JPH08291023A - Aerosol composition - Google Patents

Abstract

PURPOSE: To obtain an aerosol composition having excellent deodorant effect, use feeling and stability by containing a specific spherical silicone resin, inorganic powder and an aerosol propellant. CONSTITUTION: This composition contains 0.01-20wt.% of a spherical silicone resin having 0.5-15μm average particle diameter and 0.1-0.6 apparent specific gravity, 0.01-20wt.% inorganic powder as a water-soluble metallic salt (e.g. chlorhydroxylaluminum) and 5-99wt.% of an aerosol propellant (e.g. normal butane). Further, preferably 0.01-10wt.% of a nonionic surfactant having <8 HLB is mixed to have excellent stability. Otherwise, well-known components such as oils and fats, waxes, silicones, an antioxidant, organic powder, a surfactant, a fragrance, alcohols, an antiseptic, an ultraviolet ray absorber, a chelating agent, a wet retentive agent, a thickener, water, a refreshing agent, a bactericide and an antinflammatory agent are suitably mixed to prepare the objective aerosol composition.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an aerosol composition containing a silicone resin, an inorganic powder and an aerosol propellant. This aerosol composition has an excellent deodorizing effect, a feeling of use, and stability.

[0002]

2. Description of the Related Art A composition containing a powder of talc, kaolin or the like is used for the purpose of preventing or suppressing stickiness and odor of the body due to sweat. Among them, a large number of aerosol compositions are commercially available due to their ease of use and the refreshing feel of a propellant during use.

[0003]

However, these conventional compositions do not have sufficient deodorizing effect or dry feeling, or the powder is precipitated in the composition, and even if shaken. It was not satisfactory in terms of stability as it was not redispersed.

[0004]

In view of the above circumstances, the present inventor has conducted diligent research to obtain an aerosol composition excellent in deodorant effect, usability and stability, and as a result, a spherical silicone resin and an inorganic powder have been obtained. The present inventors have found that an aerosol composition containing the above and an aerosol propellant has an excellent deodorizing effect, a feeling of use, and stability, and have completed the present invention.

That is, the present invention has an average particle size of 0.5 to 1
An aerosol composition comprising a true spherical silicone resin having an apparent specific gravity of 0.1 to 0.6, an inorganic powder, and an aerosol propellant.

The structure of the present invention will be described in detail below. The silicone resin used in the present invention has an average particle size of 0.5 to 15 μm and an apparent specific gravity of 0.1 to 15.
It is preferably 0.6. If it is non-spherical or is out of these ranges, a smooth feel may not be obtained or a rough feel may be given. As the silicone resin applied to the present invention, Tospearl (trade name, manufactured by Toshiba Silicone Co., Ltd.) and the like are commercially available.

The amount of the silicone resin compounded is preferably 0.01 to 20% by weight based on the total amount.

As the inorganic powder used in the present invention, silicic acid, anhydrous silicic acid, magnesium silicate, calcium silicate, aluminum silicate, barium silicate, strontium silicate, diatomaceous earth, talc, sericite, Mica, kaolin, montmorillonite, clay, bentonite, vermiculite, titanium oxide film 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 blue, dark blue, chromium oxide, chromium hydroxide, calamine, carbon black, composites of these The body. Among them, chlorohydroxyaluminum,
Water-soluble metal salts such as aluminum chloride, aluminum sulfate, basic aluminum bromide, basic aluminum iodide, chlorohydroxyaluminum zirconium, zinc sulfate, and basic aluminum zinc lactate are particularly preferable in terms of deodorizing effect.

The content of the inorganic powder is 0.01 to 2 in the total amount.
0% by weight is preferred. The above inorganic powders can be used alone or in combination of two or more.

The propellant used in the present invention includes CFCs such as CFC 11, CFC 12, CFC 21, CFC 113, CFC 114, CFC 134a, propane, and the like.
Hydrocarbon gases such as isobutane, normal butane, isopentane and neopentane, and liquefied gases such as dimethyl ether. In addition to these, carbon dioxide gas and nitrogen gas may be used. Each of the above propellants may be used alone or 2
A mixture of two or more species can be used.

The amount of propellant compounded is 5 to 99% by weight based on the total amount.
Is preferred.

In the present invention, the stability is particularly excellent when a nonionic surfactant having an HLB of less than 8 is blended. The nonionic surfactants may be used alone or in admixture of two or more.

The content of the nonionic surfactant is preferably 0.01 to 10% by weight based on the total amount.

As the component used in the present invention, in addition to the above-mentioned components, any conventionally known component can be blended within a range that does not impair the effect. For example, oils, waxes, silicones, antioxidants, organic powders, surfactants, fragrances, alcohols, preservatives, ultraviolet absorbers, chelating agents, moisturizers, thickeners, water, cooling agents, Examples include bactericides, anti-inflammatory agents, amino acids, plant extracts, inclusion compounds, and the like.

[0015]

The effects of the present invention are excellent deodorizing effect, feeling of use, and stability.

[0016]

EXAMPLES Next, the present invention will be described in detail with reference to examples. The present invention is not limited to this. The blending amount is% by weight. Prior to the examples, the evaluation method will be described below.

(1) Deodorizing effect A sample of the aerosol composition was used by 10 test subjects. Then, the test subject himself / herself evaluated the body odor for 2 hours in a constant temperature and humidity room at a temperature of 25 ° C. and a humidity of 80%.

The evaluation criteria are as follows. ◎: Very good (almost no odor) ○: Good (somewhat odorless) △: Somewhat bad (somewhat odorous) ×: Bad (very odorous)

(2) Feeling of use A sample of the aerosol composition was used by 10 test subjects. After that, the test subject himself / herself evaluated the dryness for 2 hours in a constant temperature and humidity room at a temperature of 25 ° C. and a humidity of 80%.

The evaluation criteria are as follows. ◎: Very smooth ○: Smooth △: Slightly sticky ×: Sticky

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

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

Aerosol compositions of Examples 1 to 7 and Comparative Examples 1 to 4 were prepared by the usual method and evaluated with the components and blending amounts shown in Table 1. The results are also shown in Table 1.

[0024]

[Table 1]

As is clear from Table 1, the aerosol composition according to the present invention was excellent in all of the deodorizing effect, the feeling of use and the stability. Further, the comparative examples lacking essential components were insufficient in deodorizing effect, feeling in use, and stability.

Claims (3)

[Claims] 1. A spherical silicone resin having an average particle size of 0.5 to 15 μm and an apparent specific gravity of 0.1 to 0.6, an inorganic powder and an aerosol propellant are contained. Aerosol composition. 2. The aerosol composition according to claim 1, wherein the inorganic powder is a water-soluble metal salt. 3. The aerosol composition according to claim 1 or 2, wherein the nonionic surfactant has an HLB of less than 8.