阅读说明：本技术 水性化妆料 (Aqueous cosmetic ) 是由 竹泽俊平 于 2020-04-22 设计创作，主要内容包括：本发明公开了一种含有多元醇以及胭脂红酸,并且胭脂红酸的含量相对于水性化妆料总量为0.2质量％以上且不足2质量％的水性化妆料。(Disclosed is an aqueous cosmetic containing a polyol and carminic acid, wherein the content of carminic acid is 0.2% by mass or more and less than 2% by mass relative to the total amount of the aqueous cosmetic.)

1. An aqueous cosmetic composition, wherein,

the aqueous cosmetic contains a polyhydric alcohol and carminic acid, and the content of carminic acid is 0.2 mass% or more and less than 2 mass% relative to the total amount of the aqueous cosmetic.

2. The aqueous cosmetic according to claim 1, wherein,

the content of the polyhydric alcohol is 0.5-70% by mass relative to the total amount of the aqueous cosmetic.

3. The aqueous cosmetic according to claim 1 or 2, wherein,

the content of water is 30 to 99.3% by mass based on the total amount of the aqueous cosmetic.

4. The aqueous cosmetic according to claim 1 or 2, wherein,

the polyol has 2 to 6 hydroxyl groups.

5. The aqueous cosmetic according to claim 1 or 2, wherein,

the viscosity of the aqueous cosmetic at 25 ℃ is 2 to 50 mPas as measured by a Brookfield viscometer.

6. The aqueous cosmetic according to claim 1 or 2, wherein,

the aqueous cosmetic is used for eyebrow and eye.

7. A pen-type aqueous cosmetic having:

a pen container, and the aqueous cosmetic composition according to any one of claims 1 to 6 filled in the pen container.

Technical Field

The present invention relates to an aqueous cosmetic.

Background

The color material is an essential component in a cosmetic for makeup. In cosmetics containing color materials, organic synthetic pigments which are inexpensive, stable, and high in color value are mainly used (for example, patent document 1). However, depending on the part of the cosmetic material used and the country or region, the usable synthetic color material may be limited.

Patent document

Patent document 1: japanese laid-open patent publication No. 2010-180175

Patent document 2: japanese patent laid-open No. 2008-13487

Disclosure of Invention

Carminic acid, which is one of natural color materials, is a main color component of cochineal pigment. It is known that carminic acid changes color from orange to red by releasing hydrogen atoms of chromophores and causing conjugation as the pH of the aqueous solution changes to the alkaline side. Moreover, carminic acid is an unstable pigment that is susceptible to oxidation reaction by light and heat and is likely to fade with time.

Heretofore, a cosmetic containing a small amount of carminic acid has been known (for example, patent document 2). However, the conventional cosmetic containing carminic acid is not intended to color a part such as a face with a cosmetic, because a small amount of carminic acid is added for the purpose of coloring the cosmetic itself.

The present inventors have newly focused on obtaining a cosmetic containing carminic acid at a high concentration. However, it has been found that in a cosmetic containing carminic acid at a high concentration, precipitation and discoloration of carminic acid easily occur, and it is difficult to stably maintain a dissolved state of carminic acid for a long period of time.

The purpose of the present invention is to provide an aqueous cosmetic containing carminic acid at a high concentration stably for a long period of time.

The aqueous cosmetic of the present invention contains a polyol and carminic acid, and the content of carminic acid is 0.2 mass% or more and less than 2 mass% with respect to the total amount of the aqueous cosmetic.

The aqueous cosmetic of the present invention contains a polyol, and thus can stably contain carminic acid for a long period of time even when the carminic acid is at a high concentration. Further, since the aqueous cosmetic of the present invention uses carminic acid, which is a natural pigment, as a coloring material, it can be suitably used in a region where the usable coloring material such as eyebrow and eyebrow is limited depending on the country or region.

The content of the polyhydric alcohol in the aqueous cosmetic is preferably 0.5 to 70% by mass based on the total amount of the aqueous cosmetic. If the amount of the polyhydric alcohol is within the above range, the stability of carminic acid can be further improved and the discoloration of carminic acid can be further suppressed.

The content of water in the aqueous cosmetic is preferably 30 to 99.3% by mass based on the total amount of the aqueous cosmetic. When the water content is within the above range, precipitation of carminic acid in the aqueous cosmetic can be further suppressed, and a state in which carminic acid is dissolved at a high concentration can be stably maintained for a long period of time.

In the aqueous cosmetic, the polyhydric alcohol preferably has 2 to 6 hydroxyl groups. With the above configuration, the aqueous cosmetic can be further stably held for a long period of time.

The viscosity of the aqueous cosmetic composition at 25 ℃ is preferably 2 to 50 mPas as measured by a Brookfield viscometer. If the viscosity is within the above range, the aqueous cosmetic composition is particularly suitable for filling a pen-shaped container with the aqueous cosmetic composition.

The aqueous cosmetic can be used for eyebrow and eye.

The present invention also provides a pen-type aqueous cosmetic composition comprising a pen-type container and the aqueous cosmetic composition filled in the pen-type container.

According to the present invention, there is provided an aqueous cosmetic containing carminic acid stably at a high concentration.

Drawings

FIG. 1 is a schematic sectional view showing a pen-type aqueous cosmetic.

Detailed Description

Embodiments of the present invention will be described in detail below. However, the present invention is not limited to the following embodiments, and can be implemented by being variously modified within the scope of the present invention.

The aqueous cosmetic of the present invention contains a polyol and carminic acid, and the content of carminic acid is 0.2 mass% or more and less than 2 mass% with respect to the total amount of the aqueous cosmetic.

In the aqueous cosmetic according to the present embodiment, the content of carminic acid is 0.2% by mass or more, preferably 0.3% by mass or more, and more preferably 0.4% by mass or more, based on the total amount of the aqueous cosmetic. If it is to touchA content of the fatty acid in the above range is preferable because the color development is excellent and the color fading can be further suppressed. The content of carminic acid may be less than 2.0% by mass, or 1.9% by mass or less, 1.8% by mass or less, 1.7% by mass or less, or 1.5% by mass or less based on the total amount of the cosmetic. When the content of carminic acid is less than 2.0 mass%, precipitation of carminic acid can be suppressed. The amount of carminic acid may be quantified by high performance liquid chromatography. The presence or absence of carminic acid in the aqueous cosmetic composition can be controlled ¹H-NMR measurement.

Examples of commercially available carminic acid include カルミンレッド K (キリヤ science), カルミンレッド MK-40(キリヤ science), CARMIN SOLUBLE W3014 (センシエント), キドレニン CA (Mitsubishi ケミカルフーズ), テクノカラーレッド C2/CKD (Mitsubishi ケミカルフーズ), レッド 689 (Toyo アドレ Co., Ltd.), クリエーションカラー RC (グリコ Eka ) and the like.

The content of water in the aqueous cosmetic according to the present embodiment may be, for example, 28 mass% or more, 30 mass% or more, 35 mass% or more, 40 mass% or more, 45 mass% or more, 50 mass% or more, 55 mass% or more, 60 mass% or more, 65 mass% or more, 70 mass% or more, 75 mass% or more, or 80 mass% or more with respect to the total amount of the aqueous cosmetic. It is preferable that the content of water is 30% by mass or more because precipitation of carminic acid can be further suppressed.

The content of water may be, for example, less than 99.8 mass%, 99.5 mass% or less, 99.3 mass% or less, 99 mass% or less, 98 mass% or less, 97 mass% or less, 95 mass% or less, 93 mass% or less, or 90 mass% or less with respect to the total amount of the aqueous cosmetic. The content of water is preferably 30 to 99.3% by mass based on the total amount of the aqueous cosmetic. The amount of water in the aqueous cosmetic can be measured by the Karl Fischer (Karl Fischer) method.

In the cosmetic, the ratio of carminic acid to water is preferably 2% by mass or less. When the ratio of carminic acid to water is 2% by mass or less, precipitation of carminic acid can be further suppressed, which is preferable. The ratio of carminic acid to water may be 1.8% by mass or less, 1.6% by mass or less, 1.3% by mass or less, or 1.0% by mass or less. The ratio of carminic acid to water may be, for example, 0.1% by mass or more, or may be 0.2% by mass or more, 0.3% by mass or more, or 0.5% by mass or more.

The polyol means an alcohol having two or more hydroxyl groups (alcoholic hydroxyl groups) in the molecule. The polyol may be an unsaturated polyol or a saturated polyol. From the viewpoint of maintaining the color stability of the aqueous cosmetic composition over a longer period of time (for example, about half a year, 1 year, or 1 year or more), the number of hydroxyl groups of the polyol is preferably 2 to 6, more preferably 2 to 3, and still more preferably 2. From the same viewpoint, the number of carbon atoms of the polyol may be, for example, 2 to 8, preferably 2 to 6, and more preferably 2 to 4. The molecular weight of the polyol may be, for example, 50 to 300, preferably 50 to 200.

The polyhydric alcohol may be, for example, 1, 3-butanediol, 1, 2-propanediol, 1, 3-propanediol (trimethyleneglycol), 1, 2-butanediol, tetramethylene glycol, 2, 3-butanediol, 1, 5-pentanediol, 2-butene-1, 4-diol, hexanediol, octanediol, glycerin, trimethylolpropane, pentaerythritol, xylitol, sorbitol, mannitol, or the like. Butanediol is particularly preferable from the viewpoint of appropriate molecular size and number of hydroxyl groups.

The content of the polyhydric alcohol is preferably 70% by mass or less, more preferably less than 70% by mass, even more preferably 65% by mass or less, and even more preferably 60% by mass or less, based on the total amount of the aqueous cosmetic. When the content of the polyhydric alcohol is within the above range, carminic acid can be contained more stably for a long period of time, which is preferable. The content of the polyhydric alcohol may be 55% by mass or less, 50% by mass or less, 45% by mass or less, 40% by mass or less, 35% by mass or less, 30% by mass or less, 25% by mass or less, 20% by mass or less, or 15% by mass or less with respect to the total amount of the aqueous cosmetic.

The content of the polyhydric alcohol is preferably 0.5% by mass or more based on the total amount of the aqueous cosmetic. It is preferable that the content of the polyhydric alcohol is 0.5% by mass or more because carminic acid can be contained more stably for a long period of time. The content of the polyhydric alcohol may be 0.8% by mass or more, 1% by mass or more, 3% by mass or more, 5% by mass or more, 8% by mass or more, or 10% by mass or more based on the total amount of the aqueous cosmetic. From the above viewpoint, the content of the polyhydric alcohol is preferably 0.5 to 70% by mass, and more preferably 1 to 70% by mass, based on the total amount of the aqueous cosmetic.

The aqueous cosmetic composition according to the present embodiment may be a non-emulsified cosmetic composition.

The aqueous cosmetic composition according to the present embodiment may further contain a small amount of an oil agent. The content of the oil agent is preferably 0 to 10% by mass, and may be 0 to 8% by mass or 0 to 5% by mass based on the total amount of the aqueous cosmetic.

The aqueous cosmetic composition according to the present embodiment may further contain a monohydric alcohol. When the aqueous cosmetic contains a monohydric alcohol, the content of the monohydric alcohol may be, for example, 30 mass% or less, 25 mass% or less, 20 mass% or less, 15 mass% or less, 10 mass% or less, 7 mass% or less, or 5 mass% or less based on the total amount of the aqueous cosmetic. The content of the monohydric alcohol may be, for example, 0.1 mass% or more, 0.5 mass% or more, 0.8 mass% or more, or 1 mass% or more based on the total amount of the aqueous cosmetic composition. The monohydric alcohol includes ethanol, isopropanol, propanol, benzyl alcohol, and phenylpropanol.

The aqueous cosmetic according to the present embodiment may further contain a chelating agent, but preferably does not contain a chelating agent. The aqueous cosmetic according to the present embodiment can stably maintain carminic acid for a long period of time even if it does not contain a chelating agent.

The pH of the aqueous cosmetic composition according to the present embodiment may be, for example, 3 to 9, preferably 4 to 9, more preferably 6 to 8.7, and still more preferably 6.5 to 8.5. The color tone of carminic acid may be adjusted by adjusting the pH. The pH can be adjusted by a pH adjuster.

The aqueous cosmetic material according to the present embodiment may further contain a coloring agent in addition to carminic acid. As the colorant, known dyes, pigments, etc. blended in general cosmetics can be used. The dye may be, for example, red No. 227, blue No. 1, yellow No. 4, yellow No. 5, or the like. The pigment may be natural pigment such as safflower. The pigment may be, for example, an inorganic coloring pigment, an organic coloring pigment, a pearlescent pigment, or the like. Examples of the inorganic coloring pigment include carbon black, iron oxide red, iron oxide yellow, cobalt oxide, chromium oxide, ultramarine, iron blue, titanium oxide, and acidified zinc. Examples of the organic color pigment include red 228, red 226, blue 404, red 202, yellow 4 aluminum lake, and carmine aluminum lake. The pearlescent pigment may be, for example, mica titanium, fish scale foil, bismuth oxychloride, or the like.

The aqueous cosmetic composition of the present embodiment may further contain an extender pigment. Examples of the extender pigment include resin particles such as silica, glass powder, anhydrous silicic acid, aluminum silicate, magnesium aluminum silicate, mica, synthetic sericite, talc, kaolin, silicon carbide, barium sulfate, and PMMA (polymethyl methacrylate).

The aqueous cosmetic composition according to the present embodiment may further contain a thickener. By using the thickener, the aqueous cosmetic can be provided with appropriate viscosity. As the thickener, for example, a polysaccharide-based, cellulose-based, alginic acid-based, vinyl-based, acrylic, acrylamide-based thickener, or the like can be used.

Examples of the cellulose-based thickener include methyl cellulose, ethyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and hydroxypropyl methyl cellulose. Examples of the alginic acid thickener include sodium alginate and propylene glycol alginate. Examples of the other polysaccharide-based thickener include sodium chondroitin sulfate, pectin, guar gum, xanthan gum, carrageenan, gellan gum, gum arabic, and sodium hyaluronate.

Examples of the vinyl thickener include polyvinyl alcohol (PVA), polyvinyl pyrrolidone (PVP), a vinyl pyrrolidone/vinyl acetate copolymer (VP/VA copolymer), a carboxyvinyl polymer, an alkylated carboxyvinyl polymer, and sodium polyacrylate. Examples of the acrylic thickener include acrylic acid/alkyl methacrylate copolymers and acrylic acid-alkyl acrylate copolymers. Examples of the acrylamide thickener include a (hydroxyethyl acrylate/sodium acryloyldimethyltaurate) copolymer, a (sodium acrylate/sodium acryloyldimethyltaurate) copolymer, an (ammonium acryloyldimethyltaurate/VP) copolymer, and a (ammonium acryloyldimethyltaurate/behenyl polyether-25 methacrylate) crosslinked polymer.

The aqueous cosmetic composition according to the present embodiment may further contain a dispersant. The use of a dispersant is preferable from the viewpoint of improving the dispersion stability of a colorant other than carminic acid, particularly a pigment. As the dispersant, for example, a surfactant such as a hydrophilic nonionic surfactant, an anionic surfactant, a cationic surfactant, or an amphoteric surfactant can be used.

Examples of the hydrophilic nonionic surfactant include polyoxyalkylene alkyl ethers, glycerin alkyl ethers, fatty acid glycerides, polyglycerol fatty acid esters, sorbitan fatty acid esters, alkylene glycol adducts thereof, polyalkylene glycol fatty acid esters (polyalkylene glycol fatty acid esters), polyglycerol-modified silicones, and polyether-modified silicones. Examples of the anionic surfactant include alkyl phosphates, polyoxyalkylene alkyl ether phosphates, sulfonates, alkyl sulfates, polyaspartates, and the like. Examples of the cationic surfactant include alkylamine salts and alkyltrimethylammonium salts. Examples of the amphoteric surfactant include lecithin, a carbonized betaine amphoteric surfactant, a thiobetaine amphoteric surfactant, and an amino acid amphoteric surfactant. The dispersant may be used singly or in combination of two or more. As the dispersant, nonionic surfactants and/or anionic surfactants are preferable.

When the aqueous cosmetic according to the present embodiment contains the dispersant, the content of the dispersant may be, for example, 0.005 to 2% by mass, 0.008 to 1.5% by mass, or 0.008 to 1% by mass, based on the total amount of the aqueous cosmetic.

The aqueous cosmetic according to the present embodiment may further contain, as other components, for example, a preservative, a film-forming agent, a humectant, an ultraviolet absorber, an ultraviolet scattering agent, an antioxidant, a fragrance, and the like. The content of the preservative may be, for example, 0 to 1% by mass based on the total amount of the aqueous cosmetic. The content of the film-forming agent may be, for example, 0 to 15% by mass or 1 to 10% by mass based on the total amount of the aqueous cosmetic.

The viscosity of the aqueous cosmetic composition according to the present embodiment at 25 ℃ may be, for example, 1 to 2000 mPas or 2 to 1500 mPas. When the aqueous cosmetic is used by being filled in a pen container described later, for example, the viscosity of the aqueous cosmetic is preferably 2 to 50mPa · s, more preferably 3 to 30mPa · s, and still more preferably 4 to 20mPa · s. When the pen-shaped container is filled with the aqueous cosmetic composition, it is preferable from the viewpoint of the discharge property and the following property if the viscosity is within the above range.

The viscosity is a value measured using a brookfield viscometer under the following conditions on a sample at 25 ℃.

5 to 50mPa · s: BL adapter (adapter) with 12rpm rotation speed

50 to 500 mPas: rotor No.1, speed 12rpm

250 to 2500mPa · s: rotor No.2, speed of 12rpm

1000-10000 mPa · s: rotor No.3, speed of 12rpm

5000-50000 mPa & s: rotor No.4, speed of 12rpm

The aqueous cosmetic according to the present embodiment is suitable for makeup, and may be, for example, an eyebrow cosmetic, eyeliner, eyeshadow, lipstick, lip liner, or blush. The use of carminic acid is often permitted even in countries or regions where restrictions on the color materials that can be used in cosmetics for the eyebrow eye are strict. Therefore, the aqueous cosmetic according to the present embodiment can be suitably used for eyebrow cosmetics such as eyebrow cosmetics, eyeliners, and eyeshadows.

The aqueous cosmetic according to the present embodiment can be used in a known product form used for cosmetics. Examples of the product form include a pen-type aqueous cosmetic in which a pen-type container is filled with an aqueous cosmetic, and a bottle-type aqueous cosmetic in which a bottle-type container is filled with an aqueous cosmetic. The pen-type aqueous cosmetic includes, for example, a mechanical type or an automatic pen-type cosmetic. The mechanical pen-type aqueous cosmetic may include a cosmetic storage portion such as a fiber bundle impregnated with a cosmetic or a filling portion filled with a cosmetic, and an applicator including a pen or a felt joined to the cosmetic storage portion. In the mechanical type, the cosmetic material can be forcibly discharged by applying a force to the cosmetic material storage section in accordance with a dial (dial) or a knock (knock) or the like. In the automatic pen type, the cosmetic is discharged by the surface tension of the liquid cosmetic and the action of capillary phenomenon.

The aqueous cosmetic according to the present embodiment is preferably used as an automatic pen type cosmetic from the viewpoint of convenience of the method of use and portability. As the automatic pen-type container, a known container can be used, and for example, a liquid cosmetic container disclosed in japanese patent laid-open No. 2016-87094 can be mentioned.

FIG. 1 is a schematic sectional view showing a pen-type aqueous cosmetic. The overall shape of the pen-type aqueous cosmetic 100 shown in fig. 1 is similar to a pen, and is in the form of an elongated round rod. The pen-type aqueous cosmetic 100 includes a substantially cylindrical container body 1, a storage portion 2 provided in the container body 1 and storing the aqueous cosmetic L according to the present embodiment, a writing brush 3 attached to the tip of the container body 1 and used for applying the aqueous cosmetic L in the storage portion 2, a shaft-shaped relay core 4 disposed in the container body 1 and connecting the interior of the storage portion 2 and the writing brush 3, and a substantially cylindrical coil member 5 attached around the relay core 4. In fig. 1, a bottomed cylindrical grip tube 6 is detachably attached to the container body 1 by screwing, and thus, the user can easily grip the container body 1 to perform application. The container body 1 is not limited to a cylindrical shape, and may be a rectangular tube or the like.

The container body 1 is formed of, for example, PP (polypropylene) or the like, and is configured in a cylindrical shape with a flange and a tapered tip. The front end surface of the grip cylinder 6 screwed into the container body 1 abuts against the rear end surface of the flange portion provided on the outer peripheral surface of the container body 1, and the open end surface of the cap 10 attached to the container body 1 abuts against the front end surface of the flange portion. The opening at the rear end of the container body 1 is closed by inserting a bottomed cylindrical tail plug 7.

The coil member 5 is used for controlling the flow rate of the aqueous cosmetic L and has a groove (coil) containing the aqueous cosmetic L. The cylindrical rear end portion of the coil member 5 is fitted into a recess in the inner circumferential surface of the container body 1, and is attached to the container body 1. The storage section 2 is formed between the rear end of the coil member 5 and the tail plug 7 in the container body 1, and the aqueous cosmetic L is stored in the storage section 2.

The relay core 4 is formed of, for example, acrylic resin or the like, and extends in the axial direction so as to pass through the cylindrical hole of the coil member 5. The relay core 4 is attached to the coil member 5 by fitting the tip end side thereof to the tip end side of the coil member 5. The relay core 4 has a rear end portion inserted into the housing portion 2 and a front end portion inserted into the writing brush 3, thereby connecting the interior of the housing portion 2 and the writing brush 3. The relay core 4 can suck up the aqueous cosmetic L in the storage unit 2 by capillary action and supply the cosmetic L to the writing brush 3.

In the pen-type aqueous cosmetic material 100 shown in fig. 1, the application body is a writing brush, but may be replaced with a writing tip such as a felt tip, a urethane tip, a nylon tip, a polyester tip, or an olefin tip.

A bottomed cylindrical cap 10 for protecting the writing brush 3 and the like is detachably attached to the distal end side of the container body 1 by fitting.

In the pen-type aqueous cosmetic 100, the stirrer 20 movable in the axial direction and the coil spring 21 extendable and retractable in the axial direction are housed in the housing portion 2 together with the aqueous cosmetic L. The stirrer 20 is a sphere in a particularly preferred form in fig. 1, but may be a polyhedron, a cone, or the like.

The coil spring 21 is an integrally formed spring in which a plurality of spring portions having different diameters (two spring portions having different diameters in fig. 1) are integrally connected in the axial direction, and is formed of, for example, SUS. The coil spring 21 has a small-diameter spring portion having a diameter smaller than the diameter of the agitator 20 in the rear half portion, and a large-diameter spring portion having a diameter larger than the diameter of the agitator 20 is provided adjacent to the front portion of the small-diameter spring portion in the axial direction.

The stirrer 20 is provided so as to be movable in the axial direction within a large-diameter spring portion constituting the coil spring 21. Therefore, if the user vibrates the pen-type aqueous cosmetic 100, the agitator 20 moves in the axial direction, and the aqueous cosmetic L is agitated by the movement of the agitator 20.

In the pen-type aqueous cosmetic 100 configured as described above, the aqueous cosmetic L in the storage portion 2 flows out to the writing brush 3 on the tip side via the relay core 4, and is applied by the user using the writing brush 3. In the pen-type aqueous cosmetic 100 according to the present embodiment, the stirrer 20 and the coil spring 21 are provided, so that the aqueous cosmetic L can be efficiently discharged to the writing brush 3. The above configuration may be changed to a configuration not including the stirrer 20 and the coil spring 21.

As described above, the pen-type aqueous cosmetic 100 having a so-called direct-liquid type structure is exemplified as an automatic pen-type container that can use the aqueous cosmetic according to the present embodiment. However, the container is not particularly limited to such a structure, and a known structure may be used. For example, a container having a so-called wick structure may be used, in which the coil member 5, the stirrer 20, and the coil spring 21 of the pen-type aqueous cosmetic 100 are omitted, the wick member impregnated with the aqueous cosmetic L is stored in the storage portion 2, and the aqueous cosmetic L is sucked up and supplied to the writing brush 3 through the intermediate core 4 having a part of the rear end side entering the inside of the wick member.