: Constant (= 1.0)
λ: X-ray wavelength (= 1.5406 angstrom)
θ _B : Bragg angle;
β ₀ = (β _E ² −β _I ² ) ^1/2
β _E : Apparent half width (actual value)
β _I : apparatus constant (= 1.75 × 10 ⁻³ rad.)

The low crystalline zinc oxide used in the present invention preferably has a crystal size of 1000 angstroms or less, more preferably 20 to 1000 angstroms, and even more preferably 30 to 1000 angstroms.

  The method for adhering zinc oxide to the surface of the hydroxyapatite coating layer of the cosmetic powder is not particularly limited, and it may be mixed and adhered using the same mixer as that used for hydroxyapatite coating.

  Zinc oxide is attached to the composite powder in an amount of 2 to 40% by mass, but it is preferably 10 to 40% by mass, more preferably 10 to 35% by mass, and particularly preferably 15 to 35% by mass in terms of deodorizing effect. . If the content of zinc oxide is less than 10% by mass, the deodorizing effect is not sufficient, and if it exceeds 40% by mass, the feeling of use deteriorates.

  The composite powder thus produced conforms to the size of the cosmetic powder used as a raw material, but the average particle size is 0.1 to 600 μm, more preferably 0.3 to 140 μm, particularly 2 to 50 μm. Is preferred.

  The composite powder used in the present invention can be produced by coating the surface of a cosmetic powder with hydroxyapatite and then depositing zinc oxide. The production method described in JP-A-2002-20218 Can be manufactured by.

  The composite powder used in the present invention may be surface-treated with a fluorine compound, silicone, metal soap or the like.

The composite powder produced as described above is preferably used in the non-aqueous powder aerosol of the present invention as a stock solution dispersed in a non-aqueous medium together with powders other than the composite powder if necessary.
The content of the composite powder in the non-aqueous powder aerosol is 0.1 to 20% by mass, more preferably 2 to 15% by mass, particularly 5 to 10% by mass in the stock solution in terms of the deodorizing effect. preferable.

  In the non-aqueous powder aerosol of the present invention, powders other than the composite powder of component (A) can be appropriately blended depending on the purpose. Examples of the powder include the aforementioned inorganic powder for cosmetics, organic powder or a composite thereof, antiperspirant, hydrophobized viscosity mineral powder, organic acid powder, and cyclodextrins. The inorganic powder for cosmetics, the organic powder, or a composite thereof may be surface-treated. Examples of the surface treatment include silicon treatment, Teflon (registered trademark) treatment, amino acid treatment, lecithin treatment, ester treatment, polyethylene treatment, and urethane treatment.

  Antiperspirants include chlorohydroxy aluminum, zinc paraphenol sulfonate, aluminum hydroxide, aluminum chloride, aluminum sulfate, aluminum citrate, aluminum acetate, basic aluminum chloride, aluminum phenol sulfonate, aluminum β-naphthol disulfonate, Sodium perborate, aluminum zirconium octachlorohydrate, aluminum zirconium pentachlorohydrate, aluminum zirconium tetrachlorohydrate, aluminum zirconium trichlorohydrate, zirconium chlorohydrate, potassium aluminum sulfate, allantochlorohydroxyaluminum, basic bromide Aluminum, aluminum naphthalene sulfonic acid, base Aluminum iodide, and zinc oxide. When mix | blending antiperspirant, it is 0-60 mass% in stock solution, More preferably, it is 10-40 mass%, It is preferable to contain especially 20-35 mass%.

  When a powder other than the composite powder is contained, the total amount of the composite powder and other powders is 0.1 to 80% by mass, more preferably 30 to 70% by mass, particularly 45 to 65% in the stock solution. It is preferable that it is mass%.

  In the non-aqueous powder aerosol of the present invention, it is preferable in terms of the deodorizing effect of body odor to disperse the composite powder in a non-aqueous medium. Examples of the non-aqueous medium for the stock solution of the non-aqueous powder aerosol include lower alcohols, glycols, silicone oils, hydrocarbons, aliphatic alcohols, cooling agents, surfactants, oils and fats, and fatty acid esters. The non-aqueous medium may be used alone or in combination of two or more.

  Examples of the lower alcohol include ethyl alcohol and isopropyl alcohol, and examples of the glycol include ethylene glycol and propylene glycol.

  Examples of the silicone oil include dimethylpolysiloxane, methylpolysiloxane, cyclic dimethylpolysiloxane, methylhydrogenpolysiloxane, and a crosslinked methylpolysiloxane mixture.

  Examples of the hydrocarbon include polyisobutylene, squalane, squalene, petrolatum, and liquid paraffin.

  The aliphatic alcohol is an aliphatic alcohol having 6 to 26 carbon atoms, preferably 14 to 20 carbon atoms, and examples thereof include stearyl alcohol, isostearyl alcohol, octyldodecanol and the like.

  Examples of cooling agents include menthol; menthol derivatives such as menthyl glyceryl ether and menthyl lactate camphor; and eucalyptus oil.

  Surfactants include sorbitan trioleate, polyoxyethylene monooleate, polyoxyethylene nonyl phenyl ether, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ether phosphate, polyoxyethylene alkyl glyceryl, polyoxyethylene alkyl cured Nonionic surfactants such as castor oil, polyether-modified silicone, and alkyl-modified silicone can be used.

  Examples of the fat include avocado oil, olive oil, sesame oil, sunflower oil, soybean oil, camellia oil, corn oil, rapeseed oil, castor oil, sunflower oil, jojoba oil, cottonseed oil, cacao oil, palm oil, coconut oil and the like.

  Examples of fatty acid esters include diisopropyl adipate, hexyldecyl isostearate, cetyl isooctanoate, oleyl oleate, decyl oleate, isopropyl palmitate, isopropyl myristate, and the like.

  Non-aqueous media include ethanol, dimethylpolysiloxane, cyclic dimethylpolysiloxane, squalane, squalene, octyldodecanol, isostearyl alcohol, menthol, menthol derivatives, polyoxyethylene hydrogenated castor oil, polyether-modified silicone, jojoba oil Sunflower oil, avocado oil, isopropyl palmitate, isopropyl myristate and the like are preferable.

The content of the non-aqueous medium in the stock solution is preferably 0 to 80% by mass, preferably 10 to 80% by mass, more preferably 25 to 55% by mass, and particularly preferably 35 to 45% by mass.
The viscosity of the stock solution is preferably 5 to 4000 mPa · s at 25 ° C. from the viewpoint of jetting stability.
Further, the stock solution of the non-aqueous powder aerosol of the present invention contains substantially no water, but may contain water to such an extent that it can be carried over from the raw material. It is preferable to control the water content so that it is not more than mass%.

  The content mass ratio of the powder and the non-aqueous medium in the stock solution is 20-80: 80-20, further 30-80: 70-20, especially 35-65: 65-35 for the powder: non-aqueous medium. Is preferred.

  In the stock solution, in addition to powders such as composite powders, non-aqueous media, antioxidants, bactericides, humectants, wetting agents, water-soluble polymers, UV absorbers, medicinal agents, herbal medicines and herbs, etc. Plant extract liquids; plant essential oils such as lavender, lemon, lime, jasmine, mint and rose; optional ingredients such as animal fragrances such as musk, civet and castrium, and other synthetic fragrances may be appropriately blended.

  Bactericides include benzalkonium chloride, triclosan, isopropylmethylphenol, 3,4,4-trichlorocarbanilide (TC), triethyl citrate (TEC), benzalkonium chloride, Examples include benzotonium chloride, alkyltrimethylammonium chloride, resorcinol, phenol, sorbic acid, salicylic acid, hexachlorophene, chlorhexidine gluconate, chlorhexidine hydrochloride, isopropylmethylphenol, silver-supported zeolite, silver-supported silica, and the like.

  Examples of the propellant of component (B) of the present invention include liquefied petroleum gas (LPG), carbon dioxide gas, nitrogen gas, dimethyl ether and the like, and liquefied petroleum gas is preferred. Examples of the liquefied petroleum gas include propane, n-butane, isobutane, n-pentane, isopentane, and mixtures thereof. Further, dimethyl ether or the like may be mixed with liquefied petroleum gas to adjust the injection pressure and powder scattering.

  The mixing mass ratio of the stock solution and the propellant in the non-aqueous powder aerosol is such that the stock solution / propellant is 0.5 to 95 / 99.5 to 5, more preferably 2 to 40/98 to 60, particularly 5 to 15/95. It is preferable that it is -85.

  The non-aqueous powder aerosol of the present invention is used for antiperspirant / deodorant agent (deodorant), foot spray and the like.

  Next, the present invention will be described in more detail by way of examples. The present invention is not limited to the following examples.

Example 1
JP 2002-20218 A Composite powder (a) (zinc oxide content: 20 mass%) and composite powder (b) (zinc oxide content: 5 mass) produced according to the powder production of Example 1 %) 0.1 g and 3 mL of 3% by volume isovaleric acid aqueous solution were put into a vial, covered and sonicated for 1 minute, then equilibrated in an HS oven at 60 ° C. for 15 minutes, and then HS-GC. The remaining amount of isovaleric acid in the aqueous solution was measured.
In the system using the composite powder (a), 1.0% of isovaleric acid remained in the aqueous solution, and in the system using the composite powder (b), 48.5% of isovaleric acid remained. In the system using talc (comparison), 97.3% of isovaleric acid remained.

Example 2
An aerosol stock solution having the following formulation was prepared.
Composite powder (a or b) 3.0% by mass
Silicon processing talc 20.0
Chlorhydroxyaluminum 20.0
Dibutylhydroxytoluene 0.2
Isopropylmethylphenol 0.2
Isopropyl myristate 15.0
Polyether-modified silicone 2.0
Perfume appropriate amount Dimethylpolysiloxane Balance amount

50 mg of the obtained stock solution and 10 μL of 8% by volume isovaleric acid DMF solution were placed in a vial, capped, sonicated for 1 minute, and then equilibrated in an HS oven at 60 ° C. for 15 minutes. The remaining amount of isovaleric acid in the aqueous solution was measured by GC.
The stock solution to which the composite powder (a) was added had 54.6%, and the stock solution to which the composite (b) was added had 69.4% of isovaleric acid remaining. The stock solution containing no composite powder had 93.6% of isovaleric acid remaining.

Example 3
The following non-aqueous powder aerosol was prepared.
Stock solution: Composite powder (a) 10% by mass (in stock solution)
Maltosyl-β-cyclodextrin
And citric acid complex 2
Chlorhydroxyaluminum 20
Talc 25
Isopropyl myristate 18
Cyclic dimethylpolysiloxane 25
Propellant: LPG 50% by mass
Isopentane 50
Stock solution / propellant = 10/90 (mass ratio)

  The obtained non-aqueous powder aerosol had a deodorizing effect superior to that of a commercially available non-aqueous powder aerosol.

Claims (5)

The following components (A) and (B);
(A) Composite powder containing 10 to 96% by mass of cosmetic powder, 2 to 50% by mass of hydroxyapatite and 2 to 40% by mass of zinc oxide (B) A composition containing a propellant is provided with an injection mechanism. Non-aqueous powder aerosol filled in a pressure vessel.   The non-aqueous powder aerosol according to claim 1, wherein the composite powder (A) contains 10 to 88% by mass of a powder for cosmetics, 2 to 50% by mass of hydroxyapatite, and 10 to 40% by mass of zinc oxide.   The non-aqueous powder aerosol according to claim 1 or 2, further comprising (C) a non-aqueous medium.   The non-aqueous powder aerosol according to any one of claims 1 to 3, wherein the composite powder (A) is obtained by coating the surface of a cosmetic powder with hydroxyapatite and then attaching zinc oxide to the surface. .   The non-aqueous powder aerosol according to any one of claims 1 to 4, wherein the content of the composite powder (A) in the aerosol stock solution is 0.1 to 20% by mass.