TWI568452B - Light curing nail polish - Google Patents

Description

Light curing nail polish

The present invention relates to a nail covering material, in particular to a photocurable nail covering material which does not contain an organic solvent.

In recent years, the demand for nail coating materials such as nail polish, armor or crystal nails has been gradually increased on the nails for the purpose of aesthetics or nail protection. The current nail covering material is formed by using an organic solvent as a solvent and dissolving a pigment and a lacquer in an organic solvent. The current nail covering material is applied to the nail first, and after the organic solvent in the current nail covering material is volatilized, a film is formed on the nail to achieve the purpose of aesthetics or protecting the nail. The film formed on the nail can be removed using an organic solvent such as acetone.

However, the organic solvent in the current nail covering material is absorbed by the user when volatilized, and a large amount of organic solvent is used for wiping off the film, so that the smell of the organic solvent used in removing the film may also cause The user's discomfort, while a large amount of organic solvents continue to contact the nails and the skin may also cause the user's physiological function to decline, endangering the user's health. In addition, organic solvents generally have a low flash point, and there is a danger of explosion when stored in the home.

In order to improve the risk of organic solvents in current nail covering materials, a nail-coated material containing no organic solvent has been developed. The organic solvent-free nail covering material comprises a photoinitiating agent, which is also called photocuring nail polish. The photocuring nail polish is used to apply photocurable nail polish to the nail first, and then use ultraviolet light. The light source or the visible light source illuminates the photocurable nail polish coated on the nail, and the photoinitiator in the photocurable nail polish is irradiated with ultraviolet light to form a radical, and the light applied to the nail is freed by the free radical. The curing nail polish is solidified and formed into a gel nail on the surface of the nail to achieve the purpose of aesthetics or protecting the nail. Since the photocurable nail polish does not contain an organic solvent, the damage of the organic solvent to the user can be avoided.

As shown in FIG. 2 , it is a schematic flow diagram of forming a gel nail on the surface of the nail by using commercially available photo-curing nail polish. The commercially available photo-curing nail polish comprises a primer 70, a color glue 71 and a top rubber 72. The primer 70, the color plastic 71 and the top rubber 72 each comprise a photoinitiator. When the commercially available photocurable nail polish is used, the primer 70 is first applied to the nail, and then the ultraviolet light 90 is used in the ultraviolet light. The primer 70 is cured by light irradiation, and then the color glue 71 is coated on the primer 70, and then the color gel 71 is solidified by ultraviolet light irradiation, and then the top rubber 72 is coated on the color gel 71. The topping agent 72 is cured by ultraviolet light irradiation, and finally the residual photo-curing nail polish is removed, that is, a gel nail is formed on the surface of the nail.

However, the commercially available photocurable nail polish is subjected to at least three sizing procedures, the primer 70 increases the adhesion to the nail, the color gel 71 provides a coloring effect, the top rubber 72 increases the brightness, and finally the surface remains light. Curing the nail polish to remove, otherwise the residual photo-curing nail polish will cause the surface of the formed gel nail to have a sticky feeling. The main reason is that the commercially available photo-curing nail polish is a cross-linking polymerization of the acrylic acid free radical-initiating photoinitiator to form a cure. Because the formed crosslinked polymer is highly sensitive to oxygen, it will be exposed to oxygen. The gas suppression causes the surface to be incompletely cured, and the sticking phenomenon occurs, so that the gel nail formed is liable to adhere to grease or foreign matter and loses luster, and the gel nail formed must be soaked and coated with a solvent. In addition, the solvent is prone to skin irritation and damage, and the commercially available photocurable nail polish forms a cumbersome and safe suspicion of the step of forming a gel nail. Therefore, there is still room for improvement in the commercially available photocurable nail polish.

As shown in Fig. 3, in order to improve the above-mentioned problem of commercially available photocurable nail polish, another commercially available photocurable nail polish 80 was developed, and the commercially available photocurable nail polish 80 only needs to be cured first. The nail polish 80 is applied to the nail, and the commercially available photocurable nail polish is cured by one ultraviolet light irradiation, and finally the residual photocurable nail polish is removed, that is, the gel nail is formed on the surface of the nail. Although the commercially available photocurable nail polish 80 greatly simplifies the steps required to form a gel nail, the commercially available photocurable nail polish 80 is still a crosslinked polymer formed by an acrylic acid free radical-initiating photoinitiator to form a cure. It is still necessary to remove the residual photo-curing nail polish, otherwise the residual photo-curing nail polish will cause a sticky feeling on the surface of the formed gel nail. Moreover, the formed gel nails must be soaked and coated with a solvent to be removed, so that the commercially available photocurable nail polish 80 still has room for improvement.

The purpose of this creation is to provide a photocurable nail polish which simplifies the step of sizing when used, and which can directly obtain a smooth gel nail surface after illumination without the need to remove the surface photocuring nail polish.

The present invention provides a photocurable nail polish comprising: a polyurethane acrylate copolymer, 2,4,6-trimethylbenzhydryldiphenyl oxide Phosphine, 1-hydroxycyclohexyl phenyl ketone, tripropylene glycol diacrylate and diethylene glycol diethyl ether acrylate; the polyurethane acrylate copolymer accounts for 30% by weight to 70% by weight based on the total weight of the photocurable nail varnish 2,4,6-trimethylbenzimidyldiphenylphosphine oxide accounts for 3 wt% to 15 wt%, 1-hydroxycyclohexylphenyl ketone accounts for 3 wt% to 10 wt%, and tripropylene glycol diacrylate accounts for 5 wt% To 20 wt%, diethylene glycol diethyl ether acrylate accounts for 5 wt% to 25 wt%.

When the light-curing nail polish of the present invention is used, it is only required to be applied to the nail first, and then the ultraviolet-curable or visible light lamp is used to irradiate the light-cured nail polish coated on the nail with ultraviolet light or visible light to apply the nail to the nail. The light-curing nail polish cures to form a gel nail, eliminating the need to remove the residual glue on the nail surface, which greatly simplifies the steps required to make the gel nail, and the formed gel nail can be directly stripped and removed. Avoid organic solvents that cause damage to the skin.

Preferably, the photocurable nail polish further comprises hydroxyethyl methacrylate and isobornyl acrylate.

Preferably, the photocurable nail varnish further comprises cellulose. Cellulose increases the film forming properties of photocurable nail polish.

Preferably, the photocurable nail varnish further comprises cerium oxide. Ceria can adjust the strippability of photocurable nail polish.

Preferably, the photocurable nail varnish further comprises a pigment.

Preferably, the polyurethane acrylate copolymer has a functionality of 2, 3 or 6 in the polyurethane acrylate copolymer.

10‧‧‧Light curing nail polish

70‧‧‧Bottom glue

71‧‧‧Color glue

72‧‧‧Top glue

80‧‧‧ commercially available light-curing nail polish

90‧‧‧ Visible light

1 is a flow chart showing the use of the photocurable nail polish of the first embodiment of the present invention. intention.

2 is a schematic view showing the flow of use of a commercially available photocurable nail polish.

Fig. 3 is a schematic view showing the flow of use of another commercially available photocurable nail polish.

Example 1

The present embodiment provides a photocurable nail polish comprising: a urethane acrylate copolymer (UAC), 2,4,6-trimethylbenzimidyldiphenylphosphine oxide (2,4, 6-trimethyl benzoyl diphenyl phosphine, TBDP), 1-hydroxy cyclohexyl phenyl methaone (HCPM), tripropylene glycol diacrylate (TGD) and diethylene glycol diethyl ether ( 2-(2-ethoxyethoxy)ethyl acrylate, EEA). The polyurethane acrylate copolymer was PHOTOMER® 6008 (available from IGM Resins) having a functionality of 2 and a molecular weight of from 15,000 Da to 40,000 Da.

Based on the total weight of the photocurable nail polish, the ratio of each component is listed in Table 1, 2, 4, 6-trimethylbenzimidyldiphenylphosphine oxide and 1-hydroxycyclohexyl phenyl ketone. As a photoinitiator, it will generate free radicals after being irradiated by ultraviolet light source or visible light source. The free radical can be used to start the polymerization of polyurethane acrylate copolymer and tripropylene glycol diacrylate and diethylene glycol diethyl ether. The high rate of polymerization of the polyurethane acrylate copolymer and the tripropylene glycol diacrylate contributes to the residue of the surface of the photocurable nail polish which is solidified by the polymerization reaction.

As shown in FIG. 1 , when the photocurable nail polish 10 of the present embodiment is used, it only needs to be applied to the nail first, and then the visible light lamp 90 is used for visible light. (Wavelength 400nm, 36W, time 1 minute) Irradiation of the photocurable adhesive 10 applied to the nail enables the photocurable nail polish 10 applied to the nail to be cured to form a gel nail without removing the nail surface residue. Glue, which greatly simplifies the steps required to make gel nails. Moreover, the gel nail formed by the embodiment can be removed by using a stripping method without using a solvent to be removed.

Example 2

The present embodiment provides a photocurable nail polish which is substantially the same as the photocurable nail polish of Example 1, except that the photocurable nail polish of the present embodiment further comprises hydroxyethyl methacrylate. (2-methacryloyloxy ethanol, ME) and isobornyl methacrylate (IM), and the polyurethane acrylate copolymer has a functionality of 2 and a molecular weight of 15,000 Da to 40,000 Da.

The ratio of the components is based on the total weight of the photocurable nail polish. Hydroxyethyl methacrylate and isobornyl acrylate further increase the adhesion between the photocurable nail polish and the nail.

Example 3

The present embodiment provides a photocurable nail polish which is substantially the same as the photocurable nail polish of Example 2, except that the photocurable nail polish of the present embodiment further comprises cellulose and silicon dioxide. Dioxide, SiO ₂ ).

The ratio of the components is based on the total weight of the photocurable nail polish. Cellulose can increase film formability, while cerium oxide can adjust strippability.

Example 4

The present embodiment provides a photocurable nail polish which is substantially the same as the photocurable nail polish of Example 3, except that the photocurable nail polish of the present embodiment further comprises a pigment. The pigment can increase the color of the formed gel nail, and the pigment used in the present embodiment is CI60725, and the ceria can also prevent pigmentation and enhance the color of the pigment on the formed gel nail.

The ratio of the components is based on the total weight of the photocurable nail polish.

Test Example 1: Appearance after hardening

Examples 1 to 4 and commercially available photocuring nail varnishes, respectively 1 (brand: UNT) and commercially available photocuring nail polish 2 (brand: Mdmmd, containing acrylate monomer, urethane acrylate resin, 1-hydroxycyclohexyl phenyl ketone ( 1-hydroxycyclohexyl phenyl ketone (starting agent 184)) was applied to a nail and irradiated with visible light (36 W, wavelength: 400 nm) for 1 minute, and the cured appearance of the gel nail formed on the nail was observed.

The test results of the photocurable nail polish of each of the examples and the commercially available photocurable nail polish 1, 2 are shown in Table 2. Wherein ◎ indicates that cracks are not observed at all by the naked eye; X indicates that small cracks can be seen.

As can be seen from the results of Table 2, the defects of the small cracks were observed after the gel nails formed by the commercially available photocurable nail polish 1 and the commercially available photocurable nail polish 2 were cured, and the light of Examples 1 to 4 was observed. The gel nail formed by curing the nail polish has no crack after appearance, and in other words, the gel nail formed by the photocurable nail polish of Examples 1 to 4 is visually beautiful.

Test Example 2: Surface dryness

The photo-curing nail varnish of Examples 1 to 4, and the commercially available photo-curing nail varnish 1 and the commercially available photo-curing nail varnish 2 were respectively applied to the nails, and irradiated with visible light (36 W, wavelength: 400 nm) for 1 minute, and the nails were observed. The surface of the gel nail formed on the surface is dry.

The test results of the photocurable nail polish of each of the examples and the commercially available photocurable nail polish 1, 2 are shown in Table 2. Among them, ◎ indicates that the surface is smooth, and no fingerprint is left by hand pressing; X indicates that the surface is sticky or greasy, and the fingerprint is used to leave fingerprints and lose luster.

As can be seen from the results of Table 2, the gel nails formed by the photocurable nail varnish of Examples 1 to 4 were compared with the commercially available photocurable nail polish 1 and the city. The surface of the gel nail formed by the sale of the cured nail polish 2 is smoother and does not leave a fingerprint by pressing with a finger.

Test Example 3: Preservation stability

The photocurable nail varnish of Examples 1 to 4 and the commercially available photocurable nail varnish 1 and the commercially available photocurable nail varnish 2 were allowed to stand at room temperature (23 ° C) for 24 hours, respectively, and the separation and precipitation were judged by visual observation. There is no.

Wherein ◎ indicates that separation and precipitation could not be observed; X indicates that separation and precipitation were observed. The test results of the respective examples and commercially available photocurable nail varnishes 1, 2 are shown in Table 2.

As can be seen from the results of Table 2, the gel nail formed by the photocurable nail polish of Examples 1 to 4 and the commercially available photocurable nail polish 1 and the gel nail formed by the commercially available photocurable nail polish 2 were allowed to stand for 24 hours. After separation and precipitation did not occur, it was shown that the photocurable nail varnish of Examples 1 to 4 still had a storage stability equivalent to that of commercially available photocurable nail varnish.

Test Example 4: Water resistance

The photocurable nail varnish of Examples 1 to 4, and the commercially available photocurable nail varnish 1 and the commercially available photocurable nail varnish 2 were respectively applied to an artificial nail of polypropylene, and irradiated with visible light (36 W, wavelength: 400 nm) for 1 minute. Thereafter, a hardened film was formed on the artificial nail, and the gel nail was immersed in warm water of 40 ° C for 8 hours, and then the cured film was peeled and dissolved by visual observation.

Wherein ◎ indicates that the cured film is not completely peeled off and dissolved; and X indicates partial peeling and dissolution of the cured film. The test results of the photocurable nail polish of each of the examples and the commercially available photocurable nail polish 1, 2 are shown in Table 2.

As can be seen from the results of Table 2, the light curing by Examples 1 to 4 The gel nail formed by the nail polish and the gel nail formed by the commercially available photocurable nail polish 1 and the commercially available photocurable nail polish 2 have good water resistance.

Test Example 5: Surface brightness

The photocurable nail varnish of Examples 1 to 4, and the commercially available photocurable nail varnish 1 and the commercially available photocurable nail varnish 2 were respectively applied to the nail, and irradiated with visible light (36 W, wavelength: 400 nm) for 1 minute. After touching the surface of the gel nail, the appearance of the gel nail formed on the nail was visually observed.

Among them, ◎ indicates that the surface is clear and shiny, and the fluorescent lamp of the ceiling is clearly reflected; ○ indicates that the surface has a certain degree of gloss residue, and the fluorescent lamp reflects the ceiling; △ indicates that the surface is slightly glossy; X indicates that the surface is dull. The test results of the photocurable nail polish of each of the examples and the commercially available photocurable nail polish 1, 2 are shown in Table 2.

As is apparent from the results of Table 2, the surface of the gel nail formed by the photocurable nail polish of Examples 1 to 4 was compared with the surface of the gel nail formed by the commercially available photocurable nail polish 1 and the commercially available photocurable nail polish 2. More lustrous, visually beautiful.

Test Example 6: Degree of damage to nails

The photocurable nail varnish of Examples 1 to 4, and commercially available photocurable nail varnish 1 and commercially available photocurable nail varnish 2 were respectively applied to the nail (coating area: a circle of about 3 mm in diameter), and visible light ( 36W, wavelength 400nm) After a minute of irradiation, a gel nail is formed, and the gel nail is peeled off from the nail, and the surface of the nail after peeling the gel nail is visually observed to determine the degree of damage to the nail by peeling the gel nail. .

The test results of the photocurable nail polish of each of the examples and the commercially available photocurable nail polish 1, 2 are shown in Table 2. Where ◎ indicates that the nail surface is not A change occurs; ○ indicates that the surface of the nail is slightly whitened; X indicates that the surface of the nail is significantly whitened.

As can be seen from the results of Table 2, the gel nail formed by the photocurable nail polish of Examples 1 to 4 was compared with the gel nail formed by the commercially available photocurable nail polish 1 and the commercially available photocurable nail polish 2 for the nail. The surface does not cause damage.

Test Example 7: Skin irritation

A light drop of the light-curing nail polish of Examples 1 to 4 and commercially available photo-curing nail polish 1 and commercially available photo-curing nail polish 2 were dropped on the skin near the finger edge, and the condition was left for 1 hour, and then washed with soapy water. The appearance of the skin is judged by the naked eye.

The test results of the photocurable nail polish of each of the examples and the commercially available photocurable nail polish 1, 2 are shown in Table 2. Wherein ◎ indicates no change in the appearance of the skin; X indicates that the skin is slightly reddened.

As can be seen from the results of Table 2, the gel nails formed by the photocurable nail varnish of Examples 1 to 4 and the gel nails formed by the commercially available photocurable nail polish 1 and the commercially available photocurable nail varnish 2 were not The skin is irritating.

According to the experimental results of the above test examples, the gel nails formed by the photocurable nail polish of Examples 1 to 4 have a considerable preservation with the gel nails formed by the commercially available photocurable nail polish 1 and the commercially available photocurable nail polish 2. Stability, water resistance and skin irritation, and no damage to nails; and the gel nails formed by the light-curing nail polish of Examples 1 to 4 are compared with commercially available photo-curing nail polish 1 and commercially available light. The gel nail formed by curing the nail polish 2 has a better performance in terms of appearance, surface dryness, and surface brightness after hardening. Therefore, the photo-curing nail polish of the present invention not only greatly shortens the steps required for making the gel nail, but also forms the gel nail which has the property of being superior to the gel nail formed by the commercially available photo-curing nail polish.

The above description is only illustrative of the present invention, and is not intended to limit the scope of the present invention. The scope of the present invention is defined by the scope of the patent application, and is not limited to the above embodiments. Any equivalents of the above-disclosed technical contents may be modified or modified to equivalent variations, without departing from the scope of the present invention. The content of the technical solution, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present creation are still belong to the creative technical solution. In the range.

10‧‧‧Light curing nail polish

90‧‧‧ Visible light

Claims (10)

A photocurable nail varnish comprising: a polyurethane acrylate copolymer, 2,4,6-trimethylbenzimidyldiphenylphosphine oxide, 1-hydroxycyclohexyl phenyl ketone, tripropylene glycol diacrylate And diethylene glycol diethyl ether acrylate; the polyurethane acrylate copolymer accounts for 30% by weight to 70% by weight, 2,4,6-trimethylbenzimidyl diphenyl based on the total weight of the photocurable nail polish The phosphine oxide accounts for 3 wt% to 15 wt%, the 1-hydroxycyclohexyl phenyl ketone accounts for 3 wt% to 10 wt%, the tripropylene glycol diacrylate accounts for 5 wt% to 20 wt%, and the diethylene glycol diethyl ether acrylate accounts for 5 wt% to 25 wt%. . The photocurable nail varnish of claim 1, wherein the photocurable nail varnish further comprises hydroxyethyl methacrylate and isobornyl acrylate. The photocurable nail varnish of claim 1, wherein the photocurable nail varnish further comprises cellulose. The photocurable nail varnish of claim 1, wherein the photocurable nail varnish further comprises cerium oxide. The photocurable nail varnish of claim 2, wherein the photocurable nail varnish further comprises cellulose. The photocurable nail varnish of claim 2, wherein the photocurable nail varnish further comprises cerium oxide. The photocurable nail varnish of claim 3, wherein the photocurable nail varnish further comprises cerium oxide. The photocurable nail varnish of claim 5, wherein the photocurable nail varnish further comprises cerium oxide. The photocurable nail varnish of any one of claims 1 to 8, wherein the photocurable nail varnish further comprises a pigment. The photocurable nail varnish of any one of claims 1 to 8, wherein the polyurethane acrylate copolymer has a functionality of 2, 3 or 6.