JP2021151999A - Oil-in-water type emulsion composition - Google Patents

Abstract

To provide an oil-in-water type emulsion composition excellent in appearance by suppressing white turbidity of a water phase by reducing the release of a powder from emulsion particles while suppressing oil float.SOLUTION: There is provided an oil-in-water type emulsion composition which comprises a component (A): one or more powders selected from the group consisting of an octenyl succinic acid starch ester metal salt, talc, nylon, a polymethyl methacrylate, a polymethylsilsesquioxane and a (vinyl dimethicone/methicone silsesquioxane)crosspolymer, a component (B): decaisostearic acid polyglyceryl -10, a component (C): an oily component having IOB value of 0 to 0.45 which is one or more selected from the group consisting of a silicone oil, a hydrocarbon oil, an ester oil and a vegetable oil and a component (D): water or water and ethanol.SELECTED DRAWING: None

Description

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

Some cosmetics such as body lotions, refreshing cosmetics, and deodorants use so-called pickering emulsions, in which oil droplets are stabilized by powder and contain no surfactant or only a small amount. Exists. When the pickering emulsion is used in cosmetics, it is possible to suppress the irritation and stickiness of the skin caused by the surfactant, and while obtaining the powder-derived effect of making the sticky skin smooth and soft, the oily component makes it possible. It is very useful in that it can give a feeling of low skin friction that is felt when rubbing the skin, and further reduce the powdery feeling and give an appropriate moisturizing feeling. As cosmetics using the pickering emulsion, for example, those disclosed in Patent Documents 1 to 4 are known.

Japanese Unexamined Patent Publication No. 2000-95638 Japanese Unexamined Patent Publication No. 2000-956639 JP-A-2018-188497 Japanese Unexamined Patent Publication No. 2019-202962

However, if a sufficient amount of powder is added to the oil-in-water pickering emulsion to suppress oil floating, the powder that does not contribute to the formation of emulsion particles is likely to be released and the aqueous phase (matrix) becomes cloudy. There was a problem that it occurred.

Therefore, an object of the present invention is to provide an oil-in-water emulsified composition having an excellent aesthetic appearance by suppressing cloudiness of the aqueous phase.

As a result of diligent studies to achieve the above object, the present inventors have found that component (A): octenyl succinate starch ester metal salt, talc, nylon, polymethylmethacrylate, polymethylsilsesquioxane, and (vinyldimethicone / vinyl dimethicone /). One or more powders selected from the group consisting of methicone silsesquioxane) crosspolymer, component (B): polyglyceryl decisostearate-10, component (C): silicone oil, hydrocarbon oil, ester oil, An oily component selected from the group consisting of vegetable oil and having an IOB value of 0 to 0.45, and component (D): water or an oil-in-water emulsified composition containing water and ethanol. Found that it is aesthetically pleasing by suppressing the cloudiness of the aqueous phase. The present invention has been completed based on these findings.

That is, the present invention provides an oil-in-water emulsified composition containing the following component (A), the following component (B), the following component (C), and the following component (D).
Ingredient (A): One selected from the group consisting of octenyl succinate starch ester metal salt, talc, nylon, polymethyl methacrylate, polymethylsilsesquioxane, and (vinyldimethicone / methiconesilsesquioxane) crosspolymer. The above powder component (B): Polyglyceryl decisostearate-10
Component (C): An oily component selected from the group consisting of silicone oil, hydrocarbon oil, ester oil, and vegetable oil and having an IOB value of 0 to 0.45. Component (D): Water or Water and ethanol

In the oil-in-water emulsified composition, the content ratio of the surfactant other than the component (B) is preferably 0.1% by mass or less.

In the oil-in-water emulsification composition of the present invention, the surface of the component (A), which is a powder, is made hydrophobic with polyglyceryl-10 decaisostearate, so that the content ratio of the powder is adjusted in order to suppress oil floating. Since the white turbidity of the aqueous phase can be prevented at most, an oil-in-water emulsified composition having an excellent aesthetic appearance can be obtained.

The oil-in-water emulsified composition of the present invention comprises a group consisting of octenyl succinate starch ester metal salt, talc, nylon, polymethyl methacrylate, polymethylsilsesquioxane, and (vinyldimethicone / methiconesilsesquioxane) crosspolymer. One or more powders selected from; polyglyceryl-10 decaisostearate; one or more selected from the group consisting of silicone oils, hydrocarbon oils, ester oils, and vegetable oils, with an IOB value of 0-0. An oily component of 45; and water, or at least water and ethanol. In the present specification, it is selected from the group consisting of octenyl succinate starch ester metal salt, talc, nylon, polymethyl methacrylate, polymethylsilsesquioxane, and (vinyldimethicone / methiconesilsesquioxane) crosspolymer. One or more powders selected from the group consisting of "component (A)", polyglyceryl-10 decaisostearate "component (B)", silicone oil, hydrocarbon oil, ester oil, and vegetable oil. The oily component having an IOB value of 0 to 0.45 may be referred to as "component (C)", and water, or water and ethanol may be referred to as "component (D)".

That is, the oil-in-water emulsified composition of the present invention contains at least the component (A), the component (B), the component (C), and the component (D). The oil-in-water emulsified composition of the present invention may contain components other than the above components (A) to (D). In addition, each component contained in the oil-in-water emulsified composition of the present invention, for example, each component such as component (A), component (B), component (C), component (D), and other components, respectively. Only one type may be used, or two or more types may be used.

[Ingredient (A)]
Ingredient (A) is selected from the group consisting of octenyl succinate starch ester metal salt, talc, nylon, polymethylmethacrylate, polymethylsilsesquioxane, and (vinyldimethicone / methicone silsesquioxane) crosspolymer 1 It is a powder that is more than a seed. The component (A) is used in combination with the components (B) to (D) while exhibiting the effect of blending the powder in the cosmetic composition (such as giving a feeling of low friction to the skin after use). This makes it possible to form a pickering emulsion. Therefore, even if a surfactant other than the component (B) such as a nonionic surfactant or an anionic surfactant is not blended in the composition, it can be dispersed in a good dispersed state. As the component (A), only one kind may be used, or two or more kinds may be used.

Examples of the octenyl succinic acid starch ester metal salt include aluminum salt, calcium salt, barium salt, iron salt and the like of octenyl succinic acid starch ester. Of these, an aluminum salt (starch aluminum octenyl succinate) is preferable. The octenyl succinate starch aluminum may be referred to as octenyl succinate starch Al or octenyl succinate corn starch ester aluminum. Further, the above-mentioned starch aluminum octenyl succinate may be described as ALUMINUM STARCH OCTENYLSUCCINATE under the name of INCI (International Nomenclature for Cosmetic Ingredients).

In the oil-in-water emulsified composition of the present invention, the component (A) is a powder. The octenyl succinate starch ester metal salt is hydrophilized and gelled (so-called gelatinization and gelatinization) by heating to a relatively high temperature (for example, 60 ° C. or higher) and is no longer in a powder state, and can be used as a thickener. May be used. The oil-in-water emulsified composition of the present invention is characterized by being contained in a powder state. Therefore, in the process for producing the oil-in-water emulsified composition of the present invention, the octenyl succinic acid starch ester metal salt is preferably used at a temperature lower than 60 ° C (more preferably less than 55 ° C).

The talc is not particularly limited, and talc generally used in cosmetics can be used. The above talc is an INCI name and is written as TALC.

The oil absorption of the talc is not particularly limited, but is preferably 18 to 50 ml / 100 g. The average particle size D50 of the talc is not particularly limited, but is preferably 0.5 to 25.0 μm, more preferably 1.0 to 20.0 μm.

The nylon is not particularly limited, and examples thereof include nylon-6 (INCI name: NYLON-6) and nylon-12 (INCI name: NYLON-12). The average particle size D50 of the component (A) which is nylon is not particularly limited, but is preferably 0.5 to 40.0 μm, more preferably 1.0 to 20.0 μm, and further preferably 3.0 to 10.0 μm. Is.

The polymethylmethacrylate is referred to as POLYMETHYL METHACRYLATE by the INCI name. The average particle size D50 of the component (A) which is polymethyl methacrylate is not particularly limited, but is preferably 0.5 to 100 μm, and more preferably 1.0 to 60 μm.

The polymethylsilsesquioxane is referred to as POLYMETHYLSILSQUIOXANE by the INCI name.

The above (vinyldimethicone / methicone silsesquioxane) crosspolymer is described as Vinyl Dimethicone / Methicone Silesquioxane Crosspolymer by the INCI name.

The average particle size D50 of the component (A) which is a polymethylsilsesquioxane and the component (A) which is a (vinyldimethicone / methicone silsesquioxane) crosspolymer is not particularly limited, but 1.0 to 20. It is preferably 0 μm, more preferably 2.0 to 15.0 μm, and even more preferably 3.0 to 10.0 μm.

In the present specification, the average particle size D50 can be measured by a laser diffraction / scattering method. Specifically, for example, the measurement can be performed using a laser diffraction / scattering type particle size distribution measuring device (LA950V2 manufactured by HORIBA).

A commercially available product can also be used as the component (A). Commercially available products of the octenyl succinate starch ester metal salt include, for example, the trade name "DRY-FLO PURE (manufactured by Nouryon)", the trade name "DRY-FLO PC (manufactured by Nouryon)", and the trade name "Octier (Nichijo Kagaku)". (Made by Co., Ltd.) ”. Examples of commercially available talc products include the trade name "talc MS" (manufactured by Nippon Talc Co., Ltd.). Examples of commercially available nylon products include the trade name "Ganzpearl GPA-550 (manufactured by Aica Kogyo Co., Ltd.)" and the trade name "Orgasol (R) 2002 EXD NAT COS (manufactured by Arkema Co., Ltd.)". Examples of commercially available products of polymethyl methacrylate include "Microsphere M-330 (manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.)". Examples of commercially available products of polymethylsilsesquioxane include the product name "KMP-599 (manufactured by Shin-Etsu Chemical Industry Co., Ltd.)", the product name "KSP-300 (manufactured by Shin-Etsu Chemical Industry Co., Ltd.)", and the product name "X". -52-1621 (manufactured by Shin-Etsu Chemical Industry Co., Ltd.) ", product name" KMP-601 (manufactured by Shin-Etsu Chemical Industry Co., Ltd.) ", product name" KMP-598 (manufactured by Shin-Etsu Chemical Industry Co., Ltd.) ", product name" Tospearl Examples include "120A (manufactured by Momentive Performance Materials Japan)" and the product name "Tospearl 145A (manufactured by Momentive Performance Materials Japan)". (Vinyl dimethicone / methicone silsesquioxane) As commercially available cross-polymer products, for example, the product name "KSP-105 (manufactured by Shin-Etsu Chemical Co., Ltd.)" and the product name "KSP-100 (manufactured by Shin-Etsu Chemical Co., Ltd.)" , The product name "KSP-101 (manufactured by Shin-Etsu Chemical Co., Ltd.)" and the like.

The content ratio of the component (A) in the oil-in-water emulsified composition of the present invention is preferably 0.05 to 10.0% by mass with respect to 100% by mass of the oil-in-water emulsified composition of the present invention. , More preferably 1.0 to 5.0% by mass, still more preferably 2.0 to 4.0% by mass. When the content ratio is 0.05% by mass or more, the pickering emulsion is more easily formed. As a result, oil floating (an oily component not contained in the emulsion particles floats to form an oil phase on the surface layer of the composition) becomes more difficult to occur. When the content ratio is 10.0% by mass or less, the free component (A) that does not contribute to the emulsion particles is less likely to be generated, and the aqueous phase is less likely to become cloudy. The content ratio of the above component (A) is the total content ratio of all the components (A) in the oil-in-water emulsified composition of the present invention.

[Component (B)]
Ingredient (B) is polyglyceryl-10 decaisostearate (INCI name: Polyglyceryl-10 Decaisostaterate). The component (B) is an ester compound synthesized from a decamer of glycerin and 10 equivalents of isostearic acid, and has a hydrophilic moiety derived from 2 hydroxyl groups and 10 ester groups per molecule, and iso. It has a lipophilic moiety derived from a stearyl group. It is presumed that the component (B) adheres to the component (A) by the hydrophilic portion and enhances the hydrophobicity of the component (A) by the lipophilic portion. As a result, the liberation of the component (A) from the emulsion particles is reduced, and it is presumed that the white turbidity of the aqueous phase in the oil-in-water emulsified composition is suppressed.

The content ratio of the component (B) in the oil-in-water emulsified composition of the present invention is not particularly limited, but is 0.0005 to 1.0% by mass with respect to 100% by mass of the oil-in-water emulsified composition of the present invention. It is more preferably 0.001 to 0.5% by mass, and even more preferably 0.001 to 0.3% by mass. When the content ratio is 0.0005% by mass or more, the effect of suppressing white turbidity in the aqueous phase is further improved. When the content ratio is 1.0% by mass or less, the agglutination suppressing effect of the component (A) is further improved.

In the oil-in-water emulsified composition of the present invention, the mass ratio of the component (B) to the component (A) [component (B) / component (A)] is preferably 0.001 to 0.3. It is more preferably 0.005 to 0.25, still more preferably 0.005 to 0.15. When the mass ratio is 0.001 or more, the effect of suppressing white turbidity in the aqueous phase is further improved. When the content ratio is 0.3 or less, the agglutination suppressing effect of the component (A) is further improved.

[Component (C)]
The component (C) is one or more selected from the group consisting of silicone oil, hydrocarbon oil, ester oil, and vegetable oil, and is an oily component having an IOB value of 0 to 0.45. The component (C) is a low-polarity or non-polar oily component having a low IOB value, is difficult to dissolve in the component (D) in the presence of the component (D), and is pickled by the component (A) and the component (D). It exerts the action of forming an emulsion. As the component (C), only one kind may be used, or two or more kinds may be used.

The IOB value of the component (C) is 0 to 0.45, more preferably 0 to 0.35, and even more preferably 0 to 0.15. When the IOB value is within the above range, the component (D) is not completely dissolved in the component (D) in the presence of the component (D), and the component (A) and the component (D) form a pickering emulsion. Demonstrate. The IOB value is a value for each oily component contained in the oil-in-water emulsified composition of the present invention, and is a value for each oily component when two or more kinds of the component (C) are contained. The IOB (Inorganicity Organicity) value is a value obtained by dividing an inorganic value (Inorganicity) by an organic value (Organicity). The IOB value of each component (C) can be obtained based on, for example, Yoshio Koda, "Organic Conceptual Diagram-Basics and Applications-", Sankyo Publishing, 1984 (p11-17).

Examples of the silicone oil include dimethylsilicone oil such as dimethylpolysiloxane (dimethicone) and highly polymerized dimethylpolysiloxane; and methylphenylsilicone oil such as methylphenylpolysiloxane.

Examples of the hydrocarbon oil include isoparaffin, light isoparaffin, light liquid isoparaffin, squalane, synthetic squalane, vegetable squalane, liquid isoparaffin, liquid paraffin, hydrogenated polyisobutene and isododecane.

Examples of the ester oil include isopropyl myristate, isopropyl palmitate, myristyl myristate, cetyl palmitate, 2-ethylhexyl palmitate, octyldodecyl myristate, isopropyl isostearate, cetyl 2-ethylhexanoate, and tri2-ethyl. Examples thereof include glyceryl hexanoate, tri (caprylic acid / capric acid) glyceryl, isononyl isononanoate, diisopropyl adipate, pentaerythrityl tetraoctanoate, diisostearyl malate, dipentaerythrityl hexahydroxystearate and the like.

Examples of the vegetable oil include macadamia nut oil, olive oil, palm oil, shea butter, sunflower oil, jojoba oil, and argan oil.

The component (C) is preferably liquid at 25 ° C. The viscosity η of the component (C) measured at 25 ° C. using a Brookfield type rotational viscometer is preferably 30,000 mPa · s or less (for example, 0.1 to 30,000 mPa · s), and more preferably 1.0 to 10,000 mPa.・ S.

Ingredients (C) include liquid paraffin, squalane (including sugar squalane and olive squalane), light isoparaffin, glyceryl tri2-ethylhexanoate, cetyl 2-ethylhexanoate, dimethylpolysiloxane (dimethicone), and methylphenyl. Polysiloxane is preferred.

The content ratio of the component (C) in the oil-in-water emulsified composition of the present invention is not particularly limited, but is 0.01 to 15.0% by mass with respect to 100% by mass of the oil-in-water emulsified composition of the present invention. Is preferable, and more preferably 0.1 to 10.0% by mass. When the content ratio is 0.01% by mass or more, the pickering emulsion is more easily formed. When the content ratio is 15.0% by mass or less, oil floating can be further reduced and the aesthetic appearance can be further improved. The content ratio of the above component (C) is the total content ratio of all the components (C) in the oil-in-water emulsified composition of the present invention.

The mass ratio of the component (C) to the component (A) [component (C) / component (A)] in the oil-in-water emulsified composition of the present invention is preferably 0.05 to 10.0. More preferably, it is 0.1 to 5.0. When the mass ratio is 0.05 or more, the pickering emulsion is more easily formed. When the mass ratio is 10.0 or less, oil floating can be further reduced and the appearance can be further improved.

[Component (D): water, or water and ethanol]
The component (D) is water, or water and ethanol. In other words, the component (D) when the oil-in-water emulsification composition of the present invention does not contain ethanol is water, and the component (D) when the oil-in-water emulsification composition of the present invention contains ethanol is water and Ethanol. The water is not particularly limited, but purified water is preferable.

The component (D) is a component that forms the aqueous phase (matrix) of the oil-in-water pickering emulsion in the oil-in-water emulsification composition of the present invention. Ethanol is soluble in water and forms an aqueous phase with water. Further, the oil-in-water emulsified composition of the present invention is imparted with antiseptic properties and quick-drying properties after application.

The content ratio of water in the oil-in-water emulsified composition of the present invention is not particularly limited, but is preferably 0.5 to 96.0% by mass with respect to 100% by mass of the oil-in-water emulsified composition of the present invention. It is more preferably 4.0 to 96.0% by mass, and further preferably 10.0 to 95.0% by mass. When the content ratio is within the above range, an oil-in-water type pickering emulsion can be formed more stably.

When the component (D) contains ethanol, the polarity of the aqueous phase is lowered and the stability of the emulsion is further improved. Further, by using ethanol, it is possible to impart a quick-drying property and a refreshing feeling to the oil-in-water emulsified composition of the present invention.

The content of ethanol in the oil-in-water emulsifying composition of the present invention is preferably 0 to 95.0% by mass, more preferably 0 to 90% by mass, based on 100% by mass of the oil-in-water emulsifying composition of the present invention. It is preferably 0% by mass, more preferably 0.3 to 80.0% by mass, further preferably 15.0 to 70.0% by mass, and particularly preferably 30.0 to 60.0% by mass. When the content ratio is within the above range, a feeling of irritation and a feeling of dryness are unlikely to occur.

When the component (D) contains ethanol, the mass ratio of water to ethanol [water / ethanol] in the oil-in-water emulsified composition of the present invention is preferably 0.005 to 200.0, more preferably 0.005 to 200.0. Is 0.05 to 200.0, more preferably 0.1 to 30.0, and particularly preferably 0.3 to 4.0. When the mass ratio is within the above range, the pickering emulsion can be formed more stably, and a feeling of irritation and a feeling of dryness are less likely to occur.

The content ratio of the component (D) in the oil-in-water emulsified composition of the present invention is not particularly limited, but is 50.0 to 98.0% by mass with respect to 100% by mass of the oil-in-water emulsified composition of the present invention. Is preferable, and more preferably 60.0 to 95.0% by mass. When the content ratio is 50.0% by mass or more, oil floating can be further reduced and the aesthetic appearance can be further improved. When the content ratio is 98.0% by mass or less, the pickering emulsion is more easily formed.

From the viewpoint of the stability of the pickering emulsion, the oil-in-water emulsified composition of the present invention preferably contains only a small amount or substantially no surfactant other than the component (B). The content ratio of the surfactant other than the component (B) in the oil-in-water emulsified composition of the present invention is not particularly limited, but is 0.1 with respect to 100% by mass of the oil-in-water emulsified composition of the present invention. It is preferably mass% or less (for example, 0 to 0.1 mass%), more preferably 0.01 mass% or less, and particularly preferably 0 mass%. When the content ratio is 0.1% by mass or less, the formed oil-in-water type pickering emulsion can be present more stably. Further, when the oil-in-water emulsified composition of the present invention is used as a cosmetic composition, stickiness, sliminess and irritation to the skin at the time of application can be suppressed.

Examples of the surfactant include nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants. Examples of the nonionic surfactant include sorbitan fatty acid ester, glycerin fatty acid ester, and alkylene oxide adducts thereof, polyoxyalkylene alkyl ether, polyoxyalkylene fatty acid ester, polyoxyalkylene alkylphenol, and polyoxyethylene sorbit fatty acid ester. Polyoxyethylene alkylphenyl formaldehyde condensate, polyoxyethylene sterol and its derivatives, polyoxyethylene lanolin and its derivatives, polyoxyethylene beeswax derivatives, sugar esters, polyoxyethylene hydrogenated castor oil, polyoxyethylene castor oil, etc. Be done. Examples of anionic surfactants include higher fatty acid soaps, alkyl sulfates, alkyl phosphates, polyoxyethylene alkyl ether sulfates, polyoxyethylene alkyl phenyl ether sulfates, alkyl ether phosphates, and alkyl ether carboxylics. Acids, acylmethyltaurine salts, N-acyl-N-methyl-β-alanine salts, N-acylglycine salts, N-acylglutamates, polyoxyethylene alkylcarboxylates, alkylphenyl ether sulfonates, alkyl sulfosuccinates Acids and salts thereof, N-acylsarcosine and salts thereof, polyoxyethylene palm oil fatty acid monoethanolamide sulfate and the like can be mentioned. Examples of the cationic surfactant include amine salts such as alkylamine salts, fatty acid amidamine salts, and ester-containing tertiary amine salts, monoalkyl type quaternary ammonium salts, dialkyl type quaternary ammonium salts, and trialkyl type. Examples thereof include quaternary ammonium salts, alkyl quaternary ammonium salts such as benzalconium type quaternary ammonium salts, cyclic quaternary ammonium salts such as alkyl pyridinium salts, and benzethonium chloride. Examples of amphoteric surfactants include glycine-type amphoteric surfactants such as alkylglycin salts, carboxymethyl glycine salts, and N-acylaminoethyl-N-2-hydroxyethyl glycine salts, alkylaminopropionates, and alkyliminodipropionic acids. Aminopropionic acid type amphoteric surfactant such as salt, alkyldimethylaminoacetic acid betaine, aminoacetate betaine type amphoteric surfactant such as fatty acid amidepropyldimethylaminoacetic acid betaine, sulfobetaine type amphoteric surfactant such as alkylhydroxysulfobetaine, etc. Can be mentioned.

[Other ingredients]
The oil-in-water emulsified composition of the present invention may contain components (other components) other than the above-mentioned components as long as the object of the present invention is not impaired. The above other components are not particularly limited, but for example, lower alcohols other than ethanol; oily components other than the component (C) such as fats and oils and waxes; thickeners such as hydroxymethyl cellulose, hydroxypropyl methyl cellulose and xanthan gum; moisturizing. Agents; pearlizing agents; anti-inflammatory agents such as glycyrrhizic acid and its salts; antiperspirants; bactericides; refreshing agents; phosphoric acid and its salts, citric acid and its salts, lactic acid and its salts, sodium hydroxide, triethanol PH adjusters such as amines; fragrances; UV absorbers; antioxidants; metal ion sequestering agents (chelating agents); film-forming polymer compounds such as pyrivinylpyrrolidone; pigments; pigments; vitamins; amino acids; astringents Whitening agents; animal and plant extracts; acids; alkalis and the like.

Examples of the antiperspirant include aluminum chloride, potassium aluminum sulfate, aluminum sulfate, aluminum acetate, chlorohydroxyaluminum, allantoinchlorohydroxyaluminum, zinc paraphenolsulfonate and the like.

Examples of the above-mentioned bactericidal agent include isopropylmethylphenol, benzalkonium chloride, benzethonium chloride, chlorhexidine hydrochloride, phenol, trichlorocarbanilide, chlorhexidine gluconate, triclosan, triclocarban, piroctone olamine, zincpyrythion, salicylic acid, and sorbic acid. , Chlorhexidine, etc.

Examples of the refreshing agent include menthol, menthyl glyceryl ether, menthyl lactate, camphor, and icillin.

The dosage form of the oil-in-water emulsified composition of the present invention is not particularly limited, and examples thereof include lotions, sheets, and roll-ons. The oil-in-water emulsified composition of the present invention has a good appearance and is therefore preferably used as a lotion or roll-on dosage form.

Examples of the oil-in-water emulsifying composition of the present invention include a body odor suppressant (deodorant), a refreshing cosmetic, a lotion, a hair cosmetic, a shaving cosmetic, and a wipe-off cosmetic (sheet cosmetic). Since the oil-in-water emulsified composition of the present invention can be used in a cosmetic composition containing powder and containing a large amount of ethanol, a deodorant agent (a deodorant used for the purpose of suppressing body odor) is preferable. , A refreshing cosmetic.

Examples of the application portion when the oil-in-water emulsified composition of the present invention is applied to the body include armpits, arms, feet, soles, neck, chest, trunk, buttocks, face, and hair.

The oil-in-water emulsified composition of the present invention is not particularly limited and can be produced by a known or conventional method. For example, a method of mixing each of the above components and stirring using a known stirring device such as a dispenser mixer or a paddle mixer to homogenize each component can be mentioned.

The oil-in-water emulsified composition of the present invention is one or more selected from the group consisting of silicone oil, hydrocarbon oil, ester oil, and vegetable oil, and has an IOB value of 0 to 0.45. In C)], polyglyceryl decisostearate-10 [component (B)], octenyl succinate starch ester metal salt, talc, nylon, polymethyl methacrylate, polymethylsilsesquioxane, and (vinyl dimethicone / methicone). It contains one or more powders [component (A)] selected from the group consisting of (silsesquioxane) crosspolymer. Since the surface of the component (A) is sufficiently hydrophobized by the component (B), it is further transferred to the aqueous phase in a pickering emulsion formed by further containing water or water and ethanol [component (D)]. The release of the component (A) of is reduced. Therefore, the oil-in-water emulsified composition of the present invention is less likely to become cloudy and has an excellent aesthetic appearance.

Hereinafter, the present invention will be described in more detail based on Examples, but the present invention is not limited to these Examples. The content ratio shown in the table is the content ratio of each component (that is, the content ratio of the active ingredient in each raw material, so-called pure content), and is represented by "mass%" unless otherwise specified.

Examples 1 to 21, Comparative Examples 1 to 5
Using each component (components (A) to (D), etc.) shown in Tables 1 and 2, each oil-in-water emulsified composition of Examples and Comparative Examples was prepared by a conventional method. The IOB value of the oily component was 0 for liquid paraffin, 0 for squalane, 0.36 for glyceryl tri2-ethylhexanoate, 0.13 for cetyl 2-ethylhexanoate, and 0.28 for methylphenylpolysiloxane. be.

(evaluation)
Each oil-in-water emulsified composition obtained in Examples and Comparative Examples was evaluated as follows. The evaluation results are shown in the table.

(1) Presence or absence of cloudiness About 40 ml of each oil-in-water emulsified composition obtained in Examples and Comparative Examples was filled in a screw tube (transparent, capacity 50 ml), allowed to stand at room temperature for 30 minutes, and then visually in water. The oil-type emulsified composition was observed, and the presence or absence of cloudiness was judged according to the following evaluation criteria. The results are shown in Tables 1 and 2.
[Criteria for determining the presence or absence of cloudiness]
○ (Good): The upper layer is transparent or clear.
× (defective): The upper layer is cloudy.

(2) Oil floating Approximately 40 ml of each oil-in-water emulsified composition obtained in Examples and Comparative Examples was filled in a screw tube (transparent, capacity 50 ml), allowed to stand at room temperature for 30 minutes, and then visually oiled in water. The mold emulsified composition was observed, and the oil floating was judged by the following evaluation criteria. The results are shown in Tables 1 and 2.
[Criteria for judging oil floating]
○ (Good): Oil is not floating.
× (defective): Oil is floating.

As shown in Tables 1 and 2, the oil-in-water emulsified composition of the present invention formed a pickering emulsion, did not cause oil floating, and was excellent in white turbidity (Examples 1 to 1). 21). On the other hand, when silica was used without using the component (A) as the powder (Comparative Example 1), oil floating did not occur, but the white turbidity was inferior. Further, when the component (B) was not blended (Comparative Example 2), oil floating did not occur, but the degree of white turbidity was inferior. Further, when polyglyceryl monolaurate or polyglyceryl monostearate was used without using the component (B) (Comparative Examples 3 and 4), oil floating did not occur, but the degree of white turbidity was inferior. Further, when the component (C) was not blended (Comparative Example 5), the pickering emulsion was not formed.

Examples 22-25, Comparative Examples 6-9
Using each component (components (A) to (D)) shown in Table 3, each oil-in-water emulsified composition of Examples and Comparative Examples was prepared by a conventional method. Comparative Examples 6, 7, 8 and 9 are the same as those of Examples 22, 23, 24 and 25, respectively, except that the component (B) is not contained.

(evaluation)
Each oil-in-water emulsified composition obtained in Examples and Comparative Examples was evaluated as follows. In each of the oil-in-water emulsified compositions obtained in Examples and Comparative Examples, a pickering emulsion was formed.

(3) Degree of white turbidity Approximately 40 ml of each oil-in-water emulsified composition obtained in Examples and Comparative Examples was filled in a screw tube (transparent, capacity 50 ml), allowed to stand at room temperature for 30 minutes, and then visually in water. The oil-type emulsified composition was observed.
The white turbidity of Example 22, Comparative Example 6, Example 23 and Comparative Example 7, Example 24 and Comparative Example 8, and Example 25 and Comparative Example 9 were compared.
As a result, the degree of cloudiness was stronger in the comparative example, and the aesthetic appearance was better in the example.

(4) Oil floating Approximately 40 ml of each oil-in-water emulsified composition obtained in Examples and Comparative Examples was filled in a screw tube (transparent, capacity 50 ml), allowed to stand at room temperature for 30 minutes, and then visually oiled in water. The mold emulsified composition was observed.
As a result, no oil floated in either of the examples and the comparative examples, and no oil floating was observed.

Further, a formulation example of the oil-in-water emulsified composition of the present invention is shown below.
Prescription Example 1 Deodorant Mist Ethanol 50.0% by mass
Squalene 0.15% by mass
Starch octenyl succinate Al 1.5% by mass
Polyglyceryl decaisostearate-10 0.07% by mass
Isopropylmethylphenol 0.2% by mass
Zinc Phenol Sulfonate 0.5% by mass
Mentoxipropanediol 0.1% by mass
Menthol 0.6% by mass
Fragrance 0.2% by mass
Total water balance 100.0% by mass

Prescription Example 2 Deodorant Roll-on Ethanol 70.0% by mass
Liquid paraffin 0.5% by mass
Starch octenyl succinate Al 5.0% by mass
Polyglyceryl decaisostearate-10 0.1% by mass
Triclosan 0.1% by mass
Chlorhydroxyaluminum 5.0% by mass
Hydroxypropyl cellulose 0.5% by mass
Menthol 0.3% by mass
Fragrance 0.15% by mass
Total water balance 100.0% by mass

Formulation Example 3 Sheet cosmetics 1 g of a non-woven fabric was impregnated with 4 g of a wiping sheet composition having the following composition to obtain a wiping sheet oil-in-water emulsified composition.
(Wipe sheet composition)
Ethanol 40.0% by mass
Isononyl isononanoate 0.8% by mass
Talc 10.0% by mass
Polyglyceryl decaisostearate-10 0.1% by mass
Menthol 0.6% by mass
Fragrance 0.1% by mass
Total water balance 100.0% by mass

Prescription Example 4 Shaving Lotion Ethanol 75.0% by Mass
Squalene 0.5% by mass
Starch octenyl succinate Al 8.0% by mass
Polyglyceryl decaisostearate-10 0.1% by mass
Menthol 0.1% by mass
Fragrance 0.1% by mass
Total water balance 100.0% by mass

Prescription Example 5 Hair Cosmetic Ethanol 30.0% by Mass
Light Isoparaffin 1.0% by Mass
Starch octenyl succinate Al 8.0% by mass
Polyglyceryl decaisostearate-10 0.1% by mass
Fragrance 0.3% by mass
Panthenol 1.0% by mass
Total water balance 100.0% by mass

Claims (2)

An oil-in-water emulsified composition containing the following component (A), the following component (B), the following component (C), and the following component (D).
Ingredient (A): One selected from the group consisting of octenyl succinate starch ester metal salt, talc, nylon, polymethyl methacrylate, polymethylsilsesquioxane, and (vinyldimethicone / methiconesilsesquioxane) crosspolymer. The above powder component (B): Polyglyceryl decisostearate-10
Component (C): An oily component selected from the group consisting of silicone oil, hydrocarbon oil, ester oil, and vegetable oil and having an IOB value of 0 to 0.45. Component (D): Water or Water and ethanol The oil-in-water emulsified composition according to claim 1, wherein the content ratio of the surfactant other than the component (B) is 0.1% by mass or less.