Liquid oil composition and cosmetic comprising same

Abstract

A liquid oily composition according to the present invention comprises: component (A): a dimethicone having a kinematic viscosity at 25 DEG C of 4-12 mm2 / s; component (B): an ester oil which is a liquid at 25 DEG C and which has a simethicone solubility value of 1.75 or more as determined by formula (I); and component (C): an ester oil which is a liquid at 25 DEG C and which has a simethicone solubility value of less than 1.75 as determined by formula (I), the liquid oily composition being transparent and uniform at 25 DEG C, and component (A) being separated from a mixture in which 8 parts by mass of macadamia nut oil is added per 100 parts by mass of the liquid oily composition.

Description

Technical Field

[0001] The present invention relates to a liquid oily composition and a cosmetic comprising the liquid oily composition.

[0002] This application claims priority based on Japanese Patent Application No. 2022-132567 filed in Japan on August 23, 2022, the contents of which are incorporated herein by reference. Background Art

[0003] Generally speaking, there are internal factors and external factors as causes of makeup removal.

[0004] Internal factors include contact between cosmetics and secretions from the human body, such as moisture such as sweat and tears, and oil such as sebum. External factors include contact with masks, clothes, etc., which causes cosmetics to adhere to masks, clothes, etc. Hereinafter, such adhesion of cosmetics is sometimes referred to as "secondary adhesion". Protecting the cosmetic film from these factors and making the cosmetic film last is becoming a major issue.

[0005] A solution to makeup removal due to sweat is proposed: by adding a water-repellent base material such as silicone resin to cosmetics. Another solution to makeup removal due to sebum is proposed: by adding a water-repellent and oil-repellent base material such as fluorine-based oil.

[0006] Patent Document 1 discloses, for example, a cosmetic comprising fluorine-modified silicone oil in which a fluoroalkyl group is introduced into dimethyl silicone oil. Patent Document 2 discloses an emulsified cosmetic that is formulated with a specific powder in addition to a silicone resin as a film-forming agent, thereby achieving good ductility and smoothness, no burden on the skin, long-lasting makeup effects, and excellent uniformity of the makeup film.

[0007] However, although the fluorine-modified silicone oil in which a fluoroalkyl group is introduced into dimethyl silicone oil and the silicone resin as a film-forming agent improve the maintenance of the cosmetic film, the compatibility with other cosmetic ingredients is poor. As a result, there are difficulties in stability such as separation during storage, and there are restrictions on the components used in combination to improve compatibility, so the touch is sometimes limited.

[0008] Furthermore, in the process of forming a cosmetic film using a silicone resin as a film-forming agent, it takes about 15 minutes for the solvent to evaporate after applying it to the skin, and sometimes a tight feeling may be felt after the cosmetic film is formed.

[0009] Under such circumstances, there is a demand for the development of a cosmetic raw material that suppresses secondary adhesion of cosmetics, has strong and lasting water repellency, has good compatibility with other cosmetic ingredients, and has few restrictions on formulation.

[0010] Prior art literature

[0011] Patent Literature

[0012] Patent Document 1: Japanese Patent Application Laid-Open No. 06-184312

[0013] Patent Document 2: Japanese Patent Application Publication No. 2006-265213 Summary of the invention

[0014] Problems to be solved by the invention

[0015] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a liquid oily composition that can impart a secondary adhesion inhibition effect and strong and lasting water repellency when applied to the skin, and to provide a cosmetic containing the liquid oily composition.

[0016] Solutions to the problem

[0017] The present inventors have found that the problem can be solved by using an appropriate ester oil based on the dimethicone compatibility value calculated from the molecular structure characteristics of the ester oil, for a liquid oil composition containing two or more ester oils having different compatibilities with dimethicone oil and dimethicone oil in a uniform state at a specific ratio. That is, the inventors have found that a cosmetic containing the liquid oil composition can impart an excellent secondary adhesion inhibition effect and excellent water repellency with strength and durability to the cosmetic by mixing it with sebum, thereby completing the present invention.

[0018] That is, the present invention includes the following aspects.

[0019] [1] A liquid oily composition comprising:

[0020] Component (A), kinematic viscosity at 25°C is 2~12mm 2 / s dimethyl silicone oil;

[0021] Component (B), an ester oil which is liquid at 25°C and has a dimethyl silicone oil compatibility value of 1.75 or more as determined by the following formula (I); and

[0022] Component (C) is a liquid at 25°C, an ester oil having a dimethyl silicone oil compatibility value of less than 1.75 as determined by the following formula (I),

[0023] The liquid oil composition is transparent and uniform at 25°C, and

[0024] Component (A) was isolated from a mixture in which 8 parts by mass of macadamia nut oil was added to 100 parts by mass of the liquid oil composition.

[0025]

[0026] [2] The liquid oil composition according to [1] above, wherein

[0027] The mass ratio of the component (B) to the component (C) ((B) / (C)) is 0.32 to 18.00;

[0028] The mass ratio of the total amount of the component (B) and the component (C) to the component (A) ({(B)+(C)} / (A)) is 1.50 to 12.33.

[0029] [3] The liquid oil composition according to [1] or [2] above, wherein

[0030] The component (B) is selected from isononyl isononanoate, isotridecyl isononanoate, neopentyl glycol diethylhexanoate, glyceryl triethylhexanoate, glyceryl triisostearate (with a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure on the fatty chain), diisostearyl malate (with a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure on the fatty chain), pentaerythritol tetraethylhexanoate, neopentyl glycol didecyl One or more ester oils selected from the group consisting of glyceryl tristearate, propylene glycol di(caprylic acid / capric acid), polyglyceryl-2 triisostearate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure on the fatty chain), cetyl ethylhexanoate, ethylhexyl palmitate, glyceryl tris(caprylic acid / capric acid) ester, and dipentaerythritol pentaisostearate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure on the fatty chain).

[0031] [4] The liquid oil composition according to any one of [1] to [3] above, wherein

[0032] The component (C) is one or more ester oils selected from propylene glycol diisostearate, trimethylolpropane triisostearate, pentaerythritol tetraisostearate, polyglyceryl-2 tetraisostearate, polyglyceryl-2 triisostearate, and ethylhexyl hydroxystearate.

[0033] [5] The liquid oil composition according to any one of [1] to [4] above, wherein

[0034] The viscosity of the mixture consisting of the component (B) and the component (C) at 25° C. is 30 to 1200 mPa•s.

[0035] [6] A cosmetic comprising the liquid oily composition according to any one of [1] to [5] above.

[0036] [7] The cosmetic according to the above [6], further comprising ingredient (D): powder.

[0037] [8] The cosmetic according to [6] or [7] above, which is an oil-in-water emulsified cosmetic or a water-in-oil emulsified cosmetic, further comprising:

[0038] Ingredients (E): water, and

[0039] Ingredient (F): surfactant.

[0040] [9] A method for producing a cosmetic, comprising the liquid oily composition according to any one of [1] to [5] as a raw material.

[0041] Effects of the Invention

[0042] According to the present invention, there can be provided a liquid oily composition that can exert a secondary adhesion inhibition effect on cosmetics and impart strong and lasting water repellency, and a cosmetic containing the liquid oily composition. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 The photographs (actual shots) of Example 1 and Comparative Example 1 and the figures obtained by binarizing these photographs are shown.

[0044] Figure 2 The photographs (actual shots) of Example 42 and Comparative Example 50 and figures obtained by binarizing these photographs are shown. DETAILED DESCRIPTION

[0045] Regarding the numerical range, "A or more and B or less" is sometimes expressed as "A to B". For example, when it is recorded as "1 to 10 parts by mass", it means the range from 1 part by mass to 10 parts by mass, including the lower limit (1 part by mass) and the upper limit (10 parts by mass), that is, "1 part by mass or more and 10 parts by mass or less".

[0046] <Liquid Oily Composition>

[0047] First, the outline of the liquid oil-based composition according to the present embodiment will be described.

[0048] The liquid oil composition of the present embodiment contains the following specific dimethyl silicone oil (component (A)) and specific ester oil (component (B), component (C)). Component (A), component (B), and component (C) are described in detail below.

[0049] Component (A): 1 or more components with a kinematic viscosity of 2 to 12 mm at 25°C 2 / s of dimethyl silicone oil.

[0050] Component (B): one or more ester oils which are liquid at 25°C and have a dimethyl silicone oil compatibility value of 1.75 or more as determined by Formula 1 described below.

[0051] Component (C): one or more ester oils which are liquid at 25°C and have a dimethyl silicone oil compatibility value of less than 1.75 as determined by Formula 1 described below.

[0052] The liquid oil composition of this embodiment has the following two properties.

[0053] The liquid oily composition was transparent and uniform at 25°C (hereinafter, "compatibility 1").

[0054] When 8 parts by mass of macadamia nut oil was added to 100 parts by mass of the liquid oil composition, the liquid oil composition was insoluble (hereinafter, "compatibility 2").

[0055] It should be noted that the state in which the appearance of the liquid oil composition is transparent and uniform is defined as the components constituting the liquid oil composition being compatible or soluble. Here, "compatible" or "compatible" means that when the mixture (liquid oil composition) is visually observed, it is transparent and does not separate, blur, or turbid; "immiscible" or "no compatibility" means that when the mixture is visually observed, it is separated, blurred, or turbid.

[0056] (Compatibility 1)

[0057] In the liquid oil composition satisfying the above-mentioned compatibility 1, the components constituting the liquid oil composition are miscible with each other at 25°C.

[0058] (Compatibility 2)

[0059] The term “incompatible” in the compatibility 2 above means that when a mixture obtained by adding macadamia nut oil to a liquid oil composition is visually observed, separation, cloudiness or turbidity occurs.

[0060] Macadamia oil and component (A) are incompatible regardless of the ratio at which they are mixed, but macadamia oil and component (B) and macadamia oil and component (C) have the property of being compatible regardless of the ratio at which they are mixed. Since the compatibilities of the components with respect to macadamia oil are different, when macadamia oil is mixed into the liquid oil composition, macadamia oil and component (B) and component (C) are compatible, and component (A) is separated. That is, the liquid oil composition of the present embodiment having both compatibility 1 and compatibility 2 is a transparent and uniform liquid composition before being mixed with macadamia oil, but the compatibility disappears by mixing with macadamia oil.

[0061] In the present embodiment, macadamia oil is used as a substitute for sebum. The constituent fatty acids of macadamia oil are similar to the constituent fatty acids of triglycerides constituting sebum. Therefore, macadamia oil and sebum show the same behavior in terms of compatibility with dimethicone as component (A), ester oil as component (B), and ester oil as component (C). Therefore, in the present embodiment, macadamia oil is used instead of sebum, and the behavior of the liquid oily composition when sebum is mixed into the liquid oily composition is confirmed. More specifically, based on the compatibility when macadamia oil is added, it is confirmed that the liquid oily composition has no compatibility with sebum when applied to the skin (compatibility 2).

[0062] Considering the relative relationship between the amount of sebum on the skin of an adult and the amount of cosmetics usually applied, when the liquid oil composition is applied to the skin, the amount of sebum mixed into the liquid oil composition is about 8 parts by mass relative to 100 parts by mass of the liquid oil composition. Regarding compatibility 2, in order to confirm the compatibility in a state close to that of the liquid oil composition mixed with sebum on the skin, "the compatibility when 8 parts by mass of macadamia nut oil is added relative to 100 parts by mass of the liquid oil composition" was used as the judgment standard of compatibility.

[0063] That is, the liquid oil composition of this embodiment having both compatibility 1 and compatibility 2 is a transparent and uniform liquid composition before being applied to the skin, but after being applied to the skin, the liquid oil composition and the sebum on the skin come into contact and mix, resulting in the disappearance of the compatibility of the liquid oil composition, and the separation of component (A) from component (B) and component (C). The separated component (A) forms a component (A) film on the skin (hereinafter, the component (A) film is sometimes referred to as a silicone film). In addition to exerting water repellency, the silicone film formed by separation of the liquid oil composition is also a silicone film with no tightness and softness compared to the cosmetic film formed using the prior art. In addition, the silicone film functions as a protective film, and therefore also exerts a secondary adhesion inhibition effect.

[0064] A conventional film-forming agent is composed of a solid substance and a solvent that dissolves the solid substance. The film-forming agent is applied to the skin, the solvent evaporates, and the solid substance remains on the skin and solidifies, thereby forming a film. It can be considered that since the film is solid, its shape cannot be freely changed and it cannot follow the movement of the skin, thus producing a feeling of tightness. On the other hand, it can be inferred that the organic silicon film formed in this embodiment is not solid but liquid, and does not solidify on the skin, so it is not easy to produce a feeling of tightness.

[0065] As described above, by applying a liquid oil composition satisfying compatibility 1 (transparent and uniform at 25°C) and compatibility 2 (incompatible in the presence of 8% by mass of macadamia oil) on the skin and mixing with sebum, a silicone film (component (A) film) is formed on the skin, and secondary adhesion inhibition and water repellency are exhibited based on the silicone film. In addition, the silicone film formed has no tight feeling and is soft.

[0066] That is, the liquid oil composition applied to the skin forms a coating film having a laminated structure, which is composed of a thin film composed of the liquid oil composition except component (A) and a silicone film formed on the surface of the thin film, in order from the skin side, due to the mixing of sebum into the liquid oil composition. Hereinafter, the thin film formed by the liquid oil composition except component (A) due to the mixing of sebum into the liquid oil composition is sometimes referred to as an "ester oil film".

[0067] As the effects of this embodiment, excellent secondary adhesion suppression and excellent water repellency with strength and durability are functions achieved by the silicone film formed on the surface of the coating film of the liquid oil composition. Then, by applying the liquid oil composition having compatibility 2 on the skin, the silicone film is formed on the surface of the thin film (ester oil film). Therefore, it can be considered that: even if the various effects such as secondary adhesion suppression of the liquid oil composition, the softness of the cosmetic film, the strength of water repellency, and the durability of water repellency are not confirmed by experiments, as long as the liquid oil composition of the present invention that satisfies the condition of compatibility 2 can achieve these effects.

[0068] <<Ingredients (A)>>

[0069] Next, the component (A) used in the liquid oil composition of the present invention will be described.

[0070] Silicone oil is a general term for liquid substances having a structure represented by the following general formula (1). As shown in the following formula (2), the structure of the R portion of the component (A) used in the liquid oil composition of this embodiment is a methyl group, and is generally called dimethyl silicone oil.

[0071]

[0072]

[0073] The kinematic viscosity of dimethicone increases with the degree of polymerization. The kinematic viscosity value is usually used to distinguish the types of dimethicone.

[0074] In the present invention and the specification of this application, kinematic viscosity refers to the value obtained by dividing the viscosity at 25°C by the density of the fluid viscous liquid at the same temperature. The unit of kinematic viscosity is usually square millimeters per second (mm 2 / s).

[0075] The viscosity of dimethicone oil can be measured using the method described in "55. Viscosity Measurement Method 2 Rotational Viscometer Method" of "Pharmaceutical Quasi-drug Raw Material Standards 2021 (Pharmaceuticals and Health Bureau, Ministry of Health, Labor and Welfare)". Specifically, the viscosity can be measured by the following method: using a B-type viscometer, appropriately selecting a rotor and a rotation speed so that the reading is 10 to 90, and reading the value 60 seconds after the start of rotation.

[0076] The density of dimethicone oil can be measured using a pycnometer.

[0077] The dimethyl silicone oil as the component (A) used in the liquid oil composition of the present embodiment has a kinematic viscosity of 4 to 12 mm at 25°C. 2 / s, preferably 5~12mm 2 / s, more preferably 5 to 10 mm 2 / s. When the kinematic viscosity of the dimethyl silicone oil of component (A) at 25°C is within the above range, a sufficient secondary adhesion inhibition effect can be obtained. As component (A), dimethyl silicone oils having a kinematic viscosity within the above range may be used alone or in combination of two or more.

[0078] As the dimethyl silicone oil of component (A), a commercially available product can be used. Examples of commercially available products include: 2 / s dimethyl silicone oil (trade name "KF-96L-5cs", manufactured by Shin-Etsu Chemical Co., Ltd.), with a kinematic viscosity of 10 mm at 25°C 2 / s dimethyl silicone oil (trade name "KF-96A-10cs", manufactured by Shin-Etsu Chemical Co., Ltd.).

[0079] <<Component (B) and Component (C)>>

[0080] Next, the component (B) and the component (C) used in the liquid oil composition of the present invention will be described.

[0081] Component (B) is an ester oil which is liquid at 25°C and has a compatibility value with dimethyl silicone oil of 1.75 or more. Component (C) is an ester oil which is liquid at 25°C and has a compatibility value with dimethyl silicone oil of less than 1.75.

[0082] [Dimethyl silicone oil compatibility value of ester oil]

[0083] The compatibility value of ester oil with dimethyl silicone oil can be calculated by the following formula (I).

[0084]

[0085] The "dimethyl silicone oil compatibility value of ester oil" is a value for evaluating the compatibility of ester oil and dimethyl silicone oil. The dimethyl silicone oil compatibility value of ester oil is calculated by the above formula (I) using the carbon branch value and oxygen value determined based on the molecular structure of the ester oil. The dimethyl silicone oil compatibility value of ester oil shows that the larger the value, the more easily the ester oil and dimethyl silicone oil are miscible, and the smaller the value, the less easily the ester oil and dimethyl silicone oil are miscible.

[0086] The carbon branch value is a value reflecting the number of terminal methyl groups in the ester oil that promotes the compatibility of the ester oil with the dimethyl silicone oil. The number "12" used in the calculation of the carbon branch value is the atomic weight of carbon.

[0087] Generally speaking, substances with similar structures in molecular structure are easily miscible with each other. As shown in the above formula (2), dimethyl silicone oil is a silicone oil (polydimethylsiloxane) having methyl groups on the side chain, and has multiple methyl groups in the molecular structure. Therefore, the more methyl groups the side chain of the ester oil has, the more miscible the ester oil and dimethyl silicone oil are.

[0088] On the other hand, the oxygen value is a value reflecting the polarity state of the oxygen atoms in the ester oil that hinder the compatibility between the ester oil and the dimethyl silicone oil. The number "16" used in the calculation of the oxygen value is the atomic weight of oxygen.

[0089] Dimethyl silicone oil is a silicone oil with a methyl group on the side chain and has low polarity. Therefore, the greater the polarity of the ester oil, the less compatible the ester oil and dimethyl silicone oil are. In this context, coefficients such as -3, 0.5, and -0.1 are used in the formula for calculating the oxygen value to indicate the contribution of the functional group to the compatibility.

[0090] Here, when the branched structure of the ester oil is determined, the number of carbon branches used to calculate the carbon branch value is a number obtained by "quaternary carbon number x 2 + tertiary carbon number".

[0091] When the branching structure of the ester oil is uncertain, the number of carbon branches used to calculate the carbon branching value can be obtained from 1 First, the fatty acids and / or alcohols constituting the ester oil are obtained. 1 HNMR spectrum. 1 The number of carbon branches of each fatty acid and alcohol is calculated from the HNMR spectrum. Thereafter, the number of carbon branches of the obtained ester oil is calculated from the fatty acid and alcohol for which the number of carbon branches is calculated.

[0092] The specific method is as follows. 1 The HNMR instrument is not particularly limited, and a commercially available one can be used.

[0093] As a pretreatment for analyzing the fatty acids and alcohols that constitute the ester oil, the ester oil to be analyzed can be hydrolyzed. First, the ester oil to be analyzed is saponified using potassium hydroxide. Then, the excess potassium hydroxide is neutralized using hydrochloric acid, and the generated alcohol is recovered by solvent extraction. The fatty acid saponification product after the alcohol is removed is neutralized again using hydrochloric acid, and the fatty acid is recovered by solvent extraction. The solvent is removed from the recovered alcohol and fatty acid, and the recovered product is used as 1 HNMR of samples.

[0094] First, the fatty acids and / or alcohols constituting the ester oil are 1 HNMR is used for measurement. In the obtained spectrum, the peak area attributed to the protons derived from the carboxyl group of the fatty acid or the hydroxyl group of the alcohol is set to 1, and the area ratio of the peak attributed to the protons derived from the methyl group is calculated. Next, the area ratio of the protons derived from the methyl group is divided by 3, and then 1, which is equivalent to the number of methyl groups at the end of the carbon main chain, is subtracted. The number obtained by this method is the number of carbon branches contained in the fatty acid or alcohol. Finally, according to the added molar ratio during the synthesis of the ester, the number of carbon branches of the fatty acids and / or alcohols constituting the ester oil is added, thereby obtaining the number of carbon branches of the ester oil. 1 The method of calculating the number of carbon branches from the HNMR spectrum is also applicable when the fatty acid and / or alcohol is a mixture and the number of branches is not an integer.

[0095] exist 1 In HNMR analysis, when CDCl3 is used as the solvent and tetramethylsilane is used as the standard substance, the chemical shift of the protons derived from the methyl group is in the range of 1.2 to 0.8 ppm, the chemical shift of the protons derived from the hydroxyl group is in the range of 4.0 to 4.5 ppm, and the chemical shift of the protons derived from the carboxyl group is in the range of 10 to 13 ppm.

[0096] [Derivation of formula (I)]

[0097] As described in the Examples below, the above formula (I) can be obtained as shown below.

[0098] First, in order to calculate the compatibility value of dimethyl silicone oil in ester oil, the mixture of dimethyl silicone oil of various kinematic viscosities and various ester oils in a mass ratio of 1:1 was studied to determine whether they were compatible at 25°C.

[0099] It is known that, generally speaking, the greater the viscosity of dimethicone oil, the more difficult it is to dissolve in ester oil. Therefore, since ester oil that is compatible with dimethicone oil with high viscosity is also compatible with dimethicone oil with lower viscosity, it can be compatible with dimethicone oil with a wide range of viscosities and is called ester oil with high compatibility with dimethicone oil.

[0100] Then, by 1The number of carbon branches of various ester oils used can be obtained from the HNMR spectrum, and the number of hydroxyl groups, ester groups, and ether groups can be obtained from the structure of the fatty acids and alcohols that constitute the ester oil and the hydroxyl value of the ester oil. The carbon branch value can be derived from the number of carbon branches, and the oxygen value can be derived from the number of hydroxyl groups, ester groups, and ether groups.

[0101] Then, by adjusting the mixture of dimethyl silicone oils of various kinematic viscosities and various ester oils in a mass ratio of 1:1, the compatibility at 25°C and the structural characteristics of the ester oil were matched, thereby deriving formula (I). According to formula (I), the sum of the carbon branch value and the oxygen value was multiplied by 10,000, and then divided by the square of the molecular weight of the ester oil, and the obtained value was taken as the compatibility value of the dimethyl silicone oil.

[0102] The more the ester oil has excellent compatibility with dimethicone oil, the greater the compatibility value of dimethicone oil derived from the structural characteristics of the ester oil. On the other hand, the less the ester oil has poor compatibility with dimethicone oil, the smaller the compatibility value of dimethicone oil derived from the structural characteristics of the ester oil.

[0103] For example, from the kinematic viscosity 10mm 2 The compatibility of the mixture of dimethyl silicone oil with a mass ratio of 1:1 and various ester oils with a mass ratio of 1:1 and the compatibility value of dimethyl silicone oil calculated using the above formula (I) can be used to determine that the compatibility value of dimethyl silicone oil is 1.75 or more and the ester oil with a kinematic viscosity of 10 mm 2 / s dimethyl silicone oil is miscible.

[0104] As such, even if the compatibility between an ester oil having a compatibility value of dimethyl silicone oil calculated by formula (I) of 1.75 or more and dimethyl silicone oil is not confirmed by experiment, it can be judged that it can be used as component (B). Similarly, even if the compatibility between an ester oil having a compatibility value of dimethyl silicone oil calculated by formula (I) of less than 1.75 and dimethyl silicone oil is not confirmed by experiment, it can be judged that it can be used as component (C).

[0105] Formula (I) of this embodiment can also be used as, for example, a kinematic viscosity of 5 mm 2 / s and 10mm 2 The compatibility of a mixture of at least two dimethyl silicone oils having different kinematic viscosities, such as dimethyl silicone oil having a kinematic viscosity of 0.1447 W / s and an ester oil, mixed at a mass ratio of 1:1 is used as a criterion for determining the compatibility of the mixture.

[0106] As the ester oil of component (B), any ester oil that is liquid at 25°C and has a compatibility value with dimethyl silicone oil of 1.75 or more can be used. Also, as the ester oil of component (C), any ester oil that is liquid at 25°C and has a compatibility value with dimethyl silicone oil of less than 1.75 can be used.

[0107] The ester oils as the components (B) and (C) are carboxylic acid esters which are compounds formed from alcohols and carboxylic acids, and may have a hydroxyl group or a carboxyl group in the structure.

[0108] As the alcohol constituting the carboxylic acid ester, an aliphatic alcohol or a polyhydric alcohol having 1 to 22 carbon atoms is preferred.

[0109] As the aliphatic alcohol constituting the carboxylic acid ester, an alcohol having 5 to 20 carbon atoms is preferred, and specifically, isononyl alcohol, tridecanol, 2-ethylhexanol, cetyl alcohol, octyldodecanol, and isostearyl alcohol are preferred.

[0110] The polyol constituting the carboxylic acid ester is preferably a divalent to 8valent polyol, more preferably a divalent to 6valent polyol having 2 to 16 carbon atoms, and specifically, propylene glycol, glycerol, dipropylene glycol, neopentyl glycol, trimethylolpropane, pentaerythritol, and dipentaerythritol are preferred.

[0111] It should be noted that methyl-branched isostearyl alcohol can be obtained by reducing isostearic acid generally used in industry. Isostearic acid generally used in industry is a carboxylic acid obtained by hydrogenating a monomer acid as a byproduct when synthesizing dimer acid. The raw material for the synthesis of the dimer acid is mainly oleic acid, but linoleic acid and linolenic acid may also be included. Therefore, isostearic acid widely used in industry has a side chain with an average of 1.3 methyl groups relative to the main chain (Inaba Keiichi, Hirano Jiro (editor), "New Edition of Fatty Acid Chemistry 2nd Edition", Xingshufang Co., Ltd., April 25, 1997, page 224).

[0112] On the other hand, 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctanoic acid is generally called "isostearic acid".

[0113] Therefore, in the following description, in order to distinguish the above two types of alcohols derived from isostearic acid, the substituent of the alcohol derived from the reduction of 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctanoic acid may be described as "(having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure on the aliphatic chain)".

[0114] As the carboxylic acid constituting the carboxylic acid ester, a fatty acid having 1 to 22 carbon atoms is preferred, and the carboxylic acid may also have a hydroxyl group or a carboxyl group. Specifically, caprylic acid, capric acid, 2-ethylhexanoic acid, isononanoic acid, palmitic acid, isostearic acid, lactic acid, malic acid, and hydroxystearic acid are preferred.

[0115] As described in the description of isostearyl alcohol, there are many compounds that are called "isostearic acid" despite their different structures. In the following description, 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctanoic acid and a substituent derived from the carboxylic acid may be described as "(having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure on the fatty chain)" as in the case of isostearyl alcohol.

[0116] The ester oil of component (B) is not particularly limited, and examples thereof include isononyl isononanoate [10.91], isotridecyl isononanoate [6.54], neopentyl glycol diethylhexanoate [6.28], glyceryl triethylhexanoate (triisooctanoin) [3.79], glyceryl triisostearate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure on the fatty chain) [3.78], diisostearyl malate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure on the fatty chain) [3.72], pentaerythritol Tetraethylhexanoate [3.31], neopentyl glycol dicaprate [3.28], propylene glycol di(caprylic acid / capric acid) ester [2.92], triisostearate polyglyceryl-2 (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure on the fatty chain) [2.68], cetyl ethylhexanoate [2.07], ethylhexyl palmitate [2.07], tri(caprylic acid / capric acid) ester [1.99], dipentaerythritol pentaisostearate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure on the fatty chain) [1.89], etc. The numbers in [ ] after the compound names are the compatibility values ​​of dimethyl silicone oils calculated from the structural characteristics of the ester oil using the above formula (I). As the ester oil of component (B), one or more of these can be used. Among these, the ester oil of component (B) is preferably isononyl isononanoate, isotridecyl isononanoate, neopentyl glycol diethylhexanoate, glyceryl triethylhexanoate, glyceryl triisostearate, diisostearyl malate, pentaerythritol tetraethylhexanoate, neopentyl glycol dicaprate, propylene glycol di(caprylate / caprate), polyglyceryl triisostearate-2, cetyl ethylhexanoate, glyceryl tri(caprylate / caprate) or dipentaerythritol pentaisostearate. In particular, diisostearyl malate is preferably used as the ester oil of component (B) from the viewpoint that it has a hydroxyl group in its structure but is compatible with dimethicone oil and has good compatibility with powder.

[0117] As the ester oil of the component (B), a commercially available ester oil can be used. As the commercially available products, various ester oils manufactured by Nissin Oillio Group Co., Ltd. can be used. Specifically, isononyl isononanoate (trade name "SALACOS 99"), isotridecyl isononanoate (trade name "913"), neopentyl glycol diethylhexanoate (trade name "SALACOS 525"), triethylhexanoin (trade name "TIO"), triisostearate (trade name "SALACOS 3318"), diisostearyl malate (trade name "COSMOL 222"), pentaerythritol tetraethylhexanoate (trade name "SALACOS 5408"), neopentyl glycol dicaprate (trade name "ESTEMOL N-01"), propylene glycol di(caprylic acid / capric acid) ester (trade name "SALACOS PR-85"), polyglyceryl-2 triisostearate (trade name "COSMOL 43N"), cetyl ethylhexanoate (trade name "SALACOS 816T”), ethylhexyl palmitate (trade name “SALACOS P-8”), caprylic / capric triglyceride (trade name “ODO”), and dipentaerythritol pentaisostearate (trade name “SALACOS DP-518N”).

[0118] The ester oil as component (C) is not particularly limited, and for example, propylene glycol diisostearate [1.71], trimethylolpropane triisostearate [1.36], pentaerythritol tetraisostearate [1.04], polyglyceryl-2 tetraisostearate [0.82], polyglyceryl-2 triisostearate [0.48], ethylhexyl hydroxystearate [-1.18], etc. The numbers in [] after the compound name are the dimethicone compatibility values ​​calculated from the structural characteristics of the ester oil using the above formula (I). As the ester oil of component (C), one or more of these can be used. In particular, from the viewpoint of having a small compatibility value of dimethicone and being more efficiently separated from dimethicone, ethylhexyl hydroxystearate is preferred.

[0119] As the ester oil of component (C), commercially available ester oils can be used. As the commercially available products, various ester oils manufactured by Nissin Oillio Group (KK) can be used, and specifically, propylene glycol diisostearate (trade name "SALACOS PR-17"), trimethylolpropane triisostearate (trade name "SALACOS 6318V"), pentaerythritol tetraisostearate (trade name "SALACOS 5418V"), polyglyceryl-2 tetraisostearate (trade name "COSMOL 44V"), polyglyceryl-2 triisostearate (trade name "COSMOL 43V"), ethylhexyl hydroxystearate (trade name "SALACOS EH"), etc. can be used.

[0120] The above-mentioned dimethyl silicone oil compatibility value of the ester oil is related to the compatibility when the component (A) and the ester oil are mixed at a mass ratio of 1:1. Specifically, among ester oils that are liquid at 25°C, there is compatibility when the ester oil having a dimethyl silicone oil compatibility value of 1.75 or more is mixed with the component (A) at a mass ratio of 1:1. On the other hand, among ester oils that are liquid at 25°C, there is no compatibility when the ester oil having a dimethyl silicone oil compatibility value of less than 1.75 is mixed with the component (A) at a mass ratio of 1:1. Therefore, the liquid oil composition of the present embodiment can also be shown as the following method without using the above-mentioned dimethyl silicone oil compatibility value.

[0121] That is, the liquid oil composition of the present embodiment contains the following dimethyl silicone oil (component (A2)) and the following ester oil (component (B2), component (C2)), is transparent and uniform at 25°C (compatibility 1), and component (A2) is separated from a mixture to which 8 parts by mass of macadamia oil is added relative to 100 parts by mass of the liquid oil composition (compatibility 2).

[0122] Component (A2): 1 or more components with a kinematic viscosity of 4 to 12 mm at 25°C 2 / s dimethyl silicone oil

[0123] Component (B2): one or more ester oils that are liquid at 25°C and are compatible with component (A) at a mass ratio of 1:1 (mass ratio of component (A): component (B2) = 1:1)

[0124] Component (C2): One or more ester oils that are liquid at 25°C and have no compatibility with component (A) when mixed at a mass ratio of 1:1 (mass ratio of component (A): component (C2) = 1:1)

[0125] Component (A2) is the same as the above-mentioned component (A).

[0126] As the ester oil of component (B2), any ester oil which is liquid at 25°C and has a compatibility coefficient with dimethyl silicone oil of 1.75 or more can be used. That is, any ester oil can be used as long as it is the ester oil of component (B).

[0127] As the ester oil of component (C2), an ester oil which is liquid at 25°C and has a dimethyl silicone oil compatibility coefficient of less than 1.75 can be used. In other words, any ester oil can be used as long as it is the ester oil of component (C).

[0128] The viscosity of the mixture of component (B2) and component (C2) at 25°C is preferably 10 to 1500 mPa･s, more preferably 30 to 1200 mPa･s, more preferably 50 to 1100 mPa･s, and most preferably 100 to 1000 mPa･s. By making the viscosity of the mixture of component (B2) and component (C2) at 25°C within the above range, the liquid oil composition of this embodiment is more likely to form a silicone film when mixed with sebum. The viscosity of the mixture of component (B) and component (C) at 25°C is also the same. Here, the viscosity of the mixture of component (B2) and component (C2) at 25°C can be measured, for example, by the following method: using a B-type viscometer, appropriately selecting a rotor and a rotation speed so that the reading is 10 to 90, and reading the value 60 seconds after the start of rotation.

[0129] In the liquid oil composition of the present embodiment, the mass ratio ((B) / (C)) of the component (B) to the component (C) is preferably 0.32 to 18.00, and more preferably 0.40 to 14.24.

[0130] In addition, in the liquid oil composition of the present embodiment, the mass ratio ({(B)+(C)} / (A)) of the total amount of component (B) and component (C) to component (A) is preferably 1.50 to 12.33, and more preferably 2.08 to 11.05. By satisfying the conditions of the above mass ratio ((B) / (C)) and the above mass ratio ({(B)+(C)} / (A)), the liquid oil composition of the present embodiment is more likely to form a silicone film when mixed with sebum. That is, by satisfying the conditions of the above mass ratio ((B) / (C)) and the above mass ratio ({(B)+(C)} / (A)), a higher secondary adhesion inhibition effect and excellent water repellency with strength and durability can be obtained. The mass ratio ((B2) / (C2)) is also the same as the above mass ratio ({(B2)+(C2)} / (A2)).

[0131] The following describes the combination and preferred proportion of component A, component B, and component C in the liquid oil composition of the present embodiment. In the following description, the sum of component A, component B, and component C is 100% by mass. In addition, in the following examples, the description at the end of dimethyl silicone oil shows the kinematic viscosity of dimethyl silicone oil at 25°C. For example, "dimethyl silicone oil 5cs" means dimethyl silicone oil with a kinematic viscosity of 5 centistokes (5cs). 1 centistoke is 1 mm 2 / s.

[0132] When component (A) is dimethicone 5-10cs, component (B) is glyceryl triethylhexanoate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 12.50-17.30% by mass, component (B) is preferably 31.40-41.20% by mass, and component (C) is preferably 45.00-53.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 0.59-0.92, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 4.78-7.00.

[0133] When component (A) is dimethicone 5cs, component (B) is triethylhexanoin, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 15.60 to 17.30% by mass, component (B) is preferably 31.40 to 34.70% by mass, and component (C) is preferably 48.00 to 53.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 0.59 to 0.72, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 4.78 to 5.41.

[0134] When component (A) is dimethicone oil 10cs, component (B) is isononyl isononanoate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 30.00 to 32.50% by mass, component (B) is preferably 30.00 to 32.50% by mass, and component (C) is preferably 35.00 to 40.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 0.75 to 0.93, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 2.08 to 2.33.

[0135] When component (A) is dimethicone oil 10cs, component (B) is isotridecyl isononanoate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 8.30 to 8.80 mass %, component (B) is preferably 24.70 to 26.20 mass %, and component (C) is preferably 65.00 to 67.00 mass %. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 0.37 to 0.40, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 10.36 to 11.05.

[0136] When component (A) is dimethicone oil 10cs, component (B) is neopentyl glycol diethylhexanoate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 9.00 to 9.50% by mass, component (B) is preferably 27.00 to 28.50% by mass, and component (C) is preferably 62.00 to 64.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 0.42 to 0.46, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 9.53 to 10.11.

[0137] When component (A) is dimethicone 10cs, component (B) is glyceryl triethylhexanoate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 12.50 to 13.80 mass %, component (B) is preferably 37.50 to 41.20 mass %, and component (C) is preferably 45.00 to 50.00 mass %. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 0.75 to 0.92, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 6.25 to 7.00.

[0138] When component (A) is dimethicone 10cs, component (B) is glyceryl triisostearate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 14.50 to 15.80% by mass, component (B) is preferably 43.50 to 47.20% by mass, and component (C) is preferably 37.00 to 42.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 1.04 to 1.28, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 5.33 to 5.90.

[0139] When component (A) is dimethicone oil 10cs, component (B) is pentaerythritol tetraethylhexanoate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 16.30 to 17.50% by mass, component (B) is preferably 48.70 to 52.50% by mass, and component (C) is preferably 30.00 to 35.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 1.39 to 1.75, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 4.71 to 5.13.

[0140] When component (A) is dimethicone oil 10cs, component (B) is neopentyl glycol dicaprate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 16.30 to 18.00% by mass, component (B) is preferably 48.70 to 54.00% by mass, and component (C) is preferably 28.00 to 35.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 1.39 to 1.93, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 4.56 to 5.13.

[0141] When component (A) is dimethicone 10cs, component (B) is propylene glycol di(caprylic acid / capric acid) ester, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 16.30 to 18.00% by mass, component (B) is preferably 48.70 to 54.00% by mass, and component (C) is preferably 28.00 to 35.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 1.39 to 1.93, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 4.56 to 5.13.

[0142] When component (A) is dimethicone 10cs, component (B) is polyglyceryl-2 triisostearate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 19.50 to 21.30% by mass, component (B) is preferably 58.50 to 63.70% by mass, and component (C) is preferably 15.00 to 22.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 2.66 to 4.25, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 3.69 to 4.13.

[0143] When component (A) is dimethicone 10cs, component (B) is cetyl ethylhexanoate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 11.80 to 13.00% by mass, component (B) is preferably 35.20 to 39.00% by mass, and component (C) is preferably 48.00 to 53.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 0.66 to 0.81, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 6.69 to 7.47.

[0144] When component (A) is dimethicone 10cs, component (B) is caprylic / capric triglyceride, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 21.30 to 23.80% by mass, component (B) is preferably 63.70 to 71.20% by mass, and component (C) is preferably 5.00 to 15.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 4.25 to 14.24, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 3.20 to 3.69.

[0145] When component (A) is dimethicone oil 10cs, component (B) is dipentaerythritol pentaisostearate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 20.00 to 22.00% by mass, component (B) is preferably 60.00 to 66.00% by mass, and component (C) is preferably 12.00 to 20.00% by mass. At this time, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 3.00 to 5.50, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 3.55 to 4.00.

[0146] When component (A) is dimethicone 10cs, component (B) is diisostearyl malate, and component (C) is propylene glycol diisostearate, component (A) is preferably 12.50 to 16.30% by mass, component (B) is preferably 37.50 to 48.70% by mass, and component (C) is preferably 35.00 to 50.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 0.75 to 1.39, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 5.13 to 7.00.

[0147] When component (A) is dimethicone 10cs, component (B) is diisostearyl malate, and component (C) is trimethylolpropane triisostearate, component (A) is preferably 18.80 to 19.50% by mass, component (B) is preferably 56.20 to 58.50% by mass, and component (C) is preferably 22.00 to 25.00% by mass. At this time, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 2.25 to 2.66, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 4.13 to 4.32.

[0148] When component (A) is dimethicone oil 10cs, component (B) is diisostearyl malate, and component (C) is pentaerythritol tetraisostearate, component (A) is preferably 18.80 to 20.00% by mass, component (B) is preferably 56.20 to 60.00% by mass, and component (C) is preferably 20.00 to 25.00% by mass. At this time, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 2.25 to 3.00, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 4.00 to 4.32.

[0149] When component (A) is dimethicone 10cs, component (B) is diisostearyl malate, and component (C) is polyglyceryl-2 triisostearate, component (A) is preferably 20.00 to 21.00% by mass, component (B) is preferably 60.00 to 63.00% by mass, and component (C) is preferably 16.00 to 20.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 3.00 to 3.94, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 3.76 to 4.00.

[0150] When component (A) is dimethicone 10cs, component (B) is diisostearyl malate, and component (C) is polyglyceryl-2 tetraisostearate, component (A) is preferably 18.80 to 20.00% by mass, component (B) is preferably 56.20 to 64.00% by mass, and component (C) is preferably 20.00 to 25.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 2.25 to 3.20, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 4.00 to 5.67.

[0151] When component (A) is dimethicone 10cs, component (B) is diisostearyl malate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 20.00 to 21.00% by mass, component (B) is preferably 60.00 to 63.00% by mass, and component (C) is preferably 16.00 to 20.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 3.00 to 3.94, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 3.76 to 4.00.

[0152] <Cosmetics>

[0153] Next, the cosmetic of the present invention will be described.

[0154] The cosmetic of this embodiment includes the liquid oil composition of the above embodiment. The cosmetic may consist of the above liquid oil composition alone, or may further include other components. When used as an oily component of a cosmetic, the content ratio of the above liquid oil composition relative to the entire cosmetic of the cosmetic is preferably 5 to 60% by mass, preferably 10 to 50% by mass, and more preferably 10 to 40% by mass.

[0155] The total amount of the component (A), component (B), and component (C) derived from the liquid oil composition contained in the cosmetic of the present embodiment is not particularly limited as long as the cosmetic has compatibility 2. The total content of the component (A), component (B), and component (C) relative to the entire cosmetic of the cosmetic of the present embodiment may be, for example, 5% by mass or more, preferably 10 to 60% by mass, more preferably 15 to 50% by mass or more, further preferably 20 to 45% by mass, and may be 100% by mass.

[0156] The cosmetic of the present invention may have any appearance such as transparent, translucent, or emulsified (white turbidity), and may be in any form such as liquid or cream.

[0157] The cosmetics using the liquid oily composition of the present invention are not particularly limited, and examples thereof include makeup cosmetics such as foundation, sunscreen cosmetics, and skin care cosmetics such as emulsions, creams, serums, and lotions.

[0158] (ingredient (D))

[0159] The cosmetic according to this embodiment may further contain powder as a component (D).

[0160] As the powder of component (D), any powder generally used in cosmetics can be used. The powder of component (D) is not particularly limited, and for example, extender pigments, coloring pigments, pearlescent pigments, etc. can be used.

[0161] The powder shape of the component (D) is not particularly limited, and may be any shape such as spherical, plate-like, needle-like, granular, spindle-like, flaky, or irregular.

[0162] The extender pigment is not particularly limited, and examples thereof include: inorganic pigments such as silicic acid, anhydrous silicic acid, magnesium silicate, talc, sericite, mica, kaolin, clay, bentonite, bismuth oxychloride, zirconium oxide, magnesium oxide, zinc oxide, aluminum oxide, calcium sulfate, barium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, and their composite powders; organic powders composed of polyamide, polyester, polypropylene, polystyrene, polyurethane, nylon, silicone resin, vinyl resin, urea resin, phenol resin, silicone resin, acrylic resin, melamine resin, epoxy resin, polycarbonate resin, divinylbenzene-styrene copolymer, silk powder, cellulose, Nε-lauroyl-L-lysine, and the like, and their composite powders; composite powders of the above-mentioned inorganic powders and the above-mentioned organic powders, etc.

[0163] There are no particular limitations on the coloring pigments, and examples thereof include metal oxides such as titanium dioxide, zinc oxide, yellow iron oxide, red iron oxide, black iron oxide, Prussian blue, ultramarine, chromium oxide, and chromium hydroxide; metal complexes such as manganese violet and cobalt titanate; inorganic pigments such as carbon black; organic pigments such as tar-based pigments and precipitated pigments; and natural pigments such as carmine.

[0164] The pearlescent pigment is not particularly limited, and for example, mica and synthetic phlogopite coated with colorants such as titanium dioxide, iron oxide, silicon oxide, Prussian blue, chromium oxide, carmine, and organic pigments can be used. These powders can be used after various surface treatments such as water repellent treatment and water / oil repellent treatment based on the usual method.

[0165] By including a powder having an ultraviolet shielding effect such as a metal oxide powder as the powder of the component (D), a sunscreen cosmetic (cosmetics for sunscreen cream) can be produced.

[0166] The metal oxide powder having an ultraviolet shielding effect is not particularly limited, but for example, a powder having an average particle size of 10 to 100 nm is more preferred because it can suppress powder floating when applied to the skin.

[0167] The metal oxide powder having an ultraviolet shielding effect is not particularly limited, and examples thereof include titanium oxide, zinc oxide, zirconium oxide, cerium oxide, and the like, and these may be used alone or in combination of two or more.

[0168] The shape is not particularly limited, and examples thereof include spherical, needle-like, spindle-like, plate-like, and flake-like shapes. In order to reduce the surface activity, the nanoparticles may be treated with an inorganic compound such as silica or alumina.

[0169] When the cosmetics of the present embodiment include component (D), the content ratio of component (D) relative to the entire cosmetics varies depending on the type of cosmetics, and is preferably 1 to 90% by mass, more preferably 1 to 60% by mass, and further preferably 1 to 30% by mass. For example, when the cosmetics of the present embodiment are water-in-oil emulsified foundation, emulsified eye shadow, or sunscreen, the content of component (D) in the cosmetics is preferably 1 to 30% by mass.

[0170] (Component (E) and component (F))

[0171] The cosmetic of this embodiment may further contain water as a component (E) and a surfactant as a component (F).

[0172] By including these components, the cosmetic of this embodiment can be an emulsified cosmetic. The cosmetic of this embodiment can be a water-in-oil emulsified cosmetic (W / O emulsified cosmetic) or an oil-in-water emulsified cosmetic (O / W emulsified cosmetic).

[0173] The water of the component (E) is not particularly limited, and any water such as ion-exchanged water, distilled water, fruit-derived water, and deep ocean water can be used.

[0174] The content ratio of the component (E) in the cosmetics of the present embodiment including the component (E) is not particularly limited, and can be appropriately adjusted in consideration of the type of cosmetics, etc. The content ratio of the component (E) in the cosmetics of the present embodiment is preferably 1 to 80% by mass, more preferably 10 to 70% by mass, and further preferably 20 to 60% by mass.

[0175] As the surfactant of component (F), any surfactant generally used in cosmetics can be used, among which nonionic surfactants such as polyoxyethylene-modified silicone oil, polyglycerol fatty acid ester, polyoxyethylene alkyl, polyoxyethylene fatty acid ester, polyoxyethylene hydrogenated castor oil are preferred.

[0176] The content ratio of the ingredient (F) in the cosmetic of the present embodiment including the ingredient (F) is not particularly limited and can be appropriately adjusted in consideration of the type of cosmetic, etc. The ingredient in the cosmetic of the present embodiment is preferably 0.01 to 10% by mass, more preferably 0.05 to 5% by mass, and even more preferably 0.1 to 5% by mass.

[0177] The cosmetics of the present invention may further contain additives generally added to cosmetics within the range that does not impair the effects of the present invention. Examples of such additives include antioxidants, auxiliary antioxidants, preservatives, ultraviolet absorbers, polyols, water-soluble polymers, pH adjusters, inorganic salts or organic acid salts, chelating agents, vitamins, organic solvents, fragrances, various extracts, etc. These additives may be used alone or in combination of two or more.

[0178] The antioxidant is not particularly limited, and examples thereof include fat-soluble vitamin C derivatives, tocopherols and their derivatives and salts thereof, butylated hydroxytoluene, butylated hydroxyanisole, and gallic acid esters, etc. The antioxidant may be used alone or in combination of two or more.

[0179] The auxiliary antioxidant is not particularly limited, and examples thereof include phosphoric acid, citric acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, cyclohexaphosphate, phytic acid, and ethylenediaminetetraacetic acid, etc. The auxiliary antioxidant may be used alone or in combination of two or more.

[0180] The preservative is not particularly limited, and examples thereof include methylparaben, ethylparaben, butylparaben, phenoxyethanol, etc. The preservative may be used alone or in combination of two or more.

[0181] The ultraviolet absorber is not limited to the following, and examples thereof include: para-aminobenzoic acid (hereinafter referred to as PABA), PABA monoglyceride, N,N-dipropoxy PABA ethyl ester, N,N-diethoxy PABA ethyl ester, N,N-dimethyl PABA ethyl ester, N,N-dimethyl PABA butyl ester, N,N-dimethyl PABA ethyl ester and other benzoic acid-based ultraviolet absorbers; N-acetylanthranilic acid-3,3,5-trimethylcyclohexyl ester and other anthranilic acid-based ultraviolet absorbers; salicylic acid Salicylic acid-based ultraviolet absorbers such as amyl salicylate, menthyl salicylate, homosalate, octyl salicylate, phenyl salicylate, benzyl salicylate, and isopropyl phenyl salicylate; octyl cinnamate, ethyl 4-isopropyl cinnamate, methyl 2,5-diisopropyl cinnamate, ethyl 2,4-diisopropyl cinnamate, methyl 2,4-diisopropyl cinnamate, propyl p-methoxycinnamate, isopropyl p-methoxycinnamate, isoamyl p-methoxycinnamate, octyl p-methoxycinnamate (2-ethylhexyl p-methoxycinnamate), 2-ethoxyethyl Cinnamic acid-based ultraviolet light absorbers such as 2-ethylhexyl-p-methoxycinnamate, cyclohexyl-p-methoxycinnamate, ethyl α-cyano-β-phenylcinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glyceryl mono-2-ethylhexanoyl-bis-p-methoxycinnamate; 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone Benzophenone-based ultraviolet absorbers such as benzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4-phenylbenzophenone, 2-ethylhexyl-4'-phenyl-benzophenone-2-carboxylate, 2-hydroxy-4-n-octyloxybenzophenone, 4-hydroxy-3-carboxybenzophenone; 3-(4'-methylbenzylidene)-d,l-camphor, 3-benzylidene-d,l-camphor, urocanic acid, ethyl urocanate, 2-phenyl-5-methylbenzophenone azole, 2,2'-hydroxy-5-methylphenylbenzotriazole, 2-(2'-hydroxy-5'-tert-octylphenyl)benzotriazole, 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, dibenzylhydrazine, 4,4'-dimethoxydiphenylmethane, 4-methoxy-4'-tert-butyldibenzoylmethane, 5-(3,3-dimethyl-2-norbornene)-3-pentan-2-one, and 2,4,6-trianilino-p-(carbon-2'-ethylhexyl-1'-oxy)1,3,5-triazine, 4-tert-butyl-4'-methoxydibenzoylmethane, ethylamine hydroxybenzoyl hexyl benzoate, ethylhexyl triazine, tert-butyl methoxydibenzoylmethane, bis-ethylhexyloxyphenol methoxyphenyl triazine, diethylhexyl butyramido triazine, dibenzophenone-3, etc. The ultraviolet absorber may be used alone or in combination of two or more.

[0182] Examples of the polyol include, but are not limited to, propylene glycol (1,2-propylene glycol), 1,3-propylene glycol, 1,3-butylene glycol (1,3-butylene glycol), pentylene glycol (1,2-pentanediol), neopentyl glycol (2,2-dimethyl-1,3-propylene glycol), isoprene glycol (3-methyl-1,3-butylene glycol), dipropylene glycol, glycerol, diglycerol, polyglycerol, polyethylene glycol, pentaerythritol, dipentaerythritol, sorbitol, and sorbitan. The polyol may be used alone or in combination of two or more.

[0183] The water-soluble polymer is not particularly limited and may be a natural water-soluble polymer, a semi-synthetic water-soluble polymer, or a synthetic water-soluble polymer. The water-soluble thickener contained in the cosmetic of the present invention may be used alone or in combination of two or more.

[0184] The natural water-soluble polymer is not particularly limited, and examples thereof include plant polymers such as agar, glucomannan, gum arabic, gum tragacanth, galactan, guar gum, locust bean gum, karaya gum, carrageenan, pectin, marmelo, algae colloid (brown algae extract), starch (rice, corn, potato, wheat); microbial polymers such as xanthan gum, dextran, succinoglycan, pullulan; and animal polymers such as collagen, casein, albumin, gelatin, etc.

[0185] The semi-synthetic water-soluble polymer is not particularly limited, and examples thereof include: starch-based polymers such as carboxymethyl starch and methylhydroxypropyl starch; cellulose-based polymers such as methylcellulose, nitrocellulose, hydroxypropyl methylcellulose, sodium cellulose sulfate, hydroxypropyl cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose, crystalline cellulose, and powdered cellulose; and alginic acid-based polymers such as sodium alginate and propylene glycol alginate.

[0186] There are no particular limitations on the synthetic water-soluble polymers, and examples thereof include: ethylene-based polymers such as polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyrrolidone, and carboxyvinyl polymers; polyoxyethylene-based polymers such as polyethylene glycol 20000, 40000, and 60000; polyoxyethylene-polyoxypropylene ether copolymer-based polymers; acrylic-based polymers such as sodium polyacrylate, polyethyl acrylate, and polyacrylamide; polyethylene imine, and cationic polymers, etc.

[0187] The pH adjuster is not particularly limited, and examples thereof include edetic acid, edetate disodium, citric acid, sodium citrate, sodium hydroxide, potassium hydroxide, triethanolamine, etc. The pH adjuster may be used alone or in combination of two or more.

[0188] The inorganic salt is not particularly limited, and examples thereof include sodium chloride, potassium chloride, magnesium chloride, sodium sulfate, potassium sulfate, magnesium sulfate, etc. Examples of the organic acid salt include citric acid, malic acid, tartaric acid and salts thereof, ascorbic acid and salts thereof, ascorbic acid derivatives and salts thereof, etc.

[0189] The chelating agent is not particularly limited, and examples thereof include edetate disodium, edetate salts, and hydroxyethylidene diphosphonic acid. The chelating agent may be used alone or in combination of two or more.

[0190] The vitamins are not particularly limited, and examples thereof include vitamin A, vitamin B1, vitamin B2, vitamin B6, vitamin E, vitamin K and derivatives thereof, pantothenic acid and derivatives thereof, and biotin.

[0191] The extracts are not particularly limited, and examples thereof include plant extracts such as aloe, witch hazel, hamamelis, cucumber, lemon, lavender, and rose.

[0192] Example

[0193] Hereinafter, the present invention will be further described in detail based on specific embodiments. It should be noted that the present invention is not limited to the contents of the embodiments shown below.

[0194] [1. Evaluation of liquid oily composition]

[0195] Table 1 shows the correspondence between the component (B) and the component (C) and the abbreviations.

[0196] Table 2 shows the compatibility test results of dimethyl silicone oils of various kinematic viscosities and the compatibility values ​​of dimethyl silicone oils for component (B) and component (C).

[0197] Table 3 shows the compatibility value of dimethicone oil and the molecular structure factors used in the calculation of the compatibility value of dimethicone oil.

[0198] The compatibility of dimethyl silicone oil and component (B) or component (C) was prepared and evaluated according to [Preparation of liquid oil composition and evaluation of compatibility 1] described later.

[0199] As a result, it was confirmed that the ester oil compatible with dimethicone oil had a dimethicone oil compatibility coefficient of 1.75 or more, while it was confirmed that the ester oil incompatible with dimethicone oil had a dimethicone oil compatibility coefficient of less than 1.75.

[0200]

[0201]

[0202]

[0203] The dimethyl silicone oils used were all manufactured by Shin-Etsu Chemical Co., Ltd. The following dimethyl silicone oils were used: The kinematic viscosity at 25°C was 1 mm 2 / s of dimethyl silicone oil with a trade name of "KF-96A-1cs" (hereinafter referred to as "dimethyl silicone oil 1cs") and a kinematic viscosity of 2mm 2 / s of dimethyl silicone oil with the trade name "KF-96L-2cs" (hereinafter referred to as "dimethyl silicone oil 2cs") and a kinematic viscosity of 5mm 2 / s of dimethyl silicone oil with the trade name "KF-96A-5cs" (hereinafter referred to as "dimethyl silicone oil 5cs") and a kinematic viscosity of 10 mm 2 / s of dimethyl silicone oil with a trade name of "KF-96A-10cs" (hereinafter referred to as "dimethyl silicone oil 10cs") and a kinematic viscosity of 20 mm 2 / s of dimethyl silicone oil with a trade name of "KF-96A-20cs" (hereinafter referred to as "dimethyl silicone oil 20cs") and a kinematic viscosity of 100mm 2 / s product name "KF-96A-100cs" (hereinafter referred to as "dimethyl silicone oil 100cs") dimethyl silicone oil, kinematic viscosity of 1 million mm 2 / s of dimethyl silicone oil with a product name of "KF-96H-1 million cs" (hereinafter referred to as "dimethyl silicone oil 1 million cs"). Hereinafter, dimethyl silicone oil not corresponding to component (A) may be referred to as component (A').

[0204] As component (B), all of them were commercial products manufactured by Nissin Oillio Group Co., Ltd., and used were isononyl isononanoate (trade name “SALACOS 99”), isotridecyl isononanoate (trade name “SALACOS 913”), neopentyl glycol diethylhexanoate (trade name “SALACOS 525”), glyceryl triethylhexanoate (trade name “TIO”), glyceryl triisostearate (trade name “SALACOS 3318”), diisostearyl malate (trade name “COSMOL 222”), pentaerythritol tetraethylhexanoate (trade name “SALACOS 5408”), neopentyl glycol dicaprate (trade name “ESTEMOL N-01”), propylene glycol di(caprylate / caprate) (trade name “SALACOS PR-85”), polyglyceryl-2 triisostearate (trade name “COSMOL 43N”), cetyl ethylhexanoate (trade name “SALACOS 816T”), ethylhexyl palmitate (trade name “SALACOS P-8”), caprylic / capric triglyceride (trade name “ODO”), and dipentaerythritol pentaisostearate (trade name “SALACOS DP-518N”).

[0205] As component (C), all commercial products manufactured by Nissin Oillio Group Co., Ltd. were used, including propylene glycol diisostearate (trade name "SALACOS PR-17"), trimethylolpropane triisostearate (trade name "SALACOS 6318V"), pentaerythritol tetraisostearate (trade name "SALACOS 5418V"), polyglyceryl-2 tetraisostearate (trade name "COSMOL 44V"), polyglyceryl-2 triisostearate (trade name "COSMOL 43V"), and ethylhexyl hydroxystearate (trade name "SALACOS EH").

[0206] The liquid oil-based composition according to one embodiment of the present invention will be exemplified.

[0207] The formulation (mass %) of the liquid oil-based composition and the evaluation of the liquid oil-based composition are shown in Tables 4 to 14. The numerical values ​​in the component columns of Tables 4 to 14 respectively mean mass %.

[0208] (Raw materials for liquid oily composition)

[0209] As a pigment, iron oxide (trade name "OTS-2 RED R-516") manufactured by Daito Kasei Co., Ltd. was used.

[0210] As macadamia oil, macadamia oil (trade name “refined macadamia oil”) manufactured by Yokoseki Oil & Fats Industry Co., Ltd. was used.

[0211] [Method for preparing liquid oily composition]

[0212] The components (A) or (A'), (B) and (C) shown in Tables 4 to 14 were weighed in the same spiral tube and then shaken thoroughly to prepare liquid oil compositions.

[0213] For the liquid oil compositions obtained in Tables 4 to 7, compatibility 1, compatibility 2, viscosity of the mixture of component (B) and component (C), secondary adhesion inhibitory effect of pigments, strength of water repellency, and durability of water repellency were studied by the method described below, and a comprehensive evaluation (secondary adhesion inhibitory effect of pigments, strength and durability of water repellency) was performed.

[0214] In addition, the liquid oil compositions obtained in Tables 8 to 14 were examined for compatibility 1 and compatibility 2 by the method described below.

[0215] [Evaluation method of compatibility 1]

[0216] The spiral tube containing the prepared liquid oil composition was left at 25° C. for 5 minutes. Thereafter, the appearance of the liquid oil composition was visually checked, and the compatibility was evaluated using the evaluation criteria of compatibility 1 shown below. The compatibility of the prepared liquid oil composition was defined as compatibility 1.

[0217] [Evaluation criteria for compatibility 1]

[0218] S: At 25°C, the appearance is transparent and uniform, and there is no separation, haziness, or turbidity, and the two substances are compatible.

[0219] IS: At 25°C, the appearance is separated, hazy, and turbid, indicating incompatibility.

[0220] The liquid oil composition of the present invention is such that the mixture of component (A), component (B) and component (C) is transparent and uniform, that is, the compatibility 1 evaluation is "S".

[0221] [Evaluation method of compatibility 2]

[0222] 8 parts by mass of macadamia oil was added to 100 parts by mass of the liquid oily mixture evaluated for compatibility 1, and then the mixture was shaken and mixed thoroughly. The spiral tube was then left at 25° C. for 5 minutes. Thereafter, the appearance of the liquid oily composition was visually confirmed, and the compatibility was evaluated using the evaluation criteria for compatibility 2 shown below. The compatibility of the liquid oily composition after adding macadamia oil to the liquid oily composition was defined as compatibility 2.

[0223] [Evaluation criteria for compatibility 2]

[0224] S: The appearance is transparent and uniform, without separation, haziness or turbidity, and the two materials are compatible.

[0225] IS: The appearance is separated, hazy, and turbid, indicating incompatibility.

[0226] The liquid oil composition of the present invention is such that when 8 parts by mass of macadamia nut oil is added to 100 parts by mass of the liquid oil composition, the composition is not miscible with the oil, that is, the compatibility 2 is evaluated as “IS”.

[0227] [Evaluation of Compatibility 1 and Compatibility 2]

[0228] When the compatibility 1 of the liquid oil composition is evaluated as "S" and the compatibility 2 is evaluated as "IS", the liquid oil composition achieves the effects of the present invention.

[0229] [Viscosity of a mixture of component (B) and component (C)]

[0230] The viscosity of the mixture of component (B) and component (C) at 25° C. was measured using a B-type viscometer. In the viscosity measurement, the rotor and the rotation speed were appropriately selected so that the reading was 10 to 90, and the value was read 60 seconds after the start of rotation and converted into a viscosity value.

[0231] [Evaluation method for the effect of suppressing secondary adhesion of pigment]

[0232] (I) Component (A), component (B) and component (C) were blended as shown in Tables 4, 5, 6 and 7 to obtain a liquid oily composition. A pigment was added in an amount of 5% by mass relative to the total mass of the obtained liquid oily composition. Iron oxide was used as the pigment. Thereafter, the mixture was placed in an ultrasonic cleaning machine and subjected to ultrasonic treatment for 60 minutes while being shaken and mixed from time to time.

[0233] (II) A 3 cm x 3 cm area was prepared on the inner part of the forearm after washing and removing sebum. 3 μL of macadamia nut oil was applied to the prepared area as a substitute for the removed sebum.

[0234] (III) After applying the macadamia nut oil, 9 μL of the liquid oil composition containing the pigment prepared in (I) was applied and allowed to stand for 3 minutes.

[0235] (IV) The applied part was covered with a tissue and lightly pressed from above. Thereafter, the tissue was peeled off and the transfer of the pigment on the tissue was evaluated.

[0236] [Calculation of secondary attachment area]

[0237] The facial tissue was photographed at a height of 25 cm from the photographed object (facial tissue), and the transfer of the pigment on the facial tissue was evaluated by image processing of the photographed image. Using the image processing software "imageJ", the image processing conditions included the entire transfer range and were adjusted to be the center. After binarization, the area of ​​the black part was calculated. For the binarization process, first, the photographed image (color image) was converted into a gray scale image through 8-bit conversion. After that, the gray scale image pixel value: 0~195 range is regarded as black, and the pixel value: 196~255 range is regarded as white, and the binarization process is performed.

[0238] The photographs (actual shots) of Example 1 and Comparative Example 1 and the binarized images of these photographs are shown in FIG. Figure 1 .

[0239] [Evaluation criteria for suppression of secondary adhesion of pigment]

[0240] The secondary adhesion suppression of the pigment was evaluated using the ratio of the detection area of ​​the black portion calculated in [Calculation Conditions of Secondary Adhesion Area].

[0241] A: The detection area is less than 25%.

[0242] B: The detection area is greater than 25% and less than 28%.

[0243] C: The detection area is greater than 28% and less than 30%.

[0244] D: The detection area is more than 30%.

[0245] D with a detection area of ​​30% or more was judged to be ineffective.

[0246] [Evaluation method of water repellency strength]

[0247] (I) 3 μL of macadamia nut oil was applied to a 50 mm×50 mm PMMA plate.

[0248] (II) 9 μL of the liquid oil composition prepared with the formulations shown in Tables 3 and 4 was applied thereto.

[0249] (III) After leaving the plate to stand for 3 minutes, 20 μL of ion-exchanged water was dropped onto the coating film on the plate, and the plate was tilted to measure the angle at which the water droplet started to move.

[0250] [Evaluation criteria for water repellency strength]

[0251] A: Start moving when the board's tilt angle is less than 40 degrees.

[0252] B: The movement starts when the inclination angle of the board is 40 degrees or more and less than 41 degrees.

[0253] C: The movement starts when the inclination angle of the board is 42 degrees or more and less than 43 degrees.

[0254] D: The plate does not move even when the inclination angle is 43 degrees or more.

[0255] [Evaluation method for the durability of water repellency]

[0256] (I) A PMMA plate prepared by the same method as in [Evaluation method of water repellency] was immersed in ion exchange water kept at 40° C. for 10 minutes and then naturally dried.

[0257] (II) Thereafter, 20 μL of ion-exchanged water was dropped onto the coating film on the plate, and the plate was tilted to measure the angle at which the water droplet started to move.

[0258] [Evaluation criteria for the durability of water repellency]

[0259] A: Start moving when the board's tilt angle is less than 34 degrees.

[0260] B: The movement starts when the inclination angle of the board is 34 degrees or more and less than 35 degrees.

[0261] C: The movement starts when the inclination angle of the board is 35 degrees or more and less than 36 degrees.

[0262] D: The plate does not move even when the inclination angle is 36 degrees or more.

[0263] [Comprehensive evaluation of the effect of suppressing secondary adhesion of pigments, strength of water repellency and durability]

[0264] The evaluation of the secondary adhesion inhibitory effect of the pigment, the strength of water repellency, and the lasting power of water repellency of the liquid oil composition to be evaluated was scored, and the scores were divided into 4 points for A, 3 points for B, 2 points for C, and 1 point for D, and the sum of the evaluation scores was used as the comprehensive evaluation score. However, in the scoring of the secondary adhesion inhibitory effect of the pigment, the strength of water repellency, and the lasting power of water repellency of the liquid oil composition to be evaluated, a liquid oil composition that received a D rating in any item was judged to have not achieved the effect of the present invention.

[0265]

[0266]

[0267]

[0268]

[0269]

[0270]

[0271]

[0272]

[0273]

[0274]

[0275]

[0276] From the results of Tables 4 to 7, it was confirmed that the liquid oil compositions of Examples 1 to 7, which were evaluated as S (compatible) for compatibility 1 and IS (not compatible) for compatibility 2 by using dimethicone 5cs or dimethicone 10cs as component (A), had excellent secondary adhesion inhibition effect of pigments and excellent water repellency with strength and durability. It is presumed that this is because the composition is mixed with sebum and component (A) is separated by applying it on the skin, thereby forming a silicone film on the surface.

[0277] On the other hand, the liquid oil composition of Comparative Example 1 is a liquid oil composition that uses dimethicone oil 10cs as component (A) but does not contain component (C), and the compatibility 1 and compatibility 2 are evaluated as S (compatibility). As a result, it is a liquid oil composition with low secondary adhesion inhibition effect of pigments, strength and durability of water repellency. In addition, the liquid oil composition of Comparative Example 2 is a liquid oil composition that uses dimethicone oil 10cs as component (A) but does not contain component (B), and the compatibility 1 and compatibility 2 are evaluated as IS (no compatibility). The liquid oil composition of Comparative Example 2 is in an uneven state, so the secondary adhesion inhibition effect, strength and durability of water repellency were not evaluated.

[0278] In addition, the liquid oil compositions of Comparative Examples 3 and 5 used dimethyl silicone oil 10cs as component (A), but were evaluated as IS (no compatibility) for compatibility 1 and compatibility 2. Since the liquid oil compositions of Comparative Examples 3 and 5 were in a non-uniform state, the secondary adhesion inhibition effect, water repellency strength, and durability were not evaluated.

[0279] In addition, the liquid oil compositions of Comparative Examples 4, 6 and 7 use dimethyl silicone oil 10cs as component (A), but the compatibility 1 and compatibility 2 are evaluated as S (compatibility is present), and the secondary adhesion inhibition effect of the pigment, the strength of water repellency and the durability are low.

[0280] The liquid oil composition of Comparative Example 8 uses dimethyl silicone oil 5cs as component (A), but the compatibility 1 and compatibility 2 are evaluated as S (compatible). Judging from the evaluation results of Comparative Examples 4, 6, and 7, which have the same evaluation of compatibility, the liquid oil composition of Comparative Example 8 is likely to be a liquid oil composition with a low secondary adhesion inhibitory effect of the pigment, and low strength and durability of water repellency.

[0281] In addition, the liquid oil composition of Comparative Example 9 used dimethyl silicone oil 5cs as component (A), but the compatibility 1 and compatibility 2 were evaluated as IS (no compatibility). The liquid oil composition of Comparative Example 9 was in a non-uniform state, so the secondary adhesion inhibition effect, water repellency strength and durability were not evaluated.

[0282] Next, the liquid oil compositions of Comparative Examples 10 and 11 using dimethicone oil 20cs were evaluated as S (compatible) for compatibility 1 and IS (not compatible) for compatibility 2, but the secondary adhesion inhibition effect of the pigment was low. From this result, it can be seen that dimethicone oil 20cs cannot be used as the dimethicone oil of component (A).

[0283] In addition, the compatibility 1 and compatibility 2 of the liquid oil composition of Comparative Example 12 using dimethyl silicone oil 20cs were evaluated as S (compatibility). Judging from the evaluation results of Comparative Examples 4, 6, and 7, which were evaluated in the same way as for compatibility, the liquid oil composition of Comparative Example 12 is likely to be a liquid oil composition with a low secondary adhesion inhibitory effect of the pigment, water repellency strength, and durability.

[0284] The liquid oil composition of Comparative Example 13 using dimethyl silicone oil 20cs was evaluated as IS (no compatibility) in terms of compatibility 1 and compatibility 2. Since the liquid oil composition of Comparative Example 13 was in a non-uniform state, the secondary adhesion inhibition effect, water repellency strength, and durability were not evaluated.

[0285] Comparative Example 14, in which dimethicone oil 10cs was replaced by dimethicone oil 1cs in the formulation of Example 6, and Comparative Example 15, in which dimethicone oil 10cs was replaced by dimethicone oil 2cs, were evaluated as S (having compatibility) for compatibility 1 and compatibility 2 of the liquid oil composition. Judging from the evaluation results of Comparative Examples 4, 6, and 7, which were evaluated in the same way as for compatibility, the liquid oil compositions of Comparative Examples 14 and 15 are likely to be liquid oil compositions with low secondary adhesion inhibition effect of pigments, strength of water repellency, and durability. From this result, it can be seen that dimethicone oil 1cs and dimethicone oil 2cs cannot be used as the dimethicone oil of component (A).

[0286] These results show that when the compatibility 1 was evaluated as "S" and the compatibility 2 was evaluated as "IS", an organic silicone film was formed from the separated dimethyl silicone oil, and as a result, the effect of the present invention was exerted.

[0287] The liquid oil compositions of Examples 8 to 41 in Tables 8 to 10 and 13 were not evaluated for the secondary adhesion inhibitory effect of pigments and the strength and durability of water repellency. However, since dimethicone 10cs was used as component (A), compatibility 1 was evaluated as S (compatibility was present) and compatibility 2 was evaluated as IS (no compatibility), it was judged from the evaluation results of Examples 1 to 5 which also used dimethicone 10cs as component (A) and had the same compatibility evaluation that the liquid oil compositions of Examples 8 to 41 were highly likely to be oil compositions having excellent secondary adhesion inhibitory effect of pigments and excellent water repellency with strength and durability.

[0288] In addition, the evaluation of the secondary adhesion inhibitory effect of the pigment, and the strength and durability of the water repellency was not performed for the liquid oil compositions of Comparative Examples 16 to 49 in Tables 10 to 12 and Table 14. However, the compatibility 1 and compatibility 2 of the liquid oil compositions of the comparative examples were evaluated as S (compatibility), and judging from the evaluation results of Comparative Examples 4, 6, and 7, which used dimethyl silicone oil 10cs as component (A) and had the same compatibility evaluation, it is highly likely that these are also liquid oil compositions with low secondary adhesion inhibitory effect of the pigment, strength and durability of the water repellency.

[0289] In addition, the liquid oil compositions of the comparative examples in which compatibility 1 and compatibility 2 in Tables 10 to 12 and 14 were evaluated as IS (no compatibility) were in a non-uniform state, and thus the secondary adhesion inhibition effect, water repellency strength, and durability were not evaluated.

[0290] [2. Evaluation of cosmetics]

[0291] Next, another embodiment of the present invention studied cosmetics containing liquid oily compositions. The cosmetics of Example 42, Example 43, and Comparative Examples 50 to 54 shown in Tables 15 and 16 were prepared by the method described below and evaluated according to the evaluation method and evaluation criteria described below. For water-in-oil foundation, the "secondary adhesion inhibition effect of cosmetics", "softness of cosmetic film", "strength of water repellency", and "sustainability of water repellency" were evaluated. In addition, for oil-in-water moisturizing creams, the "softness of cosmetic film", "strength of water repellency", and "sustainability of water repellency" were evaluated.

[0292] [Evaluation method for inhibition of secondary adhesion of cosmetics]

[0293] (I) A 3 cm x 3 cm area was prepared on the inner part of the forearm after washing and removing sebum. 3 μL of macadamia nut oil was applied to the prepared area as a substitute for the removed sebum.

[0294] (II) 18 μL of the cosmetic to be evaluated was applied thereon and allowed to stand for 3 minutes.

[0295] (III) The applied area was covered with tissue paper, and the tissue paper was gently pressed from above and peeled off to evaluate the transfer of the pigment on the tissue paper.

[0296] [Calculation of secondary attachment area]

[0297] The calculation of the secondary adhesion area is performed in the same manner as in the [Calculation of the secondary adhesion area] of the above-mentioned liquid oil composition.

[0298] The photographs (actual shots) of Example 42 and Comparative Example 50 and the binarized images of these photographs are shown in FIG. Figure 2 .

[0299] [Evaluation criteria for the secondary adhesion inhibition effect of cosmetics]

[0300] The secondary adhesion suppression of the pigment was evaluated using the ratio of the detection area of ​​the black portion calculated in [Calculation Conditions of Secondary Adhesion Area].

[0301] A: The detection area is less than 15%.

[0302] B: The detection area is greater than 15% and less than 20%.

[0303] C: The detection area is greater than 20% and less than 25%.

[0304] D: The detection area is more than 25%.

[0305] D with a detection area of ​​30% or more was judged to be ineffective.

[0306] [Evaluation method of softness of cosmetic film]

[0307] (I) A 3 cm x 3 cm area was prepared on the inner side of the forearm after washing and removing sebum.

[0308] (II) 3 μL of macadamia nut oil was applied to the prepared area as a substitute for sebum removal.

[0309] (III) 18 μL of the cosmetic to be evaluated was applied onto macadamia nut oil and left to stand for 30 minutes.

[0310] (IV) Ten panelists evaluated the touch of the applied portion.

[0311] [Evaluation criteria for the softness of cosmetic masks]

[0312] A: 8 to 10 out of 10 people felt the softness of the mask.

[0313] B: 5 to 7 out of 10 people felt the softness of the cosmetic mask.

[0314] C: 2 to 4 out of 10 people felt the softness of the cosmetic mask.

[0315] D: Less than 1 out of 10 people felt the softness of the cosmetic mask.

[0316] [Evaluation method of water repellency strength]

[0317] (I) 5 μL of macadamia nut oil was applied to a 50 mm×50 mm PMMA plate.

[0318] (II) 20 μl of the cosmetic to be evaluated is applied thereto and left for 5 minutes.

[0319] (III) 20 μL of ion-exchanged water was dropped onto the coating film on the plate, the plate was tilted, and the angle at which the water droplet started to move was measured.

[0320] [Evaluation criteria for water repellency strength]

[0321] A: Start moving when the board's tilt angle is less than 40 degrees.

[0322] B: The movement starts when the inclination angle of the board is 40 degrees or more and less than 42 degrees.

[0323] C: The movement starts when the inclination angle of the board is 42 degrees or more and less than 43 degrees.

[0324] D: The plate does not move even when the inclination angle is 43 degrees or more.

[0325] [Evaluation method for the durability of water repellency]

[0326] (I) A PMMA plate prepared by the same method as in [Evaluation method of water repellency] was immersed in ion exchange water kept at 40° C. for 10 minutes and then naturally dried.

[0327] (II) Thereafter, 20 μL of ion-exchanged water was dropped onto the coating film on the plate, and the plate was tilted to measure the angle at which the water droplet started to move.

[0328] [Evaluation criteria for the durability of water repellency]

[0329] A: Start moving when the board's tilt angle is less than 34 degrees.

[0330] B: The movement starts when the inclination angle of the board is 34 degrees or more and less than 35 degrees.

[0331] C: The movement starts when the inclination angle of the board is 35 degrees or more and less than 36 degrees.

[0332] D: The plate does not move even when the inclination angle is 36 degrees or more.

[0333] [Water-in-oil foundation: comprehensive evaluation of secondary adhesion inhibition effect, softness of makeup film, water repellency strength, and water repellency durability]

[0334] The evaluation subjects of the cosmetics were scored for the secondary adhesion inhibition effect of pigments, the softness of the cosmetic film, the strength of water repellency, and the durability of water repellency. The scores were divided into 4 points for A, 3 points for B, 2 points for C, and 1 point for D, and the sum of the evaluation scores was used as the comprehensive evaluation score.

[0335] [Oil-in-water moisturizing cream: Comprehensive evaluation of the softness of the cosmetic film, the strength of water repellency, and the durability of water repellency]

[0336] The cosmetic film softness, water repellency strength, and water repellency durability of the evaluated cosmetics were scored as follows: A 4 points, B 3 points, C 2 points, and D 1 point, and the sum of the evaluation scores was used as the comprehensive evaluation score.

[0337] (Water-in-oil foundation)

[0338] As a water-in-oil foundation (cosmetics of the present invention), the liquid oily composition of Example 1, i.e., dimethicone 10cs as component (A), diisostearyl malate as component (B), and ethylhexyl hydroxystearate as component (C) were mixed in a (B) / (C) mass ratio of 3.0 and a {(B)+(C)} / (A) mass ratio of 4.0 to produce a water-in-oil foundation containing the liquid oily composition.

[0339] Table 15 shows the formulation and evaluation results of the water-in-oil foundation. It should be noted that the polyether-modified silicone oil used was "KF-6017" manufactured by Shin-Etsu Chemical Co., Ltd. As trimethylsiloxysilicate, "KF-7312J" manufactured by Shin-Etsu Chemical Co., Ltd. was used as a film-forming agent.

[0340] [Method for producing water-in-oil foundation]

[0341] The water-in-oil foundation is manufactured through the following steps a to c.

[0342] a: Heat and dissolve ingredients 1 to 10, and mix evenly.

[0343] b: Heat and dissolve components 11 to 13, and mix evenly.

[0344] c: The mixture obtained in step a at 80°C was added to the mixture obtained in step b at 80°C, and the mixture was emulsified and cooled.

[0345]

[0346] As shown in Table 15, it was confirmed that the cosmetic of Example 42 had an excellent secondary adhesion inhibitory effect of the pigment, the softness of the silicone film, and excellent water repellency with strength and durability. Comparative Example 50 is a cosmetic using a liquid oil composition without component (A), and Comparative Example 51 is a cosmetic using a liquid oil composition without component (C). Although the softness of the cosmetic film is good, the secondary adhesion inhibitory effect of the pigment, the strength and durability of the water repellency are low. Comparative Example 52 adds trimethylsiloxysilicate as a film-forming agent to the formulation of Comparative Example 50, but the secondary adhesion inhibitory effect, the strength and durability of the water repellency are low, and the softness of the cosmetic film is also poor.

[0347] These results show that when the compatibility 1 was evaluated as "S" and the compatibility 2 was evaluated as "IS", an organic silicone film was formed from the separated dimethyl silicone oil (component (A)), and as a result, the effect of the present invention was exerted.

[0348] (Oil-in-water moisturizing cream)

[0349] As oily components, the liquid oily composition of Example 1, i.e., dimethicone 10c as component (A), diisostearyl malate as component (B), and ethylhexyl hydroxystearate as component (C), were mixed in a ratio of (B) / (C) of 3.0 by mass and a ratio of {(B)+(C)} / (A) of 4.0 by mass to produce an oil-in-water cream containing the liquid oily composition.

[0350] Table 16 shows the formulation and evaluation results of the oil-in-water moisturizing cream. It should be noted that cetyl alcohol used was "KALCOL 6870" manufactured by Kao Corporation, polyglyceryl-10 stearate used was "SALACOSPGMSV" manufactured by Nissin Oillio Group, and polyglyceryl-10 distearate used was "SALACOS PGDSV" manufactured by Nissin Oillio Group.

[0351] [Manufacturing method of oil-in-water moisturizing cream]

[0352] The oil-in-water moisturizing cream is manufactured through the following steps a to c.

[0353] a: Heat ingredients 1 to 4 to dissolve and mix evenly.

[0354] b: Heat ingredients 5 to 8 to dissolve and mix evenly.

[0355] c: The mixture obtained in step a at 80°C was added to the mixture obtained in step b at 80°C, and the mixture was emulsified and cooled.

[0356]

[0357] As shown in Table 16, it was confirmed that the coating film formed by applying the cosmetic of Example 43 had softness and excellent strength and durability of water repellency. On the other hand, the cosmetic films of Comparative Examples 53 and 54 had excellent softness, but low strength and durability of water repellency.

[0358] These results show that when the compatibility 1 was evaluated as "S" and the compatibility 2 was evaluated as "IS", an organic silicone film was formed from the separated dimethyl silicone oil (component (A)), and as a result, the effect of the present invention was exerted.

[0359] Industrial Applicability

[0360] According to the present invention, there can be provided a liquid oily composition that can exert a secondary adhesion inhibition effect on cosmetics and impart strong and lasting water repellency, and a cosmetic containing the liquid oily composition.

Claims

1. A liquid oily composition comprising: Component (A), kinematic viscosity at 25°C is 4~12mm 2 / s dimethyl silicone oil; Component (B): an ester oil which is liquid at 25°C and has a dimethyl silicone oil compatibility value of 1.75 or more as determined by the following formula (I); and Component (C): an ester oil which is liquid at 25°C and has a dimethyl silicone oil compatibility value of less than 1.75 as determined by the following formula (I), The liquid oil composition is transparent and uniform at 25°C, and Component (A) was separated from a mixture in which 8 parts by mass of macadamia nut oil was added to 100 parts by mass of the liquid oil composition. 。 2. The liquid oil composition according to claim 1, wherein The mass ratio of the component (B) to the component (C) ((B) / (C)) is 0.32 to 18.00; The mass ratio of the total amount of the component (B) and the component (C) to the component (A) ({(B)+(C)} / (A)) is 1.50 to 12.

33.

3. The liquid oil composition according to claim 1, wherein The component (B) is selected from isononyl isononanoate, isotridecyl isononanoate, neopentyl glycol diethylhexanoate, glyceryl triethylhexanoate, glyceryl triisostearate (with a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure on the fatty chain), diisostearyl malate (with a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure on the fatty chain), pentaerythritol tetraethylhexanoate, neopentyl glycol didecyl One or more ester oils selected from the group consisting of glyceryl tristearate, propylene glycol di(caprylic acid / capric acid), polyglyceryl-2 triisostearate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure on the fatty chain), cetyl ethylhexanoate, ethylhexyl palmitate, glyceryl tris(caprylic acid / capric acid) ester, and dipentaerythritol pentaisostearate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure on the fatty chain).

4. The liquid oil composition according to claim 1, wherein The component (C) is one or more ester oils selected from propylene glycol diisostearate, trimethylolpropane triisostearate, pentaerythritol tetraisostearate, polyglyceryl-2 tetraisostearate, polyglyceryl-2 triisostearate, and ethylhexyl hydroxystearate.

5. The liquid oil composition according to claim 1, wherein The viscosity of the mixture consisting of the component (B) and the component (C) at 25° C. is 30 to 1200 mPa•s. 6 . A cosmetic comprising the liquid oily composition according to claim 1 .

7. The cosmetic according to claim 6, further comprising ingredient (D): powder.

8. The cosmetic according to claim 6, which is an oil-in-water emulsified cosmetic or a water-in-oil emulsified cosmetic, and further comprises: Ingredients (E): water, and Ingredient (F): surfactant.

9. A method for producing a cosmetic, comprising the liquid oily composition according to any one of claims 1 to 5 as a raw material.

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