TW201627032A - Removal agent for removing nail polish coating - Google Patents

Abstract

A removal agent for removing nail polish coating is disclosed, which comprises Hydroxyethyl Cellulose (HEC) and solvent, wherein the solvent can be acetone, Methyl Ethyl Ketone (MEK), ethyl acetate or a combination thereof. When the removal agent is applied and coated onto the coating layer of the nail surface, a surface thin film will be formed naturally once the removing agent has contacted air for preventing the solvent from vaporization, thereby enabling the solvent not to be easily vaporized and skipping complicated removing steps including aluminum foils covering. Moreover, the removing agent is able to remove effectively the coating layer formed by nail gel, and also remove easily the coating layer formed by nail polish.

Description

Remover for removing the surface coating of nails

The present invention relates to a remover for removing a surface coating of a nail, and more particularly to a discharge suitable for removing a coating formed by a nail polish or a nail gel. Remover.

Currently, commercially available nail varnishes can be roughly classified into general solvent type nail varnishes and phototherapy nail varnishes. The main components of general solvent-based nail polish are pigments, solvents and gelling agents; the main components of phototherapy nail polish are photocrosslinkable monomers, solvents, gelling agents, and the like.

In the past, most of the solvent-based nail polishes were removed directly using a polar solvent (such as acetone), but this method may affect the health of the user because the solvent is easily volatilized. Based on the foregoing problems, many patents present a gel-like solvent-based nail polish remover. For example, US 4,197,212 discloses a solvent based nail polish remover comprising 85.0 to 99.5% acetone or ethyl acetate and 0.5 to 15% gelling agent. The gelling agent includes the following three types: (A) cellulose derivatives such as hydroxypropyl cellulose, cellulose acetate butyrate, and ethyl hydroxyethyl cellulose ( Ethyl hydroxyethyl cellulose); (B) synthetic derivatives such as polystyrene, and methyl vinyl ether and maleic acid a copolymer of maleic anhydride; (C) an inorganic material such as colloidal silica. Among the above various gelling agents, acetate of hydroxypropylcellulose is preferred. Since this patent is based on a solvent and is used to remove solvent-based nail varnish, it is necessary to use hydroxypropylcellulose which is hydrophilic.

US 6,071,865 discloses a gel-like nail polish removal composition comprising 5-85% by weight of a fatty acid methyl ester or fatty acid ethyl ester as a skin conditioning and cleansing agent, and 15 to 95% by weight of N-methyl-2-pyrrolidone as a solvent (N-methyl-2-pyrrolidone, hereinafter referred to as NMP), 1 to 10% by weight of a surfactant, and not more than 5% by weight of a gelling agent (for example, butyl cellulose, etc.). This patent requires the use of NMP, which has been banned in the European Union, as a solvent and may be toxic to the environment.

The removers of the above two patents are designed to remove the coating formed by solvent-based nail polish, and are not designed for phototherapy nail polish. Because phototherapy nail polish contains monomer, after UV irradiation, the monomer will crosslink to form a polymer with high viscosity and toughness; currently, the way to remove the photomask is to use the infiltrated acetone. Place the sponge on the coating, then wrap the knuckles on the nail with tin foil. After covering for a while, wipe off the coating with a cotton cloth or a tool. The steps of the above removal method are cumbersome, and in addition to waiting for a long time, there is still a problem of solvent evaporation; and because acetone is liquid, it will simultaneously erode the skin and affect the health of the user.

At present, there is no remover for removing the coating formed by phototherapy nail polish, and with the hot sale of phototherapy nail polish, if still The above-mentioned removal method is bound to continue to affect the health of the user. Therefore, there is an urgent need for further improvement and development of the remover for removing the coating formed by the phototherapy nail polish.

Since the texture of the coating formed by the phototherapy nail polish is tough, in addition to the use of a highly polar solvent, the removal agent is required to continuously wet the coating, and to maintain the health of the user while avoiding the solvent. Volatile conditions arise. Based on the above requirements, the applicant of the present invention hopes to design a surface film which has a suitable viscosity, can be applied and is in contact with air to avoid solvent evaporation, and allows the remover of the lower layer of the film to continuously wet the coating.

However, after the experiment of the present applicant, it was found that although both of the above patents use a cellulose derivative as a gelling agent, the enumerated gelling agent is mixed with a polar solvent such as acetone, except that it may not be miscible with the solvent. It is also impossible to make the remover have an appropriate viscosity that does not flow easily, and can completely cover the surface of the nail coating and form a surface film after contact with air. Therefore, the removers of the above two patents cannot be applied to remove the phototherapy nail polish. A coating is formed.

Accordingly, it is an object of the present invention to provide a remover for removing a surface coating of a nail from a surface which forms a film and which is suitable for removing a coating formed by phototherapy nail polish.

Thus, the present invention is a remover for removing a surface coating of a nail, comprising ethyl cellulose and a solvent. The solvent is selected from the group consisting of acetone, methyl ethyl ketone, ethyl acetate or a combination of the foregoing.

The effect of the present invention is that the remover for removing the surface coating of the nail of the present invention can have a viscosity conforming to the subsequent use due to the inclusion of ethyl cellulose and a specific solvent, and when the remover of the present invention is applied to the surface of the nail On the coating, after contact with air, a surface film will naturally form without being prone to solvent evaporation, and the release agent of the lower layer of the film can continue to wet the coating. Therefore, the removing agent of the present invention can not only effectively remove the coating formed by the phototherapy nail polish, but also avoid the solvent evaporation, and omit the tedious removal steps such as covering the foil paper, and can easily remove the coating formed by the general nail polish.

Hereinafter, the present invention will be described in detail. The removing agent for removing the surface coating of the nail of the present invention comprises ethyl cellulose and a solvent.

Preferably, the ethyl cellulose is used in an amount ranging from 5 to 25 wt%, and the solvent is used in an amount ranging from 75 to 95 wt%, based on 100 wt% of the total weight of the ethyl cellulose and the solvent. More preferably, the ethyl cellulose is used in an amount ranging from 5 to 20% by weight, and the solvent is used in an amount ranging from 80 to 95% by weight. When the amount of ethyl cellulose is less than 5% by weight, the viscosity of the remover is insufficient and no surface film is formed upon contact with air after coating; when the amount of ethyl cellulose is more than 25 wt%, the remover The viscosity may be too high and the cost of the remover will increase.

Preferably, when the replenishing agent is mainly composed of ethyl cellulose and a solvent, the repellent has a viscosity range of 1000 to 25,000 cp.

Preferably, the remover further comprises a surfactant. The surfactant is mainly used for improving the hydrophilicity of the remover, so as to remove the surface coating of the nail by using water washing, so it is preferred to use a hydrophilic interface. Sex agent.

The surfactant may be, for example, an anionic surfactant, a cationic surfactant, a nonionic surfactant, or the like. Preferably, the surfactant is a nonionic surfactant.

The nonionic surfactant may be, for example, polyoxyethylene alkyl ether, polyoxyethylene alkylphenol ether, polyoxyethylene styrylaryl ether, polyol poly Polyoxyethylene polyol ether, polyoxyethylene alkyl amine ether, castor oil polyoxyethylene ether, polyethylene glycol monomethyl ether, A sorbitan fatty acid ester, a polyoxyethylene sorbitan fatty acid ester, a polyethylene glycol, an alkanol amide, or the like. Preferably, the alkanolamine is coconut diethanol amide. In one embodiment of the invention, the nonionic surfactant is cocodiethanolamine.

Preferably, the surfactant is used in an amount ranging from 1 to 5 parts by weight based on 100 parts by weight of the total weight of the ethyl cellulose and the solvent. When the amount of the surfactant is less than 1 part by weight, the hydrophilicity of the remover will be insufficient; when the amount of the surfactant is more than 5 parts by weight, the original viscosity of the remover may be affected, and Smooth formation of the surface film is more likely to reduce the lipophilicity of the remover and fail to remove the coating successfully.

Preferably, when the remover further comprises a surfactant, the remover has a viscosity range of 10,000 to 50,000 cp.

In one embodiment of the invention, the remover comprises ethyl cellulose, acetone, and cocodiethanolamine.

Preferably, the remover further comprises an additive. The additive comprises any agent that protects or nourishes the nail, or helps to remove the coating, or enhances aesthetics and desire to purchase, such as, but not limited to, pigments, perfumes, flavors, nutrients, and the like.

The preparation method of the present invention is carried out by mixing ethyl cellulose with a solvent, and mixing may be carried out by any known machine (e.g., a mixer, a homogenizer, a kneader, a three-roller, a kneader, etc.). Preferably, the mixing temperature ranges from 20 to 35 °C.

When the removing agent of the present invention removes the surface coating of the nail, the removing agent is applied to the surface coating of the nail. At this time, when the removing agent is in contact with the air, a surface film is formed; after standing for a while, Then, wipe it with cotton cloth, peel off with other tools (such as scraper) or wash it, and remove the nail surface coating and remover.

The invention is further illustrated by the following examples, but it should be understood that this embodiment is intended to be illustrative only and not to be construed as limiting.

<Example> [Examples 1 to 4]

According to the composition and dosage of Table 1 below, ethyl cellulose, acetone and selective component coconut oil diethanolamine were placed in a homogenizer (model IKA T65D) and mixed at a high speed at 25 ° C and 6000 rpm. The removers of Examples 1 to 4 were prepared after 60 minutes.

[Comparative Examples 1 to 11]

According to the composition and dosage of Table 1 below, various gelling agents [including ethyl cellulose, hydroxyethyl cellulose, methyl cellulose, carbomer, carboxymethyl cellulose, cellulose acetate) And nitrocellulose], acetone and selective component coconut oil diethanolamine were placed in a homogenizer (model IKA T65D) and mixed at a high speed at 25 ° C, 6000 rpm, after 60 minutes to obtain Comparative Example 1 to 11 remover.

Table 1 a. Calculated by using the gelling agent and acetone in an amount of 100% by weight. b. Calculated by using the gelling agent and acetone in an amount of 100 parts by weight. c is not added.

[test]

The removal agents of Examples 1 to 4 and Comparative Examples 1 to 11 were respectively subjected to the following The test, in which, when it is incompatible with acetone, the film formation and the removal effect test will not be performed; when the film formation test is not good, the removal effect test will not be performed. The test results are summarized in Table 2.

1. Viscosity: The viscosity test was carried out at 25 ° C using a viscometer (purchased from Quanhua Precision Co., Ltd., TV25 viscometer).

2. Film-forming property: The release agent was applied onto a glass plate using a film applicator, and the coating thickness was 500 μm, and it was dried in the air to a film thickness of 400 μm, and the film formation state was observed.

3. Dismounting effect: Various commercially available phototherapy nail polishes (such as OPI, Nail harmony, ORLY, Cuccio, etc.) were used as test samples for testing. The test sample was uniformly coated on a glass plate (film thickness: 200 μm) by an applicator, and then cured by ultraviolet light for 3 minutes to form a test coating. Then, the unloading agent was uniformly coated on the test coating (film thickness: 500 μm), and after 5 to 10 minutes, it was observed whether swelling and gradual erosion and peeling occurred, and after 20 minutes, the pressure was 1 kg/cm ² . The running water was rinsed (the flowing water column was at a 45 degree angle to the test coating) for 1 minute, and the area of the coating remaining on the glass plate was observed. When the coating area is less than 10% or less, it indicates that the removal effect test passed.

Table 2

[result]

Based on the results of Tables 1 and 2, it was confirmed that the repellents of Examples 1 to 4 were naturally coated with a surface film after being coated and contacted with air, thereby avoiding solvent evaporation and more effectively removing the coating. In contrast, in Comparative Examples 1 and 2, since the amount of ethyl cellulose was too low, film formation was impossible. The amount of the cocodiethanolamine of Comparative Example 3 was too high, resulting in insufficient lipophilicity to effectively dissolve the resin in the phototherapy nail polish. Comparative Examples 4 to 11 were not able to form a film or were immiscible with acetone because they did not use ethyl cellulose, so that the coating could not be effectively removed.

It should be particularly noted that the repellents of Examples 3 and 4 have better hydrophilicity because they further contain cocodiethanolamine, and can be directly washed by water, that is, the nail surface can be smoothed. Although the remover of Example 1 has an adhesive residue, the adhesive can be immediately removed by simply wiping it through the cotton cloth.

In summary, the remover for removing the surface coating of the nail of the present invention can have a viscosity conforming to the subsequent use due to the inclusion of ethyl cellulose and a specific solvent, and when the remover of the present invention is applied to the surface of the nail After the layer is in contact with the air, a surface film is naturally formed without volatilizing the solvent, and the release agent of the lower layer of the film can be continuously wetted by the coating, so that the object of the present invention can be achieved.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and patent specification content of the present invention, All remain within the scope of the invention patent.

Claims (9)

A remover for removing a surface coating of a nail, comprising: ethyl cellulose and a solvent, wherein the solvent is selected from the group consisting of acetone, methyl ethyl ketone, ethyl acetate or a combination of the foregoing. The removing agent for removing a surface coating of a nail according to claim 1, wherein the ethyl cellulose is used in an amount ranging from 5 to 25% by weight based on 100% by weight of the total weight of the ethyl cellulose and the solvent. And the amount of the solvent is in the range of 75 to 95% by weight. The remover for removing the surface coating of the nail according to claim 1 has a viscosity range of 1000 to 25,000 cp. A remover for removing a nail surface coating as described in claim 1 further comprising a surfactant. The remover for removing a nail surface coating according to claim 4, wherein the surfactant is a nonionic surfactant. The remover for removing a nail surface coating according to claim 5, wherein the nonionic surfactant is cocodiethanolamine. The removing agent for removing a surface coating of a nail according to claim 4, wherein the surfactant is used in an amount ranging from 1 to 5 parts by weight based on 100 parts by weight of the total weight of the ethyl cellulose and the solvent. . The remover for removing the surface coating of the nail according to claim 4 has a viscosity range of 10,000 to 50,000 cp. A remover for removing a surface coating of a nail according to claim 6, wherein the solvent is acetone.