JPS6263507A - Manicure composition - Google Patents

Abstract

PURPOSE:A manicure composition capable of releasing directly a film formed on a finger nail, obtained by blending natural rubber latex as a main component with an emulsion resin obtained by subjecting an acrylic ester to emulsion polymerization, dye and pigment. CONSTITUTION:A manicure composition containing (A) 40-75wt% natural rubber latex, (B) 10-40wt% emulsion resin obtained by subjecting an acrylic ester to emulsion polymerization and (C) 0.1-7wt% dye and pigment. Since this composition contains the component A as a main component, a film formed on a finger nail can keep sufficient elasticity, luster and hardness of the film can be improved by the component B and the film can be released as a sheet of a film by tearing off it with the tip of a finger without using an eliminating solution. The component A is obtained by removing ammonia from natural rubber latex on the market under reduced pressure until its pH becomes 9.0-9.3 and used.

Description

[Detailed description of the invention] (Industrial application field) This invention relates to nail polish compositions.

(Prior Art) Nail polish compositions that are generally applied to nails are conventionally constructed by utilizing the film-forming properties of nitrocellulose.

That is, nitrocellulose is dissolved in an organic solvent such as ethyl acetate, butyl acetate, toluene, etc., a resin is added thereto to give it adhesive properties, and it is colored with a dye or pigment.

When this is applied to the surface of the nail with a brush, a two-colored film is formed. In the case of , 2, a tangent resin is blended as described above so that the film does not peel off easily. Therefore, in order to peel off the film once formed, a removal liquid containing an organic solvent as a main component is applied to dissolve the film. However, the solvent in these removers roughens and damages the nail surface, so
Its use is not preferred.

(Problems to be Solved by the Invention) An object of the present invention is to propose a nail polish composition that can directly remove the film formed on the nail without using any removal liquid containing a solvent.

(Means for Solving the Problems) This invention is characterized in that the main component is natural rubber latex, to which are added an emulsion resin obtained by emulsion polymerization of acrylic acid ester, a dye, and a pigment. .

Since the main ingredient is natural rubber latex, the film formed on the nail retains sufficient elasticity. In order to improve the gloss of this film, an emulsion resin obtained by emulsion polymerization of ruacrylic acid ester is added. This emulsion resin also acts effectively to improve the hardness of the membrane. By maintaining these elasticity and hardness, the strength of the film formed on the surface of the nail is maintained, and in order to remove it, you can freely turn it over with your fingertips and remove it as a single film. It becomes possible to peel it off while it remains continuous.

The natural rubber latex used here is commercially available natural rubber latex (rubber sap with concentrated ammonia water added, with a pH of about 10), which is depressurized.
Ammonia is removed until Pl+ is 9.0 to 9.3. The appropriate amount of natural rubber latex is 40 to 75% by weight.

If this amount is less than 40% by weight, the amount of natural rubber latex will decrease as a whole, and therefore the required elasticity will not be obtained as a single piece. Therefore, it is difficult to separate the film from the nail while the film remains intact. Moreover, if it exceeds 75% by weight, the amount of natural rubber latex will increase and the film itself will become weak. The most preferable amount of this natural rubber latex is 45 to 55% by weight.

Since acrylic acid ester is a resin that originally has gloss, adding an emulsion resin obtained by emulsion polymerization of the acrylic ester gives sufficient gloss to the formed film. A suitable amount for this addition is 10 to 40% by weight. If it is added in an amount less than 10% by weight, sufficient gloss cannot be obtained, and if it is added in an amount exceeding 40% by weight, the elasticity and strength of the film decrease, which is not preferable.

Further, dyes and pigments to be added may be added in an amount of about 0.1 to 7% by weight depending on general preference. Further, since a rubber material is used, it is preferable to add a preservative such as methyl p-oxybenzoate in an amount of about 0.1 to 0.2% by weight as a stabilizer.

In addition, polyvinyl alcohol (polymerization degree of 1000 or less) may be added from 0.5 to 0.5 to increase the gloss of the film if necessary.
It may be added in an amount of about 5%. However, if it is added in an amount exceeding 5% by weight, the film will easily dissolve in water, so it is necessary to avoid adding more than this amount.

(Example) Natural rubber latex with Pl+9.0 53% by weight emulsion resin 37/I preservative
0.2〃Polyvinyl alcohol 2.0II pigment dye
4.0 Water
3.8 Each of the above ingredients was adjusted and applied to the nails using a brush. The film formed on the surface of the nail stably adhered to the nail and did not come off even when washed with water. In order to remove this film, I peeled it off with my fingertips, and was able to peel it off as a continuous film.

(Effects of the Invention) As detailed above, according to the present invention, when the liquid is applied to the nails for manicure, the film formed on the nails can be removed using a conventional solvent-containing removal method. The film can be easily peeled off as it is and as a continuous film without using any liquid, so that it is possible to perform manicure without causing any damage to the nails.

Claims (1)

[Claims] A nail polish composition containing natural rubber latex as a main component, to which is added an emulsion resin obtained by emulsion polymerization of acrylic acid ester, a dye, and a pigment.