JP2013241362A - Remover for nail coating agent and removing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remover for a nail coating agent and a removing method using the same having both high removing properties for a nail coating agent and low damaging properties to nails and skin.SOLUTION: A remover for a nail coating agent includes: an alkylene carbonate (A) and a compound (B) represented by general formula (b1) [wherein Ris CHOH or CHOCH; and Ris H, CHOCHor OCH]. A mass ratio (A)/(B) of the alkylene carbonate (A) to the compound (B) ranges from 70/30 to 95/5, and the total amount of the alkylene carbonate (A) and the compound (B) is 40-70 mass%.

Description

  The present invention relates to a remover for nail coating and a removal method using the same.

In order to protect and decorate the nail, the surface of the nail is coated with a nail coating agent.
Conventionally, nail coatings (manicures) of the type in which a coating solution in which nitrocellulose is dissolved in an organic solvent are applied to the surface of the nail and dried to form a film (enamel) are the mainstream.
For removing the formed enamel, an enamel remover mainly containing a solvent that dissolves the enamel is used. As the main agent, a ketone solvent or an ester solvent such as acetone is mainly used.
However, enamel removers have problems such as the main agent, such as acetone, damaging the nails and surrounding skin, and having high flammability.
In order to solve such a problem, for example, Patent Document 1 discloses a nail enamel remover that is less irritating and does not hurt the nail or finger, and that mainly contains γ-butyrolactone or benzyl alcohol. Patent Document 2 discloses a non-flammable transparent gel that contains propylene carbonate, ethanol, hydroxypropyl cellulose, and water as essential components, as a nail lacquer remover that is not flammable and does not damage nails. ing. Patent Document 3 discloses an emulsified enamel remover having excellent enamel removal power and mild feeling after use, improving the degree of damage to nails, and having an appropriate viscosity. Water, solvent, surfactant, oil, lower alkylene carbonate and What contains a cellulose derivative is disclosed.

In recent years, as a nail coating agent, a nail coating agent (gel nail) of a type in which a gel containing an ultraviolet curable resin such as a urethane-based resin is coated on the surface of the nail and cured by irradiation with ultraviolet rays has appeared.
The gel nail cured film is removed by a remover containing acetone as a main ingredient (hereinafter referred to as an acetone-based remover). Usually, the fingertip portion including the nail is immersed in a heated acetone-based remover in a container. The cured film is swollen and peeled off by scratching with a tool such as a spatula.
However, the gel nail cured film has stronger film strength than nitrocellulose enamel, so if you want to remove it with a conventional acetone remover, immerse the fingertip part including the nail in the acetone remover for 20 minutes or more. I must. In addition, by immersing in an acetone-based remover for a long time, the skin of the nail or fingertip is significantly damaged, for example, the surface of the nail becomes rough or the skin surface becomes white.
For such a problem, for example, it is conceivable to use a remover that does not damage nails and skin as disclosed in Patent Documents 1 to 3.
However, these removers cannot be said to have both the removal performance required for the remover with respect to the gel nail and the low damage property. For example, when acetone is not included to some extent, the cured film cannot be removed, or even if it can be removed, it takes more time. When acetone is included to some extent, the cured film can be removed, but because the immersion time is long, the nails and skin are damaged.
Therefore, it has both the removability that can remove nail coating film, especially gel nail cured film in a time equivalent to or shorter than conventional acetone-based remover, and low damage property that does not damage nail and skin. There is a need for a nail coating remover.

JP-A-62-207206 Japanese Patent Laid-Open No. 01-242515 JP 09-268114 A

  The present invention has been made in view of the above circumstances, and a nail coating remover that has both high removability to the nail coating film and low damage to the nail and skin, and a nail coating removing method using the same The purpose is to provide.

As a result of intensive studies, the present inventors have used specific two components in combination, and by making their ratio and total amount within a specific range, in a short time without damaging the nails and skin, It has been found that a conventional nail polish (main component nitrocellulose) film and a gel nail cured film that is more difficult to remove can be removed.
This invention is made | formed based on the said knowledge, and has the following aspects.

1st aspect of this invention contains alkylene carbonate (A) and the compound (B) represented by the following general formula (b1),
The mass ratio of the alkylene carbonate (A) to the compound (B) is in the range of (A) / (B) = 70/30 to 95/5,
The nail coating remover, wherein the total amount of the alkylene carbonate (A) and the compound (B) is 40 to 70% by mass.

［式（ｂ１）中、Ｒ^１はＣＨ_２ＯＨまたはＣＨ_２ＯＣＨ_３を示し、Ｒ^２はＨ、ＣＨ_２ＯＣＨ_３またはＯＣＨ_３を示す。］

[In Formula (b1), R ¹ represents CH ₂ OH or CH ₂ OCH ₃ , and R ² represents H, CH ₂ OCH _3, or OCH ₃ . ]

  The second aspect of the present invention is a removal method for removing the nail coating film provided on the nail using the nail coating remover according to claim 1.

  ADVANTAGE OF THE INVENTION According to this invention, the remover for nail | claw coating agents which has the high removability with respect to the film | membrane of a nail | claw coating agent, and the low damage property with respect to a nail | claw or skin, and the removal method using this can be provided.

It is an exploded view which shows schematic structure of one Embodiment of the container which accommodates the remover for nail | claw coating agents of this invention.

The remover for nail coating of the present invention (hereinafter sometimes simply referred to as remover) comprises the following components (A) and (B): (A) / (B) = 70/30 to 95/5 In such a range, the total amount thereof is 40 to 70% by mass. As a result, the nail coating film has excellent removability equivalent to that of conventional acetone-based removers, and it can dissolve and remove normal nail polish (main component nitrocellulose) film, as well as gel nail cured film. Can be removed in a time as short as when a conventional acetone-based remover is used. Moreover, it is hard to damage a nail | claw and skin compared with the conventional acetone type remover. Therefore, even if it contacts for a certain period of time for the removal of the cured film of a gel nail, damage hardly arises. Furthermore, it is less flammable than conventional acetone-based removers.
On the other hand, when (A) component is not included, or the ratio of (B) component in (A) / (B) exceeds 30, or the total of (A) component and (B) component in the remover When the amount exceeds 70% by mass, the nails and skin are easily damaged.
In addition, when the component (B) is not included or the ratio of the component (B) in (A) / (B) is less than 5, or the component (A) and component (B) in the remover When the total is less than 40% by mass, the removability is lowered.
Hereinafter, the remover of the present invention will be described in more detail.

<(A) component>
(A) A component is alkylene carbonate.
The component (A) is an aprotic polar solvent, and is used as a main component of the remover (component that dissolves or swells the nail coating film). The component (A) alone has insufficient removability with respect to the cured film of gel nail, but when used in combination with the component (B) at a specific ratio, it exhibits removability equivalent to that of acetone. Moreover, (A) component is also a solvent with little burden on a nail | claw or skin.
(A) As a component, the compound represented by the following general formula (a1) is mentioned, for example.

In formula (a1), R ^{a to} R ^d each independently represent H or an alkyl group.
The alkyl group in R ^a to R ^d, preferably an alkyl group having 1 to 2 carbon atoms.

The alkylene group in the component (A), for example, —C (R ^a ) (R ^b ) —C (R ^c ) (R ^d ) — in the general formula (a1) is a point such as removability to the film of the nail coating agent. Therefore, an alkylene group having 2 to 4 carbon atoms is preferable, and an alkylene group having 2 to 3 carbon atoms is more preferable.
Specific examples of the component (A) include ethylene carbonate, propylene carbonate, butylene carbonate and the like.
(A) A component can be used individually or in mixture of 2 or more types.
Among these, (A) component is preferably propylene carbonate from the viewpoints of removability to the film of the nail coating and securing liquid stability when mixed with component (B).

<(B) component>
The component (B) is a compound represented by the following general formula (b1).
(B) A component is used as a main ingredient of a remover like the (A) component. Component (B) is excellent in the action of dissolving or swelling the nail coating film. Moreover, it has the effect | action which improves the permeability of the remover to this membrane | film | coat. The component (B) acts synergistically with the component (A) to improve the removability of the nail coating film, and for example, the time required for peeling off the gel nail cured film can be shortened.

In formula (b1), R ¹ represents CH ₂ OH or CH ₂ OCH ₃ , and R ² represents H, CH ₂ OCH ₃ or OCH ₃ .
Specific examples of the component (B) include benzyl alcohol, anisyl alcohol, p-xylylene glycol dimethyl ether and the like.
(B) A component can be used individually or in mixture of 2 or more types.
As the component (B), benzyl alcohol or a mixture of benzyl alcohol and p-xylylene glycol dimethyl ether is preferable and benzyl alcohol is particularly preferable from the viewpoint of removability.

In the remover of the present invention, the mass ratio of the component (A) to the component (B) is in the range of (A) / (B) = 70/30 to 95/5, and 85/15 to 92/8. It is preferable to be within the range. If the component (B) is not included or the ratio of the component (B) in (A) / (B) is less than 5, the removability decreases. If the ratio of the component (B) in (A) / (B) exceeds 30, even if the component (A) is not included, the nails and skin are easily damaged.
Moreover, the remover of this invention WHEREIN: The total amount of (A) component and (B) component is 40-70 mass% with respect to the total mass of a remover, and it is preferable that it is 45-65 mass%. When the total amount exceeds 70% by mass, the nails and the skin are easily damaged. When the total amount is less than 40% by mass, the removability is lowered.

The content of each of the (A) component and the (B) component in the remover is such that the value of (A) / (B) and the total amount of the (A) component and the (B) component are within the above ranges, respectively. The content of the component (A) is more preferably 40 to 60% by mass, the content of the component (B) is preferably 3 to 15% by mass, and more preferably 3 to 5% by mass. preferable.

  The remover of the present invention contains components (arbitrary components) other than the component (A) and the component (B) within a range that does not impair the effects of the present invention, if necessary, for example, depending on the method of use. May be. As the optional component, various components that have been used so far in nail coating remover applications can be used.

Examples of optional components that are preferably blended in the remover of the present invention include a thickener, water, ethanol, and the like.
For example, a remover can be made into a gel form by mix | blending a thickener. When the remover is in the form of a gel, it is easy to apply when the remover is applied on the nail coating film and removed. In addition, effects such as improved adhesion to the film, suppression of volatilization of active ingredients, and suppression of remover adhesion to the skin around the nail are also obtained.
By blending water, moisture transpiration from the nail and skin is suppressed, damage to the nail and skin is further reduced, and a mild feeling of use is obtained. Moreover, flammability can also be reduced by mix | blending water.
Ethanol is blended for the purpose of improving the liquid stability of the remover of the present invention and improving the permeability of the active ingredient. By blending ethanol, the (A) component, the (B) component, and the fragrances and dyes blended arbitrarily can be stably blended. Moreover, ethanol functions as a solubilizer of water and a solvent, and water can be solubilized in a solvent ((A) component, (B) component, etc.) by blending ethanol. Therefore, when water is blended, it is preferable to blend ethanol. In addition, the removal of foreign substances and oils and fats attached to nails and fingers with ethanol can be expected to improve the permeability of the active ingredient of the remover.
In the present invention, it is particularly preferable to contain water, a thickener and ethanol in addition to the component (A) and the component (B). By containing water, a thickener and ethanol, the damage to nails and skin is further reduced, and the gel is stable and easy to use.

<Thickener>
Examples of the thickener include hydroxypropyl cellulose, hydroxyethyl cellulose, carboxyvinyl polymer, gum arabic, carrageenan, caraya gum, gum tragacanth, carob gum, quince seed, casein, dextrin, gelatin, sodium pectate, sodium alginate, methyl cellulose, ethyl cellulose Carboxymethyl cellulose (CMC), sodium polyacrylate, guar gum, tamarint gum, cellulose dialkyldimethylammonium sulfate, xanthan gum and the like.
0.5-5 mass% is preferable with respect to the total mass of a remover as a thickener solid content, and, as for the compounding quantity of a thickener, 2-4 mass% is more preferable. When it is 0.5% by mass or more, a sufficient thickening effect is obtained, and when it is 5% by mass or less, there is no stickiness after use.

<Water>
Examples of water include distilled water, ion exchange water, and tap water.
1-20 mass% is preferable with respect to the total mass of a remover, and, as for the compounding quantity of water, 1-10 mass% is more preferable. Mildness can be sufficiently imparted when the content is 1% by mass or more. If it exceeds 20% by mass, the film removability may be impaired.

<Ethanol>
5-50 mass% is preferable with respect to the total mass of a remover, and, as for the compounding quantity of ethanol, 5-35 mass% is more preferable. If it is less than 5% by mass, the blending effect of ethanol, for example, the effect of solubilizing water may be insufficient. If it exceeds 50% by mass, the film removability may be impaired.

<Solvent>
In the remover of the present invention, a solvent (C) other than the component (A), the component (B) and ethanol can be further blended within a range not impairing the effects of the present invention. For example, when a thickener is blended, a solvent (C) may be blended in order to increase the solubility.
Examples of the solvent (C) include acetone, n-propyl alcohol, i-propyl alcohol, ethyl acetate, butyl acetate, amyl acetate, ethyl lactate, butyl lactate, toluene, methyl ethyl ketone, isobutyl acetate, propyl acetate, isopropyl acetate, propyl. Polyhydric alcohols such as alcohol, glycerin, propylene glycol, 1,3-butylene glycol, polyethylene glycol, sorbitol, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, ethylene glycol monomethyl ether, ethylene Glycol dimethyl ether, diethylene glycol dimethyl ether, ethylene glycol methyl ether acetate Over DOO, glycol ethyl ether acetate, .gamma.-butyrolactone, N- methylpyrrolidone, ethylene carbonate, polyoxypropylene ether and the like.
However, the solvent (C) is excellent in removability, but easily damages nails and skin. Therefore, the content of the solvent (C) in the remover is preferably 20% by mass or less, and more preferably 15% by mass or less with respect to the total mass of the remover. Especially, it is preferable that a remover does not contain a solvent (C) substantially. “Substantially free” means not blended during manufacture.

<Humectant>
A moisturizing agent (oil) can be further blended with the remover of the present invention as long as the effects of the present invention are not impaired. By blending a moisturizer, damage to nails and skin can be further reduced.
Examples of the humectant include hydrocarbon compounds such as liquid paraffin, olive oil, castor oil, almond oil, squalane, jojoba oil, silicone oil, fatty acid ester, and the like.

<Others>
The remover of the present invention can further contain a fragrance, a dye, a surfactant and the like.

The remover of the present invention preferably has a pH of 6 to 8 at 20 ° C. from the viewpoint of mildness to nails and skin.
The viscosity of the remover of the present invention is not particularly limited, but when the remover is applied directly on the nail coating film, the viscosity at 20 ° C. is 1000 to 100,000 mPa · s from the viewpoint of usability. Preferably, 3000 to 30000 mPa · s is more preferable. When the viscosity is 1000 mPa · s or more, liquid dripping is difficult when the remover is placed on the nail. If it exceeds 100,000 mPa · s, the spread to the nails may be deteriorated and the usability may be deteriorated. The viscosity was measured using a B-type viscometer. It is a value measured under the conditions of 4 rotors, 30 rpm and 60 sec.
The remover of the present invention preferably has a flash point in a non-hazardous region from the viewpoint of handling, safety, and the like. From the dangerous goods judgment flow of alcohol products, if the flash point is 22.2 ° C or higher, it can be said that it is in the non-dangerous goods area.

  The remover of the present invention can be prepared by mixing the component (A) and the component (B). At this time, you may mix | blend an arbitrary component as needed.

The remover of the present invention is used for removing the nail coating film.
The nail coating is not particularly limited as long as it can be removed by a conventional remover, for example, a remover mainly composed of acetone.
For example, a nail coating agent (manicure) that forms a film (enamel) by applying a coating solution in which nitrocellulose is dissolved in an organic solvent to the surface of the nail and drying it, and UV curable resin such as urethane resin Examples include a nail coating agent (gel nail) of a type in which a gel is coated on the surface of the nail and cured by irradiating with ultraviolet rays.
The remover of the present invention is particularly useful for gel nails.
Gel nails are also called soft gels and soak-off gels.
Gel nails are not particularly limited and include known ones. As gel nails, those containing a urethane monomer or oligomer having a double bond are generally used. By having a double bond site, UV curing is possible, and by including a urethane bond site, the cured film can be removed with a solvent. It is said that the more the urethane bond sites in the composition, the easier it is to remove the cured film with acetone. As the urethane monomer or oligomer having a double bond, a urethane acrylate monomer or oligomer is mainly used. Moreover, another monomer or oligomer is mix | blended as needed. For example, an epoxy acrylate monomer or oligomer is blended, or a methacrylate oligomer or monomer is blended for improving the film strength.

The method of using the remover of the present invention, that is, the removal method of removing the film of the nail coating provided on the nail using the remover of the present invention is not particularly limited, is the remover contacted with the film and dissolved? Alternatively, it can be removed by swelling and peeling.
For example, when the nail coating material is nail polish, the nail polish film provided on the nail can be removed by dissolving with the remover of the present invention.
When the nail coating is a gel nail, the gel nail cured film provided on the nail can be removed by swelling with the remover of the present invention, and applying force to the cured film to peel it off the nail.

More specifically, for example, the following methods 1 to 3 may be mentioned as a method of removing the nail coating film.
1. A method of wiping the film with a cotton or cloth soaked with a remover, or leaving the cotton or cloth on the film to swell the film, and applying force to release the film.
2. A method in which a remover is applied directly on the nail coating film, and then the film is wiped off or left standing to swell the film and apply force to peel it off. Cover the entire nail with aluminum foil if the remover may evaporate when left standing.
3. A method in which a remover is housed in a container and a fingertip including a nail is dipped in the container, and then the film is wiped off with cotton or cloth, or the swollen film is applied and peeled off.

Among these, method 2 is particularly preferable because the film is removed without damaging the skin and the amount of the remover used is reduced.
In Method 2, particularly when the film is allowed to swell to swell, the remover to be used is preferably in the form of a gel from the viewpoint of easily holding the remover on the film. The viscosity of the gel is preferably such that it does not sag when placed on the nail. Specifically, as described above, the viscosity at 20 ° C. is preferably 1000 to 100000 mPa · s, and more preferably 3000 to 30000 mPa · s.
In Method 2, the amount of remover applied on one film (the amount used for one nail) is not particularly limited, but is usually about 0.05 to 0.3 mg.
In Method 2, the method for applying the remover is not particularly limited. For example, a remover is housed in a push-type container in which the amount used for one nail is discharged with a single push, and the amount used for one nail is discharged onto the film and spread over the entire surface of the film. Examples thereof include a method of spraying with a sprayer and a method of applying with a brush.
In particular, a method using a push-type container in which the amount used for one nail is discharged by one push is preferable because the amount applied at a time can be saved and the nail can be easily applied to the nail. In particular, the container is preferably a pen type because it is easy to hold and apply.

FIG. 1 shows an embodiment of the push type container. FIG. 1 is an exploded view showing a schematic configuration of the container 1 of the present embodiment. The container 1 is a push-type pen-type container, and includes an inner cylinder portion 2 that accommodates a remover, a pump 3 installed at a front end opening of the inner cylinder portion 2, a nozzle 4a at the front end, and a pump 3 at the rear end. And the outer cylinder part 4 provided with the opening part 4b which inserts the inner cylinder part 2, and the cap 5 which covers the nozzle 4a and can be attached or detached to the outer cylinder part 4 are provided. When the container 1 is assembled by inserting the pump 3 and the inner cylinder part 2 from the opening 4b of the outer cylinder part 4 and assembling the container 1, a part of the rear end side of the inner cylinder part 2 is It is comprised so that it may protrude from the opening part 4b. The nozzle 4a has a thick cylindrical shape, and the opening end surface on the tip side is an inclined surface inclined with respect to the axial direction of the nozzle.
The remover is accommodated in the inner cylinder portion 2, the pump 3 is installed at the tip, and this is inserted from the opening 4 b of the outer cylinder portion 4, whereby the remover containing the container 1 can be obtained. When the rear end surface of the inner cylinder portion 2 of the remover containing the container 1 is pushed, a fixed amount of the remover is discharged from the nozzle 4a. The discharged remover can be spread directly on the entire surface of the nail coating film using the opening end face of the nozzle 4a.

Hereinafter, the present invention will be specifically described by way of examples, but the present invention is not limited thereto.
<Examples 1-7, Comparative Examples 1-8>
Each component was mixed by the following procedure to prepare a remover so that the compositions shown in Tables 1 and 2 were obtained.
First, hydroxypropyl cellulose and polyoxypropylene butyl ether were mixed in a beaker. There, ethanol, a fragrance | flavor, and the pigment | dye were mixed there as needed, and also water was added and it stirred for about 10 minutes. After becoming uniform enough, jojoba oil was blended as needed and further stirred. After becoming uniform enough, propylene carbonate / benzyl alcohol was blended and stirred for about 10 minutes to obtain the desired remover.
In Tables 1 and 2, the unit of the blending amount is mass%. Only the remover of Example 6 was liquid, and the other removers were gel-like. The viscosities (20 ° C./B type viscometer / No. 4 rotor / 30 rpm / 60 sec) of the removers of Examples 1 to 5 and 7 which are gel-like were all about 15000 mPa · s. Further, the flash points (measured by the tag sealing method) of the removers of Examples 1 to 7 were all about 24.5 ° C., and were in the non-hazardous area.
The following evaluation was performed on the obtained remover. The results are shown in Tables 1-2.

[Evaluation of removability]
Apply a thin layer of 1 g of a commercially available UV-curable nail coating (trade name: Neylit! Soak Off Gel Nail Polish, distributor: Luteia Co., Ltd.) to the entire surface of the quartz plate (2.5 cm x 3.0 cm) The nail coating was cured by irradiating ultraviolet rays with an irradiator (product name: 36 W UV LAMP, manufactured by Aju International) for 3 minutes.
The obtained quartz plate with a cured film was wrapped in cotton soaked with a remover and covered with aluminum foil. It was left as it was for 20 minutes.
After standing, the degree of peeling of the cured film from the quartz plate was evaluated according to the following criteria. ○ The above was determined to be acceptable.
(Evaluation criteria for removability)
X: The cured film did not peel from the plate even when scratched with a spatula.
○: The cured film peeled off from the plate when scratched with a spatula.
A: The cured film was swollen and peeled off from the plate.

[Evaluation of damage to nails and skin]
30 mL of remover was placed in a circular petri dish (diameter 30 mm), and an index finger previously coated with a nail was immersed for 15 minutes. The temperature during immersion was 25 ° C. The nail | claw after immersion and its peripheral part were visually observed, and the following references | standards evaluated. ○ The above was determined to be acceptable. In addition, the nail | claw coating | cover was performed by irradiating an ultraviolet-ray and making it harden | cure using the ultraviolet curing type nail | claw coating agent similarly to the evaluation of the said removal property.
(Damability evaluation criteria)
X: The nail | claw and the peripheral part became quite white.
○: The nail and the peripheral part were slightly white, but after about 3 to 4 minutes, it was almost the same as before use.
A: Almost the same as before use.

As shown in the above results, the removers of Examples 1 to 7 both passed removability and damage.
On the other hand, the comparative example 1 which does not include the component (A), the comparative example 4 in which the total amount of the component (A) and the component (B) is 77% by mass, and the comparison in which the mass ratio of (A) / (B) is 68/32. Example 5, (A) / (B) mass ratio is 66/33, the total amount of (A) component and (B) component is 15% by mass, comparative example 7 in which acetone is further blended as the main agent, acetone as the main agent In Comparative Example 8 using only No., the damage property was rejected.
Moreover, the comparative example 2 which does not contain (B) component, the comparative example 3 whose total amount of (A) component and (B) component is 30 mass%, and the comparison whose mass ratio of (A) / (B) is 98/2 In each case, the removability was unacceptable.

  DESCRIPTION OF SYMBOLS 1 ... Container, 2 ... Inner cylinder part, 3 ... Pump, 4 ... Outer cylinder part, 5 ... Cap

Claims (2)

An alkylene carbonate (A) and a compound (B) represented by the following general formula (b1),
The mass ratio of the alkylene carbonate (A) to the compound (B) is in the range of (A) / (B) = 70/30 to 95/5,
A remover for a nail coating agent, wherein the total amount of the alkylene carbonate (A) and the compound (B) is 40 to 70% by mass.

[In Formula (b1), R ¹ represents CH ₂ OH or CH ₂ OCH ₃ , and R ² represents H, CH ₂ OCH _3, or OCH ₃ . ]   The removal method which removes the film | membrane of the nail coating agent provided in the nail | claw using the remover for nail coating agents of Claim 1.

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