JP6571361B2 - Foam skin cleanser - Google Patents

Description

  The present invention relates to a foam skin cleanser.

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

For example, Patent Document 1 discloses an aerosol type skin cleanser containing the following components (A) to (E).
(A) N-acylglycine type or N-acylmethylalanine type amino acid surfactant (B) polyglycerol fatty acid ester (C) polyhydric alcohol (D) liquefied petroleum gas (E) carbon dioxide gas

JP2012-240985A

  However, the foam skin cleansing agent using liquefied petroleum gas or the like as a propellant as disclosed in Patent Document 1 may cause irritation to the skin, and is required to reduce this irritation. Moreover, there are many users who ask for the creamy foam quality with a good touch as the foam quality of the foam discharged from the aerosol container.

  An object of the present invention is to provide a creamy foamy foam skin cleanser that has low skin irritation.

The present invention solves the above problems,
A foam skin cleansing agent in which the stock solution and propellant are filled in an aerosol container,
The stock solution contains 2.0 to 18.0% by mass of an anionic surfactant and water, and the anionic surfactant contains a fatty acid salt and an amino acid surfactant,
The propellant contains trans-1,3,3,3-tetrafluoropropene;
In the total amount of the propellant and the stock solution, the content of the propellant, from 6.0 to 20.0% by mass is, in the anionic surfactant, the content of said fatty acid salt, Ru 50.0 to 90.0% by mass, about the form skin cleanser.

  ADVANTAGE OF THE INVENTION According to this invention, the irritation | stimulation to skin is low and can provide a creamy foamy foam skin cleansing agent.

  The foam skin cleanser of the present invention is one in which an aerosol container is filled with a stock solution and a propellant. The foam skin cleansing material of the present invention forms bubbles when used, that is, when discharged from an aerosol container.

  Since the foam skin cleansing material of the present invention contains trans-1,3,3,3-tetrafluoropropene as a propellant, the skin is compared with the case where a propellant composed only of liquefied petroleum gas is used. Irritation is reduced, and the foam quality is also creamier. Hereinafter, each component of the foam skin cleansing material of the present invention will be described.

  The stock solution contains an anionic surfactant and water as essential components.

  Examples of the anionic surfactant include fatty acid salts and amino acid surfactants. Especially, it is preferable that anionic surfactant contains a fatty acid salt from a viewpoint of obtaining creamy foam quality. Only one type of anionic surfactant may be used, or two or more types may be used.

  In conventional foam skin cleansing materials using propellants consisting only of liquefied petroleum gas, since fatty acid salts are highly irritating when anionic surfactants are used, especially delicate areas such as facial cleansers are used. It is not suitable for cleaning applications. However, in the foam skin cleanser of the present invention, even if a fatty acid salt is used as the anionic surfactant, the irritation is reduced to a level at which there is no problem in use of the facial cleanser. Moreover, when a fatty acid salt is used as the anionic surfactant in the foam skin cleanser of the present invention, a very creamy foam can be obtained. Furthermore, the cleaning power is further improved, which is preferable.

  The fatty acid in the fatty acid salt is not particularly limited, but for example, higher fatty acids having 12 to 18 carbon atoms such as lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid; plants such as olive oil, coconut oil, palm oil, and cottonseed oil Animal fats and oils such as fish oil and beef tallow. Among these, from the viewpoint of further improving the detergency and foaming power, higher fatty acids having 12 to 18 carbon atoms are preferable, and lauric acid, myristic acid, palmitic acid, and stearic acid are particularly preferable.

Examples of fatty acid salts include alkali metal salts and organic amine salts. Although it does not specifically limit as a base which forms the salt in a fatty acid salt, For example, alkanolamines, such as inorganic bases, such as sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate; monoethanolamine, diethanolamine, triethanolamine, And organic bases such as trimethylamine and triethylamine. Among these, alkanolamine is preferable from the viewpoint of formulation stability, and triethanolamine is particularly preferable.
Only 1 type may be used for a fatty acid salt, and 2 or more types may be used for it.

  As the fatty acid salt, a fatty acid salt prepared in advance as a salt may be used, or a fatty acid and a base may form a salt in the stock solution.

  The content of the fatty acid salt in 100% by mass of the anionic surfactant is preferably 50.0 to 90.0% by mass and more preferably 70.0 to 85.0% by mass from the viewpoint of obtaining a creamy foam. preferable. In addition, content of the said fatty acid is the total amount of content of all the fatty acid salts contained in an anionic surfactant.

  Examples of amino acid surfactants include N-acyl sarcosine salts, N-acyl glutamates, N-acyl methyl alanine salts, N-acyl glycine salts, and the like. Examples of the salt used include metal salts such as sodium, potassium, magnesium, aluminum and titanium; alkanolamine salts such as monoethanolamine, diethanolamine and triethanolamine; ammonium salts and the like.

Specific examples of the amino acid surfactant include N-acyl sarcosine salts such as lauroyl sarcosine potassium, lauroyl sarcosine triethanolamine, myristoyl sarcosine sodium, coconut oil fatty acid sarcosine sodium; lauroyl glutamate sodium, lauroyl glutamate potassium, lauroyl glutamate Triethanolamine, sodium myristoyl glutamate, potassium myristoyl glutamate, potassium stearoyl glutamate, disodium stearoyl glutamate, potassium cocoyl glutamate, coconut oil fatty acid acyl glutamate sodium, coconut oil fatty acid acyl glutamate triethanolamine, coconut oil fatty acid / cured tallow fatty acid acyl glutamate N-acylglutami such as sodium Acid salts; N-acylmethylalanine salts such as sodium lauroylmethylalanine, lauroylmethylalanine triethanolamine, sodium myristoylmethylalanine, sodium coconut oil fatty acid methylalanine; coconut oil fatty acid acylglycine potassium, coconut oil fatty acid acylglycine sodium, etc. N-acylglycine salts and the like can be mentioned. Among these, N-acylglutamate is preferable from the viewpoints of detergency, foamability and formulation stability.
Only one type of amino acid surfactant may be used, or two or more types may be used.

  Examples of the anionic surfactant include, in addition to the above, alkyl sulfate ester salts such as sodium lauryl sulfate, triethanolamine lauryl sulfate, sodium myristyl sulfate, sodium stearyl sulfate, sodium oleyl sulfate, sodium cetyl sulfate; Polyoxyethylene alkyl ether sulfates such as sodium ethylene lauryl ether sulfate and sodium polyoxyethylene myristyl ether sulfate; α-olefin sulfonates such as sodium tetradecene sulfonate; sodium myristoyl methyl taurine, sodium palmitoyl methyl taurine, stearoyl methyl taurine N-acylmethyl taurine such as sodium, oleoyl methyl taurine sodium, coconut oil fatty acid methyl taurine sodium Sulfosuccinic acid alkyl salts such as dioctyl sodium sulfosuccinate and disodium sulfosuccinate; sulfosuccinic acid polyoxyethylene alkyl salts such as polyoxyethylene lauryl disodium sulfosuccinate; sodium lauryl phosphate, sodium cetyl phosphate, diethanolamine cetyl phosphate, etc. Monoalkyl phosphate ester salt; sodium polyoxyethylene lauryl ether phosphate, sodium polyoxyethylene cetyl ether phosphate, sodium polyoxyethylene oleyl ether phosphate, sodium polyoxyethylene alkylphenyl ether phosphate, polyoxyethylene alkylphenyl ether Polyoxyethylene alkyl ether phosphate esters such as triethanolamine phosphate; Sodium rilglycol acetate (sodium dodecane-1,2-diol acetate), potassium lauryl glycol acetate, sodium myristyl glycol acetate, potassium myristyl glycol acetate, sodium palmityl glycol acetate, potassium palmityl glycol acetate, sodium stearyl glycol acetate, stearyl glycol Examples thereof include alkyl ether glycol acetates such as potassium acetate, sodium behenyl glycol acetate, and potassium behenyl glycol acetate.

  The content of the amino acid surfactant in 100% by mass of the anionic surfactant is preferably 10.0 to 40.0% by mass and more preferably 15.0 to 25.0% by mass from the viewpoint of foam quality. preferable. In addition, content of the said amino acid type surfactant is a total amount of content of all the amino acid type surfactants contained in an anionic surfactant.

  The content of the anionic surfactant in 100% by mass of the stock solution is 2.0% by mass or more from the viewpoint of preventing liquefaction of the discharged product, that is, from the viewpoint of forming a suitable foam from the aerosol container. 4.0 mass% or more is preferable, 5.0 mass% or more is more preferable, and from the viewpoint of preventing solidification of the discharged material, that is, from the viewpoint of the discharged material from the aerosol container forming appropriate bubbles, 18.0 15.0 mass% or less is preferable, and 10.0 mass% or less is more preferable. That is, the content of the anionic surfactant in 100% by mass of the stock solution is 2.0 to 18.0% by mass, preferably 3.0 to 15.0% by mass, and 5.0 to 10.0% by mass. % Is more preferable.

  The stock solution may further contain other surfactants such as nonionic surfactants such as polyoxyethylene cetyl ether as long as the effects of the present invention are not impaired.

  The content of water in 100% by mass of the stock solution is not particularly limited, but is preferably 60.0% by mass or more, more preferably 70.0% by mass or more, from the viewpoint of preventing solidification of the discharged material. From the viewpoint of preventing liquefaction of the product, it is preferably 98.0% by mass or less, more preferably 90.0% by mass or less. That is, the content of water in 100% by mass of the stock solution is preferably 60.0 to 98.0% by mass, and more preferably 70.0 to 90.0% by mass.

  The stock solution is not particularly limited. For example, perfume; ethanol; silicone oil such as cyclopentasiloxane, hydrogen dimethicone, caprylyl methicone, dimethicone; fatty acid ester such as isopropyl myristate, ethylhexyl palmitate, cetyl 2-ethylhexanoate; Polyhydric alcohols such as 1,3-butylene glycol, dipropylene glycol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, 1,2-decanediol, glycerin, polyethylene glycol; sorbitol Sugar alcohols such as maltitol; preservatives such as phenoxyethanol, octoxyglycerin and methylparaben; cooling agents such as menthol, menthyl glyceryl ether, camphor and peppermint oil; glycyrrhizic acid Anti-inflammatory agents such as potassium and stearyl glycyrrhizinate; plant extract extracts such as peony, button pi, loquat and aloe; thickening polymers such as carboxyvinyl polymer, hydroxyethyl cellulose and 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 also be included.

  The propellant contains trans-1,3,3,3-tetrafluoropropene (trans-1,3,3,3-tetrafluoroprop-1-ene: HFO-1234ze) as an essential component.

  The content of trans-1,3,3,3-tetrafluoropropene in 100% by mass of the propellant is 70.0 to 100% by mass from the viewpoint of realizing low irritation and creamy foam quality. Preferably, 80.0-100 mass% is more preferable, 90.0-100 mass% is further more preferable, and 100 mass% is further more preferable.

  The propellant is not particularly limited, and examples thereof include gases such as air, nitrogen, carbon dioxide, and nitrous oxide (particularly compressed gas); liquefied petroleum gas (LPG), dimethyl ether (DME), A liquefied gas such as isopentane or fluorocarbon may be contained. The said propellant may use only 1 type and may use 2 or more types.

  The content of the propellant in the total amount of the stock solution and the propellant of 100% by mass is 6.0% by mass or more and 8.0% by mass from the viewpoint of preventing the liquefaction of the discharged matter due to too little propellant. % Or more, and from the viewpoint of preventing the foam from becoming coarse and obtaining creamy foam quality, it is 20.0% by mass or less, and preferably 15.0% by mass or less. That is, the content of the propellant in the total amount of 100% by mass of the stock solution and the propellant is 6.0 to 20.0% by mass, and preferably 8.0 to 15.0% by mass.

  The foam skin cleanser of the present invention can be produced by a conventional method.

  The foam skin cleanser of the present invention is a skin cleanser used to clean the 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 cleanser of the present invention has a low skin irritation and a creamy foam, it is particularly suitable for a delicate cleanser such as a facial 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 1-7 [Preparation of foam skin cleanser] (Example 2 is a reference example)
After the stock solution having the composition described in Tables 1 and 2 was filled into an aerosol container (φ35 mm × 105 mm, aluminum can, full container volume: 91 ml, filling capacity 50 g), and an aerosol valve was clinched into the container, Table 1, The propellant having the composition described in 2 was filled from the stem, and a suitable spout was attached to obtain a foam skin cleanser.

[Evaluation of foam skin cleanser]
The foam skin cleansing agents prepared in the examples and comparative examples were evaluated as follows.

<Skin irritation>
About 5 g of foam skin cleanser prepared in Examples and Comparative Examples was discharged, and the discharged foam was applied so as to extend over the entire face wetted with water. The presence or absence of tingling irritation immediately after application to after washing was evaluated according to the following criteria. The results are shown in Tables 1 and 2 below.
○ (Good): I do not feel a tingling stimulus △ (Inadequate): I feel a slight tingling stimulus × (Poor): I feel a tingling stimulus XX (Very bad): Strong tingling I feel irritation

<Foam quality>
About 5 g of the foam skin cleanser prepared in Examples and Comparative Examples was discharged, and the appearance of the discharged foam was visually observed and evaluated. The results are shown in Tables 1 and 2 below.

<Dischargeability of foam>
About 5 g of the foam skin cleanser prepared in Examples and Comparative Examples was discharged, and the sprayed state at the time of discharge was visually observed and evaluated. The results are shown in Tables 1 and 2 below.

  Details of each raw material in Examples and Comparative Examples are as follows. In addition, the amount described in Tables 1 and 2 is not the amount of merchandise but the amount of each component (amount of active ingredient).

N-coconut oil fatty acid acyl-L-glutamic acid triethanolamine (manufactured by Asahi Kasei Chemicals Corporation, trade name: Amino Surfact ACMT-L)
Myristic acid (Emery Oleochemicals, trade name: EDENOR C14-99 (C))
Palmitic acid (Emery Oleochemicals, trade name: EDENOR C16-98 MY)
Triethanolamine (made by Japan Chemtech Co., Ltd., trade name: TEA-99)
Polyoxyethylene cetyl ether (Aoki Yushi Kogyo Co., Ltd., trade name: BROWNON CH-320L)
Highly polymerized polyethylene glycol (product name: POLYOX WSR-301, manufactured by Union Carbide)
Polyethylene glycol 400 (manufactured by Sanyo Chemical Industries, trade name: PEG-400)
Concentrated glycerin (Sakamoto Yakuhin Kogyo Co., Ltd., trade name: Concentrated glycerin for makeup)
Sorbitol (product name: Sorbit L-70, manufactured by Mitsubishi Corporation Foodtech)
Phenoxyethanol (trade name: Phenoxyethanol-S, manufactured by Yokkaichi Gosei Co., Ltd.)
Trans-1,3,3,3-tetrafluoropropene (Honeywell Japan)

  From the comparison between Examples and Comparative Examples 1 and 2, the foam skin cleanser of the present invention containing trans-1,3,3,3-tetrafluoropropene as a propellant has low irritation and creamy foam quality. It can be seen that it is.

  In Comparative Examples 1 and 2 using only LPG as a propellant, the density of the foam is lowered, resulting in a light or coarse foam quality. In addition, irritation to the skin is increased. In particular, in Comparative Example 1 using a fatty acid salt as an anionic surfactant, irritation to the skin is particularly high, and in Comparative Example 2 where no fatty acid salt is used, the foam density is particularly reduced. Coarse foam quality.

  In addition, Examples 1 and 3 to 9 using a fatty acid salt as an anionic surfactant were creamy foam having finer foam quality than Example 2 not using a fatty acid salt.

  From the comparison between Examples and Comparative Examples 3 to 7, by setting the amount of anionic surfactant and propellant within a predetermined range, the foam ejection property becomes suitable and a creamy foam quality can be achieved. Recognize.

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

Claims (4)

A foam skin cleansing agent in which the stock solution and propellant are filled in an aerosol container,
The stock solution contains 2.0 to 18.0% by mass of an anionic surfactant and water, and the anionic surfactant contains a fatty acid salt and an amino acid surfactant,
The propellant contains trans-1,3,3,3-tetrafluoropropene;
In the total amount of the propellant and the stock solution, the content of the propellant, from 6.0 to 20.0% by mass is, in the anionic surfactant, the content of said fatty acid salt, Ru 50.0 to 90.0% by mass, foam skin cleanser.   The foam skin cleanser according to claim 1, wherein the content of the water in the stock solution is 60.0 to 98.0 mass%.   The foam skin cleanser according to claim 1 or 2, wherein the amino acid surfactant comprises N-acyl glutamate. The foam skin cleanser according to any one of claims 1 to 3 , which is a face wash.