Oil-in-water type solid cosmetic

Abstract

To provide an oil-in-water type solid cosmetic that is capable of retaining its form when applied.SOLUTION: An oil-in-water type solid cosmetic comprising the following components (A) to (D): (A) an ester of one or more carboxylic acids selected from those having 20 to 24 carbon atoms and polyglycerol, (B) a solid oil having a melting point of 50°C or more and 130°C or less, (C) a liquid oil having a melting point of 25°C or less, and (D) water.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a water-in-oil solid cosmetic preparation, and more particularly to a water-in-oil solid cosmetic preparation that has excellent filling moldability, shape retention upon application, and good application to the skin, as well as good stability over time at high temperatures. [Background technology]

[0002] In conventional solid or semi-solid water-in-oil cosmetic compositions, solid oils, oily thickeners, etc. are blended in the external phase to ensure shape or stability over time.

[0003] Patent Document 1 discloses an oil-based solid cosmetic composition that combines a dextrin fatty acid ester, a naturally derived solid fat and / or semi-solid fat, and isoparaffin having a specific average molecular weight and kinematic viscosity, and that has excellent texture in use, skin protection, and stability over time. However, the solid oil-based cosmetic composition disclosed in Patent Document 1 does not contain water, making it difficult to incorporate water-soluble or hydrophilic drugs, etc.

[0004] Patent Document 2 discloses a novel water-in-oil solid emulsion cosmetic that has good stability, and despite being in a solid form, has a cool feeling when applied to the skin and a refreshing feeling after application, and also has a moist feel and a comfortable fit upon application.

[0005] Patent Document 3 discloses a water-in-oil solid emulsion cosmetic that is easy to use, providing an excellent fit when applied and allowing for even application without streaking, and that is stable even when a large amount of ester-based oil is blended. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent Publication No. 2017-114780 [Patent Document 2] Patent No. 3524717 [Patent Document 3] Patent No. 6765342 Summary of the Invention [Problem to be solved by the invention]

[0007] In recent years, stick-shaped solid cosmetics have become popular due to their ease of use and portability. However, stick-shaped solid cosmetics are subject to stress when applied to the skin, which can lead to significant deformation of the cosmetic product. However, none of the patent documents considers shape retention.

[0008] Therefore, an object of the present disclosure is to provide a water-in-oil solid cosmetic preparation that has excellent shape retention upon application. [Means for solving the problem]

[0009] An example of the present disclosure is as follows: [Section 1] A water-in-oil solid cosmetic preparation comprising the following components (A) to (D): (A) An ester of a carboxylic acid and a polyglycerol, wherein the carboxylic acid contains a carboxylic acid having 20 to 24 carbon atoms. (B) Solid oil with a melting point of 50°C or higher and 130°C or lower (C) Liquid oils with a melting point of 25°C or less, and (D)Water [Section 2] Item 2. The solid cosmetic according to Item 1, wherein the degree of polymerization of the polyglycerin is 8 or more and 12 or less. [Section 3] Item 3. The solid cosmetic preparation according to Item 1 or 2, wherein the carboxylic acid includes behenic acid and / or eicosanedioic acid. [Section 4] Item 4. The solid cosmetic preparation according to any one of Items 1 to 3, wherein the ester (A) is a monoester. [Section 5] Item 5. The solid cosmetic preparation according to any one of Items 1 to 4, wherein the amount of the ester (A) in the cosmetic preparation is 0.5% by mass or more and 10% by mass or less. [Section 6] In the cosmetic, the amount of the solid oil (B) is Item 6. The solid cosmetic preparation according to any one of Items 1 to 5, wherein the content is 5% by mass or more and 20% by mass or less. [Section 6] Item 6. The solid cosmetic preparation according to any one of Items 1 to 5, further comprising (E) a nonionic surfactant other than the component (A). [Section 7] Item 7. The solid cosmetic preparation according to any one of Items 1 to 6, wherein the solid oil (B) is a solid oil containing no hydroxyl groups. [Section 8] 8. The solid cosmetic preparation according to claim 1, wherein the solid oil (B) is a hydrocarbon wax. [Section 9] Item 9. The solid cosmetic preparation according to any one of Items 1 to 8, wherein the liquid oil (C) is a liquid ester of a fatty acid and an alcohol. [Section 10] Item 10. The solid cosmetic preparation according to any one of Items 1 to 9, further comprising (E) a nonionic surfactant. [Section 11] Item 11. The solid cosmetic preparation according to Item 10, wherein the nonionic surfactant (E) is a polyglycerol fatty acid ester. [Section 12] Item 12. The solid cosmetic preparation according to Item 10 or 11, wherein the weighted average HLB of the nonionic surfactant (E) is 8 or more and 15 or less. [Section 13] In the ester (A), the degree of polymerization of the polyglycerin is 8 or more and 12 or less, and the carboxylic acid contains behenic acid and / or eicosanedioic acid, the solid oil (B) is a hydrocarbon wax, the liquid oil (C) is a liquid ester of a fatty acid and an alcohol, In the cosmetic, the amount of the ester (A) is 0.5% by mass or more and 10% by mass or less, 2. The solid cosmetic preparation according to claim 1, wherein the amount of the solid oil (B) is 5% by mass or more and 20% by mass or less. [Effects of the Invention]

[0010] The water-in-oil solid cosmetic preparation of the present disclosure has excellent shape retention upon application. DETAILED DESCRIPTION OF THE INVENTION

[0011] The present disclosure will be described in detail below. Note that the units of content are all % by mass unless otherwise specified.

[0012] The solid cosmetic preparation according to the present disclosure is a water-in-oil type solid cosmetic preparation containing the following components (A) to (D): (A) An ester of a carboxylic acid and a polyglycerol, wherein the carboxylic acid contains a carboxylic acid having 20 to 24 carbon atoms. (B) Solid oil with a melting point of 50°C or higher and 130°C or lower (C) Liquid oil with a melting point of 25°C or less (D)Water The solid cosmetic preparation of the present disclosure has excellent shape retention when applied.

[0013] The solid cosmetic preparation of the present disclosure not only has excellent shape retention upon application, but also has excellent filling moldability and good application to the skin, and can have good stability over time at high temperatures.

[0014] <(A) Ester of Carboxylic Acid and Polyglycerol> The solid cosmetic preparation according to the present disclosure contains an ester (A) which is an ester of a carboxylic acid and a polyglycerin, wherein the carboxylic acid contains a carboxylic acid having 20 to 24 carbon atoms.

[0015] The carboxylic acid may be an aliphatic carboxylic acid, saturated or unsaturated. The carboxylic acid may be linear or branched, preferably linear. The carboxylic acid may be monovalent, divalent, or trivalent or higher, preferably monovalent or divalent.

[0016] Specific examples of carboxylic acids include arachidic acid, behenic acid, lignoceric acid, and eicosanedioic acid.

[0017] The carboxylic acid may contain a carboxylic acid other than a carboxylic acid selected from those having 20 to 24 carbon atoms, but the carboxylic acid may account for 80% or more, 90% or more, or 95% or more, preferably 100%, of the total molar amount of carboxylic acids selected from those having 20 to 24 carbon atoms. In other words, the carboxylic acid may consist of a carboxylic acid selected from those having 20 to 24 carbon atoms. The carboxylic acid other than a carboxylic acid selected from those having 20 to 24 carbon atoms may be a fatty acid, for example, a fatty acid having 2 to 19 carbon atoms or a fatty acid having 25 to 35 carbon atoms. These fatty acids may be linear, branched, or cyclic, and may be saturated or unsaturated.

[0018] The degree of polymerization of the polyglycerol may be 5 or more, 6 or more, 8 or more, or 10 or more, preferably 8 or more, more preferably 10 or more, and may be 18 or less, 16 or less, 14 or less, 12 or less, or 10 or less, preferably 14 or less, more preferably 12 or less.

[0019] In the ester (A), the remaining hydroxyl groups preferably constitute at least half of the total number of hydroxyl groups in the polyglycerol. The number of hydroxyl groups in the polyglycerol is determined based on the average degree of polymerization, which is calculated based on the hydroxyl value. In the case of a polyglycerol having an average degree of polymerization of n (n is an integer), half of the total number of hydroxyl groups in one mole is (n + 2) / 2. The proportion of hydroxyl groups can be measured by a method using nuclear magnetic resonance spectroscopy (NMR) for carbon atoms or by a method known in the art.

[0020] The ester (A) may be a monoester, diester, triester, tetraester, or a mixed ester thereof, preferably a monoester or diester, more preferably a monoester.

[0021] [Amount of ester (A)] The amount of ester (A) in the cosmetic may be 0.5% or more, 1% or more, 2% or more, 3% or more, or 4% or more, preferably 0.5% or more, more preferably 1% or more, even more preferably 3% or more, and most preferably 5% or more, and may be 15% or less, 10% or less, 8% or less, 7% or less, or 6% or less, preferably 15% or less, more preferably 12% or less, and even more preferably 10% or less. When the content of ester (A) is 0.5% or more, shape retention during application, applicability to the skin, and stability over time at high temperatures can be improved.

[0022] A specific example of the ester (A) is polyglyceryl-10 (behenate / eicosanedioate) (Nomcort HK-P: manufactured by Nisshin Oillio Group, Ltd.).

[0023] <(B) Solid oil with a melting point of 50°C or higher and 130°C or lower> The solid cosmetic preparation of the present disclosure contains a solid oil (B) having a melting point of 50° C. or higher and 130° C. or lower. The solid oil (B) is a solid oil other than the ester (A) of a carboxylic acid and a polyglycerin of the present disclosure.

[0024] The melting point of the solid oil (B) may be 50 ° C. or higher, 55 ° C. or higher, 60 ° C. or higher, 65 ° C. or higher, 70 ° C. or higher, 75 ° C. or higher, 80 ° C. or higher, 85 ° C. or higher, 90 ° C. or higher, 95 ° C. or higher, or 100 ° C. or higher, preferably 60 ° C. or higher, more preferably 70 ° C. or higher, and may be 130 ° C. or lower, 125 ° C. or lower, 120 ° C. or lower, 115 ° C. or lower, 110 ° C. or lower, 105 ° C. or lower, 100 ° C. or lower, 95 ° C. or lower, 90 ° C. or lower, 85 ° C. or lower, 80 ° C. or lower, 75 ° C. or lower, 70 ° C. or lower, or 65 ° C. or lower, preferably 100 ° C. or lower, more preferably 90 ° C. or lower. When the melting point is in the above range, the effects of the present disclosure can be suitably exhibited.

[0025] The solid oil (B) may be natural, synthetic, or a combination thereof. If the solid oil (B) is natural, it may be derived from plants, minerals, petroleum, or animals. These may be used alone or in combination.

[0026] The solid oil (B) may be an ester of a fatty acid and an alcohol. The solid oil (B) may be saturated or unsaturated, preferably saturated. The solid oil (B) may be linear, branched, or cyclic, preferably linear or branched. The solid oil (B) may be a fat or oil (an ester of glycerin and a fatty acid), a non-fat or oil, or a combination of a fat and a non-fat.

[0027] Specific examples of the solid oil (B) include hydrogenated jojoba oil, hydrogenated palm oil, hydrogenated castor oil, beeswax, Japan wax, candelilla wax, rice bran wax, candelilla wax esters, carnauba wax, sunflower seed wax, and hydrocarbon waxes (e.g., paraffin wax, synthetic wax, polyethylene wax, polypropylene wax, microcrystalline wax, hydrogenated microcrystalline wax, ethylene-propylene copolymer, ozokerite, ceresin wax, and Fischer-Tropsch wax), with sunflower seed wax, candelilla wax, rice bran wax, and hydrocarbon waxes being preferred. Note that "synthetic wax" is the name used in cosmetic labeling. The solid oil (B) preferably does not contain a hydroxyl group.

[0028] Specific examples of hydrocarbon waxes include polyethylene wax (PERFORMA SW-88 Synthetic Wax: manufactured by Univar Solutions), Fischer-Tropsch wax (VB-8070: manufactured by Nippon Wax Co., Ltd.), and synthetic wax (Jeenate 5SW: manufactured by Jeen International Corporation).

[0029] [Amount of solid oil (B)] The amount of solid oil (B) in the cosmetic may be 1% or more, 3% or more, 5% or more, 7% or more, 10% or more, 12% or more, 15% or more, 18% or more, 20% or more, 23% or more, or 25% or more, preferably 5% or more, more preferably 8% or more, and may be 50% or less, 45% or less, 40% or less, 35% or less, 30% or less, 25% or less, 22% or less, 18% or less, 15% or less, 14% or less, 10% or less, 8% or less, 6% or less, or 4% or less, preferably 20% or less, more preferably 18% or less, and even more preferably 12% or less. When the content of solid oil (B) is 5% or more, shape retention upon application can be improved. When the content of solid oil (B) is 20% or less, application to the skin can be improved.

[0030] <(C) Liquid oil> The solid cosmetic preparation of the present disclosure contains (C) a liquid oil having a melting point of 25° C. or lower. The liquid oil (C) is a liquid oil other than the ester (A) of a carboxylic acid and a polyglycerin of the present disclosure.

[0031] The melting point of the liquid oil (C) is −25° C. or higher, −20° C. or higher, −15° C. or higher, −10° C. or higher, −5° C. or higher, 0° C. or higher, 5° C. or higher, 10° C. or higher, 15° C. or higher, or 20° C. or higher, and may be 25° C. or lower, 23° C. or lower, 18° C. or lower, 13° C. or lower, 8° C. or lower, 3° C. or lower, −2° C. or lower, −7° C. or lower, −12° C. or lower, or −18° C. When the melting point is within the above range, the effects of the present disclosure can be suitably achieved.

[0032] The liquid oil (C) may be natural, synthetic, or a combination thereof. If the liquid oil (C) is natural, it may be of vegetable, mineral, petroleum, or animal origin.

[0033] Examples of the liquid oil (C) include liquid esters, liquid hydrocarbons, liquid ethers, liquid aliphatic alcohols, etc. These may be used alone or in combination of two or more.

[0034] The liquid oil (C) may include a liquid ester. The liquid ester may be an ester of a fatty acid and an alcohol. The liquid ester may be saturated or unsaturated, preferably saturated. The liquid ester may be linear, branched, or cyclic, preferably linear or branched. The liquid ester may be a fat or oil (an ester of glycerin and a fatty acid), a combination of a fat or oil and a non-fat substance, or a substance other than a fat or oil.

[0035] The fatty acids constituting the liquid ester may be saturated or unsaturated, preferably saturated. The fatty acids constituting the liquid ester may be linear, branched, or cyclic, preferably linear or branched. The number of carbon atoms in the fatty acids constituting the liquid ester may be 5 or more, 6 or more, 8 or more, 10 or more, 15 or more, 20 or more, or 25 or more, preferably 6 or more, more preferably 8 or more, and may be 40 or less, 35 or less, 30 or less, 25 or less, 20 or less, 16 or less, 12 or less, or 8 or less, preferably 30 or less, more preferably 25 or less.

[0036] The alcohol constituting the liquid ester may be monohydric or polyhydric (e.g., dihydric or trihydric), or a combination thereof. The alcohol constituting the liquid ester may be saturated or unsaturated, preferably saturated. The alcohol constituting the liquid ester may be linear, branched, or cyclic, preferably linear or branched. The number of carbon atoms in the alcohol constituting the liquid ester may be 1 or more, 2 or more, 3 or more, 5 or more, 6 or more, 8 or more, 10 or more, 15 or more, 20 or more, or 25 or more, or 40 or less, 35 or less, 30 or less, 25 or less, 20 or less, 16 or less, 12 or less, 8 or less, 6 or less, 4 or less, or 3 or less.

[0037] Examples of monohydric alcohols constituting the liquid ester include alcohols in which one hydrogen atom of an aliphatic hydrocarbon has been substituted with a hydroxy group. The number of carbon atoms in the monohydric alcohol constituting the liquid ester may be 1 or more, 2 or more, 3 or more, 5 or more, 6 or more, 8 or more, 10 or more, 15 or more, 20 or more, or 25 or more, and may be 40 or less, 35 or less, 30 or less, 25 or less, 20 or less, 16 or less, 12 or less, or 8 or less, preferably 30 or less, more preferably 20 or less.

[0038] Examples of dihydric alcohols constituting the liquid ester include glycols such as ethylene glycol, propylene glycol, propanediol, etc. When the alcohol constituting the liquid ester is dihydric, the number of carbon atoms may be 2 or more, 3 or more, 5 or more, 6 or more, 8 or more, 10 or more, 15 or more, 20 or more, or 25 or more, and may be 40 or less, 35 or less, 30 or less, 25 or less, 20 or less, 16 or less, 12 or less, 8 or less, 6 or less, 4 or less, or 3 or less, and is preferably 10 or less.

[0039] Examples of trihydric alcohols constituting the liquid ester include glycerin, etc. The number of carbon atoms in the trihydric alcohol constituting the liquid ester may be 2 or more, 3 or more, 5 or more, 6 or more, 8 or more, 10 or more, 15 or more, 20 or more, or 25 or more, and may be 40 or less, 35 or less, 30 or less, 25 or less, 20 or less, 16 or less, 8 or less, 10 or less, 12 or less, 8 or less, 6 or less, 4 or less, or 3 or less, and is preferably 10 or less.

[0040] Examples of polyhydric alcohols (tetrahydric or higher) constituting the liquid ester include sugar alcohols such as pentaerythritol. The number of carbon atoms in the polyhydric alcohol constituting the liquid ester may be 2 or more, 3 or more, 5 or more, 6 or more, 8 or more, 10 or more, 15 or more, 20 or more, or 25 or more, and may be 40 or less, 35 or less, 30 or less, 25 or less, 20 or less, 16 or less, 12 or less, 10 or less, 8 or less, 6 or less, 4 or less, or 3 or less, and preferably 10 or less.

[0041] Specific examples of liquid esters include octyldodecyl erucate (IOB value: 0.06), octyldodecyl isostearate (IOB value: 0.08), octyldodecyl oleate (IOB value: 0.08), isostearyl isostearate (IOB value: 0.09), hexyldecyl isostearate (IOB value: 0.09), oleyl oleate (IOB value: 0.09), isostearyl palmitate (IOB value: 0.09), octyldodecyl myristate (IOB value: 0.09), lauryl oleate (IOB value: 0.10), and isostearic acid. Cetyl (IOB value: 0.10), Isocetyl Palmitate (IOB value: 0.10), Isostearyl Myristate (IOB value: 0.10), Isocetyl Myristate (IOB value: 0.10), Decyl Oleate (IOB value: 0.11), Octyldodecyl Caprylate (IOB value: 0.11), Octyldodecyl Stearoyl Stearoyl Stearate (IOB value: 0.11), Isotridecyl Myristate (IOB value: 0.11), Isostearyl 2-Ethylhexanoate (IOB value: 0.12), Cetyl Caprate (IOB value: 0.12), Ethyl Stearate Cetylhexyl (IOB value: 0.12), stearyl 2-ethylhexanoate (IOB value: 0.12), cetostearyl isononanoate (IOB value: 0.12), hexyldecyl 2-ethylhexanoate (IOB value: 0.13), ethylhexyl isopalmitate (IOB value: 0.13), octyl isopalmitate (IOB value: 0.13), cetyl ethylhexanoate (IOB value: 0.13), hexyldecyl ethylhexanoate (IOB value: 0.13), ethylhexyl palmitate (IOB value: 0.13), 2-octyldodecyl neopentanoate (IOB value: 0.13), Hexyl Isostearate (IOB Value: 0.13), Coco-Caprylate / Caprate (IOB Value: 0.14), Isobutyl Isostearate (IOB Value: 0.14), Butyl Oleate (IOB Value: 0.14), Isostearyl Neopentanoate (IOB Value: 0.14), Isopropyl Isostearate (IOB Value: 0.15), Ethyl Isostearate (IOB Value: 0.15), Isotridecyl Isononanoate (IOB Value: 0.15), Cholesteryl Isostearate (IOB Value: 0.16), Ethyl Oleate (IOB Value: 0.16), Ethyl Linoleate (IOB Value: 0.16), Ethylene Glycol Diisostearate (IOB Value: 0.16), Propylene Glycol Diisostearate (IOB Value: 0.16), Ethylene Glycol Dioleate (IOB Value: 0.16), Propylene Glycol Dioleate (IOB Value: 0.16), Pentaerythrityl Tetraisostearate (IOB Value: 0.16), Pentaerythrityl Tetraethylhexanoate (IOB Value: 0.16), Triisostearin (IOB Value: 0.16), Trimethylol Propylene Triisostearate (IOB value: 0.16), Glyceryl Trioleate (IOB value: 0.16), Isopropyl Palmitate (IOB value: 0.16), Polyglyceryl-2 Tetraisostearate (IOB value: 0.17), Glyceryl Trilinoleate (IOB value: 0.17), Butyl Myristate (IOB value: 0.17), Hexyl Laurate (IOB value: 0.17), Myristyl Pivalate (IOB value: 0.17), Isodecyl Isononanoate (IOB value: 0.18), Glyceryl Triisopalmitate (IOB value: 0.18), Isopropyl Myristate (IOB value: 0.18) OB value: 0.18), isoamyl laurate (IOB value: 0.18), tridecyl pivalate (IOB value: 0.18), isononyl isononanoate (IOB value: 0.20), ethylhexyl isononanoate (IOB value: 0.20), isodecyl neopentanoate (IOB value: 0.22), neopentyl glycol dicaprate (IOB value: 0.25), diisostearyl malate (IOB value: 0.28), di(caprylic / capric) propanediol (IOB value: 0.29), tricyclodecanemethyl isononanoate (IOB value: 0.30), tri( Caprylic / Capric Glyceryl (IOB Value: 0.30), Ethylhexyl Hydroxystearate (IOB Value: 0.31), Diethylhexyl Succinate (IOB Value: 0.32), Neopentyl Glycol Diisononanoate (IOB Value: 0.32), Neopentyl Glycol Diethylhexanoate (IOB Value: 0.32), Hexyldecanol (IOB Value: 0.32), Trimethylolpropane Triethylhexanoate (IOB Value: 0.33), Tricaprylin (IOB Value: 0.33), Dipentaerythrityl Hexaisononanoate (IOB Value: 0.33).34), fatty acid esters of triethylhexanoin (IOB value: 0.34), isostearic acid (IOB value: 0.43), diisobutyl adipate (IOB value: 0.43), and polyglyceryl-6 octacaprylate (IOB value: 0.52);

[0042] Avocado oil (IOB value: 0.13), apricot kernel oil (IOB value: 0.16), olive fruit oil (IOB value: 0.16), sesame oil (IOB value: 0.16), camellia oil (IOB value: 0.16), safflower oil (IOB value: 0.16), camellia seed oil (IOB value: 0.16), tomato seed oil (IOB value: 0.16), persic oil (IOB value: 0.16), palm kernel oil (IOB value: 0.16), sunflower seed oil (IOB value: 0.16), grape seed oil (IOB value: 0.16), mink oil (IOB value: 0.16), meadowfoam oil (IOB value: 0.16), yuzu seed oil (IOB value: 0.16), yucha seed oil (IOB value: 0.16), soybean oil (IOB value: 0.16), macadamia seed oil (IOB value: 0.17), cottonseed oil (IOB value: 0.17), and other oils and fats;

[0043] liquid waxes such as jojoba seed oil (IOB value: 0.07); etc. These may be used alone or in combination of two or more.

[0044] The liquid oil (C) may include a liquid hydrocarbon, a liquid ether, or a liquid aliphatic alcohol. The liquid hydrocarbon, the liquid ether, or the liquid aliphatic alcohol may be saturated or unsaturated, and is preferably saturated. The liquid hydrocarbon, the liquid ether, or the liquid aliphatic alcohol may be linear, branched, or cyclic, and is preferably linear or branched.

[0045] Examples of liquid hydrocarbons, liquid ethers, and liquid aliphatic alcohols include saturated or unsaturated aliphatic hydrocarbons such as undecane (IOB value: 0), tridecane (IOB value: 0), squalene (IOB value: 0), squalane (IOB value: 0), liquid paraffin (IOB value: 0), light isoparaffin (IOB value: 0), light liquid isoparaffin (IOB value: 0), liquid isoparaffin (IOB value: 0), heavy liquid isoparaffin (IOB value: 0), and polybutene (IOB value: 0); saturated or unsaturated ethers such as dicaprylyl ether (IOB value: 0.06); and saturated or unsaturated aliphatic alcohols such as decyltetradecanol (IOB value: 0.21), octyldodecanol (IOB value: 0.26), oleyl alcohol (IOB value: 0.28), and isostearyl alcohol (IOB value: 0.29).

[0046] The IOB value of the liquid oil (C) may be 0 or more, 0.05 or more, 0.1 or more, 0.15 or more, or 0.2 or more, and may be 0.4 or less, 0.35 or less, 0.3 or less, 0.25 or less, 0.2 or less, or 0.15 or less.

[0047] As used herein, the ratio of inorganic value to organic value (Inorganic Organic Balance: IOB) is calculated using the following formula: IOB value = inorganic value / organic value This is the value calculated from

[0048] The average IOB value of the liquid oil (C) may be 0.5 or less, 0.45 or less, 0.4 or less, 0.35 or less, 0.3 or less, 0.25 or less, 0.2 or less, or 0.15 or less, preferably 0.45 or less, more preferably 0.35 or less, and even more preferably 0.3 or less. Most preferably, a liquid oil (C) having an IOB value of less than 0.2 and a liquid oil (C) having an IOB value of 0.2 or more are used in combination. When the average IOB value of the liquid oil (C) is 0.1 or more, shape retention upon application can be improved. Furthermore, when the average IOB value of the liquid oil (C) is 0.45 or less, shape retention upon application can be improved. When a single liquid oil (C) is used, the average IOB value refers to the IOB value of that liquid oil alone. In a mixed system containing two or more liquid oils (C), the IOB value of the mixed system can be calculated as a weighted average of the IOB values ​​of each individual liquid oil (C).

[0049] [Amount of liquid oil (C)] The amount of liquid oil (C) in the cosmetic may be 10% or more, 20% or more, 30% or more, 40% or more, 50% or more, 60% or more, or 70% or more, preferably 10% or more, more preferably 30% or more, and may be 70% or less, 65% or less, 60% or less, 55% or less, 50% or less, 45% or less, 40% or less, or 35% or less, preferably 70% or less, more preferably 60% or less. It is preferable that the amount of liquid oil (C) be within the above range from the viewpoint of optimally achieving the effects of the present disclosure.

[0050] <(D)Water> The solid cosmetic preparation according to the present disclosure contains water (D).

[0051] Water Volume The amount of water (D) in the cosmetic may be 5% or more, 10% or more, 15% or more, 20% or more, 25% or more, 30% or more, or 40% or more, preferably 10% or more, more preferably 15% or more, and even more preferably 20% or more, and may be 60% or less, 50% or less, 45% or less, or 40% or less, preferably 35% or less. It is preferable that the amount of water (D) be within the above range from the viewpoint of optimally achieving the effects of the present disclosure.

[0052] <(E) Nonionic Surfactant> The solid cosmetic preparation of the present disclosure contains a nonionic surfactant (E). Note that components (A) to (E) are different from one another, and the nonionic surfactant (E) is a nonionic surfactant other than the ester (A) of a carboxylic acid and a polyglycerin of the present disclosure.

[0053] Examples of the nonionic surfactant (E) include polyoxyethylene (hereinafter referred to as POE) alkyl ethers, POE polyoxypropylene (hereinafter referred to as POP) alkyl ethers, glycerin fatty acid esters, polyglycerin fatty acid esters, POE glycerin fatty acid esters, sorbitan fatty acid esters, POE sorbitan fatty acid esters, POE sorbitan fatty acid esters, POE sorbit fatty acid esters, POE hydrogenated castor oil, POE phytosterol, and polyethylene glycol fatty acid esters, and these may be used alone or in combination of two or more.

[0054] Specific examples of POE alkyl ethers include POE (5) decyl ether, POE (6) decyl ether, POE (2) lauryl ether, POE (3) lauryl ether, POE (4) lauryl ether, POE (5) lauryl ether, POE (7) lauryl ether, POE (8) lauryl ether, POE (9) lauryl ether, POE (12) lauryl ether, POE (15) lauryl ether, POE (19) lauryl ether, POE (21) lauryl ether, POE (25) lauryl ether, and POE (30) lauryl ether. POE (40) lauryl ether, POE (3) tridecyl ether, POE (5) tridecyl ether, POE (7) tridecyl ether, POE (8) tridecyl ether, POE (9) tridecyl ether, POE (10) tridecyl ether, POE (12) tridecyl ether, POE (15) tridecyl ether, POE (20) tridecyl ether, POE (2) cetyl ether, POE (5) cetyl ether, POE (7) cetyl ether, POE (8) cetyl ether, POE (10) cetyl ether, POE (13) cetyl ether, POE (15) cetyl ether, POE (20) cetyl ether, POE (23) cetyl ether, POE (25) cetyl ether, POE (30) cetyl ether, POE (40) cetyl ether, POE (150) cetyl ether, POE (2) stearyl ether, POE (3) stearyl ether, POE (4) stearyl ether, POE (5) stearyl ether, POE (7) stearyl ether, POE (10) stearyl ether, POE (11) stearyl ether, POE (15) stearyl ether, POE (20) stearyl ether, POE (30) stearyl ether, POE (40) stearyl ether, POE (50) stearyl ether, POE (100) stearyl ether, POE (8) isostearyl ether, POE (12) isostearyl ether, POE (16) isostearyl ether, POE (2) oleyl ether, POE (5) oleyl ether, POE (7) oleyl ether, POE (9) oleyl ether, POE (10) oleyl ether, POE (15) oleyl ether, POE (20) oleyl ether,Examples include POE (50) oleyl ether, POE (5) behenyl ether, POE (10) behenyl ether, POE (20) behenyl ether, and POE (30) behenyl ether. The number in parentheses after POE indicates the number of moles of ethylene oxide added.

[0055] Specific examples of POEPOP alkyl ethers include POE(7)POP(2) decyl ether, POE(10)POP(2) decyl ether, POE(1)POP(4) cetyl ether, POE(10)POP(4) cetyl ether, POE(20)POP(4) cetyl ether, POE(20)POP(8) cetyl ether, POE(30)POP(4) stearyl ether, POE(12)POP(6) decyltetradecyl ether, POE(20)POP(6) decyltetradecyl ether, POE(30)POP(6) decyltetradecyl ether, etc. The number in parentheses after POP indicates the number of moles of propylene oxide added.

[0056] Specific examples of glycerin fatty acid esters include glyceryl monoundecylenate, glyceryl monomyristate, glyceryl monostearate, glyceryl monoisostearate, glyceryl monooleate, and glyceryl distearate.

[0057] Specific examples of polyglycerin fatty acid esters include polyglyceryl-6 caprylate, polyglyceryl-2 caprate, polyglyceryl-6 caprate, polyglyceryl-10 caprate, polyglyceryl-2 sesquicaprate, polyglyceryl-6 dicaprate, polyglyceryl-4 monolaurate, polyglyceryl-5 monolaurate, polyglyceryl-6 monolaurate, polyglyceryl-10 monolaurate, and polyglyceryl-4 trilaurate. Glyceryl-6, Polyglyceryl-5 Monomyristate, Polyglyceryl-10 Monomyristate, Polyglyceryl-10 Dimyristate, Polyglyceryl-2 Monostearate, Polyglyceryl-4 Monostearate, Polyglyceryl-5 Monostearate, Polyglyceryl-6 Monostearate, Polyglyceryl-10 Monostearate, Polyglyceryl-2 Monoisostearate, Polyglyceryl-10 Monoisostearate, Distearate Polyglyceryl-10 Tristearate, Polyglyceryl-10 Triisostearate, Polyglyceryl-2 Monooleate, Polyglyceryl-4 Monooleate, Polyglyceryl-5 Monooleate, Polyglyceryl-10 Monooleate, Polyglyceryl-2 Sesquioleate, Polyglyceryl-5 Dioleate, Polyglyceryl-6 Dioleate, Polyglyceryl-10 Dioleate, Triolein Examples of suitable glycerin include polyglyceryl-5 trioleate, polyglyceryl-10 pentaoleate, polyglyceryl-5 polyricinoleate, polyglyceryl-6 polyricinoleate, polyglyceryl-10 pentastearate, polyglyceryl-10 pentahydroxystearate, polyglyceryl-10 pentaisostearate, polyglyceryl-10 pentaoleate, and polyglyceryl-10 decaoleate. The number after polyglyceryl indicates the polymerization degree of glycerin.

[0058] Specific examples of POE glycerin fatty acid esters include PEG-5 glyceryl monostearate, PEG-10 glyceryl monostearate, PEG-15 glyceryl monostearate, PEG-20 glyceryl monostearate, PEG-30 glyceryl monostearate, PEG-40 glyceryl monostearate, PEG-3 glyceryl monoisostearate, PEG-5 glyceryl monoisostearate, PEG-6 glyceryl monoisostearate, PEG-8 glyceryl monoisostearate, PEG-10 glyceryl monoisostearate, PEG-15 glyceryl monoisostearate, PEG-20 glyceryl monoisostearate, PEG-25 glyceryl monoisostearate, PEG-30 glyceryl monoisostearate, PEG-40 glyceryl monoisostearate, PEG-50 glyceryl monoisostearate, PEG-60 glyceryl monoisostearate, and PEG-10 glyceryl diisostearate. Glyceryl, PEG-20 Glyceryl Diisostearate, PEG-30 Glyceryl Diisostearate, PEG-60 Glyceryl Diisostearate, PEG-10 Glyceryl Tristearate, PEG-15 Glyceryl Tristearate, PEG-20 Glyceryl Tristearate, PEG-10 Glyceryl Triisostearate, PEG-15 Glyceryl Triisostearate, PEG-20 Glyceryl Triisostearate, PEG-30 Glyceryl Triisostearate Examples include glyceryl glyceryl triisostearate, PEG-40 glyceryl triisostearate, PEG-50 glyceryl triisostearate, PEG-60 glyceryl triisostearate, PEG-5 glyceryl monooleate, PEG-15 glyceryl monooleate, PEG-20 glyceryl trioleate, PEG-30 glyceryl monooleate, PEG-40 glyceryl monooleate, PEG-50 glyceryl monooleate, PEG-60 glyceryl monooleate, etc. The number after PEG indicates the polymerization degree of ethylene glycol.

[0059] Specific examples of sorbitan fatty acid esters include coconut oil sorbitan, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquistearate, sorbitan tristearate, sorbitan monoisostearate, sorbitan sesquiisostearate, sorbitan monooleate, sorbitan sesquioleate, and sorbitan trioleate.

[0060] Specific examples of POE sorbitan fatty acid esters include POE (20) sorbitan coconut oil fatty acid, POE (20) sorbitan monopalmitate, POE (6) sorbitan monostearate, POE (20) sorbitan monostearate, POE (20) sorbitan isostearate, POE (20) sorbitan tristearate, POE (6) sorbitan monooleate, POE (20) sorbitan monooleate, POE (20) sorbitan trioleate, and the like.

[0061] Specific examples of POE sorbitol fatty acid esters include POE (6) sorbitol monolaurate, POE (60) sorbitol tetrastearate, POE (30) sorbitol tetraisostearate, POE (6) sorbitol tetraoleate, POE (30) sorbitol tetraoleate, POE (40) sorbitol tetraoleate, and POE (60) sorbitol tetraoleate.

[0062] Specific examples of POE hydrogenated castor oil include POE (5) hydrogenated castor oil, POE (10) hydrogenated castor oil, POE (20) hydrogenated castor oil, POE (30) hydrogenated castor oil, POE (40) hydrogenated castor oil, POE (50) hydrogenated castor oil, POE (60) hydrogenated castor oil, POE (80) hydrogenated castor oil, and POE (100) hydrogenated castor oil.

[0063] Specific examples of POE phytosterols include POE(5) phytosterol, POE(10) phytosterol, POE(20) phytosterol, and POE(30) phytosterol.

[0064] Specific examples of polyethylene glycol fatty acid esters include PEG-9 monolaurate, PEG-10 monolaurate, PEG-6 monostearate, PEG-9 monostearate, PEG-10 monostearate, PEG-23 monostearate, PEG-25 monostearate, PEG-40 monostearate, PEG-45 monostearate, PEG-55 monostearate, PEG-150 distearate, PEG-250 distearate, PEG-8 diisostearate, PEG-5 monooleate, PEG-6 monooleate, PEG-9 monooleate, PEG-10 monooleate, PEG-14 monooleate, and PEG-16 monooleate.

[0065] The weighted average HLB of the nonionic surfactant (E) may be 5 or more, 7.5 or more, 10 or more, 12.5 or more, or 15 or more. The weighted average HLB of the nonionic surfactant (E) contained in the cosmetic may be 20 or more, 18 or less, 16 or less, 14 or less, 12 or less, or 10 or less.

[0066] As used herein, the hydrophilic lipophilic balance (HLB) is defined as: (1) Using the Griffin method, the following equation: HLB = 20 × [(molecular weight of hydrophilic group contained in surfactant) / (molecular weight of surfactant)] The value calculated from (2) Using the Atlas method, the following equation: HLB = 20 × (1 - (saponification value) / (neutralization value of fatty acid in ester)) The value calculated from (3) The following formula according to the organic conceptual diagram: HLB=(ΣInorganic value / ΣOrganic)×10 Here, Σinorganic value / Σorganic value is the IOB (Inorganic-Organic Balance) (see Yoshio Koda, "Organic Conceptual Diagram - Fundamentals and Applications", pp. 11-17, Sankyo Publishing, 1984). (4) The value described in Reference 1 (Surfactant Handbook, 3rd Edition, May 1, 1998), or (5) The value may be the value described in Reference 2 (The HLB SYSTEM, July 1989, ICI Americas Inc.). For polyoxyalkylene alkyl ether surfactants, the HLB value may be determined by the Griffin method. For polyglycerol fatty acid esters, the HLB value may be determined by the Atlas method. If the above methods cannot be used for calculation, the HLB value may be determined from an organic conceptual diagram, or the values ​​described in Reference 1 (or Reference 2) may be used. For example, if the HLB value is not described in Reference 1, the values ​​described in Reference 2 may be used. In a mixed system containing two or more types of nonionic surfactants, the HLB value of the mixed system can be calculated as a weighted average of the HLB values ​​of the individual emulsifiers.

[0067] [Amount of nonionic surfactant (E)] The amount of nonionic surfactant (E) in the cosmetic may be 3% or more, 5% or more, 8% or more, 10% or more, 12% or more, 14% or less, 16% or more, 18% or more, 20% or more, 23% or more, or 25% or more, preferably 3% or more, more preferably 8% or more, and even more preferably 10% or more, and may be 50% or less, 45% or less, 40% or less, 35% or less, 30% or less, 25% or less, 22% or less, 18% or less, 16% or less, 14% or less, 10% or less, 8% or less, 6% or less, or 4% or less, preferably 15% or less, more preferably 12% or less. When the amount of nonionic surfactant (E) is 3% or more, shape retention during application can be improved. Furthermore, when the content of nonionic surfactant (E) is 15% or less, application to the skin can be improved.

[0068] <Other ingredients> In addition to the above-mentioned components, the solid cosmetic preparation of the present disclosure may contain, as needed, various other components used in ordinary cosmetics, quasi-drugs, pharmaceuticals, etc., within the scope that does not impair the effects of the present disclosure, such as oily components other than component (B) and component (C), cationic surfactants, anionic surfactants, amphoteric surfactants, silicones, polyhydric alcohols, nonionic polymers, cationic polymers, anionic polymers, amphoteric polymers, moisturizers, thickeners, medicinal ingredients, protein derivatives, hydrolyzed proteins, amino acids, plant extracts, herbal extracts, vitamins, preservatives, antioxidants, anti-inflammatory agents, UV absorbers, colorants, fragrances, etc., and may contain one or more of these, however, the present disclosure is not limited to these examples.

[0069] [Amount of other ingredients] The total amount of other ingredients in a cosmetic may be 0.1% or more, 0.3% or more, 0.5% or more, 1% or more, 1.5% or more, 2% or more, or 3% or more. The total amount of other ingredients in a cosmetic may be 10% or less, 8% or less, 6% or less, 4% or less, 2% or less, 1.5% or less, 1% or less, or 0.5% or less, or may be 0.1% or more, 0.3% or more, 0.5% or more, 1% or more, 1.5% or more, 2% or more, 3% or more, 5% or more, or 7.5% or more. The total amount of other ingredients in a cosmetic may be 20% or less, 15% or less, 10% or less, 8% or less, 6% or less, 4% or less, 2% or less, 1.5% or less, or 1% or less, preferably 10% or less.

[0070] <Uses of cosmetics, etc.> The solid cosmetic preparation according to the present disclosure can be suitably provided as a cosmetic preparation such as lipstick, lip gloss, lip balm, foundation, deodorant, fragrance, sunscreen, hair care, beauty balm, moisturizing base, blush, eye color, or cleanser.

[0071] <Cosmetic containers> The container for the cosmetic product according to the present disclosure is not particularly limited, and examples thereof include a bottle container, a jar container, a tube container, a pump container, an aerosol container, a container with an applicator, a compact container, and a propelling container, with a propelling container being preferred due to its remarkable effects. [Example]

[0072] Hereinafter, the present disclosure will be described in more detail with reference to examples, but the present disclosure is not limited to these examples.

[0073] The evaluation tests described herein were carried out by varying the components and their contents in the water-in-oil solid cosmetic preparations. The units used to indicate the contents of each component are % by mass, and the preparations were made using conventional methods.

[0074] <Filling moldability> In the evaluation test for "filling moldability" shown in this specification, the water-in-oil solid cosmetic was prepared in a conventional manner, melt-filled into a 20 mL capacity oval-shaped dispenser container (manufactured by PRS Company, product name: R-71, material: polypropylene, height: 76 mm, outer diameter: minor axis 18 mm, major axis 31 mm), and cooled to solidify. The appearance of the water-in-oil solid cosmetic was visually inspected and evaluated according to the following evaluation criteria.

[0075] <Evaluation criteria for filling moldability> ○: Good. ×: No solidification and / or water-in-oil mixture formed.

[0076] For samples that were rated "x" in the "filling moldability" above, the following evaluations were not carried out and the sample was rated "-".

[0077] <Shape retention when applied> In the evaluation test for "shape retention upon application" shown in the present specification, a water-in-oil solid cosmetic was prepared in a conventional manner, melt-filled into a 20 mL oval-shaped dispenser container (manufactured by PRS Company, product name: R-71, material: polypropylene, height: 76 mm, outer diameter: minor axis 18 mm, major axis 31 mm), and cooled to solidify. The cosmetic was then applied to the inner upper arm with a constant force a predetermined number of times, and the appearance of the water-in-oil solid cosmetic was visually confirmed and evaluated according to the following evaluation criteria.

[0078] <Evaluation criteria for shape retention when applied> ⊚: No significant change in shape was observed even after more than 100 applications. ○: Change in shape was observed after 100 or fewer applications. △: Change in shape was observed after 50 or fewer applications. ×: Change in shape was observed after 10 or fewer applications.

[0079] <Applicability to skin> In the evaluation test for "applicability to skin" shown in this specification, a water-in-oil solid cosmetic was prepared by a conventional method, melt-filled into a 20 mL oval-shaped dispenser (manufactured by PRS Company, product name: R-71, material: polypropylene, height: 76 mm, outer diameter: minor axis 18 mm, major axis 31 mm), and cooled to solidify. 20 panelists applied the cosmetic to the inside of their upper arms with a constant force a predetermined number of times, and evaluated according to the following evaluation criteria. Note that "good applicability of the agent to skin" below refers to the water-in-oil solid cosmetic spreading well and being easy to apply to the skin.

[0080] <Evaluation criteria for skin application> ◎: 18 to 20 people answered that the product spreads well on the skin. ○: 13 to 17 people answered that the product is easy to apply to the skin. △: 6 to 12 people answered that the product spreads easily on the skin. ×: 5 or fewer people answered that the product spreads well on the skin.

[0081] <Stability over time at high temperatures> In the evaluation test for "temporal stability at high temperatures" shown in this specification, a water-in-oil solid cosmetic was prepared by a conventional method and filled in a 20 mL jar (manufactured by GLASEL, product name: LOOP-20, material: polypropylene, height: 34 mm, outer diameter: φ41.3 mm, inner diameter: φ39.7 mm) at 15 g. The cosmetic was stored at 40 or 50°C, and the appearance was visually inspected and evaluated according to the following evaluation criteria.

[0082] <Evaluation criteria for stability over time at high temperatures> ◎: No change in appearance was observed even after one month or more at 50°C. ○: No change in appearance was observed even after one month or more at 40°C. △: Sweating was confirmed in less than one month under 40°C conditions. ×: Liquefaction was confirmed in less than one month at 40°C.

[0083] In Examples 1 to 8 in Table 1, even when the type and content of the ester (A) of a carboxylic acid and a polyglycerol were changed, water-in-oil solid cosmetic preparations that had no fluidity at 25°C and 1 atmospheric pressure were obtained, as compared to Comparative Examples 1 to 3, and excellent results were obtained in terms of filling moldability, shape retention during application, applicability to the skin, and stability over time at high temperatures.

[0084] [Table 1]

[0085] In Examples 9 to 21 in Table 2, even when the type and content of solid oil (B) was changed, water-in-oil solid cosmetics with no fluidity at 25°C and 1 atmospheric pressure were obtained, as compared to Comparative Examples 4 and 5, and excellent results were obtained in terms of filling moldability, shape retention during application, applicability to the skin, and stability over time at high temperatures.

[0086] [Table 2]

[0087] In Examples 22 to 44 in Table 3, even when the type and content of the liquid oil (C) was changed, water-in-oil solid cosmetic preparations were obtained that had no fluidity at 25°C and 1 atmospheric pressure, as compared to Comparative Examples 6 and 7, and excellent results were obtained in terms of filling moldability, shape retention during application, applicability to the skin, and stability over time at high temperatures.

[0088] [Table 3]

[0089] In Examples 45 to 62 in Table 4, even when the type and content of nonionic surfactant (E) was changed, water-in-oil solid cosmetics with no fluidity at 25°C and 1 atmospheric pressure were obtained, and excellent results were obtained in terms of filling moldability, shape retention during application, applicability to the skin, and stability over time at high temperatures, as compared to Comparative Example 8, which was rated as "×: did not solidify and / or form a water-in-oil type" in the evaluation of filling moldability.

[0090] [Table 4] [Industrial Applicability]

[0091] The present disclosure can provide a water-in-oil solid cosmetic preparation that exhibits excellent shape retention upon application.

Claims

1. A water-in-oil solid cosmetic preparation comprising the following components (A) to (D): (A) An ester of a carboxylic acid and a polyglycerol, wherein the carboxylic acid includes a carboxylic acid having 20 to 24 carbon atoms. (B) Solid oil with a melting point of 50°C or higher and 130°C or lower (C) a liquid oil having a melting point of 25°C or less, and (D) Water

2. 2. The solid cosmetic preparation according to claim 1, wherein the degree of polymerization of the polyglycerin is 8 or more and 12 or less.

3. The solid cosmetic preparation according to claim 1 or 2, wherein the carboxylic acid comprises behenic acid and / or eicosanedioic acid.

4. The solid cosmetic preparation according to claim 1 or 2, wherein the ester (A) is a monoester.

5. 3. The solid cosmetic preparation according to claim 1, wherein the amount of the ester (A) in the cosmetic preparation is 0.5% by mass or more and 10% by mass or less.

6. In the cosmetic, the amount of the solid oil (B) is The solid cosmetic preparation according to claim 1 or 2, wherein the content is 5% by mass or more and 20% by mass or less.

7. 3. The solid cosmetic preparation according to claim 1, wherein the solid oil (B) is a solid oil containing no hydroxyl groups.

8. 3. The solid cosmetic preparation according to claim 1, wherein the solid oil (B) is a hydrocarbon wax.

9. 3. The solid cosmetic preparation according to claim 1, wherein the liquid oil (C) is a liquid ester of a fatty acid and an alcohol.

10. The solid cosmetic preparation according to claim 1 or 2, further comprising (E) a nonionic surfactant.

11. The solid cosmetic preparation according to claim 10, wherein the nonionic surfactant (E) is a polyglycerol fatty acid ester.

12. 11. The solid cosmetic preparation according to claim 10, wherein the weighted average value of the HLB of the nonionic surfactant (E) is 8 or more and 15 or less.

13. In the ester (A), the degree of polymerization of the polyglycerin is 8 or more and 12 or less, and the carboxylic acid contains behenic acid and / or eicosanedioic acid, The solid oil (B) is a hydrocarbon wax, the liquid oil (C) is a liquid ester of a fatty acid and an alcohol, In the cosmetic, the amount of the ester (A) is 0.5% by mass or more and 10% by mass or less, 2. The solid cosmetic preparation according to claim 1, wherein the amount of the solid oil (B) is 5% by mass or more and 20% by mass or less.

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