Compositions and cosmetics

Abstract

To provide compositions and cosmetics with excellent gelling properties and stability. [Solution] A composition comprising (A) (Acrylates / C10-30 alkyl acrylate) crosspolymer, (B) hydroxystearic acid, (C) oil, and (D) water.

Description

Technical Field

[0001] The present disclosure relates to compositions and cosmetics.

Background Art

[0002] Conventionally, in cosmetics, products may be made using the gel itself or a pulverized gel as a microgel.

[0003] Patent Document 1 discloses forming a gel using agar and using a microgel obtained by pulverizing the gel as a thickener. However, variations in gels are needed to increase the variations in formulations.

[0004] When using a gel for use in cosmetics, it is first necessary to make a stable gel. However, many aqueous thickeners are weak against salts, and when salts are dissolved, even a thickener that usually makes a stable gel may not be able to make a stable gel.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] An object is to create a uniform and stable gel, particularly a uniform gel even in the presence of salts.

Means for Solving the Problems

[0007] In order to solve the above problems, the inventors conducted extensive research and found that the above problems can be solved by combining (A) (acrylates / alkyl acrylate (C10-30)) crosspolymer and (B) hydroxystearic acid, and have completed this disclosure. Specifically, this disclosure provides the following.

[0008] [1](A)(Acrylates / C10-30 Alkyl Acrylate) Crosspolymer, (B) Hydroxystearic acid, (C) Oils and (D) Water; A composition containing the following:

[0009] [2](E)The composition according to [1], further comprising a nonionic surfactant.

[0010] [3](E) The composition according to [2], wherein the nonionic surfactant comprises polyoxyethylene hydrogenated castor oil.

[0011] [4] The composition according to any one of [1] to [3], wherein the ratio (B / A) of the mass of (B) hydroxystearic acid to the mass of (A) (acrylates / alkyl acrylate (C10-30)) crosspolymer is 1 or more and 200 or less.

[0012] [5](A)(Acrylates / C10-30 alkyl acrylate) crosspolymer has a mass percentage of 0.001% by mass or more and 1% by mass or less of the total composition, (B) The composition according to any one of [1] to [4], wherein the hydroxystearic acid is present in a mass percentage of 0.05% by mass or more and 5% by mass or less of the entire composition.

[0013] [6](F)The composition according to any one of [1] to [5], further comprising a salt-type drug.

[0014] [7] An oil-in-water emulsion composition, the composition according to any one of [1] to [6].

[0015] [8] A gel-like composition, the composition according to any one of [1] to [7].

[0016] A cosmetic comprising the gel-like composition described in [9][8]. [Effects of the Invention]

[0017] According to this disclosure, it is possible to provide a composition with excellent gelling properties and stability, and a cosmetic composition using the same. [Modes for carrying out the invention]

[0018] The embodiments of this disclosure will be described in detail below, but this disclosure is not limited to the embodiments described below and may be implemented with appropriate modifications within the scope of the purposes of this disclosure.

[0019] ≪Composition≫ The compositions of this disclosure comprise (A) (acrylates / C10-30 alkyl acrylate) crosspolymer, (B) hydroxystearic acid, (C) oil, and (D) water. Hereinafter, a component represented by, for example, (A) will also be referred to as component (A).

[0020] Components (A) and (B) are generally known as thickeners and gelling agents, but the inventors have found that when components (A) and (B) are combined, they exhibit particularly excellent gelling properties and stability.

[0021] <(A)(Acrylates / C10-30 Alkyl Acrylate) Crosspolymer> (Component (A) is a compound denoted by the INCI name "ACRYLATES / C10-30 ALKYL ACRYLATE CROSSPOLYMER". Examples of commercially available products of component (A) include "PEMULEN TR-1", "PEMULEN TR-2", and "Carbopol® 1342 Polymer" manufactured by Lubrizol Advanced Materials. Only one kind of component (A) may be used, or two or more kinds may be used in combination.)

[0022] (It is preferable that the mass ratio of component (A) in the entire composition of the present disclosure is 0.001% by mass or more and 1% by mass or less, more preferably 0.005% by mass or more and 0.5% by mass or less, and even more preferably 0.008% by mass or more and 0.2% by mass or less. When it is within the above numerical range, the effects of the present disclosure are likely to be obtained.)

[0023] <(B) Hydroxystearic acid> (Component (B) is a compound in which one or more (preferably one) hydrogen atoms bonded to the carbon atoms of stearic acid are substituted with hydroxy groups. As component (B), 12-hydroxystearic acid is preferable. Only one kind of component (B) may be used, or two or more kinds may be used in combination.)

[0024] (The ratio of the mass of component (B) to the mass of component (A) (B / A) is preferably 1 or more and 200 or less, more preferably 2 or more and 100 or less, and even more preferably 3 or more and 80 or less. When it is within the above numerical range, the effects of the present disclosure are likely to be obtained.)

[0025] (It is preferable that the mass ratio of component (B) in the entire composition of the present disclosure is 0.05% by mass or more and 5% by mass or less, more preferably 0.1% by mass or more and 3% by mass or less, and even more preferably 0.3% by mass or more and 2% by mass or less. When it is within the above numerical range, the effects of the present disclosure are likely to be obtained.)

[0026] <(C) Oil component> Examples of component (C) include hydrocarbon oils, polar oils, silicone oils, liquid oils and fats, and solid oils and fats. Component (C) may be used alone or in combination of two or more types.

[0027] Examples of hydrocarbon oils include paraffin, squalane, squalene, isohexadecane, isododecane, hydrogenated polydecene, hydrogenated isopolybutene, and petrolatum.

[0028] Examples of silicone oils include chain-like silicone oils such as dimethicone, methylphenylpolysiloxane, caprylyl methicone, diphenylsiloxyphenyl trimethicone, and methylhydrogenpolysiloxane; silicone resins such as trimethylsiloxysilicate; and cyclic silicone oils such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.

[0029] Examples of polar oils include ester oils, higher fatty acids, and higher aliphatic alcohols. Examples of ester oils include octyl octanoate, nonyl nonanoate, cetyl octanoate, isopropyl myristate, octyldodecyl myristate, isopropyl palmitate, ethylhexyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, Ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, isodecyl pivalate, tripropylene glycol pivalate, PPG-3 dipivalate, diisostearyl malate, glyceryl di-2-heptylundecanoate, glyceryl diisostearate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, tetra-2- Pentaerythritol ethylhexanoate, glyceryl tri-2-ethylhexanoate (triethylhexanoin), glyceryl trioctanoate, glyceryl triisopalmitate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate-2-ethylhexyl palmitate, glycerin trimiristicate, glyceride tri-2-heptylundecanoate, methyl castor oil fatty acid ester, oleyl oleate, acetoglyceride, 2-heptylundecyl palmitate Examples include diisobutyl adipate, di(phytosteryl / octyldodecyl) lauroyl 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, triethyl citrate, cetyl ethylhexanoate, phytosteryl macadamia nut fatty acid, and tocopherol acetate. Examples of high-grade fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecylenic acid, tallic acid, isostearic acid, linoleic acid, linolenic acid, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). Examples of higher aliphatic alcohols include straight-chain alcohols (e.g., lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, and cetostearyl alcohol) and branched-chain alcohols (e.g., lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, and octyldodecanol).

[0030] Component (C) is preferably composed of hydrocarbon oil and / or polar oil, as it tends to have excellent gelling properties and appearance. The total amount of hydrocarbon oil and polar oil in 100% by mass of component (C) is preferably 50% by mass or more, more preferably 70% by mass or more, and even more preferably 90% by mass or more. When the values ​​are within the above range, it tends to have excellent gelling properties and appearance.

[0031] Component (C) is preferably 1% by mass or more and 50% by mass or less in mass of the whole composition of the present disclosure, more preferably 3% by mass or more and 30% by mass or less, and even more preferably 5% by mass or more and 20% by mass or less.

[0032] <(D)Water> Component (D) is preferably 10% by mass or more and 90% by mass or less in mass of the whole composition of the present disclosure, more preferably 30% by mass or more and 85% by mass or less, and even more preferably 50% by mass or more and 80% by mass or less.

[0033] <(E) Nonionic surfactants> The compositions of this disclosure preferably contain (E) a nonionic surfactant from the viewpoint of further enhancing stability. Examples of component (E) include polyoxyethylene fatty acid glyceryl, polyoxyethylene-methylpolysiloxane copolymer, fatty acid polyoxyethylene sorbitan, polyoxyethylene alkyl ether, maltitol hydroxyaliphatic alkyl ether, alkylated polysaccharide, alkyl glucoside, sucrose fatty acid ester, polyoxyethylene hydrogenated castor oil glyceryl, polyoxyethylene cetyl ether, polyoxyethylene hydrogenated castor oil, polyoxyethylene glyceryl isostearate, polyoxyethylene glyceryl monostearate, polyoxyethylene phytosterol, polyoxyethylene behenyl ether, and polyoxyethylene sorbitan monostearate. Among these, polyoxyethylene hydrogenated castor oil is preferred. Component (E) may be used alone or in combination of two or more.

[0034] The average degree of polymerization of the polyoxyethylene chains in polyoxyethylene hydrogenated castor oil is preferably 20 to 100, more preferably 40 to 80, and preferably 50 to 70. Examples of polyoxyethylene hydrogenated castor oil include PEG-10 hydrogenated castor oil, PEG-20 hydrogenated castor oil, PEG-25 hydrogenated castor oil, PEG-30 hydrogenated castor oil, PEG-40 hydrogenated castor oil, PEG-50 hydrogenated castor oil, PEG-60 hydrogenated castor oil, PEG-80 hydrogenated castor oil, and PEG-100 hydrogenated castor oil. Among these, PEG-60 hydrogenated castor oil is preferred.

[0035] Component (E) is preferably present in a mass percentage of 0.1% to 5% by mass of the total composition of the present disclosure, more preferably 0.3% to 3% by mass, and even more preferably 0.5% to 2% by mass. Excellent stability is easily obtained when the mass percentage is within the above numerical range.

[0036] <(F) Salt-type drugs> The compositions of this disclosure may contain (F) salt-type agents. (F) salt-type agents are known to reduce the thickening effect of some thickeners. Therefore, compositions containing (F) salt-type agents may have difficulty in obtaining thickening and gelling effects. However, in the compositions of this disclosure, by using components (A) and (B) in combination, there is a tendency for excellent gelling properties even in the presence of component (F). Component (F) is a water-soluble agent capable of forming salts and is not particularly limited as long as it is commonly used in cosmetics. Examples of component (F) include L-ascorbic acid, its derivatives and salts thereof; tranexamic acid, its derivatives and salts thereof; and alkoxysalicylic acid, its derivatives and salts thereof; and the like.

[0037] Examples of derivatives of L-ascorbic acid include L-ascorbic acid monoalkyl esters such as L-ascorbic acid monostearate, L-ascorbic acid monopalmitate, and L-ascorbic acid monooleate; L-ascorbic acid monoesters such as L-ascorbic acid monophosphate and L-ascorbic acid 2-sulfate; L-ascorbic acid dialkyl esters such as L-ascorbic acid distearate, L-ascorbic acid dipalmitate, and L-ascorbic acid diolate; L-ascorbic acid trialkyl esters such as L-ascorbic acid tristearate, L-ascorbic acid tripalmitate, and L-ascorbic acid trioleate; L-ascorbic acid triesters such as L-ascorbic acid triphosphate; and L-ascorbic acid glucosides such as L-ascorbic acid 2-glucoside.

[0038] Examples of tranexamic acid derivatives include tranexamic acid dimers (e.g., trans-4-(trans-aminomethylcyclohexanecarbonyl)aminomethylcyclohexanecarboxylic acid hydrochloride), esters of tranexamic acid and hydroquinone (e.g., 4-(trans-aminomethylcyclohexanecarboxylic acid 4'-hydroxyphenyl ester), esters of tranexamic acid and gentisic acid (e.g., 2-(trans-4-aminomethylcyclohexylcarbonyloxy)-5-hydroxybenzoic acid), and amides of tranexamic acid (e.g., trans-4-aminomethylcyclohexanecarboxylic acid methylamide, trans-4-(p-methoxybenzoyl)aminomethylcyclohexanecarboxylic acid, trans-4-guanidinomethylcyclohexanecarboxylic acid, etc.).

[0039] Alkoxysalicylic acid is a salicylic acid in which one of the hydrogen atoms at the 3rd, 4th, or 5th position is substituted with an alkoxy group. The alkoxy group is preferably a methoxy group, ethoxy group, propoxy group, isopropoxy group, butoxy group, or isobutoxy group, and more preferably a methoxy group or an ethoxy group. Examples of alkoxysalicylic acid include 3-methoxysalicylic acid, 3-ethoxysalicylic acid, 4-methoxysalicylic acid, 4-ethoxysalicylic acid, 4-propoxysalicylic acid, 4-isopropoxysalicylic acid, 4-butoxysalicylic acid, 5-methoxysalicylic acid, 5-ethoxysalicylic acid, and 5-propoxysalicylic acid.

[0040] The salts of these drugs are not particularly limited, but examples include alkali metal salts or alkaline earth metal salts such as sodium salts, potassium salts, and calcium salts, as well as ammonium salts and amino acid salts.

[0041] Component (F) is preferably present in a mass percentage of 0.1% to 5% by mass of the entire composition of the present disclosure, more preferably 0.3% to 4% by mass, and even more preferably 0.5% to 3% by mass. Within the above numerical range, the effects of the present disclosure and the effects of incorporating component (F) are more easily obtained.

[0042] <Optional ingredients> In addition to the components described above, the compositions of this disclosure may also contain aqueous and oily components commonly used in the field of cosmetics. Examples of such components include powder components, pH adjusters, humectants, surfactants, thickeners, stabilizers, colorants, preservatives, antioxidants, and fragrances.

[0043] The compositions disclosed herein can be manufactured according to conventional methods. The stirring method during emulsification, emulsification temperature, the order in which the oil phase and aqueous phase are added, and the addition speed can be set as appropriate.

[0044] The composition of this disclosure is more preferably an oil-in-water emulsion composition. The composition of this disclosure is preferably a gel composition. The composition of this disclosure may also be a cosmetic.

[0045] <<Cosmetics>> The cosmetic composition of this disclosure includes the composition of this disclosure as a gel-like composition (hereinafter also referred to as "the gel of this disclosure"). This makes it easier to obtain a thickening effect.

[0046] The gel of this disclosure is preferably pulverized using a homogenizer, disperser, mechanical stirrer, etc., to form a microgel. The average particle size of the microgel can be appropriately determined depending on the purpose.

[0047] The cosmetics disclosed herein may include aqueous and oily components commonly used in the field of cosmetics. Examples of such components include water, oils, powders, pH adjusters, humectants, surfactants, thickeners, stabilizers, colorants, preservatives, antioxidants, and fragrances.

[0048] The cosmetic composition of this disclosure may be an oil-in-water emulsion cosmetic composition or a water-in-oil emulsion cosmetic composition. [Examples]

[0049] The present disclosure will be described in more detail based on the examples, but the present disclosure is not limited to these examples.

[0050] <Examples 1-9 and Comparative Examples 1-5> Oil-in-water emulsion compositions were prepared by mixing the components listed in Tables 1-3 (amounts expressed as mass%). Each example composition was evaluated as follows. The results are shown in Tables 1-3.

[0051] <Exterior> The composition of each prepared example was visually observed, and its appearance (uniformity) was evaluated according to the following criteria. In this appearance evaluation, a score of A or B was considered acceptable. (Evaluation Criteria) A: No clumps formed, and the consistency was uniform. B: Some clumps were present, but they were dispersed within the composition. C: Many clumps were formed and localized within the composition. D: It was separated into several layers.

[0052] <Gelling properties> The gelation state of each prepared composition was evaluated according to the following criteria. In this evaluation of gelation properties, a score of A or B was considered acceptable. (Evaluation Criteria) A: The entire thing had gelled uniformly. B: Although there was some unevenness, the whole thing had gelled. C: It had gelled unevenly. D: It had not gelled.

[0053] <Stability> Each composition was evaluated according to the following criteria after being allowed to stand for two days after preparation. In this stability evaluation, a score of A or B was considered acceptable. (Evaluation Criteria) A: There was no change from the state of the composition at the time of preparation. B: Only a slight phase separation of water occurred; there was no change from the state of the composition at the time of preparation. C: The oil phase and the aqueous phase were completely separated.

[0054] [Table 1] *1: PEMULEN TR-2 (manufactured by Lubrizol Advanced Materials) *2: KF-96A-6T (manufactured by Shin-Etsu Chemical Co., Ltd.) *3: NIKKOL HCO-60 (manufactured by Nikko Chemicals Co., Ltd.)

[0055] [Table 2] *4: Carbopol® 981 Polymer (manufactured by Lubrizol Advanced Materials) *5: San Jerose 90L (manufactured by Daido Chemical Industries Co., Ltd.) *6: SIMULGEL EG (manufactured by Sepik) *7: PA Wax (manufactured by Nikko Rica Co., Ltd.)

[0056] [Table 3]

[0057] As shown in Table 1, Examples 1 to 9, which contained components (A) to (D), had a uniform appearance without clumping and exhibited excellent gelling properties and stability. On the other hand, Comparative Examples 1 to 3, which used other hydrophilic thickeners instead of component (A), and Comparative Example 4, which used other oil gelling agents instead of component (B), showed inferior performance in at least one of gelling properties and stability, as shown in Table 2.

Claims

1. (A) (Acrylates / C10-30 Alkyl Acrylate) Crosspolymer, (B) Hydroxystearic acid, (C) Oils and (D) water; A composition containing the following:

2. (E) The composition according to claim 1, further comprising a nonionic surfactant.

3. (E) The composition according to claim 2, wherein the nonionic surfactant comprises polyoxyethylene hydrogenated castor oil.

4. The composition according to claim 1, wherein the ratio (B / A) of the mass of (B) hydroxystearic acid to the mass of (A) (acrylates / alkyl acrylate (C10-30)) crosspolymer is 1 or more and 200 or less.

5. (A) The (acrylates / alkyl acrylate (C10-30)) crosspolymer has a mass percentage of 0.001% by mass or more and 1% by mass or less of the total composition. (B) The composition according to claim 1, wherein the mass percentage of hydroxystearic acid in the whole composition is 0.05% by mass or more and 5% by mass or less.

6. (F) The composition according to claim 1, further comprising a salt-type agent.

7. The composition according to claim 1, which is an oil-in-water emulsion composition.

8. A gel-like composition according to any one of claims 1 to 7.

9. A cosmetic comprising the gel-like composition described in claim 8.

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