JP2009001508A - Aerosol composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an aerosol composition having excellent redispersibility of powder with scarcely any change in odor and affording an excellent dry feeling of use without stickiness when applied to the skin. <P>SOLUTION: The aerosol composition comprises the powder, an oil and a liquefied gas. In the aerosol composition, the oil contains a dispersing agent and an oily base. The dispersing agent is a nitrogen-containing nonionic surfactant. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an aerosol composition that has almost no change in odor, is excellent in powder redispersibility, does not become sticky when applied to the skin, and provides a smooth and excellent feeling of use.

  Conventionally, aerosol compositions containing powder have been used as antiperspirants and the like. This aerosol composition consists of powder containing active ingredients, oil and liquefied gas. When sprayed, the liquefied gas evaporates to give the skin a feeling of cooling, and the powder adheres evenly to the skin surface. Is granted.

  Aerosol compositions containing powder, when not in use, powder settles and accumulates at the bottom of the container, so it is necessary to shake the container up and down to disperse the powder in the aerosol composition before use The oil is mixed with a dispersant such as a surfactant so that the powder can be easily dispersed by a shaking operation.

  As such an aerosol composition, for example, a powder aerosol composition containing a nonionic surfactant as a dispersant (see, for example, Patent Document 1), and an antiperspirant deodorant spray containing polyether-modified silicone as a dispersant. Compositions (for example, refer to Patent Document 2), antiperspirant spray compositions (for example, refer to Patent Document 3) containing a phosphate anionic surfactant as a dispersant are known.

  However, these conventional aerosol compositions contain a fragrance, but there are problems such as a change in the odor of the fragrance itself and a mixture of odors, and this tendency becomes stronger especially with time.

  Therefore, the present situation is that there is no aerosol composition that hardly changes in odor, is excellent in redispersibility of powder, does not become sticky when applied to the skin, and provides a smooth and excellent feeling of use.

Japanese Patent Laid-Open No. 3-157327 JP 2004-292446 A JP-A-9-157147

  An object of the present invention is to provide an aerosol composition that has almost no change in odor, has excellent powder redispersibility, does not become sticky when applied to the skin, and provides a smooth and excellent feeling of use. .

  That is, the present invention relates to an aerosol composition containing a powder, an oil component and a liquefied gas, wherein the oil component contains a dispersant and an oily base, and the dispersant is a nitrogen-containing nonionic surfactant. .

  It is preferable that the compounding quantity of a dispersing agent is 0.01-5 weight part in 100 weight part of aerosol compositions.

  The nitrogen-containing nonionic surfactant is preferably a polyoxyethylene alkylamine.

  The oil base preferably contains an ester oil of a fatty acid and a polyhydric alcohol.

  It is preferable that the IOB value of ester oil is 0.2-0.6.

  The viscosity of the ester oil at 20 ° C. is preferably 25 to 200 mPa · s.

  It is preferable that the compounding quantity of ester oil is 0.1-15 weight part in 100 weight part of aerosol compositions.

  According to the present invention, it is possible to provide an aerosol composition that has almost no change in odor, is excellent in powder redispersibility, does not become sticky when applied to the skin, and provides a smooth and excellent feeling of use. .

  The present invention relates to an aerosol composition containing powder, oil and a liquefied gas, wherein the oil contains a dispersant and an oily base, and the dispersant is a nitrogen-containing nonionic surfactant.

  In the present invention, the powder is an active ingredient in the form of powder (main powder) which adheres to the skin and gives the powder itself an antiperspirant effect, an astringent effect, an ultraviolet scattering effect, an antibacterial effect, and / or the like. Auxiliary powders that have auxiliary actions such as the action of adhering the main powder to the skin and the action of imparting a smooth feeling to the skin to improve slipping and touching can be mentioned, and these can be used alone or in combination. Can be used.

  Examples of the main powder include chlorohydroxyaluminum having an antiperspirant effect, zinc oxide having an astringent effect, titanium oxide having an ultraviolet scattering effect, and silver having an antibacterial effect. Examples of auxiliary powders include talc, silicic acid anhydride, corn starch, mica, mica titanium, magnesium oxide, magnesium carbonate, calcium carbonate, nylon 6, nylon 66, nylon 12, polyethylene, polypropylene, polystyrene, polycarbonate, polyester, and acrylic resin. , Fluorine resin, silicone resin, ethylene / acrylic acid copolymer, and the like. In order to further improve the feeling of use, it is preferable to use a spherical powder obtained by processing silicic anhydride or an ethylene / acrylic acid copolymer into a spherical shape. Further, the main powder may be mixed with the auxiliary powder supported.

  As usage-amount of powder, it is preferable that it is 0.5-20 weight part in 100 weight part of aerosol compositions, and it is more preferable that it is 1-15 weight part. If the amount of powder used is less than 0.5 parts by weight, the effect as the main powder and the effect as an auxiliary powder tend to be difficult to obtain, and if it exceeds 20 parts by weight, it becomes difficult to spray with a uniform composition. In addition, the aerosol valve tends to be clogged.

  In addition, when using main powder, it is preferable to mix | blend with auxiliary powder, and it is preferable that the compounding ratio of main powder / auxiliary powder is 90 / 10-50 / 50 (weight ratio). When the blending ratio is larger than 90/10, the proportion of the auxiliary powder in the powder is reduced, the amount of powder adhering tends to decrease, and the slip and the touch tend to decrease, and when it is smaller than 50/50 Tends to reduce the proportion of the active ingredient in the powder and make it difficult to obtain the effect of the active ingredient.

  The size (average particle diameter) of the powder is preferably 0.1 to 60 μm, and more preferably 0.5 to 50 μm. When the particle diameter is less than 0.1 μm, it becomes easy to cake hard at the bottom of the container when stored for a long period of time, and even if the container is shaken up and down, it is difficult to uniformly disperse. Furthermore, the powder tends to scatter when sprayed, and the adhesion to the skin tends to deteriorate. On the other hand, if the particle diameter exceeds 60 μm, the powder starts to settle in the course of spraying, so that it tends to be impossible to spray with a uniform composition. Furthermore, it tends to be easily clogged with the hole of the aerosol valve or the injection member.

  The oil used in the present invention comprises a dispersant and an oily base, makes the powder easy to adhere to the skin, adjusts the dispersibility of the powder, prevents the powder from precipitating on the skin, and the touch It is a component added for the purpose of adjusting the feeling of use such as ease of slipping.

  The amount of the oil component is preferably 0.2 to 25 parts by weight, more preferably 0.5 to 18 parts by weight, per 100 parts by weight of the aerosol composition. When the blending amount of the oil is less than 0.2 parts by weight, the powder tends to be difficult to adhere and easily scatter, and when it exceeds 25 parts by weight, the drying property tends to deteriorate and the feeling of use tends to decrease.

  The dispersant used in the present invention is used for the purpose of adjusting the dispersion state of the powder in the aerosol composition, and easily disperses the powder settled on the bottom of the container. Be able to spray with composition.

  The aerosol composition of the present invention is characterized by the use of a nitrogen-containing nonionic surfactant as a dispersant, and is excellent in powder dispersibility, without stickiness and providing a light feeling of use, Changes in odor over time can be suppressed.

  Examples of the nitrogen-containing nonionic surfactant include polyoxyethylene stearylamine, polyoxyethylene alkylamines such as polyoxyethylene oleylamine, polyoxyethylene stearamide, polyoxyethylene oleic acid amide, and other polyoxyethylenes. Examples thereof include polyoxyethylene alkylamines having 10 to 20 carbon atoms such as fatty acid amides, and polyoxyethylene fatty acid amides. Of these, polyoxyethylene alkylamine is preferably used.

  Further, the number of moles of ethylene oxide added in the nitrogen-containing nonionic surfactant is preferably 2 to 50, and more preferably 4 to 15. Furthermore, it is preferable to use those having an HLB of 8 to 12, more preferably polyoxyethylene alkylamine having an HLB of 8 to 11, for example, polyoxyethylene (5) stearylamine (HLB: 10.0). ) And polyoxyethylene (5) oleylamine (HLB: 9.0). Among these, polyoxyethylene oleylamine is preferable because the powder settled on the bottom of the container can be easily dispersed, and further, the dispersed state can be maintained for a while and sprayed with a uniform composition.

  The amount of the dispersing agent is preferably 0.01 to 5 parts by weight, more preferably 0.05 to 3 parts by weight, per 100 parts by weight of the aerosol composition. When the blending amount of the dispersant is less than 0.01 part by weight, the dispersibility of the powder is deteriorated, and it tends to be difficult to spray with a uniform composition. On the other hand, when the amount exceeds 5 parts by weight, it tends to remain on the skin and become sticky, and the feeling of use tends to decrease.

  The oil base is used not only as a solvent for the dispersant, but also for improving the adhesion of the powder, making it difficult to peel off the skin, and adjusting the moisture and friction of the skin surface to improve the feel and slip. It is done.

  Oily bases include ester oils, silicone oils, vegetable oils, and mixtures thereof. Among these, ester oils are preferred because they are stable even when time passes by combining with the dispersant, and the effect of suppressing the change in odor is particularly easily obtained.

  Examples of the ester oil include glyceryl tri-2-ethylhexanoate, trimethylolpropane triethylhexanoate, trimethylolpropane triisostearate, butyl ether propanediol ethyltriacetate, diglyceryl triisostearate, and pentaerythrityl tetraethylhexanoate. Examples include esters of branched fatty acids and polyhydric alcohols, and esters of linear fatty acids and polyhydric alcohols such as tri (capryl / capric acid) glyceryl, propylene glycol dicaprate, propylene glycol monocaprylate, and propylene glycol dicaprylate. Among these, esters of branched fatty acids and polyhydric alcohols are preferable because they are stable even when time passes by combining with the above-described dispersant, and the effect of suppressing the change in odor is particularly easy to obtain. -Glyceryl ethylhexanoate is more preferred.

  Among the ester oils, those having an IOB value of 0.2 to 0.6 are preferred, and those having an IOB value of 0.25 to 0.5 are more preferred. The IOB value is an index indicating the degree of polarity of oil, and is calculated by IOB value = inorganic value / organic value. When the IOB value is less than 0.2, the oiliness is too strong and tends to remain on the skin, and the feeling of use tends to decrease. If it is larger than 0.6, it tends to be removed by sweat or moisture, and the effect tends to be difficult to sustain.

  Moreover, it is preferable that the viscosity at 20 degreeC of the said ester oil is 25-200 mPa * s, and it is more preferable that it is 30-150 mPa * s. If the viscosity of the ester oil is less than 25 mPa · s, it tends to sag when sprayed on an uneven surface, and if it exceeds 200 mPa · s, it tends to cause a slimy feeling on the skin and tends to decrease the feeling of use. is there.

  The blending amount of the ester oil is preferably 0.1 to 15 parts by weight, more preferably 0.3 to 12 parts by weight, per 100 parts by weight of the aerosol composition. When the blending amount of the ester oil is less than 0.1 parts by weight, it tends to be difficult to obtain the effect of stability by combining with the dispersant and the effect of suppressing the change in odor, and the amount exceeds 15 parts by weight. It tends to remain on the skin and the feeling of use tends to decrease.

  Silicone oil is used for the purpose of improving skin slip and adjusting dryness. Examples of the silicone oil include octamethyltrisiloxane, decamethyltetrasiloxane, methylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and methylphenylpolysiloxane.

  Examples of vegetable oils include jojoba oil, rosehip oil, Asa oil, ylang ylang oil, fennel oil, olive oil, orange oil, camille oil, kayak oil, kiwi oil, cucumber oil, walnut oil, rice bran oil, safflower oil, Examples include jasmine oil, spearmint oil, camellia oil, palm oil, eucalyptus oil, and rosmary oil.

  The blending amount of the oily base is preferably 0.1 to 20 parts by weight, more preferably 0.5 to 15% by weight, per 100 parts by weight of the aerosol composition. When the amount of the oil base is less than 0.1% by weight, the adhesion of the powder is enhanced to make it difficult to peel off from the skin, and the moisture and friction of the skin surface are adjusted to improve the feel and slipperiness. The effect tends to be difficult to obtain, and if it exceeds 20% by weight, it tends to remain on the skin and the feeling of use tends to decrease.

  The mixing ratio of the dispersant and the oil base is not particularly limited, but the dispersant / oil base (weight ratio) is preferably 1/99 to 30/70, and 3/97 to More preferably, it is 20/80. When the ratio is less than 1/99, the blending ratio of the dispersant is reduced, so that the dispersibility of the powder tends to be lowered, and the odor tends to change with time. When the ratio exceeds 30/70, stickiness or irritation caused by the dispersant. Tend to be strong.

  The liquefied gas is a liquid having a vapor pressure in the container, and the aerosol composition is ejected to the outside by the vapor pressure. Further, when the liquefied gas is injected into the atmosphere, the liquefied gas is vaporized, and a cooling feeling is imparted by the heat of vaporization.

  Examples of the liquefied gas include propane, normal butane, isobutane and a mixture thereof, liquefied petroleum gas, dimethyl ether, and a mixture of liquefied petroleum gas and dimethyl ether. The liquefied gas may contain an aliphatic hydrocarbon having 5 carbon atoms such as normal pentane or isopentane, or a hydrofluoroether such as methyl perfluorobutyl ether or ethyl perfluorobutyl ether.

  The vapor pressure of the liquefied gas at 20 ° C. is preferably 0.1 to 0.3 MPa. When the vapor pressure of the liquefied gas is less than 0.1 MPa, the jetted matter is difficult to spread in a mist state at low temperatures, and tends to adhere locally. If it exceeds 0.3 MPa, the momentum of the propellant becomes too strong, and the amount of adhesion tends to decrease on the skin surface.

  The blending amount of the liquefied gas is preferably 70 to 99 parts by weight, more preferably 80 to 98 parts by weight, per 100 parts by weight of the aerosol composition. When the blending amount of the liquefied gas is less than 70 parts by weight, the projectile tends to sag on the ejection surface, and when it exceeds 99 parts by weight, it tends to scatter and the adhesion amount tends to decrease.

  The aerosol composition of the present invention may contain an active ingredient other than powder and a lower alcohol depending on the application.

  Examples of active ingredients other than the powder include refreshing agents such as l-menthol, camphor, and mint oil, astringents such as allantoin hydroxyaluminum, tannic acid, citric acid, and lactic acid, propylene glycol, glycerin, and 1,3-butylene. Moisturizers such as glycol, collagen, xylitol, sorbitol, hyaluronic acid, caronic acid, sodium lactate, dl-pyrrolidone carboxylate, keratin, casein, lecithin, urea, paraoxybenzoic acid ester, sodium benzoate, phenoxyethanol, benzalkco chloride Bactericidal (antibacterial) / preservatives such as nium, benzethonium chloride, parachlorometacresol, silver, lauryl methacrylate, geranyl crotolate, acetophenone myristate, benzyl acetate, benzyl propionate Deodorant / deodorant such as methyl benzoate, methyl phenylacetate, tea extract, retinol, retinol palmitate, pyridoxine hydrochloride, benzyl nicotinate, nicotinamide, nicotinic acid dl-α-tocopherol, vitamin D2, dl-α- Vitamins such as tocopherol, dl-α-tocopherol acetate, pantothenic acid, biotin, peony extract, loofah extract, rose extract, lemon extract, aloe extract, ginger root extract, eucalyptus extract, sage extract, seaweed extract, placenta extract, silk extract Liquids, various extracts such as aloe extract, and fragrances.

  When the active ingredient is blended, the blending amount is preferably 0.1 to 10 parts by weight, more preferably 0.2 to 5 parts by weight, per 100 parts by weight of the aerosol composition. If the blending amount of the active ingredient is less than 0.1 parts by weight, the blending effect of the active ingredient tends to be difficult to obtain. If it exceeds 10 parts by weight, the active ingredient concentration is high, which may adversely affect the skin.

  The lower alcohol is used as a solubilizing agent for an active ingredient that is difficult to dissolve in an ester or silicone oil, or for the purpose of adjusting the drying property. Examples of the lower alcohol include monohydric alcohols having 2 to 3 carbon atoms such as ethanol and isopropanol. The blending amount when blending the lower alcohol is preferably 0.1 to 10 parts by weight, more preferably 0.2 to 5 parts by weight, per 100 parts by weight of the aerosol composition. If the blending amount of the lower alcohol is less than 0.1 parts by weight, the blending effect of the lower alcohol tends to be difficult to obtain. If it exceeds 10 parts by weight, it tends to sag on the skin surface.

Although the manufacturing method of the aerosol composition of this invention is not specifically limited, It can manufacture as follows.
1) Fill the container with powder. When the powder is composed of two or more kinds, it may be filled with a pre-mixed powder or individually.
2) Fill the container with the dispersant added to the oil base and mixed.
3) Fill the container with the liquefied gas when attaching the aerosol valve.

  The obtained aerosol composition is stable with no odor change even when stored for a long period of time, so it is suitable for products that mask or add odors such as antiperspirants, deodorants, and fragrances. Used.

  EXAMPLES Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited thereto.

  The evaluation method of the aerosol composition obtained by the Example and the comparative example is shown below.

<Evaluation method>
(Appearance of oil)
When the dispersant was added to the oil base and mixed, the appearance was evaluated.
○: Transparent △: Slightly cloudy ×: Not dissolved

(Dispersibility of powder)
The aerosol product was allowed to stand in a thermostatic chamber at 25 ° C. for 1 month, and the dispersibility (redispersibility) of the powder when the container was shaken up and down was evaluated using a powder that had settled to the bottom of the container.
○: Aggregation of powder was not observed at the bottom of the container, and the powder was uniformly dispersed when shaken 1 to 10 times.
(Triangle | delta): Although a part of powder aggregated and lumped at the container bottom part, it was disperse | distributed uniformly, if it shakes 10 to 20 times.
X: Almost all of the powder is agglomerated or caked at the bottom of the container, and is not uniformly dispersed even if the container is shaken 21 times or more.

(Powder settling state)
The container was shaken up and down to uniformly disperse the powder and then allowed to stand to evaluate the state in which the powder settled.
○: No separation within 10 seconds.
(Triangle | delta): It isolate | separates within 10 second, but there is no clear density difference.
X: A clear density difference occurs within 10 seconds.

(Change in odor)
A time-lapse sample in which the aerosol product was stored in a thermostatic chamber at 45 ° C. for a predetermined period and a sample immediately after the same composition was produced were sprayed on a filter paper to evaluate the change in odor.
A: No abnormality in 6 months.
○: No abnormality in 3 months. Slightly strange odor in 6 months.
Δ: No abnormality in 2 months. Slightly strange smell in 3 months.
×: Odor change in 1 month.

(Feeling of use)
The touch when an aerosol product was sprayed onto the arm for 1 second was evaluated.
○: Dry and free flowing.
Δ: There is no stickiness, but there is a wet feel.
X: There is a sticky feeling.

Example 1
The aerosol composition shown in Table 1 was filled into a transparent polyethylene terephthalate aerosol container to produce an antiperspirant aerosol product.

＊１：アルミニウムヒドロキシクロライド（商品名、（株）マツモト交商製、平均粒子径４４μｍ以下）（以下同様）
＊２：クラウンタルク局方ＰＰ（商品名、松村産業（株）製、平均粒子径１０μｍ）（以下同様）
＊３：フロービーズＨＥ３０４０（商品名、住友精化（株）製、平均粒子径１０〜１２μｍ）（以下同様）
＊４：ＮＩＫＫＯＬ ＴＡＭＮＯ−５（商品名、日光ケミカルズ（株）製、ＨＬＢ９．０）（以下同様）
＊５：ＮＩＫＫＯＬ ＴＲＩＦＡＴ Ｓ３０８（商品名、日光ケミカルズ（株）製、ＩＯＢ値：０．３５、粘度：４３ｍＰａ・ｓ）（以下同様）
＊６：ＳＨ２４５（商品名：東レ・ダウコーニングシリコーン（株）製）（以下同様）
＊７：イソブタンとノルマルブタンの混合物。２０℃での蒸気圧が０．１５ＭＰａ（以下同様）

* 1: Aluminum hydroxychloride (trade name, manufactured by Matsumoto Co., Ltd., average particle size of 44 μm or less) (the same applies hereinafter)
* 2: Crown talc pharmacopoeia PP (trade name, manufactured by Matsumura Sangyo Co., Ltd., average particle size 10 μm) (the same applies hereinafter)
* 3: Flow beads HE3040 (trade name, manufactured by Sumitomo Seika Co., Ltd., average particle size of 10 to 12 μm) (the same applies hereinafter)
* 4: NIKKOL TAMNO-5 (trade name, manufactured by Nikko Chemicals, HLB 9.0) (the same applies hereinafter)
* 5: NIKKOL TRIFAT S308 (trade name, manufactured by Nikko Chemicals Co., Ltd., IOB value: 0.35, viscosity: 43 mPa · s) (the same applies hereinafter)
* 6: SH245 (trade name: manufactured by Toray Dow Corning Silicone Co., Ltd.) (hereinafter the same)
* 7: A mixture of isobutane and normal butane. Vapor pressure at 20 ° C is 0.15 MPa (hereinafter the same)

Example 2
An aerosol composition shown in Table 2 was filled into a transparent polyethylene terephthalate aerosol container to produce an antiperspirant aerosol product.

＊８：サイロスフェア１５０４（商品名、富士シリシア化学（株）製、平均粒子径４．５μｍ）（以下同様）
＊９：ＮＩＫＫＯＬ Ｔｒｉａｌａｎ ３０８（商品名、日光ケミカルズ（株）製、ＩＯＢ値：０．３４、粘度：６６ｍＰａ・ｓ）（以下同様）

* 8: Cyrossphere 1504 (trade name, manufactured by Fuji Silysia Chemical Ltd., average particle size: 4.5 μm) (the same applies hereinafter)
* 9: NIKKOL Trialan 308 (trade name, manufactured by Nikko Chemicals Co., Ltd., IOB value: 0.34, viscosity: 66 mPa · s) (the same applies hereinafter)

Example 3
The aerosol composition shown in Table 3 was filled in a transparent polyethylene terephthalate aerosol container to produce an antiperspirant aerosol product.

Example 4
An aerosol composition shown in Table 4 was filled into a transparent polyethylene terephthalate aerosol container to produce an antiperspirant aerosol product.

Example 5
The aerosol composition shown in Table 5 was filled in a transparent polyethylene terephthalate aerosol container to produce an antiperspirant aerosol product.

Example 6
An aerosol composition shown in Table 6 was filled into a transparent polyethylene terephthalate aerosol container to produce an antiperspirant aerosol product.

Example 7
An aerosol composition shown in Table 7 was filled into a transparent polyethylene terephthalate aerosol container to produce an antiperspirant aerosol product.

Example 8
An aerosol product for antiperspirant was produced in the same manner as in Example 1 except that the amount of polyoxyethylene (5) oleylamine was 0.01 parts by weight and the amount of liquefied petroleum gas was 92.39 parts by weight. .

Example 9
An aerosol product for antiperspirant was produced in the same manner as in Example 1 except that the amount of polyoxyethylene (5) oleylamine was 5.0 parts by weight and the amount of liquefied petroleum gas was 87.4 parts by weight. .

Example 10
An aerosol product for antiperspirant was produced in the same manner as in Example 1 except that the amount of glyceryl tri-2-ethylhexanoate was 0.1 parts by weight and the amount of liquefied petroleum gas was 94.6 parts by weight. .

Example 11
An aerosol product for antiperspirant was produced in the same manner as in Example 1 except that the amount of glyceryl tri-2-ethylhexanoate was 15.0 parts by weight and the amount of liquefied petroleum gas was 79.7 parts by weight. .

Comparative Example 1
An aerosol product was produced in the same manner as in Example 1 except that sorbitan fatty acid ester (trade name: SO-15R, manufactured by Nikko Chemicals Co., Ltd., HLB 3.7) was used as the dispersant.

Comparative Example 2
An aerosol product was produced in the same manner as in Example 1 except that decaglyceryl diisostearate (trade name: Decaglyn 2-ISV, manufactured by Nikko Chemicals Co., Ltd., HLB 10.0) was used as the dispersant.

Comparative Example 3
An aerosol product was produced in the same manner as in Example 1 except that decaglyceryl pentaoleate (trade name: Decaglyn 5-OV, manufactured by Nikko Chemicals Co., Ltd., HLB3.5) was used as the dispersant.

Comparative Example 4
An aerosol product was produced in the same manner as in Example 1 except that decaglyceryl monooleate (trade name: Decaglyn 1-OV, manufactured by Nikko Chemicals Co., Ltd., HLB 6.0) was used as the dispersant.

Comparative Example 5
An aerosol product was produced in the same manner as in Example 1, except that POE (20) sorbitan monopalmitate (trade name: TP-10EX, manufactured by Nikko Chemicals Co., Ltd., HLB 15.6) was used as the dispersant.

Comparative Example 6
An aerosol product was produced in the same manner as in Example 1 except that POE (20) sorbitan monooleate (trade name: TO-10V, manufactured by Nikko Chemicals Co., Ltd., HLB 15.0) was used as the dispersant.

Comparative Example 7
An aerosol product was produced in the same manner as in Example 1 except that POE (10) oleyl ether (trade name: BO-10V, manufactured by Nikko Chemicals Co., Ltd., HLB 14.5) was used as the dispersant.

  According to Table 8, it can be seen that the aerosol composition according to the present invention has almost no change in odor and is excellent in powder dispersibility.

Claims (7)

An aerosol composition containing powder, oil and liquefied gas,
An aerosol composition in which the oil contains a dispersant and an oily base, and the dispersant is a nitrogen-containing nonionic surfactant. The aerosol composition according to claim 1, wherein the amount of the dispersant is 0.01 to 5 parts by weight per 100 parts by weight of the aerosol composition. The aerosol composition according to claim 1 or 2, wherein the nitrogen-containing nonionic surfactant is polyoxyethylene alkylamine. The aerosol composition according to claim 1, wherein the oily base contains an ester oil of a fatty acid and a polyhydric alcohol. The aerosol composition according to claim 4, wherein the ester oil has an IOB value of 0.2 to 0.6. The aerosol composition according to claim 4 or 5, wherein the ester oil has a viscosity at 20 ° C of 25 to 200 mPa · s. The aerosol composition according to any one of claims 4 to 6, wherein the amount of the ester oil is 0.1 to 15 parts by weight per 100 parts by weight of the aerosol composition.