JP2010132592A - Powdery cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a powdery cosmetic having good collapsibility and excellent adhesion. <P>SOLUTION: The powdery cosmetic contains 30-100 mass% composite powder (A) obtained by mixing a powder (a) with an oil agent (b) in supercritical or subcritical carbon dioxide, 0-69.65 mass% powder (B) other than the component (A), and 0-29.5 mass% oil agent (C) and the mass ratio of (a) to (b) is 99.5:0.5 to 70:30, and the powdery component is 70-99.5 mass% and the oil agent component is 0.5-30 mass% in the entire powdery cosmetic composition. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a powder cosmetic.

  Powder cosmetics are powders or loose ones that have fluidity without pressing the powder, including makeup cosmetics such as foundations, white powders, cheeks, eye shadows, and baby powders. Such body powder is also included. These powder cosmetics are generally mainly plate-like powders such as natural mica, synthetic mica, and talc, and appropriately blend components such as pigments, spherical powders, and pearl agents according to the type of cosmetic. Manufactured.

  Powdered cosmetics are required to be smooth and smooth when applied, to adhere to the skin, to be free of dust and not to be powdery. However, conventionally, the powder component and the oil component as a binder were mixed using a stirring mixer such as a Henschel mixer, Nauter mixer, ribbon blender, kneader, etc., and pulverized with a pulverizer. There was a problem like this. That is, in the conventional mixing method of a powder component and an oily component as a binder, the oily component is only non-uniformly adhered to the surface of the powder component, and the powder and the oil not wetted with the oil are wetted. There is a problem that powder is present, the adhesion to the skin is partially weak, the powder is finished, and the powder is easily scattered during use.

Usually, in order to improve the adhesion to the skin, blending amorphous powder and plate powder such as talc, mica, zinc stearate, etc., but sufficient adhesion is obtained with conventional manufacturing methods That was difficult (for example, Non-Patent Document 1). Patent Document 1 discloses a technique for improving adhesion to skin using an alkenyl succinate ester of starch or a salt thereof and a spherical powder. However, in the conventional production method, adhesion and The effect of preventing dust scattering was not sufficient.
Edited by Takeo Mitsui, “New Cosmetics”, Nanzan-do Co., Ltd., January 12, 1993, p. 291, p. 382 JP 2000-63228 A

  It is an object of the present invention to provide a powder cosmetic that is rich in fluidity and has an oil agent uniformly present throughout the powder, and thus has excellent adhesion, is not powdery, and has little dust scattering.

  The present inventors can use a composite powder obtained by mixing powder and oil in supercritical carbon dioxide or subcritical carbon dioxide, so that the oil is finely dispersed and adhered to the entire powder. Therefore, the present inventors have found that a powder cosmetic can be obtained in which the composite powder has excellent adhesion, is not powdery, and has little dust scattering.

The present invention is a powder cosmetic,
(A): 30 to 100% by mass of a composite powder obtained by mixing (a) powder and (b) oil in supercritical or subcritical carbon dioxide,
(B): Powder other than component (A) 0 to 69.65% by mass,
(C): Oil agent 0 to 29.5% by mass
The mass ratio of (a) and (b) is 99.5: 0.5 to 70:30, and the powder component is 70 to 99.5% by mass in the total composition of the powder cosmetic, A powder cosmetic containing 0.5 to 30% by mass of an oil component is provided.

  Since the powder cosmetics of the present invention have good disintegration properties, a moist feeling and smoothness can be obtained at the time of application, the fluidity is good, and the touch is light and light. Furthermore, it has excellent adhesion, does not scatter during application, is not powdery, has a pearly or glossy finish, and has a long lasting makeup.

[Component (A) Composite Powder]
The composite powder of component (A) is obtained by mixing (a) powder and (b) oil in supercritical or subcritical carbon dioxide.
The (a) powder used in the composite powder of the component (A) is not particularly limited as long as it is an extender pigment or a color pigment usually used in cosmetics, and is an inorganic powder that does not substantially dissolve in supercritical carbon dioxide. Any of organic powders, organic-inorganic composites, and fibrous powders can be used.

  Examples of the inorganic powder include silica, mica, talc, kaolin, sericite, titanium oxide, zinc oxide, fine particle titanium oxide, fine particle zinc oxide, magnesium oxide, zirconium oxide, calcium carbonate, magnesium carbonate, magnesium silicate, anhydrous Examples of silicic acid, barium sulfate, bengara, yellow iron oxide, black iron oxide, carbon black, manganese violet, glass beads, zeolite, and pearl pigment include bengara-coated mica, titanium oxide-coated mica, and composites thereof.

Examples of the organic powder include organic powders composed of organic pigments, polymer compounds, and the like.
Examples of the organic pigment include red 201, red 202, red 204, red 226, orange 204, yellow 205, red 404, red 405, orange 401, yellow 401, and blue 404. Etc. The polymer compound is selected from, for example, thermoplastic resins such as styrene resin, acrylic resin, polyolefin, silicone resin, fluororesin, polyester, and polyamide, and thermosetting resins such as epoxy resin, phenol resin, and urethane resin. Organic polymer powder, further finely divided fiber ("Microart" (Unitika) 20 denier equivalent); "NFCB-10D-0.5T" (Daito Kasei Kogyo) 10 Denier, 0.5 mm, irregular cross section, carbon black dyed black, etc.).

  The average particle diameter of the powder is not particularly limited, but is 0.01 to 500 μm, particularly 0.02 to 100 μm, and more preferably 0.03 to 50 μm. It is preferable from the point.

As these powders, powders that are inherently hydrophilic in surface, those that are hydrophobic, and those in which a part or all of the surface of the powder is hydrophilized or hydrophobized can be used. Among these, hydrophobic or hydrophobized powder is preferable because it is superior in use feeling and makeup sustainability. Hydrophobing treatment can be performed by, for example, silicone compounds (silicone oils such as dimethylpolysiloxane and methylhydrogenpolysiloxane and derivatives thereof), fatty acid metal salts, alkylphosphoric acids, alkali metal salts or amine salts of alkylphosphoric acids, N-mono The treatment can be performed using a hydrophobic treatment agent such as a long chain (C8-22 carbon) aliphatic acyl basic amino acid or a fluorine compound having a perfluoroalkyl group, and the treatment can be performed according to a usual method. The hydrophilization treatment can be performed using, for example, a water-soluble polymer such as polyacrylic acid, an inorganic compound such as silica or alumina, and a hydrophilization treatment agent such as a surfactant, and can be processed according to a normal method. . Moreover, it is preferable that the processing amount of the hydrophobizing agent and the hydrophilizing agent to the powder is 0.05 to 20% by mass, particularly 2 to 10% by mass.
In particular, it is preferable to use a powder hydrophobized with silicone oil or a fluorine compound.

  (A) The shape of the powder is not particularly limited and may be any of a plate shape, a spherical shape, an indeterminate shape, etc. However, it is preferable to use a plate-like powder because it has a moist feeling and smoothness. In particular, the (a) powder of the component (A) composite powder is preferably 30 to 100% by mass, more preferably 70 to 100% by mass of the plate-like powder. As such plate-like powder, talc, mica, sericite, boron nitride, barium sulfate, pearl pigment, and the like are preferable. Furthermore, it is preferable to contain 30 to 100% by mass of a pearl pigment (titanium oxide-coated mica, etc.) in the plate-like powder because the finished gloss is excellent.

  In the component (A) composite powder, (a) powder can be contained in one or more kinds, preferably 50% by mass or more, more preferably 80% by mass or more, and 95% by mass or less. However, it is preferable from the viewpoints of adhesion of the powder cosmetic to the skin, a feeling of use at the time of application, and suppression of powderiness.

  The (b) oil used in the composite powder of component (A) can be selected from liquid, solid and semi-solid at 25 ° C. The liquid oil at 25 ° C. can be used without particular limitation as long as it is used in ordinary cosmetics. For example, vegetable oil such as jojoba oil; animal oil such as liquid lanolin; linear or branched hydrocarbon oil such as liquid paraffin, light isoparaffin, liquid isoparaffin, squalane and squalene; ester oil such as fatty acid ester and polyhydric alcohol fatty acid ester; Examples include silicone oils such as dimethylpolysiloxane, dimethylcyclopolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, and higher alcohol-modified organopolysiloxane; fluorine oils such as fluoropolyether and perfluoroalkylethersilicone.

  As the oil agent that is liquid at 25 ° C., it is preferable to use a different kind of oil agent from (a) the hydrophobic or hydrophobic treatment of the powder. For example, when (a) a powder hydrophobized with a silicone compound is used, it is preferable to use hydrocarbon oil, ester oil, ether oil, or fluorine oil as (b) oil. Further, when a powder hydrophobized with fluorine oil is used in (a) powder, it is preferable to use hydrocarbon oil, ester oil, ether oil, or silicone oil. This greatly contributes to the fluidity and adherence of the granulated material constituted by the composite powder of the component (A) described later. (B) The oil agent is particularly preferably a hydrocarbon oil, an ester oil or an ether oil.

  The solid oil agent at 25 ° C. preferably has a melting point of 40 ° C. or higher, more preferably 60 to 110 ° C., and is not particularly limited as long as it is usually used in cosmetics. A basic wax, mineral wax, synthetic wax and the like can be used. Specific examples include rice bran wax, carnauba wax, candelilla wax, beeswax, gay wax, ceresin, paraffin wax, microcrystalline wax, and polyethylene wax.

  Semisolid oils include cholesteryl isostearate, cholesteryl hydroxystearate, macadamia nut oil fatty acid cholesteryl, N-lauroyl-L-glutamate di (cholesteryl behenyl octyldodecyl), N-lauroyl-L-glutamate di (cholesteryl Cholesterol derivatives such as behenyl octyldodecyl), N-lauroyl-L-glutamate di (phytosteryl behenyl 2-octyldodecyl), N-lauroyl-L-glutamate di (phytosteryl-2-octyldodecyl), phytosteryl isostearate Phytosterol derivatives such as phytosteryl oleate, dipentaerythritol fatty acid esters such as dipentaerythritol hexaoxystearate, dipentaerythritol rosinate, (adipic acid, 2-ethyl Examples thereof include triglycerides such as hexanoic acid / stearic acid glyceryl oligoester and tri (capryl / caprin / myristin / stearic acid) glyceride, partially hydrogenated triglycerides such as hydrogenated oil, lanolin, lanosterol derivatives, petrolatum and the like.

In the composite powder of the component (A), (b) the oil agent can be used in one or more kinds, and it is 30% by mass or less, and further 20% by mass or less and 0.5% by mass or more is included. It is preferable in view of good fluidity, adhesion to the skin and moist feeling at the time of application.
(B) When a solid or semi-solid oil agent is used at 25 ° C. as the oil agent, 0.1% by mass or more, further 1% by mass or more and 30% by mass in the composite powder of component (A) In the following, it is preferable to contain 20% by mass or less from the viewpoint of skin adhesion and smoothness of use at the time of application.
In addition, when (b) the oil agent is used in combination with a liquid oil agent at 25 ° C. and a solid or semi-solid oil agent, the mass of the oil agent that is liquid at 25 ° C. and the oil agent that is solid or semi-solid at 25 ° C. The ratio is (liquid oil agent) :( solid and / or semi-solid oil agent) = 10: 1 to 1:10, particularly 2: 1 to 1: 2, which reduces powderiness and skin. It is particularly preferable from the viewpoints of adhesion to the surface and smoothness of use.

  In the composite powder of component (A), the mass ratio of (a) powder and (b) oil agent is 99.5: 0.5 to 70:30, preferably 99.5: 0.5 to 80:20. It is. If it is in this range, it is preferable in terms of providing good fluidity of the powder cosmetic, adhesion to the skin, and moist feeling at the time of application.

In the present invention, the composite powder of component (A) is obtained by mixing (a) powder and (b) oil in supercritical carbon dioxide or subcritical carbon dioxide and stirring.
Carbon dioxide is generally non-toxic and has a critical temperature of 304.15 K and a critical pressure of 7.38 MPa. Supercritical carbon dioxide refers to carbon dioxide having a temperature equal to or higher than the critical temperature (Tc) and equal to or higher than the critical pressure (Pc), and subcritical carbon dioxide is a temperature equal to or higher than the critical temperature of carbon dioxide, or Carbon dioxide whose pressure is above the critical pressure of carbon dioxide. Supercritical carbon dioxide in the vicinity of the critical point has the property that the density changes suddenly by a slight pressure change.

  More specifically, when the pressure and / or temperature of carbon dioxide is increased, the density of carbon dioxide increases rapidly, so that the solubility of the solute in carbon dioxide increases rapidly, and conversely, the pressure and / or temperature of carbon dioxide is increased. When it is decreased, the solubility of the solute in carbon dioxide can be rapidly decreased. Therefore, the solute and carbon dioxide can be easily separated by adjusting the pressure and temperature.

  In supercritical carbon dioxide or subcritical carbon dioxide, the temperature at which (a) the powder and (b) the oil agent are mixed is 304 from the viewpoint of efficiently removing carbon dioxide after mixing and reducing the pressure efficiently. It is preferable that it is .15-373.15K, More preferably, it is 313.15-353.15K. The pressure is preferably 7.2 to 50 MPa, more preferably 10 to 40 MPa. Under this condition, component (b) is uniformly dissolved or dispersed in supercritical carbon dioxide or subcritical carbon dioxide.

  The method for reducing the pressure is not particularly limited. Although the temperature lowers due to the adiabatic expansion action during decompression, the carbon dioxide in the container may be liquefied carbon dioxide or gaseous carbon dioxide by controlling the temperature of the container. Stirring may be performed during decompression. In addition, as long as the oil agent is dissolved or dispersed in carbon dioxide, the state of carbon dioxide at the time of mixing may be gas or liquid, but the temperature is set so that carbon dioxide does not become liquid at the time of mixing and decompression. It is more preferable to adjust the pressure. Thereby, generation | occurrence | production of a capillary phenomenon can be prevented and the fall of the disintegration by partial aggregation of a component (A) composite powder can be prevented.

  More specifically, when creating a phase diagram with pressure on the vertical axis and temperature on the horizontal axis, it must pass below the gas line connecting the critical point of carbon dioxide and the triple point of solid, liquid, and gas. Preferably, for example, from the viewpoint of efficiently performing decompression expansion of carbon dioxide, it is preferably 304.15 to 373.15K, more preferably 304.15 to 353.15K, and still more preferably 313.15 to 333.33. 15K.

  In addition, in the manufacturing method of component (A) composite powder, decompression means reducing the pressure of supercritical carbon dioxide or subcritical carbon dioxide, carbon dioxide in a gaseous state, and carbon dioxide in a liquid state.

  As described above, when using supercritical carbon dioxide or subcritical carbon dioxide, unlike other supercritical fluids, the operation can be performed at a low temperature. Since it is harmless, non-hazardous and inexpensive, there is an advantage that the manufacturing cost can be reduced.

  Powder and oil mixed in supercritical carbon dioxide or subcritical carbon dioxide are opened by an exhaust valve etc. provided in the container, and the pressure in the container is reduced, thereby supercritical carbon dioxide or subcritical carbon dioxide. The oil agent dissolved or dispersed therein is precipitated, and component (A) composite powder is formed.

In supercritical carbon dioxide or subcritical carbon dioxide, (b) the oil dissolves or disperses uniformly, so the solubility in supercritical carbon dioxide or subcritical carbon dioxide can be controlled by adjusting the pressure and temperature. (A) The component (b) can be finely and uniformly dispersed throughout the powder.
The component (A) thus obtained becomes a composite powder in which the component (a) is weakly secondary aggregated via the component (b). This is a particle that is completely different from the composite powder obtained by conventional mixers, blenders, kneaders and other composite powders, and the composite powder obtained by the solvent method. I found out that More specifically, in the component (A), (a) the powder becomes an aggregate like a card house structure through (b). The size of the composite powder varies depending on (a) the type of powder, but when the particle size of (a) powder is 5 to 150 μm, the average particle size is adjusted to 20 to 300 μm.

  When the composite powder obtained by the conventional method is observed microscopically, a large number of rice ball-like secondary aggregates are formed, and each of them forms very hard particles. Furthermore, since the oil agent corresponding to the binder is unevenly present, there are powders that are not wet with the oil agent and powders that are wet with the oil agent. The colors were different and the colors were uneven. Furthermore, the hard secondary agglomerates are difficult to collapse at the time of application, impairing smoothness, and the powder in the part not wetted with the oil agent has a problem that it has low adhesion and falls off after application. However, since the composite powder of component (A) used in the present invention is formed by weak secondary aggregation of a plurality of powders through a finely and uniformly dispersed oil agent, in the powder cosmetic of the present invention, It disintegrates easily due to friction during application, and a very smooth feeling is obtained. Furthermore, in the composite powder of component (A), since the oil agent as a binder is uniformly dispersed finely in the powder, the coating film has adhesion, excellent color development, and almost no color unevenness. A beautiful finish that does not occur. And since there is almost no difference between the color of powder cosmetics and the color at the time of apply | coating to skin, it has the merit that a user can use it in comfort. Furthermore, since there is no powder to which the oil agent is not adhered, there is an advantage that dust scattering during application is extremely reduced.

The composite powder of component (A) thus obtained is preferably filled in a cosmetic container as it is because the performance can be maintained. Furthermore, in order to optimize the formulation, the components (B) and (C) can be added to the composite powder of the component (A).
The composite powder of component (A) is contained in an amount of 30 to 100% by mass, preferably 50 to 100% by mass in the total composition.

[Component (B) powder]
Furthermore, the powder cosmetics of this invention can contain (B) powder other than the composite powder of a component (A). The component (B) powder is used for the purpose of adjusting the feeling of use, adjusting the color tone, and imparting color variations.
The powder is not particularly limited as long as it is an extender pigment or a color pigment usually used in cosmetics, and any of inorganic powder, organic powder, organic-inorganic composite, and fibrous powder can be used. .

  Examples of the inorganic powder include silica, mica, talc, kaolin, sericite, titanium oxide, zinc oxide, fine particle titanium oxide, fine particle zinc oxide, magnesium oxide, zirconium oxide, calcium carbonate, magnesium carbonate, magnesium silicate, anhydrous Examples thereof include silicic acid, barium sulfate, bengara, yellow iron oxide, black iron oxide, carbon black, manganese violet, titanium oxide-coated mica, Bengala-coated mica, glass beads, and a composite of these.

Examples of the organic powder include organic powders composed of organic pigments, polymer compounds, and the like.
Examples of the organic pigment include red 201, red 202, red 204, red 226, orange 204, yellow 205, red 404, red 405, orange 401, yellow 401, and blue 404. Etc. The polymer compound is selected from, for example, thermoplastic resins such as styrene resin, acrylic resin, polyolefin, silicone resin, fluororesin, polyester, and polyamide, and thermosetting resins such as epoxy resin, phenol resin, and urethane resin. Organic polymer powder, further finely divided fiber ("Microart" (manufactured by Unitika) equivalent to 20 denier, "NFCB-10D-0.5T" (manufactured by Daito Kasei Kogyo Co., Ltd., 10 Denier, 0.5 mm, irregular cross-section, carbon black, and the like).

  The average particle diameter of the powder is not particularly limited, but is 0.01 to 500 μm, particularly 0.02 to 100 μm, and more preferably 0.03 to 50 μm. From the point, it is preferable.

These powders can be used as powders that are inherently hydrophilic in surface, hydrophobic, or those in which part or all of the powder is hydrophilized or hydrophobized. Of these, hydrophobic or hydrophobized powders are preferable because they are superior in use feeling and makeup sustainability. Hydrophobing treatment can be performed by, for example, silicone compounds (silicone oils such as dimethylpolysiloxane and methylhydrogenpolysiloxane and derivatives thereof), fatty acid metal salts, alkylphosphoric acids, alkali metal salts or amine salts of alkylphosphoric acids, N-mono The treatment can be performed using a hydrophobic treatment agent such as a long chain (C8-22 carbon) aliphatic acyl basic amino acid or a fluorine compound having a perfluoroalkyl group, and the treatment can be performed according to a usual method. The hydrophilization treatment can be performed using, for example, a water-soluble polymer such as polyacrylic acid, an inorganic compound such as silica or alumina, or a hydrophilization treatment agent such as a surfactant, and can be processed according to a normal method. . Moreover, it is preferable that the processing amount of the hydrophobizing agent and the hydrophilizing agent to the powder is 0.05 to 20% by mass, particularly 2 to 10% by mass.
In particular, it is preferable to use a powder hydrophobized with silicone oil or a fluorine compound.

  Among these, the powder imparting smoothness includes organic plate-like powder composed of water- and oil-insoluble surfactant polyvalent metal salt powder, resin powder, and amino acid powder, and Nε- Lauroyl-L-lysine (Amihope LL, manufactured by Ajinomoto Co., Inc., average particle size: major axis 12 μm, minor axis 10 μm, thickness 0.4 μm) is preferred. Moreover, boron nitride is preferable as the inorganic plate-like powder, and boron nitride-coated silicone elastomer powder is preferable as the organic-inorganic composite powder.

In addition, inorganic spherical powder and organic spherical powder are preferable in order to impart a smooth feeling to the feeling of use. Examples of the spherical powder include inorganic spherical powders such as silica, alumina, titanium oxide, barium sulfate, aluminum hydroxide, calcium carbonate, magnesium silicate, magnesium carbonate, and aluminum silicate; polyamide resin, polyethylene resin, polypropylene resin , Polymethyl methacrylate resin, cellulosic resin, polystyrene resin, copolymer of styrene and acrylic acid, organic spherical powder such as silicone resin, composite powder, extender pigment and colored pigment And the like granulated in a spherical shape. The average particle diameter of the spherical powder is preferably 1 to 15 μm, particularly 3 to 10 μm, since the feeling of use is good.
It is preferable that 30-100 mass% is a spherical powder in the powder of a component (B).

Among these, powders having an average particle size of 3 to 30 μm (laser diffraction type particle size distribution measurement) are preferable. Among them, organopolysiloxane elastomer, polymethylsilsesquioxane, cross-linked silicone / reticulated silicone block copolymer, etc. These silicones are preferred from the viewpoint of smooth elongation spread.
Commercially available products include nylon 12SP-500 (manufactured by Toray Industries, Inc.), Matsumoto Microsphere M-101 and 305 (polymethacrylate), all of which are manufactured by Matsumoto Yushi Seiyaku Co., Ltd., and Gantz Pearl GS, which is polystyrene. -0605 (manufactured by Gantz Kasei), trefil E505, E506, E701 which are organopolysiloxane elastomers (all manufactured by Toray Dow Corning), Tospearl 2000B which is polymethylsilsesquioxane (Momentive Performance Materials) (Made by Japan Godo Co., Ltd.), KSP-100 and 300 (all are Shin-Etsu Chemical Co., Ltd.) which are cross-linked silicone and network type silicone block copolymers.

As the component (B) powder, one or more kinds can be used, and from the viewpoint of improving the feeling in use, the total composition preferably contains 0 to 69.65% by mass, particularly 0 to 10%.
Further, the total powder component ((a) + (B)) is contained in the powder cosmetic composition in an amount of 70 to 99.5% by mass, preferably 80 to 95% by mass.

[Component (C) Oil]
The powder cosmetic of the present invention can contain (C) an oil. As the component (C) oil agent, one or more oil agents selected from liquid, semi-solid and solid at 25 ° C. can be used. A component (C) is contained from a viewpoint of adjustment of a usability | use_condition, adhesive force, and powderiness.
The liquid oil at 25 ° C. can be used without particular limitation as long as it is used in ordinary cosmetics. For example, vegetable oil such as jojoba oil; animal oil such as liquid lanolin; linear or branched hydrocarbon oil such as liquid paraffin, light isoparaffin, liquid isoparaffin, squalane and squalene; ester oil such as fatty acid ester and polyhydric alcohol fatty acid ester; Examples include silicone oils such as dimethylpolysiloxane, dimethylcyclopolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, and higher alcohol-modified organopolysiloxane; fluorine oils such as fluoropolyether and perfluoroalkylethersilicone.

  The solid oil agent at 25 ° C preferably has a melting point of 40 ° C or higher, more preferably 60 to 110 ° C, and is not particularly limited as long as it is usually used in cosmetics. Wax, mineral wax, synthetic wax and the like can be used. Specific examples include rice bran wax, carnauba wax, candelilla wax, beeswax, gay wax, ceresin, paraffin wax, microcrystalline wax, and polyethylene wax.

In addition, cholesteryl isostearate, cholesteryl hydroxystearate, macadamia nut oil fatty acid cholesteryl, N-lauroyl-L-glutamate di (cholesteryl behenyl octyldodecyl), N-lauroyl-L- Cholesterol derivatives such as di (glutesteryl, behenyl, octyldodecyl), N-lauroyl-L-glutamate (phytosteryl, behenyl, 2-octyldodecyl), N-lauroyl-L-di-glutamate (phytosteryl, 2-octyldodecyl) ), Phytosterol derivatives such as phytosteryl isostearate and phytosteryl oleate, dipentaerythritol fatty acid esters such as dipentaerythritol hexaoxystearate and dipentaerythritol rosinate, Acid, 2-ethylhexanoic acid, stearic acid) glyceryl oligoesters, triglycerides such as tri (capryl, caprin, myristic, stearic acid) glycerides, partially hydrogenated triglycerides such as hardened oil, lanolin, lanosterol derivatives, petrolatum Etc.
Among these, liquid isoparaffin and squalane are preferable from the viewpoint of adjusting the feeling of use, adhesion, and powderiness. The oil agent of component (C) can be used regardless of (a) the hydrophobic treatment of the powder.

The oil agent of component (C) can use 1 or more types, and 0-29.5 mass% in the whole composition, especially 0-10 from a viewpoint of reducing powderiness, maintaining a usability | use_condition. It is preferable to contain by mass.
Moreover, the total oil agent component ((b) + (C)) is contained in the powder cosmetic composition in an amount of 0.5 to 30% by mass, preferably 5 to 20% by mass.

  Component (A) composite powder, (B) powder, and (C) oil agent are mixed with a mixer so as to have the blending ratio as described above, and made uniform, and then used as a powder cosmetic. it can.

  The powder cosmetic of the present invention further contains components used in normal cosmetics, such as humectants, UV absorbers, pigments, surfactants, antioxidants, preservatives, vitamins, anti-inflammatory agents, fragrances, etc. These drugs and the like can be appropriately contained. When these components are blended, they can be contained when the composite powder of component (A) is produced, or they are contained when mixing component (A), components (B) and (C). It can also be made.

  The powder cosmetics of the present invention are suitable as makeup cosmetics such as foundations, face powders, white powders, blushers, eye shadows, mascaras, and body powders.

Examples 1 to 17 and Comparative Examples 1 to 7 (powder-like funny)
Powdered white powder having the composition shown in Table 1 and Table 2 was produced by the following production method. About the obtained sensation, disintegration; fluidity; smooth feeling when applied, moist feeling, smoothness, lightness and no dustiness; A soft feeling and no unevenness; The results are shown in Table 3.

(Production method)
(1) Examples 1 to 17:
(1-1) Production of component (A) composite powder;
50 g of each component (a) powder and (b) oil agent were weighed together and filled in an autoclave (internal volume 500 mL, manufactured by AKICO) and sealed. After filling, carbon dioxide is supplied from a cylinder, set to a pressure of 25 MPa and a temperature of 45 ° C., and kept in a supercritical state. Under these temperature and pressure conditions, each component in the autoclave was stirred for 30 minutes at a stirring speed of 250 r / min.
Next, the stirring speed was 100 r / min, the exhaust valve attached to the autoclave was gradually opened, and the pressure was reduced to atmospheric pressure in 10-25 minutes. At this time, the temperature in the container was lowered by the adiabatic expansion action, but the internal temperature was adjusted so as not to pass through the liquid phase of carbon dioxide. Specifically, the temperature in the autoclave at an internal pressure of 7 MPa during decompression was 308 to 318K, and the temperature at the end of decompression was 305 to 318K. After reaching atmospheric pressure, stirring was stopped to obtain a composite powder of component (A).

(1-2) Production of powdered funny;
The composite powder of component (A) obtained by the above production method was passed through a mesh, and then filled in a container to obtain a powdery powder.

(2) Comparative Examples 1-7:
After mixing the powder component with a Henschel mixer, the oil component is added and further mixed. The obtained composite powder was pulverized with an atomizer, passed through a mesh, and then filled into a container to obtain a powdery powder.

(Evaluation methods)
(1) Disintegration:
Remove 1 powder powder with a spatula and place it on the upper arm. It was lightly pressed with the index finger and the number of times until the particles collapsed was determined. The following criteria are shown.
A: Collapsed once.
○: Collapsed 2-3 times.
Δ: Collapsed 4-5 times.
X: No collapse or collapse after 5 times.

(2) Fluidity (ease of mesh):
The cosmetic was filled in a 1 mm mesh container, and when the container was inverted and shaken for 1 minute, the powder that had come out of the container was weighed. The ratio (%) of the powder that flowed out was obtained and used as an index of fluidity. The larger this value, the higher the fluidity.

(3) Smooth feeling during application:
Sensory evaluation of the feel when each cosmetic was applied to the face was conducted by 10 expert panelists. Based on the number of panelists rated as “smooth”, the following criteria were used.
A: 8 to 10 panelists evaluated as “smooth”.
○: 6 to 7 panelists evaluated as “smooth”.
Δ: 4 to 5 panelists evaluated as “smooth”.
×: 0 to 3 panelists evaluated as “smooth”.

(4) Moist feeling during application:
Sensory evaluation of the feel when each cosmetic was applied to the face was conducted by 10 expert panelists. Based on the number of panelists evaluated as “moist”, the following criteria were used.
A: 8 to 10 panelists evaluated as “moist”.
○: 6 to 7 panelists evaluated as “moist”.
Δ: 4 to 5 panelists evaluated as “moist”.
×: 0 to 3 panelists evaluated as “moist”.

(5) Smoothness during application:
Sensory evaluation of the feel when each cosmetic was applied to the face was conducted by 10 expert panelists. Based on the number of panelists evaluated as “smooth”, the following criteria were used.
A: 8 to 10 panelists evaluated as “smooth”.
○: 6 to 7 panelists evaluated as “smooth”.
Δ: 4 to 5 panelists evaluated as “smooth”.
×: 0 to 3 panelists evaluated as “smooth”.

(6) Lightness during application:
Sensory evaluation of the feel when each cosmetic was applied to the face was conducted by 10 expert panelists. Based on the number of panelists evaluated as “light”, the following criteria were used.
A: 8 to 10 panelists evaluated as “light”.
○: 6 to 7 panelists evaluated as “light”.
Δ: 4 to 5 panelists evaluated as “light”.
×: 0 to 3 panelists evaluated as “light”.

(7) No dusting during application:
The state when each cosmetic was applied to the face was subjected to sensory evaluation by 10 expert panelists. Based on the number of panelists evaluated as “light”, the following criteria were used.
A: 8 to 10 panelists evaluated as “not dusting”.
○: 6 to 7 panelists evaluated as “not dusting”.
Δ: 4 to 5 panelists evaluated as “not dusting”.
×: 0 to 3 panelists evaluated as “not dusting”.

(8) Finishing adhesion:
Ten professional panelists evaluated the finish when each cosmetic was applied to the upper arm with a sponge, focusing on how the powder applied to the skin. Based on the number of panelists evaluated as “adhesive”, the following criteria were used.
A: 8 to 10 panelists evaluated as “adhesive”.
○: 6 to 7 panelists evaluated as “adhesive”.
Δ: 4 to 5 panelists evaluated as “adhesive”.
×: 0 to 3 panelists evaluated as “adhesive”.

(9) No powdery finish:
Ten professional panelists performed sensory evaluation of the finish when each cosmetic was applied to the face. Based on the number of panelists evaluated as “not powdery”, the following criteria were used.
A: 8 to 10 panelists evaluated as “not powdery”.
○: 6 to 7 panelists evaluated as “not powdery”.
Δ: 4 to 5 panelists evaluated as “not powdery”.
×: 0 to 3 panelists evaluated as “not powdery”.

(10) Finished gloss:
Ten professional panelists performed sensory evaluation of the finish when each cosmetic was applied to the face. Based on the number of panelists evaluated as “shiny”, the following criteria were used.
◎; 8 to 10 panelists evaluated as “shiny”.
○: 6 to 7 panelists evaluated as “shiny”.
Δ: 4 to 5 panelists evaluated as “shiny”.
×: 0 to 3 panelists evaluated as “shiny”.

(11) Finished pearl feeling:
Ten professional panelists performed sensory evaluation of the finish when each cosmetic was applied to the face. Based on the number of panelists evaluated as “pearly”, the following criteria were used.
A: 8 to 10 panelists evaluated as “pearly”.
○: 6 to 7 panelists evaluated as “pearly”.
Δ: 4 to 5 panelists evaluated as “pearly”.
×: 0 to 3 panelists evaluated as “pearly”.

(12) Soft finish feeling:
Ten professional panelists performed sensory evaluation of the finish when each cosmetic was applied to the face. Based on the number of panelists evaluated as “looks fluffy,” the following criteria were used.
A: 8 to 10 panelists evaluated as “looks soft”.
○: 6 to 7 panelists evaluated as “looks soft”.
Δ: 4 to 5 panelists evaluated as “looks soft”.
×: 0 to 3 panelists evaluated as “looks soft”.

(13) No unevenness in the finish:
Ten professional panelists performed sensory evaluation of the finish when each cosmetic was applied to the face. Based on the number of panelists evaluated as “not uneven”, the following criteria were used.
A: 8 to 10 panelists evaluated as “not uneven”.
○: 6 to 7 panelists evaluated as “not uneven”.
Δ: 4 to 5 panelists evaluated as “not uneven”.
×: 0 to 3 panelists evaluated as “not uneven”.

(14) Makeup:
Ten professional panelists applied each cosmetic to the face and sensory evaluated the finish after 5 hours. Based on the number of panelists evaluated as “good makeup,” the following criteria were used.
A: 8 to 10 panelists evaluated as “good makeup”.
○: 6 to 7 panelists evaluated as “good makeup is good”.
Δ: 4 to 5 panelists evaluated as “good makeup”.
×: 0 to 3 panelists evaluated as “good makeup”.

Examples 18 to 25 and Comparative Examples 8 to 14 (powdered teak)
Powdered teak (loose type) having the composition shown in Table 4 was produced by the following production method. About the obtained cheeks, in the same manner as in Examples 1 to 17, disintegration; fluidity; smooth feeling at application, moist feeling, smoothness, lightness and no dusting; adhesion at finish, powder Poorness, gloss, pearly feeling, softness and no unevenness; In Examples 1 to 17, when the evaluation was performed by applying funny to the face, the evaluation was performed by applying it to the cheek. The results are shown in Table 5.

(Production method)
(1) Example:
The composite powder of component (A) obtained by the above production method was passed through a mesh and then filled into a container to obtain a powdered teak.

(2) Comparative example:
After mixing the powder component with a mixer (Henschel mixer), the oil component is added and further mixed. The obtained composite powder was pulverized with an atomizer, passed through a mesh, and then filled into a container to obtain a powdered teak.

Examples 26-30
Components (B) and (C) were added to the composite powder of component (A) obtained by the above production method, and mixed with a Henschel mixer. The obtained powder was passed through a mesh and then filled into a container to obtain a powdery or powdery cheek.

(Example 26)
By the above method, a powdery powder was obtained. This funnel had adhesiveness, was very smooth and had no uneven color.
(component)
Component (A) composite powder of Example 1 88 (mass%)
(B) Organic spherical powder (KSP-100) 10
(C) Silicone oil (6cs) 2

(Example 27)
By the above method, a powdery powder was obtained. This funnel had good adhesion, very smoothness and high fluidity.
(component)
Component (A) composite powder of Example 3 70 (mass%)
(B) Organic spherical powder (KSP-100) 8
(B) Plastic powder (D800) 17
(C) Squalane 5

(Example 28)
By the above method, a powdery powder was obtained. This funnel had good adhesion, very smoothness and high fluidity.
(component)
Ingredient (A) composite powder of Example 8 50 (mass%)
(B) Boron nitride (particle size 4 μm, manufactured by Mizushima Alloy Iron Company, SHP-4) 45
(C) Squalane 5

  Moreover, when SHP-3 (particle diameter 5 to 7 μm), SHP-5 (particle diameter 14 to 16 μm), and SHP-6 (particle diameter 9 to 11 μm) are used as boron nitride, the same powdered powder is obtained. Obtained.

(Example 29)
Powdered teak was obtained by the above method. This cheek had good adhesion, very smooth and had a reddish vividness.
(component)
Component (A) of Example 20 Composite powder 95 (mass%)
(B) Bengala 5

(Example 30)
Powdered teak was obtained by the above method. This cheek had adhesion, was very smooth and moist.
(component)
Component (A) composite powder of Example 24 95 (% by mass)
(C) Squalane 5

Claims (9)

Powder cosmetics,
(A): 30 to 100% by mass of a composite powder obtained by mixing (a) powder and (b) oil in supercritical or subcritical carbon dioxide,
(B): Powder other than component (A) 0 to 69.65% by mass,
(C): Oil agent 0 to 29.5% by mass
The mass ratio of (a) and (b) is 99.5: 0.5 to 70:30, and the powder component is 70 to 99.5% by mass in the total composition of the powder cosmetic, A powder cosmetic containing 0.5 to 30% by mass of an oil component.   The powder cosmetic according to claim 1, wherein (a) a part or all of the powder is a hydrophobized powder.   The powder cosmetic according to claim 2, wherein the hydrophobized powder is a silicone-treated and / or fluorine-treated powder.   The powder cosmetic according to claim 2 or 3, wherein (b) the oil is a kind of oil different from (a) the hydrophobizing treatment of the powder.   (A) 30-100 mass% is a plate-shaped powder in powder, The powder cosmetics of any one of Claims 1-4.   The powder cosmetic according to claim 5, wherein 30 to 100% by mass of the plate-like powder is a pearl pigment.   The powder cosmetic according to any one of claims 1 to 6, wherein the oil agent is one or more oil agents selected from hydrocarbon oils, ester oils and ether oils.   The powder cosmetic according to any one of claims 1 to 7, wherein 30 to 100% by mass of the powder of component (B) is a spherical powder. A method for producing a powder cosmetic,
(A): 30 to 100% by mass of a composite powder obtained by mixing (a) powder and (b) oil in supercritical or subcritical carbon dioxide,
(B): 69.65% by mass of powder other than component (A),
(C): Oil agent 0 to 29.5% by mass
The mass ratio of (a) and (b) is 99.5: 0.5 to 70:30, and the powder component is 70 to 99.5% by mass in the total composition of the powder cosmetic, The manufacturing method of the powder cosmetics mixed so that an oil agent component may be 0.5-30 mass%.