WO2012008271A1 - 油性ゲル状組成物 - Google Patents
油性ゲル状組成物 Download PDFInfo
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- WO2012008271A1 WO2012008271A1 PCT/JP2011/064146 JP2011064146W WO2012008271A1 WO 2012008271 A1 WO2012008271 A1 WO 2012008271A1 JP 2011064146 W JP2011064146 W JP 2011064146W WO 2012008271 A1 WO2012008271 A1 WO 2012008271A1
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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
- A61K8/55—Phosphorus compounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
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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
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/04—Dispersions; Emulsions
- A61K8/042—Gels
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
- A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
- A23L29/10—Foods or foodstuffs containing additives; Preparation or treatment thereof containing emulsifiers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/34—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers
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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
- A61K8/31—Hydrocarbons
-
- 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
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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
- A61K8/55—Phosphorus compounds
- A61K8/553—Phospholipids, e.g. lecithin
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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
- A61K8/72—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
- A61K8/86—Polyethers
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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
- A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/10—Dispersions; Emulsions
- A61K9/107—Emulsions ; Emulsion preconcentrates; Micelles
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/10—General cosmetic use
Definitions
- the present invention relates to a gel-forming agent and an oily gel-like composition containing the gel-forming agent and an oil phase component.
- Gel-forming agents that thicken or solidify various oil phase components such as animal and vegetable oils, mineral oils, hydrocarbons, fatty acid esters, etc. are cosmetics, pharmaceuticals, foods, paints, inks, lubricating oils, etc. Widely used in various fields.
- the performance generally required for a gel-forming agent includes that a desired oil phase component can be gel-formed with a small amount of addition, and the obtained gel is stable over a long period of time. Furthermore, depending on the application, it is required to have high safety to the human body and the environment, to generate a gel having thixotropy, and to have a good tactile sensation of the obtained gel.
- Conventional gel formers include low-molecular gel formers (1,2,3,4-dibenzylidene-D-sorbitol, 12-hydroxystearic acid, amino acid derivatives, etc.), polymer gel formers (polyacrylic acid derivatives) , Dextrin derivatives, etc.) are known.
- Low-molecular gel formers self-assemble in the oil phase components and form a huge network structure to make the oil phase components non-fluidized to form gels, while polymer gel formers make them complex. By forming an entangled network structure, gel formation of the oil phase component is caused.
- Non-patent Documents 1-6 gel formation of oil phase components by reverse string micelles has also been reported (Non-patent Documents 1-6).
- the reverse string micelle is a kind of self-assembly formed by a surfactant and is known to cause gel formation in order to form a network structure in the oil phase component. Since the reverse string micelle has a hydrophilic environment inside, it can contain a water-soluble drug, enzyme, etc., and has a feature not found in the above-mentioned gel forming agent.
- Non-patent Document 1 A three-component mixed system of lecithin / water / various oil phase components has been reported as a typical system for forming the reverse string micelle (Non-patent Document 1).
- water substitutes include ethylene glycol, formamide, glycerin, bile salts (Non-Patent Document 3), urea (Non-Patent Document 4), sucrose fatty acid ester (Non-Patent Document 5), D-ribose and D -Deoxyribose (Non-Patent Document 6) has been reported.
- lecithin forms reverse spherical micelles or reverse elliptical micelles in the oil phase component, but when a small amount of water or the like is added thereto, this hydrogen bonds to the phosphate group of lecithin, and the interface curvature of the molecular assembly is reduced. It is believed that reverse string micelle growth occurs to decrease.
- Patent Document 1 gel formation of an oil phase component by an emulsion has been reported as a method for forming an oil phase component in a gel other than the above (Patent Document 1). That is, it is a gel emulsion obtained by combining one or more surfactants such as lecithin and sucrose fatty acid ester and adding higher alcohol, glycerin and oil phase components thereto.
- surfactants such as lecithin and sucrose fatty acid ester
- 1,2,3,4-Dibenzylidene-D-sorbitol which is a low molecular gel forming agent, is an excellent compound capable of gel-forming various types of oil phase components, but it decomposes to produce benzaldehyde.
- 12-hydroxystearic acid is commercially available as a gel-forming agent for waste tempura oil, but lacks thixotropic properties.
- the gel forming agent of an amino acid derivative is hardly soluble in the oil phase component, complicated operations such as heating at a high temperature and long-time stirring are required to dissolve it.
- a dextrin derivative of a polymer gel-forming agent needs to be added at a high concentration for gel formation, and also causes a “stickiness” peculiar to a polymer and is not good in use.
- Polyacrylic acid derivatives show good thickening gel formation when added in a small amount, but when used on the skin, a “sticky feeling” peculiar to polymers is produced and the feeling of use is not good.
- Patent Document 1 is a gel emulsion in which one or more surfactants such as lecithin and sucrose fatty acid ester are combined and a higher alcohol, glycerin and an oil phase component are added thereto.
- This gel has low elasticity compared to the gels composed of the gel formers and reverse string micelles described above, so it is easy to spill and poor handling, and it is effective if either higher alcohol or glycerin is missing. There is a problem that it cannot be obtained.
- an object of the present invention is to provide a gel-forming agent that is easy to prepare and has all of high safety against living bodies and the environment, good gel-forming ability, excellent usability, and good handling properties.
- Another object of the present invention is to provide an oily gel-like composition having excellent gel stability, which comprises the gel-forming agent having the above-mentioned excellent properties and an oil phase component.
- the desired oil phase component can be added with a small amount. It is required that a gel can be formed and that the obtained gel is stable over a long period of time. Furthermore, depending on the application, it is required that the gel is extremely safe for the human body, generate a gel having thixotropy, and have a good tactile sensation. However, in the prior art, it was not possible to obtain a sufficient gel forming agent having all of them.
- the present inventors have used a three-component mixed system of lecithin / polyglycerin / oil phase component, and a gel-forming agent composed of reverse string micelles and a thickened gel. Succeeded in obtaining the composition.
- the lecithin used in the present invention is an amphoteric phospholipid having two alkyl chains, and is widely used as a food emulsifier for emulsification of dairy products, viscosity reduction of chocolate, and pharmaceutical preparations.
- polyglycerin is used as a moisturizer for cosmetics and as an emulsifier for food because of its strong hydrogen bonding ability and high safety.
- each blending range is suitable for gel formation depending on the degree of polymerization of polyglycerin. More specifically, the present inventors have found that there is a correlation between an appropriate blending amount of polyglycerol and a natural logarithm value of the degree of polymerization of the polyglycerol.
- polyglycerin having a degree of polymerization of 3 to 20 with respect to 100 parts by weight of lecithin is [6.8 Ln (X) +17] to 27 Ln (X) parts by weight (where X is the degree of polymerization of polyglycerin.
- An oily gel composition comprising 1 to 30% by weight of the blended gel forming agent and 70 to 99% by weight of the oil phase component is provided.
- the degree of polymerization of the polyglycerol is more preferably 3 to 10.
- the zero shear viscosity obtained in the viscosity / viscoelasticity measurement is 50 Pa ⁇ s or more.
- polyglycerin having a degree of polymerization of 3 to 20 with respect to 100 parts by weight of lecithin is [6.8Ln (X) +17] to 27Ln (X) parts by weight (where X is the degree of polymerization of polyglycerin).
- a blended gel-forming agent is [6.8Ln (X) +17] to 27Ln (X) parts by weight (where X is the degree of polymerization of polyglycerin).
- the polymerization degree of the polyglycerol is more preferably 3 to 10.
- oily gel-like composition referred to in the present invention refers to a gel-like composition that does not contain water or contains a very small amount (for example, 1% by weight or less, preferably 0.2% by weight or less).
- the gel-forming agent of the present invention contains lecithin and polyglycerin having a specific degree of polymerization in a specific ratio, so that the preparation is simple, the safety to the living body and the environment is high, and the gel-forming ability is excellent and the use is excellent. It has both feeling and good handling. Moreover, it is excellent also in transparency.
- the oily gel-like composition of the present invention has the above-described excellent gel former and oil phase component in a specific ratio, so that it has high safety against living bodies and the environment and is excellent in use feeling and gel stability. Excellent in properties. Moreover, it is excellent also in transparency.
- Lecithin is a lipid product mainly composed of phosphatidylcholine, widely distributed in living organisms such as natural animals, plants, and microorganisms, and is known to be contained in a large amount in liver, egg yolk, soybean, yeast and the like.
- Representative lecithin includes egg yolk lecithin, soybean lecithin and the like.
- Lecithin can be used alone or in admixture of two or more.
- a phosphatidylcholine content of about 55 to 99% by weight is preferable. Those in this range tend to be creamy, have a moderate consistency, do not flow down when applied to the skin, and have a good feeling of use.
- Natural lecithin is only in the L- ⁇ -form, but others can be used. Since natural lecithin is easily oxidized and unstable, it may be hydrogenated by a known method before use. In the present invention, such hydrogenated lecithin is also included in “lecithin”.
- Phosphatidylcholine means an ester obtained by reacting glycerol (glycerin) with at least one unsaturated fatty acid and phosphoric acid, and the proton of the phosphoric acid is substituted with choline as an amine functional group.
- phosphatidylcholine in which an unsaturated bond is hydrogenated is also included in “phosphatidylcholine”.
- phosphatidylcholine is particularly defined according to the following general formula (I).
- R 1 and R 2 independently of each other, are (corresponding) aliphatic hydrocarbon groups derived from saturated or unsaturated fatty acids having 4 to 24 carbon atoms (that is, saturated or saturated carbon atoms having 3 to 23 carbon atoms).
- Unsaturated aliphatic hydrocarbon groups which may be either linear or branched and may be substituted with one or more hydroxyl and / or amine functional groups.
- X represents a choline residue.
- the phosphatidylcholine may be one of the compounds represented by the formula (I) or a mixture of two or more.
- fatty acids corresponding to R 1 and R 2 are, for example, butyric acid, caproic acid, caprylic acid, capric acid, caproleic acid, lauric acid, laurolein. Acid, myristic acid, tyristoleic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, arachidic acid, isostearic acid, dihydroxtearic acid, and ricinoleic acid.
- Non-hydrogenated phosphatidylcholines (PC) that are suitable for the practice of the compositions of the present invention may be of “natural” or “synthetic” origin.
- Natural PC can be obtained by extraction from animal or plant sources such as soybeans, sunflowers, or eggs.
- Non-hydrogenated phosphatidylcholine obtained from natural products, for example from soybeans, is generally palmitic acid, stearic acid, palmitoleic acid, oleic acid, linoleic acid, linolenic acid, and possibly C20- Contains C22 fatty acids.
- the polyglycerin used in the present invention is produced using various methods. For example, (1) a method in which epichlorohydrin is addition-polymerized to glycerin, then dehydrochlorinated under alkaline conditions and then ring-opened with dilute sulfuric acid is repeated until the desired degree of polymerization is reached, (2) glycidol is converted to glycerin. (3) A method in which glycidol protected with a hydroxyl group is added to glycerin, followed by deprotection, and this is repeated until the desired degree of polymerization.
- Glycerin in the presence of an alkali A method of heat condensation, (5) A method of adding an allyl halide to glycerin and epoxidizing, then ring-opening with water and repeating this until an arbitrary degree of polymerization is achieved, and the most preferable production method is the method of (2) And can be suitably used as a gel-forming agent for the oily gel composition.
- the degree of polymerization of the polyglycerol used is preferably 3-20. If it is less than 3, a stable gel cannot be obtained, and if it is greater than 20, it becomes an emulsified composition and not only a transparent gel cannot be obtained, but also the gel itself cannot be obtained.
- polyglycerin having a polymerization degree of 3 to 10 is preferably used. Polyglycerin can be used alone or in combination of a plurality of different polymerization degrees.
- the gel-forming agent of the present invention comprises [6.8 Ln (X) +17] to 27 Ln (X) parts by weight of polyglycerin having a degree of polymerization of 3 to 20 with respect to 100 parts by weight of lecithin (X represents polymerization of polyglycerin). It is obtained at a ratio of The “Ln” represents a natural logarithm “log e ”.
- the average polymerization degree Xa of polyglycerin having a polymerization degree of 3 to 20 is [6.8 Ln (Xa) +17] parts by weight with respect to 100 parts by weight of lecithin. It may be in the range of ⁇ 27 Ln (Xa) parts by weight.
- the gel forming agent has a polymerization degree of 55 to 99 parts by weight (for example, 75 parts by weight) of phosphatidylcholine. It is preferable that 3 to 20 polyglycerols are blended at a ratio of [6.8 Ln (X) +17] parts by weight to 27 Ln (X) parts by weight (X indicates the degree of polymerization of polyglycerol).
- the gel-forming agent can be contained in an amount of 1 to 30% by weight, preferably 5 to 20% by weight, particularly preferably 10 to 15% by weight, based on the entire oily gel composition.
- the lecithin content in the entire oily gel composition can be calculated from the above, but is preferably in the range of 2 to 27% by weight, particularly preferably in the range of 6 to 13% by weight.
- the content of lecithin is low, poor gel formation tends to occur and a stable oily gel composition cannot be obtained.
- the content is too large, the gel forming ability and the moisturizing / water retaining effect reach a peak, so there is no merit of using a large amount and it is not economical. Therefore, it is preferable to contain in the said range.
- the content of phosphatidylcholine in the entire oily gel composition is, for example, 1.5 to 26% by weight, preferably 4 to 12% by weight.
- the content of the gel-forming agent (the total amount of lecithin and polyglycerin having a polymerization degree of 2 to 10) with respect to the entire oily gel-like composition is less than 1% by weight, gel formation is poor and a stable oily gel-like composition can be obtained. Can not. Moreover, when there is too much content of the gel formation agent with respect to the whole oil-based gel-like composition, since a gel formation power and a moisturizing and water retention effect will reach a peak, there is no merit to use in large quantities and it is not economical. Therefore, it is preferable to contain in the said range.
- the content of polyglycerin having a degree of polymerization of 3 to 20 in the entire oily gel composition can also be calculated from the above, but is preferably in the range of 0.2 to 13% by weight, preferably 1 to 6% by weight. The range of is particularly preferable. If the content of polyglycerin having a polymerization degree of 3 to 20 is small, a stable oily gel composition cannot be obtained. If the content of polyglycerin having a polymerization degree of 3 to 20 is too large, Since the moisturizing / moisturizing effect reaches its peak, there is no merit of using a large amount and it is not economical.
- Oil phase component used in the present invention is mainly composed of polar oil alone, a mixture of polar oil and nonpolar oil, or nonpolar oil.
- Nonpolar oils include hydrocarbons such as squalane, petrolatum, liquid paraffin, chain or cyclic silicone oils, etc.
- polar oils include fats such as olive oil, waxes such as lanolin, Esters such as isopropyl myristate, decyl oleate, glycerin tri-2-ethylhexanoate [esters of fatty acids and alcohols having 8 or more carbon atoms (preferably 8 to 25 carbon atoms), etc.], oleic acid, lauric acid Higher fatty acids such as [fatty acids having 12 or more carbon atoms (preferably, 12 to 25 carbon atoms)], higher alcohols solid at room temperature such as cetanol [12 or more carbon atoms (preferably 12 to 25 carbon atoms) Alcohol etc.].
- the content of these oil phase components is in the range of 70 to 99% by weight based on the total amount of the oily gel composition, and is blended alone or in combination.
- the content of the oil phase component is preferably 80 to 95% by weight, more preferably 85 to 90% by weight, based on the total amount of the oily gel composition.
- Lecithin itself is effective as a cosmetic that softens aged keratin by spreading to every corner of the skin, but vitamins B and vitamins are added to enhance the effect as a cosmetic for skin.
- Components such as E and various fragrances can be added.
- ascorbic acid is particularly effective.
- the pH value of ascorbic acid is about 2, and when this is added, the pH value of the cosmetic is lowered, the keratolytic action is exhibited, and the old keratin is removed.
- an ascorbic acid derivative such as ascorbyl palmitate can be used.
- a component having antibacterial action such as hinokitiol, fucoidan, salicylic acid
- fungi and bacteria present in the keratin.
- a plant anti-inflammatory / moisturizing component such as glutyrrhizic acid
- a sedative / moisturizing effect can be expected in a state where the cured keratin is lacerated and inflamed.
- powders such as a silica, a silicon powder, an alkyl acrylate copolymer, can also be added.
- oily gel composition of the present invention in addition to the above-described components, components used in ordinary general cosmetics can be blended.
- components used in ordinary general cosmetics can be blended. Examples include fragrances, pigments, preservatives, antioxidants, anti-inflammatory agents, ultraviolet absorbers, ultraviolet reflectors, pH adjusters, and various other medicinal ingredients such as hyaluronic acid, allantoin, and the like. Vitamins, amino acids, placenta extract, and the like, which can be used alone or in combination.
- the content of the components other than the gel forming agent and the oil phase component in the oily gel composition of the present invention is usually 29% by weight or less (for example, 0.1 to 29% by weight), preferably 20% by weight or less ( For example, 0.1 to 20% by weight), more preferably 10% by weight or less (for example, 0.1 to 10% by weight).
- the oily gel composition obtained in the present invention is stable for a long period of, for example, 3 months or more. Further, since it was confirmed that the rheology measurement has an appropriate elasticity, it is judged that the liquid is difficult to drip and the handling property is good. Furthermore, since it has thixotropic properties, it has good elongation when applied to, for example, skin.
- the zero shear viscosity required in the measurement of the viscosity and viscoelasticity of the oily gel-like composition of the present invention is preferably 50 Pa ⁇ s or more, particularly 100 Pa ⁇ s, from the viewpoints of gel stability, feel of the gel, feeling of use, handleability and the like. The above is preferable.
- the upper limit of the zero shear viscosity is not particularly limited and varies depending on the application, but is, for example, 2000 Pa ⁇ s, preferably 1000 Pa ⁇ s.
- Examples 1 to 11 and Comparative Examples 1 to 26 Lecithin, polyglycerin (or glycerin) and n-decane (oil phase component) were mixed in the ratios shown in Tables 2 to 7 to prepare an oily gel composition.
- the rheology of the obtained oily gel composition was measured to evaluate the formation of a thickening gel and the transparency of each composition was evaluated.
- the results are shown in Tables 2-7.
- the numerical values in the table represent the blending ratio (wt%) of each component.
- the reagents, preparation methods, and evaluation methods used are shown below.
- poly (20) glycerin indicates polyglycerin having a polymerization degree of 20
- poly (40) glycerin indicates polyglycerin having a polymerization degree of 40.
- Soy lecithin was used as lecithin.
- Soy lecithin was from Avanti Polar Lipids, Inc.
- glycerin and n-decane special grades from Kanto Chemical Co., Ltd. were used as they were.
- Various polyglycerin used the product of Daicel Chemical Industries, Ltd. as it is.
- ⁇ Preparation method> The required amount of lecithin, polyglycerin or glycerin and n-decane was sealed in a bottle and stirred overnight using a magnetic stirrer. Thereafter, the sample was allowed to stand for several days in a constant temperature bath at 25 ° C. to reach equilibrium, thereby preparing a sample.
- FIG. 1 shows lecithin / tetraglycerin / n-decane system (lecithin: 10% by weight, tetraglycerin: 1.0-3.5% by weight, n-decane: remaining amount) (Examples 1-2, Comparative Example)
- the rheological measurement results of 2-5) are shown.
- the numbers in the figure are tetraglycerin concentrations (% by weight).
- the vertical axis represents viscosity ⁇ (Pa ⁇ s), and the horizontal axis represents shear rate (s ⁇ 1 ). As the shear rate is increased, the viscosity decreases, indicating that non-Newtonian flow is exhibited.
- FIG. 2 shows the rheological measurement results of the lecithin / glycerin / n-decane system (lecithin: 10 wt%, glycerin: 0.5 to 1.5 wt%, n-decane: remaining amount) (Comparative Examples 18 to 21). Indicates. The numbers in the figure are glycerin concentrations (% by weight). The vertical axis represents viscosity ⁇ (Pa ⁇ s), and the horizontal axis represents shear rate (s ⁇ 1 ). It can be seen that the viscosity is lower than in the case of FIG. 1 (when tetraglycerin is used).
- the viscosity ⁇ at this time can be handled as zero shear viscosity ⁇ 0.
- the viscosity was a constant value when the shear rate was 0.1 (s -1 ) or less, and this value was defined as zero shear viscosity ⁇ 0.
- the measured values of zero shear viscosity of each composition are shown in Table 1.
- the numbers below the lecithin, (poly) glycerin and n-decane columns in the table indicate the content (% by weight) in the composition.
- the numbers below the column of the degree of glycerin polymerization indicate zero shear viscosity ⁇ 0 (Pa ⁇ s) when (poly) glycerin of each degree of glycerin polymerization is used.
- the gel-forming agent and thickening gel-like composition characterized by the reverse string micelle obtained in the present invention are extremely safe for the human body and the environment, cosmetics, pharmaceuticals, foods, detergents, It can be used as various products exhibiting a gel form at room temperature as odorants, bathing agents, fragrances, deodorants and the like.
- cosmetics include creams, emulsions, lotions, cleansing agents, bath cosmetics, moisturizing cosmetics, blood circulation promoting / massaging agents, pack cosmetics, hair cosmetics, and the like.
- pharmaceuticals include ointments, molded cataplasms, sustained-release preparation bases, transdermal absorption preparations, drug delivery system carriers, electrophoresis gels, and the like.
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Abstract
Description
本発明の他の目的は、上記優れた特性を有するゲル形成剤と油相成分からなるゲル安定性に優れる油性ゲル状組成物を提供することにある。
本発明の油性ゲル状組成物は、上記の優れたゲル形成剤と油相成分を特定の割合で有するので、生体や環境に対して高い安全性を有するとともに、使用感に優れる上、ゲル安定性に優れる。また、透明性にも優れる。
レシチンは、ホスファチジルコリンを主成分とする脂質製品であり、天然の動物、植物、微生物など生体に広く分布するもので、肝臓、卵黄、大豆、酵母等に多く含まれることが知られている。代表的なレシチンとして、卵黄レシチン、大豆レシチンなどが挙げられる。レシチンは単独で又は2種以上を混合して用いることができる。レシチンとしては、ホスファチジルコリンの含有量が55~99重量%程度のものが好ましい。この範囲のものは、クリーム状となりやすく、適度の稠度があり、肌につけたときに流れ落ちたりせず、使用感が良好である。天然のレシチンは、L-α-形のみであるが、それ以外のものも使用可能である。天然のレシチンは酸化されやすく、不安定であるので、使用に際しては、公知の方法により水素添加しておけばよい。本発明においては、このような水素添加されたレシチンも「レシチン」に含まれる。
本発明に用いられるポリグリセリンは様々な方法を用いて製造される。例えば、(1)エピクロルヒドリンをグリセリンに付加重合した後、アルカリ条件下で脱塩化水素閉環し、次いで希硫酸で開環する操作を目的の重合度に達するまで繰り返す方法、(2)グリシドールをグリセリンに付加する方法、またこれに関連して(3)水酸基を保護したグリシドールをグリセリンに付加した後、脱保護をし、これを任意の重合度になるまで繰り返す方法、(4)グリセリンをアルカリ存在下熱縮合させる方法、(5)グリセリンにハロゲン化アリルを付加させエポキシ化後、水で開環し、これを任意の重合度になるまで繰り返す方法、最も好ましい製造方法は(2)の方法であり、当該油性ゲル状組成物組成物のゲル形成剤として好適に用いることができる。
本発明のゲル形成剤は、レシチン100重量部に対して、重合度3~20のポリグリセリンを[6.8Ln(X)+17]重量部~27Ln(X)重量部(Xはポリグリセリンの重合度を示す)の割合で配合して得られる。前記「Ln」は自然対数「loge」を表す。
本発明で用いる油相成分は、極性油のみ、あるいは極性油と非極性油の混合物、あるいは非極性油を主成分とする。非極性油としては、スクワラン、ワセリン、流動パラフィン等の炭化水素類、鎖状または環状のシリコーン油等を挙げることができ、極性油の例として、オリーブ油等の油脂類、ラノリン等のロウ類、ミリスチン酸イソプロピル、オレイン酸デシル、トリ-2-エチルヘキサン酸グリセリン等のエステル類[炭素数8以上(好ましくは、炭素数8~25)の脂肪酸とアルコールとのエステル等]、オレイン酸、ラウリン酸等の高級脂肪酸類[炭素数12以上(好ましくは、炭素数12~25)の脂肪酸等]、セタノール等の常温で固体の高級アルコール類[炭素数12以上(好ましくは、炭素数12~25)のアルコール等]などを挙げることができる。これら油相成分の含有量は、油性ゲル状組成物全量に対し、70~99重量%の範囲で、単独あるいは組み合わせて配合される。油相成分の含有量が70重量%より低濃度ではゲル形成剤の量が多くなりすぎ、また、99重量%を越えるとゲルの安定性が悪くなり、さらに経済的でないことから上記範囲が好ましい。油相成分の含有量は、油性ゲル状組成物全量に対して、80~95重量%が好ましく、85~90重量%がより好ましい。
レシチンは、それ自体が皮膚の角質の隅々まで行き渡って、老化した角質を軟質化する化粧料として効果的なものであるが、さらに皮膚用化粧料としての効果を高めるため、ビタミンB、ビタミンE等や、各種香料等の成分を添加しておくことができる。添加成分としては、アスコルビン酸が特に効果的である。アスコルビン酸のpH値は2程度であり、これを添加すると、化粧料のpH値が低下するとともに、角質溶解作用が発揮され、古い角質が除去される。アスコルビン酸をより安定して配合するために、パルミチン酸アスコルビル等のアスコルビン酸誘導体を使用することができる。また、ヒノキチオールやフコイダン、サリチル酸等の抗菌作用をもつ成分を添加すれば、角質に存在する真菌や細菌などに対応することも可能である。さらに、グルチルリチン酸等の植物性消炎/保湿成分を配合しておくと、硬化した角質が裂傷して炎症を起こしている状態における鎮静/保湿作用を期待することができる。また、べたつきを防止するため、シリカ、シリコンパウダー、アクリル酸アルキルコポリマー等の粉末を添加することもできる。
レシチンとポリグリセリン(又は、グリセリン)とn-デカン(油相成分)とを、表2~7に示す割合で混合して油性ゲル状組成物を調製した。得られた油性ゲル状組成物のレオロジー測定を行い、増粘度ゲル形成の評価を行うとともに、各組成物の透明度を評価した。その結果を表2~7に示す。表中の数値は各成分の配合割合(重量%)を表す。用いた試薬、調製方法、評価方法を下記に示す。なお、表中、ポリ(20)グリセリンは重合度20のポリグリセリンを示し、ポリ(40)グリセリンは重合度40のポリグリセリンを示す。
レシチンとして大豆レシチンを用いた。大豆レシチンはAvanti Polar Lipids,Incのものを使用した。グリセリンおよびn-デカンは関東化学(株)の特級品をそのまま使用した。各種ポリグリセリンはダイセル化学工業(株)の製品をそのまま使用した。
必要量のレシチン、ポリグリセリン或いはグリセリンおよびn-デカンをボトルに封入し、マグネティクスターラーを用いて一晩撹拌した。その後、25℃の恒温槽中で数日間静置して平衡に到達させ試料とした。
実施例及び比較例で得られた各組成物の評価を以下の方法で行った。
(1)レオロジー測定
コーンプレートセンサー(直径60mmでコーン角1°、直径35mmでコーン角1°、2°、4°を使用)とペルチェ温度コントローラーを装着した粘度・粘弾性測定装置(RheoStress600、HAAKE社製)を用いて行った。測定は全て25℃条件下、定常流粘度測定モードで実施し、せん断速度を対数きざみで0.001~100(s-1)まで変化させて粘度を測定し、粘度曲線を得た。また各プロットは装置のトルク値変動が5%範囲に収まり、データが安定した時点での値を採用した。
レシチンとポリグリセリン(又は、グリセリン)とn-デカンとを、表1に示す割合で混合して油性ゲル状組成物を調製し、得られた油性ゲル状組成物のレオロジー測定を行い、各組成物のゼロシア粘度η0を、レオロジー測定で得られる粘度曲線から求めた。即ちせん断速度が限りなくゼロに近い領域においては非ニュートン流体であっても、ニュートン流体に近似できる領域があり、その領域における粘度は変動がなく、ある一定の値を示す。このときの粘度ηはゼロシア粘度η0として取り扱うことができる。せん断速度が0.1(s-1)以下で粘度は一定の値となり、その値をゼロシア粘度η0とした。各組成物のゼロシア粘度測定値を表1に示す。表中のレシチン、(ポリ)グリセリン、n-デカンの欄の下方の数字は組成物中の含有量(重量%)を示す。グリセリン重合度の欄の下方の数字は、各グリセリン重合度の(ポリ)グリセリンを用いたときのゼロシア粘度η0(Pa・s)を示す。
実施例1~11、比較例1~26で得られた油性ゲル状組成物について、上記と同様にして、ゼロシア粘度η0(Pa・s)を求めた。増粘度ゲル形成(増粘ゲル化)の評価は、このゼロシア粘度η0(Pa・s)に基づき、以下のように判定した。結果を表2~7に示す。
◎:ゼロシア粘度η0が100Pa・s以上
○:ゼロシア粘度η0が50Pa・s以上、100Pa・s未満
×:ゼロシア粘度η0が50Pa・s未満
実施例1~11、比較例1~26で得られた油性ゲル状組成物について、透明度を目視により以下のように判定した。結果を表2~7に示す。
◎:透明である
○:半透明である
△:白濁している
×:二相分離している
Claims (5)
- レシチン100重量部に対して重合度3~20のポリグリセリンを[6.8Ln(X)+17]重量部~27Ln(X)重量部(但し、Xはポリグリセリンの重合度を示す)配合したゲル形成剤1~30重量%と、油相成分70~99重量%とからなる油性ゲル状組成物。
- ポリグリセリンの重合度が3~10である請求項1記載の油性ゲル状組成物。
- 粘度・粘弾性測定において求められるゼロシア粘度が50Pa・s以上である請求項1又は2記載の油性ゲル状組成物。
- レシチン100重量部に対して重合度3~20のポリグリセリンを[6.8Ln(X)+17]重量部~27Ln(X)重量部(但し、Xはポリグリセリンの重合度を示す)配合されたゲル形成剤。
- ポリグリセリンの重合度が3~10である請求項4記載のゲル形成剤。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/810,247 US20130116212A1 (en) | 2010-07-16 | 2011-06-21 | Oil-based gel-like composition |
| EP11806602.6A EP2594254A1 (en) | 2010-07-16 | 2011-06-21 | Oil-based gel-like composition |
| KR1020137003885A KR20130041946A (ko) | 2010-07-16 | 2011-06-21 | 유성 겔상 조성물 |
| CN2011800347986A CN103118659A (zh) | 2010-07-16 | 2011-06-21 | 油性凝胶状组合物 |
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| JP2010161255A JP2012020979A (ja) | 2010-07-16 | 2010-07-16 | 油性ゲル状組成物 |
| JP2010-161255 | 2010-07-16 |
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| US (1) | US20130116212A1 (ja) |
| EP (1) | EP2594254A1 (ja) |
| JP (1) | JP2012020979A (ja) |
| KR (1) | KR20130041946A (ja) |
| CN (1) | CN103118659A (ja) |
| WO (1) | WO2012008271A1 (ja) |
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| JP6085454B2 (ja) * | 2012-11-29 | 2017-02-22 | 株式会社ミルボン | 洗浄剤 |
| JPWO2014112280A1 (ja) * | 2013-01-17 | 2017-01-19 | 学校法人日本大学 | 油性組成物及び増粘又はゲル形成剤 |
| JP7769329B2 (ja) * | 2021-09-02 | 2025-11-13 | 学校法人日本大学 | 油性ゲル状組成物 |
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| JPH054911A (ja) | 1991-06-27 | 1993-01-14 | Pola Chem Ind Inc | 非水ゲル化粧料 |
| JP2006069979A (ja) * | 2004-09-03 | 2006-03-16 | Taiyo Kagaku Co Ltd | 化粧料用組成物及び化粧料 |
| JP2006176423A (ja) * | 2004-12-21 | 2006-07-06 | Kose Corp | ゲル状メイクアップ化粧料 |
| JP2007314442A (ja) * | 2006-05-24 | 2007-12-06 | Shiseido Co Ltd | 水中油型乳化化粧料 |
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| US3637774A (en) * | 1969-11-03 | 1972-01-25 | Vigen K Babayan | Process for preparation and purification of polyglycerols and esters thereof |
| DE19641672A1 (de) * | 1996-10-10 | 1998-04-16 | Beiersdorf Ag | Kosmetische oder dermatologische Zubereitungen auf der Basis von ethylenoxidfreien und propylenoxidfreien Emulgatoren zur Herstellung von Mikroemulsionsgelen |
| CN1289058C (zh) * | 2001-11-09 | 2006-12-13 | 日清奥利友集团株式会社 | 凝胶状组合物 |
| US6931888B2 (en) * | 2003-02-07 | 2005-08-23 | Ferro Corporation | Lyophilization method and apparatus for producing particles |
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- 2011-06-21 EP EP11806602.6A patent/EP2594254A1/en not_active Withdrawn
- 2011-06-21 CN CN2011800347986A patent/CN103118659A/zh active Pending
- 2011-06-21 WO PCT/JP2011/064146 patent/WO2012008271A1/ja not_active Ceased
- 2011-06-21 US US13/810,247 patent/US20130116212A1/en not_active Abandoned
- 2011-06-21 KR KR1020137003885A patent/KR20130041946A/ko not_active Withdrawn
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| JP2012020979A (ja) | 2012-02-02 |
| EP2594254A1 (en) | 2013-05-22 |
| KR20130041946A (ko) | 2013-04-25 |
| CN103118659A (zh) | 2013-05-22 |
| US20130116212A1 (en) | 2013-05-09 |
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