JPH11240820A - Nail lacquer remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a nail lacquer remover having high removing performances without providing any stickiness feeling and without whitening a nail and roughening skin of fingers and hands and scarcely having any risk of an explosion or a fire. SOLUTION: This nail lacquer remover contains 50-70 wt.% at least ethyl alcohol, 10-30 wt.% N-methyl-pyrrolidone and 10-30 wt.% one or two or more kinds selected from a plasticizer of nitrocellulose which is a nail lacquer ingredient and/or a solvent for other resin ingredients of the nail lacquer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called nail lacquer remover used for removing nail lacquer.

[0002]

2. Description of the Related Art Cosmetics for the purpose of removing nail lacquer are known under the names of "manicure remover" and "removal remover", and most of them are mainly composed of acetone as an organic solvent. Ethyl acetate, amyl acetate, methyl ethyl ketone and methyl isobutyl ketone are blended as cosolvents, and glycerin and propylene glycol are blended as humectants.

[0003] However, acetone used as a main component has a strong degreasing power, a penetrating power, and a dehydrating effect, and causes not only whitening of nails and rough skin of fingers, but also explosion due to its high volatility and low flash point. And the danger of fire.

As a nail lacquer remover for improving this, propylene carbonate and ethanol are used as main components, and a gel is formed by adding water and a small amount of hydroxypropyl cellulose. (Japanese Patent Laid-Open No. 1-242515
Japanese Patent Application Laid-Open No. 9-169621), those containing ethylene carbonate, lower monohydric alcohols and ketones (JP-A-9-169621), and pyrrolidone-based organic solvents (Examples include N-methyl-
Containing 2-pyrrolidone) and water (Japanese Unexamined Patent Publication No.
No. 109210), those containing N-methyl-2-pyrrolidone, d-limonene and ethanol (Japanese Patent Laid-Open No.
-135710).

[0005] However, the main solvent for removing nitrocellulose which is a main component of nail lacquer is propylene carbonate, ethylene carbonate, N
A high boiling solvent such as -methyl-2-pyrrolidone,
The drying property immediately after the removal of the nail lacquer is poor, and there is a drawback that a feeling of residual high boiling solvent such as "stickiness" is given to the user. In particular, contains ketones of the prior art, and is not satisfactory in improving the problems of the ketones.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a nail lacquer-removing agent which has a high removal performance, has no sticky feeling, has no whitening of nails and rough skin of fingers, and has almost no danger of explosion or fire. The purpose is to provide.

[0007]

To achieve this object, as a result of intensive studies, it has been found that ethyl alcohol, which has no harmfulness like acetone and is easy to dry, is used as a main component.
If a relatively small amount of N-methyl-2-pyrrolidone and a plasticizer of nitrocellulose, which is a component of the nail lacquer, or a solvent of another component of the nail lacquer are blended, a sufficient effect of removing the nail lacquer can be obtained. In addition to the above, it has been found that a nail lacquer-removing agent which does not cause stickiness can be obtained, and the present invention has been completed.

That is, the invention according to claim 1 of the present invention comprises at least 50 to 70% by weight of ethyl alcohol and 10 to 30% by weight of N-methyl-2-pyrrolidone.
And a nail varnish comprising one or more selected from the group consisting of a plasticizer of nitrocellulose as a nail lacquer component and / or a solvent of another resin component of the nail lacquer, in an amount of 10 to 30% by weight. It is a lacquer-removing agent.

Here, the nail lacquer is not particularly limited as long as it is a coating composition for nails containing nitrocellulose as a component, but a resin containing nitrocellulose as a main component as a resin component is preferable. Usually, nitrocellulose is mainly used, and alkyd resin and acrylic resin are used as a resin component, and ketones such as acetone, methyl ethyl ketone and methyl isopropyl ketone, and ethyl acetate and butyl acetate are used as solvents. And those using an acetate such as amyl acetate.

[0010] The content of ethyl alcohol used in the present invention must be 50 to 70% by weight. If the amount is less than 50% by weight, the drying property of the solvent immediately after the use of the remover according to the present invention (immediately after wiping) is not sufficient, and a sticky feeling remains. On the other hand, if it exceeds 70% by weight, nail lacquer removal performance is sufficient. Because it is gone. Also, N-methyl-
The content of 2-pyrrolidone must be 10 to 30% by weight. If the amount is less than 10% by weight, the performance of removing nail lacquer will not be sufficient, while if it exceeds 30% by weight, the drying property of the solvent immediately after the wiping will be insufficient and the sticky feeling will remain.

The plasticizer of nitrocellulose which is a nail lacquer component used in the present invention is nitrocellulose.
No particular limitation is imposed as long as it can be used as a plasticizer for styrene, but as in the invention of claim 2, dimethyl phthalate, dibutyl phthalate, dioctyl phthalate, diisopropyl adipate, diethyl sebacate, diisopropyl sebacate , Acetyl triethyl citrate, triethyl citrate and triacetyl glyceryl are preferred.

The solvent of the other resin component of the nail lacquer is not particularly limited as long as it can be used as a solvent of another resin (for example, an alkyd resin or an acrylic resin). The boiling point is 60-2
It is preferably light liquid isoparaffin at about 60 ° C.

These plasticizers and solvents may be used alone or in combination of two or more. However, the content of the plasticizer and / or the solvent needs to be 10 to 30% by weight. If the amount is less than 10% by weight, the performance of removing the nail lacquer will not be sufficient, while if it exceeds 70% by weight, the drying property of the solvent immediately after the wiping will be insufficient.

In the present invention, it is sufficient that the composition is at least as described above. Depending on the purpose of use, in addition to these, a penetrating agent, a dispersant, and a solubilizing agent for improving the dissolving ability of nail lacquer. Contains various surfactants as agents, coupling agents for imparting compatibility with ethyl alcohol, glycol ethers as volatilization rate regulators, alcohols as volatilization rate regulators, etc. Alternatively, in consideration of convenience at the time of use, a thickener may be added to reduce "drips". Further, for the purpose of protecting nails and fingers and moisturizing, it may contain polyhydric alcohols such as glycerin and sorbitol, glycols, animal and vegetable oils, and hydrocarbons.

The nail lacquer-removing agent of the present invention comprises ethyl alcohol as a main component without using a conventional ketone such as acetone by constituting as described in claim 1, 2 or 3. Therefore, there is no whitening of nails and rough skin of fingers, there is almost no danger of explosion or fire, moreover, the content of N-methyl-2-pyrrolidone is reduced than before and nitrocellulo, a component of nail lacquer, is reduced. A predetermined amount of a solvent of a plasticizer or other components of a nail lacquer, the reduction of the high boiling point solvent and the action of the plasticizer and / or the solvent are combined, as in the conventional method. In addition to the fact that "stickiness" based on N-methyl-2-pyrrolidone does not occur, the same effect of removing nail lacquer as in the case of using ketones is shown.

That is, the nail lacquer remover of the present invention minimizes the content of a high boiling solvent (N-methyl-2-pyrrolidone) having excellent dissolving performance for nail lacquer, Ethyl alcohol which has low solubility in-but has no adverse effects like acetone, has good compatibility with high-boiling solvents and enhances the volatility of high-boiling solvents-
By increasing the content of nitrocellulose in the nail lacquer, it is possible to maximize the dissolution function of the nail lacquer and improve the volatilization function by using a high boiling point solvent. The composition contains a solvent as a component and enhances the function of removing nail lacquer, and together with these actions, achieved a good removal function for nail lacquer and an effect of not giving the user a sticky feeling. Things.

[0017]

Embodiments of the present invention will be described below. The nail lacquer remover according to the present invention comprises at least 50 to 70% by weight, preferably 60 to 65% by weight of ethyl alcohol and 10 to 30% by weight, preferably 15 to 25% by weight of N-methyl-2-pyrrolidone. % And dimethyl phthalate, dibutyl phthalate, dioctyl phthalate, diisopropyl adipate, diethyl sebacate,
A plasticizer of nitrocellulose, which is diisopropyl sebacate, acetyltriethyl citrate, triethyl citrate or triacetylglyceryl, and / or one or more of 10 to 10 kinds of light liquid isoparaffins having a boiling point of 60 to 260 ° C. 30% by weight, preferably 1
It can be produced by mixing 0 to 20% by weight with a conventional method.

If necessary, in addition to the above,
Various surfactants as penetrants, dispersants, and solubilizers for improving the dissolving ability of the nail lacquer may be contained. Examples of these surfactants include dioctyl sulfosuccinate, polyoxyethylene hydrogenated castor oil, and the like.

Also, a glycol ether having a function as a coupling agent for imparting compatibility with ethyl alcohol or a volatilization rate regulator, alcohols as a volatilization rate regulator, etc. are contained. Alternatively, in consideration of the convenience at the time of use, a thickener may be added to reduce "drips".

Furthermore, for the purpose of protecting nails and fingers and moisturizing,
It may also contain polyhydric alcohols such as glycerin and sorbitol, glycols, animal and vegetable oils, and hydrocarbons.

The nail lacquer remover of the present invention produced as described above is contained in absorbent cotton, and the nail lacquer is coated with a commercially available nail lacquer. It can be removed, there is no whitening of nails, no rough skin on fingers, and no sticky feeling remains.

[0022]

Next, the present invention will be described more specifically with reference to examples. In addition, in Tables 1 and 2, the numerical values of the components of each removing agent indicate% by weight.

(Example) In order to obtain the composition shown in Table 1,
The components were uniformly mixed to adjust the nail lacquer-removing agent, thereby obtaining the products of the present invention (Examples 1 to 10). (Comparative Example) The components were uniformly mixed so that the compositions shown in Table 2 were obtained, and the nail lacquer-removing agent was adjusted to obtain comparative products (Comparative Examples 1 to 3).

(Test Method) A nail lacquer (Melody Make Color, made by Join Co., Ltd., nail) was applied to nails and allowed to stand for 24 hours.
10 and 1 ml of the removers of Comparative Examples 1 to 3 were gently stroked on the surface of the nail and wiped off to observe the nail lacquer removability. In addition, the whitening of the nails after the removal of the nail lacquer, the rough skin of the fingers, and the stickiness were evaluated. The results are shown in Tables 1 and 2.

(Removability) Observation was made with the naked eye, and the following four grades were evaluated. X: Very hard to fall. Δ: Slightly hard to drop. ：: falls well ◎: falls very well.

(Stickiness) The following three levels of sensory evaluation were performed. X: Stickiness is clearly recognized. Δ: Stickiness is between × and ○. ：: No stickiness was observed.

(Whitening of nails, rough skin of fingers) The following two-stage evaluation was performed by visual observation. ×: Whitening of nails and / or rough skin of fingers are clearly observed. Δ: Whitening of nails and / or rough skin of fingers are between × and ○. ：: No whitening of nails and / or rough skin of fingers are observed.

[0028]

[Table 1]

[0029]

[Table 2]

From the evaluations shown in Table 1, all of the nail lacquer removers according to the present invention (Examples 1 to 8) have good nail lacquer removal properties, no sticky feeling, and whitening of nails. Also, rough skin of fingers and hands is not recognized.

However, as shown in Table 2, the conventional remover containing ethyl alcohol, N-methyl-2-pyrrolidone and d-limonene as components (Comparative Example 4) was not effective in removing nail lacquer. Although it is excellent in that it does not cause whitening of the nails, etc., a sticky feeling is clearly recognized, and the one containing ethyl alcohol, acetone and ethylene carbonate (Comparative Example 5) has excellent removability. However, whitening or the like of the nail is clearly recognized, and a sticky feeling may remain. Next, among the removing agents containing any of the constituents according to the present invention, those having an ethyl alcohol content of more than 70% by weight (Comparative Example 1) have a removability of less than 50% by weight (Comparative Example 1). Example 3) is not sufficient in stickiness, and the other remover containing N-methyl-2-pyrrolidone (Comparative Example 2) does not have sufficient removability.

[0032]

As described above, the nail lacquer-removing agent of the present invention is constituted by the first, second or third aspect of the present invention, and thus, firstly, the conventional ketones such as acetone. No ethyl alcohol is used as the main component, so there is no whitening of nails or rough skin of fingers, there is almost no danger of explosion and fire, and secondly, it has excellent dissolving performance for nail lacquer. N- causes stickiness
By reducing the content of methyl-2-pyrrolidone and adding a predetermined amount of a nitrocellulose plasticizer and a solvent of other components of nail lacquer, the amount of the high boiling point solvent is reduced and the plasticizer and And / or the effect of the solvent described above not only does not give a "sticky feeling" based on N-methyl-2-pyrrolidone, but also exhibits an excellent nail lacquer removal effect as in the case of using ketones. .

Claims (3)

[Claims] (1) at least 50-ethyl alcohol;
70% by weight and 10 to 3 of N-methyl-2-pyrrolidone.
0% by weight and nitrocellulose as a nail lacquer component
10 to 30% by weight of one or more selected from solvents of plasticizers and / or other resin components of nail lacquer
And a nail lacquer-removing agent. 2. The plasticizer for nitrocellulose, which is a nail lacquer component, comprises dimethyl phthalate, dibutyl phthalate, dioctyl phthalate, diisopropyl adipate, diethyl sebacate, diisopropyl sebacate,
2. An acetyltriethyl citrate, triethyl citrate, and triacetylglyceryl.
The nail lacquer-removing agent according to the above. 3. The nail lacquer remover according to claim 1, wherein the solvent of the other resin component of the nail lacquer is light liquid isoparaffin having a boiling point of about 60 to 260 ° C.