Post-foaming gel spray composition

Abstract

To provide a post-foaming gel spray composition which can be sprayed in a mist state, forms a thin film gel (gel-like film) on an adhering surface, then foams and can be easily rinsed off.SOLUTION: There is provided a post-foaming gel spray composition which comprises an aqueous stock solution, a lipophilic solvent having a boiling point of 15 to 50°C and a dimethyl ether, wherein the aqueous stock solution contains an associative thickener, a thickener other than the associative thickener, a surfactant and water.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a post-foaming gel spray composition. More specifically, the present invention relates to a post-foaming gel spray composition that can be sprayed in a mist form, forms a thin film-like gel (gel-like film) on the adhesion surface, then foams, and can be easily washed away.

Background Art

[0002] Conventionally, gel spray compositions that adhere in a gel form on the application surface are known. Since the gel-like discharge is highly viscous, it can adhere to the application surface for a long time. However, when the gel is formed three-dimensionally, it is likely to drip. Therefore, gel spray compositions that can be sprayed in a mist form and thicken on the application surface to become gel-like are known (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The aerosol composition for gel spray of Patent Document 1 is sprayed in a mist form and becomes gel-like on the adhesion surface. However, the gel described in Patent Document 1 is difficult to wash away from the adhesion surface.

[0005] The present invention has been made in view of such conventional problems, and an object thereof is to provide a post-foaming gel spray composition that can be sprayed in a mist form, forms a thin film-like gel (gel-like film) on the adhesion surface, then foams, and can be easily washed away.

Means for Solving the Problems

[0006] The present invention, which solves the above problems, mainly includes the following configuration.

[0007] (1) A post-foaming gel spray composition comprising an aqueous stock solution, a lipophilic solvent having a boiling point of 15 to 50°C, and dimethyl ether, wherein the aqueous stock solution comprises an associated thickener, a thickener other than the associated thickener, a surfactant, and water.

[0008] With this configuration, the post-foaming gel spray composition can be sprayed in a mist. The mist of the post-foaming gel spray composition does not easily scatter on the surface it is applied to, and forms a thin film of gel (a gel-like movie). Therefore, the gel movie does not easily drip off the surface, and the active ingredients can be easily applied to the surface as needed. Furthermore, the gel movie then foams. Therefore, the foamed gel can, for example, lift dirt from the surface it is applied to, and can also be easily washed away.

[0009] (2) The aqueous stock solution is the post-foaming gel spray composition according to (1), comprising alcohols.

[0010] With this configuration, the post-foaming gel spray composition is easily sprayed in a mist form. In addition, the post-foaming gel spray composition exhibits slower foaming on the application surface, making it easier to maintain a thin film gel state.

[0011] (3) The aqueous stock is a post-foaming gel spray composition according to (1) or (2), comprising an oil.

[0012] With this configuration, the post-foaming gel spray composition is less prone to foaming, allowing the oil to remain in contact with the surface for a longer period. Therefore, the post-foaming gel spray composition is more likely to achieve the desired effects of incorporating oil (such as adjusting foam hardness or removing oily stains).

[0013] (4) The aqueous stock solution is a post-foaming gel spray composition according to (1) or (2), wherein the aqueous stock contains 50 to 97% by mass of water.

[0014] With this configuration, the post-foaming gel spray composition is easily sprayed in a mist-like manner and readily forms a thin film of gel on the surface it is applied to. Furthermore, the post-foaming gel spray composition is prone to post-foaming. [Effects of the Invention]

[0015] According to the present invention, it is possible to provide a post-foaming gel spray composition that can be sprayed in a mist form, which forms a thin film of gel (gel-like film) on the surface to which it is applied, then foams, and can be easily washed away. [Modes for carrying out the invention]

[0016] <Post-foaming gel spray composition> One embodiment of the present invention provides a post-foaming gel spray composition comprising an aqueous stock, a lipophilic solvent with a boiling point of 15-50°C, and dimethyl ether. The aqueous stock comprises an associated thickener, a thickener other than the associated thickener, a surfactant, and water. Each of these components is described below.

[0017] (aqueous stock solution) The aqueous concentrate contains an associated thickener, a thickener other than the associated thickener, a surfactant, and water.

[0018] • Associative thickeners Associative thickeners thicken by dispersing and neutralizing in water, increasing the viscosity of the aqueous concentrate to form a gel. When sprayed, they tend to become mist-like, allowing the aqueous concentrate to adhere to the surface as a thin film gel, thus ensuring good adhesion.

[0019] The associated thickener is not particularly limited. For example, associated thickeners include crosslinked polyacrylic acid such as carboxyvinyl polymer, (acrylic acid / itaconic acid steareth) copolymer, (acrylic acid / itaconic acid ceteth) copolymer, copolymers of acrylic acid and itaconic acid esters such as acrylic acid / aminoacrylate / C10-30 alkylPEG-20 itaconic acid) copolymer, and methoxyethylene maleic anhydride copolymer. Among these, carboxyvinyl polymer and (acrylic acrylates / itaconic acid steareth) copolymer are preferred as associated thickeners because they are easily sprayed in a mist form.

[0020] The content of the aggregate thickener is preferably 0.1% by mass or more, and more preferably 0.15% by mass or more, in terms of solid content in the aqueous stock solution. Furthermore, the content of the aggregate thickener is preferably 2.0% by mass or less, and more preferably 1.5% by mass or less, in terms of solid content in the aqueous stock solution. When the content of the aggregate thickener is within the above range, the aqueous stock solution is easily sprayed in a mist-like manner and is likely to begin foaming after adhering to the surface.

[0021] Furthermore, it is preferable that the aqueous stock solution contains a pH adjuster so that it is easily thickened by the association-type thickening agent. The pH adjuster is not particularly limited. For example, pH adjusters include organic alkalis such as triethanolamine (TEA), 2-amino-2-methyl-1-propanol (AMP), diethanolamine (DEA), monoethanolamine (MEA), diisopropanolamine (DIPA), and 2-amino-2-methyl-1,3-propanediol (AMPD); inorganic alkalis such as potassium hydroxide, sodium hydroxide, and ammonium hydroxide; organic acids such as citric acid, glycolic acid, lactic acid, and phosphoric acid; and inorganic acids such as hydrochloric acid.

[0022] The content of the pH adjuster is not particularly limited. For example, the content of the pH adjuster is preferably 0.1% by mass or more, more preferably 0.15% by mass or more in the aqueous stock solution. Also, the content of the pH adjuster is preferably 5.0% by mass or less, more preferably 4.5% by mass or less in the aqueous stock solution.

[0023] · Thickeners other than associative thickeners Thickeners other than associative thickeners are used for purposes such as accelerating the viscosity recovery and improving the adhesiveness when the aqueous stock solution adheres to the adhesion surface.

[0024] Thickeners other than associative thickeners are not particularly limited. For example, thickeners other than associative thickeners include cellulose-based polymers such as cellulose nanofibers, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, sodium carboxymethylcellulose, gum substances such as xanthan gum, carrageenan, gum arabic, tragacanth gum, cationized guar gum, guar gum, gellan gum, (PEG-240 / decyltetradeceth-20 / HDI) copolymer, polyurethane, dextran, sodium carboxymethyldextran, dextrin, pectin, sodium alginate, sodium hyaluronate, polyvinyl alcohol, etc.

[0025] The content of the thickener other than the associative thickener is not particularly limited. For example, the content of the thickener other than the associative thickener is preferably 0.01% by mass or more, more preferably 0.05% by mass or more in the aqueous stock solution. Also, the content of the thickener other than the associative thickener is preferably 5% by mass or less, more preferably 3% by mass or less in the aqueous stock solution. When the content of the thickener other than the associative thickener is within the above range, the post-foaming gel spray composition has a fast viscosity recovery, is easy to adhere, and the hardness of the foam is easily adjusted.

[0026] (Surfactant) Surfactants are added to adjust post-foaming properties and to emulsify aqueous stock solutions with lipophilic solvents with a boiling point of 15-50°C and dimethyl ether. Furthermore, surfactants are also included as active ingredients when the post-foaming gel spray composition is used as a cleaning agent.

[0027] Surfactants are not particularly limited. Examples include nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, and silicone-based surfactants.

[0028] Nonionic surfactants are not particularly limited. Examples of nonionic surfactants include lauryl glucoside, (caprylyl / capryl) glucoside, cocamide DEA, polyoxyethylene alkyl ether, polyglycerin fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene polyoxypropylene alkyl ether, polyethylene glycol fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ether fatty acid ester, polyoxyethylene sorbitan fatty acid ester, and polyoxyethylene sorbitan fatty acid ester.

[0029] Anionic surfactants are not particularly limited. For example, anionic surfactants include N-coconut oil fatty acid acyl-L-glutamate triethanolamine, N-coconut oil fatty acid acyl-L-glutamate potassium (cocoyl glutamate potassium), N-coconut oil fatty acid acyl-L-glutamate sodium, N-lauroyl-L-glutamate triethanolamine, N-lauroyl-L-glutamate potassium, N-lauroyl-L-glutamate sodium, N-myristoyl-L-glutamate potassium, N-myristoyl-L-glutamate These include amino acid soaps, fatty acid soaps, alkyl sulfates, polyoxyethylene alkyl ether sulfates, alkyl phosphates, polyoxyethylene alkyl ether phosphates, etc., such as sodium stearoyl-L-glutamate and N-stearoyl-L-glutamate sodium N-acyl glutamates, N-acylglycine salts such as N-coconut oil fatty acid acylglycine potassium and N-coconut oil fatty acid acylglycine sodium, and N-acylalanine salts such as N-coconut oil fatty acid acyl-DL-alaninetriethanolamine.

[0030] Cationic surfactants are not particularly limited. For example, cationic surfactants include alkylammonium salts and polyoxyethylene alkylamines.

[0031] Amphoteric surfactants are not particularly limited. For example, amphoteric surfactants include imidazolines such as sodium lauroamphoacetate, amidebetaines such as sodium cocoamphoacetate, alkylbetaines, amideamine oxides, amidesulfobetaines, fatty acid amidopropyl betaines, and carbobetines.

[0032] The surfactant content is not particularly limited. For example, the surfactant content is preferably 0.1% by mass or more, and more preferably 0.5% by mass or more, in the aqueous stock solution. Furthermore, the surfactant content is preferably 30% by mass or less, and more preferably 25% by mass or less, in the aqueous stock solution. When the surfactant content is within the above range, the post-foaming gel spray composition tends to foam after forming a gel-like film.

[0033] ·water Water is added as the main solvent in the aqueous stock solution. The viscosity of the water is increased by the association type thickener and other thickeners, adjusting the aqueous stock solution to the viscosity described later.

[0034] The type of water is not particularly limited. For example, the water could be purified water, deionized water, physiological saline, or deep-sea water.

[0035] The water content is not particularly limited. For example, the water content is preferably 50% by mass or more, and more preferably 60% by mass or more, in the aqueous stock solution. Furthermore, the water content is preferably 97% by mass or less, and more preferably 95% by mass or less, in the aqueous stock solution. When the water content is within the above range, the aqueous stock solution is easily sprayed in a mist-like manner and easily foams after application on the surface.

[0036] ·Optional ingredients In addition to the thickeners, surfactants, and water mentioned above, the aqueous concentrate may contain optional components such as alcohols, oils, active ingredients, and powders as appropriate.

[0037] The aqueous concentrate of this embodiment preferably contains alcohols. This makes the post-foaming gel spray composition easier to spray in a mist form. In addition, the post-foaming gel spray composition foams more slowly on the surface it is applied to, making it easier to maintain a thin film gel state.

[0038] Alcohols are not particularly limited. For example, alcohols include monohydric alcohols and polyhydric alcohols.

[0039] Monohydric alcohols are not particularly limited. For example, monohydric alcohols include ethanol and isopropanol.

[0040] Polyhydric alcohols are not particularly limited. Examples include propylene glycol, 1,3-butylene glycol, hexylene glycol, dipropylene glycol, glycerin, and diglycerin.

[0041] When alcohols are included, the amount of alcohol is not particularly limited. For example, the amount of alcohol is preferably 1% by mass or more, and more preferably 3% by mass or more, in the aqueous stock solution. Furthermore, the amount of alcohol is preferably 55% by mass or less, and more preferably 45% by mass or less, in the aqueous stock solution. When the amount of alcohol is within the above range, the post-foaming gel spray composition is easily sprayed in a mist form. In addition, the post-foaming gel spray composition foams slowly on the surface it is applied to, making it easier to maintain a thin film gel state.

[0042] When a monohydric alcohol is included, the amount of monohydric alcohol is not particularly limited. For example, the amount of monohydric alcohol is preferably 0.5% by mass or more, and more preferably 1% by mass or more, in the aqueous stock solution. Furthermore, the amount of monohydric alcohol is preferably 50% by mass or less, and more preferably 38% by mass or less, in the aqueous stock solution. When the amount of monohydric alcohol is within the above range, the post-foaming gel spray composition is easily sprayed in a mist-like manner. In addition, the post-foaming gel spray composition exhibits slower foaming on the application surface, making it easier to maintain a thin film gel state.

[0043] When polyhydric alcohols are included, the polyhydric alcohol content is not particularly limited. For example, the polyhydric alcohol content is preferably 5% by mass or more, and more preferably 7% by mass or more, in the aqueous stock solution. Furthermore, the polyhydric alcohol content is preferably 54.5% by mass or less, and more preferably 44% by mass or less, in the aqueous stock solution. When the polyhydric alcohol content is within the above range, the post-foaming gel spray composition is easily sprayed in a mist-like manner. In addition, the post-foaming gel spray composition exhibits slower foaming on the application surface, making it easier to maintain a thin film gel state.

[0044] The aqueous concentrate of this embodiment preferably contains an oil. This makes it easier to suppress foaming in the post-foaming gel spray composition, allowing the oil to remain in contact with the surface for a longer period. Therefore, the post-foaming gel spray composition easily achieves the effects of incorporating an oil (such as adjusting the hardness of the foam or removing oily stains).

[0045] The oils are not particularly limited. For example, oils include ester oils such as isopropyl myristate, isopropyl palmitate, diisopropyl adipate, caprylic / capric triglyceride, diethoxyethyl succinate, methylpentanediol dieopentanoate, and neopentyl glycol dicaprate; hydrocarbon oils such as limonene, liquid paraffin, kerosene, squalene, squalane, and isoparaffin; oils and fats such as avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, sesame oil, castor oil, linseed oil, safflower oil, jojoba oil, malt oil, coconut oil, and palm oil; and silicone oils such as methylpolysiloxane, methylphenylpolysiloxane, and methylpolycyclosiloxane.

[0046] The oil content is not particularly limited. For example, the oil content is preferably 0.01% by mass or more, and more preferably 0.05% by mass or more, in the aqueous stock solution. Furthermore, the oil content is preferably 10% by mass or less, and more preferably 8% by mass or less, in the aqueous stock solution. When the oil content is within the above range, the effects of incorporating the oil (such as adjusting the hardness of the foam or removing oily stains) are easily obtained.

[0047] The active ingredients can be appropriately selected according to the use and purpose of the post-foaming gel spray composition. For example, the active ingredients may include various fragrances such as natural fragrances and synthetic fragrances, preservatives such as parahydroxybenzoic acid esters, sodium benzoate, potassium sorbate, and phenoxyethanol, disinfectants such as benzalkonium chloride, benzethonium chloride, chlorhexidine chloride, and parachlormethacresol, deodorants such as methacrylate lauryl acid, methyl benzoate, methyl phenylacetate, geranyl chloride, acetophenone myristate, benzyl acetate, benzyl propionate, and green tea extract, insecticides such as phenopropatrin, transfluthrin, etofenprox, permethrin, metofluthrin, and phenothrin, rust inhibitors such as sodium nitrite and trisodium citrate, and N,Insect repellents such as N-diethyl-m-toluamide (DEET) and benzyl benzoate, cooling agents such as l-menthol, camphor, and peppermint oil, vitamins such as retinol, retinyl acetate, retinyl palmitate, calcium pantothenate, magnesium ascorbate phosphate, sodium ascorbate, dl-α-tocopherol, tocopherol acetate, tocopherol, tocopherol nicotinate, dibenzoylthiamine, riboflavin and mixtures thereof, and ascorbyl Antioxidants such as bic acid, α-tocopherol, dibutylhydroxytoluene, and butylhydroxyanisole; amino acids such as glycine, alanine, leucine, serine, tryptophan, cysteine, methionine, aspartic acid, glutamic acid, and arginine; moisturizers such as collagen, hyaluronic acid, carotenoid acid, sodium lactate, dl-pyrrolidone carboxylate, keratin, casein, lecithin, and urea; royal jelly extract, peony extract, loofah extract, and rose extract. These include extracts such as lemon extract, aloe extract, calamus root extract, eucalyptus extract, sage extract, tea extract, seaweed extract, placenta extract, and silk extract; astringents such as zinc oxide, allantoin hydroxyaluminum, tannic acid, citric acid, and lactic acid; anti-inflammatory agents such as allantoin, glycyrrhetinic acid, dipotassium glycyrrhizate, and azulene; UV absorbers such as diethylamino hydroxybenzoyl hexyl benzoate, 2-ethylhexyl paramethoxycinnamate, ethylhexyl triazone, oxybenzone, hydroxybenzophenone sulfonic acid, sodium dihydroxybenzophenone sulfonate, and dihydroxybenzophenone; UV scattering agents such as zinc oxide, titanium dioxide, and octyltrimethoxysilane-coated titanium dioxide; whitening agents such as arbutin and kojic acid; antiperspirants such as chlorohydroxyaluminum and isopropylmethylphenol; and anti-inflammatory and analgesic agents such as methyl salicylate, indomethacin, felbinac, and ketoprofen.

[0048] When an active ingredient is included, the amount of the active ingredient is not particularly limited. For example, the amount of the active ingredient is preferably 0.01% by mass or more, and more preferably 0.03% by mass or more, in the aqueous stock solution. Furthermore, the amount of the active ingredient is preferably 20% by mass or less, and more preferably 15% by mass or less, in the aqueous stock solution. By having the amount of the active ingredient within the above range, the post-foaming gel spray composition is more likely to obtain the effects of the included active ingredient.

[0049] Powder is used for purposes such as improving the user experience.

[0050] The powder is not particularly limited. Examples include talc, silica, zeolite, kaolin, mica, magnesium carbonate, calcium carbonate, zinc silicate, magnesium silicate, aluminum silicate, calcium silicate, etc.

[0051] When powder is incorporated, the powder content is not particularly limited. For example, the powder content is preferably 0.1% by mass or more, and more preferably 0.3% by mass or more, in the aqueous stock solution. Furthermore, the powder content is preferably 5% by mass or less, and more preferably 3% by mass or less, in the aqueous stock solution. By keeping the powder content within the above range, the effects of incorporating powder are more easily obtained in the post-foaming gel spray composition.

[0052] The viscosity of the aqueous stock solution (at 20°C) is not particularly limited. For example, the viscosity of the aqueous stock solution is preferably 100 mPa·s or more, and more preferably 500 mPa·s or more. Furthermore, the viscosity of the aqueous stock solution is preferably 100,000 mPa·s or less, and more preferably 90,000 mPa·s or less. When the viscosity of the aqueous stock solution is within the above range, the post-foaming gel spray composition is sprayed in a mist-like manner, adheres to the surface, adheres well to the surface, and does not drip easily. The viscosity of the aqueous stock solution can be measured at 20°C using a B-type rotational viscometer.

[0053] The method for preparing the aqueous stock solution is not particularly limited. The aqueous stock solution can be prepared by conventionally known methods. For example, the aqueous stock solution can be prepared by adding a thickener, a surfactant, and optional components to water or warm water.

[0054] The aqueous concentrate content is preferably 30% by mass or more, and more preferably 40% by mass or more, in the post-foaming gel spray composition. Furthermore, the aqueous concentrate content is preferably 85% by mass or less, and more preferably 80% by mass or less, in the post-foaming gel spray composition. When the aqueous concentrate content is within the above range, the post-foaming gel spray composition adheres closely as a thin film of gel, and the subsequent foaming lifts away dirt and other contaminants, making them easy to remove.

[0055] (Lipophilic solvent with a boiling point of 15-50°C) Lipophilic solvents with a boiling point of 15-50°C are incorporated as foaming agents to cause post-foaming of the sprayed effervescent gel spray composition.

[0056] Lipophilic solvents with a boiling point of 15-50°C are not particularly limited. For example, lipophilic solvents with a boiling point of 15-50°C include hydrocarbons such as isopentane (boiling point 27°C) and n-pentane (boiling point 36°C), and hydrofluoroolefins such as trans-1-chloro-3,3,3-trifluoropropene (HFO-1233zd(E), boiling point 19°C) and cis-1-chloro-3,3,3-trifluoropropene (HFO-1233zd(Z), boiling point 39°C). Among these, isopentane is preferred as the lipophilic solvent with a boiling point of 15-50°C because the post-foaming gel spray composition is easily sprayed in a mist form and foams easily after application.

[0057] The content of the lipophilic solvent with a boiling point of 15 to 50°C is preferably 3% by mass or more, and more preferably 5% by mass or more, in the post-foaming gel spray composition. Furthermore, the content of the lipophilic solvent with a boiling point of 15 to 50°C is preferably 40% by mass or less, and more preferably 35% by mass or less, in the post-foaming gel spray composition. When the content of the lipophilic solvent with a boiling point of 15 to 50°C is within the above range, the post-foaming gel spray composition readily foams after adhering to the surface and forming a gel-like film.

[0058] (dimethyl ether) Dimethyl ether is added to the post-foaming gel spray composition to allow it to be sprayed in a mist form, creating a thin gel film on the application surface. Furthermore, dimethyl ether is a hydrophilic liquefied gas. Therefore, dimethyl ether may volatilize at a different time than the lipophilic solvents mentioned above.

[0059] The dimethyl ether content in the post-foaming gel spray composition is preferably 5% by mass or more, and more preferably 10% by mass or more. Furthermore, the dimethyl ether content is preferably 55% by mass or less, and more preferably 50% by mass or less. When the dimethyl ether content is within the above range, the post-foaming gel spray composition is easily sprayed in a mist-like manner and easily forms a thin film of gel on the application surface.

[0060] The post-foaming gel spray composition of this embodiment may also be used in combination with a liquefied gas other than dimethyl ether. The liquefied gas is not particularly limited. For example, the liquefied gas may be hydrofluoroolefins with a boiling point of less than 5°C, such as trans-1,3,3,3-tetrafluoropropa-1-ene (HFO-1234ze, boiling point -19°C) and trans-2,3,3,3-tetrafluoropropa-1-ene (HFO-1234yf, boiling point -29°C), as well as aliphatic hydrocarbons with 3 to 4 carbon atoms, consisting of propane, n-butane, isobutane, isopentane, and mixtures thereof, and mixtures thereof. By using these liquefied gases in combination, the post-foaming gel spray composition can adjust the rate of post-foaming.

[0061] When liquefied gas is incorporated, the liquefied gas content is preferably 5% by mass or more, and more preferably 10% by mass or more, in the post-foaming gel spray composition. Furthermore, the liquefied gas content is preferably 50% by mass or less, and more preferably 45% by mass or less, in the post-foaming gel spray composition. By having the liquefied gas content within the above range, the post-foaming rate of the post-foaming gel spray composition can be easily adjusted.

[0062] Furthermore, the post-foaming gel spray composition may also be used in combination with a compressed gas. The compressed gas is not particularly limited. For example, the compressed gas may be nitrogen, air, oxygen, hydrogen, carbon dioxide, nitrous oxide, etc.

[0063] When compressed gas is used, it is preferable that the compressed gas be filled so that the pressure inside the aerosol container at 25°C is 0.3 MPa or higher, and more preferably 0.5 MPa or higher. Furthermore, it is preferable that the compressed gas be filled so that the pressure inside the aerosol container at 25°C is 1.0 MPa or lower, and more preferably 0.8 MPa or lower. By filling the compressed gas to a pressure within the above range, the post-foaming gel spray composition is easily sprayed in a mist-like manner and easily forms a thin film of gel on the surface it is applied to.

[0064] <Post-effervescent gel spray product> A post-foaming gel spray product according to one embodiment of the present invention comprises the post-foaming gel spray composition described above. The post-foaming gel spray product of this embodiment can be prepared by filling it with the post-foaming gel spray composition. Specifically, the aqueous stock solution is filled into the container body and a valve is fixed in place. A lipophilic solvent with a boiling point of 15 to 50°C and dimethyl ether are filled through the valve, and the post-foaming gel spray composition is prepared by mixing the aqueous stock solution with the lipophilic solvent with a boiling point of 15 to 50°C and dimethyl ether. A post-foaming gel spray product filled with the post-foaming gel spray composition can also be prepared.

[0065] The container body is a cylindrical container with a closed bottom, into which the post-foaming gel spray composition is filled. A valve is attached to the opening of the container body.

[0066] The material of the container body is not particularly limited. For example, the material of the container body may be metal such as aluminum or tinplate, various synthetic resins, pressure-resistant glass, etc.

[0067] A valve is a component used to close and seal the opening of a container body. The valve primarily comprises a housing held in a mounting cup fitted to the opening of the container body, a stem with a stem hole connecting the inside and outside of the container body, and a stem rubber attached around the stem hole to close it. The housing contains the stem, the stem rubber, and a spring that biases the stem upward. A spray member for spraying a post-foaming gel spray composition is attached to the upper end of the stem.

[0068] The spraying member is a component for spraying a post-foaming gel spray composition by operating the opening and closing of a valve, and is attached to the upper end of the stem. The spraying member mainly comprises a nozzle portion with spray holes formed therein and an operating portion operated by the user with their fingers or the like. The post-foaming gel spray composition is sprayed from the spray holes. The number and shape of the spray holes are not particularly limited. There may be multiple spray holes. The shape of the spray holes may be approximately circular, approximately angular, etc.

[0069] In this embodiment of the post-foaming gel spray product, when the spraying member is pressed down, the valve stem is pushed down. This causes the stem rubber to bend downward, opening the stem hole. As a result, the inside and outside of the container body are connected. When the inside and outside of the container body are connected, the pressure difference between the inside and outside of the container body draws the post-foaming gel spray composition into the housing, which then passes through the stem hole and the internal stem passage, is sent to the spraying member, and is subsequently sprayed from the spray hole. The discharged post-foaming gel spray composition is sprayed in a mist-like form and adheres to the surface it is applied to (for example, objects such as window glass, walls, toilets, floors, or human body parts such as arms and legs). The post-foaming gel spray composition does not easily scatter on the surface it is applied to and forms a thin film of gel (a gel-like movie). Therefore, the gel movie does not easily drip off the surface it is applied to, and the active ingredients are easily applied to the surface as needed.

[0070] Furthermore, the gel film then foams. Specifically, the film of the post-foaming gel spray composition of this embodiment gradually foams 30 seconds to 30 minutes (preferably 40 seconds to 25 minutes) after adhering to the surface. Therefore, the foamed gel can, for example, lift dirt from the surface and can also be easily washed away. Thus, the post-foaming gel spray composition of this embodiment foams after a predetermined time has elapsed since adhering to the surface in a film-like manner. [Examples]

[0071] The present invention will be described more specifically below with reference to examples. The present invention is not limited in any way to these examples.

[0072] <Example 1> Stock solution A was prepared according to the formulation shown in Table 1 below, and 58 g (58% by mass) was filled into an aluminum container body according to the formulation shown in Table 2. A valve was fixed to the opening of the container body, and 12.6 g (12.6% by mass) of isopentane and 29.4 g (29.4% by mass) of dimethyl ether were filled through the valve. Stock solution A, isopentane, and dimethyl ether were mixed in the aerosol container to prepare a post-foaming gel spray composition and a post-foaming gel spray product.

[0073] [Table 1]

[0074] [Table 2]

[0075] (Examples 2-17, Comparative Examples 1-3) Except for changing the aqueous stock solution formulation to the formulation shown in Table 1, the stock solution was prepared in the same manner as in Example 1, and a post-foaming gel spray composition was prepared according to the formulation shown in Table 2. This was then filled into an aerosol container to produce a post-foaming gel spray product.

[0076] The post-foaming gel spray products prepared in Examples 1-17 and Comparative Examples 1-3 were used to measure the spray state, surface condition, and post-foaming properties using the following evaluation method. The results are shown in Table 2.

[0077] <Spray state> The aerosol product was immersed in a 25°C constant temperature water bath for 1 hour to adjust the post-foaming gel spray composition to 25°C, and the state of the post-foaming gel spray composition before it adhered to the surface was confirmed. <Condition of the attached surface> The aerosol product was immersed in a 25°C constant temperature water bath for one hour to adjust the post-foaming gel spray composition to 25°C, and the state of the post-foaming gel spray composition applied to the surface was checked. <Post-foaming properties> The aerosol product was immersed in a 25°C constant temperature water bath for 1 hour, and the post-foaming gel spray composition was adjusted to 25°C. It was then sprayed from a distance of 15 cm from a glass surface for 1 second, and the state of the post-foaming gel aerosol composition adhering to the glass surface was evaluated according to the following evaluation criteria. (Evaluation Criteria) ○: The entire surface to which the gel was applied foamed, and all of the gel turned into foam. △: Some gel remained on the surface where it was applied, but most of it turned into foam. ×: The adhesion surface did not change.

[0078] <Injection Pattern> The aerosol product was immersed in a 25°C constant temperature water bath for 1 hour to adjust the post-foaming gel spray composition to 25°C. It was then sprayed for 1 second from a distance of 15 cm from a glass surface held vertically to the ground, and the spray pattern of the post-foaming gel aerosol composition that adhered to the glass surface was evaluated according to the following evaluation criteria. (Evaluation Criteria) ○: The spray pattern had a diameter of 5 cm or more. △: The spray pattern had a diameter of 1 cm or more but less than 5 cm. ×: The spray pattern was less than 1 cm in diameter.

[0079] As shown in Table 2, the aerosol compositions of Examples 1-14 and 17, which contained a lipophilic solvent with a boiling point of 15-50°C and dimethyl ether, and the aerosol composition of Comparative Example 1, were sprayed as a mist and formed a thin film of gel on the application surface. The aerosol compositions of Examples 1-17, which contained surfactants, foamed after application, but the aerosol composition of Comparative Example 1, which did not contain surfactants, did not foam after application. The aerosol compositions of Comparative Examples 2 and 3, which did not contain a lipophilic solvent with a boiling point of 15-50°C or dimethyl ether, were sprayed as foam, remained foamy on the application surface, and did not foam after application. The aerosol compositions of Examples 1, 2, 4, 9, 12, and 17 foamed across the entire application surface and completely transformed into foam. The aerosol compositions of Examples 3, 6, 10, and 11, which contained a large amount of surfactant, mostly transformed into foam, although some gel remained. The aerosol composition of Example 5, which used AMP as the neutralizing agent, mostly transformed into foam, although some gel remained. In Example 7, the aerosol composition with a reduced amount of lipophilic solvent with a boiling point of 15-50°C resulted in some gel remaining, but most of it transformed into foam. In Example 8, the aerosol composition with an increased amount of lipophilic solvent with a boiling point of 15-50°C and a reduced amount of dimethyl ether resulted in some gel remaining, but most of it transformed into foam, and the spray pattern was between 1 cm and 5 cm in diameter. In Example 13, the aerosol composition with a high concentration of ethanol resulted in some gel remaining, but most of it transformed into foam. In Example 14, the aerosol composition with a different thickener other than the association-type thickener resulted in the entire surface being foamed and all of it transforming into foam, but the spray pattern was between 1 cm and 5 cm in diameter. In Examples 15 and 16, the aerosol compositions without ethanol were sprayed as a mist and were a gel that foamed slightly on the surface of application.

Claims

1. It contains an aqueous concentrate, a lipophilic solvent with a boiling point of 15-50°C, and dimethyl ether. The aqueous stock solution is a post-foaming gel spray composition comprising an associated thickener, a thickener other than the associated thickener, a surfactant, and water.

2. The aqueous stock solution comprises alcohols, wherein the post-foaming gel spray composition is as described in claim 1.

3. The aqueous stock solution comprises an oil, the post-foaming gel spray composition according to claim 1 or 2.

4. The post-foaming gel spray composition according to claim 1 or 2, wherein the aqueous stock solution contains 50 to 97% by mass of water.

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