CN110312503B - Oil-in-water type emulsion composition - Google Patents
Oil-in-water type emulsion composition Download PDFInfo
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- CN110312503B CN110312503B CN201780087050.XA CN201780087050A CN110312503B CN 110312503 B CN110312503 B CN 110312503B CN 201780087050 A CN201780087050 A CN 201780087050A CN 110312503 B CN110312503 B CN 110312503B
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- 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
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- 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
- A61K8/37—Esters of carboxylic acids
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
- A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
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- 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
- A61K8/60—Sugars; Derivatives thereof
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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
- A61K8/96—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution
- A61K8/97—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution from algae, fungi, lichens or plants; from derivatives thereof
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Abstract
The present invention provides an oil-in-water type emulsion composition comprising meadowfoam seed oil having uniform oil droplet particles with a small average particle diameter and a small width of particle size distribution. In more detail, there is provided an oil-in-water type emulsion composition comprising: (A) the components: white Potentilla seed oil, component (B): n-acyl glutamic acid and/or a salt thereof, component (C): a water-soluble sucrose fatty acid ester, and (D): glycerol mono-fatty acid ester.
Description
Technical Field
The present invention relates to an oil-in-water emulsion composition and the like.
Background
When an oil-in-water (O/W) emulsion composition having an aqueous phase as a continuous phase is used as an external composition such as a cosmetic, the composition is widely used as a cream, a lotion, and the like because of its good feeling of use (for example, patent documents 1 to 3 listed below, and the like).
It is known that the particle diameter of oil droplet particles, the repulsive force between oil droplet particles, and the viscosity of a continuous phase have an influence on the stability of an oil-in-water type emulsion cosmetic. For example, when the particle size of the oil droplet particles is large, the oil layer and the aqueous phase are separated over time, and therefore, in order to improve the stability of the composition, there have been performed a method using a high-pressure emulsifier such as a homogenizer and a nanoemulsifier, a D-phase emulsification method, and the like to reduce the particle size of the oil droplet particles (for example, see patent documents 4 and 5).
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2014-114230
Patent document 2: japanese laid-open patent publication No. 2015-059114
Patent document 3: japanese patent laid-open publication No. 2013-006790
Patent document 4: japanese laid-open patent publication No. 2006-089420
Patent document 5: japanese patent laid-open publication No. 2007-289074
Disclosure of Invention
Problems to be solved by the invention
The present inventors have conducted intensive studies in an attempt to develop an oil-in-water emulsion cosmetic containing meadowfoam seed oil having a low stickiness and having a moisturizing and lubricating feel, and as a result, have faced the following problems: when a water-soluble sucrose fatty acid ester or a glycerin mono-fatty acid ester is used as a surfactant, oil droplet particles having a large particle diameter and a large and uneven particle size distribution width are formed.
The present invention has been made to solve the above problems, and an object of the present invention is to provide an oil-in-water type emulsion cosmetic containing meadowfoam seed oil having uniform oil droplet particles with a small average particle size and a small particle size distribution width.
Means for solving the problems
The present inventors have conducted intensive studies to solve the above problems, and as a result, surprisingly found that: in the case of using N-acyl glutamic acid and/or a salt thereof as a surfactant in addition to the water-soluble sucrose fatty acid ester and the monoglyceride fatty acid ester, an oil-in-water type emulsion cosmetic having uniform oil droplet particles with a small average particle size of oil droplet particles and a small width of particle size distribution can be prepared. The present inventors have further studied based on the above findings, and have completed the present invention.
That is, the present invention representatively includes the subject matter described in the following items.
An oil-in-water emulsion composition comprising:
(A) the components: white chinlon seed oil,
(B) The components: n-acyl glutamic acid and/or salt thereof,
(C) The components: water-soluble sucrose fatty acid ester, and
(D) the components: glycerol mono-fatty acid ester.
The oil-in-water emulsion composition according to the above 1, wherein the component (A) is contained in an amount of 1 to 20% by mass based on the total amount of the composition.
Item 3.
The oil-in-water emulsion composition according to item 1 or 2, wherein the component (B) is contained in an amount of 0.05 to 0.5% by mass based on the total amount of the composition.
Item 4.
The oil-in-water emulsion composition according to any one of the above items 1 to 3, further comprising (E) a component: a higher alcohol.
The oil-in-water emulsion composition according to any one of the above items 1 to 4, further comprising (F) a component: hydrogenated lecithin.
Item 6.
The oil-in-water emulsion composition according to any one of the above items 1 to 5, wherein the average particle diameter of the oil droplets is 1.0 to 2.0. mu.m.
The oil-in-water emulsion composition according to any one of the above items 1 to 6, wherein a standard deviation of a particle size distribution of oil droplets is 0.20 or less.
The oil-in-water emulsion composition according to any one of claims 1 to 7, which is a cosmetic.
ADVANTAGEOUS EFFECTS OF INVENTION
The oil-in-water type emulsifier composition of the present invention contains oil droplet particles having a small particle size. Further, the oil droplet particles are present in the composition relatively uniformly with a small width of the particle size distribution. Therefore, the oil-in-water type emulsion composition of the present invention exhibits high stability with time. Therefore, it can be suitably used as, for example, cosmetics.
Drawings
Fig. 1 is a graph showing the analysis result of the particle size distribution of the oil-in-water type emulsion cosmetic of example 1.
Fig. 2 is a graph showing the analysis result of the particle size distribution of the oil-in-water type emulsion cosmetic of example 2.
Fig. 3 is a graph showing the analysis result of the particle size distribution of the oil-in-water type emulsion cosmetic of example 3.
Fig. 4 is a graph showing the analysis result of the particle size distribution of the oil-in-water type emulsion cosmetic of example 4.
Fig. 5 is a graph showing the analysis result of the particle size distribution of the oil-in-water type emulsion cosmetic of example 5.
Fig. 6 is a graph showing the analysis result of the particle size distribution of the oil-in-water type emulsion cosmetic of example 6.
Fig. 7 is a graph showing the analysis result of the particle size distribution of the oil-in-water type emulsion cosmetic of example 7.
Fig. 8 is a graph showing the analysis result of the particle size distribution of the oil-in-water type emulsion cosmetic of example 8.
Fig. 9 is a graph showing the analysis result of the particle size distribution of the oil-in-water type emulsion cosmetic of example 9.
Fig. 10 is a graph showing the analysis result of the particle size distribution of the oil-in-water type emulsion cosmetic of example 10.
Fig. 11 is a graph showing the analysis result of the particle size distribution of the oil-in-water type emulsion cosmetic of comparative example 1.
Fig. 12 is a graph showing the analysis result of the particle size distribution of the oil-in-water type emulsion cosmetic of comparative example 2.
Fig. 13 is a graph showing the analysis result of the particle size distribution of the oil-in-water type emulsion cosmetic of comparative example 3.
Fig. 14 is a graph showing the analysis result of the particle size distribution of the oil-in-water type emulsion cosmetic of comparative example 4.
Detailed Description
The present invention will be described in detail below.
The oil-in-water type emulsion composition of the present invention comprises:
(A) the components: white chinlon seed oil,
(B) The components: n-acyl glutamic acid and/or salt thereof,
(C) The components: water-soluble sucrose fatty acid ester, and
(D) the components: glycerol mono-fatty acid ester.
The oil-in-water emulsion composition of the present invention can be suitably used as a cosmetic in particular.
The white chinaroot seed oil as component (A) is a fatty oil obtained from seeds of white swamp family (Limnanthaceae alba).
The content of the component (a) in the oil-in-water emulsion composition of the present invention is not particularly limited as long as it can exhibit the moisturizing and lubricating feeling of the brassicaceae family, and is, for example, about 1 to 20% by mass, preferably about 2.5 to 17.5% by mass, and more preferably about 5 to 17.5% by mass based on the total amount of the composition.
The N-acyl glutamic acid as the component (B) is a glutamic acid derivative having a structure in which an amino group of glutamic acid is substituted with an acyl group, and N-acyl glutamate is a salt of the glutamic acid derivative. The acyl group in the N-acylglutamic acid is not particularly limited, and is preferably an acyl group derived from a saturated or unsaturated linear or branched fatty acid having 8 to 24 carbon atoms, more preferably an acyl group derived from a saturated linear or branched fatty acid having 8 to 24 carbon atoms, still more preferably an acyl group derived from a saturated linear fatty acid having 8 to 24 carbon atoms, and particularly preferably an acyl group derived from a saturated linear or more fatty acid having 12 to 24 carbon atoms. Examples of such acyl groups include: octanoyl, nonanoyl, lauroyl, myristoyl, palmitoyl, stearoyl, isostearoyl, oleoyl, and the like. In addition, examples of the salt of N-acyl glutamic acid include: alkali metal salts such as sodium salt, disodium salt and potassium salt of N-acylglutamic acid; metal salts such as aluminum salts; amine salts such as triethanolamine salts, and the like.
Specific examples of the component (B) include: N-lauroyl-L-glutamic acid, N-lauroyl-L-sodium glutamate, N-lauroyl-L-disodium glutamate, N-lauroyl-L-potassium glutamate, N-lauroyl-L-triethylamine glutamate, N-myristoyl-L-glutamic acid, N-myristoyl-L-sodium glutamate, potassium N-myristoyl-L-glutamate, N-stearoyl-L-glutamate, sodium N-stearoyl-L-glutamate, disodium N-stearoyl-L-glutamate, potassium N-stearoyl-L-glutamate, aluminum N-stearoyl-L-glutamate, and the like. Among them, sodium N-lauroyl-L-glutamate and sodium N-stearoyl-L-glutamate are preferable from the viewpoint of availability and cost.
The content of the component (B) in the oil-in-water emulsion composition of the present invention is not particularly limited as long as the effects of the present invention are exhibited, and is, for example, about 0.01 to 0.5% by mass, preferably about 0.05 to 0.4% by mass, and more preferably about 0.1 to 0.3% by mass based on the total amount of the composition.
The component (B) in the oil-in-water emulsion composition of the present invention may be used alone in 1 kind, or may be used in combination in 2 or more kinds. When 2 or more kinds are used in combination, the mixing ratio of each substance is not particularly limited and can be set as appropriate.
The water-soluble sucrose fatty acid ester as the component (C) is an ester having a structure in which a fatty acid is ester-bonded to a hydroxyl group of sucrose (sucrose). In addition, sucrose fatty acid esters exist as monoesters through octaesters depending on the number of fatty acid residues ester-bonded to 8 hydroxyl groups present in sucrose. The water-soluble sucrose fatty acid ester as the component (C) is not particularly limited as long as it is water-soluble, and examples thereof include: sucrose mono-fatty acid ester, sucrose di-fatty acid ester, sucrose tri-fatty acid ester, and the like. Among them, sucrose monofatty acid esters are preferable. The water-soluble sucrose fatty acid ester as the component (C) may be a mixture containing at least 1 selected from the group consisting of sucrose di-fatty acid ester, sucrose tri-fatty acid ester, sucrose tetra-fatty acid ester, sucrose pentafatty acid ester, sucrose hexa-fatty acid ester, sucrose heptafatty acid ester and sucrose octafatty acid ester, and sucrose mono-fatty acid ester. The content of the sucrose mono-fatty acid ester in the mixture is not particularly limited as long as the sucrose mono-fatty acid ester can exhibit water solubility, and is, for example, 40 mass% or more, preferably 50 mass% or more, more preferably 60 mass% or more, and particularly preferably 70 mass% or more.
The fatty acid in the water-soluble sucrose fatty acid ester is not particularly limited, and is preferably a saturated or unsaturated linear or branched fatty acid having 8 to 24 carbon atoms, more preferably a saturated linear or branched fatty acid having 8 to 24 carbon atoms, still more preferably a saturated linear fatty acid having 8 to 24 carbon atoms, and particularly preferably a saturated linear fatty acid having 12 to 24 carbon atoms. Examples of such fatty acids include: caprylic acid, pelargonic acid, lauric acid, myristic acid, palmitic acid, stearic acid, erucic acid, behenic acid, isostearic acid, oleic acid, and the like.
Specific examples of the sucrose fatty acid ester include: sucrose monolaurate, sucrose dilaurate, sucrose polylaurate, sucrose monostearate, sucrose distearate, sucrose tristearate, sucrose polystearate, sucrose monopalmitate, sucrose dipalmitate, sucrose tripalmitate, sucrose hexapalmitate, sucrose heptaerucate, sucrose hexaerucate, sucrose tribehenate, and the like. Among them, sucrose monostearate and sucrose monopalmitate are preferable. Specific examples of the water-soluble sucrose fatty acid ester as the component (C) include a mixture containing 40 mass% or more, preferably 50 mass% or more, more preferably 60 mass% or more, and particularly preferably 70 mass% or more of sucrose monostearate or sucrose monopalmitate.
The content of the component (C) in the oil-in-water emulsion composition of the present invention is not particularly limited as long as the effects of the present invention are exhibited, and is, for example, about 0.1 to 1.0% by mass, preferably about 0.2 to 0.9% by mass, and more preferably about 0.3 to 0.8% by mass based on the total amount of the composition.
The component (C) in the oil-in-water emulsion composition of the present invention may be used alone in 1 kind, or may be used in combination in 2 or more kinds. When 2 or more kinds are used in combination, the mixing ratio of each substance is not particularly limited and can be set as appropriate.
The monoglyceride as the component (D) is a monoester of glycerin and a fatty acid. The fatty acid in the glycerin mono fatty acid ester is not particularly limited, and is preferably a saturated or unsaturated linear or branched fatty acid having 8 to 24 carbon atoms, and more preferably a saturated or unsaturated linear or branched fatty acid having 12 to 24 carbon atoms. Examples of such fatty acids include: octanoic acid, nonanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, linoleic acid, arachidonic acid, oleic acid, and the like.
Specific examples of the component (D) include: sucrose monolaurate (lauric acid glyceride), monocaprylic acid glyceride (caprylic acid glyceride), monocaprylic acid glyceride (capric acid glyceride), monomyristic acid glyceride (myristic acid glyceride), monopalmitoyl acid glyceride (palmitic acid glyceride), monostearic acid glyceride (stearic acid glyceride), monoisostearic acid glyceride (isostearic acid glyceride), monolinolein acid glyceride (linoleic acid glyceride), monoarachidonic acid glyceride (arachidonic acid glyceride), monooleic acid glyceride (oleic acid glyceride) and the like. Among them, glyceryl stearate and glyceryl oleate are preferable.
The content of the component (D) in the oil-in-water emulsion composition of the present invention is not particularly limited as long as the effects of the present invention are exhibited, and is, for example, about 0.1 to 3.0% by mass, preferably about 0.5 to 2.5% by mass, and more preferably about 0.5 to 2.0% by mass, based on the total amount of the composition.
The component (D) in the oil-in-water emulsion composition of the present invention may be used alone in 1 kind, or may be used in combination in 2 or more kinds. When 2 or more kinds are used in combination, the mixing ratio of each substance is not particularly limited and can be set as appropriate.
Further, the oil-in-water emulsion composition of the present invention preferably contains the following components (E): a higher alcohol. In the present specification, the higher alcohol refers to an alcohol having 16 to 24 carbon atoms in the molecule. Among the higher alcohols, alcohols having 18 to 24 carbon atoms in the molecule are preferable.
Specific examples of the component (E) include: cetyl alcohol, isocetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, and the like. Among them, behenyl alcohol is preferred.
The content of the component (E) in the oil-in-water emulsion composition of the present invention is not particularly limited, and is, for example, about 0.1 to 2.0% by mass, preferably about 0.1 to 1.5% by mass, and more preferably about 0.1 to 1.0% by mass based on the total amount of the composition.
The component (E) in the oil-in-water emulsion composition of the present invention may be used alone in 1 kind, or may be used in combination in 2 or more kinds. When 2 or more kinds are used in combination, the mixing ratio of each substance is not particularly limited and can be set as appropriate.
Further, the oil-in-water emulsion composition of the present invention preferably contains the following component (F): hydrogenated lecithin. Hydrogenated lecithin is a lecithin derivative obtained by hydrogenating lecithin, and is also called hydrogenated lecithin. The lecithin is not particularly limited, and the phosphatidylcholine content is preferably 60 mass% or more, more preferably 70 mass% or more, still more preferably 80 mass% or more, and most preferably 90 mass% or more. Examples thereof include: soybean lecithin, corn lecithin, cottonseed oil lecithin, egg yolk lecithin, egg white lecithin, etc., and commercially available products such as Phospholipon 80H, Phospholipon 90H (manufactured by Lipoid Kosmetik Co., Ltd.), LIOID P100-3, LIOID P75-3 (manufactured by Lipoid Co., Ltd.), COATSOME NC-21, COATSOME NC-61 (manufactured by Nissan OilliO Group, manufactured by Nisshin Oilli Group, Ltd.), hydrogenated lecithin (Ajinomoto HEALTIHY SUPPPLY CO., manufactured by INC.) are available.
The content of the component (F) in the oil-in-water emulsion composition of the present invention is not particularly limited, and is, for example, about 0.01 to 0.2% by mass, preferably about 0.025 to 0.175% by mass, and more preferably about 0.05 to 0.15% by mass based on the total amount of the composition.
The oil-in-water emulsion composition of the present invention may contain other components in addition to the above components. The other ingredients are not particularly limited, and ingredients that can be usually blended in cosmetics can be suitably used. Examples thereof include: oils and fats other than the component (A), surfactants other than the components (B) to (D), high molecular compounds, alcohols, humectants, antioxidants, ultraviolet absorbers, preservatives, chelating agents, amino acids, saccharides, vitamins, animal and plant extracts, colorants, powders such as inorganic powders and organic powders, and pH regulators such as organic acids and inorganic acids.
Examples of the oils and fats other than the component (a) include: vegetable oil other than meadowfoam seed oil; animal oil; hydrocarbon oils such as liquid paraffin, squalane, and vaseline; silicone oils such as chain polysiloxanes, cyclic polysiloxanes, methyl trimethicones, silicone resins, and modified polysiloxanes; higher fatty acids such as lauric acid, stearic acid, oleic acid and the like; waxes such as beeswax, lanolin, and derivatives thereof; monoalkyl fatty acid esters; polyol fatty acid esters; hardened oil, and the like.
Examples of the surfactant other than the components (B) to (D) and (F) include: anionic surfactants such as fatty acid soaps, alkyl ether carboxylates, polyoxyethylene alkyl ether phosphates, and N-acyl taurates; amphoteric surfactants such as imidazoline-based amphoteric surfactants and betaine-based surfactants; nonionic surfactants such as sorbitan-based surfactants, polyglycerol fatty acid esters, propylene glycol fatty acid esters, alkyl glycosides, polyoxyethylene sorbitan-based surfactants, polyoxyethylene glycerol fatty acid esters, polyoxyethylene propylene glycol fatty acid esters, polyoxyethylene hardened castor oil derivatives, glycerol alkyl ethers, polyoxyethylene alkyl ethers, pluronic-type surfactants, and alkanolamides.
Examples of the polymer compound include: polyethylene glycol having an average molecular weight of about several tens of thousands; a cellulose-based polymer; alginic acid-based polymer; a starch-based polymer; an acrylic polymer; non-natural polymers such as vinyl polymers; plant polymers such as carrageenan, pectin, agar, starch, gum arabic, guar gum, and alginate gum (algae colloid); animal polymers such as collagen and derivatives thereof, casein, and gelatin; natural polymers such as microbial polymers including xanthan gum and gellan gum.
Examples of alcohols include: monohydric lower alcohols such as ethanol and butanol; higher alcohols such as lauryl alcohol, stearyl alcohol, behenyl alcohol and batyl alcohol; polyhydric alcohols such as ethylene glycol, propylene glycol, 1, 3-butylene glycol, and glycerin; polyol polymers such as dipropylene glycol, diglycerin, and polyglycerin; sugar alcohols such as sorbitol, maltitol, mannitol, and erythritol; lanolin alcohol, cholesterol, phytosterol and other alcohols.
Examples of the humectant include: low molecular weight polyethylene glycol, propylene glycol, 1, 3-butylene glycol, glycerin and other polyols; chondroitin sulfate, hyaluronic acid, sodium lactate, pyrrolidone carboxylate, collagen, plant extract, etc.
The average particle size of the oil droplets in the oil-in-water emulsion composition of the present invention is preferably 1.0 to 2.0. mu.m, more preferably 1.0 to 1.75. mu.m, and still more preferably 1.05 to 1.65. mu.m. The average particle diameter of the oil droplets was measured by a laser diffraction particle size distribution measuring apparatus (trade name: SALD-2200, manufactured by Shimadzu corporation).
In addition, the oil droplets in the oil-in-water type emulsion composition of the present invention preferably have a small width of particle size distribution. Specifically, the standard deviation of the particle size distribution of the oil droplets is preferably 0.20 or less, more preferably 0.19 or less, even more preferably 0.18 or less, even more preferably 0.17 or less, and particularly preferably 0.16 or less. The standard deviation of the particle size distribution of the oil droplets was measured by a laser diffraction particle size distribution measuring apparatus (trade name: SALD-2200, manufactured by Shimadzu corporation).
The form of the oil-in-water emulsion composition of the present invention is not particularly limited, and may be, for example, cream, emulsion, etc., and it can be suitably used as, for example, a cosmetic in this form.
The method for producing the oil-in-water emulsion composition of the present invention is not particularly limited, and the oil-in-water emulsion composition can be produced by a conventional method. It can be manufactured, for example, as follows. The emulsion can be produced by separately preparing an oil phase containing the component (a) and the component (D) and an aqueous phase containing the component (B) and the component (C), heating the mixture (preferably at about 70 to 90 ℃) as necessary, mixing the aqueous phase and the oil phase to emulsify the mixture, and cooling the emulsion (preferably at less than 50 ℃). In addition, an emulsifier such as a homomixer or a homogenizer may be used for the mixing.
Examples
The present invention will be described in further detail with reference to examples, but the present invention is not limited to the examples.
Preparation example: preparation of oil-in-water type emulsion cosmetic
Oil phases and water phases were prepared by mixing the ingredients in the amounts shown in examples 1 to 10 and comparative examples 1 to 4 of table 1 below. Then, the water phase and the oil phase are heated to 80-85 ℃, the oil phase is added into the water phase, a homogenizing mixer is used for emulsifying, and the temperature is cooled to about 45 ℃. Then, the neutralizing agent, alcohol and additive were added in the amounts shown in examples 1 to 10 and comparative examples 1 to 4 in table 1 below, and the mixture was uniformly stirred, thereby preparing the cosmetics of examples 1 to 10 and comparative examples 1 to 4.
After the cosmetics of examples 1 to 10 and comparative examples 1 to 4 were prepared, it was visually confirmed that all the cosmetics were emulsified.
Test examples: analysis of particle size distribution
The oil-in-water emulsion cosmetics of examples 1 to 10 and comparative examples 1 to 4 prepared in the above production examples were analyzed for the particle size distribution of oil droplets using a particle size distribution measuring apparatus (trade name: SALD-2200, manufactured by Shimadzu corporation). Fig. 1 to 14 show the analysis results of the particle size distribution of oil droplets in each oil-in-water type emulsion cosmetic. Further, the average particle diameter (median diameter) of the oil droplets and the standard deviation of the particle size distribution were calculated. The calculation results are shown in the test results column of table 1 below.
[ Table 1]
From the above results, it was confirmed that: in the cosmetics (comparative examples 1 to 4) containing meadowfoam seed oil, water-soluble sucrose fatty acid ester and glycerin mono fatty acid ester, oil droplets having an average particle size of more than 2 μm were formed, and further, oil droplet particles having a large and uneven particle size distribution were formed. On the other hand, in the cosmetics containing meadowfoam seed oil, water-soluble sucrose fatty acid ester, glycerin mono fatty acid ester and N-acyl glutamic acid (examples 1 to 10), it was confirmed that oil droplets having an average particle size of 2 μm or less were formed and oil droplet particles having a small and uniform width of particle size distribution were formed.
Claims (8)
1. An oil-in-water emulsion composition comprising:
(A) the components: white chinlon seed oil,
(B) The components: n-acyl glutamic acid and/or salt thereof,
(C) The components: water-soluble sucrose fatty acid ester, and
(D) the components: a fatty acid ester of a glycerol mono-fatty acid,
the water-soluble sucrose fatty acid ester is sucrose mono fatty acid ester.
2. The oil-in-water emulsion composition according to claim 1, wherein the component (A) is contained in an amount of 1 to 20% by mass based on the total amount of the composition.
3. The oil-in-water emulsion composition according to claim 1 or 2, wherein the component (B) is contained in an amount of 0.05 to 0.5% by mass based on the total amount of the composition.
4. The oil-in-water type emulsion composition according to claim 1 or 2, further comprising (E) an ingredient: a higher alcohol.
5. The oil-in-water emulsion composition according to claim 1 or 2, further comprising (F) ingredient: hydrogenated lecithin.
6. The oil-in-water emulsion composition according to claim 1 or 2, wherein the average particle size of the oil droplets is 1.0 to 2.0 μm.
7. The oil-in-water emulsion composition according to claim 1 or 2, wherein the standard deviation of the particle size distribution of the oil droplets is 0.20 or less.
8. The oil-in-water emulsion composition according to claim 1 or 2, which is a cosmetic.
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Also Published As
| Publication number | Publication date |
|---|---|
| SG11201907487XA (en) | 2019-09-27 |
| WO2018154631A1 (en) | 2018-08-30 |
| CN110312503A (en) | 2019-10-08 |
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