JP5612914B2 - Aerosol product and injection method of the aerosol product - Google Patents

Description

  The present invention relates to an aerosol product and a method for injecting the aerosol product. More specifically, the present invention relates to an aerosol product in which a propellant spreads over a wide area and freezes in a flat shape, and a method for spraying the aerosol product.

  Patent Document 1 discloses an aerosol composition that does not cause dripping on the coated surface and can be frozen in a frozen state.

  Patent Document 2 discloses an external aerosol agent that ejects a sherbet-like foam.

Japanese Patent No. 2960445 Japanese Patent No. 2903708

  However, in the inventions described in Patent Documents 1 and 2, it was possible to form a spray on the application surface in the form of snow or a sherbet, but it did not spread over a wide range when sprayed, and the central part was convex. There is a problem that a sherbet-like lump is formed. In this case, since the periphery of the raised center portion is melted first, there is a problem that the adherence of the frozen matter is bad and the frozen matter moves to other than the affected portion before the affected portion is cooled. Further, even when the surroundings are not melted, only the central part cools the affected part excessively for a long time, which causes frostbite when used on the human body.

  The present invention has been made in view of the above problems, and the sprayed material spreads over a wide range, and further, by forming a flat icing on the application surface, while maintaining the adhesion on the application surface, and excessively It is an object of the present invention to provide an aerosol product that does not cool the coated surface and a method for spraying the aerosol product.

The aerosol product of the present invention is an aerosol product filled with an aerosol composition consisting of 5 to 50% by weight of an aqueous stock solution and 50 to 95% by weight of a liquefied gas,
The aqueous stock solution and the liquefied gas are emulsified,
The spray angle for spraying the aerosol composition is 18 to 60 degrees with the spray hole of the aerosol product as the origin,
The injection amount per unit time and unit area of the liquefied gas in the aerosol composition is 0.009 to 0.130 g / sec · cm ² .

  It is preferable that the length of the injection hole is 0.1 to 20 mm.

The aerosol product spraying method of the present invention is an aerosol product spraying method filled with an aerosol composition comprising 5 to 50% by weight of an aqueous stock solution and 50 to 95% by weight of a liquefied gas. The spray angle for spraying is 18 to 60 degrees with the spray hole of the aerosol product as the origin, and the spray amount per unit time and unit area of the liquefied gas in the aerosol composition is 0.009 to 0.130 g / It is characterized by being second · cm ² .

  According to the aerosol product and the aerosol product spraying method of the present invention, the sprayed material spreads over a wide range and forms a flat freeze on the coating surface, while maintaining adhesion on the coating surface and excessively. Further, it is possible to provide an aerosol product that does not cool the coated surface and a method for spraying the aerosol product.

It is a graph showing the relationship between the injection time of the liquefied gas per unit time and unit area at the time of injecting the aerosol product of this invention, and an injection angle.

The aerosol product of the present invention is an aerosol product filled with an aerosol composition consisting of 5 to 50% by weight of an aqueous stock solution and 50 to 95% by weight of a liquefied gas, and the aqueous stock solution and the liquefied gas are emulsified. The spray angle of the spray of the aerosol composition is 18 to 60 degrees with the spray hole of the aerosol product as the origin, and the spray amount per unit time and unit area of the liquefied gas in the aerosol composition is 0 0.009 to 0.130 g / sec · cm ² .

  The aqueous stock solution contains an emulsifier. Moreover, a water-soluble polymer, an active ingredient, alcohols, an oil component, etc. can be mix | blended as needed. The aqueous stock solution is emulsified with a liquefied gas, which will be described later, in the aerosol container, and when sprayed from the aerosol container to the outside, the aqueous stock solution is efficiently cooled by the heat of vaporization of the liquefied gas and becomes frozen.

  Examples of the emulsifier include polyoxyethylene polyoxypropylene alkyl ethers such as POE / POP cetyl ether and POE / POP decyl tetradecyl ether; polyoxyethylene / polyoxypropylene block polymers; monococonut oil fatty acid POE sorbitan, monostearic acid POE Polyoxyethylene sorbitan fatty acid esters such as sorbitan and monooleic acid POE sorbitan; Polyoxyethylene glycerin fatty acid esters such as POE glyceryl monostearate; Polyoxyethylene hydrogenated castor oil such as POE hydrogenated castor oil; POE cetyl ether, POE stearyl ether , POE oleyl ether, POE lauryl ether, POE behenyl ether, POE octyldodecyl ether, POE isose Polyoxyethylene alkyl ethers such as ether ether and POE isostearyl ether; polyethylene glycol fatty acid esters such as polyethylene glycol monostearate, hexaglyceryl monolaurate, hexaglyceryl monomyristate, pentaglyceryl monolaurate, pentaglyceryl monomyristate, monoolein Polyglycerin fatty acid esters such as pentaglyceryl acid, pentaglyceryl monostearate, decaglyceryl monolaurate, decaglyceryl monomyristate, decaglyceryl monostearate, decaglyceryl monoisostearate, decaglyceryl monooleate, decaglyceryl monolinoleate; Polyoxyethylene glycerin fatty acid esters such as POE glyceryl monooleate Polyoxyethylene sorbitan fatty acid esters such as monopalmitic acid POE sorbitan, monostearic acid POE sorbitan, monoisostearic acid POE sorbitan, monooleic acid POE sorbitan; monolauric acid POE sorbitol, tetrastearic acid POE sorbit, tetraoleic acid POE sorbit And nonionic surfactants having an HLB of 10 to 19, preferably 11 to 18, such as polyoxyethylene sorbite fatty acid ester. When the HLB is smaller than 10, the liquefied gas tends to become a continuous phase, and when the HLB is larger than 19, the liquefied gas tends to be difficult to emulsify.

  The blending amount of the emulsifier is preferably 0.1 to 10% by weight, more preferably 0.2 to 8% by weight in the aqueous stock solution. When the blending amount of the surfactant is less than 0.1% by weight, the emulsification stability of the aqueous undiluted solution and the liquefied gas is poor, and when it is more than 10% by weight, it tends to remain on the coated surface and the usability is poor. Become.

  The main solvent of the aqueous stock solution is water, which is emulsified with the liquefied gas by an emulsifier. Examples of the water include purified water, ion exchange water, physiological saline, deep sea water and the like.

  The water content is preferably 50 to 99.9% by weight, more preferably 60 to 99.5% by weight in the aqueous stock solution. When the amount of water is less than 50% by weight, it becomes difficult to emulsify with the liquefied gas. When the amount is more than 99.9% by weight, it becomes difficult to blend the required amount of liquefied gas and an emulsifier for emulsification.

  The water-soluble polymer has effects such as adjusting the viscosity of the aqueous stock solution to make the sprayed product freeze easily, and adjusting the state of the frozen matter such as hardness.

  Examples of the water-soluble polymer include gums such as xanthan gum, carrageenan, gum arabic, tragacanth gum, cationized guar gum, guar gum, gellan gum, locust bean gum; hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, sodium carboxymethyl cellulose, Cellulose polymers such as nitrocellulose and crystalline cellulose; dextran, sodium carboxymethyldextran, dextrin, pectin, starch, corn starch, wheat starch, sodium alginate, modified potato starch, sodium hyaluronate, polyvinyl alcohol, polyvinylpyrrolidone, carboxyvinyl Examples include polymers. Cellulosic polymers, particularly hydroxyethyl cellulose, are preferred from the standpoint that the retention of the liquefied gas in the aqueous stock solution is increased and the effect of easily freezing the projectile into a flat shape is easily obtained.

  When the water-soluble polymer is blended, the blending amount is preferably 0.01 to 5% by weight, more preferably 0.05 to 3% by weight in the aqueous stock solution. When the content of the water-soluble polymer is less than 0.01% by weight, the above-mentioned effect is difficult to obtain, and when it exceeds 5% by weight, the viscosity of the aqueous stock solution becomes too high and inhibits emulsification with the liquefied gas. .

  The viscosity of the aqueous stock solution is preferably 1 to 20,000 (mPa · s 20 ° C.), more preferably 3 to 10,000 (mPa · s). When the viscosity of the aqueous stock solution is smaller than 1 (mPa · s), the emulsification stability is poor, and when it is larger than 20,000 (mPa · s), it becomes difficult to emulsify with a liquefied gas having a low viscosity.

  Examples of the active ingredient include antipruritic agents such as crotamiton and d-camphor, antiphlogistic analgesics such as methyl salicylate, indomethacin, piroxicam, felbinac, and ketoprofen, oxyconazole, clotrimazole, sulconazole, bifonazole, miconazole, isconazole, Antifungal agents such as econazole, thioconazole, butenafine, and salts thereof such as hydrochloride, nitrate, acetate, astringents such as zinc oxide, allantoin hydroxyaluminum, tannic acid, citric acid, lactic acid, allantoin, glycyrrhetinic acid, Anti-inflammatory agents such as dipotassium glycyrrhizinate and azulene, local anesthetics such as dibucaine hydrochloride, tetracaine hydrochloride, lidocaine and lidocaine hydrochloride, diphenhydramine, diphenhydramine hydrochloride, male Antihistamines such as chlorpheniramine acid, paraoxybenzoic acid esters, sodium benzoate, phenoxyethanol, benzalkonium chloride, benzethonium chloride, chlorhexidine chloride and other disinfectants, disinfectants such as l-menthol and camphor, ethylene glycol, Moisturizers such as propylene glycol, glycerin, 1,3-butylene glycol, collagen, xylitol, sorbitol, hyaluronic acid, caronic acid, sodium lactate, dl-pyrrolidone carboxylate, keratin, lecithin, urea, lauric acid methacrylate, benzoic acid Deodorants such as methyl, methyl phenylacetate, geranyl crotolate, acetophenone myristate, benzyl acetate, benzyl propionate, N, N-diethyl-m-toluamide (di P), pest repellents such as caprylic acid diethylamide, phthalthrin, allethrin, permethrin, cismethrin, propulserin, resmethrin, insecticidal components such as d-phenothrin, tefluthrin, benfluthrin, sinepine, piperonyl butoxysite, octachlorodipropyl Efficacy enhancers such as ether, UV absorbers such as 2-methoxyhexyl paramethoxycinnamate, ethylhexyltriazone and oxybenzone, UV scattering agents such as zinc oxide and titanium oxide, retinol, retinol acetate, retinol palmitate, calcium pantothenate Vitamins such as ascorbic acid, sodium ascorbate, dl-α-tocopherol, tocopherol acetate, tocopherol and mixtures thereof, ascorbic acid, α-tocophero Extraction of antioxidants such as water and dibutylhydroxytoluene, 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, etc. Whitening agents such as liquid, arbutin and kojic acid; various fragrances such as natural and synthetic fragrances.

  When the active ingredient is blended, the blending amount is 0.05 to 10% by weight, preferably 0.1 to 8% by weight in the aqueous stock solution. When the amount of the active ingredient is less than 0.05% by weight, the effect of the active ingredient tends to be insufficient. When the amount is more than 10% by weight, the active ingredient concentration becomes too high. May adversely affect the human body.

  The alcohols are used as a solvent for dissolving an active ingredient that is difficult to dissolve in water, and for the purpose of adjusting ease of freezing when sprayed.

  Examples of the alcohols include 2-3 alcohols such as ethanol and isopropanol having 2 to 3 carbon atoms, ethylene glycol, propylene glycol, 1,3-butylene glycol, diethylene glycol, dipropylene glycol, glycerin and the like. Valent polyols and the like.

  The blending amount in the case of blending the alcohols is preferably 0.1 to 40% by weight, more preferably 0.3 to 30% by weight in the aqueous stock solution. When the blending amount of the alcohol is less than 0.1% by weight, it is difficult to obtain the above-mentioned effect. Become.

  The oil component is used for the purpose of adjusting the emulsified state of the aqueous stock solution and the liquefied gas, improving the feeling of use such as improving the slip and gloss.

  Examples of the oil include hydrocarbon oils such as liquid paraffin, squalene, squalane and isoparaffin; diisopropyl adipate, isopropyl myristate, isopropyl palmitate, cetyl octoate, octyldodecyl myristate, butyl stearate, myristyl myristate, Ester oil such as decyl oleate, cetyl lactate, isocetyl stearate, cetostearyl alcohol, diisobutyl adipate, diisopropyl sebacate, diethoxyethyl succinate, diisostearyl malate, methyl polysiloxane, octamethylcyclotetrasiloxane, deca Methylcyclopentasiloxane, dodecamethylcyclohexasiloxane, methylcyclopolysiloxane, tetrahydrotetramethylcyclotetrasiloxane , Octamethyltrisiloxane, decamethyltetrasiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane and other silicone oils, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid and other fatty acids , Lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, lanolin alcohol and other higher alcohols, avocado oil, macadamia nut oil, fats and oils such as shea fat, olive oil and camellia oil, waxes such as beeswax and lanolin wax It is done.

  When the oil component is blended, the blending amount is preferably 0.1 to 20% by weight, more preferably 0.5 to 10% by weight in the aqueous stock solution. When the oil content is less than 0.1% by weight, it is difficult to obtain the effect of blending the oil content. When the oil content is more than 20% by weight, the propellant is less likely to freeze, and the drying property is deteriorated. Decreases.

  The aqueous stock solution used in the present invention is prepared by dissolving an emulsifier, a water-soluble polymer blended as necessary, in water or alcohols. The aqueous stock solution may be emulsified with oil as needed, or a powder described later may be dispersed.

  The powder is used as an emulsification aid, for example, facilitating emulsification of an aqueous stock solution and a liquefied gas, and improving emulsification stability.

  Examples of the powder include silica prepared by a dry method, silica prepared by a wet method, talc, zinc oxide, kaolin, mica, magnesium carbonate, calcium carbonate, zinc silicate, magnesium silicate, aluminum silicate, and silicic acid. Examples include calcium, zeolite, ceramic powder, and boron nitride.

  The blending amount of the powder is 0.01 to 5% by weight in the aqueous stock solution, preferably 0.03 to 3% by weight, and more preferably 0.05 to 2% by weight. When the blending amount of the powder is out of 0.01 to 5% by weight, it becomes difficult to obtain an emulsification promoting effect.

  The amount of the aqueous stock solution is 5 to 50% by weight in the aerosol composition, preferably 10 to 45% by weight, and more preferably 15 to 40% by weight. When the blending amount of the aqueous stock solution deviates from 5 to 50% by weight, there is a problem that it is difficult to emulsify with the liquefied gas and the propellant is difficult to freeze.

  The liquefied gas is a liquid in an aerosol container and is emulsified with an aqueous stock solution to form an emulsion.

  Examples of the liquefied gas include propane, normal butane, isobutane, and mixtures thereof such as liquefied petroleum gas, dimethyl ether, chlorofluorocarbons, and mixtures thereof. Moreover, you may mix | blend normal pentane and isopentane in liquefied gas. In addition, when mixed liquefied gas of liquefied petroleum gas and dimethyl ether is used as the liquefied gas, it is possible to prevent icing matter from adhering to the spray holes and disturbing the spray pattern.

  The blending amount of the liquefied gas is 50 to 95% by weight in the aerosol composition, preferably 55 to 90% by weight, and more preferably 60 to 85% by weight. When the blending amount of the liquefied gas deviates from 50 to 95% by weight, there is a problem that it is difficult to emulsify with the aqueous undiluted solution and the propellant is difficult to freeze.

  The aerosol composition is manufactured by filling a pressure resistant container with an aqueous stock solution and a liquefied gas, fixing an aerosol valve to the pressure resistant container, sealing the aerosol container, and emulsifying the aqueous stock solution and the liquefied gas in the aerosol container. Can do. The liquefied gas may be filled through the aerosol valve after the aerosol valve is fixed, or may be filled by undercup filling immediately before the aerosol valve is fixed. Furthermore, it becomes an aerosol product by attaching an injection member to the aerosol valve.

  The aerosol product of the present invention has a specific range of the injection angle at which the above-mentioned aerosol composition is injected, and the injection amount per unit time and unit area of the liquefied gas in the aerosol composition is in a specific range. Objects spread over a wide area and freeze in a flat shape.

The injection angle is 18 to 60 degrees with the injection hole of the injection member as the origin. More preferably, the spray angle is 25 to 55 degrees. When the spray angle is less than 18 degrees, the spray is relatively straight forward, and there is a problem that the projectile tends to be raised convex ice in the center, and the spray angle exceeds 60 degrees. As a result, the spray is overspread over a wide range, and there is a problem that the heat of vaporization of the liquefied gas is dispersed and the sprayed product is difficult to freeze.

Moreover, the injection amount per unit time and unit area of the liquefied gas in the aerosol composition is 0.009 to 0.130 g / sec · cm ² . When the injection amount is less than 0.009 g / sec · cm ² , there is a problem that the cooling ability to freeze the aqueous stock solution is insufficient and the injection is difficult to freeze, and the injection amount is 0.130 g / sec · cm ² . When exceeding, there exists a problem that the iced thing which raised the center part is easy to be obtained. The injection amount per unit time and unit area of the liquefied gas was measured by measuring the injection amount (g / sec) of the aerosol composition per second, and the blending ratio (wt%) of the liquefied gas and the injection hole It is a value calculated from the area (cm ² ) of the ejected matter at a position of an appropriate injection distance of 5 to 15 cm.

  The injection hole of the injection member preferably has a diameter of 0.1 to 1.0 mm. When the diameter is less than 0.1 mm, the injection angle tends to be small, and when it exceeds 1.0 mm, the amount of liquefied gas injected per unit time and unit area tends to increase. When the passage to the injection hole has a straight shape, the diameter of the injection hole is particularly preferably 0.3 to 0.5 mm. Moreover, when the mechanical breakup mechanism which injects after turning an aerosol composition just before an injection hole is provided, the diameter of an injection hole has especially preferable 0.2-0.6 mm.

  0.1-20 mm is preferable and, as for the length of the injection hole of the said injection member, 0.2-7 mm is especially preferable. When the length of the injection hole is less than 0.1 mm, the injection angle tends to increase, and when it exceeds 20 mm, the injection angle tends to decrease. In addition, a part of the spray hole freezes and the spread of spray (spray pattern) tends to be disturbed.

  The aerosol valve is not particularly limited, but the diameter of the stem hole is 0.3 to 0.5 mm in order to facilitate the injection of the above-mentioned liquefied gas per unit time and per unit area. It is preferable to use a tap hole having a diameter of 1.0 to 2.0 mm and not having a vapor tap hole. A plurality of stem holes may be provided.

When the aerosol composition is sprayed, the sprayed material forms iced matter. Area of frost obtained upon injecting the aerosol composition of the present invention is particularly preferable that it is 16～90Cm ² is preferably 17cm ² ~85cm ^2. Here, the area of the frozen object is that of the frozen object formed on the object when 3 g is injected within the range of 5 to 15 cm, which is the appropriate injection distance from the injection hole to the object (for example, paper towel or handkerchief). It is an area. If the area of icing is smaller than 16 cm ² , a flat icing may not be obtained, and the center part may rise to a convex shape to form a sherbet-like lump. If it is larger than 90 cm ² , icing is formed. Hateful. Moreover, since it sprays over a wide range, there is a tendency for the amount of spraying per unit area to be small and to melt immediately on the coating surface.

  Next, the aerosol product injection method of the present invention will be described.

The aerosol product spraying method of the present invention is an aerosol product spraying method filled with an aerosol composition comprising 5 to 50% by weight of an aqueous stock solution and 50 to 95% by weight of a liquefied gas. The spray angle is 18 to 60 degrees with the spray hole of the aerosol product as the origin, and the spray amount per unit time and unit area of the liquefied gas in the aerosol composition is 0.009 to 0.130 g / second · wherein the injecting cm ² and so as.

  The components constituting the aerosol product, the injection angle of the injection, and the injection amount are the same as described above.

  EXAMPLES Hereinafter, although an Example demonstrates this invention more concretely, this invention is not limited to these.

  The evaluation method is shown below. In the evaluation by the following evaluation method, the aerosol product filled with the aerosol composition is held in a constant temperature water bath set at 25 ° C. for 30 minutes, and then the aerosol product is separated from the object by 5 cm or 15 cm as an appropriate injection distance. This is the result of spraying from the place.

1. State of spraying ◎: Uniform and freezing flat ○: Slightly rising in the center but freezing flat △ 1: Freezing flat, but thinly melts immediately △ 2: Centering rises and freezes ×: No freezing Injection angle Angle of the injection measured with the injection hole as the origin ◎: 26 to 60 degrees ○: 18 to 25 degrees ×: Less than 18 degrees or more than 60 degrees Injection amount of liquefied gas per unit time and unit area ○: 0.009 to 0.130 g / sec · cm ² )
X: Less than 0.009 or more than 0.130 (g / sec · cm ² )

Examples 1 and 2 and Comparative Example 1
The following aqueous stock solution 1 was prepared, and 25 g (25 wt%) of the aqueous stock solution 1 was filled in a pressure vessel made of aluminum. An aerosol valve was attached to the pressure vessel, and 75 g (75 wt%) of liquefied petroleum gas (* 1) was filled as the liquefied gas. Next, the aerosol container was shaken up and down to emulsify the aqueous stock solution and the liquefied gas to produce an aerosol composition. The liquid density of the aqueous stock solution 1 was 1.00 g / mL. The types shown in Table 1 were used for the type of injection member, the hole diameter, and the length of the injection hole. The evaluation results are shown in Table 2. Further, as FIG. 1, the injection amount of liquefied gas per unit time and unit area is plotted on the horizontal axis, and the injection angle is plotted on the vertical axis. A black circle represents an embodiment and is denoted by reference numeral 1. In addition, the comparative example mentioned later is represented by a white triangle, and is attached with reference numeral 2.
<Aqueous stock solution 1>
POE (20) POP (8) Cetyl ether (* 2) 0.5
Talc (* 3) 0.5
Purified water 99.0
Total 100.0 (wt%)
* 1: Pressure at 25 ° C is 0.2 MPa
* 2: NIKKOL PBC-44 (product name), manufactured by Nikko Chemicals * 3: Crown talc PP (product name), manufactured by Matsumura Sangyo Co., Ltd.

Examples 3 and 4 and Comparative Example 2
An aerosol composition was produced in the same manner as in Example 1 except that liquefied petroleum gas (* 4) was used as the liquefied gas. The types shown in Table 1 were used for the type of injection member, the hole diameter, and the length of the injection hole. The evaluation results are shown in Table 2 and FIG.
* 4: Pressure at 25 ° C is 0.3 MPa

Examples 5-6
An aerosol composition was produced in the same manner as in Example 1 except that a mixed liquefied gas (* 5) of 70% by weight of liquefied petroleum gas (* 1) and 30% by weight of dimethyl ether was used as the liquefied gas. The types shown in Table 1 were used for the type of injection member, the hole diameter, and the length of the injection hole. The evaluation results are shown in Table 2 and FIG.
* 5: Pressure at 25 ° C is 0.3 MPa

Examples 7 to 9 and Comparative Example 3
The following aqueous stock solution 2 was prepared, and 25 g (25 wt%) of the aqueous stock solution 2 was filled in an aluminum pressure-resistant container. An aerosol valve was attached to the pressure vessel, and 75 g (75% by weight) of liquefied gas (* 1) was filled. Next, the aerosol container was shaken up and down to emulsify the aqueous stock solution and the liquefied gas to produce an aerosol composition. The liquid density of the aqueous stock solution 2 was 1.00 g / mL. The types shown in Table 1 were used for the type of injection member, the hole diameter, and the length of the injection hole. The evaluation results are shown in Table 2 and FIG.
<Aqueous stock solution 2>
POE (20) POP (8) Cetyl ether (* 2) 0.5
Talc (* 3) 0.5
Hydroxyethyl cellulose (* 6) 0.1
Purified water 98.9
Total 100.0 (wt%)
* 6: Daicel HEC-SE850 (trade name), manufactured by Daicel Chemical Industries

Example 10
An aerosol product was produced in the same manner as in Example 7 except that 40% by weight of aqueous stock solution 2 and 60% by weight of liquefied petroleum gas (* 1) were used. The types shown in Table 1 were used for the type of injection member, the hole diameter, and the length of the injection hole. The evaluation results are shown in Table 2 and FIG.

Example 11
An aerosol product was produced in the same manner as in Example 7 except that 20% by weight of aqueous stock solution 2 and 80% by weight of liquefied petroleum gas (* 1) were used. The types shown in Table 1 were used for the type of injection member, the hole diameter, and the length of the injection hole. The evaluation results are shown in Table 2 and FIG.

Example 12
An aerosol product was produced in the same manner as in Example 7 except that 15% by weight of aqueous stock solution 2 and 85% by weight of liquefied petroleum gas (* 1) were used. The types shown in Table 1 were used for the type of injection member, the hole diameter, and the length of the injection hole. The evaluation results are shown in Table 2 and FIG.

Comparative Example 4
An aerosol product was produced in the same manner as in Example 7 except that 55% by weight of aqueous stock solution 2 and 45% by weight of liquefied petroleum gas (* 1) were used. The types shown in Table 1 were used for the type of injection member, the hole diameter, and the length of the injection hole. The evaluation results are shown in Table 2 and FIG.

Comparative Example 5
An aerosol product was produced in the same manner as in Example 7 except that 3% by weight of aqueous stock solution 2 and 97% by weight of liquefied petroleum gas (* 1) were used. The types shown in Table 1 were used for the type of injection member, the hole diameter, and the length of the injection hole. The evaluation results are shown in Table 2 and FIG.

Examples 13-18 and Comparative Examples 6-7
An aerosol composition was produced in the same manner as in Example 7 except that liquefied petroleum gas (* 4) was used as the liquefied gas. The types shown in Table 1 were used for the type of injection member, the hole diameter, and the length of the injection hole. The evaluation results are shown in Table 2 and FIG.

Examples 19-22
An aerosol composition was produced in the same manner as in Example 7 except that liquefied petroleum gas (* 7) was used as the liquefied gas. The types shown in Table 1 were used for the type of injection member, the hole diameter, and the length of the injection hole. The evaluation results are shown in Table 2 and FIG.
* 7: The pressure at 25 ° C is 0.45 MPa.

Examples 23 to 31 and Comparative Examples 8 to 10
An aerosol composition was produced in the same manner as in Example 7 except that liquefied petroleum gas (* 5) was used as the liquefied gas. The types shown in Table 1 were used for the type of injection member, the hole diameter, and the length of the injection hole. The evaluation results are shown in Table 2 and FIG. In addition, about the comparative example 10, since the injection quantity of the liquefied gas per unit time and unit area became a larger value than the other Example and comparative example, it abbreviate | omitted in FIG.

Example 32
An aerosol product was produced in the same manner as in Example 7 except that 15% by weight of aqueous stock solution 2 and 85% by weight of liquefied petroleum gas (* 5) were used. The types shown in Table 1 were used for the type of injection member, the hole diameter, and the length of the injection hole. The evaluation results are shown in Table 2 and FIG.

Example 33
An aerosol product was produced in the same manner as in Example 7, except that 50% by weight of aqueous stock solution 2 and 50% by weight of liquefied petroleum gas (* 5) were used. The types shown in Table 1 were used for the type of injection member, the hole diameter, and the length of the injection hole. The evaluation results are shown in Table 2 and FIG.

ＬＰＧ：液化石油ガス
ＤＭＥ：ジメチルエーテル
ＳＴ：ストレート形状の噴射孔
ＭＢ：メカニカルブレークアップ機構付き

LPG: Liquefied petroleum gas DME: Dimethyl ether ST: Straight injection hole MB: With mechanical breakup mechanism

1 Aerosol Composition of Example 2 Aerosol Composition of Comparative Example

Claims (3)

An aerosol composition composed of 5 to 50% by weight of an aqueous stock solution and 50 to 95% by weight of a liquefied gas is filled , and a flat frozen object is formed on the object by injecting the aerosol composition onto the object. is an aerosol product that,
The aqueous stock solution and the liquefied gas are emulsified,
The spray angle of the spray of the aerosol composition from a distance of 5 to 15 cm away from the object at 25 ° C. is 18 to 60 degrees with the spray hole of the aerosol product as the origin,
Injection amount per unit time and per unit area of the liquefied gas in the aerosol composition from a distance of 5~15cm from the object at 25 ° C. is, 0.009~0.130g / sec · cm ² der Ri ,
The diameter of the injection hole is 0.3 to 0.5 mm when the passage to the injection hole has a straight shape, and is 0.2 when a mechanical breakup mechanism is provided immediately before the injection hole. ~ 0.6mm,
Is 0.1~20mm der length Ru aerosol products of the injection hole. The aerosol product according to claim 1 , wherein the aerosol composition comprises a cellulosic polymer . An aerosol composition composed of 5 to 50% by weight of an aqueous stock solution and 50 to 95% by weight of a liquefied gas is filled , and a flat frozen object is formed on the object by injecting the aerosol composition onto the object. is a method of injection aerosol products,
The diameter of the injection hole of the aerosol product is 0.3 to 0.5 mm when the passage to the injection hole has a straight shape, and when a mechanical breakup mechanism is provided immediately before the injection hole. 0.2-0.6mm,
The injection hole has a length of 0.1 to 20 mm,
Injection angle of the injection of the aerosol composition from a distance of 5~15cm from the object at 25 ° C. is a 18 to 60 degrees the injection hole of the aerosol product as an origin,
The injection amount per unit time and unit area of the liquefied gas in the aerosol composition from a distance of 5 to 15 cm away from the object at 25 ° C. is 0.009 to 0.130 g / sec · cm ^2. A method for spraying aerosol products to be sprayed.

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