CN117597411A

CN117597411A - Foamable aerosol composition, foamable aerosol product, and method for suppressing combustibility

Info

Publication number: CN117597411A
Application number: CN202280047581.7A
Authority: CN
Inventors: 福积京子; 片冈公雄; 宫本英俊
Original assignee: Daizo Corp
Current assignee: Daizo Corp
Priority date: 2021-07-26
Filing date: 2022-07-25
Publication date: 2024-02-23
Also published as: JP2024013587A

Abstract

The invention provides a foamable aerosol composition, a foamable aerosol product and a method for suppressing combustibility when a foam formed by ejecting an open flame is ignited. The foamable aerosol composition is composed of a stock solution and a liquefied gas, wherein the stock solution contains a flame retardant component and water, and the total amount of the combustible components contained in the stock solution and the liquefied gas is 1 to 30% by mass in the foamable aerosol composition.

Description

Foamable aerosol composition, foamable aerosol product, and method for suppressing combustibility

Technical Field

The present invention relates to a foamable aerosol composition and a foamable aerosol article. More specifically, the present invention relates to a foamable aerosol composition, a foamable aerosol product, and a method of suppressing combustibility, which are capable of suppressing combustibility when a foam formed by ejecting an open flame is ignited.

Background

Conventionally, a foamable aerosol composition that is discharged in a foam form has been developed (for example, patent document 1). Since the foamable aerosol composition is excellent in foamability, liquefied petroleum gas is used as a propellant. The liquefied petroleum gas is a flammable liquefied gas. Therefore, the foam formed by spraying to the outside fires if it approaches an open flame. When a high flame column is generated in the case where the burning time is long, the foam after ignition is liable to spread around. In recent years, in order to improve safety in storage and transportation, an aerosol composition having low combustibility has been demanded.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2018-115267

Disclosure of Invention

The invention described in patent document 1 can mold a foam into a predetermined shape (rose) on an ejection target such as a palm by adjusting the foam to a specific hardness. However, the foamable aerosol product described in patent document 1 has room for improvement in terms of suppression of combustibility of foam.

The present invention has been made in view of such conventional problems, and an object thereof is to provide a foamable aerosol composition, a foamable aerosol product, and a method of suppressing combustibility, which are capable of suppressing combustibility when foam formed by ejecting open flame is ignited.

The foamable aerosol composition according to one embodiment of the present invention for solving the above problems is a foamable aerosol composition comprising: the foaming aerosol composition comprises a stock solution and a liquefied gas, wherein the stock solution contains a flame retardant component and water, and the total amount of the combustible components contained in the stock solution and the liquefied gas is 1 to 30 mass% of the foaming aerosol composition.

Further, an expandable aerosol product according to an embodiment of the present invention to solve the above-described problems is an expandable aerosol product comprising: comprising the foamable aerosol composition described above.

Further, a method for suppressing combustibility according to an embodiment of the present invention for solving the above-described problems is a method for suppressing combustibility as follows: a method for suppressing combustibility of a spray, comprising spraying an aerosol composition to the outside to form a spray, wherein the aerosol composition comprises a liquid stock and a liquefied gas, the liquid stock contains a foam-curing component and water, the total content of combustible components contained in the liquid stock and the liquefied gas is 5 to 30 mass% in the foamable aerosol composition, and the hardness of the foam formed when sprayed to the outside is adjusted to 100 to 2000mN (20 ℃).

Detailed Description

The foamable aerosol composition according to one embodiment of the present invention is composed of a liquid stock containing a flame retardant component and water and a liquefied gas. The total amount of the combustible components contained in the raw liquid and the liquefied gas is 1 to 30% by mass in the foamable aerosol composition. The flame retardant component is characterized by being a foam curing component (first embodiment) or a resin (second embodiment). Hereinafter, each embodiment will be described in detail. The flame retardant component in this embodiment has the following effects: even if the open flame is brought close to the foam formed by the ejection when the combustible component is contained in the aerosol composition at a specific concentration, the foam will not catch fire, or even if the foam catches fire, the flame height will be shortened or the burning time will be shortened.

Foamable aerosol composition relating to first embodiment

In the foamable aerosol composition (hereinafter, also referred to as aerosol composition) according to one embodiment of the present invention, the flame retardant component is a foam curing component. The total content of the combustible components contained in the raw liquid and the liquefied gas is 5 to 30% by mass in the foamable aerosol composition. The hardness of the foam formed when the foam is discharged to the outside is 100 to 2000mN (20 ℃). Hereinafter, each will be described.

Stock solution

The stock solution contains a foam curing component and water. When the stock solution is discharged to the outside, the liquefied gas is vaporized to foam, so that a liquid film of the foam is formed, and an effect of the active ingredient is imparted to an object such as hair or skin.

Foam curing component

The foam curing component is used to control the hardness of the foam formed by ejecting the aerosol composition, and to suppress the diffusion of the gasification gas of the combustible component from the inside of the foam when the foam catches fire, thereby obtaining the combustibility suppressing effect.

The foam curing component is not particularly limited. If one example is given, the foam curing component is preferably at least one selected from the group consisting of fatty acid soaps, amino acid soaps, higher alcohols and water-soluble polymers. By including these components in the foam curing component, the aerosol composition can easily adjust the hardness of the foam formed by ejection, and can easily obtain the effect of suppressing combustibility.

The fatty acid soap is not particularly limited. Examples of the fatty acid soap include fatty acids having 10 to 20 carbon atoms such as lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid, linoleic acid, and linolenic acid, and saponified products of organic bases such as triethanolamine, diethanolamine, monoethanolamine, diisopropanolamine, 2-amino-2-methyl-1-propanol (AMP), 2-amino-2-methyl-1, and 3-propanediol (AMPD), and inorganic bases such as potassium hydroxide, sodium hydroxide, and ammonium hydroxide.

In the case of blending a fatty acid soap, the content of the fatty acid soap is not particularly limited. If an example is given, the content of the fatty acid soap in the aerosol composition is preferably 0.1 mass% or more, more preferably 0.5 mass% or more. The content of the fatty acid soap in the aerosol composition is preferably 20% by mass or less, more preferably 15% by mass or less. When the content of the fatty acid soap is within the above range, the hardness of the foam can be easily adjusted in the aerosol composition, and the combustibility inhibition effect can be easily obtained.

The amino acid soap is not particularly limited. As an example, the amino acid soap may be N-acyl glutamate such as N-coconut fatty acid acyl-L-glutamic acid triethanolamine, N-coconut fatty acid acyl-L-glutamic acid potassium salt, N-coconut fatty acid acyl-L-sodium glutamate, N-lauroyl-L-glutamic acid triethanolamine, N-lauroyl-L-potassium glutamate, N-lauroyl-L-sodium glutamate, N-acyl glycinate such as N-myristoyl-L-potassium glutamate, N-myristoyl-L-sodium glutamate and N-stearoyl-L-sodium glutamate, N-acyl glycinate such as N-coconut fatty acid acyl glycinate and N-coconut fatty acid acyl glycinate sodium; n-acylalanine salts such as N-coconut fatty acid acyl-DL-alanine triethanolamine.

In the case of compounding an amino acid soap, the content of the amino acid soap is not particularly limited. If an example is given, the content of the amino acid soap in the aerosol composition is preferably 0.1 mass% or more, more preferably 0.3 mass% or more. The content of the amino acid soap in the aerosol composition is preferably 10% by mass or less, more preferably 5% by mass or less. When the content of the amino acid soap is within the above range, the hardness of the foam can be easily adjusted, and the combustibility inhibition effect can be easily obtained.

The higher alcohol is not particularly limited. As examples, higher alcohols are lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, lanolin alcohol, hexyldodecyl alcohol, cetylstearyl alcohol, octyldodecyl alcohol, etc.

In the case of blending a higher alcohol, the content of the higher alcohol is not particularly limited. If an example is given, the content of the higher alcohol in the aerosol composition is preferably 0.1 mass% or more, more preferably 0.3 mass% or more. The content of the higher alcohol in the aerosol composition is preferably 10% by mass or less, more preferably 8% by mass or less. When the content of the higher alcohol is within the above range, the hardness of the foam can be easily adjusted, and the combustibility suppressing effect can be easily obtained.

The water-soluble polymer is not particularly limited. Examples of the water-soluble polymer include (PEG-240/decyl tetradecyl polyether-20/HDI) copolymer, cellulose nanofiber, cellulose-based polymer such as hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methylcellulose, sodium carboxymethyl cellulose, gum such as xanthan gum, carrageenan, gum arabic, tragacanth, cationized guar gum, gellan gum, polyurethane, dextran, sodium carboxymethyl dextran, dextrin, pectin, sodium alginate, sodium hyaluronate, polyvinyl alcohol, and carboxyvinyl polymer.

In the case of blending a water-soluble polymer, the content of the water-soluble polymer is not particularly limited. If an example is given, the content of the water-soluble polymer in the aerosol composition is preferably 0.01 mass% or more, more preferably 0.05 mass% or more. The content of the water-soluble polymer in the aerosol composition is preferably 5% by mass or less, more preferably 3% by mass or less. When the content of the water-soluble polymer is within the above range, the hardness of the foam can be easily adjusted, and the combustibility inhibition effect can be easily obtained.

Water

Water is used as a solvent for the foam curing component, the effective component, and the like. By including water, the aerosol composition readily forms a foam having a specific hardness, and the combustibility of the foam can be reduced.

The water is not particularly limited. The water may be purified water, ion-exchanged water, physiological saline, deep seawater, or the like, as examples.

The water content is not particularly limited. If an example is given, the water content in the aerosol composition is preferably 50% by mass or more, more preferably 60% by mass or more. In addition, the water content in the aerosol composition is preferably 95% by mass or less, and more preferably 93% by mass or less. By the content of water falling within the above range, the aerosol composition is easy to form a foam having a specific hardness, and the combustibility of the foam can be reduced.

Any component

The stock solution may contain, in addition to the foam curing agent and water, various active ingredients, surfactants, monohydric alcohols, polyhydric alcohols, oils, highly volatile solvents, powders, and the like.

The active ingredient may be appropriately selected depending on the purpose, etc. of the aerosol composition. Examples of the active ingredient include various perfumes such as natural perfume and synthetic perfume, and amphoteric resins such as dialkylaminoethyl (meth) acrylate-alkyl (meth) acrylate copolymer, vinyl acetate-crotonic acid copolymer, N-methacryloyloxyethyl N, N-dimethylammonium- α -N-methylcarboxybetaine-alkyl methacrylate copolymer, octylamide acrylate-hydroxypropyl acrylate-butylaminoethyl methacrylate copolymer; acrylic alkanolamine, acrylic acid alkyl ester copolymer emulsion, acrylic acid-acrylic acid acrylamide-ethyl acrylate copolymer, acrylic acid alkyl drum-methacrylic acid-silicon copolymer, acrylic acid octylamide-acrylic acid ester copolymer, vinyl acetate-crotonic acid copolymer, crotonic acid-vinyl acetate-vinyl neodecanoate copolymer, anionic resins such as polyurethane, polyvinylpyrrolidone-N, N-dimethylaminoethyl methacrylate copolymer diethyl sulfate (polyquaternium-11), polyvinylpyrrolidone-N, N-dimethylaminoethyl methacrylate copolymer dimethyl sulfate, polyvinylpyrrolidone-N, hair setting agents for cationic resins such as N-dimethylaminoethyl methacrylic acid copolymer hydrochloride, dimethyldiallylammonium chloride-acrylamide copolymer (polyquaternium-7), o- [ 2-hydroxy-3- (trimethylammonio) propyl ] hydroxyethyl cellulose chloride (polyquaternium-10), o- [ 2-hydroxy-3- (lauryldimethylammonium) propyl ] hydroxyethyl cellulose chloride (polyquaternium-24), hydroxyethylcellulose dimethylallylammonium chloride (polyquaternium-4), and vitamins such as l-menthol, camphor, mint oil and other cooling agents, retinol acetate, retinol palmitate, calcium pantothenate, magnesium ascorbyl phosphate, sodium ascorbate, dl-alpha-tocopherol, tocopheryl acetate, tocopherol hydrochloride, dibenzoylmethylamine, riboflavin, and mixtures thereof, antioxidants such as ascorbic acid, α -tocopherol, dibutylhydroxytoluene, and butylhydroxyanisole, amino acids such as glycine, alanine, leucine, serine, tryptophan, cysteine, methionine, aspartic acid, glutamic acid, arginine, collagen, hyaluronic acid, caronic acid, sodium lactate, dl-pyrrolidone carboxylate, moisturizing agents such as keratin, casein, lecithin, urea, preservatives such as parahydroxybenzoate, sodium benzoate, potassium sorbate, and phenoxyethanol, sterilizing agents such as benzalkonium chloride, benzethonium chloride, chlorhexidine hydrochloride, and parachlorometacresol, royal jelly extract, peony extract, towel gourd extract, rose extract, lemon extract, aloe extract, rhizoma Acori Graminei extract, eucalyptus extract, sage extract, tea extract, seaweed extract, placenta extract, silk extract, and other extracts astringents such as zinc oxide, aluminum hydroxyallate, tannic acid, citric acid, lactic acid, etc., antiinflammatory agents such as allantoin, glycyrrhetinic acid, dipotassium glycyrrhizinate, etc., antiinflammatory agents such as azulene, lauric acid methacrylate, methyl benzoate, methyl phenylacetate, geranyl chloride, myristic acid acetophenone, benzyl acetate, benzyl propionate, green tea extract, etc., deodorant agents such as diethyl aminohydroxybenzoyl hexyl benzoate, diethyl aminohydroxybenzoate, etc ultraviolet absorbent such as 2-ethylhexyl p-methoxycinnamate, ethylhexyl triazone, oxybenzone, hydroxybenzophenone sulfonic acid, sodium dihydroxybenzophenone sulfonate, dihydroxybenzophenone, ultraviolet scattering agent such as zinc oxide, titanium oxide, octyl trimethoxysilane coated titanium oxide, whitening agent such as arbutin and kojic acid, antiperspirant such as chlorohydroxy aluminum, isopropyl methyl phenol, methyl salicylate, indomethacin, and other ultraviolet light scattering agent, and anti-inflammatory analgesic agents such as felbinac and tyrosol.

In the case of blending the active ingredient, the content of the active ingredient is not particularly limited. If an example is given, the content of the active ingredient in the aerosol composition is preferably 0.1 mass% or more, more preferably 0.3 mass% or more. The content of the active ingredient in the aerosol composition is preferably 20% by mass or less, more preferably 15% by mass or less. The content of the active ingredient is within the above range, whereby the effect of blending the active ingredient can be easily obtained.

The surfactant is appropriately blended for the purpose of adjusting foamability, hardness of foam, retention, and the like of the aerosol composition.

The surfactant is not particularly limited. Examples of the surfactant include nonionic surfactants such as 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, polyoxyethylene sorbitol fatty acid ester, anionic surfactants other than fatty acid soap such as alkyl sulfate, polyoxyethylene alkyl ether sulfate, alkyl phosphate, polyoxyethylene alkyl ether phosphate, etc., and cationic surfactants such as alkyl ammonium salt, polyoxyethylene alkylamine; amphoteric surfactants such as alkyl betaines and fatty acid amidopropyl betaines; and silicone-based surfactants. These surfactants are not included in the combustible component of the present embodiment.

In the case of blending a surfactant, the content of the surfactant is not particularly limited. The content of the surfactant in the aerosol composition is preferably 0.1 mass% or more, more preferably 0.3 mass% or more, if an example is given. The content of the surfactant in the aerosol composition is preferably 10 mass% or less, more preferably 8 mass% or less. When the content of the surfactant is within the above range, the effect by blending the surfactant can be easily obtained.

The alcohol is suitably blended as a solvent for dissolving the water-insoluble active ingredient.

The alcohol is not particularly limited. The alcohol is a monohydric alcohol having 2 to 3 carbon atoms such as ethanol and isopropanol. In this embodiment, these alcohols are contained in the combustible component.

In the case of compounding an alcohol, the content of the alcohol is not particularly limited. If an example is given, the content of the alcohol in the aerosol composition is preferably 0.1 mass% or more, more preferably 1 mass% or more. The content of the alcohol in the aerosol composition is preferably 20% by mass or less, more preferably 15% by mass or less. When the alcohol content is within the above range, the aerosol composition can obtain a burning suppressing effect due to the hardness of the foam, and can easily contain an active ingredient. In the case where the content of the alcohol exceeds 20% by mass in the aerosol composition, the foam is not easily hardened and the combustibility suppressing effect is not easily obtained.

The polyol is appropriately blended for the purpose of adjusting foamability, drying property, and the like of the aerosol composition.

The polyhydric alcohol is not particularly limited. If one example is given, the polyol is propylene glycol, 1, 3-butanediol, hexanediol, dipropylene glycol, glycerol, diglycerol, and the like.

In the case of blending a polyol, the content of the polyol is not particularly limited. If an example is given, the content of the polyol in the aerosol composition is preferably 0.1 mass% or more, more preferably 0.5 mass% or more. The content of the polyol in the aerosol composition is preferably 20 mass% or less, more preferably 15 mass% or less. By the content of the polyhydric alcohol being within the above range, the aerosol composition is easy to adjust foamability and drying property.

The oil agent is appropriately blended for the purpose of adjusting foamability of the aerosol composition, hardness of foam, removal of oily dirt, and the like.

The oil agent is not particularly limited. Examples of the oils include ester oils such as isopropyl myristate, isopropyl palmitate, diisopropyl adipate, glyceryl tris (caprylate/caprate), diethoxyethyl succinate, methylpentanediol dipivalate, neopentyl glycol dicaprate, hydrocarbon oils such as liquid paraffin, kerosene, squalene, squalane, isoparaffin, 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, palm oil and the like, methyl polysiloxane, methylphenyl polysiloxane, methyl polycyclosiloxane and the like. These oils are contained in the combustible component of the present embodiment.

In the case of blending the oil, the content of the oil is not particularly limited. If an example is given, the content of the oil agent in the aerosol composition is preferably 0.1 mass% or more, more preferably 0.3 mass% or more. The content of the oil agent in the aerosol composition is preferably 10 mass% or less, more preferably 8 mass% or less. When the content of the oil agent is within the above range, the effect due to blending of the oil agent can be easily obtained.

The highly volatile solvent is suitably used for the purpose of adjusting the foamability of the aerosol composition, and the like.

The high-volatility solvent is not particularly limited. As examples, the highly volatile solvents are trans-1-chloro-3, 3-trifluoropropene (HFO-1233 zd (E), boiling point 19 ℃), cis-1-chloro-3, 3-trifluoropropene (HFO-1233 zd (Z), boiling point 39 ℃), cis-1-chloro-2, 3-tetrafluoroolefin (HFO-1224 yd (Z), boiling point 15 ℃) and the like, and hydrofluoroolefins having a boiling point of 10 to 40 ℃. These highly volatile solvents are nonflammable solvents, and are not included in the flammable component of the present embodiment.

In the case of blending a high-volatility solvent, the content of the high-volatility solvent is not particularly limited. If an example is given, the content of the highly volatile solvent in the aerosol composition is preferably 0.1 mass% or more, more preferably 1 mass% or more. The content of the high-volatility solvent in the aerosol composition is preferably 20 mass% or less, more preferably 15 mass% or less. By the content of the highly volatile solvent being within the above range, the aerosol composition is easy to adjust foamability.

The powder is suitably used for the purpose of improving the feeling of use and the like.

The powder is not particularly limited. The powder is talc, silica, zeolite, kaolin, mica, magnesium carbonate, calcium carbonate, zinc silicate, magnesium silicate, aluminum silicate, calcium silicate, or the like, if one example is given.

In the case of blending the powder, the content of the powder is not particularly limited. If an example is given, the content of the powder in the aerosol composition is preferably 0.1 mass% or more, more preferably 0.3 mass% or more. The content of the powder in the aerosol composition is preferably 5% by mass or less, more preferably 3% by mass or less. When the content of the powder is within the above range, the effect of blending the powder can be easily obtained.

The method for preparing the stock solution is not particularly limited. The stock solution can be prepared by a conventionally known method. For example, the stock solution can be prepared by adding any of the foam curing component and the active component, surfactant, alcohol, etc. to water or warm water.

The content of the stock solution in the aerosol composition is preferably 70 mass% or more, more preferably 75 mass% or more. The content of the stock solution in the aerosol composition is preferably 97% by mass or less, and more preferably 95% by mass or less. When the content of the stock solution is within the above range, the foam quality of the aerosol composition is excellent, and a foam having a predetermined hardness is easily formed, so that the combustibility suppressing effect is easily obtained.

Liquefied gas

The liquefied gas is liquefied in the aerosol container, and if discharged to the outside, the liquefied gas is gasified to increase the volume, and the raw liquid is foamed to form foam.

The liquefied gas is not particularly limited. In the case of an example, the liquefied gas is preferably a flammable liquefied gas, more preferably liquefied petroleum gas, dimethyl ether or a mixture thereof, from the viewpoint of forming a foam having a fine texture and excellent foam quality and easily forming a predetermined hardness.

The content of the flammable liquefied gas in the aerosol composition is preferably 3 mass% or more, more preferably 5 mass% or more. The content of the flammable liquefied gas in the aerosol composition is preferably 30 mass% or less, and more preferably 25 mass% or less. When the content of the flammable liquefied gas is within the above range, the aerosol composition has excellent foam quality, and a foam having a predetermined hardness is easily formed, so that a flammability suppressing effect is easily obtained.

It should be noted that a hydrofluoroolefin having a boiling point of less than 5℃such as trans-1, 3-tetrafluoroprop-1-ene (HFO-1234 ze, boiling point-19 ℃) and trans-2, 3-tetrafluoroprop-1-ene (HFO-1234 yf, boiling point-29 ℃) may be mixed with a flammable liquefied gas within a range that does not reduce the hardness of the foam or the foam.

The foamable aerosol composition may be pressurized with a compressed gas. The compressed gas is not particularly limited. The compressed gas is nitrogen, air, oxygen, hydrogen, carbon dioxide, nitrous oxide, or the like, if one example is given.

When the compressed gas is used, the compressed gas is preferably filled so that the pressure in the aerosol container at 25 ℃ becomes 0.4MPa or more, and more preferably 0.45MPa or more. The compressed gas is preferably filled so that the pressure in the aerosol container at 25 ℃ is 0.7MPa or less, more preferably 0.65MPa or less. By filling the compressed gas so that the pressure falls within the above range, the compressed gas can be stably discharged even at low temperatures.

In the aerosol composition of the present embodiment, the total content of the combustible components contained in the raw liquid and the liquefied gas is 5% by mass or more, preferably 7% by mass or more, in the aerosol composition. The total content of the combustible components is not more than 30% by mass, preferably not more than 25% by mass. When the total content of the combustible components is less than 5% by mass, the foamability of the aerosol composition is deteriorated. On the other hand, when the total content of the combustible components exceeds 30 mass%, if the aerosol composition fires by causing the open flame to approach the foam formed by the discharge, the combustion continues or the flame height increases.

The hardness of the foam formed when the aerosol composition of the present embodiment is discharged to the outside may be 100mN (20 ℃) or more, and is preferably 105mN (20 ℃) or more. The hardness of the foam is not more than 2000mN (20 ℃ C.), preferably not more than 1000mN (20 ℃ C.). When the hardness of the foam is less than 100mN (20 ℃), the aerosol composition cannot suppress the diffusion of the gasified gas of the combustible component inside the foam, and the combustible component easily leaks out of the foam. As a result, the foam is easily burned for a long period of time or a large flame is generated. On the other hand, when the hardness of the foam exceeds 2000mN (20 ℃), the foam is less likely to be smeared or the like, and the feeling of use is likely to be lowered.

The foamable aerosol product and the method of suppressing combustibility according to the first embodiment

A foamable aerosol product according to an embodiment of the present invention (hereinafter, also referred to as an aerosol product) includes the foamable aerosol composition described above. The aerosol article of the present embodiment can be prepared by filling an aerosol composition. Specifically, an aerosol composition can be prepared by filling a raw liquid in a container body and fixing a valve, filling a liquefied gas from the valve and by mixing the raw liquid and the liquefied gas, and an aerosol article filled with the aerosol composition can be prepared.

The container body is a container filled with an aerosol composition, and is a bottomed tubular shape. A valve is attached to an opening of the container body.

The material of the container body is not particularly limited. As an example, the material of the container body is aluminum, a metal such as tin-plated iron, various synthetic resins, pressure-resistant glass, or the like.

The valve is a member for closing and sealing the opening of the container body. The valve mainly includes a housing that is held in a valve cup attached to an opening of a container body, a stem that is formed with a stem hole that communicates the inside and outside of the container body, and stem rubber attached to the periphery of the stem hole and closing the stem hole. The housing houses the valve stem, the valve stem rubber, and a spring for urging the valve stem upward. A spray member for spraying the aerosol composition is mounted on the upper end of the valve stem.

The injection member is a member for injecting an aerosol composition by operating the opening and closing of the valve, and is attached to the upper end of the valve stem. The injection member mainly includes a nozzle portion having an injection hole formed therein, and an operation portion operated by a user's finger or the like. The aerosol composition is injected from the injection hole. The number and shape of the injection holes are not particularly limited. The number of the injection holes may be plural. The shape of the injection hole may be a substantially circular shape, a substantially square shape, or the like.

In the aerosol product of the present embodiment, if the ejection member is depressed, the stem of the valve is depressed downward. Thus, the valve stem rubber flexes downward, and the valve stem hole opens. As a result, the inside of the container body is communicated with the outside. If the inside of the container body communicates with the outside, the aerosol composition is sucked into the housing by a pressure difference between the inside and outside of the container body, and then sent to the injection member through the stem hole, the in-stem passage, and then injected from the injection hole. The discharged aerosol composition is foamed on the target surface (for example, an arm or the like) to form a foam.

In addition, by using the aerosol product of the present embodiment, combustibility of the ejected material is suppressed. That is, the combustibility inhibition method according to an embodiment of the present invention is a combustibility inhibition method for inhibiting combustibility of an ejection product. The combustibility suppressing method ejects the aerosol composition to the outside to form an ejected product. The aerosol composition is composed of a stock solution containing a foam-curing component and water and a liquefied gas. The total content of the combustible components contained in the raw liquid and the liquefied gas is 5 to 30% by mass in the foamable aerosol composition. The hardness of the foam formed when the foam is discharged to the outside is adjusted to 100 to 2000mN (20 ℃). According to such a method of suppressing combustibility, the foam can suppress the diffusion of the gasified gas of the combustible component from the inside of the foam and can suppress combustibility (combustion time, height of flame column) even when the foam catches fire in the vicinity of open fire, as compared with the case of using the conventional aerosol composition other than the aerosol composition of the above embodiment.

The foamable aerosol composition according to the second embodiment

In the foamable aerosol composition (hereinafter, also referred to as aerosol composition) according to one embodiment of the present invention, the stock solution further contains a surfactant. In addition, the flame retardant component is a resin. The liquefied gas contains a hydrofluoroolefin. Hereinafter, each will be described.

Stock solution

The stock solution contains resin, surfactant and water. When the stock solution is discharged to the outside, the liquefied gas is vaporized to foam, so that a liquid film of the foam is formed, and an effect of the active ingredient is imparted to an object such as hair or skin.

The resin is not particularly limited. The resin may be a cationic resin, an anionic resin, an amphoteric resin, a nonionic resin, an emulsion resin, or the like, if one example is given. Of these, the resin preferably contains at least either a cationic resin or an anionic resin. Thus, the foamable aerosol composition is more excellent in the combustion suppressing effect.

More specifically, the cationic resin is polyvinylpyrrolidone-N, N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate (polyquaternium-11), polyvinylpyrrolidone-N, N-dimethylaminoethyl methacrylic acid copolymer dimethyl sulfate, polyvinylpyrrolidone-N, N-dimethylaminoethyl methacrylic acid copolymer hydrochloride, dimethyldiallylammonium chloride-acrylamide copolymer (polyquaternium-7), o- [ 2-hydroxy-3- (trimethylammonium) propyl ] hydroxyethyl cellulose (polyquaternium-10), o- [ 2-hydroxy-3- (lauryl dimethylammonium) propyl ] hydroxyethyl cellulose (polyquaternium-24), hydroxyethylcellulose dimethylallyl ammonium chloride (polyquaternium-4) or the like.

The anionic resin is (acrylic acid ester/diacetone acrylamide) copolymer AMP or other acrylic acid alkanolamine, acrylic acid-acrylic acid acrylamide-ethyl acrylate copolymer, acrylic acid alkyl-methacrylic acid-silicon copolymer, acrylic acid octylamide-acrylic acid ester copolymer, vinyl acetate-crotonic acid copolymer, crotonic acid-vinyl acetate-neodecanoic acid vinyl copolymer, polyurethane or the like.

The amphoteric resin is dialkylaminoethyl (meth) acrylate-alkyl (meth) acrylate copolymer, vinyl acetate-crotonic acid copolymer, N-methacryloxyethyl N, N-dimethylammonium-alpha-N-methylcarboxybetaine-alkyl methacrylate copolymer, octylamide acrylate-hydroxypropyl-butylaminoethyl methacrylate copolymer, etc.

The nonionic resin is a hydroxyethyl acrylate-butyl acrylate-methoxyethyl acrylate copolymer such as a vinyl pyrrolidone-vinyl acetate copolymer, a hydroxyethyl acrylate/methoxyethyl acrylate copolymer, a dimethylacrylamide/hydroxyethyl acrylate/methoxyethyl acrylate copolymer, or the like.

The emulsion resin is an alkyl acrylate copolymer emulsion, an alkyl acrylate-styrene copolymer emulsion, and the like.

In the case of using a resin in which water is used as a solvent, even if the stock solution contains alcohol, the viscosity of the stock solution can be easily adjusted, and the effect of suppressing combustibility can be easily obtained.

The content of the resin is not particularly limited. In the case of an example, the resin is preferably 0.1 mass% or more, more preferably 0.2 mass% or more in terms of solid content in the aerosol composition. The resin is preferably 10 mass% or less, more preferably 8 mass% or less in terms of solid content in the aerosol composition. By the content of the resin being within the above range, the aerosol composition further suppresses combustibility (flame size, burning time) even if an open flame is brought close to the foam, although it contains a combustible component.

The surfactant is not particularly limited. The surfactant is a nonionic surfactant, an anionic surfactant, a cationic surfactant, an amphoteric surfactant, a silicone surfactant, or the like, if one example is given. These surfactants are not included in the combustible component of the present embodiment. Among these, the surfactant preferably contains at least any one of an anionic surfactant or an amphoteric surfactant. Thus, although the foamable aerosol composition contains a hydrofluoroolefin, the foamability is easily improved and the effect of suppressing combustibility is more excellent.

The nonionic surfactant is cocamide DEA, polyoxyethylene alkyl ether, polyglycerol fatty acid ester, polyoxyethylene glycerol 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, polyoxyethylene sorbitol fatty acid ester, etc.

The anionic surfactant is N-acyl glutamate such as N-coconut fatty acid acyl-L-glutamic acid triethanolamine, N-coconut fatty acid acyl-L-glutamic acid potassium (cocoyl potassium glutamate), N-coconut fatty acid acyl-L-glutamic acid sodium, N-lauroyl-L-glutamic acid triethanolamine, N-lauroyl-L-potassium glutamate, N-lauroyl-L-sodium glutamate, N-myristoyl-L-potassium glutamate, N-myristoyl-L-sodium glutamate and N-stearoyl-L-sodium glutamate, N-acyl glycinate such as N-coconut fatty acid acyl glycinate potassium and N-coconut fatty acid acyl glycinate sodium; amino acid soaps such as N-acyl alanine salts, e.g., N-coconut fatty acid acyl-DL-alanine triethanolamine, fatty acid soaps, alkyl sulfates, polyoxyethylene alkyl ether sulfates, alkyl phosphates, polyoxyethylene alkyl ether phosphates, and the like.

The cationic surfactant is alkyl ammonium salt, polyoxyethylene alkylamine, etc.

The amphoteric surfactant is imidazoline such as sodium lauroyl amphoacetate, amide betaine such as sodium cocoyl amphoacetate, alkyl betaine, amide amine oxide, amide sulfobetaine, fatty acid amide propyl betaine, carboxyl betaine, etc.

The content of the surfactant is not particularly limited. The content of the surfactant in the aerosol composition is preferably 0.1 mass% or more, more preferably 0.3 mass% or more, if an example is given. The content of the surfactant in the aerosol composition is preferably 10 mass% or less, more preferably 8 mass% or less. When the content of the surfactant is within the above range, the effect by blending the surfactant can be easily obtained.

Water

Water is used as a solvent for resins, surfactants, active ingredients, and the like. By including water, the aerosol composition can reduce the combustibility of the foam.

The water content is not particularly limited. If an example is given, water is preferably 40% by mass or more, more preferably 50% by mass or more, in the aerosol composition. In addition, the water is preferably 90 mass% or less, more preferably 80 mass% or less in the aerosol composition. By the content of water being within the above range, the aerosol composition can reduce the combustibility of the foam.

Combustible component

The combustible component is not particularly limited. The combustible component is, for example, monohydric alcohol having 2 to 3 carbon atoms, oil agent, or the like. Of these, the combustible component preferably contains a monohydric alcohol having 2 to 3 carbon atoms. Accordingly, the aerosol composition is easy to dissolve the resin and the active ingredient, and the number of usable raw materials is large, and the use thereof is wide.

The monohydric alcohol is suitably blended as a solvent for dissolving the water-insoluble active ingredient.

The monohydric alcohol is not particularly limited. If one example is given, the monohydric alcohol is ethanol, isopropanol, or the like.

In the case of blending a monohydric alcohol, the content of the monohydric alcohol is not particularly limited. If an example is given, the content of the monohydric alcohol in the aerosol composition is preferably 0.1 mass% or more, more preferably 1 mass% or more. The content of the monohydric alcohol in the aerosol composition is preferably 30% by mass or less, more preferably 25% by mass or less. When the content of the monohydric alcohol is within the above range, the aerosol composition can obtain a flammability suppressing effect, and the active ingredient can be easily blended.

The oil agent is not particularly limited. Examples of the oils include ester oils such as isopropyl myristate, isopropyl palmitate, diisopropyl adipate, glyceryl tris (caprylate/caprate), diethoxyethyl succinate, methylpentanediol dipivalate, neopentyl glycol dicaprate, hydrocarbon oils such as liquid paraffin, kerosene, squalene, squalane, isoparaffin, 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, palm oil and the like, methyl polysiloxane, methylphenyl polysiloxane, methyl polycyclosiloxane and the like.

The content of the oil agent is not particularly limited. If an example is given, the content of the oil agent in the aerosol composition is preferably 0.1 mass% or more, more preferably 0.3 mass% or more. The content of the oil agent in the aerosol composition is preferably 10 mass% or less, more preferably 8 mass% or less. When the content of the oil agent is within the above range, the effect due to blending of the oil agent can be easily obtained.

Returning to the description of the entire combustible component, the content of the combustible component (the total amount of the combustible components contained in the raw liquid and the liquefied gas) in the aerosol composition is 1% by mass or more, preferably 2% by mass or more. The content of the combustible component in the aerosol composition is not more than 30% by mass, preferably not more than 25% by mass. When the content of the combustible component is less than 1% by mass, the aerosol composition is not easy to stably blend with the resin. On the other hand, when the combustible component exceeds 30 mass%, if the aerosol composition fires by bringing the open flame close to the foam formed by the discharge, the combustion continues or the flame height increases.

Any component

The stock solution may contain, in addition to the above-mentioned resin, surfactant, water and flammable component, various active ingredients, higher alcohols, water-soluble polymers, polyols, highly volatile solvents, powders and the like.

The active ingredient may be appropriately selected depending on the use, purpose, etc. of the aerosol composition. If an example is given of this kind, the effective components include natural perfume, synthetic perfume, etc., natural perfume, and other cooling agent such as camphor, menthol, etc., retinol acetate, retinol palmitate, calcium pantothenate, magnesium ascorbyl phosphate, sodium ascorbate, dl-alpha-tocopherol, tocopheryl acetate, tocopherol hydrochloride, dibenzothiamine, riboflavin, and their mixture, and other vitamins, ascorbic acid, alpha-tocopherol, dibutyl hydroxytoluene, butyl hydroxyanisole, etc., glycine, alanine, leucine, serine, tryptophan, cysteine, methionine, aspartic acid, glutamic acid, arginine, etc., collagen, hyaluronic acid, carlong acid, sodium lactate, dl-pyrrolidone carboxylate, keratin, casein, lecithin, urea, etc., humectant, parahydroxybenzoate, sodium benzoate, etc preservative such as potassium sorbate and phenoxyethanol, sterilizing disinfectant such as benzalkonium chloride, benzethonium chloride, chlorhexidine hydrochloride, parachlorometacresol, etc., royal jelly extract, paeonia lactiflora extract, luffa extract, rose extract, lemon extract, aloe extract, calamus root extract, eucalyptus extract, sage extract, tea extract, seaweed extract, placenta extract, silk extract, zinc oxide, allantoin hydroxyaluminum, tannic acid, citric acid, astringent such as lactic acid, allantoin, glycyrrhetinic acid, antiinflammatory agent such as dipotassium glycyrrhizate and azulene, lauric acid methacrylate, methyl benzoate, phenyl acetic acid methyl ester, geranyl chloride, myristic acid acetophenone, benzyl acetate, benzyl propionate, deodorant such as green tea extract, diethylaminohydroxybenzoyl hexyl benzoate, diethyl aminohydroxybenzoate, ultraviolet absorbers such as 2-ethylhexyl p-methoxycinnamate, ethylhexyl triazone, oxybenzone sulfonic acid, sodium dihydroxybenzophenone sulfonate, and dihydroxybenzophenone, ultraviolet scattering agents such as zinc oxide, titanium oxide, and octyltrimethoxysilane-coated titanium oxide, whitening agents such as arbutin and kojic acid, antiperspirants such as aluminum chlorohydrate and isopropyl methylphenol, and antiinflammatory analgesics such as methyl salicylate, indomethacin, felbinac, and tyrosol.

In the case of blending the active ingredient, the content of the active ingredient is not particularly limited. If an example is given, the content of the active ingredient in the aerosol composition is preferably 0.01 mass% or more, more preferably 0.03 mass% or more. The content of the active ingredient in the aerosol composition is preferably 20% by mass or less, more preferably 15% by mass or less. The content of the active ingredient in the above range facilitates the effect of blending the active ingredient.

The polyhydric alcohol is not particularly limited. If one example is given, the polyol is propylene glycol, 1, 3-butanediol, hexanediol, pentanediol, dipropylene glycol, glycerol, diglycerol, and the like.

In the case of blending a polyol, the content of the polyol is not particularly limited. If an example is given, the content of the polyol in the aerosol composition is preferably 0.1 mass% or more, more preferably 0.5 mass% or more. The content of the polyol in the aerosol composition is preferably 10 mass% or less, more preferably 8 mass% or less. By the content of the polyhydric alcohol being within the above range, the aerosol composition is easy to adjust foamability and drying property.

In the case of blending a high-volatility solvent, the content of the high-volatility solvent is not particularly limited. If an example is given, the content of the highly volatile solvent in the aerosol composition is preferably 0.1 mass% or more, more preferably 1 mass% or more. The content of the high-volatility solvent in the aerosol composition is preferably 10 mass% or less, more preferably 8 mass% or less. By the content of the highly volatile solvent being within the above range, the aerosol composition is easy to adjust foamability.

The method for preparing the stock solution is not particularly limited. The stock solution can be prepared by a known method. For example, the stock solution can be prepared by adding any component such as a resin, a surfactant, an active ingredient, and an alcohol to water or warm water.

The viscosity of the stock solution of the present embodiment is 7 mPas or more, more preferably 8 mPas or more at 20 ℃. By adjusting the viscosity of the stock solution to the above range, the stock solution can easily obtain the effects of enhancing the strength of the film of the obtained foam and suppressing combustibility. The viscosity of the stock solution was measured at 20℃using a type B rotary viscometer.

Liquefied gas

The liquefied gas is liquefied in the aerosol container, and if discharged to the outside, the liquefied gas is gasified to increase the volume, and the raw liquid is foamed to form foam. The liquefied gas contains a hydrofluoroolefin.

The hydrofluoroolefin is not particularly limited. In order to further suppress combustibility (flame size and burning time) even when an open flame is brought close to a foam, the hydrofluoroolefin is preferably trans-1, 3-tetrafluoroprop-1-ene (HFO-1234 ze, boiling point-19 ℃), or a hydrofluoroolefin having a boiling point of less than 5 ℃ such as trans-2, 3-tetrafluoroprop-1-ene (HFO-1234 yf, boiling point-29 ℃), more preferably trans-1, 3-tetrafluoroprop-1-ene. By containing trans-1, 3-tetrafluoroprop-1-ene as the hydrofluoroolefin, the combustion-inhibiting effect of the aerosol composition is more excellent.

The content of the liquefied gas in the aerosol composition is preferably 3% by mass or more, and more preferably 5% by mass or more. The content of the liquefied gas in the aerosol composition is preferably 30 mass% or less, more preferably 25 mass% or less. When the content of the liquefied gas is within the above range, the foam quality of the aerosol composition is excellent, and a foam having a predetermined hardness is easily formed, so that the combustibility suppressing effect is easily obtained.

The liquefied gas may contain a flammable liquefied gas within a range that does not reduce the hardness of the foam or the foam. The flammable liquefied gas is not particularly limited. The flammable liquefied gas is liquefied petroleum gas, dimethyl ether, a mixture thereof, or the like, if one example is given.

The foamable aerosol product and the method of suppressing combustibility according to the second embodiment

In addition, by using the aerosol product of the present embodiment, combustibility of the ejected material is suppressed. That is, the combustibility inhibition method according to an embodiment of the present invention is a combustibility inhibition method for inhibiting combustibility of an ejection product. The combustibility suppressing method ejects the aerosol composition to the outside to form an ejected product. The aerosol composition is composed of a stock solution and a liquefied gas, the stock solution containing a resin, a surfactant, water and a combustible component. The content of the combustible component in the foamable aerosol composition is 1 to 30% by mass. According to such a method of suppressing combustibility, the foam can suppress the diffusion of the gasified gas of the combustible component from the inside of the foam and can suppress combustibility (combustion time, height of flame column) even when the foam catches fire in the vicinity of open fire, as compared with the case of using the conventional aerosol composition other than the aerosol composition of the above embodiment.

In the above, an embodiment of the present invention has been described. The present invention is not particularly limited to the above-described embodiments. The above-described embodiments mainly explain the invention having the following configuration.

(1) A foamable aerosol composition comprising a stock solution and a liquefied gas, wherein the stock solution contains a flame retardant component and water, and the total amount of the combustible components contained in the stock solution and the liquefied gas is 1 to 30% by mass in the foamable aerosol composition.

With such a configuration, the foamable aerosol composition can suppress combustibility when the foam formed by ejecting open flame is ignited.

(2) The foamable aerosol composition according to (1), wherein the flame retardant component is a foam curing component, the total content of the flammable components contained in the raw liquid and the liquefied gas is 5 to 30% by mass in the foamable aerosol composition, and the hardness of the foam formed when the foam is discharged to the outside is 100 to 2000mN (20 ℃).

According to such a configuration, the hardness of the foam formed by the ejection is adjusted so as to be within a specific range. Accordingly, even when the foam catches fire in the vicinity of an open flame, the diffusion of the gasification gas of the combustible component from the inside of the foam can be suppressed, and combustibility (burning time, height of flame column) can be suppressed.

(3) The foamable aerosol composition according to (2), wherein the foam curing component is at least one selected from the group consisting of fatty acid soaps, amino acid soaps, higher alcohols and water-soluble polymers.

With such a configuration, the foamable aerosol composition can easily adjust the hardness of the foam formed by ejection, and can easily obtain the effect of suppressing combustibility.

(4) The foamable aerosol composition according to (2) or (3), wherein the liquefied gas contains a flammable liquefied gas, and the content of the flammable liquefied gas in the foamable aerosol composition is 3 to 30% by mass.

With such a configuration, the foamable aerosol composition is excellent in foamability, and foam of a specific hardness is easily formed, and thus a combustion suppressing effect is easily obtained.

(5) The foamable aerosol composition according to any one of (2) to (4), wherein the stock solution contains a monohydric alcohol having 2 to 3 carbon atoms, and the content of the alcohol in the foamable aerosol composition is 0.1 to 20% by mass.

With such a configuration, the foamable aerosol composition can easily obtain an effect of suppressing combustibility.

(6) A foamable aerosol product comprising the foamable aerosol composition of any of (2) to (5).

(7) A method for suppressing combustibility of an ejection product, wherein the ejection product is formed by ejecting an aerosol composition to the outside, wherein the aerosol composition comprises a liquid stock and a liquefied gas, the liquid stock contains a foam-curing component and water, the total content of combustible components contained in the liquid stock and the liquefied gas is 5 to 30% by mass in the foamable aerosol composition, and the hardness of foam formed when the aerosol composition is ejected to the outside is adjusted to 100 to 2000mN (20 ℃).

(8) The foamable aerosol composition according to (1), wherein the stock solution further comprises a surfactant, the flame retardant component is a resin, and the liquefied gas comprises a hydrofluoroolefin.

(9) The foamable aerosol composition according to (8), wherein the content of the resin is 0.1 to 10% by mass in the foamable aerosol composition in terms of solid matter conversion.

According to such a configuration, the foamable aerosol composition contains a specific amount of the resin, and thus, even if the open flame is brought close to the foam, combustibility (flame size, combustion time) is further suppressed in spite of the inclusion of the combustible component.

(10) The foamable aerosol composition according to (8) or (9), wherein the combustible component contains a monohydric alcohol having 2 to 3 carbon atoms.

According to such a constitution, the foamable aerosol composition easily dissolves the resin and the active ingredient, and the number of usable raw materials increases, which leads to a wide range of applications.

(11) The foamable aerosol composition according to any one of (8) to (10), wherein the resin comprises at least any one of a cationic resin and an anionic resin.

According to such a constitution, the foamable aerosol composition is more excellent in the combustion suppressing effect.

(12) The foamable aerosol composition according to any one of (8) to (11), wherein the surfactant comprises at least any one of an anionic surfactant or an amphoteric surfactant.

According to such a constitution, although the foamable aerosol composition contains a hydrofluoroolefin, the foamability is easily improved and the effect of suppressing combustibility is more excellent.

(13) The foamable aerosol composition according to any one of (8) to (12), wherein the hydrofluoroolefin is trans-1, 3-tetrafluoroprop-1-ene.

Examples

Hereinafter, the present invention will be described more specifically with reference to examples. The present invention is not limited to these examples.

Examples of aerosol compositions relating to the first embodiment

Example A1

Stock solution A1 was prepared according to the formulation shown in table 1 below, and 90g (90 mass%) was filled in an aluminum container body. The valve was fixed to the opening of the container body, 10g (10 mass%) of liquefied petroleum gas was filled from the valve, and the raw liquid A1 and the liquefied petroleum gas were mixed in the aerosol container to prepare a foamable aerosol composition.

TABLE 1

	Stock solution A1	Stock solution A2	Stock solution A3	Stock solution A4	Stock solution A5	Stock solution A6	Stock solution A7
								Cocamide CDE (×1)	1.0	1.0	1.0	1.0	1.0	1.0	1.0
Cetyl alcohol	3.0	－	3.0	3.0	－	3.0	－
								Ethanol	－	A first part	5.0	10.0	10.0	25.0	25.0
Purified water	95.0	99.0	91.0	86.0	89.0	71.0	74.0
								Totalizing	100.0	100.0	100.0	100.0	100.0	100.0	100.0

*1: amizol CDE (trade name) manufactured by Chuanmin chemical Co., ltd

Examples A2 and comparative examples A1 to A4

Stock solutions A2, A4 to A7 were prepared by changing the formulation of the stock solution to the formulation shown in table 1. Using the obtained stock solutions A2 and A4 to A7, examples A2 and comparative examples A1 to A4 were prepared in the same manner as in example A1.

The aerosol compositions obtained in examples A1 to A2 and comparative examples A1 to A4 were evaluated for the hardness of the foam and the combustibility (flame height and burning time) of the foam by the following evaluation methods. The results are shown in Table 2.

Hardness of foam

The aerosol product was immersed in a constant temperature water bath at 20℃for 1 hour, the aerosol composition was adjusted to 20℃and discharged into a bottomed cylindrical cup (inner diameter: 32mm, depth: 27 mm), the inside of the cup was filled with foam, and the opening of the cup was scraped with a plate to planarize the surface of the foam. The foam was compressed by applying a load from above by a disk-shaped plunger having a diameter of 30mm, and the hardness (breaking point) was measured. The hardness and elasticity were measured using EZ-test (manufactured by Shimadzu corporation).

Combustion test of foam

The aerosol product was immersed in a constant temperature water bath at 20 ℃ for 1 hour, the aerosol composition was adjusted to 20 ℃, and 5g was sprayed onto a dish to form a foam. The height and burning time of the flame when the open flame was brought close to the foam and the foam was ignited were measured and evaluated according to the following evaluation criteria.

Evaluation criterion

The foam did not catch fire.

O: the foam catches fire but disappears within 2 seconds.

Delta: the foam catches fire and the flame height is less than 4cm.

X: the foam catches fire, the height of the flame is more than 4cm, and the burning time is more than 7 seconds.

TABLE 2

As shown in table 2, if the aerosol composition of example A1 was compared with comparative example A1, the hardness of the foam exceeded 100mN by the placement of the higher alcohol and was not ignited, whereas the hardness of the foam of the aerosol composition of comparative example A1 was lower than 100mN and was ignited. If example A2 is compared with comparative example A2, the aerosol composition can suppress ignition by placing higher alcohol as in the comparison of example A1 and comparative example A1. In comparative examples A3 and A4, the content of the combustible component exceeded 30 mass%, and the hardness of the foam was less than 100mN even when the aerosol composition was put into higher alcohol, and the combustibility could not be suppressed.

Example A3

A foamable aerosol composition was produced in the same manner as in example A1, except that 85g (85 mass%) of the stock solution A4 shown in table 1 and 15g (15 mass%) of liquefied petroleum gas were filled.

Comparative example A5

A foamable aerosol composition was prepared in the same manner as in example A3, except that the stock solution A5 shown in table 1 was used.

Example A4

A foamable aerosol composition was produced in the same manner as in example A1, except that 80g (80 mass%) of the stock solution A1 shown in table 1 and 20g (20 mass%) of the liquefied petroleum gas were filled.

Comparative example A6

A foamable aerosol composition was prepared in the same manner as in example A4, except that the stock solution A2 shown in table 1 was used.

Example A5

A foamable aerosol composition was prepared in the same manner as in example A4, except that the stock solution A3 shown in table 1 was used.

The aerosol compositions obtained in examples A3 to A5 and comparative examples A5 to A6 were evaluated for the hardness of the foam and the combustibility (flame height and burning time) of the foam by the same evaluation methods as described above. The results are shown in Table 3.

TABLE 3 Table 3

As shown in table 3, when the aerosol composition of example A3 was compared with comparative example A5, the hardness of the foam exceeded 100mN by the placement of the higher alcohol, and the burning time was within 2 seconds although it was on fire, whereas the hardness of the foam of the aerosol composition of comparative example A5 was below 100mN, the flame height was 10cm, and the burning time was 26 seconds. When the aerosol composition of example A4 was compared with comparative example A6, the hardness of the foam exceeded 100mN by the introduction of higher alcohol, whereas the hardness of the foam of the aerosol composition of comparative example A6 was lower than 100mN, the flame height was 15cm, and the burning time was 10 seconds. The hardness of the foam of the aerosol composition of example A5 in which ethanol was added to the aerosol composition of example A4 exceeded 100mN, and the burning time was 2 seconds or less although it was on fire.

Example A6

A foamable aerosol composition was produced in the same manner as in example A1, except that 95g (95 mass%) of the stock solution A8 shown in table 4 and 5g (5 mass%) of the liquefied petroleum gas were filled.

Comparative example A7

A foamable aerosol composition was prepared in the same manner as in example A6, except that the stock solution A9 shown in table 5 was used.

TABLE 4 Table 4

	Stock solution A8
		Lauroyl sodium glutamate (x 2)	2.0
Polysorbate 60 (.3)	1.5
		Steareth－4(*4)	1.5
Steareth－2(*5)	1.5
		Ethanol	15.0
Purified water	78.5
		Totalizing	100.0

*2: aminosurfact ALMS-P1 (trade name), manufactured by Asahi Kasei Chemicals Co., ltd

*3: NIKKKOL TS-10V (trade name), manufactured by Nikkol Kagaku Co., ltd

*4: NIKKKOL BS-4 (trade name), manufactured by Nikkol Kagaku Co., ltd

*5: NIKKKOL BS-2 (trade name), manufactured by Nikkol Kagaku Co., ltd

TABLE 5

	Stock solution A9
		Cocamide CDE (×1)	1.0
Ethanol	15.0
		Purified water	84.0
Totalizing	100.0

Example A7

A foamable aerosol composition was produced in the same manner as in example A1, except that 80g (80 mass%) of the stock solution a10 shown in table 6 and 20g (20 mass%) of the liquefied petroleum gas were filled.

Comparative example A8

A foamable aerosol composition was prepared in the same manner as in example A7, except that the stock solution a11 shown in table 6 was used.

TABLE 6

	Stock solution A10	Stock solution A11
			Myristic acid	6.0	－
Triethanolamine salt	2.0	－
			PEG-60 hydrogenated castor oil (6)	1.0	1.0
PEG-20 sorbitan cocoate (7X)	1.0	1.0
			Simethicone (x 8)	2.0	2.0
Cetyl alcohol	1.0	－
			P-hydroxybenzoic acid methyl ester	0.1	0.1
Gelatin	2.0	－
			Purified water	84.9	95.9
Totalizing	100.0	100.0

*6: NIKKKOL HCO-60 (trade name), manufactured by Nikkol Corp

*7: NIKKKOL TL-10 (trade name), manufactured by Nikkol chemical Co., ltd

*8: SH200 500cs (trade name), manufactured by Dow Chemical Japanese Co., ltd

The aerosol compositions obtained in examples A6 to A7 and comparative examples A7 to A8 were evaluated for the hardness of the foam and the combustibility (flame height and burning time) of the foam by the above-described evaluation methods. The results are shown in Table 7.

TABLE 7

As shown in Table 7, when the aerosol composition of example A6 was compared with comparative example A7, the hardness of the foam was more than 100mN, the flame height was 3cm, and the burning time was 10 seconds by placing an amino acid soap in the aerosol composition of example A6, whereas the hardness of the foam of the aerosol composition of comparative example A7 was less than 100mN, the flame height was 3cm, and the burning time was 18 seconds. In contrast to the comparative example A8, in which the hardness of the foam exceeds 100mN, the flame height is 13cm, and the burning time is 2 seconds or less when the aerosol composition of example A7 is compared with comparative example A8, the hardness of the foam of the aerosol composition of comparative example A7 is less than 100mN, the flame height is 20cm, and the burning time is 12 seconds.

Example A8

A foamable aerosol composition was produced in the same manner as in example A1, except that 80g (80 mass%) of the stock solution a12 shown in table 8 and 20g (20 mass%) of the liquefied petroleum gas were filled.

TABLE 8

*9: adekanol GT-700 (trade name), manufactured by ADEKA Co., ltd

For the aerosol composition obtained in example A8, the hardness of the foam, the combustibility (flame height and burning time) of the foam were evaluated by the above-described evaluation method. The results are shown in Table 9.

TABLE 9

As shown in Table 9, when the aerosol composition of example A8 was compared with comparative example A6 in which the amount of the combustible component was the same but the foam curing component was not added, the hardness of the foam was more than 100mN, the flame height was 18cm, the burning time was 2 seconds or less, and the hardness of the foam of the aerosol composition of comparative example A6 was less than 100mN, the flame height was 15cm, and the burning time was 10 seconds.

Examples of aerosol compositions relating to the second embodiment

Example B1

Stock solution B1 was prepared according to the formulation shown in table 10 below, and 80g (80 mass%) was filled in an aluminum container body. A valve was fixed to an opening of a container body, 20g (20 mass%) of trans-1, 3-tetrafluoroprop-1-ene was filled from the valve, and a raw liquid B1 and trans-1, 3-tetrafluoroprop-1-ene were mixed in an aerosol container to prepare a foamable aerosol composition.

Table 10

*10: H.C. Polymer-1S (M) (trade name), solid content 20% + solvent Water, manufactured by Osaka organic chemical Co., ltd

*11: plascize L-53P (trade name), 50% solids with solvent ethanol, manufactured by Kagaku Co., ltd

*12: plascize L-6330 (trade name), 30% solids with solvent ethanol, manufactured by Kagaku Co., ltd

*13: plascize L-222 (trade name), 90% solids with solvent ethanol, manufactured by Kagaku Kogyo Co., ltd

*14: amisoft CK-22 (trade name), manufactured by Ajinomoto Healthy Supply Co., ltd

*15: SOFTAZOLINE LHL-SF (trade name), manufactured by Chuanminshen Fine chemical Co., ltd

*16: NIKKKOL BL-21 (trade name), manufactured by Nikkol Kagaku Co., ltd

Examples B2 to B7 and comparative examples B1 to B3

Stock solutions B2 to B10 were prepared by changing the formulation of the stock solution to the formulation shown in table 1. Using the respective stock solutions B2 to B10 thus obtained, aerosol compositions of examples B2 to B7 and comparative examples B1 to B3 were prepared in the same manner as in example B1.

Example B8

Stock solution B1 was prepared, and 85g (85 mass%) was filled in an aluminum container body. A valve was fixed to an opening of a container body, 15g (15 mass%) of trans-1, 3-tetrafluoroprop-1-ene was filled from the valve, and a raw liquid B1 was mixed with trans-1, 3-tetrafluoroprop-1-ene in an aerosol container to prepare a foamable aerosol composition.

The aerosol compositions obtained in examples B1 to B8 and comparative examples B1 to B3 were evaluated for the viscosity of the raw liquid, foamability, and combustibility of the foam (flame height and burning time) by the following evaluation methods. The results are shown in Table 11.

Viscosity of stock solution

The stock solution was adjusted to 20℃and measured by a type B viscometer (rotation speed: 60 rpm).

Foamability of foam

The aerosol product was immersed in a constant temperature water bath at 20℃for 1 hour, the aerosol composition was adjusted to 20℃and 5g was discharged into a dish to form a foam, and the foam was evaluated according to the following evaluation criteria.

Evaluation criterion

O: the foam was sufficiently foamed, and even after 10 minutes had passed, foam was formed.

Delta: the foam was sufficiently foamed, but defoamed at about 5 minutes.

X: foam was defoamed from immediately after ejection, and foam was defoamed for about 1 minute.

Combustion test of foam

The aerosol product was immersed in a constant temperature water bath at 20 ℃ for 1 hour, the aerosol composition was adjusted to 20 ℃, and 5g was sprayed into a dish to form a foam. The height and burning time of the flame when the open flame was brought close to the foam and the foam was ignited were measured and evaluated according to the following evaluation criteria.

Evaluation criterion

The foam did not catch fire.

O: the foam, although it catches fire, disappeared within 2 seconds.

Delta: the foam catches fire, the height of flame is less than 4cm, and the burning time is 3-6 seconds.

X: the foam catches fire, the height of flame is more than 4cm, and the burning time is more than 7 seconds.

TABLE 11

As shown in table 11, if example B1 containing a cationic resin, example B4 containing an anionic resin, and example B7 containing a nonionic resin, each of which contained 16 mass% of combustible components, were compared with comparative example B1 containing no resin, the flame heights of example B1 and example B4 were 2cm, and flame disappeared within 2 seconds, the flame height of example B7 was 2cm, and flame disappeared after 3 seconds, whereas the flame height of comparative example B1 was 10cm, and flame disappeared after 11 seconds. In example B8 in which the content of the flammable component was large while the content of the hydrofluoroolefin was small in the stock solution B1 as compared with example B1, the flame was 2cm in height and disappeared within 2 seconds as in example B1. If the example B5 containing the anionic resin and the example B6 containing the anionic resin with the combustible component content of 12 mass% were compared with the comparative example B2 containing no resin, the flame height of the example B5 was 2cm and the flame disappeared within 2 seconds, the flame height of the example B6 was 5cm and the flame disappeared within 2 seconds, whereas the flame height of the comparative example B2 was 5cm and the flame disappeared after 7 seconds. If example B2 containing a cationic resin and example B3 containing an anionic resin, in which the content of the combustible component was 8 mass%, were compared with comparative example B3 containing no resin and using a nonionic surfactant, flame was not generated in example B2, the flame height of example B3 was 2cm, and flame disappeared within 2 seconds, whereas the flame height of comparative example B3 was 10cm, and flame disappeared after 10 seconds.

Claims

1. A foamable aerosol composition comprising a liquid stock and a liquefied gas, wherein the liquid stock contains a flame retardant component and water, and the total amount of the combustible components contained in the liquid stock and the liquefied gas is 1 to 30% by mass of the foamable aerosol composition.

2. The foamable aerosol composition according to claim 1, wherein the flame retardant component is a foam curing component, the total content of the combustible component contained in the raw liquid and the liquefied gas is 5 to 30% by mass in the foamable aerosol composition,

the hardness of the foam formed when the foam is discharged to the outside is 100 to 2000mN, and the hardness is 20 ℃.

3. The foamable aerosol composition according to claim 2, wherein the foam curing ingredient is at least one selected from the group consisting of fatty acid soaps, amino acid soaps, higher alcohols, and water-soluble polymers.

4. The foamable aerosol composition according to claim 2 or 3, wherein the liquefied gas comprises a flammable liquefied gas,

the content of the flammable liquefied gas is 3 to 30 mass% in the foamable aerosol composition.

5. The foamable aerosol composition according to any one of claims 2 to 4, wherein the stock solution contains a monohydric alcohol having 2 to 3 carbon atoms,

The content of the alcohol in the foamable aerosol composition is 0.1 to 20% by mass.

6. A foamable aerosol article comprising the foamable aerosol composition of any of claims 2 to 5.

7. A method for suppressing combustibility of an ejection product,

the aerosol composition is discharged to the outside to form a discharge,

the aerosol composition is composed of a stock solution and a liquefied gas, the stock solution comprises a foam curing component and water,

the total content of the combustible components contained in the stock solution and the liquefied gas is 5 to 30 mass% in the foamable aerosol composition,

the hardness of the foam formed when the foam is discharged to the outside is adjusted to 100 to 2000mN, and the hardness is 20 ℃.

8. The foamable aerosol composition according to claim 1, wherein the stock solution further comprises a surfactant, the flame retardant component is a resin,

the liquefied gas comprises a hydrofluoroolefin.

9. The foamable aerosol composition according to claim 8, wherein the content of the resin is 0.1 to 10% by mass in the foamable aerosol composition in terms of a solid content conversion.

10. The foamable aerosol composition according to claim 8 or 9, wherein the combustible component comprises a monohydric alcohol having 2 to 3 carbon atoms.

11. The foamable aerosol composition according to any of claims 8 to 10, wherein the resin comprises at least any of a cationic resin or an anionic resin.

12. The foamable aerosol composition according to any of claims 8 to 11, wherein the surfactant comprises at least any of an anionic surfactant or an amphoteric surfactant.

13. The foamable aerosol composition according to any of claims 8 to 12 wherein the hydrofluoroolefin is trans-1, 3-tetrafluoroprop-1-ene.