Oil-based dispersion and cosmetic containing the same

Abstract

To provide an oil-based dispersion and a cosmetic capable of improving dispersion of a metal oxide while maintaining cosmetic durability.SOLUTION: An oil-based dispersion contains the following components (A) to (D): (A) a silicone polyurethane, (B) a fine particulate metal oxide, (C) a pigment-grade metal oxide, and (D) a silicone oil, wherein a content of the component (D) is 40 mass% or more relative to a total amount of oil agents contained in the oil-based dispersion.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to an oily dispersion and a cosmetic preparation containing the oily dispersion. [Background technology]

[0002] Metal oxides such as titanium oxide are widely used as white pigments in cosmetics, and fine particle metal oxides are used as UV protection agents in UV protective cosmetics, etc. However, metal oxides have strong coagulation forces, and fine particle metal oxides in particular have extremely high coagulation properties, making it difficult to disperse them uniformly in cosmetics.

[0003] To solve the above problems, for example, Patent Document 1 discloses a technology in which an oil dispersion containing fine iron oxide particles, silicone oil, and a surfactant is blended with 15% by mass of a silicone surfactant and subjected to a strong dispersion treatment to highly disperse the fine iron oxide particles in the silicone oil.

[0004] However, when such a large amount of surfactant is used, sebum and the like are easily incorporated into the cosmetic film formed after application to the skin, which reduces the dispersion stability of the metal oxide and reduces the UV protection effect and color retention. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-99686 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an oil-based dispersion and a cosmetic in which the dispersibility of metal oxides is improved without impairing the cosmetic durability. [Means for solving the problem]

[0007] As a result of extensive research to solve the above problems, the present inventors discovered that silicone polyurethane functions as an excellent dispersant for metal oxides in a dispersion medium containing silicone oil, and thus completed the present invention.

[0008] The means for solving the above problems include the following aspects. [1] The following components (A) to (D): (A) Silicone polyurethane (B) Particulate metal oxide (C) Pigment-grade metal oxides (D) Silicone oil An oil dispersion comprising: An oil-based dispersion, wherein the content of the component (D) relative to the total amount of oil contained in the oil-based dispersion is 40 mass % or more. [2] The oil dispersion according to [1], wherein the component (B) contains a fine particle metal oxide that has not been surface-treated. [3] The oil dispersion according to [1] or [2], wherein the mass ratio of the total content of components (B) and (C) to component (A) [(B) + (C) / (A)] is 1 to 150. [4] The oil-based dispersion according to any one of [1] to [3], wherein the component (D) contains a volatile silicone oil. [5] A cosmetic preparation containing the oily dispersion according to any one of [1] to [4]. [6] The cosmetic according to [5], which is an oil-based cosmetic. [7] The cosmetic according to [5], which is a water-in-oil emulsion cosmetic. [8] The water-in-oil emulsion cosmetic according to [7], wherein the surfactant content of the total amount of the water-in-oil emulsion cosmetic is less than 2 mass%. [9] The following components (A) to (D): (A) Silicone polyurethane (B) Particulate metal oxide (C) Pigment-grade metal oxides (D) Silicone oil The method for producing an oil-based dispersion comprising the steps of: dispersing component (A) in component (D) to obtain a silicone polyurethane gel; dispersing the component (B) and the component (C) in the silicone polyurethane gel; A method for producing an oil-based dispersion comprising:

[10] A dispersant for component (B) fine particle metal oxide and / or component (C) pigment-grade metal oxide in a dispersing medium containing component (D) silicone oil, the dispersing medium comprising component (A) silicone polyurethane as an active ingredient. [Effects of the Invention]

[0009] The oil dispersion of the present invention and cosmetics containing the oil dispersion are excellent in UV protection effect, UV protection effect durability against sebum, and color durability. Furthermore, cosmetics containing metal oxides generally spread repeatedly in one direction on the skin, and when a cosmetic film is formed, they suddenly become heavy and tend to feel uncomfortable, but the oil dispersion of the present invention and cosmetics containing the oil dispersion spread smoothly even when stopped during application, and are also excellent in feel during use. DETAILED DESCRIPTION OF THE INVENTION

[0010] The present invention will be described in detail below. The following description of the present invention may be based on preferred embodiments of the present invention, but the present invention is not limited to such embodiments. In this specification, unless otherwise specified, the symbol "to" indicating a range of values ​​is used to mean that the values ​​before and after it are included as the lower and upper limits.

[0011] [Component (A) Silicone Polyurethane] The oil-based dispersion of the present invention contains component (A) silicone polyurethane. Component (A) may be, for example, a silicone polyurethane represented by the following formula (1): OCN-R 1 -NCO (1) (In the formula, R 1 represents an alkylene group having 2 to 9 carbon atoms. A structural unit based on an isocyanate compound represented by the formula: The following formula (2)-1 or (2)-2 [ka] (wherein N is an integer of 1 to 100, R 2 represents a linear or branched alkylene group having 1 to 20 carbon atoms which may have an ether bond. and a structural unit based on a silicone polyol represented by the formula: The following formula (3) HO-R 3 -OH (3) (In the formula, R 3 represents a linear or branched alkylene group having 2 to 9 carbon atoms which may have an ether bond. and a silicone polyurethane having a structural unit based on alkylene glycol represented by the following formula:

[0012] The following formula (1) OCN-R 1 -NCO (1) In R 1 represents an alkylene group having 2 to 9 carbon atoms, and the alkylene may be linear or branched, but is preferably linear. Examples of the alkylene group having 2 to 9 carbon atoms include ethylene, N-propylene, N-butylene, N-pentylene, and N-hexylene. Examples of the isocyanate compound represented by the above formula (1) include 1,4-tetramethylene diisocyanate, 1,5-pentamethylene diisocyanate, and 1,6-hexamethylene diisocyanate. Among these, 1,6-hexamethylene diisocyanate represented by the following formula (4) is preferred from the viewpoint of the dispersibility of the metal oxide, etc. [ka]

[0013] The following formula (2)-1 or (2)-2 [ka] In the silicone polyol represented by the formula, N is an integer of 1 to 100, and from the viewpoint of the elasticity and recovery of the gel formed and the flexibility of the film, it is preferably 25 to 75, and more preferably 40 to 75. 2 represents a linear or branched alkylene group having 1 to 20 carbon atoms, which may have an ether bond; specific examples include 2-oxabutane-1,4-diyl, 2-oxahexane-1,6-diyl, and 3-oxahexane-1,6-diyl groups. Among these, the 3-oxahexane-1,6-diyl group is preferred from the viewpoint of terminal reactivity. There are no particular restrictions on the weight-average molecular weight, but from the viewpoint of the dispersibility of the metal oxide, it is preferably 1,500 to 15,000, more preferably 4,000 to 11,000, and even more preferably 6,000 to 11,000. In this specification, "weight-average molecular weight" refers to a value measured by gel permeation chromatography (GPC) (polystyrene equivalent value).

[0014] The following formula (3) HO-R 3 -OH (3) In the alkylene glycol represented by the formula 3 represents a linear or branched alkylene group having 2 to 9 carbon atoms which may have an ether bond, and specific examples thereof include ethylene glycol, propylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, diethylene glycol, triethylene glycol, dipropylene glycol, tripropylene glycol, etc. Among these, ethylene glycol represented by the following formula (5) is preferred from the viewpoint of the dispersibility of metal oxides, etc. [ka]

[0015] The method for producing component (A) is not particularly limited, but examples include a method in which an isocyanate compound (1) is reacted with a silicone polyol (2)-1 or (2)-2 to obtain a polyurethane prepolymer represented by the following formula (6)-1 or (6)-2 (hereinafter sometimes referred to as "polyurethane prepolymer (6)-1 or (6)-2"), and then this polyurethane prepolymer (6)-1 or (6)-2 is subjected to a polyaddition reaction with an alkylene glycol (3). [ka] In the above formula, R 1 and N have the same meaning as above, and R 1 represents an alkylene group having 2 to 9 carbon atoms, and N represents an integer of 1 to 100. Furthermore, M represents an integer of 1 to 7, and from the viewpoint of the dispersibility of the metal oxide, it is preferably 1 to 3, and more preferably 1 or 2.

[0016] When the isocyanate compound (1) is reacted with the silicone polyol (2)-1 or (2)-2 to obtain the polyurethane prepolymer (6)-1 or (6)-2, the molar ratio of the silicone polyol (2)-1 or (2)-2 to the isocyanate compound (1) (silicone polyol (2)-1 / isocyanate compound (1)) or (silicone polyol (2)-2 / isocyanate compound (1)) is preferably 0.33 to 1.5, more preferably 0.33 to 1.35, and even more preferably 0.33 to 1.2, from the viewpoint of the dispersibility of the metal oxide. The weight-average molecular weight of the polyurethane prepolymer (6)-1 or (6)-2 is preferably 2,000 to 30,000, more preferably 4,000 to 20,000, and even more preferably 4,000 to 15,000.

[0017] Polymerization of alkylene glycol (3) with the polyurethane prepolymer (6)-1 or (6)-2 gives the silicone polyurethane of the present invention represented by the following formula (7)-1 or (7)-2, and from the viewpoint of the dispersibility of the metal oxide, the weight-average molecular weight thereof is preferably 10,000 to 300,000, more preferably 20,000 to 200,000, and even more preferably 30,000 to 100,000. When the weight-average molecular weight of the silicone polyurethane is less than 100,000, the molar ratio of silicone polyol (2)-1 or (2)-2 to ethylene glycol (3) (silicone polyol (2)-1 / ethylene glycol (3)) or (silicone polyol (2)-2 / ethylene glycol (3)) is preferably 4 or less, more preferably 2 or less, and even more preferably 1 or less. On the other hand, when the weight-average molecular weight of the silicone polyurethane is 100,000 or more, the molar ratio (silicone polyol (2)-1 / ethylene glycol (3)) or (silicone polyol (2)-2 / ethylene glycol (3)) is preferably 6 or less, more preferably 4 or less, and even more preferably 2 or less, with the lower limit preferably being 1 or more. The most preferred combination of weight-average molecular weight and molar ratio is a weight-average molecular weight of 30,000 to 100,000, and a molar ratio of silicone polyol (2)-1 or (2)-2 to ethylene glycol (3) (silicone polyol (2)-1 / ethylene glycol (3)) or (silicone polyol (2)-2 / ethylene glycol (3)) of 0.3 to 0.7. [ka] In the above formula, R 1 , R 3 , R and S have the same meanings as above. Furthermore, (X) used in the above formula (7)-1 means the repeating unit shown in (6)-1, and (Y) used in the above formula (7)-2 means the repeating unit shown in (6)-2. R represents an integer of 1 to 3, preferably 1 or 2, and more preferably 2. Furthermore, S represents an integer of 1 to 50, preferably 2 to 10, and more preferably 5 to 10.

[0018] Preferred embodiments of component (A) include those represented by the following formula (8)-1 or (8)-2. [ka]

[0019] Component (A) can also be obtained by polymerizing an isocyanate compound (1), a silicone polyol (2)-1 or (2)-2, and an alkylene glycol (3). In this case, the molar ratio of each component may be the same as described above.

[0020] It is presumed that component (A) forms multiple ring-shaped clusters (clusters) by association between the hydrophilic parts in the molecule based on alkylene glycol (3), and that the hydrophobic parts in the molecule based on isocyanate compound (1) and silicone polyol (2)-1 or (2)-2 come into contact with the oil, thereby contributing to improved dispersibility of the metal oxide.

[0021] Component (A) can be made compatible with an oil to form a silicone polyurethane gel. For example, a silicone polyurethane gel can be obtained by polymerizing the silicone polyurethane in the oil or by premixing component (A) with the oil. Specifically, for example, an isocyanate compound (1) can be reacted with a silicone polyol (2)-1 or (2)-2 in the oil to obtain a polyurethane prepolymer (6)-1 or (6)-2, and then this polyurethane prepolymer (6)-1 or (6)-2 can be subjected to a polyaddition reaction with an alkylene glycol (3), thereby obtaining a silicone polyurethane gel. Alternatively, a silicone polyurethane gel can be obtained by uniformly mixing silicone polyol (2)-1 or (2)-2 with alkylene glycol (3), and then adding isocyanate compound (1) to cause the reaction.

[0022] As the oil agent, hydrocarbon oil, ester oil, fats and oils, silicone oil, fluorine-based oil, etc. can be used regardless of the origin of animal oil, vegetable oil, synthetic oil, etc. Among these, silicone oil and hydrocarbon oil are preferred, and silicone oil is more preferred, from the viewpoint of dispersibility of metal oxide, etc. Specifically, silicone oil includes dimethylpolysiloxane, cyclomethicone, methylphenylpolysiloxane, diphenylpolysiloxane, methyltrimethicone, caprylylmethicone, trifluoropropylcyclotetrasiloxane, trifluoropropylcyclopentasiloxane, etc., and hydrocarbon oil includes liquid paraffin, squalane, polybutene, polyisobutylene, undecane, tridecane, isododecane, (C13-15) alkane, etc., and these can be used alone or in combination of two or more.

[0023] The content of component (A) is not particularly limited, but from the viewpoints of UV protection effect, UV protection effect against sebum, color durability against sebum, and smoothness at the end of application, it is preferably 0.1 to 15 mass% (hereinafter simply abbreviated as "%") of the total amount of the oil dispersion, more preferably 0.5 to 10%, and even more preferably 1 to 5%.

[0024] [Component (B) Fine particle metal oxide] The oil dispersion of the present invention contains component (B) a fine particle metal oxide. In this specification, "fine particles" means particles having an average particle diameter of less than 100 nm. The average particle diameter can be measured, for example, by observing the surface condition using a scanning electron microscope (JEOL, JSM-7800PRIME) and measuring 1,000 particles using an image analyzer (Luzex AP, Nireco Corporation) to determine the number average value (D50).

[0025] Component (B) is not particularly limited in terms of shape (e.g., spherical, ellipsoidal, plate-like, needle-like, spindle-like, etc.) or structure (e.g., porous, non-porous, etc.) as long as it is one commonly used in cosmetics. The type is also not particularly limited, and examples include aluminum oxide, magnesium oxide, tin oxide, zinc oxide, titanium oxide, cerium oxide, zirconium oxide, iron oxide, etc., and one or more of these can be used. Of these, from the viewpoint of ultraviolet protection effect, etc., it is preferable to use zinc oxide or titanium oxide, and it is more preferable to use zinc oxide. Furthermore, component (B) may be surface-treated, in part or in whole, with a treatment agent. Examples of the treatment agent include one or more of fluorine compounds, silicone compounds, fatty acids or salts thereof, acylated amino acids or salts thereof, lecithin, hydrogenated lecithin, collagen, hydrocarbons, higher alcohols, esters, waxes, surfactants, etc. Among these, it is preferable to use a fine particle metal oxide whose surface is untreated, from the viewpoints of UV protection effect, durability of UV protection effect against sebum, color durability against sebum, etc. The content of the fine particle metal oxide whose surface is not entirely surface-treated relative to the total amount of component (B) fine particle metal oxide is not particularly limited, but is, for example, preferably 50% or more, more preferably 70% or more, and even more preferably 90% or more.

[0026] Commercially available examples of component (B) include zinc oxide products such as MZ-500 (untreated, average particle size 25 nm), MZ-500HP (treated with hydrous silica, average particle size 25 nm), and MZY-505M (treated with dimethicone, average particle size 25 nm) (all manufactured by Teika Corporation); and titanium oxide products such as MT-05 (untreated, average particle size 10 nm) and SMT-500SAM (treated with dimethicone, hydrous silica, and aluminum hydroxide, average particle size 35 nm) (all manufactured by Teika Corporation).

[0027] The average particle size of component (B) is not particularly limited in terms of its lower limit, but from the viewpoint of UV protection effect, it is preferably 5 nm or more, more preferably 10 nm or more, and even more preferably 15 nm or more. The upper limit is less than 100 nm, more preferably 50 nm or less, and even more preferably 30 nm or less. The range is preferably 5 nm or more and less than 100 nm, more preferably 10 to 50 nm, and even more preferably 15 to 30 nm.

[0028] The content of component (B) is not particularly limited, and from the viewpoints of UV protection effect, smooth application, etc., the lower limit of the total amount of oil-based dispersion is preferably 1% or more, more preferably 3% or more, and even more preferably 5% or more. The upper limit is preferably 50% or less, more preferably 45% or less, and even more preferably 40% or less. The range is preferably 1 to 50%, more preferably 3 to 45%, and even more preferably 5 to 40%.

[0029] [Component (C) Pigment-grade metal oxide] The oil dispersion of the present invention contains component (C), a pigment-grade metal oxide. In this specification, "pigment-grade" means one having an average particle size of 100 nm or more.

[0030] Component (C) is not particularly limited in terms of shape (e.g., spherical, ellipsoidal, plate-like, needle-like, spindle-like, etc.) or structure (e.g., porous, non-porous, etc.), as long as it is one commonly used in cosmetics. The type is also not particularly limited, and examples include aluminum oxide, magnesium oxide, tin oxide, zinc oxide, titanium oxide, cerium oxide, zirconium oxide, iron oxide, etc., and one or more of these can be used. Of these, iron oxide, titanium oxide, zinc oxide, etc. are preferably used from the viewpoint of cosmetic durability, etc. Component (C) may have a surface treated in part or in its entirety with a treatment agent. Examples of treatment agents include those described above as treatment agents for component (B). Among these, from the viewpoints of UV protection effect, durability of UV protection effect against sebum, and color durability against sebum, it is preferable to contain a pigment-grade metal oxide whose entire surface is not surface-treated. The content of the pigment-grade metal oxide whose entire surface is not surface-treated relative to the total amount of component (C) pigment-grade metal oxide is not particularly limited, but is, for example, preferably greater than 0%, more preferably 25% or more, and even more preferably 50% or more.

[0031] Commercially available examples of component (C) include, as iron oxides, Tarox BL-100P (no surface treatment), Tarox R-516P (no surface treatment), Tarox YP-1200P (no surface treatment) (all manufactured by Titanium Kogyo Co., Ltd.), PGQ BLACK NO. 710P (treated with polyglyceryl tetraisostearate-2), PGQ RED NO. 211P (treated with polyglyceryl tetraisostearate-2), PGQ RED NO. 216P (treated with polyglyceryl tetraisostearate-2), PGQ YELLOW YP-1200P (treated with polyglyceryl tetraisostearate-2); and as titanium oxide, PGQ TIO2 R250 (treated with polyglyceryl tetraisostearate-2, average particle size 250 nm) (all manufactured by Daito Kasei Kogyo Co., Ltd.).

[0032] The average particle size of component (C) is not particularly limited, with a lower limit of 100 nm or more, preferably 120 nm or more, and more preferably 150 nm or more. The upper limit is preferably 1000 nm or less, more preferably 500 nm or less, and even more preferably 300 nm or less. The range is preferably 100 to 1000 nm, more preferably 120 to 500 nm, and even more preferably 150 to 300 nm. The average particle size can be measured, for example, by observing the surface condition using a scanning electron microscope (JEOL Ltd., JSM-7800PRIME) and measuring 1000 particles using an image analyzer (Luzex AP, Nireco Corporation) to determine the number average value (D50).

[0033] The content of component (C) is not particularly limited, and the lower limit is preferably 1% or more, more preferably 5% or more, and even more preferably 10% or more, based on the total amount of the oil-based dispersion. The upper limit is preferably 35% or less, more preferably 25% or less, and even more preferably 15% or less. The range is preferably 1 to 35%, more preferably 5 to 25%, and even more preferably 10 to 15%.

[0034] The mass ratio of the total content of components (B) and (C) to component (A), [(B) + (C)] / (A), is not particularly limited, and is preferably 1 to 150, more preferably 3 to 50, and even more preferably 6 to 20, from the viewpoint of smooth application at the end of application.

[0035] [Component (D) Silicone oil] The oil-based dispersion of the present invention contains component (D), a silicone oil. Component (D) is not particularly limited as long as it is one commonly used in cosmetics. Examples include volatile silicone oils such as dimethylpolysiloxane (kinematic viscosity at 25°C less than 6 CS), decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, dodecamethylcyclohexasiloxane, methyltrimethicone, decamethyltetrasiloxane, and ethyltrisiloxane; and non-volatile silicone oils such as dimethylpolysiloxane (kinematic viscosity at 25°C 6 CS or more) and phenyl-modified polysiloxane. One or more of these can be used. In this specification, "volatile" means that the boiling point at normal pressure (1 atmosphere) is 260°C or less. "Non-volatile" means that the boiling point at normal pressure (1 atmosphere) is higher than 260°C. Of these, from the viewpoint of compatibility with component (A), etc., component (D) preferably contains a volatile silicone oil. The content of the volatile silicone oil relative to the total amount of component (D) silicone oil is not particularly limited, but is, for example, preferably more than 0%, more preferably 50% or more, and even more preferably 80% or more. The kinematic viscosity of component (D) is not particularly limited, but from the viewpoint of usability when made into a cosmetic, the kinematic viscosity at 25°C is preferably 100 CS or less, more preferably 50 CS or less, and even more preferably 20 CS or less.

[0036] Commercially available examples of component (D) include volatile silicone oils such as KF-96L-2CS (dimethylpolysiloxane), KF-96L-1.5CS (decamethyltetrasiloxane), and KF-96A-1CS (octamethyltrisiloxane) (all manufactured by Shin-Etsu Chemical Co., Ltd.); and non-volatile silicone oils such as KF-96A-6CS (dimethylpolysiloxane), KF-96A-10CS (dimethylpolysiloxane), KF-56A (methylphenylpolysiloxane), and KF-54 (methylphenylpolysiloxane) (all manufactured by Shin-Etsu Chemical Co., Ltd.).

[0037] The content of component (D) is not particularly limited, and from the viewpoints of UV protection effect, durability of UV protection effect against sebum, color durability against sebum, and smoothness at the end of application, the lower limit of the total amount of oil dispersion is preferably 5% or more, more preferably 10% or more, and even more preferably 20% or more. The upper limit is preferably 55% or less, more preferably 50% or less, and even more preferably 45% or less. The range is preferably 5 to 55%, more preferably 10 to 50%, and even more preferably 20 to 45%.

[0038] The content of component (D) is 40% or more of the total amount of oil contained in the oil dispersion, and from the viewpoints of UV protection effect, durability of the UV protection effect against sebum, color durability against sebum, and smoothness at the end of application, it is preferably 50% or more, more preferably 70% or more, even more preferably 90% or more, and particularly preferably 100%.

[0039] The oil dispersion of the present invention may contain other optional components within the scope of not impairing the effects of the present invention, such as powders other than components (B) and (C), oils other than component (D), surfactants, etc.

[0040] The powder is anything other than the above components (B) and (C), and examples thereof include carbon black, chromium hydroxide, colored inorganic pigments such as Prussian blue and ultramarine, talc, mica, sericite, silica, silicic anhydride, synthetic phlogopite, kaolin, silicon carbide, bentonite, hectorite, smectite, diatomaceous earth, aluminum silicate, magnesium aluminum metasilicate, calcium silicate, barium silicate, magnesium silicate, calcium carbonate, magnesium carbonate, barium sulfate, hydroxyapatite, etc. Examples of suitable pigments include white body powders such as iron, boron nitride, etc.; zirconium powders such as Red No. 201, Red No. 202, Red No. 205, Red No. 226, Red No. 228, Orange No. 203, Orange No. 204, Blue No. 404, Yellow No. 401, Red No. 3, Red No. 104, Red No. 106, Orange No. 205, Yellow No. 4, Yellow No. 5, Green No. 3, and Blue No. 1; organic pigment powders such as barium or aluminum lake; metal soap powders; and organic low-molecular-weight powders such as N-acyl lysine, and one or more of these can be used.

[0041] The oil agent is one other than component (D), and examples thereof include hydrocarbon oils such as undecane, isodecane, isododecane, tridecane, hydrogenated polyisobutene, light liquid paraffin, liquid paraffin, and squalane; isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, glyceryl trioctanoate, diglyceryl diisostearate, diglyceryl triisostearate, diisostearyl malate, propylene glycol dicaprate, cetyl 2-ethylhexanoate, 2-ethylhexyl hydroxystearate, pentaerythrityl tetraisostearate, octyldodecyl stearoyloxystearate, Examples of suitable oils include ester oils such as 2-ethylhexyl paramethoxycinnamate; higher alcohols such as cetearyl alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, arachyl alcohol, behenyl alcohol, 2-hexyldecanol, isostearyl alcohol, and 2-octyldodecanol; and higher fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, and lanolin fatty acid. These oils can be used alone or in combination. Among these, volatile oils are preferred for ease of use in cosmetics. Examples of suitable volatile oils include undecane, tridecane, isodecane, isododecane, hydrogenated polyisobutene, and light liquid paraffin.

[0042] Examples of surfactants include nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants, and these can be used alone or in combination. In the oil-based dispersion of the present invention, component (A) exhibits excellent dispersibility for the metal oxides of components (B) and (C) in a dispersion medium containing component (D), so the metal oxides can be stably dispersed without the use of a surfactant. When a surfactant is used, from the viewpoint of cosmetic durability, etc., its content is preferably less than 2% of the total oil-based dispersion, more preferably 1% or less, even more preferably 0.5% or less, even more preferably 0.25% or less, and particularly preferably 0.1% or less.

[0043] The method for producing the oil dispersion of the present invention is not particularly limited, and the oil dispersion can be produced according to a known method. However, an example of a suitable production method includes a step of dispersing component (A) in component (D) to obtain a silicone polyurethane gel, and a step of dispersing components (B) and (C) in the silicone polyurethane gel.

[0044] In the step of obtaining the silicone polyurethane gel, the dispersion method is not particularly limited, and for example, one or more of a stirrer, ultrasonic disperser, homogenizer, bead mill, disperser, etc. can be used. The dispersion temperature may be, for example, about 60 to 100°C, and preferably about 70 to 90°C. The timing of dispersing component (D) in component (A) is not particularly limited, and for example, component (D) may be brought to the above temperature, and then component (A) may be added and dispersed, or component (A) may be added to component (D), and then dispersed while adjusting the temperature to the above temperature.

[0045] Next, components (B) and (C) are dispersed in the silicone polyurethane gel obtained by the above process. Specifically, from the viewpoint of the dispersibility of components (B) and (C), it is preferable to preheat the silicone polyurethane gel to 60 to 100°C, preferably about 70 to 90°C, and then add components (B) and (C) to the gel, pre-mix, and then disperse them. The dispersion method is not particularly limited, and includes the methods described above. The dispersion temperature is also not particularly limited, and may be, for example, about 5 to 45°C, preferably about 15 to 35°C. The oil-based dispersion of the present invention can be obtained by uniformly dispersing components (B) and (C) in the silicone polyurethane urethane gel.

[0046] The oily dispersion of the present invention can be used as an oily cosmetic as is, or can be used by adding optional ingredients to make cosmetics of any formulation, such as oil-in-water emulsion cosmetics or water-in-oil emulsion cosmetics, with oily cosmetics and water-in-oil emulsion cosmetics being particularly preferred. The cosmetic of the present invention can be applied to, for example, makeup cosmetics such as foundation, makeup base, concealer, face powder, lipstick, blush, eye shadow, eyebrow, mascara, eyeliner, etc.; basic cosmetics such as emulsion, cream, serum, cosmetic oil, etc.; hair cosmetics such as hair cream, hair liquid, etc.; and of these, makeup cosmetics are preferred, and foundation, makeup base, concealer, etc. are even more preferred.

[0047] The content of the oily dispersion in the cosmetic of the present invention is not particularly limited and is selected appropriately depending on the formulation, etc. The content of the oily dispersion is, for example, preferably 1 to 100% of the total amount of the cosmetic, more preferably 10 to 90%, and even more preferably 20 to 80%. For example, when an oil-based cosmetic is used, the content of the oily dispersion is preferably 20 to 100% of the total amount of the oil-based cosmetic, more preferably 30 to 95%, and even more preferably 40 to 90%. For example, when a water-in-oil emulsion cosmetic is used, the content of the oily dispersion is preferably 40 to 90% of the total amount of the water-in-oil emulsion cosmetic, more preferably 45 to 85%, and even more preferably 50 to 80%.

[0048] The cosmetic of the present invention may contain other optional components within the scope of not impairing the effects of the present invention. Examples of other optional components include the powders, oils, surfactants, etc. listed as optional components usable in the oil-based dispersions described above, as well as aqueous components such as ultraviolet absorbers, antioxidants, and moisturizers.

[0049] Examples of ultraviolet absorbers include benzophenone-based, PABA-based, cinnamic acid-based, and salicylic acid-based absorbers, such as 4-TERT-butyl-4'-methoxydibenzoylmethane, oxybenzone, 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine, diethylaminohydroxybenzoylhexyl benzoate, and bisethylhexyloxyphenol methoxyphenyl triazine.

[0050] Examples of antioxidants include tocopherol and ascorbic acid, examples of cosmetic ingredients include vitamins, anti-inflammatory agents, and herbal medicines, and examples of preservatives include paraoxybenzoic acid esters, phenoxyethanol, and 1,2-pentanediol.

[0051] Examples of aqueous components include water, glycols such as propylene glycol, 1,3-butylene glycol, 1,2-pentanediol, dipropylene glycol, tripropylene glycol, and polyethylene glycol, glycerols such as glycerin, diglycerin, and polyglycerin, and plant extracts. In the present invention, "oily" means that the water content is substantially free of water, and specifically, the water content is preferably 1% or less, more preferably 0.5% or less, and even more preferably 0.1% or less.

[0052] In the cosmetic of the present invention, metal oxides can be stably dispersed without the use of a surfactant, which prevents sebum and other substances from being absorbed into the cosmetic film formed after application to the skin, thereby preventing a decrease in cosmetic durability. When a surfactant is blended into the cosmetic of the present invention, the content thereof is preferably less than 2% of the total amount of the cosmetic, more preferably 1.5% or less, even more preferably 1% or less, and particularly preferably 0.5% or less.

[0053] The dispersant of the present invention contains component (A) as an active ingredient and can highly disperse component (B) and / or component (C) in a dispersion medium containing component (D). The preferred types and content masses of components (A) to (D) are the same as those in the case of the oil-based dispersion. [Example]

[0054] The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples.

[0055] [Preparation of silicone polyurethane gel] (Production Example 1) A 3L three-neck flask was charged with 212 parts of silicone polyol (2)-2 (molecular weight 5000), 30 parts of dimethicone (2CS), and 21 parts of hexamethylene diisocyanate, and mixed uniformly. While maintaining the temperature at 70°C, 70 parts of dibutyltin dilaurate was added, and after stirring for 2 hours, 6 parts of ethylene glycol was added. After the addition was completed, the mixture was stirred at 70°C for 16 hours, and then 0.5 parts of ethanol and 40 parts of dimethicone were added to complete the reaction. The weight average molecular weight of the silicone polyurethane in the resulting silicone polyurethane gel was 63793 as determined by GPC (polystyrene equivalent).

[0056] (Production Example 2) A 3L three-neck flask was charged with 214 parts of silicone polyol (2)-2 (molecular weight 5000), 30 parts of dimethicone (2CS), and 20 parts of hexamethylene diisocyanate, and mixed uniformly. While maintaining the temperature at 70°C, 0.025 parts of dibutyltin dilaurate was added, and after stirring for 2 hours, 6 parts of ethylene glycol was added. After the addition was completed, the mixture was stirred at 70°C for 16 hours, and then 0.5 parts of ethanol and 40 parts of dimethicone were added to complete the reaction. The weight average molecular weight of the silicone polyurethane in the resulting silicone polyurethane gel was 29,446, as determined by GPC (polystyrene equivalent).

[0057] (Production Example 3) A 3L three-neck flask was charged with 222 parts of silicone polyol (2)-1 (molecular weight 3000), 30 parts of dimethicone (2CS), 5.5 parts of hexamethylene diisocyanate, and 0.025 parts of dibutyltin dilaurate, and mixed uniformly. After stirring for 2 hours while controlling the temperature at 70°C, 3.5 parts of ethylene glycol and 2 parts of ethanol were added and mixed uniformly. After stirring for 2 hours while controlling the temperature at 70°C, 5 parts of hexamethylene diisocyanate nurate were added, and the mixture was stirred at 70°C for 16 hours. Then, 0.5 parts of ethanol and 40 parts of dimethicone were added to complete the reaction. 30 parts of dimethicone (2CS) were added to the resulting silicone polyurethane, mixed at 80°C, and then allowed to cool to 25°C, yielding a silicone polyurethane gel. The weight average molecular weight of the polyurethane in the silicone polyurethane gel was 68,488 as determined by GPC (polystyrene equivalent).

[0058] [Examples 1 to 24 and Comparative Examples 1 to 8] Oil dispersions having the compositions shown in Tables 1 and 2 below were prepared by the following production method. Furthermore, the oil dispersions shown in Table 1 were used to prepare water-in-oil emulsion cosmetics shown in Table 3 by the following production method. The obtained oil dispersions and water-in-oil emulsion cosmetics were evaluated for (1) UV protection effect, (2) durability of UV protection effect against sebum, (3) color durability against sebum, and (4) smoothness at the end of application by the methods described below. The results are also shown in Tables 1 to 3. Note that the unit of the numerical values ​​for the content of each component in each table is % by mass.

[0059] [Table 1]

[0060] [Table 2]

[0061] [Table 3]

[0062] (Methods for preparing oil dispersions of Examples 1 to 20 and Comparative Examples 1 to 6) A. Mix components (1) to (5) and components (15) to (18) uniformly at 70°C. B: Components (6) to (14) and component (19) are added to A and mixed uniformly at 25°C. C: B was filled into a container to obtain an oily dispersion.

[0063] (Methods for preparing water-in-oil emulsion cosmetics of Examples 21 to 25 and Comparative Examples 7 and 8) A: Mix ingredients (1) to (9) uniformly at 70°C. B: Add component (10) to A and emulsify at 25°C. C: B was filled into a container to obtain a water-in-oil emulsion cosmetic (foundation).

[0064] <Evaluation method: (1) UV protection effect> Each sample was mounted on a PMMA plate (HELIOPLATE HD6 manufactured by LABSPHERE) at 2MG / cm 2 After applying the amount of the above with a finger, the sample was left to stand for 20 minutes, and an SPF simulation measurement was performed using an SPF analyzer (UV-2000S manufactured by LABSPHERE) to measure the SPF simulation value. Based on the obtained SPF simulation value, the UV protection effect was judged according to the following criteria.

[0065] <5-point rating scale> [5-level evaluation criteria] (Judgment criteria) :(Judgment) SPF simulation value 60 or more: AA SPF simulation value 50 or more but less than 60: A SPF simulation value 40 or more but less than 50: B SPF simulation value 30 or more but less than 40: C SPF simulation value less than 30: D

[0066] <Evaluation method: (2) Durability of UV protection effect against sebum> The SPF simulation value of each sample obtained in (1) above was defined as SPFI, and the PMMA plate coated with each sample was immersed in artificial sebum (triglyceride) simulating the composition of human sebum, and after spraying air to remove the artificial sebum, the SPF simulation value (SPFF) was measured again. The SPFF value relative to SPFI (SPFF / SPFI) was calculated, and the durability of the UV protection effect against sebum was judged according to the following criteria.

[0067] [5-level evaluation criteria] (Judgment criteria) :(Judgment) 0.95 or more and 1 or less: AA 0.90 or more and less than 0.95: A 0.80 or more and less than 0.90: B 0.70 or more and less than 0.80: C Less than 0.70: D

[0068] <Evaluation method: (3) Color durability against sebum> Each sample was applied to black artificial leather at 2MG / CM. 2 After applying the amount of the above with a finger, the sample was left to stand for 20 minutes, and the color (L1, A1, B1) of the sample was measured using a spectrophotometer SE-7700 (manufactured by Nippon Denshoku Industries Co., Ltd.). As in (2) above, each sample was immersed in artificial sebum simulating the composition of human sebum, and the color (L2, A2, B2) was measured. The resulting color difference ΔE was calculated, and the color durability against sebum was evaluated according to the following criteria. The ΔE of each sample was calculated using the following formula. ΔE=[(L1-L2) 2 +(A1-A2) 2 +(B1-B2) 2 ] 1 / 2 (formula)

[0069] [5-level evaluation criteria] (Judgment criteria) :(Judgment) Less than 0.1: AA 0.1 or more and less than 0.5: A 0.5 or more and less than 1: B 1 or more and less than 1.5: C 1.5 or more: D

[0070] <Evaluation method: (4) Smoothness at the end of application> Each sample was subjected to a usability test by a panel of 10 cosmetic evaluation specialists. Each panelist evaluated the sensation upon application on a 5-point scale based on the absolute evaluation criteria below, asking whether there was any discomfort at the "stop-apply" point, where the product suddenly became heavy and spread easily. The average score was calculated from the total scores of all panelists for each sample, and the results were judged according to the 5-point scale below.

[0071] <Absolute evaluation criteria> (Rating): (Evaluation) 5 points: very good 4 points: Good 3 points: Fairly good 2 points: slightly poor 1 point: Defective

[0072] <5-level evaluation criteria> (Average score): (Judgment) 4.5 points or above: AA 4 points or more and less than 4.5 points: A 3 points or more but less than 4 points: B 2 points or more but less than 3 points: C Less than 2 points :D

[0073] The oil dispersions of Examples 1 to 20 and the water-in-oil emulsion cosmetics of Examples 21 to 25 all had excellent UV protection effect, UV protection effect durability against sebum, and color durability, and also had excellent smoothness when applied. In contrast, Comparative Example 1, which did not contain component (A), showed results inferior to those of the Examples in all evaluation items. Comparative Example 2, which used a polymer gel having only urethane bonds instead of component (A), showed inferior UV protection effect, durability of UV protection effect against sebum, and color durability against sebum compared to the Examples. Comparative Example 3, in which a polymer gel having only siloxane bonds was used instead of component (A), showed results inferior to those of the Examples in all evaluation items. Comparative Example 4, which did not contain component (B), showed results inferior to those of the Examples in all evaluation items. Comparative Example 5, which did not contain component (C), was inferior to the Examples in the durability of the UV protection effect against sebum, the color durability against sebum, and the smoothness at the end of application. Comparative Example 6, in which ester oil was used instead of component (D), showed results inferior to those of the Examples in terms of the durability of the UV protection effect against sebum, the color durability against sebum, and the smoothness at the end of application. Furthermore, the water-in-oil emulsion cosmetics of Comparative Examples 7 and 8, which contained the oil dispersion of Comparative Example 1 or 2, were inferior to the Examples in all evaluation items.

[0074] Example 26: Water-in-oil emulsified blush (Component) (%) 1. Titanium dioxide (untreated, particle size 0.25 μM) 3.0 2. Red No. 226 0.5 3. Yellow No. 4 0.3 4. Fine particle zinc oxide (MZ-500, manufactured by Teika Corporation, particle size 25NM) 2.0 5. Dimethylpolysiloxane-treated synthetic phlogopite 3.5 6. (Acrylates / Ethylhexyl acrylate / Dimethicone methacrylate copolymer 2.0 7. Di-2-ethylhexyl malate 2.5 8. Dimer Dilinoleic Acid (Phytosteryl / Isostearyl / Cetyl / Stearyl / Behenyl) 3.0 9. Silicone polyurethane gel of Production Example 1 10.0 10. Dimethylpolysiloxane (25°C kinematic viscosity 6CS) 8.0 11. Dimethylpolysiloxane (25°C kinematic viscosity 2CS) 15.0 12. Isododecane 8.0 13. Mica remaining amount 14. Zinc stearate treated synthetic phlogopite titanium 5.0 15. Nylon Powder 3.0 16. Dimethyl distearyl ammonium hectorite 1.0 17. Phenoxyethanol 0.3 18. Ethyl alcohol 5.0 19. Glycerin 5.0 20.Purified water 15.0 21.Fragrance 0.1 22. Sodium chloride 0.3

[0075] (Manufacturing method) A: Heat ingredients (1) to (10) to 80°C and then mix uniformly using a roller. B: Mix ingredients (11) to (16) with A and stir. C: Mix and dissolve components (17) to (22). D: C was added to B and emulsified, and the mixture was filled into a container to obtain a water-in-oil emulsified blush.

[0076] The water-in-oil emulsion blush of Example 26 was excellent in UV protection effect, durability of UV protection effect against sebum, and color durability, and it spread smoothly even when stopped upon application, and it also had an excellent feel when used.

[0077] Example 27: Water-in-oil emulsion base (Component) (%) 1. Titanium dioxide (untreated, particle size 0.25 μM) 5.0 2. Fine particle zinc oxide (MZ-500, manufactured by Teika Co., Ltd., particle size 25NM) 5.0 3. Red No. 226 0.15 4. Yellow iron oxide 0.5 5. (Acrylates / Ethylhexyl acrylate / Dimethicone methacrylate copolymer 2.0 6. 2-Ethylhexyl paramethoxycinnamate 5.0 7. Diethylaminohydroxybenzoylhexyl benzoate 1.0 8. Bis-ethylhexyloxyphenol Methoxyphenyltriazine 1.0 9. Polyglyceryl-2 Triisostearate 1.5 10. Dimer Dilinoleic Acid (Phytosteryl / Isostearyl / Cetyl / Stearyl / Behenyl) 3.0 11. Silicone polyurethane gel of Preparation Example 1 5.0 12. Dimethylpolysiloxane (25°C kinematic viscosity 6CS) 8.0 13. Methyl trimethicone 10.0 14. Dimethylpolysiloxane (25°C kinematic viscosity 2CS) 15.0 15. (Diphenyl Dimethicone / Vinyl Diphenyl Dimethicone / Silsesquioxane Crosspolymer 3.0 16. Methyl methacrylate crosspolymer 3.0 17. Dimethyl distearyl ammonium hectorite 1.0 18. Mica remaining amount 19. Phenoxyethanol 0.1 20. Ethyl alcohol 5.0 21. Glycerin 3.0 22. Rosemary extract 0.1 23.Purified water 15.0 24.Fragrance 0.1 25. Sodium chloride 1.0 26. Methylenebisbenzotriazolyltetramethylbutylphenol 2.0

[0078] (Manufacturing method) A: Heat ingredients (5) to (12) to 80°C and mix to dissolve. B: Disperse components (1) to (4) and (13) to (18) in A and cool to room temperature. C: Mix and dissolve components (19) to (25). D: Disperse component (26) in C. E: D was added to B and emulsified, and the mixture was filled into a container to obtain a water-in-oil emulsion base.

[0079] The water-in-oil emulsion base of Example 27 was excellent in UV protection effect, UV protection effect durability against sebum, and color durability, and it spread smoothly even when stopped during application, and it also had an excellent feel when used.

[0080] Example 28: Water-in-oil emulsion eye shadow (Component) (%) 1. (Acrylates / Dimethicone) Copolymer 14.0 2. Silicone polyurethane gel of Production Example 1 10.0 3. Dimethylpolysiloxane (25°C kinematic viscosity 2CS) 10.0 4. Dimer Dilinoleic Acid (Phytosteryl / Isostearyl / Cetyl / Stearyl / Behenyl) 3.0 5. Dimethylpolysiloxane (25°C kinematic viscosity 10CS) 20.0 6. Titanium dioxide (untreated, particle size 0.25 μM) 1.0 7. Red No. 226 0.3 8. Bengala 0.2 9. Yellow iron oxide 0.3 10. Black iron oxide 0.1 11. Fine particle zinc oxide (MZ-500, manufactured by Teika Corporation, particle size 25NM) 2.0 12. Mica remaining amount 13. Mica Titanium ※1 2.0 14. Red iron oxide coated mica titanium ※2 5.0 15. Titanium oxide coated glass powder *3 1.0 16. Spherical nylon powder (average particle size 15 μM) 3.0 17.Purified water 10.0 18. Ethyl alcohol 7.0 19. Glycerin 3.0 20. Agar 0.1 21. Phenoxyethanol 0.1 22.Fragrance 0.1 *1: COSMETICA SUPER WHITE N-8000S (manufactured by CQV) *2: BLONDIEE METALLIC GOLD N-2000S (manufactured by CQV) *3: REFLECKS MULTIDIMENSIONS VARYING VIOLET (BASF)

[0081] (Manufacturing method) A: After dissolving and mixing components (1) to (5) at 80°C, components (6) to (16) are added and mixed uniformly using a homomixer. B: Components (17) to (22) were uniformly dissolved and mixed, then added to A and emulsified. After degassing, the mixture was filled into a resin container with an applicator to obtain a water-in-oil emulsion eye shadow.

[0082] The water-in-oil emulsion eye shadow of Example 28 was excellent in UV protection effect, UV protection effect durability against sebum, and color durability, and it spread smoothly even when stopped upon application, and it also had an excellent feel when used.

[0083] Example 29: Oily concealer (Component) (%) 1. Silicone polyurethane gel of Production Example 1 10.0 2. Titanium dioxide (untreated, particle size 0.25 μM) 15.0 3. Fine particle zinc oxide (MZ-500, manufactured by Teika Co., Ltd., particle size 25NM) 2.0 4. Zinc oxide (XZ-300F, Sakai Chemical Industry Co., Ltd., particle size 300 nm) 3.0 5. Dimethylpolysiloxane (25°C kinematic viscosity 2CS) 10.0 6. Dimethylpolysiloxane (25°C kinematic viscosity 20CS) 20.0 7. Boron nitride 7.0 8. Bengala 0.2 9. Yellow iron oxide 0.3 10. Black iron oxide 0.1 11. Lauroyl Lysine 3.0 12. Mica remaining amount 13. Spherical silica (average particle size 15 μM) 3.0 14. Spherical porous silica (average particle size 8 μM) 2.0 15. Polyethylene (melting point 90°C) 3.0 16. Microcrystalline wax (melting point) 6.0 17. Vaseline (melting point 58°C) 3.0 18. Dipropylene glycol 0.5 19. Glycerin 1.0 20. Glyceryl tri-2-ethylhexanoate 7.0 21. Lavender oil 0.1 22.Fragrance 0.1

[0084] (Manufacturing method) A: After dissolving and mixing components (1) to (6) at 80°C, components (7) to (14) are added and mixed uniformly using a homomixer. B: Components (15) to (22) were uniformly dissolved and mixed at 90°C, then added to A and mixed, poured into a metal dish at 80°C, and cooled to 25°C to obtain an oil-based concealer.

[0085] The oily concealer of Example 29 was excellent in UV protection effect, UV protection effect durability against sebum, and color durability, and it spread smoothly even when stopped upon application, and it also had an excellent feel when used.

[0086] Example 30: Water-in-oil emulsion foundation (Component) (%) 1. Silicone polyurethane gel of Production Example 1 10.0 2. Fine particle zinc oxide*4 5.0 3. Titanium dioxide (average particle size 250NM, lecithin 1% treated) 5.0 4. (Acrylates / Ethylhexyl acrylate / Dimethicone methacrylate) Copolymer 0.5 5. Bengala (treated with 2% stearoyl glutamic acid disodium) 0.15 6. Yellow iron oxide (treated with 2% stearoyl glutamic acid disodium) 0.5 7. Black iron oxide (treated with 2% stearoyl glutamic acid disodium) 0.1 8. Synthetic Fluorophlogopite 3.0 9. Dimethylpolysiloxane (25°C kinematic viscosity 6CS) 10.0 10. Isotridecyl isononanoate 2.0 11. Bis-ethylhexyloxyphenol methoxyphenyl triazine 2.0 12. Diethylaminohydroxybenzoylhexyl benzoate 3.0 13. Vaseline (melting point 55°C) 1.0 14. Dilinoleic Acid Di(Phytosteryl / Isostearyl / Cetyl) / Stearyl / Behenyl) 0.8 15. Particulate metal oxide dispersion *5 8.0 16. Polyglyceryl-2 diisostearate*6 3.0 17. Diisostearyl Malate*7 2.0 18. Tribehenin 0.5 19. Oil-soluble polyurethane *8 1.2 20. (Dimethicone / vinyl dimethicone) crosspolymer *9 3.0 21. PEG-9 Polydimethylsiloxyethyl Dimethicone 0.2 22. Trimethylsiloxysilicate 1.0 23. Tocopherol 0.001 24. Cetyl PEG / PPG-10 / 1 Dimethicone 0.1 25. Dimethyl distearyl ammonium hectorite 0.6 26. Benzyl dimethyl stearyl ammonium hectorite 0.4 27. Dimethylpolysiloxane (25°C kinematic viscosity 2CS) 7.0 28. Ethanol 0.5 29. Remaining purified water 30. 1,3-Butylene Glycol 2.0 31. Ethanol 4.0 32. Hyaluronic acid Na 0.001 33. Hydrolyzed Hyaluronic Acid 0.001 34. Hydroxypropyltrimonium Hyaluronate 0.001 35. Glycerin 0.5 36. Methylenebisbenzotriazolyltetramethylbutylphenol water dispersion*10 6.0 *4: MZX-304OTS (manufactured by Teika Co., Ltd.) *5: SPD-T5 (Shin-Etsu Chemical Co., Ltd.) *6: Cosmol 42V (manufactured by Nisshin Oillio Co., Ltd.) *7: Himalate DIS (Kyushu Alcohol Kogyo Co., Ltd.) *8: OILKEMIA 5S CC POLYMER (manufactured by Lubrizol) *9: KSG-16 (Shin-Etsu Chemical Co., Ltd.) *10: K22-M40 (manufactured by Dai Nippon Kasei Co., Ltd.)

[0087] (Manufacturing method) A: Heat ingredients (1) to (10) to 80°C and then mix uniformly using a roller. B: Components (24) to (28) are mixed uniformly using a roller at 25°C. C: Components (11) to (23) and B are added to A and mixed uniformly at 80°C. D: Mix ingredients (29) to (36) uniformly at 25°C. E: Add D to C at 25°C, emulsify, and degas. F: E was filled into a tube container at 25°C to obtain a water-in-oil emulsion foundation.

[0088] The water-in-oil emulsion foundation of Example 30 was excellent in UV protection effect, UV protection effect durability against sebum, and color durability, and it spread smoothly even when stopped during application, and it also had an excellent feel when used.

Claims

1. The following components (A) to (D): (A) Silicone polyurethane (B) Fine particle metal oxide (C) Pigment-grade metal oxides (D) Silicone oil An oil dispersion comprising: An oil-based dispersion, wherein the content of the component (D) relative to the total amount of oil contained in the oil-based dispersion is 40 mass% or more.

2. 10. The oil dispersion of claim 1, wherein said component (B) comprises a particulate metal oxide that is not surface-treated.

3. 3. The oil-based dispersion according to claim 1, wherein the mass ratio of the total content of components (B) and (C) to component (A), [(B) + (C) / (A)], is 1 to 150.

4. 3. The oil-based dispersion of claim 1, wherein component (D) comprises a volatile silicone oil.

5. A cosmetic comprising the oily dispersion according to claim 1 or 2.

6. The cosmetic according to claim 5, which is an oil-based cosmetic.

7. The cosmetic according to claim 5, which is a water-in-oil emulsion cosmetic.

8. 8. The water-in-oil emulsion cosmetic according to claim 7, wherein the content of the surfactant in the total amount of the water-in-oil emulsion cosmetic is less than 2% by mass.

9. The following components (A) to (D): (A) Silicone polyurethane (B) Fine particle metal oxide (C) Pigment-grade metal oxides (D) Silicone oil The method for producing an oil-based dispersion comprising the steps of: dispersing component (A) in component (D) to obtain a silicone polyurethane gel; dispersing the component (B) and the component (C) in the silicone polyurethane gel; A method for producing an oil-based dispersion comprising:

10. A dispersant for component (B) fine particle metal oxide and / or component (C) pigment grade metal oxide in a dispersion medium containing component (D) silicone oil, which comprises component (A) silicone polyurethane as an active ingredient.

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