JP6600455B2 - Oil-in-water emulsified cosmetic - Google Patents

Description

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

Regarding oil-in-water emulsified cosmetics, there are techniques described in Patent Documents 1 to 3.
Patent Document 1 (Japanese Patent Application Laid-Open No. 2014-91735) includes a crosslinked (meth) acrylate resin powder, a sodium acrylate / acryloyldimethyltaurine copolymer, a liquid oil at 25 ° C., and a hydrophobically treated powder. Techniques relating to oil-in-water emulsified cosmetics containing a specific proportion of body and water are described. In addition, the cosmetics described in this document reduce the squeaky feeling when applied to the skin, and are easy to stretch and can be applied uniformly to the skin, so there is no sense of incongruity and it looks natural. It is said that the smooth feel will continue.

  Patent Document 2 (Japanese Patent Laid-Open No. 2006-8996) includes a copolymer of acryloyldimethyltaurine salt having a specific structure and hydroxyethyl acrylate in an aqueous phase, and powder in an oil phase. Techniques relating to oil-in-water emulsified compositions are described. Further, in the oil-in-water emulsion composition described in the same document, the viscosity is maintained, and the coalescence of emulsified particles over time and the aggregation / sedimentation of powder can be improved, and a good feeling of use can be obtained. Has been.

  Patent Document 3 (Japanese Patent Application Laid-Open No. 2005-272389) discloses zinc oxide, a crosslinked copolymer of acrylamide and 2-acrylamido-2-methylpropanesulfonic acid and / or an acrylic acid / acryloyldimethyltaurine sodium copolymer, a specific interface. A technique relating to an oil-in-water emulsified cosmetic in which an active agent, water and silicone oil are blended and zinc oxide is dispersed in an oil system containing silicone oil is described. In addition, the oil-in-water emulsified cosmetic described in the same document can stably contain highly transparent zinc oxide when applied to the skin, and also has excellent storage stability, good usability, and excellent water resistance. Therefore, it is said to be useful particularly in cosmetics such as sunscreens, makeup bases, and daytime serums for the purpose of protecting against ultraviolet rays.

JP 2014-91735 A JP 2006-8996 A JP 2005-272389 A

However, even if the techniques described in the above-mentioned patent documents are used, the cosmetics are excellent in storage stability, and the cosmetics are easy to extend to the skin. There was room for improvement in terms of improving the smoothness and moisture retention of the skin while suppressing the roughness and stickiness.
Therefore, the present invention is an oil-in-water emulsification that is excellent in storage stability and ease of extension to the skin, and can improve skin smoothness and moisture retention while suppressing skin squeak, oiliness and stickiness. It provides cosmetics.

According to the present invention,
The following components (A) to (E):
(A) Sodium acrylate / acryloyldimethyltaurine copolymer,
(B) one or more selected from the group consisting of hydroxyethyl cellulose and hydroxymethyl cellulose;
(C) one or more selected from the group consisting of titanium oxide and zinc oxide,
An oil-in-water emulsified cosmetic containing (D) an oil agent and (E) water,
Content of the said component (A) with respect to the said whole oil-in-water type emulsified cosmetics is 0.30-1.2 mass%,
Content of the said component (D) with respect to the said whole oil-in-water type emulsified cosmetics is 15-30 mass%,
Oil-in-water, wherein the mass ratio (component (A) / component (B)) of component (A) to component (B) in the oil-in-water emulsified cosmetic is greater than 1/1 and not greater than 5/1. A type emulsified cosmetic is provided.

  According to the present invention, the oil-in-water emulsification is excellent in storage stability and ease of extension to the skin, and can improve skin smoothness and moisture retention while suppressing skin squeak, oiliness and stickiness. Cosmetics can be obtained.

The oil-in-water (O / W) emulsified cosmetic in the present embodiment is a composition containing the following components (A) to (E).
(A) Sodium acrylate / acryloyldimethyltaurine copolymer (B) One or more selected from the group consisting of hydroxyethylcellulose and hydroxymethylcellulose (C) One or more selected from the group consisting of titanium oxide and zinc oxide (D) Oil agent (E) water Moreover, in this embodiment, content of the component (A) with respect to the whole oil-in-water type emulsion cosmetic is 0.30-1.2 mass%, and the component with respect to the whole oil-in-water type emulsion cosmetic ( The content ratio of D) is 15 to 30% by mass, and the mass ratio (component (A) / component (B)) of component (A) to component (B) in the oil-in-water emulsion cosmetic is 1/1. Greater than 5/1.

Hereinafter, each component will be described with specific examples. Each component can be used alone or in combination of two or more.
Moreover, in this specification, "-" represents the following from the above, if there is no notice.

(Ingredient (A))
Component (A) is a sodium acrylate / acryloyldimethyltaurine copolymer.
More specifically, the sodium acrylate / acryloyldimethyltaurine copolymer of component (A) is more specifically described in the International Cosmetic Ingredient Dictionary as “SODIUM ACRYLATE / ACRYLOYLDIMETHYL TAURATE COPOLYMER”, sodium acrylate and sodium acryloyldimethyltaurate. And a copolymer.
As a commercial product containing component (A), for example, a composition dispersed in oil together with an oil agent such as squalane and isohexadecane and a nonionic surfactant, SEPIGEL501, SEPIGEL305, SIMULGEL EG or SIMULGEL GL- What is provided as LNS (trademark) can be used. Among these, a sodium acrylate / acryloyldimethyltaurine copolymer is a composition from the viewpoint of improving the storage stability of an oil-in-water emulsified cosmetic and improving the ease of extension of the oil-in-water emulsified cosmetic. SIMULGEL EG (content of sodium acrylate / acryloyldimethyltaurine copolymer: 37.5% by mass) is preferable.

  The content of the component (A) in the oil-in-water emulsified cosmetic is from the viewpoint of improving the storage stability of the oil-in-water emulsified cosmetic and from the viewpoint of improving the ease of extension of the oil-in-water emulsified cosmetic, It is 0.30-1.2 mass% with respect to the whole oil-in-water emulsified cosmetic, Preferably it is 0.35-1.0 mass%, More preferably, it is 0.4-0.8 mass% is there.

(Ingredient (B))
Component (B) is one or more selected from the group consisting of hydroxyethyl cellulose and hydroxymethyl cellulose.

The molar average substitution degree of the component (B) is preferably 0.5 to 2 from the viewpoint of suppressing squeakiness and stickiness of the skin and improving the smoothness of the skin.
In addition, the weight average molecular weight of the component (B) is preferably 100,000 or more, more preferably 150,000 or more, more preferably 180,000 or more, from the viewpoint of suppressing skin creaking and stickiness and improving the smoothness of the skin. 000 or more is more preferable, 3,000,000 or less is preferable, 1,000,000 or less is more preferable, and 500,000 or less is more preferable.

  Here, the molar average substitution degree of the component (B) is determined by a nuclear magnetic resonance (NMR) method. The weight average molecular weight of the component (B) is determined by using a gel permeation chromatography (GPC) -multi-angle laser light scattering (MALLS) system using polyethylene oxide as a standard substance. Is measured.

  The content of the component (B) in the oil-in-water emulsified cosmetic is preferable with respect to the entire oil-in-water emulsified cosmetic from the viewpoint of suppressing skin creaking and stickiness, and improving the smoothness of the skin. Is 0.04 to 1% by mass, more preferably 0.08 to 0.8% by mass, still more preferably 0.15 to 0.6% by mass, and even more preferably 0.20 to 0%. 0.5% by mass.

  Moreover, in this embodiment, the mass ratio of the component (A) with respect to the component (B) in the oil-in-water emulsified cosmetic (component (A) / component (B)) has the effect of suppressing skin creaking. From the viewpoint of improving smoothness and moisture retention while increasing, it is greater than 1/1 and 5/1 or less, preferably 1.1 to 4.5, more preferably 1.2 to 3.5, Preferably it is 1.3-2.5.

(Ingredient (C))
Component (C) is at least one selected from the group consisting of titanium oxide and zinc oxide.

  Titanium oxide and zinc oxide may be titanium oxide and zinc oxide commonly used in cosmetics. It is preferable to use a material that is more excellent in dispersibility, for example, a surface that has been surface-treated by a known method, specifically, a hydrophobic treatment as required.

  Surface treatment methods include silicone treatment such as methylhydrogenpolysiloxane and methylpolysiloxane; fluorine treatment with perfluoroalkyl phosphate ester, perfluoroalcohol, etc .; amino acid treatment with N-acyl glutamic acid, etc .; other, lecithin treatment; metal Examples include soap treatment; fatty acid treatment; alkyl phosphate treatment. Of these, zinc oxide whose surface is treated with silicone is preferably used.

  The silicone used for the surface treatment is not limited. For example, methylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, methylcyclopolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, octadeca Methyltrisiloxane, tetradecamethylhexasiloxane, dimethylsiloxane methyl (polyoxyethylene) siloxane methyl (polyoxypropylene) siloxane copolymer, dimethylsiloxane methyl (polyoxyethylene) siloxane copolymer, dimethylsiloxane methyl (Polyoxypropylene) siloxane copolymer, dimethylsiloxane / methylcetyloxysiloxane copolymer, dimethylsiloxane / medium It can include various silicone oils such as pulse stearoyl carboxymethyl copolymer. Methyl hydrogen polysiloxane and methyl polysiloxane are preferable.

  Commercially available products may be used as the component (C) zinc oxide, and as a specific example, FINEX-50-LPTM (dimethicone treatment, manufactured by Sakai Chemical Co., Ltd.), MZ-300 (no surface treatment agent, Teika) MZ-504R3M (hydrogen dimethicone treatment, manufactured by Teica), MZY-303S (hydrogen dimethicone treatment, manufactured by Teica), MZ-306X (triethoxysilylethylpolydimethylsiloxyethylhexyl dimethicone treatment, manufactured by Teica), MZ -200 (no surface treatment agent, manufactured by Teica), MZY-203S (hydrogen dimethicone treatment, manufactured by Teica), MZ-150 (no surface treatment agent, manufactured by Teica), MZY-153S (hydrogen dimethicone treatment, Teica) Manufactured), FINEX-25 (no surface treatment agent, manufactured by Sakai Chemical Co., Ltd.), FINEX-2 LP (dimethicone treatment, Sakai made Gakusha), and the like. However, it is not limited to these examples.

  Moreover, as a titanium oxide of a component (C), you may use a commercial item, and if a specific example is shown, particulate titanium oxide MT-100TV (alumina isostearic acid process, the Teica company make), particulate titanium oxide MTY-110M3S ( Al, Si, silicone treatment, manufactured by Teika) and the like.

  In the present embodiment, the content of the component (C) in the oil-in-water emulsified cosmetic improves the UV protection effect of the oil-in-water emulsified cosmetic and suppresses the stickiness of the skin from the viewpoint of oil-in-water emulsification. Preferably it is 3-20 mass% with respect to the whole cosmetics, More preferably, it is 3.5-15 mass%, More preferably, it is 3.8-10 mass%, More preferably, it is 4-8 mass%. It is.

  When the component (C) is in the form of particles, the number average particle size is, for example, 1 nm or more, preferably 5 nm or more, more preferably 8 nm or more, and further preferably 10 nm or more. For example, it is 500 nm or less, preferably 300 nm or less, more preferably 100 nm or less, and further preferably 60 nm or less.

  Here, the number average particle diameter of the component (C) is determined by, for example, measuring the maximum short diameter of 300 particles in an image with a transmission electron microscope (TEM) under the condition of 50000 magnification. It is obtained by calculating an average value. Here, the maximum minor axis means the minor axis having the largest diameter among the minor axes orthogonal to the major axis. For example, for the MZ-504R3M, the number average particle size measured by such a method is about 30 nm, and for fine particle titanium oxide MT-100TV, the number average particle size measured by such a method is about 15 nm.

(Component (D))
Component (D) is an oil agent.
As the component (D), any of solid fat and liquid oil can be used.
Moreover, it is preferable to use a non-volatile oil agent at 25 degreeC as a component (D), and it is more preferable that a component (D) is comprised from a non-volatile oil agent at 25 degreeC.

  The content of the component (D) in the oil-in-water emulsified cosmetic of the present embodiment is 15 to 30% by mass from the viewpoint of suppressing skin creaking and improving skin smoothness and moisture retention. -29 mass% is more preferable, 18-27 mass% is further more preferable, and 20-25 mass% is still more preferable.

Moreover, it is more preferable that a component (D) contains non-volatile liquid oil (D1) at 25 degreeC, or non-volatile solid fat (D2) at 25 degreeC, and non-volatile liquid oil (D1) at 25 degreeC ) And a solid fat (D2) that is nonvolatile at 25 ° C., and the component (D) is a liquid oil (D1) that is nonvolatile at 25 ° C. and a solid fat that is nonvolatile at 25 ° C. Even more preferably, it is substantially composed of D2).
That is, in the oil-in-water emulsified cosmetic of the present embodiment, it is preferable to use a combination of a liquid oil and a solid oil at a specific 25 ° C. By taking such a combination, the oil-in-water emulsified cosmetic composition of this embodiment is excellent in suppression of stickiness and blemishes, moisturizing and sustainability of skin smoothness due to interaction with other components, and appearance. It is thought that the whiteness of the skin can be suppressed.
Hereinafter, the components (D1) and (D2) will be described more specifically.

Component (D1) is a non-volatile liquid oil at 25 ° C.
As the component (D1), among oil-soluble ultraviolet absorbers and other liquid oils, those that are non-volatile at 25 ° C. can be mentioned.

Among these, as the oil-soluble UV absorber, salicylic acid UV absorbers such as homomenthyl salicylate, octyl salicylate, triethanolamine salicylate;
Paraaminobenzoic acid ultraviolet absorbers such as paraaminobenzoic acid, ethyldihydroxypropylparaaminobenzoic acid, glycerylparaaminobenzoic acid, octyldimethylparaaminobenzoic acid, amyl paradimethylaminobenzoate, 2-ethylhexyl paradimethylaminobenzoate;
4- (2-β-glucopyranosyloxy) propoxy-2-hydroxybenzophenone, dihydroxydimethoxybenzophenone, sodium dihydroxydimethoxybenzophenone disulfonate, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5 Sulfuric acid, 2,2′-dihydroxy-4-methoxybenzophenone, 2,4-dihydroxybenzophenone, 2,2′4,4′-tetrahydroxybenzophenone, 2,2′-dihydroxy-4,4′-dimethoxybenzophenone, 2, -Benzophenone ultraviolet absorbers such as hydroxy-4-N-octoxybenzophenone;
2-Ethylhexyl paramethoxycinnamate (for example, ubinal MC80; manufactured by BASF Japan), diparamethoxycinnamate mono-2-ethylhexanoate glyceryl, 2,5-diisopropylmethylcinnamate, 2,4,6 -Tris [4- (2-ethylhexyloxycarbonyl) anilino] -1,3,5-triazine (for example, ubinal T150; manufactured by BASF Japan), methyl bis (trimethylsiloxy) silylisopentyl trimethoxycinnamate, Cinnamic acid-based UV absorbers such as paramethoxy cinnamate isopropyl diisopropyl cinnamate mixture, p-methoxyhydrocinnamic acid diethanolamine salt;
Benzoylmethane-based ultraviolet absorption such as 2-phenyl-benzimidazole-5-sulfate, 4-isopropyldibenzoylmethane, 4-tert-butyl-4′-methoxydibenzoylmethane (for example, Parasol 1789; manufactured by DSM Nutrition Japan) Agent;
Octocrylene (for example, parasol 340; manufactured by DSM Nutrition Japan), 2-methoxyhexyl dimethoxybenzylidene dioxoimidazolidine propionate (for example, soft shade DH; manufactured by Ajinomoto Co.), 1- (3,4-dimethoxyphenyl) -4, 4-dimethyl-1,3-pentanedione, sinoxate, methyl-O-aminobenzoate, 3- (4-methylbenzylidene) camphor, octyltriazone, diethylaminohydroxybenzoyl benzoic acid hexyl ester (eg, ubinal Aplus, ubinal APLUS GRANULAR Manufactured by BASF Japan), bisethylhexyloxyphenol methoxyphenyl triazine (for example, Tinosorb S; manufactured by BASF Japan), methylene bisben Zotriazolyltetramethylbutylphenol (for example, Tinosorb M; manufactured by BASF Japan Ltd.) can be mentioned, and one or more selected from these can be used.

  Of these, 2-methoxyhexyl paramethoxycinnamate (for example, Ubinal MC80; manufactured by BASF Japan Ltd.), 2, 4 from the viewpoint of suppressing stickiness, maintaining moisture retention and maintaining the smoothness of the skin, and improving the ultraviolet absorption effect. , 6-tris [4- (2-ethylhexyloxycarbonyl) anilino] -1,3,5-triazine (for example, ubinal T150; manufactured by BASF Japan), 4-tert-butyl-4′-methoxydibenzoyl Methane (for example, Parasol 1789; manufactured by DSM Nutrition Japan), Octocrylene (for example, Parasol 340; manufactured by DSM Nutrition Japan), dimethoxybenzylidenedioxoimidazolidinepropionate 2-ethylhexyl (for example, soft shade DH; Ajinomoto) ), Diethylaminohydroxybenzoyl benzoic acid hexyl ester (for example, ubinal Aplus; manufactured by BASF Japan), bisethylhexyloxyphenol methoxyphenyl triazine (for example, Tinosorb S; manufactured by BASF Japan), methylenebisbenzotriazolyltetramethyl One or more selected from butylphenol (for example, Tinosorb M; manufactured by BASF Japan) is preferable, and 2-methoxyhexyl paramethoxycinnamate (for example, ubinal MC80; manufactured by BASF Japan), hexyl diethylaminohydroxybenzoyl benzoate Esters (for example, ubinal Aplus, ubinal APLUS GRANULAR; manufactured by BASF Japan), bisethylhexyloxyphenol Butoxy phenyl triazine (e.g., Tinosorb S; manufactured by BASF Japan Ltd.) one or more preferably two or more selected from, more preferably to combine two or more of these.

  In the present embodiment, the content of the oil-soluble ultraviolet absorber is the entire oil-in-water emulsion cosmetic from the viewpoints of suppression of stickiness, suppression of oiliness, and improvement of the ultraviolet protection effect of the oil-in-water emulsion cosmetic. On the other hand, it is preferable to set it as 0.6-30 mass%, 2-25 mass% is more preferable, 5-18 mass% is further more preferable, and 8-16 mass% is still more preferable.

  Other liquid oils include hydrocarbon oil, synthetic ester oil, higher fatty acid, higher alcohol, silicone oil, triglycerin, trioctanoic acid glycerin, triisopalmitic acid glycerin, diisostearate polyglyceryl and the like at 25 ° C. Non-volatile liquid form is mentioned.

  Examples of the liquid hydrocarbon oil that is non-volatile at 25 ° C. include liquid paraffin, liquid isoparaffin, liquid ozokerite, squalane, pristane, squalene, and isohexadecane.

  Nonvolatile liquid synthetic ester oils at 25 ° C. include isononyl isononanoate, isotridecyl isononanoate, neopentyl glycol dicaprate, neopentyl glycol diethylhexanoate, ethylhexyl palmitate, glycerin tri-2-ethylhexylate, benzoic acid Alkyl, di (caprylic / capric) propandiol, propanediol diisostearate, glyceryl tri (capry / caprate), isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, lauric acid Hexyl, myristyl myristate, decyl oleate, hexyl decyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, Isocetyl sostearate, ethylene glycol di-2-ethylhexylate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, diisostearyl malate, glycerin di-2-heptylundecanoate, tri-2-ethylhexyl tris Methylolpropane, trimethylolpropane triisostearate, pentaerythritol tetra-2-ethylhexylate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glyceryl trimyristate, tri-2-heptyl Undecanoic acid glyceride, castor oil fatty acid methyl ester, oleyl oleate, acetoglyceride, 2-heptylundecyl palmitate, diisobu adipate Chill, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyl palmitate Examples include decyl, 2-hexyldecyl adipate, diisopropyl sebacate, and 2-ethylhexyl succinate.

  Examples of liquid higher fatty acids that are non-volatile at 25 ° C. include non-volatile liquid fatty acids having 12 to 22 carbon atoms at 25 ° C., and more specifically, oleic acid, isostearic acid, linoleic acid And linolenic acid.

  Examples of the liquid higher alcohol that is nonvolatile at 25 ° C. include a liquid alcohol that is nonvolatile at 25 ° C. having 12 to 22 carbon atoms, and more specifically, oleyl alcohol, 2-decyltetradecyl alcohol. Nol, lanolin alcohol, dodecanol, isostearyl alcohol, octyldodecanol.

Examples of non-volatile liquid silicone oils at 25 ° C. include chain polysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane, decamethylpolysiloxane, dodecamethylpolysiloxane, and tetramethyltetra Examples include cyclic polysiloxanes such as hydrogen polysiloxane.
In addition, the component (D1) may be of natural origin such as olive oil.

Further, among liquid oils that are non-volatile at 25 ° C., those having a viscosity of 300 mPas or less at 25 ° C. from the viewpoint of suppressing stickiness, maintaining moisture retention and smoothness of the skin, and improving elongation. Preferably, it is 150 mPas or less, more preferably 100 mPas or less. For example, ester oil isononyl isononanoate, isotridecyl isononanoate, neopentyl glycol dicaprate, neopentyl glycol diethylhexanoate, ethylhexyl palmitate, tri-2- Preference is given to glyceryl ethylhexylate, alkyl benzoate, liquid paraffin as hydrocarbon oil, liquid isoparaffin, or low viscosity dimethylpolysiloxane.
In addition, the viscosity of a component (D1) is rotor No. using B type viscometer TVB-10 (made by Toki Sangyo Co., Ltd.). It is measured under the conditions of 2, 25 ° C., 30 rpm and 1 minute.

  In the present embodiment, the content of the component (D1) is 10 with respect to the entire oil-in-water emulsified cosmetic from the viewpoint of suppressing stickiness, maintaining moisture retention and smoothness of the skin, and improving the elongation. It is preferable to set it as 0.5-29.4 mass%, 15-28 mass% is more preferable, 17-26 mass% is further more preferable, 19-23 mass% is still more preferable.

Next, component (D2) is a non-volatile solid fat at 25 ° C.
Specific examples of component (D2) include alcohols having 12 to 22 carbon atoms, fatty acids having 12 to 22 carbon atoms, monoalkyl glyceryl ethers having 14 to 22 carbon atoms, waxes, ester oils, sterols, hydrocarbon oils, and ceramides. Among the silicone oils that are solid at 25 ° C., oils that are non-volatile and solid at 25 ° C. can be mentioned.

  Examples of the solid alcohol having 12 to 22 carbon atoms that is nonvolatile at 25 ° C. include myristyl alcohol, cetanol, stearyl alcohol, and behenyl alcohol. Among these, those having a linear alkyl group are preferred, more preferably saturated alcohols, and still more preferably one or more selected from alcohols having 16 to 18 carbon atoms, selected from cetanol or stearyl alcohol. Even more preferred are one or more.

  Examples of the solid fatty acid having 12 to 22 carbon atoms that is nonvolatile at 25 ° C. include lauric acid, myristic acid, palmitic acid, stearic acid, and behenic acid. Among these, those having a linear alkyl group are preferred, more preferably saturated fatty acids, still more preferably one or more selected from fatty acids having 14 to 22 carbon atoms, and even more preferably carbon numbers. It is 1 type, or 2 or more types chosen from 16-22 fatty acids.

  Examples of the solid C14-22 monoalkyl glyceryl ether that is nonvolatile at 25 ° C. include monomyristyl glyceryl ether, monocetyl glyceryl ether, monostearyl glyceryl ether, monobehenyl glyceryl ether, and the like.

  Examples of solid waxes that are nonvolatile at 25 ° C. include beeswax, candelilla wax, carnauba wax, bayberry wax, jojoballow, lanolin, shellac wax, whale wax, and mole.

  Examples of non-volatile solid ester oils at 25 ° C. include mono-fatty acid glycerin ester having 14 to 22 carbon atoms, mono-fatty acid sorbitan ester having 14 to 22 carbon atoms, myristyl myristate, cholesteryl isostearate, behenyl behenyl, and trimyristin Examples include acid glycerin and dextrin fatty acid ester.

  Among the non-volatile solid ester oils at 25 ° C., the monofatty acid glycerin ester having 14 to 22 carbon atoms is glycerin monomyristic acid ester, glycerin monopalmitic acid ester, glycerin monostearic acid ester, glycerin monobehenic acid ester. Glycerol monooleate, glycerol monoisostearate and the like. Of these, one or more selected from glycerol monobehenate, glycerol monostearate, or glycerol monopalmitate are preferable, and glycerol monostearate is more preferable.

  Among the solid ester oils that are non-volatile at 25 ° C., examples of monofatty acid sorbitan esters having 14 to 22 carbon atoms include sorbitan monomyristic acid, sorbitan monopalmitate, sorbitan monostearate, sorbitan monobehenate, and the like.

  Among the solid ester oils that are non-volatile at 25 ° C., dextrin fatty acid esters include dextrin palmitate, dextrin stearate, dextrin behenate, etc., and suppress stickiness, moisturize, and maintain the smoothness of the skin. From the viewpoint of improving the elongation, at least one selected from dextrin palmitate and dextrin stearate is preferable, and dextrin palmitate is more preferable.

  Examples of solid sterols that are nonvolatile at 25 ° C. include cholesterol and phytosterols.

  Examples of non-volatile solid hydrocarbon oils at 25 ° C. include petrolatum, ceresin, ozokerite, microcrystalline wax, and candelilla wax.

  As the solid ceramides that are non-volatile at 25 ° C., one or more selected from natural ceramides and pseudo-ceramides can be used. Specifically, JP 2013-53146 A The described ceramides can be used.

  Specific examples of natural ceramides include ceramide types 1 to 7 in which sphingosine, dihydrosphingosine, phytosphingosine or sphingadienin is amidated (for example, J. Lipid Res., 24: 759 (1983), FIG. And porcine and human ceramides described in FIG. 4 of J. Lipid. Res., 35: 2069 (1994)).

Furthermore, these N-alkyl bodies (for example, N-methyl body) are also included.
These ceramides may be either natural (D (−)) optically active or non-natural (L (+)) optically active, or a mixture of natural and nonnatural. May be used. The relative configuration of the above compound may be a natural configuration, a non-natural configuration other than that, or a mixture thereof. Among these, compounds of CERAMIDE1, CERAMIDE2, CERAMIDE3, CERAMIDE5, CERAMIDE6II (above, INCI, 8th Edition) and those represented by the following formula are preferable.

  These may be any of natural extracts and synthetic products, and commercially available products can be used. Examples of such commercially available ceramides include Ceramide I, Ceramide III, Ceramide IIIA, Ceramide IIIB, Ceramide IIIC, Ceramide VI (above, manufactured by Cosmo Farm), Ceramide TIC-001 (manufactured by Takasago Fragrance Co., Ltd.), CERAMIDE II (manufactured by Quest International), DS-Ceramide VI, DS-CLA-Phytoceramide, Phytoceramide, DS-ceramide Y3S (manufactured by DOOSAN), and CERAMIDE2 (manufactured by Sederma).

Moreover, what is shown to following General formula (5) is mentioned as pseudo-type ceramide.

(In the general formula (5), R ²⁵ represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group or hydrogen atom having 10 to 22 carbon atoms which may be substituted by a hydroxyl group; 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 having 5 to 22 carbon atoms which may be substituted with a hydroxyl group or an amino group. An linking end of the hydrocarbon 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; R ²⁷ represents a hydrogen atom, or an alkyl group having 1 to 30 carbon atoms which may be substituted by a hydroxyl group, a hydroxyalkoxy group, an alkoxy group or an acetoxy group.
Specific examples of the compound represented by the general formula (5) include those represented by the following formula.

  Examples of non-volatile solid silicone oils at 25 ° C. include dimethylpolysiloxane, cyclic dimethylpolysiloxane, methylphenylpolysiloxane, amino-modified silicone, carboxy-modified silicone, alcohol-modified silicone, and alkyl-modified silicone such as stearyl dimethicone, polyether Among silicone oils such as modified silicone and fluorine-modified silicone, those which are solid at 25 ° C. can be mentioned.

  Among these, as a component (D2), it is a solid fat non-volatile at 25 degreeC, Comprising: 1 type selected from the group which consists of C12-C22 alcohol and C14-C22 mono-fatty acid glycerol ester, or Two or more types are preferably used, and one or more types selected from the group consisting of cetyl alcohol, stearyl alcohol, glycerol monopalmitate and glycerol monostearate are more preferably used. Further, from the viewpoint of improving smoothness and improving the storage stability of the oil-in-water emulsified cosmetic, as a non-volatile solid fat at 25 ° C., an alcohol having 12 to 22 carbon atoms and a carbon having 14 to 22 carbon atoms is used. Mono fatty acid glycerin ester is preferably used in combination, and one or two selected from the group consisting of cetyl alcohol and stearyl alcohol and one or more selected from the group consisting of monopalmitic acid ester and glycerin monostearate It is more preferable to use a combination of two or more.

  Further, from the viewpoint of suppressing stickiness, maintaining moisture retention and smoothness of the skin, improving the elongation and reducing oiliness, a specific example of the component (D2) has a melting point of 30 to 100 ° C. The thing of 40-90 degreeC is more preferable, and the thing of 40-80 degreeC is further more preferable. As solid oil having a melting point of 40 to 80 ° C., petroleum jelly (40 to 75 ° C.), bisalkyl (C30-45) dimethicone (60 to 70 ° C.), dextrin palmitate (70 to 85 ° C.), white beeswax (62 -67 ° C), stearyl alcohol (54.5-59.5 ° C), behenyl alcohol (67.0-73.0 ° C), candelilla wax (68-72 ° C), and the like.

  In the present embodiment, the content of the component (D2) in the oil-in-water emulsified cosmetic is a viewpoint that improves the stability of the oil-in-water emulsified cosmetic, and a viewpoint that improves the suppression of stickiness during application. Therefore, it is preferably 0.6 to 4.5% by mass, more preferably 1 to 4% by mass.

  In addition, the content of the component (D2) in the component (D) in the oil-in-water emulsified cosmetic is improved in the storage stability of the oil-in-water emulsified cosmetic and the ease of extension to the skin, and From the viewpoint of the balance of the effect of suppressing skin squeakiness, oiliness and stickiness, it is preferably 4 to 15% by mass, more preferably 5 to 13% by mass, and further preferably 6 to 10% by mass.

  When the component (D2) that is solid at 25 ° C. is used as the component (D), it is preferably used after being dissolved in liquid oil at 25 ° C. from the viewpoint of improving the stability of the oil-in-water emulsion cosmetic. Alternatively, it may be used after being dissolved in the liquid component (D1) at 25 ° C.

  Examples of the component (D) other than the components (D1) and (D2) include volatile silicone oil such as volatile dimethylcyclopolysiloxane.

(Ingredient (E))
Ingredient (E) is water. In the present embodiment, the content of the component (E) in the oil-in-water emulsified cosmetic can be, for example, the remainder excluding components other than the component (E) in the oil-in-water emulsified cosmetic.
Further, the content of the component (E) in the oil-in-water emulsion cosmetic is preferably 53, for example, with respect to the whole oil-in-water emulsion cosmetic from the viewpoint of improving the storage stability of the oil-in-water emulsion cosmetic. It is -80 mass%, More preferably, it is 55-70 mass%.

The oil-in-water emulsified cosmetic in the present embodiment can be produced according to a usual method.
Specifically, the oil-in-water emulsified cosmetic in the present embodiment is obtained by the following procedure. That is, at a predetermined temperature of about 25 ° C., components (A), (B) and component (E) are mixed to prepare an aqueous phase. On the other hand, components (C) and (D) are heated as necessary to dissolve component (D) and mixed to prepare a uniform oil phase. By mixing the obtained aqueous phase and oil phase at a predetermined temperature of about 25 to 100 ° C. to make them uniform, cooling to about room temperature (25 ° C.), adding fragrance and the like as necessary, and mixing. An oil-in-water emulsified cosmetic is obtained.

  In this embodiment, by using the specific components (A) to (E) in combination at a specific ratio, the storage stability and the easiness to extend to the skin are excellent, and the squeaky, oily and sticky skin. It is possible to obtain an oil-in-water emulsified cosmetic that can improve the smoothness and moisture retention of the skin while suppressing the above. More specifically, the moisturizing feeling and the smoothness of the skin can be further improved while increasing the ratio of the oil agent of component (D) in the oil-in-water emulsified cosmetic. In addition, according to the present embodiment, for example, it is possible to obtain an oil-in-water emulsified cosmetic having an excellent ultraviolet protection effect.

  In addition, as the oil-in-water emulsified cosmetic obtained by the present embodiment, makeup oil-in-water emulsified cosmetics such as makeup foundations, emulsion foundations, and eye shadows; sunscreen oil-in-water emulsified cosmetics such as sunscreen creams, etc. Is mentioned. Moreover, as a dosage form, it can be set as emulsions, creams, etc., for example.

  The oil-in-water emulsified cosmetic of the present embodiment can be used by applying it to the skin, particularly the skin excluding the hair, preferably the face, body, limbs and the like.

  In this embodiment, the oil-in-water emulsified cosmetic includes components other than those described above, for example, water-soluble polymer thickeners; surfactants; fragrances; polyhydric alcohols such as dipropylene glycol or others. Moisturizers; cosmetic ingredients; medicinal ingredients; oil gelling agents; bactericides; pH adjusters; antioxidants; antiseptics such as phenoxyethanol; alcohols having 1 to 5 carbon atoms; chelating agents such as disodium edetate; Among the components used in other normal cosmetics, components other than those described above as components (A) to (E) can be contained. In addition, each of these agents is not limited to the use as each agent, and other uses, for example, a surfactant can be used as a bactericide according to the purpose.

  Among these, as water-soluble polymers, carrageenan, dextrin, polyvinyl alcohol, polyacrylic acid, polymethacrylic acid, carboxyvinyl polymer, (acrylic acid / alkyl acrylate (C10-30)) copolymer, xanthan gum, carboxymethyl chitin, chitosan Etc.

Especially, it is preferable that an oil-in-water type emulsion cosmetic contains a xanthan gum.
By using a combination of the components (A), (B) and xanthan gum, the storage stability of the oil-in-water emulsified cosmetic and the ease of spreading to the skin, as well as the suppression of creaking, oily and stickiness of the skin, The balance of the effects of improving the smoothness and moisture retention of the skin can be further stably improved.
The content of xanthan gum in the oil-in-water emulsified cosmetic is preferably 0.01 to 1% by mass, more preferably 0.02 to 0.8% by mass, and still more preferably 0.05 to 0.5% by mass. %.

In addition, as the surfactant, known anionic surfactants, cationic surfactants, amphoteric surfactants and nonionic surfactants can be used. From the viewpoint of improving stickiness suppression, it is preferable to contain a nonionic surfactant.
Examples of nonionic surfactants include ethylene glycol fatty acid esters such as ethylene glycol monostearate;
Polyethylene glycol fatty acid esters such as polyethylene glycol (2) monostearate;
Polyalkylene glycol alkyl ethers such as polyethylene glycol (5) decylpentadecyl ether;
Polyethylene glycol hydrogenated castor oil such as polyethylene glycol (5) hydrogenated castor oil monoisolaurate;
Propylene glycol fatty acid ester;
Monoglycerol monofatty acid esters such as glycerol monoisostearate;
Monoglycerol difatty acid esters such as glycerol distearate and glycerol dilaurate;
Glycerin alkyl ethers such as glycerin monoisostearyl ether;
Sorbitan fatty acid esters such as sorbitan monostearate (sorbitan monostearate);
Polyoxyethylene ethers of sorbitan fatty acid esters such as polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan oleate (polysorbate 80);
Fatty acid alkanolamides;
Examples include fatty acid dialkanolamides such as lauric acid diethanolamide, monofatty acid glyceryl esters such as glyceryl stearyl, and monofatty acid glyceryl ethers such as stearyl glyceryl ether.

  The content of the surfactant in the oil-in-water emulsified cosmetic is improved with respect to the overall oil-in-water emulsified cosmetic from the viewpoint of improving the stability of emulsification of the oil-in-water emulsified cosmetic and improving the suppression of stickiness. 0.1-4 mass% is preferable and 0.5-3 mass% is more preferable.

  As mentioned above, although embodiment of this invention was described, these are illustrations of this invention and various structures other than the above are also employable.

  In the following examples, each raw material is blended so that the content of each component in the resulting composition is as described in each table according to the amount of the component contained in the raw material, and the oil-in-water emulsion makeup The composition of the material was obtained. For example, in Tables 1 to 3, for sodium acrylate / acryloyldimethyltaurate sodium copolymer, isohexadecane and polysorbate 80, the content of each of these components in the oil-in-water emulsion cosmetic is described in each table. SIMULGEL EG was blended so that it would be (* 1 described later).

(Examples 1-14 and Comparative Examples 1-4)
An oil-in-water emulsified cosmetic composition (sunscreen cosmetic composition) having the composition shown in Tables 1 and 2 was produced by the method described below, and by the method described later, good elongation, lack of oiliness, lack of squeaking, and stickiness The smoothness of the skin, the smoothness of the skin, the high moisture retention, and the storage stability of the oil-in-water emulsified cosmetic were evaluated. The results are also shown in Table 1 and Table 2.

(Method for producing oil-in-water emulsified cosmetic)
Under a temperature of 25 ° C., components (A), (B) and all optional components were added to component (E) and mixed to prepare an aqueous phase. On the other hand, at a temperature of 90 ° C., component (D2) is added to component (D1) to dissolve component (D2), and (C) is further added, mixed and dispersed with a disper, and the oil phase is dispersed. Prepared. Thereafter, the oil phase was added and emulsified while heating and stirring the obtained aqueous phase at 30 to 40 ° C. Then, the mixture was stirred and cooled to room temperature (25 ° C.) to obtain oil-in-water emulsion cosmetics described in each table. When volatile oil is used, it is added to (D1) in the same manner as component (D2), but the temperature at that time and the mixing temperature of the oil and water phases are adjusted to 60 ° C., otherwise , Manufactured according to the above.

(Evaluation methods)
(sensory evaluation)
Two specialist panelists applied 0.02 mL of an oil-in-water emulsified cosmetic with a diameter of 3 cm on the inner side of the forearm.
After application of the oil-in-water emulsified cosmetic, after 30 minutes at 25 ° C. and 57% RH, sensory evaluation was performed by touching the coated part with a finger.
For each item of good stretch, no oiliness, no creaking, no stickiness, smooth skin, and high moisturizing properties, the criteria are divided into four levels, and the best effect is the best 4 was evaluated, and the worst was 1, and two or more points were evaluated as being acceptable. The average value of the two panelists was calculated and rounded to the first decimal place.

(Cosmetics stability)
In a 100 mL glass bottle, 50 mL of an oil-in-water emulsified cosmetic is placed, sealed, and stored at 50 ° C. for 1 month. The presence or absence of separation of the oil phase in the cosmetic is visually checked by one expert panelist. Confirmed and shown by the following criteria.
The standard was divided into four stages, the one with no separation was the best 4 and the one with the complete separation of oil was the worst 1, and two or more points were judged as passing and evaluated.

Details of the components used in Tables 1 and 2 are shown below.
* 1 Sodium acrylate / acryloyl dimethyl taurate copolymer: SIMULGEL EG, active ingredient manufactured by SEPPIC * 2 Hydroxyethyl cellulose: HEC Daicel SE400, manufactured by Daicel Finechem * 3 Silicone-coated zinc oxide (hydrogen dimethicone-treated zinc oxide) : MICRO ZINC OXIDE MZ-504R3M, manufactured by Teika Co., Ltd. * 4 2-methoxyhexyl paramethoxycinnamate (viscosity: 78 mPa · s): ubinal MC80, manufactured by BASF Japan * 5 dicaprate neopentyl glycol (viscosity: 24 mPa · s) : Estemol N-01, Nisshin Oillio Group * 6 Dimethylpolysiloxane (viscosity: 13 mPa · s): Silicone KF-96A-6CS, Shin-Etsu Chemical * 7 Diiso Polyglyceryl stearate (viscosity: 913 mPa · s): Cosmol 42V, manufactured by Nisshin Oillio Group * 8 Dimethylcyclopolysiloxane (volatile): Silicone TSF405A, manufactured by Momentive Performance Materials Japan * 9 Vaseline (melting point: 40-75 ° C): Super white protopet, manufactured by SONNEBORN * 10 Stearyl alcohol (melting point: 54.5-59.5 ° C): Stearyl alcohol, manufactured by Higher Alcohol Industry Co., Ltd. * 11 Bisalkyl (C30-45) dimethicone (melting point) : 60-70 ° C): Silicone SF1642K, manufactured by Momentive Performance Materials Japan * 12 dextrin palmitate (melting point: 70-85 ° C): Leopard KL2, manufactured by Chiba Flour Mills * 13 Stearyl Dimethicone (fusion) : 32 ° C): DOW CORNING 2503 COSMETIC WAX, manufactured by Dow Chemical Company * 14 Xanthan gum: Keldent, manufactured by DSP Gokyo Food & Chemical * 15 Monostearic acid polyoxyethylene sorbitan: Leodol TW-S120V, manufactured by Kao Corporation * 16 Sorbitan monostearate: Rheodor SP-S10V, manufactured by Kao * 17 Disodium edetate: Clewat N, manufactured by Nagase ChemteX * 18 Dipropylene glycol: DPG-RF, manufactured by ADEKA * 19 Ethanol: 95 degree synthetic alcohol Made by Nippon Synthetic Alcohol

  From Table 1 and Table 2, since the oil-in-water emulsified cosmetics described in each example are used in combination with components (A) to (E) at a specific ratio, they have good elongation and oiliness. The results of the evaluation of the smoothness, smoothness, non-stickiness, smoothness of the skin, high moisturizing properties and the storage stability of the oil-in-water emulsified cosmetics are all 2 points or more. Excellent balance. From this, it can be seen that the oil-in-water emulsified cosmetics described in each Example are cosmetics that are also useful as sunscreen cosmetics.

(Prescription Examples 1 to 4)
Oil-in-water emulsified cosmetics with the formulations shown in Table 3 were produced. The oil-in-water emulsified cosmetic of this example was also produced according to the method for producing an oil-in-water emulsified cosmetic in the above-described Examples.

Details of the components used in Table 3 are shown below.
* 20 Squalane (viscosity: 37 mPa · s): Squalane, manufactured by Kishimoto Special Liver Oil Industry Co., Ltd. * 21 Alkyl benzoate (C12-15) (viscosity: 21 mPa · s): Finsolv TN, manufactured by Innospec Active Chemicals LLC * 22 Liquid isoparaffin (Viscosity: 22 mPa · s): Pearl Ream EX, manufactured by NOF Corporation * 23 Olive oil (viscosity: 77 mPa · s): Cropure OL, manufactured by Croda Japan * 24 Liquid paraffin (viscosity: 26 mPa · s): High Coal K-23 * 25 Kaneshi beeswax (melting point: 62-67 ° C): Golden brand, manufactured by Miki Chemical Industry * 26 Phenoxyethanol: Hisolv EPH, manufactured by Toho Chemical Industry Co., Ltd.

  From Table 3, in the oil-in-water emulsified cosmetics described in each formulation example, good elongation, no oiliness, no squeaking, no stickiness, smooth skin, high moisturizing properties and oil-in-water The evaluation results of the good storage stability of the type emulsified cosmetics were all good. From this, it can be seen that the oil-in-water emulsified cosmetic described in each formulation example is a cosmetic useful as a sunscreen cosmetic.

Claims (3)

The following components (A) to (E):
(A) Sodium acrylate / acryloyldimethyltaurine copolymer,
(B) one or more selected from the group consisting of hydroxyethyl cellulose and hydroxymethyl cellulose;
(C) one or more selected from the group consisting of titanium oxide and zinc oxide,
An oil-in-water emulsified cosmetic containing (D) an oil agent and (E) water,
Content of the said component (A) with respect to the said whole oil-in-water type emulsified cosmetics is 0.30-1.2 mass%,
Content of the said component (D) with respect to the said whole oil-in-water type emulsified cosmetics is 15-30 mass%,
The said component (D) contains non-volatile solid fat (D2) at 25 degreeC, and content of the said component (D2) in the said component (D) in the said oil-in-water type emulsified cosmetics is 4- 15% by weight,
The mass ratio of the component (A) to said component in the oil-in-water type emulsified cosmetic (B) (component (A) / component (B)) is state, and are 1.2 to 3.5,
An oil-in-water emulsified cosmetic that does not contain a crosslinked (meth) acrylic ester resin powder .   The oil-in-water emulsified cosmetic according to claim 1, wherein the component (D) comprises a liquid oil (D1) that is non-volatile at 25 ° C.   The oil-in-water emulsified cosmetic according to claim 1 or 2, further comprising xanthan gum.