JP2017095393A - Foamy skin cleanser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foamy skin cleanser capable of discharging creamy foams.SOLUTION: There is provided a foamy skin cleanser obtained by filling an aerosol container with a stock solution and a propellant, wherein the stock solution contains a component A: an N-acylamino acid salt, a component B: a higher fatty acid and/or a salt thereof, a component C: a monoalkyl phosphate ester salt, a component D: a polyoxyethylene hardened castor oil, a component E: a polyhydric alcohol and a component F: 45 to 98 mass% of water and the propellant contains a liquid petroleum gas and carbon dioxide gas.SELECTED DRAWING: None

Description

  The present invention relates to a foam skin cleanser.

  Conventionally, there are various aerosol products. Foam-like skin cleansing materials that form foam when discharged from an aerosol container are used as cleansing materials for the face, hands, body, scalp and hair. These foam-like skin cleansing materials are filled with an aerosol container with a stock solution and a propellant, and the stock solution contains a detergent composition, for example, an anionic surfactant. Petroleum gas (LPG) or the like is used.

  In foam-like skin cleansers, emphasis is placed on the fineness of foam, and Patent Documents 1 to 3 contain an amino acid-based surfactant and an aerosol type in which liquefied petroleum gas and carbon dioxide are used in combination as propellants. A skin cleanser is disclosed.

Japanese Patent No. 5707225 Japanese Patent No. 5707226 JP 2011-207862 A

  However, in a delicate part such as a face, a demand for foam quality is high, and a more creamy foam quality is required.

  The subject of this invention is providing the foam-form skin cleansing agent which can discharge creamy foam.

The present invention is a foam skin cleansing agent in which a stock solution and a propellant are filled in an aerosol container, the stock solution comprising:
Component A: N-acyl glutamate
Component B: higher fatty acid and / or salt thereof,
Component C: monoalkyl phosphate ester salt
Component D: polyoxyethylene hydrogenated castor oil,
Component E: Polyhydric alcohol, and Component F: 45 to 98% by mass of water
And the propellant contains a liquefied petroleum gas and a carbon dioxide gas.

  ADVANTAGE OF THE INVENTION According to this invention, the foam-form skin cleansing agent which can discharge creamy foam can be provided.

  The foam skin cleansing material of the present invention is one in which a stock solution and a propellant are filled in an aerosol container. The foam skin cleansing material of the present invention forms foam when used, that is, when discharged from an aerosol container and / or after adhering to a target, and discharges very creamy foam. Can do. Hereinafter, each component of the foam skin cleansing material of the present invention will be described.

The stock solution is
Component A: N-acyl glutamate component B: higher fatty acid and / or salt thereof component C: monoalkyl phosphate ester salt
Component D: polyoxyethylene hydrogenated castor oil,
Component E: Polyhydric alcohol, and Component F: Water are contained as essential components.
In addition to the essential components, the stock solution preferably further contains component G: polyglycerin fatty acid ester and / or component H: polyethylene glycol fatty acid ester.
The stock solution may further contain components other than the components A to H (other components). Each of the components A to H and other components may be used alone or in combination of two or more.

  The N-acyl glutamate of component A has a high detergency and realizes good foaming even when carbon dioxide is contained in the propellant. Only 1 type may be used for the said component A, and 2 or more types may be used for it.

  Examples of the acyl group in the N-acyl glutamate include linear or branched aliphatic acyl groups having 8 to 24 carbon atoms. Specifically, for example, octanoyl group, decanoyl group, lauroyl group, myristoyl group, palmitoyl group, stearoyl group, isostearoyl group, oleoyl group, linoleoyl group, behenyl group, acyl group derived from coconut oil fatty acid (hereinafter, coconut oil) Oil fatty acid acyl group), an acyl group derived from palm oil fatty acid (hereinafter referred to as palm fatty acid acyl group), and the like.

  Examples of the salt in the N-acyl glutamate include alkali metal salts such as sodium salt and potassium salt; alkanolamine salts such as monoethanolamine salt, diethanolamine salt and triethanolamine salt.

  Specific components A include, for example, sodium lauroyl glutamate, potassium lauroyl glutamate, triethanolamine lauroyl glutamate, sodium myristoyl glutamate, potassium myristoyl glutamate, potassium stearoyl glutamate, sodium stearoyl glutamate, sodium coconut fatty acid acyl glutamate (sodium cocoyl glutamate ), Coconut oil fatty acid acyl potassium glutamate (potassium cocoyl glutamate), coconut oil fatty acid acyl glutamic acid triethanolamine (cocoyl glutamic acid triethanolamine) and the like.

  The content of component A in 100% by mass of the stock solution is preferably 0.1 to 20% by mass, more preferably 0.5 to 15% by mass, from the viewpoint of detergency, and from the viewpoint of exerting good foaming. More preferably, it is 1-10 mass%. The content is the total content of all components A contained in the stock solution.

  Component B is a higher fatty acid and / or a salt thereof, that is, one or both of a higher fatty acid and a higher fatty acid salt. Ingredient B acts as a cleaning ingredient and exhibits excellent foaming properties and foaminess. Only 1 type may be used for the said component B, and 2 or more types may be used for it.

  Examples of the higher fatty acid include higher fatty acids having 12 to 22 carbon atoms such as lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, and behenic acid; vegetable oils such as olive oil, coconut oil, palm oil, and cottonseed oil Animal oils such as fish oil and beef tallow. Among these, from the viewpoint of exhibiting excellent foamability and foaminess, and from the viewpoint of enhancing detergency, higher fatty acid salts having 12 to 22 carbon atoms are preferable, and lauric acid, myristic acid, palmitic acid, and stearic acid are more preferable .

  Examples of the salt in the higher fatty acid salt include alkali metal salts such as sodium salt and potassium salt; alkanolamine salts such as monoethanolamine salt, diethanolamine salt and triethanolamine salt.

  The higher fatty acid salt may be mixed with a higher fatty acid salt prepared in advance, or the higher fatty acid and the base may form a salt in the stock solution.

  The content of Component B in 100% by mass of the undiluted solution is preferably 0.01 to 20% by mass from the viewpoint of exhibiting excellent foamability and foaminess as well as enhancing detergency as the amount of higher fatty acid. More preferably, it is 0.05-10 mass%, More preferably, it is 0.07-2 mass%. The content is the total content of all components B contained in the stock solution (content when converted as a higher fatty acid).

  The monoalkyl phosphate ester salt of Component C acts as a cleaning component and is effective in increasing foam smoothness and forming creamy foam. Only 1 type may be used for the said component C, and 2 or more types may be used for it.

  The number of carbon atoms of the alkyl group in the monoalkyl phosphate ester salt is preferably 8 to 24, more preferably 10 to 20, and still more preferably 12 to 18 from the viewpoint of improving foam quality to make smooth foam. .

  Examples of the salt in the monoalkyl phosphate ester salt include alkali metal salts such as sodium salt and potassium salt; alkanolamine salts such as monoethanolamine salt, diethanolamine salt and triethanolamine salt.

  Specific examples of component C include sodium lauryl phosphate, disodium lauryl phosphate, potassium lauryl phosphate, potassium cetyl phosphate, diethanolamine cetyl phosphate, and the like.

  The content of component C in 100% by mass of the stock solution is preferably 0.01 to 10% by mass, more preferably 0.05 to 5% by mass, and more preferably 0.05 to 5% by mass, from the viewpoint of improving the foam quality to obtain a smooth foam. Preferably it is 0.1-3 mass%. The content is the total content of all components C contained in the stock solution.

  The polyoxyethylene hydrogenated castor oil of Component D is effective in improving the familiarity between the stock solution and the propellant and forming fine bubbles. Only 1 type may be used for the said component D, and 2 or more types may be used for it.

  The average number of added moles of ethylene oxide in the polyoxyethylene hydrogenated castor oil is not particularly limited, but is preferably 10 to 100, more preferably 30 to 60, from the viewpoint of forming fine bubbles.

  The content of component D in 100% by mass of the stock solution is preferably from 0.01 to 5% by mass, more preferably from the viewpoint of improving the familiarity between the stock solution and the propellant and forming fine bubbles. It is 05-3 mass%, More preferably, it is 0.1-1 mass%. The content is the total content of all components D contained in the stock solution.

  The polyhydric alcohol of component E effectively acts as a so-called foam that maintains creamy foam, suppresses the precipitation of crystals such as higher fatty acid salts, and effectively acts on the stability of the preparation. Precipitation of crystals due to salt or the like in an aerosol formulation can cause clogging of the discharge port of the aerosol, but in the present invention, polyhydric alcohol which is component E together with the above components A to D is an essential component. By blending, precipitation of crystals such as salts can be suppressed, formulation stability can be improved, and creamy foam with excellent foam can be discharged. The said component E may use only 1 type and may use 2 or more types.

  Specific components E include, for example, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, isoprene glycol, dipropylene glycol, polyethylene glycol, 1,3-butylene glycol (1,3-butanediol), 1,2 -Butanediol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, 1,2-decanediol, glycerin (1,2,3-propanetriol), diglycerin, polyglycerin, Examples include sorbitol, maltitol, polyoxyethylene methyl glucoside, polyoxypropylene methyl glucoside and the like.

  The content of component E in 100% by mass of the undiluted solution is preferably 0.5 to 40 masses from the viewpoint of enhancing foaminess and suppressing the precipitation of crystals such as salts and imparting excellent formulation stability. %, More preferably, it is 5-35 mass%, More preferably, it is 10-30 mass%. The content is the total content of all components E contained in the stock solution.

  In the present invention, it is preferable that the polyhydric alcohol contains polyethylene glycol from the viewpoint of realizing extremely excellent foaminess and further from the viewpoint of imparting exceptionally excellent formulation stability. In addition, it is possible to reduce irritation to the skin by containing polyethylene glycol.

  The number average molecular weight of the polyethylene glycol is not particularly limited as long as the desired effect is sufficiently exhibited, but from the viewpoint of foaminess and the suppression of precipitation, it is preferably 50 to 10,000, more preferably 100 to 5000. is there. Only 1 type may be used for the said polyethylene glycol, and 2 or more types from which a number average molecular weight differs may be used.

  The content of the polyethylene glycol in 100% by mass of the stock solution is preferably 0.1 to 10% by mass, more preferably 0.5 to 8% by mass, from the viewpoint of enhancing foaminess and the effect of suppressing precipitation. It is.

  The water of component F is not particularly limited as long as it can be used as a cosmetic raw material, but usually purified water is preferably used.

  The content of water of component F in 100% by mass of the stock solution is 45 to 98% by mass, preferably 50 to 95% by mass, more preferably 55 to 90% by mass, from the viewpoint of forming creamy foam. is there.

  The stock solution preferably further contains Component G: Polyglycerin fatty acid ester and / or Component H: Polyethylene glycol fatty acid ester.

  The polyglycerin fatty acid ester of component G not only effectively increases the suppression of precipitation of crystals such as higher fatty acid salts, but also can reduce irritation to the skin. Only 1 type may be used for the said component G, and 2 or more types may be used for it.

  Specific components G include, for example, diglyceryl monostearate, diglyceryl monooleate, diglyceryl monoisostearate, tetraglyceryl monostearate, tetraglyceryl monooleate, hexaglyceryl monolaurate, hexaglyceryl monomyristate Polyglycerin fatty acid monoesters such as hexaglyceryl monostearate, hexaglyceryl monooleate, decaglyceryl monolaurate, decaglyceryl monomyristate, decaglyceryl monostearate, decaglyceryl monooleate, decaglyceryl monolinoleate; Polyglycerin fatty acid diesters such as diglyceryl acid, decaglyceryl distearate, decaglyceryl diisostearate; tetraglyceryl tristearate , Polyglyceryl fatty acid triesters such as hexaglyceryl tristearate, decaglyceryl tristearate, decaglyceryl trioleate; tetraglyceryl pentastearate, tetraglyceryl pentaoleate, hexaglyceryl pentastearate, hexaglyceryl pentaoleate, etc. And polyglycerol fatty acid pentaesters. Among them, it is preferable to use polyglycerol fatty acid monoester from the viewpoint of enhancing the effect of suppressing the precipitation of crystals and reducing the skin irritation.

  The average degree of polymerization of polyglycerin in the polyglycerin fatty acid ester is preferably 2 to 10, more preferably 6 to 10 from the viewpoint of enhancing the effect of suppressing the precipitation of crystals.

  In addition, the fatty acid in the polyglycerin fatty acid ester is preferably a fatty acid having 8 to 24 carbon atoms, more preferably a fatty acid having 10 to 20 carbon atoms, more preferably a carbon number, from the viewpoint of enhancing the effect of suppressing the precipitation of crystals. 12 to 18 fatty acids.

  The content of component G in 100% by mass of the undiluted solution is preferably 0.1 to 10% by mass, more preferably 0.5 to 7%, from the viewpoint of enhancing the crystal precipitation suppression effect and reducing the skin irritation. It is 1 mass%, More preferably, it is 1-5 mass%. The above content is the total content of all components G contained in the stock solution.

  The polyethylene glycol fatty acid ester of component H can not only effectively suppress the precipitation of crystals such as higher fatty acid salts, but also can increase foaminess. The said component H may use only 1 type and may use 2 or more types.

  Specific examples of the component H include monofatty acid polyethylene glycol such as polyethylene glycol monolaurate, polyethylene glycol monostearate, polyethylene glycol monoisostearate, polyethylene glycol monooleate; polyethylene glycol dilaurate, polyethylene glycol distearate, diisostearate. Examples include difatty acid polyethylene glycols such as polyethylene glycol acid and polyethylene glycol dioleate. Among these, monofatty acid polyethylene glycol is preferably used from the viewpoint of enhancing the effect of suppressing the precipitation of crystals and from the viewpoint of enhancing foaminess.

  The fatty acid in the polyethylene glycol fatty acid ester is preferably a fatty acid having 8 to 24 carbon atoms, more preferably a fatty acid having 10 to 20 carbon atoms, more preferably 12 to 12 carbon atoms, from the viewpoint of enhancing the effect of suppressing the precipitation of crystals. 18 fatty acids.

  Moreover, the average added mole number of ethylene oxide in the polyethylene glycol fatty acid ester is preferably 100 to 300, more preferably 120 to 280 from the viewpoint of enhancing the effect of suppressing the precipitation of crystals.

  The content of component H in 100% by mass of the stock solution is preferably from 0.01 to 3% by mass, more preferably from 0.1 to 2% from the viewpoint of enhancing the effect of suppressing the precipitation of crystals and increasing the foaminess. 5 mass%, More preferably, it is 0.3-2 mass%. The content is the total content of all components H contained in the stock solution.

  The stock solution is not particularly limited. For example, anionic surfactants other than the above components A, B and C, a cationic surfactant, and a nonionic surfactant other than the above components D, G and H; Fragrance; ethanol; silicone oil such as cyclopentasiloxane, hydrogen dimethicone, caprylyl methicone, dimethicone; fatty acid ester oil such as isopropyl myristate, ethylhexyl palmitate, cetyl 2-ethylhexanoate; phenoxyethanol, octoxyglycerin, methylparaben, etc. Antiseptics; cooling agents such as menthol, menthyl glyceryl ether, camphor and peppermint oil; anti-inflammatory agents such as dipotassium glycyrrhizinate and stearyl glycyrrhizinate; plant extract extracts such as peonies, buttonpi, loquat and aloe; Thickening polymers such as nyl polymer, alkyl-modified carboxyvinyl polymer, hydroxyethyl cellulose, xanthan gum; antioxidants such as tocopherol and dibutylhydroxytoluene; whitening agents such as arbutin and ascorbic acid; powders such as silica, talc and nylon powder May be included.

  The stock solution can be prepared by a conventional method. For example, the above-mentioned constituent components are mixed and a known method, specifically, a method of stirring with a homomixer or the like can be mentioned.

  The propellant contains liquefied petroleum gas (LPG) and carbon dioxide. A smoother foam quality can be obtained by combining carbon dioxide with liquefied petroleum gas.

  Examples of the liquefied petroleum gas include propane, butane, isobutane, isopentane and the like, and these mixed gases are generally used. However, in the present invention, isobutane is preferable because of less irritation to the skin.

  The content of isobutane in 100% by volume of liquefied petroleum gas is preferably 80% by volume or more, more preferably 90% by volume or more. Usually, as the amount of isobutane in the liquefied petroleum gas increases, the internal pressure of the aerosol container becomes more difficult to increase. However, in the present invention, the combined use of carbon dioxide gas can increase the internal pressure and increase the momentum of discharge.

  The content of the liquefied petroleum gas in the total amount of the stock solution and the propellant of 100% by mass is preferably 1-10% by mass, more preferably 1-8% by mass.

  The content of carbon dioxide in the total amount of the stock solution and the propellant is 100% by mass, preferably 0.1-2% by mass, more preferably 0.1-1.5% by mass.

  Although it does not specifically limit as another propellant, For example, gas (especially compressed gas), such as air, nitrogen, nitrous oxide; dimethyl ether (DME), a fluorocarbon, etc. are mentioned.

  The content of the propellant in the total amount of the stock solution and the propellant of 100% by mass is preferably 1.1 to 12% by mass, more preferably 1.1 to 9.5% by mass.

  The foam skin cleanser of the present invention can be produced by filling an aerosol container with a stock solution and a propellant by a conventional method.

  The foam skin cleansing material of the present invention is a skin cleansing material used for cleaning skin such as the face. Examples of the foam skin cleanser of the present invention include face wash, hand soap, body soap and scalp cleanser. Since the foam skin cleansing material of the present invention has a creamy foam quality, it is particularly suitable for a delicate cleansing material such as a facial cleanser.

  Further, the foam-like skin cleansing agent of the present invention has an aspect that the stock solution contains polyethylene glycol as component E, further contains the polyglycerin fatty acid ester of component G, and the propellant contains isobutane. The irritation of is significantly reduced. That is, from the viewpoint of further improving the low irritation to the skin, the foam skin cleanser of the present invention preferably contains Component G. In the foam skin cleanser of the present invention, Component E is polyethylene. It is preferred that it contains glycol and the propellant contains isobutane. Such a foam skin cleanser is also useful as a hypoallergenic foam skin cleanser.

  Hereinafter, the present invention will be described in more detail based on examples and the like, but the present invention is not limited only to such examples.

Examples 1-9 and Comparative Examples 1-2
After the stock solution having the composition shown in Table 1 is filled into an aerosol container (φ35 mm × 105 mm, aluminum can, full container amount: 91 ml), the aerosol valve is clinched into the container, and then sprayed with the composition described in Table 1 The agent was filled from the stem, a suitable spout was attached, and a foam skin cleanser was obtained. The total amount of the stock solution and the propellant filled in the aerosol container is 50 g.

  Details of each raw material in Examples and Comparative Examples are as follows. In addition, the amount described in Table 1 is not the amount of merchandise but the amount of each component (amount of active ingredient).

Sodium cocoyl glutamate: Amino Surfact ACDS-L (Asahi Kasei Chemicals)
Myristic acid: EDENOR C14-99 (manufactured by Emery Oleochemicals)
Sodium lauryl phosphate: NIKKOL SLP-N (manufactured by Nikko Chemicals)
Polyoxyethylene hydrogenated castor oil: EMALEX HC-50 (manufactured by Nippon Emulsion Co., Ltd .: 50 moles of added ethylene oxide)
Glycerin: Concentrated glycerin for makeup (manufactured by Sakamoto Pharmaceutical Co., Ltd.)
Polyethylene glycol: PEG-1500 (manufactured by Sanyo Chemical Industries, Ltd .: number average molecular weight 1500)
Decaglyceryl monomyristate: Glysurf 10MM (Aoki Yushi Kogyo Co., Ltd.)
Polyethylene glycol monostearate: Emanon 3199VB (manufactured by Kao Corporation: 150 added moles of ethylene oxide)
Xanthan gum: Echo gum T (DSP Gokyo Food & Chemical Co., Ltd.)

  The foam-like skin cleansing materials prepared in Examples 1 to 9 and Comparative Examples 1 and 2 were evaluated for “foam quality” and “skin irritation” by the following methods. The results are shown in Table 1.

[Test Example 1: Evaluation of foam quality 1 (appearance)]
The foam-like skin cleansing material of each example and each comparative example was discharged on the palm of the hand, and a visual evaluation was performed on the “fineness” of the foam after the discharge, and the score according to the following 1 to 4 evaluation points I put it on.
In addition, evaluation was performed by 10 evaluation panels, and the result of the evaluation score (score) obtained with the largest number of people was used as the result of each sample.

[Evaluation score (score) criteria]
4 points (evaluation point 4: very good): bubbles are formed by uniform and fine bubbles (evaluation point 3: good): bubbles are formed by non-uniform but fine bubbles 2 Point (evaluation point 2: inadequate): One point in which bubbles containing large bubbles are formed (evaluation point 1: poor): Gas is discharged in a separated state

[Test Example 2: Foam quality evaluation 2 (feel)]
After having the face washed off with warm water of 40 ° C. by the same evaluation panel, the face-cleaning operation was actually performed using the foam skin cleansing material of each Example and each Comparative Example, and foam was applied to the cheek. The sensory evaluation was performed on the feel (feel per skin) when extending and spreading like a circle, and scored according to the following 1 to 4 evaluation points.
In the evaluation, the results of evaluation points (scores) obtained with the largest number of people were used as the results of each sample as in Test Example 1.

[Evaluation score (score) criteria]
4 points (evaluation point 4: very good): 3 points with very high creamy foam feeling (smooth touch) (evaluation point 3: good): 2 points with creamy foam feeling (smooth touch) (evaluation) Point 2: insufficient): 1 point inferior to creamy foam feeling (smooth touch) (evaluation point 1: poor): no creamy foam feeling (smooth touch)

[Test Example 3: Evaluation of skin irritation]
After having the face washed away with warm water of 40 ° C. by the same evaluation panel, the face was actually washed using the foam skin cleanser of each Example and each Comparative Example. The sensory evaluation was performed for the presence or absence of “skin irritation” such as “burning sensation”, “tingling sensation”, “burning sensation”, and scored according to the evaluation points divided into 5 levels from 1 point to 5 points below.
In addition, evaluation made the result of the evaluation score (score) obtained with the largest number of people the result of each sample.

[Evaluation score (score) criteria]
5 points (evaluation point 5): no skin irritation (skin irritation is low)
4 points (evaluation point 4): 3 points for slightly feeling skin irritation (evaluation point 3): 2 points for feeling skin irritation (evaluation point 2): 1 point for strongly feeling skin irritation (evaluation point 1): Skin irritation Feels very strong (high skin irritation)

From the above results, it can be seen that the foam-like skin cleansing materials of Examples 1 to 9 can discharge creamy foam as compared with those of Comparative Examples 1 and 2.
Especially, it turns out that creamy foam feeling improves by the mixing | blending of N-acyl glutamate from the comparison of Examples 1-3 and the comparative example 1. FIG.
Similarly, from the comparison of Examples 1, 4, 5 and the comparison of Examples 1, 8, 9 and Comparative Example 2, it can be seen that the creamy foam feeling is improved by blending of higher fatty acid and polyhydric alcohol.
Moreover, it turns out that both fineness of a foam and creamy foam feeling improve by the mixing | blending of the monoalkyl phosphate ester salt from the contrast of Example 1, 6, 7.

  The foam-like skin cleansing material of the present invention can be used as a cleansing material for the face, hands, body, scalp and hair.

Claims (3)

A foam-like skin cleansing agent in which a stock solution and a propellant are filled in an aerosol container, wherein the stock solution is
Component A: N-acyl glutamate
Component B: higher fatty acid and / or salt thereof,
Component C: monoalkyl phosphate ester salt
Component D: polyoxyethylene hydrogenated castor oil,
Component E: Polyhydric alcohol, and Component F: 45 to 98% by mass of water
A foam-like skin cleanser, wherein the propellant contains liquefied petroleum gas and carbon dioxide.   The foam-like skin cleanser according to claim 1, wherein the component E contains polyethylene glycol.   The foamed skin cleanser according to claim 1 or 2, wherein the stock solution further contains component G: polyglycerin fatty acid ester and / or component H: polyethylene glycol fatty acid ester.