Solid powder makeup cosmetic composition and method for producing the solid powder makeup cosmetic composition

Abstract

The objective is to provide a solid powder makeup cosmetic composition that exhibits good slurry fluidity and dispersibility, as well as good powder adhesion in molded products, even when water is used as a solvent, and a method for producing the solid powder makeup cosmetic composition. [Solution] A cosmetic composition comprising an oil, a powder, and a nonionic surfactant having an HLB value of 6.0 to 12.5, The aforementioned problem can be solved by a solid powder makeup cosmetic composition in which the oil agent comprises at least one ester oil selected from the group consisting of dimer acid esters and polyhydric esters, and a polyhydric alcohol.

Description

Technical Field

[0001] The present invention relates to a solid powder makeup cosmetic composition and a method for producing the solid powder makeup cosmetic composition.

Background Art

[0002] Generally, there are a dry molding method and a wet molding method for producing solid makeup cosmetics. The dry molding method involves mixing a powder and an oil agent and then performing pressure molding. This production method is simple and widely used. The wet molding method is a method of preparing a cosmetic by adding a solvent to a cosmetic base material containing a powder and an oil agent to form a slurry, filling it into a container, and then removing the solvent. Cosmetics prepared by this molding method are likely to obtain a smooth texture. As the solvent, an organic solvent or water is used.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In recent years, in consideration of the fact that organic solvents are dangerous substances, technologies using water as a solvent have been spreading (Patent Document 1). However, when water is used as a solvent, the fluidity and dispersibility of the slurry may be worse than those using an organic solvent. In addition, regarding the adhesion of the powder in the molded product, it may be inferior to that using an organic solvent. Therefore, there has been a demand for a solid powder makeup cosmetic composition having good slurry fluidity and dispersibility and the adhesion of the powder in the molded product, and a method for producing such a solid powder makeup cosmetic composition.

Means for Solving the Problems

[0005] The inventors diligently researched solid powder makeup cosmetic compositions that exhibit good slurry fluidity and dispersibility, as well as good powder adhesion in molded articles, even when water is used as a solvent, and methods for producing such solid powder makeup cosmetic compositions. Surprisingly, they discovered that by combining a nonionic surfactant having a specific HLB value with a specific oil, it is possible to obtain solid powder makeup cosmetic compositions that exhibit good slurry fluidity and dispersibility, as well as good powder adhesion in molded articles, even when water is used as a solvent, and methods for producing such solid powder makeup cosmetic compositions. This invention is based on these findings. Therefore, the present invention relates to the following: [1] Oils and Powder and, Nonionic surfactants with an HLB value of 6.0 to 12.5, A cosmetic composition comprising, The oil comprises at least one ester oil selected from the group consisting of dimer acid esters and polyhydric esters, and a polyhydric alcohol. A solid powder makeup cosmetic composition containing [the specified ingredient]. [2] The solid powder makeup cosmetic composition according to [1], wherein the nonionic surfactant having an HLB value of 6.0 to 12.5 is at least one selected from fatty acid polyglyceryls, sorbitan fatty acid esters, silicone-based surfactants, and polyethylene glycol fatty acid esters. [3] The solid powder makeup cosmetic composition according to [1] or [2], wherein the ester oil is selected from dimer acid esters, diesters, and triesters, and the polyhydric alcohol is a dihydric to tetrahydric polyhydric alcohol. [4] Oils at 3-40% by weight, Powder 50-95% by weight, Nonionic surfactants with an HLB value of 6.0 to 12.5, 0.1 to 15% by weight, A solid powder makeup cosmetic composition containing, on a basis of the total amount of the composition, The solid powder makeup cosmetic composition according to any one of [1] to [3], wherein the oily agent comprises, on a basis of the total amount of the composition, 1 to 20% by weight of at least one ester oil selected from the group consisting of dimer acid esters and polyhydric esters, and 1 to 30% by weight of a polyhydric alcohol. [5] A solid powder makeup cosmetic composition according to any one of [1] to [4], which is an eyeshadow, eyeliner, eye color, face color, cheek color, eyebrow powder, foundation, bronzer, highlighter, shading powder, lipstick, or concealer. [6] A step of preparing a slurry by mixing an oil, a powder, a nonionic surfactant with an HLB value of 6.0 to 12.5, and water. The process of forming the slurry, The process of drying the molded slurry, A method for producing a solid powder makeup cosmetic composition, comprising: A method for producing the aforementioned oil, wherein the oil comprises at least one ester oil selected from the group consisting of dimer acid esters and polyhydric esters, and a polyhydric alcohol. [7] The manufacturing method according to [6], wherein, in the step of preparing a slurry, powder and oil are mixed, and then water is added as a solvent to the mixture. [8] The manufacturing method according to [6] or [7], wherein the amount of water added is 40 to 180 parts by mass per 100 parts by mass of the total amount of the oil, powder, and nonionic surfactant having an HLB value of 6.0 to 12.5. [9] A method for producing a solid powder makeup cosmetic composition according to any one of [6] to [8], wherein the solid powder makeup cosmetic composition is an eyeshadow, eyeliner, eye color, face color, cheek color, eyebrow powder, foundation, bronzer, highlighter, shading powder, lipstick, or concealer. [Effects of the Invention]

[0006] According to the present invention, it is possible to provide a solid powder makeup cosmetic composition that has good slurry fluidity and dispersibility, as well as good powder adhesion in molded articles, even when water is used as a solvent, and a method for producing such a solid powder makeup cosmetic composition. [Brief explanation of the drawing]

[0007] [Figure 1] This figure shows the manufacturing flow of solid powder eyeshadow in the example. [Modes for carrying out the invention]

[0008] The present invention will be described in detail below. In this specification, unless otherwise specified, the notation "a~b" for numerical values ​​a and b is equivalent to "a or more and b or less". That is, the notation "a~b" includes the numerical values ​​a and b at both ends. If a unit is attached only to numerical value b in such notation, that unit shall also apply to numerical value a.

[0009] 《Oil-based ingredients; component A》 The composition of the present invention comprises one or more oily agents. The oily agent comprises at least one ester oil (component A1) selected from the group consisting of dimer acid esters and polyhydric esters, and a polyhydric alcohol (component A2).

[0010] Dimer acid esters refer to esters of dimer acids obtained by polymerization of two molecules of unsaturated fatty acids. Examples of unsaturated fatty acids include linoleic acid, linolenic acid, and oleic acid. Examples of esters of these dimer acids include higher alcohols such as isopropyl alcohol, cetyl alcohol, oleyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, lauryl alcohol, and linoleyl alcohol; dimer ols, which are obtained by polymerization of two molecules of unsaturated alcohols such as dimer linoleyl alcohol; dimer esters, which can be derived from phytosterols, and castor oil. Specifically, examples of the dimer acid ester include dimeric dilinoleic acid dimeric dilinoleyl bis(behenyl / isostearyl / phytosteryl), dimeric dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl), dimeric dilinoleic acid dimeric dilinoleyl bisstearyl, hydrogenated castor oil of dimeric dilinoleic acid, diisopropyl dilinoleate, and the like.

[0011] Examples of the polyvalent ester include diester, triester, and tetraester. Examples of the diester include diesters of dicarboxylic acids having 3 to 18 carbon atoms, di-fatty acid esters of polyhydric alcohols, and the like. Specific examples include propylene glycol dicaprylate, neopentyl glycol dicaprylate, glycol distearate, propylene glycol diisostearate, glyceryl diisostearate, glyceryl monoisostearate monomyristate, glycerin di-2-heptylundecanoate, di-2-ethylhexyl succinate, diisopropyl sebacate, diisostearyl malate, ethylene glycol di-2-ethylhexanoate, diisobutyl adipate, di-2-heptylundecyl adipate, di-2-ethylhexyl sebacate, and the like.

[0012] Examples of the triester include tri-fatty acid esters of polyhydric alcohols having 3 or more valences. Specifically, they include glycerin trimyristate, glycerin triisopalmitate, glycerin tri-2-heptylundecanoate, trimethylolpropane triethylhexanoate, trimethylolpropane trioctanoate, glyceryl tri(caprylate / caprate), glycerin trioleate, glycerin tri-2-ethylhexanoate, triethylhexanone, glyceryl triisostearate, olive oil, jojoba oil, and the like.

[0013] [[ID=Examples of tetraesters include tetra fatty acid esters of polyhydric alcohols with tetrahydric or higher hydric activity. Specifically, these include tetra(behenic acid / benzoic acid / ethylhexanoic acid) pentaerythritol, tetraethylhexanoate pentaerythritol, tetraoctanoate pentaerythritol, and tetra-2-ethylhexanoate pentaerythritol.

[0014] The content of component A1 can be, for example, 1-20% by weight, 2-18% by weight, or 3-10% by weight, based on the total amount of the composition. The content of component A1 can be, for example, 20-80% by weight, 25-70% by weight, or 30-60% by weight according to the oil standard.

[0015] The polyhydric alcohol is not particularly limited as long as the effects of the present invention can be obtained, but examples include ethylene glycol, diethylene glycol, triethylene glycol, trimethylene glycol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,7-heptanediol, 1,8-octanediol, 1,9-nonanediol, 1,11-undecanediol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, glycerin, diglycerin, polyglycerin, 3-methyl-1,3-butanediol, 1,3-butylene glycol, 1,2-octanediol, 1,2-decanediol, 1,2-dodecanediol, 1,2-pentanediol, 1,2-hexanediol, and caprylyl glycol. The polyhydric alcohol is preferably a dihydric to tetrahydric polyhydric alcohol, more preferably glycerin, diglycerin, or 1,3-butylene glycol, and even more preferably glycerin or diglycerin.

[0016] The content of component A2 can be, for example, 1-30% by weight, 2-25% by weight, 3-20% by weight, or 5-15% by weight, based on the total amount of the composition. The content of component A2 can be, for example, 20-90% by weight, 30-80% by weight, or 40-70% by weight according to the oil standard.

[0017] The mass ratio of the content of component A1 to the content of component A2 on a total composition basis (content of component A1 / content of component A2) can be, for example, 0.1 to 10, 0.2 to 8, or 0.3 to 5. The content of component A2 on a total composition basis may be greater than or less than the content of component A1 on a total composition basis. Dimer acid esters, polyhydric esters, and polyhydric alcohols can be liquid, paste-like, or solid at 25°C, respectively.

[0018] In the composition of the present invention, the content of component A can be, for example, 3 to 40% by weight, 5 to 35% by weight, 8 to 30% by weight, or 10 to 25% by weight, based on the total amount of the composition. Component A may contain oily components other than components A1 and A2, as long as it does not impair the effects of the present invention. Examples of oily components other than components A1 and A2 include hydrocarbon oils, monoesters, ether oils, silicone oils, and the like.

[0019] More specifically, examples of hydrocarbon oils include straight-chain or branched-chain hydrocarbon oils such as squalane, liquid paraffin, liquid isoparaffin, light isoparaffin, polybutene, hydrogenated polyisobutene, hydrogenated polydecene, and petrolatum.

[0020] Examples of monoester oils include cetyl 2-ethylhexanoate, cetyl octanoate, isononyl isononanoate, isotridecyl isononanoate, hexyl laurate, isopropyl myristate, octyldodecyl myristate, myristyl myristate, 2-hexyldecyl myristate, isopropyl palmitate, octyl palmitate, 2-hexyldecyl butyl palmitate, isocetyl stearate, isocetyl stearate, isocetyl isostearate, decyl oleate, isodecyl benzoate, octyl methoxycinnamate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, 2-ethylhexyl succinate, 2-hexyldecyl adipate, and alkyl benzoates (C12-C15).

[0021] Examples of ether oils include dialkyl ethers, specifically dihexyl ether, dicaprylyl ether, and cetyl-1,3-dimethylbutyl ether.

[0022] Examples of silicone oils include methylphenylpolysiloxane, methyl trimethicone, dimethylcyclopolysiloxane, and methylphenylpolysiloxane such as diphenylsiloxyphenyl trimethicone. Examples of volatile silicone oils include linear dimethylpolysiloxanes such as dimethylpolysiloxane (1 cs), dimethylpolysiloxane (1.5 cs), and dimethylpolysiloxane (2 cs); branched siloxanes such as methyl trimethicone, tris(trimethylsilyl)methylsilane, and tetrakis(trimethylsilyl)silane; and cyclic dimethylsiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.

[0023] Component A may contain oily components other than components A1 and A2, but their content may be, for example, 50% by weight or less, 40% by weight or less, 30% by weight or less, 20% by weight or less, 10% by weight or less, 5% by weight or less, 1% by weight or less, or 0% by weight, according to the oil standard.

[0024] Components A1 and A2 can each be formulated as one or more components. The aforementioned content of components A1 and A2 refers to the total amount of the components corresponding to each component.

[0025] 《Powder; Component B》 The composition of the present invention comprises one or more powders. The powders are not limited as long as they are used in the art and do not impair the effects of the present invention. Such powders include inorganic powders (e.g., mica, talc, kaolin, sericite, iron oxide, titanium oxide, zinc oxide, iron titanate, aluminum hydroxide, aluminum oxide, hectorite, bentonite, smectite, montmorillonite, vermiculite, magnesium carbonate, calcium carbonate, silica, diatomaceous earth, magnesium silicate, calcium silicate, aluminum silicate, barium silicate, strontium silicate, sodium silicate, barium sulfate, metal tungstate, anhydrous silicic acid, hydroxyapatite, zeolite, boron nitride, manganese violet, cobalt violet, chromium oxide, water Examples include chromium oxide, cobalt titanate, ultramarine, cone, aluminum powder, copper powder, etc., or organic powders (e.g., polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene powder, styrene-acrylic acid copolymer resin powder, benzoguanamine resin powder, cellulose powder, organic pigments (e.g., Red 2, Blue 1, Blue 2, Red 3, Red 102, Red 104, Red 202, Red 226, Yellow 3, Yellow 4, Yellow 5, Orange 201, Green 201, chlorophyll, β-carotene, carmine, gardenia yellow, etc.), zirconium, barium, or aluminum lake, etc.). The powders may or may not have surface treatment. The composition of the present invention preferably contains a pearlescent agent as a powder. The inclusion of a pearlescent agent improves the adhesion of the powder and results in a vivid appearance. Examples of pearlescent agents include phlogopite, titanium mica, iron oxide-coated mica, iron oxide-coated titanium mica, carmine-coated titanium mica, Prussian blue-coated titanium mica, titanium oxide-coated synthetic phlogopite, iron oxide-titanium oxide-coated synthetic phlogopite, titanium oxide-coated glass flakes, titanium oxide-coated alumina flakes, titanium oxide-coated silica flakes, silica-coated aluminum, iron oxide-silica-coated aluminum, silica-coated iron, synthetic fluorophlogopite (synthetic phlogopite), borosilicate (Ca / Al), borosilicate (Na / Al), and borosilicate (Ba / Si).

[0026] In the composition of the present invention, the content of component B can be, for example, 50-95% by weight, 55-90% by weight, 60-85% by weight, or 70-85% by weight, based on the total amount of the composition. The powder content is preferably greater than the oil content. In the composition of the present invention, the content of the pearl agent can be, for example, 1 to 50% by weight, 5 to 45% by weight, 8 to 40% by weight, or 10 to 35% by weight, based on the total amount of the composition.

[0027] Nonionic surfactant with an HLB value of 6.0-12.5; component C. The composition of the present invention contains one or more nonionic surfactants having an HLB value of 6.0 to 12.5. In the composition of the present invention, nonionic surfactants commonly used in the field can be used as long as their HLB value is between 6.0 and 12.5. If the HLB value is listed in the raw material manufacturer's catalog, the catalog value may be used. If it is not listed, it can be calculated by referring to the "New Cosmetics Handbook" published by Nikko Chemicals Co., Ltd. (October 30, 2006).

[0028] The HLB value of component C is 6.0 to 12.5, preferably 6.5 to 12.0, more preferably 7.0 to 11.5, even more preferably 7.5 to 11.0, even more preferably 8.0 to 10.5, even more preferably 8.0 to 10.0, even more preferably 8.0 to 9.5, and most preferably 8.0 to 9.0.

[0029] Component C is not particularly limited, but can include fatty acid polyglyceryls, sorbitan fatty acid esters, silicone-based surfactants, fatty acid polyethylene glycols, and polyoxyethylene alkyl ethers. It is preferable to use at least one selected from the group consisting of fatty acid polyglyceryls, sorbitan fatty acid esters, silicone-based surfactants, and fatty acid polyethylene glycols.

[0030] When using fatty acid polyglyceryl as component C, the average degree of polymerization of polyglycerin is preferably 3 to 9. The fatty acid portion is preferably a fatty acid with 12 to 24 carbon atoms, more preferably a fatty acid with 12 to 20 carbon atoms, even more preferably a fatty acid with 16 to 20 carbon atoms, and most preferably a fatty acid with 18 carbon atoms. Furthermore, the fatty acid residues constituting the fatty acid polyglyceryl may be either linear or branched, and may be either saturated or unsaturated.

[0031] When using fatty acid polyglyceryl as component C, you can use polyglyceryl-4 myristate, polyglyceryl-6 myristate, polyglyceryl-4 oleate, polyglyceryl-6 oleate, polyglyceryl-4 stearate, polyglyceryl-6 stearate, polyglyceryl-4 isostearate, polyglyceryl-6 isostearate, polyglyceryl-4 oleate, polyglyceryl-6 oleate, polyglyceryl-6 ricinoleate, polyglyceryl-4 linoleate, polyglyceryl-6 linoleate, etc.

[0032] When using sorbitan fatty acid esters as component C, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquistearate, sorbitan monolaurate, sorbitan monopalmitate, etc., can be used.

[0033] When using a silicone-based surfactant as component C, polyoxyethylene-methylpolysiloxane copolymer, poly(oxyethylene-oxypropylene)-methylpolysiloxane copolymer, etc., can be used.

[0034] When using fatty acid polyethylene glycol as component C, the number of moles of ethylene oxide added is not limited as long as the effects of the present invention are obtained, but can be, for example, 2 to 40, 2 to 30, 2 to 20, 2 to 10, or 2 to 5.

[0035] When using polyethylene glycol as component C, mono-fatty acid polyethylene glycols such as polyethylene glycol monolaurate (PEG-4 laurate, etc.), polyethylene glycol monostearate (PEG-10 stearate, etc.), polyethylene glycol monoisostearate (PEG-6 isostearate, etc.), polyethylene glycol monooleate (PEG-10 isostearate, etc.), or di-fatty acid polyethylene glycols such as polyethylene glycol dilaurate (PEG-20 dilaurate, etc.), polyethylene glycol diisostearate (PEG-12 diisostearate, etc.), polyethylene glycol dioleate (PEG-8 dioleate, etc.) can be used.

[0036] When polyoxyethylene alkyl ether is used as component C, the number of moles of ethylene oxide added is not limited as long as the effects of the present invention are obtained, but can be, for example, 2 to 40, 2 to 30, 2 to 20, 2 to 10, or 2 to 5.

[0037] When using polyoxyethylene alkyl ether as component C, polyoxyethylene lauryl ether (such as laureth-2 and laureth-3), polyoxyethylene stearyl ether (such as steareth-2 and steareth-3), etc., can be used.

[0038] In the composition of the present invention, the content of component C can be, for example, 0.1 to 15% by weight, 0.5 to 12% by weight, 1 to 10% by weight, or 2 to 8% by weight, based on the total amount of the composition.

[0039] In the composition of the present invention, surfactants other than component C, such as cationic surfactants, amphoteric surfactants, or anionic surfactants, may be incorporated within a range that does not impair the effects of the present invention.

[0040] 《Optional ingredients》 The composition of the present invention may further contain ingredients commonly used in cosmetics, such as fragrances and preservatives. The composition of the present invention may contain water, but from the viewpoint of preventing bacterial growth, its content is preferably 2.0% or less, more preferably 1.5% or less, and even more preferably 1.0% or less, based on the total amount of the composition.

[0041] The makeup cosmetic composition of the present invention is in the form of a solid powder, preferably a solid powder in which the powder is compressed by an oily component. Specifically, the composition of the present invention can be a makeup cosmetic such as eyeshadow, eyeliner, eye color, face color, cheek color, eyebrow powder, foundation, bronzer, highlighter, shading powder, lipstick, or concealer, and is preferably an eyeshadow.

[0042] Method for producing solid powder makeup cosmetic composition The present invention provides a method for producing a solid powder makeup cosmetic composition comprising the steps of: preparing a slurry by mixing an oil, a powder, a nonionic surfactant having an HLB value of 6.0 to 12.5, and water (hereinafter sometimes referred to as the slurry preparation step); The process of forming the slurry (hereinafter sometimes referred to as the forming process), The process involves drying the molded slurry (hereinafter sometimes referred to as the drying process), The oil comprises at least one ester oil selected from the group consisting of dimer acid esters and polyhydric esters, and a polyhydric alcohol.

[0043] Slurry preparation process In the slurry preparation step, a slurry is prepared by mixing an oil containing at least one ester oil selected from the group consisting of dimer acid esters and polyhydric esters, a polyhydric alcohol, a powder, a nonionic surfactant with an HLB value of 6.0 to 12.5, and water. The order in which the raw materials are mixed is not limited as long as the effects of the present invention are obtained, but it is preferable to mix the powder and the oil first, and then add water as a solvent to the mixture. Specifically, it is more preferable to mix the raw materials in the following order. First, the powders other than the pearl agent, the oily components other than the polyhydric alcohol, and the surfactant are mixed to obtain the first mixture. A slurry is prepared by adding a pearl agent, a polyhydric alcohol, and water as a solvent to the first mixture. Furthermore, "after mixing the powder and the oil, water as a solvent is added to the mixture" means that at least one type of powder and at least one type of oil are mixed, and then water as a solvent is added to the mixture. It does not mean that all types of powders and all types of oils contained are mixed, and then water as a solvent is added to the mixture. For example, in the manufacturing method of the present invention, component A1 and a specific powder may be mixed, water may be added to the mixture, and then component A2 and a powder different from the specific powder may be added further.

[0044] The amount of water added is preferably 40 to 180 parts by mass, more preferably 40 to 150 parts by mass, even more preferably 40 to 120 parts by mass, even more preferably 40 to 100 parts by mass, and most preferably 40 to 80 parts by mass, based on 100 parts by mass of the total amount of the oil, powder, and nonionic surfactant with an HLB value of 6.0 to 12.5. The lower limit may be 50.

[0045] In conventional wet manufacturing methods for solid powder makeup cosmetic compositions using water as a solvent, a premix was prepared by mixing water, an oil, and a surfactant, and then powders were added to this premix to form a slurry. However, preparing a water-in-oil emulsion beforehand and then adding the powder to prepare the slurry makes the procedure complicated, and the solvent is difficult to remove because it is in emulsion form. Therefore, if compression or drying is performed until the solvent is removed, necessary oily components that should be contained in the final product may be lost. Also, if the slurry is prepared with a large amount of water, there is a risk of bacterial growth if a large amount of water remains in the molded product. In the present invention, it is not necessary to prepare such a premix, and the amount of water used as a solvent can be reduced, thereby simplifying the process.

[0046] The present invention may optionally include a step of grinding the powder or a low-speed pre-mixing step. An atomizer or the like can be used for grinding. Mixing can be performed using a kneader, a universal agitator or the like.

[0047] 《Molding process》 In the process of molding the prepared slurry, for example, the slurry can be degassed, filled into a predetermined container, and then compressed and molded by suction compression molding or the like. Examples of predetermined containers include metal trays, resin trays, and other types of inner trays.

[0048] 《Drying process》 The molded slurry can be dried as needed using a dryer or the like. The drying time and temperature can be adjusted as appropriate. [Examples]

[0049] The present invention will be specifically described below with reference to examples, but these examples are not intended to limit the scope of the invention. Unless otherwise specified, % refers to weight %.

[0050] Examples 1-7, Comparative Examples 1-2; Investigation of Nonionic Surfactants In the following examples and comparative examples, eyeshadows were manufactured using the component compositions shown in Table 4, following the flow chart shown in Figure 1. A mixture of tactile powders other than pearlescent agents, colorants, and preservatives was mixed and ground in a Hensil atomizer. To this mixture, oils other than polyhydric alcohols and a nonionic surfactant were added, mixed, and ground to prepare the first mixture. A pearl agent and a polyhydric alcohol were added to the first mixture, and then water was added as a solvent. The mixture was dispersed using a universal stirrer to prepare a slurry. The slurry was then molded using a filling machine and dried in a dryer at 60-90°C to remove moisture. During the process, the fluidity and dispersibility of the slurry were evaluated. Furthermore, the adhesion of the powder to the molded product after drying was evaluated. The evaluation method and criteria are as follows. A manufacturing method or product with no "X" marks was considered acceptable.

[0051] • Slurry state (fluidity) Evaluation method: The slurry was visually evaluated to see if it moved when the container was tilted. Evaluation Criteria ○ Moves smoothly with just a 45° tilt. △ It moves when tilted 90°. × It doesn't move even when tilted 90°. • Slurry state (dispersibility) Evaluation method: The containers containing the slurry were visually inspected to confirm whether the components in the slurry were dispersed. Evaluation Criteria ○ The entire mixture is a uniform slurry. △ Some areas are uneven. × The overall appearance is uneven. • The adhesion of the powder Evaluation method: When applied to the forearm, the degree of adhesion to the skin was visually checked. Evaluation Criteria ○ The entire thing fits snugly against the forearm. △ Some areas are unevenly distributed on the forearm. × Does not adhere at all

[0052] The names, properties, and types of the raw materials used are as follows: ·powder [Table 1]

[0053] • Oils [Table 2]

[0054] Nonionic surfactants [Table 3]

[0055] The evaluation results are shown below. Note that the tocopherol in "Polyglyceryl Monooleate, Tocopherol" and the natural vitamin E in "Polyglyceryl Monooleate, Natural Vitamin E" are present in trace amounts and are not expected to affect the evaluation results. Furthermore, "glass powder, red iron oxide," "synthetic fluorphlogopite, titanium dioxide, 'tin oxide'," and "glass powder, titanium dioxide, 'tin oxide'" each qualify as pearlescent agents, and the listed amounts represent the total amounts.

[0056] [Table 4]

[0057] Examples 1-7, which included all of components A1, A2, B, and C, demonstrated good slurry fluidity and dispersibility, as well as good powder adhesion. In Comparative Example 1, where a nonionic surfactant with an HLB value of 5.5 was used instead of component C, the fluidity of the slurry deteriorated. In Comparative Example 1, where a nonionic surfactant with an HLB value of 12.9 was used instead of component C, the dispersibility of the slurry deteriorated. Therefore, it was found that using a nonionic surfactant with an HLB value of 6.0 to 12.5 resulted in good slurry fluidity and dispersibility, as well as good powder adhesion.

[0058] Examples 8-12, Comparative Examples 3-5; Examination of Oils In the following examples and comparative examples, eyeshadows were manufactured using the component compositions shown in Table 5, following the flow chart in Figure 1. The preparation and evaluation methods were the same as those for Examples 1-7 and Comparative Examples 1-2. In these examples and comparative examples, the focus was primarily on the oil components.

[0059] [Table 5]

[0060] Examples 8-12, which contained all of components A1, A2, B, and C, showed good slurry fluidity and dispersibility, as well as good powder adhesion. In Comparative Example 3, where cetyl 2-ethylhexanoate, a monoester, was used instead of component A1, the dispersibility of the slurry deteriorated. In Comparative Examples 4 and 5, where component A2 was not added, the adhesion of the powder or the dispersibility of the slurry deteriorated.

[0061] 《Example 13, Comparative Examples 6-7; Examination of Oils》 In the following examples and comparative examples, eyeshadows were manufactured using the component compositions shown in Table 6, following the flow chart in Figure 1, and further investigations of the oils were conducted.

[0062] [Table 6]

[0063] In Comparative Examples 6 and 7, where a hydrocarbon-based oil, light isoparaffin, and a silicone-based oil, methylpolysiloxane, were used instead of component A1, the dispersibility of the slurry or the adhesion of the powder deteriorated. In Example 13, where 1,3-butylene glycol was used as component A2, the dispersibility of the slurry or the adhesion of the powder deteriorated slightly, but it was evaluated as acceptable for the product. Therefore, it was found that using at least one ester oil selected from the group consisting of dimer acid esters and polyhydric esters, along with a polyhydric alcohol, resulted in good slurry fluidity and dispersibility, as well as good powder adhesion.

[0064] Example 14: Examination of the effects of omitting pearlescent agents and reducing water usage. In the following examples, eyeshadow was manufactured using the component composition shown in Table 7, following the flow shown in Figure 1. In these examples, no pearlescent agent was included, and the amount of water used was reduced.

[0065] [Table 7]

[0066] Even without using a pearl agent and with reduced water usage, Example 14 demonstrated good slurry fluidity and dispersibility, as well as good powder adhesion. [Industrial applicability]

[0067] According to the present invention, it is possible to provide a solid powder makeup cosmetic composition that has good slurry fluidity and dispersibility, as well as good powder adhesion in molded articles, even when water is used as a solvent, and a method for producing the solid powder makeup cosmetic composition.

Claims

1. Oils and Powder and, Nonionic surfactants with an HLB value of 6.0 to 12.5, A cosmetic composition comprising, The oily agent comprises at least one ester oil selected from the group consisting of dimer acid esters and polyhydric esters, and a polyhydric alcohol. A solid powder makeup cosmetic composition containing [the specified ingredient].

2. The solid powder makeup cosmetic composition according to claim 1, wherein the nonionic surfactant having an HLB value of 6.0 to 12.5 is at least one selected from fatty acid polyglyceryls, sorbitan fatty acid esters, silicone-based surfactants, and polyethylene glycol fatty acid esters.

3. The solid powder makeup cosmetic composition according to claim 1 or 2, wherein the ester oil is selected from dimer acid esters, diesters, and triesters, and the polyhydric alcohol is a dihydric to tetrahydric polyhydric alcohol.

4. 3-40% by weight of oil, Powder 50-95% by weight, 0.1 to 15% by weight of a nonionic surfactant with an HLB value of 6.0 to 12.5, A solid powder makeup cosmetic composition containing, on a basis of the total amount of the composition, The solid powder makeup cosmetic composition according to claim 1 or 2, wherein the oily agent comprises, on a basis of the total amount of the composition, 1 to 20% by weight of at least one ester oil selected from the group consisting of dimer acid esters and polyhydric esters, and 1 to 30% by weight of a polyhydric alcohol.

5. A solid powder makeup cosmetic composition according to claim 1 or 2, which is an eyeshadow, eyeliner, eye color, face color, cheek color, eyebrow powder, foundation, bronzer, highlighter, shading powder, lipstick, or concealer.

6. A step of preparing a slurry by mixing an oil, a powder, a nonionic surfactant with an HLB value of 6.0 to 12.5, and water. The process of forming the slurry, The process of drying the molded slurry, A method for producing a solid powder makeup cosmetic composition, comprising: A method for producing the aforementioned oil, comprising at least one ester oil selected from the group consisting of dimer acid esters and polyhydric esters, and a polyhydric alcohol.

7. The manufacturing method according to claim 6, wherein, in the step of preparing a slurry, powder and oil are mixed, and then water is added as a solvent to the mixture.

8. The manufacturing method according to claim 6 or 7, wherein the amount of water added is 40 to 180 parts by mass per 100 parts by mass of the total amount of the oil, powder, and nonionic surfactant having an HLB value of 6.0 to 12.

5.

9. The manufacturing method according to claim 6 or 7, wherein the solid powder makeup cosmetic composition is an eyeshadow, eyeliner, eye color, face color, cheek color, eyebrow powder, foundation, bronzer, highlighter, shading powder, lipstick, or concealer.

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