JPS6324969B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Object of the Invention The present invention relates to a remover for beautiful nail enamel (commonly known as manicure).

(Prior Art) Conventionally, as nail enamel removers, volatile low-boiling solvents such as ethyl acetate, butyl acetate,
Those containing acetone, methyl ethyl ketone, methyl isobutyl ketone, etc. as main components were used. However, nail enamel removers whose main ingredients are volatile low-boiling solvents have a strong solvent odor.
Not only is it highly irritating to the mucous membranes of the eyes, nose, throat, etc., and if it gets on the skin, it removes too much oil and water from the skin, but it also removes oil and water from the nails after enamel has been removed. It has the disadvantages of removing the nails, causing the nails to lose their luster, turn white, and make the nails brittle.

(Problems to be Solved by the Invention) The present invention has less solvent odor, less irritation to mucous membranes such as the eyes, nose, and throat, and removes excessive oil and water from the skin and nails after removing beautiful nail enamel. The purpose of the present invention is to provide a beautiful nail enamel remover that is free from danger and has an excellent enamel removal effect.

(b) Structure of the Invention (Means for Solving the Problems) As a result of repeated research in order to solve the above-mentioned problems, the present inventors have succeeded in solving the above-mentioned problems using a beautiful nail enamel remover having a specific composition. I was able to achieve my goal.

That is, the beautiful nail enamel remover of the present invention contains 2 to 6% by weight of higher fatty acids, 5 to 10% by weight of higher alcohols, 5 to 8% by weight of sucrose fatty acid esters, and 30 to 70% by weight of fatty acid esters having 10 or more carbon atoms. %, glycols 3 to 8% by weight, paraoxybenzoic acid ester 0.2 to 0.4% by weight, and the balance consists of water and a co-solvent added as necessary.

To remove the enamel applied to the nails using the beautiful nail enamel remover of the present invention, apply a small amount of the remover to the nail that has the enamel to be removed, spread it over the entire nail, leave it for a while, and then use a cloth or nail polisher. Enamel can be removed very easily by wiping it with gloss paper. In this case, there is almost no unpleasant odor, and there is no risk of irritation to the mucous membranes of the eyes, nose, throat, etc. In addition, there is no risk that the nails after enamel will lose their luster, turn white, or become brittle due to excessive removal of oil and moisture, and even if the nails are attached to the skin, they will not remove excessive oil and moisture from the skin. There is no risk of removing it and irritating the skin.

To explain each component of the beautiful nail enamel remover of the present invention, higher fatty acids and higher alcohols are:
Together, they enhance the spreadability of the remover (cream), improve the feeling of use of the remover, and maintain the emulsification balance of the remover as a whole, contributing to stabilization of the emulsification of the remover (cream). In this case, if only one of the higher fatty acid and higher alcohol is blended, the emulsification of the remover becomes unstable, separation occurs in a few days, and the spreadability and feeling of use become worse. The blending ratio of higher fatty acids and higher alcohols to maintain the best feel when using the remover, such as emulsion stability and spreadability, is 2 to 6% by weight of higher fatty acids and 5 to 10% by weight of higher alcohols based on the total amount of the remover. is within the range of

The higher fatty acids used in the present invention include saturated or unsaturated monovalent fatty acids having 14 to 22 carbon atoms, such as myristic acid, palmitic acid, stearic acid, oleic acid, and behenic acid. One type of higher fatty acid may be used,
Two or more types may be used in combination, or mixed higher fatty acids may be used.

Examples of the higher alcohol used in the present invention include saturated or unsaturated monohydric alcohols having 14 to 22 carbon atoms, such as myristyl alcohol, cetyl alcohol, stearyl alcohol, and behenyl alcohol. One type of higher alcohol may be used, two or more types may be used in combination, and a mixed higher alcohol may be used.

Sucrose fatty acid ester is used as an emulsifier, and is 5 to 8% by weight based on the total amount of the remover.
It is blended in the proportion of If the amount of nonionic surfactant is too small, it will be difficult to emulsify the removing agent into a stable cream, and if it is too large, the emulsification balance will be disrupted, causing separation.

Examples of the sucrose fatty acid ester in the present invention include various higher fatty acid esters of sucrose, and the ester may be an ester of a single fatty acid or a mixed ester of several types of fatty acids. Sucrose fatty acid esters esterified using natural fatty acids produced from natural oils or fatty acids separated from natural fatty acids are usually mixed esters of several types of fatty acids. Further, the sucrose fatty acid ester may be a monoester, a diester or higher ester, or a mixed ester of a monoester and a diester or higher ester.

Fatty acid esters having 10 or more carbon atoms play a major role in removing beautiful nail enamel by swelling or dissolving it. In this case, the number of carbon atoms of 10 or more refers to the total number of carbon atoms of the fatty acid and the alcohol that constitute the fatty acid ester. However, if the blending ratio is too high or too low, the emulsification balance will be disrupted, and if it is too low, the enamel removal effect will decrease.
It is blended within the range of ~70% by weight. Examples of the fatty acid ester include diisobutyl adipate, diisopropyl adipate, and dioctyl adipate.

Glycols act as humectants or moisturizers, and by adding them, excessive moisture is removed from the nails when removing enamel, causing the nails to lose their luster or become white. It can effectively prevent the skin from becoming brittle, and furthermore, when the remover comes into contact with the skin, it can prevent excessive removal of water from the skin and damage the skin. However, if the proportion of glycols is too high, the enamel removal effect will be reduced, so the amount of glycols is blended in the range of 3 to 8% by weight based on the total amount of the remover. Examples of glycols include polyethylene glycol (eg, average molecular weight 300 to 400), propylene glycol, and 1,3-butylene glycol.

Paraoxybenzoic acid ester acts as a preservative or preservative in the nail enamel remover, and is blended in an amount of 0.2 to 0.4% by weight based on the total amount of the nail enamel remover. Further, the beautiful nail enamel remover of the present invention may contain ethyl alcohol, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, etc. as a co-solvent, if necessary. The proportion of the co-solvent such as ethyl alcohol is in the range of 0 to 12% by weight based on the total amount of the remover. Ethyl alcohol is preferably used as industrial denatured alcohol in terms of cost.

In addition to the above-mentioned components, the beautiful nail enamel remover of the present invention contains water as the balance, so that the entire remover is emulsified into a creamy form. It is preferable to use purified water.

(Examples etc.) Below, Examples and Comparative Examples will be given and further explained in detail.

Example 1 Component A (oil phase) Behenyl alcohol 5.0g Stearic acid 2.0g Sucrose fatty acid ester (Daiichi Kogyo Seiyaku Co., Ltd. trade name: Shugar Wax S-10E) 3.0g Diisopropyl adipate 40.0g Butyl paraoxybenzoate 0.1g Paraoxybenzoic acid Methyl 0.1g Component B (aqueous phase) Purified water 30.8g Sucrose fatty acid ester (Daiichi Kogyo Seiyaku product name DK Ester S-110) 3.0g Polyoxyethylene glycol (average molecular weight
400) 6.0g Component C Ethyl alcohol 10.0g Total 100.0g First, the mixture of component A was heated to about 80°C to dissolve it and mixed uniformly.

Separately, the mixture of component B was heated to about 80° C. to dissolve it, and the homogeneous mixture of component A was added to the homogeneous mixture, stirred and emulsified, and immediately after that, component C was added. A beautiful nail enamel remover was prepared by stirring until cooled to 40°C and mixing uniformly.

The resulting beautiful nail enamel remover had little solvent odor, did not irritate the skin or mucous membranes, was excellent in enamel removal action, and had glossy nails with no whitening observed at all. Moreover, this remover did not cause separation even after being stored at room temperature for 3 months.

Example 2 Component A (oil phase) Behenyl alcohol 5.0g Stearic acid 5.0g Sucrose fatty acid ester (Daiichi Kogyo Seiyaku Co., Ltd. trade name: Shugar Wax S-10E) 4.0g Diisopropyl adipate 40.0g Butyl paraoxybenzoate 0.2g Paraoxybenzoic acid Methyl 0.2g Component B (aqueous phase) Sucrose fatty acid ester (Daiichi Kogyo Seiyaku Co., Ltd. trade name DK ester S-L18A) 3.0g Polyethylene glycol (molecular weight 400) 3.0g Purified water 29.6g Component C Ethyl alcohol 10.0g Total 100.0 g A beautiful nail enamel remover was prepared in the same manner as in Example 1 using the above Component A, Component B, and Component C. The obtained remover was as good as the remover prepared in the Examples.

The components of the commercially available sucrose fatty acid ester used in the above examples are as follows.

Sugar Wax S-10E: (Daiichi Kogyo Seiyaku Co., Ltd. product name) Sugar stearic acid (70% by weight), palmitic acid (28% by weight), and myristic acid (2% by weight)
Mixed ester with. Hydroxyl value 80-130 DK Ester S-110: (Daiichi Kogyo Seiyaku Co., Ltd. product name) Stearic acid (70% by weight), palmitic acid (28% by weight), and myristic acid (2% by weight) of cane sugar
Mixed ester with monoester/(diester + triester) molar ratio = 50/50 DK Ester S-L18A: (Daiichi Kogyo Seiyaku Co., Ltd. product name) Lauric acid (68% by weight) and myristic acid (15% by weight) of cane sugar A mixed ester of palmitic acid (6% by weight), capric acid (4% by weight), stearic acid (3% by weight), capric acid (2% by weight) and oleic acid (2% by weight). Monoester/(diester + triester) molar ratio =
70/30 Comparative Example 1 When a remover was prepared in the same manner as in Example 2 without using any behenyl alcohol in Example 2, the stability of the cream was poor.
Separation occurred after a few days. Furthermore, this remover had poor enamel removal effect.

Comparative Example 2 When a remover was prepared in the same manner as in Example 2 except that the stearic acid in Example 2 was not used at all, the feeling of use, that is, the feel and spreadability of the cream was poor, and the cream deteriorated after a few days. Separation occurred. Furthermore, the enamel removal effect was also poor.

Comparative Example 3 For both Component A and Component B in Example 2, an attempt was made to prepare a remover in the same manner as in Example 2 without using any sucrose fatty acid ester, but the removal agent did not become cream-like and the removal was difficult. It was unsuitable for use as an agent.

Comparative Example 4 An attempt was made to prepare a remover in the same manner as in Example 2 except that diisopropyl adipate in Example 2 was not used at all, but the product obtained did not exhibit any enamel removing effect.

Comparative Example 5 A remover was prepared in the same manner as in Example 2 except that the polyethylene glycol in Example 2 was not used at all, and when the resulting remover was used, the nails did not lose moisture after enamel removal. It has become dull and lackluster.

Example 3 Cetyl alcohol was used instead of behenyl alcohol in Example 1, and the rest was as in Example 1.
A removing agent was prepared in the same manner as in Example 1.
A removing agent almost similar to that obtained was obtained.

Example 4 A remover was prepared in the same manner as in Example 1 except that palmitic acid was used instead of stearic acid in Example 1, and a remover almost the same as that obtained in Example 1 was obtained. .

Example 5 A removing agent was prepared in the same manner as in Example 1 except that dioctyl adipate was used in place of diisopropyl adipate in Example 1, and a removing agent almost the same as that obtained in Example 1 was obtained. It was done.

Example 6 A removing agent was prepared in the same manner as in Example 1 except that propylene glycol was used instead of polyethylene glycol in Example 1.
A removing agent substantially similar to that obtained in Example 1 was obtained.

Claims (1)

[Claims] 1 Higher fatty acids 2-6% by weight, higher alcohols 5
~10% by weight, 5-8% by weight of sucrose fatty acid ester, 30-70% by weight of fatty acid ester having 10 or more carbon atoms, 3-8% by weight of glycols, 0.2-0.4% by weight of paraoxybenzoic acid ester, the balance being water A beautiful nail enamel remover consisting of a co-solvent and a co-solvent added as necessary.