KR20010057526A - Cosmetic composition containing silica coated color - Google Patents

Abstract

PURPOSE: Powder color cosmetics obtained by uniformly mixing a platelet-type pigment coated with silica of nanometer level, titanium dioxide and a colorant and adding oil as a binder, grinding and molding are provided, which have reduced oiliness while maintaining feeling in use and a cosmetic effect as compared to conventional color cosmetics. CONSTITUTION: The powder color cosmetics contain 5 to 90% by weight of a pigment coated with silica having 10 to 100nm units, wherein the pigment is coated with 10 to 30 parts by weight of silica of nanometer level by a sol-gel coating method. The pigment coated with silica contains talc, mica and sericite.

Description

Cosmetic composition containing silica coated color}

The present invention relates to powdery color cosmetics containing pigments coated with silica. More specifically, the present invention is wetted by the specular reflection of the light and sebum secreted by using a pigment coated with a nanometer silica in the cosmetics for facial makeup prepared by mixing the pigment and the pigment and using the oil as a binder. It relates to powder powder color powder, characterized in that to reduce the appearance of shine when.

Conventional powder powder cosmetics can be divided into face powder, compact, cheek oil, eye shadow, two-way cake, powder foundation, etc., depending on the composition ratio and formulation of the powder-oil component, and applied to the skin for about 4 hours. For 8 hours. In general, powders used in powder products are mainly used as plate pigments having high specular reflectance against light, and the resulting bleeding causes cosmetic effects such as unnatural makeup. In addition, the greasy phenomenon that occurs when the powder applied to the skin by the sebum secreted from the skin during application time is the biggest complaint of women using powdery color cosmetics.

In order to solve this problem, in the prior art (JP JP 10-212211), efforts have been made to reduce shine by scattering light using a titanium oxide porous body that is a flake titanium oxide aggregate in nanometer units, but unnaturalness due to the whiteness of titanium oxide itself. And there are many difficulties in application because of the formability. In addition, in JP 7-119168, powders coated with silicone or fluorine-based surface treatment agents were used to reduce the grease caused by excessive secretion of sebum by preventing the powder from getting wet with sebum due to fluorine-specific oil repellency. The problem with the formulation, that is, the powder does not get wet due to the strong oil repellent property, but there was a lot of difficulties in the application due to the lumping of the makeup itself. In addition, efforts have been made to absorb excess sebum secreted by blending powders with excellent oil absorption properties, but in addition, considering the amount of powder applied to the face and the amount of sebum secreted, it is currently necessary to completely absorb the sebum to eliminate grease. It is impossible for me.

The present invention has been devised based on the above facts, and the present inventors have tried to improve the light state of such powdery tint cosmetics and the change of makeup state due to sebum, such as bleeding, due to light, which is the root cause of shine. Reducing the specular reflection can reduce the visual shine even if secretion and sebum is secreted. Therefore, the pigment coated with nanometer silica was used. That is, there is an effect of scattering the light incident by fine unevenness formed by coating the nanometer-sized silica on the plate-shaped pigment surface, and even when the powder is wet by sebum secreted over time, the final bleeding phenomenon is remarkably reduced. It was confirmed to complete the present invention. Accordingly, it is an object of the present invention to provide powdery tinctures which are useful for reducing the light reflecting phenomenon caused by sebum and specular reflection of light by containing pigments coated with nanometer silica.

Hereinafter, the present invention will be described in more detail.

The plate-like pigment coated with silica, titanium dioxide, and pigment are mixed and uniformly mixed, and then the oil used as a binder is mixed with these particles to be pulverized and molded to prepare a cosmetic for facial makeup.

The present invention uses pigments coated with silica in units of 10-100 nanometers to reduce the specular reflection of light by light and excessively secreted sebum to provide excellent cosmetics to reduce the phenomenon of shine and consequently increase the makeup lasting.

Silica thin film production of the pigment used in the present invention, unlike the conventional thin film deposition method was selected sol-gel process that can synthesize the thin film at a relatively low temperature, easy stoichiometric control, easy purification of the raw material.

In thin film manufacturing, TEOS (Si (OC ₂ H ₅ ) ₄ ) was used as a starting material for the production of silica sol, which is the first step, ethanol and distilled water were used as solvent, and hydrochloric acid as a catalyst for preparing a clear and transparent sol. Was used. The silica sol prepared by the above method was subjected to a sol-gel coating method through a condensation reaction on the surface of fine pigments such as talc, mica and sericite, which are mainly used in powdery color cosmetics, and fine pigments such as dyes. 10-30 parts by weight (wt%) is used to coat.

The type and content of the silica-coated pigment used in the present invention are not particularly limited, but are generally used in powdery tint cosmetics, and since the particle shape is plate-like, talc, mica, and sericite having high specular reflectance to light are used. 5-90 parts by weight was used, and preferably 30-70 parts by weight of the excellent light reflecting effect is reduced. When the silica-coated pigment is 5 parts by weight or less, the desired degree of lubrication improvement does not appear, and at 90 parts by weight or more, there is a problem in feeling of use and formulation.

Hereinafter, the specific configuration and operation of the present invention will be described in more detail based on Examples and Comparative Examples. However, the present invention is not limited to the following examples.

Example 1

According to the composition ratio of Table 1, the raw materials 1 to 7 were mixed and pulverized, the raw material 11 (flavor) was sprayed, and the raw materials 8 to 10 were dissolved by spraying, followed by mixing and grinding to prepare a two-way cake.

Cosmetic composition ratio for 2 way cake (part by weight) Raw material name Example 1 Example 2 Comparative Example 1 Silica Coated Mica 2. Mica 3. Silica coated sericite4. Serisite 5. Silica coated talc 6. Talc 7. Nylon Powder 8. Titanium dioxide 9. Iron oxide pigment 10. Liquid paraffin 11. Silicone Oil 12. Preservative 13. incense To 100--20.0-10.010.010.06.05.04.00.20.3 To 100-20.0-10.0-Left Left -To 100-20.0-10.0 Left East Left East Left East Left East Left East

Example 2

A two-way cake was prepared in the same manner as in Example 1, except that sericite and talc coated with silica were used.

Comparative Example 1

A two-way cake was prepared in the same manner as in Example 1 except that the pigment coated with silica was not used.

Specular reflectance measurement

Specular reflectance by light was measured for the products prepared in Examples 1 and 2 and Comparative Example 1, and the results are shown in Table 2 below. The specular reflectance by light was measured with a Gloss meter (Nippon Denshoku Kogyo Co. Ltd.) and specular reflectance was measured at -10 degrees and at +10 degrees.

Comparison of specular reflectance by light division Example 1 Example 2 Comparative Example 1 Remarks Specular reflectance 35 14 67

As shown in Table 2, when the silica-coated pigment is used, it can be seen that the specular reflectance is significantly reduced due to scattering of light by the silica coated on the pigment surface. This is because nanometer silica coated on the surface of the pigment diffusely reflects light in an uneven manner. This is a dramatic improvement of the lubrication phenomenon without a change in formulation and feel compared to previous studies.

Sensory evaluation

In order to determine the difference in the shine when applying the pigment coated with silica, 30 women aged 20 to 50 years were blinded on the products prepared in Examples 1, 2 and Comparative Example 1 The test was carried out and the sensory evaluation of feeling and condition during make-up was shown in Table 3 below.

Usability evaluation result division Example 1 Example 2 Comparative Example 1 Remarks Bundling Improvement 3.8 4.2 2.7 Feeling 3.5 3.8 3.0 Makeup effect 3.7 4.3 3.0

The evaluation criteria of Table 3 are as follows and each value is shown by the statistical process. (5: very good, 4: excellent, 3: normal, 2: bad, 1: very bad)

Example 3 and Comparative Example 2

The raw materials of 1 to 7 were mixed and pulverized according to the composition ratio of Table 4 below, the fragrance of 11 was sprayed, the raw materials of 8 to 10 were melted and sprayed, and then mixed and ground to prepare a compact.

Cosmetic composition ratio for compact (part by weight) Example 3 Comparative Example 2 1. Silica Coated Talc 2. Talc 2. Silica Coated Sericite 3. Sericite 4. Silica Coated Calcium Carbonate 5. Calcium Carbonate 5. Spherical Silica 6. Silica Coated Mica Titanium 7. Mica Titanium 7. Iron Oxide Pigment 8. Silicone Oil 9.Fluid Paraffin 10.Preservative 11.Fragrance to 100-15.0-5.0-5.05.0-4.04.01.00.20.3 -to 100-15.0-5.0 Left East-5.0 Left East Left East Left East East

Blind test

The blind test was conducted on 30 women aged 20 to 50 years with respect to the products prepared in Example 3 and Comparative Example 2, and the results are shown in Table 5 below.

Blind test results division Example 3 Comparative Example 2 Remarks Bundling Improvement 4.0 2.9 Feeling 3.7 3.5 Makeup effect 4.3 3.4

As shown in Tables 2, 3, and 5, powdered whitening cosmetics containing pigments coated with silica were particularly excellent in lubrication improvement effect in a state in which the product usability and make-up effect were maintained compared to conventional powdered whitening cosmetics.

As described above and as can be seen through the Examples and Comparative Examples, the present invention can provide a powder coloring tincture that reduces the specular reflection of light by light and excess secreted sebum to reduce the bleeding phenomenon and increase the makeup persistence. It is a very useful invention in the cosmetic industry.

Claims (3)

White powder color cosmetics, characterized in that it contains 5-90% by weight of the pigment coated with silica of 10-100nm unit. The powder coating method according to claim 1, wherein the silica coating method is a sol-gel thin film coating method, and 10-30 parts by weight (wt%) of the nanometer silica thin film is coated. The powdery white color cosmetic according to claim 1, wherein the silica coated pigment is talc, mica, sericite.