Biodegradable nail tips, nail polish and nail polish remover

Abstract

To provide a biodegradable nail tip that is mainly made from biodegradable plastic in consideration of an environmental load and, especially, has excellent strength and wearing feeling on a finger tip.SOLUTION: Biomass raw material for biodegradable plastic such as polylactic acid and cellulose acetate is blended with cellulose nanofiber, the cellulose nanofiber manufactured using a manufacturing method including the steps of: applying hydrothermal treatment to cellulose raw material to obtain swollen cellulose raw material; cracking the swollen cellulose raw material to obtain pulp; and applying chemical treatment to the pulp with acid or alkali to obtain the cellulose nanofiber.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a nail tip made using a biodegradable composite material in which strength and biodegradability are enhanced by blending cellulose nanofibers with a biodegradable resin. Specifically, the present invention provides a biodegradable nail tip. The present invention also provides a biodegradable nail color and nail polish remover for decorating the biodegradable nail tip. [Background technology]

[0002] Nail art, which involves decorating one's own fingernails and toenails (natural nails), is becoming popular. While artificial nails can be formed directly on natural nails using chemically polymerizable resin compositions (sculptures) or photopolymerizable resin composition gels containing synthetic resins such as (meth)acrylic resins and (meth)acrylic-containing urethane resins, this requires advanced shaping techniques and places a great strain on the nails. In recent years, a technique has become common in which artificial resin nails (nail tips) are attached to natural nails and then decorated by painting, applying stones or glitter, or other decorations. By using nail tips, an increasing number of people are doing their own nail art, rather than simply having nail art done by professionals at salons. Therefore, demand for nail tips has been increasing in recent years.

[0003] Nail tips are made from synthetic resin (plastic), so as demand increases, the amount of waste increases, raising concerns about the burden on the environment.

[0004] To prevent environmental pollution caused by plastic waste, the "3R Movement"—reducing, reusing, and recycling plastic—is being promoted worldwide. Plastics are being collected and separated for reuse and recycling. Collected plastic waste was previously exported to China and Southeast Asia, but these countries have banned the import of plastic waste, resulting in a backlog of plastic waste in Japan. Marine litter, in particular, has become a growing concern in recent years. When plastic waste flows into the ocean, it not only remains adrift but also breaks down into microplastics less than 1 mm in size over long distances and long periods of time, creating a major problem by disrupting ecosystems. Collected plastic waste is often disposed of in landfills, but floods can also result in it flowing into rivers and eventually into the ocean. According to a 2010 estimate, the amount of plastic waste flowing from land to the ocean in Japan was between 20,000 and 60,000 tons per year (Non-Patent Document 1). Reducing plastic usage is a powerful solution, but it is not ideal as we cannot reduce usage to zero in modern society.

[0005] For this reason, various biodegradable plastics have been developed. Biodegradable plastics have the property of being decomposed by microorganisms and ultimately turning into carbon dioxide and water. Examples of biodegradable plastics include polylactic acid (PLA), polycaprolactone, polyhydroxyalkanoate (PHA), polybutylene succinate, copolymers of polybutylene adipate and terephthalate, polyglycolic acid, modified polyvinyl alcohol, and casein, and starch-derived biodegradable plastics have also been developed (e.g., Non-Patent Document 2).

[0006] Biodegradable plastics are expected to reduce environmental pollution, but they have the drawback of low strength. Therefore, research is progressing on composite materials that incorporate plant-derived biomass in order to increase strength without impairing biodegradability (see, for example, Patent Documents 1 and 2). Furthermore, in order to improve the strength of biomass / biodegradable resin composite materials, attempts are being made to improve the compatibility at the interface between the different phases of biomass and biodegradable resin (see, for example, Patent Document 3). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-160034 [Patent Document 2] Japanese Patent Application Laid-Open No. 2002-069303 [Patent Document 3] Japanese Patent Application Publication No. 2018-100312 [Patent Document 4] Japanese Patent Application Laid-Open No. 2008-001728 [Patent Document 5] Japanese Patent Application Laid-Open No. 2010-235679 [Non-patent literature]

[0008] [Non-Patent Document 1] JR Jambeck et al., "Plastic waste inputs from land into the ocean; Science 13 Feb. 2015, p.768 [Non-patent document 2] Du, Yicheng et al., Fabrication and characterization of fully biodegradable natural fiber-reinforced poly(lactic acid) composites, Composite Pat B: Engineering, v.56, pp. 717-723 Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention aims to provide a biodegradable nail tip that is made primarily of biodegradable plastic in consideration of environmental impact and that is particularly strong and comfortable to wear on the fingertips. It is also an object of the present invention to provide a nail color and nail polish remover for decorating the biodegradable nail tip. [Means for solving the problem]

[0010] In the present invention, nail tips (artificial nails) are manufactured using a biodegradable resin composition containing cellulose nanofibers as a material for increasing the strength of biodegradable plastics without impairing their biodegradability, and the material is primarily made of biodegradable plastics such as polylactic acid (PLA), polyhydroxyalkanoate (PHA), starch, and cellulose acetate.

[0011] The above-mentioned biodegradable resins such as polylactic acid (PLA), polyhydroxyalkanoate (PHA), and starch-based resins are produced from edible biomass materials such as potatoes, grains, sugarcane, and corn.

[0012] Cellulose acetate has long been known as a resin made from non-edible biomass materials. It is a semi-synthetic polymer obtained by esterifying the natural polymer cellulose with acetic acid. Because cellulose acetate itself does not have thermoplasticity, it must be plasticized by adding a plasticizer to be used as a resin. Dioctyl phthalate (DOP) and triacetin, which are highly compatible with cellulose acetate, are mainly used as plasticizers for cellulose acetate.

[0013] Cellulose nanofibers (CNFs) have attracted attention as a material for increasing the strength of biodegradable plastics without impairing their biodegradability. CNFs possess excellent physical properties, such as high elasticity, light weight, low stretchability, and high gas barrier properties. Furthermore, CNFs are produced from cellulose, a biomass material abundant in nature, and are carbon-neutral. Even when burned, they do not increase carbon dioxide emissions on Earth, and their production and disposal pose a small environmental burden. A commonly known method for producing CNFs with excellent properties involves chemically treating wood chips with an oxidizing agent or other agent to produce cellulose fibers, followed by mechanical processing using a homomixer or other device to refine the fibers (Patent Documents 4 and 5).

[0014] However, the CNFs produced by these conventional methods have the problem that the strength of the composite materials obtained by adding them to resins and the like is insufficient. The present inventors have discovered that CNFs obtained by directly hydrothermally treating cellulose raw materials such as wood chips and then chemically treating them improve the properties of composite materials with resin materials. This method allows for the effective use of cellulose materials that would previously have been discarded by using not only new wood but also waste wood, rice grains, kudzu, herbs such as Japanese pampas grass, and waste paper as raw materials for producing CNFs.

[0015] Therefore, in the present invention, we decided to use CNFs that we had already developed. The CNFs that can be used in the present invention are produced by a CNF production method that includes the steps of subjecting cellulosic raw materials, such as woody plants such as broad-leaved trees, coniferous trees, and bamboo, herbaceous plants such as rice ears, kudzu, and Japanese silver grass, and paper, to hydrothermal treatment to obtain a swollen cellulosic raw material, disintegrating the swollen cellulosic raw material to obtain pulp, and chemically treating the pulp with an acid or alkali to obtain cellulose nanofibers.

[0016] The nail tips manufactured using the biodegradable resin composition in which the CNF developed by the inventors was added to the above biodegradable plastic had sufficient strength and did not feel thick or heavy when attached to the natural nails. [Effects of the Invention]

[0017] The nail tip according to the present invention is produced using a biodegradable resin composition, and therefore has a small environmental impact when disposed of and is practical. DETAILED DESCRIPTION OF THE INVENTION

[0018] In a first aspect, the present invention provides a nail tip made of a biodegradable resin composition containing at least a biodegradable polymer selected from the group consisting of polylactic acid (PLA), a starch-based biodegradable resin, polycaprolactone, polyhydroxyalkanoate (PHA), polybutylene succinate, a copolymer of polybutylene adipate and terephthalate, polyglycolic acid, modified polyvinyl alcohol, casein, and cellulose acetate, and cellulose nanofibers.

[0019] The cellulose nanofibers that can be used in the present invention are cellulose nanofibers produced by a production method that includes, in this order, the steps of subjecting a cellulose raw material to hydrothermal treatment to obtain a swollen cellulose raw material, disintegrating the swollen cellulose raw material to obtain pulp, and chemically treating the pulp to obtain cellulose nanofibers (CNF). Examples of the cellulose raw material include any material from which natural cellulose can be extracted, such as woody plants selected from the group consisting of conifers, broad-leaved trees, and bamboo, or herbaceous plants selected from the group consisting of rice, kudzu, and Japanese pampas grass, as well as paper. These cellulose raw materials do not have to be new materials; they can also be used woody plants, herbaceous plants, or waste paper. Such cellulose raw materials are cut to a size appropriate for handling before being subjected to the process. In the present invention, the size of the cellulose raw material when subjected to the process is preferably in the range of 0.5 × 0.5 cm to 2.0 × 2.0 cm, more preferably 0.7 × 0.7 cm to 1.5 × 1.5 cm, and most preferably 0.8 × 0.8 cm to 1.2 × 1.2 cm. Raw materials larger than the above range are crushed into chips or powder.

[0020] In the hydrothermal treatment step of the CNF production method according to the present invention, the cellulose raw material is immersed in water and subjected to a subcritical to supercritical state under high-temperature and high-pressure conditions. More specifically, the hydrothermal treatment of the immersed chips is carried out for 60 to 180 minutes in a subcritical or supercritical state at a temperature of 400°C or less at 1 to 300 atmospheres, preferably 5 to 200°C at 2 to 250 atmospheres, more preferably 100 to 380°C at 25 to 100 atmospheres, and most preferably 150 to 250°C at 25 to 100 atmospheres. This hydrothermal treatment converts the cellulose raw material into a soft, swollen pulverized product.

[0021] In conventional CNF manufacturing methods, cellulose raw materials such as wood chips are first chemically treated with sulfuric acid or the like, followed by solvothermal treatment, but the manufacturing method of the present invention is characterized in that cellulose raw materials of a certain size, such as wood chips, are first hydrothermally treated, followed by chemical treatment with acid or alkali. When mixed with resin, the CNF manufactured by the manufacturing method of the present invention improves the physical properties of the composite material.

[0022] Solvothermal treatment is a treatment in which an organic solvent is used instead of the water used in hydrothermal treatment. Examples of such organic solvents include pyrrolidone-based solvents such as methanol, ethanol, propanol, and N-methylpyrrolidone, acetate-based solvents such as butyl acetate, glycol ether-based solvents such as diethylene glycol monomethyl ether, ketone-based solvents such as methyl ethyl ketone, aromatic solvents such as toluene and xylene, and hydrocarbon-based solvents such as paraffin.

[0023] Next, the resulting swollen cellulose raw material is subjected to a crushing process to loosen the fibers and turn it into pulp. This crushing process can be performed using a ball mill, disc mill, wet cutter mill, pressure homogenizer, etc. This crushing process turns the cellulose raw material into fibrous pulp of 0.05 to 0.5 mm.

[0024] Finally, the pulp obtained by disintegration is chemically treated. Examples of chemical treatments include acid treatment, alkali treatment, or a combination of these. Acid treatment can be performed using acids such as sulfuric acid, nitric acid, hydrochloric acid, and acetic acid. Alkali treatment can be performed using sodium hydroxide, sodium carbonate, potassium hydroxide, potassium carbonate, and hypochlorous acid. Chemical treatment can impart functional groups such as carboxyl groups, hydroxyl groups, ester groups, sulfo groups, ketone groups, and acetyl groups to the cellulose surface, improving its dispersion in the resin.

[0025] Alternatively, lignin can be added to the cellulose raw material before the hydrothermal treatment. Adding lignin hydrophobizes the surface of the resulting CNF (hydrophobized CNF). A composite material produced by mixing hydrophobized CNF with a resin has higher tensile strength than a composite material made of non-hydrophobized CNF without the addition of lignin, making this more preferable. The mixing ratio of the cellulose raw material to the lignin is preferably cellulose raw material / lignin (weight ratio) = 0.5 to 2, preferably 0.7 to 1.5, and more preferably 0.8 to 1.2.

[0026] In the first aspect of the present invention, various additives that can be added to resin compositions for injection molding can be further added as long as they do not impair the object of the present invention. The biodegradable resin composition of the present invention can contain additives such as lubricants, plasticizers, mold release agents, flow improvers, and combinations thereof.

[0027] Examples of lubricants that can be used in the present invention include fatty acid esters such as sucrose fatty acid esters and glycerin fatty acid esters; hydrocarbons such as liquid paraffin, paraffin wax, and synthetic polyethylene wax; fatty acids and higher alcohols such as stearic acid and stearyl alcohol; fatty acid amides such as stearic acid amide, oleic acid amide, and erucic acid amide, and alkylene fatty acid amides such as methylene bisstearic acid amide and ethylene bisstearic acid amide; metal soaps such as zinc stearate, calcium stearate, and magnesium stearate; and fatty acid esters of ester-based alcohols such as stearic acid monoglyceride and stearyl stearate. Among these, from the perspective of reducing environmental impact, naturally occurring ingredients such as sucrose fatty acid esters, glycerin fatty acid esters, stearic acid, stearyl alcohol, zinc stearate, calcium stearate, and magnesium stearate are preferred.

[0028] Examples of plasticizers for biodegradable polymers that can be used in the present invention include phthalates selected from dioctyl phthalate, diisononyl phthalate, diisodecyl phthalate, dibutyl phthalate, etc.; adipates selected from dioctyl adipate, diisononyl adipate, etc.; trimellitates selected from trioctyl trimellitate, etc.; polyesters of dibasic acids (adipic acid, sebacic acid, phthalic acid, etc.) and glycols (1,2-propanediol, butanediol, etc.); phosphates selected from tricresyl phosphate, etc.; citrates selected from acetyl tributyl citrate, triethyl citrate, tributyl citrate, etc.; epoxidized soybean oil, epoxidized These include epoxidized vegetable oils selected from linseed oil, etc.; mono- or diesters of dicarboxylic acids selected from sebacic acid esters, azelaic acid esters, maleic acid esters, etc.; esters of aromatic carboxylic acids selected from benzoic acid esters, etc.; fatty acid methyl esters selected from methyl myristate, methyl palmitate, methyl stearate, methyl oleate, animal fatty acid methyl esters, tallow fatty acid methyl esters, vegetable fatty acid methyl esters, soybean fatty acid methyl esters, linseed fatty acid methyl esters, etc.; and fatty acid butyl esters selected from butyl myristate, butyl palmitate, butyl stearate, butyl oleate, animal fatty acid butyl esters, tallow fatty acid butyl esters, vegetable fatty acids, soybean fatty acid butyl esters, linseed fatty acid butyl esters, etc. Among these, from the viewpoint of reducing environmental impact, natural product-derived components such as tricresyl phosphate, triethyl citrate, tributyl citrate, epoxidized soybean oil, epoxidized linseed oil, and sebacate esters are particularly preferred.

[0029] In particular, when cellulose acetate is used as the biodegradable polymer, examples of the plasticizer include rosin-based plasticizers such as rosin, rosin ester, and rosin glycerin ester; unsubstituted or substituted C 1~10It is preferable to use a plasticizer selected from the group consisting of ester-based plasticizers of alcohol with acetic acid, lactic acid, phthalic acid, citric acid, or phosphoric acid, glycerin-based plasticizers such as triacetin, diacetin, glycerin, polyglycerin, glycerin fatty acid esters, and polyglycerin fatty acid esters, polyester-based plasticizers, and sugar alcohol-based plasticizers such as sorbitol, sucrose fatty acid esters, and sorbitan fatty acid esters.

[0030] Examples of the mold release agent that can be used in the present invention include glycerin fatty acid esters, polyglycerin fatty acid esters, sorbitan fatty acid esters, propylene glycol fatty acid esters, and higher alcohol fatty acid esters.

[0031] In addition, inorganic fillers such as powders of carbonates, sulfates, silicates, phosphates, borates, oxides, or hydrates of calcium, magnesium, aluminum, titanium, zinc, etc., are also effective as lubricants, release agents, and flow improvers. Specific examples include calcium carbonate, silica, clay, feldspar, magnesium carbonate, zinc oxide, titanium oxide, silica, alumina, kaolin clay, talc, mica, wollastonite, aluminum hydroxide, magnesium hydroxide, aluminum silicate, magnesium silicate, calcium silicate, aluminum sulfate, magnesium sulfate, calcium sulfate, magnesium phosphate, barium sulfate, silica sand, zeolite, diatomaceous earth, sericite, shirasu, calcium sulfite, potassium titanate, bentonite, graphite, and ferrite.

[0032] The biodegradable resin composition of the present invention can be molded using a molding technique such as injection molding, and then cured to produce a nail tip.

[0033] In a second aspect, the present invention provides a biodegradable nail color comprising a biomass-derived resin selected from the group consisting of shellac resin, rosin resin, and cellulose acetate. The biodegradable nail color according to the present invention is useful for coloring the nail tip according to the present invention, and can be added with dyes, pigments, etc. that are commonly used to color nail tips, and can also contain glitter or holograms. Furthermore, if it is made clear without being colored with dyes or pigments, it can be used as a top coat. Furthermore, the biodegradable nail color according to the present invention can also be used as a nail polish to color one's own nails.

[0034] The biodegradable nail color according to the present invention can include a biomass-derived solvent selected from the group consisting of bioethanol, biobutanol, ethyl lactate, and ethyl acetate. In the biodegradable nail color according to the present invention, from the viewpoints of facilitating application to natural nails or nail tips and eliminating uneven drying, it is preferable that the content of bioalcohol, either bioethanol or biobutanol, in the biomass-derived solvent is 60 to 80 (w / w%).

[0035] In a third aspect, the present invention provides a nail polish remover comprising a biomass-derived solvent selected from the group consisting of bioethanol, biobutanol, ethyl lactate, and ethyl acetate. The nail polish remover according to the present invention is useful for removing the biodegradable nail color.

[0036] In a fourth aspect, the present invention provides a biodegradable nail care set comprising a nail tip made of the biodegradable resin composition of the present invention and the biodegradable nail color of the present invention. The biodegradable nail care set of the present invention can further comprise the nail polish remover of the present invention. [Example]

[0037] Preparation Example 1 [Manufacturing nail tips using polylactic acid] 1 kg of wood chips (1.0 x 1.0 cm) was mixed with 10 L of N-methylpyrrolidone and subjected to solvothermal treatment in an autoclave (200°C, 25 atm) for 2 hours. The resulting ground wood was then heat-treated in a 10% aqueous solution of hypochlorous acid at 90°C for 1 hour to prepare solvothermal / chemically treated CNF. 40 g of the CNF produced above was blended with 2000 g of polylactic acid (PLA; manufactured by Natureworks) and mixed using a twin-screw extruder to prepare a biodegradable resin composition containing 2 wt% CNF.

[0038] The biodegradable resin composition was injection molded into nail tips at 190°C using an injection molding machine with a clamping force of 50 t. It was possible to mold it to a thickness of 0.25 mm and 0.5 mm.

[0039] Preparation Example 2 [Manufacturing nail tips using cellulose acetate] A cellulose-based thermoplastic resin was prepared by adding 4 kg of triethyl citrate to 10 kg of cellulose acetate and kneading them in a twin-screw extruder. 40 g of the CNF produced above was blended with 2000 g of the cellulose-based thermoplastic resin prepared above and mixed using a twin-screw extruder to prepare a biodegradable resin composition containing 2 wt% CNF.

[0040] The biodegradable resin composition was injection molded into nail tips at 190°C using an injection molding machine with a clamping force of 50 t. It was possible to mold it to a thickness of 0.35 mm and 0.5 mm.

[0041] Preparation Example 3 [Nail color preparation] White natural biomass biodegradable nail color A was prepared by dispersing 180 g of titanium dioxide, 44 g of shellac, and 38 g of bioethanol together with 0.5 mm diameter zirconia beads using a bead mill disperser for 60 minutes. Next, a white natural biomass biodegradable nail color B was prepared in the same manner as above, except that a mixed solvent of 30.4 g of bioethanol and 7.6 g of ethyl lactate was used to obtain a 80 / 20 (w / w) ratio. Furthermore, a white natural biomass biodegradable nail color C was prepared in the same manner as above, except that a mixed solvent of 22.8 g of bioethanol and 15.2 g of ethyl lactate was used to obtain a 60 / 40 (w / w) solvent.

[0042] Preparation Example 4 [Preparation of nail polish remover] A nail polish remover was prepared by mixing 80 g of bioethanol and 20 g of ethyl lactate.

[0043] Characterization (1) Nail tip workability The polylactic acid-containing biodegradable resin composition prepared in Preparation Example 1 had a high melt mass flow rate (MFR) (24-25 g / 10 min) and was capable of molding thin nail tips with a thickness of 0.25 mm. The MFR was measured at 190°C under a load of 2.16 kg using an extrusion-type plastometer specified in JIS K6760 in accordance with the specifications of JIS K7210. The 0.25 mm thick nail tip was prone to cracking when bent to fit the shape of the natural nail, whereas the 0.5 mm thick nail tip did not crack. On the other hand, the biodegradable resin composition containing cellulose acetate prepared in Preparation Example 2 had a low melt mass flow rate (MFR) (7-9 g / 10 min), making it difficult to form nail tips with a thickness of 0.25 mm, but it was possible to form nail tips with a thickness of 0.35 mm or more. (2) Fit Compared with commercially available nail tips (made of ABS), the biodegradable resin composition containing polylactic acid prepared in Preparation Example 1 felt a little hard and heavy, but could be worn without any problems. In addition, the biodegradable resin composition containing cellulose acetate prepared in Preparation Example 2 felt light and not thick, and was easy to wear. (3) Decorative properties for nail tips (a) Decorative properties using commercially available nail colors When colored with commercially available nail colors, the nail tips made from the biodegradable resin compositions containing polylactic acid or cellulose acetate prepared in Preparation Examples 1 and 2 had similar decorative properties to commercially available nail tips (made of ABS). It was confirmed that the nail tip of the present invention can be colored using commercially available nail colors. (b) Decorative properties of the nail color according to the present invention When biodegradable nail color A (100 w / w% bioethanol) prepared in Preparation Example 3 was used to paint natural nails or commercially available nail tips (made of ABS), application was difficult and there was significant drying unevenness. When biodegradable nail color B (80 w / w% bioethanol) prepared in Preparation Example 3 was used to paint natural nails or commercially available nail tips (made of ABS), application was easy, the drying time was short, and there was no problem with uneven drying. When biodegradable nail color C (60 w / w% bioethanol) prepared in Preparation Example 3 was used to paint natural nails or commercially available nail tips (made of ABS), application was easy, and although the drying time was long, there was no problem with uneven drying. Regardless of whether biodegradable nail color B or C prepared in Preparation Example 3 was used to color the nail tips made from the biodegradable resin compositions containing polylactic acid or cellulose acetate prepared in Preparation Example 1 or 2, the decorativeness was equivalent to that of commercially available nail tips (made of ABS). Therefore, it was confirmed that in the biodegradable nail color according to the present invention, if the content of bioalcohol, either bioethanol or biobutanol, in the biomass-derived solvent is 60 to 80% (w / w), application to natural nails or nail tips becomes easy and uneven drying is eliminated. (4) Removal of biodegradable nail polish with nail polish remover Biodegradable nail colors B and C according to the present invention were applied to nail tips made using cellulose acetate as prepared in Preparation Example 2, and the dried films obtained by drying could be removed without any problems using the nail polish remover prepared in Preparation Example 4. [Industrial Applicability]

[0044] According to the present invention, nail tips made entirely from natural materials exhibited the same wearing comfort as conventional ones. Furthermore, because the nail color and nail polish remover are also made from natural ingredients, the environmental impact of plastic waste was significantly reduced.

Claims

1. A nail tip made of a biodegradable resin composition containing a biodegradable polymer, which is cellulose acetate, and cellulose nanofibers, Further, it contains a plasticizer, The nail tip, wherein the plasticizer is at least one selected from the group consisting of acetyl tributyl citrate, triethyl citrate, and tributyl citrate.

2. The nail tip according to claim 1, further comprising an additive selected from the group consisting of a lubricant, a release agent, and a flow improver.

3. The nail tip according to claim 1 or 2, wherein the plasticizer is triethyl citrate.

4. The nail tip according to any one of claims 1 to 3, wherein the biodegradable resin composition further contains calcium carbonate, silica, clay, feldspar, magnesium carbonate, zinc oxide, titanium oxide, silica, alumina, kaolin clay, talc, mica, wollastonite, aluminum hydroxide, magnesium hydroxide, aluminum silicate, magnesium silicate, calcium silicate, aluminum sulfate, magnesium sulfate, calcium sulfate, magnesium phosphate, barium sulfate, silica sand, zeolite, diatomaceous earth, sericite, shirasu, calcium sulfite, potassium titanate, bentonite, graphite, ferrite, or a combination thereof.

5. A biomass-derived resin selected from the group consisting of shellac resin, rosin resin, and cellulose acetate, and a biomass-derived solvent selected from the group consisting of bioethanol, biobutanol, ethyl lactate, and ethyl acetate, A biodegradable nail color, wherein the content of bioethanol or biobutanol in the biomass-derived solvent is 60 to 80 wt %.