JP5770490B2 - Oil-in-water emulsified cosmetic - Google Patents

Description

The present invention relates to an oil-in-water emulsified cosmetic containing a fine particle metal oxide dispersion composition in which a fine metal oxide is dispersed in a non-silicone oil, and more specifically, excellent in stability over time,
The present invention relates to an oil-in-water emulsified cosmetic having no stickiness and good spreadability.

Organic UV absorbers and inorganic UV scattering agents are blended in cosmetics having UV protection effects. As the inorganic ultraviolet scattering agent, metal oxides such as titanium oxide and zinc oxide are used, but the refractive index is high, and the skin becomes white after application, which is not preferable as a cosmetic. In order to improve the whiteness after coating, a technique for improving visible light transmittance by making a metal oxide into a spindle shape has been reported (for example, see Patent Document 1). Furthermore, in order to improve the ultraviolet protective effect and visible light transmittance of the fine particle metal oxide, it is necessary to uniformly disperse the fine particle metal oxide. Therefore, a specific organopolysiloxane copolymer is used as a dispersant. There are technologies to use (see, for example, Patent Document 2) and technologies using polyglycerin-modified silicone (
For example, refer to Patent Document 3), and volatile silicone oil such as decamethylcyclopentasiloxane is used as a dispersion medium in order to improve dispersibility and usability. Studies using oils other than volatile silicone oils such as decamethylcyclopentasiloxane as the dispersion medium include studies using ricinoleic acid and hydroxystearic acid as the dispersant and paraffin oil and triglyceride esters as the dispersion medium (for example, patent documents) 4) and polyhydroxystearic acid as a dispersant, and ester oil or triglyceride ester as a dispersion medium (for example, see Patent Document 5).

A number of techniques for dispersing these metal oxides in aqueous systems have been studied. For example, metal oxides using organosilicon resins and hydrophilic nonionic surfactants, lipophilic nonionic silicone surfactants. Cosmetics with improved dispersibility and stability over time (see Patent Document 6)
And oil-in-water cosmetics that are stable and have excellent usability by using a basic compound and a metal oxide powder coated with a polymer containing a monomer in which a fatty acid is added to acrylic acid or acrylamide as a structural monomer ( (See Patent Document 7).
Furthermore, studies using cationic surfactants (see Patent Document 8) have been made on studies using an emulsifier for stably dispersing metal oxides in oil-in-water cosmetics.

JP-A-9-175721 JP-A-11-263708 JP 2004-169015 A JP-A-6-39272 Special table 2009-508920 JP 2003-171230 A JP 2008-150299 A JP 2007-176867 A

However, as in Patent Document 1, when the metal oxide is made into a spindle shape in order to improve transparency, the surface area of the powder increases and it becomes difficult to disperse into the primary particles. When the silicone-based dispersant described in Patent Documents 2 and 3 blended for improving dispersibility is blended in an emulsified cosmetic,
Orientation at the oil-water interface may reduce the dispersibility of the particulate metal oxide. Further, the silicone-based dispersants used in Patent Documents 2 and 3 are designed to have a large molecular weight in order to stabilize the dispersion, and have problems in usability such as stickiness and poor spread. When ricinoleic acid or hydroxystearic acid is used as a non-silicone dispersant as in Patent Document 4, or when polyhydroxystearic acid is used as a dispersant as in Patent Document 5, a large amount of dispersant is used. It was necessary to blend, and it became sticky usability, spread poorly, and stability over time was not sufficient.

In addition, as in Patent Document 6, a silicone-treated powder is excellent in dispersibility if it is a silicone-based oil agent, but is poorly dispersed if a non-silicone-based solvent is used. Patent Document 7
As described above, the treated powder in which it is essential to use a basic compound in the aqueous phase is easily affected by pH, temperature change, electrolyte, and the like, and there is a concern about stability. When a cationic surfactant is blended as in Patent Document 8, there is a concern about skin irritation.
As described above, an oil-in-water emulsified cosmetic that has excellent dispersibility and stability over time, has no stickiness, and has good usability of spreading is not sufficient.

Under such circumstances, the present inventors have conducted extensive studies to solve the above-mentioned problems, and as a result, fine metal oxides containing a fine particle metal oxide, polyhydroxystearic acid and a non-silicone oil that have been surface-treated with alkyl titanate. A dispersion composition and an alkylmethyl taurate salt; and
The inventors have found that the above problems can be solved by preparing an oil-in-water emulsion cosmetic containing a surfactant selected from phospholipids and an oil component, and have completed the present invention.

That is, the present invention includes the following components (A) to (C);
(A) The following components (a1) to (a3)
(A1) Fine particle metal oxide surface-treated with alkyl titanate (a2) Polyhydroxystearic acid (a3) Non-silicone oil agent, (B) Alkylmethyltaurine salt And / or a surfactant (C) oily component selected from phospholipids is provided. An oil-in-water emulsified cosmetic is provided.

The oil-in-water emulsified cosmetic according to claim 1, wherein the surface treatment amount of the component (a1) with the alkyl titanate is surface treatment agent / particulate metal oxide = 0.02 to 0.25 in mass ratio. It is.

The oil-in-water emulsified cosmetic is characterized in that the particulate metal oxide of component (a1) is further surface-treated with a (dimethicone / methicone) copolymer.

The content of the component (a1) is 30 to 70% by mass in the fine particle metal oxide dispersion composition, and provides the oil-in-water emulsified cosmetic.

Content ratio (a2) of component (a1) and component (a2) in the fine particle metal oxide dispersion composition
/ (A1) is 0.01 to 0.5. The oil-in-water emulsified cosmetic is provided.

The non-silicone oil agent of component (a3) is a hydrocarbon oil or an ester oil. The oil-in-water emulsified cosmetic is provided.

Provided is the oil-in-water emulsion cosmetic, wherein the non-silicone oil component (a3) is a hydrocarbon oil having a viscosity at 40 ° C. of 16 mm ² / s or less or an ester oil having 27 or less carbon atoms. Is.

The content of the component (B) is 0.1 to 5% by mass, and the oil-in-water emulsified cosmetic is provided.

The oil-in-water emulsified cosmetic of the present invention is excellent in stability over time, has no stickiness, and has good usability of spreading.

  Hereinafter, the present invention will be described in detail.

Examples of the particulate metal oxide constituting the component (a1) used in the present invention include zinc oxide, titanium oxide, cerium oxide, zirconium oxide, iron oxide, and the like, and these may be used alone or in combination of two or more. it can. The particle size, shape, etc. of these metal oxides are not particularly limited, but preferably a water-in-oil having excellent stability over time by using a metal oxide having an average particle size of 1 to 100 nm with a high UV protection effect. A type emulsified cosmetic can be obtained. Here, the average particle diameter is obtained by measurement using an image analyzer (Luzex IIIU, manufactured by Nicoles).

Examples of the alkyl titanate constituting the component (a1) used in the present invention include long-chain carboxylic acid type, pyrophosphoric acid type, phosphorous acid type, amino acid type alkyl titanate and the like. More preferred are alkyl titanates having an alkyl group having 8 to 24 carbon atoms, and examples thereof include compounds represented by the following general formula (1).

(P is a positive integer, p = 8-24)

Specifically, the alkyl titanate is, as a long chain carboxylic acid type alkyl titanate, isopropyl triisostearoyl titanate, isopropyl trioctanoyl titanate, isopropyl dimethacrylisostearoyl titanate, isopropyl isostearoyl diacryl titanate, diisostearoyl ethylene. Titanate, etc.
Pyrophosphate type alkyl titanates include tetraisopropyl bis (dioctyl phosphite) titanate, tetraoctyl bis (ditridecyl phosphite) titanate, tetra (2,2-diallyloxymethyl-1-butyl) bis (ditridecyl phosphite) titanate As phosphite-type alkyl titanates, isopropyl tri (dioctyl pyrophosphate) titanate, bis (dioctyl pyrophosphate) oxyacetate titanate, bis (dioctyl pyrophosphate) ethylene titanate, etc. are mentioned, and amino acid type alkyl titanate , Isopropyltri (N-amidoethyl / aminoethyl) titanate and the like, and one or more of them can be used.

Among these organic titanates, it is preferable to select isopropyl triisostearoyl titanate represented by p = 17 in the general formula (1) because the spread is good.

In the present invention, the method of coating the surface of the fine particle metal oxide with an alkyl titanate surface treatment agent is not particularly limited, and a generally known treatment method is used. Specifically, a method of directly mixing an alkyl titanate and a particulate metal oxide, a dry coating method of directly mixing with a particulate metal oxide and heating to coat, ethanol, isopropyl alcohol, n-hexane, methylene chloride, benzene, Dissolve or disperse alkyl titanate in a solvent such as toluene, add a particulate metal oxide to this solution or dispersion, remove the solvent by drying, etc. after mixing, heat,
Examples thereof include a wet coating method for pulverization, a gas phase coating method in which an alkyl titanate dissolved or dispersed in a solvent is spray-coated on a powder in a fluidized bed, a mechanochemical method, and the like.

The component (a2) polyhydroxystearic acid used in the present invention is used to disperse the component (a1). The hydroxyl group of hydroxystearic acid is preferably at position 12, and the degree of polymerization of hydroxystearic acid is 3-12. The degree of polymerization is more preferably 4-8.
As a commercially available product, ALARACEL P-100 (manufactured by Unikema) can be mentioned.

The non-silicone oil agent of component (a3) used in the present invention is a medium in which component (a1) is dispersed and is not particularly limited as long as it is an oil agent having no polysiloxane skeleton, such as animal oil, vegetable oil, and synthetic oil. Regardless of the origin and properties of solid oil, semi-solid oil, liquid oil, volatile oil, etc., liquid oil that is liquid at normal temperature (15 ° C. to 25 ° C.) is preferred from the viewpoint of dispersibility of component (a1). .
For example, hydrocarbons, fats and oils, hardened oils, ester oils, fluorine-based oil agents, lanolin derivatives and the like can be blended, and more specifically, liquid paraffin, light liquid isoparaffin, squalane, vegetable squalane, Hydrocarbons such as petroleum jelly, polyisobutylene and polybutene, oils and fats such as owl, olive oil, castor oil, mink oil, macadamian nut oil, camelia oil, rose pip oil, avocado oil, jojoba oil, cetyl 2-ethylhexanoate , Isononyl isononanoate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, isotridecyl isononanoate, glyceryl tri-2-ethylhexanoate, propylene glycol dicaprate, neopentyl glycol dicaprate, polyglyceryl diisostearate Diglyceryl triisostearate, glyceryl tribethenate, hexa (hydroxystearic acid / stearic acid / rosin acid) dipentaerythrityl, diisostearyl malate, neopentyl glycol dioctanoate, cholesteryl isostearate, cholesteryl hydroxystearate, cholesteryl stearate, lanolin Esters such as fatty acid cholesteryl, oleic fatty acid phytosteryl, N-lauroyl-L-glutamate di (cholesteryl / behenyl / octyldodecyl), N-lauroyl-L-glutamate di (phytosteryl / 2-octyldodecyl), p-aminobenzoic acid Ethylhexyldimethyl, ethylhexyl salicylate, ethylhexyl methoxycinnamate, octocrylene, dineopentyl-4'-methoxybe Examples include oil-soluble ultraviolet absorbers such as zarmalonate, fluorine oils such as perfluorodecane, perfluorooctane, and perfluoropolyether, lanolin derivatives such as lanolin, lanolin acetate, lanolin fatty acid isopropyl, and lanolin alcohol. Of these, one or more of them can be used in combination. Of these, hydrocarbon oils and ester oils are preferred, and hydrocarbon oils having a viscosity at 40 ° C. of 16 mm ² / s or less or ester oils of C27 or less are particularly preferred, and have excellent stability over time and no stickiness. An oil-in-water type emulsified cosmetic having good spreadability can be obtained.

The surface treatment amount of the component (a1) of the fine particle metal oxide by alkyl titanate is preferably surface treatment agent / fine particle metal oxide = 0.02 to 0.25, more preferably, 0.02 to 0.25 in terms of mass ratio.
03-0.18. Within this range, better usability can be given, and dispersibility and stability over time are also improved. When the surface treatment agent / particulate metal oxide is less than 0.02, it may be difficult to sufficiently obtain the above effect, and when the component (A) is prepared exceeding 0.25,
The powder may not be uniform and may not be preferable.
The surface treatment of the fine particle metal oxide may be only alkyl titanate, and may be further combined with a (dimethicone / methicone) copolymer or other surface treatment agent.

When the component (a1) used in the present invention is further surface-treated with a (dimethicone / methicone) copolymer, the amount of oil absorption of the component (a1) is decreased, and more component (a1) can be added to the dispersion composition. (Dimethicone / methicone) copolymer is INTERNATION
It is a compound listed as a (dimethicone / methicone) copolymer in ALNOMENCLATURE of COSMETIC INGREDIENTS, and is a copolymer composed of dimethylsiloxane and methylhydrogensiloxane. Usually, it is used as a surface treatment agent for powders, and is widely used as a surface treatment agent that imparts water repellency to powders and hardly generates hydrogen over time. Specifically, the compound shown by following General formula (2) can be illustrated as a preferable compound.

(A and b are each a positive integer, a + b = 7 to 50, a: b = 1: 0.2 to 1: 4)

The surface treatment amount of the component (a1) with the (dimethicone / methicone) copolymer is (mass ratio) (
Surface treatment agent) / (particulate metal oxide surface-treated with alkyl titanate) = 0.01-
0.15 is preferable, More preferably, it is 0.03-0.08. Within this range,
Furthermore, good usability can be given, and dispersibility and stability over time are also improved. If it is less than 0.01, it may be difficult to obtain the above effect sufficiently, and even if it exceeds 0.15, further improvement in the effect is difficult to obtain, and dispersibility and spread spread worsen. It may be difficult to obtain good usability.

In the present invention, the content of the component (a1) is 30 to 70 in the fine particle metal oxide dispersion composition.
It is preferably mass% (hereinafter abbreviated as “%”), more preferably 40 to 60%. Within this range, even better usability can be provided. If it is less than 30%, there is a case where a sufficient amount capable of exhibiting an ultraviolet ray preventing effect cannot be blended when blended into a cosmetic as a masterbatch (intermediate raw material). Since a large amount of component (a2) is required, it may be difficult to obtain good usability.

In the present invention, the mass ratio (a2) / (a1) of the component (a1) and the component (a2) is 0.00.
01-0.5 is preferable, More preferably, it is 0.02-0.3. Within this range, better usability can be given, and dispersibility and stability over time are also improved. If it is less than 0.01, it may be impossible to disperse even to the primary particles, and even if it exceeds 0.5, it is difficult to obtain further improvement of the effect, and it may be difficult to obtain good usability. .

The fine particle metal oxide dispersion composition of the present invention preferably contains no silicone oil. When the silicone oil is contained, the amount is preferably as small as possible, and the silicone oil content is preferably a mass ratio of all the oils in the silicone oil and the fine particle metal oxide dispersion composition (silicone oil) / (all Oil agent) = 0.2 or less, more preferably 0.1 or less, and most preferably no silicone oil is blended. When the content ratio of the silicone oil in all the oil agents is increased, the viscosity of the fine particle metal oxide dispersion composition is increased, and the dispersibility of the component (a) is decreased.

The method for producing the fine particle metal oxide dispersion composition of the present invention is not particularly limited,
For example, it can be obtained by mixing the component (a2) and the component (a3), adding the component (a1) to this, and uniformly dispersing it. In this case, examples of the equipment for uniform dispersion include a disper mixer, a homomixer, a ball mill, a bead mill, and the like, and a wet grinding apparatus such as a ball mill and a bead mill using a medium is more preferable. The said dispersion composition cannot be manufactured in the preparation process of an oil-in-water type emulsion cosmetic.

In addition to the above components, the component (A) of the present invention includes powders, surfactants, gelling agents, oxidation agents other than those described above in a quantitative and qualitative range that does not impair the effects of the present invention depending on the purpose. Inhibitors, preservatives, colorants, fragrances, cosmetic ingredients and the like can be blended.

The blending amount of the component (A) fine particle metal oxide dispersion composition is preferably 1 to 75%, and 5 to 50%.
% Is more preferable. Within this range, it is possible to obtain an oil-in-water emulsified cosmetic having no stickiness and excellent spread. Moreover, a component (A) can use 1 type (s) or 2 or more types.

The fine particle metal oxide dispersion composition used in the present invention is preliminarily mixed with the component (a3) (
By dispersing a1) with component (a2), the particulate metal oxide can be efficiently dispersed. And by emulsifying the oily component containing this composition, the component (B) and the component (C) in the aqueous component, it has excellent dispersibility and stability over time, has no stickiness, and spreads well. An oil-in-water emulsified cosmetic having the following can be obtained.

The alkylmethyl taurine salt and / or phospholipid of the component (B) used in the present invention is an emulsifier for an oil-in-water emulsified cosmetic, and contributes to improving the dispersion stability of the fine particle metal oxide dispersion composition.
The stability over time of the oil-in-water emulsified cosmetic is remarkably improved. Furthermore, it contributes to improvement in usability such as no stickiness during use. The alkylmethyl taurine salt (B) used in the present invention is not particularly limited as long as it is usually used in cosmetics. Among these, N-acylmethyl is preferred from the viewpoint of the stability over time and the effect of improving the feeling of use. Taurine salts are preferred. In addition, component (B
) Is not particularly limited as long as it is usually used in cosmetics, but if specifically exemplified, phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylglycerol, phosphatidylinositol, sphingophospholipid Phospholipids such as soybean lecithin, egg yolk lecithin, or hydrogenated products thereof, and phospholipid complexes such as phospholipid / cholesterol complex and phospholipid / phytosterol complex. The alkylmethyl taurine salt and / or phospholipid of these components (B) can be used by appropriately selecting one or more kinds as necessary.

The content of the component (B) is preferably 0.01 to 10%, more preferably 0.1 to 5%. If it is in this range, the emulsified state is good, the usability is good, and a product having sufficient aging stability is obtained. If it is less than 0.01%, sufficient stability over time may not be obtained, and even if it exceeds 5%, further improvement in emulsified state and stability over time cannot be obtained, and on the contrary, a good feeling of use is obtained. It can be difficult to obtain.

The oil component of the component (C) used in the present invention is blended for the purpose of giving oil to the skin and giving a moist and good feel. This oily component is not particularly limited as long as it is an oily component that is usually used in cosmetics, etc., such as animal oil, vegetable oil, synthetic oil, solid oil, semi-solid oil, liquid oil, volatile oil, etc. Regardless of properties. For example, hydrocarbons, fats and oils, waxes, hardened oils, ester oils, fatty acids, organic silicones, fluorine-based oils, lanolin derivatives and the like can be used, more specifically liquid paraffin, Light liquid isoparaffin, squalane, vegetable squalane, petrolatum, polyisobutylene, polybutene, paraffin wax, ceresin wax, microcrystalline wax, polyethylene wax, ethylene propylene copolymer, montan wax, fish trops wax and other hydrocarbons, moclaw, olive oil , Castor oil, mink oil, macadamian nut oil, camellia oil, rose pip oil, avocado oil and other oils, beeswax, carnauba wax, candelilla wax, wax such as gay wax, jojoba oil, 2-ethylhexanoic acid Cetyl Isononyl isononanoate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, glyceryl tri-2-ethylhexanoate, polyglyceryl diisostearate, diglyceryl triisostearate, glyceryl tribehenate, hexa (hydroxystearic acid / stearic acid / rosinic acid) ) Dipentaerythrityl, diisostearyl malate, neopentyl glycol dioctanoate, cholesteryl isostearate, cholesteryl hydroxystearate, cholesteryl stearate, lanolin fatty acid cholesteryl,
Olein fatty acid phytosteryl, N-lauroyl-L-glutamate di (cholesteryl
Esters such as behenyl octyldodecyl), N-lauroyl-L-glutamate di (phytosteryl 2-octyldodecyl), stearic acid, lauric acid, myristic acid,
Fatty acids such as behenic acid, isostearic acid, oleic acid, low polymerization dimethylpolysiloxane, high polymerization dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, cross-linked organopolysiloxane, Organic silicones such as amino-modified organopolysiloxane and fluorine-modified organopolysiloxane, fluorinated oils such as perfluorodecane, perfluorooctane and perfluoropolyether, lanolin such as lanolin, lanolin acetate, lanolin fatty acid isopropyl, and lanolin alcohol Derivatives can be exemplified, and one or more of these can be used in combination. Among these, low polymerization degree dimethylpolysiloxane,
Methylphenyl polysiloxane, decamethylcyclopentasiloxane, and liquid paraffin are particularly preferable because they give a good feeling without stickiness.

The content of component (C) is preferably 0.01 to 60%, more preferably 0.5 to 30%.
It is. If it is this range, a favorable touch can be given and the effect is further sustained, which is preferable. If it is less than 0.01%, it may be difficult to obtain the above effect sufficiently,
Even if it exceeds 60%, it is difficult to obtain further improvement of the effect, which sometimes gives oiliness.

In the oil-in-water emulsified cosmetic of the present invention, as long as it does not impair the effects of the present invention,
In addition to components (A), (B), and (C), components (A),
Surfactants other than (B) and (C), polyhydric alcohols, lower alcohols, water-soluble polymers, aqueous components such as humectants, saccharides, UV absorbers, antioxidants, anti-fading agents, preservatives, medicinal effects component,
Stabilizers, pigments, fragrances, and the like can be appropriately blended for imparting various effects.

In addition to the components (A), (B), and (C), the oil-in-water emulsified cosmetic of the present invention can contain a surfactant. Examples include ionic surfactants, anionic surfactants, and cationic surfactants. For example, as the nonionic surfactant, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil, hydrogenated castor oil, polyoxyethylene sorbitol tetra fatty acid ester, glycerin fatty acid ester, sorbitan fatty acid ester , Polyglycerol fatty acid ester, sucrose fatty acid ester, alkylpolyglucoside, N
-Alkyldimethylamine oxide polyoxyethylene glycerin fatty acid ester, polyoxyethylene cholesteryl ether, polyoxyethylene phytosteryl ether, polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene alkylphenyl ether, etc. . For example, anionic surfactants include lauric acid, myristic acid, palmitic acid, stearic acid,
Polyoxygen such as sodium salt or triethanolamine salt of fatty acid such as isostearic acid, polyoxyethylene lauryl ether phosphate, polyoxyethylene cetyl ether phosphate, polyoxyethylene oleyl ether phosphate, polyoxyethylene nonylphenyl ether phosphate And ethylene alkyl ether phosphates. Examples of cationic surfactants include stearyl trimethyl ammonium chloride, stearyl trimethyl ammonium bromide, behenyl trimethyl ammonium chloride, behenyl trimethyl ammonium bromide, cetyl trimethyl ammonium chloride, cetyl trimethyl ammonium bromide, distearyl dimethyl ammonium chloride, odor Distearyldimethylammonium chloride, dibehenyldimethylammonium chloride, dibehenyldimethylammonium bromide, dicetyldimethylammonium chloride, dicetyldimethylammonium bromide, stearyldimethylbenzylammonium chloride, dilauryldimethylammonium chloride, dipolyoxyethylene chloride ( 15E.O.) Coconut oil alkylmethylammonium chloride, dipolyoxyethylene chloride (4E.O.) lauryl ester -Tetradimethylammonium chloride, amidopropyltrimethylammonium chloride, dicocoylethylhydroxyethylmethylammonium methylsulfate and the like. Among these, from the viewpoint of aging stability and usability improvement effect,
It is preferable to use polyoxyethylene hydrogenated castor oil in combination with components (A), (B), and (C).

In addition to the components (A), (B), and (C), the oil-in-water emulsion cosmetic of the present invention can contain an aqueous component. Any soluble component may be used, for example, alcohols such as ethyl alcohol, glycols such as propylene glycol, 1,3-butylene glycol, dipropylene glycol, and polyethylene glycol, glycerol such as glycerin, diglycerin, and polyglycerin. , Plant extracts such as aloe vera, witch hazel, hamamelis, cucumber, lemon, lavender and rose.

In the oil-in-water emulsified cosmetic of the present invention, a water-soluble polymer can be blended in addition to the components (A), (B) and (C). Natural products such as guar gum, sodium chondroitin sulfate, sodium hyaluronate, gum arabic, sodium alginate, carrageenan, semi-synthetic products such as methylcellulose, hydroxyethylcellulose, carboxymethylcellulose, carboxyvinyl polymer, alkyl-added carboxyvinyl polymer, Synthetic materials such as polyvinyl alcohol, polyvinyl pyrrolidone, and sodium polyacrylate, as well as proteins, mucopolysaccharides, collagen, elastin, keratin and the like.

In the oil-in-water emulsified cosmetic of the present invention, an additive can be blended in addition to the components (A), (B), and (C). Antioxidants such as tocopherol and ascorbic acid, vitamins, anti-inflammatory agents, cosmetic ingredients such as herbal medicines, and preservatives such as paraoxybenzoic acid esters and phenoxyethanol.

The method for producing the oil-in-water emulsified cosmetic of the present invention is not particularly limited.
) And (C) are added to the component (B), an optional aqueous component, and an active agent mixed and dispersed, then water is added to emulsify, and this is filled into a container or mold. Can do.

The cosmetic of the present invention is not particularly limited, but examples of the shape include liquid, semi-solid, and solid. The product forms include facial cleansing foams, creams, cleansings, massage creams, packs, skin lotions, milky lotions, creams, serums, makeup bases, sunscreens and other skin cosmetics, foundations, white powder, eye shadows, eyeliners. , Mascara, eyebrow, concealer, lipstick, lip balm and other cosmetics for finish, hair mist, shampoo, rinse, treatment, hair tonic, hair cream, pomade, tic, liquid hair conditioner, set lotion, hair spray, etc. Cosmetics etc. can be illustrated. Among these, sunscreens, foundations, makeup bases and the like are cosmetics in which the effects of the present invention are easily exhibited.

Hereinafter, the present invention will be described in detail with reference to production examples and examples. Note that these do not limit the present invention.

Production Examples 1-7
A surface-treated fine particle metal oxide having the composition shown in Table 1 was prepared by the following production method.

(Production method)
100 parts of isopropyl alcohol and components 3 to 5 are mixed and mixed with components 1 and 2 in a Henschel mixer (Mitsui Mining Co., Ltd.). Thereafter, isopropyl alcohol was recovered at 60 ° C. under reduced pressure to obtain a surface-treated fine particle metal oxide.

Production Examples 8-17
A fine particle metal oxide dispersion composition having the composition shown in Table 2 was prepared by the following production method.

(Production method)
Ingredients (1) to (11) were mixed uniformly, and a bead mill (LMZ-0.
6) Using 3mm zirconia beads, beads filling rate 60%, agitator rotation speed 2
Dispersion was performed at 000 rpm for 5 hours to obtain a fine particle metal oxide dispersion composition.

Examples 1 to 13 and Comparative Examples 1 to 7 : Oil-in-water emulsified cosmetics Oil-in-water emulsified cosmetics having the compositions shown in Tables 3 to 5 were prepared by the following production methods. Evaluations were made on “ability”, “no stickiness”, and “goodness of spread”, and the results are also shown in Tables 3 to 5.

<Manufacturing method>
A. Components (1) to (8) are uniformly mixed and dispersed at 70 ° C.
B. Ingredients (9) to (16) are uniformly mixed and dissolved at 70 ° C.
C. Ingredients (17) and (18) are uniformly mixed and dissolved at 70 ° C.
D. B is uniformly mixed with A and gelled at 70 ° C.
E. C is uniformly mixed and dispersed in D and emulsified at 70 ° C.
F. Cool E.
G. Components (19) to (22) were added to F and mixed and dispersed uniformly to obtain an oil-in-water emulsion cosmetic.

(Evaluation method) Stability over time If the stability of the oil-in-water emulsified cosmetic is good, the viscosity change of the cosmetic before and after the acceleration test is small, and if the stability is poor, the viscosity change before and after the acceleration test Becomes larger. The accelerated test here is to store in a constant temperature bath at 50 ° C. for 4 weeks. After manufacturing oil-in-water emulsified cosmetics, store in a 30 ° C thermostatic bath for 1 day, then measure the viscosity value with a B-type viscometer, store in a 50 ° C thermostatic bath for 4 weeks, and then in a 30 ° C thermostatic bath for 1 day The viscosity values measured after storage were compared and judged according to the following criteria.
(Evaluation): (Judgment)
Viscosity change is 0 mPa · s or more and less than ± 10000 mPa · s;
Viscosity change is ± 10000 mPa · s or more and less than ± 20000 mPa · s;
Viscosity change is ± 20000 mPa · s or more and less than ± 40000 mPa · s;
Viscosity change is ± 40000 mPa · s or more; ×

(Evaluation method) Non-stickiness and good spread The oil-in-water emulsified cosmetic was subjected to a usage test by 20 panelists specializing in cosmetic evaluation.
Ask each panel to use each sample, evaluate it in 6 grades according to the following absolute evaluation criteria, give a score, calculate the average value from the total scores of all the panel members of each sample, and according to the following 4 criteria Judged.

Absolute Evaluation Criteria (Score): (Evaluation)
6 points: Very good 5 points: Good 4 points: Slightly good 3 points: Normal 2 points: Slightly bad 1 point: Bad 4 grade criteria (judgment): (Average score)
◎: Over 5 points ○: Over 5 points and under 5 points △: Over 2 points over 3.5 points ×: Up to 2 points

As shown in Tables 3 to 5, Examples 1 to 13 were excellent in all items of “stability over time”, “non-stickiness”, and “goodness of spread”. On the other hand, Comparative Examples 1 and 2 using the fine-particle metal oxide dispersion composition of Production Example 14 containing no polyhydroxystearic acid had a uniform 10% surface-treated fine-particle metal oxide of isopropyl triisostearoyl titanate of Production Example 1. It was not dispersed and all items were inferior. Moreover, it replaced with the alkylmethyl taurine salt and phospholipid, the comparative example 3 which mix | blended distearyl dimethyl ammonium chloride which is a cationic surfactant, 2-alkyl-N-carboxymethyl-N-hydroxy which is an amphoteric surfactant. Comparative Example 4 with ethyl imidazolinium betaine, Comparative Example 5 with stearic acid, an anionic surfactant, and Comparative Example 6 with polyoxyethylene (60) hydrogenated castor oil Isostearoyl titanate 10% surface-treated fine particle metal oxide was not uniformly dispersed, the stability over time was particularly bad, and all items were inferior . Comparative Example using port instead of re-hydroxystearic acid (acrylates / dimethicone) particulate metal oxide dispersion composition of Preparation 15 was blended copolymer 7, stability over time is particularly bad, inferior in all items It was.

Example 14: Oil-in-water emulsified cosmetic
(Ingredient) (%)
1. Stearoyl methyl taurine Na 2
2. Glycerin 20
3. 1,3-butylene glycol 5
4). Sorbitan fatty acid ester 0.1
5. Fine particle metal oxide dispersion composition of Production Example 8 10
6). Glycerol monostearate 0.5
7). Cetostearyl alcohol 1
8. Ethylhexyl methoxycinnamate 3
9. Glyceryl triethylhexanoate 2
10. Xanthan gum 0.2
11. Purified water 19.8
12 Alcohol 2
13. Methylparaben 0.2
14 Purified water remaining
(Production method)
A. Components (1) to (4) are uniformly mixed and dispersed at 70 ° C.
B. (5) to (9) are uniformly mixed and dissolved at 70 ° C.
C. Components (10) to (11) are dissolved at 70 ° C.
D. B is uniformly mixed with A and gelled at 70 ° C.
E. C is uniformly mixed and dispersed in D and emulsified at 70 ° C.
F. Cool E.
G. Components (12) to (14) were added to F and mixed and dispersed uniformly to obtain an oil-in-water emulsion cosmetic.

Example 14 was an oil-in-water emulsion having excellent stability over time, no stickiness, and good usability.

Example 15: Oil-in-water emulsified cosmetic
(Ingredient) (%)
1. Hydrogenated phospholipid 2
2. Glycerin 20
3. 1,3-butylene glycol 5
4). Sorbitan fatty acid ester 0.1
5. Fine particle metal oxide dispersion composition of Production Example 8 10
6). Glycerol monostearate 0.5
7). Cetostearyl alcohol 1
8. Ethylhexyl methoxycinnamate 3
9. Glyceryl triethylhexanoate 2
10. Xanthan gum 0.2
11. Purified water 19.8
12 Ethanol 2
13. Methylparaben 0.2
14 Purified water remaining



(Production method)
A. Components (1) to (4) are uniformly mixed and dispersed at 70 ° C.
B. (5) to (9) are uniformly mixed and dissolved at 70 ° C.
C. Components (10) to (11) are dissolved at 70 ° C.
D. B is uniformly mixed with A and gelled at 70 ° C.
E. C is uniformly mixed and dispersed in D and emulsified at 70 ° C.
F. Cool E.
G. Components (12) to (14) were added to F and mixed and dispersed uniformly to obtain an oil-in-water emulsion cosmetic.

Example 15 was an oil-in-water emulsion having excellent stability over time, no stickiness, and good usability.

Example 16: Oil-in-water emulsified cosmetic
(Ingredient) (%)
1. Stearoyl methyl taurine Na 2
2. Hydroxypropyl starch phosphate 2
3. Purified water remaining
4.1,3-Butylene glycol 5
5. Polyoxyethylene alkyl ether phosphoric acid 0.1
6). Triethanolamine 0.1
7). Fine particle metal oxide dispersion composition of Production Example 8 10
8). Glycerol monostearate 0.5
9. Cetostearyl alcohol 1
10. Ethyl hexyl methoxycinnamate 3
11. Glyceryl triethylhexanoate 2
12 Ethanol 2
13. Methylparaben 0.2
(Production method)
A. Components (1) to (6) are uniformly mixed and dispersed at 70 ° C.
B. Ingredients (7) to (11) are uniformly mixed and dissolved at 70 ° C.
C. B is uniformly mixed and dispersed in A and emulsified at 70 ° C.
D. C is cooled.
E. Components (12) and (13) were added to D, and mixed and dispersed uniformly to obtain an oil-in-water emulsion cosmetic.

Example 16 was an oil-in-water emulsion having excellent stability over time, no stickiness, and good usability.

Claims (9)

Component (A3) fine particles (A1) fine particles are dispersed in the presence of component (a2) polyhydroxystearic acid in the presence of component (a2) polytitanate in a non-silicone oil. Obtaining a metal oxide dispersion composition;
Wherein the component (A), the steps of blending a surfactant selected from the components (B) alkyl methyl taurine salts and / or phospholipids, and component (C) an oil component, a,
An oil- in- water emulsified cosmetic obtained by a method comprising: The oil-in-water emulsified makeup according to claim 1, wherein the surface treatment amount of the component (a1) with an alkyl titanate is surface treatment agent / particulate metal oxide = 0.02 to 0.25 in mass ratio. Fee. The oil-in-water emulsified cosmetic according to claim 1 or 2, wherein the fine metal oxide (a1) is further surface-treated with a (dimethicone / methicone) copolymer. The oil-in-water emulsion cosmetic according to any one of claims 1 to 3, wherein the content of the component (a1) is 30 to 70% by mass in the fine particle metal oxide dispersion composition. Said to contain a mass ratio of the fine metal oxide particles dispersed composition components (a1) and the component (a2) (a2) / ( a1) is no claim 1, characterized in that 0.01 to 0.5 5. The oil-in-water emulsified cosmetic according to any one of 4 above. The oil-in-water emulsified cosmetic according to any one of claims 1 to 5, wherein the non-silicone oil of component (a3) is a hydrocarbon oil or an ester oil. The non-silicone oil agent component (a3) is 40 viscosity at ℃ of any one of claims 1 to 6, characterized in that it is 16 mm ² / s or less in hydrocarbon oil or number 27 or less ester oil carbon The oil-in-water emulsified cosmetic according to item. The oil-in-water emulsified cosmetic according to any one of claims 1 to 7, wherein the content of the component (B) is 0.1 to 5% by mass. Component (A3) fine particles (A1) fine particles are dispersed in the presence of component (a2) polyhydroxystearic acid in the presence of component (a2) polytitanate in a non-silicone oil. Obtaining a metal oxide dispersion composition;
A step of blending the component (A), a component (B) a surfactant selected from alkylmethyl taurate and / or phospholipid, and a component (C) an oil component;
A method for producing an oil-in-water emulsified cosmetic comprising: