WO2024135395A1 - 化粧料 - Google Patents
化粧料 Download PDFInfo
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- WO2024135395A1 WO2024135395A1 PCT/JP2023/043943 JP2023043943W WO2024135395A1 WO 2024135395 A1 WO2024135395 A1 WO 2024135395A1 JP 2023043943 W JP2023043943 W JP 2023043943W WO 2024135395 A1 WO2024135395 A1 WO 2024135395A1
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- 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
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/34—Alcohols
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- 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
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/39—Derivatives containing from 2 to 10 oxyalkylene groups
-
- 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
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
-
- 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
- A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
- A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
Definitions
- the present invention relates to cosmetics. More specifically, it relates to stable cosmetics that have a whitening effect.
- oil-in-water emulsion cosmetics have a viscous state with a smooth surface, and when applied to the skin, they can suppress the evaporation of water from the skin and give the skin a moist feel.
- Patent Document 1 describes an oil-in-water emulsion composition that is a blend of glycerin, water, polar oil, and polyglycerol fatty acid ester, and explains that it has excellent feel when used and blends well with makeup.
- pyrimidylpyrazole compounds are known as topical skin preparations with excellent whitening effects.
- Patent Document 2 describes that pyrimidylpyrazole compounds are effective in suppressing melanin production in skin pigment cells and are useful as whitening agents.
- polyglycerol fatty acid esters are highly safe and have low irritation, and cosmetics containing them have a good feel on the skin.
- a pyrimidylpyrazole compound is added to a cosmetic containing polyglycerol fatty acid esters and higher alcohols in an attempt to impart a whitening effect, the uniformity of the cosmetic gradually breaks down, and ultimately separation occurs.
- the present invention was made in consideration of the above circumstances.
- the object of the present invention is to provide a stable cosmetic product that has a whitening effect.
- the present invention is as follows:
- A a polyglycerol fatty acid ester surfactant, (B) an aliphatic alcohol having 8 to 40 carbon atoms; (C) a compound represented by the following general formula (1): (In general formula (1), R 1 , R 3 , R 4 , and R 6 are each independently an alkyl group having 1 to 3 carbon atoms, and R 2 and R 5 are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.) and pharmacologically acceptable salts thereof, (D) a compound represented by the following general formula (2): (In general formula (2), R 7 and R 8 are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.) and (E) water.
- R 1 , R 3 , R 4 , and R 6 are each independently an alkyl group having 1 to 3 carbon atoms, and R 2 and R 5 are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.
- D a compound represented by
- the component (D) is, The cosmetic preparation according to aspect 2, wherein the copolymer is one or more selected from the group consisting of a copolymer of ammonium acryloyldimethyltaurate and N-vinylpyrrolidone, and a copolymer of sodium acryloyldimethyltaurate, dimethylacrylamide, and methylenebisacrylamide.
- the HLB value of the component (A) is 10 or more and 17 or less.
- the component (C) is A compound in which R 1 , R 3 , R 4 , and R 6 in the general formula (1) are methyl groups, and R 2 and R 5 are hydrogen atoms;
- the cosmetic preparation according to aspect 1 which is one or more selected from a compound in which R 1 , R 2 , R 3 , R 4 , and R 6 in the general formula (1) are methyl groups and R 5 is a hydrogen atom, and a compound in which R 1 , R 3 , R 4 , and R 6 in the general formula (1) are methyl groups and R 2 and R 5 are ethyl groups.
- the component (C) is, A compound in which R 1 , R 3 , R 4 , and R 6 in the general formula (1) are methyl groups, and R 2 and R 5 are hydrogen atoms;
- the component (C) is, A compound in which R 1 , R 3 , R 4 , and R 6 in the general formula (1) are methyl groups, and R 2 and R 5 are hydrogen atoms;
- Aspect 8 The cosmetic preparation according to any one of aspects 1 to 7, further comprising (F) an oil component.
- Aspect 9 The cosmetic according to any one of aspects 1 to 7, wherein the mass ratio of the component (D) relative to the total mass of the cosmetic is 0.1 mass% or more and 0.5 mass% or less.
- Aspect 10 The cosmetic preparation according to any one of aspects 1 to 7, which is a cream, a sunscreen, a foundation, a milky lotion, or a beauty serum.
- the present invention provides a stable cosmetic product that has a whitening effect.
- the cosmetic product of the present invention is preferably used, for example, as a whitening cream.
- a polyglycerol fatty acid ester surfactant hereinafter, simply referred to as a "fatty acid ester surfactant”
- aliphatic alcohol an aliphatic alcohol having 8 to 40 carbon atoms
- aliphatic alcohol one or more compounds selected from
- the cosmetic composition of the present invention may further contain (F) oil in addition to the above components (A) to (E).
- the inventors conducted a detailed study on the phenomenon in which the uniformity of a cosmetic formulation containing a polyglycerol fatty acid ester and a higher alcohol is destroyed when pyrimidylpyrazole compounds are added to the cosmetic formulation.
- a surfactant e.g., polyglycerol fatty acid ester
- a higher alcohol form a bilayer structure, and water is trapped between the hydrophilic groups of this layered structure to form a network in water, resulting in a gel state and a uniform appearance.
- oil is included along with the surfactant and higher alcohol, the oil is emulsified in the gel, forming a homogeneous oil-in-water emulsion called " ⁇ -gel.”
- Cosmetics containing the ⁇ -gel structure have the advantage that the sensation of use can be adjusted appropriately over a wide range, from a refreshing sensation to a slightly rich sensation.
- the inventors discovered that when an AMPS thickener is added to a cosmetic formulation containing a polyglycerol fatty acid ester and a higher alcohol, the cosmetic formulation maintains its homogeneous state and maintains its ⁇ -gel state even when pyrimidylpyrazole compounds are further added, and thus arrived at the present invention.
- the component (A) in the cosmetic of the present invention is a polyglycerol fatty acid ester surfactant.
- the fatty acid ester surfactant (A) is blended in the cosmetic of the present invention to form a bilayer structure together with the fatty alcohol (B) described below, and to trap water between the hydrophilic groups in this layer structure, thereby making the cosmetic into a gel state with a uniform appearance.
- the fatty acid ester surfactant may be a compound in which a fatty acid is ester-bonded to one or both ends of polyglycerin.
- the degree of polymerization of the polyglycerol may be 4 or more, 5 or more, 6 or more, or 8 or more, and may be 20 or less, 18 or less, 15 or less, or 12 or less.
- the number of carbon atoms in the fatty acid may be 6 or more, 8 or more, 10 or more, 12 or more, 14 or more, or 16 or more, and may be 24 or less, 22 or less, 20 or less, 18 or less, 15 or less, 12 or less, or 10 or less.
- the number of carbon atoms in this fatty acid includes the carbon of the carboxyl group.
- the fatty acid may be a saturated or unsaturated fatty acid.
- the alkyl group of the fatty acid may be linear or branched. In one embodiment of the invention, the alkyl group of the fatty acid is saturated and linear. In another embodiment of the invention, the alkyl group of the fatty acid is saturated and branched. In yet another embodiment of the invention, the alkyl group of the fatty acid is unsaturated and linear. In yet another embodiment of the invention, the alkyl group of the fatty acid is unsaturated and branched.
- the fatty acid ester surfactant (A) in the cosmetic of the present invention may be one or more selected from, for example, polyglyceryl-10 caprate, polyglyceryl-6 caprylate, polyglyceryl-10 laurate, polyglyceryl-10 myristate, polyglyceryl-10 dimyristate, polyglyceryl-10 stearate, polyglyceryl-10 distearate, polyglyceryl-10 diisostearate, etc.
- polyglyceryl-10 caprate polyglyceryl-6 caprylate
- polyglyceryl-10 laurate polyglyceryl-10 myristate
- polyglyceryl-10 dimyristate polyglyceryl-10 stearate
- polyglyceryl-10 distearate polyglyceryl-10 diisostearate
- the HLB value of the fatty acid ester surfactant may be 10 or more, 12 or more, 14 or more, or 16 or more, and may be 17 or less, 15 or less, 14 or less, 13 or less, or 12 or less.
- Aliphatic Alcohol Component (B) in the cosmetic of the present invention is an aliphatic alcohol having a carbon number of 8 to 40.
- the aliphatic alcohol (B) is blended in the cosmetic of the present invention to form a bilayer structure together with the above-mentioned component (A), and to trap water between the hydrophilic groups in this layer structure, thereby making the cosmetic into a gel state with a uniform appearance.
- the carbon number of the aliphatic alcohol is 8 or more, and may be 10 or more, 12 or more, 14 or more, or 16 or more. Also, the carbon number is 40 or less, and may be 36 or less, 32 or less, 28 or less, 26 or less, or 24 or less.
- the (B) fatty alcohol may be linear or branched. In one embodiment of the present invention, the (B) fatty alcohol is saturated and linear. In another embodiment of the present invention, the (B) fatty alcohol is saturated and branched. In yet another embodiment of the present invention, the (B) fatty alcohol is unsaturated and linear. In yet another embodiment of the present invention, the (B) fatty alcohol is unsaturated and branched.
- the fatty alcohol (B) in the cosmetic of the present invention may be one or more selected from lauryl alcohol, myristyl alcohol, palmityl alcohol (cetanol), stearyl alcohol, behenyl alcohol, etc.
- a mixture of palmityl alcohol and stearyl alcohol, which is commercially available as “cetearyl alcohol” may also be used as the fatty alcohol (B) in the cosmetic of the present invention.
- the component (C) in the cosmetic of the present invention is a compound represented by the following general formula (1): (In general formula (1), R 1 , R 3 , R 4 , and R 6 are each independently an alkyl group having 1 to 3 carbon atoms, and R 2 and R 5 are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.) and pharmacologically acceptable salts thereof.
- pyrimidylpyrazole compounds (C) are blended into the cosmetic of the present invention to impart a whitening effect to the cosmetic.
- the alkyl group having 1 to 3 carbon atoms for R 1 to R 6 may be, for example, a methyl group, an ethyl group, an n-propyl group, an isopropyl group, or a cyclopropyl group, in particular a methyl group or an ethyl group, and typically a methyl group.
- R 1 , R 3 , R 4 , and R 6 in the above general formula (1) are all methyl groups.
- R 2 and R 5 in the above general formula (1) are all hydrogen atoms.
- R 1 , R 3 , R 4 , and R 6 in the above general formula (1) are all methyl groups, and R 2 and R 5 are all hydrogen atoms.
- R 1 , R 2 , R 3 , R 4 , and R 6 in the above general formula (1) are all methyl groups.
- R 5 in the above general formula (1) is a hydrogen atom.
- R 1 , R 2 , R 3 , R 4 , and R 6 in the above general formula (1) are all methyl groups and R 5 is a hydrogen atom.
- R2 and R5 in the above general formula (1) are all ethyl groups.
- R1 , R2 , R3 , R4 , and R6 in the above general formula (1) are all methyl groups, and R2 and R5 are all ethyl atoms.
- the component (B) in the present invention is 2-(3,5-dimethylpyrazol-1-yl)-4,6-dimethylpyrimidine
- the compound may be one or more compounds selected from 2-(3,5-dimethylpyrazol-1-yl)-4,5,6-trimethylpyrimidine, and 5-ethyl-2-(4-ethyl-3,5-dimethylpyrazol-1-yl)-4,6-dimethylpyrimidine, and pharmacologically acceptable salts thereof.
- the pharmacologically acceptable salt of the compound represented by the above general formula (1) may be, for example, an acid addition salt of the compound represented by the above general formula (1).
- the acid in the acid addition salt may be an inorganic acid or an organic acid.
- the inorganic acid may be, for example, hydrochloric acid (hydrochloric acid), hydrobromic acid, sulfuric acid, phosphoric acid, etc.
- the organic acid may be, for example, acetic acid, propionic acid, citric acid, lactic acid, oxalic acid, maleic acid, fumaric acid, succinic acid, tartaric acid, methanesulfonic acid, etc.
- the compound represented by the above general formula (1) can be synthesized by a known method and is also available as a commercial product.
- a representative method for synthesizing the compound represented by the above general formula (1) is disclosed, for example, in the above-mentioned Patent Document 2.
- the component (D) in the cosmetic composition of the present invention is a compound represented by the following general formula (2):
- R 7 and R 8 are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.
- It is a thickener (AMPS thickener) having a structure represented by the following formula:
- the (D) AMPS thickener is believed to have the function of stably maintaining the laminated structure of the bilayer membrane formed by the above-mentioned (A) fatty acid ester surfactant and (B) fatty alcohol over a wide pH range.
- A fatty acid ester surfactant
- B fatty alcohol
- a refreshing feeling can be obtained.
- the alkyl groups having 1 to 3 carbon atoms of R7 and R8 in the above general formula (2) may each independently be a methyl group, an ethyl group, an n-propyl group, or an i-propyl group. In one embodiment of the present invention, both R7 and R8 in the general formula (2) are methyl groups.
- the AMPS thickener (D) in the cosmetic composition of the present invention is, for example, A copolymer of ammonium acryloyldimethyltaurate and N-vinylpyrrolidone, Copolymer of sodium acryloyldimethyltaurate, dimethylacrylamide and methylenebisacrylamide, (acrylamide/sodium acryloyldimethyltaurate) copolymer, (dimethylacrylamide/sodium acryloyldimethyltaurate) crosspolymer, (hydroxyethyl acrylate/sodium acryloyldimethyltaurate) copolymer, (Sodium acrylate/sodium acryloyldimethyltaurate) copolymer, Ammonium acryloyldimethyltaurate/beheneth-25 methacrylate crosspolymer, (Sodium acrylate/acryloyldimethyltaurine/dimethylacrylamide) crosspolymer, etc., and one
- the cosmetic preparation of the present invention contains water as a solvent.
- Oil The cosmetic of the present invention may further contain an oil component (F) in addition to the above-mentioned components (A) to (E).
- an oil component that is usually used in the fields of cosmetics, pharmaceuticals, etc. may be appropriately selected and used.
- the oil may be selected from solid oils that are solid at room temperature (25°C) and liquid oils that are liquid at the same temperature.
- Solid oils include, for example, solid oils and fats such as cacao butter, coconut oil, horse tallow, hardened coconut oil, palm oil, hydrogenated palm oil, beef tallow, mutton tallow, hardened beef tallow, palm kernel oil, lard, beef bone fat, Japan wax kernel oil, hardened fat, cow's foot fat, Japan wax, and hardened castor oil; beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, Japanese laurel wax, whale wax, montan wax, bran wax, lanolin, kapok wax, lanolin acetate, sugarcane wax, lanolin fatty acid isopropyl, hexyl laurate, reduced lanolin, jojoba wax, hard lanolin, shellac wax, POE lanolin alcohol, Examples of waxes include lanolin ether, POE lanolin alcohol acetate, POE cholesterol ether, and POE hydrogenated lanolin alcohol ether; hydrocarbon waxes such as
- Liquid oils include liquid fats and oils, ester oils, hydrocarbon oils, silicone oils, etc., and one or more selected from these may be used.
- Liquid oils and fats include, for example, avocado oil, evening primrose oil, camellia oil, turtle oil, macadamia nut oil, sunflower oil, almond oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, camellia oil, sugar squalane, castor oil, linseed oil, safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, Chinese tung oil, Japanese tung oil, jojoba seed oil, germ oil, etc., and one or more selected from these may be used.
- Ester oils include, for example, cetyl octanoate, cetyl 2-ethylhexanoate, 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-heptylundecyl palmitate.
- hydrocarbon oil examples include liquid paraffin, ozokerite, squalene, pristane, polybutene, hydrogenated polybutene, etc., and one or more selected from these may be used.
- silicone oils include linear polysiloxanes such as dimethylpolysiloxane (also called “dimethicone”), methylphenylpolysiloxane, and diphenylpolysiloxane; cyclic polysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane; amino-modified polysiloxanes, polyether-modified polysiloxanes, alkyl-modified polysiloxanes, and fluorine-modified polysiloxanes; and one or more selected from these may be used.
- linear polysiloxanes such as dimethylpolysiloxane (also called “dimethicone”), methylphenylpolysiloxane, and diphenylpolysiloxane
- cyclic polysiloxanes such as octamethylcyclote
- the cosmetic preparation of the present invention may further contain other components in addition to the above-mentioned components (A) to (E) and the optional component (F).
- components include, for example, surfactants other than component (A), thickeners other than component (D), moisturizers, defoamers, cooling agents, pH adjusters, chelating agents, preservatives, antioxidants, colorants, fragrances, stabilizers, etc.
- the blending amount of the fatty acid ester surfactant (A) in the cosmetic of the present invention expressed as the mass ratio of the fatty acid ester surfactant (A) relative to the total mass of the cosmetic, may be 1.0 mass% or more, 1.5 mass% or more, 2.0 mass% or more, or 2.5 mass% or more, and may be 10.0 mass% or less, 8.0 mass% or less, 6.0 mass% or less, 5.0 mass% or less, 4.0 mass% or less, or 3.0 mass% or less.
- the amount of (B) fatty alcohol in the cosmetic of the present invention may be, as a mass ratio of (B) fatty alcohol to the total mass of the cosmetic, 0.5 mass% or more, 1.0 mass% or more, 1.5 mass% or more, 2.0 mass% or more, or 2.5 mass% or more, and may be 12.0 mass% or less, 10.0 mass% or less, 8.0 mass% or less, 6.0 mass% or less, 5.0 mass% or less, or 4.0 mass% or less.
- the blending ratio of (A) fatty acid ester surfactant and (B) fatty alcohol expressed as the mass ratio of (B) fatty alcohol to the total mass of both, may be 10 mass% or more, 15 mass% or more, 20 mass% or more, 25 mass% or more, 30 mass% or more, 40 mass% or more, or 50 mass% or more, and may be 75 mass% or less, 70 mass% or less, 65 mass% or less, 60 mass% or less, 55 mass% or less, or 50 mass% or less.
- the amount of the (C) pyrimidylpyrazole compounds in the cosmetic of the present invention may be, as a mass ratio of the (C) pyrimidylpyrazole compounds to the total mass of the cosmetic, 0.05 mass% or more, 0.10 mass% or more, 0.15 mass% or more, 0.20 mass% or more, or 0.25 mass% or more, and may be 1.0 mass% or less, 0.8 mass% or less, 0.6 mass% or less, 0.5 mass% or less, or 0.4 mass% or less.
- the amount of the (D)AMPS thickener in the cosmetic of the present invention may be, as a mass ratio of the (D)AMPS thickener to the total mass of the cosmetic, 0.01 mass% or more, 0.03 mass% or more, 0.05 mass% or more, 0.07 mass% or more, 0.08 mass% or more, or 0.1 mass% or more, and may be 1.0 mass% or less, 0.8 mass% or less, 0.6 mass% or less, 0.5 mass% or less, or 0.3 mass% or less.
- the blending ratio of the (D) AMPS thickener to the total mass of the (A) fatty acid ester surfactant and the (B) fatty alcohol may be 0.1% by mass or more, 0.3% by mass or more, 0.5% by mass or more, 1.0% by mass or more, 1.5% by mass or more, or 2.0% by mass or more, and may be 12% by mass or less, 10% by mass or less, 8% by mass or less, 6% by mass or less, 5% by mass or less, 4% by mass or less, or 3% by mass or less.
- the blending amount of the (F) oil may be 5% by mass or more, 10% by mass or more, 12% by mass or more, or 15% by mass or more, and may be 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, 23% by mass or less, or 20% by mass or less, as a mass ratio of the (F) oil to the total mass of the cosmetic.
- the pH of the present invention may be in the range of 4 or more and 8 or less.
- the cosmetic preparation of the present invention may be produced by mixing the components (A) to (E), the optional component (F), and other components that are blended as necessary, by an appropriate method.
- the temperature during mixing is, for example, 50° C. or higher and lower than 100° C., and preferably 60° C. or higher and 90° C. or lower.
- the cosmetic preparation of the present invention contains optional components other than the components (A) to (F), such as a moisturizing agent, an antifoaming agent, a cooling agent, a pH adjuster, a chelating agent, a preservative, an antioxidant, a colorant, a fragrance, a stabilizer, etc.
- the cosmetic preparation of the present invention can be, for example, an emulsion phase consisting of each of the components (A) to (D) and (F) and a portion of the component (E);
- the optional components and the main aqueous phase consisting of the remainder of component (E) may be prepared separately, and then the two are mixed together to prepare the composition.
- the temperature when the components of the emulsion phase are mixed, the temperature when the components of the main aqueous phase are mixed, and the temperature when the emulsion phase and the main aqueous phase are mixed are all, for example, from 50°C to less than 100°C, and preferably from 60°C to 90°C.
- the cosmetic of the present invention may be a cosmetic for humans, and may be in any product form.
- the cosmetic of the present invention may be in any suitable form, such as a cream, emulsion, or the like.
- the cosmetic composition of the present invention can be suitably applied to, for example, creams (e.g., skin creams), sunscreens (e.g., sunscreen emulsions), foundations (e.g., emulsion foundations), milk lotions, beauty serums, etc.
- creams e.g., skin creams
- sunscreens e.g., sunscreen emulsions
- foundations e.g., emulsion foundations
- milk lotions e.g., beauty serums, etc.
- the main aqueous phase was added to the emulsion phase and mixed, and then cooled to room temperature to obtain the cosmetic preparation.
- the amount of each component in Tables 1 to 3 is in “mass %.”
- “Compound (C-1)" in component (C) means “2-(3,5-dimethylpyrazol-1-yl)-4,6-dimethylpyrimidine hydrochloride.”
- the amount of component (E) (ion-exchanged water) that is “the remainder” means that the total amount of component (E) (ion-exchanged water) is appropriately changed to make the total amount of each cosmetic 100% by mass.
- the cosmetic composition of Reference Example 1 which does not contain the pyrimidylpyrazole compound (C), exhibited excellent stability even after being left to stand at 60°C for 5 days.
- the cosmetic compositions of Reference Examples 2 to 5, which further contain a thickener in addition to the cosmetic composition of Reference Example 1, also exhibited excellent stability even after being left to stand at 60°C for 5 days.
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Abstract
Description
(B)炭素数8~40個の脂肪族アルコール、
(C)下記一般式(1):
で表される化合物及びその薬理学的に許容される塩から選択される1種又は2種以上、
(D)下記一般式(2):
で表される構造を有する増粘剤、並びに
(E)水
を含む、化粧料。
《態様2》前記一般式(2)におけるR7及びR8がメチル基である、態様1に記載の化粧料。
《態様3》前記(D)成分が、
アクリロイルジメチルタウリンアンモニウムとN-ビニルピロリドンとの共重合体、及び
アクリロイルジメチルタウリンナトリウムとジメチルアクリルアミドとメチレンビスアクリルアミドとの共重合体
から選択される1種又は2種以上である、態様2に記載の化粧料。
《態様4》前記(A)成分のHLB値が10以上17以下である、態様1に記載の化粧料。
《態様5》前記(C)成分が、
前記一般式(1)におけるR1、R3、R4、及びR6がメチル基であり、かつ、R2及びR5が水素原子である化合物、
前記一般式(1)におけるR1、R2、R3、R4、及びR6がメチル基であり、かつ、R5が水素原子である化合物、並びに
前記一般式(1)におけるR1、R3、R4、及びR6がメチル基であり、かつ、R2及びR5がエチル基である化合物
から選択される、1種又は2種以上である、態様1に記載の化粧料。
《態様6》前記(C)成分が、
前記一般式(1)におけるR1、R3、R4、及びR6がメチル基であり、かつ、R2及びR5が水素原子である化合物、
前記一般式(1)におけるR1、R2、R3、R4、及びR6がメチル基であり、かつ、R5が水素原子である化合物、並びに
前記一般式(1)におけるR1、R3、R4、及びR6がメチル基であり、かつ、R2及びR5がエチル基である化合物
から選択される、1種又は2種以上である、態様2に記載の化粧料。
《態様7》前記(C)成分が、
前記一般式(1)におけるR1、R3、R4、及びR6がメチル基であり、かつ、R2及びR5が水素原子である化合物、
前記一般式(1)におけるR1、R2、R3、R4、及びR6がメチル基であり、かつ、R5が水素原子である化合物、並びに
前記一般式(1)におけるR1、R3、R4、及びR6がメチル基であり、かつ、R2及びR5がエチル基である化合物
から選択される、1種又は2種以上である、態様3に記載の化粧料。
《態様8》更に(F)油分を含む、態様1~7のいずれか一項に記載の化粧料。
《態様9》前記化粧料の全質量に対する前記(D)成分の質量割合が、0.1質量%以上0.5質量%以下である、態様1~7のいずれか一項に記載の化粧料。
《態様10》クリーム、日焼け止め、ファンデーション、乳液、又は美容液である、態様1~7のいずれか一項に記載の化粧料。
本発明の化粧料は、
(A)ポリグリセリン脂肪酸エステル系界面活性剤(以下、単に「脂肪酸エステル系界面活性剤」ということがある。)、
(B)炭素数8~40個の脂肪族アルコール(以下、単に「脂肪族アルコール」ということがある。)、
(C)上記一般式(1)で表される化合物及びその薬理学的に許容される塩から選択される1種又は2種以上(以下、これらをまとめて、「ピリミジルピラゾール化合物類」ということがある。)、
(D)上記一般式(2)で表される構造を有する増粘剤(以下、「AMPS増粘剤」ということがある。)、並びに
(E)水
を含む。
本発明の化粧料における(A)成分は、ポリグリセリン脂肪酸エステル系界面活性剤である。(A)脂肪酸エステル系界面活性剤は、後述の(B)脂肪族アルコールとともに2分子膜の積層構造を形成し、この積層構造の親水基間に水を抱き込んで、化粧料を均一な外観のゲル状態とするために、本発明の化粧料に配合される。
本発明の化粧料における(B)成分は、炭素数8~40個の脂肪族アルコールである。(B)脂肪族アルコールは、上述の(A)成分とともに2分子膜の積層構造を形成し、この積層構造の親水基間に水を抱き込んで、化粧料を均一な外観のゲル状態とするために、本発明の化粧料に配合される。
本発明の化粧料における(C)成分は、下記一般式(1):
で表される化合物及びその薬理学的に許容される塩から選択される1種又は2種以上である。
2-(3,5-ジメチルピラゾール-1-イル)-4,6-ジメチルピリミジン、
2-(3,5-ジメチルピラゾール-1-イル)-4,5,6-トリメチルピリミジン、及び
5-エチル-2-(4-エチル-3,5-ジメチルピラゾール-1-イル)-4,6-ジメチルピリミジン、並びに
薬理学的に許容されるこれらの塩
から選択される、1種又は2種以上の化合物であってよい。
本発明の化粧料における(D)成分は、下記一般式(2):
で表される構造を有する増粘剤(AMPS増粘剤)である。
アクリロイルジメチルタウリンアンモニウムとN-ビニルピロリドンとの共重合体、
アクリロイルジメチルタウリンナトリウムとジメチルアクリルアミドとメチレンビスアクリルアミドとの共重合体、
(アクリルアミド/アクリロイルジメチルタウリンNa)コポリマー、
(ジメチルアクリルアミド/アクリロイルジメチルタウリンNa)クロスポリマー、
(アクリル酸ヒドロキシエチル/アクリロイルジメチルタウリンNa)コポリマー、
(アクリル酸Na/アクリロイルジメチルタウリンNa)コポリマー、
(アクリロイルジメチルタウリンアンモニウム/メタクリル酸ベヘネス-25)クロスポリマー、
(アクリル酸Na/アクリロイルジメチルタウリン/ジメチルアクリルアミド)クロスポリマー
等であってよく、これらから選択される1種又は2種以上を用いてよい。
本発明の化粧料は、溶媒として水を含む。
本発明の化粧料は、上記の(A)~(E)成分の他に、更に(F)油分を含んでもよい。(F)油分としては、化粧品、医薬品等の分野で通常用いられる油分を適宜選択して使用してよい。
本発明の化粧料は、上述の(A)~(E)成分、及び任意成分である(F)成分の他に、その他の成分を更に含んでいてもよい。
本発明の化粧料における(A)脂肪酸エステル系界面活性剤の配合量は、化粧料の全質量に対する(A)脂肪酸エステル系界面活性剤の質量割合として、1.0質量%以上、1.5質量%以上、2.0質量%以上、又は2.5質量%以上であってよく、10.0質量%以下、8.0質量%以下、6.0質量%以下、5.0質量%以下、4.0質量%以下、又は3.0質量%以下であってよい。
本発明のpHは、4以上8以下の範囲内であってよい。
本発明の化粧料は、(A)~(E)の各成分、及び任意成分である(F)成分、並びに必要に応じて配合されるその他の成分を、適宜の方法によって混合することによって製造されてよい。混合時の温度は、例えば50℃以上100℃未満であり、好ましくは60℃以上90℃以下である。
(A)~(D)及び(F)の各成分、並びに(E)成分の一部から成る乳化相と、
上記任意成分及び(E)成分の残部から成る主水相と
を、それぞれ別個に調製した後に、両者を混合する方法によって調製されてよい。
本発明の化粧料は、人の化粧料であってよく、製品形態も任意である。本発明の化粧料は、例えば、クリーム状、乳化状、エマルジョン状等の適宜の形態であってよい。
各参考例、各比較例、及び各実施例の化粧料の調製は、次のように行った。先ず、イオン交換水((E)成分の一部)、並びに表1~3に記載のグリセリン脂肪酸エステル((A)成分、又は他のグリセリン脂肪酸エステル)、(B)成分、(C)成分、増粘剤((D)成分、又は他の増粘剤)、及び(F)成分を70~80℃で混合して、乳化相を調製した。また、イオン交換水((E)成分の残部)、及び表1~3に記載の主水相成分を70~80℃で混合して、主水相を調製した。
得られた化粧料をサンプル瓶中に密封し、60℃において5日間(120時間)静置した。5日間静置後の化粧料を目視で観察し、以下の基準により評価した。
A:水相と油相とが分離せず、クリーミングも全くなかった場合(極めて良好)
B:水相と油相とが分離せず、クリーミングがごく僅かに見られた場合(良好)
C:水相と油相とが分離しなかったが、クリーミングが見られた場合(やや不良)
D:水相と油相とが分離した場合(不良)
Claims (10)
- (A)ポリグリセリン脂肪酸エステル系界面活性剤、
(B)炭素数8~40個の脂肪族アルコール、
(C)下記一般式(1):
(一般式(1)中、R1、R3、R4、及びR6は、それぞれ独立して、炭素数1~3のアルキル基であり、R2及びR5は、それぞれ独立して、水素原子又は炭素数1~3のアルキル基である。)
で表される化合物及びその薬理学的に許容される塩から選択される1種又は2種以上、
(D)下記一般式(2):
(一般式(2)中、R7及びR8は、それぞれ独立して、水素原子又は炭素数1~3のアルキル基である。)
で表される構造を有する増粘剤、並びに
(E)水
を含む、化粧料。 - 前記一般式(2)におけるR7及びR8がメチル基である、請求項1に記載の化粧料。
- 前記(D)成分が、
アクリロイルジメチルタウリンアンモニウムとN-ビニルピロリドンとの共重合体、及び
アクリロイルジメチルタウリンナトリウムとジメチルアクリルアミドとメチレンビスアクリルアミドとの共重合体
から選択される1種又は2種以上である、請求項2に記載の化粧料。 - 前記(A)成分のHLB値が10以上17以下である、請求項1に記載の化粧料。
- 前記(C)成分が、
前記一般式(1)におけるR1、R3、R4、及びR6がメチル基であり、かつ、R2及びR5が水素原子である化合物、
前記一般式(1)におけるR1、R2、R3、R4、及びR6がメチル基であり、かつ、R5が水素原子である化合物、並びに
前記一般式(1)におけるR1、R3、R4、及びR6がメチル基であり、かつ、R2及びR5がエチル基である化合物
から選択される、1種又は2種以上である、請求項1に記載の化粧料。 - 前記(C)成分が、
前記一般式(1)におけるR1、R3、R4、及びR6がメチル基であり、かつ、R2及びR5が水素原子である化合物、
前記一般式(1)におけるR1、R2、R3、R4、及びR6がメチル基であり、かつ、R5が水素原子である化合物、並びに
前記一般式(1)におけるR1、R3、R4、及びR6がメチル基であり、かつ、R2及びR5がエチル基である化合物
から選択される、1種又は2種以上である、請求項2に記載の化粧料。 - 前記(C)成分が、
前記一般式(1)におけるR1、R3、R4、及びR6がメチル基であり、かつ、R2及びR5が水素原子である化合物、
前記一般式(1)におけるR1、R2、R3、R4、及びR6がメチル基であり、かつ、R5が水素原子である化合物、並びに
前記一般式(1)におけるR1、R3、R4、及びR6がメチル基であり、かつ、R2及びR5がエチル基である化合物
から選択される、1種又は2種以上である、請求項3に記載の化粧料。 - 更に(F)油分を含む、請求項1~7のいずれか一項に記載の化粧料。
- 前記化粧料の全質量に対する前記(D)成分の質量割合が、0.1質量%以上0.5質量%以下である、請求項1~7のいずれか一項に記載の化粧料。
- クリーム、日焼け止め、ファンデーション、乳液、又は美容液である、請求項1~7のいずれか一項に記載の化粧料。
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|---|---|---|---|---|
| JP2007153754A (ja) | 2005-12-01 | 2007-06-21 | Shiseido Co Ltd | 水中油型乳化組成物 |
| WO2009099193A1 (ja) * | 2008-02-08 | 2009-08-13 | Shiseido Company Ltd. | 美白剤及び皮膚外用剤 |
| WO2012124436A1 (ja) * | 2011-03-17 | 2012-09-20 | 株式会社 資生堂 | 皮膚化粧料 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007153754A (ja) | 2005-12-01 | 2007-06-21 | Shiseido Co Ltd | 水中油型乳化組成物 |
| WO2009099193A1 (ja) * | 2008-02-08 | 2009-08-13 | Shiseido Company Ltd. | 美白剤及び皮膚外用剤 |
| WO2009099192A1 (ja) * | 2008-02-08 | 2009-08-13 | Shiseido Company Ltd. | 美白剤及び皮膚外用剤 |
| JP4586108B2 (ja) | 2008-02-08 | 2010-11-24 | 株式会社資生堂 | 美白剤及び皮膚外用剤 |
| WO2012124436A1 (ja) * | 2011-03-17 | 2012-09-20 | 株式会社 資生堂 | 皮膚化粧料 |
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