JP2021017440A - Post-foamable composition - Google Patents

Abstract

To provide a post-foamable composition that can be discharged like a gel, gradually foams after discharged, and gives a moderate cooling feel.SOLUTION: A post-foamable composition contains water, a surfactant, an oil solution, and a hydrofluoroolefin with a boiling point of 5-25°C. The hydrofluoroolefin content is 3-30 mass%. The oil solution contains at least one of ester oil, hydrocarbon, alkyl glucoside, and oil and fat. The oil solution includes solid oil.SELECTED DRAWING: None

Description

The present invention relates to post-foaming compositions. More specifically, the present invention relates to a post-foaming composition that can be discharged in the form of a gel, gradually foams after discharge, and an appropriate cooling feeling can be obtained.

Conventionally, a post-foaming composition has been known which foams after being discharged in the form of a gel to form a foam. Patent Document 1 discloses a gel-like post-foaming composition in which an oil-in-water emulsion contains a low-boiling organic liquid.

Japanese Unexamined Patent Publication No. 1-210065

In the invention described in Patent Document 1, isopentane or the like can be used as the organic liquid. However, isopentane and the like are flammable. Therefore, in order to suppress the flammability of the post-foaming composition, it is conceivable to replace the organic liquid with a hydrofluoroolefin having low flammability. However, hydrofluoroolefins have a low boiling point. Therefore, the discharged product tends to foam immediately after being discharged, and it is difficult to discharge the discharged product in the form of a gel. In addition, such a post-foaming composition that easily foams does not easily maintain a cooling feeling.

The present invention has been made in view of such conventional problems, and provides a post-foaming composition that can be discharged in the form of a gel, gradually foams after discharge, and an appropriate cooling feeling can be obtained. The purpose is.

The present invention that solves the above problems mainly includes the following configurations.

(1) A post-sparkling composition containing water, a surfactant, an oil agent, and a hydrofluoroolefin having a boiling point of 5 to 25 ° C.

According to such a configuration, the post-foaming composition is emulsified by an oil agent and a surfactant even though it contains a hydrofluoroolefin having a low boiling point, and vaporization after discharge is suppressed. As a result, the post-foaming composition can be discharged in the form of a gel, and gradually foams after the discharge, and an appropriate cooling feeling can be obtained.

(2) The post-foaming composition according to (1), wherein the content of the hydrofluoroolefin is 3 to 30% by mass.

According to such a configuration, the post-foaming composition can be discharged in a more stable gel form, and gradually foams after the discharge, and an appropriate cooling feeling can be obtained.

(3) The post-foaming composition according to (1) or (2), wherein the oil agent contains at least one of an ester oil, a hydrocarbon, an alkyl glucoside and an oil and fat.

According to such a configuration, the hydrofluoroolefin of the post-foaming composition is more stably emulsified by a specific oil agent and surfactant. As a result, the post-foaming composition retains the hydrofluoroolefin in the discharged product for a long time, suppresses vaporization, can be discharged in a more stable gel form, gradually foams after the discharge, and gives an appropriate cooling feeling. can get.

(4) The post-foaming composition according to any one of (1) to (3), wherein the oil agent contains a solid oil.

According to such a configuration, the post-foaming composition can increase the viscosity of the gel and further suppress the vaporization of the hydrofluoroolefin.

According to the present invention, it is possible to provide a post-foaming composition that can be discharged in the form of a gel, gradually foams after discharge, and an appropriate cooling feeling can be obtained.

<Post-foaming composition>
The post-foaming composition of one embodiment of the present invention contains water, a surfactant, an oil agent, and a hydrofluoroolefin having a boiling point of 5 to 25 ° C. Each will be described below.

(Aqueous undiluted solution)
The aqueous stock solution contains water, a surfactant and an oil agent.

-Water Water is used as a solvent. Due to the inclusion of water, the post-foaming composition can be gradually foamed after discharge, or can be foamed by applying shear to the gel-like discharge with a finger or the like to form a foam. Easy to spread on the application area such as hair, arms, hands and legs.

Water is not particularly limited. As an example, the water is purified water, ion-exchanged water, physiological saline, deep sea water and the like.

The water content is not particularly limited. As an example, the amount of water in the post-foaming composition is preferably 30% by mass or more, more preferably 40% by mass or more. Further, the amount of water in the post-foaming composition is preferably 90% by mass or less, more preferably 80% by mass or less. When the water content is within the above range, the post-foaming composition exhibits excellent foamability, and it is easy to blend hydrofluoroolefin, which will be described later, in an appropriate amount.

-Surfactant A surfactant is added to emulsify a hydrofluoroolefin in an aqueous stock solution to increase the viscosity of the post-foaming composition and to form a gel-like uniform phase. Further, the surfactant is blended for the purpose of vaporizing the aqueous stock solution and the emulsified hydrofluoroolefin when discharged to the outside, and foaming the aqueous stock solution to form a foam.

The surfactant is not particularly limited. For example, surfactants are anionic surfactants such as fatty acid soaps, alkyl sulfates, polyoxyethylene alkyl ether sulfates, alkyl phosphates, polyoxyethylene alkyl ether phosphates; 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 , Nonionic surfactants such as polyoxyethylene sorbit fatty acid ester: (acrylic acid / steareth itaconic acid) copolymer, (acetylic acid / ceteth itaconic acid) copolymer, acrylic acid / aminoacrylate / C10-30 alkyl PEG-20 itacon Associative thickeners such as acid) copolymers; cationic surfactants such as alkylammonium salts and polyoxyethylene alkylamines; amphoteric surfactants such as alkylbetaine and fatty acid amide propylbetaine; silicone surfactants; N −Acylglutamate, N-acylglutamic acid, N-acylglycine salt, N-acylalanine salt and other amino acid-based surfactants. Surfactants may be used in combination.

Among these, surfactants are fatty acid soaps and polyoxys because they easily emulsify the aqueous stock solution and the hydrofluoroolefin uniformly to increase the viscosity, and the obtained post-foaming composition is easily discharged in the form of a gel. It is preferably an ethylene alkyl ether, more preferably a fatty acid soap. The fatty acid soap is preferably a saponification of a fatty acid containing lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid and the like and an alkali, and an organic substance such as myristic acid, palmitic acid and trietanotelamine and diisopropanolamine. More preferably, it is a saponified product of an inorganic alkali such as amine, sodium hydroxide, or potassium hydroxide. The polyoxyethylene alkyl ether has excellent foamability of the post-foaming composition and easily forms fine bubbles, and contains solid oil described later to suppress foaming immediately after discharge and is easy to discharge into a gel. It is preferable to use a gel having an HLB value of 10 or more from the viewpoint of preventing the precipitation of solid oil.

The content of the surfactant is not particularly limited. As an example, the content of the surfactant is preferably 3% by mass or more, and more preferably 5% by mass or more in the post-foaming composition. The content of the surfactant in the post-foaming composition is preferably 30% by mass or less, more preferably 25% by mass or less. When the content of the surfactant is within the above range, the post-foaming composition is easily foamed when mixed with a finger or the like, and is less sticky and has a good usability.

-Oil agent The oil agent is blended to form a uniform phase by emulsifying the aqueous stock solution and the hydrofluoroolefin more stably. In addition, the oil agent is added to suppress the vaporization of the hydrofluoroolefin. By blending the oil agent, the vaporization of the hydrofluoroolefin in the discharged product is suppressed, and the post-foaming composition is discharged in the form of a gel and then stimulated by being mixed with a finger or the like. , Hydrofluoroolefins evaporate to foam, forming creamy, fine-textured foams.

The oil agent is not particularly limited. For example, oil agents include ester oils, hydrocarbon oils, fats and oils, silicone oils, liquid higher fatty acids, liquid higher alcohols, solid hydrocarbons, solid higher fatty acids, solid higher alcohols, alkyl glucosides and the like. .. These may be used together.

In order to suppress the vaporization of hydrofluoroolefins and adjust the viscosity of the gel, liquids such as ester oils, hydrocarbon oils, fats and oils, silicone oils, liquid higher fatty acids, and liquid higher alcohols are liquid at 25 ° C. Oil may be blended.

The ester oil is not particularly limited. As an example, the ester oils are methylpentanediol dineopenate, diethylpentanediol dineopenate, diethyl sebacate, diisopropyl adipate, diethylhexyl naphthalin dicarboxylate, dibutyloctyl sebacate, neopentyl di-2-ethylhexanoate. Glycol, neopentyl glycol dicaprate, propylene glycol dilaurate, ethylene glycol distearate, diethylene glycol dilaurate, diethylene glycol distearate, diethylene glycol diisostearate, diethylene glycol dioleate, triethylene glycol dilaurate, triethylene distearate, triethylene diisostearate Glycol, triethylene glycol dioleate, propylene glycol monostearate, propylene glycol monooleate, ethylene glycol monostearate, glyceryl tri2-ethylhexanoate, glycerin tri (capryl capric acid), isononyl isononanoate, isononanoic acid Isotridecyl, diethoxyethyl succinate, diisostearyl malate, isopropyl myristate, isopropyl palmitate, ethyl linoleate, cetyl isooctanoate, octyl hydroxystearate, ethylhexyl hydrosixtearate and the like. Among these, ester oil is an ester of a linear fatty acid such as isopropyl myristate, isopropyl palmitate, ethyl linoleate and a lower alcohol because it is easy to emulsify an aqueous stock solution and a hydrofluoroolefin to form a homogeneous phase. More preferably, it is a polybasic acid ester such as methylpentanediol dineopenate, diethylpentanediol dineopenate, diethyl sebacate, diisopropyl adipate, diethylhexyl naphthaline dicarboxylic acid, and dibutyloctyl sebacate.

The hydrocarbon oil is not particularly limited. As an example, the hydrocarbon oil is liquid paraffin, kerosene, squalene, squalene, isoparaffin and the like. Among these, the hydrocarbon oil is preferably liquid paraffin because it is easy to emulsify the aqueous stock solution and the hydrofluoroolefin to form a uniform phase.

Oils and fats are not particularly limited. For example, fats and oils include avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, sesame oil, castor oil, flaxseed oil, safflower oil, jojoba oil, malt oil, palm. Oil, palm oil, etc.

The silicone oil is not particularly limited. As an example, the silicone oil is methylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, methylpolycyclosiloxane and the like.

The liquid higher fatty acid is not particularly limited. As an example, the liquid higher fatty acid is oleic acid, isostearic acid, linoleic acid, linoleic acid and the like.

The liquid higher alcohol is not particularly limited. As an example, the liquid higher alcohol is oleyl alcohol, isostearyl alcohol and the like.

In order to increase the viscosity of the gel and further suppress the vaporization of hydrofluoroolefins, solid oils such as solid hydrocarbons, solid higher fatty acids, solid higher alcohols, and alkyl glucosides, which are solid at 25 ° C., are blended. It is preferable to be done. When solid oil is used, it is preferable that the solid oil is dissolved in liquid oil to make it liquid before use.

The solid hydrocarbon is not particularly limited. For example, solid hydrocarbons are paraffin, beeswax, lanolin, candelilla wax, carnauba wax and the like. Among these, the solid hydrocarbon is preferably paraffin because it is easy to prepare with liquid oil and easy to handle.

The solid higher fatty acid is not particularly limited. For example, higher fatty acids are lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid and the like.

The solid higher alcohol is not particularly limited. For example, higher alcohols include linear alcohols such as lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, and myristyl alcohol, and branched alcohols such as lanolin alcohol, hexyldodecanol, cetostearyl alcohol, and octyldodecanol. is there.

The alkyl glucoside is not particularly limited. For example, alkyl glucosides include cetearyl glucoside, decyl glucoside, lauryl glucoside, myristyl glucoside, alkyl (C8 to C16) glucoside, alkyl (C12-20) glucoside, araquil glucoside, coconut oil glucoside, POE methyl glucoside, POE dioleate methyl glucoside and the like. Alkyl glucosides may be used in combination. Among these, alkyl glucosides are cetearyl glucosides, decyl glucosides, lauryl glucosides, myristyl glucosides, alkyl (C8 to C16) glucosides, and alkyls because they can easily form a homogeneous phase by emulsifying an aqueous stock solution and a hydrofluoroolefin. (C12-20) Glucoside, araquil glucoside, coconut oil glucoside are preferable, and coconut oil glucoside is more preferable.

The oil agent preferably contains at least one of ester oil, hydrocarbons (hydrocarbon oils, solid hydrocarbons), alkyl glucosides and fats and oils from the viewpoint of easily obtaining a uniform phase with the aqueous stock solution and the hydrofluoroolefin. It is more preferable to contain hydrocarbon oil and solid hydrocarbon.

The content of the oil agent is not particularly limited. As an example, the content of the oil agent is preferably 0.1% by mass or more, and more preferably 0.5% by mass or more in the post-foaming composition. The content of the oil agent is preferably 10% by mass or less, more preferably 8% by mass or less in the post-foaming composition. When the content of the oil agent is within the above range, the oil agent can be discharged in the form of a gel by emulsifying the aqueous stock solution and the hydrofluoroolefin so as to form a uniform phase, and an appropriate cooling feeling can be obtained. can get.

-Hydrofluoroolefin Hydrofluoroolefin becomes fine emulsified particles in the foaming composition after being filled in an airtight container, emulsifies with an aqueous stock solution, thickens, becomes a gel, and is discharged to the outside. It is used as a foaming agent that forms and foams an aqueous stock solution.

The hydrofluoroolefin may have a boiling point of 5 to 25 ° C., and is preferably trans-1-chloro-3,3,3-trifluoropropene (HFO-1233zd (E), boiling point 19 ° C.). .. By gradually foaming after discharge, the obtained foam is efficiently cooled by the heat of vaporization of the hydrofluoroolefin and tends to be cooled.

The content of the hydrofluoroolefin having a boiling point of 5 to 25 ° C. is preferably 3% by mass or more, and more preferably 5% by mass or more in the post-foaming composition. The content of the hydrofluoroolefin having a boiling point of 5 to 25 ° C. is preferably 30% by mass or less, more preferably 25% by mass or less in the post-foaming composition. When the content of the hydrofluoroolefin having a boiling point of 5 to 25 ° C. is within the above range, the post-foamable composition is likely to be discharged into a more stable gel form, and gradually foams after discharge, resulting in an appropriate cooling feeling. Is easy to obtain.

In the post-foaming composition of the present embodiment, other low boiling point solvents may be used in combination as the foaming agent in addition to the hydrofluoroolefin having a boiling point of 5 to 25 ° C. Examples of such a low boiling point solvent include trans-1,3,3,3-tetrafluoropropa-1-ene (HFO-1234ze, boiling point -19 ° C.) and trans-2,3,3,3-tetra. Hydrofluoroolefins having a boiling point of less than 5 ° C, such as fluoropropa-1-ene (HFO-1234yf, boiling point -29 ° C), cis-1-chloro-3,3,3-trifluoropropene (HFO-1233zd (Z)) , A hydrofluoroolefin having a boiling point of 25 ° C. or higher, propane, normal butane, isopentane, isopentane, and a mixture thereof, an aliphatic hydrocarbon having 3 to 5 carbon atoms, a dimethyl ether, and a mixture thereof. Liquefied gas, etc.

-Optional component The post-foaming composition may contain an optional component such as an active ingredient, an alcohol, a monosaccharide, a water-soluble polymer, and a powder, as appropriate, in addition to the above water, surfactant, and oil.

The active ingredient can be appropriately selected according to the intended use and purpose of the product. For example, the active ingredient is various fragrances such as natural fragrances and synthetic fragrances; dialkylaminoalkyl (meth) acrylate- (meth) acrylic acid alkyl ester copolymer, acrylic acid alkylamide-acrylic acid hydroxyalkyl-methacrylic acid. Amphoteric resins such as alkylaminoalkyl copolymers and, for example, alkyl acrylate copolymer emulsions, alkyl acrylate-styrene copolymer emulsions, vinylpyrrolidone-styrene copolymer emulsions, acrylic acid-hydroxyester acrylate copolymers. Styling agents such as emulsion resins such as coalesced emulsions; refreshing agents such as l-menthol, camphor, peppermint oil; retinol, retinol acetate, retinol palmitate, calcium pantothenate, magnesium ascorbate, sodium ascorbate, dl- Amino acids such as α-tocopherol, tocopherol acetate, tocopherol, tocopherol nicotinate, dibenzoylthiamine, riboflavin and mixtures thereof; antioxidants such as ascorbic acid, α-tocopherol, dibutylhydroxytoluene, butylhydroxyanisole; glycine, alanine , Amino acids such as leucine, serine, tryptophan, cysteine, methionine, aspartic acid, glutamate, arginine; moisturizers such as collagen, hyaluronic acid, caronic acid, sodium lactate, dl-pyrrolidone carboxylate, keratin, casein, lecithin, urea Bactericidal and disinfectants such as paraoxybenzoic acid ester, sodium benzoate, potassium sorbate, phenoxyethanol, benzalkonium chloride, benzethonium chloride, chlorhexidine chloride, parachlormethacrezole; royal jelly extract, shakyaku extract, hechima extract, rose extract, lemon extract , Aloe extract, Shobu root extract, Eucalyptus extract, Sage extract, Tea extract, Seaweed extract, Placenta extract, Silk extract and other extracts; Zinc oxide, Allantin hydroxyaluminum, Tannic acid, Citrate, Lactic acid and other astringents; Anti-inflammatory agents such as allantin, glycyrrhetinic acid, dipotassium glycyrrhizinate, azulene; deodorants such as methacrylate laurate, methyl benzoate, methyl phenylacetate, geranylcrotolate, acetophenone myristate, benzyl acetate, benzyl propionate, green tea extract Dethyla Ultraviolet absorbers such as hexyl minohydroxybenzoyl benzoate, 2-ethylhexyl paramethoxysilicate, ethylhexyltriazone, oxybenzone, hydroxybenzophenone sulfonic acid, sodium dihydroxybenzophenone sulfonate, dihydroxybenzophenone; zinc oxide, titanium oxide, octyltrimethoxy Ultraviolet scattering agents such as silane-coated titanium oxide; whitening agents such as arbutin and oxalic acid; N, N-diethyl-m-toluamide (diet), di-n-butylsuccinate, hydroxyanisole, rotenone, ethyl-butylacetylamino Propionate, Icaridine (Picaridin), p-menthane-3,8-diol, 3- [acetyl (butyl) amino] ethyl propionate, 2- (2-hydroxyethyl) piperidine-1-methylpropyl carboxylate Pest repellents such as; antiperspirants such as chlorohydroxyaluminum and isopropylmethylphenol; anti-inflammatory analgesics such as methyl salicylate, indomethacin, ferrbinac, ketoprofen and the like.

When the active ingredient is blended, the content of the active ingredient is not particularly limited. As an example, the content of the active ingredient is preferably 0.1% by mass or more, and more preferably 0.3% by mass or more in the post-foaming composition. The content of the active ingredient in the post-foaming composition is preferably 20% by mass or less, more preferably 15% by mass or less. When the content of the active ingredient is within the above range, the effect of blending the active ingredient can be easily obtained, and the post-foaming composition is unlikely to have its foamability lowered by the active ingredient.

Alcohol is suitably blended as a solvent for an active ingredient that is difficult to dissolve in water. Further, alcohol is suitably blended for the purpose of adjusting foamability and the like.

Alcohol is not particularly limited. For example, alcohols include monohydric alcohols having 2 to 3 carbon atoms such as ethanol and isopropanol, glycerin, propylene glycol, 1,3-butylene glycol, hexylene glycol, dipropylene glycol, diglycerin and the like. It is valent alcohol.

When alcohol is blended, the content of alcohol is not particularly limited. As an example, the content of alcohol is preferably 1% by mass or more, and more preferably 3% by mass or more in the post-sparkling composition. The alcohol content in the post-foaming composition is preferably 30% by mass or less, more preferably 25% by mass or less. When the content of alcohol is within the above range, the effect of blending alcohol is easily obtained, and the post-foaming composition is less likely to be lowered in foaming property by alcohol.

The monosaccharide is preferably blended for the purpose of adjusting the effervescence.

The monosaccharide is not particularly limited. For example, monosaccharides include sugar alcohols such as sorbitol, erythritol, arabitol, galactitol, glucitol, martitol, mannitol, xylulose; tetroses such as erythritol, D-erythulose, D-treose; D-arabinose, L. -Pentoses such as arabinose, D-xylulose, D-lyxose, L-lyxose, D-ribose, D-xylulose, L-xylulose, D-libulose, L-libulose; D-altrose, L-altrose, D -Lyxoses such as galactose, L-galactose, D-glucose, D-talose, D-mannose, L-sorbose, D-tagatose, D-psicose, D-fructose, and D-mannose.

When a monosaccharide is blended, the content of the monosaccharide is not particularly limited. As an example, the content of the monosaccharide is preferably 0.5% by mass or more, and more preferably 1% by mass or more in the post-sparkling composition. The content of the monosaccharide is preferably 20% by mass or less, and more preferably 10% by mass or less in the post-foaming composition. When the content of the monosaccharide is within the above range, the effect of blending the monosaccharide can be easily obtained.

The water-soluble polymer is suitably blended for the purpose of increasing the foamability of the post-foaming composition and for adjusting the holding power, hardness, elasticity, extensibility and the like of the foam.

The water-soluble polymer is not particularly limited. As an example, the water-soluble polymers include hydroxyethyl cellulose dimethyldiallyl ammonium chloride (polyquaternium 4), dimethyldiacrylic ammonium chloride / acrylamide copolymer (polyoctanium 7), and -O- [2-hydroxy-3-3] chloride. (Trimethylammonio) propyl] hydroxyethyl cellulose (polyquantanium 10), dimethyldiallylammonium chloride / acrylic acid copolymer (polyquantanium 22), -O- [2-hydroxy-3- (lauryldimethylammonio) propyl] hydroxyethyl cellulose (Polyoctanium 24), acrylamide / acrylic acid / dimethyldialylammonium chloride copolymer (polyquantanium 39), 2-methacryloyloxyethyl phosphorylcholine / butyl methacrylate copolymer solution (polyquantanium 51), N, N-dimethylaminoethylmethacryl Diethyl sulfate, N, N-dimethylacrylamide, polyethylene glycol dimethacrylate (polyquaterium 52), 2-methacryloyloxyethyl phosphorylcholine, stearyl methacrylate copolymer (polyquaterium 61), methacryloyloxyethylene phosphorylcholine, butyl methacrylate and methacryl Cationic polymers such as sodium acid (polyquaternium 65); cellulose-based polymers such as hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, sodium carboxymethyl cellulose; xanthan gum, carrageenan, arabic rubber, tragant rubber, cationized gua gum, gua gum, gellan gum, etc. Gum quality: dextran, sodium carboxymethyl dextran, dextrin, pectin, sodium alginate, sodium hyaluronate, polyvinyl alcohol, carboxyvinyl polymer and the like.

When the water-soluble polymer is blended, the content of the water-soluble polymer is not particularly limited. As an example, the content of the water-soluble polymer is preferably 0.01% by mass or more, and more preferably 0.05% by mass or more in the post-foaming composition. The content of the water-soluble polymer is preferably 5% by mass or less, and more preferably 3% by mass or less in the post-foaming composition. When the content of the water-soluble polymer is within the above range, the effect of blending the water-soluble polymer can be easily obtained, the viscosity of the post-foamable composition does not become too high, and the foamability decreases. It's hard to do.

The powder is suitably blended in order to improve the usability such as improving the slipperiness.

The powder is not particularly limited. For example, the powder is talc, zinc oxide, titanium oxide, silica, zeolite, kaolin, mica, magnesium carbonate, calcium carbonate, zinc silicate, magnesium silicate, aluminum silicate, calcium silicate and the like.

When the powder is blended, the content of the powder is not particularly limited. As an example, the content of the powder in the post-foaming composition is preferably 0.1% by mass or more, and more preferably 0.3% by mass or more. Further, the content of the powder is preferably 5% by mass or less, and more preferably 3% by mass or less in the post-foaming composition. When the content of the powder is within the above range, the effect of blending the powder can be easily obtained, and the post-foaming composition is less likely to cause clogging in the discharge passage when discharged.

The method for preparing the post-foaming composition is not particularly limited. The post-foaming composition can be prepared by a conventionally known method. For example, the post-foaming composition can be prepared by adding the above-mentioned surfactant, oil agent, and optional component to water or warm water to prepare an aqueous stock solution, and adding a hydrofluoroolefin to the aqueous stock solution.

(Compressed gas)
The compressed gas may be blended as a pressurizing agent for discharging the post-foaming composition. The compressed gas is not particularly limited. As an example, the compressed gas is nitrogen, air, oxygen, hydrogen, carbon dioxide, nitrous oxide and the like.

When a compressed gas is used, the compressed gas is preferably filled so that the pressure in the container at 25 ° C. is 0.2 MPa or more, and more preferably 0.3 MPa or more. Further, the compressed gas is preferably filled so that the pressure in the container at 25 ° C. is 0.8 MPa or less, and more preferably 0.7 MPa or less. By filling the compressed gas so that the pressure is within the above range, the hydrofluoroolefin is likely to be suppressed from vaporizing even in the airtight container, and a uniform emulsified state with the aqueous stock solution is likely to be maintained. Therefore, the post-foaming composition tends to be evenly discharged to the end in a state of high viscosity.

Returning to the description of the entire post-foaming composition, the filling method for filling the post-foaming composition in an airtight container such as an aerosol container is not particularly limited. As an example, the post-foaming composition can be filled by filling the container body, further filling the container body with a compressed gas, and then attaching a valve mechanism to the container body and sealing the container body. When a double container having an inner container is used as the container body, the post-foaming composition is filled in the inner container, and a pressurizing agent is filled between the outer container and the inner container to form a valve mechanism. It can be filled by attaching and sealing. Further, the post-foaming composition is filled with a pressurizing agent between the outer container and the inner container, the valve mechanism is attached and sealed, the air in the inner container is discharged, and then the inner container is filled from the valve mechanism. You may.

<Discharge product>
The discharge product of one embodiment of the present invention is a discharge product filled with the post-foaming composition described above. The discharge product of the present invention may have a configuration capable of pressurizing and discharging the post-foaming composition, and is a double aerosol product including an outer container and an inner container housed in the outer container. Is preferable. In the present embodiment, as an example, a discharge product mainly provided with a double container having an internal container filled with a post-foaming composition and a valve mechanism attached to the double container will be described.

(Container body)
The container body is a container filled with a post-foaming composition, and is attached to a bottomed tubular outer container, a flexible inner container provided in the outer container, and an opening of the outer container. It consists of a valve mechanism.

The material of the outer container is not particularly limited. As an example, the material of the outer container is a metal such as aluminum or tinplate, various synthetic resins, pressure-resistant glass, or the like. The inner container is not particularly limited. As an example, the inner container is manufactured by bonding an inner bag made by blow-molding a synthetic resin such as polyethylene, polyethylene terephthalate, Eval, or nylon into a single-layer or multi-layer bag shape, and a sheet such as polyethylene, polyethylene terephthalate, or aluminum. It is a flexible container such as a pouch. Hydrofluoroolefins tend to foam when the compressed gas dissolves. Therefore, the inner container is preferably a multilayer inner bag using a synthetic resin having a gas barrier property such as Eval or nylon, or a laminated pouch using a light metal sheet such as aluminum.

(Valve mechanism)
The valve mechanism is a member for closing and sealing the opening of the container body. Further, the valve mechanism mainly includes a housing, a stem having a stem hole that communicates with the inside and outside of the container body, and a stem rubber that is attached around the stem hole and for closing the stem hole. The housing houses the stem. The stem is a substantially cylindrical portion, and a passage in the stem through which the foamable composition passes after being taken into the housing at the time of discharge is formed. Near the lower end of the intra-stem passage, a stem hole is formed to communicate the space inside the housing with the intra-stem passage. A discharge member for discharging the post-foamable composition is attached to the upper end of the stem. The stem rubber is a member that is attached around the stem hole and appropriately shields the internal space of the housing from the outside. The stem rubber is a disk-shaped member, and when not ejected, the inner peripheral surface is brought into close contact with the outer peripheral surface on which the stem hole of the stem is formed to close the stem hole.

(Discharge member)
The discharge member is a member for operating the opening and closing of the valve mechanism to discharge the post-foamable composition, and is attached to the upper end of the stem. The discharge member mainly includes a nozzle portion and an operation portion operated by the user with a finger or the like. The nozzle portion is a substantially cylindrical portion, and a discharge passage through which the post-foaming composition passes is formed. An opening (discharge hole) is formed at the tip of the discharge passage. The post-foaming composition is discharged from the discharge hole. The number and shape of the discharge holes are not particularly limited. There may be a plurality of discharge holes. Further, the shape of the discharge hole may be a substantially circular shape, a substantially angular shape, or the like.

In the discharge product of the present embodiment, when the discharge member is pushed down, the stem of the valve mechanism is pushed down. As a result, the stem rubber bends downward and the stem hole is opened. As a result, the inside of the container body (internal container) and the outside communicate with each other. When the inside and the outside of the container communicate with each other, the post-foamable composition is taken into the housing due to the pressure difference between the pressure inside the container body and the outside, and then passes through the stem hole and the passage inside the stem to the discharge member. It is fed and then discharged from the discharge hole.

The post-foaming composition discharged from the discharge product of the present embodiment is emulsified by an oil agent and a surfactant even though it contains a hydrofluoroolefin having a low boiling point, and vaporization after discharge is suppressed. As a result, the post-foaming composition can be discharged in the form of a gel, and gradually foams after the discharge, and an appropriate cooling feeling can be obtained.

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

(Example 1)
An aqueous stock solution 1 containing no hydrofluoroolefin was prepared according to the following formulation (unit: mass%), and 144 g of the aqueous stock solution 1 and 36 g of hydrofluoroolefin (trans-1-chloro-3,3,3-tri) were prepared. After mixing with fluoropropene and HFO-1233zd (E) and emulsifying, the effervescent composition was filled in the inner bag of the double container. Nitrogen gas was filled between the inner bag and the outer container of the double container, and an aerosol valve was attached. The pressure in the container was 0.7 MPa (25 ° C.).

<Aqueous stock solution 1>
Methylpentanediol dineopentane (* 1) 3.0
Purified water 63.9
Setes-2 (* 9) 1.0
Cocamide DEA (* 11) 5.0
Palmitic acid (* 12) 6.8
Myristic acid (* 13) 1.0
Glycerin (* 14) 10.0
Sorbitol / water (* 15) 5.0
Methylparaben (* 16) 0.1
Triethanolamine (* 17) 4.2
Total 100.0 (mass%)
* 1: Neosolve-MP (trade name), manufactured by Nippon Seika Co., Ltd. * 9: BC-2 (trade name), HLB 8.0, manufactured by Nikko Chemicals Co., Ltd. * 11: Amizole CDE (trade name), Kawa Ken Fine Chemical Co., Ltd. * 12: Lunac P-95 (trade name), Kao Corporation * 13: Lunac MY-98 (trade name), Kao Corporation * 14: Concentrated glycerin (trade name), Made by Kao Corporation * 15: Sorbitol Kao (trade name), Kao Corporation * 16: Platens M (trade name), Ueno Pharmaceutical Co., Ltd. * 17: Triethanolamine-S (trade name), ( Made by Nippon Catalyst Co., Ltd.

(Examples 2 to 9, Comparative Example 1)
An aqueous stock solution was prepared by the same method as in Example 1 except that the formulation of the aqueous stock solution 1 and the blending ratio of the hydrofluoroolefin were changed to the formulations shown in Table 1, and the mixture was mixed with the hydrofluoroolefin and emulsified. The post-foaming composition was filled in the container body.

Using the post-foaming compositions prepared in Examples 1 to 9 and Comparative Example 1, the state at the time of discharge and the state after shearing were evaluated by the following evaluation methods. The results are shown in Table 1.

<State of discharged material at the time of discharge>
The aerosol product was immersed in a constant temperature water bath adjusted to 25 ° C. for 1 hour, and the post-foaming composition was adjusted to 25 ° C. The aerosol container was taken out from the constant temperature water tank, and 1 g was discharged onto the palm. The state of the post-foaming composition after discharge was evaluated according to the following evaluation criteria.
(Evaluation criteria)
⊚: The post-foaming composition was discharged in the form of a transparent gel.
◯: The post-foaming composition was discharged in the form of a gel.
Δ: The post-foaming composition was discharged in the form of a slightly foamed gel.
X: The post-foaming composition was discharged in the form of foam.

<State of discharged material after shearing>
After being discharged into the palm, the effervescent composition was stirred with a finger. After stirring, the state of the effervescent composition was evaluated according to the following evaluation criteria.
(Evaluation criteria)
⊚: The post-foaming composition foamed slowly and gradually became larger, resulting in fine bubbles.
◯: The post-foaming composition foamed slowly and gradually increased in size.
Δ: The post-foaming composition foamed slightly and became slightly larger.
X: In the post-foaming composition, the foam did not become large.

As shown in Table 1, the post-foaming compositions discharged from the discharge products of Examples 1 to 9 are discharged in the form of a gel at the time of discharge, and then mixed with a finger to promote foaming and coating. It was easy to spread and a moderate cooling feeling was obtained. On the other hand, the post-foaming composition discharged from the discharge product of Comparative Example 1 in which no oil was used formed a foam immediately after discharge and could not be discharged in the form of a gel.

Claims (4)

A post-sparkling composition comprising water, a surfactant, an oil agent, and a hydrofluoroolefin having a boiling point of 5 to 25 ° C. The post-foaming composition according to claim 1, wherein the content of the hydrofluoroolefin is 3 to 30% by mass. The post-foaming composition according to claim 1 or 2, wherein the oil agent contains at least one of an ester oil, a hydrocarbon, an alkyl glucoside and an oil and fat. The post-foaming composition according to any one of claims 1 to 3, wherein the oil agent contains a solid oil.