Oil-water separation composition and article

Abstract

The oil-water separation composition has an aqueous phase and an oil phase that separates from the aqueous phase in a static state. The oil-water separation composition contains a polyol derivative in an amount of 0.05% by mass to 5% by mass based on the mass of the composition. The polyol derivative is at least one of a glycerol derivative and a diol derivative.

Description

[0001] Related Application

[0002] This invention claims priority based on Japanese Patent Application: Japanese Patent Application No. 2018-220596 (filed on November 26, 2018), and the entire disclosure of this application is incorporated herein by reference and described herein. Technical Field

[0003] The present disclosure relates to an oil-water separation type composition in which an oil phase and a water phase are separated in a stationary state. In addition, the present disclosure relates to an article having such a composition. Background Art

[0004] An oil-water separation type cosmetic (detergent) in which an oil phase and a water phase are separated into two layers in a stationary state is known (for example, refer to Patent Document 1). Such an oil-water separation type cosmetic is used in a temporarily emulsified state by the user shaking the container. After use, if the container is left stationary, the emulsified state is eliminated, and again, the oil phase and the water phase become separated states.

[0005] Prior Art Documents

[0006] Patent Documents

[0007] Patent Document 1: Japanese Patent Laid-Open No. 2001-213724 Summary of the Invention

[0008] Problems to be Solved by the Invention

[0009] The following analysis is made from the viewpoint of the present disclosure.

[0010] In the case of using an oil-water separation composition as described in Patent Document 1, as described above, it is necessary to form a temporary emulsified state. Therefore, in order for the user to confirm that an emulsified state is formed during use, a transparent container is generally used for the container containing the oil-water separation composition. In addition, in order for even a woman to easily shake the container containing the liquid, a lightweight resin (for example, a polyester resin) is used for the container.

[0011] If a shaking treatment is performed to form a temporary emulsified state, the content comes into contact with the inner surface of such a resin container. According to the conventional oil-water separation composition, the content that comes into contact with the inner surface of the container remains as droplets (spherical liquids) on the entire inner surface of the container above the liquid level. Such droplets cannot be eliminated only by standing still and stay on the inner wall surface of the container for a long time. Since the container is transparent, such droplets can be seen through, which impairs the appearance of the product including the container.

[0012] In addition, if the container is allowed to stand after temporary emulsification, the oil phase and the water phase in the oil-water separation composition are separated again. However, if the re-separation is insufficient, the interface between the oil phase and the water phase becomes unclear, thereby also impairing the appearance of the product.

[0013] In the case of a product such as a cosmetic where the oil-water separation composition is concerned, the aesthetics of the product are also emphasized. Therefore, in order to maintain the aesthetics of the product well, it is required that the adhesion of the droplets to the inner surface of the container does not continue for a long time. In addition, an oil-water separation composition in which the interface between the oil phase and the water phase becomes clear after emulsification.

[0014] Means for Solving the Problem

[0015] According to a first aspect of the present disclosure, there is provided an oil-water separation composition comprising an aqueous phase and an oil phase that separates from the aqueous phase in a standing state. The oil-water separation composition contains a polyol derivative in an amount of 0.06% by mass to 1.8% by mass based on the mass of the composition. The polyol derivative is at least one of the glycerol derivative represented by Chemical Formula 1 and the diol derivative represented by Chemical Formula 2.

[0016] [Chemical Formula 1]

[0017]

[0018] In the chemical formula shown in Chemical Formula 1, R 1 , R 2 and R 3 Any one of them is an alkyl group, alkenyl group or acyl group having 4 to 15 carbon atoms, and any two of them are hydrogen atoms.

[0019] [Chemical Formula 2]

[0020]

[0021] In the chemical formula shown in Chemical Formula 2, R 4 and R 5 One of them is an alkyl group, alkenyl group or acyl group having 10 to 20 carbon atoms, and the other is a hydrogen atom. R 6 Is an alkyl group, alkenyl group, acyl group or hydrogen atom having 1 to 4 carbon atoms.

[0022] According to a second aspect of the present disclosure, there is provided an article comprising the composition according to the first aspect and a container containing the composition. At least a part of the container has transparency that allows the inside to be recognized.

[0023] Effects of the Invention

[0024] The oil-water separation composition of the present disclosure suppresses the remaining of droplets on the inner wall surface of the container. In addition, when the oil phase and the water phase are re-separated after temporary emulsification, the interface between the oil phase and the water phase becomes clear. As a result, a good appearance of the container filled with the oil-water separation composition can be maintained. Description of the Drawings

[0025] Figure 1 Photograph of a sample showing a reference example for droplet residue evaluation in the test examples.

[0026] Figure 2 Photograph of a sample showing a reference example for droplet residue evaluation in the test examples.

[0027] Figure 3 Photograph of a sample showing a reference example for droplet residue evaluation in the test examples.

[0028] Figure 4 Photograph of a sample showing a reference example for interface evaluation in the test examples.

[0029] Figure 5 Photograph of a sample showing a reference example for interface evaluation in the test examples.

[0030] Figure 6 Photographs of the samples in Test Examples 1 to 3.

[0031] Figure 7 Photographs of the samples after oscillation in Test Examples 1, 3, and 4.

[0032] Figure 8 Photographs of the samples after oscillation in Test Examples 5, 7, and 8.

[0033] Figure 9 Photographs of the samples after oscillation in Test Examples 6, 9, and 10.

[0034] Figure 10 Photographs of the samples after oscillation in Test Examples 1 and 11 to 13.

[0035] Figure 11 Photographs of the samples after oscillation in Test Examples 2, 3, 14, and 15. Detailed Description of the Invention

[0036] Preferred embodiments of each of the above angles are described below.

[0037] According to the preferred embodiment of the first angle described above, the oil-water separation composition further contains 0.01% to 0.1% by mass of an alkyl betaine type surfactant.

[0038] According to the preferred embodiment of the first angle described above, the content rate of the surfactant is 0.2% by mass or less relative to the mass of the composition.

[0039] According to the preferred embodiment of the first angle described above, the oil-water separation composition further contains 0.1% to 5% by mass of a salt relative to the mass of the composition.

[0040] According to the preferred embodiment of the above first aspect, the glycerol derivative contains at least one of ethylhexylglycerol and hexylglycerol.

[0041] According to the preferred embodiment of the above first aspect, the diol derivative contains at least one of propylene glycol laurate, propylene glycol stearate, and propylene glycol isostearate.

[0042] According to the preferred embodiment of the above first aspect, the content rate of the oil phase is 20% by mass to 80% by mass relative to the mass of the composition. The content rate of the aqueous phase is 20% by mass to 80% by mass relative to the mass of the composition.

[0043] According to the preferred embodiment of the above first aspect, the oil-water separation composition is used in a state where the user makes the composition form a temporary emulsion.

[0044] According to the preferred embodiment of the above first aspect, the oil-water separation composition is a cosmetic.

[0045] According to the preferred embodiment of the above first aspect, the oil-water separation composition is a detergent for cosmetics.

[0046] According to the preferred embodiment of the above first aspect, the oil-water separation composition is of the leave-on type.

[0047] According to the preferred embodiment of the above second aspect, the container contains polyester.

[0048] In the following description, POE is an abbreviation for polyoxyethylene, POP is an abbreviation for polyoxypropylene, and the number in parentheses after POE or POP represents the average number of moles of addition of the POE group or POP group in the compound.

[0049] In the present disclosure, the so-called "effective mass" refers to the amount that can produce the effect brought about by the addition of the compound.

[0050] The oil-water separation composition according to the first embodiment of the present disclosure will be described.

[0051] The oil-water separation composition according to the first embodiment has a liquid oil phase and a liquid aqueous phase. In a state where the oil-water separation composition has been allowed to stand for a sufficient time (when not in use), the main part of the oil phase and the main part of the aqueous phase are separated into two layers (unemulsified) vertically.

[0052] The oil-water separation composition according to the first embodiment contains a polyol derivative. The polyol derivative contains at least one of a glycerol derivative and a diol derivative.

[0053] As glycerol derivatives, for example, alkyl glyceryl ethers and / or glycerol esters, particularly monoalkyl glyceryl ethers, can be used. The glycerol derivative can be the compound shown in Chemical Formula 3. In the chemical formula shown in Chemical Formula 3, any one of R 1 、R 2 and R 3 can be an alkyl group, alkenyl group or acyl group having 4 to 15 carbon atoms, and any two of them can be hydrogen atoms. The alkyl group, alkenyl group or acyl group can be linear or branched. The number of carbon atoms of the alkyl group, alkenyl group or acyl group is preferably 4 or more. The number of carbon atoms of the alkyl group, alkenyl group or acyl group is preferably 15 or less, more preferably 12 or less.

[0054] Examples of the glycerol derivative include ethylhexylglycerol (octyloxyglycerol), hexylglycerol, glyceryl isooctanoate, polyglyceryl-2 laurate, glyceryl monocaprylate, etc. Among them, from the viewpoint of eliminating droplets adhering to the inner surface of the container, ethylhexylglycerol having 2-ethylhexyl and / or hexylglycerol having hexyl are preferred. As commercially available products of ethylhexylglycerol, for example, Sensiva SC50 (manufactured by Schulke&Mayr) can be mentioned.

[0055] [Chemical Formula 3]

[0056]

[0057] As diol derivatives, for example, diol esters and / or diol ethers can be used. As diol derivatives, for example, propylene glycol fatty acid esters and / or propylene glycol ethers, particularly propylene glycol mono-fatty acid esters, can be used. The diol derivative can be the compound shown in Chemical Formula 4. In the chemical formula shown in Chemical Formula 4, one of R 4 and R 5 can be an alkyl group, alkenyl group or acyl group having 10 to 20 carbon atoms, and the other can be a hydrogen atom. R 6 can be an alkyl group, alkenyl group, acyl group or hydrogen atom having 1 to 4 carbon atoms. The alkyl group, alkenyl group or acyl group can be linear or branched.

[0058] Examples of the diol derivative include propylene glycol laurate, propylene glycol stearate, propylene glycol isostearate, etc.

[0059] [Chemical Formula 4]

[0060]

[0061] The glycerol derivative and the diol derivative can be present in either the oil phase or the water phase.

[0062] The content rate of the polyol derivative is preferably 0.06% by mass or more, more preferably 0.07% by mass or more, and still more preferably 0.08% by mass or more with respect to the mass of the composition. The content rate of the polyol derivative with respect to the mass of the composition may be 0.1% by mass or more, 0.2% by mass or more, or 0.5% by mass or more. If the polyol derivative is less than 0.06% by mass, the above effects cannot be fully obtained. The content rate of the polyol derivative is preferably 1.8% by mass or less, more preferably 1.5% by mass or less, and still more preferably 1.2% by mass or less with respect to the mass of the composition. The content rate of the polyol derivative with respect to the mass of the composition may be 1% by mass or less, 0.8% by mass or less, or 0.5% by mass or less. If the polyol derivative exceeds 1.8% by mass, the interface between the oil phase and the water phase becomes unclear.

[0063] By blending the polyol derivative, it is possible to suppress the oil-water separation composition from continuously adhering to the inner surface of the container at the upper part of the liquid as droplets. Even if droplets are formed on the inner wall of the container, the droplets can naturally disappear in a short time. Thereby, it is possible to suppress the droplets adhering to the inner surface of the container from being seen through, and improve the appearance of the product. It is considered that the effect of eliminating droplets brought about by the polyol derivative is particularly effective for resin containers, especially containers containing polyester resins such as polyethylene terephthalate (PET).

[0064] In addition, the polyol derivative also has the effect of making the interface between the oil phase and the water phase clear when the oil phase and the water phase are re-separated after temporary emulsification and standing. Thereby, the appearance of the oil-water separation composition seen through the container can be further improved.

[0065] When the oil-water separation composition is a detergent, the compound shown in Chemical Formula 3 can also improve the detergency.

[0066] The oil phase in the oil-water separation composition according to the first embodiment can be appropriately set according to the purpose of the oil-water separation composition. For example, the oil phase can be an oily component that can dissolve the oil-soluble components blended in the oil-water separation composition. When the oil-water separation composition is used as a detergent, the oil phase can be an oily component useful for removing the object to be washed (for example, cosmetics). The oil phase is preferably liquid at room temperature.

[0067] As the oily components in the oil phase, for example, liquid oils and fats, solid oils and fats, waxes, hydrocarbons, higher fatty acids, higher alcohols, synthetic ester oils, silicone oils, etc. can be used.

[0068] As liquid oils and fats, examples include: avocado oil, camellia oil, turtle oil, macadamia nut seed oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, almond oil, wheat germ oil, camellia flower oil, castor oil, linseed oil, safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, tea seed oil, torreya seed oil, rice bran oil, Chinese tung oil, Japanese tung oil, jojoba oil, germ oil, triglyceride, etc.

[0069] As solid oils and fats, examples include: cocoa butter, coconut oil, horse oil, hydrogenated coconut oil, palm oil, beef tallow, mutton tallow, hydrogenated beef tallow, palm kernel oil, lard, beef bone fat, wood wax kernel oil, hydrogenated oil, beef foot fat, wood wax, hydrogenated castor oil, etc.

[0070] As waxes, examples include: beeswax, candelilla wax, cotton wax, carnauba wax, myrica wax, insect wax (white wax), spermaceti wax, montan wax, rice bran wax, lanolin, kapok wax, acetylated lanolin, liquid lanolin, sugarcane wax, isopropyl lanolate, hexyl laurate, reduced lanolin, jojoba wax, anhydrous lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, polyethylene glycol lanolate, POE hydrogenated lanolin alcohol ether, etc.

[0071] As hydrocarbon oils, examples include: liquid paraffin, ozokerite, squalane, pristane, paraffin wax, pure ozokerite, squalene, petrolatum, microcrystalline wax, n-hexane, isohexane, cyclohexane, n-octane, isooctane, n-nonane, n-decane, isododecane, isohexadecane, etc.

[0072] As higher fatty acids, examples include: lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecenoic acid, tall oil fatty acid, isostearic acid, linoleic acid, linolenic acid, eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), etc.

[0073] As higher alcohols, for example, the following can be used: straight-chain alcohols (such as lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetearyl alcohol, etc.); branched-chain alcohols (such as monostearyl glycerol ether (batyl alcohol), 2-decyltetradecanol, lanolin alcohol, cholesterol, phytosterol, hexyl dodecanol, isostearyl alcohol, octyldodecanol, etc.).

[0074] Examples of the ester oil include isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyl decyl dimethyl octanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12 - hydroxystearate, ethylene glycol di - 2 - ethylhexanoate, dipentaerythritol fatty acid ester, N - alkyl glycol monoisostearate, neopentyl glycol didecanoate, diisostearyl malate, glycerol di(2 - heptylundecanoate), trimethylolpropane tris(2 - ethylhexanoate), trimethylolpropane triisostearate, pentaerythritol tetra(2 - ethylhexanoate), glycerol tri(2 - ethylhexanoate), glyceryl trioctanoate, glyceryl triisopalmitate, trimethylolpropane triisostearate, cetyl 2 - ethylhexanoate, 2 - ethylhexyl palmitate, glyceryl trimyristate, glycerol tri(2 - heptylundecanoate), methyl ricinoleate, oleyl oleate, acetyl glyceride, 2 - heptylundecyl palmitate, diisobutyl adipate, 2 - octyldodecyl N - lauroyl - L - glutamate, di(2 - heptylundecyl) adipate, ethyl laurate, di(2 - ethylhexyl) sebacate, 2 - hexyldecyl myristate, 2 - hexyldecyl palmitate, 2 - hexyldecyl adipate, diisopropyl sebacate, 2 - ethylhexyl succinate, triethyl citrate, etc.

[0075] Examples of the silicone oil include dimethylpolysiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane, stearyloxymethylpolysiloxane, polyether - modified organopolysiloxane, fluoroalkyl / polyalkylene oxide - co - modified organopolysiloxane, alkyl - modified organopolysiloxane, end - modified organopolysiloxane, fluoro - modified organopolysiloxane, amino - modified organopolysiloxane, silica gel, acrylic silicone, trimethylsilyloxy silicate, organosilicon compounds such as organosilicon RTV rubber, etc.

[0076] Among the above - mentioned oily components, hydrocarbon oils, ester oils, silicone oils, etc. are more preferable from the viewpoint of the detergency of the oily cosmetic.

[0077] The content rate of the oil phase is preferably 20% by mass or more, more preferably 30% by mass or more, and further preferably 40% by mass or more with respect to the mass of the composition. If the oil phase is less than 20% by mass, the balance with the amount of the aqueous phase deteriorates. The content rate of the oil phase with respect to the mass of the composition is, for example, preferably 80% by mass or less, more preferably 70% by mass or less, and further preferably 60% by mass or less. If the oil phase exceeds 80% by mass, the balance with the amount of the aqueous phase deteriorates.

[0078] The aqueous phase contains water. As the water in the aqueous phase, the water used in cosmetics, quasi-drugs, etc. can be used. For example, pure water, ion-exchanged water, tap water, etc. can be used.

[0079] The aqueous phase may further contain a water-soluble alcohol. As the water-soluble alcohol, for example, at least one selected from the following can be cited: lower alcohols, polyhydric alcohols, polyhydric alcohol polymers, dihydric alcohol alkyl ethers, dihydric alcohol alkyl ethers, dihydric alcohol ether esters, glycerol monoalkyl ethers, sugar alcohols, monosaccharides, oligosaccharides, polysaccharides, and their derivatives, etc.

[0080] As the lower alcohol, for example, ethanol, propanol, isopropanol, isobutanol, tert-butanol, etc. can be cited.

[0081] Examples of the polyol include: dihydric alcohols (e.g., ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butanediol, 1,3-butanediol, tetramethylene glycol, 2,3-butanediol, pentamethylene glycol, 2-butene-1,4-diol, hexanediol, octanediol, etc.); trihydric alcohols (e.g., glycerin, trimethylolpropane, etc.); tetrahydric alcohols (e.g., pentaerythritol such as 1,2,6-hexanetriol, etc.); pentahydric alcohols (e.g., xylitol, etc.); hexahydric alcohols (e.g., sorbitol, mannitol, etc.); polyol polymers (e.g., diethylene glycol, dipropylene glycol, triethylene glycol, polypropylene glycol, tetraethylene glycol, diglycerol, polyethylene glycol, triglycerol, tetraglycerol, polyglycerol, etc.); dihydric alcohol alkyl ethers (e.g., ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol monohexyl ether, ethylene glycol mono-2-methylhexyl ether, ethylene glycol isoamyl ether, ethylene glycol benzyl ether, ethylene glycol isopropyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, etc.); dihydric alcohol alkyl ethers (e.g., diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol butyl ether, diethylene glycol methyl ethyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol isopropyl ether, dipropylene glycol methyl ether, dipropylene glycol ethyl ether, dipropylene glycol butyl ether, etc.); dihydric alcohol ether esters (e.g., ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monophenyl ether acetate, ethylene glycol diadipate, ethylene glycol disuccinate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, propylene glycol monophenyl ether acetate, etc.); glycerol monoalkyl ethers (e.g., batyl alcohol, selachyl alcohol, chimyl alcohol, etc.); sugar alcohols (e.g., sorbitol, maltitol, maltotriose, mannitol, sucrose, erythritol, glucose, fructose, starch hydrolysate sugar, maltose, xylitol, starch hydrolysate reducing alcohol, etc.); glycolide; tetrahydrofurfuryl alcohol; POE-tetrahydrofurfuryl alcohol; POP-butyl ether; POP / POE-butyl ether; polyoxypropylene glycerol ether; POP-glycerol ether; POP-glycerol ether phosphate; POP / POE-pentaerythritol ether, polyglycerol, etc.

[0082] As monosaccharides, for example, at least one selected from the following can be cited: trioses (e.g., D-glyceraldehyde, dihydroxyacetone, etc.); tetroses (e.g., D-erythrose, D-erythrulose, D-threose, erythritol, etc.); pentoses (e.g., L-arabinose, D-xylose, L-lyxose, D-arabinose, D-ribose, D-ribulose, D-xylulose, L-xylulose, etc.); hexoses (e.g., D-glucose, D-talose, D-psicose, D-galactose, D-fructose, L-galactose, L-mannose, D-tagatose, etc.); heptoses (e.g., heptaldose, heptulose, etc.); octoses (e.g., octulose, etc.); deoxy sugars (e.g., 2-deoxy-D-ribose, 6-deoxy-L-galactose, 6-deoxy-L-mannose, etc.); amino sugars (e.g., D-glucosamine, D-galactosamine, sialic acid, amino sugar uronic acid, muramic acid, etc.); uronic acids (e.g., D-glucuronic acid, D-mannuronic acid, L-guluronic acid, D-galacturonic acid, L-iduronic acid, etc.), etc.

[0083] As oligosaccharides, for example, at least one selected from the following can be cited: sucrose, gentianose, umbelliferose, lactose, plantenose, isodulcitol, α,α-trehalose, raffinose, lychnose, Umbilicin (3-O-β-D-Galactofuranosyl-D-Arabinitol), stachyose, verbascose, etc.

[0084] As polysaccharides, for example, at least one selected from the following can be cited: cellulose, quince seeds, chondroitin sulfate, starch, galactan, dermatan sulfate, glycogen, gum arabic, heparan sulfate, hyaluronic acid, tragacanth gum, keratan sulfate, chondroitin, xanthan gum, mucin sulfate, guar gum, dextran, keratosulfate, locust bean gum, succinoglycan, caronin acid, etc.

[0085] As other polyols, for example, at least one selected from the following can be cited: polyoxyethylene methyl glucoside (GlucamE-10), polyoxypropylene methyl glucoside (Glucam P-10), etc.

[0086] Among the above, as water-soluble alcohols, from the viewpoints of emulsion adjustment and preservativeness, ethanol, butanediol, dipropylene glycol, etc. are more preferred.

[0087] The content of the water phase is preferably 20% by mass or more, more preferably 30% by mass or more, and further preferably 40% by mass or more relative to the mass of the composition. If the water phase is less than 20% by mass, the balance between the amount of the water phase and the oil phase becomes worse. The content of the water phase is, for example, preferably 80% by mass or less, more preferably 70% by mass or less, and further preferably 60% by mass or less relative to the mass of the composition. If the water phase exceeds 80% by mass, the balance between the amount of the water phase and the oil phase becomes worse.

[0088] The oil-water separation composition may further contain a surfactant. The surfactant may be added in order to temporarily emulsify the oil phase and the water phase by shaking during use. In addition, when the oil-water separation composition is a detergent, a surfactant may be added in order to improve the detergency. Examples of the surfactant include the following surfactants.

[0089] [Anionic surfactant]

[0090] As the anionic surfactant, for example, fatty acid soaps (e.g., sodium laurate, sodium palmitate, etc.); higher alkyl sulfate ester salts (e.g., sodium lauryl sulfate, potassium lauryl sulfate, etc.); alkyl ether sulfate ester salts (e.g., POE-lauryl sulfate triethanolamine, POE-lauryl sulfate sodium, etc.); N-acyl sarcosine (e.g., sodium lauroyl sarcosinate, etc.); higher fatty acid amide sulfonates (e.g., sodium N-stearoyl-N-methyl taurate, sodium N-myristoyl-N-methyl taurate, sodium coconut fatty acid methyl taurate, sodium lauryl methyl taurate, etc.); phosphate ester salts (POE-oleyl ether sodium phosphate, POE-stearyl ether phosphate, etc.); sulfosuccinates (e.g., sodium di(2-ethylhexyl)sulfosuccinate, monolauroyl monoethanolamide polyoxyethylene sulfosuccinate, etc.); alkylbenzenesulfonates (e.g., sodium linear dodecylbenzenesulfonate, triethanolamine linear dodecylbenzenesulfonic acid, linear dodecylbenzenesulfonic acid, etc.); higher fatty acid ester sulfate salts (e.g., sodium hydrogenated coconut oil fatty acid glycerol sulfate, etc.); N-acyl glutamic acid salts (e.g., monosodium N-lauroyl glutamate, disodium N-stearoyl glutamate, monosodium N-myristoyl-L-glutamate, etc.); sulfated oils (e.g., Turkey red oil (Loto oil), etc.); POE-alkyl ether carboxylic acid; POE-alkyl allyl ether carboxylate; α-olefin sulfonate; higher fatty acid ester sulfonate; secondary alcohol sulfate ester salt; higher fatty acid alkanolamide sulfate ester salt; sodium lauroyl monoethanolamide succinate; N-palmitoyl aspartic acid di-triethanolamine; casein sodium, etc.

[0091] [Cationic surfactant]

[0092] As cationic surfactants, for example, the following can be cited: alkyltrimethylammonium salts (e.g., stearyltrimethylammonium chloride, lauryltrimethylammonium chloride, etc.); alkylpyridine salts (e.g., cetylpyridinium chloride , etc.); dialkyldimethylammonium salts (e.g., distearyldimethylammonium chloride); poly(N,N'-dimethyl-3,5-methylenepiperidine ) chloride; alkyl quaternary ammonium salts; alkyl dimethylbenzylammonium salts; alkyl isoquinoline salts; dialkylmorpholine salts; POE-alkylamines; alkylamine salts; polyamine fatty acid derivatives; pentanol fatty acid derivatives; benzalkonium chloride; benzethonium chloride; amino acid-based cationic surfactants (e.g., N-coconut oil fatty acyl-L-arginine ethyl ester / DL-pyrrolidone carboxylate), etc.

[0093] [Amphoteric surfactants]

[0094] As amphoteric surfactants, for example, the following can be cited: imidazoline-based amphoteric surfactants (e.g., 2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium, 2-cocoyl-2-imidazoline hydroxide-1-carboxyethoxy disodium salt, etc.); betaine-based surfactants (e.g., 2-heptadecyl-N-carboxymethyl-N-hydroxyethyl imidazoline betaine, lauryl dimethylaminoacetate betaine, alkyl betaine, amide betaine, sulfobetaine, etc.).

[0095] [Hydrophilic nonionic surfactants]

[0096] As hydrophilic nonionic surfactants, examples include: POE-sorbitan fatty acid esters (e.g., POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.); POE-sorbitol fatty acid esters (e.g., POE-sorbitol monolaurate, POE-sorbitol monooleate, POE-sorbitol pentaoleate, POE-sorbitol monostearate, etc.); POE-glycerol fatty acid esters (e.g., POE-glycerol monostearate, POE-glycerol monoisostearate, POE-glycerol triisostearate, POE-monooleate, etc.); POE-fatty acid esters (e.g., POE-distearate, POE-mono dioleate, ethylene glycol distearate, etc.); POE-alkyl ethers (e.g., POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE-cholesteryl ether, etc.); Pluronic type (e.g., Pluronic, etc.); POE / POP-alkyl ethers (e.g., POE / POP-cetyl ether, POE / POP-2-decyltetradecyl ether, POE / POP-monobutyl ether, POE / POP-hydrogenated lanolin, POE / POP-glycerol ether, etc.); tetra POE / tetra POP ethylenediamine condensate (e.g., Tetronic, etc.); POE-castor oil hydrogenated castor oil derivatives (e.g., POE-castor oil, POE-hydrogenated castor oil, POE-hydrogenated castor oil monoisostearate, POE-hydrogenated castor oil triisostearate, POE-hydrogenated castor oil monopyroglutamic acid monoisostearate diester, POE-hydrogenated castor oil maleate, etc.); POE-beeswax / lanolin derivatives (e.g., POE-sorbitol beeswax, etc.); alkanolamides (e.g., coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.); POE-propylene glycol fatty acid esters; POE-alkylamines; POE-fatty acid amides; sucrose fatty acid esters; alkyl ethoxydimethylamine oxides; trioleyl phosphate, etc.

[0097] [Lipophilic nonionic surfactant]

[0098] As lipophilic nonionic surfactants, examples include: sorbitan fatty acid esters (e.g., sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, diglycerol sorbitan penta-2-ethylhexanoate, diglycerol sorbitan tetra-2-ethylhexanoate, etc.); polyglycerol fatty acid glycerides (e.g., glycerol monocottonseed fatty acid ester, glycerol monoeicosapentaenoate, glycerol sesquioleate, glycerol monostearate, α,α’-oleoyl pyroglutamic acid glycerol ester, glycerol malic acid monostearate, etc.); propylene glycol fatty acid esters (e.g., propylene glycol monostearate, etc.); hydrogenated castor oil derivatives; glycerol alkyl ethers, etc.

[0099] When using the oil-water separation composition as a non-rinse skin detergent, from the viewpoint of low irritation to the skin, the surfactant is more preferably alkyl betaine, N-coconut oil fatty acyl-L-arginine ethyl ester / DL-pyrrolidone carboxylate (ethyl cocoyl arginate PCA), benzalkonium chloride, etc.

[0100] The content of the surfactant is preferably 0.02% by mass or more, more preferably 0.05% by mass or more, and further preferably 0.07% by mass or more based on the mass of the composition. If the surfactant is less than 0.02% by mass, a temporary emulsified state cannot be formed. The content of the surfactant is preferably 0.3% by mass or less, more preferably 0.2% by mass or less, and further preferably 0.15% by mass or less based on the mass of the composition. If the content of the surfactant exceeds 0.3% by mass, after temporary emulsification by shaking, the emulsified state does not disappear and does not return to the oil-water two-layer state. In addition, when the oil-water separation composition is made into a non-rinse skin detergent, the irritation to the skin becomes stronger, and stickiness occurs.

[0101] The oil-water separation composition may further contain salts.

[0102] The salt can be an inorganic salt or an organic salt. Examples of the salt include sodium chloride, potassium chloride, sodium citrate, sodium ethylenediaminetetraacetate, etc.

[0103] The content of the salt is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and further preferably 0.3% by mass or more based on the mass of the composition. If the salt is less than 0.1% by mass, the above effects cannot be fully obtained. The salt is preferably 2% by mass or less, more preferably 1.5% by mass or less, and further preferably 1% by mass or less based on the mass of the composition. If the salt exceeds 2% by mass, the emulsification after shaking becomes insufficient.

[0104] The oil-water separation composition may further contain a trialkylamine oxide. The trialkylamine oxide may be added to remove a dye that colors the skin from the skin. For example, the trialkylamine oxide may be added to remove an acidic dye that binds to the proteins of the skin through chemical interactions (e.g., ionic interactions). The trialkylamine oxide may also be used as a wash-free detergent that does not need to be washed off.

[0105] The trialkylamine oxide may be water-soluble or water-insoluble (oil-soluble). The trialkylamine oxide may be a mixture of a water-soluble trialkylamine oxide and an oil-soluble trialkylamine oxide. The solubility in water or an oily component may be adjusted by the length of the alkyl group of the trialkylamine oxide.

[0106] The trialkylamine oxide may be dissolved in both the oil phase and the water phase. For example, when the trialkylamine oxide is oil-soluble, it may be added to the water phase by dissolving the trialkylamine oxide in a water-soluble alcohol.

[0107] The trialkylamine oxide may have the structure shown in Chemical Formula 5. R 7 、R 8 and R 9 may each be a straight-chain alkyl group or a branched-chain alkyl group. For example, any two of R 7 、R 8 and R 9 (e.g., R 7 and R 8 ) may be alkyl groups having 1 to 4 carbon atoms. The remaining one of R 7 、R 8 and R 9 (e.g., R 9 ) may be an alkyl group having 12 to 26 carbon atoms. The alkyl group having 12 to 26 carbon atoms may be at least one of, for example, dodecyl (lauryl), octadecyl (stearyl), and decyltetradecyl. For example, in the trialkylamine oxide, as shown in Chemical Formula 6, for example, R 7 and R 8 may be methyl groups. R 9 may be decyltetradecyl.

[0108] [Chemical Formula 5]

[0109]

[0110] [Chemical Formula 6]

[0111]

[0112] The content rate of the trialkylamine oxide is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, more preferably 0.05% by mass or more, more preferably 0.08% by mass or more, more preferably 0.1% by mass or more, more preferably 0.12% by mass or more, more preferably 0.15% by mass or more, and further preferably 0.18% by mass or more, based on the mass of the composition. If the content of the component (A) is less than 0.01% by mass, the detergency for the dye component is reduced. The content rate of the trialkylamine oxide, based on the mass of the composition, may be, for example, 2% by mass or less, 1% by mass or less, 0.8% by mass or less, 0.6% by mass or less, or 0.4% by mass or less.

[0113] The oil-water separation composition of the present disclosure may appropriately contain other components as needed within the range that does not interfere with the effects of the present disclosure, such as powders, humectants, water-soluble polymers, thickeners, film-forming agents, ultraviolet absorbers, sequestering agents, amino acids, organic amines, polymer emulsions, pH adjusters, skin nutrients, vitamins, antioxidants, antioxidant aids, fragrances, and the like.

[0114] The terms "powder" and "dust" used in this specification are synonymous. The powder may be any powder that can be generally used in applications such as cosmetics, without particular limitation. As the powder, for example, the following can be used: inorganic powders (e.g., talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, red mica, biotite, lepidolite, calcined mica, calcined talc, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, silicon dioxide, zeolite, glass, barium sulfate, calcined calcium sulfate (plaster of Paris), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, metal soaps (e.g., zinc myristate, calcium palmitate, aluminum stearate), boron nitride, etc.); organic powders (e.g., polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene powder, copolymer resin powder of styrene and acrylic acid, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, silicone resin powder, silk powder, wool powder, polyurethane powder, etc.); inorganic white pigments (e.g., titanium dioxide, zinc oxide, etc.); inorganic red pigments (e.g., iron oxide (iron oxide red), iron titanate, etc.); inorganic brown pigments (γ-iron oxide, etc.), inorganic yellow pigments (iron oxide yellow, loess, etc.), inorganic black pigments (iron oxide black, carbon black, low-valent titanium oxide, etc.), inorganic purple pigments (e.g., manganese violet, cobalt violet, etc.); inorganic green pigments (e.g., chromium oxide, chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments (e.g., ultramarine, navy blue, etc.); pearlescent pigments (e.g., titanium oxide-coated mica, titanium oxide-coated bismuth oxychloride, titanium oxide-coated talc, colored titanium oxide-coated mica, bismuth oxychloride, fish scale foil, etc.); metal powder pigments (e.g., aluminum powder, copper powder, etc.); organic pigments such as zircon, barium or aluminum lakes (e.g., organic pigments such as Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 228, Red No. 405, Orange No. 203, Orange No. 204, Yellow No. 205, Yellow No. 401 and Blue No. 404, etc., Red No. 3, Red No. 104, Red No. 106, Red No. 227, Red No. 230, Red No. 401, Red No. 505, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Green No. 3 and Blue No. 1, etc.); natural pigments (e.g., chlorophyll, β-carotene, etc.).

[0115] As a humectant, examples thereof include polyethylene glycol, propylene glycol, glycerin, 1,3-butanediol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, sulfomucin, calonic acid, telopeptide-free collagen, cholesteryl 12-hydroxy stearate, sodium lactate, bile salts, dl-pyrrolidone carboxylate, alkylene oxide derivatives, short-chain soluble collagen, diglycerol (EO) PO adduct, Rosa roxburghii extract, Achillea millefolium extract, Melilotus officinalis extract, etc.

[0116] As natural water-soluble polymers, examples thereof include plant-derived polymers (e.g., gum arabic, tragacanth, galactan, guar gum, carob gum, sterculia gum, carrageenan, pectin, agar, quince seed (marmelo), algal colloids (brown algae extract), starch (rice, corn, potato, wheat), glycyrrhizic acid); microorganism-derived polymers (e.g., xanthan gum, dextran, succinoglycan, pullulan, etc.); animal-derived polymers (e.g., collagen, casein, albumin, gelatin, etc.).

[0117] As semi-synthetic water-soluble polymers, examples thereof include starch-based polymers (e.g., carboxymethyl starch, methylhydroxypropyl starch, etc.); cellulose-based polymers (methylcellulose, ethylcellulose, methylhydroxypropyl cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, hydroxypropyl cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose, crystalline cellulose, cellulose powder, etc.); alginic acid-based polymers (e.g., sodium alginate, propylene glycol alginate, etc.).

[0118] As synthetic water-soluble polymers, examples thereof include ethylene-based polymers (e.g., polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, carboxyvinyl polymer, etc.); polyoxyethylene-based polymers (e.g., polyoxyethylene-polyoxypropylene copolymer of polyethylene glycol 20,000, 40,000, 60,000, etc.); acrylic acid-based polymers (e.g., sodium polyacrylate, ethyl acrylate, polyacrylamide, etc.); polyethyleneimine; cationic polymers, etc.

[0119] As thickeners, examples thereof include gum arabic, carrageenan, sterculia gum, tragacanth, carob gum, quince seed (marmelo), casein, dextrin, gelatin, sodium pectate, sodium alginate, methylcellulose, ethylcellulose, carboxymethyl cellulose (CMC), hydroxyethyl cellulose, hydroxypropyl cellulose, polyvinyl alcohol (PVA), polyvinyl methyl ether (PVM), PVP (polyvinylpyrrolidone), sodium polyacrylate, carboxyvinyl polymer, locust bean gum, guar gum, tamarind gum, cellulose sulfate of dialkyldimethylammonium, xanthan gum, magnesium aluminum silicate, bentonite, hectorite, magnesium aluminum silicate (Veegum), synthetic hectorite (Laponite), silicon anhydride, synthetic polymers of taurate series, synthetic polymers of acrylate series, etc.

[0120] Examples of the film-forming agent include anionic film-forming agents (e.g., (meth)acrylic acid / (meth)acrylate copolymer, methyl vinyl ether / maleic anhydride polymer, etc.), cationic film-forming agents (e.g., cationized cellulose, dimethyldiallylammonium chloride polymer, dimethyldiallylammonium chloride / acrylamide copolymer, etc.), and nonionic film-forming agents (e.g., polyvinyl alcohol, polyvinylpyrrolidone, polyvinyl acetate, polyacrylate copolymer, (meth)acrylamide, high molecular weight organosilicon, silicone resin, trimethylsilyloxy silicate, etc.).

[0121] Examples of the ultraviolet absorber include benzoic acid-based ultraviolet absorbers (e.g., p-aminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglyceride, N,N-dipropoxyethyl p-aminobenzoate, N,N-diethoxyethyl p-aminobenzoate, N,N-dimethyl ethyl p-aminobenzoate, N,N-dimethyl butyl p-aminobenzoate, N,N-dimethyl ethyl p-aminobenzoate, etc.); anthranilic acid-based ultraviolet absorbers (e.g., N-acetyl anthranilic acid menthyl ester, etc.); salicylic acid-based ultraviolet absorbers (e.g., amyl salicylate, menthyl salicylate, menthyl homosalicyclate, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropylphenyl salicylate, etc.); cinnamic acid-based ultraviolet absorbers (e.g., octyl methoxycinnamate, ethyl 4-isopropylcinnamate, methyl 2,5-diisopropylcinnamate, ethyl 2,4-diisopropylcinnamate, methyl 2,4-diisopropylcinnamate, propyl p-methoxycinnamate, isopropyl p-methoxycinnamate, isoamyl p-methoxycinnamate, octyl p-methoxycinnamate (2-ethylhexyl p-methoxycinnamate), 2-ethoxyethyl p-methoxycinnamate, cyclohexyl p-methoxycinnamate, ethyl α-cyano-β-phenylcinnamate, 2-ethylhexyl α-cyano-β-phenylcinnamate, mono-2-ethylhexanoyl-dip-methoxycinnamoyl glycerol, etc.); benzophenone-based ultraviolet absorbers (e.g., 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4-phenylbenzophenone, 2-ethylhexyl-4'-phenyl-benzophenone-2-carboxylate, 2-hydroxy-4-n-octyloxybenzophenone, 4-hydroxy-3-carboxybenzophenone, etc.); 3-(4'-methylbenzylidene)-d,l-camphor, 3-benzylidene-d,l-camphor; 2-phenyl-5-methylbenzoxazole; 2,2'-hydroxy-5-methylphenylbenzotriazole; 2-(2'-hydroxy-5'-tert-octylphenyl)benzotriazole; 2-(2'-hydroxy-5'-methylphenyl)benzotriazole; dibenzalazine; dianisoylmethane; 4-methoxy-4'-tert-butyldibenzoylmethane; 5-(3,3-dimethyl-2-norbornenyl)-3-pentan-2-one, dimorpholinopyridazinone; 2-ethylhexyl-2-cyano-3,3-diphenylacrylate; 2,4-bis-{[4-(2-ethylhexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-(1,3,5)-triazine, etc.

[0122] Examples of metal ion sequestering agents include: 1-hydroxyethane-1,1-diphosphonic acid, tetrasodium 1-hydroxyethane-1,1-diphosphonate, disodium ethylenediaminetetraacetate, trisodium ethylenediaminetetraacetate, tetrasodium ethylenediaminetetraacetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, ethylenediaminetetraacetic acid, trisodium ethylenediamine-N,N'-bis(2-hydroxyethyl)glycine, etc.

[0123] Examples of amino acids include: neutral amino acids (e.g., threonine, cysteine, etc.); basic amino acids (e.g., hydroxylysine, etc.). In addition, examples of amino acid derivatives include: sodium acylsarcosine (sodium lauroylsarcosine), acylglutamate salts, sodium acyl-β-alanine, glutathione, pyrrolidonecarboxylic acid, etc.

[0124] Examples of organic amines include: monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-methyl-1-propanol, etc.

[0125] Examples of polymer emulsions include: acrylic resin emulsion, polyethyl acrylate emulsion, acrylic resin solution, polyalkyl acrylate emulsion, polyvinyl acetate resin emulsion, natural rubber latex, etc.

[0126] Examples of pH adjusters include: buffers such as lactic acid - sodium lactate, citric acid - sodium citrate, succinic acid - sodium succinate, etc.

[0127] Examples of vitamins include: vitamins A, B1, B2, B6, C, E and their derivatives, pantothenic acid and its derivatives, biotin, etc.

[0128] Examples of antioxidants include: tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallate esters, etc.

[0129] Examples of antioxidant aids include: phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate (ester), phytic acid, ethylenediaminetetraacetic acid, etc.

[0130] As other blendable components, for example, the following can be cited: preservatives (ethyl p-hydroxybenzoate, butyl p-hydroxybenzoate, chlorphenesin, phenoxyethanol, etc.); anti-inflammatory agents (for example, glycyrrhic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.); whitening agents (for example, placenta extract, saxifrage extract, arbutin, etc.); various extracts (for example, phellodendron bark, coptis root, purple gromwell root, peony root, swertia herb, birch, sage, loquat, carrot, aloe, mallow, iris, grape, coix seed, towel gourd, lily, saffron, chuanxiong rhizome, ginger, hypericum erectum, ononis spinosa, garlic, chili pepper, tangerine peel, angelica root, seaweed, etc.), activators (for example, royal jelly, phytochrome, cholesterol derivatives, etc.); blood circulation promoters (for example, nonivamide, benzyl nicotinate, β-butoxyethyl nicotinate, capsaicin, gingerone, cantharidin tincture, ichthammol, tannic acid, α-borneol, tocopheryl nicotinate, inositol hexanicotinate, cyclandelate, cinnarizine, tolazoline, acetylcholine, verapamil, cepharanthine, γ-oryzanol, etc.); anti-seborrheic agents (for example, sulfur, dimethylthianthrene, etc.); anti-inflammatory drugs (for example, tranexamic acid, thiotaurine, hypotaurine, etc.), etc.

[0131] Moreover, the composition of the present disclosure may also appropriately contain: caffeine, tannins, verapamil, tranexamic acid and its derivatives, various crude drug extracts such as licorice, Japanese quince, pyrola japonica, etc., tocopheryl acetate, glycyrrhizin, glycyrrhetic acid and its derivatives or salts thereof and other medicaments, vitamin C, magnesium ascorbyl phosphate, ascorbyl glucoside, arbutin, kojic acid and other whitening agents, arginine, lysine and other amino acids and their derivatives.

[0132] The pH of the aqueous phase is preferably 5 or more, more preferably 5.5 or more. If the pH is less than 5, the emulsification after shaking becomes insufficient. The pH of the aqueous phase is preferably 8 or less, more preferably 7.5 or less. If the pH exceeds 8, the irritation to the skin becomes stronger.

[0133] [Appearance]

[0134] The interface between the aqueous phase and the oil phase is preferably distinct. It is preferred that neither the aqueous phase nor the oil phase is turbid, and more preferably they have transparency.

[0135] [Usability]

[0136] The method of using the oil-water separation composition of the present disclosure will be described. The oil-water separation composition can be suitably used for, for example, cosmetics, detergents, etc.

[0137] As a detergent, it can be suitably applied to, for example, cosmetics removal detergents, hand sanitizers, body washes, hair detergents, kitchen detergents, etc. As a cosmetics detergent, it can be a detergent for removing waterproof cosmetics (makeup). The detergent composition can be made into a detergent that is washed off with water or a type that is not washed off with water (no-rinse type). In the case of the no-rinse type, for example, the detergent composition can be applied, dropped, etc. onto the object to be washed (e.g., skin), wiped off with a fibrous body such as a pad, or the object to be washed (e.g., skin) can be rubbed with a fibrous body immersed in the detergent composition.

[0138] The oil-water separation composition of the present disclosure preferably comes out of the container after vibrating the container to form a temporary emulsified state (including a state similar to emulsification) before coming out of the container. The number of oscillations of the container for forming the emulsified state is preferably, for example, 20 times or less, more preferably 15 times or less, and still more preferably 10 times or less. The temporary emulsified state formed by the oscillation operation preferably lasts for a certain period of time. For example, the temporary emulsified state preferably lasts for 10 seconds or more, preferably 15 seconds or more, and preferably 20 seconds or more. In addition, the emulsified state preferably returns to the original oil-water separation state by standing still. In the case of returning from the temporary emulsified state to the oil-water two-layer separation state by standing still, the oil-water separation composition preferably does not become cloudy and has transparency. In addition, the interface between the oil phase and the water phase is preferably distinct.

[0139] According to the oil-water separation composition of the present disclosure, it is possible to suppress the state where droplets adhere to the inner wall surface of the container above the liquid level for a long time. That is, even if droplets are formed on the inner wall surface of the container in the oil-water separation composition of the present disclosure, the droplets can naturally disappear in a short time. Thereby, the appearance of the container filled with the oil-water separation composition can be kept good.

[0140] [Manufacturing method]

[0141] The manufacturing method of the oil-water separation composition of the present disclosure will be described. The oil-water separation composition of the present disclosure can be produced by a generally known method without passing through a specific method. For example, the oil-water separation composition can be produced by mixing the above-mentioned respective components. The oil-water separation composition can be produced by separately preparing the water phase and the oil phase and then mixing the water phase and the oil phase. In this case, the polyol derivative can be added to the oil phase. In addition, it can be produced without separately preparing the oil phase and the water phase, and all the components can be mixed together.

[0142] In the oil-water separation composition of the present disclosure, sometimes the phase structure, etc. is difficult to directly specify by the composition or is completely impractical. In such a case, the oil-water separation composition of the present disclosure should be allowed to be specified by its manufacturing method.

[0143] A description is given of the article according to the second embodiment.

[0144] The article of the present disclosure includes the oil-water separation composition according to the first embodiment and a container containing the oil-water separation composition. At least a part of the container has transparency such that the inside can be recognized. In particular, the container preferably has transparency such that the separation state and the emulsified state of the oil-water separation composition can be visually confirmed from the outside. The container may be colorless or colored.

[0145] The material of the container may be resin, glass, etc. In order to facilitate the shaking treatment by hand, the material of the container is preferably a lightweight resin. The container preferably contains a resin having a polyester such as polyethylene terephthalate (PET) as a basic skeleton.

[0146] The container preferably has a structure that does not leak even when shaken in a state where the oil-water separation composition is contained. The container preferably includes: a main body that houses the oil-water separation composition and has an opening through which the oil-water separation composition can be taken out; and a lid or cap that can open and close the opening.

[0147] According to the article of the present disclosure, the oil-water separation composition can be taken out of the container after confirming the emulsified state of the oil-water separation composition according to the first embodiment. Thereby, the oil-water separation composition can be used in a more suitable state. In addition, by using a resin container, the oil-water separation composition can be easily emulsified by an oscillating operation using the hand.

[0148] In the article of the present disclosure, the adhesion of droplets to the inner surface of the container above the oil-water separation composition is suppressed. The interface between the oil phase and the water phase in the separated state of the oil-water separation composition can be made distinct.

[0149] Examples

[0150] The oil-water separation composition of the present disclosure will be described below by way of examples. However, the oil-water separation composition of the present disclosure is not limited to the following examples. In addition, in the following examples, examples in which the oil-water separation composition of each test example is applied to a cosmetic detergent are described, but the composition of the present disclosure is not limited to a cosmetic detergent. The unit of the content rate of each component shown in each table is mass%.

[0151] [Test Examples 1 to 3]

[0152] An oil-water two-layer separation type detergent composition was prepared. Table 1 shows the composition of the detergent compositions prepared in each test example and their evaluations. After separately preparing the oil phase and the water phase, the two were mixed to prepare an oil-water two-layer type detergent composition. The oil phase and the water phase shown in the following table represent the phases in which each component was incorporated during the preparation of the detergent composition. Therefore, during the shaking treatment and / or standing, there is a possibility that the components incorporated in the oil phase move to the water phase, and / or the components incorporated in the water phase move to the oil phase.

[0153] The prepared oil-water separation type detergent composition was added to a transparent sample tube made of polyethylene terephthalate (PET). In a state where it had been left standing for 3 hours, the detergent composition in the sample tube separated into two layers, with the upper layer being the oil phase and the lower layer being the water phase. In a state where the oil phase and the water phase were separated into two layers, the container was shaken vertically by hand 8 times to emulsify the oil phase and the water phase. After emulsification, it was left for 3 hours to allow the oil phase and the water phase to separate again. Before and after emulsification, the attachment state of the droplets on the inner wall surface of the upper part of the container was visually confirmed and evaluated according to the following criteria. Before and after emulsification, the interface and the state of each phase were visually confirmed and evaluated according to the following criteria. In Figures 1 to 3 photographs of the sample tubes showing the state examples of each evaluation for the remaining evaluation of the droplets are shown. In Figure 4 and Figure 5 photographs of the sample tubes showing the state examples of each evaluation for the interface evaluation between the oil phase and the liquid phase are shown. In addition, the duration of the emulsified state was evaluated according to the following criteria.

[0154] [Droplet attachment]

[0155] A: No droplets remain on the inner wall surface of the container (refer to Figure 1 );

[0156] B: Slightly droplets remain on the inner wall surface of the container (refer to Figure 2 );

[0157] C: Large droplets remain on the inner wall surface of the container (refer to Figure 3 ).

[0158] [State of the interface and presence or absence of turbidity in each layer]

[0159] A: The interface between the oil phase and the liquid phase is distinct (refer to Figure 4 ), and the oil phase and the water phase are not turbid;

[0160] B: The interface between the oil phase and the liquid phase is slightly indistinct, or the oil phase or the water phase has a little turbidity;

[0161] C: The interface between the oil phase and the liquid phase is significantly indistinct (refer to Figure 5), or the oil phase or the aqueous phase has obvious turbidity.

[0162] [Emulsification time]

[0163] A: The duration of the emulsified state is more than 10 seconds;

[0164] B: The duration of the emulsified state is less than 10 seconds.

[0165] In Figure 6 photographs of the oil-water two-layer detergent compositions in Test Examples 1 to 3 are shown. Figure 6 The samples shown are detergent compositions that have been allowed to stand for 3 hours after shaking treatment and are in a state of being separated into two layers.

[0166] In Test Example 1 without addition of a polyol derivative, it was confirmed that the droplets were dispersed and continuously adhered to the entire inner wall surface of the container. On the other hand, in Test Examples 2 and 3 with addition of a polyol derivative, no droplets adhered to the inner wall surface were confirmed. Although formation of droplets was confirmed on the inner wall surface of the container immediately after shaking treatment, the droplets disappeared naturally immediately after standing for several seconds. From this, it can be considered that the polyol derivative has the effect of preventing adhesion of droplets in the oil-water separation composition.

[0167] Furthermore, after emulsification in Test Example 1, the interface between the oil phase and the aqueous phase became unclear. On the other hand, in Test Examples 2 and 3, the interface between the oil phase and the aqueous phase was also clear before emulsification, and no turbidity such as cloudiness was confirmed in each phase. The emulsified state formed by shaking treatment could also last for a time sufficient for use. Even in the state of re-separation from the emulsified state, the interface was clear, and each phase had no turbidity and could return to the same state as before the shaking treatment. From this, it can be considered that the polyol derivative also has the effect of making the interface clear after the temporary emulsified state of the oil-water separation composition.

[0168] [Table 1]

[0169]

[0170] [Test Examples 4 to 10]

[0171] In Test Examples 4 to 10, it was confirmed that compounds other than 2-ethylhexyl glycerol have a droplet adhesion inhibitory effect and an interface clarification effect. The evaluation method was the same as that in Test Examples 1 to 3. The evaluation criteria for droplet adhesion were the same as the above evaluation criteria. For the evaluation criteria of the clarity of the interface, Evaluation A or C was used instead of Evaluation B, and other than that, it was the same as the above evaluation criteria. The composition and evaluation are shown in Table 2. In Figures 7 to 9 photographs of the oil-water two-layer detergent compositions after shaking in Test Examples 1 and 3 to 10 are shown.

[0172] In Test Example 4 using hexyl glycerin, similar to Test Examples 2 and 3, attachment of droplets to the inner wall surface of the container can be prevented, and the interface between the oil phase and the water phase can be made distinct. From this, it can be considered that the glycerol derivative shown in Chemical Formula 3 above has a droplet attachment inhibitory effect and an interface clarification effect.

[0173] In Test Examples 5 and 6 using propylene glycol laurate and propylene glycol isostearate, a droplet attachment inhibitory effect and an interface clarification effect were also confirmed. From this, it can be considered that propylene glycol monofatty acid esters as shown in Chemical Formula 4 above also have a droplet attachment inhibitory effect and an interface clarification effect.

[0174] [Table 2]

[0175]

[0176] [Test Examples 11 to 16]

[0177] In Test Examples 11 to 16, the content rate of the polyol derivative was changed. The evaluation method was the same as in Test Examples 1 to 3. The evaluation criteria for droplet attachment were the same as the above evaluation criteria. For the evaluation criteria of the distinctness of the interface, Evaluation B was not used, but Evaluation A or C was used, and other than that, it was the same as the above evaluation criteria. The composition and evaluation are shown in Table 3. In Figure 10 and 11 photos of the oil-water two-layer detergent composition after shaking in Test Examples 1 to 3 and 11 to 15 are shown.

[0178] In Test Examples 11 and 12 with a low addition rate of the polyol derivative, the remaining droplets were confirmed on the inner wall of the container, and the indistinctness of the interface between the oil phase and the water phase was also confirmed. On the other hand, in Test Examples 2 to 3 and 13 to 16 with an addition of 0.1% by mass or more of the polyol derivative, attachment of droplets to the inner wall of the container was not confirmed. However, in Test Examples 15 and 16 with an addition of 2% by mass or more of the polyol derivative, separation into three layers was confirmed during re-separation.

[0179] From this, it can be considered that the content rate of the polyol derivative is preferably 0.06% by mass or more, more preferably 0.07% by mass or more, and further preferably 0.08% by mass or more with respect to the mass of the composition. In addition, it can be considered that the content rate of the polyol derivative is preferably 1.8% by mass or less, more preferably 1.5% by mass or less, and further preferably 1.2% by mass or less with respect to the mass of the composition.

[0180] [Table 3]

[0181]

[0182] [Test Examples 17 to 20]

[0183] In Test Examples 17 to 18, the same tests as the above test examples were conducted on the composition without the addition of zwitterionic surfactant. In Test Examples 19 to 20, the same tests as the above test examples were conducted on the composition without the addition of inorganic salt. The evaluation method and evaluation criteria were the same as those in Test Examples 4 to 10. The composition and evaluation are shown in Table 4.

[0184] Comparing Test Example 1 with Test Example 17, if a zwitterionic surfactant is added, the droplets are likely to adhere to the inner wall surface of the container. In addition, the interface between the oil phase and the water phase is also likely to become turbid. However, as shown in Test Example 18, if a glycerol derivative is added, the adhesion of the droplets is improved compared to the composition of Test Example 17 without the addition of zwitterionic surfactant. Thus, it was clarified that the effect of suppressing droplet adhesion is brought about by the polyol derivative.

[0185] Comparing Test Example 1 with Test Example 19, if an inorganic salt is added, the droplets are likely to adhere to the inner wall surface of the container. However, as shown in Test Example 20, if a glycerol derivative is added, the adhesion of the droplets and the clarity of the interface are improved compared to the composition of Test Example 19 without the addition of inorganic salt. Thus, it was clarified that the effect of suppressing droplet adhesion is brought about by the polyol derivative.

[0186] [Table 4]

[0187]

[0188] [Test Examples 21 to 24]

[0189] In Test Examples 21 to 24, in order to improve the detergency of the dye, decyltetradecyldimethylamine oxide as a trialkylamine oxide was added to the composition of Test Example 2. In Test Examples 21 and 22, decyltetradecyldimethylamine oxide was added to the oil phase, and in Test Examples 23 and 24, decyltetradecyldimethylamine oxide was added to the water phase. In addition, in Test Example 24, lauryldimethylaminoacetate betaine as a zwitterionic surfactant was added to the oil phase. The composition of the washing composition and its evaluation are shown in Table 4. The evaluation criteria were the same as those in Test Examples 1 to 3.

[0190] In Test Example 21 without the blending of polyol derivative, the adhesion of the droplets to the inner wall of the container was confirmed by the same operation as in Test Example 1. However, the adhesion of the droplets was not confirmed in Test Examples 22 to 24 with the blending of polyol derivative. Thus, it can be seen that the droplet suppression effect of the polyol derivative does not change even if a trialkylamine oxide is blended.

[0191] In addition, in Test Example 21, the water phase became turbid after the emulsification treatment, but no turbidity occurred in Test Examples 22 to 23. It is considered that the turbidity occurred in Test Example 21 because there was no polyol derivative or the amount of ethanol was insufficient.

[0192] [Table 5]

[0193]

[0194] The oil-water separation composition and article of the present invention have been described based on the above embodiments and examples, but are not limited to the above embodiments and examples. Within the scope of the present invention and based on the basic technical idea of the present invention, various deformations, changes and improvements can be included for each disclosed element (including the elements described in the claims, the specification and the drawings). In addition, within the scope of the claims of the present invention, various combinations / substitutions or selections of the disclosed elements can be made.

[0195] Further subjects, objects and modes (including modified modes) of the present invention are also made clear by all the disclosures of the present invention including the claims.

[0196] Regarding the numerical ranges described in this specification, even if not specifically described, any numerical value or range included within that range should be construed as the numerical value or range specifically described in this specification.

[0197] Part or all of the above embodiments can also be described as follows in the attached notes, but are not limited to the following descriptions. Each attached note can also be combined with each claim described in the claims.

[0198] [Appendix 1]

[0199] Method of using the detergent composition of the present disclosure applied to cosmetics.

[0200] [Appendix 2]

[0201] Method of using the detergent composition of the present disclosure applied to skin washing.

[0202] [Appendix 3]

[0203] Method of using the detergent composition of the present disclosure used for removing cosmetics.

[0204] [Appendix 4]

[0205] Method of using the detergent composition of the present disclosure used as a wash-free type.

[0206] [Appendix 5]

[0207] Method of using the detergent composition of the present disclosure used after shaking the detergent composition to form an emulsified state.

[0208] [Appendix 6]

[0209] Use of a detergent composition containing a trialkylamine oxide, and a method for using the detergent composition of the present disclosure for removing dyes from the skin.

[0210] Industrial applicability

[0211] The oil-water separation composition of the present disclosure can be applied to cosmetics, detergents, etc. applied to the skin. In particular, the oil-water separation composition of the present disclosure can be suitably used for washing to remove cosmetics on the skin.

Claims

1. A skin detergent comprising an oil-water two-layer separation composition and a container containing the oil-water two-layer separation composition, at least a part of the container has transparency capable of recognizing the interior, the oil-water two-layer separation composition has an aqueous phase and an oil phase separated from the aqueous phase in a static state, the oil-water two-layer separation composition contains one or more polyol derivatives selected from ethylhexylglycerin, hexylglycerin, propylene glycol laurate, and propylene glycol isostearate in an amount of 0.1% by mass to 1% by mass based on the mass of the composition, 0.01% by mass to 0.1% by mass of an alkyl betaine type surfactant, 0.1% by mass to 5% by mass of a salt, and 0.01% by mass to 2% by mass of a trialkylamine oxide, the content of the oil phase is 20% by mass to 80% by mass based on the mass of the composition, the content of the aqueous phase is 20% by mass to 80% by mass based on the mass of the composition.

2. The skin detergent according to claim 1, wherein the user uses it in a state where the composition forms a temporary emulsion.

3. The skin detergent according to claim 1 or 2, wherein the composition is a cosmetic.

4. The skin detergent according to claim 1 or 2, wherein the composition is a detergent for cosmetics.

5. The skin detergent according to claim 1 or 2, wherein the composition is a non-rinse type.

6. The skin detergent according to claim 1 or 2, wherein the container contains polyester.

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