JP2003286130A - Foamable aerosol composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an foamable aerosol composition which keeps an aqueous stock solution and a hydrocarbon in a uniform state, has clear appearance, does not separate the aqueous stock solution from the hydrocarbon being an oily component even in the case of allowing the composition to stand for a long period of time and does not need shaking before use. <P>SOLUTION: This foamable aerosol composition comprises an aerosol composition composed of 90-99.5 wt.% of the aqueous stock solution containing 1-50 wt.% of a nonionic surfactant having 13-17 HLB and 0.5-10 wt.% of a 3-6C hydrocarbon and has 70-100% phototransmittance at 25°C. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to foamable aerosol compositions. More particularly, it relates to a uniform foamable aerosol composition which has a clear appearance in which hydrocarbons are solubilized in an aqueous stock solution, does not separate from the aqueous stock solution and hydrocarbons which are oily components, and does not need to be shaken before use. .

[0002]

2. Description of the Related Art Conventionally, an aqueous stock solution and a liquefied gas are used.
Various disclosures have been made on uniform (one-part) aerosol compositions.

Japanese Patent No. 2862491 discloses a mixed propellant of C1 to C6 alkyl ether such as dimethyl ether and C3 to C6 hydrocarbon such as propane and butane in an amount of 0.5 to 20% by weight and a surfactant (C6 to C20). Alkyl polyglucoside, etc.) 0.5-40% by weight, and coupling agent (PPG-10 butanediol) 0.5-
A transparent single-phase cosmetic composition containing 20% by weight is described.

Since the cosmetic composition contains amphipathic dimethyl ether as an essential component as a propellant, a uniform composition is easily obtained, but there is a problem that the foamability deteriorates when the amount of dimethyl ether is increased. .

When a resin container such as polyethylene terephthalate is used as a container for filling the cosmetic composition, the container is whitened by dimethyl ether, the pressure resistance of the container is lowered, and the appearance of the product is improved. Problems such as damage are likely to occur.

Further, Japanese Patent No. 2988730 discloses that
In a single phase containing 0.5 to 10% by weight of atomizing gas and 90 to 99.5% by weight of an aqueous composition comprising a mixture of surfactants selected from nonionic and amphoteric surfactants. A transparent composition is described. It is described that it is preferable to use an emulsion type surfactant and a thickening surfactant as the nonionic surfactant.

However, since the aqueous composition is thickened with a thickening surfactant in order to suppress the separation of the spray gas and form a stable composition, a foamy discharge product becomes sticky,
There is a problem that it is hard to apply and the usability is poor.

Further, JP-A-9-143039 discloses a stock solution of higher alcohol, a surfactant, ethanol and water, and a propellant containing liquefied petroleum gas. The stock solution and the propellant are uniform. Aerosol compositions that form various liquid phases are described.

However, since the higher alcohol is mixed in the stock solution containing water, there is a problem that the higher alcohol is likely to be deposited at a low temperature and the valve or the discharging member is easily clogged.

As a specific example of the propellant, the ratio of LPG (liquefied petroleum gas) to DME (dimethyl ether) is 10
Although it is described that the ratio is preferably 0: 0 to 50:50, the examples all use a mixture of LPG and DME, and although a uniform aerosol composition is easily obtained, foamability There are problems such as deterioration and impact on containers.

[0011]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems and makes an aqueous stock solution and a hydrocarbon into a uniform state, and even when left standing for a long time, the aqueous stock solution and a hydrocarbon which is an oil component. It is an object of the present invention to provide a foamable aerosol composition which is not separated from and does not need to be shaken before use.

[0012]

That is, the present invention provides H
LB is 13 to 17 nonionic surfactant 1 to 5
An aerosol composition comprising 90 to 99.5% by weight of an aqueous stock solution containing 0% by weight and 0.5 to 10% by weight of a hydrocarbon having 3 to 6 carbon atoms, and having a permeability of 70 at 25 ° C. ~ 100% effervescent aerosol composition.

The nonionic surfactant is polyglycerin fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkyl ether,
It is preferably one selected from polyoxyethylene polyoxypropylene alkyl ether or a mixture thereof. 5 to 50 of polyol in the aqueous stock solution
It is preferable to contain it by weight%. Furthermore, it is preferable to contain a pressurizing agent.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The aerosol composition of the present invention is
Nonionic surfactant 1 to 50 having LB of 13 to 17
90% to 99.5% by weight of an aqueous stock solution containing 0.5% by weight and 0.5 to 10% by weight of a hydrocarbon having 3 to 6 carbon atoms, and a permeability of 70 to 100% at 25 ° C. It is characterized by being a foamable aerosol composition.

By blending an aqueous stock solution containing a nonionic surfactant having a specific range of HLB in a specific amount and a hydrocarbon having a specific carbon number in a specific ratio, the aerosol composition becomes uniform, A foamable aerosol composition having a specific permeability is obtained.

Therefore, the aerosol composition of the present invention is
Even when left standing for a long period of time, the aqueous stock solution and the hydrocarbon that is an oily component are not separated, and the operation of shaking the container before use and mixing the aerosol composition in the container is unnecessary,
It can be fixed to a vanity, washbasin, table, display rack, etc.,
The aerosol composition can be used in the stationary state.

The nonionic surfactants, HLBs 13 to 17, are used for the purpose of providing a transparent and uniform aerosol composition in which the aqueous stock solution and the hydrocarbon are separated into layers or the aerosol composition is not clouded by the hydrocarbon. In addition, when the aerosol composition is further discharged, the hydrocarbon is used to vaporize and form a foam. Further, when the aerosol composition is used as a cleansing agent, it is used as an active ingredient for emulsifying and removing unnecessary oil components on the skin.

The HLB of the surfactant is preferably 13 to 17, and more preferably 13.5-16.5. HL
When B is smaller than 13 or exceeds 17, the aqueous stock solution and the hydrocarbon are easily separated, and a uniform aerosol composition cannot be obtained.

As the nonionic surfactant having an HLB of 13 to 17, pentaglyceryl monolaurate (14.0) and pentaglyceryl monomyristate (1
3.0), pentaglyceryl monooleate (13.3.0).
0), pentaglyceryl monostearate (13.
0), hexaglyceryl monolaurate (14.5),
Hexaglyceryl monomyristate (13.0), decaglyceryl monolaurate (15.5), decaglyceryl monomyristate (14.0), decaglyceryl monooleate (14.5) and other polyglycerin fatty acid esters, POE (20) Sorbitan monolaurate (1
6.9), POE (20) sorbitan monopalmitate (15.6), POE (20) sorbitan monostearate (14.9), POE (20) sorbitan monooleate (15.0), POE (20 ) Polyoxyethylene sorbitan fatty acid ester such as sorbitan monoisostearate (15.0), polyethylene glycol fatty acid ester such as POE (25) monostearate (15.0), POE (9) lauryl ether (14.
5), POE (15) cetyl ether (15.5), P
OE (20) cetyl ether (17.0), POE (1
0) Polyoxyethylene such as oleyl ether (14.0), POE (15) oleyl ether (16.0), POE (20) oleyl ether (17.0), POE (20) behenyl ether (16.5) Alkyl ether, POE (20) POP (4) cetyl ether (1
6.5) and other polyoxyethylene polyoxypropylene alkyl ethers, POE (60) sorbit tetrastearate (13.0), POE (60) sorbit tetraoleate (14.0), POE (6) sorbit monolaur Polyoxyethylene sorbite fatty acid ester such as rate (15.5), POE (15) glyceryl monostearate (13.5), POE (15) glyceryl monooleate (14.5) and other polyoxyethylene glycerin fatty acid ester , POE (50) hydrogenated castor oil (13.5), POE (60) castor oil (1
4.0), POE (60) hydrogenated castor oil (14.0),
POE (80) hydrogenated castor oil (15.0), POE (1
00) Polyoxyethylene castor oil, hydrogenated castor oil such as hydrogenated castor oil (16.5), POE (10) lanolin alcohol (15.5), POE (20) lanolin alcohol (16.0), POE (40) Examples thereof include polyoxyethylene lanolin alcohol such as lanolin alcohol (17.0).

The nonionic surfactant having an HLB of 13 to 17 can be blended alone or as a mixture, and among the surfactants, polyglycerin fatty acid ester, polyoxyethylene sorbitan fatty acid ester,
When polyethylene glycol fatty acid ester, polyoxyethylene alkyl ether, or polyoxyethylene polyoxypropylene alkyl ether is blended, the aerosol composition can be made uniform without mixing with other surfactants. Is preferred because it becomes easy. Furthermore, even when a large amount of a surfactant is added, the aqueous stock solution does not thicken easily and is easily mixed with hydrocarbons, it has excellent foaming properties even at low temperatures, and it has little stickiness or skin irritation. It is preferable to blend a polyglycerin fatty acid ester and a polyoxyethylene alkyl ether from the viewpoint of obtaining a foam having excellent feeling in use.

The amount of the nonionic surfactant having an HLB of 13 to 17 is 1 to 50% by weight in the aqueous stock solution,
It is preferably from 2 to 40% by weight. If the blending amount is less than 1% by weight, the aqueous undiluted solution and the hydrocarbon are easily separated, or the aerosol composition is liable to become cloudy due to the hydrocarbon, making it difficult to obtain a transparent and uniform aerosol composition. If it exceeds, the viscosity of the aqueous undiluted solution becomes high and it becomes difficult to handle, and further, there is a tendency that problems such as deterioration of usability such as sticky feeling and strong skin irritation are caused.

Further, in order to easily make the aqueous stock solution and the hydrocarbon in a uniform state, HLB together with the nonionic surfactant having HLB of 13 to 17 is used as an auxiliary agent for further improving the foamability of the discharged product. Other than nonionic surfactants less than 13 or more than 17, cationic surfactants, anionic surfactants, amphoteric surfactants, silicone surfactants, natural surfactants, etc. A surfactant may be used.

The HLB is less than 13, or 1
Examples of the nonionic surfactant exceeding 7 include sorbitan monolaurate (8.6), sorbitan monopalmitate (6.7), and sorbitan monostearate (4.
7), sorbitan sesquistearate (4.2), sorbitan monooleate (4.3), sorbitan sesquioleate (3.7), sorbitan trioleate (1.
7) and other sorbitan fatty acid esters, glyceryl monostearate (1.5 to 10.0), glyceryl monomyristate (3.5 to 8.5) and other glycerin fatty acid esters, diglyceryl monostearate (5) ．
0), diglyceryl monooleate (5.5), diglyceryl monoisostearate (5.5) and other diglycerin fatty acid esters, triglyceryl monolaurate (12.0), triglyceryl monomyristate ( 1
2.0), triglyceryl monooleate (10.
0), triglyceryl fatty acid esters such as triglyceryl monostearate (10.0), tetraglyceryl monostearate (6.0), tetraglyceryl fatty acid esters such as tetraglyceryl monooleate (6.0), penta Glyceryl trimyristate (8.
0), pentaglyceryl fatty acid esters such as pentaglyceryl trioleate (7.0), hexaglyceryl monooleate (10.5), hexaglyceryl monostearate (10.5), hexaglyceryl tristearate (2. 5) such as hexaglycerin fatty acid esters, and decaglyceryl monostearate (1
2.0), decaglyceryl distearate (11.
0), decaglyceryl diisostearate (10.
0), decaglyceryl dioleate (10.0), decaglyceryl tristearate (7.5), decaglyceryl fatty acid esters such as decaglyceryl trioleate (7.0), and other polyglycerin fatty acid esters, POE (5) glyceryl monostearate (9.
5) such as polyoxyethylene glycerin fatty acid ester, POE (20) sorbitan tristearate (1
Polyoxyethylene such as 0.5), POE (20) sorbitan trioleate (11.0), POE (6) sorbitan monostearate (9.6), POE (6) sorbitan monooleate (10.0) Polyoxyethylene sorbit fatty acid esters such as sorbitan fatty acid esters, POE (6) sorbit tetraoleate (8.5), POE (30) sorbit tetraoleate (12.5), POE (10) monolaurate (1
2.5), POE (10) monostearate (11.
0), POE (40) monostearate (17.5),
POE (55) Monostearate (18.0), POE
(10) Polyethylene glycol fatty acid ester such as monooleate (11.0), POE (21) lauryl ether (19.0), POE (10) cetyl ether (13.5), POE (25) cetyl ether (18.
5), POE (20) stearyl ether (18.
0), POE (7) oleyl ether (10.5), P
OE (50) oleyl ether (18.0), POE
(10) Behenyl ether (10.0), POE (3
0) polyoxyethylene alkyl ether such as behenyl ether (18.0), POE (20) POP (8)
Cetyl ether (12.5), POE (30) POP
(6) Polyoxyethylene polyoxypropylene alkyl ether such as decyl tetradecyl ether (12.0), POE (40) castor oil (12.5), POE
(40) Polyoxyethylene castor oil / hydrogenated castor oil such as hydrogenated castor oil (12.5), alkyl glucosides such as lauryl glucoside (7.7), fatty acid alkylol such as coconut oil fatty acid diethanolamide (12.5) Amide, lauryl dimethylamine oxide solution (6.
Examples thereof include alkyldimethylamine oxide solutions such as 1).

The POE represents polyoxyethylene and the POP represents polyoxypropylene, and the HLB value is shown in parentheses after the compound name.

Examples of the cationic surfactant include alkylammonium salt and alkylbenzylammonium salt.

Examples of the anionic surfactants include alkyl sulfates, polyoxyethylene alkyl ether sulfates, alkyl phosphates, polyoxyethylene alkyl ether phosphates, saponified fatty acids, and α-olefin sulfonates. And so on.

Examples of the amphoteric surfactant include betaine acetate and lecithin.

As the silicone type surfactant, polyoxyethylene / methylpolysiloxane copolymer, polyoxypropylene / methylpolysiloxane copolymer,
Examples thereof include poly (oxyethylene / oxypropylene) / methylpolysiloxane copolymer.

Examples of the polymeric surfactants include polyalkylvinylpyridinium, alkylphenol polymer derivatives, styrene / maleic acid polymer derivatives, sodium alginate, tragacanth rubber and the like.

Examples of the natural surfactant include saponin, soybean phospholipid, soybean lysophospholipid solution, surfactin sodium and the like.

When the other surfactant is blended, the total amount of the nonionic surfactant having an HLB of 13 to 17 is 3 to 50% by weight, more preferably 5 to 40% by weight in the aqueous stock solution.
It is preferable that the amount be a weight%. If the blending amount is less than 3% by weight, it is difficult to obtain a transparent and uniform aerosol composition, and it is difficult to obtain auxiliary effects such as improving foamability. On the other hand, if the blending amount exceeds 50% by weight, stickiness and irritation to skin are caused. Becomes stronger, and it becomes more difficult to wash away the aerosol composition adhered to the skin, and the usability deteriorates.

Further, in the aqueous stock solution used in the present invention, the solubility of the aqueous stock solution is adjusted so that components such as the above-mentioned surfactants, hydrocarbons, and active ingredients, which are difficult to dissolve in water, can be easily mixed in the aqueous stock solution. However, it is preferable to add a polyol in order to easily obtain a uniform aerosol composition.

Examples of the polyol include ethylene glycol, propylene glycol, 1,3-butylene glycol, glycerin, xylitol, sorbitol, diethylene glycol, dipropylene glycol, triethylene glycol, polyethylene glycol, polypropylene glycol, diglycerin, triglycerin, ethylene. Examples thereof include glycol monoethyl ether, ethylene glycol monophenyl ether, diethylene glycol monoethyl ether, dipropylene glycol ethyl ether and ethylene glycol monoethyl ether acetate. Moreover, you may use it in combination of 2 or more types of the said polyol. Among them, glycerin, 1,3-butylene glycol, and glycerin are preferable because the solubility of the aqueous stock solution is easily adjusted and a uniform aerosol composition is easily obtained.
Polyols having 2 to 6 carbon atoms such as propylene glycol, ethylene glycol, dipropylene glycol and diethylene glycol are preferred.

The content of the polyol is 5 to 50% by weight in the aqueous stock solution. Furthermore, it is preferable that the lower limit is 10% by weight, particularly 20% by weight, and further 25% by weight. The upper limit is preferably 40% by weight. When the amount of polyol blended is less than 5% by weight,
Depending on the type or blending amount of the surfactant or hydrocarbon to be blended, the aqueous undiluted solution and the hydrocarbon may be separated or turbid due to the hydrocarbon, and a uniform aerosol composition cannot be obtained.
On the other hand, when the amount of the polyol blended exceeds 50% by weight, the feeling of use deteriorates, such as stickiness and deterioration of drying property.

The water to be added to the aqueous stock solution is not particularly limited, but may be purified water, ion-exchanged water, physiological saline or the like. The water is used as a solvent for blending the polyol, the surfactant, and the active ingredient to be blended according to the use and purpose of the product, etc., so that the total amount is 100% by weight by blending these ingredients. Be compounded.

The aqueous undiluted solution used in the aerosol composition of the present invention contains an active ingredient, a lower alcohol, a higher alcohol, an oily ingredient, and other ingredients in addition to the above-mentioned polyol and surfactant, depending on the use and purpose. be able to.

As the active ingredient, diethoxyethyl succinate, cleaning ingredients such as limonene, propylene glycol, glycerin, 1,3-butylene glycol, collagen, xylitol, sorbitol, hyaluronic acid,
Moisturizers such as caronic acid, sodium lactate, dl-pyrrolidone carboxylate, keratin, casein, lecithin, urea, paraoxybenzoic acid ester, sodium benzoate, phenoxyethanol, benzalkonium chloride, chlorhexidine chloride, parachlormethacresol, etc. Sterilizer / preservative, alkylaminoethyl (meth) acrylate / (meth) acrylic acid alkyl ester copolymer,
Octylamide acrylate / hydroxypropyl acrylate / butylaminoethyl methacrylate copolymer, vinylpyrrolidone / vinyl acetate copolymer, hydroxyethyl acrylate / butyl acrylate / methoxyethyl acrylate copolymer, alkanolamine acrylate, Alkyl acrylate copolymer emulsion, alkyl acrylate / styrene copolymer emulsion, hair setting agent such as polyurethane, para-aminobenzoic acid, para-aminobenzoic acid monoglycerin ester, octyl salicylate,
UV absorbers such as phenyl salicylate, isopropyl paramethoxycinnamate, octyl paramethoxycinnamate, glycine, alanine, leucine, serine, tryptophan, cystine, cysteine, methionine, aspartic acid, glutamic acid, amino acids such as arginine, retinol, Retinol palmitate, pyridoxine hydrochloride, benzyl nicotinate, nicotinamide, nicotinic acid dl-α-tocopherol, vitamin D2 (ergocasiferol), dl-α-tocopherol, acetic acid dl.
-Vitamins such as α-tocopherol, pantothenic acid, biotin, elastradiol, hormones such as ethinylestradiol, ascorbic acid, α-tocopherol, antioxidants such as dibutylhydroxytoluene, butylhydroxyanisole, peony extract,
Loofah extract, rose extract, lemon extract, aloe extract, ginger root extract, eucalyptus extract, sage extract, tea extract, seaweed extract, placenta extract, silk extract and other extract liquids, lauryl methacrylate, geranyl crolate, acetophenone myristate, Benzyl acetate, benzyl propionate, methyl benzoate,
Deodorant / deodorant such as methyl phenylacetate, anti-inflammatory analgesic such as methyl salicylate, camphor, indomethacin, piroxicam, felbinac, ketoprofen, antipruritic such as crotamiton, d-camphor, l-menthol, l
-Cooling agents such as menthol and camphor, astringents such as zinc oxide, allantoin hydroxyaluminum, tannic acid, citric acid and lactic acid, allantoin, glycyrrhetinic acid, dipotassium glycyrrhizinate, anti-inflammatory agents such as azulene, dibucaine hydrochloride, tetracaine hydrochloride , Local anesthetics such as lidocaine hydrochloride, antihistamines such as diphenhydramine, diphenhydramine hydrochloride, chlorphemiramine maleate, whitening agents such as arbutin and kojic acid,
Examples thereof include pest repellents such as N, N-diethyl-m-toluamide (diet), caprylic acid diethylamide, and dimethyl phthalate.

The above-mentioned active ingredient is 0.01 to 30 in an aqueous stock solution.
It is preferably in the range of wt%, more preferably 0.05 to 20 wt%. If it is less than 0.01% by weight, the effect of the active ingredient tends to be insufficient, and if it exceeds 30% by weight,
Hydrocarbons and oil-soluble active ingredients tend to separate or become cloudy in the aerosol composition.

The lower alcohol is used not only as a part of the solvent but also for adjusting the dissolving ability of the aqueous stock solution, improving the drying property, defoaming agent, antifreezing agent, reducing the increase in vapor pressure at high temperature, etc. Used for the purpose of. Examples thereof include ethanol, propanol, isopropanol, isobutyl alcohol, t-butyl alcohol and the like. When blending lower alcohol, 0.1-30 in the stock solution
It is preferably in the range of 0.5% by weight, more preferably 0.5-20% by weight. If it is less than 0.1% by weight, the effect of blending a lower alcohol tends to be difficult to obtain. When it exceeds 30% by weight, a uniform aerosol composition is likely to be obtained, but hydrocarbons are likely to be completely dissolved in the aerosol composition, and thus the discharged product tends to be less likely to foam.

The higher alcohol is used as a foam stabilizer for improving foamability and foam stability. When the aerosol composition is used as a hair setting agent, it is used as a setting power enhancer or a hair restyling agent. For example,
Examples thereof include lauryl alcohol, cetyl alcohol, stearyl alcohol, myristyl alcohol, oleyl alcohol, and isostearyl alcohol. When a higher alcohol is added, it is preferably 0.1 to 10% by weight, more preferably 0.5 to 5% by weight in the aqueous stock solution. If it is less than 0.1% by weight, the effect of blending a higher alcohol tends to be difficult to obtain. If it exceeds 10% by weight, bubbles tend to be sticky or the aerosol composition tends to be easily separated.

The oily component is a component for improving the feeling of use and imparting effects such as luster and water repellency. For example, silicones such as methylpolysiloxane, decamethyltetrasiloxane, octamethylcyclotetrasiloxane, methylphenylpolysiloxane, isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, cetyl lactate, ethyl acetate, phthalic acid. Ester oils such as diethyl, diethoxyethyl phthalate, diethoxyethyl succinate, hydrocarbons such as squalane, squalene, liquid paraffin, kerosene, lauric acid, myristic acid, palmitic acid,
Higher fatty acids such as stearic acid and oleic acid, beeswax, lanolin, lanolin acetate, waxes such as candelilla wax, camellia oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, linseed oil, safflower oil, jojoba oil, coconut oil Oils and fats such as. When an oily component is added, it is preferably 0.1 to 10% by weight, more preferably 0.5 to 5% by weight in the aqueous stock solution. 0.1% by weight
If it is less, the effect of blending the oily component tends to be difficult to obtain. When it exceeds 10% by weight, the foamability tends to be poor, and the composition tends to be easily separated in the aerosol composition.

Examples of the other components include polymer compounds and powders.

The above-mentioned polymer compound is used as a foam quality adjusting agent, a setting force enhancing agent, a viscosity adjusting agent, etc. for adjusting the elasticity and drying property of the foam. For example, agar, casein,
Dextrin, gelatin, pectin, starch, sodium alginate, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, nitrocellulose, crystalline cellulose, modified potato starch, polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyrrolidone, carboxyvinyl polymer, sodium polyacrylate. And so on.

The powder itself is used as a carrier, a protective agent, an adhesive, a solid lubricant or the like which acts as an active ingredient or which carries other active ingredients. Examples thereof include talc, zinc oxide, kaolin, mica, magnesium carbonate, calcium carbonate, zinc silicate, magnesium silicate, aluminum silicate, calcium silicate, silica, zeolite, ceramic powder, boron nitride and the like.

The aqueous undiluted solution used in the present invention is a nonionic surfactant having an HLB of 13 to 17, a polyol optionally blended, other surfactants, active ingredients and other components, and purified water. It is prepared by dissolving or partially dispersing in water.

In the aerosol composition of the present invention, a pressure-resistant container is filled with the above-mentioned aqueous stock solution, a valve is attached to the opening of the container, then a hydrocarbon having 3 to 6 carbon atoms is filled, and the aqueous stock solution It is prepared by mixing with a hydrocarbon and homogenizing. When the vapor pressure of the hydrocarbon is low, it may be mixed with the aqueous stock solution in advance and filled into the container in a uniform state.

The hydrocarbon acts as a foaming agent for foaming the aqueous stock solution. Examples of the hydrocarbon include propane, normal butane, isobutane, normal pentane,
Examples include isopentane, normal hexane, isohexane, and mixtures thereof.

The content of the above hydrocarbon is 0.5 to 10% by weight in the aerosol composition. Furthermore, 1 to 8% by weight
Is preferred. If the amount of the hydrocarbon compounded is less than 0.5% by weight, the foamability will deteriorate. On the other hand, when the blending amount of the hydrocarbon exceeds 10% by weight, the hydrocarbon is liable to be layer-separated from the aqueous stock solution or the aerosol composition tends to become cloudy, and a uniform aerosol composition cannot be obtained.

When a hydrocarbon having a carbon number of 4 to 6 and having a low vapor pressure is used, the pressure of the aerosol composition becomes low, and the pressure may drop at low temperature to make discharge difficult. You may mix a pressurizing agent.

Examples of the pressurizing agent include nitrogen gas, carbon dioxide gas, nitrous oxide gas, and compressed gas such as compressed air. The pressurizing agent has a product pressure of 0.3 at 25 ° C.
~ 0.8 MPa, preferably 0.4-0.7 MPa.

The aerosol composition of the present invention is characterized in that the aqueous stock solution and the hydrocarbon, which is an oily component, exist in a uniform state. In the present invention, "uniform" means that the hydrocarbon is in a layer with the aqueous stock solution. It means that the aerosol composition is not separated, and the aerosol composition does not become cloudy due to the hydrocarbon, and the permeability of the aerosol composition falls within a specific range.

The transmittance of the aerosol composition at 25 ° C. is 70 to 100%, preferably 80 to 100%. When the permeability is lower than 70%, the separation occurs depending on storage conditions. The transmittance of the aerosol composition was measured using a color difference meter CT-210 (manufactured by Minolta Camera Co., Ltd.) as a reference sample (100%) obtained by filling transparent polyethylene terephthalate with purified water only. Is.

Examples of the container filled with the aerosol composition of the present invention include a metal container such as aluminum and tin, a resin container such as polyethylene terephthalate, and a glass container such as pressure resistant glass. Note that, when the above-mentioned resin container uses a hydrocarbon having a vapor pressure of more than 0.2 MPa, the full-filled amount of the container is limited to less than 100 ml by the high pressure gas safety method, but the aerosol composition of the present invention is used. The product has a hydrocarbon vapor pressure of 0.2 MPa
Since excellent foaming properties can be obtained even if the amount of the container is less than 100 ml, it is possible to fill even the container having a full volume of 100 ml or more.

The aerosol composition of the present invention has a specific HL
Since it is a uniform aerosol composition composed of an aqueous stock solution containing a nonionic surfactant containing B and a hydrocarbon having a specific carbon number, and is a uniform aerosol composition having a specific permeability, it may be left standing for a long time. However, the aqueous undiluted solution and the hydrocarbon that is an oily component are not separated, and the operation of shaking the container before use and mixing the aerosol composition in the container is not required, and a dressing table, a washbasin, a table, a display shelf, etc. The aerosol composition can be used in a fixed or stationary state.

Applications of the aerosol composition of the present invention include cleansing agents, moisturizers, bactericidal disinfectants, anti-inflammatory analgesics, anti-itch skin products, styling agents, and the like.
It is preferably used for hair products such as treatment agents and cleaning agents.

Hereinafter, the aerosol composition of the present invention will be described in detail based on Examples, but the present invention is not limited to these Examples.

[0057]

EXAMPLES Examples 1-8 and Comparative Examples 1-4 After filling a PET container (full volume 30 ml) with 19.2 g (96% by weight) of the aqueous stock solutions shown in Table 1 and Table 2,
A valve was attached to the container opening. Then, a mixture of normal butane and isobutane (normal butane / isobutane = 50/50 (weight ratio)) was added as hydrocarbon to 0.
8 g (4% by weight) was filled, and the aqueous stock solution and hydrocarbon were mixed inside the container to obtain an aerosol composition.

[0058]

[Table 1]

[0059]

[Table 2]

Production Example 1 (Cleansing Foam) <Aqueous stock solution> (wt%) Concentrated glycerin (polyol) 7.5 Dipropylene glycol (polyol) 22.5 Lauryl glucoside (HLB7.7) 15.0 Lauryl dimethylamine oxide solution (HLB6.1) 10.0 Decaglyceryl monolaurate (HLB15.5) 7.5 Pentaglyceryl monostearate (HLB13.0) 2.5 Coconut oil fatty acid diethanolamide (HLB12.5) 2.0 Diethoxy succinate Ethyl (oil component) 2.0 Purified water 31.0 Total 100.0

Preparation Example 9 of Aerosol Composition 67.2 g (96% by weight) of the aqueous stock solution of Preparation Example 1 was subjected to PET.
It was filled in a container (fully filled 100 ml). After the valve was attached to the container opening, 2.8 g (4% by weight) of a mixture of propane, normal butane and isobutane (propane / normal butane / isobutane = 20/40/40 (weight ratio)) was filled as a hydrocarbon. did. An aerosol composition was obtained by mixing the aqueous stock solution and the hydrocarbon inside the container.

Example 10 67.2 g (96% by weight) of the aqueous stock solution of Preparation Example 1 was subjected to PET.
It was filled in a container (fully filled 100 ml). After attaching the valve to the container opening, a mixture of isopentane and isobutane as hydrocarbons (isopentane / isobutane =
75/25 (weight ratio)) was charged in an amount of 2.8 g (4% by weight). An aerosol composition was prepared by mixing an aqueous stock solution and a hydrocarbon inside the container, and nitrogen gas was further filled as a pressurizing agent to adjust the product pressure to 0.7 MPa.

Example 11 67.9 g (97% by weight) of the aqueous stock solution of Preparation Example 1 was subjected to PET.
It was filled in a container (fully filled 100 ml). After the valve was attached to the opening of the container, 2.1 g (3% by weight) of isopentane as a hydrocarbon was filled. An aerosol composition was prepared by mixing an aqueous stock solution and a hydrocarbon inside the container, and carbon dioxide gas was further filled as a pressurizing agent to adjust the product pressure to 0.7 MPa.

Production Example 2 (Cleansing Foam) <Aqueous stock solution> (wt%) 1,3-butylene glycol (polyol) 15.0 Concentrated glycerin (polyol) 15.0 Lauryl glucoside (HLB7.7) 15.0 Lauryl dimethyl Amine oxide liquid (HLB6.1) 10.0 Decaglyceryl monolaurate (HLB15.5) 7.5 Pentaglyceryl monostearate (HLB13.0) 2.5 Coconut oil fatty acid diethanolamide (HLB12.5) 2.0 Amber Diethoxyethyl acidate (oil component) 2.0 Purified water 31.0 Total 100.0

Preparation of Aerosol Composition Example 12 67.2 g (96% by weight) of the aqueous stock solution of Preparation Example 2 was PET.
It was filled in a container (fully filled 100 ml). After the valve was attached to the container opening, 2.8 g (4% by weight) of a mixture of propane, normal butane and isobutane (propane / normal butane / isobutane = 20/40/40 (weight ratio)) was filled as a hydrocarbon. did. An aerosol composition was obtained by mixing the aqueous stock solution and the hydrocarbon inside the container.

Example 13 67.2 g (96% by weight) of the aqueous stock solution of Preparation Example 2 was subjected to PET.
It was filled in a container (fully filled 100 ml). After attaching the valve to the container opening, a mixture of isopentane and isobutane as hydrocarbon (isopentane / isobutane = 7)
5/25 (weight ratio)) was charged in an amount of 2.8 g (4% by weight). An aerosol composition was prepared by mixing an aqueous stock solution and a hydrocarbon inside the container, and nitrogen gas was further filled as a pressurizing agent to adjust the product pressure to 0.7 MPa.

Example 14 67.9 g (97% by weight) of the aqueous stock solution of Preparation Example 2 was subjected to PET.
It was filled in a container (fully filled 100 ml). After the valve was attached to the opening of the container, 2.1 g (3% by weight) of isopentane as a hydrocarbon was filled. An aerosol composition was prepared by mixing an aqueous stock solution and a hydrocarbon inside the container, and carbon dioxide gas was further filled as a pressurizing agent to adjust the product pressure to 0.7 MPa.

Production Example 3 (Cleansing Foam) <Aqueous stock solution> (wt%) 1,3-butylene glycol (polyol) 10.0 Concentrated glycerin (polyol) 10.0 Lauryl glucoside (HLB7.7) 2.0 Alkyl phosphorus Acid (HLB12.5) 17.0 Decaglyceryl monolaurate (HLB15.5) 2.5 Polyglyceryl monoisostearate (HLB12.0) 2.0 Glyceryl monostearate (HLB3.0) 1.0 Decaglyceryl diisostearate (HLB12.5) HLB 10.0) 1.0 Cetanol (higher alcohol) 0.7 Diethoxyethyl succinate (oil component) 10.0 Methylparaben (active ingredient) 0.1 Purified water 43.7 Total 100.0

Preparation Example 15 of Aerosol Composition 67.9 g (97% by weight) of the aqueous stock solution of Preparation Example 3 was subjected to PET.
It was filled in a container (fully filled 100 ml). After the valve was attached to the opening of the container, 2.1 g (3% by weight) of a mixture of isobutane and normal butane (isobutane / normal butane = 50/50 (weight ratio)) was filled as a hydrocarbon. A transparent aerosol composition was prepared by mixing an aqueous stock solution and a hydrocarbon in the container, and carbon dioxide gas was further filled as a pressurizing agent to adjust the product pressure to 0.6 MPa.

[0070] Ingredients 1,3-Butylene glycol Product name: 1,3-BG (Daicel Chemical Engineering Industry (shares) Concentrated glycerin Product name: Concentrated glycerin (Kao Corporation) Dipropylene glycol Product name: Dipropylene glycol (BA SF company) Lauryl glucoside Product name: Maidor 12 (Kao Corporation) Lauryl dimethylamine oxide solution Product name: AMOGEN AOL (Daiichi Kogyo Seiyaku Co., Ltd.) (stock)) Decaglyceryl monolaurate Product name: Sunfact M12J (TAIYO CHEMICAL ( stock)) Pentaglyceryl monostearate Product name: Sunfact 5GMS-E (TAIYO CHEMICAL (stock)) Coconut oil fatty acid diethanolamide Product name: Amizole CDE (Kawaken Fine Chemical Co., Ltd.) Alkyl phosphoric acid Product name: Priory B-300D (Kao Corporation )) Polyglyceryl monoisostearate Product name: NIKKOL DGMIS (Nikko Chemicals (stock)) Glyceryl monostearate Product name: MGS-B (Nikko Chemicals Co., Ltd.) ) Decaglyceryl diisostearate Product name: Decaglyn2-IS (Nikko Chemicals (stock)) Diethoxyethyl succinate Product name: Kurodamol DES Bread Co., Ltd.) Cetanol Product name: Calcol 6870 (Kao Corporation)

Evaluation Method (Uniformity of Aerosol Composition) An aerosol product filled in a resin (polyethylene terephthalate) container was kept in a constant temperature water bath at 25 ° C. for 30 minutes, and then a color difference meter CT-2 was used.
The transmittance was measured using 10 (manufactured by Minolta Camera Co., Ltd.) and judged according to the following criteria. Furthermore, after standing at 25 ° C. for 3 days, it was visually observed in the same manner and judged according to the following criteria. The results are shown in Tables 3, 4 and 5.

◯: The transmittance was 80 to 100%, and no change was observed even after storage for 3 days. (Triangle | delta): The transmittance | permeability is 60-70%, and it isolate | separated after storage for 3 days. Poor: The transmittance was 60% or less, and the appearance was cloudy or the layers were separated, and there was no change even after storage for 3 days.

(Viscosity of Aerosol Composition) The aerosol product filled in a resin (polyethylene terephthalate) container was kept in a constant temperature water bath at 25 ° C. for 30 minutes, and then the product was laid down to visually observe the viscosity of the aerosol composition. It was judged according to the following criteria. The results are shown in Tables 3, 4 and 5.

[0074] ○: Flows immediately when laid down (liquid) Δ: Slowly flows when laid down (viscous liquid). X: Does not flow even when it is laid down sideways (solid gel).

(Foamability of Aerosol Composition) The aerosol product filled in a resin (polyethylene terephthalate) container was kept in a constant temperature water bath at 25 ° C. for 30 minutes, and then discharged to observe the foaming state. It was judged. The results are shown in Tables 3, 4 and 5.

◯: A good foam was obtained, and the foam was stable without defoaming immediately. Δ: The foam was rather coarse and the defoaming was fast. ×: No foaming.

[0077]

[Table 3]

[0078]

[Table 4]

[0079]

[Table 5]

[0080]

The aerosol composition of the present invention is a foamable aerosol composition composed of an aqueous stock solution and a hydrocarbon. However, the aqueous stock solution and the hydrocarbon are separated, or the aerosol composition becomes cloudy due to the hydrocarbon. Since it is homogeneous and is not homogeneous, the aqueous stock solution and the hydrocarbon which is an oily component are not separated even when left standing for a long time. Therefore, the operation of shaking the container before use and mixing the aerosol composition in the container is not necessary, and the aerosol composition is fixed on a vanity table, a washbasin, a table, a display shelf, or the like, and the aerosol composition is used in a stationary state. You can

─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. ⁷ Identification Code FI Theme Coat (Reference) C11D 1/72 C11D 1/72 1/722 1/722 3/18 3/18 3/20 3/20 17 / 08 17/08 F term (reference) 4C083 AC012 AC072 AC122 AC181 AC182 AC302 AC421 AC422 AC441 AC442 AC482 AC562 AC642 AC902 AD041 AD042 AD202 BB04 BB49 CC01 CC23 DD08 EE01 4H003 AA03 AC03 AC08 AC23 BA20 DA02 ED03 ED28 FA16 FA20

Claims (4)

[Claims] 1. An aqueous stock solution 90 to 9 containing 1 to 50% by weight of a nonionic surfactant having an HLB of 13 to 17.
9.5% by weight and 0.5 hydrocarbons having 3 to 6 carbon atoms
An aerosol composition comprising 10 to 10% by weight of 2
A foamable aerosol composition having a transmittance of 70 to 100% at 5 ° C. 2. The nonionic surfactant is one selected from polyglycerin fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkyl ether and polyoxyethylene polyoxypropylene alkyl ether, or a mixture thereof. The foamable aerosol composition according to claim 1. 3. The polyol is added to the aqueous stock solution in an amount of 5 to 50.
The foamable aerosol composition according to claim 1 or 2, wherein the foamable aerosol composition is contained in a weight percentage. 4. The method according to claim 1, further comprising a pressurizing agent.
Or the foamable aerosol composition according to the item 3.