JP2015199702A - artificial nail coating composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an artificial nail coating composition which sufficiently covers hue and minute unevenness of the artificial nail, has no harmful effect on the artificial nail, film strength and water resistance not to cause a hindrance to daily life, and can easily remove the artificial nail coating composition.SOLUTION: An artificial nail coating composition contains following components (A)-(D): (A) a polymer emulsion forming a water insoluble membrane; (B) one or two selected from a polyvinyl alcohol and a polyvinyl pyrrolidone; (C) powder; and (D) water.

Description

  The present invention is an artificial nail coating composition for concealing the color and fine irregularities of an artificial nail such as a gel nail, specifically, a polymer emulsion that forms a water-insoluble film, polyvinyl alcohol, polyvinyl alcohol The composition for artificial nail coating containing one or more selected from pyrrolidone, powder, and water, more specifically, forming a uniform film when applied on the artificial nail, The present invention relates to a composition for coating an artificial nail that is excellent in strength, hiding power, and water resistance, and can be easily removed with hot water, and does not change the state of the artificial nail during and after coating.

  Conventionally, nail polishes have been mainly solvent type containing organic solvent such as ethyl acetate or butyl acetate and nitrocellulose as a film forming agent. However, this type of nail polish often started to peel off or crack after a few days after application, and the makeup lasting was insufficient. Therefore, in recent years, an increasing number of people are using sculptures using resins that are cured by a polymerization reaction, gel nails using resins that are cured by UV irradiation, and the like as artificial nails that are extremely excellent in film strength and makeup durability. (For example, refer to Patent Document 1). Since these artificial nails require advanced technology to be cured after being shaped on the nail, it is common to have a professional manicurist perform the treatment, and it is attached to the nail for about one month with a single treatment. It is possible to live as it is. In addition, rhinestones imitating jewels and pearls are hardened after being embedded in resin rather than being attached with an adhesive, so the rhinestones are not removed, and the design and aesthetics are also excellent. It is a feature.

  However, these artificial nails are made of a strong acrylic resin and so on, so that they have a very good makeup. On the other hand, they are not easy to remove, and when removing them, a polishing machine or the like is used in addition to an organic solvent such as acetone. It is common to have a professional remove it, and if it is removed frequently, the nail will be burdened, so once applied, it will basically remain worn for 2 weeks to 1 month. Therefore, it is difficult to frequently change the color and the design, and it is difficult to easily remove it when it is desired to remove it. Therefore, when you want to change the color only for one day according to TPO, apply a commonly used solvent-type beauty nail material containing nitrocellulose from the top and temporarily color and design the artificial nail. I was hiding. However, the solvent type contains an organic solvent, and it is necessary to use a nail enamel remover that contains an organic solvent such as acetone when removing it. It has been a problem that it penetrates and the strength becomes weak and the surface becomes clouded. In addition, since the nitrocellulose film is hard and thin, it is difficult to hide the rhinestones attached to the artificial nails by the film thickness, and the film tends to be lost due to the raised parts of the rhinestones.

  On the other hand, a water-based beauty nail that does not contain an organic solvent in addition to the solvent-type beauty nail has also been developed. For example, a water-based beauty nail containing two types of acrylic polymer emulsion (see, for example, Patent Document 2). In addition, there are a resin that is insoluble in water and soluble in alkaline water, and an aqueous beauty nail material containing an acrylic polymer emulsion (see, for example, Patent Document 3). These water-based nail polishes were developed to improve the flammability, solvent odor, effects on the human body, adverse effects on nails, etc., which were problems with solvent types. It can be used as a product and is originally intended to be applied directly to the nail, but it does not adversely affect the artificial nail when it is applied not only to the nail but also to the artificial nail. Further, studies have been made to increase the removability of water-based beautiful nail preparations. For example, aqueous nail enamel having improved removability with a general nail enamel remover by combining an inorganic powder with an emulsion polymer (see Patent Document 4) And nail polish remover with water using a water-based nail enamel remover containing a specific oxyalkylene glycol derivative (see Patent Document 5) and vinyl acetate / vinylpyrrolidone copolymer as a resin component for film formation (Refer patent document 6) The water-based beautiful nail material (refer patent document 7) etc. which gave peelability by mix | blending a specific triglyceride etc. are proposed.

JP 2011-121867 A JP-A-4-103513 JP-A-9-71511 Japanese Patent Laid-Open No. 10-36225 Japanese Patent Laid-Open No. 6-56631 JP-A-9-95423 JP 2001-31527 A

  However, water-based nail polishes such as Patent Documents 2 and 3 cannot be removed with water because they form a resin film made of an acrylic emulsion polymer or the like, and general nail enamel mainly composed of an organic solvent such as acetone. It was not possible to remove even with a remover, and the difficulty of removal was a problem. The aqueous nail enamel of Patent Document 4 is not affected by the solvent on the artificial nail during application, but the organic nail contained in the nail enamel remover causes problems such as cloudiness on the artificial nail during removal. Further, when removing with the water-based nail enamel remover of Patent Document 5, there is no problem with the artificial nail, but there is a troublesome use of the dedicated remover. Furthermore, the water-removable nail polish liquid of Patent Document 6 has no effect on the artificial nail both during application and removal, but it is not water resistant, so there is a high possibility that it will fall due to daily living activities such as hand washing. There is only a very short makeup. In addition, the water-based beauty nail material that forms the peelable film as in Patent Document 7 can be easily peeled off with the nail of the hand, so it can withstand the friction of the cloth, etc., but the nail was struck or caught on a hard object The problem was that it peeled off.

  In this way, the artificial nail's color and design are fully concealed in accordance with TPO, but there is no adverse effect on the artificial nail, it has film strength and water resistance that can withstand daily life, and can be easily removed The development of a nail coating composition has been desired.

  In view of such circumstances, the present inventor has eagerly studied to solve the above problems, and as a result, the artificial nail coating composition is water-based so that it does not adversely affect the artificial nail during and after application, and it can be dried. By using a polymer emulsion and a powder that later formed a strong film and formed a water-insoluble film having water resistance, the film strength and hiding power that could withstand daily life could be exhibited. However, the film of the polymer emulsion that forms a water-insoluble film is strong and difficult to remove. Therefore, by combining polyvinyl alcohol or polyvinylpyrrolidone, it is resistant to water. The present invention has been completed by finding that the film exhibits soft properties, facilitates removal of the film, and forms a uniform film with a polymer emulsion or powder that forms a water-insoluble film.

That is, the present invention includes the following components (A) to (D);
(A) A polymer emulsion that forms a water-insoluble film (B) One or more selected from polyvinyl alcohol and polyvinylpyrrolidone (C) Powder (D) An artificial nail coating composition containing water (D) is provided. Is.

  The artificial nail coating composition wherein the component (A) is one or more selected from an alkyl acrylate copolymer emulsion, an alkyl acrylate / vinyl acetate copolymer emulsion, and an alkyl acrylate / styrene copolymer emulsion It provides things.

  The artificial nail coating composition is provided in which the solid content of the component (A) and the mass ratio of the component (B) (solid content of the component (A) / component (B)) are 4 to 250.

The transparency of the artificial nail coating composition obtained by the following measurement method is less than 10.
Measuring method: A sample was applied with a doctor blade at a film thickness of 800 μm on a hiding power test paper (JIS K5101) having a white part and a black part, and air-dried at 20 ° C. for 15 minutes, and the black part was used as a back. The coating color is measured by measuring the L * a * b * value and the L * a * b * value when the white portion is the background. The color difference (ΔE) is obtained from the colorimetric values when the white portion is the background and the black portion is the background, and this color difference is used as the transparency.

  The artificial nail coating composition that can be removed with hot water at 42 ° C. is provided.

  The artificial nail coating composition does not contain an organic solvent.

  The present invention provides a composition for covering an artificial nail that can be removed without damaging the color and shape of the artificial nail.

  The artificial nail coating composition of the present invention can be easily removed with hot water, has no adverse effect on the artificial nail even when applied to the artificial nail, and has film strength and water resistance that can withstand daily life. However, it has sufficient hiding power and can hide the color and design of the artificial nail according to the TPO.

  The polymer emulsion forming the water-insoluble film of the component (A) in the present invention can be used without particular limitation as long as the film after drying becomes insoluble in water. Component (A) is an aqueous polymer emulsion in which a polymer is dispersed in the form of particles in an aqueous solvent such as water. As the aqueous solvent volatilizes, the polymer particles coalesce and fuse to form a film. Is formed.

  Examples of polymer emulsions that form such water-insoluble films include acrylic polymer emulsions obtained by polymerizing one or more monomers selected from derivatives such as acrylic acid, methacrylic acid, or alkyl esters thereof. . Specific monomers include acrylic acid, methyl acrylate, ethyl acrylate, acrylic amide, acrylic acid-n-propyl, acrylic acid-n-butyl, acrylic acid isobutyl, octyl acrylate, acrylic acid-2-ethylhexyl. N, N-dimethylaminoethyl acrylate, acrylonitrile, methacrylic acid, ethyl methacrylate, methacrylic acid amide, methacrylic acid-n-propyl, methacrylic acid-n-butyl, methacrylic acid isobutyl, methacrylic acid-2-ethylhexyl, methacrylic acid Examples include octyl, hydroxyethyl methacrylate, N, N-dimethylaminoethyl methacrylate and the like. Further, when the monomer is polymerized, styrene, vinyl acetate, silicone macromer, fluorine-based monomer, alkoxysilane unsaturated monomer or the like may be copolymerized. The method for producing these polymer emulsions is not particularly limited, and examples thereof include known methods such as a soap-free polymerization method using a reactive emulsifier and an aqueous medium heterogeneous polymerization method not containing an emulsifier.

  Examples of the polymer emulsion of component (A) include (meth) alkyl acrylate / styrene copolymer emulsion, alkyl acrylate / vinyl acetate copolymer emulsion, vinyl acetate / styrene copolymer emulsion, alkyl acrylate / acrylonitrile.・ Styrene copolymer emulsion, alkyl (meth) acrylate / vinyl pyrrolidone copolymer emulsion, (meth) acrylic acid / (meth) alkyl acrylate copolymer emulsion, (meth) alkyl acrylate copolymer emulsion, silicone And polymer emulsions. Among these, an acrylic acrylate copolymer emulsion, an alkyl acrylate / vinyl acetate copolymer emulsion, an alkyl acrylate / styrene copolymer emulsion, or one or more selected from an acrylic resin mainly comprises an acrylic resin. It has good affinity with artificial nails, and is preferable in terms of water resistance, film strength, film uniformity, and the like.

  Examples of commercially available components (A) include YODOSOL GH800F (manufactured by Akzo Nobel, solid content of 45% by mass (hereinafter referred to as “%”)), YODOSOL GH810F (manufactured by Akzo Nobel, solid content of 46%). YODOSOL GH41F (manufactured by Akzo Nobel Corp., solid content 47%), vinylol 2140L (manufactured by Daido Kasei Kogyo Co., Ltd., solid content 43%), vinylol 1086WP (manufactured by Daido Kasei Kogyo Co., Ltd., solid content 40%), and the like.

  The content of the component (A) in the present invention is not particularly defined, but is preferably 9 to 25% in terms of solid content, more preferably 12 to 23%, and sufficient film strength within this range. Further, it is possible to impart hiding power due to water resistance, usability, and appropriate film thickness.

  As the component (B) polyvinyl alcohol and polyvinyl pyrrolidone in the present invention, any one can be used without particular limitation as long as it is usually used in cosmetics, and one or more kinds can be used as necessary. .

  The polyvinyl alcohol of component (B) in the present invention is commercially available in several grades depending on the difference in polymerization degree and saponification degree. The degree of polymerization is usually indicated by measuring the viscosity at 20 ° C. of a 4% strength by weight aqueous solution. Although the viscosity of the polyvinyl alcohol of the component (B) of the present invention is not particularly limited, it is preferably 1 to 70 mPa · s. On the other hand, the degree of saponification depends on the ratio of saponification of acetyl groups in polyvinyl acetate during the production of polyvinyl alcohol, and can be broadly divided into fully saponified types that have been almost completely saponified and partially saponified types that have left some acetyl groups. . In the present invention, any saponification type can be used, but partial saponification type polyvinyl alcohol is preferably used.

  As a commercial item of the polyvinyl alcohol of the component (B) in this invention, PVA-103, PVA-110, PVA-205, PVA-210, PVA-217, PVA-613, PVA-706, Kuraraypoval PVA124, Kuraraypoval Examples thereof include 224C (manufactured by Kuraray Co., Ltd.), PVA-EG25, PVA-EG40, PVA-GL05S, PVA-EG05 (manufactured by Nippon Gosei Co., Ltd.), and the like.

  The polyvinyl pyrrolidone as the component (B) in the present invention is commercially available with different average molecular weights, and any average molecular weight can be used in the present invention, but the average molecular weight is 10,000 or more and 1,000,000. The following are preferred. Examples of commercially available products of polyvinylpyrrolidone include LUVISKOL K90 POWDER, LUVISKOL K30 (manufactured by Badish) and the like.

  The content of the component (B) in the present invention is not particularly specified, but is preferably 0.1 to 2%, more preferably 0.15 to 1.5%, and this range is sufficient. Water resistance, ease of removal, and uniform film formation can be imparted.

  The solid content of component (A) and the content mass ratio of component (B) (solid content of component (A) / component (B)) are not particularly limited, but film-forming ability, usability, film strength, water resistance, From the viewpoint of ease of removal, the range of 4 to 250 is preferable, and 15 to 230 is more preferable. If it is in the range of 50 to 100, the balance between water resistance and ease of removal is more appropriate. preferable.

  The powder of component (C) in the present invention is particularly limited by the shape of a sphere, plate, needle or the like, the shape of fumes, fine particles, particle size such as pigment grade, the particle structure such as porous or nonporous, etc. Examples thereof include inorganic powders, glitter powders, organic powders, pigment powders, composite powders and the like. Specifically, titanium oxide, black titanium oxide, conger, ultramarine, bengara, yellow iron oxide, black iron oxide, zinc oxide, aluminum oxide, anhydrous silicic acid, magnesium oxide, zirconium oxide, magnesium carbonate, calcium carbonate, chromium oxide , Chromium hydroxide, carbon black, aluminum silicate, magnesium silicate, magnesium magnesium silicate, mica, synthetic mica, sericite, talc, kaolin, silicon carbide, barium sulfate, boron nitride and other inorganic powders, oxychloride Bright powders such as bismuth, titanium oxide coated mica, iron oxide coated mica, iron oxide coated mica titanium, organic pigment coated mica titanium, aluminum powder, nylon powder, polymethyl methacrylate powder, acrylonitrile-methacrylic acid copolymer powder , Vinyl chloride Den-methacrylic acid copolymer powder, polyethylene powder, polyethylene terephthalate powder, polystyrene powder, organopolysiloxane elastomer powder, polymethylsilsesquioxane powder, polyurethane powder, wool powder, silk powder, crystalline cellulose powder, N-acyl lysine Organic powders such as powders, organic tar pigments, pigment powders such as organic pigment lake pigments, fine titanium oxide coated mica titanium, fine zinc oxide coated mica titanium, barium sulfate coated mica titanium, titanium oxide-containing anhydrous silica Examples thereof include composite powders such as acid and zinc oxide-containing silicic anhydride, and one or more of these can be used. In addition, these powders may be used after being surface-treated with a generally known treating agent such as a fluorine compound, a silicone compound, or a surfactant.

  Among these powders, a powder having a high refractive index is preferable from the viewpoint of providing a hiding power, and specifically, a powder having a refractive index of 1.5 or more is preferable. The powders with high refractive index include titanium oxide, black titanium oxide, conger, ultramarine, bengara, yellow iron oxide, black iron oxide, zinc oxide, aluminum oxide, magnesium oxide, zirconium oxide, magnesium carbonate, calcium carbonate, oxidation Inorganic powders such as chromium, chromium hydroxide, carbon black, aluminum silicate, magnesium silicate, magnesium aluminum silicate, silicon carbide, barium sulfate, boron nitride, bismuth oxychloride, titanium oxide coated mica, iron oxide coated mica , Iron powder coated mica titanium, organic pigment coated mica titanium, aluminum powder and other glittering powders, organic tar pigments, organic pigment lake pigments and other pigment powders, particulate titanium oxide coated mica titanium, particulate zinc oxide Coated mica titanium, barium sulfate coated mica titanium, etc. And the like.

  The content of the component (C) in the present invention is not particularly specified, but is preferably 0.1 to 20%, more preferably 0.3 to 15%, and an appropriate hiding power within this range. Can be granted.

  As the water of component (D) in the present invention, one or more of deep sea water, hot spring water, etc. can be used in addition to purified water usually used in cosmetics.

  The content of component (D) in the present invention is not particularly limited, but is preferably 30% to 80%, and more preferably 35% to 75%. If it is this range, a drying rate and the viscosity of cosmetics will become moderate, and the usability can be provided.

  In the present invention, it is preferable to contain a monovalent lower alcohol since the drying speed is increased. Monovalent lower alcohols are not particularly limited as long as they are usually used in cosmetics, but specific examples include ethanol and isopropanol having 2 to 3 carbon atoms, with ethanol being particularly preferred. It is. In addition, the content of the monovalent lower alcohol in the present invention is not particularly defined, but when it is 2 to 10%, the artificial nail coating composition can form a uniform film without repelling on the artificial nail. Therefore, it is preferable.

  In the present invention, as long as the effects of the present invention are not impaired as necessary, in addition to the above-described components, components used in cosmetics and external preparations for skin, that is, oil agents, surfactants, metal soaps, gelling agents. Agents, alcohols, water-soluble polymers, film-forming agents, resins, antifoaming agents, plasticizers, UV protection agents, inclusion compounds, antibacterial agents, fragrances, deodorants, salts, pH adjusters, cooling agents, animals -Microbial-derived extracts, plant extracts, moisturizers, amino acids, vitamins, etc. can be added.

The product of the present invention is used to conceal the color and shape of the artificial nail, and preferably has a high concealing power. The lower the transparency obtained by the following measurement method, the higher the hiding power. The transparency of the product of the present invention is less than 10 and preferably less than 5. If the transparency is 10 or more, the color of the artificial nail can be seen through.
Measuring method: A sample was applied with a doctor blade at a film thickness of 800 μm on a hiding power test paper (JIS K5101) having a white part and a black part, and air-dried at 20 ° C. for 15 minutes, and the black part was used as a back. The coating color is measured by measuring the L * a * b * value and the L * a * b * value when the white portion is the background. The color difference (ΔE) is obtained from the colorimetric values when the white portion is the background and the black portion is the background, and this color difference is used as the transparency.
For the L * a * b * value, the L *, a *, and b * values were measured using a Nippon Denshoku color difference meter SE-2000, and the color difference (ΔE) was determined by the following equation.
ΔE = ((L ₁ * −L ₂ *) ² + (a ₁ * −a ₂ *) ² + (b ₁ * −b ₂ *) ² ) ^0.5
(Subscripts 1 and 2 mean the values when the back part is a white part and a black part, respectively.)

  The product of the present invention can be removed with hot water of about 40 ° C. and can be removed without damaging the color and shape of the artificial nail. The product of the present invention preferably contains no organic solvent in order to prevent damage to the artificial nail.

  The color tone of the product of the present invention is not particularly limited, but it is preferable to conceal an artificial nail having high aesthetics and decoration and to be familiar with a hand or a finger or a color close to the original nail color. Specifically, the Munsell color values are preferably in the range of hue 10.00P to 10.00Y, lightness 6.00 to 9.00, and saturation 1.00 to 10.00.

  The production method of the product of the present invention is not particularly limited and is prepared by a conventional method. For example, the said component (A), (B), (C) and (D) and the method of adding an arbitrary component as needed and mixing this are mentioned.

  The form of the product of the present invention is not particularly limited and may be liquid, semi-solid, solid or the like, but liquid is preferable in terms of ease of application. The dosage form of the present invention is not particularly limited as long as the outer phase is an aqueous system, and any of an aqueous system, a solubilization system, an oil-in-water system, and the like may be used.

  EXAMPLES Hereinafter, although an Example, a comparative example, and a manufacture example are given and this invention is demonstrated further more concretely, the scope of the present invention is not limited to these.

Examples 1 to 7 and Comparative Examples 1 to 5: Composition for artificial nail coating The composition for artificial nail coating having the composition shown in Table 1 below was prepared by the following production method, and “water resistance” and “easily dropped with hot water” For each of the following items: "Sensity", "Film strength", "Uniformity of film upon application", "No change in artificial nail after removal", and "Hiding power (panel evaluation, side color value evaluation)" The results are shown in Table 1, together with the results. In Comparative Example 5, the solvent-based nail enamel of Production Example 1 and the solvent-based nail enamel remover of Production Example 2 were used.

(Production method)
A: Components 1 to 8 are mixed and dispersed uniformly.
B: After components 9 to 19 are mixed, A is added and mixed.
C: B was degassed and filled into a container to obtain a composition for artificial nail coating.

* 1 NIKKOL BC-20TX (manufactured by Nikko Chemicals)
* 2 GRINSTED XANTHAN CLEAR 80 (DANISCO)
* 3 YODOSOL GH800F (manufactured by Akzo Nobel, solid content 45%)
* 4 Binizole 2140L (Daido Chemical Industries, solid content 43%)
* 5 PEG-1500 (manufactured by Toho Chemical Industry Co., Ltd.)
* 6 Kuraray Poval 224C (Kuraray)
* 7 LUVISKOL K90 POWDER (made by Badish)
* 8 ANTARA430 (manufactured by IPS Japan, solid content 40%)

<Production Example 1: Solvent-based nail enamel used in Comparative Example 5>
(Ingredient) (%)
1. Residual amount of butyl acetate Ethyl acetate 15
3. Nitrocellulose 13
4). Isopropanol 5
5. Acetyltributyl citrate 3
6). (Alkyl acrylate / dimethicone) copolymer * 9 5
7). dl-Camphor 3
8). Titanium oxide 2
9. Black iron oxide 0.1
10. Yellow iron oxide 0.7
11. Bengala 0.2
12 Sericite 1.5
13. 2-methoxyhexyl paramethoxycinnamate 0.5
14 Diethylaminohydroxybenzoyl 0.2
Hexyl benzoate * 10
15. Organically modified bentonite * 11 1
16. Silicic anhydride * 12 0.5
17. Mica titanium 3
18. Polyethylene terephthalate / polyolefin laminated resin 0.5
19. Malic acid 0.01
20. Dimethicone 0.1
21. Fragrance 0.05
* 9 Silicon KP-541 (Shin-Etsu Chemical Co., Ltd. solid content: 60%)
* 10 UVINUL A PLUS (BASF)
* 11 Benton 27 (manufactured by NL Industry)
* 12 Aerosil 300 (Nippon Aerosil)
(Production method)
A: Components 1 to 21 are mixed and uniformly dispersed.
B: A was degassed and filled in a container to obtain a solvent-based nail enamel.

<Production Example 2: Solvent-based nail enamel remover used in Comparative Example 5>
(Ingredient) (%)
1. Acetone 70
2. Glyceryl tri-2-ethylhexanoate 5
3. Olive oil 0.05
4). 4. Purified water residue Ethanol 10
6). Fragrance 0.01
(Production method)
A: Components 1 to 6 are mixed and uniformly dispersed.
B: A was degassed and filled into a container to obtain a solvent-based nail enamel remover.

[Evaluation item 1: Water resistance]
To 20 female panels with makeup history of more than 10 years with acrylic resin artificial nails (gel nails treated at a general nail salon) with a hemispherical artificial pearl with a diameter of 1.5 mm per finger, Apply each sample twice on an artificial nail, wash your hands with running water for about 10 seconds, and then evaluate the “water resistance” of the cosmetic film according to the following (b) 5-step absolute evaluation criteria. The average value of the scores of all the panels was determined according to the following (b) four-step criteria.
(A) Five-step absolute evaluation criteria (score): (evaluation)
5 points: The decorative film does not change at all.
4 points: When the film is wet, there is a slight change in the makeup film, but after drying, the makeup film is restored.
3 points: When the film is wet, there is a change such as wiping of the decorative film, and after a while, there is a slight change such that a part of the decorative film is peeled off.
Two points: When wet, there is a change such as a dazzling of the decorative film, and after a while, the decorative film peels off and a change such as a color change occurs.
1 point: As soon as it gets wet with water, there are significant changes such as peeling of the cosmetic film and color change.
(B) Four-step criteria (average score): (Judgment)
Average score 4.5 or more and 5 or less: ◎
Average score of 3.5 or more and less than 4.5: ○
Average score of 2.5 or more and less than 3.5:
Average score of 1 or more and less than 2.5: ×

[Evaluation item 2: Ease of dropping with hot water]
To 20 female panels with makeup history of more than 10 years with acrylic resin artificial nails (gel nails treated at a general nail salon) with a hemispherical artificial pearl with a diameter of 1.5 mm per finger, Apply each sample twice on the artificial nail, use it with 42 ° C hot water, peel off the cosmetic film with your hands and nails, Ratings were given according to the following (c) 5-step absolute evaluation criteria, and the average score of all panels was determined according to the following (d) 4-step criteria.
(C) 5-level absolute evaluation criteria (score): (evaluation)
5 points: A single film is peeled off or melted by rubbing with a finger in hot water.
4 points: By gently rubbing with a finger in hot water, it gradually peels off and falls.
3 points: By applying force to the nails in hot water, the part where the force was applied falls.
2 points: Even if the nail is rubbed in hot water, it cannot be completely removed and part of it remains on the artificial nail.
1 point: Cannot be dropped in hot water.
(D) Four-step criteria (average score): (Judgment)
Average score 4.5 or more and 5 or less: ◎
Average score of 3.5 or more and less than 4.5: ○
Average score of 2.5 or more and less than 3.5:
Average score of 1 or more and less than 2.5: ×

[Evaluation Item 3: Film Strength]
To 20 female panels with makeup history of more than 10 years with acrylic resin artificial nails (gel nails treated at a general nail salon) with a hemispherical artificial pearl with a diameter of 1.5 mm per finger, Apply each sample twice on the artificial nail and use it as usual for 8 hours during the day. Then, the “film strength” is scored according to the following (e) 5-step absolute evaluation criteria, The average value of the scores of all the panels was determined according to the following (f) 4-step criteria.
(E) 5-step absolute evaluation criteria (score): (evaluation)
5 points: The decorative film is not changed at all.
4 points: Slight cracks and distortions are generated on the surface of the decorative film.
3 points: Part of the decorative film is chipped, cracked, peeled off, etc.
2 points: Chipping, cracking, peeling, etc. occur on the wide surface of the decorative film.
1 point: No makeup film remains.
(F) Four-step criteria (average score): (Judgment)
Average score 4.5 or more and 5 or less: ◎
Average score of 3.5 or more and less than 4.5: ○
Average score of 2.5 or more and less than 3.5:
Average score of 1 or more and less than 2.5: ×

[Evaluation item 4: Uniformity of film during application]
To 20 female panels with makeup history of more than 10 years with acrylic resin artificial nails (gel nails treated at a general nail salon) with a hemispherical artificial pearl with a diameter of 1.5 mm per finger, Each sample is applied twice on an artificial nail and used, and the “uniformity of the film at the time of application” is scored according to the following (g) 5-step absolute evaluation criteria. The average value was determined according to the following (h) 4-step criteria.
(G) 5-level absolute evaluation criteria (score): (evaluation)
5 points: There is no stripe unevenness, film loss, color unevenness, unevenness, etc., and it is finished to a uniform surface by coating once.
4 points: There are slight stripe unevenness, film loss, color unevenness, unevenness, etc. once applied, but a uniform surface is obtained by applying twice.
3 points: Even if applied twice, there are slight stripe unevenness, film loss, color unevenness, unevenness, etc., but they are slight.
Two points: Even when applied twice, uneven stripes, missing films, uneven colors, irregularities, etc. are conspicuous.
1 point: Even if applied twice, no film is formed.
(H) 4-step criteria (average score): (judgement)
Average score 4.5 or more and 5 or less: ◎
Average score of 3.5 or more and less than 4.5: ○
Average score of 2.5 or more and less than 3.5:
Average score of 1 or more and less than 2.5: ×

[Evaluation item 5: No change in artificial nail after removal]
To 20 female panels with makeup history of more than 10 years with acrylic resin artificial nails (gel nails treated at a general nail salon) with a hemispherical artificial pearl with a diameter of 1.5 mm per finger, Apply each sample twice on the artificial nail and use it after drying. If it does not fall with 42 ℃ hot water or hot water, have it removed using a nail enamel remover or file. Regarding “no change in artificial nail”, a score was given according to the following (l) 3-step absolute evaluation criteria, and the average value of the scores of all the panels was determined according to the following (4) 4-step criteria.
(R) Three-stage absolute evaluation criteria (score): (Evaluation)
3 points: No change in the artificial nail.
2 points: The artificial nail is slightly cloudy or scratched.
1 point: The artificial nail is clouded or partially melted.
(Nu) 4-step criteria (average score): (Judgment)
Average score 2.5 to 3: ◎
Above average score 2 and less than 2.5: ○
Average score 1.5 or more and 2 or less: △
Average score of 1 to less than 1.5: ×

[Evaluation item 6: Hiding power (panel evaluation)]
To 20 female panels with makeup history of more than 10 years with acrylic resin artificial nails (gel nails treated at a general nail salon) with a hemispherical artificial pearl with a diameter of 1.5 mm per finger, Each sample is painted twice on the artificial nail and used, and the “hiding power” is scored according to the following (Le) three-stage absolute evaluation criteria. (Wo) Judgment was made according to the 4-step criteria (le) 3-step absolute evaluation criteria (score):
3 points: The unevenness and color of the artificial nail are concealed.
2 points: The unevenness and color of the artificial nail are slightly transparent.
1 point: It is transparent so that the unevenness and color of the artificial nail can be recognized.
(Wo) 4-step criteria (average score): (Judgment)
Average score 2.5 to 3: ◎
Above average score 2 and less than 2.5: ○
Average score 1.5 or more and 2 or less: △
Average score of 1 to less than 1.5: ×

[Evaluation Item 7: Hiding power (side color value evaluation)]
L * a when a sample was applied to a hiding power test paper (JIS K5101) having a white part and a black part with a doctor blade at a film thickness of 800 mm and air-dried at 20 ° C. for 15 minutes. The coating color was measured by measuring the * b * value and the L * a * b * value when the white portion was the back. The color difference (ΔE) was determined from the colorimetric values when the white portion was the background and the black portion was the background, and the hiding power was determined according to the following four-step criteria using this color difference as the transparency. For the L * a * b * values, the L *, a *, and b * values were measured using a Nippon Denshoku color difference meter SE-2000, and the color difference (ΔE) was determined by the following equation.
ΔE = ((L ₁ * −L ₂ *) ² + (a ₁ * −a ₂ *) ² + (b ₁ * −b ₂ *) ² ) ^0.5
(Subscripts 1 and 2 mean the values when the back part is a white part and a black part, respectively.)
Note that the lower the transparency and the smaller the color difference, the higher the hiding power.
(W) 4-step criteria (evaluation): (judgment)
Color difference is less than 5: ◎
Color difference is 5 or more and less than 10: ○
Color difference is 10 or more and less than 15:
Color difference is 15 or more: ×

  As is apparent from the results in Table 1, the compositions for coating artificial nail of Examples 1 to 7 of the present invention are “water resistance”, “easy to drop off with hot water”, “film strength”, “film during application” In all of “uniformity”, “no change in artificial nail after removal”, and “hiding power (panel evaluation, side color value evaluation)”. On the other hand, since Comparative Example 1 containing no component (A) cannot form a sufficient film, it is satisfactory in “water resistance”, “film strength”, “film uniformity during coating”, and “hiding power”. I couldn't get anything. In addition, Comparative Example 2 using polyethylene glycol that forms a water-soluble film instead of component (A) flows away when washing hands because of lack of water resistance, and the film strength is also weak and uniform because it does not dry easily. It was difficult to apply to the surface, and a satisfactory one was not obtained. Next, the comparative example 3 which does not contain the component (B) is difficult to remove with hot water, and satisfactory in “easy to drop with hot water” was not obtained. Also, since it became difficult to remove, it was necessary to rub with a file, etc., so that the artificial nail was scratched after removal. Further, in Comparative Example 4 containing a (styrene / vinyl pyrrolidone) copolymer instead of the component (B), as soon as it was put on water, the film became white and inferior in water resistance. Further, in Comparative Example 5 using a solvent-based nail enamel, it was difficult to remove with hot water, and satisfactory results were not obtained in “easy removal with hot water”. In addition, since it was necessary to use a solvent-based nail enamel remover when removing the film, the organic solvent contained in the solvent-based nail enamel and the solvent-based nail enamel remover penetrates into the artificial nail, and some artificial nail Melted or clouded, and the condition of the artificial nail was changed, and a satisfactory one was not obtained.

Example 8: Artificial nail coating composition An artificial nail coating composition having the following composition was prepared.
(Ingredient) (%)
1. Alkyl acrylate / styrene copolymer emulsion * 13 10
2. Alkyl acrylate copolymer emulsion * 3 30
3. Polyvinyl alcohol * 14 0.2
4). Polyvinylpyrrolidone * 15 0.2
5. Purified water residue 6. Ethanol 5
7). Methylparaben 0.2
8.1,3-Butylene glycol 8
9. Dipropylene glycol 2
10. Titanium oxide 2.5
11. Black iron oxide 0.3
12 Bengala 0.3
13. Red 226 0.01
14 Yellow No. 4 0.02
15. Gunjo 0.05
16. Titanium oxide coated mica 2
17. Locust bean gum * 16 0.25
18. Acrylic acid / alkyl methacrylate (C10-30) copolymer
* 17 0.05
19. Triethanolamine 0.1
20. Soy lecithin 0.5
21. Olive oil 0.01
22. Rose extract 0.01
23. Peach extract 0.01
24. Apple extract 0.01
25. Macadamia nut oil 0.01
26. Yokuinin extract 0.01
27. Perfume 0.02
* 13 YODOSOL GH41F (manufactured by Akzo Nobel, solid content 47%)
* 14 Gohsenol EG-05P (Nippon Gosei Co., Ltd.)
* 15 LUVISKOL K30 (made by Badish)
* 16 GENU VISCO TYPE RL-200J (CP Kelco)
* 17 CARBOPOL 1342 (manufactured by LUBRIZOL ADVANCED MATERIALS)
(Production method)
A: Components 1 to 27 are mixed and dispersed uniformly.
B: A was degassed and filled into a container to obtain a composition for covering an artificial nail.

  The composition for artificial nail coating obtained in Example 8 is “water resistance”, “easy to drop off with hot water”, “film strength”, “uniformity of film upon application”, “artificial nail after removal” The composition for artificial nail coating was excellent in all of “No change in” and “Hiding power”.

Example 9: Artificial nail coating composition An artificial nail coating composition having the following composition was prepared.
(Ingredient) (%)
1. Alkyl acrylate / vinyl acetate copolymer emulsion * 4 5
2. Alkyl acrylate copolymer emulsion * 3 20
3. Alkyl acrylate copolymer emulsion * 18 10
4). Alkyl acrylate copolymer emulsion * 19 5
5. Polyvinyl alcohol * 6 0.5
6). Purified water residue 7. Isopropanol 3
8). Ethanol 4
9. Fenoshi ethanol 0.2
10.1,3-butylene glycol 8
11. Titanium oxide 2.5
12 Yellow iron oxide 0.3
13. Bengala 1
14 Zinc oxide 0.01
15. Talc 0.5
16. Titanium oxide coated synthetic mica 0.05
17. Silicic anhydride 0.1
18. Xanthan gum * 2 0.25
19. Sorbitan sesquioleate 0.5
20. Tocopherol acetate 0.01
21. Squalane 0.01
22. Octyl methoxycinnamate 0.5
23. L-Menthol 0.01
24. Camphor 0.01
25. Peppermint extract 0.01
26. Lavender extract 0.01
27. Polyethylene powder * 20 0.01
28. Polyethylene terephthalate powder 0.01
29. Diglyceryl diisostearate 0.01
30. Diglyceryl triisostearate 0.005
31. Diisostearyl malate 0.005
32. Liquid paraffin * 21 0.005
33.2 Cetyl 2-ethylhexanoate 0.005
34. Glycosyl trehalose / hydrogenated starch degradation product aqueous solution * 22 0.01
35. Synthetic phlogopite * 23 0.01
36. Decamethylcyclopentasiloxane 0.01
* 18 YODOSOL GH810F (manufactured by Akzo Nobel, solid content 46%)
* 19 Binizole 1086WP (Daido Chemical Industries, solid content 40%)
* 20 Miperon PM-200 (Mitsui Chemicals)
* 21 DRAKEOL 600 MIN OIL USP (manufactured by Penleco)
* 22 TORNARE (manufactured by Hayashibara; glycosyl trehalose content 47%)
* 23 PDM-40L (Topy Industries, Ltd .; average particle size 35 to 45 μm)
(Production method)
A: Components 1 to 36 are mixed and dispersed uniformly.
B: A was degassed and filled into a container to obtain a composition for covering an artificial nail.

The composition for artificial nail coating obtained in Example 9 is “water resistance”, “easy to drop with hot water”, “film strength”, “uniformity of film upon application”, “artificial nail after removal” The composition for artificial nail coating was excellent in all of “No change in” and “Hiding power”.

Claims (7)

The following components (A) to (D);
(A) Polymer emulsion forming a water-insoluble film (B) One or more selected from polyvinyl alcohol and polyvinylpyrrolidone (C) Powder (D) Composition for artificial nail coating containing water (D)   2. The component (A) is one or more selected from an alkyl acrylate copolymer emulsion, an alkyl acrylate / vinyl acetate copolymer emulsion, and an alkyl acrylate / styrene copolymer emulsion. An artificial nail coating composition.   The composition for artificial nail coating according to claim 1 or 2, wherein the solid content of component (A) and the content mass ratio of component (B) (solid content of component (A) / component (B)) are 4 to 250. . The composition for artificial nail coating according to any one of claims 1 to 3, wherein the transparency obtained by the following measurement method is less than 10.
Measuring method: A sample was applied with a doctor blade at a film thickness of 800 μm on a hiding power test paper (JIS K5101) having a white part and a black part, and air-dried at 20 ° C. for 15 minutes, and the black part was used as a back. The coating color is measured by measuring the L * a * b * value and the L * a * b * value when the white portion is the background. The color difference (ΔE) is obtained from the colorimetric values when the white portion is the background and the black portion is the background, and this color difference is used as the transparency.   The composition for artificial nail coating according to any one of claims 1 to 4, which can be removed with hot water at 42 ° C.   The composition for artificial nail coating according to any one of claims 1 to 5, which does not contain an organic solvent.   The composition for artificial nail coating according to any one of claims 1 to 6, which can be removed without damaging the color and shape of the artificial nail.