Liquid oily composition and cosmetic preparation containing said liquid oily composition

Abstract

To provide a liquid oily composition that can be applied to the skin to impart a secondary adhesion inhibitory effect and a strong and durable water-repellent property, and a cosmetic material containing the liquid oily composition.SOLUTION: A liquid oily composition according to the present invention contains: component (A) of dimethicone having a kinematic viscosity of 4-12 mm2 / s at 25°C; component (B) of an ester oil that is liquid at 25°C and has a dimethicone compatibility value of 1.75 or more; and component (C) of an ester oil that is liquid at 25°C and has a dimethicone compatibility value of less than 1.75, wherein the component (A) is separated from a mixture that is uniform and transparent at 25°C and is prepared by adding 8 pts.mass of macadamia nut oil with respect to 100 pts.mass of the liquid oil composition. Provided that the inventive liquid oil composition does not contain a specific polyhydric alcohol modified silicone.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a liquid oily composition and a cosmetic preparation containing said liquid oily composition. This application claims priority based on Japanese Patent Application No. 2022-132567, filed on August 23, 2022, the contents of which are incorporated herein by reference. [Background technology]

[0002] Generally, the causes of cosmetic makeup coming off are classified into internal and external factors. Internal factors include moisture such as sweat and tears, and human secretions such as oils such as sebum that come into contact with cosmetics. External factors include adhesion of cosmetics to masks, clothing, etc. due to contact with the masks, clothing, etc. Hereinafter, such adhesion of cosmetics may be referred to as "secondary adhesion." Protecting the cosmetic film from such factors and maintaining the cosmetic film is a major challenge.

[0003] A method has been proposed to solve the problem of makeup ruined by sweat by blending a water-repellent base material such as a silicone resin into the cosmetic, and a method has been proposed to solve the problem of makeup ruined by sebum by blending a water- and oil-repellent base material such as a fluorine-based oil agent.

[0004] Patent Document 1, for example, lists a cosmetic containing a fluorine-modified silicone in which a fluoroalkyl group has been introduced into dimethyl silicone. Patent Document 2 lists an emulsion cosmetic that, by blending a specific powder in addition to a silicone resin film-forming agent, spreads smoothly and easily, does not burden the skin, maintains the effect of makeup for a long time, and provides excellent uniformity in the makeup film.

[0005] However, fluorine-modified silicones, which are dimethyl silicones with fluoroalkyl groups introduced, and silicone resins, which are film-forming agents, maintain the cosmetic film well, but have poor compatibility with other cosmetic ingredients. As a result, they have problems with stability, such as separation during storage, and there are also restrictions on the ingredients that can be used in combination to improve compatibility, which can limit the feel of the product.

[0006] In addition, in order to form a cosmetic film using silicone resin, which is a film-forming agent, it takes about 15 minutes after application to the skin in order for the solvent to evaporate, and the skin may feel tight after the cosmetic film is formed.

[0007] Given this background, there has been a demand for the development of a cosmetic ingredient that suppresses secondary adhesion of cosmetics, has strong and long-lasting water repellency, is compatible with other cosmetic ingredients, and has few formulation restrictions. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 06-184312 [Patent Document 2] JP 2006-265213 A Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention has been made in consideration of the above circumstances, and aims to provide a liquid oily composition that, when applied to the skin, can provide a secondary adhesion suppression effect and strong, long-lasting water repellency, as well as a cosmetic preparation containing said liquid oily composition. [Means for solving the problem]

[0010] The inventors have found that the problem can be solved by using an appropriate ester oil based on the dimethicone compatibility value calculated from the characteristics of the molecular structure of the ester oil, for a homogeneous liquid oily composition containing dimethicone and two or more ester oils with different compatibility with dimethicone in a specific ratio. That is, they have found that a cosmetic containing this liquid oily composition can impart excellent secondary adhesion suppression effect and excellent water repellency with strength and durability by mixing with sebum, and have completed the present invention.

[0011] That is, the present invention includes the following aspects. [1] Component (A): Dynamic viscosity at 25°C of 2 to 12 mm 2 / s dimethicone; Component (B): an ester oil which is liquid at 25°C and has a dimethicone compatibility value calculated by the following formula (I) of 1.75 or more; and Component (C): an ester oil which is liquid at 25°C and has a dimethicone compatibility value calculated by the following formula (I) of less than 1.75; A liquid oily composition comprising: It is transparent and homogeneous at 25°C, and A liquid oil-based composition in which component (A) separates from a mixture obtained by adding 8 parts by mass of macadamia nut oil to 100 parts by mass of the liquid oil-based composition.

[0012]

number

[0013] [2] The mass ratio of the component (B) to the component (C) ((B) / (C)) is 0.32 to 18.00; The liquid oily composition according to [1] above, wherein the mass ratio ({(B)+(C)} / (A)) of the total amount of the component (B) and the component (C) to the component (A) is 1.50 to 12.33. [3] The component (B) is isononyl isononanoate, isotridecyl isononanoate, neopentyl glycol diethylhexanoate, glyceryl triethylhexanoate, glyceryl triisostearate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure in the fatty chain), diisostearyl malate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure in the fatty chain), pentaerythrityl tetraethylhexanoate, neopentyl glycol dicaprate, di(caprylic / capric acid) The liquid oily composition according to [1] or [2] above, wherein the ester oil is one or more selected from the group consisting of propanediol (phosphate), polyglyceryl-2 triisostearate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure in the fatty chain), cetyl ethylhexanoate, ethylhexyl palmitate, caprylic / capric triglyceride, and dipentaerythrityl pentaisostearate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure in the fatty chain). [4] The liquid oily composition according to any one of the above [1] to [3], wherein the component (C) is one or more ester oils selected from the group consisting of propanediol diisostearate, trimethylolpropane triisostearate, pentaerythrityl tetraisostearate, polyglyceryl-2 tetraisostearate, polyglyceryl-2 triisostearate, and ethylhexyl hydroxystearate. [5] The liquid oily composition according to any one of the above [1] to [4], wherein the viscosity of a mixture consisting of the above component (B) and the above component (C) at 25°C is 30 to 1200 mPa s. [6] A cosmetic preparation comprising the liquid oily composition according to any one of [1] to [5] above. [7] The cosmetic preparation according to [6] above, further comprising component (D): powder. [8] The cosmetic preparation according to [6] or [7] above, further comprising component (E): water, and component (F): a surfactant, and being an oil-in-water emulsion cosmetic preparation or a water-in-oil emulsion cosmetic preparation. [9] A method for producing a cosmetic preparation, comprising incorporating the liquid oily composition according to any one of [1] to [5] above as a raw material. Effect of the Invention

[0014] According to the present invention, it is possible to provide a liquid oily composition that exhibits the effect of inhibiting secondary adhesion of cosmetics and can impart strong and long-lasting water repellency, and a cosmetic containing said liquid oily composition. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 shows photographs (actual images) of Example 1 and Comparative Example 1, and the photographs after being binarized. [Diagram 2] FIG. 1 shows photographs (actual images) of Example 42 and Comparative Example 50, and the photographs after being binarized. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Regarding a numerical range, "A or more and B or less" may be expressed as "A to B." For example, "1 to 10 parts by mass" means a numerical 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."

[0017] <Liquid oily composition> First, the liquid oily composition of this embodiment will be outlined. The liquid oily composition of the present embodiment contains the following specific dimethicone (component (A)) and specific ester oil (component (B) and component (C)). Component (A), component (B), and component (C) will be described in detail below. Component (A): Dynamic viscosity at 25°C of 2 to 12 mm 2 / s One or more types of dimethicone. Component (B): One or more ester oils which are liquid at 25°C and have a dimethicone compatibility value of 1.75 or more as calculated by the formula 1 described below. Component (C): One or more ester oils which are liquid at 25°C and have a dimethicone compatibility value calculated by the formula 1 described below of less than 1.75.

[0018] The liquid oily composition of the present embodiment has the following two properties. The liquid oily composition was transparent and homogeneous at 25° C. (hereinafter, “compatibility 1”). When 8 parts by mass of macadamia nut oil is added to 100 parts by mass of the liquid oily composition, the liquid oily composition is incompatible (hereinafter, "compatibility 2").

[0019] In addition, when the appearance of the liquid oily composition is transparent and uniform, the components constituting the liquid oily composition are defined as being compatible with each other or as being compatible. Here, "compatible" or "compatible" refers to a transparent state in which no separation, cloudiness, or turbidity occurs when the mixture (liquid oily composition) is observed with the naked eye, and "incompatible" or "not compatible" refers to a state in which separation, cloudiness, or turbidity occurs when the mixture is observed with the naked eye.

[0020] (compatibility 1) In a liquid oily composition that satisfies the compatibility 1, the components that make up the liquid oily composition are compatible with each other at 25°C.

[0021] (compatibility 2) In the above compatibility 2, "incompatible" means that when a mixture of a liquid oily composition and macadamia nut oil is visually observed, separation, cloudiness or turbidity occurs.

[0022] Macadamia nut oil and component (A) are incompatible with each other regardless of the ratio of mixing, but macadamia nut oil and component (B), and macadamia nut oil and component (C) are compatible with each other regardless of the ratio of mixing. Due to the difference in compatibility of each component with macadamia nut oil, when macadamia nut oil is mixed into a liquid oily composition, macadamia nut oil is compatible with component (B) and component (C), and component (A) is separated. In other words, the liquid oily composition of this embodiment, which has both compatibility 1 and compatibility 2, is a transparent and uniform liquid composition before being mixed with macadamia nut oil, but becomes incompatible by mixing with macadamia nut oil.

[0023] In this embodiment, macadamia nut oil is used as a substitute for sebum. The constituent fatty acids of macadamia nut oil are similar to the constituent fatty acids of triglycerides that constitute sebum. Therefore, macadamia nut oil and sebum exhibit similar behavior in terms of compatibility with dimethicone, which is component (A), ester oil, which is component (B), and ester oil, which is component (C). Therefore, in this embodiment, macadamia nut oil is used instead of sebum, and the behavior of the liquid oily composition when sebum is mixed with the liquid oily composition is confirmed. More specifically, the compatibility of the liquid oily composition with sebum when applied to the skin is confirmed by the compatibility when macadamia nut oil is added (compatibility 2).

[0024] Considering the relative relationship between the amount of sebum on adult skin and the normal amount of cosmetic applied, when a liquid oily composition is applied to the skin, the amount of sebum mixed in the liquid oily composition is about 8 parts by mass per 100 parts by mass of the liquid oily composition. In compatibility 2, in order to confirm the compatibility of a state approximated by a liquid oily composition mixed with sebum on the skin, the compatibility is judged based on "compatibility when 8 parts by mass of macadamia nut oil is added to 100 parts by mass of the liquid oily composition."

[0025] That is, the liquid oily composition of the present embodiment, which has both compatibility 1 and compatibility 2, is a transparent and uniform liquid composition before being applied to the skin, but when applied to the skin, the liquid oily composition comes into contact with and mixes with sebum on the skin, causing the liquid oily composition to lose its compatibility, and component (A) separates from components (B) and (C). The separated component (A) forms a component (A) film on the skin (hereinafter, the component (A) film may be referred to as a silicone film). The silicone film formed by separation from this liquid oily composition not only exhibits water repellency, but is also flexible and does not feel tight compared to cosmetic films formed using conventional techniques. Furthermore, the silicone film functions as a protective film, thereby exhibiting a secondary adhesion suppression effect.

[0026] A typical film-forming agent is composed of a solid and a solvent that dissolves the solid. By applying this film-forming agent to the skin and evaporating the solvent, the solid remains on the skin and hardens, forming a film. Since this film is solid, it cannot freely change shape and cannot follow the movement of the skin, which is thought to cause a feeling of tightness. On the other hand, the silicone film formed in this embodiment is liquid rather than solid, and does not harden on the skin, so it is presumed that it is less likely to cause a feeling of tightness.

[0027] As described above, a liquid oily composition that satisfies compatibility 1 (transparent and uniform at 25°C) and compatibility 2 (not compatible in the presence of 8% by mass of macadamia nut oil) mixes with sebum when applied to the skin and forms a silicone film (component (A) film) on the skin, which inhibits secondary adhesion and provides water repellency. In addition, the formed silicone film is flexible and does not feel tight.

[0028] That is, when the liquid oily composition is applied to the skin, sebum is added to the liquid oily composition, and a coating film having a laminated structure is formed from a thin film of the liquid oily composition from which component (A) has been removed, and a silicone film formed on the surface of the thin film, in that order from the skin side. Hereinafter, the thin film of the liquid oily composition from which component (A) has been removed after sebum has been added to the liquid oily composition may be referred to as an "ester oil film."

[0029] The effects of this embodiment, namely, excellent secondary adhesion inhibition 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 oily composition. When the liquid oily composition having compatibility 2 is applied to the skin, a silicone film is formed on the surface of the thin film (ester oil film). Therefore, even if various effects such as secondary adhesion inhibition, cosmetic film flexibility, water repellency strength, and water repellency durability of the liquid oily composition are not confirmed by experiments, it can be said that the liquid oily composition according to the present invention that satisfies the requirement of compatibility 2 can exhibit these effects.

[0030] <<Component (A)>> Next, the component (A) used in the liquid oily composition of the present invention will be described.

[0031] Silicone oil is a general term for liquid substances having a structure represented by the following general formula (1): Component (A) used in the liquid oily composition of this embodiment has a structure in which the R portion is a methyl group, as represented by the following formula (2), and is generally called dimethicone.

[0032] [ka]

[0033] [ka]

[0034] The kinetic viscosity of dimethicone increases with the degree of polymerization, and types of dimethicone are usually distinguished by their kinetic viscosity values.

[0035] In the present invention and the present specification, the kinetic viscosity is the value obtained by dividing the viscosity at 25°C by the density of the flowing viscous liquid at the same temperature. The unit of kinetic viscosity is usually millimeters per second (mm 2 / s).

[0036] The viscosity of dimethicone can be measured according to the method described in "55. Viscosity Measurement Method, Method 2, Rotational Viscometer Method" of the "Standards for Quasi-Drug Raw Materials 2021 (Pharmaceutical and Food Safety Bureau, Ministry of Health, Labor and Welfare)". Specifically, the viscosity can be measured by using a B-type viscometer, appropriately selecting the rotor and rotation speed so that the reading is 10 to 90, and reading the value 60 seconds after the start of rotation. The density of dimethicone can be measured by using a pycnometer.

[0037] The dimethicone of component (A) used in the liquid oily composition of the present embodiment has a kinetic viscosity at 25° C. of 4 to 12 mm 2 / s, 5 to 12 mm 2 / s is preferably 5 to 10 mm 2 / s is more preferable. When the kinetic viscosity at 25°C of the dimethicone of component (A) is within the above range, a sufficient secondary adhesion suppression effect can be obtained. As component (A), dimethicone having a kinetic viscosity within the above range may be used alone or in combination of two or more kinds.

[0038] As the dimethicone of component (A), a commercially available product can be used. For example, a commercially available product having a kinetic viscosity of 5 mm at 25°C is 2 / s dimethicone (trade name "KF-96L-5cs", Shin-Etsu Chemical Co., Ltd.), kinematic viscosity at 25°C is 10 mm 2 Examples of suitable anti-inflammatory agents include dimethicone (product name "KF-96A-10cs", manufactured by Shin-Etsu Chemical Co., Ltd.).

[0039] <<Component (B) and Component (C)>> Next, the components (B) and (C) used in the liquid oily composition of the present invention will be explained.

[0040] Component (B) is an ester oil that is liquid at 25° C. and has a dimethicone compatibility value of 1.75 or more. Component (C) is an ester oil that is liquid at 25° C. and has a dimethicone compatibility value of less than 1.75.

[0041] [Dimethicone compatibility value of ester oil] The dimethicone compatibility value of an ester oil can be calculated from the following formula (I).

[0042]

number

[0043] "Dimethicone compatibility value of ester oil" is a value that evaluates the compatibility of ester oil and dimethicone. The dimethicone compatibility value of ester oil is calculated from the above formula (I) using the carbon branch value and oxygen value determined based on the molecular structure of the ester oil. The higher the dimethicone compatibility value of ester oil, the more compatible the ester oil is with dimethicone, and the lower the value, the less compatible the ester oil is with dimethicone.

[0044] The carbon branching value reflects the number of terminal methyl groups in the ester oil, which promotes compatibility between the ester oil and dimethicone. The number "12" used to calculate the carbon branching value is the atomic weight of carbon.

[0045] Generally, substances with similar molecular structures tend to be compatible with each other. As shown in formula (2) above, dimethicone is a silicone oil (polydimethylsiloxane) with methyl groups on the side chain, and has many methyl groups in its molecular structure. Therefore, the more methyl groups on the side chain of the ester oil, the more compatible the ester oil and dimethicone become.

[0046] On the other hand, the oxygen value reflects the polarity around the oxygen atom in the ester oil, which inhibits the compatibility of the ester oil with dimethicone. The number "16" used to calculate the oxygen value is the atomic weight of oxygen.

[0047] Dimethicone 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 dimethicone are. In light of this, the formula for calculating the oxygen value uses coefficients such as -3, 0.5, and -0.1, which indicate the degree of contribution to compatibility according to the functional group.

[0048] Here, the number of carbon branches used to calculate the carbon branch value is a number calculated by "number of quaternary carbons x 2 + number of tertiary carbons" in the case of an ester oil having a defined branched structure.

[0049] In the case of ester oils whose branching structure is not determined, the number of carbon branches used to calculate the carbon branching value is: 1 First, the fatty acids and / or alcohols that make up the ester oil can be determined from the HNMR chart. 1 Obtain the HNMR chart. 1 The carbon branch numbers of the fatty acids and alcohols are calculated from the HNMR chart, and then the carbon branch numbers of the ester oils obtained from the fatty acids and alcohols whose carbon branch numbers have been calculated are calculated.

[0050] The specific method is as follows: 1 The instrument for measuring HNMR is not particularly limited, and commercially available instruments can be used.

[0051] As a pretreatment for analyzing the fatty acids and alcohols that constitute the ester oil, the ester oil to be analyzed may be hydrolyzed. First, the ester oil to be analyzed is saponified using potassium hydroxide. Next, the excess potassium hydroxide is neutralized using hydrochloric acid, and the resulting alcohol is recovered by solvent extraction. The saponified fatty acid after the alcohol is removed is again neutralized using hydrochloric acid, and the fatty acid is recovered by solvent extraction. The solvent is removed from each of the recovered alcohol and fatty acid, 1 This is used as a sample for HNMR.

[0052] First, the fatty acids and / or alcohols that constitute the ester oil are 1 HNMR is measured. The area ratio of the peak attributable to the protons derived from the methyl groups is calculated when the peak area attributable to the protons derived from the carboxylic acid groups of the fatty acids or the hydroxyl groups of the alcohol in the obtained chart is taken as 1. Next, the area ratio of the protons attributable to the methyl groups is divided by 3, and then 1 corresponding to the number of methyl groups at the ends 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, the number of carbon branches of the ester oil can be determined by adding up the numbers of carbon branches of the fatty acids and / or alcohols that make up the ester oil from the molar ratio of the feeds used during ester synthesis. This 1 The method of calculating the carbon branch number from the HNMR chart can also be applied when the fatty acid and / or alcohol is a mixture or when the branch number is not an integer.

[0053] 1 When analyzing by HNMR, if CDCl3 is used as the solvent and tetramethylsilane is used as the standard substance, the chemical shifts of the protons derived from the methyl groups are in the range of 1.2 to 0.8 ppm, the protons derived from the hydroxyl groups are in the range of 4.0 to 4.5 ppm, and the protons derived from the carboxylic acid groups are in the range of 10 to 13 ppm.

[0054] [Derivation of formula (I)] The formula (I) can be determined as follows, as described in the Examples below. First, in order to calculate the compatibility value of ester oil with dimethicone, mixtures of dimethicone with various kinetic viscosities and various ester oils in a mass ratio of 1:1 are examined for compatibility at 25°C.

[0055] It is generally known that the greater the viscosity of dimethicone, the more difficult it becomes to dissolve it in ester oil. Therefore, an ester oil that is compatible with dimethicone with high viscosity is also compatible with dimethicone with lower viscosity, and is therefore compatible with dimethicone with a wide range of viscosities, and is said to be an ester oil that is highly compatible with dimethicone.

[0056] Next, the number of carbon branches of each ester oil used was 1 The number of hydroxyl groups, ester groups, and ether groups are determined from the structures of the fatty acids and alcohols that constitute the ester oil, and the hydroxyl value of the ester oil. The carbon branch value is derived from the number of carbon branches, and the oxygen value is derived from the number of hydroxyl groups, ester groups, and ether groups.

[0057] Formula (I) is derived by adjusting the compatibility at 25°C of mixtures of dimethicones of various kinetic viscosities and various ester oils in a mass ratio of 1:1 so that the structural features of the ester oils match. According to formula (I), the sum of the carbon branch value and the oxygen value is multiplied by 10,000 and divided by the square of the molecular weight of the ester oil, and the resulting value is the dimethicone compatibility value.

[0058] The more compatible an ester oil is with dimethicone, the higher the dimethicone compatibility value derived from the structural characteristics of the ester oil tends to be. On the other hand, the more poorly compatible an ester oil is with dimethicone, the lower the dimethicone compatibility value derived from the structural characteristics of the ester oil tends to be.

[0059] For example, kinematic viscosity of 10 mm 2From the compatibility of a mixture of dimethicone of 1.75 or more and various ester oils in a mass ratio of 1:1, calculated using the above formula (I), it is found that ester oils having a dimethicone compatibility value of 1.75 or more have a kinematic viscosity of 10 mm 2 It can be determined that it is compatible with dimethicone / s.

[0060] In this way, it can be determined that an ester oil having a dimethicone compatibility value of 1.75 or more calculated from formula (I) can be used as component (B) without confirming its compatibility with dimethicone through experiments. Similarly, it can be determined that an ester oil having a dimethicone compatibility value of less than 1.75 calculated from formula (I) can be used as component (C) without confirming its compatibility with dimethicone through experiments.

[0061] The formula (I) of this embodiment is, for example, a kinematic viscosity of 5 mm 2 / s and 10mm 2 It can also be used as a criterion for judging the compatibility of a mixture in which at least two types of dimethicone having different kinetic viscosities, such as dimethicone of 1:1 / s, are mixed with an ester oil in a 1:1 mass ratio.

[0062] As the ester oil of component (B), any ester oil can be used so long as it is liquid at 25° C. and has a dimethicone compatibility value of 1.75 or more. As the ester oil of component (C), any ester oil can be used so long as it is liquid at 25° C. and has a dimethicone compatibility value of less than 1.75.

[0063] The ester oils of components (B) and (C) are carboxylates, which are compounds produced from alcohol and carboxylic acid, and may have a hydroxyl group or a carboxyl group in the structure.

[0064] The alcohol constituting the carboxylic acid ester is preferably an aliphatic alcohol having 1 to 22 carbon atoms or a polyhydric alcohol.

[0065] The aliphatic alcohol constituting the carboxylic acid ester is preferably an alcohol having 5 to 20 carbon atoms, and specifically, isononanol, tridecanol, 2-ethylhexanol, cetanol, octyldodecanol, and isostearyl alcohol are preferred.

[0066] The polyhydric alcohol constituting the carboxylic acid ester is preferably a dihydric to octahydric polyhydric alcohol, more preferably a dihydric to hexahydric polyhydric alcohol having 2 to 16 carbon atoms, and specifically, propanediol, glycerin, diglycerin, neopentyl glycol, trimethylolpropane, pentaerythritol, and dipentaerythritol are preferred.

[0067] Incidentally, methyl-branched isostearyl alcohol is obtained by reducing isostearic acid, which is commonly used industrially. Isostearic acid, which is commonly used industrially, is a carboxylic acid obtained by hydrogenating a monomer acid, which is a by-product during the synthesis of dimer acid. The starting material for the synthesis of said dimer acid is mainly oleic acid, but linoleic acid and linolenic acid may also be included. For this reason, isostearic acid, which is widely used industrially, has an average of 1.3 methyl group branches on the main chain (Keiichi Inaba, Jiro Hirano (eds.), "New Edition Fatty Acid Chemistry, 2nd Edition," Saiwai Shobo Co., Ltd., April 25, 1997, p. 224).

[0068] On the other hand, 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctanoic acid is commonly referred to as "isostearic acid".

[0069] Therefore, in the following description, in order to distinguish between the two types of alcohols derived from isostearic acid, the substituent derived from the alcohol obtained by reducing 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 in the fatty chain)."

[0070] The carboxylic acid constituting the carboxylate ester is preferably a fatty acid having 1 to 22 carbon atoms, and the carboxylic acid may 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.

[0071] As described in the explanation of isostearyl alcohol, there are several compounds called "isostearic acid" although they have different structures. In the following explanation, like isostearyl alcohol, 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctanoic acid and the substituents derived from this carboxylic acid may be described as "(having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure in the fatty chain)".

[0072] 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 (triethylhexanoin) [3.79], glyceryl triisostearate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure in the fatty chain) [3.78], diisostearyl malate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure in the fatty chain) [3.72], pentaerythritol tetraethylhexanoate, and the like. Examples of the glyceryl esters include glyceryl esters [3.31], neopentyl glycol dicaprate [3.28], dicaprylic / capric propanediol [2.92], polyglyceryl-2 triisostearate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure in the fatty chain) [2.68], cetyl ethylhexanoate [2.07], ethylhexyl palmitate [2.07], tri(caprylic / capric) glyceryl [1.99], dipentaerythrityl pentaisostearate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure in the fatty chain) [1.89], etc. The numbers in [ ] following 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 (B), one or more of these can be used. Among these, as the ester oil of component (B), isononyl isononanoate, isotridecyl isononanoate, neopentyl glycol diethylhexanoate, glyceryl triethylhexanoate, glyceryl triisostearate, diisostearyl malate, pentaerythrityl tetraethylhexanoate, neopentyl glycol dicaprate, di(caprylic acid / capric acid) propanediol, polyglyceryl-2 triisostearate, cetyl ethylhexanoate, tri(caprylic acid / capric acid) glyceryl, or dipentaerythrityl pentaisostearate is preferred. In particular, diisostearyl malate is preferred as the ester oil of component (B) because it has a hydroxyl group in its structure, but is compatible with dimethicone and has good compatibility with powder.

[0073] As the ester oil of component (B), commercially available ester oils can be used. As the commercially available products, various ester oils manufactured by Nisshin 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"), triisostearin (trade name "Salacos 3318"), diisostearyl malate (trade name "Cosmol 222"), pentaerythrityl tetraethylhexanoate (trade name "Salacos 5408"), di ... Neopentyl glycol polysaccharide (trade name "Estemol N-01"), dicaprylic / capric propanediol (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"), tricaprylic / capric glyceryl (trade name "ODO"), dipentaerythrityl pentaisostearate (trade name "Salacos DP-518N"), etc. can be used.

[0074] The ester oil of component (C) is not particularly limited, and examples thereof include propanediol diisostearate [1.71], trimethylolpropane triisostearate [1.36], pentaerythrityl tetraisostearate [1.04], polyglyceryl-2 tetraisostearate [0.82], polyglyceryl-2 triisostearate [0.48], and ethylhexyl hydroxystearate [-1.18]. The number in [ ] following the compound name is the dimethicone compatibility value calculated from the structural characteristics of the ester oil using the above formula (I). One or more of these can be used as the ester oil of component (C). In particular, ethylhexyl hydroxystearate is preferred because it has a small dimethicone compatibility value and is efficiently separated from dimethicone.

[0075] As the ester oil of component (C), commercially available ester oils can be used. As the commercially available products, various ester oils manufactured by Nisshin Oillio Group Co., Ltd. can be used, and specifically, propanediol diisostearate (trade name "Salacos PR-17"), trimethylolpropane triisostearate (trade name "Salacos 6318V"), pentaerythrityl 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.

[0076] The dimethicone compatibility value of the ester oil correlates with the compatibility when the component (A) and the ester oil are mixed at a mass ratio of 1:1. Specifically, among the ester oils that are liquid at 25°C, ester oils with a dimethicone compatibility value of 1.75 or more are compatible when mixed with the component (A) at a mass ratio of 1:1. On the other hand, among the ester oils that are liquid at 25°C, ester oils with a dimethicone compatibility value of less than 1.75 are not compatible when mixed with the component (A) at a mass ratio of 1:1. For this reason, the liquid oily composition of this embodiment can also be shown as the following embodiment without using the dimethicone compatibility value.

[0077] That is, the liquid oily composition of this embodiment contains the following dimethicone (component (A2)) and the following ester oil (component (B2), component (C2)), is transparent and homogeneous at 25°C (compatibility 1), and is a liquid oily composition in which component (A2) separates from a mixture in which 8 parts by mass of macadamia nut oil is added to 100 parts by mass of the liquid oily composition (compatibility 2). Component (A2): Dynamic viscosity at 25°C of 4 to 12 mm 2 / s Dimethicone, 1 or 2 types Component (B2): One or more ester oils that are liquid at 25°C and are compatible when mixed with component (A) in a 1:1 mass ratio (mass ratio of component (A):component (B2) = 1:1). Component (C2): One or more ester oils that are liquid at 25°C and are incompatible when mixed with component (A) in a 1:1 mass ratio (mass ratio of component (A):component (C2) = 1:1).

[0078] Component (A2) is the same as component (A). Furthermore, as the ester oil of component (B2), any ester oil can be used as long as it is liquid at 25° C. and has a dimethicone compatibility coefficient of 1.75 or more, that is, the ester oil of component (B). As the ester oil of component (C2), any ester oil can be used as long as it is liquid at 25° C. and has a dimethicone compatibility coefficient of less than 1.75, that is, the ester oil of component (C).

[0079] The viscosity of the mixture of components (B2) and (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. When the viscosity of the mixture of components (B2) and (C2) at 25°C is within the above range, the liquid oily composition of this embodiment is more likely to form a silicone film when mixed with sebum. The viscosity of the mixture of components (B) and (C) at 25°C is similar. Here, the viscosity of the mixture of components (B2) and (C2) at 25°C can be measured, for example, by using a B-type viscometer, appropriately selecting a rotor and rotation speed so that the reading is 10 to 90, and reading the value 60 seconds after the start of rotation.

[0080] In the liquid oily composition of this embodiment, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 0.32 to 18.00, and more preferably 0.40 to 14.24. In the liquid oily composition of this 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, more preferably 2.08 to 11.05. By satisfying the conditions of the mass ratio ((B) / (C)) and the mass ratio ({(B)+(C)} / (A)), the liquid oily composition of this embodiment is more likely to form a silicone film when mixed with sebum. In other words, by satisfying the conditions of the mass ratio ((B) / (C)) and the mass ratio ({(B)+(C)} / (A)), a higher secondary adhesion suppression effect and excellent water repellency with strength and durability can be obtained. The same applies to the mass ratio ((B2) / (C2)) and the mass ratio ({(B2)+(C2)} / (A2)).

[0081] The combinations of components A, B, and C in the liquid oily composition of this embodiment and their preferred blending ratios are described below. In the following description, the sum of components A, B, and C is 100% by mass. In the following examples, the suffix "dimethicone" indicates the kinetic viscosity of dimethicone at 25°C. For example, "dimethicone 5cs" means dimethicone with a kinetic viscosity of 5 centistokes (5cs). 1 centistoke is 1 mm 2 / s.

[0082] 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.

[0083] When component (A) is dimethicone 5cs, component (B) is glyceryl triethylhexanoate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 15.60-17.30% by mass, component (B) is preferably 31.40-34.70% by mass, and component (C) is preferably 48.00-53.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 0.59-0.72, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 4.78-5.41.

[0084] When component (A) is dimethicone 10cs, component (B) is isononyl isononanoate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 30.00 to 32.50 mass%, component (B) is preferably 30.00 to 32.50 mass%, and component (C) is preferably 35.00 to 40.00 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.

[0085] When component (A) is dimethicone 10cs, component (B) is isotridecyl isononanoate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 8.30-8.80% by mass, component (B) is preferably 24.70-26.20% by mass, and component (C) is preferably 65.00-67.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 0.37-0.40, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 10.36-11.05.

[0086] When component (A) is dimethicone 10cs, component (B) is neopentyl glycol diethylhexanoate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 9.00-9.50% by mass, component (B) is preferably 27.00-28.50% by mass, and component (C) is preferably 62.00-64.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 0.42-0.46, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 9.53-10.11.

[0087] When component (A) is dimethicone 10cs, component (B) is glyceryl triethylhexanoate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 12.50-13.80% by mass, component (B) is preferably 37.50-41.20% by mass, and component (C) is preferably 45.00-50.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 0.75-0.92, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 6.25-7.00.

[0088] When component (A) is dimethicone 10cs, component (B) is glyceryl triisostearate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 14.50-15.80% by mass, component (B) is preferably 43.50-47.20% by mass, and component (C) is preferably 37.00-42.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 1.04-1.28, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 5.33-5.90.

[0089] When component (A) is dimethicone 10cs, component (B) is pentaerythrityl tetraethylhexanoate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 16.30-17.50% by mass, component (B) is preferably 48.70-52.50% by mass, and component (C) is preferably 30.00-35.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 1.39-1.75, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 4.71-5.13.

[0090] When component (A) is dimethicone 10cs, component (B) is neopentyl glycol dicaprate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 16.30-18.00% by mass, component (B) is preferably 48.70-54.00% by mass, and component (C) is preferably 28.00-35.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 1.39-1.93, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 4.56-5.13.

[0091] When component (A) is dimethicone 10cs, component (B) is di(caprylic / capric) propanediol, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 16.30-18.00% by mass, component (B) is preferably 48.70-54.00% by mass, and component (C) is preferably 28.00-35.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 1.39-1.93, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 4.56-5.13.

[0092] When component (A) is dimethicone 10cs, component (B) is polyglyceryl-2 triisostearate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 19.50-21.30% by mass, component (B) is preferably 58.50-63.70% by mass, and component (C) is preferably 15.00-22.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 2.66-4.25, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 3.69-4.13.

[0093] When component (A) is dimethicone 10cs, component (B) is cetyl ethylhexanoate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 11.80-13.00% by mass, component (B) is preferably 35.20-39.00% by mass, and component (C) is preferably 48.00-53.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 0.66-0.81, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 6.69-7.47.

[0094] When component (A) is dimethicone 10cs, component (B) is tri(caprylic acid / capric acid)glyceryl, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 21.30-23.80 mass%, component (B) is preferably 63.70-71.20 mass%, and component (C) is preferably 5.00-15.00 mass%. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 4.25-14.24, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 3.20-3.69.

[0095] When component (A) is dimethicone 10cs, component (B) is dipentaerythrityl pentaisostearate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 20.00-22.00% by mass, component (B) is preferably 60.00-66.00% by mass, and component (C) is preferably 12.00-20.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 3.00-5.50, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 3.55-4.00.

[0096] When component (A) is dimethicone 10cs, component (B) is diisostearyl malate, and component (C) is propanediol diisostearate, component (A) is preferably 12.50 to 16.30 mass%, component (B) is preferably 37.50 to 48.70 mass%, and component (C) is preferably 35.00 to 50.00 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.

[0097] When component (A) is dimethicone 10cs, component (B) is diisostearyl malate, and component (C) is trimethylolpropane triisostearate, component (A) is preferably 18.80-19.50% by mass, component (B) is preferably 56.20-58.50% by mass, and component (C) is preferably 22.00-25.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 2.25-2.66, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 4.13-4.32.

[0098] When component (A) is dimethicone 10cs, component (B) is diisostearyl malate, and component (C) is pentaerythrityl tetraisostearate, component (A) is preferably 18.80-20.00% by mass, component (B) is preferably 56.20-60.00% by mass, and component (C) is preferably 20.00-25.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 2.25-3.00, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 4.00-4.32.

[0099] 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 mass%, component (B) is preferably 60.00 to 63.00 mass%, and component (C) is preferably 16.00 to 20.00 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.

[0100] When component (A) is dimethicone 10cs, component (B) is diisostearyl malate, and component (C) is polyglyceryl-2 tetraisostearate, component (A) is preferably 18.80-20.00% by mass, component (B) is preferably 56.20-64.00% by mass, and component (C) is preferably 20.00-25.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 2.25-3.20, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 4.00-5.67.

[0101] When component (A) is dimethicone 10cs, component (B) is diisostearyl malate, and component (C) is ethylhexyl hydroxystearate, component (A) is preferably 20.00-21.00% by mass, component (B) is preferably 60.00-63.00% by mass, and component (C) is preferably 16.00-20.00% by mass. In this case, the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 3.00-3.94, and the mass ratio of the total amount of component (B) and component (C) to component (A) ({(B)+(C)} / (A)) is preferably 3.76-4.00.

[0102] <Cosmetics> Next, the cosmetic material according to the present invention will be described.

[0103] The cosmetic of the present embodiment is a cosmetic containing the liquid oily composition according to the above embodiment. The cosmetic may consist of the liquid oily composition alone, or may further contain other components. When used as an oily component of a cosmetic, the content of the liquid oily composition in the entire cosmetic is preferably 5 to 60% by mass, more preferably 10 to 50% by mass, and even more preferably 10 to 40% by mass.

[0104] The total amount of component (A), component (B), and component (C) derived from the liquid oily composition contained in the cosmetic of this embodiment is not particularly limited, as long as the cosmetic has compatibility 2. The total content ratio of component (A), component (B), and component (C) to the entire cosmetic of this embodiment can be, for example, 5% by mass or more, preferably 10 to 60% by mass, more preferably 15 to 50% by mass or more, even more preferably 20 to 45% by mass, and may be 100% by mass.

[0105] The cosmetic composition according to the present invention may have any appearance, be it transparent, translucent or emulsified (opaque), and may be in any form, such as liquid or cream.

[0106] Cosmetics using the liquid oily composition according to the present invention are not particularly limited, and examples thereof include makeup cosmetics such as foundations, sunscreen cosmetics, milky lotions, creams, beauty essences, lotions, and other skin care cosmetics.

[0107] (Component (D)) The cosmetic preparation of the present embodiment may further contain a powder as component (D).

[0108] 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 examples thereof include extender pigments, color pigments, and pearl pigments.

[0109] The shape of the powder of component (D) is not particularly limited, and may be any shape such as spherical, plate-like, needle-like, granular, spindle-like, flaky, and amorphous.

[0110] The extender pigment is not particularly limited, and examples thereof include inorganic pigments such as silicic acid, silicic anhydride, 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 composite powders thereof; organic powders such as polyamide, polyester, polypropylene, polystyrene, polyurethane, nylon, silicone resin, vinyl resin, urea resin, phenolic resin, silicon resin, acrylic resin, melamine resin, epoxy resin, polycarbonate resin, divinylbenzene-styrene copolymer, silk powder, cellulose, Nε-lauroyl-L-lysine, and composite powders thereof; and composite powders of the above inorganic powders and the above organic powders.

[0111] The coloring pigment is not particularly limited, and examples thereof include metal oxides such as titanium oxide, zinc oxide, yellow iron oxide, red iron oxide, black iron oxide, red 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 dyes and lake pigments; and natural pigments such as carmine.

[0112] The pearl pigment is not particularly limited, and examples of the pearl pigment that can be used include mica, synthetic phlogopite, etc., coated with a colorant such as titanium oxide, iron oxide, silicon oxide, Prussian blue, chromium oxide, carmine, organic pigments, etc. These powders may be subjected to various surface treatments such as water repellency and water / oil repellency by conventional methods before use.

[0113] By incorporating a powder having an ultraviolet shielding effect, such as a metal oxide powder, as the powder of component (D), a sunscreen cosmetic can also be produced.

[0114] The metal oxide powder having an ultraviolet shielding effect is not particularly limited, and for example, an average particle size of 10 to 100 nm is more preferable since it prevents the skin from appearing white when applied to the skin.

[0115] The metal oxide powder having an ultraviolet shielding effect is not particularly limited, and examples thereof include titanium oxide, zinc oxide, zirconium oxide, and cerium oxide, and one or more of these can be used.

[0116] The shape is not particularly limited, and examples thereof include spherical, needle-like, spindle-like, plate-like, flaky, etc. In order to reduce the surface activity, the particles may be treated with an inorganic compound such as silica or alumina.

[0117] When the cosmetic of the present embodiment contains component (D), the content of component (D) in the entire cosmetic varies depending on the type of cosmetic, but is preferably 1 to 90 mass%, more preferably 1 to 60 mass%, and even more preferably 1 to 30 mass%. For example, when the cosmetic of the present embodiment is a water-in-oil emulsion foundation, emulsion eye shadow, or sunscreen, the content of component (D) in the cosmetic is preferably 1 to 30 mass%.

[0118] (Component (E) and Component (F)) The cosmetic preparation of the present embodiment may further contain water as component (E) and a surfactant as component (F).

[0119] By incorporating these components, the cosmetic of the present embodiment can be an emulsion cosmetic. The cosmetic of the present embodiment may be a water-in-oil emulsion cosmetic (W / O emulsion cosmetic) or an oil-in-water emulsion cosmetic (O / W emulsion cosmetic).

[0120] The water of component (E) is not particularly limited, and for example, any of ion-exchanged water, distilled water, water derived from fruit, and deep ocean water can be used.

[0121] The content of component (E) in the cosmetic preparation of this embodiment that contains component (E) is not particularly limited and can be appropriately adjusted in consideration of the type of cosmetic preparation, etc. The content of component (E) in the cosmetic preparation of this embodiment is preferably 1 to 80 mass%, more preferably 10 to 70 mass%, and even more preferably 20 to 60 mass%.

[0122] The surfactant as component (F) may be any surfactant generally used in cosmetics, with nonionic surfactants such as polyoxyethylene modified silicone, polyglycerin fatty acid ester, polyoxyethylene alkyl, polyoxyethylene fatty acid ester, and polyoxyethylene hydrogenated castor oil being preferred.

[0123] The content of component (F) in the cosmetic preparation of this embodiment containing component (F) is not particularly limited and can be appropriately adjusted taking into consideration the type of cosmetic preparation, etc. The content of the component in the cosmetic preparation of this embodiment is preferably 0.01 to 10 mass%, more preferably 0.05 to 5 mass%, and even more preferably 0.1 to 5 mass%.

[0124] The cosmetic preparation according to the present invention may further contain additives that are generally added to cosmetic preparations, provided that the effects of the present invention are not impaired. Examples of such additives include antioxidants, antioxidant assistants, preservatives, UV absorbers, polyhydric alcohols, 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.

[0125] The antioxidant is not particularly limited, and examples thereof include oil-soluble vitamin C derivatives, tocopherols and their derivatives and their salts, dibutylhydroxytoluene, butylhydroxyanisole, and gallic acid esters, etc. The antioxidant may be used alone or in combination of two or more kinds.

[0126] The antioxidant aid is not particularly limited, and examples thereof include phosphoric acid, citric acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate, phytic acid, ethylenediaminetetraacetic acid, etc. The antioxidant aid may be used alone or in combination of two or more kinds.

[0127] 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 kinds.

[0128] Examples of ultraviolet absorbents include, but are not limited to, benzoic acid-based ultraviolet absorbents such as para-aminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N,N-dipropoxy PABA ethyl ester, N,N-diethoxy PABA ethyl ester, N,N-dimethyl PABA ethyl ester, N,N-dimethyl PABA butyl ester, and N,N-dimethyl PABA ethyl ester; anthranilic acid-based ultraviolet absorbents such as homomenthyl-N-acetylanthranilate; amyl salicylate, menthyl salicylate, homomenthyl salicylate, octyl salicylate, phenyl salicylate, and the like. salicylic acid-based ultraviolet absorbers such as p-isopropanolphenyl salicylate, benzyl salicylate, and p-isopropanolphenyl salicylate; octyl cinnamate, ethyl 4-isopropyl cinnamate, methyl 2,5-diisopropyl cinnamate, ethyl 2,4-diisopropyl cinnamate, methyl 2,4-diisopropyl cinnamate, propyl p-methoxy cinnamate, isopropyl p-methoxy cinnamate, isoamyl p-methoxy cinnamate, octyl p-methoxy cinnamate (2-ethylhexyl Cinnamic acid-based UV absorbers such as 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzo, 2,4'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzo, 2,2'-dihydroxy-4,4'-dimethoxybenzo, 2,2'-dihydroxy-4,4'-dimethoxybenzo, 2,2'-dihydroxy-4,4'-dimethoxy-4- ... benzophenone-based ultraviolet absorbers such as phenone, 2,2',4,4'-tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 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-octoxybenzophenone, and 4-hydroxy-3-carboxybenzophenone;3-(4'-methylbenzylidene)-d,l-camphor, 3-benzylidene-d,l-camphor, urocanic acid, urocanic acid ethyl ester, 2-phenyl-5-methylbenzoxazole, 2,2'-hydroxy-5-methylphenylbenzotriazole, 2-(2'-hydroxy-5'-t-octylphenyl)benzotriazole, 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, dibenzalazine, dianisoylmethane, 4-methoxy-4'-t-butyldibenzoylmethane, 5-(3 ,3-dimethyl-2-norbornylidene)-3-pentan-2-one, and 2,4,6-trianilino-p-(carbo-2'-ethylhexyl-1'-oxy)1,3,5-triazine, 4-tent-butyl-4'-methoxydibenzoylmethane, ethylaminohydroxybenzoylhexyl benzoate, ethylhexyl triazine, t-butyl methoxydibenzoylmethane, bisethylhexyloxyphenol methoxyphenyl triazine, diethylhexylbutamidotriazone, oxybenzone-3, etc. The ultraviolet absorber may be used alone or in combination of two or more kinds.;

[0129] Examples of polyhydric alcohols include, but are not limited to, propylene glycol (1,2-propanediol), 1,3-propanediol, 1,3-butylene glycol (1,3-butanediol), pentylene glycol (1,2-pentanediol), neopentylene glycol (2,2-dimethyl-1,3-propanediol), isoprene glycol (3-methyl-1,3-butanediol), dipropylene glycol, glycerin, diglycerin, polyglycerin, polyethylene glycol, pentaerythritol, dipentaerythritol, sorbitol, sorbitan, etc. As the polyhydric alcohol, one type may be used alone, or two or more types may be used in combination.

[0130] 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 composition according to the present invention may be used alone or in combination of two or more kinds.

[0131] Examples of natural water-soluble polymers include, but are not limited to, plant-based polymers such as agar, glucomannan, gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, carrageenan, pectin, quince seed, algae colloid (cassow extract), and starch (rice, corn, potato, and wheat); microbial polymers such as xanthan gum, dextran, succinoglucan, and pullulan; and animal-based polymers such as collagen, casein, albumin, and gelatin.

[0132] 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 methyl cellulose, nitrocellulose, methylhydroxypropyl cellulose, sodium cellulose sulfate, hydroxypropyl cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose, crystalline cellulose, and cellulose powder; and alginic acid-based polymers such as sodium alginate and propylene glycol alginate.

[0133] The synthetic water-soluble polymer is not particularly limited, and examples thereof include vinyl polymers such as polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, and carboxyvinyl polymer; polyoxyethylene polymers such as polyethylene glycol 20,000, 40,000, and 60,000; polyoxyethylene-polyoxypropylene copolymer polymers; acrylic polymers such as sodium polyacrylate, polyethyl acrylate, and polyacrylamide; polyethyleneimine, and cationic polymers.

[0134] The pH adjuster is not particularly limited, and examples thereof include edetic acid, disodium edetate, citric acid, sodium citrate, sodium hydroxide, potassium hydroxide, triethanolamine, etc. The pH adjuster may be used alone or in combination of two or more kinds.

[0135] The inorganic salt is not particularly limited, and examples thereof include sodium chloride, potassium chloride, magnesium chloride, sodium sulfate, potassium sulfate, magnesium sulfate, etc. The organic acid salt includes citric acid, malic acid, tartaric acid, and salts thereof, ascorbic acid, and salts thereof, and ascorbic acid derivatives and salts thereof.

[0136] The chelating agent is not particularly limited, and examples thereof include disodium edetate, edetate salts, hydroxyethanediphosphonic acid, etc. The chelating agent may be used alone or in combination of two or more kinds.

[0137] 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, biotin, and the like.

[0138] The extracts are not particularly limited, and examples thereof include plant extracts such as aloe vera, witch hazel, hamamelis, cucumber, lemon, lavender, and rose. EXAMPLES

[0139] The present invention will be described in more detail below with reference to specific examples, but the present invention is not limited to the contents of the examples shown below.

[0140] [1. Evaluation of Liquid Oil-Based Composition] Table 1 shows the correspondence between components (B) and (C) and their abbreviations. Table 2 shows the experimental results of compatibility with dimethicone at each kinetic viscosity for components (B) and (C) and the dimethicone compatibility values. Table 3 shows the dimethicone compatibility values ​​and the molecular structural factors used to calculate the dimethicone compatibility values.

[0141] The compatibility of dimethicone with component (B) or component (C) was prepared and evaluated according to the below-mentioned [Preparation of liquid oily composition and evaluation of compatibility 1].

[0142] As a result, it was confirmed that ester oils compatible with dimethicone have a dimethicone compatibility coefficient of 1.75 or more, while ester oils incompatible with dimethicone have a dimethicone compatibility coefficient of less than 1.75.

[0143] [Table 1]

[0144] [Table 2]

[0145] [Table 3]

[0146] All dimethicones used were manufactured by Shin-Etsu Chemical Co., Ltd. and had a kinetic viscosity of 1 mm at 25°C. 2 The dimethicone with a kinetic viscosity of 2 mm is sold under the trade name "KF-96A-1cs" (hereinafter abbreviated as "Dimethicone 1cs"). 2 The dimethicone in the product name "KF-96L-2cs" (hereinafter abbreviated as "Dimethicone 2cs") has a dynamic viscosity of 5 mm 2 The dimethicone with a kinetic viscosity of 10 mm is the product name "KF-96A-5cs" (hereinafter abbreviated as "Dimethicone 5cs"). 2 The dimethicone with a kinetic viscosity of 20 mm is sold under the trade name "KF-96A-10cs" (hereinafter abbreviated as "Dimethicone 10cs"). 2 The dimethicone with a kinetic viscosity of 100 mm is sold under the trade name "KF-96A-20cs" (hereinafter abbreviated as "Dimethicone 20cs"). 2The dimethicone with a kinetic viscosity of 1,000,000 mm is the product name "KF-96A-100cs" (hereinafter abbreviated as "Dimethicone 100cs"). 2 The dimethicone used in / s is dimethicone with the product name "KF-96H-1 million cs" (hereinafter abbreviated as "Dimethicone 1 million cs"). Below, dimethicone that does not correspond to component (A) may be referred to as component (A').

[0147] Component (B) is a commercially available product manufactured by Nisshin Oillio Group Co., Ltd., which includes isononyl isononanoate (trade name "Salakos 99"), isotridecyl isononanoate (trade name "Salakos 913"), neopentyl glycol diethylhexanoate (trade name "Salakos 525"), glyceryl triethylhexanoate (trade name "TIO"), glyceryl triisostearate (trade name "Salakos 3318"), diisostearyl malate (trade name "Cosmol 222"), and pentaerythrityl tetraethylhexanoate (trade name "Salakos 5408") The ingredients used were neopentyl glycol dicaprate (trade name "Estemol N-01"), dicaprylic / capric propanediol (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"), tricaprylic / capric triglyceride (trade name "ODO"), and dipentaerythrityl pentaisostearate (trade name "Salacos DP-518N").

[0148] As component (C), the following commercially available products manufactured by Nisshin Oillio Group, Ltd. were used: propanediol diisostearate (trade name "Salakos PR-17"), trimethylolpropane triisostearate (trade name "Salakos 6318V"), pentaerythrityl tetraisostearate (trade name "Salakos 5418V"), polyglyceryl-2 tetraisostearate (trade name "Cosmol 44V"), polyglyceryl-2 triisostearate (trade name "Cosmol 43V"), and ethylhexyl hydroxystearate (trade name "Salakos EH").

[0149] An example of a liquid oily composition according to one embodiment of the present invention will now be described. The formulations (% by mass) of the liquid oily compositions and the evaluations of the liquid oily compositions are shown in Tables 4 to 14. The numerical values ​​in the component columns of Tables 4 to 14 each mean % by mass.

[0150] (Raw material for liquid oily composition) As the pigment, iron oxide manufactured by Daito Kasei Co., Ltd. (product name "OTS-2 RED R-516") was used. As the macadamia nut oil, macadamia nut oil (product name "Refined Macadamia Nut Oil") manufactured by Yokoseki Oil Industry Co., Ltd. was used.

[0151] [Method for preparing liquid oily composition] The components (A) or (A'), (B) and (C) in the formulations shown in Tables 4 to 14 were weighed into the same screw tube and then shaken well to prepare liquid oily compositions. For the liquid oil-based compositions obtained in Tables 4 to 7, compatibility 1, compatibility 2, the viscosity of the mixture of component (B) and component (C), the effect of inhibiting secondary adhesion of pigment, water repellency strength, and the durability of water repellency were examined using the methods described below, and an overall evaluation (effect of inhibiting secondary adhesion of pigment, and the strength and durability of water repellency) was performed. In addition, for the liquid oily compositions obtained in Tables 8 to 14, compatibility 1 and compatibility 2 were examined by the methods described below.

[0152] [Evaluation method for compatibility 1] The screw tube containing the prepared liquid oily composition was left to stand for 5 minutes at 25° C. Thereafter, the appearance of the liquid oily composition was visually confirmed, and the compatibility was evaluated using the following evaluation criteria for compatibility 1. The compatibility of this prepared liquid oily composition is defined as compatibility 1.

[0153] [Evaluation criteria for compatibility 1] S: At 25°C, the appearance is transparent and uniform without separation, cloudiness or turbidity, and the materials are compatible (compatible). IS: At 25°C, the appearance is separated, cloudy or turbid, and the mixture is not compatible (incompatible).

[0154] The liquid oily composition of the present invention requires that the mixture of components (A), (B), and (C) is transparent and homogeneous, i.e., that the compatibility 1 is rated "S".

[0155] [Evaluation method for compatibility 2] 8 parts by mass of macadamia nut oil was added to 100 parts by mass of the liquid oily mixture evaluated as compatibility 1, and then the mixture was thoroughly shaken. The screw tube was then left to stand 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 nut oil to the liquid oily composition is defined as compatibility 2.

[0156] [Evaluation criteria for compatibility 2] S: The appearance is transparent and uniform without separation, cloudiness or turbidity, and the materials are compatible (compatible). IS: The appearance is separated, cloudy or turbid, and the materials are not compatible (incompatible).

[0157] The liquid oily composition of the present invention is required to be incompatible when 8 parts by mass of macadamia nut oil is added to 100 parts by mass of the liquid oily composition, i.e., compatibility 2 is rated "IS".

[0158] [Evaluation of Compatibility 1 and Compatibility 2] In the liquid oily composition, when the compatibility 1 is rated "S" and the compatibility 2 is rated "IS", the liquid oily composition exhibits the effects of the present invention.

[0159] [Viscosity of mixture of component (B) and component (C)] The viscosity of the mixture of components (B) and (C) at 25° C. was measured using a B-type viscometer. In measuring the viscosity, the rotor and rotation speed were appropriately selected so that the reading would be 10 to 90, and the value 60 seconds after the start of rotation was read and converted into a viscosity value.

[0160] [Method for evaluating the effect of suppressing secondary adhesion of pigments] (I) Liquid oily compositions were obtained by blending components (A), (B), and (C) according to the formulations shown in Tables 4, 5, 6, and 7. 5% by mass of a pigment was added to the total mass of the obtained liquid oily composition. Iron oxide was used as the pigment. The mixture was then placed in an ultrasonic cleaner and subjected to ultrasonic treatment for 60 minutes while occasionally shaking and mixing. (II) A 3 cm x 3 cm area was created on the inside of the forearm after washing to remove sebum. 3 μL of macadamia nut oil was applied to the created area as a substitute for the removed sebum. (III) 9 μL of the liquid oily composition containing the pigment prepared in (I) was applied on top of the macadamia nut oil and left to stand for 3 minutes. (IV) The applied area was covered with tissue paper and lightly pressed from above. The tissue paper was then peeled off and the degree of transfer of the pigment to the tissue paper was evaluated.

[0161] [Calculation of secondary adhesion area] The degree of pigment transfer onto the tissue paper was evaluated by photographing the tissue from a height of 25 cm from the subject (tissue) and processing the photographed image. The image was processed using the image processing software "ImageJ", and the image was trimmed to include the entire transfer range and to be at the center, and the area of ​​the black part was calculated after binarization. In the binarization process, the photographed image (color image) was first converted to a grayscale image by 8-bit conversion. After that, the grayscale image was binarized by setting pixel values ​​in the range of 0 to 195 as black and pixel values ​​in the range of 196 to 255 as white.

[0162] Photographs (actual photographs) taken in Example 1 and Comparative Example 1, and diagrams obtained by binarizing these photographs, are shown in FIG.

[0163] [Evaluation criteria for suppressing secondary pigment adhesion] The suppression of secondary adhesion of pigment was evaluated using the ratio of the detected area of ​​the black part calculated in [Calculation conditions for secondary adhesion area]. A: Detection area is less than 25%. B: Detection area is 25% or more but less than 28%. C: Detection area is 28% or more but less than 30%. D: Detection area is 30% or more. D, where the detection area was 30% or more, was judged to be ineffective.

[0164] [Method for evaluating water repellency strength] (I) 3 μL of macadamia nut oil was applied to a 50 mm × 50 mm PMMA plate. (II) 9 μL of a liquid oily composition prepared according to the formulation shown in Tables 3 and 4 was applied thereon. (III) After leaving it for 3 minutes, 20 μL of ion-exchanged water was dropped onto the coating film applied to the plate, and the plate was tilted to measure the angle at which the water droplet started to move.

[0165] [Evaluation criteria for water repellency strength] A: The plate began to move when its tilt angle was less than 40 degrees. B: The plate began to move when its tilt angle was between 40 and 41 degrees. C: The plate began to move when the tilt angle was between 42 degrees and 43 degrees. D: The plate did not move even when the inclination angle was more than 43 degrees.

[0166] [Method for evaluating water repellency durability] (I) A PMMA plate prepared in the same manner as in [Method for evaluating water repellency strength] was immersed in ion-exchanged water kept at 40° C. for 10 minutes and then allowed to dry naturally. (II) Then, 20 μL of ion-exchanged water was dropped onto the coating film applied to the plate, and the plate was tilted to measure the angle at which the water droplet began to move.

[0167] [Evaluation criteria for durability of water repellency] A: The plate began to move when its tilt angle was less than 34 degrees. B: The plate began to move when its tilt angle was between 34 and 35 degrees. C: The plate began to move when the tilt angle was between 35 degrees and 36 degrees. D: The plate did not move even when the inclination angle was more than 36 degrees.

[0168] [Comprehensive evaluation of the effect of suppressing secondary adhesion of pigments, strength and durability of water repellency] The evaluation scores for the effect of inhibiting secondary adhesion of pigment, strength of water repellency, and durability of water repellency of the liquid oil-based composition to be evaluated 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 overall evaluation score. However, a liquid oil-based composition that received a D rating in any of the evaluations for the effect of inhibiting secondary adhesion of pigment, strength of water repellency, and durability of water repellency of the liquid oil-based composition to be evaluated was determined to not exhibit the effects of the present invention.

[0169] [Table 4]

[0170] [Table 5]

[0171] [Table 6]

[0172] [Table 7]

[0173] [Table 8]

[0174] [Table 9]

[0175] [Table 10]

[0176] [Table 11]

[0177] [Table 12]

[0178] [Table 13]

[0179] [Table 14]

[0180] From the results of Tables 4 to 7, it was confirmed that the liquid oil-based compositions of Examples 1 to 7, which were formulated using dimethicone 5cs or dimethicone 10cs as component (A) and had a compatibility 1 rating of S (compatible) and compatibility 2 rating of IS (incompatible), had an excellent effect of suppressing secondary adhesion of pigments and had excellent water repellency with strength and durability. This was presumed to be because component (A) mixed with sebum and separated when applied to the skin, forming a silicone film on the surface.

[0181] On the other hand, the liquid oil composition of Comparative Example 1 uses dimethicone 10cs as component (A) but does not contain component (C), and was evaluated as S (compatible) in compatibility 1 and compatibility 2. As a result, it was a liquid oil composition with low effect of suppressing secondary adhesion of pigment, strength and durability of water repellency. In addition, the liquid oil composition of Comparative Example 2 uses dimethicone 10cs as component (A) but does not contain component (B), and was evaluated as IS (incompatible) in compatibility 1 and compatibility 2. Since the liquid oil composition of Comparative Example 2 was in a non-uniform state, the effect of suppressing secondary adhesion, strength and durability of water repellency were not evaluated.

[0182] In addition, the liquid oily compositions of Comparative Examples 3 and 5, which use dimethicone 10cs as component (A), were evaluated as IS (incompatible) with compatibility 1 and compatibility 2. Since the liquid oily compositions of Comparative Examples 3 and 5 were in a non-uniform state, the secondary adhesion suppression effect, and the strength and durability of water repellency were not evaluated. In addition, the liquid oil compositions of Comparative Examples 4, 6 and 7, which used dimethicone 10cs as component (A), were rated as S (compatible) in compatibility 1 and compatibility 2, and were liquid oil compositions with low effect in inhibiting secondary adhesion of pigments, and low strength and durability of water repellency.

[0183] The liquid oil composition of Comparative Example 8 uses dimethicone 5cs as component (A), but was rated as S (compatible) for compatibility 1 and compatibility 2. Judging from the evaluation results of Comparative Examples 4, 6, and 7, which had the same compatibility evaluation, it is highly likely that the liquid oil composition of Comparative Example 8 is also a liquid oil composition with low effect of suppressing secondary adhesion of pigments, and low strength and durability of water repellency. The liquid oily composition of Comparative Example 9 uses dimethicone 5cs as component (A), but was rated IS (incompatible) with compatibility 1 and compatibility 2. The liquid oily composition of Comparative Example 9 was in a non-uniform state, so the secondary adhesion suppression effect, strength and durability of water repellency were not evaluated.

[0184] The liquid oil compositions of Comparative Examples 10 and 11, which used Dimethicone 20cs, had low effects in suppressing secondary adhesion of pigments, even though they were rated S (compatible) for compatibility 1 and IS (incompatible) for compatibility 2. From these results, it was found that Dimethicone 20cs cannot be used as the dimethicone of component (A). Furthermore, the liquid oily composition of Comparative Example 12, which used Dimethicone 20cs, was rated S (compatible) for compatibility 1 and compatibility 2. Judging from the evaluation results of Comparative Examples 4, 6, and 7, which had the same compatibility evaluation, it is highly likely that the liquid oily composition of Comparative Example 12 is also a liquid oily composition with low effect of inhibiting secondary adhesion of pigments, and low strength and durability of water repellency. The liquid oily composition of Comparative Example 13, which used Dimethicone 20cs, was evaluated as IS (incompatible) with compatibility 1 and compatibility 2. Since the liquid oily composition of Comparative Example 13 was in a non-uniform state, the effect of inhibiting secondary adhesion, and the strength and durability of water repellency were not evaluated.

[0185] The liquid oil compositions of Comparative Example 14, which uses the same formulation as in Example 6 but replaces Dimethicone 10cs with Dimethicone 1cs, and Comparative Example 15, which uses Dimethicone 10cs with Dimethicone 2cs, were evaluated as S (compatible) for compatibility 1 and compatibility 2. Judging from the evaluation results of Comparative Examples 4, 6, and 7, which had the same compatibility evaluation, it is highly likely that the liquid oil compositions of Comparative Examples 14 and 15 are also liquid oil compositions with low effect of suppressing secondary adhesion of pigments, and low strength and durability of water repellency. From this result, it was found that Dimethicone 1cs and Dimethicone 2cs cannot be used as the dimethicone of component (A).

[0186] From these results, it was found that when compatibility 1 was rated "S" and compatibility 2 was rated "IS", a silicone film was formed by the separated dimethicone, and as a result, the effects of the present invention were exerted.

[0187] The liquid oil-based compositions of Examples 8 to 41 in Tables 8 to 10 and 13 were not evaluated for the effect of inhibiting secondary adhesion of pigments, or for the strength and durability of water repellency. However, since dimethicone 10cs was used as component (A) and compatibility 1 was evaluated as S (compatible) and compatibility 2 was evaluated as IS (incompatible), judging from the evaluation results of Examples 1 to 5, which also used dimethicone 10cs as component (A) and had the same compatibility evaluation, the liquid oil-based compositions of Examples 8 to 41 are also highly likely to be oil-based compositions having excellent effect of inhibiting secondary adhesion of pigments, and excellent water repellency with strength and durability. Furthermore, the effect of inhibiting secondary adhesion of pigments, and the strength and durability of water repellency were not evaluated for the liquid oil compositions of Comparative Examples 16 to 49 in Tables 10 to 12 and Table 14. However, the liquid oil compositions of the Comparative Examples that were rated S (compatible) for compatibility 1 and compatibility 2 are likely to be liquid oil compositions that use dimethicone 10cs as component (A), and have low effect of inhibiting secondary adhesion of pigments, and low strength and durability of water repellency, judging from the evaluation results of Comparative Examples 4, 6, and 7, which had the same compatibility evaluation. In addition, the liquid oily compositions of the comparative examples, which were rated as IS (incompatible) for compatibility 1 and compatibility 2 in Tables 10 to 12 and 14, were in a non-uniform state, so the effect of inhibiting secondary adhesion and the strength and durability of water repellency were not evaluated.

[0188] [2. Evaluation of cosmetics] Next, cosmetics containing a liquid oily composition, which is another embodiment of the present invention, were investigated. The cosmetics of Examples 42 and 43 and Comparative Examples 50 to 54 shown in Tables 15 and 16 were prepared by the methods described below, and then evaluated according to the evaluation methods and criteria described below. For water-in-oil foundations, the "effect of suppressing secondary adhesion of cosmetics," "softness of cosmetic film," "strength of water-repellency," and "durability of water-repellency" were evaluated. For oil-in-water moisturizing creams, the "softness of cosmetic film," "strength of water-repellency," and "durability of water-repellency" were evaluated.

[0189] [Method for evaluating inhibition of secondary adhesion of cosmetics] (I) A 3 cm x 3 cm area was created on the inside of the forearm after washing and removing sebum. 3 μL of macadamia nut oil was applied to the created area as a substitute for the removed sebum. (II) 18 μL of the cosmetic material to be evaluated was applied thereon and left to stand for 3 minutes. (III) The applied area was covered with tissue paper, lightly pressed down on and peeled off to evaluate the degree of pigment transfer to the tissue paper.

[0190] [Calculation of secondary adhesion area] The secondary adhesion area was calculated in the same manner as in [Calculation of secondary adhesion area] for the liquid oily composition described above.

[0191] Photographs (actual images) taken in Example 42 and Comparative Example 50 and images obtained by binarizing these photographs are shown in FIG.

[0192] [Evaluation criteria for suppressing secondary adhesion of cosmetics] The suppression of secondary adhesion of pigment was evaluated using the ratio of the detected area of ​​the black part calculated in [Calculation conditions for secondary adhesion area]. A: Detection area is less than 15%. B: Detection area is 15% or more but less than 20%. C: Detection area is 20% or more but less than 25%. D: Detection area is 25% or more. D, where the detection area was 30% or more, was judged to be ineffective.

[0193] [Method for evaluating cosmetic film flexibility] (I) A 3 cm x 3 cm area was created on the inside of the forearm after washing and removing sebum. (II) 3 μL of macadamia nut oil was applied to the prepared area as a substitute for the removed sebum. (III) 18 μL of the cosmetic material to be evaluated was applied on top of the macadamia nut oil and left to stand for 30 minutes. (IV) The feel of the applied area was evaluated by 10 monitors.

[0194] [Evaluation criteria for cosmetic film flexibility] A: 8 to 10 out of 10 people felt that the cosmetic film was flexible. B: 5 to 7 out of 10 people felt that the cosmetic film was flexible. C: 2 to 4 out of 10 people felt that the cosmetic film was flexible. D: Less than 1 in 10 people felt the cosmetic film was flexible.

[0195] [Method for evaluating water repellency strength] (I) 5 μL of macadamia nut oil was applied to a 50 mm × 50 mm PMMA plate. (II) 20 μl of the cosmetic material to be evaluated was applied thereon and left for 5 minutes. (III) 20 μL of ion-exchanged water was dropped onto the coating film applied to the plate, and the plate was tilted to measure the angle at which the water droplet began to move.

[0196] [Evaluation criteria for water repellency strength] A: The plate began to move when its tilt angle was less than 40 degrees. B: The plate began to move when its tilt angle was between 40 degrees and 42 degrees. C: The plate began to move when the tilt angle was between 42 degrees and 43 degrees. D: The plate did not move even when the inclination angle was more than 43 degrees.

[0197] [Method for evaluating water repellency durability] (I) Evaluation of Water Repellency A PMMA plate prepared in the same manner as in the evaluation of water repellency was immersed in ion-exchanged water kept at 40° C. for 10 minutes and then allowed to dry naturally. (II) Then, 20 μL of ion-exchanged water was dropped onto the coating film applied to the plate, and the plate was tilted to measure the angle at which the water droplet began to move.

[0198] [Evaluation criteria for durability of water repellency] A: The plate began to move when its tilt angle was less than 34 degrees. B: The plate began to move when its tilt angle was between 34 and 35 degrees. C: The plate began to move when the tilt angle was between 35 degrees and 36 degrees. D: The plate did not move even when the inclination angle was more than 36 degrees.

[0199] [Water-in-oil foundation: Comprehensive evaluation of secondary adhesion prevention effect, flexibility of cosmetic film, water-repellent strength, and durability of water-repellent properties] The cosmetic products evaluated were scored for their effectiveness in inhibiting secondary adhesion of pigments, the flexibility of the cosmetic film, the strength of water repellency, and the durability of water repellency in each evaluation. The scores were calculated as follows: A = 4 points, B = 3 points, C = 2 points, and D = 1 point. The sum of each evaluation score was used to determine the overall evaluation score.

[0200] [Oil-in-water moisturizing cream: Comprehensive evaluation of cosmetic film flexibility, water-repellent strength, and water-repellent durability] The cosmetic compositions evaluated were scored for the softness of the cosmetic film, the strength of water repellency, and the durability of water repellency, with A being 4 points, B being 3 points, C being 2 points, and D being 1 point, and the sum of each evaluation score was calculated as the overall evaluation score.

[0201] (water-in-oil foundation) As a water-in-oil foundation (a cosmetic product according to 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, was used to prepare a water-in-oil foundation incorporating the liquid oily composition.

[0202] The formulation and evaluation results of the water-in-oil foundation are shown in Table 15. The polyether-modified silicone used was "KF-6017" manufactured by Shin-Etsu Chemical Co., Ltd. The trimethylsiloxysilicate used was "KF-7312J" manufactured by Shin-Etsu Chemical Co., Ltd. as a film-forming agent.

[0203] [Manufacturing method of water-in-oil foundation] The water-in-oil foundation was produced by the following steps a to c. a: Components 1 to 10 were heated to dissolve and mixed uniformly. b: Components 11 to 13 were dissolved by heating and mixed uniformly. c: The mixture obtained in step b at 80°C was added to the mixture obtained in step a at 80°C, emulsified, and cooled.

[0204] [Table 15]

[0205] As shown in Table 15, it was confirmed that the cosmetic of Example 42 had an excellent effect of suppressing secondary adhesion of pigments, flexibility of the silicone film, and excellent water repellency with strength and durability. Comparative Example 50 was a cosmetic using a liquid oily composition that did not contain component (A), and Comparative Example 51 was a cosmetic using a liquid oily composition that did not contain component (C). Although the flexibility of the cosmetic film was good, the effect of suppressing secondary adhesion of pigments, and the strength and durability of water repellency were low. Comparative Example 52 was a cosmetic using the composition of Comparative Example 50 to which trimethylsiloxysilicate was added as a film-forming agent, but the effect of suppressing secondary adhesion, the strength and durability of water repellency were low, and the flexibility of the cosmetic film was also poor.

[0206] From these results, it can be seen that when compatibility 1 was rated "S" and compatibility 2 was rated "IS", a silicone film was formed by the separated dimethicone (ingredient (A)), and as a result, the effects of the present invention were exerted.

[0207] (Oil-in-water moisturizing cream) As an oily component, 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 ratio such that the (B) / (C) mass ratio was 3.0 and the {(B)+(C)} / (A) mass ratio was 4.0, and an oil-in-water cream containing the liquid oily composition was produced.

[0208] The formulation and evaluation results of the oil-in-water moisturizing cream are shown in Table 16. For the cetanol, Kao Corporation's "Kalcol 6870" was used, for the polyglyceryl-10 stearate, Nisshin Oillio Group's "Salacos PGMSV" was used, and for the polyglyceryl-10 distearate, Nisshin Oillio Group's "Salacos PGDSV" was used.

[0209] [Method of manufacturing oil-in-water moisturizing cream] The oil-in-water moisturizing cream was produced by the following steps a to c. a: Components 1 to 4 were heated to dissolve and mixed uniformly. b: Components 5 to 8 were heated to dissolve and mixed uniformly. c: The mixture obtained in step a at 80°C was added to the mixture obtained in step b at 80°C, emulsified, and cooled.

[0210] [Table 16]

[0211] As shown in Table 16, it was confirmed that the coating film formed by applying the cosmetic of Example 43 had excellent water repellency with flexibility, strength and durability. On the other hand, the cosmetic films of Comparative Examples 53 and 54 had excellent flexibility, but the strength and durability of the water repellency were low. From these results, it was found that when compatibility 1 was rated "S" and compatibility 2 was rated "IS", a silicone film was formed by the separated dimethicone (ingredient (A)), and as a result, the effects of the present invention were exerted. [Industrial Applicability]

[0212] According to the present invention, it is possible to provide a liquid oily composition that exhibits the effect of inhibiting secondary adhesion of cosmetics and can impart strong and long-lasting water repellency, and a cosmetic containing said liquid oily composition.

Claims

1. Component (A): A compound having a kinetic viscosity of 4 to 12 mm at 25°C. ２ / s dimethicone; Component (B): An ester oil which is liquid at 25°C and has a dimethicone compatibility value of 1.75 or more as calculated by the following formula (I), and which is selected from the group consisting of isononyl isononanoate, isotridecyl isononanoate, neopentyl glycol diethylhexanoate, glyceryl triethylhexanoate, glyceryl triisostearate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure in the fatty chain), diisostearyl malate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure in the fatty chain), pentaethyl tetrahexanoate, and the like. One or more ester oils selected from the group consisting of listhrityl, neopentyl glycol dicaprate, di(caprylic / capric)propanediol, polyglyceryl-2 triisostearate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure in the fatty chain), cetyl ethylhexanoate, ethylhexyl palmitate, tri(caprylic / capric)glyceryl, and dipentaerythrityl pentaisostearate (having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure in the fatty chain); and Component (C): An ester oil which is liquid at 25°C and has a dimethicone compatibility value of less than 1.75 as determined by the following formula (I), and which is one or more ester oils selected from the group consisting of propanediol diisostearate, trimethylolpropane triisostearate, pentaerythrityl tetraisostearate, polyglyceryl-2 tetraisostearate, polyglyceryl-2 triisostearate, and ethylhexyl hydroxystearate. A liquid oily composition comprising: It is transparent and homogeneous at 25°C, and A liquid oily composition in which component (A) separates from a mixture in which 8 parts by mass of macadamia nut oil is added to 100 parts by mass of the liquid oily composition (excluding polyhydric alcohol-modified silicone represented by the following average composition formula (i)). R1 ａ R2 ｂ R3 ｃ SiO( ４－ａ－ｂ－ｃ ) ／２ (i) [In the formula, R1 represents an alkyl group having 1 to 30 carbon atoms, an aryl group, an aralkyl group, a fluorine-substituted alkyl group, an amino-substituted alkyl group, a carboxy-substituted alkyl group, or a group represented by the following general formula (ii): -C ｄ H ２ｄ -O-(C ２ H ４ O) ｅ (C ３ H ６ O) ｆ -R4 (ii) (wherein R4 represents a hydrocarbon group having 4 to 30 carbon atoms, or an organic group represented by R5-(CO)-, R5 represents a hydrocarbon group having 1 to 30 carbon atoms, d represents an integer of 0≦d≦15, and e and f represent integers of 0≦e≦50 and 0≦f≦50, respectively); R2 is represented by the following general formula (iii): -Q-O-X (iii) (wherein Q represents a divalent hydrocarbon group having 3 to 20 carbon atoms which may contain at least one of an ether bond and an ester bond, and X represents a polyhydric alcohol-substituted hydrocarbon group having at least two hydroxyl groups). R3 is represented by the following general formula (iv): 【number】 (wherein R1 is the same as above, g is an integer of 1≦g≦5, and h is an integer of 0≦h≦500), a, b, and c are in the ranges 1.0≦a≦2.5, 0.001≦b≦1.5, and 0.001≦c≦1.5, respectively.]). [0010]

2. the mass ratio ((B) / (C)) of the component (B) to the component (C) is 0.32 to 18.00; The liquid oily composition according to claim 1, wherein the mass ratio ({(B)+(C)} / (A)) of the total amount of the component (B) and the component (C) to the component (A) is 1.50 to 12.

33.

3. 2. The liquid oily composition according to claim 1, wherein the mixture of said component (B) and said component (C) has a viscosity at 25° C. of 30 to 1,200 mPa·s.

4. The liquid oily composition according to claim 1, wherein the content of component (A) is 8.30% by mass to 32.50% by mass, the content of component (B) is 24.70% by mass to 71.20% by mass, and the content of component (C) is 5.00% by mass to 67.00% by mass, based on 100% by mass of the liquid oily composition.

5. A cosmetic preparation comprising the liquid oily composition according to any one of claims 1 to 4.

6. The cosmetic preparation according to claim 5, further comprising component (D): powder.

7. 7. The cosmetic preparation according to claim 6, wherein the component (D) is a body pigment, a color pigment, or a pearl pigment.

8. The cosmetic according to claim 6, wherein the content of the component (D) in the entire cosmetic is 1% by mass to 30% by mass.

9. A method for producing a cosmetic, comprising incorporating the liquid oily composition according to any one of claims 1 to 4 as a raw material.

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