JPH1129456A - Aerosol composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an aerosol composition, having stability and excellent deodorant effects and capable of producing a natural and dry touch without causing a sense of incompatibility when used by compounding a specified powder component with a powder component, a specified surfactant and a propellant in a specific ratio. SOLUTION: This aerosol composition is obtained by compounding Nε- Iauroyl-L-lysine with a nonionic surfactant and a propellant. The amount of the compound Nε-lauroyl-L-lysine is 0.01-20.00 wt.% in the total amount of the composition. The inorganic powder is preferably a water-soluble metal salt such as chlorohydroxyaluminum or aluminum chloride and is preferably compounded in an amount of O.01-20.00 wt.%. The nonionic surfactant is preferably a glycerol fatty acid ester, a propylene glycol fatty acid ester, etc., and is preferably compounded in an amount of 0.01-10.00 wt.%. A spheroidal silicone resin having 0.5-15 μm mean particle diameter and 0.1-0.6 apparent specific gravity is preferably further compounded with the system.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an aerosol composition comprising Nε-lauroyl-L-lysine, an inorganic powder, a nonionic surfactant and a propellant. This aerosol composition has an excellent deodorizing effect, a natural dry feeling without any discomfort, and stability.

[0002]

2. Description of the Related Art A composition containing a powder of talc, kaolin, silica or the like is used for the purpose of preventing or suppressing stickiness and odor of the body due to sweat. Above all, many aerosol compositions are commercially available because of their ease of use and the refreshing sensation of the propellant during use.

However, these conventional compositions are:
It was not satisfactory in terms of stability, for example, the deodorizing effect and the feeling of dryness were not sufficient, or the powder precipitated in the composition, and was not redispersed even after shaking. In addition, talc, kaolin, silica and the like have a dry feeling, but have poor adhesion to the skin, so that when applied to the skin, they are uncomfortable. Thus, there has been a demand for the development of an aerosol composition having an excellent deodorizing effect, a natural dry feeling without any discomfort, and stability.

[0004]

In view of the above circumstances, the present inventors have conducted intensive studies to obtain an aerosol composition having an excellent deodorant effect, feeling of use, and stability. As a result, Nε-lauroyl-L-lysine was obtained. The present inventors have found that an aerosol composition containing an inorganic powder, a nonionic surfactant and a propellant has an excellent deodorizing effect, a natural smooth feeling without discomfort, and stability, thereby completing the present invention.

That is, the present invention relates to Nε-lauroyl-L
-An aerosol composition comprising lysine, inorganic powder, a nonionic surfactant, and an aerosol propellant.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.

[0007] Nε-lauroyl-L used in the present invention
-The amount of lysine is preferably 0.01 to 0.01% of the total amount of the composition.
To 20.00% by weight (hereinafter abbreviated as wt%), more preferably 0.1 to 10.0% by weight. 0.01wt
%, The smooth feeling may not be felt.
If the content is more than 0.00 wt%, clogging of an aerosol valve or the like may occur, which is not preferable.

The inorganic powder used in the present invention includes silicic acid, silicic anhydride, magnesium silicate, calcium silicate, aluminum silicate, barium silicate, strontium silicate, diatomaceous earth, talc, sericite, Mica, kaolin, montmorillonite, clay, bentonite, vermiculite, titanium oxide coated mica (titanium mica), bismuth oxychloride, boron nitride, zirconium oxide, magnesium oxide, zinc oxide, titanium oxide, lower titanium oxide, metal tungstate, Hydroxyapatite, zeolite, ceramic powder, chlorohydroxyaluminum, aluminum chloride, aluminum sulfate, basic aluminum bromide, basic aluminum iodide, chlorohydroxyaluminum zirconium, zinc sulfate, basic lactic acid Luminium zinc, aluminum oxide, calcium sulfate, barium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, red iron oxide, black iron oxide, yellow iron oxide, ultramarine, navy blue, chromium oxide, chromium hydroxide, calamine, carbon black, and these Conjugates. Among them, water-soluble metal salts such as chlorohydroxyaluminum, aluminum chloride, aluminum sulfate, basic aluminum bromide, basic aluminum iodide, chlorohydroxyaluminum zirconium, zinc sulfate and basic aluminum zinc lactate are effective in deodorizing effect. Particularly preferred.

The compounding amount of the inorganic powder is 0.0% of the total amount of the composition.
The content is preferably 1 to 20.00 wt%, more preferably 0.1 to 20.00 wt%.
1 to 10.0 wt%. If it is less than 0.01 wt%,
The desired deodorant effect may not be obtained, and 20.00
If it is added in excess of wt%, clogging of the aerosol valve or the like may be undesirably caused. The above-mentioned inorganic powders can be used alone or in combination of two or more.

The above-mentioned Nε-lauroyl-L-lysine and the inorganic powder used in the present invention preferably have an average particle size by volume of 0.5 to 50.0 μm. If the thickness is 0.5 μm, the effects of the present invention may not be obtained. If the thickness exceeds 50.0 μm, the aerosol valve or the like may be undesirably clogged. The volume-based average particle diameter can be measured by a laser diffraction scattering method or an electric resistance method.

The nonionic surfactants used in the present invention include solibitan fatty acid esters, glycerin fatty acid esters, polyglycerin fatty acid esters, propylene glycol fatty acid esters, pentaerythritol fatty acid esters, polyoxyethylene sorbitan fatty acid esters, and polyoxyethylene sorbitan fatty acid esters. Ethylene sorbite fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyethylene glycol fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene phytosterol, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene castor oil, Polyoxyethylene hydrogenated castor oil, polyoxyethylene beeswax derivatives, polyoxyethylene Lanolin derivatives, polyoxyethylene alkylamines, polyoxyethylene fatty acid amides, polyoxyethylene nonylphenyl formaldehyde condensates, and the like. Further, it is more preferable to add a compound having an HLB of less than 8 because the stability is particularly excellent.

The compounding amount of the nonionic surfactant is preferably 0.01 to 10.00% by weight, more preferably 0.1 to 5.0% by weight based on the total amount of the composition. 0.01wt%
If it is less than 1, the desired stability may not be obtained, and 1
If the content is more than 0.00 wt%, sticky feeling may be caused, which is not preferable. The above nonionic surfactants can be used alone or in combination of two or more.

The propellant used in the present invention includes Freon gas such as Freon 11, Freon 12, Freon 21, Freon 113, Freon 114 and Freon 134a, propane, and the like.
Preferred are hydrocarbon-based gases such as isobutane, normal butane, isopentane and neopentane, and liquefied gases such as dimethyl ether. In addition, carbon dioxide gas and nitrogen gas may be used. The above propellants can be used alone or in combination of two or more.

The amount of the propellant is 5 to 99% of the total amount of the composition.
wt% is preferred.

In the present invention, the volume-based average particle diameter is 0.5 to
15.0 μm and an apparent specific gravity (bulk specific gravity) of 0.1
When a spherical silicone resin having a particle size of from 0.6 to 0.6 is blended, a natural smooth feeling without discomfort is particularly excellent. The spherical silicone resin only needs to be approximately spherical, and the particle size distribution is within ± of the average particle size.
Those that fall within 30% are particularly preferred. The volume-based average particle diameter can be measured by a laser diffraction scattering method or an electric resistance method. If the volume-based average particle size is less than 0.5 μm, a particularly smooth feeling may not be obtained, and 15.0 μm
If it exceeds m, the stability may deteriorate. On the other hand, if the apparent specific gravity is less than 0.1 or exceeds 0.6, the stability is deteriorated, which is not preferable. Such silicone resins are preferably those made of polymethylsilsesquioxane, and are sold as Tospearl 120, Tospearl 130, Tospearl 145 (manufactured by Toshiba Silicone Co., Ltd.) and the like.

The amount of the silicone resin is preferably 0.01 to 20.00% by weight based on the total amount of the composition. 0.01wt
%, It may not be possible to obtain a particularly smooth feeling.
If it exceeds 20.00% by weight, stability may be deteriorated, which is not preferable.

As the components used in the present invention, known optional components other than the above-mentioned components can be blended as long as the effects are not impaired. For example, disinfectants, fats, waxes, silicone oils, antioxidants, organic powders, surfactants, fragrances, alcohols, preservatives, ultraviolet absorbers,
Chelating agents, humectants, thickeners, water, cooling agents, anti-inflammatory agents,
Examples include amino acids, plant extracts, clathrate compounds, and the like.

[0018]

Next, the present invention will be described in detail with reference to examples. Note that the present invention is not limited to these examples. The compounding amount is wt%. Prior to the examples, the evaluation method will be described below.

(1) Deodorizing effect A sample of the aerosol composition was used for 10 subjects. After that, it is placed in a constant temperature and humidity room at a temperature of 25 ° C and a humidity of 80%.
At time, the subject himself evaluated the body odor on a four-point scale. The most frequent answer among the 10 subjects was the evaluation result.

The evaluation criteria are as follows. ◎: very good (almost no smell) ○: good (slightly smell is not anxious) △: slightly bad (small is anxious) ×: bad (smell is very anxious)

(2) Dry feeling A sample of the aerosol composition was used for 10 subjects. After that, it is placed in a constant temperature and humidity room at a temperature of 25 ° C and a humidity of 80%.
At time, the subject himself evaluated the feeling of smoothness. The most frequent answer among the 10 subjects was the evaluation result.

The evaluation criteria are as follows. ◎: very dry ○: very dry △: slightly sticky ×: sticky

(3) Stability A sample of the aerosol composition is filled in a pressure-resistant glass bottle for aerosol, and left to stand for 24 hours. Then shake the glass bottle,
The dispersibility of the powder was evaluated.

The evaluation criteria are as follows. ◎: Very good ○: Good △: Somewhat bad ×: Bad

In Examples 1 to 11 and Comparative Examples 1 to 3, aerosol compositions were prepared by the usual methods using the components and amounts shown in Tables 1 and 2 below, and evaluated. The results are shown in Tables 1 and 2.

[0026]

[Table 1]

[0027]

[Table 2]

As is clear from Tables 1 and 2, the aerosol composition according to the present invention was excellent in all of the deodorizing effect, the dry feeling and the stability. In Comparative Examples lacking the essential components, any of the deodorant effect, the dry feeling, and the stability were insufficient.

Example 12 wt% (1) Nε-lauroyl-L-lysine 1.0 (“Amihope LL” manufactured by Ajinomoto Co.) (2) Chlorhydroxyaluminum (average particle size: about 30 μm) 1.0 (3) Talc 2.0 (4) Polyoxyethylene oleyl ether (2EO) 0.5 ("NIKKOL BO-2" HLB7.5 manufactured by Nikko Chemical Co., Ltd.) (5) Silicone resin 1.0 ("Tospearl 145" Toshiba Silicone Co., Ltd.) Average particle size 4.5 μm apparent specific gravity 0.43) (6) isopropyl isostearate 4.0 (7) octamethylcyclotetrasiloxane 1.0 (8) isopropylmethylphenol 0.2 (9) fragrance 0.3 ( 10) Isopentane 10.0 (11) Normal butane 79.0 An aerosol composition having the above composition was prepared by an ordinary method, Effect was evaluated silkiness, and for stability, good results were obtained is excellent both characteristics.

Example 13 wt% (1) Nε-lauroyl-L-lysine 1.0 (“Amihope LL” manufactured by Ajinomoto Co.) (2) Chlorhydroxyaluminum (average particle size: about 30 μm) 1.0 (3) Poly Oxyethylene oleyl ether (2EO) 0.3 ("NIKKOL BO-2" HLB7.5 manufactured by Nikko Chemical Co., Ltd.) (4) Talc 2.0 (5) Silicone resin 1.0 ("Tospearl 120" Toshiba Silicone Co., Ltd.) Average particle size 2.0 μm apparent specific gravity 0.35) (6) sorbitan sesquioleate 0.2 (7) light liquid isoparaffin 4.0 (“Palm Ream 4” manufactured by NOF Corporation) (8) methylphenylpolysiloxane 0 .8 (“TSF431” manufactured by Toshiba Silicone Co., Ltd.) (9) Highly polymerized methylpolysiloxane 0.2 (“TSF451-10MA” (10) Normal butane 84.5 (11) Dimethyl ether 5.0 An aerosol composition having the above composition was prepared by an ordinary method and evaluated for deodorant effect, dryness, and stability. Was also excellent and good results were obtained.

[0031]

The present invention provides an aerosol composition having an excellent deodorizing effect, a natural dry feeling without any discomfort, and stability.

Claims (4)

[Claims] 1. An aerosol composition comprising Nε-lauroyl-L-lysine, an inorganic powder, a nonionic surfactant, and a propellant. 2. The aerosol composition according to claim 1, wherein the inorganic powder is a water-soluble metal salt. 3. The aerosol according to claim 1, wherein a spherical silicone resin having an average particle diameter of 0.5 to 15 μm and an apparent specific gravity of 0.1 to 0.6 is blended. Composition. 4. The aerosol composition according to claim 1, wherein the nonionic surfactant has an HLB of less than 8.