JP2003137735A - Enamel remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a stable sol-like enamel remover having a characteristic beautiful appearance. SOLUTION: This sol-like enamel remover comprising water and an organic solvent compatible with the water as dispersing mediums and a silica sol having an electrical conductivity of 0 to 560 μS/cm is characterized by containing the silica containing an average particle diameter of 30 to 200 nm in an amount of 1.5 to 9 wt.% based on the total amount of the enamel remover and containing the organic solvent in an amount of 55 to 93 wt.% based on the total amount of the enamel remover.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to so-called enamel removers used for removing nail enamel. More specifically, it relates to a sol-like enamel remover having a beautiful dichroic appearance.

[0002]

2. Description of the Related Art Most nail enamel is mainly composed of nitrocellulose, and as an enamel remover for removing it, ketones such as acetone and methyl ethyl ketone, and acetic acid esters such as ethyl acetate and butyl acetate are used. In general, a base material for removing a cyclic ester compound such as propylene carbonate and a liquid base material in which water and oil are mixed. However, in recent years, consumers' demands for cosmetics have diversified, and in addition to the functions possessed by products, cosmetics with a beautiful appearance have been desired, and many developments have been made. For example, coloring is performed using a dye, but this is not interesting because the color is transparent and uniform. In addition, fine cellulose is blended mainly for the purpose of obtaining white turbidity, but it does not show color and lacks beauty (Japanese Patent Laid-Open No. 6-1710). Although a gel-like remover using silica (silicic acid anhydride) is disclosed as an application example using a silica dispersion, it does not have a specific coloring effect (Japanese Patent Laid-Open No. 2000-95646). Further, a cosmetic containing a fine particle dispersion having water and / or an organic solvent having an electric conductivity of 560 μS / cm or less as a dispersion medium is disclosed. This is an opal-like play color, and due to the formation of crystallites of 0.1 to 10 mm with a regular arrangement, a play color phenomenon appears due to light interference by parallel planes inside the structure. is there. However, this play color phenomenon disappears and is unstable when vibration is applied to the dispersion liquid (Japanese Patent Laid-Open No. 6-100432).
However, there is no application example for enamel remover.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a sol-like enamel remover having a unique beautiful appearance and stable state.

[0004]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventor has found that a specific amount of a specific amount is specified in a dispersion medium composed of water and an organic solvent compatible with a specific amount of water. The inventors have found that the above problems can be solved by preparing a deionized silica sol in which silica particles are dispersed, and have completed the present invention.

That is, the present invention uses an organic solvent compatible with and water as a dispersion medium and has an electric conductivity of 0 to 560 μS / cm.
A sol-like enamel remover containing silica sol, wherein the silica has an average particle diameter of 30 to 200 nm, the silica content is 1.5 to 9 mass% in the total amount of the enamel remover, and The sol-like enamel remover has a solvent content of 55 to 93% by mass based on the total amount of the enamel remover.

[0006] According to the present invention, it has a peculiar beautiful appearance, which is translucent and has a dichroism in which the color is different depending on the viewing angle,
Moreover, a sol-like enamel remover which is uniform and does not change its color tone due to vibration can be obtained.

In the present invention, a silica sol having water and an organic solvent compatible with water as a dispersion medium and an electric conductivity of 0 to 560 μS / cm has a conductivity of 0 to 56 with water as a dispersion medium.
It can be obtained by mixing 0 μS / cm of silica sol and an organic solvent compatible with water.

The water-miscible organic solvent preferably contains at least acetone. Examples of the organic solvent other than acetone include methyl ethyl ketone, ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, methyl lactate and lactic acid. It is preferable that one or more selected from the group consisting of ethyl, propylene carbonate, diacetone alcohol, ethyl alcohol, butyl cellosolve and diethylene glycol diethyl ether.

In the present invention, it is preferable to further include a wetting agent, and the wetting agent includes glycerin, propylene glycol, 1,3-butylene glycol, polyethylene glycol, sodium hyaluronate, 2-pyrrolidone-5-carboxylic acid. It is preferably one or more selected from the group consisting of sodium acid salt, sodium lactate, liquid paraffin, squalane, ester oil and silicone oil.

The content of the wetting agent is 1 to the organic solvent.
It is preferably 10% by mass.

The sol in the present invention is one in which silica colloidal particles are dispersed in a liquid and exhibit fluidity.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below.

The sol-like enamel remover of the present invention contains a silica sol containing water and an organic solvent compatible with water as a dispersion medium, and the silica sol has contaminant ions (cations and anions) removed from the sol. , Highly deionized. By highly deionizing the contaminating ions in the sol, the electric double layer on the surface of the silica particles expands, and mutual repulsive force acts between the particles. As a result, the dispersed state of the colloidal particles is stabilized. The degree of deionization is indicated by electric conductivity, and it is necessary to set the electric conductivity in the range of 0 to 560 μS / cm.

For the deionization of the silica sol, conventionally known methods are adopted, but it is preferable to use methods such as electrophoresis, ion exchange and ultrafiltration. For example, silica sol is subjected to ion exchange treatment with a cation exchange resin and an anion exchange resin to remove contaminant ions. Specifically, for example, by passing the sol through a column filled with a cation exchange resin and an anion exchange resin, or by mixing the ion exchange resin in the sol and stirring, and separating the resin The method is taken.

In the present invention, the silica sol having water and an organic solvent compatible with water as a dispersion medium is a silica sol having water as a dispersion medium (also referred to as silica hydrosol) having an electric conductivity of 0 to 560 μS by the above method. It can be obtained by mixing with an organic solvent compatible with water after deionization up to the range of / cm. A silica sol having water as a dispersion medium can be obtained by a conventionally known method, for example, by obtaining water glass obtained by treating silica with sodium hydroxide, by neutralizing the water glass with an inorganic acid such as hydrochloric acid or nitric acid. Is preferred. The generated salts such as sodium chloride and sodium nitrate, for example, ion exchange, ultrafiltration, as in the above deionization method,
It is desalted by electrophoresis.

The silica dispersion concentration of the silica sol is not particularly limited, but is preferably 5 to 40% by mass from the viewpoint of usability. More preferably, it is 10 to 30 mass%. One type or two or more types of silica sol are arbitrarily selected and blended.

As the silica sol, a commercially available product can be used, and examples of the commercially available product include, for example, Cataloid SI-4.
5P, SI-80P, SI-100P, SI-1
60P, SI-200P (above, manufactured by Catalyst Kasei Kogyo Co., Ltd.) and the like, which are deionized and used. Deionized silica sol is also commercially available, and it is also possible to use it. Examples of commercially available products include Opalesque (manufactured by Catalysts & Chemicals Industry Co., Ltd.) and the like.

The organic solvent contained as a dispersion medium for the sol-like enamel remover containing the silica sol of the present invention is an organic solvent compatible with water. The organic solvents may be used alone or as a mixture, and when the mixed solvent is used, it is sufficient that the mixed solvent is compatible with water. Further, the organic solvent used in the present invention is preferably one that dissolves the resin blended in the nail enamel, and in particular, the coating of nitrocellulose-based nail enamel widely used as a film forming agent for nail enamel. Those capable of dissolving and removing the membrane are preferable. Examples of the organic solvent include ketones such as acetone and methyl ethyl ketone, ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, cellosolve acetate, acyl acetate, acetic acid esters such as ethyl glycol acetate and methyl glycol acetate, ethyl lactate. Lactic acid esters such as butyl lactate and methyl lactate, cyclic ester compounds such as propylene carbonate, alcohols such as diacetone alcohol, ethyl alcohol, methyl alcohol and butyl alcohol,
Examples include ethers such as carbitol, butyl cellosolve, and diethylene glycol diethyl ether, and one or more of these organic solvents are used within a range compatible with water.

In the present invention, it is preferable to contain at least acetone, which is particularly excellent in the solubility of nitrocellulose and the compatibility with water. Although the content of acetone can be arbitrarily set, it is 50 to 100% by mass in the total amount of the organic solvent.
Is preferred. Examples of the organic solvent other than acetone when mixed with acetone include methyl ethyl ketone, ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, methyl lactate, ethyl lactate, propylene carbonate and diacetone among the above organic solvents. It is preferably one or more selected from the group consisting of alcohol, ethyl alcohol, butyl cellosolve and diethylene glycol diethyl ether. The organic solvent is contained in an amount of 55 to 93 mass% in the total amount of the sol-like enamel remover. When the content is less than 55% by mass, the effect of dissolving and removing the coating film of nail enamel is poor, which is not preferable. Also,
If it exceeds 93 mass%, it is not preferable in terms of safety. As a safe enamel remover, the nail enamel coating film is easily dissolved and removed, and it is preferable to add 65 to 85% by mass.

The silica contained in the present invention has an average particle size of 30 to 200 nm. If it exceeds 200 nm, the two-color effect of the appearance cannot be obtained, and the precipitation of silica causes the stability to deteriorate. On the other hand, if it is less than 30 nm, the two-color effect of appearance cannot be obtained.

Further, the content of silica is 1.5 to 9% by mass based on the total amount of the sol-like enamel remover. If it is less than 1.5% by mass, a sufficient coloring effect cannot be obtained, and if it exceeds 9% by mass, the feeling in use is deteriorated, which is not preferable.

The sol-like enamel remover of the present invention preferably further contains a wetting agent. By blending the wetting agent, it is possible to prevent the nails from becoming white when the enamel remover is used. Examples of the wetting agent include glycerin, propylene glycol, 1,3-butylene glycol (1,3-BG), polyethylene glycol, polyhydric alcohols such as sorbitol, hyaluronic acid salts such as sodium hyaluronate, and 2-pyrrolidone-5. Examples thereof include pyrrolidone carboxylate such as sodium carboxylate, moisturizer such as lactate such as sodium lactate, liquid oil such as liquid paraffin, squalane, ester oil and the like. Among these, glycerin, propylene glycol, 1,3-butylene glycol, polyethylene glycol, sodium hyaluronate, and 2-pyrrolidone-5 are particularly preferable.
It is preferably one or more selected from the group consisting of sodium carboxylate, sodium lactate, liquid paraffin, squalane, ester oil and silicone oil.

The content of the wetting agent is preferably 1 to 10% by mass with respect to the content of the organic solvent. If the amount is more than 10% by mass based on the organic solvent, it becomes difficult to remove the nail enamel, and a sticky feeling tends to occur.

The sol-like enamel remover of the present invention contains, in addition to the above-mentioned components, other components usually used for enamel removers, such as solid oil, perfume, ultraviolet absorber, colorant, beauty solvent and antioxidant. , Nutrients, brighteners, preservatives, abrasive fine particles, phospholipids, etc. can be appropriately added as needed within the range not impairing the effects of the present invention.

The sol-like enamel remover of the present invention is
It can be produced by blending and mixing the respective components, preferably by the method described below, but is not limited thereto. If necessary, a wetting agent is added to the organic solvent, and silica sol is added thereto, and the mixture is stirred and mixed to make it uniform. The above operation can be performed under pressure, normal pressure or reduced pressure. The temperature is not limited as long as each component is stable. Usually, it can be performed at room temperature to about 80 ° C. Stirring process is propeller, homomixer, blender,
Using a normal stirrer such as a disper, the rotation speed is 200-
It may be performed at about 6,000 rpm. The sol-like enamel remover thus obtained is a translucent liquid, not a gel.

[0026]

EXAMPLES The present invention will be specifically described with reference to the following examples. The blending amount is% by mass. Prior to the description of the examples, the effect test method used in the present invention will be described.

(Two-color Effect of Appearance 1) The color tone when the enamel remover was observed at room temperature was evaluated organoleptically. As for the evaluation, those with dichroism whose colors differ depending on the viewing angle are
Among them, those having particularly good dichroism were marked with ⊚. The evaluation criteria are as follows. (Evaluation Criteria) A: There is particularly good dichroism. ◯: There is dichroism. X: There is no dichroism.

(Two-color Effect of Appearance 2) The transmitted color and the reflected color when the sample placed in the transparent bottle was irradiated with light were visually observed from a position 50 cm away from the light source. The samples are installed in the following three locations A, B, and C. That is, a line connecting the light source and the observation position (hereinafter referred to as a reference line).
Above the light source and the observation position, a position where the transmitted color can be observed (position A), a line passing through a position 20 cm away from the light source on the reference line and orthogonal to the reference line, and a line passing through the light source and the reference line At one of the intersections with the line at an angle of 20 degrees (position B), and on the line that passes through the light source and is orthogonal to the reference line, one position (position There are 3 places in C). Here, the transmission color of the sample at the position A is "transmission color", the reflection color of the sample at the position B is "reflection color 1", and the reflection color of the sample at the position C is "reflection color 2".

(Transparency) The enamel remover was observed at room temperature to evaluate the transparency. (Evaluation Criteria) ○: The appearance is semi-transparent, and it is aesthetic and beautiful. X: Appearance is opaque or transparent, and is not aesthetic.

(Removing power) Shiseido Nail Enamel NA R
After applying D534 to the nail and drying, the easiness of removal was evaluated with an enamel remover. (Evaluation criteria) Good: Good. X: Bad.

(Residue after powder) After the removal power was evaluated, it was subsequently evaluated whether or not there was a residue after powder. (Evaluation criteria) ○: None. X: Yes

(Stability over time) High temperature (40 ° C.), low temperature (5
(C) and each room temperature for 1 month, and then observed and evaluated for morphology. (Evaluation Criteria) A: The shape immediately after production is maintained and stability is good. Δ: Slightly changed in morphology and slightly stable. X: The morphology changed and the stability was poor.

(Vibration Stability) After manufacturing the enamel remover, the enamel remover was placed in a bottle, allowed to stand still, and confirmed for dichroism. The bottle was shaken for vibration to observe changes in dichroism. (Evaluation Criteria) O: No change in dichroism. X: The dichroism disappeared.

Examples 1 to 6 and Comparative Examples 1 and 2 5.0% by mass of silica sol (electrical conductivity 200 μS / cm) in which 20% by mass of silica having an average particle diameter of 60 nm is dispersed in water (Comparative Example 1), 7.5% by mass (Example 1), 14.0% by mass
(Example 2), 17.0 mass% (Example 3), 21.0
Mass% (Example 4), 28.0 mass% (Example 5), 4
0.0 mass% (Example 6), 50.0 mass% (Comparative Example 2) (above, in the total amount of enamel remover) (silica content is 1.0, 1.5 in the total amount of enamel remover, respectively)
2.8, 3.4, 4.2, 5.6, 8.0, 10.0% by mass) and 95.0% by mass of acetone containing 3.6% by mass of 1,3-butylene glycol. % (Comparative Example 1), 92.5% by mass (Example 1), 86.0% by mass
(Example 2), 83.0 mass% (Example 3), 79.0
Mass% (Example 4), 72.0 mass% (Example 5), 6
0.0% by mass (Example 6), 50.0% by mass (Comparative Example 2) (above, in the total amount of enamel remover) (The 1,3-butylene glycol amount is 3.42, 3.3 in the total amount of enamel remover, respectively. 3.1, 3.0, 2.8, 2.
(6, 2.2, 1.8% by mass) was added and stirred at room temperature to obtain an enamel remover. Tables 1 and 2 show the content of each component. The evaluation results are shown in the same Table 1 and Table 2.

(Comparative Examples 3-5) In the same manner as Comparative Examples 1-2, enamel removers of Comparative Examples 3-5 were prepared. Table 2 shows the content of each component. Also, the evaluation results are shown in the same Table 2. The electrical conductivity of silica sol dispersed in water and the particle size of silica used those shown in Table 2.

[0036]

[Table 1]

(Note 1) Average particle size: 60 nm

As is clear from Table 1, all of the sol-like enamel removers of Examples 1 to 6 have a semi-transparent and dichroic appearance, are excellent in removing power, have no residual powder, and have aged. It was excellent in stability. Further, the color tone of the product of the present invention did not change at all even when vibration was applied, and had a constant color tone at any time.

[0039]

[Table 2]

[0040] (Note 1) Average particle size: 60 nm (Note 2) Average particle size: 250 nm (Note 3) Average particle size: 10 nm

As is apparent from Table 2, Comparative Examples 1 and 2 in which the content of silica was out of the range of 1.5 to 9% by mass.
(In Comparative Example 2, the content of the organic solvent is also outside the range of 55 to 93 mass%.), And the electric conductivity is 0 to 560 μS /.
Comparative Example 3 containing silica sol outside the range of cm,
Comparative Examples 4 and 5 in which the average particle size of silica is out of the range of 30 to 200 nm, and Comparative Example 6 in which the content of the organic solvent is out of the range of 55 to 93% by mass, all exhibit all the effects of the present invention. It was something that could not be demonstrated.

The sol-like enamel remover of the present invention having various formulations will be shown below as examples. In addition, when the above-mentioned effect test was conducted on these, excellent results were obtained in all cases.

[0043]   [Example 7] Enamel remover       Ingredient amount (% by mass) (1) Silica (Note 1) 5.0 (2) Water balance (3) Acetone 72.0 (4) 1,3-BG 3.0 (5) Perfume proper amount (Note 1) Average particle size: 60 nm

(Production method) A silica sol (electrical conductivity 80 μS / cm) comprising water (1) and (2) as a dispersion medium.
In addition, the mixture of (3) to (5) is added, water and an organic solvent compatible with water are used as a dispersion medium, and the electric conductivity is 80 μS /
An enamel remover consisting of cm3 of silica sol was prepared.

[0045]   [Example 8] Enamel remover       Ingredient amount (% by mass) (1) Silica (Note 1) 5.0 (2) Water balance (3) Acetone 72.0 (4) 1,3-BG 3.0 (5) Perfume proper amount (Note 1) Average particle size: 100 nm

(Manufacturing Method) A silica sol having an electric conductivity of 200 μS / cm as a dispersion medium was prepared according to the method of Example 7.

[0047]   [Example 9] Enamel remover       Ingredient amount (% by mass) (1) Silica (Note 1) 9.0 (2) Water balance (3) Acetone 55.5 (4) Ethyl acetate 3.0 (5) Isopropyl acetate 2.0 (6) Butyl acetate 1.0 (7) Sodium 2-pyrrolidone-5-carboxylate 1.5 (8) Sodium lactate 1.0 (9) Suitable amount of fragrance (Note 1) Average particle size: 60 nm

(Manufacturing Method) A silica sol having an electric conductivity of 200 μS / cm as a dispersion medium was prepared according to the method of Example 7.

[0049]   [Example 10] Enamel remover       Ingredient amount (% by mass) (1) Silica (Note 1) 4.0 (2) Water balance (3) Acetone 43.8 (4) Methyl ethyl ketone 10.0 (5) Ethyl alcohol 8.0 (6) Propyl acetate 2.0 (7) Ethyl lactate 8.0 (8) Propylene glycol 2.2 (9) Suitable amount of fragrance (Note 1) Average particle size: 60 nm

(Production Method) A silica sol having an electric conductivity of 200 μS / cm as a dispersion medium was prepared according to the method of Example 7.

[0051]   [Example 11] Enamel remover       Ingredient amount (% by mass) (1) Silica (Note 1) 1.8 (2) Water balance (3) Acetone 74.3 (4) Ethyl acetate 15.0 (5) Butyl cellosolve 3.6 (6) Dipropylene glycol 0.5 (7) Glycerin 0.5 (8) Perfume proper amount (Note 1) Average particle size: 60 nm

(Manufacturing Method) A silica sol having an electric conductivity of 200 μS / cm as a dispersion medium was prepared according to the method of Example 7.

[0053]   [Example 12] Enamel remover       Ingredient amount (% by mass) (1) Silica (Note 1) 4.5 (2) Water balance (3) Acetone 63.3 (4) Ethyl acetate 8.2 (5) Methyl lactate 1.5 (6) Diethylene glycol diethyl ether 1.5 (7) Sodium hyaluronate 2.5 (8) Squalane 0.5 (9) Suitable amount of fragrance (Note 1) Average particle size: 60 nm

(Production Method) A silica sol having an electric conductivity of 200 μS / cm as a dispersion medium was prepared according to the method of Example 7.

[0055]   [Example 13] Enamel remover       Ingredient amount (% by mass) (1) Silica (Note 1) 2.2 (2) Water balance (3) Acetone 63.8 (4) Butyl acetate 5.9 (5) Isobutyl acetate 10.0 (6) Propylene carbonate 7.0 (7) Diacetone alcohol 0.3 (8) Polyethylene glycol 300 4.0 (9) Liquid paraffin 0.5 (10) Diisostearyl malate 1.5 (11) Dimethyl polysiloxane 1.0 (12) Perfume proper amount (Note 1) Average particle size: 60 nm

(Manufacturing Method) A silica sol having an electric conductivity of 200 μS / cm as a dispersion medium was prepared according to the method of Example 7.

[0057]

As described above in detail, according to the present invention,
A semi-transparent sol-like enamel remover which is not gel-like and has a specific beautiful appearance with dichroism, an excellent effect of removing enamel, excellent stability over time, and a good feeling in use.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tsuneo Suhara             2-2-1 Hayabuchi, Tsuzuki Ward, Yokohama City, Kanagawa Prefecture             Shiseido Research Center (Shin-Yokohama)             Within (72) Inventor Hiroshi Ishikawa             2-2-1 Hayabuchi, Tsuzuki Ward, Yokohama City, Kanagawa Prefecture             Shiseido Research Center (Shin-Yokohama)             Within F-term (reference) 4C083 AB051 AB17 AB172 AC021                       AC022 AC101 AC102 AC121                       AC122 AC171 AC172 AC211                       AC212 AC301 AC302 AC331                       AC351 AC352 AC611 AC612                       AC841 AD041 AD042 AD151                       AD331 AD332 CC29 DD42

Claims (7)

[Claims] 1. A sol-shaped enamel remover containing water and an organic solvent compatible with water as a dispersion medium and containing a silica sol having an electric conductivity of 0 to 560 μS / cm, wherein the silica has an average particle diameter of 30 to 30. 200 nm, and the content of the silica is 1.5 to 9% by mass in the total amount of the enamel remover.
And the content of the organic solvent is 55 to 93% by mass based on the total amount of the enamel remover. 2. A silica sol having an electric conductivity of 0 to 560 μS / cm using water and an organic solvent compatible with water as a dispersion medium,
The sol-like enamel remover according to claim 1, which is obtained by mixing a silica sol having water as a dispersion medium and an electric conductivity of 0 to 560 μS / cm, and an organic solvent compatible with water. 3. The sol-like enamel remover according to claim 1, wherein the organic solvent compatible with water contains at least acetone. 4. An organic solvent other than acetone is methyl ethyl ketone, ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, methyl lactate, ethyl lactate, propylene carbonate, diacetone alcohol, ethyl alcohol, butyl cellosolve and diethylene glycol diethyl ether. The sol-like enamel remover according to claim 3, which is one or more selected from the group consisting of: 5. The sol-shaped enamel remover according to claim 1, further comprising a wetting agent. 6. The wetting agent is glycerin, propylene glycol, 1,3-butylene glycol, polyethylene glycol, sodium hyaluronate, 2-pyrrolidone-5.
The sol-like enamel remover according to claim 5, which is one or more selected from the group consisting of sodium carboxylate, sodium lactate, liquid paraffin, squalane, ester oil and silicone oil. 7. The content of the wetting agent is 1 to the organic solvent.
The sol-like enamel remover according to claim 5 or 6, which is 10% by mass.