JP7252605B2 - water-based liquid cosmetics - Google Patents

Description

TECHNICAL FIELD The present invention relates to a water-based liquid cosmetic.

As a product form of liquid cosmetics, pen-type cosmetics are used in addition to bottle-type cosmetics in which cosmetics are directly filled in a container. The pen type includes a cosmetic storage part such as a fiber bundle impregnated with cosmetics or a filling part filled with cosmetics, and an application part made of a brush or felt connected thereto. There are known a mechanical type in which the cosmetic is forcibly ejected by applying force to the reservoir, and an automatic pen type in which the cosmetic is ejected by the action of the surface tension of the liquid cosmetic and capillary action.

In recent years, glittering powders such as pearl pigments are often blended in water-based liquid cosmetics such as eyeliners for the purpose of producing glittering and impressive eyes. Glittering powder can impart a pearly feel to the coating film, but on the other hand, it tends to sediment in the liquid cosmetic because its particle size is much larger than that of ordinary coloring pigments. Therefore, when a water-based liquid cosmetic containing glittering powder is used in the form of a pen, glitter can be found in the gaps between the fibers in the application part using a brush tip composed of an aggregate of fine fibers during writing. Powder may clog. In addition, if the viscosity of the cosmetic is made low for the purpose of improving the dischargeability and making it easier for the liquid to be absorbed into the application area, the glittering powder tends to settle in the cosmetic storage area, and if left for a long period of time, it will become difficult. The sedimented glitter powder forms a hard cake, which may not be sufficiently redispersed even with stirring. If the glitter powder clogs the applied portion or cannot move sufficiently to the applied portion, the drawn line will be blurred or shaded.

Techniques aimed at solving the above problems have been proposed so far. Regarding color development and storage stability, for example, Patent Document 1 below discloses a water-based eyeliner composition containing a combination of a bright pigment, carbon black, a microorganism-derived polysaccharide, a volatile alcohol, and an alkyl acrylate copolymer emulsion. Patent Document 2 below proposes a liquid cosmetic composition for eye makeup containing an aqueous emulsion of an acrylic polymer having a specific Tg, fermented cellulose, and a flat pigment. . In addition, with respect to ejection properties and redispersibility, for example, Patent Document 3 below describes water-based liquid makeup containing a plate-like pigment, a pigment dispersant, a film-forming agent, a predetermined amount of a surfactant, and a spherical pigment. Up cosmetics have been proposed.

JP 2007-153744 A JP 2017-114825 A International publication WO2007/123115

However, even with the technique disclosed in the above-mentioned patent document, in the case of using the water-based liquid cosmetic containing glittering powder in the form of a pen, sedimentation suppression and redispersion of glittering powder and ejection of cosmetics It is still not enough to satisfy all of the characteristics and the pearly feeling of drawn lines. For example, when trying to suppress the sedimentation of glittering powder by using fermented cellulose or polysaccharides derived from microorganisms, it is difficult to obtain a sufficient sedimentation-suppressing effect while reducing the viscosity.

The present invention has been made in view of the above circumstances. To provide a water-based liquid cosmetic capable of being sufficiently discharged even in a type form and capable of stably forming lines having a pearly feel.

In order to solve the above problems, the present invention provides (A) sodium polyaspartate, (B) at least one glittering powder selected from the following Groups B1 and B2, (C) a water-soluble dispersant, and (D) Provide an aqueous liquid cosmetic containing at least one metal oxide selected from Groups D1 and D2 below.
B1 group: metal or metal oxide-coated glass powder, aluminum powder B2 group: metal-coated resin film powder D1 group: yellow iron oxide, red iron oxide, black iron oxide, titanium dioxide, titanium oxynitride D2 group: Prussian blue

According to the water-based liquid cosmetic of the present invention, by having the above-described configuration, even if the viscosity is low, the glitter powder does not easily settle, and the storage stability is excellent, and the sedimented glitter powder is also redispersible. Even in the form of a pen, it can be sufficiently discharged, and it is possible to stably form drawn lines with a pearly feel.

In addition, the water-based liquid cosmetic of the present invention can be stably discharged even if it is an automatic pen type. In the auto-pen type, since the capillary force and the holding power of the liquid differ depending on the type of application part, it tends to be more difficult to discharge with a brush than with a felt, but the water-based liquid cosmetic of the present invention consists of a brush. Even an automatic pen type having an application part can stably discharge.

From the standpoint of facilitating viscosity adjustment while improving the dispersibility of glitter powder and pigment, the component (C) consists of polyvinylpyrrolidone, polyvinyl alcohol, vinylpyrrolidone/vinyl acetate copolymer, and acrylic acid polymer. It preferably contains at least one water-soluble polymer selected from the group.

In the water-based liquid cosmetic of the present invention, the contents of the above component (A), the above component (B), the above component (C) and the above component (D) are respectively 0.3 to 5 masses based on the total amount of the cosmetic. %, 0.5-10% by weight, 0.5-5% by weight and 0.5-10% by weight.

In the water-based liquid cosmetic of the present invention, the content of the component (A) is 10 to 200 parts by mass with respect to the content of the component (B) of 100 parts by mass, and the content of the component (C) is 20 to 400 parts by mass, and the content of component (D) may be 12.5 to 1000 parts by mass.

Further, in the water-based liquid cosmetic of the present invention, the component (B) contains (B1) at least one glittering powder selected from the above B1 group, and the component (D) is the total of the components (B1). It may contain 12.5 to 1000 parts by mass of (D1) at least one metal oxide selected from the above group D1 with respect to 100 parts by mass.

Furthermore, in the water-based liquid cosmetic of the present invention, the component (B) contains (B2) a glittering powder selected from the above group B2, and the component (D) is a total of 100 parts by mass of the component (B2). On the other hand, (D2) may contain 100 to 600 parts by mass of a metal oxide selected from the above D2 group.

From the viewpoint of dischargeability, the water-based liquid cosmetic of the present invention preferably has a viscosity of 50 mPa·s or less at 25°C.

According to the present invention, even if the viscosity is low, the glitter powder does not easily sediment, the storage stability is excellent, and the sedimented glitter powder is excellent in redispersibility. It is possible to provide a water-based liquid cosmetic that can be discharged and that can stably form lines having a pearly feel.

FIG. 2 is a schematic cross-sectional view for explaining a liquid cosmetic container;

The water-based liquid cosmetic of the present embodiment comprises (A) sodium polyaspartate (hereinafter sometimes referred to as component (A)), and (B) at least one brightening powder selected from Groups B1 and B2 below. (hereinafter sometimes referred to as component (B)), (C) a water-soluble dispersant (hereinafter sometimes referred to as component (C)), and (D) at least one selected from the following groups D1 and D2 It contains a seed metal oxide (hereinafter sometimes referred to as component (D)).
B1 group: metal or metal oxide-coated glass powder, aluminum powder B2 group: metal-coated resin film powder D1 group: yellow iron oxide, red iron oxide, black iron oxide, titanium dioxide, titanium oxynitride D2 group: Prussian blue

In this specification, the term "aqueous system" means containing at least water. Water-based cosmetics may further contain a lower alcohol having 1 to 5 carbon atoms, such as ethanol, in addition to water.

The water content in the water-based liquid cosmetic of the present embodiment may be 30 to 90% by mass, 40 to 80% by mass, or 50 to 70% by mass, based on the total amount of the cosmetic. may

Moreover, in this specification, the term “liquid” means that the substance exhibits fluidity at 25°C. The viscosity at 25° C. of the water-based liquid cosmetic of the present embodiment may be 10000 mPa·s or less, and can be appropriately set depending on the shape of the container. For example, bottle-type cosmetics preferably have a viscosity of 10000 mPa·s or less at 25°C, and pen-type cosmetics preferably have a viscosity of 5000 mPa·s or less at 25°C.

From the viewpoint of improving ejection properties in an auto-pen type, the water-based liquid cosmetic of the present embodiment preferably has a viscosity at 25° C. of 50 mPa·s or less, more preferably 40 mPa·s or less. , is more preferably 35 mPa·s or less, even more preferably 30 mPa·s or less, particularly preferably 25 mPa·s or less, and most preferably 20 mPa·s or less. From the viewpoint of usability, the water-based liquid cosmetic of the present embodiment preferably has a viscosity at 25° C. of 4 mPa·s or more, more preferably 6 mPa·s or more.

The above viscosity means a value measured under the following conditions for a sample at 25° C. using a Brookfield viscometer (BM type).
5 to 50 mPa・s: BL adapter, rotation speed 12 rpm
50 to 500 mPa s: Rotor No. 1, 12 rpm
250 to 2500 mPa s: Rotor No. 2, 12 rpm
1000 to 10000 mPa s: Rotor No. 3, rotation speed 12 rpm
5000 to 50000 mPa s: Rotor No. 4, 12 rpm

[(A) sodium polyaspartate]
As the sodium polyaspartate, a sodium salt of an aspartic acid polymer that is usually blended in cosmetics can be used. Commercially available products such as Aquadew SPA-30B (manufactured by Ajinomoto Co., Inc., product name, solid content 30% by mass) can also be used.

The content of sodium polyaspartate in the water-based liquid cosmetic of the present embodiment is preferably 0.3 to 5% by mass, more preferably 0.4 to 4% by mass, based on the total amount of the cosmetic. , more preferably 0.5 to 3% by mass, and even more preferably 0.5 to 2% by mass. When the content of sodium polyaspartate is within such a range, it becomes easier to obtain a cosmetic composition having excellent redispersibility of the sedimented lustrous powder.

[(B) component]
Component (B) can be at least one glittering powder selected from Group B1 and Group B2 below.
B1 group: metal or metal oxide-coated glass powder, aluminum powder B2 group: metal-coated resin film powder

Examples of the metal or metal oxide-coated glass powder include titanium oxide-coated glass powder, iron oxide-coated glass powder, silver-coated glass powder, and gold-coated glass powder.

Examples of the metal-coated resin film powder include polyethylene terephthalate/aluminum/epoxy laminate powder, polyethylene terephthalate/silver/epoxy laminate powder, and polyethylene terephthalate/aluminum laminate powder.

Among the above, aluminum powder is preferable from the viewpoint of dischargeability and redispersibility.

(B) component can be used individually by 1 type or in combination of 2 or more types.

The specific gravity of the glitter powder is preferably 4.5 g/cm ³ or less, more preferably 1.5 to 3.5 g/cm ³ , still more preferably 2 to 3 g/cm ³ from the viewpoint of resistance to sinking.

As used herein, specific gravity means true specific gravity. In addition, powder having the following true specific gravity can be used for the glittering powder mentioned above.
Aluminum powder: 2.4-2.7
Metal or metal oxide coated glass powder: 2.5 to 3.5
Metal-coated resin film powder: 1.3 to 1.6

The glitter powder preferably has an average particle size of 1 to 50 μm, more preferably 5 to 40 μm, even more preferably 8 to 30 μm. When the average particle size of the glittering powder is in such a range, it becomes easier to obtain a cosmetic having excellent pearly feeling and ejection properties.

The content of the glitter powder in the water-based liquid cosmetic of the present embodiment is preferably 0.5 to 10% by mass, more preferably 0.6 to 9% by mass, based on the total amount of the cosmetic. , more preferably 0.7 to 8% by mass, and even more preferably 0.8 to 7% by mass. When the content of the glittering powder is within such a range, it becomes easier to obtain a cosmetic having excellent pearly feel and ejection properties.

[(C) water-soluble dispersant]
Water-soluble polymers such as polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), vinylpyrrolidone/vinyl acetate copolymer (VP/VA copolymer), and acrylic acid polymer can be used as the water-soluble dispersant. Acrylic acid polymers include acrylic acid-acrylic acid alkyl ester copolymers. Incidentally, acrylic acid and alkyl acrylate referred to here also include methacrylic acid and alkyl methacrylate, respectively. The above water-soluble polymer may be blended as a mixed solution with water, ethanol, polyhydric alcohol or a mixture thereof.

The above water-soluble polymers are PVP K-30, 60, 90 series (manufactured by ISP Japan, product name), PVP/VA S-630, PVP/VA W-735 (manufactured by ISP Japan, product name), Kuraray Poval PVA series (manufactured by Kuraray Co., Ltd.), Luvimer 100P (manufactured by BASF, product name), and other commercially available products can be used.

A water-soluble dispersant can be used individually by 1 type or in combination of 2 or more types.

The water-based liquid cosmetic of the present embodiment contains polyvinylpyrrolidone, polyvinyl alcohol, vinylpyrrolidone/vinyl acetate copolymer, and acrylic acid from the viewpoint of improving the dispersibility of the glittering powder and pigment and facilitating viscosity adjustment. It preferably contains at least one water-soluble polymer selected from the group consisting of polymers.

The content of component (C) in the water-based liquid cosmetic of the present embodiment is preferably 0.5 to 5% by mass, more preferably 0.6 to 4.5% by mass, based on the total amount of the cosmetic. It is more preferably 0.7 to 4% by mass, even more preferably 0.8 to 3.5% by mass. When the content of the water-soluble dispersant is in such a range, it becomes easier to obtain a cosmetic having excellent pigment dispersibility and ejection properties.

[(D) component]
Component (D) can be blended for the purpose of imparting coloration and sedimentation suppression to glitter powder, and at least one metal oxide selected from the following Groups D1 and D2 can be used.
Group D1: yellow iron oxide, red iron oxide (red iron oxide), black iron oxide, titanium dioxide, titanium oxynitride (titanium black)
D2 group: Prussian blue

Component (D) can be optionally added using silicone compounds, fluorine compounds, metallic soaps, collagen, hydrocarbons, higher fatty acids, lecithin, higher alcohols, esters, waxes, waxes, surfactants, etc., using known methods. You may use what surface-treated by. Moreover, in order to improve the dispersibility of the glittering powder, a dispersion liquid using water as a solvent may be used.

(D) Component can be used individually by 1 type or in combination of 2 or more types.

The metal oxide preferably has an average particle size of 0.5 μm or less, more preferably 0.1 to 0.4 μm, and more preferably 0.15 to 0.35 μm, from the viewpoint of dischargeability from a container. It is even more preferable to have

The specific gravity of the metal oxide is preferably 3 g/cm ³ or more, more preferably 3 to 6 g/cm ³ , further preferably 3 to 5 g/cm ³ .

As for the metal oxides listed above, those having the following true specific gravities can be used.
Yellow iron oxide: 3.4-4.1
Red iron oxide (bengala): 4.2 to 5.2
Black iron oxide: 4.5-5.5
Titanium oxide: 3.5-4.2
Titanium oxynitride (titanium black): 4.3
Prussian blue: 1.7 to 1.9

The content of component (D) in the water-based liquid cosmetic of the present embodiment is preferably 0.5 to 10% by mass, more preferably 1 to 9% by mass, based on the total amount of the cosmetic. It is more preferably 8% by mass, and even more preferably 3 to 7% by mass. When the content of the glittering powder is within such a range, it becomes easy to suppress clogging of the glittering powder in the container and blurring of the drawn line while imparting a sufficient pearly feel to the drawn line.

The content of the component (A) in the water-based liquid cosmetic of the present embodiment can be 10 to 200 parts by mass with respect to 100 parts by mass of the content of the component (B). From the viewpoint of redispersibility, it is preferably 15 to 180 parts by mass, more preferably 20 to 160 parts by mass.

Further, the content of the component (C) in the water-based liquid cosmetic of the present embodiment can be 20 to 1000 parts by mass with respect to 100 parts by mass of the content of the component (B). It is preferably 20 to 500 parts by mass, more preferably 35 to 500 parts by mass, and even more preferably 45 to 400 parts by mass, from the viewpoint of facilitating viscosity adjustment while improving the dispersibility of the body and pigment. stomach.

The content ratio of the component (A) and the component (C) can be 0.06 to 10 by mass ratio [(A) component]/[(C) component], and sedimentation of the bright pigment It is preferably 0.1 to 5, more preferably 0.15 to 2, from the viewpoints of suppression, redispersibility, and dischargeability from a container.

The content of the component (D) in the water-based liquid cosmetic of the present embodiment can be 12.5 to 1500 parts by mass with respect to the content of the component (B) of 100 parts by mass. From the viewpoint of suppressing sedimentation and improving redispersibility of component (B) while improving feeling, the amount is preferably 15 to 1,200 parts by mass, more preferably 30 to 1,000 parts by mass.

In the water-based liquid cosmetic of the present embodiment, the component (B) contains (B1) at least one glittering powder selected from the group B1 (hereinafter sometimes referred to as component (B1)). , From the viewpoint of suppressing sedimentation and improving redispersibility of the (B1) component, and facilitating suppression of clogging of the glitter powder in the container and blurring of drawn lines, the component (D) is the component (B1) With respect to a total of 100 parts by mass, (D1) at least one metal oxide selected from the above D1 group (hereinafter sometimes referred to as (D1) component) preferably contains 10 to 1000 parts by mass, and 20 It is more preferable to contain up to 900 parts by mass.

When the (B) component contains the (B1) component, the (D) component includes the (D1) component and a metal oxide selected from the D2 group (hereinafter sometimes referred to as the (D2) component). may be used in combination, or only the component (D2) may be used.

When component (D1) and component (D2) are used in combination, the total content of these components is 10 to 1000 parts by mass, 20 to 900 parts by mass, or 30 to 800 parts by mass with respect to 100 parts by mass of component (B1). It can be parts by mass, and the content ratio of the (D1) component and the (D2) component is the mass ratio [(D1) component]/[(D2) component] of 0.01 to 100, or 0.03 ~6.5.

When only component (D2) is used as component (D), the content of component (D2) is 10 to 1000 parts by mass, 20 to 900 parts by mass, or 30 to 800 parts by mass with respect to 100 parts by mass of component (B1). can be

In the water-based liquid cosmetic of the present embodiment, when the component (B) contains (B2) a glittering powder selected from the group B2 (hereinafter sometimes referred to as component (B2)), (B2) From the viewpoint of suppressing sedimentation and improving redispersibility of the components, and facilitating suppression of clogging of the glittering powder in the container and blurring of drawn lines, the above component (D) is a total of 100 of the component (B2). With respect to parts by mass, (D2) preferably contains 10 to 1000 parts by mass of a metal oxide selected from the above D2 group (hereinafter sometimes referred to as (D2) component), and may contain 20 to 900 parts by mass. more preferred.

Moreover, when the (B) component contains the (B2) component, the (D1) component and the (D2) component may be used together as the (D) component, or only the (D2) component may be used.

When component (D1) and component (D2) are used together, the total content of these components is 10 to 1000 parts by mass, 20 to 900 parts by mass, or 30 to 800 parts by mass with respect to 100 parts by mass of component (B2). parts, and the content ratio of the (D1) component and the (D2) component is a mass ratio [(D1) component]/[(D2) component] of 0.1/10 to 10/0.1 , or 0.3/10 to 10/1.5.

In the water-based liquid cosmetic of the present embodiment, as the component (B), only the component (B1) or the component (B2) may be used, or the component (B1) and the component (B2) may be used in combination. When the (B1) component and the (B2) component are used together, the content ratio of the (B1) component and the (B2) component is the mass ratio [(B1) component]/[(B2) component] of 0.01. ~20, or 0.1-18.

In the water-based liquid cosmetic of the present embodiment, the sum of the contents of the components (B) and (D) is However, based on the total amount of the cosmetic, it is preferably 0.5% by mass to 20% by mass, more preferably 0.6% by mass to 18% by mass, and 0.7% by mass to 15% by mass. It is even more preferable to have

The water-based liquid cosmetic of the present embodiment can contain powders other than the components (B) and (D) (hereinafter sometimes referred to as other powders).

Other powders include colored inorganic pigments such as carbon black, chromium hydroxide, ultramarine, and titanium nitride, white inorganic pigments such as barium sulfate, Red No. 201, Red No. 202, Red No. 205, Red No. 226, and Red No. 228. No., Orange No. 203, Orange No. 204, Blue No. 404, Yellow No. 401, etc. Organic pigment powders, Red No. 3, Red No. 104, Red No. 106, Orange No. 205, Yellow No. 4, Yellow No. 5, Green 3 Organic pigment powder such as blue No. 1 zirconium, barium or aluminum lake, talc, muscovite, phlogopite, red mica, biotite, synthetic mica, sericite (sericite), synthetic sericite, kaolin, White powders such as silicon carbide, bentonite, smectite, diatomaceous earth, aluminum silicate, magnesium aluminum metasilicate, calcium silicate, barium silicate, magnesium silicate, calcium carbonate, magnesium carbonate, hydroxyapatite, boron nitride, etc. Synthetic resin powder such as polyamide resin, polyethylene resin, polyacrylic resin, polyester resin, fluorine resin, cellulose resin, polystyrene resin, styrene-acrylic copolymer resin, polypropylene resin, urethane resin, etc. Organic polymer resin powder, organic low-molecular-weight organic powder such as zinc stearate and N-acyl lysine, natural organic powder such as silk powder and cellulose powder, mica titanium, dye-coated mica titanium, silver powder, fish scale foil, oxychloride Bright powders other than the component (B) such as bismuth and the like are included.

Other powders can be used singly or in combination of two or more.

Among the above, it is preferable to blend carbon black because it is easy to obtain the effect of making the depth of drawn lines and the effect of emphasizing the pearl feeling.

The water-based liquid cosmetic of the present embodiment preferably contains a film-forming polymer emulsion from the viewpoints of preventing secondary adhesion of a cosmetic film, imparting water resistance, and facilitating make-off.

Examples of the polymer contained in the film-forming polymer emulsion include water-insoluble polymers or copolymers containing alkyl (meth)acrylate monomers as constitutional units. A vinyl acetate monomer, a styrene monomer, etc. are mentioned as a structural unit of a copolymer. In the case of a copolymer, it may be a random copolymer, a graft copolymer, a block copolymer, or a core-shell type copolymer.

Specific examples of film-forming polymer emulsions include alkyl acrylate copolymer emulsions, alkyl acrylate/styrene copolymer emulsions, and alkyl acrylate/vinyl acetate copolymer emulsions. In addition, alkyl methacrylate is also included in the alkyl acrylate mentioned here. The film-forming polymer emulsion uses water as a medium and has a solid content concentration of 30 to 60% by mass.

A commercial product can be used for the film-forming polymer emulsion. Examples of the alkyl acrylate copolymer emulsion include Yodsol GH800F (manufactured by Akzo Nobel, product name, solid content concentration 45% by mass), Yodsol GH810F (manufactured by Akzo Nobel, product name, solid content concentration 46 mass%), and Yodsol GH34F. (manufactured by Akzo Nobel, product name, solid content concentration 42% by mass), Daitosol 5000SJ (manufactured by Daito Kasei Kogyo Co., Ltd., product name, solid content concentration 50% by mass). Examples of the alkyl acrylate/styrene copolymer emulsion include Yodsol GH41F (manufactured by Akzo Nobel, product name, solid content concentration 45% by mass) and Daitosol 5000STY (manufactured by Daito Kasei Kogyo Co., Ltd., product name, solid content concentration 50% by mass). , Emmapoly CE-119N (sold by Nikko Chemicals Co., Ltd., product name), and the like. Examples of the alkyl acrylate/vinyl acetate copolymer emulsion include VINISOL 2140L (manufactured by Daido Kasei Kogyo Co., Ltd., product name, solid content concentration 45% by mass).

Film-forming polymer emulsions may be used singly or in combination of two or more.

The content of the film-forming polymer emulsion in the water-based liquid cosmetic of the present embodiment is preferably 5 to 20% by mass, and preferably 6 to 15% by mass, in terms of solid concentration, based on the total amount of the cosmetic. is more preferable, and 7 to 12% by mass is even more preferable. When the content of the film-forming polymer emulsion is within the above range, it is possible to facilitate make-off while improving the secondary adhesion resistance and water resistance of the cosmetic film.

In the water-based liquid cosmetic according to the present embodiment, in addition to the above ingredients, other ingredients that are usually used in cosmetics, such as surfactants, moisturizers, viscosity modifiers, preservatives, pH adjusters, and chelates. Agents, ultraviolet absorbers, vitamins, beauty ingredients, antioxidants, perfumes, etc. can be appropriately blended as necessary within a range that does not impair the effects of the present invention.

As surfactants, hydrophilic nonionic surfactants, anionic surfactants other than sodium polyaspartate, cationic surfactants, amphoteric surfactants, and the like can be used.

Examples of hydrophilic nonionic surfactants include polyoxyalkylene alkyl ethers, glycerin alkyl ethers, glycerin fatty acid esters, polyglycerin fatty acid esters, sorbitan fatty acid esters, and their alkylene glycol adducts, polyalkylene glycol fatty acid esters, and polyglycerin. Modified silicone, polyether-modified silicone and the like can be mentioned. Examples of anionic surfactants include alkyl phosphates, polyoxyalkylene alkyl ether phosphates, sulfonates, alkyl sulfates, and polyaspartates other than sodium polyaspartate. Examples of cationic surfactants include alkylamine salts and alkyltrimethylammonium salts. Amphoteric surfactants include lecithin, carbobetaine type amphoteric surfactants, sulfobetaine type amphoteric surfactants, amino acid type amphoteric surfactants and the like.

Viscosity modifiers include clay minerals and polysaccharides. Among them, synthetic smectite is preferable in terms of ease of redispersion.

The water-based liquid cosmetic according to the present embodiment is prepared by dissolving or dispersing the above-described components (A), (B), (C), (D), water, and, if necessary, other components. It can be produced by stirring and mixing to.

The water-based liquid cosmetic according to this embodiment can be used as makeup cosmetics such as eyeliner, eyebrow, eyeshadow, and mascara. It is preferably used as an eyeliner from the viewpoint of excellent pearly feeling of drawn lines.

The water-based liquid cosmetic according to this embodiment can be used in the form of known products used in cosmetics. Examples of product forms include pen type and bottle type. As a pen type, it has a cosmetic storage part such as a fiber bundle impregnated with cosmetics or a filling part filled with cosmetics, and an application part made of a brush or felt joined to this, and dials, knocks, etc. mechanical type in which the cosmetic is forcibly ejected by applying force to the reservoir, and auto pen type in which the cosmetic is ejected by the action of surface tension and capillary action of the liquid cosmetic.

The water-based liquid cosmetic according to the present embodiment is preferably used as an auto pen type from the viewpoint of ease of use and portability. A known auto pen type container can be used, for example, a liquid cosmetic container disclosed in JP-A-2016-87094.

FIG. 1 is a schematic cross-sectional view showing a liquid cosmetic container. A liquid cosmetic container 100 shown in FIG. 1 has an overall shape of an elongated round bar like a writing utensil. A storage portion 2 for storing a cosmetic L, a writing brush 3 attached to the tip of the container body 1 for applying the water-based liquid cosmetic L in the storage portion 2, and the storage portion 2 disposed in the container body 1 and the writing brush. 3 and a substantially cylindrical bellows member 5 mounted around the relay core 4 . Here, a bottomed cylindrical grasping tube 6 is detachably attached to the container body 1 by screwing so that the user can easily hold the container body 1 and apply. Note that 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 made of, for example, PP, and has a tapered cylindrical shape with a flange. The rear end surface of the flange provided on the outer peripheral surface of the container body 1 is abutted against the front end surface of the gripping tube 6 screwed into the container body 1, and the front end surface of the flange portion is attached to the container body 1. The open end face of the closed cap 10 is abutted. Further, the opening at the rear end of the container body 1 is closed by inserting and attaching a bottomed cylindrical tail plug 7 .

The bellows member 5 is for controlling the flow rate of the water-based liquid cosmetic L, and has a groove (bellows) containing the water-based liquid cosmetic L. It is attached to the container body 1 by fitting into the concave portion of the surface. The storage portion 2 is formed between the rear end portion of the bellows member 5 and the tail plug 7 in the container body 1, and the water-based liquid cosmetic L is stored in the storage portion 2. As shown in FIG.

The relay core 4 is made of, for example, an acrylic resin or the like, and extends in the axial direction so as to pass through the cylindrical hole of the bellows member 5 . is installed. The rear end portion of the relay core 4 enters the housing portion 2 and the tip portion thereof enters the writing brush 3 , thereby connecting the housing portion 2 and the writing brush 3 . The relay core 4 makes it possible to suck up the water-based liquid cosmetic L in the storage section 2 and supply it to the writing brush 3 by capillarity.

In the liquid cosmetic container 100 shown in FIG. 1, the applicator is a brush, but it may be changed to a felt tip or a urethane tip.

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

In the liquid cosmetic container 100, the container 2 contains the water-based liquid cosmetic L together with an axially movable stirrer 20 and an axially expandable coil spring 21. As shown in FIG. Here, the stirrer 20 is particularly preferably a sphere, but may be a polyhedron, cone, or the like.

The coil spring 21 is an integrally formed spring in which a plurality of spring portions with different diameters (here, two spring portions with different diameters) are integrally connected in the axial direction. . This coil spring 21 has a small-diameter spring portion smaller in diameter than the stirrer 20 in the rear half, and a large-diameter spring portion larger in diameter than the stirrer 20 is connected to the front of the small-diameter spring portion in the axial direction. be prepared.

Here, when the user shakes the container 100, the stirrer 20 is movable in the axial direction within the large-diameter spring portion that constitutes the coil spring 21, so that the stirrer 20 moves in the axial direction, and the stirring is performed. The water-based liquid cosmetic L is agitated by the movement of the child 20 .

In the liquid cosmetic container 100 configured as described above, the water-based liquid cosmetic L in the storage portion 2 flows out toward the writing brush 3 on the tip side via the relay core 4, and the user touches the writing brush 3. for application by In addition, in the liquid cosmetic container 100 according to the present embodiment, the stirrer 10 and the coil spring 21 described above enable the water-based liquid cosmetic L to flow out to the writing brush 3 efficiently. A configuration without the coil spring 21 may be used.

As described above, the liquid cosmetic container 100 having a so-called direct-liquid structure has been described as an autopen-type container that can use the water-based liquid cosmetic according to the present embodiment. It is not limited, and a known one can be used. For example, the bellows member 5, the stirrer 20, and the coil spring 21 of the liquid cosmetic container 100 are omitted, and the accommodation portion 2 accommodates a cotton member impregnated with the water-based liquid cosmetic L, and the rear end portion is made of the cotton member. A container having a so-called batting structure may be used, in which the water-based liquid cosmetic L is supplied to the brush 3 by a relay core 4 inserted therein.

EXAMPLES The present invention will be described in more detail with reference to examples below, but the present invention is not limited to the following examples.

<Production of water-based liquid cosmetics>
(Examples 1 to 29, Comparative Examples 1 to 3)
Each component shown in Tables 1 to 6 was mixed with a disper in the ratio (% by mass) shown in the same table to obtain a water-based liquid cosmetic. The value of the polymer emulsion in the table is the blending amount of each emulsion. For aminomethylpropanol, the blending amount in a 50% aqueous solution is shown.

For each component shown in Tables 1 to 4, those shown below were used.
Glittering powder *1: Polyethylene terephthalate/aluminum/epoxy laminated powder (made of Kakupachi fish scale foil, product name “Aluminum flake silver 0.15 mm”)
Alkyl acrylate copolymer * 1: Acrylates copolymer (manufactured by BASF, product name “Luvimer 100P”
Polymer emulsion-1: Alkyl acrylate copolymer emulsion (manufactured by Daito Kasei Kogyo Co., Ltd., product name “Daitosol 5000SJ”, solid content concentration 50% by mass)
Polymer emulsion-2: Alkyl acrylate/styrene copolymer emulsion (manufactured by Akzo Nobel, product name “Yodosol GH41F”, solid content concentration 45% by mass)
Polymer emulsion-3: (manufactured by Daito Kasei Kogyo Co., Ltd., product name “Vinisol 2140L”, solid content concentration 47.5% by mass)

<Viscosity of water-based liquid cosmetic>
The viscosity of the sample at 25° C. was measured using a Brookfield viscometer (BM type) under the following conditions. The measurement time was 1 minute.
5 to 50 mPa・s: BL adapter, rotation speed 12 rpm
50 to 500 mPa s: Rotor No. 1, 12 rpm
250 to 2500 mPa s: Rotor No. 2, 12 rpm
1000 to 10000 mPa s: Rotor No. 3, rotation speed 12 rpm
5000 to 50000 mPa s: Rotor No. 4, 12 rpm

<Evaluation 1 of water-based liquid cosmetics>
(Dispersibility of glitter powder (difficulty in sedimentation))
A sample was placed in a glass tube and allowed to stand in an environment of 25°C for 1 day. evaluated.
[Evaluation criteria]
⊚: Glittering powder can be visually confirmed in the entire liquid.
○: Glittering powder can be visually confirmed up to the middle part of the liquid.
Δ: Glittering powder can be visually confirmed at the bottom of the liquid.
x: Glittering powder can be visually confirmed only at the bottom of the liquid.

(Redispersibility of glitter powder)
A sample was placed in a glass tube, left in a 25° C. environment for 1 week, then shaken by hand for 10 seconds, and redispersibility was visually confirmed.
⊚: Immediately after shaking, all lumps of glittering powder were broken up at the bottom, and glittering powder could be visually confirmed on the whole.
◯: When shaken for 10 seconds, all lumps of glittering powder at the bottom are loosened, and glittering powder can be visually confirmed as a whole.
Δ: The lumps of the glittering powder at the bottom are slightly loosened, but the lumps are not completely eliminated.
x: The bright powder clumps at the bottom did not break apart at all, and there was no change from before shaking.

<Evaluation 2 of water-based liquid cosmetics>
The water-based liquid cosmetic obtained above is filled into the container of an auto-pen type liquid eyeliner container (applicator: writing brush, relay core: acrylic resin) having the same structure as the container shown in FIG. made a product.

The produced filled product (immediately after filling and after storage test (left at 25° C. environment for 1 week)) was evaluated for pearliness and jettability by the following evaluation methods.

<Evaluation of pearl feeling>
Using the filling product, three lines each having a width of 2 mm and a length of 4 cm were applied to the back of the hand.
[Evaluation criteria]
(double-circle): The same pearl feeling as the bulk before filling can be visually confirmed.
◯: Slightly inferior to the bulk before filling, but sufficient pearl feeling can be confirmed visually.
Δ: The pearl feeling is considerably inferior to that of the bulk before filling.
x: There is almost no pearl feeling compared with the bulk before filling.

<Evaluation of dischargeability>
Using the filling product, three lines each having a width of 2 mm and a length of 4 cm were applied to the back of the hand.
[Evaluation criteria]
⊚: Sufficient amount of liquid is discharged, and drawn lines are uniform.
◯: The amount of liquid discharged is satisfactory, and drawn lines are substantially uniform.
Δ: The amount of liquid ejected is rather small, and drawn lines are slightly uneven.
x: The amount of liquid ejected is small, and drawn lines are blurred.

(Example 30: eyeliner)
(Component) (Composition ratio (% by mass))
1. Purified water Balance 2. Sodium polyaspartate 1.00
3. Synthetic smectite 0.10
4. Metal-coated glass powder 4.00
5. PvP 2.00
6. Bengara 1.50
7. Conjo 3.50
8. Carbon black 3.50
9. Polyoxyethylene alkyl ether 1.00
10. Polyoxyethylene glycerin fatty acid ester 1.00
11. Aminomethylpropanol 0.10
12.1,3-butylene glycol 2.00
13. Dipropylene glycol 6.00
14. Phenoxyethanol 0.50
15. EDTA-2Na 0.05
16. The above polymer emulsion-1 10.00

<Manufacturing method>
A water-based liquid cosmetic was obtained by dissolving components 1 to 16 and uniformly stirring and mixing them. An auto-pen type cosmetic container similar to that shown in FIG. 1 was filled with this to prepare an auto-pen type eyeliner.

<Evaluation>
When the obtained eyeliner was evaluated in the same manner as above, the viscosity was 9 mPa. s, dispersibility of glittering powder is "○", redispersibility of glittering powder is "◯", pearl feeling is "◎" both immediately after filling and after storage test, ejection property is immediately after filling and after storage test. Both were "◎".

(Example 31: eyeliner)
(Component) (Composition ratio (% by mass))
1. Purified water Balance 2. Sodium polyaspartate 2.00
3. Synthetic smectite 0.10
4. Aluminum powder 4.00
5. PvP 2.00
6. Bengara 5.00
7. Carbon black 3.50
8. Polyoxyethylene alkyl ether 1.00
9. Polyoxyethylene glycerin fatty acid ester 1.00
10. Aminomethylpropanol 0.10
11. Dipropylene glycol 6.00
12. Phenoxyethanol 0.50
13. EDTA-2Na 0.05
14. The above polymer emulsion-1 10.00

<Manufacturing method>
A water-based liquid cosmetic was obtained by dissolving components 1 to 14 and uniformly stirring and mixing them. An auto-pen type cosmetic container similar to that shown in FIG. 1 was filled with this to prepare an auto-pen type eyeliner.

<Evaluation>
When the obtained eyeliner was evaluated in the same manner as above, the viscosity was 14 mPa.s. s Glittering powder dispersibility is "◎", glittering powder redispersibility is "◎", pearl feeling is "◎" both immediately after filling and after storage test, jettability is both immediately after filling and after storage test. It was "◎".

(Example 32: Eyeliner)
(Component) (Composition ratio (% by mass))
1. Purified water Balance 2. Sodium polyaspartate 1.00
3. Synthetic smectite 0.10
4. Aluminum powder 5.00
5. PvP 2.00
6. Bengara 6.00
7. Carbon black 1.50
8. Polyoxyethylene alkyl ether 1.00
9. Polyoxyethylene glycerin fatty acid ester 1.50
10. Potassium hydroxide 0.10
11.1,3-butylene glycol 8.00
12. Phenoxyethanol 0.50
13. EDTA-2Na 0.05
14. Xanthan gum 0.40
15. The above polymer emulsion-1 15.00

<Manufacturing method>
A water-based liquid cosmetic was obtained by dissolving components 1 to 15 and uniformly stirring and mixing. This was filled into a cosmetic container to prepare a bottle-type eyeliner.

<Evaluation>
When the obtained eyeliner was evaluated in the same manner as above, the viscosity was 4000 mPa.s. s Glittering powder dispersibility is "◎", glittering powder redispersibility is "◎", pearl feeling is "◎" both immediately after filling and after storage test, applicability is both immediately after filling and after storage test It was "◎".

DESCRIPTION OF SYMBOLS 1... Container body, 2... Accommodating part, 3... Writing brush (application body), 20... Stirrer, 21... Coil spring (small-diameter spring part and large-diameter spring part), 100... Liquid cosmetic container, L... Water-based liquid cosmetic .

Claims (12)

(A) sodium polyaspartate, (B) at least one glittering powder selected from the following groups B1 and B2, (C) a water-soluble dispersant, and (D) selected from the following groups D1 and D2 containing at least one metal oxide
The contents of the component (A), the component (B), the component (C) and the component (D) are respectively 0.3 to 5% by mass and 0.5 to 10% by mass based on the total amount of the cosmetic. , 0.5 to 5 mass% and 0.5 to 10 mass% , water-based liquid cosmetics.
B1 group: metal or metal oxide-coated glass powder, aluminum powder B2 group: metal-coated resin film powder D1 group: yellow iron oxide, red iron oxide, black iron oxide, titanium dioxide, titanium oxynitride D2 group: Prussian blue (A) sodium polyaspartate, (B) at least one glittering powder selected from the following groups B1 and B2, (C) a water-soluble dispersant, and (D) selected from the following groups D1 and D2 containing at least one metal oxide
With respect to the content of 100 parts by mass of the component (B),
The content of the component (A) is 10 to 200 parts by mass,
The content of the component (C) is 20 to 400 parts by mass,
A water-based liquid cosmetic in which the content of component (D) is 12.5 to 1000 parts by mass.
B1 group: metal or metal oxide-coated glass powder, aluminum powder
B2 group: metal-coated resin film powder
D1 group: yellow iron oxide, red iron oxide, black iron oxide, titanium dioxide, titanium oxynitride
D2 group: Prussian blue (A) sodium polyaspartate, (B) at least one glittering powder selected from the following groups B1 and B2, (C) a water-soluble dispersant, and (D) selected from the following groups D1 and D2 containing at least one metal oxide
The component (B) contains (B1) at least one glittering powder selected from the following B1 group,
A water-based liquid in which the component (D) contains 12.5 to 1000 parts by mass of (D1) at least one metal oxide selected from the following group D1 with respect to a total of 100 parts by mass of the component (B1) cosmetics.
B1 group: metal or metal oxide-coated glass powder, aluminum powder
B2 group: metal-coated resin film powder
D1 group: yellow iron oxide, red iron oxide, black iron oxide, titanium dioxide, titanium oxynitride
D2 group: Prussian blue (A) sodium polyaspartate, (B) at least one glittering powder selected from the following groups B1 and B2, (C) a water-soluble dispersant, and (D) selected from the following groups D1 and D2 containing at least one metal oxide
The component (B) contains (B2) a glittering powder selected from the following B2 group,
A water-based liquid cosmetic, wherein the component (D) contains 100 to 600 parts by mass of (D2) a metal oxide selected from Group D2 below with respect to a total of 100 parts by mass of the component (B2).
B1 group: metal or metal oxide-coated glass powder, aluminum powder
B2 group: metal-coated resin film powder
D1 group: yellow iron oxide, red iron oxide, black iron oxide, titanium dioxide, titanium oxynitride
D2 group: Prussian blue (A) sodium polyaspartate, (B) at least one glittering powder selected from the following groups B1 and B2, (C) a water-soluble dispersant, and (D) selected from the following groups D1 and D2 containing at least one metal oxide
A water-based liquid cosmetic having a viscosity of 50 mPa·s or less at 25°C.
B1 group: metal or metal oxide-coated glass powder, aluminum powder
B2 group: metal-coated resin film powder
D1 group: yellow iron oxide, red iron oxide, black iron oxide, titanium dioxide, titanium oxynitride
D2 group: Prussian blue With respect to the content of 100 parts by mass of the component (B),
The content of the component (A) is 10 to 200 parts by mass,
The content of the component (C) is 20 to 400 parts by mass,
The content of the component (D) is 12.5 to 1000 parts by mass,
The water-based liquid cosmetic according to claim 1 . The component (B) contains (B1) at least one glittering powder selected from the B1 group,
wherein the component (D) contains 12.5 to 1000 parts by mass of (D1) at least one metal oxide selected from the group D1 with respect to a total of 100 parts by mass of the component (B1) 7. The water-based liquid cosmetic according to any one of 1, 2, or 6 . The component (B) contains (B2) a glitter powder selected from the B2 group,
Claims 1 to 3, 6, wherein the component (D) contains 100 to 600 parts by mass of (D2) a metal oxide selected from the group D2 with respect to a total of 100 parts by mass of the component (B2). Or the water-based liquid cosmetic according to any one of 7 . The water-based liquid cosmetic according to any one of claims 1 to 4 and 6 to 8 , which has a viscosity of 50 mPa·s or less at 25°C. 10. Any one of claims 1 to 9 , wherein the component (C) comprises at least one water-soluble polymer selected from the group consisting of polyvinylpyrrolidone, polyvinyl alcohol, vinylpyrrolidone/vinyl acetate copolymer and acrylic acid polymer. 10. A water-based liquid cosmetic according to the item . The water-based liquid cosmetic according to any one of claims 1 to 10, which is used by being housed in an auto-pen type container. a storage section for storing a water-based liquid cosmetic; an application section for applying the water-based liquid cosmetic; an auto-pen type container having a relay core for supplying to the application part;
The water-based liquid cosmetic according to any one of claims 1 to 10 accommodated in the accommodation portion;
Cosmetics.

Images