WO2015146702A1 - 水中油型乳化化粧料 - Google Patents
水中油型乳化化粧料 Download PDFInfo
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- WO2015146702A1 WO2015146702A1 PCT/JP2015/057832 JP2015057832W WO2015146702A1 WO 2015146702 A1 WO2015146702 A1 WO 2015146702A1 JP 2015057832 W JP2015057832 W JP 2015057832W WO 2015146702 A1 WO2015146702 A1 WO 2015146702A1
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- oil
- emulsified cosmetic
- water
- titanium oxide
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/04—Dispersions; Emulsions
- A61K8/06—Emulsions
- A61K8/062—Oil-in-water emulsions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/29—Titanium; Compounds thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/34—Alcohols
- A61K8/342—Alcohols having more than seven atoms in an unbroken chain
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/36—Carboxylic acids; Salts or anhydrides thereof
- A61K8/361—Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/37—Esters of carboxylic acids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
- A61K8/4973—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with oxygen as the only hetero atom
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/58—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus
- A61K8/585—Organosilicon compounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/60—Sugars; Derivatives thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
- A61K8/86—Polyethers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
- A61Q1/02—Preparations containing skin colorants, e.g. pigments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/41—Particular ingredients further characterized by their size
- A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
Definitions
- the present invention relates to an oil-in-water emulsified cosmetic. More specifically, the present invention relates to an oil-in-water emulsified cosmetic having an effect of making the skin look clean and having excellent emulsification stability.
- Titanium oxide has a high refractive index as well as a white pigment, so it adjusts the skin tone such as reddish face and dullness, conceals color unevenness such as spots and freckles, and as a coating that cleanly corrects the apparent skin.
- UV rays are physically scattered and absorbed on the particle surface, they are widely used in cosmetics as UV protection agents.
- titanium oxide or aggregated particles of titanium oxide having an average particle size of 0.1 ⁇ m or more is used.
- cosmetics containing a combination of titanium dioxide having an average particle size of 0.1 to 0.5 ⁇ m and titanium dioxide having a mean particle size of 0.5 to 1.5 ⁇ m have a natural skin color and excellent covering power. It is supposed to have.
- cosmetics containing rutile-type titanium dioxide aggregated particles having a particle size of 0.1 to 5.0 ⁇ m are excellent in spreading and finishing feeling, excellent in coloring power and hiding power on the skin, and in color. It is said to produce a feeling of bare skin that does not float.
- fine particle titanium oxide having an average particle diameter of less than 0.1 ⁇ m, typically 0.05 ⁇ m or less is used.
- Patent Document 3 by using an ultrafine titanium oxide having an average particle diameter of 0.005 to 0.05 ⁇ m that has been subjected to a specific surface treatment, it has high UV protection, high transparency, and bluishness. It is said that there will be no cosmetics.
- Patent Document 4 As cosmetics with improved dispersibility and stability of fine particle powder, for example, in Patent Document 4, a specific surface treatment is applied to powder as an ultraviolet scattering agent, and a specific oil and dispersant are used. A sunscreen oil-in-water emulsified cosmetic dispersed in this manner has been proposed.
- Patent Document 5 contains a sunscreen agent, a structuring agent, a hydrophilic surfactant, a thickener, and water, and constitutes a gel network structure, a liquid crystal structure, or both in the composition. It is shown that the destruction and destabilization of the active ingredient by water in the composition is suppressed.
- Patent Documents 4 and 5 both relate to sunscreen cosmetics, mainly fine powder as an ultraviolet scattering agent, that is, a powder generally having an average particle diameter of less than 0.1 ⁇ m.
- the purpose is to improve the dispersibility, and it is not intended to improve the dispersibility and stability of the powder having a larger average particle diameter.
- the powder has a tendency that the cohesive force decreases as the particle size increases and the consumption of dispersion energy decreases, so that the dispersion becomes easy and the emulsion stability tends to be improved.
- Titanium oxide has higher surface activity than zinc oxide and is more difficult to disperse than zinc oxide, but Patent Document 4 is specialized in using zinc oxide as an ultraviolet scattering agent.
- Reference 5 does not show a specific example in which titanium oxide is blended as a sunscreen.
- an oil-in-water emulsified cosmetic that can stably disperse a hydrophobized titanium oxide having an average particle size of 0.1 ⁇ m or more, and can cleanly correct the apparent skin.
- An object of the present invention is to provide an oil-in-water emulsified cosmetic having an effect of making the skin look clean, excellent in emulsification stability, and having a fresh feeling of use.
- a specific sugar in an oil-in-water emulsified cosmetic containing a specific amount of hydrophobized titanium oxide having an average particle diameter of 0.1 ⁇ m or more.
- the inventors have found that a cosmetic can be obtained and have completed the present invention.
- the present invention (A) 1 to 20% by mass of hydrophobized titanium oxide having an average particle size of 0.1 ⁇ m or more, (B) a sugar ester having a carboxyl group in its structure, (C) liquid higher fatty acid, (D) higher alcohol, (E) a nonionic surfactant, An oil-in-water emulsified cosmetic comprising (F) water and (G) an oil component is provided.
- the oil-in-water emulsified cosmetic of the present invention contains a hydrophobized titanium oxide having a high refractive index of 0.1 ⁇ m or more, thus producing a natural skin feeling with an appropriate coloring power and hiding power to make the skin look beautiful. Can do.
- a hydrophobized titanium oxide having a high refractive index of 0.1 ⁇ m or more
- nonionic surfactant and higher alcohol can be added in the presence of water.
- Emulsion stability can be remarkably improved by forming an aggregate consisting of a lamellar bimolecular film at the interface of the emulsified particles of the oil-in-water emulsified cosmetic. For this reason, generation
- Hydrophobized titanium oxide used in the oil-in-water emulsified cosmetic of the present invention has an average primary particle size of 0.1 ⁇ m or more from the viewpoint of enhancing concealability. Hydrophobized titanium oxide, or hydrophobized titanium oxide that is present as agglomerated aggregated particles in the final preparation and has an average particle diameter of 0.1 ⁇ m or more is included. These average particle diameters may be 0.1 ⁇ m or more, preferably 0.1 ⁇ m to 1 ⁇ m, more preferably 0.1 ⁇ m to 0.8 ⁇ m, and most preferably 0.2 ⁇ m to 0.3 ⁇ m.
- the average particle size is smaller than 0.1 ⁇ m, a sufficient skin correction effect cannot be obtained, and even when the average particle size is larger than 1 ⁇ m, scattering tends to decrease and the correction effect tends to decrease.
- it can also further contain the hydrophobized titanium oxide of average particle diameters other than the above.
- the average particle diameter of the hydrophobized titanium oxide can be measured by observation with a transmission electron microscope (TEM) or the like.
- the method for hydrophobizing titanium oxide is not particularly limited, and a known method can be used. Specifically, silicone treatment (silicone oil such as methylhydrogenpolysiloxane, dimethylpolysiloxane, methylphenylpolysiloxane; methyltrimethoxysilane, ethyltrimethoxysilane, hexyltrimethoxysilane, octyltrimethoxysilane, octyltriethoxy) Alkylsilanes such as silanes; treatments with fluoroalkylsilanes such as trifluoromethylethyltrimethoxysilane and heptadecafluorodecyltrimethoxysilane), fatty acid treatments (palmitic acid, isostearic acid, stearic acid, lauric acid, myristic acid, behenine) Acid, oleic acid, rosin acid, treatment with 12-hydroxystearic acid
- the blending amount of (A) hydrophobized titanium oxide is 1 to 20% by mass, preferably 2 to 10% by mass, and most preferably 3 to 7% by mass with respect to the total amount of the oil-in-water emulsified cosmetic. It is. (A) If the blending amount of the hydrophobized titanium oxide is less than 1% by mass, a sufficient skin correction effect cannot be obtained, and if it exceeds 20% by mass, the emulsion stability may be impaired.
- the oil phase of the inner phase of the oil-in-water emulsified cosmetic is constituted, and the (A) hydrophobized titanium oxide is uniformly dispersed in the oil phase.
- the sugar ester having a carboxyl group in the structure include sorbitan sesquiisostearate, dipentaerythritol fatty acid ester, polyoxyethylene sorbitan monooleate, and polyoxyethylene sorbitan monostearate. Particularly preferred is sorbitan sesquiisostearate.
- the amount of the sugar ester having a carboxyl group in the structure is preferably from 0.1 to 5% by mass, more preferably from 0.2 to 3% by mass, based on the total amount of the oil-in-water emulsion cosmetic. Most preferably, it is 0.3 to 2% by mass.
- the hydrophobized titanium oxide may not be dispersed uniformly and stably. .
- (C) Liquid higher fatty acid examples include isostearic acid, oleic acid, linoleic acid, and linolenic acid. Particularly preferred is isostearic acid.
- the blending amount of the liquid higher fatty acid is preferably from 0.1 to 5% by mass, more preferably from 0.3 to 3% by mass, and most preferably from 0.3 to 3% by mass with respect to the total amount of the oil-in-water emulsified cosmetic. 5 to 2% by mass.
- the higher alcohol used in the oil-in-water emulsified cosmetic of the present invention forms an aggregate composed of lamellar bimolecular films together with the components (E) and (F) described later.
- the higher alcohol is not particularly limited as long as it can be used in the fields of cosmetics, pharmaceuticals, quasi drugs, and the like, and examples thereof include saturated linear monohydric alcohols and unsaturated monohydric alcohols.
- Saturated linear monohydric alcohols include dodecanol (lauryl alcohol), tridodecanol, tetradodecanol (myristyl alcohol), pentadecanol, hexadecanol (cetyl alcohol), heptadecanol, octadecanol (stearyl alcohol) , Nonadecanol, icosanol (aralkyl alcohol), heicosanol, docosanol (behenyl alcohol), tricosanol, tetracosanol (carnerville alcohol), pentacosanol, hexacosanol (seryl alcohol) and the like.
- unsaturated monohydric alcohols include elaidyl alcohol.
- a saturated linear monohydric alcohol is preferable from the viewpoint of stability over time.
- (D) As the higher alcohol one or more of the above may be used.
- a mixture of two or more kinds of aliphatic alcohols it is preferable to use a mixture of two or more kinds of aliphatic alcohols, and more preferably a combination in which the melting point of the mixture is 60 ° C. or higher. If this melting point is less than 60 ° C., the temperature stability of the system may be lowered depending on the formulation.
- a combination of stearyl alcohol and behenyl alcohol is preferable.
- the blending amount of the higher alcohol is preferably 0.1 to 10% by mass, more preferably 0.1 to 5% by mass, based on the total amount of the oil-in-water emulsified cosmetic. (D) If the blending amount of the higher alcohol is less than 0.1% by mass or exceeds 10% by mass, sufficient emulsion stability may not be obtained.
- Nonionic surfactant used in the oil-in-water emulsion cosmetic of the present invention is not particularly limited, but is polyethylene glycol fatty acid ester, polyoxyethylene. Fatty acid glyceryl, polyoxyethylene / methylpolysiloxane copolymer, fatty acid polyoxyethylene sorbitan, polyoxyethylene alkyl ether, maltitol hydroxy aliphatic alkyl ether, alkylated polysaccharide, alkyl glucoside, sucrose fatty acid ester, polyoxyethylene cured Castor oil glyceryl, polyoxyethylene sorbite fatty acid ester, polyoxyethylene / polyoxypropylene block copolymer, tetrapolyoxyethylene / tetrapolyoxypropylene-ethylenediamine condensate, polyoxyethylene- Beeswax lanolin derivatives, alkanolamides, polyoxyethylene-propylene glycol fatty acid est
- the blending amount of the nonionic surfactant is preferably 0.1 to 20% by mass, more preferably 0.3 to 5% by mass, based on the total amount of the oil-in-water emulsified cosmetic.
- the compounding quantity of a nonionic surfactant is less than 0.1 mass% or exceeds 20 mass%, sufficient emulsion stability may not be obtained.
- Water used in the oil-in-water emulsified cosmetic of the present invention is not particularly limited, and specific examples include purified water and ion-exchanged water.
- the blending amount of water is preferably 25 to 90% by mass, more preferably 30 to 80% by mass, and most preferably 30 to 60% by mass with respect to the total amount of the oil-in-water emulsified cosmetic.
- Oil content used for the oil-in-water emulsion cosmetic of this invention comprises the oil phase of the internal phase of an oil-in-water emulsion composition.
- the oil which can be used in the present invention is not particularly limited, and can be selected from those used in cosmetics as long as the stability is not impaired.
- Preferred oils include polar oils such as hydrocarbon oils and ester oils, silicone oils, liquid oils and the like.
- hydrocarbon oil liquid paraffin, squalane, squalene, paraffin, isoparaffin, ceresin, isohexadecane, isododecane and the like are used.
- polar oils such as ester oil include pentaerythrityl tetraethylhexanoate, cetyl ethylhexanoate, jojoba oil, dilauroyl glutamate (phytosteryl / octyldodecyl), triisostearin, glyceryl diisostearate, triethylhexanoin, dimerlinoleic acid ( Phytosteryl / behenyl), dimer linoleic acid (phytosteryl / isostearyl / cetyl / stearyl / isostearyl / cetyl / stearyl / behenyl), isopropyl palmitate, macadamia
- silicone oil examples include chain silicones such as dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane, cyclic silicones such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.
- chain silicones such as dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane
- cyclic silicones such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.
- silicone resin and silicone rubber forming a network structure.
- Liquid oils include linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, rapeseed oil, soybean oil, peanut oil, triglycerin, trioctanoic acid Examples include glycerin and glycerin triisopalmitate.
- a ultraviolet absorber can also be used as an oil component in the present invention.
- ultraviolet absorber examples include octyl methoxine namate, octocrylene, polysilicone-15, bisresorcinyl triazine, ethylhexyl triazone, diethylaminohydroxybenzoyl hexyl benzoate, oxybenzone-3, and the like.
- the amount of oil is not particularly limited, but is preferably 5 to 30% by mass with respect to the total amount of the oil-in-water emulsified cosmetic.
- the oil-in-water emulsified cosmetic of the present invention is a moisturizer, thickener, powder, alcohol, natural polymer, synthetic polymer, saccharide, as long as the effects of the present invention are not impaired in addition to the above essential components.
- Ingredients usually blended in cosmetics such as antioxidants, buffers, various extracts, stabilizers, preservatives, pigments, and fragrances can be blended as appropriate.
- the oil-in-water emulsified cosmetic of the present invention is, for example, a mixture of (B) a sugar ester having a carboxyl group in its structure, (C) a liquid higher fatty acid, and a part of (G) an oil component.
- Dispersion parts are prepared by mixing and stirring the powder containing titanium oxide using an HM mixer or the like, and the remaining (G) oil, (D) higher alcohol, and (E) nonionic surfactant are dissolved at a high temperature.
- the oil-in-water emulsified cosmetic obtained by such a production method is excellent in emulsification stability, so that the hydrophobized titanium oxide dispersed in the inner phase at the time of use does not jump out to the outer phase and color stripes are not generated, and the feeling of use is It has the effect of making your skin look clean while being fresh.
- a compounding quantity represents the mass% with respect to the whole quantity.
- the oil-in-water emulsified cosmetics having the formulations shown in Tables 1 and 2 were produced by the following production methods and evaluated as follows.
- Formulation Example A formulation example of the oil-in-water emulsified cosmetic of the present invention is given below. It goes without saying that the present invention is not limited by these formulation examples and is specified by the scope of claims. In addition, all compounding quantities are represented by the mass% with respect to the product whole quantity.
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Abstract
Description
(A)平均粒子径が0.1μm以上の疎水化処理酸化チタンを1~20質量%、
(B)カルボキシル基を構造中に有する糖エステル、
(C)液状高級脂肪酸、
(D)高級アルコール、
(E)非イオン性界面活性剤、
(F)水、及び
(G)油分
を含有することを特徴とする水中油型乳化化粧料を提供する。
また、カルボキシル基を構造中に有する糖エステルと、液状高級脂肪酸の存在により疎水化処理酸化チタンの分散性が向上することに加え、水の存在下で非イオン性界面活性剤と高級アルコールとが水中油型乳化化粧料の乳化粒子の界面にラメラ状の2分子膜からなる会合体を形成することにより、乳化安定性を著しく向上させることができる。このため、内相に分散した疎水化処理酸化チタンが外相に飛び出すことによって引き起こされる色縞の発生等を抑えることができる。
本発明の水中油型乳化化粧料に使用される(A)疎水化処理酸化チタンは、隠蔽性を高める観点から、一次粒子の平均粒子径が0.1μm以上の疎水化処理酸化チタン、又は、最終製剤に塊状の凝集粒子として存在し、凝集粒子の平均粒子径が0.1μm以上である疎水化処理酸化チタンが含まれる。これらの平均粒子径は0.1μm以上であればよいが、好ましくは0.1μm~1μm、さらに好ましくは0.1μm~0.8μm、最も好ましくは0.2μm~0.3μmである。平均粒子径が0.1μmより小さいと十分な肌補正効果を得ることができず、1μmより大きくても散乱が低下し補正効果が減少する傾向がある。一方で、本発明の肌補正効果、分散性及び乳化安定性を損なわない範囲であれば、上記以外の平均粒子径の疎水化処理酸化チタンをさらに含むこともできる。疎水化処理酸化チタンの平均粒子径は、透過型電子顕微鏡(TEM)等による観察によって測定することができる。
本発明の水中油型乳化化粧料に使用される(B)カルボキシル基を構造中に有する糖エステルは、後述する(C)及び(G)成分と共に、水中油型乳化化粧料の内相の油相を構成し、当該油相に上記(A)疎水化処理酸化チタンを均一に分散させる。(B)カルボキシル基を構造中に有する糖エステルとしては、例えば、セスキイソステアリン酸ソルビタン、ジペンタエリトリット脂肪酸エステル、モノオレイン酸ポリオキシエチレンソルビタン、モノステアリン酸ポリオキシエチレンソルビタンなどが挙げられる。特に好ましくはセスキイソステアリン酸ソルビタンである。
本発明の水中油型乳化化粧料に使用される(C)液状高級脂肪酸は、例えば、イソステアリン酸、オレイン酸、リノール酸、リノレン酸などが挙げられる。特に好ましくはイソステアリン酸である。
本発明の水中油型乳化化粧料に使用される(D)高級アルコールは、後述する(E)及び(F)成分とともにラメラ状の2分子膜からなる会合体を形成する。
(D)高級アルコールは、化粧品、医薬品、医薬部外品等の分野において使用できるものであれば特に限定されず、例えば、飽和直鎖一価アルコール、不飽和一価アルコールなどが挙げられる。飽和直鎖一価アルコールとしては、ドデカノール(ラウリルアルコール)、トリドデカノール、テトラドデカノール(ミリスチルアルコール)、ペンタデカノール、ヘキサデカノール(セチルアルコール)、ヘプタデカノール、オクタデカノール(ステアリルアルコール)、ノナデカノール、イコサノール(アラキルアルコール)、ヘンイコサノール、ドコサノール(ベヘニルアルコール)、トリコサノール、テトラコサノール(カルナービルアルコール)、ペンタコサノール、ヘキサコサノール(セリルアルコール)等が挙げられる。不飽和一価アルコールとしては、エライジルアルコール等が挙げられる。本発明では経時安定性の点から飽和直鎖一価アルコールが好ましい。
本発明の水中油型乳化化粧料に使用される(E)非イオン性界面活性剤は、特に限定されるものではないが、ポリエチレングリコール脂肪酸エステル、ポリオキシエチレン脂肪酸グリセリル、ポリオキシエチレン・メチルポリシロキサン共重合体、脂肪酸ポリオキシエチレンソルビタン、ポリオキシエチレンアルキルエーテル、マルチトールヒドロキシ脂肪族アルキルエーテル、アルキル化多糖、アルキルグルコシド、ショ糖脂肪酸エステル、ポリオキシエチレン硬化ヒマシ油グリセリル、ポリオキシエチレンソルビット脂肪酸エステル、ポリオキシエチレン・ポリオキシプロピレンブロック共重合体、テトラポリオキシエチレン・テトラポリオキシプロピレン-エチレンジアミン縮合物、ポリオキシエチレン-ミツロウ・ラノリン誘導体、アルカノールアミド、ポリオキシエチレン-プロピレングリコール脂肪酸エステル、ポリオキシエチレン-アルキルアミン、ポリオキシエチレン-脂肪酸アミド、アルキルエトキシジメチルアミンオキシド、トリオレイルリン酸などが挙げられ、親水性であるものが好ましく、特にHLB8以上のものが好ましい。特に好ましい例として、ベヘネス-20、ポリソルベート60、ステアリン酸PEG-40が挙げられる。
非イオン性界面活性剤は1種又は2種以上を用いることができる。
本発明の水中油型乳化化粧料に使用される(F)水は特に限定されず、具体的に示すとすれば、精製水、イオン交換水などが挙げられる。
(F)水の配合量は、水中油型乳化化粧料全量に対して、25~90質量%が好ましく、さらに好ましくは30~80質量%であり、最も好ましくは30~60質量%である。(F)水の配合量が上記範囲外であると、水中油型乳化化粧料の安定性が低下したり、みずみずしい使用感が低下したりする場合がある。
本発明の水中油型乳化化粧料に使用される(G)油分は、水中油型乳化組成物の内相の油相を構成する。本発明に使用できる油分は特に限定されず、化粧品に用いられているものの中から安定性を損なわない範囲で選択することができる。好ましい油分としては、炭化水素油分、エステル油分などの極性油、シリコーン油、液体油脂等を挙げることができる。
エステル油分などの極性油としては、テトラエチルヘキサン酸ペンタエリスリチル、エチルヘキサン酸セチル、ホホバ油、ラウロイルグルタミン酸ジ(フィトステリル/オクチルドデシル)、トリイソステアリン、ジイソステアリン酸グリセリル、トリエチルヘキサノイン、ダイマージリノール酸(フィトステリル/ベヘニル)、ダイマージリノール酸(フィトステリル/イソステアリル/セチル/ステアリル/イソステアリル/セチル/ステアリル/ベヘニル)、パルミチン酸イソプロピル、マカダミアナッツ脂肪酸フィトステリル、テトラ(ベヘン酸/安息香酸/エチルヘキサン酸)ペンタエリスリチル、パルミチン酸エチルヘキシル、ミリスチン酸ミリスチル、ミリスチン酸イソプロピル、ジピバリン酸トリプロピレングリコール、セバシン酸ジイソプロピル、ネオペンタン酸イソデシル等が使用できる。
液体油脂としては、アマニ油、ツバキ油、マカダミアナッツ油、トウモロコシ油、ミンク油、オリーブ油、アボカド油、サザンカ油、ヒマシ油、サフラワー油、ナタネ油、大豆油、落花生油、トリグリセリン、トリオクタン酸グリセリン、トリイソパルミチン酸グリセリン等がある。
また本発明における油分として紫外線吸収剤を用いることもできる。紫外線吸収剤としては、オクチルメトキシンナメート、オクトクリレン、ポリシリコーン-15、ビスレゾルシニルトリアジン、エチルヘキシルトリアゾン、ジエチルアミノヒドロキシベンゾイル安息香酸ヘキシル、オキシベンゾン-3等が挙げられる。
[分散体パーツの調製]
(15)~(18)の混合物に(19)~(25)を加え、HMミキサー等を用いて混合攪拌する。
[溶解油分パーツの調製]
(9)~(14)を70℃で溶解して混合する。
[水相パーツの調製]
(1)に(2)~(8)を添加し、溶解する。
[水中油型乳化化粧料の調製]
上記水相パーツを70℃に加温し、分散体パーツ及び溶解油分パーツを加え、常法により乳化して冷却することにより、水中油型乳化化粧料を得る。
[肌がきれいに見える効果]
実施例及び比較例の化粧料を顔全体に適用し、見かけの肌をきれいに補正する効果について、目視にて観察し、以下の評価基準で判定した。
<評価基準>
A:明らかな補正効果が感じられる。
B:わずかに補正効果が感じられる。
C:補正効果があまり感じられない。
D:補正効果が全く感じられない。
実施例及び比較例の化粧料を使用する際に、容器(チューブ)の壁面に内相から粉末が飛び出すなどして色縞等を生じるか否かについて、目視にて観察し、以下の評価基準で判定した。
<評価基準>
A:色縞が全く認められない。
B:色縞がわずかに認められるが許容範囲内である。
C:色縞が許容範囲を超えて認められる。
D:色縞が明らかに認められる。
一方、本発明の(D)及び(E)成分を配合した場合であっても、本発明の(A)成分よりも粒径の小さい疎水化処理微粒子酸化チタンを用いると、乳化安定性には優れていたが、十分な肌補正効果を得ることができなかった(比較例5)。
これに対し、表2に示されるように、本発明の必須成分を全て配合した水中油型乳化化粧料は、肌補正効果と乳化安定性の両方に優れた効果を発揮した(実施例1~5)。
以下に、本発明の水中油型乳化化粧料の処方例を挙げる。本発明はこれらの処方例によって何ら限定されるものではなく、特許請求の範囲によって特定されるものであることはいうまでもない。なお、配合量は全て製品全量に対する質量%で表す。
(成分名) 配合量(質量%)
(1)水 残量
(2)エデト酸 0.1
(3)PEG-100水添ヒマシ油 2
(4)キサンタンガム 0.1
(5)(PEG-240/デシルテトラデセス-20/HDI)共重合体
0.5
(6)セバシン酸ジイソプロピル 10
(7)ビスエチルヘキシルオキシフェノールメトキシフェニルトリアジン
1
(8)ジエチルアミノヒドロキシベンゾイル安息香酸ヘキシル1
(9)ポリソルベート60 1.2
(10)ベヘニルアルコール 0.7
(11)ステアリルアルコール 0.2
(12)シクロメチコン 15
(13)イソステアリン酸 1
(14)セスキイソステアリン酸ソルビタン 0.5
(15)疎水化処理酸化亜鉛 10
(16)疎水化処理酸化チタン(平均粒子径0.1μm) 5
(17)疎水化処理酸化鉄(赤) 0.2
(18)疎水化処理酸化鉄(黄) 0.05
(成分名) 配合量(質量%)
(1)水 残量
(2)エデト酸 0.1
(3)PEG-100水添ヒマシ油 3
(4)オクチルメトキシシナメート 8
(5)ステアリン酸PEG-40 0.7
(6)ベヘニルアルコール 0.7
(7)ステアリルアルコール 0.2
(8)イソヘキサデカン 8
(9)カプリリルメチコン 5
(10)イソステアリン酸 1
(11)セスキイソステアリン酸ソルビタン 0.5
(12)疎水化処理酸化チタン(平均粒子径0.1μm) 12
(13)疎水化処理酸化鉄(赤) 0.2
(14)疎水化処理酸化鉄(黄) 0.05
(成分名) 配合量(質量%)
(1)水 残量
(2)エデト酸 0.1
(3)PEG-100水添ヒマシ油 3
(4)サクシノグリカン 0.1
(5)(アクリル酸Na/アクリロイルジメチルタウリンNa)共重合体
1
(6)ジ-(2-エチルヘキシル)-4’-メトキシベンザルマロネート
10
(7)エチルヘキシルトリアジン 1
(8)オキシベンゾン-5 1
(9)ポリソルベート60 0.7
(10)ベヘニルアルコール 0.7
(11)ステアリルアルコール 0.2
(12)シクロメチコン 8
(13)イソヘキサデカン 5
(14)イソステアリン酸 1
(15)セスキイソステアリン酸ソルビタン 0.5
(16)疎水化処理微粒子酸化チタン(平均粒子径0.03~0.09μm) 3
(17)疎水化処理酸化チタン(平均粒子径0.2~0.3μm)
7
(18)疎水化処理酸化鉄(赤) 0.2
(19)疎水化処理酸化鉄(黄) 0.05
Claims (3)
- (A)平均粒子径が0.1μm以上の疎水化処理酸化チタンを1~20質量%、
(B)カルボキシル基を構造中に有する糖エステル、
(C)液状高級脂肪酸、
(D)高級アルコール、
(E)非イオン性界面活性剤、
(F)水、及び
(G)油分
を含有する水中油型乳化化粧料。 - (D)高級アルコールがステアリルアルコールとベヘニルアルコールとの組み合わせである、請求項1記載の水中油型乳化化粧料。
- (E)非イオン性界面活性剤がベヘネス-20、ポリソルベート60及びステアリン酸PEG-40から選択される1種又は2種以上である、請求項1又は2に記載の水中油型乳化化粧料。
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WO2018105040A1 (ja) * | 2016-12-06 | 2018-06-14 | 株式会社 資生堂 | 水中油型乳化化粧料 |
JP7057066B2 (ja) * | 2017-03-02 | 2022-04-19 | 株式会社 資生堂 | 水中油型乳化日焼け止め化粧料 |
US11696886B2 (en) * | 2017-05-31 | 2023-07-11 | Shiseido Company, Ltd. | Cosmetic |
CN108379121A (zh) * | 2018-03-14 | 2018-08-10 | 广州雅纯化妆品制造有限公司 | 一种新型化妆品的制备方法及其应用 |
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US20170172858A1 (en) | 2017-06-22 |
JP5913411B2 (ja) | 2016-04-27 |
EP3127531A4 (en) | 2017-02-15 |
CN106132388A (zh) | 2016-11-16 |
TW201538171A (zh) | 2015-10-16 |
EP3127531A1 (en) | 2017-02-08 |
US9987201B2 (en) | 2018-06-05 |
CN106132388B (zh) | 2018-04-17 |
JP2015182994A (ja) | 2015-10-22 |
EP3127531B1 (en) | 2020-02-19 |
KR101828851B1 (ko) | 2018-02-13 |
KR20160102572A (ko) | 2016-08-30 |
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