JP2018052875A - Emulsion cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an emulsion cosmetic having excellent storage stability while imparting a springy feeling.SOLUTION: An emulsion cosmetic contains the following components A, B, C, and D. The content of the component A is 0.2-3.5 mass%, the content of the component B is 0.08 mass% or more and the content of the component C is 0.13-0.4 mass%; the mass ratio of the component B to the component A (B/A) is 0.03-0.35, and the mass ratio of the component C to the component A (C/A) is 0.045 or more. Component A: starch aluminium octenyl succinate; component B: xanthan gum; component C: carboxyvinyl polymer and/or alkyl-modified carboxyvinyl polymer; and component D: water.SELECTED DRAWING: None

Description

  The present invention relates to an emulsified cosmetic.

  Cosmetics that give the skin a firm feeling can be said to be one of the types of cosmetics that are required by the user because the user can feel a certain level of comfort and produce a high-quality feeling. 2. Description of the Related Art Conventionally, emulsified cosmetics that impart firmness to the skin are known that contain polyethylene glycol (PEG) or higher alcohols (Patent Documents 1 and 2).

JP 2012-197253 A Japanese Patent Laid-Open No. 2005-53879

  However, when PEG is used, it tends to flow out of the skin, and there is insufficient tension, and when higher alcohol is used, the agent thickens over time, and the storage stability of the preparation is not good. I understood.

  The subject of this invention is providing the emulsified cosmetics excellent in storage stability, providing the firmness.

That is, the present invention
Contains the following component A, the following component B, the following component C, and the following component D,
The content of the component A is 0.2 to 3.5% by mass, the content of the component B is 0.08% by mass or more, and the content of the component C is 0.13 to 0.4% by mass. %, The mass ratio (B / A) of the component B to the component A is 0.03 to 0.35, and the mass ratio (C / A) of the component C to the component A is 0.045 or more. The present invention relates to an emulsified cosmetic.
Component A: Aluminum starch octenyl succinate Component B: Xanthan gum Component C: Carboxyvinyl polymer and / or alkyl-modified carboxyvinyl polymer Component D: Water

  ADVANTAGE OF THE INVENTION According to this invention, the emulsified cosmetics excellent in storage stability can be provided, providing a firm feeling. In addition, the above-mentioned “feel of elasticity” refers to a feeling that the skin is stretched.

  The emulsified cosmetic of the present invention contains components A to D.

  The inventors of the present invention have found that emulsified cosmetics that give a firm feeling can be produced by using component A of starch aluminum octenyl succinate in a hydrated state. However, it was found that when the emulsified cosmetic containing component A was stored at a low temperature (5 ° C. or lower), the elasticity of the emulsified cosmetic was increased to become jelly and the stability was lowered. This phenomenon is presumed to be caused by starch aging. Therefore, the present inventors have applied the xanthan gum of component B and the carboxyvinyl polymer (or alkyl-modified carboxyvinyl polymer) of component C to emulsified cosmetics from a wide variety of components that can be used in the cosmetics field. The present inventors have found that the low temperature stability of emulsified cosmetics is improved. The mechanism for improving storage stability is not clear, but the application of such ingredients forms a gel network (intercalation), thereby suppressing hydrogen bonding between starch molecules, resulting in structural changes at low temperatures. This is presumed to be due to the fact that it was able to be suppressed.

  Component A is “starch aluminum octenyl succinate”. By component A, the effect which gives a firm feeling to the skin which apply | coated the emulsified cosmetics is exhibited. The mechanism by which the firmness can be obtained is not clear, but it is presumed that water is evaporated after application of the emulsified cosmetic and a film made of component A is formed on the skin.

  In the emulsified cosmetic of the present invention, component A exists in a hydrated state. Examples of the method for bringing component A into a hydrated state include a method of heating starch aluminum octenyl succinate together with water. By heating with water, the structural change of component A occurs, and the hydrophobic powder changes to hydrophilic and becomes hydrated. The temperature in the heating is preferably 60 ° C. or higher, more preferably 65 to 90 ° C., and further preferably 70 to 85 ° C.

  Starch aluminum octenyl succinate is a starch derivative obtained by esterifying starch with octenyl succinic acid and adding an aluminum salt. Examples of the starch constituting the starch aluminum octenyl succinate include corn starch. Component A includes corn starch aluminum octenyl succinate. As Component A, a commercially available product can be used. As a commercial item of component A, “DRY-FLO PURE” (manufactured by AKZONOBEL), “DRY-FLO PC” (manufactured by NATIONAL STARCH and CHEMICAL), and “Octier” (manufactured by Nissho Chemical Co., Ltd.) can be mentioned.

  The content of component A in 100% by mass of the emulsified cosmetic of the present invention is 0.2% by mass or more, preferably 0.3% by mass or more, more preferably from the viewpoint of imparting a firm feeling to the skin. 0.5% by mass or more, and 3.5% by mass or less, preferably 3.0% by mass or less, more preferably 2.5% by mass from the viewpoint of suppressing the occurrence of application residue when applied to the skin. It is as follows. In addition, content of the component A is the total amount of all the components A contained in the emulsified cosmetics of this invention.

  Component B is “xanthan gum”. Component B, when used in combination with Component C, exhibits the effect of imparting low temperature stability to the emulsified cosmetic. Xanthan gum is a chain polysaccharide composed of repeating units of glucose 2 molecules and mannose 2 molecules glucuronic acid.

  As Component B, a commercially available product can be used. Examples of commercially available products of Component B include “Echo Gum T” (manufactured by DSP Gokyo Food & Chemical Co., Ltd.), “Nom Coat ZZ” (manufactured by Nisshin Oilio Group Co., Ltd.), and the like.

  The content of Component B in 100% by mass of the emulsified cosmetic of the present invention is 0.08% by mass or more, preferably 0.1% by mass or more from the viewpoint of low-temperature stability, and is sticky or applied to the skin. From the viewpoint of suppressing the occurrence of coating dust at the time, the content is preferably 0.5% by mass or less, more preferably 0.3% by mass or less, and still more preferably 0.2% by mass or less.

  The mass ratio (B / A) of component B to component A in the emulsified cosmetic of the present invention is 0.03 from the viewpoint of preventing low-temperature stability from decreasing and making the emulsified cosmetic highly elastic in a jelly shape. Above, preferably 0.035 or more, more preferably 0.04 or more, and the emulsified cosmetic is in a non-uniform state (a mormorous state: a state in which a highly elastic portion is mixed), and the coating feel is lowered. From the viewpoint of preventing this, it is 0.35 or less, preferably 0.3 or less.

  Component C is “carboxyvinyl polymer and / or alkyl-modified carboxyvinyl polymer”. That is, component C is one or both of a carboxyvinyl polymer and an alkyl-modified carboxyvinyl polymer. Component C, when used in combination with Component B, exhibits the effect of imparting low temperature stability to the emulsified cosmetic.

  The carboxyvinyl polymer is mainly a polymer of acrylic acid, and the alkyl-modified carboxyvinyl polymer is mainly a copolymer of acrylic acid and alkyl methacrylate. Component C may use only 1 type and may use 2 or more types.

  The carboxyvinyl polymer and the alkyl-modified carboxyvinyl polymer can be easily obtained as commercial products. Preferred commercially available carboxyvinyl polymers include, for example, “Carbopol 934”, “Carbopol 940”, “Carbopol 941”, “Carbopol 980”, “Carbopol 981”, “Carbopol 1342”, “Carbopol”. "Pole 2984", "Carbopole Ultrez 10", "Carbopole ETD 2050" (all Japan Lubrizol Corporation); "AQUPEC HV-501", "AQUPEC HV-504", "AQUPEC HV-505", "Hibis Wako 104 ”,“ Hibis Wako 105 ”(both Wako Pure Chemical Industries, Ltd.) and the like. Preferred examples of commercially available alkyl-modified carboxyvinyl polymers include, for example, “PEMULEN TR-1”, “PEMULEN TR-2”, “Carbopol ETD 2020”, “Carbopol ULTREZ 20” (all Nippon Lubrizol Corporation). Etc.

  The content of component C in 100% by mass of the emulsified cosmetic of the present invention is 0.13% by mass or more, preferably 0.15% by mass or more from the viewpoint of low-temperature stability. From the viewpoint of suppressing the coating feel from being lowered due to a non-uniform state (boiled state: a state in which a highly elastic portion is mixed), it is 0.4% by mass or less, preferably 0.3% by mass or less. It is. In addition, content of the component C is the total amount of all the components C contained in the emulsified cosmetics of this invention.

  The mass ratio (C / A) of component C to component A in the emulsified cosmetic of the present invention is 0.045 or more, preferably 0.05 or more, more preferably 0.08, from the viewpoint of low-temperature stability. From the viewpoint of coating feel, 0.5 or less is preferable.

  Component D is “water”. Component D has a role as a medium for emulsified cosmetics for forming an emulsified system. By making cosmetics into an emulsifying system, component A can be made into a hydrated state, and the elasticity imparting effect to the skin by component A is exhibited.

  The content of component D in 100% by mass of the emulsified cosmetic of the present invention is preferably 40.0% by mass or more, more preferably 50.0% by mass or more, and further preferably 60.0% by mass or more. 95.0 mass% or less is preferable from a viewpoint of containing the component of this, More preferably, it is 90.0 mass% or less.

  The emulsified cosmetic of the present invention may further contain “phospholipid” as component E. By using Component E, not only emulsification is promoted, but also a soft touch can be imparted to the skin. Therefore, the emulsified cosmetic of the present invention preferably further contains Component E.

  Component E is a complex lipid containing a phosphate residue, and includes natural phospholipids, synthetic phospholipids, hydrogenated phospholipids in which unsaturated carbon chains of naturally derived phospholipids are saturated with hydrogen, and the like. Examples of the phospholipid include phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylinositol, lysophosphatidylcholine, sphingomyelin, egg yolk lecithin, soybean lecithin, and the like; dilauroylphosphatidylcholine, dimyristoylphosphatidylcholine, dipalmitoylphosphatidylcholine, Examples include synthetic phospholipids such as stearoyl phosphatidylcholine, dioleoylphosphatidylcholine, palmitoyl oleoylphosphatidylcholine; hydrogenated phospholipids such as hydrogenated soybean lecithin, hydrogenated egg yolk lecithin, hydrogenated phosphatidylcholine, and hydrogenated phosphatidylserine. Among these, from the viewpoint of excellent storage stability, hydrogenated phospholipid is preferable, and hydrogenated soybean lecithin is more preferable. Component E may use only 1 type and may use 2 or more types.

  A commercially available product can be used as component E. Commercially available products of hydrogenated soybean lecithin include, for example, “COATSOME NC-61” (manufactured by NOF Corporation), “NIKKOL recinol S-10” (manufactured by Nikko Chemicals), “Basis LP-20H” (Nisshin Oillio Group) Etc.).

  The content of component E in 100% by mass of the emulsified cosmetic of the present invention is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, and still more preferably 0.5% by mass from the viewpoint of improving the coating feel. It is preferably 5.0% by mass or less, more preferably 3.5% by mass or less, and still more preferably 2.5% by mass or less from the viewpoint of discoloration over time and suppression of odor generation. In addition, content of the component E is the total amount of all the components E contained in the emulsified cosmetics of this invention.

  The emulsified cosmetic composition of the present invention may further contain “glyceryl monostearate and / or sorbitan monostearate” as component F. The use of component F is preferable because the emulsification can be further stabilized. In particular, the combined use of Component F and Component E is preferable because the emulsification by Component E can be further stabilized.

  The content of component F in 100% by mass of the emulsified cosmetic of the present invention is preferably 0.1% by mass or more, more preferably 0.2% by mass or more from the viewpoint of improving emulsification stability. From a viewpoint, 3.0 mass% or less is preferable, More preferably, it is 2.5 mass% or less, More preferably, it is 2.0 mass% or less.

  The emulsified cosmetic of the present invention contains an oil agent in addition to the components A to F in order to make the dosage form an emulsifying system. Although the said oil agent is not specifically limited, For example, higher alcohol, a higher fatty acid, fats and oils, hydrocarbon oil, ester oil, silicone oil, wax etc. are mentioned.

  Specific examples of the oils include higher alcohols such as lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, oleyl alcohol, lanolin alcohol, behenyl alcohol, cetostearyl alcohol; lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid Higher fatty acids such as behenic acid, undecylenic acid, lanolinic acid, isostearic acid; palm oil, palm oil, hydrogenated palm oil, avocado oil, sesame oil, olive oil, kukui nut oil, grape particle oil, safflower oil, almond oil, corn Oils, cottonseed oil, sunflower seed oil, grape seed oil, hazelnut oil, macadamia nut oil, meadow foam oil, rosehip oil, etc .; olefin oligomer, light liquid isoparaffin, squalane Hydrocarbon oils such as liquid paraffin, liquid isoparaffin, petrolatum; ethyl oleate, isopropyl myristate, isopropyl palmitate, myristyl myristate, cetyl palmitate, oleyl oleate, octyldodecyl myristate, octyldodecyl oleate, ethyl isostearate , Isopropyl isostearate, cetyl 2-ethylhexanoate, cetostearyl 2-ethylhexanoate, glyceryl tri-2-ethylhexanoate, glyceryl tri (capryl / capric acid), glyceryl triisopalmitate, penta 2-ethylhexanoate Erythritol, isocetyl octoate, isostearyl octoate, isocetyl isostearate, octyldodecyl isostearate, octyl dimethyloctanoate Ester oil such as sil, propylene glycol isostearate; dimethicone, methylpolysiloxane, highly polymerized methylpolysiloxane, methylphenylpolysiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, Examples include silicone oils such as dodecamethylcyclohexasiloxane, methylcyclopolysiloxane, alcohol-modified silicone, alkyl-modified silicone, amino-modified silicone, and epoxy-modified silicone; waxes such as jojoba oil and beeswax. Only 1 type may be used for an oil agent and 2 or more types may be used for it.

  Although content of the oil agent in 100 mass% of emulsified cosmetics of this invention is not specifically limited, From a viewpoint of providing an emollient effect, 2.0 mass% or more is preferable and 3.0 mass% or more is more preferable. On the other hand, from the viewpoint of stickiness suppression, the content is preferably 30.0% by mass or less, and more preferably 20.0% by mass or less. In addition, content of an oil agent is a total amount of all the oil agents contained in the emulsified cosmetics of this invention.

  The emulsified cosmetic of the present invention may contain an emulsifier other than Component E (abbreviated as “other emulsifier”). Although it does not specifically limit as said other emulsifier, A nonionic emulsifier is preferable. “Other emulsifiers” may be used alone or in combination of two or more.

  Examples of the “other emulsifiers” include sorbitan fatty acid ester, glycerin fatty acid ester, castor oil, hydrogenated castor oil, and alkylene oxide adducts thereof, polyoxyethylene sorbitan fatty acid ester, polyglycerin fatty acid ester, polyoxyalkylene alkyl ether, poly Oxyalkylene fatty acid ester, polyoxyalkylene alkylphenol, polyoxyethylene sorbite fatty acid ester, polyoxyethylene alkylphenyl formaldehyde condensate, polyoxyethylene sterol and its derivatives, polyoxyethylene lanolin and its derivatives, polyoxyethylene beeswax derivatives, sugar esters Nonionic emulsifiers such as higher fatty acid soaps, alkyl sulfates, alkyl phosphates, polyoxyethylene Alkyl ether sulfate, polyoxyethylene alkylphenyl ether sulfate, alkyl ether phosphate, alkyl ether carboxylate, acylmethyl taurate, N-acyl-N-methyl-β-alanine, N-acylglycine salt N-acyl glutamate, polyoxyethylene alkyl carboxylate, alkylphenyl ether sulfonate, alkyl sulfosuccinic acid and its salt, N-acyl sarcosine and its salt, polyoxyethylene coconut oil fatty acid monoethanolamide sulfate, etc. Anionic emulsifiers; alkylamine salts, fatty acid amide amine salts, amine salts such as ester-containing tertiary amine salts, monoalkyl quaternary ammonium salts, dialkyl quaternary ammonium salts, trialkyl quaternary ammonium salts, benzalkonium Examples include alkyl quaternary ammonium salts such as type quaternary ammonium salts, cyclic quaternary ammonium salts such as alkyl pyridinium salts, and cationic emulsifiers such as benzethonium chloride. Among these, nonionic emulsifiers are preferable, and polyoxyethylene hydrogenated castor oil, polyoxyethylene glycerin fatty acid ester, polyoxyethylene sorbitan fatty acid ester, and polyglycerin fatty acid ester are preferable.

  The content of “other emulsifier” in 100% by mass of the emulsified cosmetic of the present invention is preferably 0.05% by mass or more, more preferably 0.1% by mass or more and 5.0% by mass or less, more preferably. Is 3.0 mass% or less. In addition, it is preferable that a nonionic emulsifier satisfy | fills the said range. The content of “other emulsifier” is the total amount of all “other emulsifiers” contained in the emulsified cosmetic of the present invention.

  The emulsified cosmetic of the present invention may further contain optional components other than those described above. Although it does not specifically limit as said arbitrary component, For example, Lower alcohol; Polyhydric alcohols, such as glycerol and 1, 3- butylene glycol; Ultraviolet absorber; Powder; Antioxidant; Preservatives, such as methyl paraben; Agents; Chelating Agents; Cooling Agents; Thickeners; Vitamins; Neutralizing Agents; Amino Acids; pH Adjusters; Whitening Agents; Anti-inflammatory Agents; Deodorants; Animal and Plant Extracts; Additives such as an agent. Other components may be used alone or in combination of two or more.

  The emulsified cosmetic of the present invention preferably contains substantially no “monovalent linear aliphatic alcohol having 12 to 22 carbon atoms”. When the aliphatic alcohol is contained, the emulsified cosmetic may become hard over time. Here, the content of “monovalent linear aliphatic alcohol having 12 to 22 carbon atoms” in 100% by mass of the emulsified cosmetic of the present invention is 0.1% by mass or less (that is, 0 to 0.1% by mass). ) Is preferable, more preferably 0.05% by mass or less, and still more preferably 0.01% by mass or less. In particular, when the emulsified cosmetic of the present invention is an emulsion, it is preferable to satisfy the above range.

  Specific examples of the “monovalent linear aliphatic alcohol having 12 to 22 carbon atoms” include cetanol, behenyl alcohol, stearyl alcohol, cetearyl alcohol and the like. The “monovalent linear aliphatic alcohol having 12 to 22 carbon atoms” may be only one type, or may be two or more types.

  In the present invention, the smaller the electrolyte content in the emulsified cosmetic, the better the storage stability, which is preferable. The content of the electrolyte in 100% by mass of the emulsified cosmetic of the present invention is preferably less than 0.3% by mass (that is, 0% by mass or more and less than 0.3% by mass), more preferably from the viewpoint of storage stability. It is 0.1 mass% or less. In addition, content of electrolyte is the total amount of all the electrolytes contained in the emulsified cosmetics of this invention.

  The “electrolyte” in the present specification does not include the above components A to F. Examples of the electrolyte include monovalent metal salts and divalent or higher polyvalent metal salts. The metal salt may be an inorganic salt or an organic salt. Examples of the metal salt include sodium salt, potassium salt, calcium salt, magnesium salt, zinc salt, ammonium salt, aluminum salt and the like. Specifically, zinc paraphenol sulfonate, sodium chloride, potassium chloride, calcium chloride, magnesium chloride, magnesium sulfate, alum, sodium carbonate, sodium bicarbonate, potassium bicarbonate, ammonium chloride, sodium phosphate, dihydrogen phosphate Examples thereof include sodium, sodium dihydrogen phosphate, sodium citrate (trisodium citrate), disodium edetate, and potassium aluminum sulfate. The electrolyte further includes benzalkonium chloride and chlorohydroxyaluminum.

  The pH of the emulsified cosmetic of the present invention is not particularly limited, but is preferably 5.0 to 7.5, for example, and more preferably 5.5 to 7.0 at 25 ° C.

  Although the viscosity of the emulsified cosmetic of the present invention is not particularly limited, for example, the viscosity at 25 ° C. is preferably 500 to 80000 mPa · s, and more preferably 1500 to 25000 mPa · s. Viscosity measurement is carried out using a B-type viscometer with a rotor and rotation speed suitable for the viscosity. In addition, when the said viscosity is 500-25000 mPa * s, the emulsified cosmetics of this invention are emulsions.

  Although it does not specifically limit as a dosage form of the emulsified cosmetics of this invention, For example, a cream, an emulsion, etc. are mentioned. Among these, an emulsion is preferable.

  The emulsified cosmetic of the present invention is not particularly limited. For example, skin care such as moisturizing cosmetics, whitening cosmetics, acne care cosmetics, and anti-aging cosmetics (for example, wrinkle suppression, sagging suppression). Examples include cosmetics. The emulsified cosmetic of the present invention is preferably used as a skin cosmetic. The emulsified cosmetic of the present invention may be any of cosmetics, quasi drugs, pharmaceuticals, and miscellaneous goods, for example.

  The site to which the emulsified cosmetic of the present invention is applied is not particularly limited, but includes the face (for example, forehead, eyes, eyes, cheeks, mouth, etc.), arms, elbows, back of hands, fingertips, feet, knees, heels, neck, Side, back, etc.

  In the emulsified cosmetic of the present invention, component A is preferably contained in a hydrated state. Thereby, the effect which gives the skin a firm feeling is exhibited. In order to make component A into a hydrated state, it is preferable to heat component A together with at least water in the production process of the emulsified cosmetic of the present invention. That is, this specification includes the following inventions.

  In this specification, it is a manufacturing method of the emulsified cosmetic which mixes component A, component B, component C, and component D, Comprising: Content of component A is 0.2-3.5 mass% Yes, the content of Component B is 0.08% by mass or more, the content of Component C is 0.13 to 0.4% by mass, and the mass ratio of Component B to Component A (B / A) is 0 0.03 to 0.35, the mass ratio of component C to component A (C / A) is 0.045 or more, and includes at least the step of heating component A to 60 ° C. or more. A method for producing cosmetics. In the said manufacturing method, it is preferable to heat the component A at 65-90 degreeC, More preferably, it is preferable to heat at 70-85 degreeC. As an aspect of the above production method, for example, an aqueous component (for example, component A, component B, component C, component D, electrolyte, etc.) and an oily component (component E, component F, oil agent, etc.) are separately heated. Then, the aspect which mixes both components and manufactures emulsified cosmetics is mentioned. In addition, it is preferable that the said component A before a heating is a state of hydrophobic powder.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example, this invention is not limited only to these Examples. In addition, a compounding quantity and content are the quantity converted into the pure part, and represent "mass%" unless it mentions specially.

Examples 1-6 and Comparative Examples 1-6 (Preparation of emulsified cosmetics)
According to the composition described in Tables 1-2, each emulsified cosmetic of Examples 1-6 and Comparative Examples 1-6 was prepared as follows.

  As an aqueous phase, component A, component B, component C, component D, potassium hydroxide, glycerin, 1,3-butylene glycol, EDTA-2Na, and methylparaben were mixed and heated to 85 ° C. Moreover, as an oil phase, the component E, the component F, the other emulsifier, and the oil agent were mixed and it heated at 85 degreeC. Next, the water phase and the oil phase were mixed, emulsified with a homomixer at a rotational speed of 6000 rpm for 5 minutes, emulsified, and cooled to 35 ° C. to prepare an emulsified cosmetic.

  The emulsified cosmetic of Example 1 had a pH of 6.5 at 25 ° C. and a viscosity at 25 ° C. of 6570 mPa · s. Moreover, the 25 degreeC pH of the emulsified cosmetics of the other Example was 6.5, and the viscosity at 25 degreeC was the range of 6570-32280 mPa * s. The emulsified cosmetic of Example 5 was creamy, and the other examples were emulsions.

Test Example 1: Storage stability of emulsified cosmetics (low temperature stability, high temperature stability)
(Low temperature stability)
The emulsified cosmetics of each Example and Comparative Example were stored for 28 days in a thermostatic chamber at -3 ° C. Each emulsified cosmetic after storage was allowed to stand at 25 ° C. for 4 hours, and then the low temperature stability of each emulsified cosmetic was evaluated by the following method. Specifically, each emulsified cosmetic was thinly applied to a glass plate, and the application state was observed. Furthermore, the flowability of the emulsion emulsion cosmetic was observed, and the state of the cream emulsion emulsion scraped with a finger was observed. In the uniform application state, if it is milky, it is fluid, and if it is creamy, it is easily scraped and evaluated as good low-temperature stability (○). Those having no fluidity in the case of emulsion and those having a high elasticity and difficult to scrape in the case of cream were evaluated as poor low-temperature stability (x).

(High temperature stability)
The emulsified cosmetics of each Example and Comparative Example were stored for 28 days in a thermostatic chamber at 40 ° C. Each emulsified cosmetic after storage was allowed to stand at 25 ° C. for 4 hours, and then the low temperature stability of each emulsified cosmetic was evaluated by the following method. Specifically, the appearance of each emulsified cosmetic was observed. Furthermore, the flowability of the emulsion emulsion cosmetic was observed, and the state of the cream emulsion emulsion scraped with a finger was observed. Those having no separation or obvious viscosity reduction were evaluated as good high-temperature stability (◯), and those having separation or obvious viscosity reduction were evaluated as high-temperature stability failure (×).
The results are shown in Tables 1-2.

Test Example 2: Feeling of emulsified cosmetic application (harshness)
Three professional evaluators applied the emulsified cosmetics obtained in each Example and each Comparative Example to the inner side of the forearm, and compared the feeling at the time of application with the emulsion of the following standard prescription. It was evaluated with.
<Standard prescription (milky lotion)>
Xanthan gum: 0.05% by mass
Carboxyvinyl polymer: 0.1% by mass
Hydrogenated lecithin: 1.0% by mass
Monostearic acid POE-20 sorbitan: 0.5% by mass
Glyceryl monostearate: 0.5% by mass
Potassium hydroxide: 0.05% by mass
Liquid paraffin: 2.0% by mass
Dimethicone: 0.5% by mass
Isostearic acid PG: 2.0% by mass
Glycerin: 5.0% by mass
1,3-butylene glycol: 5.0% by mass
EDTA-2Na: 0.08% by mass
Methyl paraben: 0.2% by mass
Water: remainder

<Evaluation criteria for elasticity>
◎ (Excellent): Excellent elasticity compared to the standard formula.
○ (Good): A clear feeling is felt more than the standard prescription.
X (Bad): No apparent difference in firmness compared to the standard prescription.

Details of the evaluation in Table 2 are as follows.
X1: Separation was observed.
X2: Blurred properties.
Δ3: A part that was partially blurred was observed.
-: The obtained composition was uneven and non-uniform.

The details of each component are as follows.
Octenyl succinate corn starch Al: AKZONOBEL, trade name “DRY-FLO PURE”, octenyl succinate corn starch aluminum xanthan gum: DSP Gokyo Food & Chemical, trade name “Echo Gum T”
Carboxy vinyl polymer: LUBRIZOL, trade name “Carbopol 980”
Alkyl-modified carboxyvinyl polymer: manufactured by LUBRIZOL, trade name “PEMULEN TR-1”
Hydrogenated lecithin: Product name “Resinol S-10” manufactured by Nikko Chemicals
Monostearic acid POE-20 sorbitan: manufactured by Kao Corporation, trade name “Leodol TW-S120V”
Liquid paraffin: manufactured by SONNEBORN, trade name “CARNATION # 70”
Dimethicone: product name “SH200C 10CS-JASU” manufactured by Toray Dow Corning
Isostearic acid PG: manufactured by Aoki Yushi Kogyo Co., Ltd., trade name “Isostearsan PG”, propylene glycol isostearate

The following was found from Tables 1 and 2 above.
In the case where the amounts of Component A, Component B and Component C did not reach the specified range and the B / A value exceeded the specified range (Comparative Example 1), the low temperature stability and high temperature stability were inferior. It was also inferior. In the case where the amount of component A exceeds the specified range, the amount of component B does not reach the specified range, and the B / A value does not reach the specified range (Comparative Example 2), the low temperature stability is poor and the high temperature stability Slightly inferior to sex. In the case where the amount of component B did not reach the specified range, the amount of component C did not reach the specified range, and the B / A value did not reach the specified range (Comparative Example 3), low temperature stability and high temperature stability It was inferior. In the example in which the amount of component C did not reach the specified range and the B / A value exceeded the specified range (Comparative Example 4), the low temperature stability was poor and the high temperature stability was slightly poor. In the example where the amount of component C did not reach the specified range and the C / A value did not reach the specified range (Comparative Example 5), the low temperature stability and high temperature stability were poor. In the example (Comparative Example 6) in which the amount of component B did not reach the specified range and the amount of component C exceeded the specified range, the product was in a non-uniform bulging state, and can be clearly treated as an emulsified composition. Since it was not a thing, the evaluation itself was not performed.

  On the other hand, emulsification of the present invention comprising components A to D, the contents of component A, component B and component C are all within the specified range, and the B / A value and the C / A value are both within the specified range. It was found that the cosmetics (Examples 1 to 6) were excellent in storage stability at low and high temperatures, and also excellent in elasticity.

  The emulsified cosmetics of the present invention can be used as cosmetics such as emulsions and creams that can impart a firm feeling to the skin.

Claims (7)

Contains the following component A, the following component B, the following component C, and the following component D,
The content of component A is 0.2 to 3.5% by mass, the content of component B is 0.08% by mass or more, and the content of component C is 0.13 to 0.4% by mass. %, The mass ratio (B / A) of the component B to the component A is 0.03 to 0.35, and the mass ratio (C / A) of the component C to the component A is 0.045 or more. Is an emulsified cosmetic.
Component A: Aluminum starch octenyl succinate Component B: Xanthan gum Component C: Carboxyvinyl polymer and / or alkyl-modified carboxyvinyl polymer Component D: Water Furthermore, the emulsified cosmetics of Claim 1 containing the following component E.
Component E: Phospholipid Furthermore, the emulsified cosmetics of Claim 1 or 2 containing the following component F.
Component F: glyceryl monostearate and / or sorbitan monostearate   The emulsified cosmetic according to any one of claims 1 to 3, wherein the viscosity at 25 ° C is 500 to 80000 mPa · s.   The emulsified cosmetic according to any one of claims 1 to 4, which does not substantially contain a monovalent linear aliphatic alcohol having 12 to 22 carbon atoms.   The emulsified cosmetic according to any one of claims 1 to 5, wherein the electrolyte content is less than 0.3% by mass.   The emulsified cosmetic according to any one of claims 1 to 6, which is a skin cosmetic.