KR102512304B1 - Synthesis method of acrylate-modified urethane and uv-curable solvent-free artificial nail gel composition using the same - Google Patents

Abstract

The present invention relates to a method for synthesizing acrylate-modified urethane and a UV-curable solvent-free gel composition for artificial nails using the same. According to the method for synthesizing acrylate-modified urethane, reactive polyurethane is prepared by reacting isocyanate-acrylate with polyester polyol or polyether polyol, and acrylate-modified polyurethane is synthesized by combining the reactive polyurethane, a monomer or an oligomer, a catalyst, and a photoinitiator. Therefore, a low-viscosity gel for artificial nails can be produced without using an organic solvent.

Description

Method for synthesizing acrylate-modified urethane and gel composition for UV-curable solvent-free artificial nails using the same

The present invention relates to a method for synthesizing acrylate-modified urethane and a UV-curable solvent-free gel composition for artificial nails using the same, and more particularly, by including acrylate-modified urethane, it can be produced in an environmentally friendly solvent-free manner and does not use an organic solvent. The present invention relates to a method for synthesizing acrylate-modified urethane capable of producing a gel for artificial nails having low viscosity without using the same, and a UV-curable solventless gel composition for artificial nails using the same.

In general, UV curable gel is a urethane having a vinyl functional group prepared by reacting a hydroxyl group-containing monomer having an isocyanate and a hydroxyl group compound such as polyester polyol or polyether polyol in the presence of a catalyst, or an unsaturated monomer containing a hydroxyl group. Polyhydric polyester polyols, polyether polyols, diisocyanates, and hydroxyl group-containing acryl or methacrylic monomers are used for the urethane having a vinyl functional group.

Polyether-based polyurethane can be prepared by reacting a polyhydric polyether polyol, diisocyanate, and an acrylic monomer containing a hydroxyl group. In addition to urethane, polyester or polyether containing vinyl may be produced through an esterification reaction of a hydroxyl group-containing polyether and polyester with an acrylic acid monomer.

UV-curable gels are colorless or pigmented and are usually used by professionals and cured by holding the hand under a wavelength that causes a photochemical reaction. These UV curable gels can be applied directly to the natural nail or alternatively bonded to the nail and applied to the nail extension. In some cases, after the artificial nail is cured, it is coated with conventional nail polish.

The composition of this UV curable gel is generally composed of a thermosetting resin and a UV curing resin, and the thermosetting resin includes an epoxy resin, an acrylic resin, a polyester resin, etc., and butyl acetate, an organic diluent, is used to control the viscosity of these resins. , a solvent such as ethyl acetate, acetone or isopropyl alcohol is used.

In addition, N-dimethylacrylamide, isobornyl acrylate, and aliphatic urethane acrylate are used as UV curing resins, and aliphatic urethane acrylate has good reactivity, so it is easy to cure, has excellent flexibility after curing, and has low yellowing. However, if used alone, the surface is soft, so a thermosetting resin must be used. In addition, since the solvent used to adjust the viscosity of the resin is harmful to the human body and directly contacts the human body, there is a problem that it can be absorbed by the human body.

Domestic Patent Publication No. 10-2022-0074364 (published on June 03, 2022) Domestic Patent Publication No. 10-2004-0059956 (published on July 06, 2004) Domestic Patent No. 10-1898602 (registered on September 7, 2018)

A problem to be solved by the present invention is a method for synthesizing acrylate-modified urethane, which can be produced with environmentally friendly solvent-free by including acrylate-modified urethane and can produce a gel for artificial nails with low viscosity without using an organic solvent. and a UV curable solvent-free gel composition for artificial nails using the same.

In addition, another problem to be solved by the present invention is to prepare a reactive polyurethane having one or two acrylate-based unsaturated groups at the terminal of a polyurethane resin obtained by reacting a polyester polyol or polyether polyol with a diisocyanate. Since it can simultaneously replace thermosetting resins and UV curing resins used in gels for artificial nails, gels for artificial nails with low viscosity can be prepared without using organic solvents, and the synthesized reactive polyurethane contains acrylate-based unsaturated It is to provide a method for synthesizing acrylate-modified urethane, which has a hydroxyl group and can simultaneously perform environmentally friendly UV curing and urethane thermal curing using isocyanate, and a UV curable solvent-free artificial nail gel composition using the same.

Various problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

In one embodiment of the technical idea of the present invention, a method for synthesizing acrylate-modified urethane is disclosed.

The method for synthesizing the acrylate-modified urethane is prepared in a ratio of 1 mole of aliphatic or alicyclic diisocyanate and 1 mole of hydroxy acrylate monomer, and then adding hydroxy acrylate monomer to the prepared aliphatic or alicyclic diisocyanate at 20 ° C. It was added dropwise for 3 hours to proceed with the catalyst reaction (Bismuth Neodecanoate, 0.01wt%) to prepare an isocyanate-acrylate in which an isocyanate group and a vinyl group exist simultaneously at the terminal group, and the isocyanate group and vinyl group simultaneously exist at the terminal group. An isocyanate-acrylate having two or more hydroxyl groups is reacted at a temperature of 83° C. for 5 hours to prepare a reactive polyurethane having a hydroxyl group and a vinyl group, wherein the hydroxyl group and the vinyl group are present. Acrylate-modified polyurethane used in a UV-curable, solvent-free gel for artificial nails by blending at the same time the ratio of 64.5% by weight of reactive polyurethane, 33.2% by weight of hydroxyl group-containing monomer or oligomer, 0.3% by weight of catalyst, and 2% by weight of photoinitiator. synthesize
In addition, another embodiment of the technical idea of the present invention discloses a UV curable gel composition for non-solvent artificial nails using acrylate-modified polyurethane.

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The gel composition for UV curable solvent-free artificial nails using the acrylate-modified polyurethane contains acrylate-modified polyurethane, plasticizer, tackifier, metal hydrosilylation, copper oxide nanoparticles, alkoxysilane and polytetrafluoroethylene. do.

Details of other embodiments are included in the detailed description.

The UV-curable solvent-free gel composition for artificial nails according to various embodiments of the present invention contains acrylate-modified urethane and thus can be produced in an environmentally friendly solvent-free way and has low viscosity without using an organic solvent. can be manufactured.

In addition, the gel composition for UV curable solvent-free artificial nails according to various embodiments of the technical idea of the present invention contains one or two acrylates at the ends of a polyurethane resin obtained by reacting polyester polyol or polyether polyol with diisocyanate. By preparing a reactive polyurethane having a systemic unsaturated group, it is possible to simultaneously substitute a thermosetting resin and a UV curing resin used in general artificial nail gels, so that an artificial nail gel having low viscosity can be prepared without using an organic solvent, Since the synthesized reactive polyurethane has an acrylate-based unsaturated group and a hydroxyl group at the same time, an eco-friendly UV curing method and a urethane thermal curing method using isocyanate can be simultaneously performed in a curing method.

It will be fully understood that various embodiments of the technical idea of the present invention can provide various effects not specifically mentioned.

1 is a reaction scheme schematically showing a manufacturing process for synthesizing acrylate-modified urethane according to an embodiment of the technical idea of the present invention.

The advantages and features of the present invention, and how to achieve them, will become clear with reference to the detailed description of the embodiments below. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content will be thorough and complete and the spirit of the present invention will be sufficiently conveyed to those skilled in the art.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with the meanings in the context of the related art, and unless explicitly defined in this application, they should not be interpreted in ideal or excessively formal meanings. don't

Hereinafter, with reference to the accompanying drawings, a method for synthesizing acrylate-modified polyurethane according to an embodiment of the technical idea of the present invention will be described in detail with reference to a preferred embodiment.

1 is a reaction scheme schematically showing a manufacturing process for synthesizing acrylate-modified polyurethane according to an embodiment of the technical idea of the present invention.

Referring to FIG. 1, a method for producing a reactive polyurethane having an acrylate-based unsaturated group and a hydroxyl group at the same time according to an embodiment of the technical idea of the present invention, as shown in FIG. Isocyanate (Diisocyanate) and hydroxy acrylate are reacted to prepare an isocyanate-acrylate in which an isocyanate group and a vinyl group are simultaneously present at the end group.

In addition, in the second step, the isocyanate group and the vinyl group prepared in the first step are reacted with an isocyanate-acrylate and a polyester polyol or polyether polyol having two or more hydroxyl groups present at the same time to form a polyurethane resin. A reactive polyurethane having both an acrylate-based unsaturated group and a hydroxyl group at the terminal is prepared.

In the first step reaction, the reaction between diisocyanate and hydroxy acrylate monomer may be prepared in a ratio of 1 mole of diisocyanate and 1 mole of hydroxy acrylate monomer, and the prepared diisocyanate is mixed with hydroxy acrylate monomer at room temperature (15 to 25° C.) for 2 to 4 hours to carry out a catalytic reaction.

In the second-step reaction, the acrylate monomer (containing isocyanate group) having an isocyanate end group reacted in the first-step reaction and the polyester polyol or polyether polyol having two or more hydroxyl groups are mixed at a temperature of 80 to 85 ° C. for 4 to 6 hours to prepare a reactive polyurethane in which a hydroxyl group and a vinyl group simultaneously exist, 50 to 80% by weight of the reactive polyurethane in which the hydroxyl group and a vinyl group simultaneously exist, and 20 to 50% by weight of a monomer or oligomer containing a hydroxyl group %, 0.1 to 0.5% by weight of the catalyst and 0.1 to 5% by weight of the photoinitiator, thereby synthesizing acrylate-modified polyurethane used in a UV-curable solventless gel for artificial nails.

The reactive polyurethane having both an acrylate-based unsaturated group and a hydroxyl group is preferably selected from the group consisting of bismuth, zinc, hafnium, zirconium, copper, iron, chromium, aluminum, cerium, titanium, manganese, nickel, potassium and cobalt. It is prepared by reacting a hydroxy acrylate monomer containing a hydroxyl group with an isocyanate and a polyester polyol or polyether polyol having two or more hydroxyl groups in the presence of a catalyst selected from salts or complexes. Urethanes can contain one or more ether groups, and bismuth, zinc, and amine-based catalysts are most preferably used with tin-based catalysts.

Isocyanates useful in the present invention include, for example, aliphatic isocyanates such as isophorone diisocyanate, hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, 4,4′-methylene dicyclohexyl diisocyanate, and the like, toluene diisocyanate, methylene diisocyanate, and the like. cycloaliphatic isocyanates such as phenyl diisocyanate, polymeric methylene diphenyl diisocyanate, tetramethylxylylene diisocyanate and the like. And isocyanate terminated prepolymers can be made from polyesters, polyethers or other hydroxyl functional materials and mixtures of materials containing isocyanate groups can also be used.

Hydroxyl group-containing monomers include 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, diethylene glycol monoacrylate, diethylene glycol monomethacrylate, glycerol (meth)acrylate, and glycerol di(meth)acryl. sorbitol (meth)acrylate, di(meth)acrylate and tri(meth)acrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, tetraethylene Glycol mono(meth)acrylate, pentaethylene glycol mono(meth)acrylate, dipropylene glycol monomethacrylate, and dipropylene glycol monoacrylate, dipentaerythritol pentaacrylate, dipentaerythritol pentamethacrylate , pentaerythritol triacrylate, pentaerythritol trimethacrylate, caprolactone (meth)acrylate, polycaprolactone (meth)acrylate, polyethylene oxide mono(meth)acrylate, polypropylene oxide (meth)acrylate , Ditrimethyol propane tetra (meth) acrylate, carbohydrate-based (meth) acrylic monomers, and any one or more selected from the group consisting of hydroxyl alkyl (meth) acrylamide may be used, for example, n-methyl Roll acrylamide can be preferably used, and the most preferred hydroxyl group-containing monomers can be hydroxyethyl methacrylate (HEMA) and hydroxyethyl acrylate (HEA). Mixtures of one or more hydroxyl group-containing monomers may be used. In addition, it is preferred that the hydroxyl functional monomer is present at greater than 5% by weight of the composition.

In addition, the gel for artificial nails according to one embodiment of the technical idea of the present invention may contain a UV initiator. For example, the UV initiator includes benzyl ketone, monomeric hydroxyl ketone, polymeric hydroxyl ketone, alpha-amino ketone, acyl phosphine oxide, phosphinate, metallocene, benzophenone, benzophenone derivative, and the like. can include

Specific examples include 1-hydroxycyclohexylphenylketone, benzophenone, 2-benzyl-2-(dimethylamino)-1-(4-(4-morpholinyl)phenyl)-1-butanone, 2-methyl -1-(4-methylthio)phenyl-2-(4-morpholinyl)-1-propanone, diphenyl-(2, 4, 6-trimethylbenzoyl)phosphine oxide, phenylbis(2, 4, 6-trimethylbenzoyl)phosphine oxide, benzyldimethylketal, isopropylthioxanthone, ethyl(2,4,6-trimethylbenzoyl)phenylphosphinate and phenyl(2,4,6-trimethylbenzoyl)phenylphosphinate Any one or more selected from the group consisting of may be used.

Hereinafter, an embodiment of a method for synthesizing acrylate-modified urethane according to an embodiment of the technical idea of the present invention will be described in more detail, but the technical idea of the present invention is not limited by the following examples.

<Example 1>

First, after preparing a ratio of 1 mole of diisocyanate and 1 mole of hydroxy acrylate monomer, the hydroxy acrylate monomer was added dropwise to the prepared diisocyanate at 20 ° C. for 3 hours to initiate a catalyst (Bismuth Neodecanoate, 0.01 wt%) reaction. Proceeding to prepare an isocyanate-acrylate in which an isocyanate group and a vinyl group are simultaneously present at the end group. At this time, the end point of the catalytic reaction was the point at which isocyanate disappeared.

Next, the isocyanate-acrylate in which the isocyanate group and the vinyl group are present at the end group at the same time and the polyester polyol in which two or more hydroxyl groups are present are reacted at a temperature of 83 ° C. for 5 hours to obtain a reactivity in which the hydroxyl group and the vinyl group are present at the same time. Polyurethane was prepared.

At this time, 64.5% by weight of the reactive polyurethane in which hydroxyl and vinyl groups exist simultaneously, 33.2% by weight of a monomer or oligomer containing a hydroxyl group, 0.3% by weight of a catalyst, and 2% by weight of a photoinitiator were formulated to form a UV curable solvent-free artificial nail gel. The acrylate-modified polyurethane used was synthesized.

Hereinafter, a UV-curable solvent-free gel composition for artificial nails using acrylate-modified polyurethane according to an embodiment of the technical idea of the present invention will be described in more detail with a preferred embodiment.

A gel composition for UV curable solvent-free artificial nails according to an embodiment of the technical idea of the present invention includes acrylate-modified polyurethane, plasticizer, tackifier, metal hydrosilylation, copper oxide nanoparticles, alkoxysilane, and polytetrafluoroethylene. includes

In addition, the UV curable solventless gel composition for artificial nails includes 180 to 220 parts by weight of acrylate-modified polyurethane, 10 to 20 parts by weight of a plasticizer, 20 to 40 parts by weight of a tackifier, 0.1 to 1 part by weight of a metal hydrosilylate, and oxidized It may be included in a weight ratio of 0.5 to 1.5 parts by weight of copper nanoparticles, 1 to 3 parts by weight of alkoxysilane, and 0.1 to 1 part by weight of polytetrafluoroethylene.

The acrylate-modified polyurethane can be synthesized by the above-described method. The acrylate-modified polyurethane can simultaneously replace thermosetting resins and UV curing resins used in general gels for artificial nails, so that organic solvents are not used. A gel for artificial nails with low viscosity can be prepared, and the synthesized reactive polyurethane has an acrylate-based unsaturated group and a hydroxyl group at the same time, so an eco-friendly UV curing method and a urethane thermal curing method using isocyanate can be simultaneously performed. .

Since the configuration of the acrylate-modified polyurethane is the same as described above, a detailed description thereof will be omitted for convenience of description and clarity of the technical concept of the present invention.

The plasticizer may be used to impart flexibility and adhesiveness. For example, the plasticizer may be at least one selected from the group consisting of sorbitol, ethylene glycol, glycerin, glycerin diacetate, and pentaerythritol. can be used

The tackifier is a low-molecular-weight resin that improves workability by lowering the melt viscosity, improves initial wettability of adhesion, improves adhesion to natural nails or artificial nails, decorative accessories, stickers, etc., and controls curing (hardening) time, etc. As the tackifier, a rosin ester tackifier may be used. For example, it is preferable to use known RA-701 as the rosin ester tackifier.

The metal hydrosilylation is a catalyst, and serves to promote the addition reaction of the acrylate-modified polyurethane and the tackifier, and improves the adhesiveness of the gel composition for artificial nails, particularly the initial adhesiveness.

For example, as the hydrosilylation metal, one or more selected from the group consisting of platinum hydrosilylation, rhodium hydrosilylation, ruthenium hydrosilylation, palladium hydrosilylation, and iridium hydrosilylation may be used. The hydrosilylated platinum may be a complex compound of [{(CH ₂ ═CH)(CH ₃ ) ₂ SiO _1/2 }p]q and platinum. Here, p is 2 and q is 4.

The copper oxide nanoparticles may be included to impart antibacterial and deodorant properties, and the copper oxide nanoparticles inhibit the propagation of bacteria themselves and interfere with the metabolism of various microorganisms to remove the cause of unpleasant odors. It can impart deodorization.

The copper oxide nanoparticles may be prepared by surface modification by stirring 0.1 to 2 parts by weight of silane with respect to 100 parts by weight of copper oxide powder having a particle size of 1 to 200 nm.

That is, since the surface of the copper oxide powder is generally hydrophilic, the OH group cannot be dispersed in the resin and can be aggregated with each other. By causing hydrolysis between the OH groups of , the hydrophobic OR group in silane is located on the surface of the copper oxide powder, and the dispersibility can be improved due to the repulsive force between the OR groups, that is, the copper oxide powder.

In addition, the silane is vinyltriethoxysilane, vinyltrimethoxysilane or vinyltri(2-methoxyethoxy)silane to improve dispersibility as described above. silane) may be used, but it is not necessarily limited thereto, and various silanes known in the art may be used.

The alkoxysilane can function as a crosslinking agent, surface treatment agent, adhesion promoter, and internal reinforcing agent, and generally strengthens the bond between an inorganic surface and an organic binder and can help exhibit various improved physical properties such as chemical resistance and moisture resistance. It is being used so that

The alkoxysilane is RnSi(OR')4-n (where R is an alkyl group having 1 to 4 carbon atoms, R' is an alkyl group having 1 to 3 carbon atoms or an acyl group having 1 to 3 carbon atoms, and n is 1, 2 or 3) can be represented.

The polytetrafluoroethylene may be included to improve moisture resistance or water repellency. That is, when the polytetrafluoroethylene is contained in a UV-curable solvent-free gel composition for artificial nails and used by attaching accessories, stickers, etc. for artificial nails to natural nails, penetration of moisture causes the accessories, stickers, etc. This can be prevented from being easily separated from the natural nail or the like.

Hereinafter, with reference to the accompanying drawings, an embodiment of a UV-curable solventless gel composition for artificial nails according to an embodiment of the technical idea of the present invention will be described in detail. The following examples are intended to illustrate the present invention, and the present invention is not limited to the following examples, and may be variously modified and changed.

<Example 2>

200 parts by weight of acrylate-modified polyurethane, 15 parts by weight of plasticizer, 30 parts by weight of tackifier, 0.5 parts by weight of metal hydrosilylation, 1 part by weight of copper oxide nanoparticles, 2 parts by weight of alkoxysilane and 0.5 parts by weight of polytetrafluoroethylene A UV curable solvent-free gel composition for artificial nails was prepared by mixing in a weight ratio of parts.

At this time, the acrylate-modified polyurethane was prepared by the following method.

First, after preparing a ratio of 1 mole of diisocyanate and 1 mole of hydroxy acrylate monomer, the hydroxy acrylate monomer was added dropwise to the prepared diisocyanate at 20 ° C. for 3 hours to initiate a catalyst (Bismuth Neodecanoate, 0.01 wt%) reaction. Proceeding to prepare an isocyanate-acrylate in which an isocyanate group and a vinyl group are simultaneously present at the end group. At this time, the end point of the catalytic reaction was the point at which isocyanate disappeared.

Next, the isocyanate-acrylate in which the isocyanate group and the vinyl group are present at the end group at the same time and the polyester polyol in which two or more hydroxyl groups are present are reacted at a temperature of 83 ° C. for 5 hours to obtain a reactivity in which the hydroxyl group and the vinyl group are present at the same time. Polyurethane was prepared.

At this time, 64.5% by weight of the reactive polyurethane in which hydroxyl and vinyl groups exist simultaneously, 33.2% by weight of a monomer or oligomer containing a hydroxyl group, 0.3% by weight of a catalyst, and 2% by weight of a photoinitiator were formulated to form a UV curable solvent-free artificial nail gel. The acrylate-modified polyurethane used was synthesized.

<Comparative Example>

An adhesive used for attaching commercially available artificial nails to nails was prepared, and this was used as a gel (adhesive) for artificial nails according to Comparative Example.

1. Adhesion test

After the gel for artificial nails according to Examples and the gel for artificial nails according to Comparative Example were adhered to natural nails, the adhesive force was measured, and the results are shown in [Table 1] below. (Unit: gf/10 mm) )

division Example comparative example adhesiveness 1,532 1,127

Referring to [Table 1], it can be seen that the gel for artificial nails according to the Examples has excellent adhesive strength.

In the above, a preferred embodiment of the present invention has been described with reference to the accompanying drawings, but those skilled in the art to which the present invention pertains may change the technical spirit or essential characteristics of the present invention in other specific forms. It will be appreciated that this can be implemented. Therefore, one embodiment described above should be understood as illustrative in all respects and not limiting.

Claims (5)

After preparing at a ratio of 1 mole of aliphatic or alicyclic diisocyanate and 1 mole of hydroxy acrylate monomer, the hydroxy acrylate monomer was added dropwise to the prepared aliphatic or alicyclic diisocyanate at 20 ° C. for 3 hours to obtain a catalyst (Bismuth Neodecanoate, 0.01 wt%) reaction to prepare an isocyanate-acrylate in which an isocyanate group and a vinyl group are present at the terminal group at the same time,
The isocyanate-acrylate in which the isocyanate group and the vinyl group are present at the terminal group at the same time and the polyester polyol or polyether polyol in which two or more hydroxyl groups are present are reacted at a temperature of 83 ° C. for 5 hours to obtain a hydroxyl group and a vinyl group at the same time. To prepare a reactive polyurethane,
64.5% by weight of the reactive polyurethane containing both hydroxyl and vinyl groups, 33.2% by weight of hydroxyl group-containing monomers or oligomers, 0.3% by weight of catalyst, and 2% by weight of photoinitiator used in UV curable solvent-free artificial nail gel A method for synthesizing acrylate-modified urethane, characterized in that for synthesizing acrylate-modified polyurethane.
delete Including acrylate-modified polyurethane, plasticizer, tackifier, metal hydrosilylation, copper oxide nanoparticles, alkoxysilane and polytetrafluoroethylene,
The acrylate-modified polyurethane is prepared in a ratio of 1 mole of aliphatic or alicyclic diisocyanate and 1 mole of hydroxy acrylate monomer, and then adding hydroxy acrylate monomer to the prepared aliphatic or alicyclic diisocyanate at 20 ° C. for 3 hours while the catalyst (Bismuth Neodecanoate, 0.01wt%) reaction proceeds to produce an isocyanate-acrylate in which an isocyanate group and a vinyl group are present at the terminal group at the same time,
The isocyanate-acrylate in which the isocyanate group and the vinyl group are present at the terminal group at the same time and the polyester polyol or polyether polyol in which two or more hydroxyl groups are present are reacted at a temperature of 83 ° C. for 5 hours to obtain a hydroxyl group and a vinyl group at the same time. To prepare a reactive polyurethane,
64.5% by weight of the reactive polyurethane containing both hydroxyl and vinyl groups, 33.2% by weight of hydroxyl group-containing monomers or oligomers, 0.3% by weight of catalyst, and 2% by weight of photoinitiator used in UV curable solvent-free artificial nail gel A gel composition for UV-curable, non-solvent artificial nails using acrylate-modified polyurethane, characterized in that acrylate-modified polyurethane is synthesized.
According to claim 3,
180 to 220 parts by weight of the acrylate-modified polyurethane, 10 to 20 parts by weight of a plasticizer, 20 to 40 parts by weight of a tackifier, 0.1 to 1 part by weight of a hydrosilylated metal, 0.5 to 1.5 parts by weight of copper oxide nanoparticles, alkoxysilane A gel composition for UV curable, non-solvent artificial nails using acrylate-modified polyurethane, comprising 1 to 3 parts by weight and 0.1 to 1 part by weight of polytetrafluoroethylene.
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