Oil-in-water emulsion cosmetic

Abstract

To provide an oil-in-water emulsion cosmetic that blends well with the skin when applied. [Solution] The oil-in-water emulsion cosmetic comprises (A) a cyclic carboxamide derivative or a salt thereof, (B) a colorant, (C) an oil, and (D) water, wherein the content of component (B) is 1% by mass or more relative to the total amount of the oil-in-water emulsion cosmetic, and the viscosity measured at 30°C using a B-type viscometer is 1,000 to 35,000 mPa·s.

Description

Technical Field

[0001] The present invention relates to an oil-in-water type emulsified cosmetic.

Background Art

[0002] Conventionally, in cosmetics such as foundations, oil-in-water type emulsified cosmetics containing coloring materials have been used (for example, Patent Document 1). In such cosmetics, for example, by using a thickener or the like, the viscosity of the aqueous phase is maintained within a specific range, and the coloring material is dispersed in the aqueous phase. However, there has been room for improvement in the skin affinity during application.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

[0004] The present inventors have surprisingly found that in a cosmetic containing (A) a cyclic carboxamide derivative or a salt thereof, (B) a coloring material, (C) an oil component, and (D) water and having a specific viscosity, the skin affinity during application is improved. The present invention is based on these findings.

[0005] According to the present disclosure, the following inventions are provided. [1] (A) A cyclic carboxamide derivative represented by formula (1) or a salt thereof

Chem.

[0004] , , , , , , , , 2 , ,

[0003] , 1 , , ,

[0005] , is a hydrocarbon group having 1 to 6 carbon atoms which may be substituted with a hydroxyl group, or a hydrogen atom, and X is -CH2- or -N(R 2 )-, where R 2An oil-in-water emulsion cosmetic comprising (B) a hydrocarbon group having 1 to 6 carbon atoms which may be substituted with a hydroxyl group, or a hydrogen atom, and n is an integer from 1 to 3, (B) a colorant selected from the group consisting of colored pigments and white pigments, (C) an oil, and (D) water, wherein the content of component (B) is 1% by mass or more with respect to the total amount of the oil-in-water emulsion cosmetic, and the viscosity measured at 30°C using a B-type viscometer is 1,000 to 35,000 mPa·s. [2] In formula (1) of component (A), R 1 The oil-in-water emulsion cosmetic according to [1], wherein X is a hydroxyalkyl group having 1 to 3 carbon atoms, X is -CH2- or -NH-, and n is 1. [3] The oil-in-water emulsion cosmetic according to [1] or [2], wherein component (A) is 1-(2-hydroxyethyl)-2-imidazolidinone. [4] The oil-in-water emulsion cosmetic according to any one of [1] to [3], wherein the content of component (A) is 0.1 to 5% by mass with respect to the total amount of the oil-in-water emulsion cosmetic. [5] The oil-in-water emulsion cosmetic according to any one of [1] to [4], wherein component (B) is a hydrophobized colorant. [6] An oil-in-water emulsion cosmetic according to any one of [1] to [5], wherein component (B) is present in the oil phase. [7](E) An oil-in-water emulsion cosmetic according to any one of [1] to [6], further comprising a hydrophilic thickener. [8](F) An oil-in-water emulsion cosmetic according to any one of [1] to [7], further comprising a dispersant.

[0006] According to the present invention, an oil-in-water emulsion cosmetic composition with excellent skin compatibility upon application is provided. Specific description of the invention

[0007] The oil-in-water emulsion cosmetic composition according to the present invention (hereinafter sometimes simply referred to as "cosmetic composition") comprises (A) a cyclic carboxamide derivative or a salt thereof, (B) a colorant, (C) an oil, and (D) water, and has a specific viscosity. Each of these components, and any further components that may be added, are described below. In this specification, "skin compatibility" means that when the cosmetic composition is applied and spread on the skin, it does not repel the skin but rather penetrates it.

[0008] (A) Cyclic carboxamide derivatives or salts thereof The cosmetic composition according to the present invention comprises a cyclic carboxamide derivative represented by formula (1) or a salt thereof (hereinafter sometimes referred to as component (A); the same applies to other components). [ka] During the ceremony, R 1 This is a hydrocarbon group having 1 to 6 carbon atoms, which may be substituted with a hydroxyl group, or a hydrogen atom. X is -CH2- or -N(R 2 )- and here, R 2 is a hydrocarbon group having 1 to 6 carbon atoms, which may be substituted with a hydroxyl group, or a hydrogen atom, and n is an integer between 1 and 3. The hydrocarbon group described above is not particularly limited and may be, for example, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, a cycloalkylalkyl group, a haloalkyl group, an alkoxyalkyl group, or an alkoxycarbonylalkyl group, and is preferably an alkyl group.

[0009] In a preferred form, in formula (1) of component (A), R 1 However, it is a hydroxyalkyl group having 1 to 3 carbon atoms. X is -CH2- or -NH-, and n is 1. Specific examples of cyclic carboxamide derivatives represented by formula (1) include the following: [Chemical] The component (A) preferably contains 1-(2-hydroxyethyl)-2-imidazolidinone (hydroxyethylimidazolidinone).

[0010] The component (A) may be a salt of a cyclic carboxamide derivative represented by the formula (1). The type of the salt is not particularly limited as long as it is a pharmaceutically acceptable salt, and it may be an inorganic salt or an organic salt. Examples of the inorganic salt include hydrochloride, sulfate, phosphate, hydrobromide, sodium salt, potassium salt, magnesium salt, calcium salt, magnesium salt, ammonium salt, etc. Examples of the organic salt include acetate, lactate, maleate, fumarate, tartrate, methanesulfonate, p-toluenesulfonate, triethanolamine salt, amino acid salt, etc.

[0011] The content rate of the component (A) is not limited to this, but is preferably 0.1 to 5% by mass, more preferably 0.5 to 3.5% by mass, and still more preferably 1 to 3% by mass with respect to the total amount of the cosmetic.

[0012] The component (A) is generally known as a component having a whitening effect. However, surprisingly, it has been found that in the cosmetic of the present invention, by blending this component (A), an unexpected effect of improving the skin affinity of the cosmetic can be obtained.

[0013] (B) Colorant The cosmetic of the present invention comprises a colorant selected from the group consisting of (B) a coloring pigment and a white pigment.

[0014] As the component (B), it can be arbitrarily selected from those generally usable in cosmetics. Examples of the coloring pigment include Metal oxides such as titanium oxide, iron oxide (yellow iron oxide, black iron oxide, and red iron oxide), cerium oxide, aluminum oxide, chromium oxide, chromium hydroxide, metal complexes such as manganese violet, green spinel (cobalt titanate), and inorganic pigments such as carbon black; organic pigments such as tar-based pigments and lake pigments; and natural pigments such as carmine may be mentioned. Examples of white pigments include titanium dioxide and zinc oxide.

[0015] The coloring materials used can be selected according to the purpose, but it is preferable to use inorganic pigments that have a large effect of covering the base, and it is more preferable to use titanium oxide, iron oxide, or zinc oxide. These coloring materials can also be used in combination of two or more.

[0016] As the powder used as the coloring material, those with various particle diameters are known. The particle diameter of the powder can be selected according to the purpose, but those with a primary particle diameter of 0.1 μm or more are preferable, and those with 0.2 μm or more are more preferable.

[0017] Component (B) may or may not be hydrophobically treated. Since the adhesion to the skin can be enhanced, it is more preferable that component (B) is hydrophobically treated. As the hydrophobic treatment, generally used treatments can be used.

[0018] Examples of the hydrophobic treatment include silicone treatment, fluorine treatment, cation treatment, fatty acid dextrin treatment, polyglycerin fatty acid ester treatment, fatty acid treatment, metal soap treatment, and amino acid treatment. The hydrophobically treated coloring material may be in the form of a salt.

[0019] Specific examples of silicone treatments include dimethylpolysiloxane (or dimethicone) treatment, amodimethicone treatment, methylphenylpolysiloxane treatment, methylhydrogenpolysiloxane treatment, dimethylpolysiloxane treatment, and alkylalkoxysilane treatment. Examples of alkylalkoxysilanes used in alkylalkoxysilane treatment include hexyltrimethoxysilane, hexyltriethoxysilane, caprylyltrimethoxysilane, and caprylyltriethoxysilane. Specific examples of fluorine treatments include perfluoroalkyl phosphate ester treatment and perfluoroalkylalkoxysilane treatment. One type of amino acid treatment is N-acyl amino acid treatment. N-acyl amino acids or their salts used in N-acyl amino acid treatment include compounds formed by the condensation of an acyl group, preferably a saturated fatty acid having 12 to 20 carbon atoms, with the amino group of an amino acid, or salts thereof. Glutamic acid or aspartic acid are preferred amino acids. Examples of N-acyl groups include stearoyl groups and lauroyl groups. Salts can be selected from alkali metal salts such as sodium and potassium, or alkaline earth metal salts, but sodium salts are preferred. Specific examples include dilauroyl glutamate lysine sodium, N-stearoyl glutamate disodium, N-lauroyl glutamate sodium, and lauroyl aspartate sodium. Examples of cationic treatments include distearyldimonium chloride treatment. Examples of fatty acid dextrin treatment include palmitate dextrin treatment. Examples of polyglycerin fatty acid ester treatments include treatment with polyglyceryl-2 tetraisostearate. Examples of fatty acid treatments include stearic acid treatment, myristic acid treatment, and octenyl succinic acid, while examples of metal soap treatments include zinc stearate treatment. The hydrophobized component (B) is preferably present in the oil phase.

[0020] (B) The content of component (B) is preferably 1% by mass or more, and more preferably 25% by mass or less, relative to the total amount of the cosmetic. The content of component (B) is preferably 1 to 20% by mass, and more preferably 2 to 15% by mass, relative to the total amount of the cosmetic.

[0021] (C) Oil content The cosmetic composition of the present invention comprises (C) oil. (C) Component can be any component that can be used in cosmetics, pharmaceuticals, etc. Examples of (C) component include ester oils, silicone oils, hydrocarbon oils, higher fatty acids, higher alcohols, liquid oils, solid oils, semi-solid oils, etc. The oil component is preferably ester oil, silicone oil, hydrocarbon oil, or higher alcohol. In the present invention, if the cosmetic contains a dispersant (F) described later, the oil component corresponding to component (F) is excluded from component (C).

[0022] (C) One or more components may be included. The content of (C) is preferably 5 to 50% by mass, more preferably 7 to 40% by mass, and even more preferably 10 to 30% by mass, based on the total amount of the cosmetic.

[0023] Examples of ester oils include ethylhexyl methoxycinnamate, 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, tripropylene glycol pivalate, diisostearyl malate, glyceryl di-2-heptyl undecanoate, glyceryl diisostearate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate Pan, pentaerythritol tetra-2-ethylhexanoate, glyceryl tri-2-ethylhexanoate, glyceryl trioctanoate, glyceryl triisopalmitate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate-2-ethylhexyl palmitate, glyceryl trimiristate, glyceride tri-2-heptylundecanoate, methyl castor oil fatty acid ester, oleyl oleate, acetoglyceride, 2-heptylun palmitate Examples include decyl, diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, 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, and macadamia nut fatty acid phytosteryl.

[0024] Examples of silicone oils include linear polysiloxanes (e.g., dimethicone, diphenylsiloxyphenyl trimethicone, diphenylpolysiloxane, etc.), cyclic polysiloxanes (e.g., octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, etc.), various modified polysiloxanes (amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, fluorine-modified polysiloxane, etc.), and acrylic silicones, with linear polysiloxanes being preferred.

[0025] Examples of hydrocarbon oils include isododecane, isohexadecane, isoparaffin, mineral oil (liquid paraffin), ozokerite, squalane, pristane, paraffin, ceresin, squalene, petrolatum, microcrystalline wax, and hydrogenated polydecene.

[0026] Examples of high-grade fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecylenic acid, tallic acid, linoleic acid, linolenic acid, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA).

[0027] Examples of higher alcohols include straight-chain alcohols (e.g., lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol, etc.) and branched-chain alcohols (e.g., lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, octyldodecanol, etc.).

[0028] Examples of liquid oils include avocado oil, camellia oil, macadamia nut oil, corn oil, olive oil, rapeseed oil, sesame oil, peach kernel oil, wheat germ oil, sasanqua oil, castor oil, linseed oil, safflower oil, cottonseed oil, elm oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, cinnamon oil, Japanese tuni oil, jojoba oil, germ oil, and triglycerin. Examples of solid oils include cocoa butter, coconut oil, hydrogenated coconut oil, palm oil, palm kernel oil, hydrogenated palm oil, Japanese wax kernel oil, hydrogenated oil, Japanese wax, and hydrogenated castor oil. Examples of semi-solid oils include shea butter, partially hydrogenated coconut oil, and partially hydrogenated jojoba oil.

[0029] (D)Water The cosmetic composition according to the present invention comprises (D) water. As the water, water used for cosmetics, quasi-drugs, etc., can be used, for example, purified water, ion-exchanged water, tap water, etc. The water content is preferably 20 to 90% by mass, and more preferably 50 to 90% by mass, relative to the total amount of the cosmetic composition according to the present invention.

[0030] The cosmetic composition of the present invention must have a viscosity of 1,000 to 35,000 mPa·s, preferably 2,000 to 30,000 mPa·s, and more preferably 3,000 to 25,000 mPa·s, as measured at 30°C using a B-type viscometer. Having such a viscosity allows the (C) component to be dispersed well and stably in the aqueous phase.

[0031] (E) Hydrophilic thickener The cosmetic composition according to the present invention may further contain (E) a hydrophilic thickener as needed. The content of (E) the hydrophilic thickener is not particularly limited as long as the viscosity of the cosmetic composition is within the above range. As the hydrophilic thickener, those commonly used in cosmetics can be used. Examples of hydrophilic thickeners include natural or semi-synthetic aqueous polymers and synthetic aqueous polymers, and specific examples are as follows.

[0032] Examples of natural or semi-synthetic aqueous polymers include, Plant-derived polymers such as gum arabic, tragacanth gum, and galactan; Microbial polymers such as xanthan gum, dextran, succinoglycans, and pullulans; Starch-based polymers such as carboxymethyl starch; Cellulosic polymers such as methylcellulose, nitrocellulose, ethylcellulose, hydroxyethylcellulose, and sodium carboxymethylcellulose; and Alginate-based polymers such as sodium alginate Examples include:

[0033] Synthetic aqueous polymers include ionic or nonionic hydrophilic polymers, for example, Vinyl polymers such as polyvinyl alcohol and polyvinylpyrrolidone; Polyoxyethylene polymers such as polyethylene glycol; Polyoxyethylene polyoxypropylene copolymer polymer; Acrylic polymers such as sodium polyacrylate, polyethyl acrylate, polyacrylamide compounds (e.g., poly2-acrylamide-2-methylpropanesulfonic acid, polymethacryloyloxytrimethylammonium, (ammonium acryloyldimethyltaurate / VP) copolymer, (dimethylacrylamide / sodium acryloyldimethyltaurate) crosspolymer, (ammonium acryloyldimethyltaurate / beheneth-25 methacrylate) crosspolymer, acrylic acid / alkyl methacrylate copolymers (e.g., (acrylates / alkyl (C10-30) acrylate) crosspolymer (e.g., commercially available products such as "PEMULEN TR-1" and "PEMULEN TR-2," both manufactured by Lubrizol)); Polyethyleneimine, Cationic polymers These are some examples.

[0034] When component (E) is used in the cosmetic composition according to the present invention, it is preferable to include one or more selected from the group consisting of (dimethylacrylamide / sodium acryloyldimethyltaurate) crosspolymer, (ammonium acryloyldimethyltaurate / beheneth-25 methacrylate) crosspolymer, (acrylates / alkyl (C10-30) acrylate) crosspolymer, hydroxyethylcellulose, and succinoglycan, and more preferably two or more.

[0035] Component (E) preferably contains an acrylic polymer among the hydrophilic thickeners described above. Component (E) preferably contains one or more selected from the group consisting of (dimethylacrylamide / sodium acryloyldimethyltaurate) crosspolymer, (ammonium acryloyldimethyltaurate / beheneth-25 methacrylate) crosspolymer, and (acrylates / alkyl(C10-30) acrylate) crosspolymer, and more preferably contains two or more.

[0036] If the cosmetic composition according to the present invention contains component (E), its content is preferably 5% by mass or less, more preferably 0.1 to 3% by mass, and even more preferably 0.1 to 2% by mass, based on the total amount of the cosmetic composition.

[0037] (F) Dispersant The cosmetic composition of the present invention may further contain a dispersant as needed. The inclusion of a dispersant (F) in the cosmetic composition allows for good and stable dispersion of component (B). Component (F) can be any component commonly used in cosmetics, such as isostearic acid, sorbitan sesquiisostearate, or polyglyceryl-6 polyricinoleate. The content of component (F) is preferably 0.5 to 5% by mass, more preferably 1.0 to 3.0% by mass, and even more preferably 1.5 to 2.5% by mass, based on the total amount of the cosmetic composition.

[0038] The cosmetic composition according to the present invention may further contain other optional ingredients depending on its purpose. Examples of optional ingredients include those listed below, and one or more of these may be included as long as they achieve the effects of the present invention.

[0039] (a) Surfactants, such as anionic surfactants, cationic surfactants, nonionic surfactants, amphoteric surfactants, etc. (b) Metal ion chelating agents, for example, 1-hydroxyethane-1,1-diphosphonic acid, tetrasodium 1-hydroxyethane-1,1-diphosphonic acid, disodium edetate, trisodium edetate, tetrasodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetate, trisodium ethylenediaminehydroxyethyl triacetate, etc. (c) Neutralizing agents, for example, 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, potassium hydroxide, sodium hydroxide, triethanolamine, sodium carbonate, etc. (d) pH adjusters, such as buffers like lactate-sodium lactate, citrate-sodium citrate, succinate-sodium succinate, etc. (e) Antioxidants, such as tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallic acid esters, etc. (f) Preservatives, such as phenoxyethanol, ethylparaben, butylparaben, etc. (g) Drugs, such as caffeine, tannins, verapamil and its derivatives, tranexamic acid and its derivatives, licorice extract, ceramide NP, various herbal medicines, tocopherol acetate, glycyrrhizic acid and its derivatives or salts thereof, alkoxysalicylic acids such as potassium 4-methoxysalicylate or their salts thereof, vitamin C, magnesium ascorbate phosphate, ascorbate glucoside, etc.

[0040] The cosmetic composition according to the present invention is suitably used as a makeup cosmetic (e.g., foundation, makeup base, etc.), sunscreen cosmetic, etc. However, the cosmetic composition according to the present invention is not limited to these forms and can also be used, for example, as a skincare cosmetic.

[0041] The cosmetic composition according to the present invention can be manufactured by any conventionally known method. The emulsification method for obtaining an oil-in-water composition is not particularly limited and can be manufactured according to conventional methods. [Examples]

[0042] 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 as mass % of the total amount.

[0043] [Examples 1-5, Comparative Examples 1 and 2] Cosmetics for each example and comparative example were prepared according to the ratios shown in Table 1. The viscosity of the cosmetics immediately after preparation was measured at 30°C using a B-type viscometer. The measured viscosities are shown in Table 1.

[0044] Furthermore, the performance of these cosmetics was evaluated as follows.

[0045] [Evaluation of usability: Skin compatibility] Three expert panelists applied the cosmetics prepared above to their skin and collectively evaluated how well the cosmetics blended with the skin during application. "Beautiful blending" means that when the cosmetics are applied and spread on the skin, they do not repel the skin but rather have a feeling of penetrating it. A: I rated it as having excellent skin compatibility. B: I rated it as having excellent skin compatibility. C: Rated as having poor skin compatibility.

[0046] [Stability] After preparing the cosmetic formulation, it was stored at 50°C for one week. The viscosity of the cosmetic formulation was then measured at 30°C using a B-type viscometer and compared to the viscosity value measured immediately after preparation. Stability was evaluated according to the following criteria. A: The viscosity change is within 10% compared to the value measured immediately after preparation. B: The viscosity change is within 30% compared to the value measured immediately after preparation. C: Viscosity change is greater than 30% compared to the value measured immediately after preparation. [Table 1]

Claims

1. (A) A cyclic carboxamide derivative represented by formula (1) or a salt thereof 【Chemistry 1】 (In the formula, R １ This is a hydrocarbon group having 1 to 6 carbon atoms, which may be substituted with a hydroxyl group, or a hydrogen atom. X is -CH ２ - or -N(R ２ ) - and here, R ２ is a hydrocarbon group having 1 to 6 carbon atoms, which may be substituted with a hydroxyl group, or a hydrogen atom, and n is an integer between 1 and 3. (B) A colorant selected from the group consisting of colored pigments and white pigments, (C) Oils and (D) Water An oil-in-water emulsion cosmetic comprising, (B) The content of component is 1% by mass or more relative to the total amount of the oil-in-water emulsion cosmetic composition. An oil-in-water emulsion cosmetic having a viscosity of 1,000 to 35,000 mPa·s, as measured at 30°C using a B-type viscometer.

2. In formula (1) of component (A), R １ However, it is a hydroxyalkyl group having 1 to 3 carbon atoms. X is -CH ２ - or -NH- and The oil-in-water emulsion cosmetic composition according to claim 1, wherein n is 1.

3. (A) The oil-in-water emulsion cosmetic composition according to claim 1 or 2, wherein component (A) is 1-(2-hydroxyethyl)-2-imidazolidinone.

4. The oil-in-water emulsion cosmetic according to claim 1 or 2, wherein the content of component (A) is 0.1 to 5% by mass relative to the total amount of the oil-in-water emulsion cosmetic.

5. The oil-in-water emulsion cosmetic composition according to claim 1 or 2, wherein component (B) is a hydrophobized colorant.

6. (B) The oil-in-water emulsion cosmetic composition according to claim 1 or 2, wherein component (B) is present in the oil phase.

7. (E) The oil-in-water emulsion cosmetic composition according to claim 1 or 2, further comprising a hydrophilic thickener.

8. (F) The oil-in-water emulsion cosmetic composition according to claim 1 or 2, further comprising a dispersant.

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