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WO2025134801A1 - Produit cosmétique solide en poudre - Google Patents

Produit cosmétique solide en poudre Download PDF

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Publication number
WO2025134801A1
WO2025134801A1 PCT/JP2024/043142 JP2024043142W WO2025134801A1 WO 2025134801 A1 WO2025134801 A1 WO 2025134801A1 JP 2024043142 W JP2024043142 W JP 2024043142W WO 2025134801 A1 WO2025134801 A1 WO 2025134801A1
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WO
WIPO (PCT)
Prior art keywords
cosmetic
oil
powder
mass
dimethicone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2024/043142
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English (en)
Japanese (ja)
Inventor
ゆい 中村
かおり 久保田
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Shiseido Co Ltd
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Shiseido Co Ltd
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Filing date
Publication date
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Publication of WO2025134801A1 publication Critical patent/WO2025134801A1/fr
Pending legal-status Critical Current
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/25—Silicon; Compounds thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/89—Polysiloxanes
    • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/89—Polysiloxanes
    • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
    • A61K8/894—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/02—Preparations containing skin colorants, e.g. pigments

Definitions

  • the present invention relates to a solid cosmetic product in powder form. More specifically, the present invention relates to a solid cosmetic product in powder form that has excellent elasticity and usability, and is suitable for mass production by a manufacturing method using wet molding (molding).
  • Powdered cosmetic products have a structure in which powdered ingredients are solidified with a binder that is mainly oily, and are widely used as a form of makeup cosmetics such as foundation and eye shadow.
  • solid powdered cosmetic products are required to have not only basic cosmetic properties such as makeup effect and makeup retention, but also excellent product properties such as impact resistance and mass production, and ease of use such as ease of removal from containers and high elasticity when used.
  • Powdered solid cosmetics are generally manufactured using either a molding method in which the powder is filled into a central plate and pressed in a metal mold to harden (dry molding method), or a method in which a solvent is added to the raw material to make a slurry, which is filled into the central plate and molded by drying and evaporating the solvent after pressing (wet molding method).
  • the solid cosmetic of the above-mentioned Patent Document 1 contains a volatile oil to dissolve (D) the dextrin fatty acid ester to improve the uniformity of the cosmetic film, and is therefore considered suitable for manufacturing using the dry molding method (paragraphs 0015 and 0059).
  • the wet molding method has the advantage that the inner tray is filled with a slurry, so it can be stably molded regardless of the shape of the inner tray, and it can produce a cosmetic product with a soft feel when used.
  • the wet molding method requires a (heated) drying process to remove the solvent added to form the slurry, and as the process is more complicated than the dry molding method, it is sometimes not suitable for mass production.
  • Patent Document 3 proposes using a specific non-volatile hydrocarbon oil as the oil that constitutes the cosmetic in order to facilitate the removal of the solvent (non-volatile silicone oil).
  • a heating process is essential for their production in order to melt (dissolve) the wax.
  • the present invention aims to provide a powdered solid cosmetic product that has excellent elasticity when used, can be manufactured using a simple wet molding process, and is suitable for mass production, as well as a manufacturing method thereof.
  • a powdered solid cosmetic product containing specified amounts of silicone elastomer, powder, and oil where the powder contains silica and the oil contains a specified amount of non-volatile dimethicone, has an excellent elastic feel when used, and can be manufactured in a simple process by using a wet molding method that uses non-volatile dimethicone as a solvent for forming a slurry, thus completing the present invention.
  • the present invention provides (A) 0.5 to 6% by mass of a silicone elastomer relative to the total amount of the cosmetic; (B) a powder component; and (C) an oil component,
  • the (B) powder component contains silica
  • the present invention provides a solid cosmetic in powder form, characterized in that the oil component (C) contains 25 to 50% by mass of non-volatile dimethicone having a viscosity of 10 cs or less, based on the total amount of the cosmetic.
  • the present invention relates to (1) a step of mixing (A) a silicone elastomer, (B) (b1) a powder component containing silica, and (C) a raw material composition containing an oil with (c1) a non-volatile dimethicone having a viscosity of 10 cs or less to form a slurry; and (2) a step of filling the slurry into a container and compression-molding the slurry while removing a portion of the (c1) non-volatile dimethicone;
  • the present invention also provides a method for producing the solid cosmetic preparation in powder form, comprising the steps of:
  • the powdered solid cosmetic of the present invention contains a specified amount of silicone elastomer and is a well-balanced blend of oil containing non-volatile dimethicone and powder containing oil-absorbing silica, so it has a soft and elastic feel when used and is also highly impact resistant.
  • the high-brightness powder and coloring materials adhere easily to the skin, and it is a cosmetic that also has an excellent finish.
  • the method for producing a powdered solid cosmetic product of the present invention can be produced so that a portion of the non-volatile dimethicone used as a solvent for forming the slurry remains in the molded cosmetic product, eliminating the need for a heat drying process to remove the solvent, simplifying the production process and making it suitable for mass production.
  • the silicone elastomer (also referred to as "Component A") used in the cosmetic of the present invention is not particularly limited as long as it can be used in cosmetics, and can be selected from emulsifying or non-emulsifying silicone elastomers.
  • emulsifying silicone elastomers include partially crosslinked polyether-modified silicones in which silicone chains are crosslinked with polyether chains, and partially crosslinked polyglycerin-modified silicones in which silicone chains are crosslinked with polyglycerin chains.
  • non-emulsifying silicone elastomers include silicone crosslinked products in which silicone chains are crosslinked with alkyl chains or vinyl methicone chains. The silicone chains may have alkyl side chains, phenyl side chains, or silicone side chains.
  • emulsion-type silicone elastomers include, but are not limited to, (dimethicone/(PEG-10/15)) crosspolymer, (PEG-15/lauryl dimethicone) crosspolymer, (PEG-10/lauryl dimethicone) crosspolymer, (PEG-15/lauryl polydimethylsiloxyethyl dimethicone) crosspolymer, (dimethicone/polyglycerin-3) crosspolymer, (lauryl dimethicone/polyglycerin-3) crosspolymer, (polyglyceryl-3/lauryl polydimethylsiloxyethyl dimethicone) crosspolymer, etc.
  • non-emulsifying silicone elastomers include, but are not limited to, dimethicone crosspolymer, (dimethicone/vinyl dimethicone) crosspolymer, (dimethicone/phenylvinyl dimethicone) crosspolymer, (vinyl dimethicone/lauryl dimethicone) crosspolymer, (lauryl polydimethylsiloxyethyl dimethicone/bisvinyl dimethicone) crosspolymer, etc.
  • the silicone elastomer in the form of a swollen substance (silicone gel) swollen with a liquid oil (hereinafter referred to as "liquid oil") at room temperature (25°C).
  • liquid oils used for swelling include silicone oil, hydrocarbon oil, ester oil, and higher fatty acid.
  • Swelling of silicone elastomer may be commercially available.
  • examples of commercially available products that are preferably used in the present invention include "KSG-210 (trade name)” (dimethicone swollen product of (dimethicone/(PEG-10/15)) crosspolymer), "KSG-360Z (trade name)” (dimethicone swollen product of (PEG-15/lauryl polydimethylsiloxyethyl dimethicone) crosspolymer), "KSG-710 (trade name)” (dimethicone swollen product of (dimethicone/polyglycerin-3) crosspolymer), and "KSG-16 (trade name)” (dimethicone swollen product of (dimethicone/vinyl dimethicone) crosspolymer), all manufactured by Shin-Etsu Chemical Co., Ltd.
  • the amount of silicone elastomer (A) in the cosmetic of the present invention is 0.5 to 6% by mass, and preferably 1 to 6% by mass, based on the total amount of the cosmetic, in terms of actual elastomer content.
  • the amount of silicone elastomer (A) can be adjusted appropriately within the above range, and can be, for example, 2 to 5% by mass, 2.5 to 4% by mass, or more than 4% by mass and 6% by mass or less. If the amount is less than 0.5% by mass, the cosmetic becomes too hard to mold, and if it is blended in an amount exceeding 6% by mass, the cosmetic becomes soft, and both impact resistance and stability decrease.
  • (B) Powder Component The powder component (also referred to as “Component B") blended in the cosmetic of the present invention contains (b1) silica. It is believed that blending (b1) silica allows the relatively large amount of (C) oil (including (c1) non-volatile dimethicone) to be absorbed appropriately, improving the feel (elasticity, etc.) of the cosmetic after molding.
  • the silica used in the present invention may be the silica (also referred to as "silicic anhydride”) that is usually incorporated in cosmetics, and it is particularly preferable to use spherical silica powder.
  • "Spherical powder” refers to a powder with a spherical or nearly spherical outer shape, with the ratio of the major axis to the minor axis being 1.2 or less.
  • the silica used in the present invention may be any of porous, non-porous, and hollow powders.
  • the average particle size of the silica is preferably about 2 to 20 ⁇ m.
  • the average particle size of the powder containing silica (component B) can be measured in accordance with a laser diffraction/scattering method.
  • silica those having an oil absorption of 30 mL/100 g or more are preferred, and those having an oil absorption of 50 mL/100 g or more are more preferred.
  • the upper limit of the oil absorption is not particularly limited, but is usually 300 mL/100 g or less.
  • the "oil absorption amount” is a value measured in accordance with JIS K5101-13-2:2004 (boiled linseed oil method). Specifically, it is a value that can be obtained by replacing "boiled linseed oil” with "squalane” in the following method. 1.5 g of spherical silica sample is collected on a medicine wrapping paper and transferred to a glass measuring plate.
  • Oil absorption amount (mL/100g) (A/W) x 100 (A is the amount of boiled linseed oil dropped (mL), and W is the amount of sample taken (g))
  • the silica (b1 component) preferably used in the present invention can also be specified by its specific surface area.
  • the "specific surface area" of silica can be calculated by measuring the amount of nitrogen adsorbed to the silica at 77K and analyzing it using the BET method.
  • the silica (b1 component) preferably used in the present invention has a specific surface area of 10 m2 /g or more, more preferably 50 m2 /g or more, and even more preferably 100 m2 /g or more.
  • the upper limit of the specific surface area is not particularly limited, but is usually 1000 m2 /g or less.
  • spherical silica having an oil absorption of 30 mL/100 g and/or a specific surface area of 10 m 2 /g or more is used as the silica (ingredient b1), a cosmetic preparation having elasticity and good usability is obtained.
  • the blending amount of silica (component b1) in the cosmetic of the present invention is preferably 2 to 15 mass % relative to the total amount of the cosmetic, more preferably 3 to 12 mass %, and even more preferably 5 to 10 mass %. If the blending amount of silica (ingredient b1) is less than 2 mass %, the molded cosmetic material will not have an appropriate hardness and will be inferior in usability.
  • the powder components (B component) blended in the cosmetic of the present invention, other than silica (b1 component), (“other powders") are not particularly limited as long as they are those commonly used in powdered solid cosmetics.
  • other powders include body pigments, inorganic pigments (white pigments, colored pigments), organic pigments, pearlescent agents (also known as glittering pigments), UV scattering agents, other inorganic powders and organic powders, etc.
  • powders include, but are not limited to: Talc, mica, kaolin, sericite, muscovite, gold mica, synthetic mica, synthetic fluorine gold mica, red mica, biotite, calcined talc, calcined sericite, calcined muscovite, calcined gold mica, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, tungstate metal salts, magnesium, zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, metal soap (e.g., zinc myristate, calcium palmitate, aluminum stearate, etc.), photochromic titanium oxide (titanium dioxide sintered with iron oxide), reduced zinc oxide; organic powder (e.g., polyamide resin powder (nylon powder), polyethylene powder,
  • organic pigments include Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 228, Red No. 405, Orange No. 203, Orange No. 204, Yellow No. 205, Yellow No. 401, Blue No. 404, Red No. 3, Red No. 104, Red No. 106, Red No. 227, Red No. 230, Red No. 401, Red No. 505, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Green No. 3, and Blue No. 1.
  • the body pigments such as mica and talc are important powder components for constituting solid powder cosmetics.
  • the body pigments of the present invention it is preferable that most or all of the body pigments are mica.
  • Coloring materials such as inorganic pigments and pearling agents play an important role in the cosmetic effects exhibited by solid powder cosmetics.
  • the blending amount of the pearling agent is preferably about 5 to 40% by mass of the total amount of the cosmetic, and the blending amount of the coloring pigment such as iron oxide is preferably about 0.5 to 20% by mass of the total amount of the cosmetic. Therefore, the blending ratio (mass ratio) of the pearling agent to the coloring pigment is preferably in the range of 1:4 to 80:1, more preferably 1:3 to 20:1, and even more preferably 1:2 to 2:1.
  • the oil (also referred to as “Component C”) incorporated in the cosmetic composition of the present invention contains (c1) non-volatile dimethicone having a viscosity of 10 cs or less.
  • “Non-volatile dimethicone with a viscosity of 10 cs or less” (also referred to as “c1 component”) is a liquid dimethicone (polydimethylsiloxane) at room temperature (25°C), and is a non-volatile silicone oil with a viscosity (kinetic viscosity) of 10 cs (centistokes) or less.
  • non-volatile means that the volatile content is 5% or less when left at atmospheric pressure and 105°C for 3 hours.
  • volatile content refers to the value of the weight change rate (reduction rate due to volatilization) when a filter paper is placed on a glass petri dish, about 0.2 g of a sample is dropped, and the weight change rate is measured by a gravimetric method.
  • a volatile content of more than 5% measured under the same conditions is considered to be "volatile”.
  • the non-volatile dimethicone (ingredient c1) used in the present invention is a dimethicone having a viscosity of 10 cs or less, preferably 8 cs or less, more preferably about 6 cs, and preferably a linear dimethicone.
  • the lower limit of the viscosity is not particularly limited as long as it is "non-volatile,” but is usually 6 cs or more.
  • the amount of non-volatile dimethicone (ingredient c1) in the cosmetic of the present invention is 25-50% by mass, preferably 25-45% by mass, and more preferably 30-40% by mass, based on the total amount of the cosmetic. If the amount of non-volatile dimethicone is less than 25% by mass or more than 50% by mass, a cosmetic with elasticity cannot be obtained.
  • the oil (ingredient C) in this invention which is a non-volatile oil other than non-volatile dimethicone (ingredient c1), is not particularly limited as long as it is one that can be used in general cosmetics, but it is preferable to blend (c2) a non-silicone oil that is liquid at room temperature (25°C) (also called “non-silicone liquid oil” or “ingredient c2").
  • non-silicone liquid oils examples include cetyl octanoate, cetyl ethylhexanoate, isodecyl pivalate (isodecyl neopentanoate), hexyldecyl dimethyloctanoate, ethyl laurate, hexyl laurate, isopropyl myristate, 2-hexyldecyl myristate, myristyl myristate, octyldodecyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, and 2-heptyl palmitate.
  • the amount of non-silicone liquid oil (ingredient c2) in the cosmetic of the present invention is usually 1 to 20% by mass, preferably 1 to 15% by mass, and more preferably 1 to 10% by mass, based on the total amount of the cosmetic.
  • the cosmetic of the present invention may contain a non-volatile silicone oil (also referred to as "other non-volatile silicone oil”) other than non-volatile dimethicone (ingredient c1).
  • non-volatile silicone oils include dimethylpolysiloxane (dimethicone; provided that the viscosity exceeds 10 cs), methylphenylpolysiloxane, diphenylpolysiloxane, and other chain polysiloxanes, amino-modified polysiloxanes, polyether-modified polysiloxanes, alkyl-modified polysiloxanes, fluorine-modified polysiloxanes, and other modified polysiloxanes.
  • the blending amount of the other non-volatile silicone oil is less than that of non-volatile dimethicone (ingredient c1), and the blending amount of the other non-volatile silicone oil relative to the total amount of the cosmetic is preferably 5% by mass or less, more preferably 3% by mass or less, and even more preferably 1% by mass or less.
  • the cosmetic of the present invention includes an embodiment that does not contain other non-volatile silicone oils.
  • the cosmetic of the present invention may contain volatile oils.
  • Volatile oils include hydrocarbon oils with low boiling points (e.g., boiling points of 200°C or less), such as isododecane, isohexadecane, and light liquid isoparaffin, and low boiling point chain or cyclic silicone oils, such as octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane.
  • hydrocarbon oils with low boiling points e.g., boiling points of 200°C or less
  • isododecane isohexadecane
  • light liquid isoparaffin and low boiling point chain or cyclic silicone oils, such as octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane.
  • formulations containing volatile oils are subject to restrictions, such as the need to use airtight containers for the molded cosmetic.
  • the amount of volatile oils in the molded cosmetic is preferably less than 5% by mass, more preferably 3% by mass or less, and even more preferably 1% by mass or less, based on the total amount of the cosmetic.
  • the cosmetic of the present invention includes embodiments that do not contain volatile oils.
  • the oil (ingredient C) of the cosmetic of the present invention may contain oil that is solid or semi-solid at room temperature (25°C) ("solid oil or semi-solid oil").
  • solid or semi-solid oil include solid oils and fats such as cacao butter, coconut oil, horse oil, hydrogenated coconut oil, palm oil, beef tallow, mutton tallow, hardened beef tallow, palm kernel oil, lard, beef bone fat, Japan Rice Clover kernel oil, hardened oil, beef foot fat, Japan Rice Clover, and hydrogenated castor oil; beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, Japanese holly wax, whale wax, montan wax, bran wax, lanolin, kapok wax, lanolin acetate, sugar cane wax, lanolin fatty acid isopropyl, reduced lanolin, jojoba
  • waxes include wax, hard lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol a
  • the incorporation of solid oils such as wax requires a heating step to dissolve or melt the wax, it is preferable to minimize the amount of wax incorporated in the cosmetic of the present invention.
  • the amount of wax incorporated is preferably less than 2% by mass, more preferably less than 1% by mass, and even more preferably less than 0.5% by mass, based on the total amount of the cosmetic.
  • the cosmetic of the present invention includes an embodiment that does not contain wax.
  • the oil (ingredient C) of the cosmetic of the present invention may contain a substance that thickens liquid oil (“oil thickener” or "oil gelling agent”), such as a dextrin fatty acid ester.
  • oil thickener or "oil gelling agent”
  • the cosmetic of the present invention preferably contains less dextrin fatty acid ester by mass, and more preferably less than 0.5% by mass.
  • the cosmetic of the present invention includes embodiments that do not contain a dextrin fatty acid ester.
  • the cosmetic of the present invention may contain, in addition to the above-mentioned essential components (A) silicone elastomer, (B) powder component, and (C) oil, other optional components that can be blended into solid cosmetic compositions in powder form, within a range that does not impair the effects of the present invention.
  • other optional components include, but are not limited to, surfactants, UV absorbers, moisturizers, antioxidants, film-forming agents, preservatives, various drugs, and fragrances.
  • Another aspect of the present invention is a method for producing a (1) a step of mixing (A) a silicone elastomer, (B) (b1) a powder component containing silica, and (C) a raw material composition containing an oil with (c1) a non-volatile dimethicone having a viscosity of 10 cs or less to form a slurry; and (2) a step of filling the slurry into a container and compression-molding the slurry while removing a portion of the (c1) non-volatile dimethicone;
  • the present invention relates to a method for producing a solid cosmetic product in powder form, comprising the steps of:
  • (A) silicone elastomer, (B) powder component, (b1) silica, (C) oil, and (c1) non-volatile dimethicone having a viscosity of 10 cs or less are as described above.
  • raw materials including (A) silicone elastomer, (B) powder component, and (C) oil are mixed to prepare a raw material composition (raw material preparation step).
  • the (B) powder component contains (b1) silica.
  • the (C) oil contains (c2) non-volatile non-silicone liquid oil, and preferably further contains (c1) non-volatile dimethicone with a viscosity of 10 cs or less.
  • the blending amount of each component, except for (c2) non-volatile non-silicone liquid oil is within the range described above for the cosmetic.
  • the raw material preparation process can be carried out using equipment such as a Henschel Mixer (registered trademark) or a pulverizer.
  • equipment such as a Henschel Mixer (registered trademark) or a pulverizer.
  • a solvent is added to the prepared raw material composition and mixed to form a slurry (slurry formation step).
  • the solvent and the raw material composition are put into an apparatus such as a disperser mixer, a homogenizer, a planetary mixer, a Combimix (registered trademark), an Ajihomo mixer, or a twin-screw kneader, and mixed/dispersed.
  • the solvent used in the slurry formation step (c1) non-volatile dimethicone having a viscosity of 10 cs or less is used.
  • the solvent may contain a volatile solvent such as water, a lower alcohol, a volatile silicone oil, or a volatile hydrocarbon oil.
  • the remaining volatile solvent may affect the properties of the cosmetic material after molding, so a heat drying process may be required to completely remove the volatile solvent. Therefore, in the manufacturing method of the present invention, it is preferable that the solvent used in the slurry formation process is composed only of (c1) non-volatile dimethicone with a viscosity of 10 cs or less.
  • the mixing ratio (mass ratio) of the solvent and the raw material composition in the slurry formation process is preferably within the range of 1/2 to 3/2, with the value of solvent (mass)/raw material composition (mass) being more preferably within the range of 7/10 to 11/10.
  • the slurry obtained in the slurry formation step is filled into a container and compression molded while removing the solvent (compression molding step).
  • the method for carrying out the compression molding step is not particularly limited, and any known method can be used.
  • the cosmetic of the present invention is obtained by filling the slurry into a container such as a metal or resin inner plate by injection filling or the like, and compression molding while removing the solvent in the filled slurry by suction or absorption.
  • the manufacturing method of the present invention is a method suitable for mass-producing the cosmetic of the present invention. The above is the first embodiment of the manufacturing method of the present invention.
  • a raw material composition in the "raw material preparation step" of the first embodiment, may be prepared without blending the silicone elastomer (A), and the silicone elastomer (A) may be dispersed separately in a solvent used in the "slurry formation step", after which the above-mentioned "slurry formation step” and “compression molding step” may be carried out.
  • This is the second embodiment of the manufacturing method of the present invention.
  • the manufacturing method of the second aspect includes the steps of: (1) (B) (b1) a step of preparing a raw material composition containing a powder component including silica and (C) an oil component; (2) A step of dispersing (A) a silicone elastomer in (c1) a non-volatile dimethicone having a viscosity of 10 cs or less to prepare a solvent; (3) mixing the raw material composition with a solvent to form a slurry; (4) filling the slurry into a container and compression-molding the slurry while removing a portion of the (c1) non-volatile dimethicone;
  • the method for producing the solid cosmetic preparation in powder form of the present invention comprises the steps of:
  • the apparatus and conditions used in the second embodiment are similar to those in the first embodiment.
  • the dispersion state of the blended ingredients in the slurry obtained in the "slurry formation step” becomes even better, and the powder solid cosmetic product after compression molding has an even smoother feel when used. Also, by dispersing the silicone elastomer (A) in a solvent in advance, there is an advantageous effect in terms of manufacturing in that the silicone elastomer is less likely to form lumps.
  • the cosmetic preparation of the present invention is preferably produced by the method of the first or second aspect described above.
  • the cosmetic product according to the present invention can be provided as a powdered solid cosmetic product with a highly elastic feel when used, for example in the form of makeup cosmetics such as foundation, eye shadow, cheek color, body powder, face powder, perfume powder, baby powder, pressed powder, deodorant powder, loose powder (face powder), etc.
  • makeup cosmetics such as foundation, eye shadow, cheek color, body powder, face powder, perfume powder, baby powder, pressed powder, deodorant powder, loose powder (face powder), etc.
  • Solid cosmetic powder compositions having the formulations shown in Tables 1 and 2 below were prepared as follows. First, raw material compositions having the formulations shown in Tables 3 and 4 were prepared, and 70 g of a solvent (non-volatile dimethicone (silicone KF-96A-6T (Shin-Etsu Chemical Co., Ltd.)) was added to each raw material composition (100 g) to form a slurry. Next, the slurry was filled into a container while sucking out the solvent, and compression molded to produce the corresponding cosmetics in Tables 1 and 2.
  • a solvent non-volatile dimethicone (silicone KF-96A-6T (Shin-Etsu Chemical Co., Ltd.)
  • the cosmetics of each example were evaluated and measured for usability (elasticity) and mass productivity.
  • the evaluation/measurement methods are as follows.
  • the results of the evaluation/measurement of the cosmetics of each example are shown in Tables 1 and 2.
  • the cosmetics of the present invention (Examples 1 to 6) in which the blending amount of (A) silicone elastomer is 0.5 to 6 mass%, the blending amount of (c1) non-volatile dimethicone having a viscosity of 10 cs or less is within the range of 25 to 50 mass%, and (B) powder component contains (b1) silica, had appropriate hardness and excellent elasticity during use.
  • Example 6 which blended an organic pigment, further improved color development.
  • Example 2 which blended a dextrin fatty acid ester, had a lot of solvent loss during wet molding, and was sometimes not suitable for mass production.
  • Comparative Example 1 in which the powder component (B) did not contain (b1) silica, the cosmetic material after molding was too soft and had poor usability.
  • Comparative Example 2 in which the silicone elastomer (A) was not blended, there was no solvent loss during wet molding, and molding was not possible. Furthermore, when the blending amount of the non-volatile dimethicone (c1) was not within the specified range of 25 to 50 mass %, the cosmetic material lacked elasticity (Comparative Examples 3 and 4).
  • Example 1 when the raw material composition of Example 1 was used and the solvent for forming the slurry was replaced with diphenylsiloxyphenyl trimethicone (methylphenylpolysiloxane: KF-56 (Shin-Etsu Chemical Co., Ltd.)), a non-volatile silicone oil other than dimethicone, wet molding was not possible.
  • diphenylsiloxyphenyl trimethicone methylphenylpolysiloxane: KF-56 (Shin-Etsu Chemical Co., Ltd.)
  • the solid cosmetic powder compositions of Examples 1 to 6 were produced using the production method of the second embodiment.
  • a composition (100 g) was used in which the "silicone elastomer" ((dimethicone/(PEG-10/15)) crosspolymer) in the formulation of Table 3 was replaced with the same amount of "non-volatile dimethicone” (silicone KF-96A-6T (Shin-Etsu Chemical Co., Ltd.)).

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Abstract

Le but de la présente invention est de fournir : un produit cosmétique solide en poudre qui offre une sensation d'utilisation avec une excellente élasticité, peut être produit à l'aide d'un procédé de moulage par voie humide impliquant un processus simple, et convient à la production de masse ; et un procédé de production de celui-ci. La présente invention concerne un produit cosmétique solide en poudre caractérisé en ce qu'il contient (A) 0,5-6 % en masse d'un élastomère de silicone, (B) un composant en poudre, et (C) un composant en huile ; le composant en poudre (B) comprenant de la silice ; et le composant en huile (C) contenant (c1) une diméthicone non volatile ayant une viscosité de 10 cs ou moins à raison de 25-50 % en masse par rapport à la quantité totale du produit cosmétique. La présente invention concerne également un procédé de production du produit cosmétique solide en poudre à l'aide d'un procédé de moulage par voie humide dans lequel une diméthicone non volatile ayant une viscosité de 10 cs ou moins est utilisée en tant que solvant.
PCT/JP2024/043142 2023-12-20 2024-12-06 Produit cosmétique solide en poudre Pending WO2025134801A1 (fr)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006120876A1 (fr) * 2005-05-02 2006-11-16 Kose Corporation Produit cosmetique de maquillage
JP2007291074A (ja) * 2006-03-31 2007-11-08 Kose Corp 固形粉末化粧料及び固形粉末化粧料の製造方法
JP2013209296A (ja) * 2012-03-30 2013-10-10 Kose Corp 油性固形化粧料
JP2013227277A (ja) * 2012-03-26 2013-11-07 Kose Corp 固形粉末化粧料
JP2015086156A (ja) * 2013-10-30 2015-05-07 株式会社コーセー 固形粉末化粧料
JP2020075885A (ja) * 2018-11-08 2020-05-21 株式会社伊勢半 固形粉末化粧料
JP2021066665A (ja) * 2019-10-17 2021-04-30 花王株式会社 固形化粧料
JP2021088517A (ja) * 2019-12-03 2021-06-10 株式会社 資生堂 固形化粧料
WO2021132083A1 (fr) * 2019-12-23 2021-07-01 株式会社 資生堂 Procédé de fabrication de produit cosmétique solide en poudre
JP2024033067A (ja) * 2022-08-30 2024-03-13 日本コルマー株式会社 固形粉末化粧料およびその製造方法

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006120876A1 (fr) * 2005-05-02 2006-11-16 Kose Corporation Produit cosmetique de maquillage
JP2007291074A (ja) * 2006-03-31 2007-11-08 Kose Corp 固形粉末化粧料及び固形粉末化粧料の製造方法
JP2013227277A (ja) * 2012-03-26 2013-11-07 Kose Corp 固形粉末化粧料
JP2013209296A (ja) * 2012-03-30 2013-10-10 Kose Corp 油性固形化粧料
JP2015086156A (ja) * 2013-10-30 2015-05-07 株式会社コーセー 固形粉末化粧料
JP2020075885A (ja) * 2018-11-08 2020-05-21 株式会社伊勢半 固形粉末化粧料
JP2021066665A (ja) * 2019-10-17 2021-04-30 花王株式会社 固形化粧料
JP2021088517A (ja) * 2019-12-03 2021-06-10 株式会社 資生堂 固形化粧料
WO2021132083A1 (fr) * 2019-12-23 2021-07-01 株式会社 資生堂 Procédé de fabrication de produit cosmétique solide en poudre
JP2024033067A (ja) * 2022-08-30 2024-03-13 日本コルマー株式会社 固形粉末化粧料およびその製造方法

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