JP2017105856A - Emulsion composition and cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an emulsion composition containing a functional oily component and vitamin E and having excellent emulsion stability.SOLUTION: There is provided an emulsion composition which comprises a functional oily component, vitamin E, an acylglutamic acid ester represented by the following general formula (1) and a polyhydric alcohol in which the content to the total mass of the emulsion composition is 30 to 50 mass%, wherein the functional oily component is at least one selected from the group consisting of a glycyrrhetinic acid derivative, fat-soluble vitamins other than vitamin E and carotenoids. (In the general formula (1), Rrepresents an alkyl group having 8 to 22 carbon atoms, an alkenyl group having 8 to 22 carbon atoms or an alkynyl group having 8 to 22 carbon atoms and Rand Reach independently represent an alkyl group having 8 to 30 carbon atoms, an alkenyl group having 8 to 30 carbon atoms or a sterol group.SELECTED DRAWING: None

Description

  The present invention relates to an emulsified composition and a cosmetic.

In recent years, various functional oil components have been blended into cosmetics and the like. In general, functional oily components are often blended in emulsions or creams in which oil is blended due to their properties.
On the other hand, as a method of blending a functional oil component into an aqueous composition such as lotion, a method of solubilizing the functional oil component with a surfactant, or an oil phase component using a large amount of an oil agent or an emulsifier The method of mix | blending in an emulsion composition etc. are mentioned.

  Patent Documents 1 to 3 describe a method for preparing an oil-in-water emulsion composition. As an emulsification technique using a surfactant, Patent Document 4 discloses an emulsified dispersion obtained by combining an alkylated polysaccharide with a phospholipid and an ionic surfactant.

However, in the preparation method of the emulsion composition described in Patent Literatures 1 to 3, there is a concern that a high concentration of functional oil component cannot be blended. Moreover, in the emulsification technique described in Patent Document 4, it is necessary to use an ionic surfactant, but the emulsion composition obtained using the ionic surfactant is skin irritation when applied to cosmetics and the like. There is a concern to show.
Therefore, when using a surfactant to solubilize the functional oily component, it is necessary to limit the type and amount of the surfactant in consideration of irritation to the skin. When the type and blending amount of the surfactant are limited, the type and blending amount of the oil, the fragrance, or the functional oil component blended in the emulsion composition may be limited accordingly.
In addition, transparency is often required for an emulsion composition applied to cosmetics. However, when emulsified particles are included in the emulsified composition, light is scattered depending on factors such as the average particle diameter of the emulsified particles or the content of the oil agent, so that the emulsion composition becomes turbid and transparent. May be undesirably impaired in appearance.

Japanese Patent No. 5134197 Japanese Patent No. 2831800 JP-A-9-169618 Japanese Patent No. 4524098

  Under such circumstances, it has been desired to develop an emulsified composition capable of realizing long-term emulsification stability while containing a functional oil component at a high concentration.

  An object of the present invention is to provide an emulsified composition containing a functional oily component and vitamin E and having excellent emulsion stability and a cosmetic containing the emulsified composition.

In an emulsified composition, in order to reduce turbidity and suppress the content of the oil or surfactant in the cosmetic when applied to the cosmetic, it is necessary to add a functional oil component at a high concentration. desirable.
In addition, a large amount of vitamin E may be used in order to sufficiently dissolve a high concentration of functional oily component. When an emulsion composition containing a large amount of vitamin E is assumed to be blended into a cosmetic or the like, it is preferable to blend a large amount of phospholipid or the like into the emulsion composition in order to improve salt resistance.
It became clear that the problem that the emulsification stability of an emulsified composition is impaired occurs by increasing the concentration of vitamin E or phospholipid contained in the emulsified composition.

Means for solving the problems include the following embodiments.
[1] Functional oily component, vitamin E, acyl glutamate represented by the following general formula (1), and polyvalent content of 30 to 50% by mass with respect to the total mass of the emulsion composition An emulsified composition comprising at least one alcohol selected from the group consisting of glycyrrhetinic acid derivatives, fat-soluble vitamins other than vitamin E, and carotenoids.

(In General Formula (1), R ¹ represents an alkyl group having 8 to 22 carbon atoms, an alkenyl group having 8 to 22 carbon atoms, or an alkynyl group having 8 to 22 carbon atoms, and R ² and R ³ are Independently, it represents an alkyl group having 8 to 30 carbon atoms, an alkenyl group having 8 to 30 carbon atoms, or a sterol group.)
[2] The emulsion composition according to [1], wherein the vitamin E includes at least one selected from the group consisting of tocopherol and a derivative thereof, and tocotrienol and a derivative thereof.
[3] The emulsion composition according to [1] or [2], wherein the acyl glutamate represented by the general formula (1) is an acyl glutamate represented by the following general formula (2).

(In General Formula (2), R ¹ ′ represents an alkyl group having 12 to 18 carbon atoms, an alkenyl group having 12 to 18 carbon atoms, or an alkynyl group having 12 to 18 carbon atoms, and R ² ′ and R ³ ′ Are each independently an alkyl group having 12 to 24 carbon atoms, an alkenyl group having 12 to 24 carbon atoms, or a sterol group.)
[4] The emulsified composition according to any one of [1] to [3], further comprising a polyglycerol fatty acid ester.
[5] The emulsion composition according to [4], wherein the content of the polyglycerol fatty acid ester is 0.5% by mass to 30% by mass with respect to the total mass of the emulsion composition.
[6] The acyl glutamate ester represented by the general formula (1) is dihexyldecyl lauroyl glutamate, diisostearyl lauroyl glutamate, bis (hexyldecyl / octyldodecyl) lauroyl glutamate, dioctyldecyl lauroyl glutamate, dilauroyl glutamate / cholesteryl / Octyldodecyl), dilauroylglutamate (cholesteryl / behenyl / octyldodecyl), dilauroylglutamate (phytosteryl / octyldodecyl), dilauroylglutamate (octyldodecyl / phytosteryl / behenyl), lauroylglutamate (phytosteryl / stedecyl / stenyl) ) And stearoyl dioctyldodecyl glutamate The emulsified composition according to any one of [1] to [5], which is at least one kind.
[7] The emulsion composition according to any one of [1] to [6], wherein the polyhydric alcohol includes glycerin.
[8] The emulsified composition according to any one of [1] to [7], which contains 5 mass% or more and less than 25 mass% of vitamin E with respect to the total mass of the emulsified composition.
[9] The emulsified composition according to any one of [1] to [8], wherein the functional oily component is an oil-soluble component that is dissolved in vitamin E by 0.5% by mass or more at 25 ° C.
[10] A cosmetic comprising the emulsified composition according to any one of [1] to [9].
[11] The cosmetic according to [10], further comprising a phospholipid.
[12] The cosmetic according to [10] or [11], wherein the vitamin E is contained in an amount of 0.001% by mass to 1.0% by mass with respect to the total mass of the cosmetic.

  According to the present invention, since it contains a functional oily component, vitamin Es, and an acyl glutamic acid ester represented by the general formula described later, the emulsion composition is excellent in emulsion stability and contains an emulsion composition. Can be provided.

It is the graph shown about stability of the emulsion composition concerning Table 3.

Hereinafter, the present invention will be described in detail.
In addition, the numerical value range shown using "to" in this specification shows the range which includes the numerical value described before and behind "to" as a minimum value and a maximum value, respectively.
In this specification, “aqueous phase” is used as a term for “oil phase” regardless of the type of solvent.
In this specification, the term “process” is not limited to an independent process, and is included in the term if the intended purpose of this process is achieved even when it cannot be clearly distinguished from other processes. .
In this specification, the amount of each component in the composition is the sum of the plurality of substances present in the composition unless there is a specific indication when there are a plurality of substances corresponding to each component in the composition. Means quantity.

[Emulsified composition]
The emulsified composition of the present invention is a cosmetic containing a functional oily component, vitamin E, and an acyl glutamate represented by the following general formula (1).

In General Formula (1), R ¹ represents an alkyl group having 8 to 22 carbon atoms, an alkenyl group having 8 to 22 carbon atoms, or an alkynyl group having 8 to 22 carbon atoms, and R ² and R ³ are independent of each other. And an alkyl group having 8 to 30 carbon atoms, an alkenyl group having 8 to 30 carbon atoms, or a sterol group.

  The emulsion composition of the present invention is excellent in emulsion stability by having the above-described configuration. Moreover, the emulsion composition of this invention is excellent in transparency, and is excellent in temporal stability and its sustainability. Furthermore, the emulsion composition of the present invention can maintain the effect expected of the functional oil component over a long period of time.

The emulsion composition of the present invention is not particularly limited, but is preferably an oil-in-water emulsion composition.
The essential components and optional components contained in the emulsion composition of the present invention will be described in detail.

<Functional oil component>
The emulsified composition of the present invention contains a functional oil component.
The functional oily component is an oily component that can exhibit a desired function for a living body.
The functional oily component is an oily component that can exhibit a desired function for a living body and is dissolved in vitamin E, which will be described later, at 0.5% by mass (100% by mass or less) at 25 ° C. It is preferable. Specifically, the functional oil component includes at least one selected from the group consisting of glycyrrhetinic acid derivatives, fat-soluble vitamins other than vitamin E, and carotenoids.

Examples of the glycyrrhetinic acid derivative include glycyrrhetinic acid, stearyl glycyrrhetinate, pyridoxine glycyrrhetinate and the like. Among them, stearyl glycyrrhetinate and glycyrrhetinic acid are preferable, and stearyl glycyrrhetinate is more preferable.
Stearyl glycyrrhetinate is a CAS No. It is a compound of 13832-70-7, which is a fat-soluble substance and a compound with low compatibility with general oil agents.
Stearyl glycyrrhetinate has been conventionally used as an anti-inflammatory or antiallergic agent in soaps, creams, emulsions, etc., but is applied to highly transparent emulsified compositions because of its low solubility in aqueous compositions. There was hardly anything.

  The method for producing stearyl glycyrrhetinate is not particularly limited. For example, glycyrrhizic acid extracted from licorice can be obtained by hydrolysis to produce glycyrrhetinic acid, followed by esterification with stearyl alcohol. .

  Examples of the fat-soluble vitamins include vitamin A such as retinol, retinol palmitate or retinol acetate, and vitamin D such as ergocalciferol or cholecalciferol.

Examples of carotenoids include astaxanthin, lycopene, fucoxanthin and the like.
Astaxanthin is contained in Haematococcus prubiaris oil, krill extract and the like. Astaxanthin may be an extract that is separated and extracted from these natural products. Moreover, astaxanthin may be a product obtained by appropriately purifying the extract as necessary, or a synthetic product.

  Lycopene is contained in tomatoes, strawberries, watermelons or pink grapefruits. Lycopene may be an extract that is extracted separately from these natural products. The lycopene may be an extract, a product obtained by appropriately purifying the extract as necessary, or a synthetic product.

  Fucoxanthin is contained in brown algae or other unequal hairy algae. Fucoxanthin may be an extract that is separated and extracted from these natural products. In addition, fucoxanthin may be an extract or a product obtained by appropriately purifying the extract as necessary.

  As for the functional oil component, any one kind may be used alone, or two or more kinds may be used in combination.

The functional oily component of the present invention may be liquid or solid at 25 ° C., but in the case of a solid, it is present in the emulsion composition in a state dissolved or melted in the oil (hereinafter referred to as dissolution). Is preferred.
Examples of the oil used for dissolving the functional oil component include vitamin E.

The solubility (25 ° C., normal pressure) of the functional oil component in vitamin E can be specifically confirmed by the following method. In addition, when confirming the solubility of the functional oil component in vitamin E, vitamin E is not particularly limited, but tocopherol (Riken Vitamin Co., Ltd., Riken Oil 800) is preferably used.
In a glass vial, vitamin Es and the functional oil component are weighed so that the functional oil component is 0.5% by mass. Thereafter, vitamin E containing 0.5% by mass of a functional oil component is appropriately heated to 70 to 120 ° C. to completely dissolve the functional oil component. Thereafter, the mixture is allowed to stand overnight at 25 ° C. and normal pressure, and the presence or absence of a precipitate derived from the functional oil component is observed. When the precipitate is not visually confirmed, it can be determined that the functional oily component has solubility in vitamin E that can be suitably used in the emulsion composition.

  The content of the functional oily component is preferably 0.001% by mass or more and less than 15% by mass, and preferably 0.01% by mass or more and less than 15% by mass with respect to the total mass of the emulsion composition. 0.03 mass% or more and less than 15 mass% is more preferable.

  When the content of the functional oil component in the emulsion composition is in the above range, high transparency can be stably maintained over a long period of time while containing the functional oil component in a high concentration. . In addition, when the highly transparent emulsion composition of the present invention is applied to a cosmetic that is one of its preferred uses, it contains excellent functional oil components at a high concentration, but has excellent stability over time. Can get.

<Vitamin E>
The emulsified composition of the present invention contains vitamin Es.
Thereby, it becomes possible to mix | blend a high concentration functional oil component in an emulsion composition.

  Although it does not restrict | limit especially as vitamin E class, Since it can melt | dissolve a high concentration functional oily component, at least selected from the group which consists of tocopherol and its derivative (s), and tocotrienol and its derivative (s). One is preferred.

<< Tocopherol and its derivatives >>
Tocopherol and its derivatives mean tocopherol and derivatives having the basic skeleton as tocopherol.
Specific examples of the tocopherol include α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol, and mixtures thereof.
Examples of tocopherol derivatives include tocopherol acetate, tocopherol succinate, tocopherol nicotinate, tocopherol linoleate or (linol / olein) acid tocopherol in which the OH group of tocopherol is modified with a fatty acid.

The origin of tocopherol is not particularly limited, and may specifically be sunflower, corn, olive, rapeseed, soybean, peanut or almond. Commercial products can be used for tocopherol and its derivatives. Commercially available products include Riken E Oil 800 (trade name, Riken Vitamin), Vitamin E Eisai (trade name, Eisai Food Chemical), Gamma Bright 90 (trade name, Eisai Food Chemical, Emix D (trade name, Eisai Food Chemical Co., Ltd.).
Any kind of tocopherols may be used alone, or two or more kinds may be used in combination.

<< Tocotrienol and its derivatives >>
Tocotrienol and its derivatives mean tocotrienol and derivatives having the basic skeleton as tocotrienol.
Specific examples of tocotrienol include α-tocotrienol, β-tocotrienol, γ-tocotrienol, δ-tocotrienol, and mixtures thereof.

The origin of tocotrienol and its derivatives is not particularly limited, and specifically, it may be sunflower, corn, olive, rapeseed, soybean, peanut or almond. Commercial products can be used for tocotrienol and its derivatives. As a commercially available product, Tocolit 92 (trade name, Eisai Food Chemical Co., Ltd.) and the like can be mentioned.
Tocotrienol and its derivatives may be used alone or in combination of two or more.

  As for vitamin E, any one kind may be used alone, or two or more kinds may be used in combination.

  The content of vitamin E is preferably 0.5% by mass or more and less than 35% by mass, more preferably 5% by mass or more and less than 25% by mass, based on the total mass of the emulsion composition. More preferably, it is 5 mass% or more and less than 20 mass%.

<Acyl glutamate>
The emulsified composition of the present invention contains an acyl glutamate represented by the following general formula (1) (hereinafter also referred to as “specific acyl glutamate”).

In General Formula (1), R ¹ represents an alkyl group having 8 to 22 carbon atoms, an alkenyl group having 8 to 22 carbon atoms, or an alkynyl group having 8 to 22 carbon atoms, and R ² and R ³ are independent of each other. And an alkyl group having 8 to 30 carbon atoms, an alkenyl group having 8 to 30 carbon atoms, or a sterol group.

  Since the emulsion composition of the present invention contains a specific acyl glutamate, the emulsion stability of the emulsion composition containing a functional oil component and vitamin E can be improved. This is presumed to be because the specific acyl glutamate ester can increase the solubility of the functional oil component and reduce the viscosity of the emulsion composition.

In the general formula (1), R ¹ represents an alkyl group having 8 to 22 carbon atoms, an alkenyl group having 8 to 22 carbon atoms, or an alkynyl group having 8 to 22 carbon atoms.

As the alkyl group for R ^1, an alkyl group having 10 to 22 carbon atoms is preferable, and an alkyl group having 12 to 18 carbon atoms is more preferable.
The alkenyl group for R ¹ is preferably an alkenyl group having 10 to 22 carbon atoms, and more preferably an alkenyl group having 12 to 18 carbon atoms.
The alkynyl group for R ¹ is preferably an alkynyl group having 10 to 22 carbon atoms, and more preferably an alkynyl group having 12 to 18 carbon atoms.
The alkyl group, alkenyl group and alkynyl group may be linear or branched. Further, the alkyl group, alkenyl group and alkynyl group may be unsubstituted or substituted with a substituent.

Specific examples of the alkyl group for R ¹ include a lauryl group, a myristyl group, a palmitoyl group, a stearyl group, and an isostearyl group.
Specific examples of the alkenyl group for R ¹ include an oleyl group, a linole group, and a linolenic group.
Specific examples of the alkynyl group for R ¹ include a dodecynyl group, a tridecynyl group, an eicosinyl group, and the like.

In the general formula (1), R ² and R ³ each independently represent an alkyl group having 8 to 30 carbon atoms, an alkenyl group having 8 to 30 carbon atoms, or a sterol group.

As the alkyl group for R ² and R ^3, an alkyl group having 12 to 24 carbon atoms is preferable, and an alkyl group having 14 to 22 carbon atoms is more preferable.
The alkenyl group for R ² and R ³ is preferably an alkenyl group having 12 to 24 carbon atoms, and more preferably an alkenyl group having 14 to 22 carbon atoms.
Examples of the sterol group in R ² and R ³ include phytosteryl group, sitosteryl group, campesteryl group, stigmasteryl group, brassicasteryl group, ergosteryl group, lanosteryl group, cholesteryl group, cycloartanyl group, cycloartenyl group and the like. A phytosteryl group, a sitosteryl group, a campesteryl group, a stigmasteryl group, a brassasteryl group, and a cholesteryl group are more preferable.
The alkyl group and alkenyl group may be linear or branched. Further, the alkyl group, alkenyl group, and sterol group may be unsubstituted or substituted with a substituent.

Specific examples of the alkyl group for R ² include lauryl, myristyl, palmitoyl, stearyl, isostearyl, butyldodecyl, hexyldecyl, hexyldecyl, octyldecyl, octyldecyl, octyl A tetradecyl group, a decyl dodecyl group, a decyl tetradecyl group, etc. are mentioned.
Specific examples of the alkenyl group for R ² include an oleyl group, a linole group, and a linolenic group.

Specific examples of the alkyl group in R ³ include lauryl group, myristyl group, palmitoyl group, stearyl group, isostearyl group, butyldodecyl group, hexyldecyl group, hexyldecyl group, octyldecyl group, octyldodecyl group, octyl group A tetradecyl group, a decyl dodecyl group, a decyl tetradecyl group, etc. are mentioned.
Specific examples of the alkenyl group for R ³ include an oleyl group, a linole group, and a linolenic group.

  As the acyl glutamate represented by the general formula (1), an acyl glutamate represented by the following formula (2) is preferable.

In General Formula (2), R ¹ ′ represents an alkyl group having 12 to 18 carbon atoms, an alkenyl group having 12 to 18 carbon atoms, or an alkynyl group having 12 to 18 carbon atoms, and R ² ′ and R ³ ′ are Independently of each other, it represents an alkyl group having 12 to 24 carbon atoms, an alkenyl group having 12 to 24 carbon atoms, or a sterol group.

Furthermore, as acyl glutamate, R ¹ represents an alkyl group having 12 to 18 carbon atoms, R ² represents an alkyl group having 14 to 22 carbon atoms or an alkenyl group having 14 to 22 carbon atoms, and R ³ represents a carbon number. It preferably represents an alkyl group having 14 to 22 or an alkenyl group having 14 to 22 carbon atoms.

  Acylglutamate esters include dihexyldecyl lauroyl glutamate, diisostearyl lauroyl glutamate, bis (hexyldecyl / octyldodecyl) lauroylglutamate, dioctyldodecyl lauroylglutamate, di (cholesteryl / octyldodecyl) lauroylglutamate, / Octyldodecyl), dilauroyl glutamate (phytosteryl / octyldodecyl), dilauroglutamate (octyldodecyl / phytosteryl / behenyl), lauroylglutamate (phytosteryl / behenyl / octyldodecyl / isostearyl) and preferred stearoyl glutadecyl dioctyl dodecydecylate.

  As the acyl glutamate, from the viewpoint of emulsion stability of the emulsion composition, dihexyldecyl lauroyl glutamate, diisostearyl lauroyl glutamate, bis (hexyldecyl / octyldodecyl) lauroyl glutamate, dioctyl dodecyl lauroyl glutamate, and stearoyl glutamic acid Dioctyldecyl is more preferred.

  Any one kind of acyl glutamate ester may be used alone, or two or more kinds thereof may be used in combination.

The content of acyl glutamate is preferably (0.001% by mass or more) less than 15% by mass and (0.01% by mass or more) less than 10% by mass with respect to the total mass of the emulsion composition. It is more preferable that the content is (0.1% by mass or more) less than 7.5% by mass.
Further, the ratio of acyl glutamate content (II) to the content (I) of vitamin E (acyl glutamate (II) / vitamin E (I)) is preferably 0.6 or less. . When the ratio (acyl glutamate (II) / vitamin E (I)) of acyl glutamate content (II) to vitamin E content (I) is 0.6 or less, acyl Compared to an emulsion composition not containing a glutamate ester (Comparative Example), an emulsion composition containing an acyl glutamate ester has a greater effect of improving the emulsion stability, which is preferable.
Further, the ratio of the content of acyl glutamate to the content of vitamin E is more preferably 0.3 or less.

<Polyglycerin fatty acid ester>
The emulsified composition of the present invention preferably further contains a polyglycerol fatty acid ester. Thereby, the interfacial tension generated between the oil phase and the water phase can be lowered. Moreover, when an emulsified particle is contained in an emulsified composition, it is estimated that the average particle diameter of an emulsified particle can be made fine.

  The polyglycerin fatty acid ester is not necessarily highly purified by distillation or the like, and may be a reaction mixture.

  The polyglycerin fatty acid ester is an ester of a polyglycerin having an average degree of polymerization of 2 or more, preferably 6 to 15, more preferably 8 to 10, and a fatty acid having 8 to 18 carbon atoms. For example, an ester of polyglycerin having an average degree of polymerization of 8 to 10 and caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, or linoleic acid can be used.

Moreover, as for polyglycerol fatty acid ester, HLB11-15 is more preferable from a viewpoint of emulsification power.
Here, HLB is a hydrophilic-hydrophobic balance that is usually used in the field of surfactants, and a commonly used calculation formula such as the Kawakami formula can be used. Kawakami's formula is shown below.
HLB = 7 + 11.7 log (M _w / M _O )
Here, M _w molecular weight of the hydrophilic groups, M _O is the molecular weight of the hydrophobic group.
Moreover, you may use the numerical value of HLB described in the catalog etc.
Further, as can be seen from the above formula, an emulsifier having an arbitrary HLB value can be obtained by utilizing the additivity of HLB.

Preferred examples of polyglycerol fatty acid esters include hexaglycerol monooleate, hexaglycerol monostearate, hexaglycerol monopalmitate, hexaglycerol monomyristate, hexaglycerol monolaurate, decaglycerol monooleate , Decaglycerin monostearic acid ester, decaglycerin monopalmitic acid ester, decaglycerin monomyristic acid ester, decaglycerin monolauric acid ester and the like.
Among these, more preferred are decaglycerin monooleate, decaglycerin monostearate, decaglycerin monopalmitate, decaglycerin monomyristate, decaglycerin monolaurate, and the like.

  Moreover, as a polyglycerol fatty acid ester, you may use a commercial item. Examples of commercially available products include polyglyceryl isostearate-10 (HLB = 12) (manufactured by Nikko Chemical), polyglyceryl-10 oleate (HLB = 12) (manufactured by Nikko Chemical), polyglyceryl-10 myristate (HLB = 14), Examples thereof include polyglyceryl stearate-10 (HLB = 12), polyglyceryl myristate-6 (HLB = 11), and the like.

  Any one kind of polyglycerin fatty acid ester may be used alone, or two or more kinds may be used in combination.

The content of the polyglycerin fatty acid ester is preferably 0.5% by mass to 30% by mass, more preferably 1% by mass to 20% by mass, and more preferably 2% by mass to 15% by mass with respect to the total mass of the emulsion composition. Further preferred.
By making the polyglycerin fatty acid ester 0.5% by mass or more, the solubility of the functional oil component is improved, and the interfacial tension generated between the oil phase and the aqueous phase can be easily lowered, and 30% by mass or less. Therefore, it is preferable in that the surfactant is not excessive and foaming of the emulsion composition is difficult to occur.

<Polyhydric alcohol>
The emulsion composition of the present invention can contain a polyhydric alcohol.
The polyhydric alcohol has a moisturizing function or a viscosity adjusting function. In addition, polyhydric alcohol can reduce the interfacial tension between the aqueous solvent and the oil and fat component, and can easily spread the interface.
Furthermore, by containing a polyhydric alcohol, it is possible to easily form fine and stable emulsified particles. Therefore, it is preferable because the average particle diameter of the emulsified particles can be further refined, and the average particle diameter can be stably maintained for a long period of time while maintaining the fine average particle diameter.
Moreover, the addition of a polyhydric alcohol can lower the water activity of the emulsion composition and suppress the growth of microorganisms.

The polyhydric alcohol in the present invention is not particularly limited as long as it is a dihydric or higher alcohol.
Examples of the polyhydric alcohol include glycerin, diglycerin, triglycerin, polyglycerin, 3-methyl-1,3-butanediol, 1,3-butylene glycol, isoprene glycol, polyethylene glycol, 1,2-pentanediol, Examples include 1,2-hexanediol, propylene glycol, dipropylene glycol, ethylene glycol, diethylene glycol, neopentyl glycol and the like.

  One type of polyhydric alcohol may be used alone, or two or more types may be used in combination.

  As the polyhydric alcohol, those having 3 or more hydroxyl groups in one molecule are preferably used. Thereby, the interfacial tension between the aqueous solvent and the oil / fat component can be more effectively reduced, and more fine and stable emulsified particles can be formed. As a result, when the emulsion composition of the present invention is applied to cosmetics, the transdermal absorbability can be made higher.

  Among the polyhydric alcohols that satisfy the above-mentioned conditions, particularly when glycerin is used, the average particle diameter of the emulsified particles becomes smaller, and the average particle diameter is kept small and stable for a long period of time. ,preferable.

The content of the polyhydric alcohol is preferably 10% by mass to 60% by mass, more preferably 20% by mass to 55% by mass, and still more preferably 30% by mass to 50% by mass with respect to the total mass of the emulsion composition. .
It is preferable that the content of the polyhydric alcohol is 10% by mass or more from the viewpoint that sufficient storage stability is easily obtained depending on the type and content of the fat and oil component. On the other hand, when the content of the polyhydric alcohol is 60% by mass or less, the maximum effect is obtained, which is preferable in that it is easy to suppress an increase in the viscosity of the emulsion composition.

<Other additive components>
In the emulsion composition of the present invention, in addition to the above components, additive components that are usually used in the field of food or cosmetics can be appropriately contained depending on the form.
The other additive component can be contained in the emulsion composition of the present invention as an oil-soluble or water-soluble additive component depending on its characteristics.

For example, other additives include glucose, sucrose, copper carrageenan, locust bean gum, guar gum, hydroxypropyl guar gum, xanthan gum, karaya gum, tamarind seed polysaccharide, gum arabic, tragacanth gum, hyaluronic acid, sodium hyaluronate, sodium chondroitin sulfate Monosaccharides or polysaccharides such as dextrin; sugar alcohols such as sorbitol, mannitol, maltitol, lactose, maltotriitol, xylitol; inorganic salts such as sodium chloride and sodium sulfate; casein, albumin, methylated collagen, hydrolyzed collagen , Proteins having a molecular weight exceeding 5000, such as water-soluble collagen and gelatin; glycine, alanine, valine, leucine, isoleucine, serine, threonine, a Amino acids and derivatives thereof such as paraformic acid, glutamic acid, cystine, methionine, lysine, hydroxylysine, arginine, histidine, phenylalanine, tyrosine, tryptophan, proline, hydroxyproline, acetylhydroxyproline; carboxyvinyl polymer, sodium polyacrylate, polyvinyl Synthetic polymers such as alcohol, polyethylene glycol, ethylene oxide / propylene oxide block copolymer; water-soluble cellulose derivatives such as hydroxyethyl cellulose and methyl cellulose; flavonoids (catechin, anthocyanin, flavone, isoflavone, flavan, flavanone, rutin), ascorbine Acid or its derivatives (ascorbic acid, sodium ascorbate, potassium ascorbate, ascorbic Acid calcium, L-ascorbic acid phosphate ester, magnesium ascorbyl phosphate, sodium ascorbyl phosphate, ascorbyl sulfate, ascorbyl sulfate disodium salt, ascorbyl-2-glucoside, etc.), phenolic acids (chlorogenic acid, ellagic acid, gallic acid , Propyl gallate), lignans, curcumins, coumarins, hydroxystilbenes including pterostilbene, etc., based on their functions, eg functional components, excipients, viscosity modifiers, radical scavenging It may be included as an agent.
In addition, in the present invention, for example, various other medicinal ingredients, pH adjusters, pH buffering agents, ultraviolet absorbers, preservatives, fragrances, or coloring agents are usually used in combination with other additives that are usually used for the purpose. be able to,

In the emulsified composition of the present invention, a pH adjuster can be appropriately used. The pH value of the emulsified composition of the present invention adjusted with a pH adjuster is preferably in the range of 4-10.
Although the measurement of pH is not specifically limited, For example, it can be performed with a pH meter (model number: HM-30V, manufactured by Toa DKK Corporation).

  You may use a pH adjuster before and after preparing an emulsion composition. The pH adjuster is preferably used before the preparation of the emulsified composition from the viewpoint that the pH fluctuation range can be reduced and the pH can be adjusted under milder conditions. In that case, you may add a pH adjuster to any of the water phase composition before preparing an emulsion composition, and an oil phase composition.

  Although it does not specifically limit as a pH adjuster, An inorganic acid, an organic acid, an inorganic base, those salts, etc. are mentioned. Specific examples of the pH adjuster include citric acid, gluconic acid, carboxylic acid, tartaric acid, succinic acid, acetic acid or phthalic acid, trifluoroacetic acid, morpholinoethanesulfonic acid, 2- [4- (2-hydroxyethyl) -1-piperazinyl] ethanesulfonic acid and organic acids and salts thereof; organic bases such as tris (hydroxymethyl), aminomethane and ammonia; inorganic acids such as hydrochloric acid, perchloric acid and carbonic acid and salts thereof; phosphorus Examples thereof include inorganic bases such as sodium phosphate, potassium phosphate, calcium hydroxide, sodium hydroxide, potassium hydroxide, and magnesium hydroxide; inorganic hydrogen salts such as sodium hydrogen phosphate and sodium hydrogen carbonate.

(Average particle diameter of emulsified particles)
The emulsified particles (oil droplets) contained in the emulsified composition of the present invention are not particularly limited, but the average particle size is preferably 5 nm to 300 nm.
In the present specification, the “average particle size of the emulsified particles” or simply “average particle size” means the volume average particle size of the emulsified particles present in the emulsion composition.
The average particle size of the emulsified particles in the present invention is preferably from 5 nm to 300 nm, more preferably from 10 nm to 200 nm, still more preferably from 50 nm to 150 nm, from the viewpoints of storage stability and composition transparency.

The average particle diameter of the emulsified particles contained in the emulsified composition of the present invention can be determined by a known method such as an electron microscope, a centrifugal sedimentation method, a liquid exclusion chromatography method, a laser scattering diffraction method, or a dynamic light scattering method. However, from the viewpoint of accuracy and simplicity of measurement, it is preferable to measure using a dynamic light scattering method.
Examples of commercially available measuring devices using dynamic light scattering include a dense particle size analyzer FPAR-1000 (Otsuka Electronics Co., Ltd.), Nanotrack UPA (Nikkiso Co., Ltd.), Nanosizer (manufactured by Malvern), and the like. However, the average particle diameter in the present invention is a value measured at 25 ° C. using Nanotrac UPA.
Specifically, the emulsified composition is measured as it is without being diluted, and is determined as the median diameter (d = 50).
In addition to the components of the emulsion composition, the average particle size of the emulsion particles can be adjusted by factors such as the stirring conditions (shearing force, temperature, pressure) in the production method and the ratio of the oil phase to the water phase. it can.

(Turbidity of emulsion composition)
In the present invention, turbidity is used as an index of transparency.
The turbidity of the emulsion composition is as follows: 9.9 g of pure water is used to dilute 0.1 g of the emulsion composition to obtain a water dilution, and the water dilution is 25 ° C. using light having a wavelength of 650 nm. It is defined by the absorbance measured at 1.
The turbidity (absorbance) of the emulsion composition is preferably 0.001 to 0.2, more preferably 0.001 to 0.175, and still more preferably 0.001 to 0.15.
Although the light absorbency (turbidity) used as a transparency parameter | index is not specifically limited, It measures using the above-mentioned spectrophotometer (for example, V-630, JASCO Corporation make).

[Method for producing emulsified composition]
The manufacturing method of the emulsion composition of this invention is not specifically limited, It can manufacture according to a well-known method. For example, a polyglycerin fatty acid ester is dissolved in an aqueous medium (such as water) to obtain an aqueous phase composition. A functional oily component and vitamin E are mixed and dissolved to obtain an oil phase composition. Then, the manufacturing method which consists of a step of mixing an aqueous phase composition and an oil phase composition under stirring, emulsifying and dispersing, and obtaining an emulsified composition is mentioned.

  The ratio (mass) of the oil phase composition and the aqueous phase composition in the emulsification dispersion is not particularly limited, but the ratio (mass%) of the oil phase composition / aqueous phase composition is 0.1 / 99.9-50 / 50 is preferable, 0.5 / 99.5-30 / 70 is more preferable, and 1 / 99-20 / 80 is still more preferable. By setting the ratio of the oil phase composition / water phase composition to 0.1 / 99.9 or more, the active ingredient does not become low, and the problem of practical use of the emulsion composition tends not to occur. In addition, by setting the ratio of the oil phase composition / water phase composition to 50/50 or less, the concentration of the polyglycerin fatty acid ester in the emulsified composition is not lowered, and the emulsion stability of the emulsified composition is deteriorated. This is preferable.

The emulsification dispersion may be performed by a one-step emulsification operation, but by performing the emulsification operation of two or more steps, uniform and fine emulsification particles can be obtained, so that the emulsification operation of two or more steps can be performed. preferable. Specifically, in addition to a one-step emulsification operation using a normal emulsification apparatus (for example, stirrer, impeller stirring, homomixer, continuous flow shearing apparatus, etc.) utilizing a shearing action, a high-pressure homogenizer or It is particularly preferable to use two or more types of emulsifiers together by a method such as emulsification through an ultrasonic disperser or the like. By using a high-pressure homogenizer, it is possible to make the emulsified particles even more uniform.
Further, the emulsification operation may be performed a plurality of times for the purpose of obtaining emulsified particles having a more uniform average particle size.

[Cosmetics]
The cosmetic of the present invention contains an emulsified composition containing a functional oily component, vitamin E, and an acyl glutamate represented by the general formula (1), but the content of the emulsified composition is particularly limited. Not.
Thereby, the cosmetics of this invention are excellent in emulsion stability.
For details of the emulsified composition, the matters described above in the section of the emulsified composition apply.

<Phospholipid>
The emulsified composition and the cosmetic of the present invention preferably further contain a phospholipid.
Examples of the phospholipid include glycerophospholipid. Examples of glycerophospholipids include phosphatidic acid, bisphosphatidic acid, lecithin (phosphatidylcholine), phosphatidylethanolamine, phosphatidylmethylethanolamine, phosphatidylserine, phosphatidylinositol, phosphatidylglycerin. Or diphosphatidylglycerin (cardiolipin), etc., and those derived from plants such as soybean, corn, peanut, rapeseed, wheat, etc., derived from animals such as egg yolk, cattle, or microorganisms such as Escherichia coli Of various lecithins.

In the present invention, glycerophospholipid that has been enzymatically decomposed can be used as glycerophospholipid. For example, lysolecithin obtained by enzymatic degradation of lecithin (enzymatic degradation lecithin) can be obtained by hydrolysis of lecithin with an acid or alkali catalyst, but can also be obtained by hydrolysis of lecithin using phospholipase A ₁ or A ₂ . When lyso compounds represented by such lysolecithin are represented by compound names, lysophosphatidic acid, lysophosphatidylglycerin, lysophosphatidylinositol, lysophosphatidylethanolamine, lysophosphatidylmethylethanolamine, lysophosphatidylcholine (lysolecithin), lysophosphatidylserine Is mentioned.

One kind of phospholipid may be used alone, or two or more kinds may be used in combination.
The content of phospholipid is preferably 0.1% by mass to 10% by mass, more preferably 0.2% by mass to 8% by mass with respect to the total mass in the emulsion composition. A mass% to 4 mass% is particularly preferred.

  From the viewpoint of transparency of the cosmetic of the present invention, lecithin or hydrogenated lecithin is preferable. The transparency of cosmetics can be improved by containing these lecithins. Of these, lecithin is more preferable.

  As for lecithin, lecithin having a purity of 60% by mass or more is industrially used as lecithin. However, in the present invention, a lecithin having a purity of 80% by mass or more generally called “high purity lecithin” is used. More preferably, it is 90 mass% or more.

  Moreover, a commercial item may be used for lecithin. Examples of commercially available products include SLP-White (manufactured by Sakai Oil), Emmeletic 900 (manufactured by Lucas Meyer), Phospholipon 50 (manufactured by Lipoid), Recion P (manufactured by Riken Vitamin), and the like.

Further, the cosmetic may further contain other additive components that exhibit useful effects when used in cosmetics and the like.
For example, other additive components include polyhydric alcohols such as glycerin and 1,3-butylene glycol; copper carrageenan, locust bean gum, guar gum, hydroxypropyl guar gum, xanthan gum, caraya gum, tamarind seed polysaccharide, gum arabic, acacia gum, Alkalinegenes-producing polysaccharide (also referred to as “alkathylan”), tragacanth gum, gellan gum, native gellan gum, hyaluronic acid, sodium hyaluronate, chondroitin sulfate sodium, dextrin, inulin and other monosaccharides or polysaccharides; sorbitol, mannitol, multi Sugar alcohols such as tall, lactose, maltotriitol, xylitol; inorganic salts such as sodium chloride and sodium sulfate; casein, albumin, methylated cola Proteins with a molecular weight exceeding 5000, such as gen, hydrolyzed collagen, water-soluble collagen and gelatin; glycine, alanine, valine, leucine, isoleucine, serine, threonine, aspartic acid, glutamic acid, cystine, methionine, lysine, hydroxylysine, arginine, histidine , Phenylalanine, tyrosine, tryptophan, proline, hydroxyproline, acetylhydroxyproline and other amino acids and their derivatives; synthesis of carboxyvinyl polymer, sodium polyacrylate, polyvinyl alcohol, polyethylene glycol, ethylene oxide / propylene oxide block copolymer, etc. Polymers; water-soluble cellulose derivatives such as hydroxyethyl cellulose and methyl cellulose; catechins, anthocyanins, flavones, isof Flavonoids such as bon, flavan, flavanone, rutin; ascorbic acid, sodium ascorbate, potassium ascorbate, calcium ascorbate, L-ascorbyl phosphate, ascorbyl magnesium phosphate, sodium ascorbyl phosphate, ascorbyl sulfate, ascorbyl sulfate Ascorbic acid or derivatives thereof such as disodium salt and ascorbyl-2-glucoside; phenols such as chlorogenic acid, ellagic acid, gallic acid, propyl gallate, lignans, curcumins, coumarins, pterostilbene, hydroxystilbene Can be mentioned.

It is preferable that the cosmetics of this invention contain 0.001 mass%-1.0 mass% of vitamin Es with respect to the total mass of cosmetics.
Moreover, it is more preferable to contain 0.01 mass%-1 mass% of vitamin E with respect to the total mass of cosmetics, and it is still more preferable to contain 0.1 mass%-1 mass%.

  Cosmetics include lotions, beauty liquids, milky lotions, cream packs / masks, packs, cosmetics for hair washing, fragrance cosmetics, liquid body cleansers, UV care cosmetics, deodorant cosmetics, oral care cosmetics, etc. (for cosmetics) Examples include cosmetics. The emulsified composition of the present invention is preferably applied to an aqueous cosmetic such as a lotion that requires transparency.

  Aqueous cosmetics such as skin lotions are generally required to have transparency, and are required to be transparent even after change over time. The term “transparency” used herein refers to the turbidity described above as an index, and is defined by the absorbance of cosmetics measured at 25 ° C. using light having a wavelength of 650 nm.

  The cosmetic preferably has an absorbance (turbidity) measured using light having a wavelength of 650 nm of 0.001 to 0.2, more preferably 0.001 to 0.175, and more preferably absorbance. 0.001 to 0.15.

  The method for preparing the cosmetic is not particularly limited. For example, the emulsified composition of the present invention and components that can be added as needed can be obtained by mixing or the like using a stirrer, impeller stirring or a homomixer.

  EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited to them at all.

1. Preparation and Evaluation of Emulsified Composition [Example 1-1]
<Preparation of emulsified composition (EM-1)>
The following components were dissolved for 1 hour while heating at 70 ° C. to obtain an aqueous phase composition.
・ Decaglyceryl monooleate (HLB = 12) 9.40 g
・ Glycerin 40.42g
・ Pure water 26.95g

Moreover, the following component was melt | dissolved for 1 hour, heating at 70 degreeC, and the oil phase composition was obtained.
・ Stearyl glycyrrhetinate (component (A)) 0.5g
・ Tocopherol (component (B)) 16.52g
・ Lauroylglutamate dihexyldecyl (component (C)) 2.91 g
・ Purified lecithin (derived from soybean) 3.30 g

  While maintaining the aqueous phase composition in a stirred state, the oil phase composition was added, and then dispersed for 4 minutes using a high-pressure homogenizer to obtain a preliminary emulsion.

Subsequently, the obtained preliminary emulsified product was cooled to about 60 ° C., and high pressure emulsification was performed at a pressure of 245 MPa using an optimizer HJP-25005 (manufactured by Sugino Machine Co., Ltd.).
Thereafter, the obtained emulsified composition was filtered through a microfilter having an average pore diameter of 1 μm, and heat-sterilized at 80 ° C. for 30 minutes to prepare an emulsified composition EM-1.

  In addition, the detail of each component used for preparation of a water phase composition and an oil phase composition is as below-mentioned.

[Examples 1-2 to 1-15, Comparative Examples 1-1 to 1-13]
In Example 1, all the same as Example 1-1 except having changed the kind and quantity of each component used for preparation of emulsion composition EM-1 as shown in the following Table 1-Table 5, Table 7. Thus, emulsified compositions EM-2 to EM-28 of Examples 1-2 to 1-15 and Comparative Examples 1-1 to 1-13 were obtained. The unit of the numerical values in the compositions of Tables 1 to 5 and Table 7 or Table 9 is% by mass, and “-” indicates unblended.

[Evaluation of emulsified composition]
About each emulsified composition obtained above, the initial turbidity was measured, the turbidity fluctuation rate was calculated, or the stability over time was evaluated. Details are as follows.

(Measurement method of initial turbidity)
0.1 g of each emulsified composition was added to 9.9 g of pure water, respectively, and stirred for 10 minutes using a magnetic stirrer to obtain a water dilution.
Using the obtained water dilution of each emulsified composition, the absorbance at 650 nm was measured at 25 ° C. using a spectrophotometer (V-630, manufactured by JASCO Corporation) as an index of turbidity.

(Calculation method of turbidity fluctuation rate)
The turbidity fluctuation rate is the change in absorbance from the initial turbidity immediately after adjustment after measuring the absorbance of the turbidity after aging at 40 ° C. for 2 weeks in the same manner as the initial turbidity. The rate A (%) was determined based on the following formula.
Rate of change A (%) = absorbance of turbidity after time / absorbance of initial turbidity × 100
The closer the change rate A (%) is to 100%, the better the emulsion composition is over time.

(Evaluation method of stability over time)
The evaluation of stability over time (transparency of transparency) was evaluated based on the following evaluation criteria using the turbidity fluctuation rate A (%) calculated based on the above formula.
-Criteria for evaluating stability of emulsion composition over time-
A: Less than 130% B: 130% or more and less than 150% C: 150% or more

  The above results are shown in Tables 1 to 5 below.

As shown in Table 1, the emulsion composition (Example 1-1) containing (C) acyl glutamate is compared to the emulsion composition (Comparative Examples 1-1 to 1-4) not containing the component (C). It was found that the stability over time was excellent.
Further, as shown in Table 6 below, also in the temporal stability of the cosmetics using EM-1 to 5, emulsion compositions containing component (C) acyl glutamate (Examples 1-1, 2-1 to 2-3) was found to be excellent.
From the above, it was found that the emulsion composition containing (C) the acyl glutamate ester is excellent in stability over time for both the emulsion composition and the cosmetic compounded therewith.

In order to incorporate a high concentration of the functional oil component in the emulsified composition, an oil agent suitable for dissolving the functional oil component is required. Then, as a result of evaluating the solubility in (A) component functional oil component stearyl grille retinate and evaluating the solubility in a general-purpose cosmetic oil, (B) component tocopherol is (B) comparative component glyceryl tri (capryl / caprin), It was found that the solubility was superior to that of triethylhexanoin.
As shown in Table 2, when (A) component stearyl retinoate is mixed at a high concentration, the emulsion composition (Example 1-2) using component (B) tocopherol as an oil agent is stable, B) In the emulsified compositions (Comparative Examples 1-6 and 1-8) using comparative components tri (caprylic acid / capric acid) glyceryl and triethylhexanoin, they were deposited with refrigeration over time.
In addition, in the concentration range (0.5%) in which (A) component stearyl glycyrrhetinate is dissolved, an emulsion composition (Example 1-1) in which (B) component tocopherol and (C) component acylglutamate are used in combination, (B) It turned out that it is excellent also in temporal stability compared with the emulsion composition (Comparative Examples 1-5, 1-7) which does not use a component.
From the above, it was confirmed that the emulsified composition in which the (B) component tocopherol and the (C) component acyl glutamate ester were used in combination with the functional oil component at a high concentration, and that the stability over time was excellent.

  As shown in Table 3 and FIG. 1, when the ratio (C / B) of the amount of (C) component acyl glutamate to the amount of (B) component tocopherol (C / B) is 0.54 or less, It has been found that stability is improved.

  As shown in Tables 4 and 5, it was confirmed that the emulsion composition using the (B) component tocopherol and the (C) component acyl glutamate ester together can contain the (A) functional oil component and is excellent in stability over time. It was done.

The detail of each component shown by the said Table 1-Table 5, and the following Table 6 and Table 7 is as follows.
As the monooleic acid decaglyceryl (also known as decaglycerin monooleic acid ester), Nikko Chemicals Decynlyn 1-O (HLB = 12) manufactured by Nikko Chemicals Co., Ltd. was used.
Lauroylglutamate dihexyldecyl, lauroylglutamate diisostearyl, lauroylglutamate bis (hexyldecyl / octyldodecyl), lauroylglutamate dioctyldodecyl, stearoylglutamate dioctyldodecyl, respectively, AMITER LG16G1600L1G1L20G1L1G1L1L1G1G1L LG200 and SG2000 were used.
ELDEW CL-301 and PS-203 manufactured by Ajinomoto Healthy Supply Co., Ltd. were used as dilauroyl glutamate (cholesteryl / behenyl / octyldodecyl) and dilauroyl glutamate (phytosteryl / octyldodecyl).

  Riken E Oil 800 manufactured by Riken Vitamin Co., Ltd. was used as the tocopherol.

As the tri (caprylic acid / capric acid) glyceryl, Kacon Co., Ltd. Cocoonado MT was used.
Triethylhexanoin is EMALEX OTG manufactured by Nippon Emulsion Co., Ltd. Isostearyl isostearate is HAI ISIS manufactured by Higher Alcohol Industry Co., Ltd. Persic oil is NIKKOL Apricot Oil manufactured by Nikko Chemicals Co., Ltd. Were used respectively.
Purified lecithin (SLP-white) lysolecithin (white lyso), hydrogenated lecithin (SLP-white H). Each was made by Sakai Oil Co., Ltd. (soybean-derived).

2. Preparation and Evaluation of Cosmetics Next, using emulsified compositions (Examples 1-1 to 1-2, 1-9 to 1-12, 1-13 to 15 and Comparative Examples 1-1 to 1-4). As an example of cosmetics, lotion was prepared, and the turbidity fluctuation rate was calculated and the stability over time was evaluated.
The emulsified compositions EM-26 to EM-28 of Examples 1-13 to 1-15 show the types and amounts of the respective components used for the preparation of the emulsified composition EM-1 in Tables 6 and 7 below. All were prepared in the same manner as in Example 1-1, except for the changes as shown. The unit of the numerical value in the composition of Table 6 and Table 7 is mass%, and "-" shows unblended.

[Examples 2-1 to 2-6, Comparative examples 2-1 to 2-4]
<Preparation of lotion>
Using the emulsified composition described in Table 6 or 7, diluted with a lotion preparation simulated liquid prepared as follows so that the tocopherol content in the lotion is the amount shown in Table 6 or Table 7, A sample for evaluation was prepared by stirring for 10 minutes using a tic stirrer.
The tocopherol content in the skin lotion of each example is as described in Table 6 or Table 8.

-Preparation of skin lotion preparation-
The skin lotion preparation simulated solution is obtained by adding 10% by mass of polyhydric alcohol: 1,3 butylene glycol (BG) and preservative: 0.3% by mass of phenoxyethanol to a 10 mM citrate buffer aqueous solution (pH 7) and mixing them. Prepared.

[Evaluation]
Using each lotion obtained above, the turbidity fluctuation rate was calculated and the stability over time was evaluated. Details are as follows.

(Calculation method of turbidity fluctuation rate)
Using cosmetics, the absorbance at 650 nm was measured as an index of turbidity, and the initial turbidity was measured at 25 ° C. using a spectrophotometer (V-630, manufactured by JASCO Corporation).

The absorbance of the turbidity after aging after aging the cosmetic for 2 weeks at 40 ° C. was measured in the same manner as the initial turbidity. The results are shown in Tables 6 and 8.
As the turbidity fluctuation rate, the rate of change A (%) in absorbance from the initial turbidity immediately after adjustment was determined based on the following formula.
Rate of change A (%) = absorbance of turbidity after time / absorbance of initial turbidity × 100
The closer the change rate A (%) is to 100%, the better the cosmetics are over time.

(Evaluation method of stability over time)
The evaluation of stability over time (transparency of transparency) was evaluated based on the following evaluation criteria using the turbidity fluctuation rate A (%) calculated based on the above formula. The results are shown in Tables 6 and 8.
-Evaluation criteria for stability of cosmetics over time-
A: Less than 110% B: 110% or more and less than 130% C: 130% or more

[Examples 2-7 to 2-16]
<Preparation of lotion and serum>
As shown in the following Table 9 and the following text, the emulsified compositions of the examples were prepared. The prepared cosmetics were all excellent in stability over time.

  Glycasil 2000 (Lonza Co., Ltd.) contains propynyl iodide butylcarbamate and cyclodextrin.

[Example 2-17]
<Preparation of emulsion>
An emulsion was prepared on the basis of the conventional method according to the following formulation. The following numerical value means the mass% with respect to the total mass of prescription.
(Ingredient) (mass%)
Stearyl glycyrrhetinate (EM-1) 0.6
Lutein 0.01
Haematococcus alga extract 0.5
Squalane 8.0
Jojoba oil 7.0
Glyceryl paraaminobenzoate 1.0
Cetyl alcohol 1.5
Glycerol monostearate 2.0
Polyoxyethylene cetyl ether 3.0
Polyoxyethylene soorbitan monooleate 2.0
1,3-butylene glycol 1.0
Glycerin 2.0
Methylparaben 0.04
Sucrose stearate 0.1
Polyglyceryl oleate-10 0.1
Tocopherol acetate 0.01
Phenoxyethanol 0.2
Collagen 1.0
Sodium citrate 1.0
Fragrance Appropriate amount of purified water Remaining amount In the above composition, it was confirmed that the emulsion could be prepared in the same manner when fucoxanthin was used instead of lutein.

[Example 2-18]
<Preparation of cream>
A cream was prepared according to a conventional method according to the following formulation. The following numerical value means the mass% with respect to the total mass of prescription.
(Ingredient) (mass%)
Stearyl glycyrrhetinate (EM-1) 0.6
Cetostearyl alcohol 3.0
Glycerin fatty acid ester 2.0
Polyoxyethylene (20) sorbitan monooleate 1.0
Sorbitan monostearate 1.0
N-stearoyl-N-methyltaurine sodium 0.5
Vaseline 5.0
Lecithin 0.5
Dimethylpolysiloxane (100 mPa · s) 3.0
Glyceryl tri-2-ethylhexanoate 20.0
Lactic acid 1.0
Magnesium ascorbate phosphate 0.5
Dipropylene glycol 10.0
Sodium citrate 0.5
Titanium oxide 0.1
Perfume proper amount edetate 2 sodium
Ethyl paraoxybenzoate 0.05
Purified water remaining

[Example 2-19]
<Preparation of jelly-like serum>
According to the following prescription, a jelly-like cosmetic liquid was prepared based on a conventional method. The following numerical value means the mass% with respect to the total mass of prescription.
(Ingredient) (mass%)
Stearyl glycyrrhetinate emulsion (EM-1) 0.13
Ceramide 3, 6 0.01
(PEG-240 / decyltetradeceth-20 / HDI) copolymer 0.5
Hydrolyzed collagen 1.0
Acetylhydroxyproline 1.0
Ethylhexyl glycerol 0.05
Oleic acid 0.05
1,3-butylene glycol 1.0
Glycerin 2.0
Methylparaben 0.2
Sucrose stearate 0.01
Polyglyceryl stearate-2 0.01
Phenoxyethanol 0.2
Collagen 1.0
Sodium citrate 1.0
Damask rose flower oil appropriate amount perfume appropriate amount purified water remaining

As shown in Tables 1 to 5, it was confirmed that the emulsified compositions of the examples had high transparency and excellent stability over time.
In addition, as shown in Tables 6 and 8 to 9, it was confirmed that the cosmetics containing the emulsified compositions of Examples have high transparency and excellent stability over time.

Claims (12)

A functional oil component;
Vitamin E,
An acyl glutamate represented by the following general formula (1);
A polyhydric alcohol having a content of 30% by mass to 50% by mass with respect to the total mass of the emulsified composition,
An emulsified composition in which the functional oil component is at least one selected from the group consisting of glycyrrhetinic acid derivatives, fat-soluble vitamins other than vitamin E, and carotenoids.

  The emulsified composition according to claim 1, wherein the vitamin E includes at least one selected from the group consisting of tocopherol and a derivative thereof, and tocotrienol and a derivative thereof. The emulsion composition according to claim 1 or 2, wherein the acyl glutamate represented by the general formula (1) is an acyl glutamate represented by the following general formula (2).

  Furthermore, the emulsion composition of any one of Claims 1-3 containing polyglyceryl fatty acid ester.   The emulsified composition according to claim 4, wherein the content of the polyglycerin fatty acid ester is 0.5% by mass to 30% by mass with respect to the total mass of the emulsified composition.   The acyl glutamate represented by the general formula (1) is dilauryl glutamic acid lauroyl glutamate, diisostearyl lauroyl glutamate, bis (hexyldecyl / octyldodecyl) lauroyl glutamate, dioctyldecyl lauroyl glutamate, di (cholesteryl / octyldecyl) lauroyl glutamate. , Lauroyl glutamate di (cholesteryl / behenyl / octyldodecyl), lauroyl glutamate di (phytosteryl / octyldodecyl), lauroyl glutamate di (octyldodecyl / phytosteryl / behenyl), lauroylglutamate (phytosteryl / behenyl / octyldodecyl) At least selected from the group consisting of dioctyldodecyl stearoyl glutamate Is also one, emulsified composition according to any one of claims 1 to 5.   The emulsified composition according to any one of claims 1 to 6, wherein the polyhydric alcohol contains glycerin.   The emulsified composition according to any one of claims 1 to 7, comprising 5 mass% or more and less than 25 mass% of vitamin E with respect to the total mass of the emulsified composition.   The emulsified composition according to any one of claims 1 to 8, wherein the functional oil component is an oil-soluble component that dissolves in vitamin E at 0.5% by mass or more at 25 ° C.   Cosmetics containing the emulsion composition of any one of Claims 1-9.   The cosmetic according to claim 10, further comprising a phospholipid.   The cosmetic according to claim 10 or 11, wherein the vitamin E is contained in an amount of 0.001% by mass to 1.0% by mass with respect to the total mass of the cosmetic.