WO2023286780A1 - Oil-in-water emulsion composition - Google Patents

Oil-in-water emulsion composition Download PDF

Info

Publication number
WO2023286780A1
WO2023286780A1 PCT/JP2022/027451 JP2022027451W WO2023286780A1 WO 2023286780 A1 WO2023286780 A1 WO 2023286780A1 JP 2022027451 W JP2022027451 W JP 2022027451W WO 2023286780 A1 WO2023286780 A1 WO 2023286780A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
mass
composition
scattering agent
parts
Prior art date
Application number
PCT/JP2022/027451
Other languages
French (fr)
Japanese (ja)
Inventor
崇広 香取
百合香 西田
歩 榎本
Original Assignee
株式会社 資生堂
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社 資生堂 filed Critical 株式会社 資生堂
Priority to CN202280042562.5A priority Critical patent/CN117479918A/en
Priority to JP2023534822A priority patent/JPWO2023286780A1/ja
Publication of WO2023286780A1 publication Critical patent/WO2023286780A1/en

Links

Classifications

    • 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
    • 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
    • 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
    • A61K8/365—Hydroxycarboxylic acids; Ketocarboxylic 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
    • A61K8/33—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
    • A61K8/72—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
    • A61K8/85—Polyesters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
    • A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations

Definitions

  • the present invention relates to an oil-in-water emulsion composition, particularly a cosmetic composition.
  • Patent Document 1 as an oil-in-water emulsified cosmetic containing an ultraviolet absorber and an ultraviolet scattering agent and having a high ultraviolet protection (SPF) and a unique fresh feeling in use, (A) 0.05 to (B) 5 to 40% by weight of oil; (C) 2.5 to 30% by weight of an ultraviolet scattering agent having a hydrophobic surface; and (D) an aqueous phase with low salt resistance.
  • an oil-in-water emulsified cosmetic comprising a thickener and (C) an ultraviolet scattering agent dispersed in an oil phase.
  • an ultraviolet scattering agent such as titanium oxide is generally dispersed in an oil component such as silicone oil in many cases.
  • an ultraviolet protection effect it is desirable to increase the amount of the ultraviolet scattering agent and the ultraviolet absorber, which is a polar oil.
  • the amount of oil for example, the amount of oil such as silicone oil or hydrocarbon oil
  • the amount of active ingredients i.e., UV scattering agent and UV absorber
  • the present invention is intended to improve the above circumstances, and the purpose thereof is to combine a fresh feeling of use and a high UV protection effect, and to make the whiteness derived from the UV scattering agent stand out after application to the skin.
  • An object of the present invention is to provide an oil-in-water emulsified composition in which the problem of clogging is improved.
  • An oil-in-water emulsion composition particularly a cosmetic composition, comprising the following components (a) to (c): (a) an ultraviolet scattering agent; (b) polyhydroxystearic acid, and (c) oil,
  • the ultraviolet scattering agent is dispersed in the oil,
  • the ultraviolet scattering agent is 50 parts by mass or more with respect to 100 parts by mass of the oil, and 55% by mass or more of the oil is a polar oil.
  • an oil-in-water emulsified composition that has both a fresh feeling of use and a high UV protection effect, and that solves the problem of conspicuous whiteness derived from UV scattering agents after application to the skin. can provide.
  • compositions of the present invention are An oil-in-water emulsion composition, particularly a cosmetic composition, comprising the following components (a) to (c): (a) an ultraviolet scattering agent; (b) polyhydroxystearic acid, and (c) oil,
  • the UV scattering agent is dispersed in the oil,
  • the ultraviolet scattering agent is 50 parts by mass or more with respect to 100 parts by mass of oil, and 55% by mass or more of the oil is polar oil. composition.
  • composition of the present invention can exhibit the effect of the present invention by including this unique component.
  • the present inventors decided to increase the proportion of the UV scattering agent in the oil containing a high proportion of polar oil. Tried.
  • the use of such a composition causes a problem that the whiteness derived from the UV scattering agent becomes conspicuous after application to the skin.
  • the present inventors diligently studied dispersants for various ultraviolet scattering agents. As a result, it was found that the use of polyhydroxystearic acid can improve the problem that the whiteness derived from the UV scattering agent becomes conspicuous on the skin after the composition is applied.
  • the composition of the present invention contains an ultraviolet scattering agent.
  • An ultraviolet scattering agent can provide an ultraviolet protection effect.
  • the ultraviolet scattering agent is not particularly limited as long as it has an ultraviolet protection effect, and may be, for example, at least one selected from the group consisting of titanium oxide, zinc oxide, iron oxide, and cerium oxide. .
  • the ultraviolet scattering agent may be one that has been subjected to hydrophobic treatment.
  • the hydrophobization treatment may be performed using a known surface treatment agent capable of hydrophobizing the surface. Examples include fluorine compound treatment, silicone treatment, silicone resin treatment, pendant treatment, and silane coupling agent treatment. , titanium coupling agent treatment, oil treatment, N-acylated lysine treatment, polyacrylic acid treatment, metallic soap treatment, amino acid treatment, inorganic compound treatment, plasma treatment, mechanochemical treatment, silane compound treatment, silazane compound treatment, etc. be done. Among these treatments, treatment with silicone or silicone resin, treatment with silane compound or silazane compound, and treatment with metal soap such as aluminum isostearate are preferable from the viewpoint of dispersion stability.
  • the ultraviolet scattering agent may be particulate, in which case the average primary particle size is not particularly limited, and may be, for example, 5 nm or more, 10 nm or more, or 15 nm or more, or 200 nm or less, 100 nm or less, or It may be 50 nm or less.
  • the "average primary particle diameter" may be obtained, for example, as the projected area circle equivalent diameter of the primary particles in the SEM image.
  • the shape of the ultraviolet scattering agent is not particularly limited, and examples thereof include spherical, plate-like, rod-like, spindle-like, needle-like, and irregular shapes.
  • the ultraviolet scattering agent is dispersed in the oil content of the composition of the present invention, and is 50 parts by mass or more per 100 parts by mass of the oil content.
  • the UV scattering agent is, for example, 50 parts by mass or more, 55 parts by mass or more, 60 parts by mass or more, 65 parts by mass or more, with respect to 100 parts by mass of oil. It may be at least 70 parts by mass, at least 70 parts by mass, at least 80 parts by mass, at least 85 parts by mass, at least 90 parts by mass, at least 95 parts by mass, or at least 100 parts by mass.
  • the upper limit of the amount of the ultraviolet scattering agent dispersed in the oil is not particularly limited. you can be at least 70 parts by mass, at least 70 parts by mass, at least 80 parts by mass, at least 85 parts by mass, at least 90 parts by mass, at least 95 parts by mass, or at least 100 parts by mass.
  • the upper limit of the amount of the ultraviolet scattering agent dispersed in the oil is not particularly limited. you can be at least 70 parts by mass
  • the content of the ultraviolet scattering agent is not particularly limited, for example 5.0% by mass or more, 7.0% by mass or more, 10% by mass or more, 12% by mass or more, or 15% by mass % or more, and may be 30% by mass or less, or 20% by mass or less.
  • the composition of the invention comprises polyhydroxystearic acid.
  • Polyhydroxystearic acid mainly plays the role of uniformly dispersing the ultraviolet ray scattering agent in the oil.
  • polyhydroxystearic acid a compound obtained by forming an ester bond with hydroxystearic acid to form an oligomer can be used, and a commercially available product can be used.
  • the degree of polymerization of polyhydroxystearic acid is not particularly limited, and may be 4-8, for example.
  • the content of polyhydroxystearic acid is not particularly limited, and may be appropriately adjusted according to the content of the ultraviolet ray scattering agent. More specifically, the content of polyhydroxystearic acid may be, for example, 0.1% by mass or more, 0.5% by mass or more, or 1.0% by mass or more, and 3.0% by mass or less, It may be 2.5 mass % or less, 2.0 mass % or less, or 1.5 mass % or less.
  • the polyhydroxystearic acid is, for example, 3.0 parts by mass or more and 3 parts by mass with respect to 100 parts by mass of the UV scattering agent, from the viewpoint of improving the dispersibility of the UV scattering agent in oil. .5 parts by mass or more, 4.0 parts by mass or more, 4.5 parts by mass or more, 5.0 parts by mass or more, 5.5 parts by mass or more, 6.0 parts by mass or more, or 6.5 parts by mass or more Also, from the viewpoint of stability against emulsification, it may be 10 parts by mass or less, 9.0 parts by mass or less, or 8.0 parts by mass or less.
  • composition of the present invention contains oil.
  • the oil content is not particularly limited, and from the viewpoint of improving the fresh feeling of use, for example, 25% by mass or less, 23% by mass or less, 20% by mass or less, 19% by mass or less, or It may be 18% by mass or less, and from the viewpoint of dispersing the ultraviolet scattering agent or improving the content of the polar oil having an ultraviolet protection effect, for example, 10% by mass or more, or 15% by mass or more. good.
  • oil includes polar oil.
  • polar oil accounts for 55% by mass or more, preferably 60% by mass or more, more preferably 70% by mass or more, even more preferably 80% by mass or more, and particularly preferably 85% by mass or more.
  • the upper limit of the ratio of the polar oil to the oil content is not particularly limited, and for example, polar oil may account for 100% by mass of the oil content.
  • polar oils include ester oils and UV absorbers.
  • the polar oil preferably contains an ultraviolet absorber from the viewpoint of improving the ultraviolet protection effect while obtaining a fresh feeling of use.
  • the ratio of the ultraviolet absorber contained in the polar oil is, for example, 40% by mass or more, preferably 50% by mass or more, and more preferably 60% by mass or more.
  • it since it contains a larger amount of polar oil than conventional cosmetic compositions, it is possible to stably incorporate, for example, a highly polar perfume.
  • ester oils that can be used as polar oils in the present invention include tripropylene glycol dineopentanoate, isononyl isononanoate, isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, and laurin.
  • UV absorbers that can be used as polar oils in the present invention include benzoic acid derivatives, salicylic acid derivatives, cinnamic acid derivatives, dibenzoylmethane derivatives, ⁇ , ⁇ -diphenylacrylate derivatives, benzophenone derivatives, and benzylidene camphor. derivatives, phenylbenzimidazole derivatives, triazine derivatives, phenylbenzotriazole derivatives, anthranyl derivatives, imidazoline derivatives, benzalmalonate derivatives, 4,4-diarylbutadiene derivatives and the like, but are not limited thereto. In addition, some specific examples and trade names of these will be exemplified below.
  • benzoic acid derivatives include ethyl para-aminobenzoate (PABA), ethyl-dihydroxypropyl PABA, ethylhexyl-dimethyl PABA (eg "Escarol 507"; manufactured by ISP), glyceryl PABA, PEG-25-PABA (eg "Uvinal P25”; manufactured by BASF), and hexyl diethylaminohydroxybenzoylbenzoate (eg, "Uvinal A Plus”), etc., but not limited thereto.
  • PABA ethyl para-aminobenzoate
  • Escarol 507 ethyl-dihydroxypropyl PABA
  • ethylhexyl-dimethyl PABA eg "Escarol 507”
  • glyceryl PABA eg "Uvinal P25”; manufactured by BASF
  • hexyl diethylaminohydroxybenzoylbenzoate
  • salicylic acid derivatives include homosalate (“Eusolex HMS”; manufactured by Rona/EM Industries), ethylhexyl salicylate (e.g. “NeoHeliopan OS”; manufactured by Harman & Reimer), Examples include, but are not limited to, propylene glycol salicylate (e.g., "Dipsal”; manufactured by Skell) and TEA salicylate (e.g., "Neo Heliopan TS”; manufactured by Harman & Reimer).
  • cinnamic acid derivatives include ethylhexyl methoxycinnamate (octyl methoxycinnamate; for example, "Uvinal MC80"; manufactured by BASF Japan Ltd.), isopropyl methoxycinnamate, and isoamyl methoxycinnamate (for example, "Neo Heliopan E1000”; Harman & Reimer), cinnoxate, DEA methoxycinnamate, diisopropyl methylcinnamate, glyceryl-ethylhexanoate-dimethoxycinnamate, and di-(2-ethylhexyl)-4'-methoxybenzalmalonate, etc. include, but are not limited to.
  • Dibenzoylmethane derivatives include, but are not limited to, 4-tert-butyl-4'-methoxydibenzoylmethane (eg, "Parsol 1789").
  • ⁇ , ⁇ -diphenyl acrylate derivative examples include, but are not limited to, octocrylene (eg, "Ubinal N539"; manufactured by BASF).
  • Benzophenone derivatives include benzophenone-1 (eg "Uvinal 400"; manufactured by BASF), benzophenone-2 (eg “Ubinal D50”; manufactured by BASF), benzophenone-3 or oxybenzone (eg "Ubinal M40"; manufactured by BASF).
  • benzophenone-4 eg “Ubinal MS40”; manufactured by BASF
  • benzophenone-5 benzophenone-6 (eg “Helisorb 11”; Norquai)
  • benzophenone-8 eg “Spectra-sorb (Spectra- Sorb) UV-24”; manufactured by American Cyanamid
  • benzophenone-9 eg, "Uvinal DS-49"; manufactured by BASF
  • benzophenone-12 etc., but are not limited thereto.
  • benzylidene camphor derivatives include 3-benzylidene camphor (eg, "Mexoryl SD”; manufactured by Simex), 4-methylbenzylidene camphor, benzylidene camphor sulfonic acid (eg, "Megizolyl SL”; manufactured by Simex), methosulfate camphor.
  • benzalkonium e.g., "Megizolyl SO”; manufactured by Simex
  • terephthalylidene dicamphor sulfonic acid e.g, "Megizolyl SX”; manufactured by Simex
  • polyacrylamidemethylbenzylidene camphor e.g, "Megizolyl SW”; manufactured by Simex
  • Phenylbenzimidazole derivatives include phenylbenzimidazole sulfonic acid (e.g. "Usolex 232"; manufactured by Merck) and disodium phenyldibenzimidazole tetrasulfonate (e.g. "Neo Heliopan AP”; manufactured by Harman & Reimer). ) and the like, but are not limited to these.
  • triazine derivatives include bisethylhexyloxyphenol methoxyphenyltriazine, ethylhexyltriazone (e.g. "Uvinal T150”; manufactured by BASF), and diethihexylbutamide triazone (e.g. "Uvasorb HEB”; manufactured by Sigma 3V). , and 2,4,6-tris(diisobutyl-4′-aminobenzalmalonate)-s-triazine, and the like.
  • Phenylbenzotriazole derivatives include drometrizole trisiloxane (e.g. "Silatrizole”; manufactured by Rhodia Shimmy) and methylenebis(benzotriazolyltetramethylbutylphenol) (e.g. "Tinosorb M” (Ciba Specialty). (Tea Chemicals Co., Ltd.)), etc., but are not limited to these.
  • anthranil derivatives include, but are not limited to, menthyl anthranilate (eg, "Neo Heliopan MA”; manufactured by Harman & Reimer).
  • imidazoline derivatives include, but are not limited to, ethylhexyldimethoxybenzylidene dioxoimidazoline propionate.
  • Benzalmalonate derivatives include, but are not limited to, polyorganosiloxanes having benzalmalonate functional groups (for example, polysilicone-15; "Parsol SLX”; manufactured by DSM Nutrition Japan).
  • 4,4-diarylbutadiene derivatives include, but are not limited to, 1,1-dicarboxy(2,2'-dimethylpropyl)-4,4-diphenylbutadiene and the like.
  • the polar oil for example, a polar oil having an IOB value of 0.17 to 0.63 is preferably used.
  • the IOB value is an abbreviation for Inorganic/Organic Balance (inorganic/organic ratio), which is a value representing the ratio of the inorganic value to the organic value, and is an index indicating the degree of polarity of an organic compound. It becomes.
  • composition of the present invention may further contain oil other than the polar oil described above as an oil, as long as the effects of the present invention are not impaired.
  • oil components are not particularly limited, and include, for example, hydrocarbon oils, silicone oils, and the like.
  • oils include linear silicone oils such as polydimethylsiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane, and octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and the like.
  • Hydrocarbon oils such as cyclic silicone oil, decane, dodecane, isododecane, isohexadecane, liquid paraffin, squalane, squalene, paraffin, etc., may be mentioned, but not limited to these.
  • the other oil may be volatile oil or non-volatile oil.
  • the content of the oil is, for example, 45% by mass or less, 40% by mass or less, 30% by mass or less, 20% by mass or less, or 15% by mass or less. you can
  • composition of the present invention may further contain other components within a range that does not impair the effects of the present invention.
  • Other components are exemplified below.
  • compositions of the invention may further comprise emulsifiers.
  • hydrophobically modified alkyl cellulose is preferably used as an emulsifier.
  • Hydrophobically modified alkyl cellulose is usually classified as a "polymer surfactant”.
  • hydrophobically modified alkyl cellulose refers to alkyl cellulose that has been hydrophobically modified with an alkyl group having 14 to 22 carbon atoms.
  • This hydrophobically modified alkylcellulose is a compound obtained by introducing a long-chain alkyl group, which is a hydrophobic group, into a water-soluble cellulose ether derivative, and is represented by the following general formula (I).
  • R may be the same or different, and is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a group -[CH 2 CH(CH 3 )O] m -H (wherein m is an integer of 1 to 5, preferably 1 to 3), the group —CH 2 CH 2 OH, and the group —CH 2 CH(OH)CH 2 OR′, where R′ is a number of carbon atoms 14 to 22 alkyl groups), but necessarily including the group —CH 2 CH(OH)CH 2 OR′.
  • A is a group —(CH 2 ) q — (q is an integer of 1 to 3, preferably 1), and n is an integer of 100 to 10,000, preferably 500 to 5,000. is. ]
  • the method for producing the hydrophobically-modified alkyl cellulose of formula (I) generally comprises a basic water-soluble cellulose ether derivative, specifically methyl cellulose (where R is a hydrogen atom or a methyl group), ethyl cellulose (where R is a hydrogen atom or ethyl group), propyl cellulose (R is a hydrogen atom or a propyl group), butyl cellulose (R is a hydrogen atom or a butyl group), hydroxypropyl cellulose [R is a hydrogen atom or a hydroxypropyl group (the group -[CH 2 CH (CH 3 ) O] m —H (wherein m is an integer of 1 to 5, preferably 1 to 3))], hydroxypropylmethylcellulose (R is a hydrogen atom, a methyl group, or a hydroxypropyl group (same as above)) etc., can be obtained by contacting a compound for introducing a long-chain alkyl group having 14 to
  • R′ is an alkyl group having 14 to 22 carbon atoms.
  • the content of the group —CH 2 CH(OH)CH 2 OR′ introduced into the hydrophobically-modified alkylcellulose of the present invention is preferably about 0.1 to 5.0% by mass relative to the entire hydrophobically-modified alkylcellulose. .
  • the molar ratio, reaction time, type of alkali catalyst, etc. in the reaction between the water-soluble cellulose ester derivative and the long-chain alkyl glycidyl ether may be appropriately selected.
  • purification steps such as neutralization, filtration, washing, drying, and sieving of the reaction product may be performed.
  • hydroxypropylmethylcellulose (wherein R in formula (I) is a hydrogen atom, a methyl group, or a group -[CH 2 CH ( CH 3 )O] m H and the group —CH 2 CH(OH)CH 2 OR′, q of the group A becomes 1, and the A becomes a methylene group).
  • R' in the long-chain alkyl glycidyl ether of formula (II) is an alkyl group having 14 to 22 carbon atoms, preferably an alkyl group having 14 to 20 carbon atoms, more preferably a stearyl group having 18 carbon atoms (-C 18 H37 ). If the number of carbon atoms in the alkyl group R' is less than 14 or 23 or more, the emulsion stability of the obtained hydrophobically modified alkyl cellulose is not sufficient.
  • the weight average molecular weight of the hydrophobically modified alkyl cellulose is preferably 100,000 to 1000,000, more preferably 300,000 to 800,000, still more preferably 550,000 to 750,000.
  • hydrophobically modified alkylcellulose it is preferable to use hydrophobically modified hydroxypropylmethylcellulose (hydrophobicized hydroxypropylmethylcellulose), more specifically, stearoxyhydroxypropylcellulose.
  • hydrophobically modified hydroxypropylmethylcellulose hydrophobicized hydroxypropylmethylcellulose
  • stearoxyhydroxypropylcellulose hydrophobically modified hydroxypropylmethylcellulose
  • a commercially available product can also be used as the hydrophobically modified alkyl cellulose.
  • composition of the present invention contains an emulsifier
  • its content is not particularly limited, and is, for example, 0.05% by mass or more, 0.10% by mass or more, 0.15% by mass or more, or 0.20% by mass. or more, and may be 1.0% by mass or less, 0.50% by mass or less, or 0.30% by mass or less.
  • compositions of the invention may further comprise an aqueous phase thickener.
  • Blending an aqueous phase thickener in the aqueous phase, and particularly using it in combination with the emulsifier described above, is preferable from the viewpoint of improving the blending ratio of the UV scattering agent and the UV absorber while suppressing the blending amount of the oil.
  • the water-phase thickening agent is a thickening agent having a function of thickening the water phase, and in particular, the presence of electrolytes in a concentration range generally blended in cosmetics causes a decrease in viscosity.
  • an aqueous phase thickener that causes a decrease in viscosity due to an increase in electrolyte concentration is also referred to as an "aqueous phase thickener with low salt resistance".
  • Such a thickener with low salt tolerance may be selected from water-soluble thickeners conventionally blended for the purpose of adjusting the viscosity of the aqueous phase in cosmetics and the like.
  • aqueous phase thickeners include polyvinyl alcohol, polyvinyl acetate, polyvinyl methyl ether, polyvinylpyrrolidone, copolymers of vinylpyrrolidone and vinyl acetate, vinyl polymers such as carboxyvinyl polymer; sodium polyacrylate, polyethyl Acrylates, alkanolamine polyacrylates, copolymers of alkyl methacrylates and dimethylaminoethyl methacrylates, poly 2-acrylamido-2-methylpropanesulfonic acid, polymethacryloyloxytrimethylammonium, (acryloyldimethyltaurate ammonium/VP) copolymers, dimethylacrylamide/ Examples include, but are not limited to, acrylic polymers such as acryloyldimethyltaurate Na) crosspolymer.
  • thickeners with low salt tolerance compared to thickeners that thicken by entanglement of polymer chains, they form water-swellable microgels in the aqueous phase, and the swollen microgel particles
  • a type of thickening agent that thickens due to friction because it can further suppress sliminess when the cosmetic is applied to the skin.
  • the hydrophobically modified alkyl cellulose blended as the emulsifier described above also has a thickening effect due to the entanglement of polymer chains, so if a thickener that thickens by the same mechanism is further blended, the thickening effect is promoted and can cause sliminess.
  • composition of the present invention contains an aqueous phase thickener
  • its content is not particularly limited. .20% by mass or more, 0.25% by mass or more, or 0.30% by mass or more, and 3.0% by mass or less, 2.0% by mass or less, or 1.0% by mass or less good.
  • composition of the present invention may contain, for example, propylene glycol, dipropylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, and the like.
  • Glycols such as glycerin, diglycerin and polyglycerin; Sugar alcohols such as sorbitol, mannitol, maltitol, xylitol and erythritol; Sugars such as fructose, glucose, galactose, maltose, lactose and trehalose; Natural pigments such as carotene; plant-based polymers such as gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, gellan gum, and carrageenan; microbial-based polymers such as xanthan gum, dextran, succinoglucan, and pullulan; collagen, casein, albumin , animal polymers such as gelatin; starch-based polymers such as carboxymethyl starch and methylhydroxypropyl starch; methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose
  • composition of the present invention can be prepared according to a method commonly used for oil-in-water emulsified cosmetics. That is, it can be prepared by separately mixing the water phase component and the oil phase component, adding the oil phase component while stirring the water phase component, and emulsifying the water phase component.
  • the composition of the present invention can be suitably used as a cosmetic or its raw material.
  • the present invention particularly provides a cosmetic composition, more particularly a sunscreen cosmetic composition.
  • compositions of Examples and Comparative Examples were prepared according to the formulations shown in Tables 1 and 2 below. The obtained compositions were evaluated as follows.
  • the oil content of each composition shown in Table 1 is 18% by mass.
  • the oil content of each composition shown in Table 2 is 28% by mass.
  • the fact that the absorbance in the visible light region of the composition to be evaluated is less than the absorbance in the visible light region of the reference composition indicates that the whiteness derived from the UV scattering agent after application to the skin. In Tables 1 and 2, this is indicated as "A”. In addition, if the absorbance in the visible light region of the composition to be evaluated is greater than the absorbance in the visible light region of the reference composition, the whiteness derived from the UV scattering agent will be noticeable after application to the skin. In Tables 1 and 2 this is labeled "B", suggesting that the problem has not improved.
  • the absorbance in the ultraviolet light region of the composition to be evaluated is greater than the absorbance in the ultraviolet light region of the reference composition, suggesting that the UV protection effect is improved.
  • this is designated as "A”.
  • the fact that the absorbance in the ultraviolet light region of the composition to be evaluated is smaller than the absorbance in the ultraviolet light region of the reference composition suggests that the UV protection effect is reduced, Tables 1 and 2 , this is referred to as "B”.
  • compositions of Examples 1 and 2 have both a fresh feeling of use and a high UV protection effect, and after application to the skin, the whiteness derived from the UV scattering agent is conspicuous. It turns out that the problem of being stuck has been improved.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Birds (AREA)
  • Emergency Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Dermatology (AREA)
  • Inorganic Chemistry (AREA)
  • Cosmetics (AREA)

Abstract

The present invention provides an oil-in-water emulsion composition which has both fresh feeling of use and high ultraviolet light shielding effects, while ameliorating the problem of conspicuous whiteness after the application to the skin due to an ultraviolet scattering agent.　An oil-in-water emulsion composition, in particular, a cosmetic composition which contains the following components (a) to (c): (a) an ultraviolet scattering agent; (b) a polyhydroxystearic acid; and (c) an oil component. With respect to this composition, the ultraviolet scattering agent is dispersed in the oil component; the amount of the ultraviolet scattering agent is 50 parts by mass or more relative to 100 parts by mass of the oil component; and 55% by mass or more of the oil component is composed of a polar oil.

Description

水中油型乳化組成物Oil-in-water emulsion composition
　本発明は、水中油型乳化組成物、特に化粧料組成物に関する。 The present invention relates to an oil-in-water emulsion composition, particularly a cosmetic composition.
　従来、太陽光に対する皮膚防御の観点から、様々な日焼け止め用化粧料組成物が開発されている。 Conventionally, various sunscreen cosmetic compositions have been developed from the viewpoint of skin protection against sunlight.
　例えば、特許文献１では、紫外線吸収剤及び紫外線散乱剤を含み、高い紫外線防御能（ＳＰＦ）を持ちながら、独特のみずみずしい使用感触を有する水中油型乳化化粧料として、（Ａ）０．０５～１質量％の疎水変性アルキルセルロース；（Ｂ）５～４０質量％の油分；（Ｃ）２．５～３０質量％の疎水性表面を有する紫外線散乱剤；及び（Ｄ）耐塩性の低い水相増粘剤を含有し、（Ｃ）紫外線散乱剤が油相中に分散していることを特徴とする水中油型乳化化粧料が開示されている。 For example, in Patent Document 1, as an oil-in-water emulsified cosmetic containing an ultraviolet absorber and an ultraviolet scattering agent and having a high ultraviolet protection (SPF) and a unique fresh feeling in use, (A) 0.05 to (B) 5 to 40% by weight of oil; (C) 2.5 to 30% by weight of an ultraviolet scattering agent having a hydrophobic surface; and (D) an aqueous phase with low salt resistance. There is disclosed an oil-in-water emulsified cosmetic comprising a thickener and (C) an ultraviolet scattering agent dispersed in an oil phase.
特開２０１５－１２０６８２号公報JP 2015-120682 A
　水中油型の日焼け止め用化粧料組成物において、みずみずしい使用感を得るためには、油分の配合量を減らす処方を用いる必要がある。その一方で、酸化チタンのような紫外線散乱剤は、一般的に、例えばシリコーン油等の油分中に分散させて配合することが多い。また、十分な日焼け止め効果（すなわち、紫外線防御効果）を得るためには、紫外線散乱剤の配合量及び極性油である紫外線吸収剤の配合量を多くすることが望ましい。 In the oil-in-water type sunscreen cosmetic composition, it is necessary to use a formulation that reduces the amount of oil content in order to obtain a fresh feel. On the other hand, an ultraviolet scattering agent such as titanium oxide is generally dispersed in an oil component such as silicone oil in many cases. Moreover, in order to obtain a sufficient sunscreen effect (that is, an ultraviolet protection effect), it is desirable to increase the amount of the ultraviolet scattering agent and the ultraviolet absorber, which is a polar oil.
　そこで、油分の配合量（例えば、シリコーン油、又は炭化水素油等の油分の配合量）を減らしても、日焼け止め効果に対する有効成分（すなわち、紫外線散乱剤及び紫外線吸収剤）の配合量を維持させる必要がある。言い換えれば、少ない配合量の油分中において、極性油である紫外線吸収剤の割合を相対的に多くし、かつ、このような油分に対して、紫外線散乱剤の配合量の割合を多くする必要がある。 Therefore, even if the amount of oil (for example, the amount of oil such as silicone oil or hydrocarbon oil) is reduced, the amount of active ingredients (i.e., UV scattering agent and UV absorber) for sunscreen effect is maintained. need to let In other words, it is necessary to relatively increase the ratio of the UV absorber, which is a polar oil, in a small amount of oil, and to increase the ratio of the UV scattering agent to such oil. be.
　ところが、このような油分中に、すなわち、紫外線吸収剤のような極性油を通常よりも高い割合で含油する油分中に、通常よりも高い割合の紫外線散乱剤を分散させることは、簡単ではなかった。 However, it is not easy to disperse an ultraviolet scattering agent at a higher ratio than usual in such an oil, that is, in an oil containing a higher ratio of polar oil such as an ultraviolet absorber. rice field.
　これに対して、このような油分中における紫外線散乱剤の分散性を向上させるために、例えば、分散剤を用いることが考えられる。 On the other hand, in order to improve the dispersibility of the ultraviolet scattering agent in such oil, it is conceivable to use, for example, a dispersant.
　しかしながら、本発明者らの鋭意研究によれば、一般的な分散剤を化粧料組成物中に配合すると、肌への塗布後に紫外線散乱剤に由来する白さが目立ってしまう問題があることが分かった。 However, according to the intensive research of the present inventors, when a general dispersant is blended into a cosmetic composition, there is a problem that the whiteness derived from the UV scattering agent becomes conspicuous after application to the skin. Do you get it.
　本発明は、上記の事情を改善しようとするものであり、その目的は、みずみずしい使用感と高い紫外線防御効果とを兼備し、かつ肌への塗布後に紫外線散乱剤に由来する白さが目立ってしまう問題が改善されている水中油型乳化組成物を提供することである。 The present invention is intended to improve the above circumstances, and the purpose thereof is to combine a fresh feeling of use and a high UV protection effect, and to make the whiteness derived from the UV scattering agent stand out after application to the skin. An object of the present invention is to provide an oil-in-water emulsified composition in which the problem of clogging is improved.
　上記の目的を達成する本発明は、以下のとおりである。 The present invention that achieves the above objects is as follows.
　〈態様１〉
　下記成分（ａ）～（ｃ）を含む水中油型乳化組成物、特に化粧料組成物であって：
　（ａ）紫外線散乱剤、
　（ｂ）ポリヒドロキシステアリン酸、及び
　（ｃ）油分、
　前記紫外線散乱剤が、前記油分中に分散されており、
　前記紫外線散乱剤が、前記油分１００質量部に対して、５０質量部以上であり、かつ
　前記油分の５５質量％以上が、極性油である、
組成物。
　〈態様２〉
　前記紫外線散乱剤の含有量が、５．０質量％以上である、態様１に記載の組成物。
　〈態様３〉
　前記油分の含有量が、２０質量％以下である、態様１又は２に記載の組成物。
　〈態様４〉
　前記ポリヒドロキシステアリン酸が、前記紫外線散乱剤１００質量部に対して、３．０質量部以上１０質量部以下である、態様１～３のいずれか一項に記載の組成物。
　〈態様５〉
　前記極性油が、前記油分の８０質量％以上である、態様１～４のいずれか一項に記載の組成物。
　〈態様６〉
　前記極性油が、紫外線吸収剤を含む、態様１～５のいずれか一項に記載の組成物。
　〈態様７〉
　（ｄ）乳化剤を更に含む、態様１～６のいずれか一項に記載の組成物。
　〈態様８〉
　（ｅ）水相増粘剤を更に含む、態様１～７のいずれか一項に記載の組成物。
　〈態様９〉
　日焼け止め用化粧料組成物である、態様１～８のいずれか一項に記載の組成物。 <Aspect 1>
An oil-in-water emulsion composition, particularly a cosmetic composition, comprising the following components (a) to (c):
(a) an ultraviolet scattering agent;
(b) polyhydroxystearic acid, and (c) oil,
The ultraviolet scattering agent is dispersed in the oil,
The ultraviolet scattering agent is 50 parts by mass or more with respect to 100 parts by mass of the oil, and 55% by mass or more of the oil is a polar oil.
Composition.
<Aspect 2>
The composition according to aspect 1, wherein the content of the ultraviolet scattering agent is 5.0% by mass or more.
<Aspect 3>
The composition according to aspect 1 or 2, wherein the oil content is 20% by mass or less.
<Aspect 4>
The composition according to any one of aspects 1 to 3, wherein the polyhydroxystearic acid is 3.0 parts by mass or more and 10 parts by mass or less with respect to 100 parts by mass of the ultraviolet scattering agent.
<Aspect 5>
The composition according to any one of aspects 1 to 4, wherein the polar oil is 80% by mass or more of the oil content.
<Aspect 6>
6. The composition of any one of aspects 1-5, wherein the polar oil comprises a UV absorber.
<Aspect 7>
(d) The composition of any one of aspects 1-6, further comprising an emulsifier.
<Aspect 8>
(e) The composition of any one of aspects 1-7, further comprising an aqueous phase thickener.
<Aspect 9>
The composition according to any one of aspects 1 to 8, which is a sunscreen cosmetic composition.
　本発明によれば、みずみずしい使用感と高い紫外線防御効果とを兼備し、かつ肌への塗布後に紫外線散乱剤に由来する白さが目立ってしまう問題が改善されている水中油型乳化組成物を提供することができる。 According to the present invention, there is provided an oil-in-water emulsified composition that has both a fresh feeling of use and a high UV protection effect, and that solves the problem of conspicuous whiteness derived from UV scattering agents after application to the skin. can provide.
　以下、本発明の実施の形態について詳述する。なお、本発明は、以下の実施の形態に限定されるものではなく、発明の本旨の範囲内で種々変形して実施できる。 The embodiment of the present invention will be described in detail below. It should be noted that the present invention is not limited to the following embodiments, and can be carried out with various modifications within the scope of the gist of the invention.
　《組成物》
　本発明の組成物は、
下記成分（ａ）～（ｃ）を含む水中油型乳化組成物、特に化粧料組成物であって：
　（ａ）紫外線散乱剤、
　（ｂ）ポリヒドロキシステアリン酸、及び
　（ｃ）油分、
　紫外線散乱剤が、油分中に分散されており、
　紫外線散乱剤が、油分１００質量部に対して、５０質量部以上であり、かつ
　油分の５５質量％以上が、極性油である、
組成物
である。 "Composition"
The compositions of the present invention are
An oil-in-water emulsion composition, particularly a cosmetic composition, comprising the following components (a) to (c):
(a) an ultraviolet scattering agent;
(b) polyhydroxystearic acid, and (c) oil,
The UV scattering agent is dispersed in the oil,
The ultraviolet scattering agent is 50 parts by mass or more with respect to 100 parts by mass of oil, and 55% by mass or more of the oil is polar oil.
composition.
　本発明の組成物は、この特有の構成成分を含むことによって、本発明の効果を発揮することができる。 The composition of the present invention can exhibit the effect of the present invention by including this unique component.
　上述したように、みずみずしい使用感と高い紫外線防御効果とを兼備するために、本発明者らは、極性油を高い割合で含有する油分中に対して、紫外線散乱剤の割合を大きくすることを試みた。ところが、このような組成物を用いると、肌への塗布後に紫外線散乱剤に由来する白さが目立ってしまうという問題が生じることを発見した。 As described above, in order to achieve both a fresh feeling of use and a high UV protection effect, the present inventors decided to increase the proportion of the UV scattering agent in the oil containing a high proportion of polar oil. Tried. However, it has been found that the use of such a composition causes a problem that the whiteness derived from the UV scattering agent becomes conspicuous after application to the skin.
　そこで、この問題を解決するために、本発明者らは、様々な紫外線散乱剤の分散剤を鋭意に検討した。その結果、ポリヒドロキシステアリン酸を用いることによって、組成物が塗布された後に肌上で紫外線散乱剤に由来する白さが目立ってしまうという問題を改善できることが分かった。 Therefore, in order to solve this problem, the present inventors diligently studied dispersants for various ultraviolet scattering agents. As a result, it was found that the use of polyhydroxystearic acid can improve the problem that the whiteness derived from the UV scattering agent becomes conspicuous on the skin after the composition is applied.
　以下では、本発明の組成物の特有の構成成分の詳細について、説明する。 Details of the unique constituents of the composition of the present invention are described below.
　〈（ａ）紫外線散乱剤〉
　本発明の組成物は、紫外線散乱剤を含む。紫外線散乱剤は、紫外線防御効果を与えることができる。 <(a) UV scattering agent>
The composition of the present invention contains an ultraviolet scattering agent. An ultraviolet scattering agent can provide an ultraviolet protection effect.
　本発明において、紫外線散乱剤は、紫外線防御効果を有していれば、特に限定されず、例えば酸化チタン、酸化亜鉛、酸化鉄、及び酸化セリウムからなる群より選択される少なくとも一種であってよい。 In the present invention, the ultraviolet scattering agent is not particularly limited as long as it has an ultraviolet protection effect, and may be, for example, at least one selected from the group consisting of titanium oxide, zinc oxide, iron oxide, and cerium oxide. .
　紫外線散乱剤は、疎水化処理されたものであってもよい。ここで、疎水化処理は、表面を疎水化することができる公知の表面処理剤を用いて行えばよいが、例えば、フッ素化合物処理、シリコーン処理、シリコーン樹脂処理、ペンダント処理、シランカップリング剤処理、チタンカップリング剤処理、油剤処理、Ｎ－アシル化リジン処理、ポリアクリル酸処理、金属石鹸処理、アミノ酸処理、無機化合物処理、プラズマ処理、メカノケミカル処理、シラン化合物処理、シラザン化合物処理等が挙げられる。これら処理の中では、分散安定性等の観点から、シリコーン又はシリコーン樹脂による処理、シラン化合物又はシラザン化合物による処理、イソステアリン酸アルミニウム等の金属石鹸処理が好ましい。 The ultraviolet scattering agent may be one that has been subjected to hydrophobic treatment. Here, the hydrophobization treatment may be performed using a known surface treatment agent capable of hydrophobizing the surface. Examples include fluorine compound treatment, silicone treatment, silicone resin treatment, pendant treatment, and silane coupling agent treatment. , titanium coupling agent treatment, oil treatment, N-acylated lysine treatment, polyacrylic acid treatment, metallic soap treatment, amino acid treatment, inorganic compound treatment, plasma treatment, mechanochemical treatment, silane compound treatment, silazane compound treatment, etc. be done. Among these treatments, treatment with silicone or silicone resin, treatment with silane compound or silazane compound, and treatment with metal soap such as aluminum isostearate are preferable from the viewpoint of dispersion stability.
　紫外線散乱剤は、粒子状であってよく、その場合の平均一次粒子径は、特に限定されず、例えば５ｎｍ以上、１０ｎｍ以上、又は１５ｎｍ以上であってもよく、また２００ｎｍ以下、１００ｎｍ以下、又は５０ｎｍ以下であってもよい。なお、「平均一次粒子径」は、例えば、ＳＥＭ画像における一次粒子の投影面積円相当径として求めてよい。 The ultraviolet scattering agent may be particulate, in which case the average primary particle size is not particularly limited, and may be, for example, 5 nm or more, 10 nm or more, or 15 nm or more, or 200 nm or less, 100 nm or less, or It may be 50 nm or less. The "average primary particle diameter" may be obtained, for example, as the projected area circle equivalent diameter of the primary particles in the SEM image.
　紫外線散乱剤の形状は、特に限定されず、例えば球状、板状、棒状、紡錘状、針状、不定形状等が挙げられる。 The shape of the ultraviolet scattering agent is not particularly limited, and examples thereof include spherical, plate-like, rod-like, spindle-like, needle-like, and irregular shapes.
　本発明において、紫外線散乱剤は、本発明の組成物の油分中に分散されており、かつ油分１００質量部に対して、５０質量部以上である。ここで、紫外線防御効果を向上させる観点から、本発明の組成物において、紫外線散乱剤は、油分１００質量部に対して、例えば、５０質量部以上、５５質量部以上、６０質量部以上、６５質量部以上、７０質量部以上、７５質量部以上、８０質量部以上、８５質量部以上、９０質量部以上、９５質量部以上、又は１００質量部以上であってよい。なお、油分中に分散している紫外線散乱剤の量の上限は、特に限定されず、例えば、紫外線散乱剤は、油分１００質量部に対して、２００質量部以下、又は１５０質量部以下であってよい。 In the present invention, the ultraviolet scattering agent is dispersed in the oil content of the composition of the present invention, and is 50 parts by mass or more per 100 parts by mass of the oil content. Here, from the viewpoint of improving the UV protection effect, in the composition of the present invention, the UV scattering agent is, for example, 50 parts by mass or more, 55 parts by mass or more, 60 parts by mass or more, 65 parts by mass or more, with respect to 100 parts by mass of oil. It may be at least 70 parts by mass, at least 70 parts by mass, at least 80 parts by mass, at least 85 parts by mass, at least 90 parts by mass, at least 95 parts by mass, or at least 100 parts by mass. The upper limit of the amount of the ultraviolet scattering agent dispersed in the oil is not particularly limited. you can
　また、本発明の組成物において、紫外線散乱剤の含有量は、特に限定されず、例えば５．０質量％以上、７．０質量％以上、１０質量％以上、１２質量％以上、又は１５質量％以上であってよく、また、３０質量％以下、又は２０質量％以下であってよい。 In addition, in the composition of the present invention, the content of the ultraviolet scattering agent is not particularly limited, for example 5.0% by mass or more, 7.0% by mass or more, 10% by mass or more, 12% by mass or more, or 15% by mass % or more, and may be 30% by mass or less, or 20% by mass or less.
　〈（ｂ）ポリヒドロキシステアリン酸〉
　本発明の組成物は、ポリヒドロキシステアリン酸を含む。ポリヒドロキシステアリン酸は、主に、紫外線線散乱剤を油分の中に均一に分散させる役割を有する。 <(b) Polyhydroxy stearic acid>
The composition of the invention comprises polyhydroxystearic acid. Polyhydroxystearic acid mainly plays the role of uniformly dispersing the ultraviolet ray scattering agent in the oil.
　本発明において、ポリヒドロキシステアリン酸として、ヒドロキシステアリン酸がエステル結合を形成することで、オリゴマー化した化合物を用いることができ、市販のものを用いてもよい。また、ポリヒドロキシステアリン酸の重合度は、特に限定されず、例えば４～８であってよい。 In the present invention, as the polyhydroxystearic acid, a compound obtained by forming an ester bond with hydroxystearic acid to form an oligomer can be used, and a commercially available product can be used. The degree of polymerization of polyhydroxystearic acid is not particularly limited, and may be 4-8, for example.
　本発明の組成物において、ポリヒドロキシステアリン酸の含有量は、特に限定されず、紫外線線散乱剤の含有量に合わせて適宜調整してよい。より具体的には、ポリヒドロキシステアリン酸の含有量は、例えば０．１質量％以上、０．５質量％以上、又は１．０質量％以上であってよく、また３．０質量％以下、２．５質量％以下、２．０質量％以下、又は１．５質量％以下であってよい。 In the composition of the present invention, the content of polyhydroxystearic acid is not particularly limited, and may be appropriately adjusted according to the content of the ultraviolet ray scattering agent. More specifically, the content of polyhydroxystearic acid may be, for example, 0.1% by mass or more, 0.5% by mass or more, or 1.0% by mass or more, and 3.0% by mass or less, It may be 2.5 mass % or less, 2.0 mass % or less, or 1.5 mass % or less.
　また、本発明の組成物において、ポリヒドロキシステアリン酸は、紫外線散乱剤１００質量部に対して、例えば、紫外線散乱剤の油分における分散性を向上させる観点からは、３．０質量部以上、３．５質量部以上、４．０質量部以上、４．５質量部以上、５．０質量部以上、５．５質量部以上、６．０質量部以上、又は６．５質量部以上であってよく、また、乳化に対する安定性の観点からは、１０質量部以下、９．０質量部以下、又は８．０質量部以下であってよい。 Further, in the composition of the present invention, the polyhydroxystearic acid is, for example, 3.0 parts by mass or more and 3 parts by mass with respect to 100 parts by mass of the UV scattering agent, from the viewpoint of improving the dispersibility of the UV scattering agent in oil. .5 parts by mass or more, 4.0 parts by mass or more, 4.5 parts by mass or more, 5.0 parts by mass or more, 5.5 parts by mass or more, 6.0 parts by mass or more, or 6.5 parts by mass or more Also, from the viewpoint of stability against emulsification, it may be 10 parts by mass or less, 9.0 parts by mass or less, or 8.0 parts by mass or less.
　〈（ｃ）油分〉
　本発明の組成物は、油分を含む。 <(c) Oil content>
The composition of the present invention contains oil.
　本発明の組成物において、油分の含有量は、特に限定されず、みずみずしい使用感を向上させる観点から、例えば、２５質量％以下、２３質量％以下、２０質量％以下、１９質量％以下、又は１８質量％以下であってよく、また、紫外線散乱剤を分散させる観点、又は紫外線防御効果がある極性油の含有量を向上させる観点から、例えば１０質量％以上、又は１５質量％以上であってよい。 In the composition of the present invention, the oil content is not particularly limited, and from the viewpoint of improving the fresh feeling of use, for example, 25% by mass or less, 23% by mass or less, 20% by mass or less, 19% by mass or less, or It may be 18% by mass or less, and from the viewpoint of dispersing the ultraviolet scattering agent or improving the content of the polar oil having an ultraviolet protection effect, for example, 10% by mass or more, or 15% by mass or more. good.
　本発明において、油分は、極性油を含む。例えば、本発明の組成物において、油分の５５質量％以上、好ましくは６０質量％以上、より好ましくは７０質量％以上、更に好ましくは８０質量％以上、特に好ましくは８５質量％以上が極性油である。また、油分に占める極性油の割合の上限値は特に限定されず、例えば、油分の１００質量％が極性油であってもよい。 In the present invention, oil includes polar oil. For example, in the composition of the present invention, polar oil accounts for 55% by mass or more, preferably 60% by mass or more, more preferably 70% by mass or more, even more preferably 80% by mass or more, and particularly preferably 85% by mass or more. be. Moreover, the upper limit of the ratio of the polar oil to the oil content is not particularly limited, and for example, polar oil may account for 100% by mass of the oil content.
　極性油の代表例としては、エステル油及び紫外線吸収剤が挙げられる。これらのうち、みずみずしい使用感を得ながら、紫外線防御効果を向上させる観点からは、極性油は、紫外線吸収剤を含むことが好ましい。このため、極性油に含まれる紫外線吸収剤の割合は、例えば、極性油の４０質量％以上、好ましくは５０質量％以上、より好ましくは６０質量％以上とすることが好ましい。また、従来の化粧料組成物より多量の極性油を含んでいることにより、例えば高極性の香料等も安定に配合することができる。 Representative examples of polar oils include ester oils and UV absorbers. Among these, the polar oil preferably contains an ultraviolet absorber from the viewpoint of improving the ultraviolet protection effect while obtaining a fresh feeling of use. For this reason, the ratio of the ultraviolet absorber contained in the polar oil is, for example, 40% by mass or more, preferably 50% by mass or more, and more preferably 60% by mass or more. In addition, since it contains a larger amount of polar oil than conventional cosmetic compositions, it is possible to stably incorporate, for example, a highly polar perfume.
　（エステル油）
　本発明において、極性油として使用されうるエステル油の具体例には、ジネオペンタン酸トリプロピレングリコール、イソノナン酸イソノニル、ミリスチン酸イソプロピル、オクタン酸セチル、ミリスチン酸オクチルドデシル、パルミチン酸イソプロピル、ステアリン酸ブチル、ラウリン酸ヘキシル、ミリスチン酸ミリスチル、オレイン酸デシル、ジメチルオクタン酸ヘキシルデシル、乳酸セチル、乳酸ミリスチル、酢酸ラノリン、ステアリン酸イソセチル、イソステアリン酸イソセチル、１２－ヒドロキシステアリン酸コレステリル、エチルヘキサン酸セチル、ジ－２－エチルヘキサン酸エチレングリコール、ジペンタエリスリトール脂肪酸エステル、モノイソステアリン酸Ｎ－アルキルグリコール、ジカプリン酸ネオペンチルグリコール、リンゴ酸ジイソステアリル、ジ－２－ヘプチルウンデカン酸グリセリン、トリ－２－エチルヘキサン酸トリメチロールプロパン、トリイソステアリン酸トリメチロールプロパン、テトラ－２－エチルヘキサン酸ペンタエリスリチル、トリエチルヘキサノイン（トリ－２－エチルヘキサン酸グリセリン）、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、トリイソステアリン酸トリメチロールプロパン、セチル２－エチルヘキサノエート、２－エチルヘキシルパルミテート、トリミリスチン酸グリセリン、トリ－２－ヘプチルウンデカン酸グリセライド、ヒマシ油脂肪酸メチルエステル、オレイン酸オレイル、アセトグリセライド、パルミチン酸２－ヘプチルウンデシル、アジピン酸ジイソブチル、Ｎ－ラウロイル－Ｌ－グルタミン酸－２－オクチルドデシルエステル、アジピン酸ジ－２－ヘプチルウンデシル、エチルラウレート、セバシン酸ジ－２－エチルヘキシル、ミリスチン酸２－ヘキシルデシル、パルミチン酸２－ヘキシルデシル、アジピン酸２－ヘキシルデシル、セバシン酸ジイソプロピル、ピバリン酸イソデシル、コハク酸２－エチルヘキシル、及びクエン酸トリエチル等が挙げられるが、これらに限定されない。 (ester oil)
Specific examples of ester oils that can be used as polar oils in the present invention include tripropylene glycol dineopentanoate, isononyl isononanoate, isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, and laurin. Hexyl acid, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, cetyl ethylhexanoate, di-2- Ethylene glycol ethylhexanoate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, glyceryl di-2-heptylundecanoate, trimethylol tri-2-ethylhexanoate Propane, trimethylolpropane triisostearate, pentaerythrityl tetra-2-ethylhexanoate, triethylhexanoin (glyceryl tri-2-ethylhexanoate), glyceryl trioctanoate, glyceryl triisopalmitate, trimethylolpropane triisostearate , cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glyceryl trimyristate, tri-2-heptylundecanoic acid glyceride, castor oil fatty acid methyl ester, oleyl oleate, acetoglyceride, 2-heptylundecyl palmitate, Diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, palmitic acid 2 -hexyldecyl, 2-hexyldecyl adipate, diisopropyl sebacate, isodecyl pivalate, 2-ethylhexyl succinate, triethyl citrate and the like.
　（紫外線吸収剤）
　本発明において、極性油として使用されうる紫外線吸収剤の具体例には、安息香酸誘導体、サリチル酸誘導体、ケイ皮酸誘導体、ジベンゾイルメタン誘導体、β，β－ジフェニルアクリラート誘導体、ベンゾフェノン誘導体、ベンジリデンショウノウ誘導体、フェニルベンゾイミダゾール誘導体、トリアジン誘導体、フェニルベンゾトリアゾール誘導体、アントラニル誘導体、イミダゾリン誘導体、ベンザルマロナート誘導体、４，４－ジアリールブタジエン誘導体等が挙げられるが、これらに限定されない。また、以下にこれらのいくつかの具体例及び商品名等を例示的に説明する。 (Ultraviolet absorber)
Specific examples of UV absorbers that can be used as polar oils in the present invention include benzoic acid derivatives, salicylic acid derivatives, cinnamic acid derivatives, dibenzoylmethane derivatives, β,β-diphenylacrylate derivatives, benzophenone derivatives, and benzylidene camphor. derivatives, phenylbenzimidazole derivatives, triazine derivatives, phenylbenzotriazole derivatives, anthranyl derivatives, imidazoline derivatives, benzalmalonate derivatives, 4,4-diarylbutadiene derivatives and the like, but are not limited thereto. In addition, some specific examples and trade names of these will be exemplified below.
　安息香酸誘導体としては、例えばパラ－アミノ安息香酸（ＰＡＢＡ）エチル、エチル－ジヒドロキシプロピルＰＡＢＡ、エチルヘキシル－ジメチルＰＡＢＡ（例えば「エスカロール５０７」；ＩＳＰ社製）、グリセリルＰＡＢＡ、ＰＥＧ－２５－ＰＡＢＡ（例えば「ユビナールＰ２５」；ＢＡＳＦ社製）、及び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（例えば「ユビナールＡプラス」）等が挙げられるが、これらに限定されない。 Examples of benzoic acid derivatives include ethyl para-aminobenzoate (PABA), ethyl-dihydroxypropyl PABA, ethylhexyl-dimethyl PABA (eg "Escarol 507"; manufactured by ISP), glyceryl PABA, PEG-25-PABA (eg "Uvinal P25"; manufactured by BASF), and hexyl diethylaminohydroxybenzoylbenzoate (eg, "Uvinal A Plus"), etc., but not limited thereto.
　サリチル酸誘導体としては、ホモサレート（「ユーソレックス（Ｅｕｓｏｌｅｘ）ＨＭＳ」；ロナ／ＥＭインダストリーズ社製）、エチルヘキシルサリチレート（例えば「ネオ・ヘリオパン（ＮｅｏＨｅｌｉｏｐａｎ）ＯＳ」；ハーマン・アンド・レイマー社製）、ジプロピレングリコールサリチレート（例えば「ディピサル（Ｄｉｐｓａｌ）」；スケル社製）、及びＴＥＡサリチラート（例えば「ネオ・ヘリオパンＴＳ」；ハーマン・アンド・レイマー社製）等が挙げられるが、これらに限定されない。 Examples of salicylic acid derivatives include homosalate (“Eusolex HMS”; manufactured by Rona/EM Industries), ethylhexyl salicylate (e.g. “NeoHeliopan OS”; manufactured by Harman & Reimer), Examples include, but are not limited to, propylene glycol salicylate (e.g., "Dipsal"; manufactured by Skell) and TEA salicylate (e.g., "Neo Heliopan TS"; manufactured by Harman & Reimer).
　ケイ皮酸誘導体としては、メトキシケイヒ酸エチルヘキシル（オクチルメトキシシンナメート；例えば「ユビナールＭＣ８０」；ＢＡＳＦジャパン株式会社製）、メトキシケイ皮酸イソプロピル、メトキシケイ皮酸イソアミル（例えば「ネオ・ヘリオパンＥ１０００」； ハーマン・アンド・レイマー社製）、シンノキセート、ＤＥＡメトキシシンナメート、メチルケイ皮酸ジイソプロピル、グリセリル－エチルヘキサノエート－ジメトキシシンナメート、及びジ－（２－エチルヘキシル）－４'－メトキシベンザルマロネート等が挙げられるが、これらに限定されない。 Examples of cinnamic acid derivatives include ethylhexyl methoxycinnamate (octyl methoxycinnamate; for example, "Uvinal MC80"; manufactured by BASF Japan Ltd.), isopropyl methoxycinnamate, and isoamyl methoxycinnamate (for example, "Neo Heliopan E1000"; Harman & Reimer), cinnoxate, DEA methoxycinnamate, diisopropyl methylcinnamate, glyceryl-ethylhexanoate-dimethoxycinnamate, and di-(2-ethylhexyl)-4'-methoxybenzalmalonate, etc. include, but are not limited to.
　ジベンゾイルメタン誘導体としては、４－ｔｅｒｔ－ブチル－４’－メトキシジベンゾイルメタン（例えば「パルソール１７８９」）等が挙げられるが、これらに限定されない。 Dibenzoylmethane derivatives include, but are not limited to, 4-tert-butyl-4'-methoxydibenzoylmethane (eg, "Parsol 1789").
　β，β－ジフェニルアクリレート誘導体としては、オクトクリレン（例えば「ユビナールＮ５３９」；ＢＡＳＦ社製）等が挙げられるが、これらに限定されない。 Examples of the β,β-diphenyl acrylate derivative include, but are not limited to, octocrylene (eg, "Ubinal N539"; manufactured by BASF).
　ベンゾフェノン誘導体としては、ベンゾフェノン－１（例えば「ユビナール４００」；ＢＡＳＦ社製）、ベンゾフェノン－２（例えば「ユビナールＤ５０」；ＢＡＳＦ社製）、ベンゾフェノン－３またはオキシベンゾン（例えば「ユビナールＭ４０」；ＢＡＳＦ社製）、ベンゾフェノン－４（例えば「ユビナールＭＳ４０」；ＢＡＳＦ社製）、ベンゾフェノン－５、ベンゾフェノン－６（例えば「ヘリソーブ（Ｈｅｌｉｓｏｒｂ）１１」；ノルクアイ社）、ベンゾフェノン－８（例えば「スペクトラ－ソーブ（Ｓｐｅｃｔｒａ－Ｓｏｒｂ）ＵＶ－２４」；アメリカン・シアナミド社製）、ベンゾフェノン－９（例えば「ユビナールＤＳ－４９」；ＢＡＳＦ社製）、及びベンゾフェノン－１２等が挙げられるが、これらに限定されない。 Benzophenone derivatives include benzophenone-1 (eg "Uvinal 400"; manufactured by BASF), benzophenone-2 (eg "Ubinal D50"; manufactured by BASF), benzophenone-3 or oxybenzone (eg "Ubinal M40"; manufactured by BASF). ), benzophenone-4 (eg “Ubinal MS40”; manufactured by BASF), benzophenone-5, benzophenone-6 (eg “Helisorb 11”; Norquai), benzophenone-8 (eg “Spectra-sorb (Spectra- Sorb) UV-24"; manufactured by American Cyanamid), benzophenone-9 (eg, "Uvinal DS-49"; manufactured by BASF), and benzophenone-12, etc., but are not limited thereto.
　ベンジリデンショウノウ誘導体としては、３－ベンジリデンショウノウ（例えば「メギゾリル（Ｍｅｘｏｒｙｌ）ＳＤ」；シメックス社製）、４－メチルベンジリデンショウノウ、ベンジリデンショウノウスルホン酸（例えば「メギゾリルＳＬ」；シメックス社製）、メト硫酸ショウノウベンザルコニウム（例えば「メギゾリルＳＯ」；シメックス社製）、テレフタリリデンジショウノウスルホン酸（例えば「メギゾリルＳＸ」；シメックス社製）、及びポリアクリルアミドメチルベンジリデンショウノウ（例えば「メギゾリルＳＷ」；シメックス社製）等が挙げられるが、これらに限定されない。 Examples of benzylidene camphor derivatives include 3-benzylidene camphor (eg, "Mexoryl SD"; manufactured by Simex), 4-methylbenzylidene camphor, benzylidene camphor sulfonic acid (eg, "Megizolyl SL"; manufactured by Simex), methosulfate camphor. benzalkonium (e.g., "Megizolyl SO"; manufactured by Simex), terephthalylidene dicamphor sulfonic acid (eg, "Megizolyl SX"; manufactured by Simex), and polyacrylamidemethylbenzylidene camphor (eg, "Megizolyl SW"; manufactured by Simex) ) and the like, but are not limited to these.
　フェニルベンゾイミダゾール誘導体としては、フェニルベンゾイミダゾールスルホン酸（例えば「ユーソレックス２３２」；メルク社製）、及びフェニルジベンゾイミダゾールテトラスルホン酸二ナトリウム（例えば「ネオ・ヘリオパンＡＰ」；ハーマン・アンド・レイマー社製）等が挙げられるが、これらに限定されない。 Phenylbenzimidazole derivatives include phenylbenzimidazole sulfonic acid (e.g. "Usolex 232"; manufactured by Merck) and disodium phenyldibenzimidazole tetrasulfonate (e.g. "Neo Heliopan AP"; manufactured by Harman & Reimer). ) and the like, but are not limited to these.
　トリアジン誘導体としては、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、エチルヘキシルトリアゾン（例えば「ユビナールＴ１５０」；ＢＡＳＦ社製）、ジエチヘキシルブタミドトリアゾン（例えば「ユバソーブ（Ｕｖａｓｏｒｂ）ＨＥＢ」；シグマ３Ｖ社製）、及び２，４，６－トリス（ジイソブチル－４’－アミノベンザルマロナート）－ｓ－トリアジン等が挙げられるが、これらに限定されない。 Examples of triazine derivatives include bisethylhexyloxyphenol methoxyphenyltriazine, ethylhexyltriazone (e.g. "Uvinal T150"; manufactured by BASF), and diethihexylbutamide triazone (e.g. "Uvasorb HEB"; manufactured by Sigma 3V). , and 2,4,6-tris(diisobutyl-4′-aminobenzalmalonate)-s-triazine, and the like.
　フェニルベンゾトリアゾール誘導体としては、ドロメトリゾールトリシロキサン（例えば「シラトリゾール（Ｓｉｌａｔｒｉｚｏｌｅ）」；ローディア・シミー社製）、及びメチレンビス（ベンゾトリアゾリルテトラメチルブチルフェノール）（例えば「チノソーブＭ」（チバ・スペシャリティー・ケミカルズ社製））等が挙げられるが、これらに限定されない。 Phenylbenzotriazole derivatives include drometrizole trisiloxane (e.g. "Silatrizole"; manufactured by Rhodia Shimmy) and methylenebis(benzotriazolyltetramethylbutylphenol) (e.g. "Tinosorb M" (Ciba Specialty). (Tea Chemicals Co., Ltd.)), etc., but are not limited to these.
　アントラニル誘導体としては、アントラニル酸メンチル（例えば「ネオ・ヘリオパンＭＡ」；ハーマン・アンド・レイマー社製）等が挙げられるが、これらに限定されない。 Examples of anthranil derivatives include, but are not limited to, menthyl anthranilate (eg, "Neo Heliopan MA"; manufactured by Harman & Reimer).
　イミダゾリン誘導体としては、エチルヘキシルジメトキシベンジリデンジオキソイミダゾリンプロピオナート等が挙げられるが、これらに限定されない。 Examples of imidazoline derivatives include, but are not limited to, ethylhexyldimethoxybenzylidene dioxoimidazoline propionate.
　ベンザルマロナート誘導体としては、ベンザルマロナート官能基を有するポリオルガノシロキサン（例えば、ポリシリコーン－１５；「パルソールＳＬＸ」；ＤＳＭニュートリション　ジャパン社製）等が挙げられるが、これらに限定されない。 Benzalmalonate derivatives include, but are not limited to, polyorganosiloxanes having benzalmalonate functional groups (for example, polysilicone-15; "Parsol SLX"; manufactured by DSM Nutrition Japan).
　４，４－ジアリールブタジエン誘導体としては、１，１－ジカルボキシ（２，２’－ジメチルプロピル）－４，４－ジフェニルブタジエン等が挙げられるが、これらに限定されない。 4,4-diarylbutadiene derivatives include, but are not limited to, 1,1-dicarboxy(2,2'-dimethylpropyl)-4,4-diphenylbutadiene and the like.
　なお、本発明において、極性油としては、例えばＩＯＢ値が０．１７～０．６３の極性油が好ましく用いられる。ここで、ＩＯＢ値とは、Ｉｎｏｒｇａｎｉｃ／Ｏｒｇａｎｉｃ Ｂａｌａｎｃｅ（無機性／有機性比）の略であって、無機性値の有機性値に対する比率を表す値であり、有機化合物の極性の度合いを示す指標となるものである。ＩＯＢ値は、具体的には、ＩＯＢ値＝無機性値／有機性値として表される。「無機性値」、「有機性値」のそれぞれについては、例えば、分子中の炭素原子１個について「有機性値」が２０、水酸基１個について「無機性値」が１００といったように、各種原子又は官能基に応じた「無機性値」、「有機性値」が設定されており、有機化合物中の全ての原子及び官能基の「無機性値」、「有機性値」を積算することによって、当該有機化合物のＩＯＢ値を算出することができる（例えば、甲田善生著、「有機概念図－基礎と応用－」、ｐ．１１～１７、三共出版、１９８４年発行参照）。 In the present invention, as the polar oil, for example, a polar oil having an IOB value of 0.17 to 0.63 is preferably used. Here, the IOB value is an abbreviation for Inorganic/Organic Balance (inorganic/organic ratio), which is a value representing the ratio of the inorganic value to the organic value, and is an index indicating the degree of polarity of an organic compound. It becomes. The IOB value is specifically expressed as IOB value=inorganic value/organic value. For each of the "inorganicity value" and "organicity value", various The "inorganic value" and "organic value" are set according to the atom or functional group, and the "inorganic value" and "organic value" of all atoms and functional groups in the organic compound are accumulated. (See, for example, Yoshio Koda, "Organic Conceptual Diagram-Basics and Applications-", pp. 11-17, Sankyo Publishing, 1984).
　このような極性油（ＩＯＢ値が０．１７～０．６３である）としては、例えば、ラウリン酸ヘキシル（ＩＯＢ値＝０．１７）、イソノナン酸イソノニル（ＩＯＢ値＝０．２０）、テトラエチルヘキサン酸ペンタエリスリチル（ＩＯＢ値＝０．３５）、コハク酸ジエチルヘキシル（ＩＯＢ値＝０．３２）、コハク酸ジオクチル（ＩＯＢ値＝０．３６）、ジイソステアリン酸グリセリル（ＩＯＢ値＝０．２９）、ジカプリン酸ネオペンチルグリコール（ＩＯＢ値＝０．２５）、リンゴ酸ジイソステアリル（ＩＯＢ値＝０．２８）、トリ２－エチルヘキサン酸グリセリル（トリエチルヘキサノイン）（ＩＯＢ値＝０．３５）、トリオクタン酸トリメチロールプロパン（ＩＯＢ値＝０．３３）、アジピン酸ジイソブチル（ＩＯＢ値＝０．４６）、Ｎ－ラウロイル－Ｌ－グルタミン酸－２－オクチルドデシルエステル（ＩＯＢ値＝０．２９）、セバシン酸ジイソプロピル（ＩＯＢ値＝０．４０）、メトキシケイヒ酸エチルヘキシル（ＩＯＢ値＝０．２８）、エチルヘキサン酸２－エチルヘキシル（ＩＯＢ値＝０．２０）、ジピバリン酸ＰＰＧ－３（ＩＯＢ値＝０．５２）、及びトリ（カプリル酸／カプリン酸）グリセリル（ＩＯＢ値＝０．３３）等が挙げられるが、これらに限定されない。 Such polar oils (having an IOB value of 0.17 to 0.63) include, for example, hexyl laurate (IOB value = 0.17), isononyl isononanoate (IOB value = 0.20), tetraethylhexane pentaerythrityl acid (IOB value = 0.35), diethylhexyl succinate (IOB value = 0.32), dioctyl succinate (IOB value = 0.36), glyceryl diisostearate (IOB value = 0.29), Neopentyl glycol dicaprate (IOB value = 0.25), diisostearyl malate (IOB value = 0.28), glyceryl tri-2-ethylhexanoate (triethylhexanoin) (IOB value = 0.35), trioctane Trimethylolpropane acid (IOB value = 0.33), diisobutyl adipate (IOB value = 0.46), N-lauroyl-L-glutamic acid-2-octyldodecyl ester (IOB value = 0.29), diisopropyl sebacate (IOB value = 0.40), ethylhexyl methoxycinnamate (IOB value = 0.28), 2-ethylhexyl ethylhexanoate (IOB value = 0.20), PPG-3 dipivalate (IOB value = 0.52) , and tri(caprylic/capric)glyceryl (IOB value=0.33), etc., but are not limited thereto.
　（その他の油分）
　本発明の組成物は、本発明の効果を損なわない限り、油分として、上述した極性油以外のその他の油分を更に含んでよい。その他の油分としては、特に限定されず、例えば炭化水素油、又はシリコーン油等が挙げられる。 (Other oils)
The composition of the present invention may further contain oil other than the polar oil described above as an oil, as long as the effects of the present invention are not impaired. Other oil components are not particularly limited, and include, for example, hydrocarbon oils, silicone oils, and the like.
　その他の油分の具体例としては、ポリジメチルシロキサン、メチルフェニルポリシロキサン、メチルハイドロジェンポリシロキサン等の鎖状シリコーン油、およびオクタメチルシクロテトラシロキサン、デカメチルシクロペンタシロキサン、ドデカメチルシクロヘキサシロキサン等の環状シリコーン油、デカン、ドデカン、イソドデカン、イソヘキサデカン、流動パラフィン、スクワラン、スクワレン、パラフィン等の炭化水素油等が挙げられるが、これらに限定されない。 Specific examples of other oils include linear silicone oils such as polydimethylsiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane, and octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and the like. Hydrocarbon oils such as cyclic silicone oil, decane, dodecane, isododecane, isohexadecane, liquid paraffin, squalane, squalene, paraffin, etc., may be mentioned, but not limited to these.
　なお、その他の油分としては、揮発性油であってもよく、非揮発性油であってもよい。 The other oil may be volatile oil or non-volatile oil.
　なお、本発明において、その他の油分が含まれる場合のその油分に占める含有量は、例えば４５質量％以下、４０質量％以下、３０質量％以下、２０質量％以下、又は１５質量％以下であってよい。 In the present invention, when other oil is included, the content of the oil is, for example, 45% by mass or less, 40% by mass or less, 30% by mass or less, 20% by mass or less, or 15% by mass or less. you can
　〈その他の成分〉
　本発明の組成物は、上述した必須成分（ａ）～（ｃ）、及び油分の分散媒としての水に加えて、本発明の効果を損なわない範囲でその他の成分を更に含んでよい。以下では、その他の成分について、例示的に説明する。 <Other ingredients>
In addition to the essential components (a) to (c) described above and water as an oil dispersion medium, the composition of the present invention may further contain other components within a range that does not impair the effects of the present invention. Other components are exemplified below.
　（（ｄ）乳化剤）
　本発明の組成物は、乳化剤を更に含んでよい。 ((d) emulsifier)
The compositions of the invention may further comprise emulsifiers.
　また、乳化剤として、例えば疎水変性アルキルセルロースが好ましく用いられる。なお、疎水変性アルキルセルロースは、通常、「高分子界面活性剤」に分類される。 Also, as an emulsifier, for example, hydrophobically modified alkyl cellulose is preferably used. Hydrophobically modified alkyl cellulose is usually classified as a "polymer surfactant".
　ここで、疎水変性アルキルセルロースは、炭素数１４～２２のアルキル基により疎水変性されたアルキルセルロースを指す。この疎水変性アルキルセルロースは、水溶性セルロースエーテル誘導体に疎水性基である長鎖アルキル基を導入した化合物であり、下記一般式（Ｉ）で表される。 Here, hydrophobically modified alkyl cellulose refers to alkyl cellulose that has been hydrophobically modified with an alkyl group having 14 to 22 carbon atoms. This hydrophobically modified alkylcellulose is a compound obtained by introducing a long-chain alkyl group, which is a hydrophobic group, into a water-soluble cellulose ether derivative, and is represented by the following general formula (I).
Figure JPOXMLDOC01-appb-C000001
 ［式中、Ｒは、同一でも異なってもよく、水素原子、炭素原子数が１～４のアルキル基、基－［ＣＨ２ＣＨ（ＣＨ３）Ｏ］ｍ－Ｈ（式中、ｍは、１～５、好適には１～３の整数である）、基－ＣＨ２ＣＨ２ＯＨ、及び、基－ＣＨ２ＣＨ（ＯＨ）ＣＨ２ＯＲ’（式中、Ｒ’は、炭素原子数が１４～２２のアルキル基である）から選ばれる１種以上の基であるが、基－ＣＨ２ＣＨ（ＯＨ）ＣＨ２ＯＲ’を必ず含むものとする。また、Ａは、基－（ＣＨ２）ｑ－（ｑは、１～３の整数であり、好適には１である）であり、ｎは、１００～１００００、好適には５００～５０００の整数である。］
Figure JPOXMLDOC01-appb-C000001
 [In the formula, R may be the same or different, and is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a group -[CH 2 CH(CH 3 )O] m -H (wherein m is an integer of 1 to 5, preferably 1 to 3), the group —CH 2 CH 2 OH, and the group —CH 2 CH(OH)CH 2 OR′, where R′ is a number of carbon atoms 14 to 22 alkyl groups), but necessarily including the group —CH 2 CH(OH)CH 2 OR′. In addition, A is a group —(CH 2 ) q — (q is an integer of 1 to 3, preferably 1), and n is an integer of 100 to 10,000, preferably 500 to 5,000. is. ]
　式（Ｉ）のの疎水変性アルキルセルロースの製造方法は、概ね、基となる水溶性セルロースエーテル誘導体、具体的には、メチルセルロース（Ｒが水素原子又はメチル基）、エチルセルロース（Ｒが水素原子又はエチル基）、プロピルセルロース（Ｒが水素原子又はプロピル基）、ブチルセルロース（Ｒが水素原子又はブチル基）、ヒドロキシプロピルセルロース［Ｒが水素原子又はヒドロキシプロピル基（基－［ＣＨ２ＣＨ（ＣＨ３）Ｏ］ｍ－Ｈ（式中、ｍは、１～５、好適には１～３の整数である））］、ヒドロキシプロピルメチルセルロース（Ｒが水素原子、メチル基、又はヒドロキシプロピル基（同上））等に対して、炭素数１４～２２の長鎖アルキル基導入用化合物、具体的には、下記式（ＩＩ）の長鎖アルキルグリシジルエーテルを、アルカリ触媒の存在下で接触させて得ることができる。 The method for producing the hydrophobically-modified alkyl cellulose of formula (I) generally comprises a basic water-soluble cellulose ether derivative, specifically methyl cellulose (where R is a hydrogen atom or a methyl group), ethyl cellulose (where R is a hydrogen atom or ethyl group), propyl cellulose (R is a hydrogen atom or a propyl group), butyl cellulose (R is a hydrogen atom or a butyl group), hydroxypropyl cellulose [R is a hydrogen atom or a hydroxypropyl group (the group -[CH 2 CH (CH 3 ) O] m —H (wherein m is an integer of 1 to 5, preferably 1 to 3))], hydroxypropylmethylcellulose (R is a hydrogen atom, a methyl group, or a hydroxypropyl group (same as above)) etc., can be obtained by contacting a compound for introducing a long-chain alkyl group having 14 to 22 carbon atoms, specifically, a long-chain alkyl glycidyl ether of the following formula (II) in the presence of an alkali catalyst. .
Figure JPOXMLDOC01-appb-C000002
 ［式中、Ｒ’は、炭素原子数が１４～２２のアルキル基である。］
Figure JPOXMLDOC01-appb-C000002
 [In the formula, R′ is an alkyl group having 14 to 22 carbon atoms. ]
　本発明の疎水変性アルキルセルロースに導入される基－ＣＨ２ＣＨ（ＯＨ）ＣＨ２ＯＲ’含有量は、疎水変性アルキルセルロース全体に対して０．１～５．０質量％程度であるのが好ましい。このような含有率とするためには、上記水溶性セルロースエステル誘導体と長鎖アルキルグリシジルエーテルの反応の際のモル比や、反応時間、アルカリ触媒の種類等を適宜選択して製造すればよい。上記反応後、反応物の中和・濾過・洗浄・乾燥・篩分等の精製工程を行ってもよい。 The content of the group —CH 2 CH(OH)CH 2 OR′ introduced into the hydrophobically-modified alkylcellulose of the present invention is preferably about 0.1 to 5.0% by mass relative to the entire hydrophobically-modified alkylcellulose. . In order to achieve such a content, the molar ratio, reaction time, type of alkali catalyst, etc. in the reaction between the water-soluble cellulose ester derivative and the long-chain alkyl glycidyl ether may be appropriately selected. After the above reaction, purification steps such as neutralization, filtration, washing, drying, and sieving of the reaction product may be performed.
　なお、上記の水溶性セルロースエーテル誘導体のうち、特に、ヒドロキシプロピルメチルセルロースを選択することが好適である（これにより、式（Ｉ）におけるＲは、水素原子、メチル基、基－［ＣＨ２ＣＨ（ＣＨ３）Ｏ］ｍＨ、及び、基－ＣＨ２ＣＨ（ＯＨ）ＣＨ２ＯＲ’の４種のいずれかの基となり、基Ａのｑが１となり、当該Ａはメチレン基となる）。 Among the above water-soluble cellulose ether derivatives, it is particularly preferable to select hydroxypropylmethylcellulose (wherein R in formula (I) is a hydrogen atom, a methyl group, or a group -[CH 2 CH ( CH 3 )O] m H and the group —CH 2 CH(OH)CH 2 OR′, q of the group A becomes 1, and the A becomes a methylene group).
　更に、式（ＩＩ）の長鎖アルキルグリシジルエーテルにおけるＲ’は、炭素数１４～２２のアルキル基、好ましくは炭素数１４～２０のアルキル基、更に好ましくは炭素数１８のステアリル基（－Ｃ１８Ｈ３７）である。アルキル基Ｒ’の炭素数が１４未満又は２３以上では、得られた疎水変性アルキルセルロースによる乳化安定性が十分でなくなる。 Furthermore, R' in the long-chain alkyl glycidyl ether of formula (II) is an alkyl group having 14 to 22 carbon atoms, preferably an alkyl group having 14 to 20 carbon atoms, more preferably a stearyl group having 18 carbon atoms (-C 18 H37 ). If the number of carbon atoms in the alkyl group R' is less than 14 or 23 or more, the emulsion stability of the obtained hydrophobically modified alkyl cellulose is not sufficient.
　疎水変性アルキルセルロースの重量平均分子量は、１００，０００～１０００，０００が好ましく、より好ましくは３００，０００～８００，０００、更に好ましくは５５０，０００～７５０，０００である。 The weight average molecular weight of the hydrophobically modified alkyl cellulose is preferably 100,000 to 1000,000, more preferably 300,000 to 800,000, still more preferably 550,000 to 750,000.
　本発明において、疎水変性アルキルセルロースとして、疎水変性ヒドロキシプロピルメチルセルロース（疎水化ヒドロキシプロピルメチルセルロース）、より具体的には、ステアロキシヒドロキシプロピルセルロースを用いるのが好ましい。また、疎水変性アルキルセルロースとして、市販品を使用することもできる。 In the present invention, as the hydrophobically modified alkylcellulose, it is preferable to use hydrophobically modified hydroxypropylmethylcellulose (hydrophobicized hydroxypropylmethylcellulose), more specifically, stearoxyhydroxypropylcellulose. A commercially available product can also be used as the hydrophobically modified alkyl cellulose.
　本発明の組成物において、乳化剤を含む場合のその含有量は、特に限定されず、例えば０．０５質量％以上、０．１０質量％以上、０．１５質量％以上、又は０．２０質量％以上であってよく、また１．０質量％以下、０．５０質量％以下、又は０．３０質量％以下であってもよい。 When the composition of the present invention contains an emulsifier, its content is not particularly limited, and is, for example, 0.05% by mass or more, 0.10% by mass or more, 0.15% by mass or more, or 0.20% by mass. or more, and may be 1.0% by mass or less, 0.50% by mass or less, or 0.30% by mass or less.
　（（ｅ）水相増粘剤）
　本発明の組成物は、水相増粘剤を更に含んでよい。水相中に、水相増粘剤を配合し、特に上述した乳化剤と併用することは、油分の配合量を抑えながら、紫外線散乱剤及び紫外線吸収剤の配合割合を向上できる観点から好ましい。 ((e) aqueous phase thickener)
The compositions of the invention may further comprise an aqueous phase thickener. Blending an aqueous phase thickener in the aqueous phase, and particularly using it in combination with the emulsifier described above, is preferable from the viewpoint of improving the blending ratio of the UV scattering agent and the UV absorber while suppressing the blending amount of the oil.
　ここで、水相増粘剤は、水相を増粘する機能を有する増粘剤であって、特に、化粧料に一般に配合される範囲の濃度の電解質の存在によって粘度低下を生ずるものであってよい。また、本発明において、このような電解質濃度の上昇により粘度低下が生じる水相増粘剤を「耐塩性の低い水相増粘剤」とも称する。このような耐塩性の低い増粘剤は、従来から化粧料等において水相の粘度調整をする目的で配合されている水溶性増粘剤から選択されてよい。 Here, the water-phase thickening agent is a thickening agent having a function of thickening the water phase, and in particular, the presence of electrolytes in a concentration range generally blended in cosmetics causes a decrease in viscosity. you can Further, in the present invention, such an aqueous phase thickener that causes a decrease in viscosity due to an increase in electrolyte concentration is also referred to as an "aqueous phase thickener with low salt resistance". Such a thickener with low salt tolerance may be selected from water-soluble thickeners conventionally blended for the purpose of adjusting the viscosity of the aqueous phase in cosmetics and the like.
　水相増粘剤の具体例としては、ポリビニルアルコール、ポリビニルアセテート、ポリビニルメチルエーテル、ポリビニルピロリドン、ビニルピロリドンとビニルアセテート共重合物、カルボキシビニルポリマー等のビニル系高分子；ポリアクリル酸ナトリウム、ポリエチルアクリレート、ポリアクリル酸アルカノールアミン、アルキルメタクリレートとジメチルアミノエチルメタクリレート共重合物、ポリ２－アクリルアミド－２－メチルプロパンスルホン酸、ポリメタクリロイルオキシトリメチルアンモニウム、（アクリロイルジメチルタウリンアンモニウム／ＶＰ）コポリマー、ジメチルアクリルアミド／アクリロイルジメチルタウリンＮａ）クロスポリマー等のアクリル系高子が挙げられるが、これらに限定されない。 Specific examples of aqueous phase thickeners include polyvinyl alcohol, polyvinyl acetate, polyvinyl methyl ether, polyvinylpyrrolidone, copolymers of vinylpyrrolidone and vinyl acetate, vinyl polymers such as carboxyvinyl polymer; sodium polyacrylate, polyethyl Acrylates, alkanolamine polyacrylates, copolymers of alkyl methacrylates and dimethylaminoethyl methacrylates, poly 2-acrylamido-2-methylpropanesulfonic acid, polymethacryloyloxytrimethylammonium, (acryloyldimethyltaurate ammonium/VP) copolymers, dimethylacrylamide/ Examples include, but are not limited to, acrylic polymers such as acryloyldimethyltaurate Na) crosspolymer.
　ただし、耐塩性の低い増粘剤の中でも、ポリマー鎖の絡み合いによって増粘するタイプの増粘剤に比較して、水相中で水膨潤性のミクロゲルを形成して、膨潤したミクロゲル粒子同士の摩擦により増粘するタイプの増粘剤を用いると、化粧料を肌になじませた際のぬるつきを更に抑制できるので好ましい。これは、例えば、上述した乳化剤として配合している疎水変性アルキルセルロースがポリマー鎖の絡み合いによる増粘作用も有するため、同じ機構で増粘するタイプの増粘剤を更に配合すると、当該増粘作用が助長されてぬるつきの原因となりうるからである。 However, among thickeners with low salt tolerance, compared to thickeners that thicken by entanglement of polymer chains, they form water-swellable microgels in the aqueous phase, and the swollen microgel particles It is preferable to use a type of thickening agent that thickens due to friction because it can further suppress sliminess when the cosmetic is applied to the skin. This is because, for example, the hydrophobically modified alkyl cellulose blended as the emulsifier described above also has a thickening effect due to the entanglement of polymer chains, so if a thickener that thickens by the same mechanism is further blended, the thickening effect is promoted and can cause sliminess.
　本発明の組成物において、水相増粘剤を含む場合のその含有量は、特に限定されず、例えば、０．０５質量％以上、０．１０質量％以上、０．１５質量％以上、０．２０質量％以上、０．２５質量％以上、又は０．３０質量％以上であってよく、また３．０質量％以下、２．０質量％以下、又は１．０質量％以下であってよい。 When the composition of the present invention contains an aqueous phase thickener, its content is not particularly limited. .20% by mass or more, 0.25% by mass or more, or 0.30% by mass or more, and 3.0% by mass or less, 2.0% by mass or less, or 1.0% by mass or less good.
　上述した「その他の成分」以外には、本発明の組成物は、例えばプロピレングリコール、ジプロピレングリコール、１，３－ブチレングリコール、１，４－ブチレングリコール、ジエチレングリコール、トリエチレングリコール、ポリエチレングリコール等のグリコール類；グリセリン、ジグリセリン、ポリグリセリン等のグリセリン類；ソルビトール、マンニトール、マルチトール、キシリトール、エリスリトール等の糖アルコール類；フルクトース、グルコース、ガラクトース、マルトース、ラクトース、トレハロース等の糖類；クロロフィル、β－カロチン等の天然色素；アラビアガム、トラガントガム、ガラクタン、グアガム、キャロブガム、カラヤガム、ジェランガム、カラギーナン等の植物系高分子；キサンタンガム、デキストラン、サクシノグルカン、プルラン等の微生物系高分子；コラーゲン、カゼイン、アルブミン、ゼラチン等の動物系高分子；カルボキシメチルデンプン、メチルヒドロキシプロピルデンプン等のデンプン系高分子；メチルセルロース、エチルセルロース、メチルヒドロキシプロピルセルロース、ヒドロキシエチルセルロース、セルロース硫酸ナトリウム、ヒドロキシプロピルセルロース、カルボキシメチルセルロースナトリウム、結晶セルロース等のセルロース系高分子；アルギン酸ナトリウム、アルギン酸プロピレングリコールエステル等のアルギン酸系高分子；その他の増粘剤；アスコルビン酸リン酸マグネシウム、アスコルビン酸グルコシド、ビタミンＢ６塩酸塩、パントテニルエチルエーテル等のビタミン類；殺菌剤、消炎剤、防腐剤、植物抽出液、アミノ酸等の薬剤；エタノール、イソプロピルアルコール等の低級アルコール;フェノキシエタノール、ベンジルアルコール等の芳香族アルコール；又はシリカ等の化粧料に通常配合されている各種成分も更に含んでよい。 In addition to the "other ingredients" described above, the composition of the present invention may contain, for example, propylene glycol, dipropylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, and the like. Glycols; Glycerols such as glycerin, diglycerin and polyglycerin; Sugar alcohols such as sorbitol, mannitol, maltitol, xylitol and erythritol; Sugars such as fructose, glucose, galactose, maltose, lactose and trehalose; Natural pigments such as carotene; plant-based polymers such as gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, gellan gum, and carrageenan; microbial-based polymers such as xanthan gum, dextran, succinoglucan, and pullulan; collagen, casein, albumin , animal polymers such as gelatin; starch-based polymers such as carboxymethyl starch and methylhydroxypropyl starch; methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, hydroxypropylcellulose, sodium carboxymethylcellulose, crystalline cellulose Cellulose-based polymers such as sodium alginate, alginic acid-based polymers such as propylene glycol alginate; Other thickeners; Vitamins such as magnesium ascorbyl phosphate, ascorbyl glucoside, vitamin B6 hydrochloride, and pantothenyl ethyl ether Bactericides, antiphlogistic agents, antiseptics, plant extracts, amino acids and other drugs; Lower alcohols such as ethanol and isopropyl alcohol; Aromatic alcohols such as phenoxyethanol and benzyl alcohol; Various ingredients may also be included.
　《本発明の組成物の調製》
　本発明の組成物は、水中油型乳化化粧料に通常用いられている方法に従って調製することができる。即ち、水相成分及び油相成分を別々に混合し、水相成分を攪拌しながら油相成分を添加して乳化することによって調製できる。 <<Preparation of the composition of the present invention>>
The composition of the present invention can be prepared according to a method commonly used for oil-in-water emulsified cosmetics. That is, it can be prepared by separately mixing the water phase component and the oil phase component, adding the oil phase component while stirring the water phase component, and emulsifying the water phase component.
　《化粧料》
　本発明の組成物は、化粧料又はその原料として好適に使用することができる。すなわち、本発明は、特に化粧料組成物、より特に日焼け止め用化粧料組成物を提供する。 《Cosmetics》
The composition of the present invention can be suitably used as a cosmetic or its raw material. Thus, the present invention particularly provides a cosmetic composition, more particularly a sunscreen cosmetic composition.
　以下に実施例を挙げて、本発明について更に詳しく説明を行うが、本発明はこれらに限定されるものではない。なお、以下、特に断りのない限り、含有量は質量％で示す。 The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these. Hereinafter, unless otherwise specified, the contents are shown in % by mass.
　下記の表１及び２に示す処方で、実施例及び比較例の組成物を調製した。得られた組成物について、以下の評価を行った。 Compositions of Examples and Comparative Examples were prepared according to the formulations shown in Tables 1 and 2 below. The obtained compositions were evaluated as follows.
　〈１．みずみずしい使用感〉
　みずみずしい使用感について、表１に示されている組成物（すなわち、実施例１及び２、並びに比較例１～５の組成物）と、表２に示されている組成物（すなわち、比較例６～１０の組成物）と、を評価したところ、表１の組成物は、表２の組成物と比べて、みずみずしい使用感が高いことが分かった。表１及び２では、みずみずしい使用感が相対的に高い組成物を「Ａ」と評価し、みずみずしい使用感が相対的に低い組成物を「Ｂ」と評価した。得られた評価結果は、表１の組成物及び表２の組成物の油分の割合に合致していることが分かった。 <1. Refreshing feeling of use>
For a fresh feel, the compositions shown in Table 1 (i.e., the compositions of Examples 1 and 2 and Comparative Examples 1-5) and the compositions shown in Table 2 (i.e., Comparative Example 6 10) and , it was found that the compositions in Table 1 had a fresher feeling when used than the compositions in Table 2. In Tables 1 and 2, a composition with a relatively high fresh feeling in use was evaluated as "A", and a composition with a relatively low fresh feeling in use was evaluated as "B". It was found that the obtained evaluation results corresponded to the oil content ratios of the composition in Table 1 and the composition in Table 2.
　なお、表１に示されている各組成物の油分の含有量は、いずれも１８質量％である。これに対して、表２に示されている各組成物の油分の含有量は、いずれも２８質量％である。 The oil content of each composition shown in Table 1 is 18% by mass. On the other hand, the oil content of each composition shown in Table 2 is 28% by mass.
　〈２．白さの評価〉
　実施例及び比較例の各組成物を、Ｓプレート（５×５ｃｍのＶ溝ＰＭＭＡ板、ＳＰＦＭＡＳＴＥＲ－ＰＡ０１、資生堂医理科テクノロジー社製）に塗布し、乾燥させた後に、可視光領域（４０１～５００ｎｍ）における吸光度を透過光について測定し、それぞれの結果を表１及び２に示す。なお、得られた吸光度の値は、全てブランクの吸光度を引いた値であり、かつこれらの表においては、分散剤を用いていない比較例１、２及び６の吸光度を基準として、異なる種類の分散剤を用いた各実施例及び比較例の吸光度を評価した。 <2. Evaluation of Whiteness>
Each composition of Examples and Comparative Examples was applied to an S plate (5 x 5 cm V-groove PMMA plate, SPFMASTER-PA01, manufactured by Shiseido Irika Technology Co., Ltd.), dried, and exposed to visible light region (401 to 500 nm ) were measured in transmitted light and the respective results are shown in Tables 1 and 2. The obtained absorbance values are all values obtained by subtracting the absorbance of the blank, and in these tables, the absorbance of Comparative Examples 1, 2 and 6, which do not use a dispersant, is used as a reference, and different types of The absorbance of each example and comparative example using a dispersant was evaluated.
　より具体的には、評価対象の組成物の可視光領域での吸光度が、基準の組成物の可視光領域での吸光度よりも小さいことは、肌への塗布後に紫外線散乱剤に由来する白さが目立ってしまう問題が改善されたことを示唆し、表１及び２においては、これを「Ａ」としている。また、評価対象の組成物の可視光領域での吸光度が、基準の組成物の可視光領域での吸光度よりも大きいことは、肌への塗布後に紫外線散乱剤に由来する白さが目立ってしまう問題が改善されていないことを示唆し、表１及び２においては、これを「Ｂ」としている。 More specifically, the fact that the absorbance in the visible light region of the composition to be evaluated is less than the absorbance in the visible light region of the reference composition indicates that the whiteness derived from the UV scattering agent after application to the skin. In Tables 1 and 2, this is indicated as "A". In addition, if the absorbance in the visible light region of the composition to be evaluated is greater than the absorbance in the visible light region of the reference composition, the whiteness derived from the UV scattering agent will be noticeable after application to the skin. In Tables 1 and 2 this is labeled "B", suggesting that the problem has not improved.
　なお、表１及び表２において、比較例１の組成物を「基準の組成物」として、実施例１の組成物について評価し、比較例２の組成物を「基準の組成物」として、実施例２及び比較例３～５の組成物を評価し、比較例６の組成物を「基準の組成物」として、比較例６～１０を評価した。後述する「３．紫外線防御効果の評価」においても同様である。 In Tables 1 and 2, the composition of Comparative Example 1 was used as the "reference composition", the composition of Example 1 was evaluated, and the composition of Comparative Example 2 was used as the "reference composition". The compositions of Example 2 and Comparative Examples 3 to 5 were evaluated, and Comparative Examples 6 to 10 were evaluated using the composition of Comparative Example 6 as the "reference composition". The same applies to "3. Evaluation of UV protection effect" described later.
　〈３．紫外線防御効果の評価〉
　実施例及び比較例の組成物を、Ｓプレート（５×５ｃｍのＶ溝ＰＭＭＡ板、ＳＰＦＭＡＳＴＥＲ－ＰＡ０１、資生堂医理科テクノロジー社製）に塗布し、乾燥させた後に、紫外光領域（２８０～４００ｎｍ）における吸光度を測定し、それぞれの結果を表１及び２に示す。なお、得られた吸光度の値は、全てブランクの吸光度を引いた値であり、かつこれらの表においては、分散剤を用いていない比較例１、２及び６の吸光度を基準として、異なる種類の分散剤を用いた各実施例及び比較例の吸光度を評価した。 <3. Evaluation of UV Protection Effect>
The compositions of Examples and Comparative Examples were applied to an S plate (5 x 5 cm V-groove PMMA plate, SPFMASTER-PA01, manufactured by Shiseido Irika Technology Co., Ltd.), dried, and exposed to ultraviolet light (280 to 400 nm). was measured and the results are shown in Tables 1 and 2, respectively. The obtained absorbance values are all values obtained by subtracting the absorbance of the blank, and in these tables, the absorbance of Comparative Examples 1, 2 and 6, which do not use a dispersant, is used as a reference, and different types of The absorbance of each example and comparative example using a dispersant was evaluated.
　より具体的には、評価対象の組成物の紫外光領域で吸光度が、基準の組成物の紫外光領域での吸光度よりもが大きいことは、紫外線防御効果が向上されていることを示唆し、表１及び２においては、これを「Ａ」としている。また、評価対象の組成物の紫外光領域で吸光度が、基準の組成物の紫外光領域での吸光度よりもが小さいことは、紫外線防御効果が低下していることを示唆し、表１及び２においては、これを「Ｂ」としている。 More specifically, the absorbance in the ultraviolet light region of the composition to be evaluated is greater than the absorbance in the ultraviolet light region of the reference composition, suggesting that the UV protection effect is improved. In Tables 1 and 2, this is designated as "A". In addition, the fact that the absorbance in the ultraviolet light region of the composition to be evaluated is smaller than the absorbance in the ultraviolet light region of the reference composition suggests that the UV protection effect is reduced, Tables 1 and 2 , this is referred to as "B".
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000004
Figure JPOXMLDOC01-appb-T000004
　表１及び２から明らかなように、実施例１及び２の組成物は、みずみずしい使用感と高い紫外線防御効果とを兼備し、かつ肌への塗布後に紫外線散乱剤に由来する白さが目立ってしまう問題が改善されていることが分かった。 As is clear from Tables 1 and 2, the compositions of Examples 1 and 2 have both a fresh feeling of use and a high UV protection effect, and after application to the skin, the whiteness derived from the UV scattering agent is conspicuous. It turns out that the problem of being stuck has been improved.
　これに対して、比較例６～１０の組成物は、みずみずしい使用感は、実施例１及び２の組成物に比べて、相対的に低いことが分かった。 On the other hand, it was found that the compositions of Comparative Examples 6 to 10 had a relatively low fresh feel compared to the compositions of Examples 1 and 2.
　更に、表２に示す比較例６～１０の結果からは、油分に対する紫外線散乱剤の割合が相対的に多くなく（油分１００質量部に対して５４質量部）、かつ油分に対する極性油の割合が相対的に多くない（油分の４６質量％が極性油である）場合では、ポリヒドロキシステアリン酸による白さ問題の改善は、他の分散剤の場合と同程度であることが分かった。すなわち、比較例６～１０のような構成では、ポリヒドロキシステアリン酸による白さ問題の改善に対して、特異性は見られなかった。 Furthermore, from the results of Comparative Examples 6 to 10 shown in Table 2, the ratio of the ultraviolet scattering agent to the oil is relatively low (54 parts by mass with respect to 100 parts by mass of the oil), and the ratio of the polar oil to the oil is In the relatively modest case (46% by weight of the oil is polar oil), polyhydroxystearic acid was found to improve whiteness problems to the same extent as other dispersants. That is, in the compositions of Comparative Examples 6 to 10, no specificity was observed with respect to improvement of the whiteness problem by polyhydroxystearic acid.
　〈処方例〉
　以下では、本発明の組成物を用いる化粧料の処方例を挙げるが、本発明は、これらの例示の処方例によって限定されるものではない。 <Prescription example>
Hereinafter, formulation examples of cosmetics using the composition of the present invention will be given, but the present invention is not limited by these illustrative formulation examples.
Figure JPOXMLDOC01-appb-T000005
Figure JPOXMLDOC01-appb-T000005
Figure JPOXMLDOC01-appb-T000006
Figure JPOXMLDOC01-appb-T000006
Figure JPOXMLDOC01-appb-T000007
Figure JPOXMLDOC01-appb-T000007
Figure JPOXMLDOC01-appb-T000008
Figure JPOXMLDOC01-appb-T000008
Figure JPOXMLDOC01-appb-T000009
Figure JPOXMLDOC01-appb-T000009
Figure JPOXMLDOC01-appb-T000010
Figure JPOXMLDOC01-appb-T000010

Claims (9)

  1. 　下記成分（ａ）～（ｃ）を含む水中油型乳化組成物、特に化粧料組成物であって：
    　（ａ）紫外線散乱剤、
    　（ｂ）ポリヒドロキシステアリン酸、及び
    　（ｃ）油分、
    　前記紫外線散乱剤が、前記油分中に分散されており、
    　前記紫外線散乱剤が、前記油分１００質量部に対して、５０質量部以上であり、かつ
    　前記油分の５５質量％以上が、極性油である、
    組成物。     An oil-in-water emulsion composition, particularly a cosmetic composition, comprising the following components (a) to (c):
    (a) an ultraviolet scattering agent;
    (b) polyhydroxystearic acid, and (c) oil,
    The ultraviolet scattering agent is dispersed in the oil,
    The ultraviolet scattering agent is 50 parts by mass or more with respect to 100 parts by mass of the oil, and 55% by mass or more of the oil is a polar oil.
    Composition.
  2. 　前記紫外線散乱剤の含有量が、５．０質量％以上である、請求項１に記載の組成物。 The composition according to claim 1, wherein the content of the ultraviolet scattering agent is 5.0% by mass or more.
  3. 　前記油分の含有量が、２０質量％以下である、請求項１又は２に記載の組成物。 The composition according to claim 1 or 2, wherein the oil content is 20% by mass or less.
  4. 　前記ポリヒドロキシステアリン酸が、前記紫外線散乱剤１００質量部に対して、３．０質量部以上１０質量部以下である、請求項１～３のいずれか一項に記載の組成物。 The composition according to any one of claims 1 to 3, wherein the polyhydroxystearic acid is 3.0 parts by mass or more and 10 parts by mass or less with respect to 100 parts by mass of the ultraviolet scattering agent.
  5. 　前記極性油が、前記油分の８０質量％以上である、請求項１～４のいずれか一項に記載の組成物。 The composition according to any one of claims 1 to 4, wherein the polar oil accounts for 80% by mass or more of the oil content.
  6. 　前記極性油が、紫外線吸収剤を含む、請求項１～５のいずれか一項に記載の組成物。 The composition according to any one of claims 1 to 5, wherein the polar oil contains an ultraviolet absorber.
  7. 　（ｄ）乳化剤を更に含む、請求項１～６のいずれか一項に記載の組成物。 (d) The composition according to any one of claims 1 to 6, further comprising an emulsifier.
  8. 　（ｅ）水相増粘剤を更に含む、請求項１～７のいずれか一項に記載の組成物。 The composition according to any one of claims 1 to 7, further comprising (e) an aqueous phase thickening agent.
  9. 　日焼け止め用化粧料組成物である、請求項１～８のいずれか一項に記載の組成物。 The composition according to any one of claims 1 to 8, which is a sunscreen cosmetic composition.
PCT/JP2022/027451 2021-07-14 2022-07-12 Oil-in-water emulsion composition WO2023286780A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202280042562.5A CN117479918A (en) 2021-07-14 2022-07-12 Oil-in-water emulsion composition
JP2023534822A JPWO2023286780A1 (en) 2021-07-14 2022-07-12

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021116723 2021-07-14
JP2021-116723 2021-07-14

Publications (1)

Publication Number Publication Date
WO2023286780A1 true WO2023286780A1 (en) 2023-01-19

Family

ID=84919441

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/027451 WO2023286780A1 (en) 2021-07-14 2022-07-12 Oil-in-water emulsion composition

Country Status (3)

Country Link
JP (1) JPWO2023286780A1 (en)
CN (1) CN117479918A (en)
WO (1) WO2023286780A1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011225531A (en) * 2010-03-31 2011-11-10 Kose Corp Oil-in-water type emulsified cosmetic
JP2014080377A (en) * 2012-10-12 2014-05-08 Kose Corp Oil-in-water type emulsion cosmetic
JP2016135751A (en) * 2015-01-23 2016-07-28 株式会社コーセー Oil-in-water type emulsion cosmetic
JP2017088599A (en) * 2015-11-04 2017-05-25 株式会社コーセー Composition
JP2017137300A (en) * 2016-01-29 2017-08-10 株式会社コーセー Oil-in-water type emulsion cosmetic
WO2020090874A1 (en) * 2018-11-01 2020-05-07 株式会社コーセー Emulsified cosmetic and method for producing same
WO2020106039A1 (en) * 2018-11-19 2020-05-28 솔브레인 주식회사 Ultraviolet shielding agent composition comprising cerium oxide particles having surface modified with polyhydroxystearic acid
JP2021017426A (en) * 2019-07-23 2021-02-15 ちふれホールディングス株式会社 Oil-in-water type emulsion cosmetic and method for producing the same

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011225531A (en) * 2010-03-31 2011-11-10 Kose Corp Oil-in-water type emulsified cosmetic
JP2014080377A (en) * 2012-10-12 2014-05-08 Kose Corp Oil-in-water type emulsion cosmetic
JP2016135751A (en) * 2015-01-23 2016-07-28 株式会社コーセー Oil-in-water type emulsion cosmetic
JP2017088599A (en) * 2015-11-04 2017-05-25 株式会社コーセー Composition
JP2017137300A (en) * 2016-01-29 2017-08-10 株式会社コーセー Oil-in-water type emulsion cosmetic
WO2020090874A1 (en) * 2018-11-01 2020-05-07 株式会社コーセー Emulsified cosmetic and method for producing same
WO2020106039A1 (en) * 2018-11-19 2020-05-28 솔브레인 주식회사 Ultraviolet shielding agent composition comprising cerium oxide particles having surface modified with polyhydroxystearic acid
JP2021017426A (en) * 2019-07-23 2021-02-15 ちふれホールディングス株式会社 Oil-in-water type emulsion cosmetic and method for producing the same

Also Published As

Publication number Publication date
JPWO2023286780A1 (en) 2023-01-19
CN117479918A (en) 2024-01-30

Similar Documents

Publication Publication Date Title
JP6279457B2 (en) Oil-in-water emulsified cosmetic
US11077048B2 (en) Oil-in-water emulsion cosmetic
JP7346660B2 (en) Composition containing polyion complex particles and oil
US10729631B2 (en) Oil-in-water emulsion composition
US11529293B2 (en) Oil-in-water emulsion cosmetic
US11266591B2 (en) Oil-in-water type emulsion cosmetic
US10300008B2 (en) Water-based cosmetic
FR2882651A1 (en) Filtering fluid composition, useful e.g. for the preparation of a skin care product and skin make-up product, comprises a wetting agent, a hydrophilic gelling agent and an emulsifying surface-active agent
WO2023286780A1 (en) Oil-in-water emulsion composition
JP7370820B2 (en) oil-in-water composition
WO2020179457A1 (en) Cosmetic emulsion for self-tanning
WO2022172799A1 (en) Oil-in-water emulsion cosmetic
WO2022168839A1 (en) Composition
TWI689316B (en) Oil-in-water emulsion cosmetics
WO2024034394A1 (en) Oil-in-water emulsion-type cosmetic composition
WO2023063104A1 (en) Cosmetic composition

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22842123

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 202280042562.5

Country of ref document: CN

Ref document number: 2023534822

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE