Composition with high moisturizing effect

Abstract

Disclosed is a composition having an excellent moisturizing effect. The composition contains (A) one or more unbranched higher alcohols having 14-22 carbon atoms, (B) one or more anionic surfactants, and (C) water, and the ratio of oil components other than the component (A) to the blended amount of the composition is 0.1 wt% or less.

Description

[0001] Citation of Related Applications

[0002] This patent application claims priority based on Japanese Patent Application No. 2022-212606 (filing date: December 28, 2022). The entire disclosure of the prior patent application is incorporated herein by reference as part of this specification. Technical Field

[0003] The present invention relates to a composition having a high moisturizing effect. Background Art

[0004] In recent years, in the field of liquid cosmetics, a turbid appearance has been highly preferred. This may be because liquid cosmetics that become turbid give a moist feeling to the skin and have a stronger feeling of excellent moisturizing power, i.e., moisturizing ability, compared to transparent liquid cosmetics.

[0005] As a method for preparing such cosmetics, there is a method of emulsifying an oil component to make it whitish. However, if the emulsified particles are large, there is a problem of emulsion stratification. Therefore, in this field, in order to prevent such emulsion stratification, fine emulsified particles are often prepared by a method using mechanical force such as high-pressure emulsification or an interfacial science method such as the microemulsion method.

[0006] However, any method requires an oil component, and thus the prepared cosmetics have drawbacks such as stickiness and greasiness derived from the oil component.

[0007] In addition, for skin care products such as liquid cosmetics, moisturizing power is a basic property. In order to improve the moisturizing power of such skin care products, it has become a basic means to increase the amount of moisturizing agents, especially glycerin. However, increasing the blending amount of glycerin is not preferred from the viewpoint of stickiness and the like.

[0008] Therefore, the development of skin care products with high moisturizing power and a refreshing feeling has been ongoing.

[0009] For example, Patent Document 1 discloses an oil-in-water type emulsified cosmetic that does not give a slippery feeling of a thickening agent or an active agent, can obtain a good moist touch, a feeling of penetration into the skin, and a softening effect, and has good stability without viscosity reduction, separation, etc. even during long-term storage.

[0010] However, the development of refreshing skin care products is still being sought.

[0011] Prior Art Documents

[0012] Patent Documents

[0013] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2008-088129 Summary of the Invention

[0014] The inventors have found that a composition blended with specific components exhibits excellent moisturizing effects even without increasing the blending amount of glycerin. The present invention is based on this finding.

[0015] Accordingly, the present invention provides a composition having excellent moisturizing effects.

[0016] According to the present invention, the following technical solutions are provided.

[0017] (1) A composition comprising:

[0018] (A) one or more linear higher alcohols having 14 to 22 carbon atoms,

[0019] (B) one or more anionic surfactants, and

[0020] (C) water,

[0021] The proportion of the oil component other than the component (A) relative to the blending amount of the composition is 0.1% by weight or less.

[0022] (2) The composition according to (1), wherein the component (A) is one or more selected from behenyl alcohol, stearyl alcohol, and cetyl alcohol.

[0023] (3) The composition according to (1) or (2), wherein the component (B) is a salt having an acyl group.

[0024] (4) The composition according to any one of (1) to (3), wherein the component (B) is one or more selected from the group consisting of sodium N-stearoyl methyl taurate and sodium stearoyl glutamate.

[0025] (5) The composition according to any one of (1) to (4), further comprising (D) glycerol monoalkyl ether and / or glycerol monoalkyl ester.

[0026] (6) The composition according to (5), wherein the component (D) is batyl alcohol.

[0027] (7) The composition according to (5) or (6), wherein when the blending ratio (w / w) of the component (A) relative to the composition is CA, the blending ratio (w / w) of the component (B) is CB, and the blending ratio (w / w) of the component (D) is CD, (CA + CD) / CB is 3 to 25.

[0028] (8) The composition according to any one of (1) to (7), which is a cosmetic composition.

[0029] (9) An oil-in-water type emulsified composition comprising an aqueous phase in which an oil phase is dispersed, and the aqueous phase contains the composition according to any one of (1) to (7).

[0030] (10) The oil-in-water type emulsified composition according to (9), wherein the proportion of the compounding amount of the composition according to any one of (1) to (7) relative to the oil-in-water type emulsified composition is 0.1 to 90% by weight.

[0031] (11) The oil-in-water type emulsified composition according to (9) or (10), which is a cosmetic composition.

[0032] According to the present invention, there is provided a composition having excellent moisturizing effects. Detailed Description

[0033] According to one aspect of the present invention, there is provided a composition comprising (A) one or more unbranched higher alcohols having 14 to 22 carbon atoms, (B) one or more anionic surfactants, and (C) water. The proportion of the oil component other than the component (A) in the composition relative to the compounding amount of the composition is 0.1% by weight or less.

[0034] The component (A) in the present invention is one or more unbranched higher alcohols having 14 to 22 carbon atoms. Examples of such unbranched higher alcohols include myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, oleyl alcohol, etc. As the component (A) in the present invention, preferably one or more selected from behenyl alcohol, stearyl alcohol, and cetyl alcohol.

[0035] The compounding amount of the component (A) in the composition of the present invention is not particularly limited, and is preferably 0.1 to 1.0% by weight relative to the total amount of the composition.

[0036] The component (B) in the present invention is one or more anionic surfactants, usually surfactants used in cosmetics, pharmaceuticals, etc. Examples of such anionic surfactants include N-acylmethyl taurates (e.g., N-stearoyl methyl taurate, N-myristoyl methyl taurate, N-palmitoyl methyl taurate, etc.), acyl glutamates (e.g., stearoyl glutamate), acyl lactates, fatty acid soaps, etc. As the component (B) in the present invention, preferably salts having an acyl group, more preferably sodium salts having an acyl group, and more preferably one or more selected from the group consisting of sodium N-stearoyl methyl taurate and sodium stearoyl glutamate.

[0037] The compounding amount of the component (B) in the composition of the present invention is not particularly limited, and is preferably 0.03 to 0.3% by weight relative to the total amount of the composition.

[0038] The proportion of the oil component other than component (A) in the composition of the present invention relative to the total amount of the composition is 0.1% by weight or less. Such an oil component is not particularly limited as long as it is an oil component commonly used in cosmetics, pharmaceuticals, foods, etc. For example, specifically, silicone oils, liquid oils and fats, solid oils and fats, waxes, hydrocarbon oils, higher fatty acids, synthetic ester oils, etc. can be cited.

[0039] As the silicone oil in the present invention, for example, chain polysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane; cyclic polysiloxanes such as decamethylpolysiloxane, dodecamethylpolysiloxane, and tetramethyltetrahydropolysiloxane, etc. can be cited.

[0040] As the liquid oil and fat in the present invention, for example, avocado oil, camellia seed oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive fruit oil, rapeseed oil, egg yolk oil, sesame seed oil, almond oil, wheat germ oil, camellia oleifera abel oil, castor oil, linseed oil, safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, camellia flower oil, coconut oil, rice bran oil, paulownia oil, Japanese tung oil, jojoba seed oil, germ oil, triglyceride, glyceryl trioctanoate, glyceryl triisopalmitate, etc. can be cited.

[0041] As the solid oil and fat in the present invention, for example, cocoa seed butter, coconut oil, horse fat, hydrogenated coconut oil, palm oil, beef tallow, mutton fat, hydrogenated beef tallow, palm kernel oil, lard, beef bone oil, Chinese lacquer wax kernel oil, hydrogenated oil, beef foot oil, Chinese lacquer wax, hydrogenated castor oil, etc. can be cited.

[0042] As the waxes in the present invention, for example, beeswax, candelilla wax, cotton wax, carnauba wax, myrica wax, insect wax, spermaceti, montan wax, rice bran wax, lanolin, kapok wax, acetylated lanolin, lanolin oil, sugarcane wax, isopropyl lanolate, hexyl laurate, reduced lanolin, jojoba wax, anhydrous lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesteryl ether, polyethylene glycol lanolin fatty acid ester, POE hydrogenated lanolin alcohol ether, etc. can be cited.

[0043] As the hydrocarbon oil in the present invention, for example, liquid paraffin, ozokerite, squalene, pristane, paraffin wax, ceresine, squalene, petrolatum, microcrystalline wax, etc. can be cited.

[0044] As the higher fatty acid in the present invention, for example, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, 12-hydroxystearic acid, undecylenic acid, tall oil fatty acid, etc. can be cited.

[0045] Examples of the synthetic ester oil in the present invention include, for example, isopropyl myristate, cetyl ethylhexanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyl decyl dimethyl octanoate, cetyl lactate, myristyl lactate, acetylated lanolin, isocetyl stearate, isocetyl isostearate, cholesteryl 12 - hydroxystearate, ethylene glycol di - 2 - ethylhexanoate, dipentaerythritol fatty acid ester, N - alkyldiol monoisostearate, neopentyl glycol didecanoate, diisostearyl malate, glycerol di - 2 - heptylundecanoate, trimethylolpropane tri - 2 - ethylhexanoate, trimethylolpropane triisostearate, pentaerythritol tetra - 2 - ethylhexanoate, glycerol tri - 2 - ethylhexanoate, trimethylolpropane triisostearate, cetyl 2 - ethylhexanoate, 2 - ethylhexyl palmitate, glyceryl trimyristate, glycerol di - 2 - heptylundecanoate, methyl ricinoleate, oleic oil, cetostearyl alcohol, acetyl glyceride, 2 - heptylundecyl palmitate, diisobutyl adipate, 2 - octyldodecyl N - lauroyl - L - glutamate, di - 2 - heptylundecyl adipate, ethyl laurate, di - 2 - ethylhexyl sebacate, 2 - hexyldecyl myristate, 2 - hexyldecyl palmitate, 2 - hexyldecyl adipate, diisopropyl sebacate, 2 - ethylhexyl succinate, ethyl acetate, butyl acetate, amyl acetate, triethyl citrate, etc.

[0046] The composition of the present invention may contain a humectant. Examples of the composition in the present invention include, for example, polyhydric alcohols such as glycerol, 1,3 - butanediol, dipropylene glycol, propylene glycol; water - soluble polymers such as hyaluronic acid, chondroitin sulfate, etc.

[0047] According to a preferred embodiment of the present invention, the composition of the present invention further contains component (D), glycerol monoalkyl ether and / or glycerol monoalkyl ester. As component (D) in the present invention, glycerol monoalkyl ether is preferred, and batyl alcohol is more preferred.

[0048] The blending amount of component (D) in the composition of the present invention is not particularly limited. When the blending ratio (w / w) of component (A) relative to the total amount of the composition is set as CA, the blending ratio (w / w) of component (B) is set as CB, and the blending ratio (w / w) of component (D) is set as CD, (CA + CD) / CB is preferably 3 to 25, and more preferably 4 to 20.

[0049] The composition of the present invention may further contain optional additive components usually blended in cosmetics, etc. within the range not impairing the effects of the present invention as needed. Examples of such additive components include, for example, powders, surfactants, medicaments, metal ion chelating agents, lower alcohols, polyhydric alcohols, antioxidants, preservatives, food flavorings, etc.

[0050] The composition of the present invention can be made into a cosmetic composition. The cosmetic composition in the present invention refers to a composition used for cosmetic purposes.

[0051] The composition of the present invention can also be used to prepare an oil-in-water emulsion composition. Such an oil-in-water emulsion composition contains an aqueous phase in which an oil phase is dispersed, and has a constitution in which the composition of the present invention is contained in the aforementioned aqueous phase. Therefore, according to another aspect of the present invention, there is provided an oil-in-water emulsion composition containing an aqueous phase in which an oil phase is dispersed, and the aqueous phase in this oil-in-water emulsion composition contains the composition of the present invention. The proportion of the compounding amount of the composition of the present invention relative to this oil-in-water emulsion composition is not particularly limited, and is preferably 0.1 to 90% by weight. In addition, this oil-in-water emulsion composition can be used as a cosmetic composition.

[0052] Examples

[0053] The present invention will be specifically described based on the following examples, but the present invention is not limited to these examples. Unless otherwise specified, the content is expressed in % by weight.

[0054] The lotion-like composition with the formulation shown in Table 1 was obtained by the following operations: Dissolve Component B (sodium N-stearoyl methyl taurate) in a part of Component C (water) containing a humectant (glycerol and dipropylene glycol) at 70°C or higher, further add Component A (behenyl alcohol) and Component D (batyl alcohol) thereto to form a transparent single phase, maintain it at 70°C or higher, and slowly add it to a part of the hot Component C (water) for uniform dispersion, and then cool it to 35°C or lower. The prepared composition was applied to 4 panelists, and the moisturizing effect was measured by machine analysis. In the measurement of the moisturizing effect, a moisture meter (Corneometer: manufactured by Courage+Khazaka electronic GmbH) was used. The inner part of the forearm was used as the measurement site, and for each sample with the formulation shown in Table 1, 18 μL was applied to the application part within a frame of 9 cm 2 (3 cm × 3 cm), and the unapplied part was set as a negative control. Then, the value of the increase in the moisture content was calculated by subtracting the measurement result (moisture content) before application from the measurement results (moisture content) after 1 hour, 2 hours of application, and after washing with water (washing the application site with water 2 hours after application), respectively, and the moisturizing effect was evaluated according to the following evaluation criteria (S: 11 or more; A: 9 - 11; B: 7 - 9; C: 5 - 7; D: 5 or less). When all the evaluation results were B or more, it was evaluated as having a good moisturizing effect. The evaluation results of each sample are shown in Table 1.

[0055] [Table 1]

[0056] Table 1: Composition Ratio Summary and Evaluation Results

[0057]

[0058] Comparative Example 1 did not show good moisturizing effects. On the other hand, Examples 1 to 4 all showed good moisturizing effects. Therefore, according to the results in Table 1, it is shown that: the composition of the present invention has a high moisturizing effect compared with an equal amount of glycerol solution. In addition, the composition of the present invention is not sticky and presents a refreshing feeling in use.

[0059] Next, by the same method as above, a lotion-like composition with the ratios shown in Table 2 using different types of anionic surfactants was prepared. The prepared composition was applied to 4 panelists, and the value of the increase in the amount of moisture was calculated by the same method as above. The moisturizing effect was evaluated according to the following evaluation criteria (S: 11 or more; A: 8 - 11; B: 5 - 8; C: 2 - 5; D: 2 or less). When all the evaluation results were B or above, it was evaluated as having a good moisturizing effect. The results are shown in Table 2.

[0060] [Table 2]

[0061] Table 2: Composition Ratio Summary and Evaluation Results

[0062]

[0063] Comparative Example 2 did not show good moisturizing effects. On the other hand, Examples 5 to 7 all showed good moisturizing effects. Therefore, according to the results in Table 2, it is shown that: even when the anionic surfactant is changed, the composition of the present invention has a high moisturizing effect compared with an equal amount of glycerol solution. In addition, the composition of the present invention is not sticky and presents a refreshing feeling in use.

[0064] Next, by the same method as above, a lotion-like composition with the ratios shown in Table 3 with the mixing amounts of water, higher alcohols, etc. changed was prepared. The prepared composition was applied to 4 panelists, and the value of the increase in the amount of moisture was calculated by the same method as above. The moisturizing effect was evaluated according to the following evaluation criteria (S: 11 or more; A: 8 - 11; B: 5 - 8; C: 2 - 5; D: 2 or less). When all the evaluation results were B or above, it was evaluated as having a good moisturizing effect. The results are shown in Table 3.

[0065] [Table 3]

[0066] Table 3: Composition Ratio Summary and Evaluation Results

[0067]

[0068] Comparative Example 2 did not show good moisturizing effects. On the other hand, both Examples 8 and 9 showed good moisturizing effects. Therefore, the results in Table 3 showed that even when the compounding amounts of water, higher alcohols, etc. were changed, the composition of the present invention had a higher moisturizing effect compared to an equal amount of glycerol solution. In addition, the composition of the present invention was not sticky and presented a refreshing feeling in use.

[0069] The above results showed that the composition of the present invention had a higher moisturizing effect compared to an equal amount of glycerol solution.

Claims

1. A composition, comprising: (A) one or more unbranched higher alcohols having 14 to 22 carbon atoms, (B) one or more anionic surfactants, and (C) water, The proportion of the oil component other than the component (A) relative to the compounding amount of the composition is 0.1% by weight or less.

2. The composition according to claim 1, wherein The component (A) is one or more selected from behenyl alcohol, stearyl alcohol, and cetyl alcohol.

3. The composition according to claim 1, wherein, The component (B) is a salt having an acyl group.

4. The composition according to claim 1, wherein, The component (B) is one or more selected from the group consisting of sodium N-stearoyl methyl taurate and sodium stearoyl glutamate.

5. The composition according to claim 1, further comprising (D) glycerol monoalkyl ether and / or glycerol monoalkyl ester.

6. The composition according to claim 5, wherein, The component (D) is batyl alcohol.

7. The composition according to claim 5, wherein When the compounding ratio (w / w) of the component (A) relative to the composition is CA, the compounding ratio (w / w) of the component (B) is CB, and the compounding ratio (w / w) of the component (D) is CD, (CA + CD) / CB is 3 to 25.

8. The composition according to any one of claims 1 to 7, which is a cosmetic composition.

9. An oil-in-water emulsified composition, comprising an aqueous phase in which an oil phase is dispersed, and the aqueous phase comprises the composition according to any one of claims 1 to 7.

10. The oil-in-water type emulsified composition according to claim 9, wherein, The proportion of the composition according to any one of claims 1 to 7 relative to the oil-in-water emulsified composition is 0.1 to 90% by weight.

11. The oil-in-water emulsified composition according to claim 9, which is a cosmetic composition.

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