JP6101310B2 - Oil-in-water emulsion composition - Google Patents

Description

  The present invention relates to an oil-in-water emulsion composition.

  An oil-in-water emulsified composition containing a water-swellable clay mineral is a composition characterized by having a good feeling of spreading, non-stickiness and a refreshing feel.

  However, when the blending amount of polar oil in the oil content of the oil-in-water emulsion composition is large, there is a problem that it is difficult to obtain a preparation with good emulsion stability.

  On the other hand, an oil-in-water emulsion composition has been proposed in which a water-swellable clay mineral is combined with a polyether-modified silicone oil to stably emulsify an oil containing a specific silicone oil or polar oil (Patent Document 1). reference). In addition, an oil-in-water emulsion composition in which a specific ultraviolet absorber or polar oil is stably emulsified by combining a water-swellable clay mineral with a water-soluble polymer, a higher fatty acid, and a surfactant has been proposed (patent) Reference 2).

JP 2007-39612 A International Publication No. 2011/039790 Pamphlet

  However, in the technique described in Patent Document 1, a stable emulsified composition cannot be obtained unless a large amount of water-swellable clay mineral is blended. For this reason, the prepared emulsified composition has a high hardness and has a dosage form. There was a problem that the sense of penetration of the formulation was not felt. In addition, in the technique described in Patent Document 2, since a water-soluble polymer and a water-swellable clay mineral are used in combination, stickiness is strongly felt, and more solid oils such as higher fatty acids and higher alcohols are blended. Therefore, there is a problem that the viscosity becomes high and it is difficult to feel the penetration of the preparation.

  Accordingly, the present invention relates to an oil-in-water emulsion composition having a refreshing feel without stickiness and improved permeation and moisturizing feeling at the time of coating and excellent in emulsion stability.

  As a result of various attempts for the blending of an oil agent and a water-soluble humectant in an oil-in-water emulsion composition, the inventors have satisfied the above requirements by using a specific polar oil, a specific polyhydric alcohol and a water-soluble polymer in combination. I found out.

That is, the present invention provides an oil-in-water emulsion composition containing the following components (A) to (D) and having a total content of oily components including the component (B) of 1% by mass to 30% by mass. It is to provide.
(A) Water-swellable clay mineral
(B) Polar oil that is liquid at 20 ℃
(C) at least one selected from tetravalent, pentavalent and hexavalent polyhydric alcohols
(D) Water-soluble polymer

  The oil-in-water emulsified composition of the present invention has good emulsification stability, and when applied to the skin, it has a smooth feel with no stickiness and a high penetration feeling and moisturizing feeling. Excellent sustainability.

[Component (A): Water-swellable clay mineral]
The oil-in-water emulsion composition of the present invention contains a water-swellable clay mineral as the component (A). The water-swellable clay mineral is a clay mineral that swells when mixed with water to form a gel. Any water-swellable clay mineral may be used as long as it can be incorporated into a preparation for external application to the skin. The mica can be preferably mentioned. These can be used alone or in combination of two or more. These water-swellable clay minerals are preferably used in the form of a dispersion (for example, sol or gel) or a suspension.

  Among these, from the viewpoint of water swelling, smectite clay minerals are preferred, hectorite, montmorillonite, nontronite, saponite, beidellite, soconite and mixtures thereof are more preferred, hectorite, montmorillonite, saponite and mixtures thereof. Is more preferable.

  These components (A) are generally commercially available. For example, products containing montmorillonite include Kunipia G, Kunipia F (above, Kunimine Kogyo Co., Ltd.), Bentonite W, Bengel (above, Hojun Co.); The products to be used include Veegum T, Veegum HV, Veegum F, Veegum K (above, manufactured by Vanderbuild); As products containing hectorite, Benton EW, Benton LT (above, made by Elementis Japan), Hector Bright AW, Hectablite 200, Hectabilite EW (above, manufactured by American Colloid Co., Ltd.) and the like can be mentioned.

  The content of the component (A) in the composition of the present invention is preferably 0.01% by mass or more from the viewpoints of low-temperature stability, feeling of use (permeability, persistence of moisturizing feeling, non-stickiness, and no squeaking feeling). More preferably 0.02% by mass or more, still more preferably 0.05% by mass or more, further preferably 0.08% by mass or more, further preferably 0.1% by mass or more, and preferably 10% by mass or less, more preferably 5% by mass. Hereinafter, it is further preferably 3% by mass or less, more preferably 1.5% by mass or less, and further preferably 1% by mass or less.

[Component (B): Polar oil liquid at 20 ° C]
The oil-in-water emulsion composition of the present invention contains a polar oil that is liquid at 20 ° C. as component (B) from the viewpoints of stability, feeling in use, and the like. In the present invention, the term “polar oil” means an oily component whose solubility parameter δ _a at 25 ° C. is not 0 (J / cm ³ ) ^1/2 . Further, the “polar oil” means that at least one heteroatom having a high electronegativity, such as an oxygen atom, a nitrogen atom, a silicon atom, or a phosphorus atom, in a skeleton structure substantially formed from a carbon atom and a hydrogen atom. It is an oily component containing.

<Solubility parameter (SP value)>
Here, the solubility parameter in the present invention means a solubility parameter in Hansen's three-dimensional solubility space shown below. The definition and calculation of solubility parameters in Hansen's three-dimensional solubility space is described in the literature by CM Hansen, “The three dimensionnal solubility parameters”, J. Paint Technol., 39, 105 (1967).
According to this Hansen space,
δ _D characterizes the London dispersive force resulting from the formation of dipoles induced during molecular collisions,
δ _{p characterizes} the Debye interaction force between permanent dipoles, and also the Keesom interaction force between induced and permanent dipoles,
δ _{h characterizes} a specific interaction force (hydrogen bond, acid / base, donor / acceptor, etc.)
δ _a is determined by the equation: δ _a = (δ _D + δ _p ² + δ _h ² ) ^1/2
The parameters δ _p , δ _h , δ _D and δ _a are represented by (J / cm ³ ) ^1/2 .
In the present invention, using “Hansen Solubility Parameters in Practice (HSPiP)” which is software for Windows (registered trademark), δ _p , δ _h , δ _D are obtained from the structural formula of each compound, and according to the above equation δ _a was calculated.

  Component (B) as a polar oil that is liquid at 20 ° C., for example, glyceryl trioctanoate, avocado oil, olive oil, sesame oil, rice bran oil, safflower oil, soybean oil, corn oil, rapeseed oil, castor oil, cottonseed oil, Mink oil, macadamia nut oil, rosehip oil, almond oil, jojoba oil, triglycerides such as glyceryl tri (capryl / capric acid) and triglyceryl tri-2-ethylhexanoate; fatty acids such as oleic acid and isostearic acid; cetyl caprylate and dicaprin Propylene glycol acid, hexyl laurate, isostearyl laurate, isopropyl myristate, butyl myristate, decyl myristate, isotridecyl myristate, isocetyl myristate, isostearyl myristate, octyldodecyl myristate, palmitic acid Isopropyl, 2-ethylhexyl palmitate, isocetyl palmitate, isostearyl palmitate, ethyl oleate, decyl oleate, isodecyl oleate, oleyl oleate, propylene glycol dioleate, ethyl linoleate, isopropyl linoleate, ethyl isostearate, Isopropyl isostearate, isostearyl isostearate, propylene glycol isostearate, cetyl 2-ethylhexanoate, stearyl 2-ethylhexanoate, isononyl isononanoate, 2-ethylhexyl isononanoate, isotridecyl isononanoate, isodecyl isononanoate, diethyl sebacate, Estes such as diisopropyl sebacate, 2-ethylhexyl sebacate, 2-ethylhexyl methoxycinnamate, and octocrylene Oil; 2-octyldodecanol, isostearyl alcohol, branched or higher alcohols unsaturated, such as oleyl alcohol, tocopherol, such as chroman ring derivatives such as acetic acid tocopherol.

  Of these, isononyl isononanoate, 2-ethylhexyl isononanoate, isopropyl myristate, butyl myristate, isopropyl palmitate, isostearin, because of improved penetration, persistence of moisturizing, no stickiness Ethyl acetate, isopropyl isostearate, isostearyl isostearate, ethyl oleate, isopropyl linoleate, ethyl linoleate, glyceryl tri-2-ethylhexanoate, propylene glycol dicaprate, olive oil, macadamia nut oil, rosehip oil, almond oil Jojoba oil and the like are preferable.

  The polar oil that is liquid at 20 ° C. as the component (B) has a solubility parameter (SP value) of preferably 15 or more and 19 or less, more preferably 15 or more and 18 or less, from the viewpoint of storage stability and skin irritation. Further, from the viewpoint of improving the penetrating feeling and the sustainability of the moisturizing feeling, those having a molecular weight of 500 or less are preferred, and those having a molecular weight of 250 or more and 330 or less are more preferred. Particularly, the polar oil of component (B) is preferably a linear or branched fatty acid and an ester compound comprising alcohols, and is a straight chain having 6 to 20 carbon atoms. Ester compounds containing branched fatty acids and branched alcohols having 2 to 12 carbon atoms are more preferred, and linear or branched fatty acids having 7 to 16 carbon atoms and branched alcohols having 2 to 12 carbon atoms are used as the constituent components. An ester compound is more preferable, and an ester compound having a linear or branched fatty acid having 8 to 12 carbon atoms and a branched alcohol having 2 to 10 carbon atoms as constituent components is more preferable.

  Specifically, isononyl isononanoate (SP value 16.2, molecular weight 284.5), 2-ethylhexyl isononanoate (SP value 16.5, molecular weight 270.5), isopropyl myristate (SP value 16.8, molecular weight 270.4), butyl myristate (SP value 16.8) , Molecular weight 284.5), isopropyl palmitate (SP value 17.1, molecular weight 295.5), ethyl isostearate (SP value 17.3, molecular weight 312.5), isopropyl isostearate (SP value 17.2, molecular weight 326.5), ethyl oleate (SP value 17.1, molecular weight) 310.5), ethyl linoleate (SP value 17.1, molecular weight 308.5), isopropyl linoleate (SP value 17.1, molecular weight 322.5), propylene glycol dicaprylate (SP value 17.5, molecular weight 328.5), glyceryl tri-2-ethylhexanoate (SP Value 17.7, molecular weight 470.7) and the like. These can be used alone or in combination of two or more.

  The above component (B) can be used individually or in combination of 2 or more types. The content of the component (B) in the composition of the present invention is preferably 0.1% by mass or more, more preferably from the viewpoints of improvement in penetrating feeling, improvement in sustainability of moisturizing feeling, no stickiness, and no squeaking feeling. It is 2% by mass or more, more preferably 4% by mass or more, further preferably 6% by mass or more, preferably 20% by mass or less, more preferably 16% by mass or less, and further preferably 13% by mass or less.

[Oil components other than component (B)]
The oil-in-water emulsion composition of the present invention may further contain an oil component other than the component (B). The oily component other than the component (B) may be any non-polar oil and polar oil that is not liquid at 20 ° C., as long as it is used in ordinary cosmetics, for example, hydrocarbon oil, ester oil, Examples include higher alcohols, higher fatty acids, silicone oils, ether oils, and the like. The form of the oil component other than the component (B) may be liquid (nonpolar oil), paste (polar oil, nonpolar oil) or solid (polar oil, nonpolar oil) at 20 ° C.

  More specifically, hydrocarbon oils such as squalane, liquid paraffin, liquid isoparaffin, polybutene, hydrogenated polyisobutene, hydrogenated polydecene, petrolatum, etc .; myristyl myristate, cetyl myristate, stearyl stearate, cholesteryl stearate, cholesteryl oleate Solid ester oils such as isostearic acid hydrogenated castor oil; solid higher alcohols such as behenyl alcohol, oleyl alcohol, cholesterol, phytosterol; organopolysiloxane, organically modified silicone oil, cross-linked silicone oil, volatile silicone oil, Silicone oil such as polysilicone-15; solid vitamin A and oil-soluble vitamin A derivatives such as retinol, retinol acetate, retinol palmitate; tocopherol nicotinate, tocofu succinate Solid vitamin E and oil-soluble vitamin E derivatives such as rolls and tocopherol calcium succinate; Solid oil-soluble vitamin C derivatives such as ascorbyl palmitate and ascorbyl stearate; 2- (4-diethylamino-2-hydroxybenzoyl) -benzoic acid Acid hexyl ester, 2,4-bis [[4- (2-ethylhexyloxy) -2-hydroxy] phenyl] -6- (4-methoxyphenyl) -1,3,5-triazine, 2,4,6- Examples thereof include solid ultraviolet absorbers such as tris [4- (2-ethylhexyloxycarbonyl) anilino] -1,3,5-triazine, 4-tert-butyl-4′-methoxybenzoylmethane. Oily components other than these components (B) can be used alone or in combination of two or more.

  The total content of all oil components including the component (B) in the composition of the present invention is 1% by mass or more, preferably 5% by mass or more, and 30% by mass from the viewpoint of stability. Or less, preferably 28% by mass or less. From the viewpoint of non-stickiness and moisturizing feeling, it is 8% by mass or more, preferably 12% by mass or more, more preferably 16% by mass or more, and 26% by mass or less, preferably 24% by mass or less.

  In addition, the content of the component (B) in the total oil component is preferably 5% by mass or more, more preferably from the viewpoints of improved penetrating feeling, improved moisturizing effect, no stickiness, and no squeaky feeling. Is 15% by mass or more, more preferably 25% by mass or more, preferably 100% by mass or less, more preferably 90% by mass or less, still more preferably 75% by mass or less, and further preferably 60% by mass or less. .

[Component (C): at least one selected from tetravalent, pentavalent and hexavalent polyhydric alcohols]
The oil-in-water emulsion composition of the present invention contains at least one selected from tetravalent, pentavalent and hexavalent polyhydric alcohols as component (C). Component (C) used in the present invention is a compound having 4 to 6 alcoholic hydroxyl groups in the molecule. Examples of the tetravalent, pentavalent or hexavalent polyhydric alcohol include polyglycerin such as diglycerin and triglycerin; glucose, maltose, maltose, sucrose, xylitol, sorbitol, malbitol, polyoxyethylene methylglucoside, polyoxyethyleneethyl Examples thereof include sugars or sugar alcohols such as glucoside and polyoxyethylenepropylene glucoside. Of these, polyglycerin and sugar alcohol are preferred, polyglycerin is more preferred, and diglycerin is even more preferred from the viewpoints of improved penetrating feeling, no stickiness, and no squeaky feeling. The tetravalent, pentavalent or hexavalent polyhydric alcohols can be used alone or in combination of two or more.

  The content of the component (C) in the composition of the present invention is preferably 0.5% by mass or more, more preferably 1% by mass or more, and still more preferably, from the viewpoints of improved penetrating feeling, no stickiness, and no squeaky feeling. It is 2% by mass or more, preferably 10% by mass or less, more preferably 7% by mass or less, and further preferably 4% by mass or less.

[Divalent or trivalent polyhydric alcohol]
Furthermore, the oil-in-water emulsion composition of the present invention preferably contains a divalent or trivalent alcohol from the viewpoint of the sustainability of the moisturizing effect, the stickiness, and the squeaky effect. Examples of the dihydric alcohol include 1,3-butylene glycol, propylene glycol, 1,3-propanediol, 1,2-propanediol, dipropylene glycol, polyethylene glycol (weight molecular weight 1500 or less), polypropylene glycol (weight molecular weight). 1500 or less) Examples of the trihydric alcohol include glycerin and trimethylolpropane. Among these, 1,3-butylene glycol, propylene glycol, 1,3-propanediol, dipropylene glycol, and glycerin are preferable from the viewpoints of a moisturizing effect and suppression of squeaky feeling.

  A preferred polyhydric alcohol combination is a combination of glycerin, diglycerin, malbitol and dihydric alcohol, a more preferred combination is a combination of glycerin, diglycerin, malbitol and dipropylene glycol, and a more preferred combination is glycerin, diglyceride. A combination of glycerin and dipropylene glycol.

  The total content of all the polyhydric alcohols containing the component (C) in the composition of the present invention is preferably 7% by mass or more, more preferably from the viewpoint of improvement in penetrating feeling, improvement in moisturizing feeling, and sustainability of moisturizing feeling. Is 10% by mass or more, more preferably 12% by mass or more, preferably 25% by mass or less, more preferably 20% by mass or less, and still more preferably 18% by mass or less.

  In addition, the content of the component (C) in the total polyhydric alcohol is preferably 5% by mass or more, more preferably 10% by mass or more, and further preferably 15% by mass or more, from the viewpoint of maintaining the moisturizing feeling. Further, it is preferably 50% by mass or less, more preferably 30% by mass or less, and further preferably 25% by mass or less.

[Component (D): Water-soluble polymer]
The oil-in-water emulsion composition of the present invention contains a water-soluble polymer as component (D). Examples of the water-soluble polymer include water-soluble cationic polymers, anionic polymers, nonionic polymers, amphoteric or bipolar polymers.

  Specific examples of the cationic polymer include poly (dimethyldiallylammonium halide) type cationic polymer, dimethyldiallylammonium halide and acrylamide copolymer cationic polymer, quaternary nitrogen-containing cellulose ether, vinylpyrrolidone dimethyl Aminoethyl methacrylate copolymer cationized product, and condensation products of taroylamine or cocoylamine obtained from polyethylene glycol, epichlorohydrin, propyleneamine and beef tallow fatty acid.

  Examples of the poly (dimethyldiallylammonium halide) type cationic polymer include Marquat 100 (Nippon Lubrizol Corporation). Examples of the copolymer-type cationic polymer of dimethyldiallylammonium halide and acrylamide include Marquat 550 (Nippon Lubrizol Corporation). Examples of the condensation product of polyethylene glycol, epichlorohydrin, propyleneamine, and taroylamine or cocoylamine include Polycoat H (Henkel). Examples of the quaternary nitrogen-containing cellulose ether include polymer JR-400, polymer JR-125, polymer JR-30M (Amerkor). Examples of the cationized vinylpyrrolidone / dimethylaminoethyl methacrylate copolymer include Guffcoat 755 and Guffcoat 734 (Ashland).

  Specific examples of the anionic polymer include carboxyvinyl polymer, carboxymethyl cellulose, carrageenan, xanthan gum, polystyrene sulfonate, agar, gatch gum, caraya gum, pectin, alginate salt, poly (acrylic acid), (Na / acryloyldimethyl acrylate). Taurine Na) copolymers, and polymers of (meth) acrylic acid derivatives such as alkali metal salts and ammonium salts of (meth) acrylic acid.

  Specific examples of nonionic polymers include cellulose ether (hydroxybutylmethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, ethylhydroxyethylcellulose, hydroxyethylcellulose, etc.), propylene glycol alginate, polyacrylamide, poly (ethylene oxide) , Polyvinyl alcohol, polyvinyl pyrrolidone, amylose, hydroxyethyl amylose, and mixtures thereof.

  Specific examples of the amphoteric polymer or the bipolar polymer include octylacrylamide / acrylate / butylaminoethyl methacrylate copolymer, polyquaternium-47, and polyquaternium-43.

  These water-soluble polymers can be used alone or in combination of two or more. Among these, xanthan gum, carboxyvinyl polymer, acrylic acid / alkyl methacrylate copolymer, hydroxypropyl methylcellulose, polyacrylamide, (Na acrylate / acryloyl dimethyl taurine Na) due to ease of application to various dosage forms Copolymers, hyaluronic acid and alkali metal salts thereof are preferred.

  The content of the water-soluble polymer in the composition of the present invention is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, and still more preferably, from the viewpoints of the stability of the preparation, excellent moisture transpiration suppression effect and blocking effect Is 0.1% by mass or more, preferably 5% by mass or less, more preferably 3% by mass or less, and still more preferably 1.5% by mass or less.

〔water〕
The oil-in-water emulsion composition of the present invention contains water. The content of water in the composition of the present invention is preferably 45 or more, more preferably 50% by mass or more, and still more preferably, from the viewpoint of excellent usability such as formulation stability, excellent penetrating feeling, and no stickiness. It is 55% by mass, preferably 75% by mass or less, more preferably 70% by mass or less, and still more preferably 65% by mass or less.

[Other optional ingredients]
In the oil-in-water emulsion composition of the present invention, in addition to the above components, coloring pigments such as tar dyes and iron oxides; preservatives such as parabens and phenoxyethanol; sodium cetyl sulfate, N-stearoyl-L-glutamate Anionic surfactants such as: polyhydric alcohol fatty acid esters, polyglycerin fatty acid esters, polyether-modified silicones, sucrose esters and other nonionic surfactants; tetraalkylammonium salts and other cationic surfactants; betaine type, sulfobetaine type Amphoteric surfactants such as sulfoamino acid type; natural surfactants such as lecithin, lysophosphatidylcholine, ceramide, cerebroside; pigments such as titanium oxide and zinc oxide; antioxidants such as dibutylhydroxytoluene; sodium chloride , Magnesium chloride, sodium sulfate, Inorganic salts such as potassium citrate; Organic acid salts such as sodium citrate, potassium acetate, sodium succinate, sodium aspartate, sodium lactate, carnitine salt, gamma aminobutyric acid, lipoic acid; ethanolamine hydrochloride, ammonium nitrate, arginine hydrochloride, etc. Salts; Chelating agents such as edetic acid; Neutralizing agents such as potassium hydroxide, diisopropanolamine and triethanolamine; Biopolymers such as hyaluronic acid and collagen; Placenta extract; Phenylbenzimidazole sulfonate and benzophenone-4 Water-soluble ultraviolet absorbers such as terephthalylidene dicamphorsulfonate, vitamin C such as ascorbate and ascorbic acid glucoside, water-soluble vitamin C derivatives, and the like can be contained.

  Furthermore, the oil-in-water emulsion composition of the present invention can contain an extract of a plant, seaweed or fungus body. Such extracts include, for example, artichoke, eye, arnica, aloe, artea, ashitaba, acerola, apricot, almond, achacha, akebi, anise, avocado, inchinko, nettle, strawberry, fennel, turmeric, prickly pear, oolong tea, Ages, Echinacea, Oats, Enmezo, Edelweiss, Dutch Calligraphy, Ogaku, Ogon, Ouren, Greater Crape myrtle, Hypericum, Orange, Okra, Olive Leaf, Cassis, Valerian, Salmon, Fire Thorn, Chamomile, Camcum, Carrot, Karamumugi, Karamumugi Licorice, cucumber, kiwi, kiwi, kina, kiraya, kizuta, gabba tea, kiso, clara, kumazasa, mulberry, walnuts, grapefruit, genoshoko, gentian, Tutu, Kohiratambutsu, Burdock, Comfrey, Wheat germ, Sakura, Sabonso, Salvia, Hawthorn, Saishin, Saitai, Sanshi, Shimosukeso, Juyaku, Shichigenge, Shobu, Ginger, Shikon, Shiso, Birch, Peonies, Giant, Seekers, Shimon Horsetail, star fruit, mallow, cucumber, hawthorn, sardine, pear, white willow, sage, assembly, soybean, daidai, thyme, tachibana, tacitrus, tamarind, tea, clove, chimpi, moth, dokudami, toki, Spruce, spruce, tomato, pearl millet, wisteria tea, tormentilla, corn, neem, green pepper, elderberry, garlic, carrot, wild rose, papuames, hibiscus, parsley, bana , Roses, pearl barley, hazelnuts, pecan nuts, cypress, hyssop, Himalayan raspberry, himefuuro, sandalwood, bilberry, loquat, prunes, grapes, chrysanthemum daffodil, husafutsugi, futomomo, peppermint, safflower, loofah, white genera, white genera Cypress, linden tree, button boo, button, hop, jojoba, quince, maika, maronier, pine, mandarin, mugwort, melissa, evening primrose, peach, maple, cornflower, saxifrage, eucalyptus, lily, persimmon, yakuinin, mugwort, orchid, lime , Lavender lettuce, apple, Ryukyu mugwort, rooibos, forsythia, lemon, lemon balm, rose hips, rosemary, green algae, red algae, brown algae, broomfish, shiitake mushrooms, cricket mushrooms, saroko Shikake, white jellyfish, litchi, cordyceps, yeast, lactic acid bacteria, whole rhizobial plants, leaves, stems, roots, fruits, seeds, flowers, fruit bodies, fungus bodies, water or glycerin, propylene glycol, ethanol, butylene glycol, etc. Examples thereof include an organic solvent or a mixture thereof, or an extract extracted with an oil such as olive oil and macadamia nut oil. Chlorophyll is also a plant extract. In addition, lactic acid bacteria and yeast culture solutions using raw milk, fruit juice, synthetic medium, and semi-synthetic medium can be used regardless of whether or not the cells are removed.

The oil-in-water emulsified composition of the present invention has a good feeling when applied to the skin, for example, good elongation and a good feeling such as a refreshing feeling. Therefore, the oil-in-water emulsion composition of the present invention can be used for cosmetics, quasi-drugs, pharmaceuticals, etc., and is particularly suitable as a skin external composition (emulsion type, cream type, beauty liquid type, etc.). Can be applied to.
As the dosage form of the oil-in-water emulsified cosmetic of the present invention, it can be applied to liquids, emulsions, creams, pastes, solids, multilayers, etc., and also as a sheet, spray or mousse. Applicable.

  The method for producing an oil-in-water emulsion composition of the present invention may include a step of mixing and stirring the components (A) to (D) and water. Further, the method for producing an oil-in-water emulsion composition may include a step of mixing an aqueous phase containing components (A), (C), (D) and water and an oil phase containing component (B). .

  (1) Sensory evaluation test and (2) Storage stability test performed in Examples and Comparative Examples will be described.

(1) Sensory evaluation test For the professional female panel (3 persons), the oil-in-water emulsion compositions shown in the examples and comparative examples were used, and “penetration feeling”, “moisturizing feeling during application”, “moisturizing feeling” We conducted a questionnaire on the five items of “Continuation (Moisturizing feeling 15 minutes after application)”, “Sticky”, and “Squeaky feeling”. 5 for the best effect, 1 for the worst, and “stickiness” and “squeaking” are 5 when the stickiness or squeaky is the weakest, and 1 for the strongest. Went. A result is shown by the average score of the evaluation.

(2) Storage stability test When the sample is placed in a glass bottle and left to stand at 45 ° C for 3 months, the appearance and appearance are observed. If there are obvious abnormalities (separation, precipitation, etc.), x is slightly abnormal. Is indicated by Δ, and the case where no abnormality is observed is indicated by ○.

Examples 1-6, Comparative Examples 1-4
The oil-in-water emulsion composition for skin shown with the composition of Table 1 was prepared, and said evaluation was implemented. The results are also shown in Table 1. In the table, “SP” indicates the SP value, and “MW” indicates the molecular weight.

[Preparation method]
1. Ingredients 1, 13-17 and 19-23 are mixed, heated to 80 ° C., stirred and mixed to give composition A.
2. Components 2 to 12 and 18 are mixed, heated to 80 ° C., and mixed by stirring to obtain Composition B.
3. The composition B is gradually added to the composition A, stirred and mixed uniformly, and cooled.

* 1 Kunipia G4, Kunimine Kogyo * 2 Vegetable oil mixture of 20% olive oil, 40% almond oil, 40% rosehip oil * 3 Carnation, Sonneborn * 4 White protopet, Sonneborn * 5 Amisoft HS-11P, manufactured by Ajinomoto Co., Inc.

The examples of the present invention were excellent in permeation feeling, moisturizing feeling during application, and persistence of moisturizing feeling, without stickiness and squeaky feeling, and excellent in storage stability.
On the other hand, in Comparative Example 1 containing no component (A), the permeation feeling was poor, the persistence of the moisturizing feeling was low, the stickiness and squeaky feeling were strong, and the storage stability was not sufficient. In Comparative Example 2 containing no component (B), the penetrating feeling was poor, the moisturizing feeling was low, and the stickiness and squeaking feeling were strong. In Comparative Example 3 containing no component (C), the penetrating sensation was poor, the moisturizing feeling during application, the sustainability of the moisturizing feeling was low, and the stickiness and squeaky feeling were strong. In Comparative Example 4 containing no component (D), the moisturizing feeling at the time of application and the persistence of the moisturizing feeling were poor, the stickiness and squeaky feeling were strong, and the storage stability was poor.

  Hereinafter, formulation examples of the present invention will be described. Each formulation has the effects of the present invention, and is excellent as an oil-in-water emulsion composition.

Formulation Example 1 (Emulsion)
Component Content (mass%)
Bentonite * 1 0.3
2-ethylhexyl isononanoate 2
Isononyl isononanoate 3
Almond oil 2.5
Rosehip oil 2
Macadamia nut oil 0.5
Liquid paraffin 4
Squalane 3
Behenic acid 0.4
Behenyl alcohol 0.1
Phytosterol 0.3
Diglycerin 2
Sorbitol 0.5
Malbitol 0.5
Dipropylene glycol 6
Concentrated glycerin 6
Xanthan gum 0.5
Sodium hyaluronate 0.01
Glyceryl stearate 1.2
N-stearoyl-L-sodium glutamate * 5 0.2
Edetate disodium 0.05
Monoammonium glycyrrhizinate 0.2
Phenoxyethanol 0.3
Rosemary extract * 6 0.1
Lemon extract * 7 0.1
Sage extract * 8 0.1
Lavender extract * 9 0.1
Bilberry leaf extract * 10 0.1
Spruce extract * 11 0.1
Glycine 0.1
L-Alanine 0.1
Hydrolyzed silk solution * 12 0.1
Pear juice fermented liquid * 13 0.1
Soymilk fermentation broth * 14 0.1
Fragrance 0.1
Purified water balance

* 6 Mannen extract, Koei Kogyo Co., Ltd. * 7 Lemon Extra Liquid, Ichimaru Falcos * 8 Salvia Extract BG-J, Maruzen Pharmaceutical * 9 Lavender Extract BG, Maruzen Pharmaceutical * 10 Cure Berry, manufactured by Ichimaru Falcos * 11 Spruce Liquid B, manufactured by Ichimaru Falcos * 12 Silk Protein Extract N, manufactured by Ichimaru Falcos * 13 Fermentation Pear B, manufactured by Ichimaru Falcos * 14

  The following floral system compounding fragrance | flavors were used for the fragrance | flavor used by the said formulation example.

Floral-type compounding fragrance
Component Content (mass%)
Bergamot oil 2.0
Linarel acetate 3.5
Methyl anthranilate 0.2
Pettigrain oil 0.5
Auranthiol 10% DPG 1.0
Amyl allyl glycolate 1% DPG 0.5
Galvanum oil 1% DPG 0.1
Blackcurrant Buzz Absolute 10% DPG 1.5
Tadget oil 10% DPG 0.8
Ylang Ylang Oil Extra 2.0
Benzyl acetate 5.0
Methyl dihydrojasmonate 15.0
Sis Jasmon 10% DPG 2.0
Jasmine Absolute 0.5
Indole 5% DPG 0.5
Alphahexyl cinnamic aldehyde 1.5
L-citronellol 0.5
Rose oil 0.5
Rose Absolute 0.5
Damasenone 1% DPG 0.5
L-Rose oxide 1% DPG 0.5
Dimethylbenzyl carbonyl acetate 1.0
Hydroxycitronellal 3.0
Lilar 4.5
Cyclamenaldehyde 0.5
Alpha isomethyl ionone 4.0
Oris concrete 10% DPG 0.8
Methyl eugenol 0.5
ISO E Super 2.5
Belt Fix Cool 4.0
Vetiver acetate 2.0
Sandalwood oil 1.5
Bagdanol 10% DPG 1.0
Patchouli oil 10% DPG 0.2
Everneil 10% DPG 1.5
Garac Solid 50% Benzyl Benzoate 12.0
Cyclopentadecanolide 4.0
Heliotropin 0.5
Coumarin 0.5
Vanillin 10% 0.5
Ethyl vanillin 10% 2.5
Raspberry ketone 10% 0.5
Gamma undecalactone 10% 1.5
Gamma decalactone 10% 1.5
Lovedanum Absolute 10% 0.5
Dipropylene glycol Residual meter 100.0

Claims (6)

Containing the following components (A) to (D), the total content of oily components including component (B) is 1% by mass to 30% by mass , and the total content of polyhydric alcohols including component (C) Oil-in-water emulsification with an amount of 7% by mass to 25% by mass and a content of component (C) of 10% by mass to 30% by mass in the total content of the polyhydric alcohol contained in the composition Composition.
(A) Water-swellable clay mineral
(B) Polar oil that is liquid at 20 ℃
(C) at least one selected from tetravalent, pentavalent and hexavalent polyhydric alcohols
(D) Water-soluble polymer   The oil-in-water emulsion composition according to claim 1, wherein the content of the component (B) is 10% by mass or more based on the total content of the oily components contained in the composition. The oil-in-water emulsion composition according to claim 1 or 2, wherein the content of the component (C) is 15 % by mass or more and 25 % by mass or less in the total content of the polyhydric alcohol contained in the composition.   The oil-in-water emulsion composition according to any one of claims 1 to 3, wherein the SP value of the component (B) is 15 or more and 19 or less and the molecular weight is 500 or less.   The oil-in-water emulsion composition according to any one of claims 1 to 3, wherein the SP value of the component (B) is from 15 to 18, and the molecular weight is from 250 to 330.   The oil-in-water emulsification according to any one of claims 1 to 5, wherein the component (B) contains an ester of a linear or branched fatty acid having 6 to 20 carbon atoms and a branched alcohol having 2 to 12 carbon atoms. Composition.