Cleansing agent

Abstract

To provide a cleanser having a melting use feeling and high cleansing power.SOLUTION: A cleanser contains (A)-(D): (A) a nonionic surfactant, (B) mono alkyl phosphate, (C) higher alcohol, (D) at least one selected from carbonic acid dicaprylyl and dicaprylyl ether.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a cleansing agent. [Background technology]

[0002] Oil-based liquid cleansing compositions are commercially available for the purpose of removing skin dirt and oily makeup. Oil-based liquid cleansing compositions have superior cleansing effects compared to emulsion-type cream and emulsion cleansing compositions, or aqueous liquid and gel cleansing compositions. However, because oil cleansing agents are composed of oily ingredients, their viscosity depends on the oils they contain, and they tend to drip when picked up or applied to the skin, making them difficult to use during cleansing.

[0003] Therefore, in order to increase the viscosity of oil cleansing agents and improve their usability, an oily gel composition (Patent Document 1) has been proposed, which uses a self-assembly formed by a monoalkyl phosphate ester and a specific neutralizing agent, as shown in Patent Document 1, for example. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2017 / 209182 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the oily gel composition disclosed in Patent Document 1 above has the problem of poor cleansing power. The present invention has been made in view of the above circumstances, and has as its object to provide a cleansing agent that has a melting feeling when used and has excellent cleansing power. [Means for solving the problem]

[0006] A cleansing agent containing (A) to (D). (A) Nonionic surfactant (B) Monoalkyl phosphate ester salt (C) Higher alcohol (D) one or two selected from dicaprylyl carbonate and dicaprylyl ether [Effects of the Invention]

[0007] The cleansing agent of the present invention has a melting feeling when used and exhibits the effect of excellent cleansing power. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an embodiment of the present invention will be described.

[0009] The cleansing agent of the present invention can be used in any of cosmetics, quasi-drugs, pharmaceuticals, etc.

[0010] The present invention uses (A) a nonionic surfactant. The type of nonionic surfactant is not particularly limited, but it is preferable to use a nonionic surfactant with an HLB value of 5 or more, preferably 7 or more, and 20 or less, and even more preferably 17 or less, from the viewpoint of not feeling dry after cleansing. Examples of such nonionic surfactants include polyglycerin fatty acid esters, fatty acid polyoxyethylene glyceryl, sorbitan fatty acid esters, and polyoxyethylene alkyl ethers. Here, the HLB (hydrophile-lipophile balance) value generally indicates the affinity of a nonionic surfactant to water and oil, and can be determined by the Griffin method.

[0011] Examples of polyglycerin fatty acid esters include polyglyceryl-10 isostearate (HLB value: 14), polyglyceryl-2 isostearate (HLB value: 5), polyglyceryl-4 isostearate (HLB value: 8), polyglyceryl-6 isostearate (HLB value: 11), polyglyceryl-10 oleate (HLB value: 13), polyglyceryl-2 oleate (HLB value: 6), polyglyceryl-4 oleate (HLB value: 9), polyglyceryl-6 oleate (HLB value: 12), polyglyceryl-2 caprylate (HLB value: 8), polyglyceryl-6 caprylate (HLB value: 10), polyglyceryl-10 diisostearate (HLB value: 11), dioleic acid Examples include polyglyceryl-10 (HLB value: 12), polyglyceryl-6 dicaprate (HLB value: 10), polyglyceryl-10 distearate (HLB value: 12), polyglyceryl-10 stearate (HLB value: 14), polyglyceryl-2 stearate (HLB value: 5), polyglyceryl-4 stearate (HLB value: 6), polyglyceryl-2 sesquicaprylate (HLB value: 8), polyglyceryl-10 tristearate (HLB value: 8), polyglyceryl-10 myristate (HLB value: 15), polyglyceryl-4 laurate (HLB value: 10), polyglyceryl-6 laurate (HLB value: 14), and polyglyceryl-10 laurate (HLB value: 14.8).

[0012] Examples of fatty acid polyoxyethylene glyceryl include PEG-5 glyceryl stearate (HLB value: 8), PEG-10 glyceryl stearate (HLB value: 11), PEG-15 glyceryl stearate (HLB value: 13), PEG-20 glyceryl stearate (HLB value: 14), PEG-30 glyceryl stearate (HLB value: 15), PEG-40 glyceryl stearate (HLB value: 16), PEG-3 glyceryl isostearate (HLB value: 6), PEG-5 glyceryl isostearate (HLB value: 8), and PEG-12 glyceryl isostearate (HLB value: 14). EG-6 Glyceryl (HLB value: 8), PEG-8 Glyceryl Isostearate (HLB value: 10), PEG-10 Glyceryl Isostearate (HLB value: 10), PEG-15 Glyceryl Isostearate (HLB value: 12), PEG-20 Glyceryl Isostearate (HLB value: 13), PEG-25 Glyceryl Isostearate (HLB value: 14), PEG-30 Glyceryl Isostearate (HLB value: 15), PEG-40 Glyceryl Isostearate (HLB value: 15), PEG-50 Glyceryl Isostearate (HLB value: 16) ), PEG-60 Glyceryl Isostearate (HLB Value: 16), PEG-10 Glyceryl Diisostearate (HLB Value: 7), PEG-20 Glyceryl Diisostearate (HLB Value: 10), PEG-30 Glyceryl Diisostearate (HLB Value: 12), PEG-60 Glyceryl Diisostearate (HLB Value: 14), PEG-10 Glyceryl Tristearate (HLB Value: 5), PEG-15 Glyceryl Tristearate (HLB Value: 7), PEG-20 Glyceryl Tristearate (HLB Value: 8), PEG-20 Trioleate Glyceryl (HLB value: 8), PEG-30 glyceryl trioleate (HLB value: 10), PEG-40 glyceryl trioleate (HLB value: 11), PEG-50 glyceryl trioleate (HLB value: 12), PEG-60 glyceryl trioleate (HLB value: 13), PEG-10 glyceryl triisostearate (HLB value: 5), PEG-15 glyceryl triisostearate (HLB value: 7), PEG-20 glyceryl triisostearate (HLB value: 8), PEG-30 glyceryl triisostearate (HLB value: 10),Examples include PEG-40 glyceryl triisostearate (HLB value: 11), PEG-50 glyceryl triisostearate (HLB value: 12), PEG-60 glyceryl triisostearate (HLB value: 13), and PEG-9 glyceryl laurate (HLB value: 12).

[0013] Examples of sorbitan fatty acid esters include sorbitan isostearate (HLB value: 8), sorbitan olivate (HLB value: 9), sorbitan oleate (HLB value: 9), sorbitan stearate (HLB value: 8), and sorbitan sesquiisostearate. (HLB value: 6), sorbitan sesquioleate (HLB value: 6), sorbitan palmitate (HLB value: 7), sorbitan coconut fatty acid (HLB value: 11), sorbitan laurate (HLB value: 9), etc.

[0014] Examples of polyoxyethylene alkyl ethers include polyoxyethylene cetyl ethers such as ceteth-2 (HLB value: 5), ceteth-3 (HLB value: 6), ceteth-4 (HLB value: 7), ceteth-5 (HLB value: 8), ceteth-7 (HLB value: 10), ceteth-10 (HLB value: 11), ceteth-12 (HLB value: 12), ceteth-15 (HLB value: 13), ceteth-17 (HLB value: 13), ceteth-20 (HLB value: 14), ceteth-25 (HLB value: 15), and ceteth-30 (HLB value: 15); and polyoxyethylene stearyl ethers such as ceteth-2, ceteth-30 (HLB value: 15). Teareth-3 (HLB value: 6), steareth-5 (HLB value: 8), steareth-6 (HLB value: 8), steareth-8 (HLB value: 9), steareth-10 (HLB value: 11), steareth-11 (HLB value: 11), steareth-12 (HLB value: 11), steareth-15 (HLB value: 12), steareth-20 (HLB value: 13), steareth-25 (HLB value: 14), steareth-30 (HLB value: 15), steareth-40 (HLB value: 16), polyoxyethylene lauryl ethers laureth-3 (HLB value: 8), laureth-5 (HLB value: 9), Laureth-7 (HLB value: 11), Laureth-9 (HLB value: 12), Laureth-10 (HLB value: 12), Laureth-12 (HLB value: 13), Laureth-15 (HLB value: 14), Laureth-20 (HLB value: 15), Laureth-25 (HLB value: 15), Laureth-30 (HLB value: 16), Laureth-50 (HLB value: 17), Polyoxyethylene Behenyl Ethers Beheneth-5 (HLB value: 7), Beheneth-10 (HLB value: 9), Beheneth-20 (HLB value: 12), Beheneth-30 (HLB value: 14), Polyoxyethylene PEG-5 phytosterol (HLB value: 7), PEG-10 phytosterol (HLB value: 9), PEG-20 phytosterol (HLB value: 12), PEG-25 phytosterol (HLB value: 13), PEG-30 phytosterol (HLB value: 14), which are ethylene phytosteryl ethers; and cholesteryl ethers such as cholesterol-5 (HLB value: 7), cholesterol-10 (HLB value: 10), cholesterol-15 (HLB value: 11), cholesterol-20 (HLB value: 12), cholesterol-24 (HLB value: 13), and cholesterol-30 (HLB value: 14).Polyoxyethylene isoalcohol ethers: Isoceteth-5 (HLB value: 8), Isoceteth-10 (HLB value: 11), Isoceteth-15 (HLB value: 13), Isoceteth-20 (HLB value: 14), Isoceteth-25 (HLB value: 15), Isosteareth-5 (HLB value: 8), Isosteareth-10 (HLB value: 11), and Isosteareth-15 (HLB value: 12), isosteareth-20 (HLB value: 13), isosteareth-25 (HLB value: 14), octyldodeceth-5 (HLB value: 7), octyldodeceth-10 (HLB value: 10), octyldodeceth-16 (HLB value: 12), octyldodeceth-20 (HLB value: 13), octyldodeceth-25 (HLB value: 14), etc.

[0015] In the present invention, among these nonionic surfactants, it is preferable to use one or more selected from polyglycerol fatty acid esters and fatty acid polyoxyethylene glyceryl, and it is more preferable to use polyglycerol fatty acid esters in terms of compatibility with makeup cosmetics, dirt removal, and no dry feeling after rinsing.

[0016] In the present invention, the content of component (A) is preferably 8% by mass or more, more preferably 10% by mass or more, even more preferably 12% by mass or more, preferably 40% by mass or less, even more preferably 35% by mass or less, even more preferably 30% by mass or less, preferably 8 to 40% by mass, even more preferably 10 to 35% by mass, and even more preferably 12 to 30% by mass, based on the total amount of the cleansing agent of the present invention. If the content is less than 8% by mass, dirt removal and a non-drying feeling after washing may not be achieved. If the content is more than 40% by mass, the nonionic surfactant may cause stickiness.

[0017] In the present invention, (B) a monoalkyl phosphate salt is used. The alkyl group constituting the monoalkyl phosphate salt is an alkyl group having 12 to 32 carbon atoms, more preferably 12 to 22 carbon atoms. The alkyl group may be linear or branched, and may be saturated or unsaturated. The most preferred alkyl group is a cetyl group. In the present invention, the monoalkyl phosphate salt may be a salt formed in advance, or may be formed by reacting the monoalkyl phosphate with a base during production.

[0018] The base that forms the salt may be a basic amino acid, an organic base, or an inorganic base. Examples of basic amino acids include arginine, lysine, histidine, and tryptophan. Examples of organic bases include monoethanolamine, diethanolamine, triethanolamine, aminomethylpropanol, aminomethylpropanediol, aminoethylpropanediol, and trishydroxymethylaminomethane. Examples of inorganic bases include sodium hydroxide and potassium hydroxide. These may be used alone or in combination. Of these, preferred is one or more selected from arginine, triethanolamine, and aminomethylpropanol, with arginine being particularly preferred. The base is preferably used in an amount ranging from 0.5 to 1.5 molar equivalents relative to the monoalkyl phosphate ester.

[0019] Commercially available monoalkyl phosphate salts include NIKKOL Phosten HLP (manufactured by Nikko Chemicals Co., Ltd.), which is a lauryl phosphate ester that has not formed a salt, NIKKOL Purephos α (manufactured by Nikko Chemicals Co., Ltd.), which is a cetyl phosphate ester, and NIKKOL Purephos LC (manufactured by Nikko Chemicals Co., Ltd.), which is a pre-salted hexyldecyl arginine phosphate.

[0020] In the present invention, the content of component (B) is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, preferably 10% by mass or less, even more preferably 5% by mass or less, even more preferably 3% by mass or less, preferably 0.01 to 10% by mass, even more preferably 0.05 to 5% by mass, and even more preferably 0.1 to 3% by mass, based on the total amount of the cleansing agent of the present invention, in terms of usability.

[0021] The cleansing agent of the present invention uses (C) a higher alcohol. The higher alcohol is not particularly limited as long as it can be used in the fields of cosmetics, pharmaceuticals, quasi-drugs, etc., and the fatty chain may be linear or branched, and may be saturated or unsaturated. The alcohol may be monohydric or a polyhydric alcohol having two or more hydric groups, but for the purposes of the present invention, it is preferable to use a monohydric higher alcohol. Examples of such higher alcohols include dodecanol (lauryl alcohol), tridodecanol, tetradodecanol (myristyl alcohol), pentadecanol, hexadecanol (cetyl alcohol), heptadecanol, octadecanol (stearyl alcohol), nonadecanol, icosanol (arachyl alcohol), heneicosanol, docosanol (behenyl alcohol), tricosanol, tetracosanol (carnaubyl alcohol), pentacosanol, hexacosanol (ceryl alcohol), elaidyl alcohol, and oleyl alcohol. In the present invention, saturated linear monohydric alcohols are preferred from the viewpoint of stability over time. In the cleansing agent of the present invention, these higher alcohols may be used alone or in combination of two or more. Particularly preferred higher alcohols include one or more selected from lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, arachyl alcohol, and behenyl alcohol.

[0022] The content of higher alcohol in the cleansing agent of the present invention is not particularly limited, but is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, preferably 10% by mass or less, more preferably 7% by mass or less, preferably 0.1 to 10% by mass, more preferably 0.2 to 7% by mass, based on the total amount of the cleansing agent.

[0023] The cleansing agent of the present invention contains one or two oily components (D) selected from dicaprylyl carbonate and dicaprylyl ether. As the dicaprylyl carbonate, commercially available Cetiol CC (manufactured by BASF) can be used, and as the dicaprylyl ether, commercially available Cetiol OE Deo (manufactured by BASF) and COSMACOL OE (manufactured by Sasol Japan) can be used.

[0024] The content of one or two compounds selected from dicaprylyl carbonate and dicaprylyl ether in the cleansing agent of the present invention is not particularly limited, but is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, preferably 20% by mass or less, more preferably 10% by mass or less, preferably 0.1 to 20% by mass, more preferably 0.5 to 10% by mass, based on the total amount of the cleansing agent.

[0025] The cleansing agent of the present invention preferably contains an ester oil, ether oil, or hydrocarbon oil other than one or two selected from dicaprylyl carbonate and dicaprylyl ether.

[0026] Examples of such ester oils include ester oils of straight-chain fatty acids and lower alcohols such as isopropyl myristate, butyl myristate, isopropyl palmitate, ethyl stearate, butyl stearate, and ethyl oleate; ester oils of straight-chain fatty acids and straight-chain higher alcohols such as cetyl caprylate, hexyl laurate, caprylyl laurate, decyl laurate, decyl myristate, decyl oleate, and oleyl oleate; methylheptyl laurate, isostearyl laurate, methylheptyl myristate, isotridecyl myristate; Ester oils of straight-chain fatty acids and branched higher alcohols such as 2-ethylhexyl myristate, isostearyl myristate, 2-octyldodecyl myristate, 2-ethylhexyl palmitate, methylheptyl palmitate, 2-hexyldecyl palmitate, isostearyl palmitate, 2-ethylhexyl stearate, 2-hexyldecyl stearate, isodecyl oleate, 2-octyldodecyl oleate; ester oils of branched fatty acids and lower alcohols such as ethyl isostearate, isopropyl isostearate, isobutyl isostearate; Ester oils, ester oils of branched fatty acids and linear higher alcohols such as cetyl 2-ethylhexanoate, cetostearyl 2-ethylhexanoate, hexyl isostearate, and decyl isostearate, 2-octyldodecyl neopentanoate, 2-hexyldecyl 2-ethylhexanoate, isostearyl 2-ethylhexanoate, 2-ethylhexyl isononanoate, 2-hexyldecyl dimethyloctanoate, 2-octyldodecyl dimethyloctanoate, 2-ethylhexyl isopalmitate, methylheptyl isostearate, and 2-hexyl isostearate. Ester oils of branched fatty acids and branched higher alcohols such as 2-octyldodecyl isostearate, isostearyl isostearate, and 2-octyldodecyl isostearate, ethylene glycol di-2-ethylhexanoate, ethylene glycol dioleate, propylene glycol dicaprylate, propylene glycol di(capryl-caprate), propylene glycol dicaprate, propylene glycol dioleate, neopentyl glycol dicaprate, neopentyl glycol dicaprylate, neopentyl glycol di-2-ethylhexanoate, glyceryl tricaprylate,Examples of suitable oils include ester oils of fatty acids and polyhydric alcohols, such as glyceryl tricaprate, glyceryl tri-2-ethylhexanoate, caprylic / capric triglyceride, glyceryl triisopalmitate, glyceryl triisostearate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, and pentaerythritol tetra-2-ethylhexanoate. Vegetable oils containing natural triglycerides as their main component, such as olive oil, safflower oil, rice oil, rice germ oil, jojoba oil, corn oil, and corn germ oil, can also be used.

[0027] The ether oil is not particularly limited as long as it can be blended into ordinary cosmetics and quasi-drugs, and examples of such ether oils include cetyl dimethyl butyl ether, diisononyl ether, dicapryl ether, dilauryl ether, diisostearyl ether, dioctyl ether, nonylphenyl ether, dodecyl dimethyl butyl ether, cetyl dimethyl butyl ether, and cetyl isobutyl ether.

[0028] The hydrocarbon oil is not particularly limited as long as it can be blended into ordinary cosmetics and quasi-drugs, and examples of such hydrocarbon oils include α-olefin oligomers, squalane, liquid isoparaffin, and liquid paraffin.

[0029] The form of the cleansing agent of the present invention is not particularly limited, and it may be in the form of an oil, a gel, a solid, or the like.

[0030] In addition to the above-mentioned components, the cleansing agent of the present invention may contain optional components used in ordinary cosmetics and quasi-drugs to the extent that the effects of the present invention are not impaired. Specific examples of such optional components include oils, surfactants, thickeners, preservatives, fragrances, moisturizers, antioxidants, anti-inflammatory agents, and antibacterial agents.

[0031] The cleansing agent of the present invention can be prepared by a conventional method. [Example]

[0032] Examples of the present invention will be described below. These examples are merely examples of the present invention and are not intended to limit the scope of the present invention. The blend amounts are expressed in mass % unless otherwise specified.

[0033] The evaluation methods for the examples and comparative examples of the present invention are described below.

[0034] [Sensory evaluation] The usability and cleansing power were evaluated by three skin care specialist sensory evaluators who each used the product independently according to the standard method and then agreed to evaluate it according to the following evaluation criteria. "Ease of use (melting sensation)" and "Cleansing power" ◎:Excellent ○:Excellent △: Not very good ×: Not good

[0035] Cleansing agents were prepared and evaluated according to the standard method based on the information in Table 1. The results are also shown in Table 1.

[0036] [Table 1]

[0037] As shown in Table 1, the cleansing agents according to the examples of the present invention had a melting sensation when used and had excellent cleansing power.

Claims

[Claim 1] A cleansing agent containing (A) to (D). (A) Polyglycerol fatty acid ester 8 to 40% by mass (B) Monoalkyl phosphate ester salt 0.01 to 10% by mass (C) 0.1 to 10% by mass of higher alcohol (D) 0.1 to 20% by mass of one or two types selected from dicaprylyl carbonate and dicaprylyl ether

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