Ejecting product

Abstract

Provided is an aerosol product including an aerosol composition and an aerosol container. The aerosol container includes a valve and is filled with the aerosol composition. The aerosol composition includes a raw solution and dimethyl ether. The raw solution includes water. The content of dimethyl ether in the aerosol composition is 20 to 30 mass%. The valve includes a housing. The housing includes a gas phase introduction hole that introduces a gas phase portion of the aerosol composition. The amount of combustible material ejected from the aerosol composition is 0.05 to 0.24 g / sec.

Description

Technical Field

[0001] This invention relates to an aerosol product. More specifically, this invention relates to an aerosol product that, even with a low content of liquefied gas, can achieve a stable spray state in a fine mist form, exhibits moderate dryness, and provides high safety for pyrotechnics. Background Technology

[0002] Previously, aerosol products that use dimethyl ether to spray the concentrate in a mist form have been disclosed. Patent Document 1 discloses a spray gel containing at least one condensation polymer comprising polyurethane and / or polyurea chains, water, ethanol, and dimethyl ether, wherein the spray volume is 0.75 g per second or less.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Publication No. 2002-523439 Summary of the Invention

[0006] However, the invention described in Patent Document 1 has a low content of dimethyl ether as a liquefied gas and lacks a gas phase inlet. Therefore, when sprayed onto hair, the hairspray spreads little, and the spray volume per unit time is high. Consequently, the invention described in Patent Document 1 adheres to hair with high density but has poor drying properties. Furthermore, since the aerosol composition contains approximately 50% by weight of ethanol and dimethyl ether as flammable materials, the amount of flammable material sprayed in the invention described in Patent Document 1 is increased. Therefore, if the invention described in Patent Document 1 is sprayed for a long time in a confined room, it may ignite due to a nearby ignition source. Additionally, in the invention described in Patent Document 1, reducing the dimethyl ether content makes it difficult to obtain a stable, fine spray.

[0007] The present invention was made in view of such existing problems, and its object is to provide an aerosol product that can achieve a stable spray state as a fine mist even with a low content of liquefied gas, has moderate dryness, and is highly safe for fireworks.

[0008] An aerosol product according to one aspect of the present invention, which solves the above-mentioned problems, comprises an aerosol composition and an aerosol container. The aerosol container has a valve and is filled with the aerosol composition. The aerosol composition comprises a stock solution and a dimethyl ether. The stock solution contains water. The content of the dimethyl ether in the aerosol composition is 20-30% by mass. The valve has a housing and is provided with a gas phase inlet for introducing the gas phase portion of the aerosol composition. The injection rate of the combustible material contained in the aerosol composition is 0.05-0.24 g / s. Detailed Implementation

[0009] [Aerosol Products]

[0010] An aerosol product according to one embodiment of the present invention includes an aerosol composition and an aerosol container. The aerosol container has a valve and is filled with the aerosol composition. The aerosol composition includes a stock solution and a dimethyl ether, wherein the stock solution includes water. The content of dimethyl ether in the aerosol composition is 20-30% by mass. The valve has a housing, and the housing is provided with a gas phase inlet for introducing the gas phase portion of the aerosol composition. The injection rate of the combustible material contained in the aerosol composition is 0.05-0.24 g / s. These will be described separately below.

[0011] (Aerosol composition)

[0012] The aerosol composition comprises a stock solution and a dimethyl ether, wherein the stock solution contains water.

[0013] ·Original solution

[0014] The stock solution contains water. Water is used as a solvent.

[0015] There is no specific definition for water. If we were to give an example, water could be purified water, ion-exchanged water, deep ocean water, etc.

[0016] The water content is not particularly limited. For example, the water content in the stock solution is preferably 60% by mass or more, more preferably 70% by mass or more. Furthermore, the water content is preferably 99% by mass or less, more preferably 95% by mass or less. With the water content within the above range, the flame length of the aerosol composition is not easily determined, resulting in excellent safety for pyrotechnics. Additionally, the aerosol product tends to contain active ingredients. Furthermore, when the aerosol product is sprayed in a confined space, it is not easily ignited even if a source of ignition is present nearby.

[0017] The concentrate may also contain surfactants, alcohols, hair styling agents, active ingredients, water-soluble polymers, oils, powders, etc., depending on the use or purpose.

[0018] In cases involving hydrofluoroolefins, surfactants are used for purposes such as emulsifying them in the aerosol composition, spraying them with a uniform composition, and forming a stable spray pattern.

[0019] There are no specific limitations on surfactants. If we were to give an example, surfactants could be nonionic surfactants, anionic surfactants, amphoteric surfactants, silicone surfactants, natural surfactants, etc.

[0020] Nonionic surfactants include polyoxyethylene polyoxypropylene alkyl ethers such as POE·POP cetyl ether and POE·POP decyl tetradecyl ether; ether-type polyoxyethylene alkyl ethers such as POE cetyl ether, POE stearyl ether, POE oleyl ether, POE lauryl ether, POE behenyl ether, POE octyl dodecyl ether, POE isocetyl ether, and POE isostearyl ether; polyethylene glycol fatty acid esters such as polyethylene monostearate; polyoxyethylene hydrogenated castor oil such as POE hydrogenated castor oil; polyoxyethylene glycerol fatty acid esters such as POE monostearate and POE monooleate; polyoxyethylene alkyl ether fatty acid esters such as POE cetyl stearate and POE isostearate lauryl ether; and sorbitol fatty acid esters such as POE monocoquercetin. Polyoxyethylene sorbitan fatty acid esters such as sorbitan monostearate, sorbitan monooleate, and sorbitan triisostearate; polyoxyethylene sorbitan fatty acid esters such as sorbitan monolaurate, sorbitan tetrastearate, and sorbitan tetraoleate; polyglycerol fatty acid esters such as hexaglycerol monolaurate, hexaglycerol monomyristate, hexaglycerol monolaurate, hexaglycerol monomyristate, hexaglycerol monolaurate, hexaglycerol monomyristate, hexaglycerol monomyristate, hexaglycerol monomyristate, hexaglycerol monoisostearate, hexaglycerol monooleate, hexaglycerol monolinoleate, and hexaglycerol monolinoleate; and polyoxyethylene lanolin alcohol esters such as POE lanolin alcohol.

[0021] Examples of anionic surfactants include alkyl phosphates such as fatty acid soaps, potassium lauryl phosphate, and sodium lauryl phosphate; polyoxyethylene alkyl ether phosphates such as sodium lauryl ether phosphate; alkyl sulfates such as ammonium lauryl sulfate, potassium lauryl sulfate, sodium lauryl sulfate, triethanolamine lauryl sulfate, and sodium cetyl sulfate; polyoxyethylene alkyl ether sulfates such as sodium lauryl ether sulfate, triethanolamine lauryl ether sulfate, sodium alkyl ether sulfate, and triethanolamine alkyl ether sulfate; alkyl ether carboxylates such as potassium lauryl ether acetate, sodium lauryl ether acetate, potassium tridecyl ether acetate, and sodium tridecyl ether acetate; and sulfonates such as sodium lauryl sulfoacetate, sodium tetradecene sulfonate, dioctyl sulfosuccinate, sodium dialkyl sulfosuccinate, sodium alkylnaphthalene sulfonate, sodium alkyl diphenyl ether disulfonate, sodium alkane sulfonate, sodium dodecylbenzene sulfonic acid, and sodium dodecylbenzene sulfonate. In addition, there are N-acylglutamate salts such as N-coconut oil fatty acid acyl-L-glutamate triethanolamine, N-coconut oil fatty acid acyl-L-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 sodium, and N-stearoyl-L-glutamate sodium; N-acylglycine salts such as N-coconut oil fatty acid acylglycine potassium and N-coconut oil fatty acid acylglycine sodium; N-acylalanine salts such as N-coconut oil fatty acid acyl-DL-alanine triethanolamine; and acylalanine salts such as lauroyl methylalanine sodium, etc., which are amino acid-type surfactants.

[0022] Amphoteric surfactants include alkyl betaines such as lauryl dimethylaminoacetic acid betaine (lauryl betaine), stearyl betaine, lauryl ammonium propyl betaine, lauryl hydroxysulfonyl betaine, stearyl dimethylaminoacetic acid betaine, dodecylaminomethyl dimethylsulfonyl betaine, and octadecylaminomethyl dimethylsulfonyl betaine; fatty acid ammonium propyl betaine such as cocamidopropyl betaine, coconut oil fatty acid ammonium propyl dimethylaminoacetic acid betaine (cocamidopropyl betaine), and cocamidopropyl hydroxysulfonyl betaine; alkyl imidazole type such as 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolium betaine; amino acid type such as sodium lauroyl glutamate, potassium lauroyl glutamate, and lauroyl methyl-β-alanine; and amine oxide type such as lauryl dimethylamine N-oxide and oleyl dimethylamine N-oxide.

[0023] Silicone-based surfactants include polyoxyethylene-methylpolysiloxane copolymers, polyoxypropylene-methylpolysiloxane copolymers, and poly(oxyethylene-oxypropylene)-methylpolysiloxane copolymers.

[0024] Natural surfactants include sodium surfactant, cyclodextrin, hydrogenase, and soybean lecithin.

[0025] When a surfactant is included, the surfactant content is not particularly limited. As an example, the surfactant content in the stock solution is preferably 0.1% by mass or more, more preferably 0.3% by mass or more. Furthermore, the surfactant content is preferably 30% by mass or less, more preferably 25% by mass or less. With the surfactant content within the above range, when combined with hydrofluoroolefins, the hydrofluoroolefins are easily emulsified in the aerosol composition. As a result, the aerosol product can be easily sprayed with a uniform composition. In addition, the sprayed aerosol composition is less likely to leave residues on the target object, resulting in an excellent user experience.

[0026] Alcohols can be monohydric alcohols, polyhydric alcohols, etc.

[0027] Monohydric alcohols are appropriately used for purposes such as making the spray finer, improving the drying properties of sprayed objects such as hair, and serving as a solvent for dissolving active ingredients that are not easily soluble in water.

[0028] There is no particular definition for monohydric alcohols. If we were to give an example, monohydric alcohols would include ethanol, isopropanol, and other monohydric alcohols with 2 to 3 carbon atoms.

[0029] Polyols are used appropriately for purposes such as adjusting the dryness of sprayed objects like hair.

[0030] There are no particular limitations on polyols. If we were to give an example, polyols would include propylene glycol, 1,3-butanediol, hexanediol, glycerol, dipropylene glycol, diglycerol, and other 2- to 4-diols.

[0031] When alcohol is included, the alcohol content is not particularly limited. For example, the alcohol content in the stock solution is preferably 0.5% by mass or more, more preferably 3% by mass or more. Furthermore, the alcohol content in the stock solution is preferably 20% by mass or less, more preferably 15% by mass or less. With the alcohol content within the above range, the aerosol product can achieve the effects brought about by the incorporation of alcohol, while also making it difficult to determine the flame length and exhibiting excellent stability in pyrotechnics. In addition, the aerosol product easily improves the drying properties of the projectile. As a result, the aerosol product offers a superior user experience.

[0032] There are no particular limitations on hair styling agents. As an example, hair styling agents include amphoteric types such as (meth)acrylate dialkylaminoethyl ester-(meth)acrylate alkyl ester copolymer, octylacrylamide-hydroxypropyl acrylate-butylaminoethyl methacrylate copolymer, octylamide-acrylate-butylaminoethyl methacrylate copolymer, vinylpyrrolidone-vinyl acetate copolymer, hydroxyethyl acrylate-butyl acrylate-methoxyethyl acrylate copolymer, anionic types such as acrylate alkanolamine, (alkyl acrylate·octylacrylamide) copolymer, vinylpyrrolidone-N,N-dimethylaminoethyl methacrylate copolymer sulfate, hydroxyethyl cellulose·dimethyldiallyl ammonium chloride cationic types, alkyl acrylate copolymer emulsions, alkyl acrylate-styrene copolymer emulsions, and polyurethane, etc.

[0033] Especially when using the aerosol product of this embodiment as a hair styling agent, the content (solid component) of the hair styling agent in the concentrate is preferably 0.1% by mass or more, more preferably 0.5% by mass or more. Furthermore, the content (solid component) of the hair styling agent in the concentrate is preferably 20% by mass or less, more preferably 15% by mass or less. With the content (solid component) of the hair styling agent within the above range, the aerosol product can achieve suitable styling performance, and the aerosol composition can be easily sprayed in a mist form, preventing the hair styling agent from clogging the valve stem bypass hole, the spray nozzle of the spraying member, etc.

[0034] There are no specific limitations on the active ingredients. To give an example, in addition to the hair styling agents mentioned above, active ingredients may include various fragrances such as natural and synthetic fragrances; 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, tocopheryl acetate, tocopherol, nicotinic acid tocopheryl ester, benzoyl thiamine, riboflavin, and mixtures thereof; antioxidants such as ascorbic acid, α-tocopherol, butylated hydroxytoluene, and butylated hydroxyanisole; amino acids such as glycine, alanine, leucine, serine, tryptophan, cysteine, methionine, aspartic acid, glutamic acid, and arginine; and collagen, hyaluronic acid, and charonin. Moisturizers including sodium lactate, d1-pyrrolidone carboxylate, keratin, casein, lecithin, and urea; preservatives including parabens and phenoxyethanol; disinfectants including sodium benzoate, potassium sorbate, benzalkonium chloride, benzyl chloride, chlorhexidine chloride, and chloroformol; extracts including royal jelly extract, peony extract, loofah extract, rose extract, lemon extract, aloe vera extract, calamus root extract, eucalyptus extract, sage extract, tea extract, seaweed extract, placenta extract, and silk extract; and extracts including zinc oxide, allantoin aluminum hydroxide, tannic acid, citric acid, and lactic acid. Astringents; anti-inflammatory agents such as allantoin, glycyrrhetinic acid, dipotassium glycyrrhizate, and azurite; methyl laurate; deodorants such as methyl benzoate, methyl phenyl acetate, lemonyl geraniol, acetophenone myristate, benzyl acetate, benzyl propionate, and green tea extract; ultraviolet absorbers such as diethylaminohydroxybenzoylhexyl benzoate, 2-ethylhexyl p-methoxycinnamate, ethylhexyl triazine, oxybenzone, hydroxybenzophenone sulfonic acid, sodium dihydroxybenzophenone sulfonate, and dihydroxybenzophenone; ultraviolet scattering agents such as zinc oxide, titanium dioxide, and octyltrimethoxysilane-coated titanium dioxide; and whitening agents such as arbutin and kojic acid.

[0035] When an active ingredient is included, its content is not particularly limited. As an example, the content of the active ingredient in the stock solution is preferably 0.01% by mass or more, more preferably 0.05% by mass or more. Furthermore, the content of the active ingredient in the stock solution is preferably 20% by mass or less, more preferably 15% by mass or less. With the content of the active ingredient within the above ranges, the aerosol product can achieve the effects resulting from the combination of the active ingredient, and the aerosol composition is easily sprayed in a mist form, without easily creating a concentration difference of the aerosol composition on the target object.

[0036] Water-soluble polymers are used appropriately for purposes such as adjusting the spread of the mist or its adhesion to the target object.

[0037] There are no specific limitations on water-soluble polymers. For example, water-soluble polymers include cellulose-based polysaccharides such as hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, and sodium carboxymethyl cellulose; gums such as carrageenan, xanthan gum, gum arabic, tragacanth, cationic guar gum, guar gum, gellan gum, and locust bean gum; gelatin, dextran, sodium carboxymethyl dextran, dextrin, pectin, starch, corn starch, wheat starch, sodium alginate, modified potato starch, hyaluronic acid, sodium hyaluronate, polyvinyl alcohol, polyvinylpyrrolidone, and carboxyvinyl polymers.

[0038] When water-soluble polymers are included, the content of the water-soluble polymers is not particularly limited. As an example, the content of the water-soluble polymers in the stock solution is preferably 0.001% by mass or more, more preferably 0.005% by mass or more. Furthermore, the content of the water-soluble polymers in the stock solution is preferably 5% by mass or less, more preferably 3% by mass or less. By keeping the content of the water-soluble polymers within the above ranges, the aerosol product can achieve the effects brought about by the incorporation of water-soluble polymers, and is less prone to stickiness, resulting in an excellent user experience.

[0039] Oils are used appropriately for purposes such as improving combability and imparting shine.

[0040] There are no specific limitations on the oil content. For example, oils could include liquid paraffin, squalene, squalane, isoparaffins, and other hydrocarbon oils; diisopropyl adipate, isopropyl myristate, isopropyl palmitate, cetyl octanoate, octyl dodecyl myristate, butyl stearate, myristyl myristate, decyl oleate, cetyl lactate, isocetyl stearate, cetearyl alcohol, diisopropyl adipate, diisobutyl adipate, diisopropyl adipate, diisopropyl sebacate, diethyl sebacate, diethylhexyl sebacate, diethylhexyl succinate, diethoxyethyl succinate, diisostearyl malate, cyclohexane 1,4-dicarboxylic acid diethoxydiglycol ester, and eicosanoic acid-tetradecanoic acid polyglycerol-10. Ester oils such as cyclohexanedicarboxylic acid diethoxydiethylene glycol ester, diethylpentanediol dinepentanoate, and methylpentanediol dinepentanoate; silicone oils such as methyl polysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecylcyclohexasiloxane, methyl cyclopolysiloxane, tetrahydrotetramethylcyclotetrasiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, methylhydropolysiloxane, methylphenylpolysiloxane, and polyglycerol-modified organosilicon; higher alcohols such as lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, betaine alcohol, and lanolin alcohol; liquid fatty acids such as isostearic acid; oils such as avocado oil, macadamia nut oil, shea butter, olive oil, and camellia oil; and waxes such as beeswax and lanolin wax.

[0041] When oil is included, the oil content is not particularly limited. As an example, the oil content in the stock solution is preferably 0.1% by mass or more, more preferably 0.3% by mass or more. Furthermore, the oil content in the stock solution is preferably 20% by mass or less, more preferably 15% by mass or less. With the oil content within the above range, the aerosol product can achieve the effects resulting from the incorporation of oil, and the aerosol composition is not easily separated and is stable.

[0042] Powders are used appropriately for purposes such as improving the smoothness and other user experience.

[0043] There are no specific limitations on the powder. If we were to give an example, the powder could be talc, kaolin, mica, magnesium carbonate, calcium carbonate, zinc silicate, magnesium silicate, aluminum silicate, calcium silicate, silicon dioxide, zeolite, ceramic powder, carbon powder, nylon powder, silk powder, polyurethane powder, organosilicon powder, polyethylene powder, octenyl succinic acid corn starch ester (AL), corn starch, etc.

[0044] When powder is included, the powder content is not particularly limited. As an example, the powder content in the stock solution is preferably 0.1% by mass or more, more preferably 0.3% by mass or more. Furthermore, the powder content is preferably 5% by mass or less, more preferably 3% by mass or less. With the powder content within the above range, the aerosol product can achieve the effects brought about by the inclusion of powder, and the aerosol composition containing powder can be easily sprayed with a uniform composition.

[0045] Returning to the overall description of the concentrate, the content of the concentrate is not particularly limited. As an example, the concentrate content in the aerosol composition is preferably 45% by mass or more, more preferably 50% by mass or more. Furthermore, the concentrate content in the aerosol composition is preferably 75% by mass or less, more preferably 70% by mass or less. When the concentrate content is within the above range, the spraying state of the aerosol composition of the aerosol product is easily stabilized, and it is easy to spray in a fine mist.

[0046] There are no particular limitations on the method for preparing the stock solution. For example, the stock solution can be prepared by dissolving surfactants, active ingredients, etc., in water.

[0047] dimethyl ether

[0048] Dimethyl ether is used as a propellant to spray aerosol compositions in a mist form.

[0049] The content of dimethyl ether in the aerosol composition is preferably 20% by mass or more. Furthermore, the content of dimethyl ether in the aerosol composition is preferably 30% by mass or less. When the content of dimethyl ether is less than 20% by mass, the aerosol composition is less likely to expand into a mist when sprayed, and the spray pattern is less stable. On the other hand, when the content of dimethyl ether exceeds 30% by mass, the following may occur: the amount of combustible material in the aerosol product spray increases, and if sprayed for a long time in a confined room and near an ignition source, it may ignite.

[0050] Hydrofluoroolefins

[0051] The aerosol product of this embodiment may contain hydrofluoroolefins. The hydrofluoroolefins are preferably trans-1-chloro-3,3,3-trifluorochloropropene (HFO-1233zd(E), boiling point 19°C), cis-1-chloro-3,3,3-trichloropropene (HFO-1233zd(Z), boiling point 39°C) and mixtures thereof, which are hydrofluoroolefins with boiling points of 10 to 40°C.

[0052] When hydrofluoroolefins with a boiling point of 10–40°C are included, the content of hydrofluoroolefins with a boiling point of 10–40°C in the aerosol composition is preferably 3% by mass or more, more preferably 5% by mass or more. Furthermore, the content of hydrofluoroolefins with a boiling point of 10–40°C in the aerosol composition is preferably 30% by mass or less, more preferably 25% by mass or less. With the content of hydrofluoroolefins within the above range, the aerosol product can be easily sprayed in a manner that expands the aerosol composition into a stable and fine mist. Additionally, the aerosol product can easily spray the aerosol composition to the very end.

[0053] Returning to the overall description of the aerosol composition, the aerosol composition of this embodiment contains a relatively low amount of dimethyl ether, approximately 20-30% by mass. Furthermore, as described later, the aerosol composition is filled into an aerosol container and sprayed. The aerosol container is equipped with a valve, which has a housing with a gas phase inlet. Therefore, during spraying, the gas phase portion of the dimethyl ether is easily ejected to the outside. Consequently, if the aerosol composition decreases due to spraying, the spraying state of the aerosol product changes, sometimes narrowing the mist's spread. On the other hand, by including hydrofluoroolefins in the aerosol composition, such changes in the spraying state are less likely to occur. As a result, the spraying state of the aerosol product becomes more stable.

[0054] There are no particular limitations on the preparation method of the aerosol composition. As an example, the aerosol composition can be manufactured by filling a container body with the stock solution, installing a valve on the container body, and then filling it with dimethyl ether. It should be noted that, in the case of hydrofluoroolefins, a mixture obtained by pre-mixing the hydrofluoroolefin and dimethyl ether can be used.

[0055] <Aerosol Container>

[0056] The aerosol product of this embodiment includes an aerosol container filled with the above-described aerosol composition. The aerosol container mainly includes: a container body filled with the above-described aerosol composition, a valve (aerosol valve) installed on the container body, and a spraying member installed on the aerosol valve.

[0057] (Container body)

[0058] The container body is a pressure-resistant container filled with an aerosol composition; it is a bottomed cylindrical container. An aerosol valve is installed at the opening of the container body.

[0059] There are no specific restrictions on the material of the container body. For example, the container body can be made of metals such as aluminum and tinplate, various synthetic resins, or pressure-resistant glass.

[0060] (Aerosol valve)

[0061] An aerosol valve is a component used to close and seal the opening of a container body. Additionally, an aerosol valve mainly comprises: a housing, a valve stem with a valve stem bypass hole forming a connection between the inside and outside of the container body, and valve stem rubber installed around the valve stem bypass hole for closing it.

[0062] The size (cross-sectional area) of the valve stem bypass bore is not particularly limited. However, as an example, the preferred size (cross-sectional area) of the valve stem bypass bore is 0.05 mm. 2 The above, more preferably 0.1mm 2 That's all. Additionally, the preferred size (cross-sectional area) of the valve stem bypass hole is 0.3 mm². 2 The following is more preferably 0.25mm 2 The following applies: If the size (cross-sectional area) of the valve stem bypass orifice is within the above range, the aerosol product will spread well and be easily sprayed in a fine mist.

[0063] The housing is generally cylindrical, housing the valve stem and spring. The valve stem, a generally cylindrical section, forms an internal passage during injection, through which the aerosol composition collected within the housing passes. Near the lower end of this internal passage, a valve stem bypass hole is formed, connecting the internal space of the housing to the internal passage. An injection component for injecting the aerosol composition is mounted at the upper end of the valve stem. A valve stem rubber component, mounted around the bypass hole, serves to properly isolate the internal space of the housing from the external environment. This disc-shaped component, when not injecting, ensures its inner circumferential surface seals against the outer circumferential surface of the valve stem where the bypass hole is formed, thus closing the bypass hole.

[0064] The aerosol product of this embodiment has a gas phase inlet hole on the side of the shell and a liquid phase inlet hole on the bottom of the shell.

[0065] The gas phase inlet is a transverse hole (through hole) formed on the side of the shell, which connects the gas phase portion of the aerosol composition inside the container body with the interior of the shell. If the interior of the shell is connected to the outside during aerosol product spraying, the gas phase portion of the aerosol composition (mainly dimethyl ether) is introduced into the shell through the gas phase inlet through the pressure difference with the outside.

[0066] The size (cross-sectional area) of the gas phase inlet is not particularly limited. However, as an example, the preferred size (cross-sectional area) of the gas phase inlet is 0.01 mm. 2 The above, more preferably 0.03mm 2 That's all. Additionally, the preferred size (cross-sectional area) of the vapor inlet port is 0.20 mm. 2 Hereinafter, 0.15mm is preferred. 2 The following applies. By using the size (cross-sectional area) of the gas inlet orifice within the above range, it is easy to introduce vaporized gas into the spray and adjust the amount of combustible material sprayed per unit time. The aerosol product has moderate dryness and is easy to spray in a fine mist.

[0067] The liquid phase inlet hole is a longitudinal hole (through hole) formed on the bottom surface of the shell, which connects the liquid phase portion of the aerosol composition inside the container body with the interior of the shell. If the interior of the shell is connected to the outside during aerosol product spraying, the liquid phase portion of the aerosol composition is introduced into the shell through the liquid phase inlet hole by the pressure difference with the outside.

[0068] The size (cross-sectional area) of the liquid phase inlet hole is not particularly limited. However, as an example, the preferred size (cross-sectional area) of the liquid phase inlet hole is 0.1 mm. 2 The above, more preferably 0.2mm 2 That's all. Additionally, the preferred size (cross-sectional area) of the liquid phase inlet hole is 5.0 mm. 2 The following is preferred: 4.0mm 2 The following applies. By ensuring the size (cross-sectional area) of the liquid phase inlet is within the above range, the spray volume of the liquid phase portion of the aerosol composition per unit time can be easily adjusted, and the spray state of the aerosol product can be easily stabilized.

[0069] During aerosol product injection, the gaseous phase of the aerosol composition introduced into the housing via the gas phase inlet port mixes with the liquid phase of the aerosol composition introduced into the housing via the liquid phase inlet port. This reduces the amount of combustible material injected per unit time compared to a product without gas phase inlets. By adjusting the injection rate of volatile combustible materials to a suitable range, the aerosol product achieves adequate dryness, resulting in a finer mist and improved safety of the injected aerosol composition.

[0070] (Spraying component)

[0071] The spraying component is a member used for spraying the aerosol composition and is mounted on the upper end of the valve stem. The spraying component mainly includes a nozzle section and an operating section operated by the user's fingers, etc. The nozzle section is a generally cylindrical portion that forms a spraying passage through which the aerosol composition passes. An opening (spray orifice) is formed at the front end of the spraying passage. The aerosol composition is sprayed through the spray orifice. The number and shape of the spray orifice are not particularly limited. Multiple spray orifices may also be present. Furthermore, the shape of the spray orifice may be generally circular, generally angular, etc.

[0072] The size (cross-sectional area) of the injection orifice is not particularly limited. However, as an example, the preferred size (cross-sectional area) of the injection orifice is 0.05 mm. 2 The above, more preferably 0.1mm 2 That's all. Additionally, the preferred size (cross-sectional area) of the injection hole is 0.3 mm. 2 The following is more preferably 0.25mm 2 Below. When the size (cross-sectional area) of the injection orifice is within the above range, the aerosol product spreads well and is easily sprayed in a fine mist.

[0073] For the aerosol product of this embodiment, if the injection member is pressed, the valve stem of the aerosol valve is pressed downwards. This causes the valve stem rubber to flex downwards, opening the valve stem bypass port. As a result, communication is established between the inside and outside of the container body. With this communication, the gaseous and liquid phases of the aerosol composition are drawn into the housing for mixing due to the pressure difference between the inside and outside of the container body. The aerosol composition is then delivered to the injection member through the valve stem bypass port and the valve stem internal passage, and then injected from the injection port.

[0074] The amount of combustible material contained in the aerosol composition sprayed per unit time in the aerosol product of this embodiment is within a specific range. That is, the amount of combustible material sprayed in the aerosol composition is 0.05 g / s or more, preferably 0.1 g / s or more. In addition, the amount of combustible material sprayed in the aerosol composition is 0.24 g / s or less, preferably 0.22 g / s or less. With the amount of combustible material sprayed within the above range, it is not easy to determine the flame length of the aerosol product, and it can be sprayed in a mist even when used in a confined space, thus improving safety against pyrotechnics. When the amount of combustible material sprayed is less than 0.05 g / s, the mist of the aerosol product becomes coarser, thereby reducing its drying properties and making the spraying state unstable. On the other hand, when the amount of combustible material sprayed exceeds 0.24 g, if the aerosol product is sprayed for a long time in a confined room and is located near a heat source, it may ignite. It should be noted that, in this embodiment, the amount of combustible material sprayed refers to the amount of combustible material (e.g., dimethyl ether, monohydric alcohol contained in the original liquid, oil, and other substances with an ignition point) sprayed from the aerosol product spray.

[0075] Even with a low dimethyl ether content, the aerosol product of this embodiment achieves a stable spray state with a fine mist by providing a gas phase inlet to the gas phase portion of the aerosol composition in the valve housing of the aerosol container and controlling the injection amount of combustible material within a specific range. Furthermore, in the case of containing hydrofluoroolefins, the aerosol product's mist easily expands, resulting in a stable spray state. Therefore, the aerosol product offers high safety for pyrotechnics.

[0076] The above description describes one embodiment of the present invention. The present invention is not particularly limited to the above embodiment. It should be noted that the above embodiment mainly describes an invention having the following configuration.

[0077] (1) An aerosol product comprising an aerosol composition and an aerosol container, wherein the aerosol container is valved and filled with the aerosol composition, wherein the aerosol composition comprises a stock solution and a dimethyl ether, wherein the stock solution comprises water, wherein the content of the dimethyl ether in the aerosol composition is 20 to 30% by mass, wherein the valve comprises a housing, wherein the housing is provided with a gas phase inlet for introducing the gas phase portion of the aerosol composition, wherein the injection rate of the combustible material contained in the aerosol composition is 0.05 to 0.24 g / s.

[0078] Based on this composition, the aerosol product, by containing a specific amount of dimethyl ether and using a valve with a gas phase inlet, ensures that the amount of combustible material in the spray is 0.05–0.24 g / s, achieving a stable spray state in a fine mist form with moderate dryness. Furthermore, the aerosol product offers high safety for pyrotechnics.

[0079] (2) The aerosol product according to (1), wherein the aerosol composition contains 3 to 30% by mass of a hydrofluoroolefin having a boiling point of 10 to 40°C.

[0080] Based on this composition, the aerosol product can be easily sprayed in a fine mist until the entire aerosol composition is sprayed, resulting in a more stable spray state.

[0081] (3) The aerosol product according to (1) or (2), wherein the water content in the original solution is 60-99% by mass.

[0082] Due to this composition, the aerosol product is unlikely to produce flame spread even when sprayed into a flame. Furthermore, when the aerosol product is sprayed in a confined space, it is unlikely to ignite even if a source of ignition is nearby.

[0083] (4) The aerosol product according to any one of (1) to (3), wherein the above-mentioned raw liquid contains a surfactant.

[0084] With this composition, aerosol products can easily achieve a more stable spray pattern. In particular, when aerosol products contain hydrofluoroolefins, they can easily achieve a stable spray pattern with a uniform composition through oil emulsification.

[0085] (5) The aerosol product according to any one of (1) to (4), wherein the above-mentioned raw liquid contains an alcohol, and the content of the alcohol in the raw liquid is 0.5 to 20% by mass.

[0086] With this composition, aerosol products can easily improve the drying properties of the sprayed material. As a result, aerosol products offer a superior user experience.

[0087] (6) The aerosol product according to any one of (1) to (5), wherein the above-mentioned stock solution contains a hair styling agent.

[0088] Due to this composition, when aerosol products are sprayed onto hair, they disperse less and adhere easily. Furthermore, the aerosol products dry moderately on the hair, resulting in excellent styling.

[0089] Example

[0090] The present invention will now be described in more detail with reference to the embodiments. The present invention is not limited to these embodiments in any way.

[0091] Prepare stock solutions A through D according to the formulas (unit: mass%) recorded in Table 1 below.

[0092] [Table 1]

[0093] Table 1

[0094] Raw material name Stock solution A Stock solution B Stock solution C Stock solution D Water 93.0 85.0 83.3 77.0 Ethanol 7.0 15.0 16.7 23.0 Total 100.0 100.0 100.0 100.0

[0095] (Examples 1-2, Comparative Examples 1-2)

[0096] According to the formula (unit: mass%) listed in Table 2 below, fill the stock solution into the aluminum container body and install the valve. Pass the valve through the valve stem (valve stem bypass hole: 0.13mm). 2 (fill with dimethyl ether to make aerosol products.)

[0097] [Table 2]

[0098] Table 2

[0099]

[0100] The following evaluation methods were used to determine the spraying state, the amount of combustible material sprayed (g / s), and the time to reach the lower explosive limit concentration (s / m) of the aerosol products of Examples 1-2 and Comparative Examples 1-2. 3 The flame length was measured and evaluated. The results are shown in Table 2.

[0101] (In spray mode)

[0102] Adjust the aerosol product to 20°C and spray it into the space. Evaluate it according to the following evaluation criteria.

[0103] (Evaluation Criteria)

[0104] ◎: The spray can be sprayed in a mist form until the very end.

[0105] ○: The spray can be stably extended in a mist form until the contents of the aerosol composition are at least 10% by mass. If the contents of the aerosol composition are less than 10% by mass, the extension becomes narrower.

[0106] △: The spray can be stably extended in a mist form until the contents of the aerosol composition are at least 25% by mass. If the contents of the aerosol composition are less than 25% by mass, the extension becomes narrower.

[0107] ×: The sprayed material cannot be sprayed to the end, resulting in a residue of more than 5% by mass.

[0108] (Amount of combustible material injected)

[0109] Adjust the aerosol product to 20°C, measure the spray volume of the aerosol composition over 5 seconds, and calculate the spray volume of combustible material (g / second) from the spray volume.

[0110] (Time to reach the lower limit of explosive concentration)

[0111] Based on the United Nations recommendations on the transport of dangerous materials, the manual on test methods and judgment criteria, item 31.5, concerning the ignition test in a confined space, involves transferring an aerosol product adjusted to 20°C to a cylindrical test container (internal volume: 0.2 m³) containing a burning candle. 3 The contents were sprayed into the space, the time required for ignition and the amount of sprayed were measured, and the result was calculated for a space of 1m. 3 Time to reach the lower explosive limit concentration (seconds / m³) 3 Additionally, the time to reach the lower explosive limit concentration is set at 300 seconds per cubic meter. 3 The above situation is rated as ○, meaning it will be less than 300 seconds / m. 3 The evaluation for this situation is ×.

[0112] (Flame length)

[0113] Adjust the aerosol product to 20°C and spray a flame 5cm high from 15cm behind. Evaluate the flame extension (flame length) according to the following evaluation criteria.

[0114] (Evaluation Criteria)

[0115] None: Flame length not confirmed.

[0116] Yes: Flame length confirmed.

[0117] As shown in Table 2, the aerosol products of Examples 1-2 of the present invention can be sprayed in a mist form to the end, with a small amount of combustible material, and the time to reach the lower explosive limit concentration is more than 300 seconds, and the flame length is not confirmed. On the other hand, the aerosol products of Comparative Examples 1-2, which have a high content of dimethyl ether, reach the lower explosive limit concentration in less than 300 seconds, and the flame length is confirmed.

[0118] Prepare stock solutions E to G according to the formulas (unit: mass%) recorded in Table 3 below.

[0119] [Table 3]

[0120] Table 3

[0121] Raw material name Stock solution E Stock solution F Stock solution G Water 99.5 94.5 89.5 PEG-40 hardened castor oil (*1) 0.5 0.5 0.5 Ethanol - 5.0 10.0 Total 100.0 100.0 100.0

[0122] (*1)NIKKOL HCO-40 (trade name), manufactured by Nikko Chemical Co., Ltd.

[0123] (Examples 3-10, Comparative Example 3)

[0124] According to the formula (unit: mass%) described in Table 4 below, fill the stock solution into the aluminum container body and install the valve. Pass the valve through the valve stem (valve stem bypass hole: 0.13mm). 2Aerosol products are made by filling dimethyl ether and hydrofluoroolefin (trans-1-chloro-3,3,3-trichloropropene (HFO-1233zd(E))).

[0125] [Table 4]

[0126]

[0127] As shown in Table 4, the aerosol products of Examples 3 to 10 of the present invention can be sprayed in a roughly mist-like manner to the end, with a small amount of combustible material, and the time to reach the lower explosive limit concentration is more than 300 seconds, and no flame length is confirmed. On the other hand, although the flame length of the aerosol product of Comparative Example 3, which does not have a gas phase inlet, is not confirmed, the amount of combustible material sprayed is large, and the time to reach the lower explosive limit concentration is less than 300 seconds. Therefore, it can be seen that if the aerosol product of Comparative Example 3 is sprayed in a confined space, it may ignite if there is an ignition source nearby.

[0128] (Formulation Example 1) Hairspray

[0129] According to the formula (unit: mass%) described in Table 5 below, the stock solution H prepared according to the following formula (unit: mass%) is filled into the aluminum container body, and a valve is installed. The valve is passed through the valve stem (valve stem bypass hole: 0.13mm). 2 (Aerosol products are made by filling dimethyl ether and hydrofluoroolefin.)

[0130]

[0131] (*3)AMPHOMER28-4910 (product name), manufactured by Nouryon Japan Co., Ltd.

[0132] (*4) Neosolue-AquaS (trade name), manufactured by Nippon Seika Co., Ltd.

[0133] [Table 5]

[0134] Table 5

[0135]

[0136] As shown in Table 5, the aerosol product (hairspray) of Formulation Example 1 can be sprayed in a mist form to the very end, with a low amount of combustible material, and the time to reach the lower explosive limit concentration is more than 300 seconds, and the flame length was not confirmed. Furthermore, when the aerosol product (hairspray) of Formulation Example 1 is sprayed onto the hair, it disperses less and adheres easily. Additionally, the aerosol product (hairspray) of Formulation Example 1 dries moderately, resulting in excellent hair styling properties.

[0137] (Formula Example 2) Hairspray

[0138] According to the formula (unit: mass%) described in Table 6 below, fill the stock solution I prepared according to the following formula (unit: mass%) into the aluminum container body and install the valve. Pass the valve through the valve stem (valve stem bypass hole: 0.17mm). 2 It is used to fill dimethyl ether to make aerosol products. The solid content of hair styling products is 6.5%.

[0139]

[0140] (*5) Yodosol GH256F (trade name), 29% solids, manufactured by Nouryon Japan Co., Ltd.

[0141] (*6) DynamX (product name), 28% solids, manufactured by Nouryon Japan Co., Ltd.

[0142] [Table 6]

[0143] Table 6

[0144]

[0145] As shown in Table 6, the aerosol product (hairspray) of Formulation Example 2 can be sprayed in a mist form to the very end, with a low amount of combustible material, and the time to reach the lower explosive limit concentration is more than 300 seconds, and the flame length was not confirmed. Furthermore, when the aerosol product (hairspray) of Formulation Example 2 is sprayed onto the hair, it disperses less and adheres easily. Additionally, the aerosol product (hairspray) of Formulation Example 2 dries moderately, resulting in excellent hair styling properties.

Claims

1. An aerosol product comprising an aerosol composition and an aerosol container, the aerosol container having a valve and a spraying member, and being filled with the aerosol composition. The aerosol composition comprises a stock solution and a dimethyl ether, wherein the stock solution comprises water. The content of the dimethyl ether in the aerosol composition is 20-30% by mass. The valve includes a housing, which has a gas phase inlet for introducing the gas phase portion of the aerosol composition, and a liquid phase inlet on the bottom surface of the housing. The spraying component has spray holes formed on it. The aerosol composition contains a combustible material injected at a rate of 0.05–0.24 g / second. in, The water content in the original solution is 60-99% by mass. The cross-sectional area of ​​the gas phase inlet is 0.01 to 0.20 mm. 2 , The cross-sectional area of ​​the liquid phase inlet hole is 0.1 to 5.0 mm. 2 , The cross-sectional area of ​​the injection hole is 0.05 to 0.3 mm. 2 .

2. The aerosol product according to claim 1, wherein, The aerosol composition contains 3 to 30% by mass of hydrofluoroolefins with a boiling point of 10 to 40°C.

3. The aerosol product according to claim 1 or 2, wherein, The stock solution contains a surfactant.

4. The aerosol product according to claim 1 or 2, wherein, The stock solution contains alcohol. The alcohol content in the original solution is 0.5-20% by mass.

5. The aerosol product according to claim 1 or 2, wherein, The stock solution contains a hair styling agent.

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