Water-based liquid cosmetic

Abstract

To provide a water-based liquid cosmetic that retains excellent liquid flowability, cap-off non-dryness, adhesion, sebum resistance, and water-sebum resistance, while delivering excellent coloration even after long periods of disuse.SOLUTION: A water-based liquid cosmetic according to the present invention is housed in a pen-type applicator and contains a titanium oxide pigment, a polyorganic acid or a polyorganic acid salt, emulsion particles containing an acrylates copolymer, and a water-based solvent. The ratio of the mass of the titanium oxide pigment to the mass of the polyorganic acid or the polyorganic acid salt is more than 5.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an aqueous liquid cosmetic preparation. [Background technology]

[0002] Conventionally, inorganic pigments have been used as coloring materials in makeup cosmetics such as eye shadow, eye liner, eyebrow, mascara, etc. Studies have been conducted on issues such as suppressing aggregation and sedimentation of inorganic pigments in cosmetics and improving the density of drawn lines.

[0003] Patent Document 1 discloses an aqueous liquid cosmetic containing sodium diethylhexyl sulfosuccinate, an inorganic color pigment, a water-soluble dispersant, and a film-forming polymer emulsion. In this aqueous liquid cosmetic, the content of sodium diethylhexyl sulfosuccinate is 0.01 to 1 mass% based on the total mass of the cosmetic, and the content of the inorganic color pigment is 3 to 20 mass% based on the total mass of the cosmetic, and the inorganic color pigment contains carbon black.

[0004] Patent Document 2 discloses a water-based liquid cosmetic composition containing sodium polyaspartate, at least one glittering powder, a water-soluble dispersant, and at least one given metal oxide. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2020-70259 A [Patent Document 2] JP 2020-132619 A Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention provides an aqueous liquid cosmetic which can provide good color development even after being left for a long period of time while maintaining good liquid outflow, cap-off non-drying properties, adhesion properties, sebum resistance, and water-and-sebum resistance. [Means for solving the problem]

[0007] As a result of intensive research, the present inventors have found that the above problems can be solved by the following means, and have completed the present invention. That is, the present invention is as follows: Aspect 1: A cosmetic material contained in a pen-type applicator, The emulsion particles contain a titanium oxide pigment, a polyorganic acid or a polyorganic acid salt, an acrylates copolymer, and a water-based solvent; the ratio of the mass of the titanium oxide pigment to the mass of the polyorganic acid or polyorganic acid salt is greater than 5; Water-based liquid cosmetics. Aspect 2: The aqueous liquid cosmetic according to aspect 1, wherein the content of the titanium oxide pigment is 10% by mass or more based on the total mass of the aqueous liquid cosmetic. Aspect 3: The aqueous liquid cosmetic preparation according to aspect 1 or 2, wherein the polyorganic acid or the polyorganic acid salt is at least one selected from the group consisting of polyaspartic acid, polylactic acid, polyphosphoric acid, and polyacrylic acid, or a salt thereof. <Aspect 4> The aqueous liquid cosmetic preparation according to any one of Aspects 1 to 3, wherein the emulsion particles containing the acrylates copolymer are core-shell type emulsion particles. Aspect 5: The aqueous liquid cosmetic preparation according to any one of Aspects 1 to 4, wherein the aqueous solvent contains water and at least one alcohol selected from the group consisting of lower alcohols having 5 or less carbon atoms and polyhydric alcohols having 10 or less carbon atoms. Aspect 6: The aqueous liquid cosmetic preparation according to any one of Aspects 1 to 5, further comprising a pigment other than the titanium oxide pigment. Aspect 7: The aqueous liquid cosmetic preparation according to Aspect 6, wherein the content of the titanium oxide pigment is 45% by mass or more, based on the total mass of the titanium oxide pigment and pigments other than the titanium oxide pigment. <Aspect 8> A pen-type applicator containing the aqueous liquid cosmetic preparation according to any one of aspects 1 to 7. Effect of the Invention

[0008] According to the present invention, it is possible to provide an aqueous liquid cosmetic preparation which can provide good color development even after being left to stand for a long period of time, while maintaining good liquid outflow properties, cap-off non-drying properties, adhesion properties, sebum resistance, and water-and-sebum resistance. [Brief description of the drawings]

[0009] [Figure 1] This figure is a partial cross-sectional view showing a first embodiment of a liquid cosmetic applicator that contains an aqueous liquid cosmetic of the present invention. The mechanism in Figure 1 is an example of a rotary dispenser type. [Diagram 2] This figure is a partial cross-sectional view showing a second embodiment of a liquid cosmetic applicator that contains an aqueous liquid cosmetic of the present invention. The mechanism in Figure 2 is an example of a built-in cosmetic applicator type. [Diagram 3] (a) is a perspective view showing a third embodiment of a liquid cosmetic applicator that contains an aqueous liquid cosmetic of the present invention, and (b) is a partial cross-sectional view of the same liquid cosmetic applicator as (a). The mechanism of the liquid cosmetic applicators in (a) and (b) is an example of a collector-type applicator. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] <Water-based liquid cosmetics> The aqueous liquid cosmetic composition of the present invention comprises: A cosmetic material contained in a pen-type applicator, The emulsion particles contain a titanium oxide pigment, a polyorganic acid or a polyorganic acid salt, an acrylates copolymer, and a water-based solvent; The ratio of the mass of the titanium oxide pigment to the mass of the polyorganic acid or polyorganic acid salt is greater than 5.

[0011] In conventional aqueous liquid cosmetics containing titanium dioxide pigment, the titanium dioxide pigment is generally used in a relatively small amount because it is prone to settling and aggregation, and if a large amount is used, it is necessary to increase the viscosity to a level that is unsuitable for use as a liquid cosmetic.

[0012] In contrast, the present inventors have found that by containing a small amount of polyorganic acid or polyorganic acid salt relative to the titanium oxide pigment in the aqueous liquid cosmetic of the present invention, i.e., by making the ratio of the mass of the titanium oxide pigment to the mass of the polyorganic acid or polyorganic acid salt greater than 5, it is possible to easily redisperse the titanium oxide pigment in an applicator, for example by the stirring element of the applicator, while maintaining good liquid outflow properties, and therefore it is possible to suppress settling and aggregation of the titanium oxide pigment in the aqueous liquid cosmetic (after dispersion).As a result, it is possible to obtain an aqueous liquid cosmetic that is suitable for applicators such as eyeliners that have a brush-shaped applicator part.

[0013] From the viewpoint of improving the viscosity of the aqueous liquid cosmetic, the ratio of the mass of the titanium dioxide pigment to the mass of the polyorganic acid or polyorganic acid salt is preferably more than 5.0, 5.5 or more, 6.0 or more, 6.5 or more, 7.0 or more, 7.5 or more, 8.0 or more, 8.5 or more, or 9.0 or more. From the viewpoint of improving the dispersion stability of the titanium dioxide pigment, this ratio is preferably 100.0 or less, 90.0 or less, 80.0 or less, 70.0 or less, 60.0 or less, 50.0 or less, 45.0 or less, 40.0 or less, 35.0 or less, 30.0 or less, 25.0 or less, 20.0 or less, 15.0 or less, 14.0 or less, 13.5 or less, or 13.0 or less.

[0014] The aqueous liquid cosmetic of the present invention may or may not contain an optional nonionic surfactant. When the aqueous liquid cosmetic of the present invention does not contain a nonionic surfactant, the color development and cap-off non-drying properties tend to be good.

[0015] The aqueous liquid cosmetic of the present invention may contain other optional components. Examples of other components that can be used include preservatives, antioxidants, neutralizing agents, ultraviolet absorbers, chelating agents, pH adjusters, moisturizing agents, cosmetic ingredients, fragrances, viscosity / viscosity adjusters, other dispersants such as polyethylene glycol alkyl ethers, other coloring materials such as water-soluble dyes and resin particle pigments. The content of other components may be appropriately determined within a range that does not impair the effects of the present invention.

[0016] From the viewpoint of improving the outflow of the aqueous liquid cosmetic composition of the present invention, it is preferable that the viscosity of the aqueous liquid cosmetic composition of the present invention is 15 mPa s or less, 12 mPa s or less, 10 mPa s or less, 9 mPa s or less, 8 mPa s or less, or 7 mPa s or less. This viscosity may be 2 mPa s or more, 3 mPa s or more, or 4 mPa s or more.

[0017] The viscosity range can be adjusted by adjusting the average particle size of the pigment used, the type and content of each component, and the dispersion method.

[0018] In the present invention, the viscosity is measured at a shear rate of 50 rpm (shear rate: 192 [s -1 The viscosity was measured under the condition of 25° C. The viscosity can be measured, for example, by using an ELD type viscometer (manufactured by Toki Sangyo Co., Ltd.).

[0019] In addition, from the viewpoints of improving solubility and suppressing skin irritation, the aqueous liquid cosmetic preparation of the present invention preferably has a pH, measured at 25° C. using a glass electrode, in the range of 6 to 9. The pH can be adjusted using the above-mentioned pH adjusters, etc.

[0020] The aqueous liquid cosmetic preparation of the present invention can be prepared by dispersing a titanium oxide pigment, a polyorganic acid or a polyorganic acid salt, emulsion particles containing an acrylates copolymer, an aqueous solvent, and optionally other components under known dispersion conditions.

[0021] As the dispersion means, for example, a dispersing machine such as a homomixer, a sand mill, an ultrasonic homogenizer, or a high-pressure homogenizer can be used. In particular, by using these dispersion means, the average particle size of the titanium oxide pigment in the cosmetic (after dispersion) can be adjusted to 300 nm or less. Here, in the present invention, the "average particle size" means the value of the histogram average particle size (D50) calculated on a volume basis in the scattering intensity distribution measured by the dynamic light scattering method.

[0022] For example, when an ultrasonic homogenizer is used as the dispersing machine, a dispersion condition of a frequency of 20 to 30 KHz may be adopted. When a high-pressure homogenizer is used as the dispersing machine, a dispersion condition of a pressure of 150 to 245 MPa may be adopted. By using these dispersion conditions, the average particle size of the titanium oxide pigment in the cosmetic (after dispersion) can be adjusted to 300 nm or less.

[0023] The aqueous liquid cosmetic composition of the present invention can be used as a cosmetic composition for eye shadow, eyeliner, eyebrow, mascara, etc.

[0024] Each of the components of the aqueous liquid cosmetic composition of the present invention will be described below.

[0025] Titanium oxide pigment As the titanium oxide pigment, not only pigments containing titanium oxide as a majority, but also pigments whose surface is coated with titanium oxide and pigments whose surface is coated with resin or coloring materials other than titanium oxide and whose base particles are titanium oxide can be used.

[0026] Examples of such titanium oxide pigments include commercially available titanium oxide pigments, as well as titanium black, titanium mica, titanium dioxide-coated mica, titanium dioxide-coated synthetic phlogopite, titanium dioxide-coated bismuth oxychloride, iron oxide-coated mica titanium, Prussian blue-treated mica titanium, carmine-treated mica titanium, and titanium dioxide-coated glass powder. These titanium oxide pigments may be used alone or in combination.

[0027] The titanium dioxide pigment content is preferably 1% by mass or more, 2% by mass or more, 3% by mass or more, 4% by mass or more, 5% by mass or more, 6% by mass or more, 7% by mass or more, 8% by mass or more, 9% by mass or more, 10% by mass or more, 11% by mass or more, 12% by mass or more, 13% by mass or more, 14% by mass or more, 15% by mass or more, 16% by mass or more, or 17% by mass or more, based on the mass of the aqueous liquid cosmetic, from the viewpoint of improving color development and hiding power. This content is preferably 25% by mass or less, 24% by mass or less, 23% by mass or less, 22% by mass or less, 21% by mass or less, or 20% by mass or less, from the viewpoint of not excessively increasing the viscosity of the aqueous liquid cosmetic and obtaining good application properties.

[0028] In addition, when the aqueous liquid cosmetic of the present invention contains a pigment other than the titanium oxide pigment, the content of the titanium oxide pigment may be 5% by mass or more, 10% by mass or more, 15% by mass or more, 20% by mass or more, 25% by mass or more, 30% by mass or more, 35% by mass or more, 40% by mass or more, 45% by mass or more, 48% by mass or more, 50% by mass or more, 55% by mass or more, 60% by mass or more, 65% by mass or more, 70% by mass or more, 75% by mass or more, 80% by mass or more, or 85% by mass or more, based on the total mass of the titanium oxide pigment and the pigment other than the titanium oxide pigment. This content may be less than 100% by mass, 99% by mass or less, 98% by mass or less, 97% by mass or less, or 96% by mass or less.

[0029] The average particle size of the titanium oxide before dispersion may be, for example, 100 nm or more, 150 nm or more, 200 nm or more, 220 nm or more, 250 nm or more, or 270 nm or more, and may be 500 nm or less, 450 nm or less, 420 nm or less, 400 nm or less, 370 nm or less, 350 nm or less, or 320 nm or less.

[0030] <Polyorganic acid or polyorganic acid salt> By using a polyorganic acid or a polyorganic acid salt, the dispersibility of the titanium oxide pigment serving as a coloring material can be improved.

[0031] As the polyorganic acid, for example, at least one selected from the group consisting of polyaspartic acid, polylactic acid, polyphosphoric acid, polyacrylic acid, and polyglutamic acid can be used.

[0032] As the polyorganic acid salt, for example, at least one selected from the group consisting of the above-mentioned polyorganic acids, i.e., polyaspartic acid, polylactic acid, polyphosphoric acid, polyacrylic acid, and polyglutamic acid salts can be used. As the type of these salts, alkali metal salts, alkaline earth metal salts, ammonium salts, alkanolamine salts, etc. can be used, and among them, sodium salts, potassium salts, and lithium salts are particularly preferred.

[0033] Among these polyorganic acids or polyorganic acid salts, polyaspartic acid or a salt thereof can provide good dispersion stability for the titanium oxide pigment, and sodium polyaspartate is particularly preferred.

[0034] The (total) content of these polyorganic acids and polyorganic acid salts may be, relative to the mass of the aqueous liquid cosmetic, 0.2% by mass or more, 0.4% by mass or more, 0.6% by mass or more, 0.8% by mass or more, 1.0% by mass or more, and / or 4.0% by mass or less, 3.8% by mass or less, 3.6% by mass or less, 3.4% by mass or less, 3.2% by mass or less, 3.0% by mass or less, 2.8% by mass or less, 2.6% by mass or less, 2.4% by mass or less, 2.2% by mass or less, or 2.0% by mass or less.

[0035] In addition, the (total) mass of these polyorganic acids and polyorganic acid salts is preferably 2 parts by mass or more, 3 parts by mass or more, 4 parts by mass or more, 5 parts by mass or more, 6 parts by mass or more, 7 parts by mass or more, or 8 parts by mass or more relative to 100 parts by mass of the pigment, from the viewpoint of improving the dispersion stability of the pigment, particularly the titanium oxide pigment. It is preferable that this (total) mass be 20 parts by mass or less, 18 parts by mass or less, 15 parts by mass or less, 13 parts by mass or less, 12 parts by mass or less, or 11 parts by mass or less, from the viewpoint of giving the aqueous liquid cosmetic a good viscosity range and from the viewpoint of suppressing pigment sedimentation when the aqueous liquid cosmetic is contained in a pen-type applicator having a brush tip-shaped or pen core-shaped applicator.

[0036] <Emulsion particles> The emulsion particles used in the present invention are emulsion particles containing an acrylate copolymer. Such emulsion particles are also known as film-forming polymer emulsion particles.

[0037] Such emulsion particles include emulsions of water-insoluble polymers, such as styrene-alkyl acrylate copolymer emulsions, styrene-alkyl methacrylate copolymer emulsions, acrylic acid, methacrylic acid, or their (C 1 ~C 4 and C 8 ) A copolymer emulsion made of an alkyl ester component, etc. can be used.

[0038] Furthermore, as such emulsion particles, emulsion particles of a composite polymer such as a core-shell type polymer emulsion consisting of a copolymer of an ethylenically unsaturated carboxylic acid monomer and a styrene monomer and another polymer and / or copolymer may be used.

[0039] The styrene-alkyl acrylate copolymer emulsion may be a styrene / acrylates copolymer, such as Yodosol GH41F (Nouryon Japan) or Daitosol 5000STY (Daito Kasei Kogyo Co., Ltd.) available as a commercially available product of this polymer.

[0040] A specific example of an emulsion of a core-shell type polymer emulsion consisting of a copolymer of an ethylenically unsaturated carboxylic acid monomer and a styrene monomer and other polymers and / or copolymers is Emapoly CE-119N (Gifu Ceramics Co., Ltd.), which is an emulsion of a core-shell type copolymer of ethylhexyl acrylate / methacrylic acid copolymer [(acrylates / methylstyrene / styrene) ammonium copolymer].

[0041] From the viewpoint of film-forming properties and line adhesion, those containing acrylate copolymers are preferred, and among these, the above-mentioned core-shell type polymer emulsions are even more preferred.

[0042] These emulsion particles are usually finely dispersed resins in the aqueous component at a concentration of 20 to 60% by mass as solids. The content, in terms of solids, is preferably 1% by mass or more, 2% by mass or more, 3% by mass or more, 4% by mass or more, or 5% by mass or more relative to the mass of the aqueous liquid cosmetic, from the viewpoint of improving adhesion and water-resistant adhesion. This content is preferably 30% by mass or less, 25% by mass or less, 20% by mass or less, 15% by mass or less, 12% by mass or less, 10% by mass or less, 9% by mass or less, 8% by mass or less, or 7% by mass or less, from the viewpoint of not excessively increasing the viscosity of the aqueous liquid cosmetic, thereby improving the applicability.

[0043] <Water-based solvent> The aqueous solvent used in the present invention is a solvent containing water as a main component, that is, at a content of 50% by mass or more, 60% by mass or more, 65% by mass or more, 70% by mass or more, 75% by mass or more, 80% by mass or more, or 82% by mass or more, based on the mass of the aqueous solvent. The aqueous solvent may be composed of only water, or may further contain an organic solvent. When the aqueous solvent contains an organic solvent, the water content in the aqueous solvent may be less than 100% by mass, 99% by mass or less, 95% by mass or less, 90% by mass or less, or 87% by mass or less, based on the mass of the aqueous solvent. The above water content can improve the stability over time and the dispersibility of the titanium oxide pigment.

[0044] In particular, the aqueous solvent used in the present invention may contain water and at least one alcohol selected from the group consisting of lower alcohols having 10 or less carbon atoms and polyhydric alcohols having 10 or less carbon atoms.

[0045] As the water, distilled water, ion-exchanged water, purified water, pure water, ultrapure water, etc. can be used.

[0046] Specific examples of lower alcohols having 5 or less carbon atoms include at least one of methyl alcohol (methanol), ethyl alcohol (ethanol), n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-butyl alcohol, tert-butyl alcohol, isobutyl alcohol, pentyl alcohol, ethylene glycol, and propylene glycol.

[0047] Furthermore, examples of polyhydric alcohols having 10 or less carbon atoms that can be used include glycerin, erythritol, threitol, arabinitol, xylitol, ribitol, maltitol, lactitol, mannitol, propylene glycol, 1,3-butylene glycol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, ethylene glycol, diethylene glycol, dipropylene glycol, pentaerythritol, and ethylhexylglycerin.

[0048] Among these, it is preferable to use 1,3-butylene glycol from the viewpoints of safety, ease of handling, and the like.

[0049] The total content of the aqueous solvents used is preferably 45% by mass or more, 50% by mass or more, 55% by mass or more, 60% by mass or more, or 63% by mass, based on the mass of the aqueous liquid cosmetic, from the viewpoints of smooth application and moisturizing properties, and of exerting a slight antiseptic effect. This total content is preferably 85% by mass or less, 80% by mass or less, or 77% by mass or less, from the viewpoints of improving the dispersion stability of the titanium dioxide pigment, particularly stability at low temperatures.

[0050] <Pigments other than titanium dioxide pigments> As the pigment other than the titanium oxide pigment, inorganic pigments such as inorganic color pigments, inorganic extender pigments, and inorganic luster pigments, as well as organic pigments, etc. These pigments may be used alone or in combination.

[0051] Examples of inorganic coloring pigments that can be used include carbon black, iron oxide, titanium black, zinc oxide, talc, chromium oxide, cobalt oxide, zinc oxide, titanium mica, bismuth oxychloride, ultramarine, and konjo.

[0052] Examples of inorganic body pigments that can be used include talc, muscovite, phlogopite, red mica, biotite, synthetic mica, sericite, synthetic sericite, kaolin, silicon carbide, smectite, aluminum oxide, magnesium oxide, zirconium oxide, antimony oxide, diatomaceous earth, aluminum silicate, aluminum magnesium metasilicate, calcium silicate, barium silicate, magnesium silicate, calcium carbonate, magnesium carbonate, hydroxyapatite, boron nitride, and silicon dioxide.

[0053] As the inorganic bright pigment, iron oxide-coated mica, bismuth oxychloride, fish scale foil, aluminum powder, etc. can be used.

[0054] As the organic pigment, for example, Red No. 202, Red No. 220, Red No. 226, Red No. 228, Yellow No. 401, Yellow No. 205, Yellow No. 4 Al Lake, Yellow No. 203 Al Lake, Red No. 104 Al Lake, etc. can be used.

[0055] In particular, the above-mentioned inorganic color pigments and organic pigments can be used as coloring materials, and when carbon black is used, it can be combined with the above-mentioned titanium oxide pigment to produce a gray color. In addition, commercially available pigment mixtures containing carbon black can also be used without any particular limitation as long as they are used in liquid cosmetics.

[0056] The average particle size of these pigments before dispersion may be, for example, 20,000 nm or less, 15,000 nm or less, 10,000 nm or less, 8,000 nm or less, 5,000 nm or less, 3,000 nm or less, 2,000 nm or less, 1,800 nm or less, 1,500 nm or less, 1,300 nm or less, 1,200 nm or less, 1,100 nm or less, 1,000 nm or less, 900 nm or less, or 800 nm or less, and may be 100 nm or more, 200 nm or more, 300 nm or more, 400 nm or more, 500 nm or more, or 600 nm or more.

[0057] The content of these pigments other than titanium oxide pigments may be 0% by mass or more, or 1% by mass or more, and may be 18% by mass or less, 15% by mass or less, 12% by mass or less, 10% by mass or less, or 9% by mass or less, relative to the mass of the aqueous liquid cosmetic.

[0058] <Nonionic surfactant> As the nonionic surfactant, for example, polyoxyethylene (POE) and an organic acid, glycerin, higher alcohol, etc. can be used by ether bonding. Among them, it is preferable to use polyoxyethylene (POE) alkyl ethers such as laureths (polyoxyethylene lauryl ethers), ceteths (polyoxyethylene cetyl ethers), steareths (polyoxyethylene stearyl ethers), and beheneths (polyoxyethylene behenyl ethers). These nonionic surfactants may be used alone or in combination.

[0059] Among these, from the viewpoints of their molecular structure and hydrophilicity, it is preferable to use POE(20) cetyl ether (ceteth-20), POE(30) behenyl ether (beheneth-30), POE(20) stearyl ether, and POE(10) oleyl ether.

[0060] From the standpoint of suppressing excessive penetration into the skin (so-called spidering) and from the standpoint of dispersion stability of the titanium oxide pigment, the content of the nonionic surfactant used is preferably 0.01% by mass or more, 0.03% by mass or more, 0.05% by mass or more, 0.07% by mass or more, or 0.09% by mass or more, and 1.00% by mass or less, 0.90% by mass or less, 0.80% by mass or less, 0.70% by mass or less, 0.60% by mass or less, 0.50% by mass or less, 0.40% by mass or less, 0.35% by mass or less, or 0.30% by mass or less, relative to the mass of the aqueous liquid cosmetic.

[0061] <Applicator> The applicator of the present invention is a pen-type applicator that contains the above-mentioned water-based liquid cosmetic preparation.

[0062] In particular, the applicator of the present invention may have a front barrel having an application portion, and a barrel portion having a storage portion, in which the above-mentioned aqueous liquid cosmetic preparation is stored (filled).

[0063] The applicator of the present invention is not particularly limited as long as it is an applicator for cosmetics. In particular, the specific embodiment of the applicator described with reference to the drawings can be used as an eyeliner or eyebrow. The applicator of the present invention may also be an eyeshadow, mascara, etc. Applicators for such purposes may be used.

[0064] The applicator of the present invention may be, for example, a rotary dispenser type (FIG. 1), a knock dispenser type (not shown), a cosmetic-containing type (FIG. 2), or a collector type (FIG. 3).

[0065] Each component of the applicator of the present invention will be described below.

[0066] 〈Tip section〉 The tip portion has an application portion. The tip portion may be formed so that a cap is detachable.

[0067] The front barrel portion may have a core to assist in the supply of the aqueous liquid cosmetic from the barrel portion to the application portion. This core may be made of a capillary member such as a synthetic resin fiber bundle, a natural fiber bundle, or a resin porous body.

[0068] (Application part) The application part may be in the form of a brush tip, a pen core, or any other application body. In particular, when the application part is in the form of a brush tip, the applicator of the present invention is useful as an eyeliner or eyebrow applicator.

[0069] When the application part is in the form of another application body, the application part may be composed of, for example, a rubber, an elastomer, or a closed cell foam having resilience.

[0070] When the application part is shaped like a brush tip, the application part can be obtained, for example, by aligning (sharpening) a plurality of resin fiber bundles into a brush shape so that the tip is tapered, and then integrating the rear end part by heat welding and expanding the diameter into a flange shape.

[0071] When the application part is in the shape of a pen core, the application part may be made of a fiber bundle or may be made of a porous body made of resin.

[0072] The fibers constituting the application part may be synthetic fibers or natural fibers. The material of the synthetic fibers may be, for example, polybutylene terephthalate (PBT), etc. The thickness of the fibers may be 0.10 mm or more, or 0.11 mm or more, and may be 0.15 mm or less, or 0.14 mm or less.

[0073] <Shaft cylinder part> The barrel portion has a storage portion in which the above-mentioned water-based liquid cosmetic preparation is stored.

[0074] (Storage section) The container may be hollow so that it can be filled with an aqueous liquid cosmetic, or may be shaped like a batting that can be impregnated with an aqueous liquid cosmetic. When the container is hollow, the applicator is sometimes referred to as a "direct liquid type applicator." When the container is shaped like a batting, the applicator is sometimes referred to as a "batting type applicator."

[0075] In addition, when the storage section is hollow, a stirring body may be stored in the storage section. The stirring body may be in the form of a ball, a rod, etc. In addition, the stirring body may be made of metal or resin.

[0076] <cap> The cap is a member for covering the application part when not in use. The cap may have an inner cap and a spring. The inner cap is a cup-shaped member arranged to be movable back and forth in order to increase the airtightness of the application part. The spring is a member for biasing the inner cap backward.

[0077] <Other configurations> Other optional components constituting the applicator of the present invention may be taken into consideration in the description of the specific embodiments below. These components may be resin molded products.

[0078] Hereinafter, specific embodiments of the applicator will be described with reference to the drawings. For optional configurations of the applicator of the present invention, the following description can be appropriately referred to.

[0079] First embodiment of applicator: rotary dispenser type (Fig. 1) As shown in Fig. 1, the rotary dispenser type applicator 100 ejects the aqueous liquid cosmetic of the present invention to a brush-shaped applicator part 111 by a liquid pressing mechanism 130. This embodiment can be used as a direct liquid eyeliner. In front of the liquid pressing mechanism 130 is a storage part 121 in which the aqueous liquid cosmetic is stored, and in front of that is disposed the applicator part 111.

[0080] The liquid pressing mechanism 130 rotates the delivery member 131, which is disposed at the rear end of the barrel portion 120, in the circumferential direction relative to the barrel portion 120, thereby delivering the water-based liquid cosmetic in the storage portion 121 and supplying it to the application portion 111.

[0081] The liquid pressing mechanism 130 of this applicator 100 has a feeding member 131, a threaded rod 132, a drive cylinder 133, a screw body 134, and a piston body 135. The feeding member 131 is rotatably fitted to the rear end of the axial tube portion 120. The drive cylinder 133 can transmit the force of rotation of the feeding member 131 by the user to the threaded rod 132. The screw body 134 is fixed to the axial tube portion 120 and screws into the threaded rod 132. A piston body 135 is rotatably engaged with the tip of the threaded rod 132. The piston body slides within the accommodation portion 121 of the axial tube portion 120. The rotation of the feed member 131 is transmitted to the threaded rod 132 via the drive cylinder 133, and the rotation of the threaded rod 132 causes the threaded rod 132 and the piston body 135 to advance via the female thread of the nut-shaped threaded body 134, thereby causing the water-based liquid cosmetic to be ejected from within the storage section 121 to the application section 111.

[0082] As shown in Fig. 1, the propelling member 131 is exposed in a state of being rotatably fitted into the rear end of the shaft tube portion 120. A crown 131a is fitted into the rear end, so that the propelling member 131 has a closed cylindrical shape that can be operated. A drive tube 133 is fitted into the propelling member 131 and fixed in the rotational direction. A screw body 134 is attached inside the drive tube 133, and the screw body 134 is fixed in the rotational direction relative to the drive tube 133 and can move relatively in the axial direction. A spring member 131b can bias the propelling member 131, which serves as a rotating body, rearward.

[0083] Note that "fixed in the rotational direction" means that when one member is attached to another member, the one member is fixed so as not to rotate relative to the other member.

[0084] In this applicator, seal portion 113, joint member 114, front barrel portion 110, and applicator portion 111 are attached by fitting to front end portion 120a of barrel tube portion 120. An aqueous liquid cosmetic is stored in storage portion 121 of barrel body 120. The aqueous liquid cosmetic delivered from storage portion 121 passes through a flow path in joint member 114 and is ejected into applicator portion 111 so as to be applicable. After use, cap 40 can be attached to front barrel portion 110 to cover applicator portion 111 and front barrel portion 110.

[0085] 1, the barrel portion 120 may have a stirring ball 122 in the storage portion 121, which allows the water-based liquid cosmetic to be stirred by reciprocating motion. The cap 140 may have an inner cap 141 provided on its inside, and a spring 142 capable of biasing the inner cap 141 backward.

[0086] Furthermore, the applicator of the first embodiment may have a stopper 150 and a seal ball 112 in order to close the flow path of the water-based liquid cosmetic toward the applicator part 111 when not in use (during distribution).

[0087] Stopper 150 has a ring-shaped portion, and when not in use, this ring-shaped portion is disposed between the rear end of front barrel portion 110 and the front surface of the stepped portion of front end portion 120a of barrel portion 120. Stopper 150 fixes the positions of seal portion 113, joint member 114, front barrel portion 110, and applicator portion 111, making it possible to close the flow path of the water-based liquid cosmetic heading toward applicator portion 111.

[0088] A portion of the ring-shaped portion of stopper 150 may be cut off, and a knob may be integrally formed on the opposite side to the cut-off portion. When the knob is pulled, the ring-shaped portion expands in diameter from the cut-off portion, allowing it to be removed from between the rear end of front barrel portion 110 and front end portion 120a of barrel body 120.

[0089] When not in use, the sealing ball 112 is fitted into the inner diameter portion of the sealing portion 113, thereby preventing the water-based liquid cosmetic from flowing into the application portion 111 side.

[0090] During use, the user pulls stopper 150 out of barrel portion 120 and pushes front barrel portion 110 towards the rear end, causing the rear end narrow diameter portion of joint member 114 to abut against seal ball 112, which is removed from the inner diameter portion of seal portion 113 and pushed into storage portion 121. This causes the water-based liquid cosmetic in storage portion 121 to flow from the inner diameter portion of joint member 114 into the liquid flow path of applicator portion 111, and is supplied to applicator portion 111 from its inside, making it possible to apply the cosmetic to the target area.

[0091] <<Second embodiment of applicator: Cosmetic-containing applicator type (Fig. 2)>> As shown in FIG. 2, the applicator 200 of the cosmetic-incorporated applicator type has a structure for supplying the aqueous liquid cosmetic inside the barrel portion 220 to the applicator portion 211. The applicator 200 has a barrel portion 220, a front barrel portion 210, an applicator portion 211, and a retaining member 212. The barrel portion 220 stores the aqueous liquid cosmetic in a batting-like storage portion 221 by impregnation. The applicator portion 211 is provided on the front barrel portion 210, and can apply the aqueous liquid cosmetic to an object. The retaining member 212 is a member that covers the outer periphery of the applicator portion 211 on the barrel portion 220 side (base side) except for the tip portion 211a of the applicator portion 211. The applicator 200 may have a cap 240 that is configured to be detachable from the front barrel portion 210, and can cover the applicator portion 211 and the retaining member 212.

[0092] The padding-like housing portion 221 is housed within the barrel 220 from the center to the front barrel portion 210 , and is sealed and supported by a tail plug 222 fitted into the rear end of the barrel 220 .

[0093] A core 213 is disposed in the opening of the front barrel 210. This core may be made of an open-cell foam. The tail end of this core 213 is fitted into the tip of the storage section 221. Meanwhile, the tip of this core 213 is fitted into the tail end of the application section 211, so that the ink contained in the storage section 211 can be guided to the application section 211. In addition, the front barrel 210 has a slightly smaller diameter (smaller by the thickness of the cap 240) than the barrel section 220, so that a step is formed between the barrel section 220 and the front barrel 210. The core 213 is attached in the front barrel 210 via a substantially cylindrical support 214. The cylindrical rear end of the holding member 212 is fitted between the outer periphery of the support 214 and the inner periphery of the front barrel 210.

[0094] The tip of holding member 212 is located further forward than front barrel portion 210, and covers outer circumferential surface 211b of application part 211. Outer circumferential surface 212a of holding member 212 tapers into a conical side shape or a tapered shape.

[0095] Third embodiment of applicator: collector-type applicator (Fig. 3) As shown in Fig. 3(b), collector-type applicator type applicator 300 has collector 312 disposed in front of barrel portion 320, and barrel portion 320 houses housing portion 321. Collector 312 has a shape in which a plurality of leaf portions are arranged in the axial direction to form a comb-like shape. As shown in Fig. 3(a), front barrel portion 310 and barrel portion 320 on the rear side of front barrel portion 310 are fitted together.

[0096] The shaft tube portion 320 is formed in a pipe shape with an interior that is connected and open at the front and rear. A tail plug 323 is fitted into the rear of the shaft tube portion 320, thereby closing the rear of the shaft tube portion 320. As a result, the shaft tube portion 320 sandwiched between the front end of the tail plug 323 and the rear end of the collector 312 forms the storage portion 321.

[0097] No impregnated body such as batting is placed inside this storage section 321, and the water-based liquid cosmetic is directly stored therein, and a stirring body (such as a ball) 322 for stirring the water-based liquid cosmetic is also placed therein.

[0098] Collector 312 has a structure in which it is covered and held by front barrel portion 310 and barrel tube portion 320 .

[0099] Tapered brush-like applicator portion 311 protrudes from the opening at the front end of front barrel portion 310. Front barrel portion 310 is tapered to have a roughly conical side shape, and the tip angle of front barrel portion 310 may be formed to be roughly the same angle as the tip angle of applicator portion 311.

[0100] A cap can be removably fitted onto front barrel portion 310, thereby covering application portion 311.

[0101] Inside tip portion 310 which is formed to be hollow and tapered, bellows-shaped collector 312 is disposed behind application portion 311, and center core 313 is disposed penetrating within the hollow portion of collector 312.

[0102] The core 313 does not protrude from the rear end of the collector 312 into the storage section 321 of the axial tube section 320 (see FIG. 3(b)). The rear end face of the collector 312 and the rear end face of the core 313 are on approximately the same plane, so that the rear end of the core 313 does not protrude into the storage section 321. This makes it possible to ensure the capacity within the storage section 321. Furthermore, when the stirrer 322 is provided within the storage section 321, even if the stirrer 322 moves within the storage section 321, it will not collide with the core 313. This suppresses deformation of the core 313, resulting in sufficient penetration of the coating liquid. EXAMPLES

[0103] The present invention will be specifically described with reference to examples and comparative examples, but the present invention is not limited to these.

[0104] <<Preparation of Water-Based Liquid Cosmetics>> Titanium dioxide pigment and polyorganic acid or polyorganic acid salt were added to purified water in the amounts shown in Table 1, and dispersed using a disperser (Labostar, Ashizawa Finetech Co., Ltd.). After confirming that the average particle size of the titanium dioxide pigment was 300 nm, the other ingredients shown in Table 1 were added and mixed to prepare an aqueous liquid cosmetic.

[0105] Details of the materials referred to in Table 1 with *1 to *9 are as follows. *1: CR-50, Ishihara Sangyo Kaisha *2: TALOX ABL-412HP / R-516P, Titanium Industries *3: Included in the above CR-50 and TALOX ABL-412HP *4:DK BLACK No.2, Daito Kasei Kogyo Co., Ltd. *5: Ethylhexyl acrylate / methyl methacrylate copolymer [(acrylates / methylstyrene / styrene) ammonium copolymer] (Emapoly CE-119N, Gifu Ceramics Co., Ltd., solid content 47%) *6: DERMACRYL AQF, Nouryon Japan Co., Ltd. *7: Aqua Dew SPA-30B, Ajinomoto Healthy Supply Co., Ltd. *8:Jurimer AC-10SL, Toagosei *9:DDP-10, Nikko Chemicals

[0106] The pH of the prepared water-based liquid cosmetic composition was measured using a glass electrode pH meter at a temperature of 25°C. The viscosity of the prepared water-based liquid cosmetic composition was measured using a viscometer (ELD type viscometer, Toki Sangyo Co., Ltd.) at a temperature of 25°C, a rotation speed of 50 rpm (shear rate of 192 [s -1 The measurements were carried out under the conditions of

[0107] "evaluation" The prepared aqueous liquid cosmetic was filled into an applicator as shown in FIG. 1 to prepare a liquid-in-one eyeliner. <Color development (immediately after preparation)> The aqueous liquid cosmetic preparation was applied to the skin, and the appearance of the drawn lines was visually confirmed. The evaluation criteria were as follows: A: The color was very good. B: The color was good. C: The color was not very good. D: The color was poor.

[0108] Color development (after 1 week of storage) After storing the applicator for one week with the cap facing up, the aqueous liquid cosmetic was applied to the skin and the appearance was visually confirmed. A: The color was very good. B: The color was good. C: Transparency was observed and color development was poor. D: Transparency was observed and color development was poor.

[0109] <Liquid runoff> The aqueous liquid cosmetic composition was applied to the skin, and the state of the drawn lines was visually confirmed. The evaluation criteria were as follows: A: There were no problems with the flow rate, it was moist, and the application area was good. B: Although there was a decrease in the flow rate, there were no problems with application and the application area was not chipped. C: The flow rate was reduced, and slight chipping was observed in the applied area.

[0110] <Non-drying when capped off> After leaving the container uncapped for 10 minutes, the aqueous liquid cosmetic was applied to the skin and the appearance of the drawn lines was evaluated. The evaluation criteria were as follows: A: There was no smudging and the applied area was good. B: Slight smearing was observed, and slight chipping was observed in the applied area. C: The coating was faded and there were large chips in the applied area. D: The application area was noticeably faded and could not be seen.

[0111] <Adhesiveness> The water-based liquid cosmetic was applied to the skin, and the drawn line was rubbed with the pad of a finger to evaluate adhesion. The evaluation criteria were as follows: A: There was no change in the drawn line due to rubbing with the pad of a finger. B: A slight change was observed in the drawn line when rubbed with the pad of a finger. C: Significant changes were observed in the drawn lines when rubbed with the pad of a finger.

[0112] <Water-resistant adhesion> The water-based liquid cosmetic was applied to the skin, and then water was run toward the drawn line and the drawn line was rubbed with the pad of a finger to evaluate water-resistant adhesion. The evaluation criteria were as follows: A: No change in the drawn line when rubbed with the pad of a finger. B: A slight change was observed in the drawn line when rubbed with the pad of a finger. C: Significant changes were observed in the drawn lines when rubbed with the pad of a finger.

[0113] <Sebum resistance> The water-based liquid cosmetic was applied to the skin, artificial sebum was applied to the drawn line, and the drawn line was rubbed with the pad of a finger to evaluate the sebum resistance. The evaluation criteria were as follows: A: No change in the drawn line was observed when rubbed with the pad of a finger. B: There was no slight change in the drawn line when rubbed with the pad of a finger. C: Significant changes were observed in the drawn lines when rubbed with the pad of a finger.

[0114] The configurations and evaluation results of the examples and comparative examples are shown in Tables 1 and 2.

[0115] [Table 1]

[0116] [Table 2]

[0117] It can be seen from Table 1 that the cosmetics of Examples 1 to 9 have extremely good color development one week after application compared to the cosmetics of Comparative Examples 1 to 4. It can also be seen that the cosmetics of Examples 1 to 9 have achieved results equivalent to or better than the cosmetics of Comparative Examples 1 to 4 in terms of color development, liquid outflow, cap-off non-drying properties, adhesion, sebum resistance, and water-resistant adhesion. [Explanation of symbols]

[0118] 100, 200, 300 applicator 110, 210, 310 Tip shaft part 111, 211, 311 Application section 112 Seal Ball 113 Seal part 114 Joint parts 120, 220, 320 Shaft cylinder part 120a Front end of shaft cylinder 121, 221, 321 Storage unit 122 Mixing Ball 130 Liquid pressure mechanism 131 Feeding member 131a Crown of Heaven 131b Spring member 132 Threaded Rod 133 Drive tube 134 Threaded body 135 Piston body 140, 240 Cap 141 Inner cap 142 Spring 150 Stopper 211a Tip of application part 211b Outer circumferential surface of application part 212 Retaining member 212a Outer circumferential surface of holding member 213 Core 214 Support 222 Tail plug 312 Collector 313 Core 322 Stirring body 323 Tail plug

Claims

1. A cosmetic material contained in a pen-type applicator, The emulsion particles contain a titanium oxide pigment, a polyorganic acid or a polyorganic acid salt, an acrylates copolymer, and a water-based solvent; the ratio of the mass of the titanium oxide pigment to the mass of the polyorganic acid or polyorganic acid salt is greater than 5; Water-based liquid cosmetics.

2. 2. The aqueous liquid cosmetic according to claim 1, wherein the content of the titanium oxide pigment is 10% by mass or more based on the total mass of the aqueous liquid cosmetic.

3. 3. The aqueous liquid cosmetic preparation according to claim 1, wherein the polyorganic acid or the polyorganic acid salt is at least one selected from the group consisting of polyaspartic acid, polylactic acid, polyphosphoric acid, and polyacrylic acid, or a salt thereof.

4. 3. The aqueous liquid cosmetic preparation according to claim 1, wherein the emulsion particles containing the acrylates copolymer are core-shell type emulsion particles.

5. 3. The aqueous liquid cosmetic preparation according to claim 1, wherein the aqueous solvent contains water and at least one alcohol selected from the group consisting of lower alcohols having 5 or less carbon atoms and polyhydric alcohols having 10 or less carbon atoms.

6. 3. The aqueous liquid cosmetic preparation according to claim 1, further comprising a pigment other than the titanium oxide pigment.

7. 7. The aqueous liquid cosmetic preparation according to claim 6, wherein a content of the titanium oxide pigment is 45% by mass or more based on a total mass of the titanium oxide pigment and pigments other than the titanium oxide pigment.

8. A pen-type applicator containing the aqueous liquid cosmetic preparation according to claim 1 or 2.

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