JP2018111667A - Oil-in-water type emulsion composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil-in-water type emulsified composition that even if the internal phase is not necessarily high, can provide a pleasant feeling of use due to a feeling of inversion and is excellent also in cleansing power.SOLUTION: The oil-in-water type emulsified composition comprises an oily component, an aqueous component and a surfactant in which the oily component is at least 40 mass% of the total composition, and the oil component comprises 0.2-4.0 mass% of the total composition of a solid fat with a meting point of 45-75°C. In a test in which 0.3 g of the oil-in-water type emulsified composition is applied to the forearm and circulated with a major axis of 10 cm and a minor axis of 5 cm with the second, third, and fourth fingers at a weight of 0.1-8.0 N, the emulsifier begins to change like an oil after 1-20 circulations.SELECTED DRAWING: None

Description

  The present invention relates to an oil-in-water emulsion composition suitable as a skin cleansing cosmetic.

Skin cleansing cosmetics (cleansing cosmetics) are cosmetics used for the purpose of removing cosmetics that are difficult to remove by normal aqueous cleaning such as lip color and mascara and sebum stains.
As the dosage form of the cosmetic for cleaning the skin, there are many liquids that are easy to use, and usually used by putting it on the skin and blending it with makeup stains by finger massage. Of the liquids, the oil-in-water emulsifier type is popular because the oil phase and the water phase are reversed by a blending operation, giving a comfortable feeling that the oil melts on the skin. In order to easily cause such phase reversal, conventionally, an oil-in-water emulsifier type in a skin cleanser has been designed to have a high internal phase containing about 70 to 80% by mass of an oil component (Patent Document 1). . The high internal phase oil-in-water emulsifier type is also preferred because it has a high cleansing power because it contains a high amount of oil components.

JP 2000-15085 A

The high internal phase oil-in-water emulsifier type has a problem that the production cost is high while a comfortable reversal feeling and a high cleansing force can be obtained as described above because the oil component is highly blended.
In view of such a situation, the present invention provides an oil-in-water emulsion composition that provides a comfortable feeling of use due to a reversal feeling and is excellent in cleansing power even if not necessarily a high internal phase. Let it be an issue.

  As a result of intensive studies, the present inventors have conceived that, in an oil-in-water emulsion composition, a desired reversal feeling can be obtained by setting a predetermined amount of an oil component and a predetermined amount of solid fat. The present invention has been completed.

That is, the present invention is as follows.
[1] contains an oily component, an aqueous component, and a surfactant,
The oil component is 40% by mass or more of the whole composition;
The oil component is an oil-in-water emulsion composition containing 0.2 to 4.0% by mass of solid fat having a melting point of 45 to 75 ° C.
The inner side of the forearm coated with 0.3 g of the oil-in-water emulsion composition is rotated by a second finger, a third finger, and a fourth finger with a load of 0.1 to 8.0 N and a major axis of 10 cm and a minor axis of 5 cm. In the test, the oil-in-water emulsified composition in which the emulsifier type starts to change into an oily state 1 to 20 times.
[2] The oil-in-water emulsion composition according to [1], wherein the solid fat is selected from waxes and fatty acid esters.
[3] The oil-in-water emulsion composition according to [1] or [2], wherein the aqueous component contains a fatty acid having 16 to 22 carbon atoms.
[4] The oil-in-water emulsion composition according to any one of [1] to [3], wherein the aqueous component contains an alcohol having 16 to 22 carbon atoms.
[5] The oil-in-water emulsion composition according to any one of [1] to [4], which is a cosmetic.
[6] The cosmetic according to [5], which is for skin cleaning.

According to the present invention, there is provided an oil-in-water emulsion composition that can provide a pleasant feeling of use due to a reversal feeling, and is excellent in cleansing power due to being easily reversed, even if not necessarily having a high internal phase. Such a composition is suitable as a skin cleansing cosmetic.
In the present specification, “inversion feeling” refers to a feeling when the oil phase of an oil-in-water emulsifier type and an aqueous phase are inverted to change to an oily state, and “comfortable feeling of use” It refers to the joy of the change, the feeling of melting, and the feeling of being usable with a light feel without friction.

The oil-in-water emulsion composition of the present invention contains an oily component, an aqueous component, and a surfactant.
The oil component is 40% by mass or more of the whole composition, preferably 50% by mass or more, and more preferably 60% by mass. In order to facilitate reversal of the oil-in-water emulsion composition, it is usual to increase the oil component, for example, 70% by mass or more to obtain a high internal phase, but the oil-in-water emulsion composition of the present invention is not necessarily A sense of inversion can be easily obtained without using a phase.

In the present invention, the oil component is usually an oil agent, but is not limited to this, and also includes components (excluding surfactants) that are phase-separated from water after being suspended in water at 25 to 65 ° C. and allowed to stand for 1 hour. It's okay.
Examples of the oil agent contained in the oil component include silicone oil, synthetic oil, natural oil, hydrocarbon oil and the like.

  Examples of the silicone oil include dimethylpolysiloxane (dimethicone), cyclopentasiloxane, decamethylcyclopentasiloxane, caprylyl methicone, (dimethicone / vinyl dimethicone) crosspolymer, and (dimethicone / phenylvinyl dimethicone) crosspolymer.

  Synthetic oils include synthetic ester oils such as isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, lactic acid Cetyl, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, ethylene glycol di-2-ethylhexylate, dipentaerythritol fatty acid ester, monoisostearic acid N-alkyl glycol, dicaprate neopentyl glycol, diisostearyl malate Glycerin di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexylate, trimethylolpropria triisostearate , Pentane erythritol tetra-2-ethylhexylate, glyceryl tri-2-ethylhexanoate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glyceryl trimyristate, tri-2-heptyl Undecanoic acid glyceride, castor oil fatty acid methyl ester, oleic acid oil, acetoglyceride, 2-heptyl undecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di-2-heptyl adipate Undecyl, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diiso sebacate Propyl, 2-ethylhexyl succinate, ethyl acetate, butyl acetate, amyl acetate, triethyl citrate, octyl methoxycinnamate and the like.

Natural oils such as avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, southern oil, castor oil, flaxseed oil, safflower Oil, cottonseed oil, eno oil, soybean oil, peanut oil,
Examples include tea oil, kaya oil, rice bran oil, cinnagiri oil, Japanese kiri oil, jojoba oil, germ oil, triglycerin, trioctanoic acid glycerin, triisopalmitic acid glycerin and the like.
Examples of the hydrocarbon oil include isododecane, isohexadecane, squalane, hydrogenated poly (C6-12 olefin), hydrogenated polyisobutene, and the like.

Furthermore, in the present invention, the oil component includes solid fat having a melting point of 45 to 75 ° C. Content of this solid fat is 0.2-4.0 mass% of the whole composition, Preferably it is 0.2-2.0 mass%, More preferably, it is 0.2-1.0 mass%. . By containing solid fat in the above range, a feeling of inversion can be easily obtained, and a comfortable feeling of use can be imparted. Moreover, since the oil-in-water type is easy to reverse, it quickly adapts to the makeup stains, so the cleansing power is excellent.
Here, the solid fat includes semi-solid fat. The solid means that there is no fluidity at 25 ° C., and the semi-solid means that it hardly deforms in an environment where there is no stress at 1 ° C. and 20 ° C., but some stress (about 10 to 100 g / cm ² ) This means something that deforms.
The solid fat may be naturally derived or synthetic, and waxes and fatty acid esters are preferred. In general, polyoxyethylene or the like is not chemically added or modified.
As such solid fat, those selected from waxes and fatty acid esters are preferable, and specifically, ceresin, tribehen, stearyl stearate, cetyl palmitate and the like are more preferable.
In addition, these solid fat can be used individually or in combination of 2 or more types.

  In the present invention, the aqueous component may be any component (excluding a surfactant) that is soluble in water at 25 to 65 ° C. in addition to water.

The aqueous component preferably contains a fatty acid having 16 to 22 carbon atoms (so-called higher fatty acid). Specific examples include stearic acid, oleic acid, eicosanoic acid, behenic acid, palmitic acid and the like. In the present invention, the higher fatty acid may contain an amount usually blended in the oil-in-water emulsion composition.
The aqueous component preferably contains an alcohol having 16 to 22 carbon atoms (so-called higher alcohol). Such higher alcohols are preferably linear, and specifically include cetyl alcohol, stearyl alcohol, behenyl alcohol, batyl alcohol and the like. In the present invention, the higher alcohol may contain an amount usually blended in the oil-in-water emulsion composition.

  In the present invention, the higher fatty acid and the higher alcohol preferably form an α gel in the outer aqueous phase together with the hydrophilic surfactant. An α-gel is an aggregate composed of lamellar bilayers formed by higher alcohols, higher fatty acids, and hydrophilic surfactants (Soji Fukushima, “Physical Chemistry of Cetyl Alcohol”, Fragrance Journal) Company Publishing, 79-83, 1992). Since the packing of the alkyl chain is higher than that of the lamella liquid crystal, the blocking property is high and the water retention is excellent, so that it is widely used for stabilizing the oil-in-water type.

The surfactant that is essentially contained in the oil-in-water emulsion composition of the present invention is not particularly limited, and an anionic surfactant, a cationic surfactant, an amphoteric surfactant, a nonionic surfactant, or the like is used. Can do.
Anionic surfactants include, for example, fatty acid soaps (eg, sodium laurate, sodium palmitate, etc.); higher alkyl sulfates (eg, sodium lauryl sulfate, potassium lauryl sulfate, etc.); alkyl ether sulfates (eg, POE lauryl sulfate triethanolamine, POE sodium lauryl sulfate, etc.); N-acyl sarcosine acid (eg, sodium lauroyl sarcosine, etc.); higher fatty acid amide sulfonates (eg, N-myristoyl-N-methyl taurine sodium, coconut oil fatty acid) Methyl tauride sodium, lauryl methyl tauride sodium, etc.); Phosphate ester salts (POE oleyl ether sodium phosphate, POE stearyl ether phosphate, etc.); Sodium 2-ethylhexyl sulfosuccinate, sodium monolauroyl monoethanolamide polyoxyethylene sodium sulfosuccinate, sodium lauryl polypropylene glycol sulfosuccinate, etc .; alkylbenzene sulfonates (for example, sodium lineardodecylbenzenesulfonate, triethanolamine lineardodecylbenzenesulfonate) Higher fatty acid ester sulfate (for example, hydrogenated coconut oil fatty acid sodium glyceryl sulfate, etc.); N-acyl glutamate (for example, monosodium N-lauroyl glutamate, disodium N-stearoyl glutamate, N-myristoyl-L-mono-sodium glutamate, etc.); sulfated oil (eg funnel oil); POE alkyl -Tercarboxylic acid; POE alkyl allyl ether carboxylate; α-olefin sulfonate; higher fatty acid ester sulfonate; secondary alcohol sulfate ester; higher fatty acid alkylolamide sulfate salt; sodium lauroyl monoethanolamide succinate; N -Palmitoyl aspartate ditriethanolamine; sodium caseinate and the like.

Examples of the cationic surfactant include alkyltrimethylammonium salts (eg, stearyltrimethylammonium chloride, lauryltrimethylammonium chloride, etc.); alkylpyridinium salts (eg, cetylpyridinium chloride, etc.); distearyldimethylammonium dialkyldimethylammonium chloride; Poly (N, N'-dimethyl-3 chloride)
Alkyl quaternary ammonium salt; alkyl dimethyl benzyl ammonium salt; alkyl isoquinolinium salt; dialkyl morpholinium salt; POE alkyl amine; alkyl amine salt; polyamine fatty acid derivative; Benzalkonium chloride; benzethonium chloride and the like.

  Examples of amphoteric surfactants include imidazoline-based amphoteric surfactants (for example, 2-undecyl-N, N, N- (hydroxyethylcarboxymethyl) -2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide). Side-1-carboxyethyloxy disodium salt, etc.); betaine surfactants (for example, 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauryldimethylaminoacetic acid betaine, alkylbetaine, amide betaine) , Sulfobetaine, etc.).

Nonionic surfactants include polyether-modified silicones (eg, polyethylene glycol-10 dimethicone, polyethylene glycol-12 dimethicone, etc.); polyglycerin-modified silicones (eg, polyglyceryl-3 disiloxane dimethicone, polyglyceryl-3 poly). Dimethylsiloxyethyl dimethicone, (polyglyceryl-3 / lauryl polydimethylsiloxyethyl dimethicone) crosspolymer, etc.); sorbitan fatty acid esters (for example, sorbitan monooleate, sorbitan monostearate, sorbitan monoisostearate, sorbitan monolaurate, Sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, dipentan-2-ethylhexylate Glycerin fatty acids (for example, mono-cotton oil fatty acid glycerin, mono-erucic acid glycerin, sesquioleic acid glycerin, monostearic acid glycerin, α, α'-oleic acid pyroglutamic acid glycerin) Propylene glycol fatty acid esters (eg, propylene glycol monostearate); POE castor oil / hardened castor oil derivatives (POE castor oil, POE hardened castor oil, etc.); glycerin alkyl ether, etc. Non-hydrophilic nonionic surfactants. Also, polyglycerol fatty acid esters (for example, polyglyceryl monooleate, polyglyceryl monostearate, etc.); POE sorbitan fatty acid esters (for example, POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan tetraoleate, etc.); POE Sorbit fatty acid esters (eg, POE sorbite monolaurate, POE sorbite monooleate, POE sorbite pentaoleate, POE sorbite monostearate, etc.); POE glycerin fatty acid esters (eg, POE glycerin monostearate, POE glycerin monostearate) POE monooleate such as isostearate and POE glycerin triisostearate); POE fatty acid esters (eg POE distearate) POE monodiolates, ethylene glycol distearate, etc.); POE alkyl ethers (for example, POE lauryl ether, POE oleyl ether, POE stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE cholestanol ether, etc.); POE Alkylphenyl ethers (for example, POE nonylphenyl ether); pluronic types (for example, pluronic etc.); POE • POP alkyl ethers (for example, POE • POP cetyl ether, POE • POP-2-decyltetradecyl ether, POE / POP monobutyl ether, POE / POP hydrogenated lanolin, POE / POP glycerin ether, etc.); Tetra POE / tetra-POP ethylenediamine condensates (for example, POE castor oil hydrogenated castor oil derivatives (for example, POE castor oil, POE hydrogenated castor oil, POE hydrogenated castor oil monoisostearate, POE hydrogenated castor oil triisostearate, POE hydrogenated castor oil monopyroglutamic acid Monoisostearic acid diester, POE hydrogenated castor oil maleic acid, etc.); POE beeswax / lanolin derivatives (eg, POE sorbite beeswax etc.); alkanolamides (eg, coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.) POE propylene glycol fatty acid ester; POE alkylamine; POE fatty acid amide; sucrose fatty acid ester; alkyl glucoside; alkyl ethoxydimethylamine oxide; trioleyl phosphate, etc. Hydrophilic nonionic surfactant may also be mentioned.

  Among these surfactants, those having no fluidity (solid) at 25 ° C. and having an HLB of 8 or more are preferable from the viewpoint of the stability of the composition. Specific examples include POE fatty acid esters such as PEG-150 stearate, sugar fatty acid esters, and polyglyceryl-3 methyl glucose distearate.

  The total content of the surfactant only needs to be within a range that can form a stable emulsifier type. For example, the total content of the surfactant is 1 to 8% by mass, preferably 1 to 5% by mass, more preferably 2 to 4%. % By mass.

In the composition of the present invention, inversion between the oil-in-water emulsifier type oil phase and the aqueous phase is likely to occur during use, and it is easy to obtain a feel (inversion feeling) when changing to the oily state. Specifically, the inner side of the forearm coated with 0.3 g of the oil-in-water emulsion composition is loaded with a load of 0.1 to 8.0 N with a second finger, a third finger, and a fourth finger at a major axis of 10 cm and a minor axis of 5 cm. In the test in which the orbital movement is performed, the emulsifier type starts to change into an oil form after 1 to 20 laps corresponds to the composition of the present invention.
The point of starting to change to oil is usually the moment when a feeling of lightening the orbiting motion of the finger is obtained. With such a reversal feeling, the composition of the present invention can have a pleasant feeling of use and a good feeling of use with a light feel without melting and without friction.

  The composition of the present invention can be preferably applied as a skin external preparation. More preferably, it can be applied as a cosmetic (including quasi-drugs), and is usually preferably applied to a skin cleansing cosmetic, that is, a cleansing material.

The composition of this invention can be manufactured with a normal preparation method.
Preferably, the outer aqueous phase is appropriately prepared so as to form an α gel.

  As long as the effects of the present invention are not impaired, the cosmetics of the present invention can optionally contain other components usually used in cosmetics. Examples of such optional components include powders, other alcohols, humectants, sequestering agents, monosaccharides, oligosaccharides, polysaccharides, amino acids, organic amines, polymer emulsions, pH adjusters, vitamins, and antioxidants. Agents, preservatives, water-soluble polymers, fragrances, essential oils, and various active ingredients.

The shape of the powder is not particularly limited, such as spherical, needle-like, or plate-like. For example, inorganic powder (eg, talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, red Mica, biotite, permiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, silica, alumina, zeolite, barium sulfate, calcined Calcium sulfate (baked gypsum), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, metal soap (for example, zinc myristate, calcium palmitate, aluminum stearate), boron nitride, etc .; organic powder (for example, polyamide resin powder ( Nylon powder), polyethylene Powder, poly (meth) methacrylate powder, polystyrene powder, copolymer resin powder of styrene and acrylic acid, silicone resin powder, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, etc.); inorganic white pigment ( For example, titanium dioxide, zinc oxide, etc.); inorganic red pigments (eg, iron oxide (Bengara), iron titanate, etc.); inorganic brown pigments (eg, γ-iron oxide, etc.); inorganic yellow pigments (eg, Yellow iron oxide, ocher, etc.); inorganic black pigments (eg, black iron oxide, low-order titanium oxide, etc.); inorganic purple pigments (eg, mango violet, cobalt violet, etc.); inorganic green pigments (eg, chromium oxide) , Chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments (eg ultramarine, bitumen, etc.); pearl pigments (eg, titanium oxide coated mica, acid) Titanium coated bismuth oxychloride, titanium oxide coated talc, colored titanium oxide coated mica, bismuth oxychloride, fish scale foil, etc.); metal powder pigments (eg, aluminum powder, copper powder, etc.); organic pigments such as zirconium, barium or aluminum lake (For example, red 201, red 202, red 204, red 205, red 220, red 226, red 228, red 405, orange 203, orange 204, yellow 205, yellow 401 And organic pigments such as Blue No. 404, 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 202, yellow 203, green 3 and blue 1); natural pigments (for example, chloroph And β-carotene).

Examples of alcohols include monovalent lower alcohols such as ethanol, propanol, isopropanol, isobutyl alcohol, and t-butyl alcohol. In addition, as a polyhydric alcohol, a divalent alcohol (for example, ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, tetramethylene glycol, 2,3-butylene glycol, penta Methylene glycol, 2-butene-1,4-diol, hexylene glycol, octylene glycol, etc.); trivalent alcohol (eg, glycerin, trimethylolpropane, etc.); tetravalent alcohol (eg, 1,2,6- Pentaerythritol such as hexanetriol); pentahydric alcohol (for example, xylitol, etc.); hexavalent alcohol (for example, sorbitol, mannitol, etc.); polyhydric alcohol polymer (for example, diethylene glycol, dipropylene glycol, triethyl) Glycol, polypropylene glycol, tetraethylene glycol, diglycerin, polyethylene glycol, triglycerin, tetraglycerin, polyglycerin, etc.); divalent alcohol alkyl ethers (for example, 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 Dihydric alcohol alkyl ethers (for example, 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 monomethyl ether) Ethyl 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 (for example, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monophenyl ether acetate, ethylene glycol diazinate, 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 .; glycerin monoalkyl ether (for example, Xyl alcohol, ceralkyl alcohol, batyl alcohol, etc.); sugar alcohols (eg, sorbitol, maltitol, maltotriose, mannitol, sucrose, erythritol, glucose, fructose, amylolytic sugar, maltose, xylitol, amylolytic sugar reducing alcohol) Etc.); Glysolid; Tetrahydrofurfuryl alcohol; POE-Tetrahydrofurfuryl alcohol; POP-Butyl ether; POP / POE-Butyl ether; Tripolyoxypropylene glycerin ether; POP-glycerin ether; POP-glycerin ether phosphate; POE-pentane erythritol ether, polyglycerol, etc. are mentioned.
However, in the present invention, the alcohol content is preferably 10% by mass or less based on the entire composition from the viewpoint of appropriately maintaining the viscoelasticity of the composition.

  Examples of the humectant include polyethylene glycol, propylene glycol, glycerin, 1,3-butylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate. Sodium lactate, bile salt, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO) PO adduct, Izayoi rose extract, yarrow extract, merirot extract and the like.

  Examples of the sequestering agent include 1-hydroxyethane-1,1-diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid tetrasodium salt, disodium edetate, trisodium edetate, and tetrasodium edetate. Sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid, trisodium ethylenediaminehydroxyethyl triacetate and the like.

Examples of monosaccharides include tricarbon sugars (eg, D-glyceryl aldehyde, dihydroxyacetone, etc.); tetracarbon sugars (eg, D-erythrose, D-erythrulose, D-treose, erythritol, etc.); pentose sugars (eg, L-arabinose, D-xylose, L-lyxose, D-arabinose, D-ribose, D-ribulose, D-xylulose, L-xylulose, etc .; hexose (eg, D-glucose, D-talose, D) -Bucicose, D-galactose, D-fructose, L-galactose, L-mannose, D-tagatose, etc.); pentose sugar (eg, aldheptose, heproose, etc.); octose sugar (eg, octulose, etc.); For example, 2-deoxy-D-ribose, 6-deoxy-L-galactose, 6-deoxy-L Mannose, etc.]; amino sugars (eg, D-glucosamine, D-galactosamine, sialic acid, aminouronic acid, muramic acid, etc.); uronic acids (eg, D-glucuronic acid, D-mannuronic acid, L-guluronic acid, D- Galacturonic acid, L-iduronic acid, etc.).

  Examples of the oligosaccharides include sucrose, gnocyanose, umbelliferose, lactose, planteose, isoliquinoses, α, α-trehalose, raffinose, lycnose, umbilicin, stachyose verbusose and the like.

  Examples of the polysaccharide include cellulose, quince seed, chondroitin sulfate, starch, galactan, dermatan sulfate, glycogen, gum arabic, heparan sulfate, hyaluronic acid, tragacanth gum, keratan sulfate, chondroitin, xanthan gum, mucoitin sulfate, guar gum, dextran, kerato sulfate. , Locust bean gum, succinoglucan, caronic acid and the like.

Examples of amino acids include neutral amino acids (eg, threonine, cysteine, etc.); basic amino acids (eg, hydroxylysine, etc.) and the like. Examples of the amino acid derivative include acyl sarcosine sodium (lauroyl sarcosine sodium), acyl glutamate, acyl β-alanine sodium, glutathione, pyrrolidone carboxylic acid and the like.

  Examples of the organic amine include monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-methyl-1-propanol, and the like. Is mentioned.

  Examples of the polymer emulsion include an acrylic resin emulsion, a polyethyl acrylate emulsion, an acrylic resin liquid, a polyacryl alkyl ester emulsion, a polyvinyl acetate resin emulsion, and a natural rubber latex.

  Examples of the pH adjusting agent include buffers such as lactic acid-sodium lactate, citric acid-sodium citrate, and succinic acid-sodium succinate.

Examples of vitamins include vitamins A, B1, B2, B6, C, E and derivatives thereof, pantothenic acid and derivatives thereof, biotin and the like.

Examples of the antioxidant include tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallic acid esters and the like.
Examples of the antioxidant assistant include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, kephalin, hexametaphosphate, phytic acid, and ethylenediaminetetraacetic acid.
Examples of the preservative include parabens and phenoxyethanol.

Examples of the water-soluble polymer include plant-based polymers (for example, gum arabic, tragacanth gum, galactan, guar gum, carob gum, caraya gum, carrageenan, pectin, agar, quince seed (malmello), alge colloid (guckweed extract), starch (rice , Maize, potato, wheat), glycyrrhizic acid); microbial polymers (eg, xanthan gum, dextran, succinoglucan, bullulan, etc.); natural polymers such as animal polymers (eg, collagen, casein, albumin, gelatin, etc.) Water-soluble polymers,
Starch-based polymers (for example, carboxymethyl starch, methylhydroxypropyl starch, etc.); cellulosic polymers (methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, hydroxypropylcellulose, carboxymethylcellulose, carboxymethylcellulose sodium, Semi-synthetic water-soluble polymers such as alginic acid polymers (eg, sodium alginate, propylene glycol alginate, etc.)
Vinyl polymer (eg, polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyrrolidone, carboxyvinyl polymer, etc.); Polyoxyethylene polymer (eg, polyethylene glycol 20,000, 40,000, 60,000, etc.); Acrylic polymer Polymers (for example, sodium polyacrylate, polyethyl acrylate, polyacrylamide, etc.); polyethyleneimine; synthetic water-soluble polymers such as cationic polymers.

  Examples of various active ingredients include anti-inflammatory agents (for example, glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.); whitening agents (for example, placenta extract, yukinoshita extract, arbutin, etc.); Various extracts (e.g., buckwheat, auren, shikon, peonies, assembly, birch, sage, loquat, carrot, aloe, mallow) , Capsicum, chimpi, toki, seaweed, etc.), activator (for example, royal jelly, photosensitizer, cholesterol derivative, etc.); blood circulation promoter (for example, nonyl acid valenyl amide, nicotinic acid benzyl ester, nicotinic acid β-butoxy ethyl ester) Capsaicin, gingeron, cantalis tincture, ictamol, tannic acid, α-borneol, tocopherol nicotinate, inositol hexanicotinate, cyclandrate, cinnarizine, trazoline, acetylcholine, verapamil, cephalanthin, γ-oryzanol, etc.); antiseborrheic agent (For example, sulfur, thianthol, etc.); anti-inflammatory agents (for example, tranexamic acid, thiotaurine, hypotaurine, etc.) and the like.

  EXAMPLES Hereinafter, although an Example demonstrates this invention still in detail, this invention is not limited to a following example, unless the summary is exceeded.

<Preparation of composition>
Based on the formulation shown in Table 1, oil-in-water emulsion compositions (cleansing materials) of Examples and Comparative Examples were prepared according to a conventional method.

<Evaluation of composition>
Ten professional evaluation panelists evaluated the following items when using the compositions of Examples and Comparative Examples. The results are shown in Table 1.
(1) Number of laps until reversal feeling Take 0.3 g of the composition, apply the inner side of the forearm, use a second finger, a third finger, and a fourth finger to load 10 to 10 cm long with a load of 0.1 to 8.0 N A circular motion with an axis of 5 cm was performed. The number of laps until the composition started to change to an oily state was counted, and the average value of all the panelists was calculated to give a score for the composition.

(2) Usability First, a commercially available powder foundation, mascara, and lipstick were applied to the face and dried for about 4 hours. Next, about 1.2 g of the composition was taken, stretched over the entire face while looking into the mirror, and blended with the makeup. The initial melt feeling when the properties at this time changed was evaluated based on the following criteria. The average value of 10 persons was calculated | required and it was set as the score of the composition.
Standard: The feeling of melting on the skin
There is very ... 5 points Somewhat ... 4 points Not much ... 3 points Almost not ... ... 2 points not ... 1 point

(3) Cleansing power First, a commercially available powder foundation, mascara, and lipstick were applied to the face and allowed to dry for about 4 hours. Next, about 1.2 g of the composition was taken, stretched over the entire face while looking into the mirror, blended with the make-up, rinsed with warm water, and the removal of the make-up stain was evaluated based on the following criteria. The average value of 10 persons was calculated | required and it was set as the score of the composition.
Criteria: Make-up stains are very good compared to Comparative Example 1 .... 5 points Good ... 4 points Equivalent ... ·········· 3 points Slightly bad ······· 2 points

  According to the present invention, there is provided an oil-in-water emulsified composition that provides a comfortable feeling of use due to a reversal feeling and is excellent in cleansing power even if not necessarily a high internal phase. Since such a composition is suitable as a skin cleansing cosmetic, it is very useful industrially.

Claims (6)

Contains an oily component, an aqueous component, and a surfactant;
The oil component is 40% by mass or more of the whole composition;
The oil component is an oil-in-water emulsion composition containing 0.2 to 4.0% by mass of solid fat having a melting point of 45 to 75 ° C.
The inner side of the forearm coated with 0.3 g of the oil-in-water emulsion composition is rotated by a second finger, a third finger, and a fourth finger with a load of 0.1 to 8.0 N and a major axis of 10 cm and a minor axis of 5 cm. In the test, the oil-in-water emulsified composition in which the emulsifier type starts to change into an oily state 1 to 20 times.   The oil-in-water emulsion composition according to claim 1, wherein the solid fat is selected from waxes and fatty acid esters.   The oil-in-water emulsion composition according to claim 1 or 2, wherein the aqueous component contains a fatty acid having 16 to 22 carbon atoms.   The oil-in-water emulsion composition according to any one of claims 1 to 3, wherein the aqueous component contains an alcohol having 16 to 22 carbon atoms.   The oil-in-water emulsion composition according to any one of claims 1 to 4, which is a cosmetic.   The cosmetic according to claim 5, which is for skin cleaning.