Water-based liquid cosmetic

Abstract

To provide water-based liquid cosmetics that offer high storage stability without pigment separation, while ensuring the development of vivid colors, excellent adhesion post-application, and excellent softness.SOLUTION: Water-based liquid cosmetics comprise following components (A), (B), (C), (D) and (E): (A) black titanium oxide, (B) silica-treated red iron oxide or yellow iron oxide, (C) at least one polymer selected from (meth)alkyl acrylate copolymers and copolymers comprising styrene and (meth)acrylic acid as constitutional units, (D) polyvinyl pyrrolidone, and (E) 1,3-butyleneglycol. The mass ratio of the total of components (A) and (B) to component (D), ((A)+(B)) / (D), is 5-30.SELECTED DRAWING: None

Description

Technical Field

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

Background Art

[0002] Eyeliner is widely used for the purpose of enhancing the impression of the eye area by applying it around the eyes and emphasizing the contour of the eye area. In recent years, not only black, which has a high effect of making the eyes look larger, but also those containing colors other than black, high-luminance pearl pigments, lames, etc. have been increasing in tendency due to higher fashion requirements. On the other hand, as a product form of aqueous liquid cosmetics such as eyeliner, pen-type and brush pen-type cosmetics are used because they are applied to the contour of the eyes. For example, Patent Document 1 describes an aqueous eyeliner composition that combines and formulates a luminance pigment, carbon black, a polysaccharide derived from a microorganism, a volatile alcohol, and an acrylic acid alkyl copolymer emulsion, which is excellent in abrasion resistance, has vivid color development and a smooth writing feeling, and further has good storage stability. Patent Document 2 describes an aqueous liquid cosmetic in which a luminance powder and iron oxide are used in combination with a water-soluble dispersant such as sodium polyaspartate and polyvinylpyrrolidone, which has excellent storage stability with little sedimentation of the luminance powder even at low viscosity, excellent redispersibility of the sedimented luminance powder, and can be sufficiently discharged even in a pen-type form, and can stably form a drawn line having a pearl feeling.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In pen-type applications, powder can clog the gaps between fibers in the applicator, such as the brush tip, which is made up of a collection of fine fibers. Furthermore, reducing the viscosity of the cosmetic to improve dispensing performance and allow the liquid to adhere more easily to the applicator can lead to precipitation over time. Additionally, powders such as carbon black, due to their strong cohesive force, do not disperse uniformly within the system, resulting in uneven coatings. Furthermore, conventional eyeliners, especially those in shades other than black such as brown, were not entirely satisfactory in terms of performance. [Means for solving the problem]

[0005] The inventors have discovered that by combining black titanium oxide, a black powder, with a colored powder other than black, such as red iron oxide or yellow iron oxide treated with silica, and by using an acrylic acid emulsion, polyvinylpyrrolidone, and 1,3-butylene glycol in combination, it is possible to obtain a water-based liquid cosmetic that has excellent storage stability without pigment separation, produces deep and vivid colors, has good adhesion after application, is resistant to cracking, and is soft.

[0006] The present invention comprises the following components (A), (B), (C), (D), and (E): (A) Black titanium oxide, (B) Silica-treated red iron oxide or yellow iron oxide, (C) One or more polymers selected from alkyl (meth)acrylate copolymers and copolymers comprising styrene and (meth)acrylic acid as constituent units. (D) Polyvinylpyrrolidone, (E) 1,3-Butylene glycol This invention relates to an aqueous liquid cosmetic composition containing [a specific ingredient], wherein the mass ratio of the total amount of ingredients (A) and (B) to ingredient (D) ((A) + (B)) / (D) is 5 to 30. [Effects of the Invention]

[0007] The aqueous liquid cosmetic composition of the present invention exhibits excellent storage stability without pigment separation, even when different types of powders are blended, produces rich and vivid colors, has good adhesion after application, is resistant to cracking, and is highly flexible. [Modes for carrying out the invention]

[0008] The component (A) used in this invention is black titanium oxide. By using black titanium oxide among black powders, it is possible to obtain a cosmetic with excellent color stability. Examples of black titanium oxide include titanium oxide produced by heating and reducing titanium oxide in ammonia gas at approximately 800°C, resulting in a mixture of a solid solution of titanium oxide and titanium nitride. Commercially available black titanium oxides such as Titanium Black 12S, Titanium Black 13M (both manufactured by Mitsubishi Materials Corporation, product names), and Tilack D (manufactured by Akaho Chemical Industries, Ltd., product name) can be used.

[0009] The content of component (A) is preferably 0.1 to 20% by mass, more preferably 1 to 16% by mass, and even more preferably 3 to 12% by mass, from the viewpoint of storage stability, color intensity, adhesion after application, and softness of the coating film.

[0010] Component (B) is silica-treated red iron oxide or yellow iron oxide. Either red iron oxide or yellow iron oxide treated with silica by a conventional method is acceptable. The amount of silica used to treat red iron oxide or yellow iron oxide is preferably 0.1 to 15 parts by mass, more preferably 0.5 to 10 parts by mass, and even more preferably 1 to 5 parts by mass, per 100 parts by mass of powder, from the viewpoint of imparting sufficient hydrophilicity to the powder and reducing dispersibility.

[0011] Component (B) can consist of one or more types, and its content is preferably 0.1 to 20% by mass, more preferably 1 to 16% by mass, and even more preferably 3 to 12% by mass, from the viewpoint of storage stability, color intensity, adhesion after application, and softness of the coating film.

[0012] The aqueous liquid cosmetic of the present invention can further contain powders other than components (A) and (B) as long as the effects of the present invention are not impaired. As the powders other than components (A) and (B), those used in ordinary cosmetics can be used, and extender pigments, coloring pigments, pearlescent pigments, etc. can be used. Examples of extender pigments include inorganic pigments such as anhydrous silicic acid, talc, sericite, synthetic phlogopite, bentonite, and composite powders thereof.

[0013] Examples of coloring pigments include synthetic organic pigments such as Red No. 201, Red No. 202, Red No. 227, Yellow No. 4, Yellow No. 5, Yellow No. 401, Blue No. 1, Blue No. 404; natural organic dyes such as β-carotene, caramel, paprika pigment, etc.

[0014] Examples of pearlescent pigments include those obtained by coating the surfaces of plate-like powders such as mica, synthetic phlogopite, glass, silica, alumina, etc. with colorants such as titanium oxide, iron oxide, silicon oxide, ultramarine, chromium oxide, tin oxide, chromium hydroxide, gold, silver, carmine, organic pigments, etc., and those obtained by cutting film blanks such as polyethylene terephthalate · polymethyl methacrylate laminated powder, polyethylene terephthalate · aluminum vapor-deposited powder, polyethylene terephthalate · gold vapor-deposited laminated powder, etc. into arbitrary shapes can be used.

[0015] In the present invention, from the viewpoints of storage stability, color density, adhesion after application, and softness of the coating film, the content of all powders including components (A) and (B) is preferably 0.1 to 25% by mass in the total composition, more preferably 1 to 21% by mass, and even more preferably 3 to 17% by mass.

[0016] In the present invention, from the viewpoints of storage stability, color density, adhesion after application, and softness of the coating film, the mass ratio of components (A) and (B) in all powders (((A)+(B)) / (all powders)) is preferably 0.7 or more, more preferably 0.8 or more, and even more preferably 0.95 or more.

[0017] Among the components (C), the (meth)acrylic acid alkyl copolymer is a polymer or copolymer of a monomer selected from alkyl acrylates and alkyl methacrylates. Such a polymer or copolymer is not limited as long as it is used in ordinary cosmetics, but it is mainly composed of a monomer mixture containing a monomer selected from alkyl acrylates and alkyl methacrylates, and further contains an alkyl acrylate monomer and / or an alkyl methacrylate monomer and a monomer mixture composed of methacrylic acid and / or acrylic acid monomer, and a copolymer obtained by emulsion polymerization of these is preferred. From the viewpoints of adhesion and softness after coating, the glass transition temperature (Tg) of the copolymer is preferably -30°C to 100°C, more preferably -20°C to 70°C.

[0018] In addition, examples of the copolymer composed of styrene and (meth)acrylic acid as a structural unit include a copolymer of styrene and one or more monomers selected from (meth)acrylic acid or their simple esters, a copolymer of styrene and one or more monomers selected from (meth)acrylic acid or their simple esters and ammonium methacrylate, and the like.

[0019] As the component (C), those having a form of an emulsion containing such a copolymer and water can be used. From the viewpoints of storage stability, color density, adhesion after coating, and softness of the coating film, the copolymer content (solid content) in the emulsion is preferably 20 to 60% by mass, more preferably 25 to 55% by mass. Also, from the same viewpoints, it is preferable to contain a polymer or copolymer having a particle size of 10 to 50 nm.

[0020] As the (meth)acrylic acid alkyl copolymer emulsion, commercially available products such as Iodzol GH256F (particle size 20 to 40 nm; manufactured by Nurion Japan Co., Ltd.) and Daitzol 5000AD (particle size 130 to 150 nm; manufactured by Daito Kasei Kogyo Co., Ltd.) can be used. Furthermore, commercially available (meth)acrylic acid / styrene copolymer emulsions such as Yodozol GH41F (manufactured by Nurion Japan Co., Ltd.), Daitozol 5000STY (particle size 110-140 nm; manufactured by Daito Chemical Industries Co., Ltd.), and SYNTRAN 5760CG (manufactured by Interpolymer Co., Ltd.) can be used.

[0021] As for component (C), an alkyl (meth)acrylate copolymer is preferred from the viewpoint of storage stability, color intensity, adhesion after application, and softness of the coating film. Component (C) can be one or more types, and its content is preferably 0.5 to 20% by mass, more preferably 0.8 to 15% by mass, and even more preferably 1.2 to 12% by mass, from the viewpoint of storage stability, color intensity, adhesion after application, and softness of the coating film.

[0022] Component (D), polyvinylpyrrolidone, is a polymer of 1-vinyl-2-pyrrolidone and is a water-soluble polymer. From the viewpoint of storage stability and color intensity, polyvinylpyrrolidone is preferably K-value (viscosity characteristic value) of 15 to 120, and more preferably 30 to 120. Here, the K value is a viscosity characteristic value that correlates with molecular weight, and is calculated using the following formula. K=(1.5 logηrel -1) / (0.15+0.003c)+(300c logηrel +(c+1.5c logηrel ) 2 ) 1 / 2 / (0.15c+0.003c 2 ) ηrel: Relative viscosity of polyvinylpyrrolidone aqueous solution with respect to water. c: Polyvinylpyrrolidone concentration (%) in an aqueous solution of polyvinylpyrrolidone

[0023] For component (D), commercially available products such as Rubiscol K17, Rubiscol K30, Rubiscol K80 (all manufactured by BASF), PVPK-30, PVPK-60, PVPK-90, and PVPK-120 (all manufactured by ISP) can be used.

[0024] Component (D) can be one or more types, and its content is preferably 0.5 to 3.5% by mass, more preferably 0.7 to 3% by mass, and even more preferably 0.8 to 2.3% by mass, from the viewpoint of storage stability and color intensity.

[0025] The content of 1,3-butylene glycol in component (E) is preferably 5 to 15% by mass, more preferably 6 to 12% by mass, and even more preferably 7 to 10% by mass, from the viewpoint of ensuring excellent storage stability without pigment separation, good color development, excellent adhesion and softness after application, and further improving coatability.

[0026] The aqueous liquid cosmetic composition of the present invention may further contain an organopolysiloxane to which (F) poly(N-acylalkyleneimine) segments are bound, which can further improve adhesion.

[0027] As an organopolysiloxane formed by the bonding of poly(N-acylalkyleneimine) segments, at least two silicon atoms of the organopolysiloxane segments constituting the main chain are connected via alkylene groups containing heteroatoms, as shown in the general formula (1);

[0028] [ka]

[0029] (In the formula, R 1 (where represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and t represents 2 or 3.) An organopolysiloxane comprising poly(N-acylalkyleneimine) segments consisting of repeating units represented by , The number-average molecular weight of the poly(N-acylalkyleneimine) segments is 500 to 4000. The mass ratio (a / b) of the organopolysiloxane segment (a) and the poly(N-acylalkyleneimine) segment (b) constituting the main chain is 70 / 30 to 99 / 1. The weight-average molecular weight of organopolysiloxane segments between adjacent poly(N-acylalkyleneimine) segments is 5000 to 40000. Organopolysiloxanes are preferred in which the weight-average molecular weight of the organopolysiloxane segments constituting the main chain is 15,000 to 200,000. Such organopolysiloxanes can be those described in, for example, Japanese Patent Publication No. 4-85334 and Japanese Patent Publication No. 2009-24114.

[0030] The organopolysiloxane of component (F) is preferably poly(N-formylethyleneimine)organosiloxane, poly(N-acetylethyleneimine)organosiloxane, poly(N-propionylethyleneimine)organosiloxane, etc., and more preferably poly(N-propionylethyleneimine)organosiloxane (POLYSILICONE-9).

[0031] Component (F) can be one or more types, and its content is preferably 0.05 to 20% by mass, more preferably 0.08 to 15% by mass, and even more preferably 0.12 to 12% by mass, from the viewpoint of adhesion after application and softness of the coating film.

[0032] The aqueous liquid cosmetic composition of the present invention may further contain a film-forming polymer emulsion in addition to components (C) and (F), to the extent that it does not impair the effects of the present invention. Examples of such film-forming polymer emulsions include polyvinyl acetate emulsion, polyacrylic acid ester emulsion, polyvinyl chloride emulsion, alkyl (meth)acrylate / vinyl acetate copolymer emulsion, vinylpyrrolidone / styrene copolymer emulsion, and silicone-based polymer emulsion.

[0033] The aqueous liquid cosmetic composition of the present invention may further contain, in addition to the above, ingredients commonly used in cosmetics, such as oily components, polyhydric alcohols other than component (E), humectants, thickeners, surfactants, fragrances, preservatives, antioxidants, pH adjusters, chelating agents, herbal extracts, vitamins, and the like.

[0034] The present invention relates to an aqueous liquid cosmetic composition, which is non-emulsified and uses water as its main solvent. In the present invention, the water content is preferably 30% by mass or more of the total composition, more preferably 30 to 90% by mass, even more preferably 40 to 80% by mass, and most preferably 45 to 70% by mass.

[0035] The aqueous liquid cosmetic composition of the present invention can be manufactured by conventional methods and is preferably in the form of a formulation applied around the eyes, such as an eyeliner, eyeliner overcoat, or eyeliner primer. In particular, it is suitable as an eyeliner used by filling a bellows-type brush pen. [Examples]

[0036] Examples 1-12, Comparative Examples 1-7 Water-based liquid cosmetics (eyeliners) with the compositions shown in Tables 1 and 2 were manufactured, and their color intensity, storage stability, adhesion, and softness were evaluated. The results are shown in Tables 1 and 2.

[0037] (Manufacturing method) (Step 1) Components (D) and (E), and a portion of purified water were added to component (A) to prepare a slurry of black pigment. (Step 2) The remaining amounts of components (D) and (E), as well as a portion of the purified water, were added to component (B) to prepare an iron oxide slurry. (Step 3) The slurries from Steps 1 and 2 were mixed with other components to prepare an aqueous liquid cosmetic, which was then filled into a bellows-type brush pen to obtain an eyeliner.

[0038] (Evaluation method) (1) Intensity of color: The number of people who judged each water-based liquid cosmetic to have good (intense) color payoff when applied around the eyes, as determined by five expert evaluators, is shown.

[0039] (2) Storage stability: Using each water-based liquid cosmetic, five lines 2 mm wide and 3 cm long were drawn on paper (copy paper, plain paper). Each water-based cosmetic was stored in a constant temperature bath at 45°C for one month. The color change was evaluated by comparing the color of the lines drawn before storage with the color of the lines drawn after storage, according to the evaluation criteria below. A: Equivalent. B: There is a slight change. C: Changes have occurred. D: Fail.

[0040] (3) Feeling of closeness: The number of people who judged each water-based liquid cosmetic to have good adhesion when applied around the eyes, based on evaluations by five expert evaluators, is shown.

[0041] (4) Softness: Each water-based liquid cosmetic was applied to a polyethylene sheet and dried to create a film (film dimensions: 5 mm wide, 5 cm long, 50 μm thick; drying conditions: 30°C for 6 hours). The film was then repeatedly folded while attached to the polyethylene sheet, and the number of folds until cracking was measured. The results are shown as the average value of five films.

[0042] [Table 1]

[0043] [Table 2]

[0044] *1: Manufactured by Akaho Kasei Co., Ltd., TILACK D, *2: Manufactured by Daito Kasei Kogyo Co., Ltd., DK BLACK No.2 *3: Titanium Industries Co., Ltd., TAROX Synthetic Iron Oxide BL-100P, *4: Manufactured by Daito Chemical Industries, Ltd., SIH-2 RED No.211P (processing volume 2%) *5: Manufactured by Titanium Industry Co., Ltd., TAROX Synthetic Iron Oxide R-516P, *6: Yodzol GH256F (particle size 20-40nm), manufactured by Nurion Japan Co., Ltd. *7: Daito Chemical Industries, Ltd., Daitozol 5000AD (particle size 130-150 nm) *8: Daito Chemical Industries, Ltd., Daitozol 5000STY (particle size 110-140nm) *9: Manufactured by ISP, PVP K-90

Claims

1. The following components (A), (B), (C), (D), and (E): (A) Black titanium oxide, (B) Silica-treated red iron oxide or yellow iron oxide, (C) One or more polymers selected from alkyl (meth)acrylate copolymers and copolymers comprising styrene and (meth)acrylic acid as constituent units. (D) Polyvinylpyrrolidone, (E) 1,3-Butylene glycol A water-based liquid cosmetic containing the above, wherein the mass ratio of the total amount of components (A) and (B) to component (D) ((A) + (B)) / (D) is 5 to 30.

2. The aqueous liquid cosmetic composition according to claim 1, wherein the content of component (A) is 0.1 to 20% by mass.

3. The aqueous liquid cosmetic composition according to claim 1, wherein the content of component (B) is 0.1 to 20% by mass.

4. The aqueous liquid cosmetic composition according to claim 1, wherein the content of component (E) is 5 to 15% by mass.

5. The aqueous liquid cosmetic composition according to any one of claims 1 to 4, wherein the total powder content is 0.1 to 25% by mass.

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