Carbon dioxide-based antibacterial UV-cured nail polish and preparation method thereof

Abstract

The invention discloses carbon dioxide-based antibacterial UV-cured nail polish, which is prepared from the following raw material components: polycarbonate polyether acrylate, an inorganic nano material, a reactive diluent, a photoinitiator, a brightening agent, a defoaming agent, a wetting agent and color paste, the polycarbonate polyether propylene is obtained by addition polymerization of the following raw materials in parts by mass: 80-100 parts of polycarbonate polyether polyol, 5-20 parts of a chain extender, 20-40 parts of an isocyanate compound and 20-40 parts of an acrylate monomer; and the polycarbonate polyether polyol is PCE-330P (Polycarbonate Ether 330P) of Yihuiguity. According to the invention, the polycarbonate polyether polyol is used as a basis and is mixed with the inorganic nano material and the active diluting monomer to obtain the UV-curable nail polish, and the product has excellent curing speed, antibacterial property and tensile strength, and is excellent in hydrolysis resistance, safe, green and pollution-free.

Description

Technical Field

[0001] This invention relates to the field of cosmetics technology, specifically to a carbon dioxide-based antibacterial UV-curing nail polish and its preparation method. Background Technology

[0002] With the continuous improvement of living standards, people's awareness of green and environmentally friendly behaviors is gradually increasing. UV-cured polyurethane polymer materials, as an indispensable material in production and daily life, are also developing in this direction. As we know, the flexible and adjustable molecular structure of polyurethane materials gives them excellent weather resistance, wear resistance, salt spray resistance, and mechanical properties. At the same time, due to their green and pollution-free curing method, UV-cured polyurethane materials are widely used in fields such as cosmetics, medical devices, and electronic components.

[0003] Nail polish is one of the most frequently used beauty products among women today. With continuous advancements in material research and development, healthier and more environmentally friendly nail polishes have also emerged on the market. Nail polish mainly consists of three parts: base coat, middle coat, and top coat. The base coat primarily serves to fix and protect the nail, requiring good adhesion and minimal heat release during curing. The middle coat is mainly for color application and shaping, needing to be applied evenly to ensure a uniform film and good gloss after curing. The top coat, as the outermost layer, seals and protects the middle coat, and offers excellent abrasion resistance and gloss.

[0004] Traditional nail polish formulas contain a large proportion of solvents and have a long curing time, making them susceptible to contact with bacteria and microorganisms in the air. This not only affects the shine and appearance after curing but also poses a health risk to those with contaminated nails. Furthermore, as a cosmetic product used in production, nail polish inevitably comes into contact with the skin during application. The volatile organic solvents in nail polish not only pollute the environment but also allow bacteria to multiply rapidly, potentially leading to harmful bacterial infections that seriously endanger the user's health.

[0005] To address the issues of solvent evaporation and bacterial contamination during the curing process of nail polish, UV-cured nail polish has emerged on the market. This type of nail polish introduces photosensitive double bond groups into the main chain and mixes them with reactive diluent monomers of different properties. Upon irradiation with ultraviolet light, it cross-links and cures instantly, resulting in a simple and efficient curing method. However, because it still comes into contact with air and airborne bacteria during the curing process, truly aseptic and anaerobic operation cannot be achieved, necessitating further improvements to the existing technology.

[0006] US Patent 20020010226A1 discloses a UV-curable nail polish with good adhesion and a green, pollution-free curing method; however, research on its antibacterial and antimicrobial properties is limited. Existing antibacterial and antimicrobial approaches mainly fall into two categories: 1. Release-type antibacterial and 2. Contact-type antibacterial. Compared to the former, contact-type antibacterial, by linking antibacterial molecules to the main chain or introducing them through physical blending, results in materials with more durable and efficient antibacterial properties. The cationic groups on the molecular chain can interact with the cell membranes of microorganisms, thereby disrupting their structure and related functions, endowing the material with excellent antibacterial properties. Meanwhile, the application of inorganic nanomaterials as polymer matrices is one of the most promising research directions in the field of polymer composites. By mixing them with polymers, not only can the excellent antibacterial properties of inorganic nanomaterials be obtained, but the flexibility of the polymer molecular chains can also be preserved. Summary of the Invention

[0007] This invention addresses the problems of poor antibacterial effect and long curing time of UV-cured nail polish by providing a carbon dioxide-based antibacterial UV-cured nail polish that can cure quickly and has a long-lasting antibacterial effect.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A carbon dioxide-based antibacterial UV-curing nail polish comprises the following raw material components: polycarbonate polyether acrylate, inorganic nanomaterials, reactive diluent, photoinitiator, brightener, defoamer, wetting agent, and colorant; The polycarbonate polyether propylene is obtained by addition polymerization of the following raw materials in parts by weight: 80-100 parts of polycarbonate polyether polyol, 5-20 parts of chain extender, 20-40 parts of isocyanate compound, and 20-40 parts of acrylate monomer. The polycarbonate polyether polyol is PCE-330P from Hefei Puli.

[0009] The polycarbonate polyether polyol has a hydroxyl value of 42 mg KOH / g, an acid value of 0.03 mg KOH / g, an ester-ether ratio of 0.3:1, a carbon dioxide content of 23.08%, and a viscosity of 6000 mPa·s at 70°C. The hydroxyl density of the polycarbonate polyether polyol used in this invention is well-matched to the curing reaction rate, avoiding excessive crosslinking and embrittlement due to too many hydroxyl groups or insufficient curing due to too few. The acid value is far lower than the industry standard (usually ≤0.1 mg KOH / g), virtually eliminating the risk of acidic catalytic hydrolysis, ensuring the stability of the curing system, and avoiding inhibition of the curing catalyst. The reasonable proportion of carbonate units improves rigidity and weather resistance while ensuring low viscosity and flowability through the polyether chain. The viscosity of 6000 mPa·s at 70°C facilitates uniform mixing and processing with other components (such as UV diluents and isocyanates). The strong polarity and high cohesive energy of the carbonate groups result in a more compact molecular chain arrangement, leading to a smooth and dense cured film surface that reduces bacterial attachment sites. Simultaneously, the alternating ester-ether structure reduces the film's hydrophilicity, inhibiting the adsorption of water required by bacteria and hindering microbial reproduction. The moderate density of hydroxyl groups, mostly highly reactive primary hydroxyl groups, allows for rapid reaction with isocyanates (potential crosslinking agents in UV curing) or photoinitiators, shortening the crosslinking time.

[0010] The preparation of the polycarbonate polyether propylene includes: adding polycarbonate polyether polyol, chain extender, isocyanate compound and acrylate monomer at 70-110℃ for 3.5-5.5h.

[0011] The antibacterial UV-curing nail polish comprises the following raw material components by weight: 80-200 parts polycarbonate polyether acrylate, 1-10 parts inorganic nanomaterials, 10-50 parts reactive diluent, 1-5 parts photoinitiator, 0.01-0.0.5 parts brightener, 0.01-0.0.5 parts defoamer, 0.01-0.0.5 parts wetting agent, and 0.01-0.0.5 parts colorant.

[0012] The isocyanate compound is one or a combination of two or more of diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate or toluene diisocyanate, preferably toluene diisocyanate.

[0013] The chain extender includes one or more of p-hydroxybenzoic acid, gallic acid, vanillic acid, protocatechuic acid, ginkgolic acid, p-hydroxyphenylacetic acid, p-hydroxyphenylethanol, p-methoxyphenylacetaldehyde, monophenolic acid, chlorogenic acid, syringic acid, and hydroxyethyl hexahydrotriazine, preferably hydroxyethyl hexahydrotriazine.

[0014] The acrylate compounds include one or more of methyl acrylate, ethyl acrylate, n-butyl methacrylate, hydroxyisobutyl methacrylate, 2-hydroxy-2-butyl acrylate, methyl methacrylate, hydroxyethyl methacrylate, hydroxybutyl acrylate, hydroxyisooctyl acrylate, or acryloylmorpholine, preferably ethyl acrylate.

[0015] The reactive diluent includes one or more of the following: methyl hydroxyacrylate, ethyl acrylate, isoborneol acrylate, lauryl acrylate, N-vinylpyrrolidone, 1,6-hexanediol diacrylate, tripropylene glycol diacrylate, neopentyl glycol diacrylate, ethylene glycol diacrylate, or acryloylmorpholine.

[0016] The inorganic nanomaterial is a mixture of silicon dioxide and silver nanoparticles, with a mass ratio of silicon dioxide to silver nanoparticles of 0.5-2.

[0017] The photoinitiator includes one or more of 2-hydroxy-2-methyl-1-phenylpropanone, 2-methyl-2-(4-morpholino)-1-[4-(methylthio)phenyl]-1-propanone, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, ethyl 2,4,6-trimethylbenzoylphenylphosphonate, or methyl benzoylcarbamate. The brightening agent includes one or more of the following: dimethyl silicone oil, methyl methacrylate silicone oil, cobalt phthalocyanine, cobalt phthalocyanine amide, or silicon dioxide. The defoamer includes one or more of the following: glyceryl lauryl ester, sorbitan monopalmitate, docosamide, triglyceride, polyethylene glycol stearate, pentaerythritol stearate, and dipropylene glycol monomethyl ether. The wetting agent includes one or more of the following: polyoxyethylene alkylphenol ether, polyoxyethylene fatty alcohol ether, polyoxyethylene polyoxypropylene, castor oil polyoxyethylene ether, sorbitol (polyoxyethylene) fatty acid ester, and polydimethylsiloxane. The color pastes include FLUV-1305 (black), FLUV-2205 (dark blue), FLUV-6600 (violet), FLUV-595 (extra white), FLUV-3805 (Chinese red), and FLUV-2985 (medium yellow).

[0018] The present invention also provides a method for preparing the aforementioned carbon dioxide-based antibacterial UV-curable nail polish, comprising the following steps: mixing and stirring raw materials including polycarbonate polyether acrylate, inorganic nanomaterials, reactive diluent, photoinitiator, brightener, defoamer, wetting agent and color paste, followed by vacuum drying; coating the antibacterial UV-curable nail polish onto the surface of a substrate and UV curing for 2-5 seconds to obtain cured nail polish.

[0019] Compared with the prior art, the present invention has the following beneficial effects: This invention uses polycarbonate polyether polyol as a base, which is mixed with inorganic nanomaterials and reactive diluent monomers to obtain a UV-curable nail polish. A UV-cured product is obtained by adding an appropriate amount of photoinitiator via free radical initiation. The addition of a chain extender, acting as an antibacterial small molecule compound, forms a good antibacterial molecular network at the molecular level, increasing the crosslinking density and greatly endowing the material with excellent antibacterial properties. The inorganic nanomaterials used are a combination of silica and nano-silver powder; the doping of nanomaterials on top of the existing crosslinking network also imparts good antibacterial properties. Furthermore, the inclusion of acrylate bonds meets the requirements for light curing. Compared with the natural curing method of traditional nail polish, it has the advantages of being safe, green, and free of irritating organic solvent evaporation. Compared with commercially available light-cured nail polish, it has a faster curing speed. The UV-curable nail polish of this invention exhibits excellent curing speed, antibacterial properties, and tensile strength after curing, and also has excellent hydrolysis resistance, making it safe, green, and pollution-free. Attached Figure Description

[0020] Figure 1 The NMR spectrum of the polycarbonate polyether acrylate synthesized in Example 1 is shown.

[0021] Figure 2 This is the GPC spectrum of the polycarbonate polyether acrylate synthesized in Example 1.

[0022] Figure 3 The image shows the UV-cured nail polish gel prepared in Example 1. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Modifications or equivalent substitutions made by those skilled in the art based on their understanding of the technical solutions of this invention, without departing from the spirit and scope of the invention, should be covered within the protection scope of this invention.

[0024] All raw materials used in the following specific implementation methods were purchased from the market.

[0025] Example 1 A method for preparing carbon dioxide-based antibacterial UV-curing nail polish, including the following steps: Step 1: Dissolve 8g of polycarbonate polyether polyol, 1g of hydroxyethyl hexahydrotriazine, and 2g of toluene diisocyanate in 50g of ethyl acetate solution. Place the solution in a three-necked flask under a nitrogen atmosphere and heat and stir at 75°C for 4 hours. Then add 3g of hydroxyethyl acrylate and heat and stir at 85°C for 6 hours. After cooling to room temperature, precipitate the product with petroleum ether. After standing, pour off the supernatant and dissolve it in 100ml of acetone. Remove all solvent by rotary evaporation to obtain polycarbonate polyether acrylate with a yield of 96.8%. The NMR spectrum is shown below. Figure 1 As shown, GPC Figure 2 As shown.

[0026] Step 2: Mix 8g of the prepared polycarbonate polyether acrylate, 2g of isooctyl acrylate, 0.1g of 2-hydroxy-2-methyl-1-phenylpropanone, 0.1g of a mixture of silica and nano silver powder (mass ratio 1:2), 0.001g of dimethyl silicone oil, 0.001g of dipropylene glycol monomethyl ether, and 0.002g of polydimethylsiloxane with 0.001g of FLUV-1305 (black) and 0.001g of FLUV-2205 (dark blue), respectively, under vacuum for 20 minutes to remove air bubbles, and obtain UV-cured nail polish.

[0027] UV-curable nail polish is applied to a clean glass substrate and irradiated with a 40W UV lamp for 2.5 seconds to obtain carbon dioxide-based antibacterial UV-curable nail polish cured product A1. (See image for reference.) Figure 3 The black and blue samples are shown in the image.

[0028] Example 2 A method for preparing carbon dioxide-based antibacterial UV-curing nail polish, including the following steps: Step 1: Dissolve 10g of polycarbonate polyether polyol, 1g of hydroxyethyl hexahydrotriazine, and 2g of isophorone diisocyanate in 50g of toluene solution. Place the solution in a three-necked flask under a nitrogen atmosphere and heat and stir at 75°C for 4 hours. Then add 3g of hydroxyethyl acrylate and heat and stir at 85°C for 6 hours. After cooling to room temperature, precipitate the product with petroleum ether. After standing, pour off the supernatant and dissolve it in 100ml of acetone. Remove all solvent by rotary evaporation to obtain polycarbonate polyether acrylate with a yield of 97.8%.

[0029] Step 2: Mix 8g of polycarbonate polyether acrylate, 2g of isooctyl acrylate, 0.1g of 2-hydroxy-2-methyl-1-phenylpropanone, 0.1g of a mixture of silica and nano silver powder (mass ratio 1:2), 0.001g of dimethyl silicone oil, 0.001g of dipropylene glycol monomethyl ether, 0.002g of polydimethylsiloxane, and 0.001g of FLUV-1305 (black) evenly under vacuum for 20 minutes to remove air bubbles, and obtain UV-cured nail polish.

[0030] UV-curable nail polish is applied to a clean glass substrate and irradiated with a 40W UV lamp for 2.5 seconds to obtain carbon dioxide-based antibacterial UV-curable nail polish cured product A2.

[0031] Example 3 A method for preparing carbon dioxide-based antibacterial UV-curing nail polish, including the following steps: Step 1: Dissolve 10g of polycarbonate polyether polyol, 1g of hydroxyethyl hexahydrotriazine, and 2g of isophorone diisocyanate in 50g of toluene solution. Place the solution in a three-necked flask under a nitrogen atmosphere. Heat and stir at 75°C for 4 hours. Then add 3g of hydroxyethyl acrylate and heat and stir at 85°C for 6 hours. After cooling to room temperature, precipitate the product with petroleum ether. After standing, pour off the supernatant and add 100ml of acetone to dissolve it. Remove all solvents by rotary evaporation to obtain polycarbonate polyether acrylate with a yield of 95.7%.

[0032] Step 2: Mix 8g of polycarbonate polyether acrylate, 2g of isooctyl acrylate, 0.1g of 2-hydroxy-2-methyl-1-phenylpropanone, 0.1g of a mixture of silica and nano silver powder (mass ratio 1:2), 0.001g of dimethyl silicone oil, 0.002g of glyceryl laurate, 0.002g of polydimethylsiloxane, and 0.001g of FLUV-6600 (violet) evenly, and remove air bubbles under vacuum for 20 minutes to obtain UV-cured nail polish.

[0033] UV-curable nail polish is applied to a clean glass substrate and irradiated with a 40W UV lamp for 2.5 seconds to obtain carbon dioxide-based antibacterial UV-curable nail polish cured product A3.

[0034] Example 4 A method for preparing carbon dioxide-based antibacterial UV-curing nail polish, including the following steps: Step 1: Dissolve 10g of polycarbonate polyether polyol, 1g of hydroxyethyl hexahydrotriazine, and 2g of hexamethylene diisocyanate in 50g of toluene solution. Place the solution in a three-necked flask under a nitrogen atmosphere. Heat and stir at 75°C for 4 hours. Then add 3g of hydroxyethyl acrylate and heat and stir at 85°C for 6 hours. After cooling to room temperature, precipitate the product with petroleum ether. After standing, pour off the supernatant and add 100ml of acetone to dissolve it. Remove all solvents by rotary evaporation to obtain polycarbonate polyether acrylate with a yield of 93.9%.

[0035] Step 2: Mix 8g of polycarbonate polyether acrylate, 2g of n-butyl acrylate, 0.1g of 2-hydroxy-2-methyl-1-phenylpropanone, 0.1g of a mixture of silica and nano silver powder (mass ratio 1:2), 0.001g of dimethyl silicone oil, 0.002g of glyceryl laurate, 0.002g of polydimethylsiloxane, and 0.001g of FLUV-6600 (violet) evenly, and remove air bubbles under vacuum for 20 minutes to obtain UV-cured nail polish.

[0036] UV-curable nail polish is applied to a clean glass substrate and irradiated with a 40W UV lamp for 2.5 seconds to obtain carbon dioxide-based antibacterial UV-curable nail polish cured product A4.

[0037] Example 5 A method for preparing carbon dioxide-based antibacterial UV-curing nail polish, including the following steps: Step 1: Dissolve 10g of polycarbonate polyether polyol, 1g of hydroxyethyl hexahydrotriazine, and 2g of hexamethylene diisocyanate in 50g of toluene solution. Place the solution in a three-necked flask under a nitrogen atmosphere. Heat and stir at 75°C for 4 hours. Then add 3g of hydroxyethyl acrylate and heat and stir at 85°C for 6 hours. After cooling to room temperature, precipitate the product with petroleum ether. After standing, pour off the supernatant and add 100ml of acetone to dissolve it. Remove all solvents by rotary evaporation to obtain polycarbonate polyether acrylate with a yield of 93.9%.

[0038] (2) Mix 8g of polycarbonate polyether acrylate, 2g of n-butyl acrylate, 0.1g of 2-hydroxy-2-methyl-1-phenylpropanone, 0.1g of a mixture of silica and nano silver powder (mass ratio of 1:2), 0.001g of dimethyl silicone oil, 0.002g of glyceryl laurate, 0.002g of polydimethylsiloxane and 0.001g of FLUV-2985 (medium yellow) evenly under vacuum for 20 minutes to remove air bubbles, and obtain UV-cured nail polish.

[0039] Applying UV-curable nail polish to a clean glass substrate and irradiating it with a 40W UV lamp for 2.5 seconds yields carbon dioxide-based antibacterial UV-curable nail polish cured product A5.

[0040] Example 6 A method for preparing carbon dioxide-based antibacterial UV-curing nail polish, including the following steps: Step 1: Dissolve 12g of polycarbonate polyether polyol, 2g of p-hydroxyphenylacetic acid, and 2g of diphenylmethane diisocyanate in 50g of acetone solution. Place the solution in a three-necked flask under a nitrogen atmosphere and heat and stir at 90°C for 4 hours. Then add 2g of hydroxyethyl acrylate and heat and stir at 90°C for 6 hours. After cooling to room temperature, precipitate the product with ethyl acetate. After standing, pour off the supernatant and add 20ml of dichloromethane to dissolve it. Remove all solvents by rotary evaporation to obtain polycarbonate polyether acrylate with a yield of 95.1%.

[0041] Step 2: Mix 15g of polycarbonate polyether acrylate, 6g of ethyl methacrylate, 0.1g of silica, 0.001g of dimethyl silicone oil, 0.001g of dipropylene glycol monomethyl ether, 0.002g of polydimethylsiloxane and 0.001g of FLUV-2985 (medium yellow) evenly under vacuum for 20 minutes to remove air bubbles, and you will get UV-cured nail polish.

[0042] UV-curable nail polish is applied to a clean glass substrate and irradiated with a 40W UV lamp for 2.5 seconds to obtain carbon dioxide-based antibacterial UV-curable nail polish cured product A6.

[0043] Example 7 The steps in Example 1 were followed, except that toluene diisocyanate was replaced with isophorone acrylate, resulting in UV-cured product A7.

[0044] Comparative Example 1 The steps in Example 1 were followed, except that polycarbonate polyether polyol was not used. Instead, toluene diisocyanate, hydroxyethyl hexahydrotriazine and hydroxyethyl acrylate were reacted directly to obtain acrylate monomers, resulting in UV-cured product B1.

[0045] Comparative Example 2 The steps in Example 1 were followed, except that the polycarbonate polyether polyol was replaced with a polyether polyol, which was purchased from Lanxing Dongda PPG-3000, resulting in UV-cured product B2.

[0046] Comparative Example 3 Purchase commercially available UV-curing nail polish, specifically KALISA Nail-Carbon-Black, apply it to a clean glass substrate, and irradiate it with a 40W UV lamp for 10 seconds to obtain carbon dioxide-based high-strength UV-curing nail polish cured product B3.

[0047] Comparative Example 4 The steps in Example 1 were followed, except that the polycarbonate polyether polyol was replaced with 220D, which was purchased from Hefei Puli Advanced Materials Technology Co., Ltd., and the resulting UV-cured product was B4.

[0048] The cured products prepared in the examples and comparative examples were tested for antibacterial properties, tensile strength, and hydrolysis resistance. The curing time test method was as follows: The prepared UV-cured nail polish was placed in a 100ml beaker, which was then placed in a vacuum oven (model LC-DZF-6090AB, power 1400W) for 10 minutes to remove any air bubbles that might have formed during stirring. Approximately 20g of nail polish was poured into a 5mm × 5mm × 2mm PVC mold until the oil level was flush with the mold surface. Curing was performed using a dedicated UV lamp (model M5-105, power 42W, wavelength 362nm), with the time recorded using an electronic stopwatch. The UV lamp was then turned off after the surface had solidified.

[0049] Antimicrobial test: The cured material obtained by UV curing was made into a 5cm × 5cm rectangular film. Antimicrobial testing was conducted according to ISO 22196-2011 "Determination of antimicrobial properties of plastics and other non-porous surfaces". All samples and equipment were sterilized under 254nm UV light for 30 minutes. Staphylococcus aureus and Escherichia coli were selected and inoculated into LB liquid medium to prepare 1×10⁻⁶ films. 6 A CFU / mL suspension was evenly applied to the surface of the UV-cured material, tightly wrapped with a sterile polyethylene film, and incubated in a sterile incubator at 37°C and 90% relative humidity. Samples were taken periodically after 0h, 100h, 300h, and 600h, and the antibacterial rate was tested according to ISO22196. The surfactant content was then analyzed by liquid chromatography, and the half-life was calculated.

[0050] Tensile strength test: An INSTRON-3344 electronic universal tensile testing machine from Instrand Corporation, USA, was used. The tensile testing speed was 5 mm / min. Dumbbell-shaped samples were prepared according to the national standard GB / T1040.2 / 2006, and the average value of five samples was taken.

[0051] Hydrolysis resistance test: The cured product obtained by UV curing is made into a 5cm×5cm rectangular film. The prepared film is cut into several pieces according to the standard of 20mm*35mm, and the film name and placement date are marked. The film is placed in a high and low temperature alternating damp heat test chamber (BIUGED, type BGD897 / 225C, temperature range 40℃~150℃, humidity range 20~98%), the test standard is GB / T2423.34, according to the set conditions (24h is one cycle: high temperature 100℃, humidity 90%, 12h; low temperature 30℃, humidity 23%, 12h).

[0052] The test results for antibacterial properties, tensile strength, and hydrolysis resistance are shown in Table 1 below.

[0053] Table 1. Properties of UV-cured products obtained from different embodiments and comparative examples. As shown in Table 1, Examples 1-5 are superior to Comparative Example 1 in terms of antibacterial properties and tensile strength. Furthermore, their half-life is also superior to Comparative Example 1 when the initial surfactant concentration is halved. They also demonstrate excellent curing time and water resistance. The comparison of antibacterial properties between Examples 1 and 6 shows that adding silica and nano-silver powder in a certain proportion can impart excellent antibacterial properties to the material. Example 1 exhibits 92.3% initial antibacterial activity, while Example 6 only shows 63.7%.

[0054] Meanwhile, in the comparison of Example 1, Comparative Example 1, and Comparative Example 3, it can be concluded that the UV-cured product prepared in the formulation containing polycarbonate polyether polyol has excellent initial antibacterial properties. Specifically, the initial antibacterial property of Example 1 is 92.3%, while that of Comparative Example 1 and Comparative Example 3 are 70.6% and 66.5%, respectively (data discrepancies exist; please verify and correct). In the comparison of the antibacterial properties of Example 1 and Comparative Example 4, it can be concluded that the UV-cured nail polish prepared by PCE-330P has superior antibacterial properties compared to PCE-220D, with an initial antibacterial property of 92.3%, while that prepared by PCE-220D is only 63.4%.

[0055] Because Comparative Example 1 (without the addition of flexible segments) exhibits higher tensile strength (23 MPa), but lower hydrolysis resistance (only 12 h), the UV-cured nail polish of this invention demonstrates significant application value.

Claims

1. A carbon dioxide-based antibacterial UV-cured nail polish, characterized by, The raw material components include: polycarbonate polyether acrylate, inorganic nanomaterials, reactive diluent, photoinitiator, brightener, defoamer, wetting agent and color paste; The polycarbonate polyether propylene is obtained by addition polymerization of the following raw materials in parts by weight: 80-100 parts of polycarbonate polyether polyol, 5-20 parts of chain extender, 20-40 parts of isocyanate compound, and 20-40 parts of acrylate monomer. The polycarbonate polyether polyol is PCE-330P from Hefei Puli.

2. The carbon dioxide-based antimicrobial UV-cured nail polish according to claim 1, wherein, The preparation of the polycarbonate polyether propylene includes: adding polycarbonate polyether polyol, chain extender, isocyanate compound and acrylate monomer at 70-110℃ for 3.5-5.5h.

3. The carbon dioxide-based antimicrobial UV-cured nail polish according to claim 1, wherein, The antibacterial UV-curing nail polish comprises the following raw material components by weight: 80-200 parts polycarbonate polyether acrylate, 1-10 parts inorganic nanomaterials, 10-50 parts reactive diluent, 1-5 parts photoinitiator, 0.01-0.0.5 parts brightener, 0.01-0.0.5 parts defoamer, 0.01-0.0.5 parts wetting agent, and 0.01-0.0.5 parts colorant.

4. The carbon dioxide-based antimicrobial UV-cured nail polish according to claim 1, wherein, The isocyanate compound is one or a combination of two or more of diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate or toluene diisocyanate.

5. The carbon dioxide-based antimicrobial UV-cured nail polish according to claim 1, wherein, The chain extender includes one or more of the following: p-hydroxybenzoic acid, gallic acid, vanillic acid, protocatechuic acid, ginkgolic acid, p-hydroxyphenylacetic acid, p-hydroxyphenylethanol, p-methoxyphenylacetaldehyde, monophenolic acid, chlorogenic acid, syringic acid, and hydroxyethylhexahydrotriazine.

6. The carbon dioxide-based antimicrobial UV-cured nail polish according to claim 1, wherein, The acrylate compounds include one or more of the following: methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, hydroxyisobutyl methacrylate, 2-hydroxy-2-butyl acrylate, methyl methacrylate, hydroxyethyl methacrylate, hydroxybutyl methacrylate, hydroxyisooctyl acrylate, or acryloylmorpholine.

7. The carbon dioxide-based antimicrobial UV-cured nail polish according to claim 1, wherein, The reactive diluent includes one or more of the following: methyl hydroxyacrylate, ethyl acrylate, isoborneol acrylate, lauryl acrylate, N-vinylpyrrolidone, 1,6-hexanediol diacrylate, tripropylene glycol diacrylate, neopentyl glycol diacrylate, ethylene glycol diacrylate, or acryloylmorpholine.

8. The carbon dioxide-based antimicrobial UV-cured nail polish according to claim 1, wherein, The inorganic nanomaterial is a mixture of silicon dioxide and silver nanoparticles, with a mass ratio of silicon dioxide to silver nanoparticles of 0.5-2.

9. The carbon dioxide-based antimicrobial UV-cured nail polish according to claim 1, wherein, The photoinitiator includes one or more of 2-hydroxy-2-methyl-1-phenylpropanone, 2-methyl-2-(4-morpholino)-1-[4-(methylthio)phenyl]-1-propanone, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, ethyl 2,4,6-trimethylbenzoylphenylphosphonate, or methyl benzoylcarbamate. The brightening agent includes one or more of the following: dimethyl silicone oil, methyl methacrylate silicone oil, cobalt phthalocyanine, cobalt phthalocyanine amide, or silicon dioxide. The defoamer includes one or more of the following: glyceryl lauryl ester, sorbitan monopalmitate, docosamide, triglyceride, polyethylene glycol stearate, pentaerythritol stearate, and dipropylene glycol monomethyl ether. The wetting agent includes one or more of the following: polyoxyethylene alkylphenol ether, polyoxyethylene fatty alcohol ether, polyoxyethylene polyoxypropylene, castor oil polyoxyethylene ether, sorbitol (polyoxyethylene) fatty acid ester, and polydimethylsiloxane. The color pastes include FLUV-1305 (black), FLUV-6600 (violet), FLUV-595 (extra white), FLUV-3805 (Chinese red), and FLUV-2985 (medium yellow).

10. The method for preparing carbon dioxide-based antibacterial UV-curing nail polish according to any one of claims 1-9, characterized in that, The process includes the following steps: mixing and stirring raw materials including polycarbonate polyether acrylate, inorganic nanomaterials, reactive diluents, photoinitiators, brighteners, defoamers, wetting agents, and color pastes, followed by vacuum drying; applying antibacterial UV-curable nail polish to the substrate surface and UV curing for 2-5 seconds to obtain cured nail polish.

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