JPH06100417A - Manicure - Google Patents

Abstract

PURPOSE:To provide a manicure giving an excellent fragrance and safe to the human body. CONSTITUTION:A manicure containing 5 to 30wt.% limonene in place of toluene. Limonene had a citrus-like fragrance and the odors of other solvents can be masked by mixing it in the manicure. The manicure, therefore, gives a refreshing fragrance when being used. Further, limonene exhibits an excellent compatibility with a common solvent contained in a general manicure, e.g. ethyl acetate, butyl acetate, ethanol, 1-propanol or 1-butanol and makes the manicure run smoothly on paper in the same manner as toluene. Limonene is also effective for the improvement of storage stability.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to an improved nail enamel. More specifically, it relates to a nail varnish which is safe and has a good fragrance for the human body.

[0002]

2. Description of the Related Art In general, a nail enamel comprises a nitrocellulose, a resin and a plasticizer dissolved in an organic solvent, in which a necessary amount of an organic clay mineral and pigments are dispersed. Consists of Among them, the organic solvent usually contains 5 to 30% by weight of toluene based on the total amount of nail varnish. Its main purpose is to contribute to the stabilization of the viscosity of the entire nail polish and the swelling of organic clay minerals, to give the nail polish a good writing taste and to improve the storage stability.

On the other hand, toluene is highly inhalation toxic compared with other organic solvents which are mixed in nail enamel.
Further, it has been pointed out that even when it comes into contact with a nail, the nail is liable to be whitened or cracked easily (Japanese Patent Publication No. 61-1044). However, for the reasons described above, it has been difficult to manufacture a nail enamel without blending toluene.

Further, not only toluene but also ethyl acetate, butyl acetate, 1-propanol, 1-butanol and the like which are blended in nail polish have a problem that they have a peculiar solvent odor and cause discomfort during use. .

In view of such circumstances, the inventors of the present invention have conducted extensive studies to produce a nail varnish which is safe for the human body, has a good fragrance, and has good product characteristics. It has been found that a nail varnish blended instead solves the above-mentioned problems.

[0006]

SUMMARY OF THE INVENTION The present invention is a nail varnish containing limonene.

The limonene according to the present invention is purified from terpenes contained in the epidermis of citrus fruits, and is known to be far safer for humans than toluene.

Further, limonene has a citrus fragrance, and when blended into a nail enamel, it masks other solvent odors during use and produces a refreshing scent.

Furthermore, it shows good compatibility with solvents usually used in nail enamel, such as ethyl acetate, butyl acetate, ethanol, 1-propanol, 1-butanol, etc.
Similar to toluene, it gives the nail polish a good writing feel and enhances storage stability.

The amount of limonene used in the present invention is 5 to 30% by weight based on the total amount of nail enamel. If it is less than 5% by weight, the writing quality and storage stability of the nail enamel are poor, and at the same time, a refreshing scent cannot be produced. If it is blended in an amount of more than 30% by weight, the solubility of nitrocellulose, which is the main film-forming agent, is adversely affected, and a phenomenon of white precipitation occurs when the nail enamel is applied, which is not preferable.

Examples of the organic solvent other than limonene used in the present invention include esters such as ethyl acetate and butyl acetate, and alcohols such as ethanol, 1-propanol and 1-butanol. Of these, nitrocellulose is used. Esters are essential for dissolution. Generally, the total amount of organic solvent including limonene is 5
It is 0 to 90% by weight.

The nail enamel of the present invention includes nitrocellulose, resins, plasticizers, organic clay minerals, which are commonly used,
Pigments and the like can be appropriately blended within a range that achieves the object of the present invention.

[0013]

EXAMPLES The present invention will be described in detail below based on examples and comparative examples, but the present invention is not limited thereto. In addition,% shown in Examples and Comparative Examples is% by weight.

Test methods for gloss, hardness, flexibility, water resistance, durability of make-up effect, degree of nail damage, ease of application, odor during use, and storage stability of the nail enamel described in the examples are described. Shown below.

(1) A sample was uniformly applied to a glossy glass plate with a thickness of 80 micrometers, dried at 30 ° C. for 24 hours, and then the reflectance was measured at an incident angle of 30 ° using a gloss meter. A reflectance of 90% or more is ◯, a reflectance of 70% or more and less than 90% is Δ, 70
Those less than% were defined as x.

(2) Hardness A sample was uniformly applied to a glass plate with a thickness of 80 micrometers, dried at 30 ° C. for 24 hours, and then measured with a pencil hardness meter according to JIS5400 “General Test Method for Paint”. ○ with a pencil hardness of 2H or more that can cause scratches on the coating under a load of 300 g and an angle of 45 °, and Δ with H to HB.
Those of B or less were marked with x.

(3) Flexibility A sample was evenly applied to a nylon plate with a thickness of 80 micrometers, and after the application, the sample was bent 180 degrees once a day, and the period (number of days) until cracking was measured. 5 days or more ○, 2
~ 4 days were marked with Δ, and less than 1 day was marked with x.

(4) Water-resistant glass plate was uniformly coated with a sample having a thickness of 80 micrometers and dried at 30 ° C. for 24 hours.
It was immersed in water at 0 ° C. for 1 hour and visually observed for whitening, swelling and peeling. A sample having no change was rated as ◯, a sample having a slight whitening was rated as Δ, and a sample having significant whitening and a sample swelling and peeling from the glass plate were rated as x.

(5) Persistence of make-up effect: The sample was applied to the nails of 10 female subjects, and the gloss, peeling and scratches on the surface of the film were observed every day. Determine how many days it lasts in. ○ 3 if the number of subjects whose effect lasted 3 days or more was 8 or more
~ 7 people were marked with Δ, and 2 people or less were marked with x.

(6) Degree of Nail Damage Ten female subjects were allowed to use the sample for 3 months, and changes in nail whitening, cracking, etc. were observed. The case where all members showed no change in the nail was marked with ◯, and the case where there was at least one subject who showed change in the nail was marked with x.

(7) Ease of application 10 female subjects were made to apply the sample and the degree of ease of application was judged. The number of test subjects who answered that it was easy to apply was 8 or more, and the number of 3 to 7 was Δ, and the number of 2 or less was x.

(8) Smell during use Ten female subjects were made to apply the sample to judge whether or not the smell was preferable. 8 subjects answered favorable
Those with more than 1 person were marked with ◯, those with 3 to 7 persons were marked with Δ, and those with 2 persons or less were marked with x.

(9) Storage stability Samples were placed in a glass container for nail enamel and allowed to stand at room temperature for 2 weeks, and those with no change in state were marked with ◯, and those in which pigment separation / sedimentation occurred were marked with x. .

Example 1 Component A Limonene 26.0% Butyl acetate 25.0 Ethyl acetate 10.0 Ethanol 5.0 Component B Nitrocellulose 15.0 Acrylic resin 10.0 Rosin 5.0 Dibutyl phthalate 1.0 Ingredient C Dimethylbenzyl dodecyl ammonium montmorillonite 1.0 Ingredient D Bengala 0.1 Mica titanium pearlescent agent 1.9 Red No. 201 Suitable amount

(Manufacturing method) After the component A was uniformly mixed, the component C was added and mixed uniformly. Then, Component B was added and dissolved, and Component D was added and uniformly mixed to obtain a product.

Comparative Example 1 A nail enamel was produced in the same manner as in Example 1 except that toluene was used instead of limonene in Example 1.

Table 1 shows the results of each test.

[0028]

[Table 1]

As shown in the results of Table 1, Example 1 is Comparative Example 1
It was superior in all respects, especially in terms of "degree of nail damage" and "smell during use". From the above results, it is clear that limonene has a good fragrance without losing the original function of the nail enamel.

[0030]

As described above, the nail enamel of the present invention is
It is obvious that it provides an excellent fragrance and provides a safe nail polish for the human body.

Claims (1)

[Claims] 1. A nail enamel comprising limonene in an amount of 5 to 30% by weight.