Powder Complex

Abstract

To provide a composition with improved freshness during use and improved dispersion stability of the powder. [Solution] A composition comprising (A) a cyclic carboxamide derivative or a salt thereof, (B) a hydrophobized powder, and (C) water, wherein component (B) is a powder that has been treated with metal soap, fatty acid, or amino acids and is dispersed in water.

Description

[Technical Field]

[0001] The present invention relates to a composition containing powder, suitable for powder-based cosmetics and the like. [Background technology]

[0002] Emulsified cosmetics are sometimes used as cosmetic formulations. This involves uniformly mixing oily and water-based components to effectively utilize the characteristics of each component. Emulsified cosmetics include oil-in-water and water-in-oil formulations, and the appropriate one is selected depending on the purpose. For example, oil-in-water formulations have characteristics such as providing a fresh and light feel, while water-in-oil formulations have characteristics such as providing a moist feel and exhibiting water-repellent properties, so they are selected according to the purpose.

[0003] Of these, oil-in-water cosmetics, while containing oily components, can improve issues such as stickiness that often accompanies oily components. However, achieving so-called tone-up effects, such as improving uneven skin tone by incorporating powders, has been difficult. For example, methods for uniform application, such as dispersing hydrophobic powder in the aqueous phase, have been developed, but in such cases, problems such as stickiness caused by surfactants have sometimes occurred. Therefore, there has been a need for technology that can appropriately disperse powder in the aqueous phase in oil-in-water cosmetics. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] International Publication No. 2021 / 132273 [Overview of the Initiative]

[0005] The present invention provides the following: [1] (A) A cyclic carboxamide derivative represented by formula (1) or a salt thereof [ka] (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) Hydrophobized powder, and (C)Water A composition comprising The hydrophobic treatment comprises one or more treatments selected from the group consisting of metal soap treatment, fatty acid treatment, and amino acid treatment. A composition in which component (B) is dispersed in water. [2] The composition according to [1], which is an aqueous dispersion. [3] The composition according to [1] or [2], wherein the content of component (A) is 0.3 to 10% by mass with respect to the total amount of the composition. [4] The composition according to any one of [1] to [3], wherein the content of component (B) is 0.1 to 20% by mass with respect to the total amount of the composition. [5] (D) The composition according to any one of [1] to [4], further comprising an alcohol. [6] The composition according to [5], comprising the aforementioned component (D) butylene glycol. [7] An oil-in-water emulsion composition comprising any of the compositions described in [1] to [6]. [8] A method for producing the composition described in any of [1] to [6].

[0006] According to the present invention, there is provided a composition with improved freshness and powder dispersion stability during use. Detailed description of the invention

[0007] The composition according to the present invention is (A) a cyclic carboxamide derivative or a salt thereof (B) a hydrophobically treated powder, and (C) water and comprises the following. Each of these components, and further components that can be blended, will be described below.

[0008] (A) a cyclic carboxamide derivative or a salt thereof The composition according to the present invention contains a cyclic carboxamide derivative represented by formula (1) or a salt thereof (hereinafter sometimes referred to as component (A)). [Chemical formula] In the formula, R 1 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 )-, where 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 of 1 to 3. The above hydrocarbon group 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, an alkoxycarbonylalkyl group, and is preferably an alkyl group.

[0009] In a preferred form, in formula (1) of component (A), R 1 is a hydroxyalkyl group having 1 to 3 carbon atoms, X is -CH2- or -NH-, and na is 1. ​Specific examples of the cyclic carboxamide derivative represented by formula (1) include, for example, the following. [Chemical formula] The most preferred as the component (A) is 1-(2-hydroxyethyl)-2-imidazolidinone.

[0010] The component (A) may be a salt of the cyclic carboxamide derivative represented by formula (1). The type of the salt is not particularly limited as long as it is a pharmacologically 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] Such a component (A) is known as a whitening agent in the field of cosmetics. However, surprisingly, it has been clarified by the study of the present inventors that this component (A) functions as a dispersant or a dispersion stabilizer of the component (B) described later, and the present invention has been completed.

[0012] One or more kinds of the component (A) can be blended. The content of the component (A) is preferably 0.3 to 10% by mass, more preferably 0.5 to 5% by mass, and even more preferably 1 to 3% by mass with respect to the total amount of the composition.

[0013] (B) Hydrophobically treated powder The composition according to the present invention contains a hydrophobically treated powder (hereinafter sometimes referred to as component (B)).

[0014] The powder to be subjected to the hydrophobization treatment can be arbitrarily selected from those generally used in cosmetics. For example, Metal oxides such as titanium dioxide, iron oxides (yellow iron oxide, black iron oxide, and red iron oxide), zinc oxide, cerium oxide, aluminum oxide, chromium oxide, and chromium hydroxide; metal complexes such as manganese violet and green spinel (cobalt titanate); and inorganic pigments such as carbon black; Organic pigments such as tar-based dyes and lake pigments; and Natural pigments such as carmine Examples of pigment powders include the following.

[0015] The powders used can be selected according to the purpose, but when the composition is used as a cosmetic, it is preferable to use inorganic pigments that have a good effect in covering the scalp, and it is more preferable to use titanium dioxide, iron oxide, or zinc oxide. Two or more of these powders can also be used in combination.

[0016] Such powders are known to exist in various particle sizes. The particle size of the powder can be selected according to the purpose, but a primary particle size of 0.1 μm or larger is preferred, and 0.2 μm or larger is more preferred. Fine particle powders with smaller primary particle sizes can also be used depending on the purpose.

[0017] Furthermore, the powders used in this invention may include fine particle powders with a smaller particle size than those generally used for pigments and the like. Examples of such powders include those with ultraviolet scattering effects. Known powders with such effects (hereinafter sometimes referred to as ultraviolet scattering agents) include inorganic particles, preferably fine particle metal oxides. Ultraviolet scattering agents can be used individually or in combination of two or more.

[0018] The fine-particle metal oxides used as UV scattering agents are preferably at least one selected from the group consisting of fine-particle zinc oxide, fine-particle titanium oxide, and fine-particle cerium oxide, and more preferably at least one selected from the group consisting of fine-particle zinc oxide and fine-particle titanium oxide, from the viewpoint of scattering ultraviolet rays and enhancing the UV protection effect. Furthermore, these fine-particle metal oxides can contain metals with a valent or higher valency, and metals or oxides such as iron, zirconium, calcium, manganese, magnesium, and yttrium can be incorporated into the composition individually or in appropriate combinations of two or more.

[0019] Examples of particle shapes for ultraviolet scattering agents include spherical, rod-shaped, spindle-shaped, needle-shaped, and irregular shapes.

[0020] The average primary particle size of the UV scattering agent is preferably less than 100 nm, more preferably 90 nm or less, even more preferably 70 nm or less, and even more preferably 50 nm or less, from the viewpoint of enhancing the UV protection effect and improving emulsification stability, and also preferably 1 nm or more, more preferably 3 nm or more, and even more preferably 5 nm or more, from the same viewpoint as above. More specifically, the average primary particle size of the UV scattering agent is preferably 1 nm or more and 90 nm or less, even more preferably 1 nm or more and 70 nm or less, even more preferably 1 nm or more and 50 nm or less, even more preferably 3 nm or more and 50 nm or more, and even more preferably 5 nm or more and 50 nm or less, from the viewpoint of enhancing the UV protection effect.

[0021] The average primary particle diameter of an ultraviolet scattering agent can be determined, for example, from an image observed using a transmission electron microscope (TEM). Specifically, it can be determined by observing the image with a TEM at, for example, a magnification of 50,000x, measuring the maximum minor diameter of 300 primary particles in the observed image, and calculating the average number of these measurements. Here, the maximum minor diameter refers to the minor diameter with the longest length among the minor diameters perpendicular to the major diameter.

[0022] In the composition according to the present invention, component (B) is a hydrophobized powder. By subjecting the powder to a hydrophobization treatment, when the composition is used as a cosmetic, a tone-up effect is obtained, the squeaky feeling that may occur at that time is reduced, improving usability and improving the longevity of the makeup after use. Such hydrophobization treatments can be selected from the group consisting of metal soap treatment, fatty acid treatment, and amino acid treatment. These hydrophobization treatments are preferred because they provide a good balance of stickiness, glossiness, and coverage effect during use.

[0023] Metal soap treatments include treatment with salts of carboxyl group-containing compounds such as fatty acids and metals with a valency of 2 or higher. Specifically, these include aluminum stearate treatment, magnesium stearate treatment, and magnesium isostearate treatment.

[0024] Amino acid treatment can be performed using, for example, N-acyl amino acids. N-acyl amino acids or their salts include compounds in which an acyl group, preferably a saturated fatty acid having 12 to 20 carbon atoms, is condensed with the amino group of an amino acid, or salts thereof. Here, glutamic acid or aspartic acid are preferred amino acids. Examples of N-acyl groups include stearoyl groups and lauroyl groups. As for salts, alkali metal salts such as sodium and potassium, and alkaline earth metal salts can be selected, but sodium salts are preferred. Specific examples include disodium N-stearoyl glutamate, sodium N-lauroyl glutamate, sodium lauroyl aspartate, and sodium dilauroyl glutamate lysine.

[0025] Examples of fatty acid treatments include stearic acid treatment and myristic acid treatment, while examples of N-acyl amino acid treatments include lauroyl lysine treatment, dilauroyl glutamate lysine sodium treatment, stearoyl glutamate disodium treatment, and lauroyl aspartate sodium treatment.

[0026] Other known hydrophobic treatments for powders include silane treatment, fluorine treatment, and ester treatment; however, these treatments may not fully exhibit the effects of the present invention.

[0027] In the composition according to the present invention, the content of component (B) is preferably 0.1 to 20% by mass, and more preferably 1 to 15% by mass, based on the total amount of the composition.

[0028] (C)Water The composition according to the present invention comprises water (hereinafter sometimes referred to as component (C)). As the water, water commonly used in cosmetics and the like can be used, such as purified water, deionized water, or tap water.

[0029] The composition according to the present invention contains the above components (A) to (C) as essential components, and component (B) is dispersed in component (C). The composition according to the present invention may be an aqueous composition or an aqueous dispersion such as an oil-in-water emulsion composition. Therefore, "component (B) is dispersed in component (C)" means that in the case of an aqueous composition, component (B) is dispersed throughout the entire composition, and in the case of an aqueous dispersion, it is dispersed in the aqueous phase.

[0030] As described above, in the present invention, component (A) contributes to the dispersion state of component (B). Therefore, the effect obtained may change depending on the mixing ratio of component (A) and component (B) in the composition. For this reason, the ratio of the content of component (A) to the content of component (B), A / B, is preferably 0.05 to 20, and more preferably 0.1 to 5.

[0031] The composition according to the present invention contains the above components (A) to (C) as essential components, but any other components may be added as needed.

[0032] One such optional component is an alcohol (hereinafter sometimes referred to as component (D)). Alcohols can be classified into polyhydric alcohols, lower alcohols, etc., but polyhydric alcohols are particularly preferred because they function as humectants and dispersion stabilizers. Examples of such polyhydric alcohols include butylene glycol, propylene glycol, and glycerin, with the inclusion of butylene glycol being particularly preferred. In addition, ethanol and isopropyl alcohol can also be used as alcohols.

[0033] If the composition according to the present invention contains component (D), its content is preferably 0.5 to 15% by mass, and more preferably 1 to 10% by mass, relative to the total amount of the composition.

[0034] Furthermore, the composition according to the present invention may be an aqueous dispersion. Typically, the composition according to the present invention may be an oil-in-water emulsion composition, in which case an oil component that forms the oil phase (hereinafter sometimes referred to as component (E)) is included.

[0035] (E) The component is not particularly limited and can be arbitrarily selected and used from those that can be used in cosmetics, etc. (E) Component can be classified into polar oil and non-polar oil, but Izu can be used or a combination of them can be used.

[0036] Specifically, polar oils include: (e1) Liquid UV absorbers such as octocrylene, 2-ethylhexyl 4-methoxycinnamate, homosalate, 2-ethylhexyl salicylate, hexyl diethylaminohydroxybenzoate, t-butyl methoxydibenzoylmethane, ethylhexyl triazone, and bis-ethylhexyloxyphenol methoxyphenyl triazine. (e2) Ester oils such as diisopropyl sebacate, pentaerythrityl tetraethylhexanoate, cetyl ethylhexanoate, jojoba oil, phytosteryl / octyldodecyl lauroyl glutamate, triisostearin, glyceryl diisostearate, triethylhexanoin, phytosteryl / behenyl dimer dilinoleate, phytosteryl / isostearyl / cetyl / stearyl / isostearyl / cetyl / stearyl / behenyl dimer dilinoleate, isopropyl palmitate, phytosteryl macadamia nut fatty acids, pentaerythrityl tetra(behenate / benzoate / ethylhexanoate), ethylhexyl palmitate, myristyl myristate, isopropyl myristate, tripropylene glycol dipivalate, isodecyl neopentanoate, etc. These are some examples. The composition according to the present invention can be used as a cosmetic for sun care purposes, and in that case, it is preferable to include (e1) a liquid ultraviolet absorber.

[0037] Furthermore, as for non-polar oils, (e3) Chain-like silicone oils such as polydimethylsiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane, and cyclic silicone oils such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane. (e4) Hydrocarbon oils such as decane, dodecane, isododecane, isohexadecane, liquid paraffin, squalane, squalene, and paraffin. These are some examples.

[0038] When the composition according to the present invention is an oil-in-water emulsion composition, such component (E) is preferably in an amount of 1 to 40% by mass, more preferably 2 to 35% by mass, more preferably 3 to 30% by mass, more preferably 5 to 25% by mass, and even more preferably 7 to 20% by mass, based on the total amount of the composition.

[0039] The compositions according to the present invention may further contain other optional components depending on their purpose. Examples of optional components include those listed below, and one or more may be included as long as the effects of the present invention are achieved.

[0040] (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, various herbal medicines, tocopherol acetate, glycyrrhizic acid and its derivatives or salts, ceramide NP, etc. (k) Whitening agents other than component (A), such as alkoxysalicylic acids or their salts, such as potassium 4-methoxysalicylate, vitamin C, magnesium ascorbate phosphate, ascorbate glucoside, niacinamide, etc.

[0041] The compositions according to the present invention are typically aqueous compositions or oil-in-water emulsion compositions, and generally have a liquid dosage form. The viscosity of these compositions at 30°C, as measured using a B-type viscometer, is preferably 20,000 mPa·s or less, and more preferably 10,000 mPa·s or less.

[0042] The compositions according to the present invention can be, for example, makeup cosmetics (e.g., foundation, makeup base, etc.), skincare cosmetics (e.g., lotion, emulsion, cream, serum, mask, etc.), sunscreen cosmetics, ointments, etc.

[0043] The compositions 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]

[0044] 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.

[0045] [Examples 1-13, Comparative Examples 1-3] The compositions for each example and each comparative example were prepared using the formulations shown in Table 1.

[0046] Furthermore, the dispersibility of these compositions was evaluated as follows. Multiple 50 ml screw-cap tubes were prepared, and 30 g of each prepared composition was placed in each. The state immediately after shaking 100 times was visually evaluated. The evaluation criteria were as follows: A: The powder is dispersed throughout. B: The powder is dispersed throughout, but aggregation is present. C: The powder immediately aggregates and does not disperse.

[0047] [Table 1-1]

[0048] [Table 1-2]

[0049] Examples of formulations when the composition according to the present invention is used as an oil-in-water emulsion cosmetic are shown below. [Table 2]

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) Hydrophobized powder, and (C) Water A composition comprising The hydrophobic treatment comprises one or more treatments selected from the group consisting of metal soap treatment, fatty acid treatment, and amino acid treatment. A composition in which component (B) is dispersed in water.

2. The composition according to claim 1, which is an aqueous dispersion.

3. The composition according to claim 1, wherein the content of component (A) is 0.3 to 10% by mass with respect to the total amount of the composition.

4. The composition according to claim 1, wherein the content of component (B) is 0.1 to 20% by mass with respect to the total amount of the composition.

5. (D) The composition according to claim 1, further comprising an alcohol.

6. The composition according to claim 5, wherein component (D) comprises butylene glycol.

7. An oil-in-water emulsion composition comprising the composition according to any one of claims 1 to 6.

8. A method for producing the composition according to any one of claims 1 to 6.

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