JP2008231061A - Cosmetic addition composition, cosmetic and their manufacturing methods - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cosmetic addition composition in which ceramide is dissolved at high concentration in a nonpolar oil such as a hydrocarbon oil, a cosmetic added therewith, and their manufacturing methods. <P>SOLUTION: The cosmetic addition composition comprises ceramide, a nonpolar oil, a nonionic surface active agent, and a polyhydric alcohol and, based on 1 pt.mass ceramide, the nonpolar oil is not less than 3 pts.mass, the polyhydric alcohol is not less than 3.5 pts.mass, and the nonionic surface active agent is not less than 1 pt.mass, and the content of a nonionic surface active agent having an HLB value of 6.0 or less is not less than 50 mass% the entire amount of the nonionic surface active agents. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cosmetic additive composition, a cosmetic, and a method for producing them.

Ceramide is a lipid present in the stratum corneum and is used in various cosmetics because of its high moisture retention. However, since ceramides (especially natural ceramides) are difficult to dissolve, a method of mixing with polyglycerol mono fatty acid ester and liquid oil and then mixing with an aqueous medium (Patent Document 1), or a predetermined nonionic surface activity A method of solubilizing with a combination of an agent and a polyhydric alcohol (Patent Documents 2 and 3), a method using a glycerol fatty acid ester as a solubilizer (Patent Document 4), and the like have been studied.
JP 2002-114631 A Japanese Patent Laid-Open No. 2002-338459 JP 2003-113393 A Japanese National Patent Publication No. 9-505065

  However, there is currently no known method for dissolving ceramide at a high concentration in non-polar oils such as hydrocarbon oils, which are generally used in cosmetics and are highly safe. Even when the above-described method is employed, the ceramide once dissolved may crystallize and precipitate, and the effect of adding ceramide may be lost.

  Therefore, an object of the present invention is to provide a cosmetic additive composition in which ceramide is dissolved at a high concentration in a non-polar oil such as hydrocarbon oil, a cosmetic composition to which the cosmetic composition is added, and a method for producing these compositions.

  In order to achieve the above object, the present invention provides a cosmetic additive composition containing ceramide, a nonpolar oil, a nonionic surfactant and a polyhydric alcohol. Content of nonionic surfactant with polar oil of 3 parts by mass or more, nonionic surfactant of 1 part by mass or more, polyhydric alcohol of 3.5 parts by mass or more, and HLB value of 6.0 or less Provides a composition for adding cosmetics, which is 50% by mass or more of the total amount of the nonionic surfactant.

  The cosmetic additive composition of the present invention is 3 parts by mass or more of nonpolar oil, 1 part by mass or more of nonionic surfactant, and 3.5 parts by mass or more of polyhydric alcohol with respect to 1 part by mass of ceramide. In addition, it is characterized in that a low HLB nonionic surfactant having an HLB value of 6.0 or less is contained in an amount of 50% by mass or more of the total amount of the nonionic surfactant. Since the composition for adding cosmetics of the present invention has such a configuration, the solubility of ceramide in nonpolar oil is improved, and even when added to cosmetics, precipitation of ceramide is suppressed.

  The cosmetic additive composition of the present invention may further contain a polar oil as long as the content of the nonpolar oil is greater than the content of the polar oil. By using a nonpolar oil in combination with a polar oil, the solubility of ceramide is improved, and the precipitation of ceramide during blending of cosmetics is more effectively suppressed.

  The nonpolar oil used in the cosmetic additive composition of the present invention is preferably a hydrocarbon oil. Hydrocarbon oil is a material often used in cosmetics and is known to have high safety. Therefore, if a hydrocarbon oil is used as the nonpolar oil, the cosmetic additive composition can be added to many types of cosmetics, and the safety of the resulting cosmetics is improved.

  In the cosmetic additive composition of the present invention, the nonionic surfactant is preferably a monoglycerol fatty acid ester, and the monoglycerol fatty acid ester preferably contains a self-emulsifying monoglycerol fatty acid ester. By using such a nonionic surfactant, the solubility of ceramide can be further enhanced.

  Further, it is preferable to use 1,3-butylene glycol as the polyhydric alcohol. When the polyhydric alcohol is 1,3-butylene glycol, the solubility of ceramide is improved. In addition, compatibility with other components is improved.

  One of the characteristics of the cosmetic additive composition of the present invention is that the concentration of ceramide can be increased. For example, based on the total mass of the cosmetic additive composition, the content of ceramide is 0.01 to 2.5% by mass, the content of nonpolar oil is 5% by mass or more, and the HLB value is 6.0 or less. The content of the ionic surfactant can be 2.0% by mass or more, and the content of the polyhydric alcohol can be 6% by mass or more.

  The cosmetic additive composition described above has 3 parts by mass or more of nonpolar oil, 1 part by mass or more of nonionic surfactant, and 3.5 parts by mass or more of polyhydric alcohol with respect to 1 part by mass of ceramide. These are mixed so that the content of the nonionic surfactant having an HLB value of 6.0 or less is 50% by mass or more of the total amount of the nonionic surfactant, and dissolved in ceramide. It can obtain by the manufacturing method of the composition for cosmetics addition provided with the process of obtaining a thing. This production method can also be regarded as a method for obtaining a ceramide solution or a method for dissolving ceramide.

  A cosmetic can be obtained by using the cosmetic additive composition of the present invention. That is, cosmetics containing the cosmetic additive composition of the present invention, emulsified cosmetics prepared by mixing the cosmetic additive composition of the present invention and an aqueous medium, and the like are provided. In addition, the cosmetics of this invention may consist only of the composition for cosmetics addition, and in this case, the composition for cosmetics addition itself becomes cosmetics.

  In this emulsified cosmetic, the nonpolar oil is 3 parts by mass or more, the nonionic surfactant is 1 part by mass or more, and the polyhydric alcohol is 3.5 parts by mass or more with respect to 1 part by mass of ceramide. (However, the content of the nonionic surfactant having an HLB value of 6.0 or less is 50% by mass or more of the total amount of the nonionic surfactant) to obtain a ceramide solution And a step of mixing an aqueous medium with the ceramide solution.

  Provided are a cosmetic additive composition in which ceramide is dissolved in a non-polar oil such as a hydrocarbon oil at a high concentration, a cosmetic composition to which the composition is added, and a method for producing them.

  Hereinafter, preferred embodiments of the present invention will be described in detail.

  The ceramide used in the cosmetic additive composition of the present invention includes both ceramide and a ceramide-like structural substance.

Examples of the ceramide include natural ceramides such as ceramide 1, ceramide 2, ceramide 3, ceramide 4, ceramide 5, ceramide 6 and ceramide 7 shown below, sphingomyelin, sphingophospholipid, glycosphingolipid, phytosphingoglycolipid and the like. Is mentioned.

［式中、Ｒ^１及びＲ^２は同一又は異なり、水酸基が置換していてもよい炭素数８〜２６の直鎖又は分岐鎖の飽和又は不飽和の炭化水素基を示す。］

［式中、Ｒ^３は炭素数１０〜２６の直鎖又は分岐鎖の飽和又は不飽和の炭化水素基を示し、Ｒ^４は炭素数９〜２５の直鎖又は分岐鎖の飽和又は不飽和の炭化水素基を示し、Ｘ^１及びＹ^１は、水素原子又は水酸基を示し、ａは０又は１の数を示し、ｃは０〜４の数を示し、ｂ及びｄは０〜３の数を示す。］

［式中、Ｒ^５及びＲ^６は同一又は異なり、炭素数１〜４０の直鎖又は分岐鎖の飽和又は不飽和のヒドロキシル化されていてもよい炭化水素基を示し、Ｒ^７は炭素数１〜６の直鎖若しくは分岐鎖のアルキレン基又は単結合を示し、Ｒ^８は水素原子、炭素数１〜１２の直鎖若しくは分岐鎖のアルコキシ基又は２，３−ジヒドロキシプロピルオキシ基を示す。ただしＲ^７が単結合の時はＲ^８は水素原子である。］

［式中、Ｒ^９は炭素数４〜４０のヒドロキシル化されていてもよい炭化水素基を示し、Ｒ^１０は炭素数３〜６の直鎖又は分岐鎖のアルキレン基を示し、Ｒ^１１は炭素数１〜１２の直鎖又は分岐鎖のアルコキシ基を示す。］

［式中、Ｒ^５、Ｒ^６、Ｒ^１０、Ｒ^１１は前記と同じ意味を示す。］

［式中、Ｒ^５、Ｒ^６及びＲ^７は前記と同じ意味を示し、Ｒ^１２は水素原子、炭素数１〜１２の直鎖若しくは分岐鎖のアルコキシ基又は２，３−エポキシプロピルオキシ基を示す。ただし、Ｒ^７が単結合の時Ｒ^１２は水素原子である］ Examples of the ceramide-like structural substance include compounds represented by the following general formulas (1) to (6).

[Wherein, R ¹ and R ² are the same or different and each represents a linear or branched saturated or unsaturated hydrocarbon group having 8 to 26 carbon atoms which may be substituted with a hydroxyl group. ]

[Wherein R ³ represents a linear or branched saturated or unsaturated hydrocarbon group having 10 to 26 carbon atoms, and R ⁴ represents a saturated or unsaturated linear or branched chain group having 9 to 25 carbon atoms. Represents a hydrocarbon group, X ¹ and Y ¹ represent a hydrogen atom or a hydroxyl group, a represents a number of 0 or 1, c represents a number of 0 to 4, b and d represent a number of 0 to 3. Show. ]

[Wherein, R ⁵ and R ⁶ are the same or different and each represents a linear or branched, saturated or unsaturated, optionally substituted hydroxyl group hydrocarbon group having 1 to 40 carbon atoms, and R ⁷ represents one carbon atom. -6 linear or branched alkylene group or a single bond, R ⁸ represents a hydrogen atom, a linear or branched alkoxy group having 1 to 12 carbon atoms, or a 2,3-dihydroxypropyloxy group. However, when R ⁷ is a single bond, R ⁸ is a hydrogen atom. ]

[In the formula, R ⁹ represents an optionally hydroxylated hydrocarbon group having 4 to 40 carbon atoms, R ¹⁰ represents a linear or branched alkylene group having 3 to 6 carbon atoms, and R ¹¹ represents carbon. The linear or branched alkoxy group of number 1-12 is shown. ]

[Wherein, R ⁵ , R ⁶ , R ¹⁰ and R ¹¹ have the same meaning as described above. ]

[Wherein R ⁵ , R ⁶ and R ⁷ represent the same meaning as described above, and R ¹² represents a hydrogen atom, a linear or branched alkoxy group having 1 to 12 carbon atoms, or a 2,3-epoxypropyloxy group. Show. However, when R ⁷ is a single bond, R ¹² is a hydrogen atom]

  As the ceramide, it is preferable to use at least one natural ceramide selected from the group consisting of ceramide 1, ceramide 2, ceramide 3, ceramide 4, ceramide 5, ceramide 6 and ceramide 7, and ceramide 1 and / or ceramide 3 is used. More preferably, it is used. Since such ceramide is excellent in solubility in nonpolar oils, nonionic surfactants and polyhydric alcohols, a high-concentration cosmetic composition can be obtained. It also has excellent moisture retention when used as a cosmetic.

  The content of ceramide is preferably 0.01 to 10% by mass, more preferably 0.05 to 10% by mass, still more preferably 0.05 to 7% by mass, based on the total mass of the cosmetic additive composition. 1 to 7% by mass is particularly preferable. When the ceramide content is less than 0.01% by mass, it is necessary to increase the amount of the cosmetic additive composition when obtaining a cosmetic containing a sufficient amount of ceramide. The relative content of surfactant and polyhydric alcohol is increased. When the content of ceramide exceeds the above upper limit value, it takes time to produce the composition for adding cosmetics, and heating at a high temperature is required, which may cause decomposition or modification. .

  The nonpolar oil used in the cosmetic additive composition of the present invention is an oil having no polar group in the molecule, and examples thereof include hydrocarbon oils and silicone oils (polydimethylsiloxane and the like). As the hydrocarbon oil, squalane, squalene, pristane, paraffin, isoparaffin, liquid paraffin, liquid isoparaffin, ozokerite, ceresin, petrolatum, isododecane, microcrystalline wax, liquid lanolin, polydecene, hydrogenated polyisobutene and the like can be used.

  The non-polar oil is preferably a hydrocarbon oil because it is widely used in cosmetics and has high versatility. As the hydrocarbon oil, squalane, squalene, and liquid paraffin are preferred, and squalane is particularly preferred.

  The content of nonpolar oil must be 3 parts by mass or more with respect to 1 part by mass of ceramide, preferably 3 to 150 parts by mass with respect to 1 part by mass of ceramide, and 3 to 60 parts by mass. More preferably, it is more preferably 3 to 30 parts by mass, and particularly preferably 3 to 10 parts by mass. When the content of the nonpolar oil is less than 3 parts by mass with respect to 1 part by mass of ceramide, the ceramide cannot be sufficiently dissolved in the cosmetic additive composition. Further, when the content of nonpolar oil exceeds the above upper limit, it is necessary to increase the amount of the composition for adding cosmetics when obtaining a cosmetic containing a sufficient amount of ceramide. The relative content of increases.

  The nonpolar oil is preferably 5% by mass or more, preferably 5 to 70% by mass, more preferably 5 to 50% by mass, still more preferably 5 to 40% by mass, based on the total mass of the cosmetic additive composition. -30 mass% is particularly preferred. When the content of the nonpolar oil is less than 5% by mass, the solubility of ceramide may be insufficient. Moreover, when content of nonpolar oil exceeds the said upper limit, content of nonpolar oil in cosmetics increases relatively.

  In the cosmetic additive composition of the present invention, a nonpolar oil and a polar oil may be used in combination. Here, the polar oil refers to an oil having a polar bond (polar group) such as an ester bond in the molecule. When using a nonpolar oil and a polar oil together, it is preferable that the content of the nonpolar oil is greater than the content of the polar oil. Specifically, the content of polar oil is preferably 60 parts by mass or less, more preferably 35 parts by mass or less, and still more preferably 25 parts by mass or less with respect to 100 parts by mass of nonpolar oil. Moreover, when based on the total mass of the cosmetic additive composition, the polar oil is preferably 25% by mass or less, more preferably 20% by mass or less, further preferably 15% by mass or less, and particularly preferably 10% by mass or less. .

  The polar oil that can be used in the present invention is not particularly limited as long as it is a polar oil component, and it may be liquid or solid. Specifically, avocado oil, almond oil, olive oil, sesame oil, sasanqua oil, safflower oil, soybean oil, camellia oil, corn oil, rapeseed oil, persic oil, castor oil, cottonseed oil, peanut oil, turtle oil, mink oil , Egg yolk oil, cacao butter, palm oil, palm kernel oil, molasses, palm oil, beef tallow, lard, hardened oil, hardened castor oil, beeswax, carnauba wax, whale wax, lanolin, liquid lanolin, hydrogenated lanolin , Waxes such as hard lanolin, candelilla wax, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, linoleic acid, linolenic acid, 12-hydroxystearic acid, tall oil, lanolin fatty acid, isostearic acid Fatty acid derivatives such as dimer acid, dibasic acid, fatty acid chloride, fatty acid anhydride, etc. Higher alcohols such as alcohol, cetanol, stearyl alcohol, oleyl alcohol, lanolin alcohol, cholesterol, phytosterol, 2-hexyldecanol, isostearyl alcohol, 2-octyldodecanol, isopropyl myristate, isopropyl palmitate, butyl stearate, laurin Hexyl acid, myristyl myristate, oleyl oleate, decyl oleate, octyldodecyl myristate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, diethyl phthalate, dibutyl phthalate, lanolin acetate, ethylene glycol monostearate, mono Examples include esters such as propylene glycol stearate and propylene glycol dioleate.

  The nonionic surfactant used in the cosmetic additive composition of the present invention is a surfactant that does not have a group capable of dissociating into ions in an aqueous solution. Nonionic surfactants include ether type nonions such as polyoxyethylene alkyl and alkyl phenyl ether, alkylallyl formaldehyde condensed polyoxyethylene ether, polyoxyethylene polyoxypropylene block copolymer, polyoxyethylene polyoxypropyl alkyl ether, etc. Surfactant: Ether ester type nonionic surfactant such as polyoxyethylene ether of glycerin ester, polyoxyethylene ether of sorbitan ester, polyoxyethylene ether of sorbitol ester; polyethylene glycol fatty acid ester, glycerin ester, polyglycerin Ester-type nonionic surfactants such as esters, sorbitan esters, propylene glycol esters, sucrose esters; fats Acid alkanolamide, polyoxyethylene fatty acid amides, nitrogen-containing type nonionic surfactants such as polyoxyethylene alkyl amines.

  Nonionic surfactants that can be used in the present invention include sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquistearate, sorbitan tristearate, sorbitan monoisostearate Sorbitan fatty acid esters such as sorbitan sesquiisostearate, sorbitan monooleate, sorbitan sesquioleate, sorbitan trioleate, polyoxyethylene (20E.O.) sorbitan monolaurate, polyoxyethylene (20E .O.) Sorbitan monopalmitate, polyoxyethylene (20E.O.) sorbitan monostearate, polyoxyethylene (20E.O.) sorbita Tristearate, polyoxyethylene (6E.O.) sorbitan monostearate, polyoxyethylene (20E.O.) sorbitan monooleate, polyoxyethylene (20E.O.) sorbitan trioleate, Polyoxyethylene sorbitan such as polyoxyethylene (6E.O.) sorbitan monooleate, polyoxyethylene (60E.O.) sorbitan monooleate, polyoxyethylene (20E.O.) sorbitan monoisostearate Fatty acid esters, polyoxyethylene (20E.O.) sorbitol monolaurate, polyoxyethylene (6E.O.) sorbitol monopalmitate, polyoxyethylene (6E.O.) sorbitol hexastearate, polyoxy Ethylene (6E.O.) sorbitol tetraoleate , Polyoxyethylene sorbitol fatty acid esters such as polyoxyethylene (60E.O.) sorbitol tetraoleate, glycerin coconut oil fatty acid ester, glyceryl monomyristic acid ester, glyceryl monopalmitic acid ester, glyceryl monostearic acid ester, glyceryl Glycerin fatty acid esters such as monoisostearic acid ester, glyceryl monooleic acid ester, glycerin castor oil fatty acid ester, glycerin hydrogenated castor oil fatty acid ester, diglyceryl monolauric acid ester, diglyceryl monomyristic acid ester, diglyceryl monopalmitic acid ester, Diglyceryl monostearate, diglyceryl monoisostearate, diglyceryl monooleate, hexag Seryl monolaurate, hexaglyceryl monomyristate, hexaglyceryl monopalmitate, hexaglyceryl monostearate, hexaglyceryl monoisostearate, hexaglyceryl monooleate, decaglyceryl monolaurate, decaglyceryl monomyristine Acid esters, decaglyceryl monopalmitate, decaglyceryl monostearate, decaglyceryl monoisostearate, decaglyceryl monooleate, and other polyglycerin fatty acid esters, propylene glycol monolaurate, propylene glycol monostearate Propylene glycol fatty acid esters such as polyoxyethylene (5E .O.) Glyceryl monooleate, polyoxyethylene (10E.O.) glyceryl monooleate, polyoxyethylene (15E.O.) glyceryl monooleate, polyoxyethylene (20E.O.) glyceryl Monooleate, polyoxyethylene (5E.O.) glyceryl monostearate, polyoxyethylene (10E.O.) glyceryl monostearate, polyoxyethylene (15E.O.) glyceryl monostearate, etc. Ethylene oxide derivatives of glycerin fatty acid esters, polyoxyethylene (30E.O.) propylene glycol fatty acid esters such as propylene glycol monostearate, polyoxyethylene (6E.O.) monolaurate, poly Oxyethylene (10E.O.) monolaurate, polyoxy Ethylene (30E.O.) monolaurate, polyoxyethylene (1E.O.) monostearate, polyoxyethylene (2E.O.) monostearate, polyoxyethylene (4E.O.) monostearate Acid ester, polyoxyethylene (10E.O.) monostearate, polyoxyethylene (25E.O.) monostearate, polyoxyethylene (40E.O.) monostearate, polyoxyethylene (45E .O.) Monostearate, polyoxyethylene (55E.O.) monostearate, polyoxyethylene (2E.O.) monooleate, polyoxyethylene (6E.O.) monooleate , Polyoxyethylene (10E.O.) monooleate, polyethylene glycol distearate, polyethylene glycol dioleate, poly Polyethylene glycol fatty acid esters such as tylene glycol diisostearate, polyoxyethylene (2E.O.) lauryl ether, polyoxyethylene (4.2EO) lauryl ether, polyoxyethylene (9E.O.) lauryl ether, polyoxyethylene (21E.O.) lauryl ether, polyoxyethylene (25E.O.) lauryl ether, polyoxyethylene (2E.O.) cetyl ether, polyoxyethylene (5.5EO) cetyl ether, polyoxyethylene (7E.O .) Cetyl ether, polyoxyethylene (10E.O.) cetyl ether, polyoxyethylene (15E.O.) cetyl ether, polyoxyethylene (20E.O.) cetyl ether, polyoxyethylene (25E.O.) Cetyl ether, polyoxyethylene (30E.O.) cetyl ether, polyoxyethylene (40E.O.) cetyl ether, polyoxyethylene (4E. O.) Stearyl ether, polyoxyethylene (10E.O.) stearyl ether, polyoxyethylene (20E.O.) stearyl ether, polyoxyethylene (2E.O.) oleyl ether, polyoxyethylene (7E.O. ) Oleyl ether, polyoxyethylene (10E.O.) oleyl ether, polyoxyethylene (15E.O.) oleyl ether, polyoxyethylene (20E.O.) oleyl ether, polyoxyethylene (50E.O.) oleyl Ether, polyoxyethylene (5E.O.) behenyl ether, polyoxyethylene (10E.O.) behenyl ether, polyoxyethylene (20E.O.) behenyl ether, polyoxyethylene (30E.O.) behenyl ether, Polyoxyethylene (30E.O.) hexyl decyl ether, polyoxyethylene (30E.O.) decyl tetradecyl ether, polyoxyethylene (5E.O.) tridecyl ether, poly Xylethylene (10E.O.) tridecyl ether, polyoxyethylene (2E.O.) abiethyl ether, polyoxyethylene (5E.O.) abiethyl ether, polyoxyethylene (10E.O.) abiethyl ether, Polyoxyethylene (20E.O.) Abiethyl ether, Polyoxyethylene (5E.O.) Lanolin alcohol, Polyoxyethylene (10E.O.) Lanolin alcohol, Polyoxyethylene (20E.O.) Lanolin alcohol, Poly Polyoxyethylene alkyl ethers such as oxyethylene (30E.O.) lanolin alcohol, polyoxyethylene (40E.O.) lanolin alcohol, polyoxyethylene polyoxypropylene cetyl ether, polyoxyethylene polyoxypropylene behenyl ether, etc. Polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene (2E.O.) nonyl Enyl ether, polyoxyethylene (5E.O.) nonylphenyl ether, polyoxyethylene (7.5EO) nonylphenyl ether, polyoxyethylene (10E.O.) nonylphenyl ether, polyoxyethylene (15E.O.) nonyl Phenyl ether, polyoxyethylene (18E.O.) nonylphenyl ether, polyoxyethylene (20E.O.) nonylphenyl ether, polyoxyethylene (3E.O.) octylphenyl ether, polyoxyethylene (10E.O. ) Polyoxyethylene alkylphenyl ethers such as octylphenyl ether, polyoxyethylene (15E.O.) octylphenyl ether, polyoxyethylene (30E.O.) octylphenyl ether, polyoxyethylene (3E.O.) castor Oil, polyoxyethylene (10E.O.) castor oil, polyoxyethylene (20E.O.) castor oil, polyoxyethylene (40E.O. ) Castor oil, polyoxyethylene (50E.O.) castor oil, polyoxyethylene (60E.O.) castor oil and other polyoxyethylene castor oils, polyoxyethylene (5E.O.) castor oil, poly Oxyethylene (7.5EO) hydrogenated castor oil, polyoxyethylene (10E.O.) hydrogenated castor oil, polyoxyethylene (20E.O.) hydrogenated castor oil, polyoxyethylene (40E.O.) hydrogenated castor oil, poly Oxyethylene (50E.O.) hydrogenated castor oil, polyoxyethylene (60E.O.) hydrogenated castor oil, polyoxyethylene (80E.O.) hydrogenated castor oil, polyoxyethylene (100E.O.) hydrogenated castor oil Polyoxyethylene hydrogenated castor oil such as sucrose fatty acid esters such as sucrose lauric acid monoester, sucrose myristic acid monoester, sucrose palmitic acid monoester, sucrose stearic acid monoester, sucrose oleic acid monoester Kind etc. It is shown, to select and use one or more from these.

  In the present invention, a nonionic surfactant having an HLB value of 6.0 or less must be contained in an amount of 50% by mass or more based on the total amount of the nonionic surfactant.

  Nonionic surfactants having an HLB value of 6 or less include glyceryl monostearate, glyceryl monoisostearate, diglyceryl monooleate, diglyceryl dioleate, diglyceryl monoisostearate, tetraglyceryl monooleate, trioleic acid Decaglyceryl, decaglyceryl triisostearate, decaglyceryl pentaoleate, decaglyceryl pentaisostearate, sorbitan monooleate, sorbitan sesquioleate, sorbitan trioleate, sorbitan monoisostearate, sorbitan sesquiisostearate, polyoxyethylene ( 2) Monooleate, polyoxyethylene (3) monooleate, polyoxyethylene (6) monooleate, polyoxyethylene (3) castor oil, poly Xylethylene (10) castor oil, polyoxyethylene (5) hydrogenated castor oil, polyoxyethylene (3) monoisostearate, polyoxyethylene (2) diisostearate, polyoxyethylene (3) diisostearate, Polyoxyethylene (4) diisostearate, polyoxyethylene (6) diisostearate, polyoxyethylene (12) diisostearate, polyoxyethylene (3) glyceryl monoisostearate, polyoxyethylene (5 ) Glyceryl monoisostearate, polyoxyethylene (3) glyceryl triisostearate, polyoxyethylene (5) glyceryl triisostearate, polyoxyethylene (10) glyceryl triisostearate, polyoxyethylene (20) glyceryl Triisos Allate, polyoxyethylene (3) trimethylolpropane triisostearate, polyoxyethylene (20) trimethylolpropane triisostearate, polyoxyethylene (5) hydrogenated castor oil monoisostearate, polyoxyethylene (10) Hydrogenated castor oil monoisostearate, polyoxyethylene (15) hydrogenated castor oil monoisostearate, polyoxyethylene (20) hydrogenated castor oil monoisostearate, polyoxyethylene (5) hydrogenated castor oil triisostearate, Polyoxyethylene (10) hydrogenated castor oil triisostearate, polyoxyethylene (15) hydrogenated castor oil triisostearate, polyoxyethylene (20) hydrogenated castor oil triisostearate, polyoxyethylene (30) hydrogenated castor Oil bird Isostearate, glyceryl isostearate, sucrose stearate, sucrose oleate, sucrose palmitate, sucrose myristic ester, sucrose laurate, polyoxyethylene / polyoxypropylene block copolymer Etc. In addition, polyoxyethylene (3) is synonymous with (3E.O.), and others are also the same.

  As the nonionic surfactant, monoglycerol fatty acid ester is preferable, and as the monoglycerol fatty acid ester, glyceryl monostearate is preferable. As glyceryl monostearate, lipophilic glyceryl monostearate and / or self-emulsifying glyceryl monostearate is particularly preferable. Lipophilic glyceryl monostearate corresponds to a nonionic surfactant having an HLB value of 6.0 or less, and self-emulsifying glyceryl monostearate is a nonionic surfactant having an HLB value of more than 6.0. Applicable.

  The nonionic surfactant having an HLB value of 6.0 or less preferably has an HLB value of 1.0 to 6.0, an HLB value of 1.0 to 4.0, and more preferably 2.0 to 4. 0.0 is preferred.

  In the present invention, if a nonionic surfactant having an HLB value of 6.0 or less is not used or if it is used, the solubility of ceramide is less than 50% by mass of the total amount of the nonionic surfactant. It becomes insufficient. From the viewpoint of improving the solubility of ceramide and reliably preventing precipitation, the content of the nonionic surfactant having an HLB value of 6.0 or less is 55 to 100% by mass of the total amount of the nonionic surfactant. It is preferable to make it 60 to 100% by mass.

  In the cosmetic additive composition of the present invention, the content of the nonionic surfactant must be 1 part by mass or more with respect to 1 part by mass of ceramide, and 1 per 1 part by mass of ceramide. It is preferably ˜30 parts by mass, more preferably 1 to 15 parts by mass, still more preferably 1 to 7% by mass, and particularly preferably 1 to 3% by mass. When the content of the nonionic surfactant is less than 1 part by mass with respect to 1 part by mass of ceramide, the ceramide cannot be sufficiently dissolved in the cosmetic additive composition. In addition, when the content of the nonionic surfactant exceeds the above upper limit, when obtaining a cosmetic containing a sufficient amount of ceramide, it is necessary to increase the amount of the cosmetic additive composition added, The relative content of nonionic surfactant is increased.

  When based on the total mass of the cosmetic additive composition, the content of the nonionic surfactant is preferably 4 to 20% by mass, more preferably 4 to 15% by mass, More preferably, it is 15 mass%. The content of the nonionic surfactant having an HLB value of 6.0 or less is preferably 2.0% by mass or more, based on the total mass of the cosmetic additive composition, More preferably, it is more preferably 5 to 10% by mass. However, the content of the nonionic surfactant having an HLB value of 6.0 or less must be 50% by mass or more of the total amount of the nonionic surfactant.

  The polyhydric alcohol used in the cosmetic additive composition of the present invention is not particularly limited in the valence, but it is preferable to use a dihydric to hexahydric alcohol, and more preferably to use a dihydric to tetrahydric alcohol, It is more preferable to use a dihydric alcohol, and it is particularly preferable to use a dihydric alcohol. Moreover, as carbon number of a polyhydric alcohol, a C1-C10 polyhydric alcohol is preferable and a C2-C6 polyhydric alcohol is more preferable.

  Examples of such polyhydric alcohols include 1,3-butylene glycol, 1,2-pentanediol, 1,3-pentanediol, glycerin, sorbitol, mannitol, diglycerin, polyglycerin, ethylene glycol, diethylene glycol, polyethylene glycol, Examples include propylene glycol, dipropylene glycol and pentaerythritol.

  Particularly preferred as the polyhydric alcohol is 1,3-butylene glycol, and the solubility of ceramide can be improved by using this alcohol. Also, compatibility with other components is improved.

  The content of the polyhydric alcohol should be 3.5 parts by mass or more with respect to 1 part by mass of ceramide, preferably 3.5 to 50 parts by mass with respect to 1 part by mass of ceramide. More preferably, it is -40 mass parts, and it is still more preferable that it is 3.5-35 mass parts. When the content of the polyhydric alcohol is less than 3.5 parts by mass with respect to 1 part by mass of ceramide, the ceramide cannot be sufficiently dissolved in the cosmetic additive composition. Further, when the content of the polyhydric alcohol exceeds the above upper limit, it is necessary to increase the amount of the composition for adding cosmetics when obtaining a cosmetic containing a sufficient amount of ceramide. The relative content of increases.

  The polyhydric alcohol is preferably 6% by mass or more, preferably 6 to 40% by mass, more preferably 10 to 30% by mass, and further 10 to 25% by mass based on the total mass of the cosmetic additive composition. preferable. When the content of the polyhydric alcohol is less than 6% by mass, the solubility of ceramide may be lowered. Moreover, when content of a polyhydric alcohol exceeds the said upper limit, content of the polyhydric alcohol in cosmetics increases relatively.

  The cosmetic of the present invention contains the cosmetic additive composition of the present invention. In consideration of containing ceramide as a component, the cosmetic additive composition of the present invention is preferably used as an emulsified cosmetic by mixing with an aqueous medium, and particularly used as an oil-in-water emulsified cosmetic. Is preferred.

  The content of the cosmetic additive composition in the cosmetic is preferably 1% by mass or more, more preferably 5 to 90% by mass, and still more preferably 10 to 80% by mass based on the total mass of the cosmetic. About emulsified cosmetics, 10-50 mass% is preferable, as for content of the composition for cosmetics addition on the basis of the total mass of cosmetics, 15-45 mass% is more preferable, and 20-35 mass% is still more preferable.

  In the cosmetic additive composition, cosmetic or emulsified cosmetic of the present invention, in addition to the above essential components, a gelling agent, an oil component, and a humectant, as necessary, within a range not impairing the effects of the present invention. , Preservatives, antioxidants, UV absorbers, UV protection agents, polymers, surfactants, inorganic / organic powders, dyes, pigments, drugs, alcohols (higher alcohols such as cetyl alcohol, stearyl alcohol, and behenyl alcohol) , Solvents, fragrances, storage stability improvers (for example, inorganic salts such as sodium chloride and calcium chloride, clay minerals), film forming agents (for example, polyvinylpyrrolidone-based film agents, acrylic acid-based film agents), whitening agents, plants An extract, a cell activator, a blood circulation promoter, an antiseborrheic agent, a water-soluble polymer, a thickener, a sequestering agent, and the like can be appropriately blended.

  The cosmetic additive composition described above has 3 parts by mass or more of nonpolar oil, 1 part by mass or more of nonionic surfactant, and 3.5 parts by mass or more of polyhydric alcohol with respect to 1 part by mass of ceramide. These are mixed so that the content of the nonionic surfactant having an HLB value of 6.0 or less is 50% by mass or more of the total amount of the nonionic surfactant, and dissolved in ceramide. It can be obtained by a production method comprising a step of obtaining a product (hereinafter referred to as “ceramide dissolution step”).

  In the ceramide dissolution step, it is preferable to heat and mix ceramide, nonpolar oil, polyhydric alcohol, and nonionic surfactant, and the heating temperature can be, for example, 80 to 95 ° C.

  The above-described emulsified cosmetic can be obtained by a production method including a step of mixing an aqueous medium with a ceramide solution obtained in the ceramide dissolution step (hereinafter referred to as “emulsification step”).

  The emulsification may be performed by adding a cosmetic additive composition (corresponding to an oil phase) to an aqueous medium (corresponding to an aqueous phase) or by adding an aqueous medium to the cosmetic additive composition. Good. It is preferable to add a surfactant to the aqueous medium in order to facilitate emulsification. Moreover, the additive component mentioned above can be contained in the emulsified cosmetic by adding it in advance to the aqueous medium or by adding it directly to the cosmetic after the emulsification step.

  Such emulsified cosmetics include basic cosmetics such as emulsions such as massage lotions and emollient lotions, creams such as massage creams, cleansing creams and emollient creams, makeup base lotions, makeup base creams, foundations, eye colors, Makeup cosmetics such as teak color, lipstick, sunscreen lotion, sunscreen cosmetics such as sunscreen cream, body cosmetics such as hand lotion, hand cream, leg cream, body lotion, hair makeup such as hair cream It can be used as a fee.

  EXAMPLES Hereinafter, although this invention is demonstrated more concretely based on an Example and a comparative example, this invention is not limited to a following example at all.

(Examples 1-4, Comparative Examples 1-3)
The components (oil phase) described in Table 1 below were mixed in parts by mass described in the same table, and dissolved by heating at 85 ° C. And the dissolution condition after heating for 20 minutes was observed visually. Table 1 shows the solubility results. In addition, it was set as (circle) when melt | dissolving, (triangle | delta) when substantially melt | dissolving, and x when not melt | dissolving.

(Examples 5-6, Comparative Examples 4-5)
The components (oil phase) described in Table 2 below were mixed in parts by mass described in the same table and dissolved by heating at 85 ° C. And the dissolution condition after heating for 20 minutes was observed visually. Table 2 shows the solubility results. In addition, it was set as (circle) when melt | dissolving, and was set as x when not melt | dissolving.

(Examples 7-8, Comparative Examples 6-10)
The components shown in Table 3 as the oil phase and the component shown in the water phase 1 were dissolved by heating at 85 ° C. After the water phase 1 (or vice versa) was added to the oil phase and emulsified, a 1% by weight aqueous solution of carbopol (aqueous phase 2) heated to 85 ° C. was added and mixed. The mixture was cooled with stirring, and an L-arginine 10 mass% aqueous solution (aqueous phase 3) was added at 40 ° C. and mixed well to obtain an oil-in-water emulsion composition. The content (mass) of each component is as shown in Table 3.

After the oil phase was heated, the dissolution of the oil phase was visually confirmed. The results are shown in Table 3. The results are shown as “◯” when dissolved and “x” when not dissolved. Moreover, the obtained oil-in-water emulsion composition was preserve | saved at each temperature of Table 3 in the airtight state, and the state after period progress was observed visually. The results are shown in Table 3. When the preservability is good, the result is ◯, and when the preservability is not good, the result is x.

(Example 9, Comparative Example 11)
The components shown in Table 4 as the oil phase and the component shown in the aqueous phase 1 were each dissolved by heating at 85 ° C. After the water phase 1 (or vice versa) was added to the oil phase and emulsified, a 1% by weight aqueous solution of carbopol (aqueous phase 2) heated to 85 ° C. was added and mixed. Cooling with stirring, an oil-in-water emulsion composition was obtained. The content (mass) of each component is as shown in Table 4.

After the oil phase was heated, the dissolution of the oil phase was visually confirmed. The results are shown in Table 4. When dissolved, it was indicated as “◯”, and when not dissolved, it was indicated as “x”.

Claims (9)

A cosmetic additive composition comprising ceramide, a nonpolar oil, a nonionic surfactant and a polyhydric alcohol,
3 parts by mass or more of nonpolar oil, 1 part by mass or more of nonionic surfactant, 3.5 parts by mass or more of polyhydric alcohol, and HLB value of 6.0 or less with respect to 1 part by mass of ceramide A cosmetic additive composition, wherein the content of the nonionic surfactant is 50% by mass or more of the total amount of the nonionic surfactant.   2. The cosmetic additive composition according to claim 1, further comprising a polar oil, wherein the content of the nonpolar oil is larger than the content of the polar oil.   3. The cosmetic additive composition according to claim 1 or 2, wherein the nonpolar oil is a hydrocarbon oil.   The composition for cosmetic addition according to any one of claims 1 to 3, wherein the nonionic surfactant is a monoglycerin fatty acid ester.   Nonionic with a ceramide content of 0.01 to 2.5% by mass, a nonpolar oil content of 5% by mass or more, and an HLB value of 6.0 or less, based on the total mass of the cosmetic additive composition. The cosmetic additive composition according to any one of claims 1 to 4, wherein the surfactant content is 2.0 mass% or more and the polyhydric alcohol content is 6 mass% or more. object.   Cosmetics containing the composition for cosmetics addition as described in any one of Claims 1-5.   An emulsified cosmetic comprising the cosmetic additive composition according to any one of claims 1 to 5 and an aqueous medium.   These are mixed so that 1 part by mass of ceramide is 3 parts by mass or more of nonpolar oil, 1 part by mass or more of nonionic surfactant, and 3.5 parts by mass of polyhydric alcohol (however, Characterized in that the content of the nonionic surfactant having an HLB value of 6.0 or less is 50% by mass or more of the total amount of the nonionic surfactant), and a step of obtaining a ceramide solution. A method for producing a cosmetic additive composition. These are mixed so that 1 part by mass of ceramide is 3 parts by mass or more of nonpolar oil, 1 part by mass or more of nonionic surfactant, and 3.5 parts by mass of polyhydric alcohol (however, The content of the nonionic surfactant having an HLB value of 6.0 or less is 50% by mass or more of the total amount of the nonionic surfactant), and a step of obtaining a ceramide solution,
And a step of mixing an aqueous medium with the ceramide-dissolved product.