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 preparation. [Background technology]

[0002] Eyeliner is widely used around the eyes to enhance the impression of the eyes by emphasizing the contours of the eyes. In recent years, in addition to black, which is highly effective in making the eyes look larger, there has been an increase in colors other than black and those containing highly lustrous pearl pigments and glitter agents, in response to demands for greater fashionability. On the other hand, as the product form of aqueous liquid cosmetics such as eyeliner, pen-type or brush-type cosmetics are used since they are applied to the contours of the eyes. For example, Patent Document 1 describes that an aqueous eyeliner composition containing a combination of a luster pigment, carbon black, a polysaccharide derived from a microorganism, a volatile alcohol, and an alkyl acrylate copolymer emulsion has excellent friction resistance, vivid coloring, a smooth writing feel, and good storage stability. Patent Document 2 describes that an aqueous liquid cosmetic composition that uses glittering powder and iron oxide in combination with a water-soluble dispersant such as sodium polyaspartate and polyvinylpyrrolidone has excellent storage stability even at low viscosity, with the glittering powder being less likely to settle, and also has excellent redispersibility for the glittering powder that has settled, and can be discharged satisfactorily even in a pen-type form, and can stably form drawn lines with a pearly feel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-153744 A [Patent Document 2] JP 2020-132619 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the case of pen-type cosmetic products, powder can get stuck in the gaps between the fibers of the brush tip, which is made of an aggregate of thin fibers. In addition, if the viscosity of the cosmetic is reduced in order to improve the ejection properties or to make it easier for the cosmetic to absorb the liquid, it will settle over time. Furthermore, powders such as carbon black have strong cohesive power and do not disperse uniformly in the system, which can lead to unevenness in the coating. Furthermore, conventional eyeliners have not been fully satisfactory in terms of performance, particularly in colors other than black, such as brown. [Means for solving the problem]

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

[0006] The present invention comprises the following components (A), (B), (C), (D) and (E): (A) Black titanium dioxide, (B) Silica-treated red or yellow iron oxide; (C) one or more polymers selected from alkyl (meth)acrylate copolymers and copolymers having styrene and (meth)acrylic acid as structural units; (D) polyvinylpyrrolidone, (E) 1,3-butylene glycol wherein the mass ratio of the total amount of components (A) and (B) to component (D), ((A)+(B)) / (D), is 5 to 30. Effect of the Invention

[0007] The aqueous liquid cosmetic of the present invention has excellent storage stability without separation of pigments even when mixed with different types of powders, has deep and vivid color development, and further has good adhesion after application, is less likely to crack, and has excellent softness. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The component (A) used in the present invention is black titanium oxide. By using black titanium oxide among black powders, it is possible to obtain a cosmetic preparation having excellent color stability. Black titanium oxide is obtained by heating and reducing titanium oxide in ammonia gas at about 800° C., and is a mixture of a solid solution of titanium oxide and titanium nitride. As such black titanium oxide, for example, commercially available products such as Titanium Black 12S, Titanium Black 13M (both are product names manufactured by Mitsubishi Materials Corporation), Tilack D (product name manufactured by Ako Kasei Co., Ltd.) can be used.

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

[0010] Component (B) is silica-treated red or yellow iron oxide. Any red iron oxide or yellow iron oxide that has been treated with silica by a conventional method may be used. The amount of silica to be added to 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) may be used alone or in combination with two or more kinds. From the viewpoints of storage stability, color intensity, adhesion after application, and softness of the coating film, the content is preferably 0.1 to 20 mass % of the total composition, more preferably 1 to 16 mass %, and even more preferably 3 to 12 mass %.

[0012] The aqueous liquid cosmetic preparation of the present invention may further contain powders other than components (A) and (B) to the extent that the effects of the present invention are not impaired. As the powders other than the components (A) and (B), those usually used in cosmetics, such as extender pigments, coloring pigments, and luster pigments, can be used. Examples of the extender pigment include inorganic pigments such as silicic anhydride, talc, sericite, synthetic phlogopite, and bentonite, and composite powders of these pigments.

[0013] Examples of color 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, and Blue No. 404; and natural organic pigments such as β-carotene, caramel, and paprika color.

[0014] Luster pigments that can be used include plate-like powders such as mica, synthetic phlogopite, glass, silica, alumina, etc., the surface of which is coated with colorants such as titanium oxide, iron oxide, silicon oxide, Prussian blue, chromium oxide, tin oxide, chromium hydroxide, gold, silver, carmine, organic pigments, etc., as well as film rolls cut into any shape such as polyethylene terephthalate-polymethyl methacrylate laminated powder, polyethylene terephthalate-aluminum vapor-deposited powder, and polyethylene terephthalate-gold vapor-deposited laminated powder.

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

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

[0017] Of the components (C), the alkyl (meth)acrylate 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 a copolymer obtained by emulsion polymerization of a monomer mixture containing as a main component a monomer selected from alkyl acrylate and alkyl methacrylate, and further containing as a main component a monomer mixture containing an alkyl acrylate monomer and / or an alkyl methacrylate monomer, and a methacrylic acid and / or an acrylic acid monomer is preferred. The glass transition temperature (Tg) of the copolymer is preferably from -30°C to 100°C, more preferably from -20°C to 70°C, from the viewpoints of adhesion and softness after application.

[0018] Examples of copolymers having styrene and (meth)acrylic acid as constituent units include copolymers of styrene and one or more monomers selected from (meth)acrylic acid or simple esters thereof, and copolymers of styrene, one or more monomers selected from (meth)acrylic acid or simple esters thereof, and ammonium methacrylate.

[0019] Component (C) may be in the form of an emulsion containing such a copolymer and water. The copolymer content (solid content) in the emulsion is preferably 20 to 60% by mass, more preferably 25 to 55% by mass, from the viewpoints of storage stability, color intensity, adhesion after application, and softness of the coating film. From the same viewpoint, it is preferable that the emulsion contains a polymer or copolymer having a particle size of 10 to 50 nm.

[0020] As the alkyl (meth)acrylate copolymer emulsion, commercially available products such as Yodosol GH256F (particle size: 20 to 40 nm; manufactured by Nouryon Japan Co., Ltd.) and Daitosol 5000AD (particle size: 130 to 150 nm; manufactured by Daito Chemical Industry Co., Ltd.) can be used. As the (meth)acrylic acid-styrene copolymer emulsion, commercially available products such as Yodosol GH41F (manufactured by Nouryon Japan), Daitosol 5000STY (particle size 110 to 140 nm; manufactured by Daito Chemical Industry Co., Ltd.), and SYNTRAN 5760CG (manufactured by Interpolymer Co., Ltd.) can be used.

[0021] From the viewpoints of storage stability, color intensity, adhesion after application, and softness of the coating film, component (C) is preferably an alkyl (meth)acrylate copolymer. Component (C) may be used alone or in combination with two or more kinds. From the viewpoints of storage stability, color intensity, adhesion after application, and softness of the coating film, the content is preferably 0.5 to 20 mass% of the total composition, more preferably 0.8 to 15 mass%, and even more preferably 1.2 to 12 mass%.

[0022] The polyvinylpyrrolidone of the component (D) is a polymer of 1-vinyl-2-pyrrolidone, and is a water-soluble polymer. Polyvinylpyrrolidone preferably has a K value (characteristic viscosity value) of 15 to 120, more preferably 30 to 120, from the viewpoints of storage stability and color intensity. Here, the K value is a viscosity characteristic value that correlates with the molecular weight and is calculated by 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 to water, c: Polyvinylpyrrolidone concentration in the aqueous polyvinylpyrrolidone solution (%)

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

[0024] One or more types of component (D) can be used, and from the viewpoints of stability in storage and color intensity, the content is preferably 0.5 to 3.5 mass % of the total composition, more preferably 0.7 to 3 mass %, and even more preferably 0.8 to 2.3 mass %.

[0025] From the viewpoints of preventing separation of the pigment and thus achieving excellent storage stability, good color development, excellent adhesion and softness after application, and further improving application properties, the content of 1,3-butylene glycol in component (E) is preferably 5 to 15 mass % of the total composition, more preferably 6 to 12 mass %, and even more preferably 7 to 10 mass %.

[0026] The aqueous liquid cosmetic preparation of the present invention may further contain (F) an organopolysiloxane formed by bonding poly(N-acylalkyleneimine) segments, which can further improve adhesion.

[0027] The organopolysiloxane in which poly(N-acylalkyleneimine) segments are bonded is preferably an organopolysiloxane having at least two silicon atoms of the organopolysiloxane segments constituting the main chain, the silicon atoms being linked via an alkylene group containing a heteroatom, the silicon atoms being represented by the following general formula (1);

[0028] [ka]

[0029] (In the formula, R 1 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 each having a repeating unit represented by the formula: The number average molecular weight of the poly(N-acylalkyleneimine) segment is 500 to 4000; the mass ratio (a / b) of the organopolysiloxane segment (a) constituting the main chain to the poly(N-acylalkyleneimine) segment (b) is 70 / 30 to 99 / 1; the weight average molecular weight of the organopolysiloxane segment between adjacent poly(N-acylalkyleneimine) segments is 5,000 to 40,000; An organopolysiloxane in which the organopolysiloxane segment constituting the main chain has a weight average molecular weight of 15,000 to 200,000 is preferred. As such organopolysiloxanes, for example, those described in JP-A-4-85334 and JP-A-2009-24114 can be used.

[0030] As the organopolysiloxane of component (F), poly(N-formylethyleneimine)organosiloxane, poly(N-acetylethyleneimine)organosiloxane, poly(N-propionylethyleneimine)organosiloxane, etc. are preferred, with poly(N-propionylethyleneimine)organosiloxane (POLYSILICONE-9) being more preferred.

[0031] Component (F) may be used alone or in combination with two or more kinds. From the viewpoints of adhesion after application and softness of the coating film, the content is preferably from 0.05 to 20 mass % of the total composition, more preferably from 0.08 to 15 mass %, and even more preferably from 0.12 to 12 mass %.

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

[0033] The aqueous liquid cosmetic preparation of the present invention may further contain, in addition to the above, ingredients that are used in ordinary cosmetics, such as oily ingredients, polyhydric alcohols other than component (E), moisturizers, thickeners, surfactants, fragrances, preservatives, antioxidants, pH adjusters, chelating agents, herbal extracts, vitamins, etc.

[0034] The present invention is an aqueous liquid cosmetic preparation that is non-emulsion type and uses water as the main solvent. In the present invention, the content of water in the entire composition is preferably 30% by mass or more, more preferably 30 to 90% by mass, further preferably 40 to 80% by mass, and even more preferably 45 to 70% by mass.

[0035] The aqueous liquid cosmetic composition of the present invention can be produced by a conventional method, and is preferably in the form of an eyeliner, eyeliner overcoat, eyeliner base, etc., to be applied around the eyes. In particular, it is suitable as an eyeliner to be filled into a bellows-type brush pen. EXAMPLES

[0036] Examples 1 to 12, Comparative Examples 1 to 7 An aqueous liquid cosmetic (eyeliner) having the composition shown in Tables 1 and 2 was produced and evaluated for color intensity, storage stability, adhesion, and softness. The results are shown in Tables 1 and 2.

[0037] (Manufacturing method) (Step 1) Components (D), (E) and a portion of purified water were added to component (A) to prepare a black pigment slurry. (Step 2) The remaining amounts of components (D) and (E) and a portion of 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 ingredients to prepare a water-based liquid cosmetic preparation, which was then filled into a bellows-type brush pen to obtain an eyeliner.

[0038] (Evaluation method) (1) Color Intensity: The table shows the number of people who judged that each aqueous liquid cosmetic composition gave good (dark) color when applied around the eyes by five expert evaluators.

[0039] (2) Storage stability: Each aqueous liquid cosmetic was used to draw five lines, each 2 mm wide and 3 cm long, on paper (copy paper, plain paper). Each aqueous cosmetic was stored in a thermostatic chamber at 45°C for one month. The color drawn before storage was compared with the color drawn after storage, and the color change was evaluated according to the following criteria. A: Equivalent. B: There is some change. C: There is a change. D: Fail.

[0040] (3) Fit: The table shows the number of people who judged that each aqueous liquid cosmetic composition adhered well to the skin around the eyes when applied by five expert evaluators.

[0041] (4)Softness: Each aqueous liquid cosmetic was applied to a polyethylene sheet and dried to create a film (film shape: width 5mm, length 5cm, thickness 50μm. Drying conditions: 30℃ for 6 hours). The film was repeatedly folded while attached to the polyethylene sheet, and the number of times it was folded until it cracked was measured. The results are shown as the average value of 5 films.

[0042] [Table 1]

[0043] [Table 2]

[0044] *1: Ako Kasei Co., Ltd., TILACK D, *2:DK BLACK No.2, manufactured by Daito Kasei Kogyo Co., Ltd. *3:TAROX synthetic iron oxide BL-100P, manufactured by Titanium Industries Co., Ltd. *4: SIH-2 RED No.211P (treatment amount 2%), manufactured by Daito Kasei Kogyo Co., Ltd. *5: TAROX synthetic iron oxide R-516P, manufactured by Titanium Industries Co., Ltd. *6: Yodosol GH256F (particle size 20-40 nm), manufactured by Nouryon Japan Co., Ltd. *7: Daito Chemical Industry Co., Ltd., Daitosol 5000AD (particle size 130-150 nm), *8: Daito Chemical Industry Co., Ltd., Daitosol 5000STY (particle size 110-140 nm), *9: ISP PVP K-90

Claims

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

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

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

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

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