Emulsion composition

Abstract

To provide an emulsion composition capable of improving makeup spreadability and makeup sustainability when applying a makeup after washing a continuously used part even in the case of continuous use in a short time.SOLUTION: There is provided an emulsion composition which comprises the following components (A), (B), (C), (D) and (E), wherein the content mass ratio [(E) / {(A)+(B)+(C)+(D)}] of the component (E) to the total of the components (A), (B), (C) and (D) is 0.01 or more and 1 or less: (A) one or two or more compounds selected from sphingosine, a salt of sphingosine, pseudosphingosine, a salt of pseudosphingosine, an anionic surfactant and a cationic surfactant, (B) ceramides, (C) a glycerol fatty acid ester, (D) a higher alcohol and (E) a polymer in which the light transmittance measured at 25°C after mixing 25 pts.mass of the polymer with 100 pts.mass of cetanol at 85°C is 90% or more and the glass transition temperature Tg of the main chain is 25°C or less.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an emulsion composition. [Background technology]

[0002] Alpha-gel has a hydrated crystal structure and a lamellar structure. Most of the intercellular lipids present in the stratum corneum, the outermost layer of the skin, also have this alpha-gel structure. It has the function of preventing the intrusion of substances from the outside and the evaporation of water from the inside of the skin, while retaining moisture itself, thereby maintaining the flexibility and smooth appearance of the skin. It is known that the stratum corneum retains approximately 33% by mass of moisture in the form of bound water, and the intercellular lipids of the stratum corneum retain approximately 13% by mass of bound water. Because α-gel is capable of retaining moisture, its application in cosmetics and other applications is being considered. For example, Patent Document 1 describes that an emulsion composition containing ceramides, glycerol monofatty acid esters, higher alcohols, and the like forms an α-gel structure. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-22997 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, when applying makeup using foundation, blush, and the like, there is a demand for the makeup to be applied smoothly and evenly, but most people suffer from rough skin surfaces, which can cause uneven application and reduce the ease with which the makeup can be applied and last. The present inventors applied the emulsion composition described in Patent Document 1 for a long time, and found that short-term continuous use did not improve the roughness of the skin surface, and that when the area where the emulsion composition was applied for a long time was washed and acclimatized, and makeup was applied with lotion, milky lotion and foundation, the makeup application and makeup retention were insufficient. In addition, the emulsion composition described in Patent Document 1 also had the problem that when the emulsion composition was applied to the skin and then foundation was applied over the coating, the foundation was prone to becoming uneven.

[0005] The present invention relates to providing an emulsion composition which can improve the application and durability of makeup even when the applied area is cleansed and makeup is then applied, even when the applied area is used continuously for a short period of time. [Means for solving the problem]

[0006] The present inventors have unexpectedly found that an emulsion composition comprising one or more compounds selected from sphingosine, sphingosine salts, pseudosphingosine, pseudosphingosine salts, anionic surfactants, and cationic surfactants, ceramides, glycerol fatty acid esters, higher alcohols, and a polymer having a light transmittance of 90% or more and a main chain glass transition temperature Tg of 25°C or less when measured at 25°C after mixing 25 parts by mass with 100 parts by mass of cetanol at 85°C, even when used continuously for a short period of time, can improve the application and staying power of makeup when the area where the composition has been used is washed and makeup is then applied, thereby completing the present invention.

[0007] The present invention provides an emulsion composition containing the following components (A), (B), (C), (D) and (E), in which the mass ratio of the content of component (E) to the total content of components (A), (B), (C) and (D) [(E) / {(A)+(B)+(C)+(D)}] is 0.01 or more and 1 or less. (A) one or more compounds selected from sphingosine, a salt of sphingosine, a pseudosphingosine, a salt of pseudosphingosine, an anionic surfactant, and a cationic surfactant; (B) Ceramides (C) Glycerol fatty acid ester (D) Higher alcohol (E) A polymer having a light transmittance of 90% or more when 25 parts by mass of the polymer are mixed with 100 parts by mass of cetanol at 85° C. and then measured at 25° C., and a glass transition temperature Tg of the main chain of the polymer is 25° C. or less. Effect of the Invention

[0008] The emulsion composition of the present invention can improve the application and durability of makeup even when the application site is washed and makeup is applied, even when the emulsion composition is used for a short period of time. In addition, when the emulsion composition of the present invention is applied to the skin and then a foundation is applied on top of the applied film, the foundation is less likely to become uneven. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] <Component (A)> Among the compounds of component (A) used in the present invention, sphingosines and pseudosphingosines include sphingosines represented by the following general formula (1).

[0010] [ka]

[0011] [In formula (1), R 1 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 4 to 30 carbon atoms which may be substituted with a hydroxyl group, a carbonyl group or an amino group; Y represents a methylene group, a methine group, or an oxygen atom; X 1 , X 2 , and X 3 each independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group, X 4 represents a hydrogen atom, an acetyl group, or a glyceryl group, or forms an oxo group together with the adjacent oxygen atom (provided that when Y is a methine group, X 1 and X 2One of X is a hydrogen atom and the other is not present. 4 When forms an oxo group, X 3 does not exist. ); R 2 and R 3 each independently represents a hydrogen atom, a hydroxyl group, a hydroxymethyl group, or an acetoxymethyl group; a R each independently represents a hydrogen atom, an amidino group, or a linear or branched, saturated or unsaturated hydrocarbon group having a total of 1 to 8 carbon atoms which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group; a represents the number 2 or 3; The dashed lines indicate that the bond may be an unsaturated bond.

[0012] In formula (1), R 1 represents a linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 4 to 30 carbon atoms which may be substituted with a hydroxyl group, a carbonyl group or an amino group, and is preferably a linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 7 to 22 carbon atoms which may be substituted with a hydroxyl group. Among these, preferred are linear or branched alkyl groups having 10 to 20 carbon atoms, and linear or branched alkyl groups having 10 to 20 carbon atoms and having a hydroxyl group at the Y terminal, and in the case of branched alkyl groups, preferred are those in which the branch chain is methyl-branched, etc. Preferred specific examples include a tridecyl group, a tetradecyl group, a pentadecyl group, a hexadecyl group, a 1-hydroxytridecyl group, a 1-hydroxypentadecyl group, an isohexadecyl group, and an isostearyl group.

[0013] Y is a methylene group (CH 2 ), a methine group (CH) or an oxygen atom. X 1 , X 2 , and X 3 each independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group; X 4 represents a hydrogen atom, an acetyl group, a glyceryl group, or a substituent which forms an oxo group together with the adjacent oxygen atom. X 1 , X 2 , and X 3 The combination of X 1 , X 2 , and X 3 A combination in which 0 to 1 of X is a hydroxyl group and the remainder are hydrogen atoms is preferred. 4 is preferably a hydrogen atom. When Y is a methine group, X 1 and X 2 Only one of the two is a hydrogen atom, and the other is not present. 4 When forms an oxo group, X 3 does not exist.

[0014] R 2 and R 3 R each independently represents a hydrogen atom, a hydroxyl group, a hydroxymethyl group, or an acetoxymethyl group. 3 Among these, a hydrogen atom is particularly preferred.

[0015] In addition, a represents the number 2 or 3, and when a is 2, R is R 4 and R 5 When a is 3, R is R 4 , R 5 and R 6 Shows.

[0016] R 4 , R 5 and R 6 are each independently a hydrogen atom or an amidino group, or a linear or branched, saturated or unsaturated hydrocarbon group having a total of 1 to 8 carbon atoms which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group. The hydroxyalkoxy group which may substitute for this hydrocarbon group is preferably a linear or branched hydroxyalkoxy group having 1 to 7 carbon atoms. In addition, the alkoxy group is preferably a linear or branched alkoxy group having 1 to 7 carbon atoms. R 4 , R 5 and R 6Examples of the alkyl group include a hydrogen atom; an amidino group; a straight-chain or branched-chain alkyl group, such as a methyl group, an ethyl group, a propyl group, a 2-ethylhexyl group, or an isopropyl group; an alkenyl group, such as a vinyl group or an allyl group; and a hydrocarbon group having a total of 1 to 8 carbon atoms substituted with 1 to 6 groups selected from a hydroxyl group, a hydroxyalkoxy group, and an alkoxy group, such as a hydroxymethyl group, a 2-hydroxyethyl group, a 1,1-dimethyl-2-hydroxyethyl group, a 2-hydroxypropyl group, a 2,3-dihydroxypropyl group, a 2-hydroxy-3-methoxypropyl group, a 2,3,4,5,6-pentahydroxyhexyl group, a 1,1-bis(hydroxymethyl)ethyl group, a 2-(2-hydroxyethoxy)ethyl group, a 2-methoxyethyl group, a 1-methyl-2-hydroxyethyl group, a 3-hydroxypropyl group, a 3-methoxypropyl group, or a 1,1-bis(hydroxymethyl)-2-hydroxyethyl group.

[0017] Among these, R 4 , R 5 and R 6 is preferably a hydrogen atom or an alkyl group optionally substituted with 1 to 3 substituents selected from a hydroxyl group and a hydroxyalkoxy group, such as a methyl group, a 2-hydroxyethyl group, a 1,1-dimethyl-2-hydroxyethyl group, a 1,1-bis(hydroxymethyl)ethyl group, or a 2-(2-hydroxyethoxy)ethyl group.

[0018] As the sphingosines represented by general formula (1), naturally occurring sphingosines represented by the following general formula (2) or synthetic products having the same structure and derivatives thereof (hereinafter also referred to as natural sphingosines), or pseudo-type sphingosines represented by the following general formula (3) (hereinafter also referred to as pseudo-type sphingosines) are preferred.

[0019] [ka]

[0020] [In formula (2), R 7represents a linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 7 to 19 carbon atoms which may be substituted with a hydroxyl group; Y 1 represents a methylene group or a methine group; X 5 , X 6 and X 7 each independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group; X 8 represents a hydrogen atom or forms an oxo group together with the adjacent oxygen atom (provided that Y 1 When is a methine group, X 5 and X 6 One of the following is a hydrogen atom, and the other is absent: X 8 When forms an oxo group, X 7 does not exist. ); R 8 represents a hydroxymethyl group or an acetoxymethyl group; a R 1 each independently represents a hydrogen atom, an amidino group, or a linear or branched, saturated or unsaturated hydrocarbon group having a total of 1 to 4 carbon atoms which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group; a represents the number 2 or 3; The dashed lines indicate that unsaturated bonds may be present.

[0021] [ka]

[0022] [In formula (3), R 9 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 10 to 22 carbon atoms which may be substituted with a hydroxyl group; X 9 represents a hydrogen atom, an acetyl group, or a glyceryl group; a R 2each independently represents a hydrogen atom, an amidino group, or a linear or branched, saturated or unsaturated hydrocarbon group having a total of 1 to 8 carbon atoms which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group; a represents the number 2 or 3.

[0023] Here, the natural sphingosine represented by the general formula (2) will be described. In formula (2), R 7 is preferably a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 7 to 19 carbon atoms, more preferably a linear, saturated or unsaturated hydrocarbon group having 13 to 15 carbon atoms. 1 are preferably each independently a hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms.

[0024] Specific examples of natural sphingosines represented by general formula (2) include sphingosine (natural sphingosine), dihydrosphingosine, phytosphingosine, sphingadienine, dehydrosphingosine, dehydrophytosphingosine, and N-alkylated forms (for example, N-methylated forms) thereof. These sphingosines may be used in the form of an optically active natural form (D(+) form), an optically active non-natural form (L(-) form), or a mixture of the natural and non-natural forms. The relative configuration of the above compounds may be that of the natural form, or may be that of a non-natural form, or may be a mixture of these. Among such natural sphingosines, those selected from the compound group (α) represented by the following formula are preferred, with PHYTOSPHINGOSINE (INCI name; 8th Edition) being more preferred.

[0025] [ka]

[0026] These may be either natural extracts or synthetic substances, and commercially available products can be used. Commercially available natural sphingosines include, for example, D-sphingosine (4-sphingosine) (manufactured by SIGMA-ALDRICH), DS-phytosphingosine (manufactured by DOOSAN), and phytosphingosine (manufactured by Cosmopharm).

[0027] Next, the pseudo-sphingosines represented by the general formula (3) will be described. In formula (3), R 9 As the isostearyl group, an iso-branched alkyl group having 14 to 20 carbon atoms is preferred, and an isostearyl group is particularly preferred. As the isostearyl group, an isostearyl group obtained by using isostearyl alcohol derived from a by-product during the production of dimer acid using fatty acids derived from animal and vegetable oils as a raw material is most preferred. In addition, in formula (3), when a is 2, R 2 is R a10 and R a11 When a is 3, R 2 is R a10 , R a11 and R a12 Shows.

[0028] R a10 , R a11 and R a12Examples of the alkyl group include a hydrogen atom, an amidino group, a straight-chain or branched-chain alkyl group such as a methyl group, an ethyl group, a propyl group, a 2-ethylhexyl group, or an isopropyl group, an alkenyl group such as a vinyl group or an allyl group, and an alkyl group having a total of 1 to 8 carbon atoms and having a substituent selected from a hydroxyl group, a hydroxyalkoxy group, and an alkoxy group, such as a hydroxymethyl group, a 2-hydroxyethyl group, a 1,1-dimethyl-2-hydroxyethyl group, a 2-hydroxypropyl group, a 2,3-dihydroxypropyl group, a 2-hydroxy-3-methoxypropyl group, a 2,3,4,5,6-pentahydroxyhexyl group, a 1,1-bis(hydroxymethyl)ethyl group, a 2-(2-hydroxyethoxy)ethyl group, a 2-methoxyethyl group, a 1-methyl-2-hydroxyethyl group, a 3-hydroxypropyl group, a 3-methoxypropyl group, or a 1,1-bis(hydroxymethyl)-2-hydroxyethyl group. The number of the substituents is preferably 1 to 6, and more preferably 1 to 3. R a10 and R a11 The combination of R a10 and R a11 and the other is a 2-hydroxyethyl group, a 1,1-dimethyl-2-hydroxyethyl group, a 1,1-bis(hydroxymethyl)ethyl group, or a 2-(2-hydroxyethoxy)ethyl group (secondary amine).

[0029] As the pseudo-sphingosine, R 9 is an isostearyl group, and X 9 is a hydrogen atom, and R a10 is a hydrogen atom, and R a11 is preferably an alkyl group substituted with 1 to 3 groups selected from a hydroxyl group and a hydroxyalkoxy group, such as a 2-hydroxyethyl group, a 1,1-dimethyl-2-hydroxyethyl group, a 1,1-bis(hydroxymethyl)ethyl group, or a 2-(2-hydroxyethoxy)ethyl group. Specific examples of suitable pseudo-sphingosines include the following pseudo-sphingosines (i) to (iv): Among these, pseudo-sphingosine (ii) is preferred, and 1-(2-hydroxyethylamino)-3-isostearyloxy-2-propanol is more preferred. The pseudo-sphingosine to be used may be a commercially available product or one synthesized according to a conventional method.

[0030] [ka]

[0031] Examples of these sphingosine and pseudosphingosine salts include acidic amino acid salts such as glutamic acid and aspartic acid; basic amino acid salts such as arginine; inorganic acid salts such as phosphoric acid and hydrochloric acid; monocarboxylates such as acetic acid; dicarboxylates such as succinic acid; and oxycarboxylates such as citric acid, lactic acid, and malic acid. Among these, as the salt of sphingosine and the salt of pseudosphingosine, succinate, lactate, arginine and glutamate are preferred, and glutamate is more preferred. Among the above-mentioned sphingosine, sphingosine salts, pseudosphingosine, and pseudosphingosine salts, only one may be used alone, or two or more may be used in combination. Among sphingosine, sphingosine salts, pseudosphingosine, and pseudosphingosine salts, pseudosphingosine and pseudosphingosine salts are preferred from the viewpoint of storage stability, etc.

[0032] Examples of the anionic surfactants among the compounds of component (A) include fatty acid salts (preferably fatty acid salts having 12 to 24 carbon atoms) such as sodium laurate, potassium palmitate, and arginine stearate; alkyl sulfate salts (preferably alkyl sulfate salts having 12 to 24 carbon atoms) such as sodium lauryl sulfate, potassium lauryl sulfate, and sodium cetyl sulfate; polyoxyethylene alkyl ether sulfate salts (preferably polyoxyethylene alkyl ether sulfate salts having 12 to 24 carbon atoms) such as polyoxyethylene lauryl ether triethanolamine sulfate; N-acyl sarcosine salts (preferably N-acyl sarcosine salts having an acyl group having 12 to 24 carbon atoms) such as sodium lauroyl sarcosine; alkyl phosphates (preferably alkyl phosphates having 12 to 24 carbon atoms) such as sodium monostearyl phosphate; polyoxyethylene oleyl ether sodium phosphate, polyoxyethylene stearyl ether sodium phosphate, and the like. polyoxyethylene alkyl ether phosphates (preferably polyoxyethylene alkyl ether phosphates having 12 to 24 carbon atoms); dialkyl sulfosuccinates (preferably di(alkyl)sulfosuccinates having 6 to 12 carbon atoms) such as sodium di(2-ethylhexyl)sulfosuccinate; N-alkyloylmethyl taurine salts (preferably having an alkyloyl group having 12 to 24 carbon atoms) such as sodium N-stearoyl-N-methyl taurine and sodium N-myristoyl-N-methyl taurine. N-acyl glutamates (preferably N-acyl glutamates having an acyl group having 12 to 24 carbon atoms), such as monosodium N-lauroyl-L-glutamate, sodium N-myristoyl-L-glutamate, sodium N-stearoyl-L-glutamate, disodium N-stearoyl-L-glutamate, potassium N-stearoyl-L-glutamate, and arginine N-stearoyl-L-glutamate. Among these anionic surfactants, only one may be used alone, or two or more may be used in combination.

[0033] Among these anionic surfactants, N-acylglutamic acid salts having an acyl group having 12 to 24 carbon atoms, fatty acid salts having 12 to 24 carbon atoms, and polyoxyethylene alkyl ether phosphates having 12 to 24 carbon atoms are preferred, N-acylglutamic acid salts having an acyl group having 12 to 24 carbon atoms are more preferred, N-acylglutamic acid salts having an acyl group having 12 to 20 carbon atoms are even more preferred, and N-stearoyl-L-glutamic acid salt is particularly preferred. The anionic surfactant may be a commercially available product or one synthesized according to a conventional method.

[0034] Among the compounds of component (A), examples of cationic surfactants include quaternary ammonium salt cationic surfactants and amine salt cationic surfactants, with quaternary ammonium salt cationic surfactants being preferred. Examples of amine salt cationic surfactants include alkylamine salts. Among such cationic surfactants, a quaternary ammonium salt type cationic surfactant represented by the following general formula (7) is preferred.

[0035] [ka]

[0036] [In formula (7), R 31 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms, R 32 represents an alkyl group having 1 to 4 carbon atoms, R 33 and R 34 each independently represents an alkyl group having 1 to 4 carbon atoms, or a linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 6 or more carbon atoms, AN - represents a salt-forming anion.

[0037] In formula (7), R 31 , R 33 and R 34The "straight-chain, branched-chain or cyclic saturated or unsaturated hydrocarbon group" represented by the formula (I) preferably has 6 to 30 carbon atoms, more preferably 8 to 24 carbon atoms, further preferably 12 to 22 carbon atoms, and particularly preferably 16 to 20 carbon atoms. Examples of the hydrocarbon group include an alkyl group, an alkenyl group, and an aralkyl group. Among these, the alkyl group and the alkenyl group are preferred, and the alkyl group is more preferred. The number of carbon atoms in the alkyl group is preferably 6 to 30, more preferably 8 to 24, further preferably 12 to 22, and particularly preferably 16 to 20, as described above. The alkyl group may be linear or branched. Examples of the alkyl group include an octyl group, a nonyl group, a decyl group, an undecyl group, a 1-methyldecyl group, a dodecyl group, a 1-methylundecyl group, a 1-ethyldecyl group, a tridecyl group, a tetradecyl group, a pentadecyl group, a hexadecyl group, an octadecyl group, and a behenyl group. The alkenyl group may be linear or branched, and examples thereof include a decenyl group, an undecenyl group, a dodecenyl group, a tetradecenyl group, and a hexadecenyl group. Examples of the aralkyl group include a benzyl group and a phenethyl group.

[0038] R 32 , R 33 and R 34 The number of carbon atoms in the "alkyl group having 1 to 4 carbon atoms" represented by the formula (I) is preferably 1 or 2, and particularly preferably 1. The alkyl group may be linear or branched. Examples of the alkyl group include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, and an isobutyl group.

[0039] R 33 and R 34 The combination of R 33 and R 34 are both alkyl groups having 1 to 4 carbon atoms; 33 and R 34 one of the groups is an alkyl group having 1 to 4 carbon atoms, and the remaining groups are linear, branched or cyclic saturated or unsaturated hydrocarbon groups having 6 or more carbon atoms; 33 and R34 and R are both linear, branched or cyclic saturated or unsaturated hydrocarbon groups having 6 or more carbon atoms. 33 and R 34 are both alkyl groups having 1 to 4 carbon atoms; 33 and R 34 and the remaining are linear, branched or cyclic saturated or unsaturated hydrocarbon groups having 6 or more carbon atoms. 33 and R 34 It is more preferable that one of the groups is an alkyl group having 1 to 4 carbon atoms, and the remaining groups are linear, branched or cyclic saturated or unsaturated hydrocarbon groups having 6 or more carbon atoms.

[0040] In addition, in equation (7), AN - represents a salt-forming anion, examples of which include halide ions (e.g., chloride ion, iodide ion), sulfate ion, phosphate ion, acetate ion, lactate ion, p-toluenesulfonate ion, perchlorate ion, and monoalkyl nitrate ions (e.g., methyl sulfate ion, ethyl sulfate ion), among which halide ions are preferred.

[0041] Examples of cationic surfactants include alkyltrimethylammonium salts such as octyltrimethylammonium chloride, decyltrimethylammonium chloride, lauryltrimethylammonium chloride, tetradecyltrimethylammonium chloride, hexadecyltrimethylammonium chloride, hexadecyltrimethylammonium bromide, stearyltrimethylammonium chloride, and behenyltrimethylammonium chloride; dialkyldimethylammonium salts such as didecyldimethylammonium chloride and distearyldimethylammonium chloride; and trialkylmethylammonium salts. Among these cationic surfactants, only one type may be used alone, or two or more types may be used in combination. Among these cationic surfactants, dialkyldimethylammonium salts are preferred, one or more selected from didecyldimethylammonium chloride and distearyldimethylammonium chloride are more preferred, and distearyldimethylammonium chloride is even more preferred. The cationic surfactant may be a commercially available product or one synthesized according to a conventional method.

[0042] The compound of component (A) may be used alone or in combination of two or more, but it is preferable to use at least one or two or more selected from sphingosine, sphingosine salts, pseudosphingosine and pseudosphingosine salts from the viewpoints of storage stability, lack of unevenness when a foundation is applied over the coating film, etc. Among them, it is more preferable to use at least one or two or more selected from phytosphingosine, phytosphingosine salts, pseudo-sphingosine (ii) and pseudo-sphingosine (ii) salts, and it is particularly preferable to use at least one or two or more selected from phytosphingosine, phytosphingosine salts, 1-(2-hydroxyethylamino)-3-isostearyloxy-2-propanol and 1-(2-hydroxyethylamino)-3-isostearyloxy-2-propanol salts. When at least one or more selected from sphingosine, a salt of sphingosine, a pseudosphingosine, and a salt of pseudosphingosine are used, one or more selected from an anionic surfactant and a cationic surfactant may further be contained.

[0043] The content of component (A) in the emulsion composition of the present invention is preferably 0.001% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, and particularly preferably 0.2% by mass or more, from the viewpoints of storage stability, safety, and the absence of unevenness when foundation is applied over the coating film, as well as improving the skin so that makeup can be applied and lasts well when makeup is applied; and the content of component (A) in the emulsion composition of the present invention is preferably 5% by mass or less, more preferably 1.5% by mass or less, even more preferably 1% by mass or less, even more preferably 0.8% by mass or less, and particularly preferably 0.5% by mass or less, from the viewpoints of storage stability, safety, and the absence of unevenness when foundation is applied over the coating film, as well as improving the skin so that makeup can be applied and lasts well when makeup is applied. Specifically, the content of component (A) in the emulsion composition of the present invention is preferably 0.001% by mass or more and 5% by mass or less, more preferably 0.05% by mass or more and 1.5% by mass or less, even more preferably 0.1% by mass or more and 1% by mass or less, even more preferably 0.2% by mass or more and 0.8% by mass or less, and particularly preferably 0.2% by mass or more and 0.5% by mass or less. When the content of component (A) is 0.5% by mass or less, the coating film is particularly excellent in terms of the absence of unevenness when a foundation is applied over it, and in the makeup application and makeup wear after short-term continuous use and washing. In this specification, the contents of sphingosine, sphingosine salt, pseudosphingosine, pseudosphingosine salt, and anionic surfactant in the emulsion composition of component (A) are expressed as mass converted into acid. The same applies to the mass ratio of component (A) to other components hereinafter.

[0044] The content mass ratio of component (A) to the polymer of component (E) [(A) / (E)] is preferably 0.005 or more, more preferably 0.01 or more, even more preferably 0.05 or more, and particularly preferably 0.1 or more, from the viewpoint of improving the skin to have good makeup application and makeup retention when makeup is applied, as well as the absence of unevenness when foundation is applied over the coating film, and is preferably 2 or less, more preferably 1.5 or less, even more preferably 1 or less, and particularly preferably 0.5 or less, from the viewpoint of improving the skin to have good makeup application and makeup retention when makeup is applied, as well as the absence of unevenness when foundation is applied over the coating film. The specific range is preferably 0.005 or more and 2 or less, more preferably 0.01 or more and 1.5 or less, even more preferably 0.05 or more and 1 or less, and particularly preferably 0.1 or more and 0.5 or less. When the content mass ratio [(A) / (E)] is 0.1 or more, the coating film is particularly excellent in terms of the absence of unevenness when foundation is applied over it, and in terms of the application and durability of makeup even after short-term continuous use and washing.

[0045] <Ingredient (B)> The emulsion composition of the present invention contains (B) ceramides. The ceramides include those represented by the general formula (4).

[0046] [ka]

[0047] [In formula (4), R 11 represents a linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 4 to 30 carbon atoms which may be substituted with a hydroxyl group, a carbonyl group or an amino group, or a hydrogen atom; Z represents a methylene group, a methine group, or an oxygen atom; X 11 , X 12 and X 13 each independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group, X 14represents a hydrogen atom, an acetyl group, or a glyceryl group, or forms an oxo group together with the adjacent oxygen atom (provided that when Z is a methine group, X 11 and X 12 One of X is a hydrogen atom and the other is not present. 14 When forms an oxo group, X 13 does not exist. ); R 12 and R 13 each independently represents a hydrogen atom, a hydroxyl group, a hydroxyalkyl group (e.g., a hydroxymethyl group, a hydroxyethyl group, etc.), or an acetoxymethyl group; R 14 represents a linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 5 to 60 carbon atoms which may be substituted with a hydroxyl group, a carbonyl group or an amino group and which may have an ether bond, an ester bond or an amide bond in the main chain; R 15 represents a hydrogen atom or a linear or branched, saturated or unsaturated hydrocarbon group having a total of 1 to 30 carbon atoms, which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group (R 11 When is a hydrogen atom and Z is an oxygen atom, R 15 is preferably a hydrocarbon group having a total of 10 to 30 carbon atoms which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group, and R 11 When is a hydrocarbon group, R 15 represents a hydrogen atom or a hydrocarbon group having a total of 1 to 8 carbon atoms, which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group; The dashed lines indicate that the bond may be an unsaturated bond.

[0048] In formula (4), R 11The "linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 4 to 30 carbon atoms which may be substituted with a hydroxyl group, a carbonyl group or an amino group" represented by the formula (I) is preferably a linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 7 to 22 carbon atoms which may be substituted with a hydroxyl group. Z represents a methylene group, a methine group or an oxygen atom.

[0049] X 11 , X 12 and X 13 Each of X independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group. 11 , X 12 and X 13 The combination of X 11 , X 12 and X 13 A combination in which 0 to 1 of Z is a hydroxyl group and the remaining are hydrogen atoms is preferred. 11 and X 12 Only one of these is a hydrogen atom, and the other is absent. Also, X 14 is preferably a hydrogen atom or a glyceryl group. R 12 and R 13 each independently represents a hydrogen atom, a hydroxyl group, a hydroxyalkyl group (e.g., a hydroxymethyl group, a hydroxyethyl group, etc.), or an acetoxymethyl group, and preferred R 12 is a hydrogen atom or a hydroxymethyl group, and preferred R 13 is a hydrogen atom.

[0050] R 14 R represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 5 to 60 carbon atoms, which may be substituted with a hydroxyl group, a carbonyl group or an amino group and which may have an ether bond, an ester bond or an amide bond in the main chain. 14Examples of the fatty acid include linear, branched or cyclic, saturated or unsaturated hydrocarbon groups having 5 to 35 carbon atoms which may be substituted with a hydroxyl group or an amino group, and linear, branched or cyclic, saturated or unsaturated fatty acid having 8 to 22 carbon atoms which may be substituted with a hydroxyl group, which is bonded via an ester bond or amide bond to the ω-position of the hydrocarbon group. The fatty acid to be bonded is preferably isostearic acid, 12-hydroxystearic acid or linoleic acid.

[0051] R 15 represents a hydrogen atom or a linear or branched, saturated or unsaturated hydrocarbon group having a total of 1 to 30 carbon atoms which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group. R 11 When is a hydrogen atom and Z is an oxygen atom, R 15 is preferably a hydrocarbon group having a total of 10 to 30 carbon atoms which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group. 11 When is a hydrocarbon group, R 15 represents preferably a hydrogen atom or a hydrocarbon group having a total of 1 to 8 carbon atoms which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group, and more preferably represents a hydrogen atom or a hydrocarbon group having a total of 1 to 8 carbon atoms which may be substituted with 1 to 3 substituents selected from a hydroxyl group, a hydroxyalkoxy group, and an alkoxy group. Here, the hydroxyalkoxy group and alkoxy group preferably have a carbon number of 1 to 7.

[0052] As the ceramides, naturally occurring ceramides represented by the following general formula (5) or synthetic products having the same structure and derivatives thereof (hereinafter also referred to as natural ceramides), or pseudo-type ceramides represented by the following general formula (6) (hereinafter also referred to as pseudo-type ceramides) are preferred. Among the natural ceramides and pseudo-type ceramides, the pseudo-type ceramides are preferred from the viewpoint of productivity, etc.

[0053] [ka]

[0054] [In formula (5), R 21 represents a linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 7 to 19 carbon atoms which may be substituted with a hydroxyl group; Z 1 represents a methylene group or a methine group; X 15 , X 16 , and X 17 each independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group; X 18 represents a hydrogen atom or forms an oxo group together with the adjacent oxygen atom (provided that Z 1 When is a methine group, X 15 and X 16 One of X is a hydrogen atom and the other is not present. 18 When forms an oxo group, X 17 does not exist. ); R 22 represents a hydroxyalkyl group (e.g., a hydroxymethyl group, a hydroxyethyl group, etc.) or an acetoxymethyl group; R 23 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R 24 represents a linear, branched or cyclic, saturated or unsaturated hydrocarbon group (the hydrocarbon group is preferably an alkyl group) having 5 to 30 carbon atoms which may be substituted with a hydroxyl group, or a linear or branched, saturated or unsaturated fatty acid having 8 to 22 carbon atoms which may be substituted with a hydroxyl group which is ester-bonded to the ω-terminus of the hydrocarbon group (the hydrocarbon group is preferably an alkyl group); The dashed lines indicate that the bond may be an unsaturated bond.

[0055] [ka]

[0056] [In formula (6), R 25represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 10 to 22 carbon atoms which may be substituted with a hydroxyl group, or a hydrogen atom; X 19 represents a hydrogen atom, an acetyl group, or a glyceryl group; R 26 represents a linear, branched or cyclic, saturated or unsaturated hydrocarbon group (the hydrocarbon group is preferably an alkyl group) having 5 to 22 carbon atoms which may be substituted with a hydroxyl group or an amino group, or a linear or branched, saturated or unsaturated fatty acid having 8 to 22 carbon atoms which may be substituted with a hydroxyl group is ester-bonded to the ω-terminus of the hydrocarbon group (the hydrocarbon group is preferably an alkyl group); R 27 represents a hydrogen atom or a hydrocarbon group having a total of 1 to 30 carbon atoms (the hydrocarbon group is preferably an alkyl group) which may be substituted with a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, or an acetoxy group.

[0057] Here, the natural ceramide represented by the general formula (5) will be described. In formula (5), R 21 The number of carbon atoms in the hydrocarbon group represented by R is 7 to 19, preferably 11 to 15, and more preferably 13 to 15. 21 The hydrocarbon group represented by the formula (I) is preferably a straight-chain alkyl group. X 18 represents a hydrogen atom or forms an oxo group together with the adjacent oxygen atom. Also, R 24 R is preferably a linear alkyl group having 9 to 27 carbon atoms which may be substituted with a hydroxyl group, or a group in which linoleic acid is ester-bonded to the ω-terminus of the alkyl group. 24 As the alkyl group, a tricosyl group, a 1-hydroxypentadecyl group, a 1-hydroxytricosyl group, a heptadecyl group, a 1-hydroxyundecyl group, a nonacosyl group in which linoleic acid is ester-bonded at the ω-position, and a pentacosyl group are more preferable.

[0058] Specific examples of natural ceramides include ceramides Types 1 to 7 in which sphingosine, dihydrosphingosine, phytosphingosine, or sphingadienine are amidated (e.g., porcine and human ceramides described in Figure 2 of J. Lipid Res., 24:759 (1983) and Figure 4 of J. Lipid. Res., 35:2069 (1994)). Furthermore, N-alkylated forms (eg, N-methylated forms) of these ceramides are also included in natural ceramides. These ceramides may be optically active in the natural form (D(-) form), optically active in the non-natural form (L(+) form), or a mixture of the natural and non-natural forms. The relative configuration of the above compounds may be that of the natural form, or may be that of a non-natural form, or may be a mixture of these. Among the natural ceramides, the compounds CERAMIDE 1, CERAMIDE 2, CERAMIDE 3, CERAMIDE 5, and CERAMIDE 6II (all of which are listed in INCI, 8th Edition) and those represented by the following formula are particularly preferred.

[0059] [ka]

[0060] These may be either natural extracts or synthetic substances, and commercially available products can be used. Commercially available examples of such natural ceramides include Ceramide I, Ceramide II, Ceramide III, Ceramide IIIA, Ceramide IIIB, Ceramide IIIC, Ceramide VI (all manufactured by Cosmopharm Co., Ltd.), Ceramide TIC-001 (manufactured by Takasago International Co., Ltd.), CERAMIDE II (manufactured by Quest International), DS-Ceramide VI, DS-CLA-Phytoceramide, C6-Phytoceramide, DS-ceramide Y3S (manufactured by DOOSAN Co., Ltd.), and CERAMIDE2 (manufactured by SEDERMA Co., Ltd.).

[0061] [ka]

[0062] Next, the pseudo-ceramides represented by the general formula (6) will be described. In formula (6), R 26 As the alkyl group, a heptyl group, a 1-hydroxyheptyl group, a nonyl group, a tridecyl group, a pentadecyl group, an undecyl group having linoleic acid bonded to the ω-position by ester bonding, a pentadecyl group having linoleic acid bonded to the ω-position by ester bonding, a pentadecyl group having 12-hydroxystearic acid bonded to the ω-position by ester bonding, and an undecyl group having methyl-branched isostearic acid bonded to the ω-position by amide bonding are preferred. Also, R 25 If is a hydrogen atom, R 27 As the alkyl group, a hydrocarbon group having a total of 1 to 30 carbon atoms (the hydrocarbon group is preferably an alkyl group) which may be substituted with a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, or an acetoxy group is preferable, a hydrocarbon group having a total of 10 to 30 carbon atoms (the hydrocarbon group is preferably an alkyl group) which may be substituted with a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, or an acetoxy group is more preferable, and an alkyl group having a total of 12 to 20 carbon atoms is particularly preferable. R 25 is a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 10 to 22 carbon atoms which may be substituted with a hydroxyl group, R 27 is preferably a hydrogen atom or an alkyl group having a total of 1 to 8 carbon atoms which may be substituted with a hydroxyl group, a hydroxyalkoxy group, an alkoxy group or an acetoxy group. R 27 The hydroxyalkoxy group or alkoxy group in the formula (I) preferably has 1 to 7 carbon atoms.

[0063] Among pseudo-ceramides, R in the general formula (6) 25 is a hexadecyl group, X 19 is a hydrogen atom, R 26 is a pentadecyl group, R 27is a hydroxyethyl group; R in the general formula (6) 25 is a hexadecyl group, X 19 is a hydrogen atom, R 26 is a nonyl group, R 27 is a hydroxyethyl group; R in the general formula (6) 25 is a hexadecyl group, X 19 is a glyceryl group, R 26 is a tridecyl group, R 27 is a 3-methoxypropyl group; R in the general formula (6) 25 is a hydrogen atom, X 19 is a hydrogen atom, R 26 is a pentadecyl group, R 27 is a dodecyl group; R in the general formula (6) 25 is a hydrogen atom, X 19 is a hydrogen atom, R 26 is a 1-hydroxyheptyl group, R 27 is preferably a dodecyl group, R in general formula (6) 25 is a hexadecyl group, X 19 is a hydrogen atom, R 26 is a pentadecyl group, R 27 is a hydroxyethyl group; R in the general formula (6) 25 is a hexadecyl group, X 19 is a hydrogen atom, R 26 is a nonyl group, R 27 is a hydroxyethyl group; R in the general formula (6) 25 is a hexadecyl group, X 19 is a glyceryl group, R 26 is a tridecyl group, R 27 is more preferably a 3-methoxypropyl group, R in general formula (6) 25 is a hexadecyl group, X 19 is a hydrogen atom, R 26 is a pentadecyl group, R 27 Of these, those in which the alkyl group is a hydroxyethyl group (N-(hexadecyloxyhydroxypropyl)-N-hydroxyethylhexadecanamide) are particularly preferred.

[0064] [ka]

[0065] [ka]

[0066] The ceramides of component (B) may be used alone or in combination of two or more.

[0067] The content of component (B) is preferably 0.001% by mass or more, more preferably 0.05% by mass or more, even more preferably 1% by mass or more, and particularly preferably 1.5% by mass or more in the emulsion composition of the present invention from the viewpoints of storage stability, safety, and the absence of unevenness when foundation is applied over the coating film, as well as the improvement of the skin with good makeup application and makeup retention when makeup is applied. Also, from the viewpoints of storage stability, safety, and the absence of unevenness when foundation is applied over the coating film, as well as the improvement of the skin with good makeup application and makeup retention when makeup is applied, the content of component (B) is preferably 10% by mass or less, more preferably 7% by mass or less, even more preferably 5% by mass or less, and particularly preferably 4% by mass or less in the emulsion composition of the present invention. As a specific range, in the emulsion composition of the present invention, 0.001% by mass or more and 10% by mass or less are preferred, 0.05% by mass or more and 7% by mass or less are more preferred, 1% by mass or more and 5% by mass or less are even more preferred, and 1.5% by mass or more and 4% by mass or less are particularly preferred. When the content of component (B) is 5% by mass or less, the coating film is particularly excellent in terms of being free of unevenness when a foundation is applied on top of the coating film.

[0068] The content mass ratio of component (B) to the polymer of component (E) [(B) / (E)] is preferably 0.05 or more, more preferably 0.1 or more, even more preferably 0.5 or more, and particularly preferably 0.75 or more, from the viewpoints of storage stability, safety, and the absence of unevenness when a foundation is applied over the coating film, as well as improving the skin to have good makeup application and makeup retention when makeup is applied, and is preferably 15 or less, more preferably 10 or less, even more preferably 7.5 or less, and particularly preferably 5 or less, from the viewpoints of storage stability, safety, and the absence of unevenness when a foundation is applied over the coating film, as well as improving the skin to have good makeup application and makeup retention when makeup is applied. The specific range is preferably 0.05 or more and 15 or less, more preferably 0.1 or more and 10 or less, even more preferably 0.5 or more and 7.5 or less, and particularly preferably 0.75 or more and 5 or less.

[0069] <Ingredient (C)> The emulsion composition of the present invention contains (C) a glycerin fatty acid ester. As the glycerin fatty acid ester, from the viewpoint of emulsion stability, glycerin mono fatty acid ester is preferred. As the glycerin mono fatty acid ester, those having a residue of a fatty acid having 10 to 24 carbon atoms are preferred, those having a residue of a fatty acid having 16 to 24 carbon atoms are more preferred, and those having a residue of a fatty acid having 18 to 24 carbon atoms are particularly preferred. In addition, the "fatty acid" constituting the glycerin mono fatty acid ester may be a saturated fatty acid or an unsaturated fatty acid, and may be a straight-chain fatty acid or a branched fatty acid. As the glycerin mono fatty acid ester, those having a residue of a saturated fatty acid are preferred, and those having a residue of a straight-chain saturated fatty acid are more preferred. Examples of glycerin monofatty acid esters include glycerin monolaurate, glycerin monomyristate, glycerin monopalmitate, glycerin monostearate, glycerin monobehenate, glycerin monooleate, glycerin monoisostearate, glycerin monolinoleate, etc. Among these, glycerin monostearate and glycerin monobehenate are preferred. The glycerin fatty acid ester of component (C) may be used alone or in combination of two or more.

[0070] The content of component (C) in the emulsion composition of the present invention is preferably 0.001% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, and particularly preferably 0.5% by mass or more, from the viewpoints of storage stability, safety, and the absence of unevenness when foundation is applied over the coating film, as well as improving the skin so that makeup can be applied and lasts well when makeup is applied; and the content of component (C) in the emulsion composition of the present invention is preferably 10% by mass or less, more preferably 7% by mass or less, even more preferably 5% by mass or less, even more preferably 3% by mass or less, and particularly preferably 1.6% by mass or less, from the viewpoints of storage stability, safety, and the absence of unevenness when foundation is applied over the coating film, as well as improving the skin so that makeup can be applied and lasts well when makeup is applied. Specifically, the content of component (C) in the emulsion composition of the present invention is preferably 0.001% by mass or more and 10% by mass or less, more preferably 0.05% by mass or more and 7% by mass or less, even more preferably 0.1% by mass or more and 5% by mass or less, even more preferably 0.5% by mass or more and 3% by mass or less, and particularly preferably 0.5% by mass or more and 1.6% by mass or less. When the content of component (C) is 3% by mass or less or 1.6% by mass or less, the coating film is particularly excellent in terms of the lack of unevenness when a foundation is applied on top of the coating film.

[0071] The mass ratio of component (C) to the polymer of component (E) [(C) / (E)] is preferably 0.01 or more, more preferably 0.05 or more, even more preferably 0.1 or more, and particularly preferably 0.3 or more, from the viewpoints of preventing unevenness when a foundation is applied over the coating film and improving the skin to have good makeup application and makeup retention when makeup is applied, and is preferably 10 or less, more preferably 5 or less, even more preferably 3 or less, and particularly preferably 1 or less, from the viewpoints of preventing unevenness when a foundation is applied over the coating film and improving the skin to have good makeup application and makeup retention when makeup is applied. The specific range is preferably 0.01 or more and 10 or less, more preferably 0.05 or more and 5 or less, even more preferably 0.1 or more and 3 or less, and particularly preferably 0.3 or more and 1 or less. When the content mass ratio [(C) / (E)] is 0.3 or more, the coating film is particularly excellent in terms of the absence of unevenness when foundation is applied over it, and in terms of the application and durability of makeup after short-term continuous use and washing.

[0072] <Ingredient (D)> The emulsion composition of the present invention contains (D) a higher alcohol. The higher alcohol is preferably a monohydric alcohol having 10 to 24 carbon atoms, more preferably a monohydric alcohol having 12 to 22 carbon atoms, and particularly preferably a monohydric alcohol having 14 to 22 carbon atoms. The higher alcohol may be linear or branched, and may be a saturated or unsaturated alcohol, but is preferably a linear saturated or unsaturated alcohol. Examples of higher alcohols include lauryl alcohol, myristyl alcohol, cetanol, stearyl alcohol, behenyl alcohol, oleyl alcohol, etc. Among these, cetanol, stearyl alcohol, and behenyl alcohol are preferred, and cetanol and behenyl alcohol are more preferred. The higher alcohol of component (D) may be used alone or in combination of two or more kinds.

[0073] The content of component (D) is preferably 0.001% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, and particularly preferably 0.6% by mass or more in the emulsion composition of the present invention from the viewpoints of storage stability, safety, and the absence of unevenness when foundation is applied over the coating film, as well as the improvement of the skin with good makeup application and makeup retention when makeup is applied. Also, from the viewpoints of storage stability, safety, and the absence of unevenness when foundation is applied over the coating film, as well as the improvement of the skin with good makeup application and makeup retention when makeup is applied, the content of component (D) is preferably 10% by mass or less, more preferably 7% by mass or less, even more preferably 5% by mass or less, and particularly preferably 3% by mass or less in the emulsion composition of the present invention. As a specific range, in the emulsion composition of the present invention, 0.001% by mass or more and 10% by mass or less are preferred, 0.05% by mass or more and 7% by mass or less are more preferred, 0.1% by mass or more and 5% by mass or less are even more preferred, and 0.6% by mass or more and 3% by mass or less are particularly preferred.

[0074] The content mass ratio of component (D) to the polymer of component (E) [(D) / (E)] is preferably 0.01 or more, more preferably 0.05 or more, even more preferably 0.1 or more, and particularly preferably 0.3 or more, from the viewpoints of preventing unevenness when a foundation is applied over the coating film and improving the skin to have good makeup application and makeup retention when makeup is applied, and is preferably 10 or less, more preferably 5 or less, even more preferably 3 or less, and particularly preferably 1 or less. The specific range is preferably 0.01 or more and 10 or less, more preferably 0.05 or more and 5 or less, even more preferably 0.1 or more and 3 or less, and particularly preferably 0.3 or more and 1 or less. When the content mass ratio [(D) / (E)] is 0.3 or more, the coating film is particularly excellent in terms of the absence of unevenness when foundation is applied over it, and in terms of the application and durability of makeup after short-term continuous use and washing.

[0075] The mass ratio of the component (B) to the total of the components (B), (C) and (D) [(B) / {(B)+(C)+(D)}] is preferably 0.1 or more, more preferably 0.2 or more, from the viewpoint of obtaining a gel having an α-type structure with excellent storage stability, and is preferably 1 or less, more preferably 0.75 or less, and particularly preferably 0.6 or less, from the viewpoint of obtaining a gel having an α-type structure with excellent storage stability. As a specific range, 0.1 or more and 1 or less are preferred, 0.1 or more and 0.75 or less are more preferred, and 0.2 or more and 0.6 or less are particularly preferred.

[0076] The mass ratio of the component (C) to the total of the components (C) and (D) [(C) / {(C)+(D)}] is preferably 0.1 or more, more preferably 0.25 or more, from the viewpoint of obtaining a gel having an α-type structure with excellent storage stability, and is preferably 1 or less, more preferably 0.75 or less, and particularly preferably 0.65 or less, from the viewpoint of obtaining a gel having an α-type structure with excellent storage stability. As a specific range, 0.1 or more and 1 or less are preferred, 0.1 or more and 0.75 or less are more preferred, and 0.25 or more and 0.65 or less are particularly preferred.

[0077] <Ingredient (E)> The emulsion composition of the present invention contains (E) a polymer having a light transmittance of 90% or more when measured at 25°C after mixing 25 parts by mass with 100 parts by mass of cetanol at 85°C, and a glass transition temperature Tg of the main chain of the polymer being 25°C or less.

[0078] The polymer of component (E) has a main chain glass transition temperature Tg of 25° C. or lower. The glass transition temperature Tg of the main chain is preferably 15° C. or lower, more preferably 0° C. or lower, even more preferably −25° C. or lower, still more preferably −50° C. or lower, and particularly preferably −100° C. or lower, from the viewpoints of preventing unevenness when a foundation is applied over the coating film, and improving the skin so that makeup can be applied and lasts well when makeup is applied. The lower limit of the glass transition temperature Tg of the main chain is not particularly limited, and is, for example, −150° C. In this specification, the glass transition temperature Tg of the main chain refers to that measured by differential scanning calorimetry (DSC) or the like, and can be determined, for example, by measuring the glass transition temperature Tg of the raw material polymer of the polymer of component (E) corresponding to the main chain portion of the polymer of component (E) by DSC, or by measuring the glass transition temperature Tg of a polymer obtained by removing the parts other than the main chain portion from the polymer of component (E) by chemical reaction by DSC. However, when the polymer of component (E) is a terminally modified polymer such as a terminally modified silicone, the segment introduced at the end is not included in the "main chain" when measuring the glass transition temperature Tg of the main chain. For example, the "glass transition temperature Tg of the main chain" of a polyether / alkyl co-modified silicone in which an alkyl group has been introduced into the side chain or end of a copolymer having a silicone chain and a polyether group, a polyglycerin / alkyl co-modified silicone in which an alkyl group has been introduced into the side chain or end of a copolymer having a silicone chain and a polyglyceryl group, and a double-end polyether-modified silicone means the glass transition temperature Tg of the silicone chain (organopolysiloxane segment) of these polymers.

[0079] Furthermore, the polymer of component (E) has a light transmittance of 90% or more when 25 parts by mass are mixed with 100 parts by mass of cetanol at 85°C and then measured at 25°C. The above light transmittance is preferably 92.5% or more, more preferably 95% or more, even more preferably 96% or more, and particularly preferably 98% or more, from the viewpoints of preventing unevenness when foundation is applied over the coating film, as well as improving the application and staying power of makeup when makeup is applied. The above light transmittance is usually less than 100%. In this specification, the light transmittance can be determined, for example, by measuring a mixed liquid obtained by mixing 100 parts by mass of cetanol and 25 parts by mass of a polymer at 85°C and then cooling the mixture to 25°C using the following apparatus and conditions.

[0080] (Apparatus and conditions for measuring light transmittance when mixed with cetanol) Equipment: Spectrophotometer Wavelength: 555nm Optical path length: 1cm Measurement cell: Quartz cell

[0081] The polymer of component (E) is preferably an amphiphilic polymer. In this specification, an amphiphilic polymer means a polymer that has a light transmittance of 90% or more when 25 parts by mass of the polymer are mixed with 100 parts by mass of cetanol at 85° C. and then measured at 25° C., and has a light transmittance of 75% or more when 4 parts by mass of the polymer are mixed with 100 parts by mass of water at 65° C. and then measured at 25° C. The light transmittance when mixed with cetanol is the same as above. Furthermore, when 4 parts by mass of the polymer are mixed with 100 parts by mass of water at 65°C and then the light transmittance is measured at 25°C, from the viewpoints of preventing unevenness when foundation is applied over the coating film, as well as improving the skin's ability to apply makeup smoothly and last longer when makeup is applied, the light transmittance is preferably 78% or more, more preferably 80% or more, even more preferably 83% or more, and particularly preferably 85% or more. Furthermore, the light transmittance when mixed with water is usually less than 100%, and preferably less than 95%. The light transmittance when mixed with water can be determined, for example, by measuring a mixed liquid obtained by mixing 4 parts by mass of the polymer with 100 parts by mass of water at 65°C and then cooling to 25°C using the following apparatus and conditions.

[0082] (Apparatus and conditions for measuring light transmittance when mixed with water) Equipment: Spectrophotometer Wavelength: 555nm Optical path length: 1mm Measurement cell: Quartz cell

[0083] Furthermore, from the viewpoints of preventing unevenness when foundation is applied over the coating film, as well as improving the application and staying power of makeup when makeup is applied, the polymer of component (E) preferably has a viscosity of 100 mPa·s or less, more preferably 50 mPa·s or less, and even more preferably 5 mPa·s or less, when 1 part by mass of the polymer is mixed with 100 parts by mass of water at 65°C and then measured at 25°C. The viscosity when 1 part by mass of the polymer is mixed with 100 parts by mass of water at 65°C and then measured at 25°C is usually 1.5 mPa·s or more. The viscosity can be determined, for example, by measuring a mixture obtained by mixing 1 part by mass of a polymer with 100 parts by mass of water at 65° C. and then cooling to 25° C. using the following apparatus and conditions. Viscosity measurement conditions: B-type viscometer (TV-B type, manufactured by Tokyo Keiki Co., Ltd.), rotor No. 1, rotation speed 60 rpm

[0084] In addition, the polymer of component (E) may be any of cationic polymers, anionic polymers, nonionic polymers, and amphoteric polymers. However, from the viewpoints of preventing unevenness when foundation is applied over the coating film, and improving the application and staying power of makeup when makeup is applied, cationic polymers and nonionic polymers are preferred, and cationic polymers are more preferred.

[0085] The cationic polymer may be any polymer having a charge density of more than 0 meq / g when measured by a zeta potential measuring device or the like, and may have a cationic group in the main chain or a cationic group in the side chain. Among these, the polymer having a cationic group in the side chain is preferred. Here, in this specification, the cationic group is a concept that includes groups having a cation such as a quaternary ammonium group, as well as groups that can become a cation when a proton is present in the system. For example, primary to tertiary amino groups, quaternary ammonium groups, biguanide residues, etc. can be mentioned. Among these, from the viewpoints of preventing unevenness when a foundation is applied over the coating film, and improving the skin to have good makeup application and makeup retention when makeup is applied, primary to tertiary amino groups and quaternary ammonium groups are preferred, primary to tertiary amino groups are more preferred, and secondary amino groups are particularly preferred.

[0086] When the polymer of component (E) is a cationic polymer, the charge density of the polymer is preferably 0.01 meq / g or more, more preferably 0.03 meq / g or more, even more preferably 0.05 meq / g or more, and particularly preferably 0.08 meq / g or more, from the viewpoints of preventing unevenness when a foundation is applied over the coating film, as well as improving the skin's ability to apply makeup and last longer when makeup is applied; and the charge density is preferably 10.0 meq / g or less, more preferably 9.0 meq / g or less, even more preferably 8.0 meq / g or less, and particularly preferably 2.0 meq / g or less, from the viewpoints of preventing unevenness when a foundation is applied over the coating film, as well as improving the skin's ability to apply makeup and last longer when makeup is applied. The specific range is preferably 0.01 meq / g or more and 10.0 meq / g or less, more preferably 0.03 meq / g or more and 9.0 meq / g or less, even more preferably 0.05 meq / g or more and 8.0 meq / g or less, and particularly preferably 0.08 meq / g or more and 2.0 meq / g or less. When an anionic surfactant is used as component (A), it may be, for example, 0.01 meq / g or more and less than 0.2 meq / g (preferably 0.01 meq / g or more and less than 0.15 meq / g, more preferably 0.03 meq / g or more and less than 0.1 meq / g). In this specification, the charge density of a cationic polymer refers to the amount of charge distribution per unit weight, and can be measured using a zeta potential measuring device or the like.

[0087] In addition, the polymer of component (E) preferably has one or more segments selected from organopolysiloxane segments, poly(N-acylalkyleneimine) segments, polyoxyalkylene segments, polyglycerin segments, alkyl segments, hydroxyalkyl segments (e.g., hydroxypropyl segments), and segments containing repetitions of structural units derived from unsaturated monomers. Examples of unsaturated monomers include (meth)acrylic acid, (meth)acrylate-based monomers, (meth)acrylamide-based monomers, and styrene-based monomers. Among these unsaturated monomers, (meth)acrylic acid; (meth)acrylate-based monomers such as methyl (meth)acrylate, ethyl (meth)acrylate, stearyl (meth)acrylate, and cyclohexyl (meth)acrylate are preferred. The polymer of component (E) may have the above-mentioned segments in the main chain or in the side chain, but from the viewpoint of preventing unevenness when foundation is applied over the coating film, and improving the skin when makeup is applied and the makeup lasting effect, it is preferable that the polymer has one or more segments selected from organopolysiloxane segments, polyoxyalkylene segments, and segments containing repeating structural units derived from unsaturated monomers as the main chain, and more preferably has an organopolysiloxane segment as the main chain. Note that when the polymer of component (E) contains an organopolysiloxane segment in the main chain (in the case of a silicone-based polymer), the "main chain" in the "glass transition temperature Tg of the main chain" is an organopolysiloxane segment. Also preferred are those having one or more types of segments selected from a poly(N-acylalkyleneimine) segment, a polyoxyalkylene segment, a polyglycerin segment and an alkyl segment as a side chain. Among these polymer types, the polymer of component (E) is preferably a graft polymer having an organopolysiloxane segment as the main chain and one or more types of segments selected from a poly(N-acylalkyleneimine) segment, a polyoxyalkylene segment, a polyglycerin segment, and an alkyl segment as a side chain, from the viewpoints of preventing unevenness when a foundation is applied over the coating film, as well as improving the application and durability of makeup when makeup is applied.

[0088] Specific examples of the polymer of component (E) include poly(N-acylalkyleneimine)-modified silicones (e.g., oxazoline-modified silicones), amino-modified silicones, polyether / alkyl co-modified silicones, polyglycerin / alkyl co-modified silicones, and both-end-type polyether-modified silicones. These may be used alone or in combination of two or more. Among these, from the viewpoints of preventing unevenness when foundation is applied over the coating film, as well as improving the application and staying power of makeup when makeup is applied, poly(N-acylalkyleneimine)-modified silicones, polyether / alkyl co-modified silicones, and polyglycerin / alkyl co-modified silicones are preferred, with poly(N-acylalkyleneimine)-modified silicones being particularly preferred.

[0089] (Poly(N-acylalkyleneimine) modified silicone) The poly(N-acylalkyleneimine)-modified silicone is preferably an organopolysiloxane in which a poly(N-acylalkyleneimine) segment consisting of a repeating unit represented by the following general formula (11) is bonded to at least two silicon atoms of an organopolysiloxane segment constituting the main chain via an alkylene group containing a heteroatom, in which the poly(N-acylalkyleneimine) segment has a number average molecular weight of 500 to 4000 and the organopolysiloxane segment constituting the main chain has a weight average molecular weight of 10000 to 200000 (hereinafter, this organopolysiloxane is also referred to as organopolysiloxane (OX)).

[0090] [ka]

[0091] [In formula (11), R 41 represents a hydrogen atom, an alkyl group having 1 to 22 carbon atoms, an aralkyl group, or an aryl group, and t represents 2 or 3.

[0092] Here, the organopolysiloxane (OX) will be described in detail. At least two poly(N-acylalkyleneimine) segments are bonded to any silicon atom constituting the organopolysiloxane segment via an alkylene group containing a heteroatom, and it is preferable that the poly(N-acylalkyleneimine) segment is bonded to one or more silicon atoms excluding those at both ends of the organopolysiloxane segment via the alkylene group, and it is more preferable that the poly(N-acylalkyleneimine) segment is bonded to two or more silicon atoms excluding those at both ends via the alkylene group.

[0093] The alkylene group containing a heteroatom functions as a linking group for the poly(N-acylalkyleneimine) segments. Examples of alkylene groups containing a heteroatom include alkylene groups having 2 to 20 carbon atoms and 1 to 3 nitrogen, oxygen or sulfur atoms. Among these, from the viewpoints of preventing unevenness when a foundation is applied over the coating film, and improving the skin's makeup application and makeup staying power when makeup is applied, preferred are groups represented by any of the following formulae (A1) to (A10), more preferred are groups represented by any of the formulae (A1) to (A4), and particularly preferred are groups represented by formulae (A1) or (A2). In the formula, An - represents a counter ion of a quaternary ammonium salt, examples of which include a halide ion (e.g., a chloride ion, an iodide ion), a sulfate ion, a phosphate ion, an acetate ion, a lactate ion, a p-toluenesulfonate ion, a perchlorate ion, and a monoalkyl nitrate ion (e.g., a methyl sulfate ion, an ethyl sulfate ion).

[0094] [ka]

[0095] In the N-acylalkyleneimine unit constituting the poly(N-acylalkyleneimine) segment, R 41 The number of carbon atoms of the alkyl group represented by the formula (I) is 1 to 22, preferably 1 to 14, more preferably 1 to 6, and particularly preferably 1 to 3. The alkyl group may be linear or branched. Examples of the alkyl group include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a tert-butyl group, a pentyl group, and a hexyl group. R 41 The aralkyl group represented by the formula (I) is preferably an aralkyl group having a carbon number of 7 to 15. Examples thereof include a benzyl group, a phenethyl group, a trityl group, a naphthylmethyl group, and an anthracenylmethyl group. R 41 The aryl group represented by the formula (I) is preferably an aryl group having a carbon number of 6 to 14. Examples thereof include a phenyl group, a tolyl group, a xylyl group, a naphthyl group, a biphenyl group, an anthracenyl group, and a phenanthryl group. Among these, R 41 As the alkyl group, a hydrogen atom or a linear or branched alkyl group having 1 to 3 carbon atoms is preferable, and a linear or branched alkyl group having 1 to 3 carbon atoms is more preferable. In the formula (11), t represents 2 or 3, with 2 being preferred.

[0096] The mass ratio (a / b) of the organopolysiloxane segment (a) constituting the main chain to the poly(N-acylalkyleneimine) segment (b) is preferably 45 / 55 to 82 / 18, more preferably 60 / 40 to 80 / 20, even more preferably 65 / 35 to 80 / 20, even more preferably 68 / 32 to 80 / 20, and particularly preferably 70 / 30 to 79 / 21, from the viewpoints of preventing unevenness when a foundation is applied over the coating film, and improving the texture of the skin so that makeup can be applied smoothly and lasts well when makeup is applied. In this specification, the mass ratio (a / b) is determined by dissolving 5% by mass of organopolysiloxane (OX) in deuterated chloroform and measuring the mass ratio by nuclear magnetic resonance ( 1 This refers to the value determined from the integral ratio of alkyl or phenyl groups in the organopolysiloxane segment to methylene groups in the poly(N-acylalkyleneimine) segment by H-NMR analysis.

[0097] In the organopolysiloxane (OX), the weight average molecular weight (hereinafter also referred to as "MWg") of the organopolysiloxane segment between adjacent poly(N-acylalkyleneimine) segments is preferably 1,000 to 40,000, more preferably 1,500 to 30,000, and particularly preferably 1,750 to 5,000, from the viewpoints of preventing unevenness when a foundation is applied over the coating film, and improving the skin's application and durability of makeup when makeup is applied.

[0098] In this specification, the term "organopolysiloxane segment between adjacent poly(N-acylalkyleneimine) segments" refers to a portion surrounded by a dashed line between the two points from the bonding point (bonding point A) of the poly(N-acylalkyleneimine) segment to the organopolysiloxane segment to the bonding point (bonding point B) of the adjacent poly(N-acylalkyleneimine) segment, as shown in the following formula (12), and is a region in which one R 42 SiO unit and one R 43 And y+1 (R 42 ) 2 The term "poly(N-acylalkyleneimine) segment" refers to a segment composed of the above R 43 -Z binds to 11 -R 44 This refers to.

[0099] [ka]

[0100] [In formula (12), R 42 each independently represents an alkyl group having 1 to 22 carbon atoms or a phenyl group; R 43 represents an alkylene group containing a heteroatom, -Z 11 -R 44 indicates a poly(N-acylalkyleneimine) segment, and R 44 represents a residue of a polymerization initiator or a hydrogen atom, and y represents a positive number. 42 , R 43 , R 44 may be the same or different.

[0101] MWg is the molecular weight of the portion enclosed by the dashed line in the above formula (12), and can be interpreted as the mass (g / mol) of the organopolysiloxane segment per mole of the poly(N-acylalkyleneimine) segment. When the functional groups of the modified organopolysiloxane of the raw material compound are 100% substituted with poly(N-acylalkyleneimine), it coincides with the functional group equivalent (g / mol) of the modified organopolysiloxane.

[0102] The molecular weight of the poly(N-acylalkyleneimine) segment can be calculated from the molecular weight and degree of polymerization of the N-acylalkyleneimine unit, or can be measured by gel permeation chromatography (GPC), but in this specification, it refers to the polystyrene-equivalent number average molecular weight (hereinafter also referred to as MNox) measured by GPC performed under the measurement conditions described below. MNox is preferably 800 to 3500, more preferably 1000 to 3000, from the viewpoints of preventing unevenness when foundation is applied over the coating film, and improving the skin to make the makeup stick and last better when makeup is applied.

[0103] Moreover, MWg can be calculated from the content (mass %) of organopolysiloxane segments constituting the main chain (hereinafter also referred to as Csi) according to the following formula (I).

[0104] MWg = Csi × MNox / (100-Csi) (I)

[0105] The weight average molecular weight (hereinafter also referred to as MWsi) of the organopolysiloxane segment constituting the main chain is preferably 15,000 to 160,000, more preferably 20,000 to 150,000, and particularly preferably 25,000 to 100,000, from the viewpoints of preventing unevenness when a foundation is applied over the coating film, and improving the application and staying power of makeup when makeup is applied. Since the organopolysiloxane segment constituting the main chain has a common skeleton with the modified organopolysiloxane of the raw material compound, the MWsi is approximately the same as the weight average molecular weight of the modified organopolysiloxane of the raw material compound. The weight average molecular weight of the modified organopolysiloxane of the raw material compound is a polystyrene-equivalent weight average molecular weight measured by GPC under the following measurement conditions:

[0106] (Conditions for measuring weight-average molecular weight of modified organopolysiloxane) Column: Super HZ4000+Super HZ2000 (Tosoh Corporation) Eluent: 1mM triethylamine / THF Flow rate: 0.35mL / min Column temperature: 40℃ Detector: UV Sample: 50μL

[0107] The weight average molecular weight (hereinafter also referred to as MWt) of the organopolysiloxane (OX) is preferably 12,000 to 200,000, more preferably 25,000 to 160,000, and particularly preferably 35,000 to 150,000, from the viewpoints of preventing unevenness when a foundation is applied over the coating film, and improving the application and durability of makeup when makeup is applied. MWt refers to a polystyrene-equivalent value measured by GPC under the measurement conditions described below.

[0108] (Measurement conditions for MNox and MWt) Column: Two K-804L (Tosoh Corporation) columns connected in series Eluent: 1mM dimethyldodecylamine / chloroform Flow rate: 1.0mL / min Column temperature: 40℃ Detector: RI Sample: 50μL

[0109] In addition, when the poly(N-acylalkyleneimine) segment is a poly(N-propionylethyleneimine) segment, the mass ratio (a / b) is calculated as follows: 1 H-NMR measurement can be carried out, for example, under the following conditions. ( 1 H-NMR measurement conditions) 0.5g of polymer sample was dissolved in 2g of measurement solvent (deuterated chloroform), 1 The measurement is performed using H-NMR (400 MHz, manufactured by Varian). The ratio of silicone to poly(N-propionylethyleneimine) is calculated from each integral value. PULSE SEQUENCE ·Relax.delay: 30 seconds ·Pulse: 45 degrees ·Number of times: 8 Confirmation peaks around 0 ppm: methyl groups of polydimethylsiloxane, Around 3.4 ppm: Methylene part of ethyleneimine.

[0110] The organopolysiloxane (OX) may be one obtained by synthesis according to the methods described in JP 2008-143820 A, JP 2009-24114 A, JP 2015-67603 A, etc. For example, it can be produced by reacting an organopolysiloxane modified with a functional group that induces the above-mentioned "alkylene group containing a hetero atom" with a terminally reactive poly(N-acylalkyleneimine) obtained by ring-opening polymerization of a cyclic iminoether corresponding to the repeating unit represented by general formula (11).

[0111] Specific examples of the organopolysiloxane (OX) used in the present invention include those prepared according to the description of Synthesis Example 2 in JP-A-2008-143820 (main chain Tg: -121°C, light transmittance when 25 parts by mass of 100 parts by mass of cetanol are mixed at 85°C and then measured at 25°C: 98%, charge density: 0.1 meq / g), those prepared according to the description of Synthesis Example 1 in JP-A-2008-143820 (main chain Tg: -121°C, light transmittance when 25 parts by mass of 100 parts by mass of cetanol are mixed at 85°C and then measured at 25°C: 96%, charge density: 0.045 meq / g), and those prepared according to the description of JP-A-2009-24114 (main chain Tg: -121°C, light transmittance when 25 parts by mass of 100 parts by mass of cetanol are mixed at 85°C and then measured at 25°C: 96%, charge density: 0.045 meq / g). Examples include a polymer prepared in accordance with the description of Example 8 (main chain Tg: -121°C, light transmittance measured at 25°C after mixing 25 parts by mass of polymer with 100 parts by mass of cetanol at 85°C: 98%, charge density: 0.3 meq / g, light transmittance measured at 25°C after mixing 4 parts by mass of polymer with 100 parts by mass of water at 65°C: 87.4%, viscosity measured at 25°C after mixing 1 part by mass of polymer with 100 parts by mass of water at 65°C: 2.5 mPa s).

[0112] (Amino modified silicone) The amino-modified silicone may be one represented by the following general formula (13).

[0113] [ka]

[0114] [In formula (13), R 51 ~R 53 each independently represents a hydrogen atom, a hydroxyl group, or a monovalent organic group having 1 to 20 carbon atoms, R 54 represents a group represented by the following general formula (14): R 55 ~R 56 each independently represents a hydroxyl group, an alkoxy group having 1 to 20 carbon atoms, a monovalent organic group having 1 to 20 carbon atoms, or a group represented by the following general formula (14): R 57 ~R 60 each independently represents a hydrogen atom, a hydroxyl group, an alkoxy group having 1 to 20 carbon atoms, a monovalent organic group having 1 to 20 carbon atoms, or a group represented by the following general formula (14): d is a number in the range of 10≦d≦10000, e is a number in the range of 0.1≦e≦1000.

[0115] [ka]

[0116] [In formula (14), R 61 ~R 62 each independently represents an alkanediyl group having 1 to 8 carbon atoms, R 63 ~R 65 each independently represents a hydrogen atom or a monovalent organic group having 1 to 10 carbon atoms, f is a number in the range of 0≦f≦6, * indicates a bond.

[0117] In formula (13), R 51~R 53 , R 55 ~R 56 , R 57 ~R 60 Examples of the monovalent organic group having 1 to 20 carbon atoms and represented by the formula (I) include linear or branched alkyl groups such as methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, decyl, dodecyl, tetradecyl, hexadecyl, octadecyl, and eicosyl; cycloalkyl groups such as cyclopentyl and cyclohexyl; alkenyl groups such as vinyl and allyl; aryl groups such as phenyl and tolyl; and halogenoalkyl groups such as 3,3,3-trifluoropropyl, 2-(perfluorobutyl)ethyl, 2-(perfluorohexyl)ethyl, and 2-(perfluorooctyl)ethyl.

[0118] Also, R 51 ~R 53 is preferably a monovalent organic group having 1 to 20 carbon atoms. 51 ~R 53 Of these, it is preferable that 90 mol % or more are methyl groups.

[0119] R 55 ~R 56 , R 57 ~R 60 The number of carbon atoms of the alkoxy group represented by the formula (I) is 1 to 20, preferably 1 to 12, and more preferably 1 to 6. The alkoxy group may be linear or branched. Examples of the alkoxy group include a methoxy group, an ethoxy group, a propoxy group, a butoxy group, a pentyloxy group, and a hexyloxy group. R 55 ~R 56 , R 57 ~R 60 As the alkyl group, a hydroxyl group, an alkoxy group having 1 to 20 carbon atoms, or a monovalent organic group having 1 to 20 carbon atoms is preferable, and a hydroxyl group, a methoxy group, or a methyl group is more preferable.

[0120] Furthermore, d is a number satisfying 10≦d≦10,000, and preferably 100≦d≦2,000. Furthermore, e is a number satisfying 0.1≦e≦1000, with 1≦e≦100 being preferable. The sum of d and e is preferably 10 or more and less than 1,000 on the number average, more preferably 30 or more and less than 1,000 on the number average, and particularly preferably 40 or more and less than 800 on the number average.

[0121] In formula (14), R 61 ~R 62 each independently represents an alkanediyl group having 1 to 8 carbon atoms. R 61 The number of carbon atoms of the alkanediyl group represented by R is preferably 1 to 6. 62 The alkanediyl group represented by the following formula (I) preferably has 1 to 4 carbon atoms. R 61 ~R 62 The alkanediyl group represented by the formula (I) may be linear or branched. Examples of the alkanediyl group include a methane-1,1-diyl group, an ethane-1,1-diyl group, an ethane-1,2-diyl group, a propane-1,1-diyl group, a propane-1,2-diyl group, a propane-1,3-diyl group, a propane-2,2-diyl group, a butane-1,4-diyl group, a pentane-1,5-diyl group, and a hexane-1,6-diyl group. Among these, R 61 is preferably a propane-1,3-diyl group (trimethylene group), and R 62 As the alkyl group, an ethane-1,2-diyl group (dimethylene group) is preferable.

[0122] Also, R 63 ~R 65 R each independently represents a hydrogen atom or a monovalent organic group having 1 to 10 carbon atoms. 63 ~R 65Examples of the organic group represented by the formula (I) include linear or branched alkyl groups such as methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, and decyl; cycloalkyl groups such as cyclopentyl and cyclohexyl; alkenyl groups such as vinyl and allyl; aryl groups such as phenyl and tolyl; alkanoyl groups such as acetyl and propionyl, as well as groups in which some or all of the hydrogen atoms of these groups have been substituted with a substituent selected from halogen atoms, hydroxyl groups, alkoxy groups, and hydroxyalkoxy groups, such as halogenoalkyl groups such as 3,3,3-trifluoropropyl, 2-(perfluorobutyl)ethyl, 2-(perfluorohexyl)ethyl, and 2-(perfluorooctyl)ethyl; and monovalent organic groups (e.g., -COCH) obtained by reaction with an acid anhydride, an epoxy compound, or an acrylic compound. 3 , -CH 2 CH(OH)CH 2 OH, -CH 2 CH(OH)CH 2 OCH 2 CH 2 OH) and others. R 63 ~R 65 A hydrogen atom is particularly preferred as R 63 ~R 65 When at least one of the groups is a hydrogen atom, some or all of the remaining groups may be a monovalent organic group obtained by reaction with the above-mentioned acid anhydride, epoxy compound, or acrylic compound. Furthermore, f represents a number in the range of 0≦f≦6, and is preferably a number in the range of 0≦f≦3.

[0123] Such an R 54 Specifically, the following are included:

[0124] [ka]

[0125] The amino equivalent of the amino-modified silicone is preferably 200 g / mol to 30,000 g / mol, more preferably 400 g / mol to 10,000 g / mol, and particularly preferably 600 g / mol to 5,000 g / mol. As the amino-modified silicone, amodimethicone, aminoethylaminopropyl dimethicone, and aminopropyl dimethicone are preferred.

[0126] The amino-modified silicone may be a commercially available product or may be synthesized according to a conventional method. Commercially available amino-modified silicones include amino-modified silicone oils such as SF8451C, SF8452C, and SF8457C (all manufactured by Toray Dow Corning Silicone Co., Ltd.), KF8003, and KF867 (all manufactured by GE Toshiba Silicone Co., Ltd.), and amodimethicone emulsions such as SM8704C (manufactured by Toray Dow Corning Silicone Co., Ltd.). The amino-modified silicone oil may also be blended in the form of an emulsion. The amino-modified silicone emulsion may be prepared by mechanical emulsification (high shear mechanical mixing of amino-modified silicone and water), chemical emulsification (emulsifying amino-modified silicone with water and an emulsifier), or a combination of these, or by emulsion polymerization.

[0127] (Polyether / alkyl-modified silicone) The polyether / alkyl co-modified silicone is a copolymer having a silicone chain and a polyether group, in which an alkyl group (preferably an alkyl group having 6 to 20 carbon atoms, more preferably a linear or branched alkyl group having 10 to 20 carbon atoms) has been introduced into the side chain or end. Polyether / alkyl co-modified silicones also include those in which a silicone dendron group has been further introduced into the side chain or end. Examples of the polyether group contained in the polyether-alkyl-comodified silicone include a polyoxyethylene group and a polyoxypropylene group, and these may be contained in combination.

[0128] The HLB value of the polyether-alkyl-comodified silicone is preferably 2 or more and 6 or less, and more preferably 3 or more and 5 or less. In this specification, HLB is an index showing the hydrophilic-lipophilic balance, and is defined by the following formula proposed by Oda and Teramura et al.

[0129] HLB = (Σinorganic value / Σorganic value) × 10

[0130] Specific examples of polyether / alkyl co-modified silicones include cetyl PEG / PPG10-1 dimethicone [ABIL EM90, EM180 (both manufactured by Evonik Japan), KF-6048 (manufactured by Shin-Etsu Chemical Co., Ltd.)], lauryl PEG-9 polydimethylsiloxyethyl dimethicone [KF-6038 (manufactured by Shin-Etsu Chemical Co., Ltd.)], lauryl PEG / PPG-18 / 18 methicone [DC5200 (manufactured by Dow Corning Toray Co., Ltd.)], and lauryl PEG-10 tris(trimethylsiloxy)silylethyl dimethicone [ES-5300 (manufactured by Dow Corning Toray Co., Ltd.)].

[0131] (Polyglycerin / alkyl-modified silicone) The polyglycerin / alkyl-comodified silicone is a copolymer having a silicone chain and a polyglyceryl group, to which an alkyl group (preferably an alkyl group having 6 to 20 carbon atoms, more preferably a linear or branched alkyl group having 10 to 20 carbon atoms) has been introduced at the side chain or end. The polyglycerin / alkyl-comodified silicone also includes those to which a silicone dendron group has been further introduced at the side chain or end. The viscosity of the polyglycerin-alkyl modified silicone at 25°C is preferably 1000mm 2 / s or more 6000mm 2 / s or less. The HLB value of the polyglycerin / alkyl-co-modified silicone is preferably 2 or more and 6 or less, and more preferably 3 or more and 5 or less.

[0132] Specific examples of polyglycerin / alkyl-modified silicones include lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone [KF-6105 (manufactured by Shin-Etsu Chemical Co., Ltd.)] and cetyl diglyceryl tris(trimethylsiloxy)silylethyl dimethicone [ES-5600 (manufactured by Dow Corning Toray Co., Ltd.)].

[0133] (Double-ended polyether modified silicone) The above-mentioned double-end type polyether-modified silicone is a copolymer having a silicone chain and a polyether group, and in the form of copolymerization, the polyether group is bonded to both ends of the silicone chain. Examples of the polyether group contained in the both-end type polyether-modified silicone include a polyoxyethylene group and a polyoxypropylene group, and these may be contained in combination. The HLB value of the both-end type polyether modified silicone is preferably 2 or more and 6 or less, and more preferably 3 or more and 5 or less. Specific examples of the both-end type polyether modified silicone include bis(PEG / PPG-14 / 14) dimethicone [ABIL EM97 (manufactured by Evonik Japan)].

[0134] The polymer of component (E) may be used alone or in combination of two or more.

[0135] The content of component (E) in the emulsion composition of the present invention is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, and particularly preferably 1% by mass or more, from the viewpoints of preventing unevenness when foundation is applied over the coating film, as well as improving the skin so that makeup can be applied and lasts well when makeup is applied; and the content of component (E) in the emulsion composition of the present invention is preferably 15% by mass or less, more preferably 10% by mass or less, even more preferably 8% by mass or less, even more preferably 7.5% by mass or less, and particularly preferably 3% by mass or less, from the viewpoints of preventing unevenness when foundation is applied over the coating film, as well as improving the skin so that makeup can be applied and lasts well when makeup is applied. Specifically, the content of the component (E) in the emulsion composition of the present invention is preferably 0.01% by mass or more and 15% by mass or less, more preferably 0.05% by mass or more and 10% by mass or less, even more preferably 0.1% by mass or more and 8% by mass or less, even more preferably 0.1% by mass or more and 7.5% by mass or less, and particularly preferably 1% by mass or more and 3% by mass or less. When the content of the component (E) is 3% by mass or less, the coating film is evenly coated with a foundation, and the makeup application and makeup wear after short-term continuous use and washing are particularly excellent.

[0136] The emulsion composition of the present invention has a mass ratio of component (E) to the total of components (A), (B), (C), and (D) [(E) / {(A)+(B)+(C)+(D)}] of 0.01 or more and 1 or less. In addition, the content mass ratio [(E) / {(A)+(B)+(C)+(D)}] is preferably 0.03 or more, more preferably 0.05 or more, even more preferably 0.1 or more, and particularly preferably 0.3 or more, from the viewpoint of improving the skin to have good makeup application and makeup retention when makeup is applied, as well as the absence of unevenness when foundation is applied over the coating film, and is preferably 0.95 or less, more preferably 0.9 or less, even more preferably 0.85 or less, and particularly preferably 0.7 or less. The specific range is preferably 0.03 or more and 0.95 or less, more preferably 0.05 or more and 0.9 or less, more preferably 0.1 or more and 0.85 or less, and particularly preferably 0.3 or more and 0.7 or less. When the content mass ratio [(E) / {(A)+(B)+(C)+(D)}] is 0.3 or more, the coating film is particularly excellent in terms of the lack of unevenness when a foundation is applied over it, and when the content mass ratio [(E) / {(A)+(B)+(C)+(D)}] is 0.7 or less, the coating film is particularly excellent in terms of the lack of unevenness when a foundation is applied over it, as well as the makeup application and staying power of makeup after short-term continuous use and washing.

[0137] <Component (F)> From the viewpoints of storage stability, feel during use, skin-improving effects, and the like, it is preferable that the emulsion composition of the present invention further contains (F) water in addition to the components (A) to (E). The content of water in the emulsion composition of the present invention is preferably 30% by mass or more, more preferably 50% by mass or more, and particularly preferably 60% by mass or more from the viewpoint of skin improving effect, etc., and is preferably 99.99% by mass or less, more preferably 97.5% by mass or less, and particularly preferably 95% by mass or less from the viewpoint of usability, etc. As a specific range, in the emulsion composition of the present invention, 30% by mass or more and 99.99% by mass or less are preferred, 50% by mass or more and 97.5% by mass or less are more preferred, and 60% by mass or more and 95% by mass or less are particularly preferred.

[0138] <Ingredients (G)> From the viewpoints of storage stability, feeling in use, spreading on the skin, etc., the emulsion composition of the present invention preferably further contains (G) a polyhydric alcohol in addition to the components (A) to (E). Note that (F) water and (G) a polyhydric alcohol may be contained in combination. Examples of polyhydric alcohols include glycols, glycerins, polyoxyalkylene methyl glucoses, as well as sorbitol, maltitol, sorbitan, glucose, fructose, sucrose, and maltose.

[0139] Examples of glycols include alkylene glycols such as ethylene glycol, propylene glycol, and 1,3-butylene glycol; and polyalkylene glycols such as diethylene glycol, dipropylene glycol, and polyethylene glycol. Examples of glycerins include glycerin, diglycerin, and polyglycerin. Examples of polyoxyalkylene methyl glucoses include polyoxyethylene methyl glucose and polyoxypropylene methyl glucose. Among these, glycerins are preferred, with glycerin being particularly preferred. The polyhydric alcohols may be used alone or in combination of two or more kinds.

[0140] The content of the polyhydric alcohol in the emulsion composition of the present invention is preferably 0% by mass or more, more preferably 0.001% by mass or more, and particularly preferably 5% by mass or more, and is preferably 60% by mass or less, more preferably 30% by mass or less, and particularly preferably 20% by mass or less in the emulsion composition of the present invention.

[0141] The emulsion composition of the present invention may also contain other aqueous bases (for example, lower alcohols having 1 to 4 carbon atoms, such as ethanol and propanol).

[0142] The emulsion composition of the present invention may further contain oily components other than those mentioned above. Examples of such oily components include hydrocarbon oils such as liquid paraffin, squalane, and vaseline; ether oils such as cetyl dimethyl butyl ether, ethylene glycol dioctyl ether, and glycerol monooleyl ether; ester oils such as octyldodecyl myristate, isopropyl palmitate, butyl stearate, di-2-ethylhexyl adipate, neopentyl glycol dicaprate, and trioctanoin; vegetable oils such as olive oil; silicone oils such as dimethylpolysiloxane, cyclic dimethylpolysiloxane, methylphenylpolysiloxane, carboxy-modified silicone, alcohol-modified silicone, alkyl-modified silicone, and fluorine-modified silicone; fluorine-based oils such as perfluoroalkylethyl phosphate, perfluoroalkyl polyoxyethylene phosphate, perfluoropolyether, and polytetrafluoroethylene; sterols such as cholesterol and phytosterol. The oily components may be used alone or in combination of two or more. The content of these oily components in the emulsion composition of the present invention is preferably from 0% by mass to 20% by mass.

[0143] The emulsion composition of the present invention may also contain active ingredients and additives other than those mentioned above that are usually used in cosmetics. Examples of such active ingredients and additives include water-soluble vitamins such as ascorbic acid, nicotinamide, and nicotinic acid; animal and plant extracts such as phellodendron bark extract, licorice extract, aloe extract, horsetail extract, tea extract, cucumber extract, clove extract, carrot extract, witch hazel extract, placenta extract, seaweed extract, horse chestnut extract, yuzu extract, asaho extract, royal jelly extract, eucalyptus extract, and asaho extract; potassium hydroxide, sodium hydroxide, triethanolamine, sodium carbonate, and the like. Bases such as thorium, arginine, etc.; acids such as citric acid, tartaric acid, lactic acid, phosphoric acid, succinic acid, adipic acid, glutamic acid, etc.; thickeners such as carboxyvinyl polymer, sodium alginate, carrageenan, carboxymethylcellulose, hydroxyethylcellulose, guar gum, xanthan gum, carboxymethylchitosan, sodium hyaluronate, N,N-dimethylaminoethyl diethyl methacrylate sulfate·N,N-dimethylacrylamide·polyethylene glycol dimethacrylate copolymer, etc. These may be used alone or in combination of two or more.

[0144] The emulsion composition of the present invention can be produced by a conventional method, for example, a production method including an emulsification step of emulsifying an oil phase component containing components (A) to (D) and an aqueous phase component containing water (in the case of using component (G), an aqueous phase component containing water and component (G)), and further containing component (E) as either or both of the oil phase component and the aqueous phase component used in the emulsification step. From the viewpoint of storage stability, etc., the method for producing the emulsion composition is preferably a production method including an emulsification step of emulsifying an oil phase component containing components (A) to (D) and an aqueous phase component containing water and component (E). The emulsification step is preferably carried out so that the content mass ratio [(E) / {(A)+(B)+(C)+(D)}] is 0.01 or more and 1 or less. The emulsification step is preferably carried out so that each content and content mass ratio are within the above-mentioned ranges explained as each content and content mass ratio in the emulsion composition.

[0145] The oil phase component and the aqueous phase component used in the emulsification step can each be prepared by a conventional method. The method for producing an emulsion composition may include a step of preparing an oil phase component and a step of preparing an aqueous phase component in addition to the emulsification step. However, the oil phase component and the aqueous phase component are preferably prepared by heated mixing (preferably heated and mixed at 70 to 95°C, more preferably 75 to 90°C). In addition, the emulsification step is preferably performed by heating and mixing from the viewpoint of improving the skin to have good makeup adhesion and makeup retention when makeup is applied, as well as the absence of unevenness when foundation is applied on the coating film. The temperature of the emulsification step is preferably 70°C or higher, more preferably 75°C or higher, and even more preferably 80°C or higher, and is preferably 95°C or lower, more preferably 90°C or lower. Specifically, 70 to 95°C is preferred, 75 to 90°C is more preferred, and 80 to 90°C is even more preferred. It is particularly preferred to perform the emulsification step by heating and mixing at such a temperature. In addition, a state in which the oil phase component and the aqueous phase component coexist under high temperature conditions may be created by mixing the oil phase component and the aqueous phase component that have been heated separately in advance.

[0146] The heating time in the emulsification step is preferably 0.1 hours or more, more preferably 0.2 hours or more, particularly preferably 0.5 hours or more, and is preferably 3 hours or less, more preferably 2 hours or less, particularly preferably 1 hour or less. The specific range is preferably 0.1 hours or more and 3 hours or less, more preferably 0.2 hours or more and 2 hours or less, and particularly preferably 0.5 hours or more and 1 hour or less.

[0147] More specifically, the method for producing the emulsion composition of the present invention is as follows. That is, water and component (E) (and further component (G) if necessary) are heated and mixed to homogenize to obtain an aqueous phase component. Components (A) to (D) are heated and mixed to homogenize to obtain an oil phase component. The aqueous phase component and the oil phase component are mixed under heating conditions to homogenize, and then cooled if necessary, to produce the emulsion composition.

[0148] The emulsion composition of the present invention can improve the application and wear of makeup when the application site is washed and makeup is applied, even with short-term continuous use. The reason why such an effect can be obtained with short-term continuous use even after washing is not necessarily clear, but the present inventors speculate that this is because the polymer of component (E) adheres to rough skin surface such as desquamation by covering it from above, and components (A) to (D) form a lamellar solid oil phase, and the polymer of component (E) is present in the vicinity of the lamellar solid oil phase during use, thereby greatly enhancing the effect of improving rough skin surface such as desquamation, thereby improving rough skin surface (skin condition) even with short-term continuous use, and the skin itself has good application and wear of makeup. The emulsion composition of the present invention is suitable for use as a cosmetic (more specifically, a skin care cosmetic), and can be, for example, a milky lotion, a gel, a beauty essence, or the like. Furthermore, when the emulsion composition of the present invention is applied to the skin and then a foundation is applied over the resulting coating, the foundation is less likely to become uneven, and the emulsion composition of the present invention is also useful as a makeup base.

[0149] The emulsion composition of the present invention can be used by applying it to the skin (preferably the skin excluding the scalp, more preferably the face, body, hands, feet, etc.). This method is suitable as a skin care method. The above-mentioned makeup may be a normal makeup using a foundation, a blush, etc., and a normal lotion or emulsion may be used as necessary. After applying the emulsion composition of the present invention, the skin may be washed or towel-dried prior to makeup.

[0150] The type of emulsion of the emulsion composition of the present invention is not particularly limited, but examples include oil-in-water and water-in-oil emulsions, and from the standpoint of usability, skin improving effects, and the like, oil-in-water emulsion compositions are preferred. In addition, the emulsion composition of the present invention is preferably a gel with an α-type structure from the viewpoints of storage stability, safety, and the absence of unevenness when a foundation is applied over the coating film, as well as improving the application and staying power of makeup on the skin when makeup is applied. The α-type structure can be confirmed by structural analysis using X-rays. The α-type structure is a hexagonal crystal system in which the lipophilic groups are oriented perpendicular to the surface of the hydrophilic base layer, and is characterized by the appearance of a sharp diffraction peak at a Bragg angle of approximately 21 to 23 degrees.

[0151] In relation to the above-mentioned embodiment, the present invention further discloses the following emulsion composition etc. <1> An emulsion composition comprising the following components (A), (B), (C), (D) and (E), wherein the mass ratio of the content of component (E) to the total content of components (A), (B), (C) and (D) [(E) / {(A)+(B)+(C)+(D)}] is 0.01 or more and 1 or less. (A) one or more compounds selected from sphingosine, a salt of sphingosine, a pseudosphingosine, a salt of pseudosphingosine, an anionic surfactant, and a cationic surfactant; (B) Ceramides (C) Glycerol fatty acid ester (D) Higher alcohol (E) A polymer having a light transmittance of 90% or more when 25 parts by mass of the polymer are mixed with 100 parts by mass of cetanol at 85° C. and then measured at 25° C., and a glass transition temperature Tg of the main chain of the polymer is 25° C. or less. <2> The component (A) is preferably one or more compounds selected from a natural sphingosine represented by the following general formula (2), a salt of the natural sphingosine, a pseudo-sphingosine represented by the following general formula (3), a salt of the pseudo-sphingosine, an anionic surfactant, and a cationic surfactant: <1> The emulsion composition according to claim 1.

[0152] [ka]

[0153] [In formula (2), R 7 represents a linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 7 to 19 carbon atoms which may be substituted with a hydroxyl group; Y 1 represents a methylene group or a methine group; X 5 , X 6 and X 7 each independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group; X 8 represents a hydrogen atom or forms an oxo group together with the adjacent oxygen atom (provided that Y 1 When is a methine group, X 5 and X 6 One of the following is a hydrogen atom, and the other is absent: X 8 When forms an oxo group, X 7 does not exist. ); R 8 represents a hydroxymethyl group or an acetoxymethyl group; a R 1 each independently represents a hydrogen atom, an amidino group, or a linear or branched, saturated or unsaturated hydrocarbon group having a total of 1 to 4 carbon atoms which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group; a represents the number 2 or 3; The dashed lines indicate that unsaturated bonds may be present.

[0154] [ka]

[0155] [In formula (3), R 9 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 10 to 22 carbon atoms which may be substituted with a hydroxyl group; X 9 represents a hydrogen atom, an acetyl group, or a glyceryl group; a R 2 each independently represents a hydrogen atom, an amidino group, or a linear or branched, saturated or unsaturated hydrocarbon group having a total of 1 to 8 carbon atoms which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group; a represents the number 2 or 3.

[0156] <3> The natural sphingosine is preferably one or more selected from sphingosine, dihydrosphingosine, phytosphingosine, sphingadienine, dehydrosphingosine, dehydrophytosphingosine, and N-alkylated forms thereof, more preferably phytosphingosine. <2> The emulsion composition according to claim 1. <4> The pseudo-sphingosine is preferably one or more selected from the following pseudo-sphingosines (i) to (iv), more preferably pseudo-sphingosine (ii): <2> or <3> The emulsion composition according to claim 1.

[0157] [ka]

[0158] <5> The anionic surfactant is preferably one or more selected from N-acylglutamic acid salts having an acyl group with 12 to 24 carbon atoms, fatty acid salts having 12 to 24 carbon atoms, and polyoxyethylene alkyl ether phosphates having 12 to 24 carbon atoms, more preferably N-acylglutamic acid salts having an acyl group with 12 to 24 carbon atoms, even more preferably N-acylglutamic acid salts having an acyl group with 12 to 20 carbon atoms, and even more preferably N-stearoyl-L-glutamic acid salt. <1> ~ <4> 13. The emulsion composition according to claim 12, <6> The cationic surfactant is preferably a quaternary ammonium salt type cationic surfactant, more preferably a quaternary ammonium salt type cationic surfactant represented by the following general formula (7): <1> ~ <5> 13. The emulsion composition according to claim 12,

[0159] [ka]

[0160] [In formula (7), R 31 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 6 or more carbon atoms, R32 represents an alkyl group having 1 to 4 carbon atoms, R 33 and R 34 each independently represents an alkyl group having 1 to 4 carbon atoms, or a linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 6 or more carbon atoms, AN - represents a salt-forming anion.

[0161] <7> The cationic surfactant is preferably a dialkyldimethylammonium salt, more preferably at least one selected from didecyldimethylammonium chloride and distearyldimethylammonium chloride, and even more preferably distearyldimethylammonium chloride. <1> ~ <5> 13. The emulsion composition according to claim 12,

[0162] <8> The content of component (A) in the emulsion composition of the present invention is preferably 0.001% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, particularly preferably 0.2% by mass or more, and is preferably 5% by mass or less, more preferably 1.5% by mass or less, even more preferably 1% by mass or less, even more preferably 0.8% by mass or less, particularly preferably 0.5% by mass or less, <1> ~ <7> 13. The emulsion composition according to claim 12,

[0163] <9> Component (B) is preferably represented by the following general formula (4), more preferably represented by the following general formula (5) or (6): <1> ~ <8> 13. The emulsion composition according to claim 12,

[0164] [ka]

[0165] [In formula (4), R 11 represents a linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 4 to 30 carbon atoms which may be substituted with a hydroxyl group, a carbonyl group or an amino group, or a hydrogen atom; Z represents a methylene group, a methine group, or an oxygen atom; X 11 , X 12 and X 13 each independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group, X 14 represents a hydrogen atom, an acetyl group, or a glyceryl group, or forms an oxo group together with the adjacent oxygen atom (provided that when Z is a methine group, X 11 and X 12 One of X is a hydrogen atom and the other is not present. 14 When forms an oxo group, X 13 does not exist. ); R 12 and R 13 each independently represents a hydrogen atom, a hydroxyl group, a hydroxyalkyl group (e.g., a hydroxymethyl group, a hydroxyethyl group, etc.), or an acetoxymethyl group; R 14 represents a linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 5 to 60 carbon atoms which may be substituted with a hydroxyl group, a carbonyl group or an amino group and which may have an ether bond, an ester bond or an amide bond in the main chain; R 15 represents a hydrogen atom or a linear or branched, saturated or unsaturated hydrocarbon group having a total of 1 to 30 carbon atoms, which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group (R 11 When is a hydrogen atom and Z is an oxygen atom, R 15 is preferably a hydrocarbon group having a total of 10 to 30 carbon atoms which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group, and R 11 When is a hydrocarbon group, R 15 represents a hydrogen atom or a hydrocarbon group having a total of 1 to 8 carbon atoms, which may have a substituent selected from a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, and an acetoxy group; The dashed lines indicate that the bond may be an unsaturated bond.

[0166] [ka]

[0167] [In formula (5), R 21 represents a linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 7 to 19 carbon atoms which may be substituted with a hydroxyl group; Z 1 represents a methylene group or a methine group; X 15 , X 16 , and X 17 each independently represents a hydrogen atom, a hydroxyl group, or an acetoxy group; X 18 represents a hydrogen atom or forms an oxo group together with the adjacent oxygen atom (provided that Z 1 When is a methine group, X 15 and X 16 One of X is a hydrogen atom and the other is not present. 18 When forms an oxo group, X 17 does not exist. ); R 22 represents a hydroxyalkyl group (e.g., a hydroxymethyl group, a hydroxyethyl group, etc.) or an acetoxymethyl group; R 23 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R 24 represents a linear, branched or cyclic, saturated or unsaturated hydrocarbon group (the hydrocarbon group is preferably an alkyl group) having 5 to 30 carbon atoms which may be substituted with a hydroxyl group, or a linear or branched, saturated or unsaturated fatty acid having 8 to 22 carbon atoms which may be substituted with a hydroxyl group which is ester-bonded to the ω-terminus of the hydrocarbon group (the hydrocarbon group is preferably an alkyl group); The dashed lines indicate that the bond may be an unsaturated bond.

[0168] [ka]

[0169] [In formula (6), R 25 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 10 to 22 carbon atoms which may be substituted with a hydroxyl group, or a hydrogen atom; X 19 represents a hydrogen atom, an acetyl group, or a glyceryl group; R 26 represents a linear, branched or cyclic, saturated or unsaturated hydrocarbon group (the hydrocarbon group is preferably an alkyl group) having 5 to 22 carbon atoms which may be substituted with a hydroxyl group or an amino group, or a linear or branched, saturated or unsaturated fatty acid having 8 to 22 carbon atoms which may be substituted with a hydroxyl group is ester-bonded to the ω-terminus of the hydrocarbon group (the hydrocarbon group is preferably an alkyl group); R 27 represents a hydrogen atom or a hydrocarbon group having a total of 1 to 30 carbon atoms (the hydrocarbon group is preferably an alkyl group) which may be substituted with a hydroxyl group, a hydroxyalkoxy group, an alkoxy group, or an acetoxy group. <10> The content of component (B) in the emulsion composition of the present invention is preferably 0.001% by mass or more, more preferably 0.05% by mass or more, even more preferably 1% by mass or more, particularly preferably 1.5% by mass or more, and is preferably 10% by mass or less, more preferably 7% by mass or less, even more preferably 5% by mass or less, particularly preferably 4% by mass or less, in the emulsion composition of the present invention. <1> ~ <9> 13. The emulsion composition according to claim 12,

[0170] <11> The component (C) is preferably a glycerin mono-fatty acid ester having a residue of a fatty acid having 10 to 24 carbon atoms, more preferably a glycerin mono-fatty acid ester having a residue of a fatty acid having 16 to 24 carbon atoms, and even more preferably a glycerin mono-fatty acid ester having a residue of a saturated fatty acid having 18 to 24 carbon atoms. <1> ~ <10> 13. The emulsion composition according to claim 12, <12> The content of component (C) in the emulsion composition of the present invention is preferably 0.001% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, particularly preferably 0.5% by mass or more, and is preferably 10% by mass or less, more preferably 7% by mass or less, even more preferably 5% by mass or less, even more preferably 3% by mass or less, particularly preferably 1.6% by mass or less. <1> ~ <11> 13. The emulsion composition according to claim 12,

[0171] <13> Component (D) is preferably a monohydric alcohol having 10 to 24 carbon atoms, more preferably a monohydric alcohol having 12 to 22 carbon atoms, and even more preferably a monohydric alcohol having 14 to 22 carbon atoms. <1> ~ <12> 13. The emulsion composition according to claim 12, <14> The content of component (D) in the emulsion composition of the present invention is preferably 0.001% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, particularly preferably 0.6% by mass or more, and is preferably 10% by mass or less, more preferably 7% by mass or less, even more preferably 5% by mass or less, particularly preferably 3% by mass or less, in the emulsion composition of the present invention. <1> ~ <13> 13. The emulsion composition according to claim 12, <15> the mass ratio of the content of component (B) to the total content of components (B), (C) and (D) [(B) / {(B)+(C)+(D)}] is preferably 0.1 or more, more preferably 0.2 or more, and is preferably 1 or less, more preferably 0.75 or less, particularly preferably 0.6 or less; <1> ~ <14> 13. The emulsion composition according to claim 12, <16> the mass ratio of the component (C) to the total of the components (C) and (D) [(C) / {(C)+(D)}] is preferably 0.1 or more, more preferably 0.25 or more, and is preferably 1 or less, more preferably 0.75 or less, particularly preferably 0.65 or less; <1> ~ <15> 13. The emulsion composition according to claim 12,

[0172] <17> The glass transition temperature Tg of the main chain of the polymer of component (E) is preferably 15° C. or lower, more preferably 0° C. or lower, even more preferably −25° C. or lower, even more preferably −50° C. or lower, and particularly preferably −100° C. or lower. <1> ~ <16> 13. The emulsion composition according to claim 12, <18> The light transmittance measured at 25°C after mixing 25 parts by mass of the polymer of component (E) with 100 parts by mass of cetanol at 85°C is preferably 92.5% or more, more preferably 95% or more, even more preferably 96% or more, particularly preferably 98% or more, and is also preferably less than 100%. <1> ~ <17> 13. The emulsion composition according to claim 12, <19> The polymer of component (E) is preferably an amphiphilic polymer; <1> ~ <18> 13. The emulsion composition according to claim 12, <20> The light transmittance measured at 25°C after mixing 4 parts by mass of the polymer of component (E) with 100 parts by mass of water at 65°C is preferably 78% or more, more preferably 80% or more, even more preferably 83% or more, particularly preferably 85% or more, and is also preferably less than 100%, more preferably less than 95%. <19> The emulsion composition according to claim 1. <21> The polymer of component (E) is preferably a cationic or nonionic polymer, more preferably a cationic polymer; <1> ~ <20> 13. The emulsion composition according to claim 12,

[0173] <22> The polymer of component (E) is preferably a polymer having, as a main chain, one or more types of segments selected from an organopolysiloxane segment, a polyoxyalkylene segment, and a segment containing a repeat of a structural unit derived from an unsaturated monomer, and more preferably a polymer having, as a main chain, an organopolysiloxane segment. <1> ~ <21> 13. The emulsion composition according to claim 12, <23> The polymer of component (E) is preferably a polymer having one or more types of segments selected from a poly(N-acylalkyleneimine) segment, a polyoxyalkylene segment, a polyglycerin segment, and an alkyl segment as a side chain. <1> ~ <22> 13. The emulsion composition according to claim 12, <24> The polymer of component (E) is preferably a polymer having, as its main chain, one or more segments selected from an organopolysiloxane segment, a polyoxyalkylene segment, and a segment containing a repeat of a structural unit derived from an unsaturated monomer, and having, as its side chain, one or more segments selected from a poly(N-acylalkyleneimine) segment, a polyoxyalkylene segment, a polyglycerin segment, and an alkyl segment, and more preferably a graft polymer having, as its main chain, an organopolysiloxane segment, and having, as its side chain, one or more segments selected from a poly(N-acylalkyleneimine) segment, a polyoxyalkylene segment, a polyglycerin segment, and an alkyl segment. <1> ~ <21> 13. The emulsion composition according to claim 12,

[0174] <25> The polymer of component (E) is preferably one or more polymers selected from poly(N-acylalkyleneimine)-modified silicones, amino-modified silicones, polyether / alkyl co-modified silicones, polyglycerin / alkyl co-modified silicones, and both-end type polyether-modified silicones, more preferably one or more polymers selected from poly(N-acylalkyleneimine)-modified silicones, amino-modified silicones, polyether / alkyl co-modified silicones, and polyglycerin / alkyl co-modified silicones, even more preferably one or more polymers selected from poly(N-acylalkyleneimine)-modified silicones, polyether / alkyl co-modified silicones, and polyglycerin / alkyl co-modified silicones, and particularly preferably poly(N-acylalkyleneimine)-modified silicones. <1> ~ <21> 13. The emulsion composition according to claim 12,

[0175] <26> The poly(N-acylalkyleneimine)-modified silicone is preferably an organopolysiloxane in which a poly(N-acylalkyleneimine) segment consisting of a repeating unit represented by the following general formula (11) is bonded to at least two silicon atoms of an organopolysiloxane segment constituting the main chain via an alkylene group containing a heteroatom, wherein the poly(N-acylalkyleneimine) segment has a number average molecular weight of 500 to 4000, and the organopolysiloxane segment constituting the main chain has a weight average molecular weight of 10000 to 200000. <25> The emulsion composition according to claim 1.

[0176] [ka]

[0177] [In formula (11), R 41 represents a hydrogen atom, an alkyl group having 1 to 22 carbon atoms, an aralkyl group, or an aryl group, and t represents 2 or 3.

[0178] <27> The amino-modified silicone is represented by the following general formula (13): <25> or <26> The emulsion composition according to claim 1.

[0179] [ka]

[0180] [In formula (13), R 51 ~R 53 each independently represents a hydrogen atom, a hydroxyl group, or a monovalent organic group having 1 to 20 carbon atoms, R 54 represents a group represented by the following general formula (14): R 55 ~R 56 each independently represents a hydroxyl group, an alkoxy group having 1 to 20 carbon atoms, a monovalent organic group having 1 to 20 carbon atoms, or a group represented by the following general formula (14): R 57~R 60 each independently represents a hydrogen atom, a hydroxyl group, an alkoxy group having 1 to 20 carbon atoms, a monovalent organic group having 1 to 20 carbon atoms, or a group represented by the following general formula (14): d is a number in the range of 10≦d≦10000, e is a number in the range of 0.1≦e≦1000.

[0181] [ka]

[0182] [In formula (14), R 61 ~R 62 each independently represents an alkanediyl group having 1 to 8 carbon atoms, R 63 ~R 65 each independently represents a hydrogen atom or a monovalent organic group having 1 to 10 carbon atoms, f is a number in the range of 0≦f≦6, * indicates a bond.

[0183] <28> The content of component (E) in the emulsion composition of the present invention is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, particularly preferably 1% by mass or more, and is preferably 15% by mass or less, more preferably 10% by mass or less, even more preferably 8% by mass or less, even more preferably 7.5% by mass or less, particularly preferably 3% by mass or less, <1> ~ <27> 13. The emulsion composition according to claim 12, <29> The content mass ratio [(E) / {(A)+(B)+(C)+(D)}] is preferably 0.03 or more, more preferably 0.05 or more, even more preferably 0.1 or more, particularly preferably 0.3 or more, and is preferably 0.95 or less, more preferably 0.9 or less, even more preferably 0.85 or less, particularly preferably 0.7 or less. <1> ~ <28> 13. The emulsion composition according to claim 12,

[0184] <30> Further, (F) water is contained, <1> ~ <29> 13. The emulsion composition according to claim 12, <31> The water content in the emulsion composition of the present invention is preferably 30% by mass or more, more preferably 50% by mass or more, particularly preferably 60% by mass or more, and is preferably 99.99% by mass or less, more preferably 97.5% by mass or less, particularly preferably 95% by mass or less in the emulsion composition of the present invention. <30> The emulsion composition according to claim 1. <32> Further, (G) a polyhydric alcohol is contained, <1> ~ <31> 13. The emulsion composition according to claim 12,

[0185] <33> Preferably it is oil-in-water or water-in-oil, more preferably it is oil-in-water. <1> ~ <32> 13. The emulsion composition according to claim 12, <34> It is a gel with an α-type structure. <1> ~ <33> 13. The emulsion composition according to claim 12,

[0186] <35> <1> ~ <34> A skin care method (preferably a skin quality improving method), comprising the step of applying the emulsion composition according to any one of the above to skin.

[0187] <36> <1> ~ <34> The method for producing the emulsion composition according to any one of the above items 1 to 5, comprising an emulsification step of emulsifying an oil phase component containing components (A) to (D) and an aqueous phase component containing water and component (E). <37> <1> ~ <34> The method for producing the emulsion composition according to any one of the above items 1 to 5, comprising an emulsification step of emulsifying an oil phase component containing components (A) to (D) and an aqueous phase component containing water and component (E) such that the content mass ratio [(E) / {(A)+(B)+(C)+(D)}] is 0.01 or more and 1 or less. <38> The method further includes an oil phase component preparation step of preparing an oil phase component containing components (A) to (D), and an aqueous phase component preparation step of preparing an aqueous phase component containing water and component (E), <36> or <37> The manufacturing method described in <39> The temperature in the emulsification step is preferably 70° C. or higher, more preferably 75° C. or higher, and even more preferably 80° C. or higher, and is preferably 95° C. or lower, and more preferably 90° C. or lower. <36> ~ <38> 13. The method for producing a semiconductor device according to any one of the preceding claims. EXAMPLES

[0188] The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples.

[0189] (Examples 1 to 5, 7 to 9, Comparative Examples 2, 4, and 5 Oil-in-water emulsion cosmetics) According to the formulations shown in Tables 1 and 2, oil-in-water emulsion cosmetics were prepared by the following method. That is, the lamellar solid fatty phase components in Tables 1 and 2 were mixed uniformly and dissolved by heating to 85° C. Separately, the polymer components and aqueous phase components in Tables 1 and 2 were mixed uniformly at 85° C. This mixture was added to the above lamellar solid fatty phase component that had been heated to 85° C., and the mixture was stirred at 85° C. for 30 minutes to make the mixture uniform, and then cooled to 25° C. while stirring.

[0190] Example 6 Oil-in-water emulsion cosmetic According to the formulation shown in Table 1, an oil-in-water emulsion cosmetic was prepared by the following method. That is, the lamellar solid fatty phase components in Table 1 were mixed uniformly, heated to 85° C. to dissolve, and then, while continuing to stir at 85° C., the aqueous phase components in Table 1 were added to this lamellar solid fatty phase component and homogenized. Next, this mixture was cooled to 25° C. with stirring, and then the polymer components in Table 1 were added and stirred for 30 minutes to homogenize.

[0191] (Comparative Example 1 Oil-in-water emulsion cosmetic) According to the formulation shown in Table 2, an oil-in-water emulsion cosmetic was prepared by the following method. That is, the lamellar solid fatty phase components in Table 2 were mixed uniformly, heated to 85°C and dissolved, and while continuing to stir at 85°C, the aqueous phase components in Table 2 were added to this lamellar solid fatty phase component, homogenized, and then cooled to 25°C while stirring.

[0192] (Comparative Example 3: Cosmetic) According to the formulation shown in Table 2, the polymer components and aqueous phase components in Table 2 were mixed at 25° C. to prepare a cosmetic preparation.

[0193] The cosmetics obtained in the above Examples 1 to 9 and Comparative Examples 1 to 5 were evaluated according to the following methods and criteria. The evaluation results are shown in Tables 1 and 2.

[0194] (1) No unevenness of foundation after applying cosmetics Five expert panelists applied 600 mg of the cosmetic of the Example or Comparative Example to the entire face, then applied a commercially available powder foundation to the entire face, and evaluated the evenness of the powder foundation when applied according to the following criteria. The evaluation results are shown as the total score of the five panelists.

[0195] (Evaluation criteria for evenness) 1 point: Uneven 2 points: Somewhat uneven 3 points: Neither 4 points: Applies evenly without too much unevenness 5 points: Very even application without unevenness

[0196] (2) Make-up application after three days of use and washing Five expert panelists applied 600 mg of the cosmetic of the Example or Comparative Example to the whole face twice a day, morning and evening, for three days. After thoroughly washing and acclimatizing the area where the cosmetic was applied for three days, they applied a commercially available lotion and milky lotion, and then applied a commercially available powder foundation to the whole face. They then evaluated the makeup application of the powder foundation according to the following criteria. The evaluation results are shown as the total score of the five panelists.

[0197] (Evaluation criteria for makeup application) 1 point: Makeup doesn't stick well 2 points: Makeup doesn't stick well 3 points: Neither 4 points: Makeup sticks pretty well 5 points: Makeup goes on well

[0198] (3) Make-up durability after three days of use and washing Five expert panelists applied 600 mg of the cosmetic of the embodiment or comparative example to the whole face twice a day, morning and evening, for three days. After thoroughly washing and acclimatizing the area where the cosmetic was applied for three days, they applied a commercially available lotion and milky lotion, and then applied 60 mg of a commercially available powder foundation to the whole face. Five hours after the application of the powder foundation, adhesive tape was applied to the application area and peeled off, and the makeup wear of the foundation after five hours (degree of remaining on the skin) was visually evaluated according to the following criteria, using the amount of foundation attached to the adhesive tape as an index. The evaluation results were shown as the total value of the five panelists.

[0199] (Evaluation criteria for makeup wear) 1 point: No foundation remains on the skin (not on the tape) 2 points: Almost no foundation remains on the skin 3 points: Not much foundation remains on the skin 4 points: Some foundation remains on the skin 5 points: Foundation remains very much on the skin

[0200] [Table 1]

[0201] [Table 2]

[0202] (Examples 10 to 11) Oil-in-water emulsion cosmetics An oil-in-water emulsion cosmetic was prepared in the same manner as in Example 1, except that the formulation shown in Table 3 was used. The cosmetics obtained in Examples 10 and 11 were evaluated for evenness of foundation after application according to the above-mentioned method and criteria. The evaluation results are shown in Table 3.

[0203] [Table 3]

[0204] (Examples 12 to 13) Oil-in-water emulsion cosmetics An oil-in-water emulsion cosmetic was prepared in the same manner as in Example 1, except that the formulation shown in Table 4 was used. The cosmetics obtained in Examples 12 and 13 were evaluated for evenness of foundation after application according to the above-mentioned method and criteria. The evaluation results are shown in Table 4.

[0205] [Table 4]

[0206] The symbols in the table indicate the following: *1: Prepared according to the description of Synthesis Example 2 of JP 2008-143820 A (main chain Tg: -121°C, light transmittance when measured at 25°C after mixing 25 parts by mass with 100 parts by mass of cetanol at 85°C: 98%, charge density: 0.1 meq / g) *2: Prepared according to the description of Synthesis Example 1 of JP 2008-143820 A (main chain Tg: -121°C, light transmittance when measured at 25°C after mixing 25 parts by mass with 100 parts by mass of cetanol at 85°C: 96%, charge density: 0.045 meq / g) *3: Shin-Etsu Chemical Co., Ltd. KF-6048 (main chain Tg: -121°C, light transmittance measured at 25°C after mixing 25 parts by mass with 100 parts by mass of cetanol at 85°C: 98%) *4: Shin-Etsu Chemical Co., Ltd. KF-6105 (main chain Tg: -121°C, light transmittance when 25 parts by mass are mixed with 100 parts by mass of cetanol at 85°C and then measured at 25°C: 98%) *5: Akzo Nobel Structure XL (light transmittance measured at 25°C after mixing 25 parts by mass with 100 parts by mass of cetanol at 85°C: 30%) *6: Shin-Etsu Chemical Co., Ltd. KF96-10000CS (Tg: -121°C, light transmittance measured at 25°C after mixing 25 parts by mass with 100 parts by mass of cetanol at 85°C: 30%) *7: Prepared according to the description of Example 8 of JP2009-24114A (main chain Tg: -121°C, light transmittance when 25 parts by mass of cetanol and 100 parts by mass of cetanol are mixed at 85°C and then measured at 25°C: 98%, charge density: 0.3 meq / g, light transmittance when 4 parts by mass of polymer and 100 parts by mass of water are mixed at 65°C and then measured at 25°C: 87.4%, viscosity when 1 part by mass of polymer and 100 parts by mass of water are mixed at 65°C and then measured at 25°C: 2.5 mPa·s)

Claims

1. An emulsion composition comprising the following components (A), (B), (C), (D) and (E), wherein the ceramides of component (B) are selected from naturally occurring ceramides represented by the following general formula (5) and pseudo-type ceramides represented by the following general formula (6), and the content mass ratio of component (E) to the total of components (A), (B), (C) and (D) [(E) / {(A)+(B)+(C)+(D)}] is 0.1 or more and 1 or less, except for those described in the following (1) and (2). (A) one or more compounds selected from sphingosine, a salt of sphingosine, a pseudosphingosine, a salt of pseudosphingosine, an anionic surfactant, and a cationic surfactant (B) Ceramides (C) Glycerol fatty acid ester (D) Higher alcohol (E) A polymer having a light transmittance of 90% or more when 25 parts by mass of the polymer are mixed with 100 parts by mass of cetanol at 85° C. and then measured at 25° C., and a glass transition temperature Tg of the main chain of the polymer is 25° C. or less. 【Chemistry 1】 [In formula (5), R 21 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 7 to 19 carbon atoms which may be substituted with a hydroxyl group; Z 1 represents a methylene group or a methine group; X 15 , X 16 , and X 17 each independently represent a hydrogen atom, a hydroxyl group, or an acetoxy group; X 18 represents a hydrogen atom or forms an oxo group together with the adjacent oxygen atom (provided that when Z 1 is a methine group, one of X 15 and X 16 is a hydrogen atom and the other does not exist; when X 18 forms an oxo group, X 17 does not exist); R 22 represents a hydroxyalkyl group or an acetoxymethyl group; R 23 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R 24 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 5 to 30 carbon atoms which may be substituted with a hydroxyl group; The dashed lines indicate that the bond may be an unsaturated bond. 【Chemistry 2】 [In formula (6), R 25 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 10 to 22 carbon atoms which may be substituted with a hydroxyl group, or a hydrogen atom; X 19 represents a hydrogen atom, an acetyl group, or a glyceryl group; R 26 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 5 to 22 carbon atoms which may be substituted with a hydroxyl group or an amino group; R 27 represents a hydrogen atom or a hydrocarbon group having a total of 1 to 30 carbon atoms which may be substituted with a hydroxyl group, a hydroxyalkoxy group, an alkoxy group or an acetoxy group. (1) A compound represented by the following formula (COMP1): 【Chemistry 3】 [In formula (COMP1), R 101 represents a linear or branched alkyl group having 1 to 4 carbon atoms substituted with a carboxyl group, or a linear or branched alkyl group having 1 to 4 carbon atoms substituted with a carboxylate group having an alkyl chain having 1 to 4 carbon atoms; R 102 and R 103 each independently represent a linear or branched alkyl group having 1 to 4 carbon atoms. (2) O / W / O type topical skin preparation.

2. The emulsion composition according to claim 1 , wherein the polymer of component (E) is an amphiphilic polymer.

3. 3. The emulsion composition according to claim 1 or 2, wherein the polymer of component (E) is a cationic or nonionic polymer.

4. The emulsion composition according to any one of claims 1 to 3, wherein the polymer of component (E) is a polymer having, as its main chain, one or more types of segments selected from an organopolysiloxane segment, a polyoxyalkylene segment, and a segment containing a repeating structural unit derived from an unsaturated monomer, and having, as its side chain, one or more types of segments selected from a poly(N-acylalkyleneimine) segment, a polyoxyalkylene segment, a polyglycerin segment, and an alkyl segment.

5. The emulsion composition according to any one of claims 1 to 3, wherein the polymer of component (E) is one or more polymers selected from poly(N-acylalkyleneimine)-modified silicones, amino-modified silicones, polyether / alkyl co-modified silicones, polyglycerin / alkyl co-modified silicones, and both-end-type polyether-modified silicones.

6. An emulsion composition described in any one of claims 1 to 3, wherein the polymer of component (E) is one or more polymers selected from poly(N-acylalkyleneimine)-modified silicones, polyether / alkyl-co-modified silicones, and polyglycerin / alkyl-co-modified silicones.

7. The emulsion composition according to any one of claims 1 to 6, which is a gel having an α-type structure.

8. An emulsion composition described in any one of claims 1 to 7, for use on the skin.

9. A method for producing an emulsion composition containing the following components (A), (B), (C), (D), (E) and (F), in which the ceramides of component (B) are selected from naturally occurring ceramides represented by the following general formula (5) and pseudo-type ceramides represented by the following general formula (6), and in which the content mass ratio of component (E) to the total of components (A), (B), (C) and (D) [(E) / {(A)+(B)+(C)+(D)}] is 0.1 or more and 1 or less, the method comprising an emulsification step of emulsifying an oil phase component containing components (A) to (D) and an aqueous phase component containing water and component (E) at 70 to 95° C., except for the case in which the emulsion composition is one of the following (1) to (2). (A) one or more compounds selected from sphingosine, a salt of sphingosine, a pseudosphingosine, a salt of pseudosphingosine, an anionic surfactant, and a cationic surfactant (B) Ceramides (C) Glycerol fatty acid ester (D) Higher alcohol (E) A polymer having a light transmittance of 90% or more when 25 parts by mass of the polymer are mixed with 100 parts by mass of cetanol at 85° C. and then measured at 25° C., and a glass transition temperature Tg of the main chain of the polymer is 25° C. or less. (F) Water 【Chemistry 4】 [In formula (5), R 21 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 7 to 19 carbon atoms which may be substituted with a hydroxyl group; Z 1 represents a methylene group or a methine group; X 15 , X 16 , and X 17 each independently represent a hydrogen atom, a hydroxyl group, or an acetoxy group; X 18 represents a hydrogen atom or forms an oxo group together with the adjacent oxygen atom (provided that when Z 1 is a methine group, one of X 15 and X 16 is a hydrogen atom and the other does not exist; when X 18 forms an oxo group, X 17 does not exist); R 22 represents a hydroxyalkyl group or an acetoxymethyl group; R 23 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R 24 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 5 to 30 carbon atoms which may be substituted with a hydroxyl group; The dashed lines indicate that the bond may be an unsaturated bond. 【Chemistry 5】 [In formula (6), R 25 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 10 to 22 carbon atoms which may be substituted with a hydroxyl group, or a hydrogen atom; X 19 represents a hydrogen atom, an acetyl group, or a glyceryl group; R 26 represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 5 to 22 carbon atoms which may be substituted with a hydroxyl group or an amino group; R 27 represents a hydrogen atom or a hydrocarbon group having a total of 1 to 30 carbon atoms which may be substituted with a hydroxyl group, a hydroxyalkoxy group, an alkoxy group or an acetoxy group. (1) A compound represented by the following formula (COMP1): 【Chemistry 6】 [In formula (COMP1), R 101 represents a linear or branched alkyl group having 1 to 4 carbon atoms substituted with a carboxyl group, or a linear or branched alkyl group having 1 to 4 carbon atoms substituted with a carboxylate group having an alkyl chain having 1 to 4 carbon atoms; R 102 and R 103 each independently represent a linear or branched alkyl group having 1 to 4 carbon atoms. (2) O / W / O type topical skin preparation.

10. A method for improving skin quality, comprising a step of applying the emulsion composition according to any one of claims 1 to 8 to the skin.

Images