JP3165937B2 - Enamel remover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has an excellent light-removing effect, suppresses whitening due to a decrease in gloss due to loss of moisture and oil in nails after removal, and has a treatment effect.
The present invention relates to a one-pack type transparent enamel remover having excellent usability such that there is no stickiness during or after use, and there is no problem such as repelling even when a nail enamel is applied immediately after use.

[0002]

2. Description of the Related Art Conventionally, enamel removers for removing nail enamel mainly composed of nitrocellulose mainly include ketones such as acetone and methyl ethyl ketone, acetates such as ethyl acetate and butyl acetate, ethyl cellosolve, propylene carbonate and the like. And a variety of organic solvents such as alcohols as a diluent. These various organic solvents have the light-removing action, which is the main function of the enamel remover, but also extract and remove excessively the oil and moisture of the nails, resulting in loss of luster of the nails, causing whitening and brittleness of the nails And so on.

For this reason, an enamel remover containing oil and water is currently used. However, if the amount of oil is increased in anticipation of a sufficient treatment effect, the light removing effect is reduced and the oil remains sticky. In addition to the drawbacks, the next time the nail enamel is to be applied, problems such as the inability to apply the nail enamel uniformly due to repelling due to the oil content have arisen. Further, when the amount of water is increased, the light-removing effect is reduced, and at the same time, oil components in the product are precipitated and separated.

Japanese Patent Publication No. 2-2851 (Japanese Patent Publication) discloses a technique for pursuing an enamel remover having both a high light-removing effect and a treatment property. This is a two-liquid layer in which the oil has settled in the stationary state, and the oil is dispersed in the form of finely divided oil droplets by shaking. Utilizing this separation state, for example, during normal light removal, it is used in a dispersed state by shaking, but the light removal effect is enhanced by using the upper layer part obtained by standing, or conversely, by using the sedimented oil component It is a technology that can enhance treatment properties.
However, in order to enhance the treatment property, this technique requires a gentle inversion of the container and the use of the oil that has settled, so that the method of use is somewhat difficult, and the separated state cannot be used immediately after shaking. There were drawbacks such as not being able to use both excellent light-removing effects and treatment properties with a degree of use.

Further, Japanese Patent Application Laid-Open No. Sho 60-42320 (JP-A-60-42320)
The aim is to achieve a high nail polish removal effect by adding a water-soluble amine salt of a hydrolyzed collagen fatty acid amide and a specific surfactant to an aqueous acetone base and to reduce the removal of nail moisture. Replenishment and emollient properties were not satisfactory.

[0006] As described above, the conventional enamel remover cannot simultaneously satisfy the light-removing effect, the nail treatment effect, and the usability such as non-stickiness. further,
In order to obtain an enamel remover with a high light-removing effect, it was necessary to mix a large amount of a solvent with a strong dissolving power and to suppress the amount of water and oil to be mixed, thus further promoting obstacles such as whitening of nails. Had become.

[0007]

In order to solve these problems, it is effective to mix a non-volatile component which has characteristics such as low surface tension and non-stickiness and which is a residual component on the nail. Conceivable. Silicone oil is suitable for this. Non-volatile silicone oils include dimethyl silicone, phenyl-modified silicone, and polyether-modified silicone. Non-volatile dimethyl silicone (6CS or more) and polyether-modified silicone have compatibility with acetone-water system. It was not preferable, and the amount in which the effect was exhibited could not be uniformly and transparently dissolved. On the other hand, cyclic silicone (tetramer to hexamer) and low-viscosity dimethyl silicone remained volatile on the nails and could not exhibit a treatment effect because they were volatile even though they had some degree of compatibility. .

Accordingly, while having an excellent light-removing effect, it suppresses whitening due to a decrease in gloss due to loss of moisture and oil in the nail after removal, has a treatment effect, and has no stickiness during or after use. There has been a demand for a one-liquid type transparent enamel remover which has excellent usability such that there is no problem such as repelling even when a nail enamel is applied immediately after use.

[0009]

In such a situation, the present inventors have made intensive studies and found that enamel remover containing acetone as a main solvent, water and a specific amount of a specific silicone oil has good emollient properties and high emollient properties. The present invention has a light removing effect, prevents whitening due to loss of gloss due to degreasing and dehydration of nails, and has been found to be superior in use feeling and usability to conventional enamel removers, thus completing the present invention.

That is, the present invention provides the following components (A) to
(C), (A) acetone 60 to 90% by weight (B) water 5 to 25% by weight (C) phenyl-modified silicone 0.5 to 10% by weight, and the phenyl-modified silicone of the component (C) is an enamel. An object of the present invention is to provide a one-pack type transparent enamel remover that accounts for 20 to 100% by weight based on the total amount of the nonvolatile components incorporated in the remover.

The acetone used as the component (A) in the enamel remover of the present invention is a solvent having a high light-removing effect on nail enamel, and has a characteristic that it has no unpleasant odor as compared with an acetate-based solvent. , 60 to 90% by weight (hereinafter simply indicated by%), preferably 65 to 85%
Be blended. If it is less than 60%, the light removing effect is not sufficient, and if it is more than 90%, a sufficient amount of water and treatment components cannot be blended, and the dehydrating effect of acetone is too strong, resulting in a large damage to nails.

The water of the component (B) is blended for the purpose of reducing the dehydration effect of acetone and rehydrating nails.
The content is 5 to 25%, preferably 8 to 20%. If it is less than 5%, the dehydration effect of acetone and the provision of water are not sufficient, and if it exceeds 25%, the light removing effect is reduced, and depending on the blending amount of an oil such as phenyl-modified silicone, white turbidity or separation may occur. And a transparent one-liquid layer type is not obtained.

The phenyl-modified silicone of the component (C) is
A linear polymer having a siloxane bond as a skeleton, for example, SH556, SF557, SF558, SF559 (Dow Corning Toray Silicone Co., Ltd.), KF-5
6 (Shin-Etsu Chemical Co., Ltd.). The component (C) is used alone or together with a fat, a surfactant, a moisturizing agent, and the like added to an ordinary enamel remover as an emollient component remaining on the nail after removing the nail enamel, resulting in loss of moisture and oil content of the nail. Prevents whitening due to a decrease in gloss and does not reduce the light-removing effect of acetone or the like, eliminates stickiness after use, and exerts an excellent effect that there is no cissing even after applying nail enamel again immediately after use. . This phenyl-modified silicone has excellent solubility in an acetone-water system as described in the present patent, so that an amount (0.5 to 10%) necessary for exhibiting a treatment effect and an anti-whitening effect can be added. .
That is, the phenyl-modified silicone is 0.5 to 10
%, Preferably 1 to 7%. If it is less than 0.5%, the compounding effect is not sufficiently exhibited, and if it is mixed more than 10%, there is no further effect of preventing whitening of the nail, and depending on the amount of water, it may cause cloudiness and separation, and the product may be mischievous. It is not preferable because it raises the cost.

The non-volatile component used in the present invention refers to a component having a low vapor pressure at room temperature, that is, a component having a low volatility, among the prescription components, and even after the nail enamel is removed using the product of the present invention. It is a component that hardly volatilizes and remains on the nail, and in addition to the phenyl-modified silicone, which is an essential component, oils, polyhydric alcohols, pigments, ultraviolet absorbers, and the like are included. Such non-volatile components have a large effect on the feeling of use after the volatile components such as acetone have volatilized after use of the enamel remover, and on the protective effect of the nails. Of the non-volatile components, the phenyl-modified silicone is added to the enamel remover in an amount of 20% based on the total amount of the non-volatile components.
% To 100% is preferable, and when it is less than 20%, the effects such as the whitening prevention effect and non-stickiness are not sufficiently exhibited.

Further, the enamel remover of the present invention generally contains a solvent, a diluent, various oily components, a surfactant, a humectant, an antioxidant, and an ultraviolet ray as long as the effect is not impaired. Absorbent, fragrance,
Beauty agents, pigments, water-soluble polymers, various thickeners and the like can be blended. Therefore, the appearance can be gelled or colored.

[0016]

The present invention will be further described below with reference to examples. still,
This patent is not limited by this.

Examples 1 to 6 and Comparative Examples 1 to 9 Enamel removers having the compositions shown in Table 1 were prepared and subjected to a sensory evaluation of uniform transparency, unpleasant odor, light-removing effect, stickiness, nail whitening prevention effect, and cissing. . The results are also shown in Table 1. However, those separated in the comparative example were evaluated in a state where they were shaken and dispersed.

(Evaluation Method) The following six items were subjected to three-step absolute evaluations by ten specialized panels, and the average score was further divided into three levels. (1) Absolute evaluation Evaluation items Absolute evaluation A. 2. Uniform transparency Uniform and transparent 2. Slightly cloudy, separation tendency Cloudiness, separation B. 2. Unpleasant odor No unpleasant odor. 2. Somewhat unpleasant odor. 1. There is an unpleasant odor. C. 2. Light removal effect Nail enamel is good. 2. Nail enamel is slightly poor. 1. Poor nail enamel drop. D. Sticky 3. Not sticky. 2. Somewhat sticky. 1. Quite sticky. E. FIG. 2. Prevents whitening of nails No whitening. 2. There is slight whitening. 1. There is whitening. F. Hajiki 3. When applying nail enamel immediately after removing light, it can be applied uniformly without cissing. 2. Immediately after removing the nail Enamel is slightly repelled and difficult to apply evenly. 1. Immediately after removing the nail, when applying nail enamel, cissing occurs and it cannot be applied uniformly. (2) Three-level evaluation 2.5 to 3.0: good: 1.5 to 2.4: normal: △ 1.0 to 1.4: bad: ×

[0019]

[Table 1]

(Preparation method) Each of the components described in Table 1 was stirred and mixed to obtain an enamel remover.

As is clear from the results shown in Table 1, the enamel removers of Examples 1 to 6 which are the products of the present invention satisfy the respective evaluation items, well prevent the whitening of the nail, and have the light removing effect. The coating was high, had no unpleasant odor, was not sticky, and had no repelling even when applied with nail enamel after removal of light, so that a uniform coating film was obtained.

On the other hand, Comparative Examples 1 to 3 contain oil as an emollient used as a non-volatile component and glycol as a humectant, which are usually used in an enamel remover. Usability such as non-stickiness could not be satisfied at the same time.

In Comparative Example 4, dimethyl silicone was blended in a manner similar to the phenyl-modified silicone.
Those with S or higher have poor compatibility with the system as in this patent, and cannot dissolve uniformly and transparently the amount in which the effect can be exerted, and furthermore, when enamel is applied, the coating film is repelled and cannot be applied uniformly. There was a disadvantage. Similarly, in Comparative Example 5 in which a polyether-modified silicone as a silicone-based surfactant was blended, no favorable result was obtained.

In Comparative Examples 6 to 9, the composition ratios were out of the range, but none of them satisfied all the effects.

[0025]

EFFECT OF THE INVENTION The enamel remover of the present invention has a non-sticky feeling, has a high light-removing effect, suppresses whitening of the nail due to loss of gloss accompanying degreasing and dehydration of the nail, and has a treatment effect. Even if a nail enamel is applied immediately after that, there is no problem such as cissing.

Claims (1)

(57) [Claims] 1. The following components (A) to (C), (A) acetone 60 to 90% by weight (B) water 5 to 25% by weight (C) phenyl-modified silicone 0.5 to 10% by weight And a one-pack type transparent enamel remover in which the phenyl-modified silicone of the component (C) is 20 to 100% by weight based on the total amount of the nonvolatile components incorporated in the enamel remover.