KR20140070035A - Pearlescent pigments having strong interference colors and cosmetic composition containing the same - Google Patents

Abstract

The present invention relates to pearlescent pigments having strong interference colors and a cosmetic composition including the same. The pearlescent pigments are manufactured by firstly forming a titanium dioxide layer using titanium isopropoxide (TTIP), and, then, secondly forming another titanium dioxide layer thereon. The pearlescent pigments are allowed to have a stronger interference effect of light by secondly coating a homogeneous and solid titanium dioxide layer on a firstly coated titanium dioxide layer. Therefore, the pearlescent pigments express stronger interference colors than conventional pearlescent pigments, and a cosmetic composition including the pearlescent pigments provides glossiness on the face and/or a fine sparkling effect so as to make the skin beautiful.

Description

TECHNICAL FIELD The present invention relates to a pearlescent pigment having a strong interference color and a cosmetic composition containing the same.

The present invention relates to a pearlescent pigment having a strong interference color, a method for producing such a pearlescent pigment and a cosmetic composition containing the same.

Luster pigments are widely used in industry, especially in automotive coatings, decorative coatings, plastics, paints, printing inks and cosmetic formulations. Especially in cosmetics, it gives a glossy (glaze) to the face by using interference color and surface reflection color, or gives a fine glitter effect to finish the skin brightly.

Generally, in the production of pearlescent pigments, tin dioxide (SnO ₂ ) as well as TiO ₂ in the rutile coating of titanium dioxide (TiO ₂ ) is immersed in mica flakes in an aqueous suspension and then the pigment is washed, dried and calcined .

Methods for the preparation of mica pigments containing rutile titanium dioxide are known from the German Federal Patent Specification Nos. 2,214,545 and 2,522,572, as well as U.S. Patent Specification No. 4,038,099. In the method of DE-A-2,522,572, a very thin titanium dioxide layer is first deposited on the mica flakes, then alternately deposited at least one SnO ₂ and TiO ₂ layer and a plurality of SnO ₂ and TiO ₂ layers Alternately depositing to form a thick layer. These SnO ₂ and TiO ₂ layers are prepared by adding a tin salt solution containing or not containing an oxidizing agent together with a base to maintain the pH constant or by slowly adding a titanium salt solution to the mica suspension. In this process, the deposition can be very easily continued until the metal oxide has the desired layer thickness and, consequently, the pigment has the desired interference color.

A very glossy pigment can be obtained by carrying out conventional cleaning, drying and calcination processes. The disadvantage, however, is that a relatively complex process is required for relatively thick layers. Moreover, this process requires a relatively large amount of tin dioxide, usually in the range of about 5 to 7% by weight for the finished pigment.

It is true that the methods of the Federal Republic of Germany 2,214,545 and U.S. 4,038,099 can also be carried out with small amounts of tin, but there are serious problems. In this method, a solution of tin salt is added to the mica suspension followed by a solution of strong acid and a portion of the tin precipitate as tin hydrous oxide on the mica flakes. Then, titanium dioxide solution was added to the mica flakes as a result of adding the titanium sulfate solution, heating the suspension to the boiling point and hydrolyzing and separating the solution, and the remaining tin during the reaction proceeded to form the titanium dioxide layer As tin oxide.

The thickness of the metal oxide layer and the interference color of the pigment due to the hydrolysis process are determined from the beginning as the amount of the metal salt to be added. It is impossible to adjust the progress of the coating process and in particular to determine the exact end point, as in the method of the Federal Patent No. 2,522,572.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a pearlescent pigment which is more suitable for use as cosmetics by exhibiting a stronger interference color than existing pearlescent pigments.

Another object of the present invention is to provide a method for producing the above-mentioned pearlescent pigment.

Another object of the present invention is to provide a cosmetic composition comprising the above-mentioned pearlescent pigment.

According to an aspect of the present invention,

Forming a titanium dioxide layer on the flake pigment, forming a titanium dioxide layer again on the formed titanium dioxide layer, and then firing the titanium dioxide layer,

The pearlescent pigment produced had a reflectance of 55-65% at 400 nm in the visible light region, a reflectance of 12-22% at 500 nm, a reflectance of 18-24% at 600 nm and a reflectance of 40-50% at 700 nm Provides a pearlescent pigment that is characterized.

Preferably, the pearlescent pigment according to the invention has a reflectance of 58 to 62% at 400 nm in the visible light region, 14 to 18% at 500 nm, 20 to 22% at 600 nm and 43 to 46% at 700 nm.

The present invention is characterized in that a titanium dioxide layer is formed on a flake pigment, a titanium dioxide layer is again formed on the titanium dioxide layer to be formed, and then the mixture is fired to increase the refractive index difference between the mother lacquer and the coating layer compared to the conventional pearlescent pigment This pearlescent pigment is coated with a uniform and dense titanium dioxide layer on the rutile-type titanium dioxide layer, which is first coated on the flake pigment, so that the interference effect of light is further enhanced. And thus the amount of reflection is also increased. Thus, it is confirmed that the skin can be lustered by imparting gloss or fine twinkling effect to the face during the production of cosmetics, thereby completing the present invention.

In addition,

(S1) firstly coating the flake pigment surface with titanium isoproxide (Titanium Isoporpoxside, TTIP) to form a titanium dioxide layer; And

(S2) a step of forming a secondary titanium dioxide layer on the formed titanium dioxide layer.

In the present invention, a uniform titanium dioxide layer is formed on the surface of the flaky pigment by coating using primarily reactive TTIP, wherein the amount of the primary titanium dioxide coating is 0.1 to 30 wt% based on the total weight of the flake pigment By weight, preferably 5 to 25% by weight.

If the amount of the titanium dioxide coating by the TTIP is less than 0.1 wt%, it is difficult to expect an increase in the interference effect of the objective of the present invention. If it exceeds 30 wt%, the TTIP is used in a large amount, I do not.

In addition, in the present invention, TiCl ₄ may be used in addition to TTIP in the formation of the primary titanium dioxide layer. In this case, the amount of titanium dioxide coated by TiCl ₄ is 30 wt% or less, preferably 20 wt% or less.

When the amount of titanium dioxide coating by TiCl ₄ is more than 30 wt%, the amount of TTIP used is relatively reduced, and it is difficult to expect the desired effect of interference of light in the present invention.

Accordingly, in the present invention, the amount of the primary titanium dioxide coating having the best effect of interference of light is 0.1 to 60 wt% in terms of the sum of the amount of titanium dioxide coating by TTIP and the amount of coating by TiCl ₄ in the case of coating with TiCl ₄ in addition to TTIP %, Preferably 5 to 40 wt%.

In the present invention, a secondary titanium dioxide layer is formed after the primary titanium dioxide layer is formed, and TTIP, TiCl ₄ , or a mixture thereof is used to form the secondary titanium dioxide layer while maintaining the pH and the temperature. The coating amount of the secondary titanium dioxide is 5 to 50 wt%, preferably 10 to 30 wt%, based on the total weight of the flake pigment in which the primary titanium dioxide layer is formed.

If the coating amount of the secondary titanium dioxide is less than 5 wt%, the interference effect is degraded. If the coating amount is more than 50 wt%, the secondary titanium dioxide is uneconomical to the effect.

In the production of the pearlescent pigment of the present invention, the formation of the primary and secondary titanium dioxide layers can be carried out according to conventional coating conditions, for example, preferably at 20 to 90 ° C.

After the formation of the titanium dioxide layer, a firing process is performed according to a conventional method for producing a pearlescent pigment, whereby a pearlescent pigment having a strong interference color according to the present invention can be produced.

The firing step in the production of the pearlescent pigment of the present invention may be carried out according to conventional firing conditions, and is preferably performed at 750 to 950 ° C for 50 to 100 minutes, for example.

Examples of the powder (mother liquor) that can be used in the production of the pearlescent pigment of the present invention include mica, sericite, talc, flaky silica, alumina, barium sulfate and bismuth oxychloride.

The pearl luster pigment of the present invention is coated with a uniformly dense titanium dioxide layer on the primary coated titanium dioxide layer once more, thereby further increasing the interference effect of light, thereby exhibiting a stronger interference color than the conventional pearl luster pigment And the amount of reflection thereof is greatly increased, so that it is suitable for use in cosmetics intended for gloss or glittering effect.

Accordingly, the present invention provides a cosmetic composition comprising the pearlescent pigment.

The pearl luster pigment produced in the present invention may be blended with an additive such as oil, wax, water or the like, alone or in combination with a conventional powder, to prepare a face powder, a compact, a powder foundation, a two- , Liquid Foundation, Cream Foundation Base Makeup, Eye Shadow, Powder Blush, Lipstick, Eyeliner, and Mascara.

The pearlescent pigment of the present invention may be contained in an amount of 0.01 to 60% by weight, preferably 0.1 to 50% by weight, more preferably 0.5 to 10% by weight based on the total weight of the cosmetic. If the amount of the pearlescent pigment contained in the cosmetic composition is less than 0.01% by weight, the cosmetic effect is insignificant, and if it exceeds 60% by weight, the feeling of use and the shape of the cosmetic composition may occur.

The cosmetic composition containing the pearlescent pigment of the present invention has an excellent effect of lustering the face or imparting a fine glitter effect to brighten the skin.

The pearl luster pigment according to the present invention can be obtained by first forming a titanium dioxide layer using TTIP and secondarily forming a uniform and dense titanium dioxide layer on the titanium dioxide layer to further increase the difference in refractive index between the paint and the coating layer, And thus a strong interference color can be exhibited as compared with the existing pearlescent pigment, and the amount of reflection can be greatly increased. Therefore, the cosmetic composition containing such a pearl luster pigment has excellent effect of lustering or fine-twinkling the face to brighten the skin.

FIG. 1 is a graph showing the spectral reflectance of pearl luster pigments prepared according to the present invention and spectral reflectance of pearl luster pigments prepared according to the conventional method. The spectral reflectance of the pearl luster pigments prepared according to the present invention is It can be seen that the spectral reflectance is high in all regions as compared with the pearlescent pigment produced by the production method.
FIG. 2 is a graph showing the spectral reflectances of cosmetic compositions containing the pearlescent pigments prepared according to the present invention and the pearlescent pigments prepared according to the conventional methods, respectively. The pearlescent pigments prepared according to the present invention It can be seen that the spectral reflectance of the applied cosmetic exhibits a high spectral reflectance in all regions.

Hereinafter, production examples and examples will be described in detail to facilitate understanding of the present invention. However, the production examples and examples according to the present invention can be modified into various other forms, and the scope of the present invention should not be construed as being limited to the following production examples and examples. The production examples and embodiments of the present invention are provided to enable those skilled in the art to more fully understand the present invention.

PREPARATION EXAMPLE 1 Preparation of Pearl Gloss Pigment Coated Firstly with TiCl ₄ and TTIP followed by Second Coating Using TiCl ₄

Firstly, titanium dioxide coating layer was formed by using TTIP and TiCl _4, which are excellent in reactivity, and titanium dioxide was coated thereon by controlling the reaction rate and temperature by using TiCl ₄ thereon. Then, after aging for a certain time, And then fired. Specifically, a pearlescent pigment is prepared according to the following process.

Step 1 Process

1-1. A plate-like mica slurry solution is prepared by stirring a plate-like mica and purified water in a reactor, and then heated to 80 DEG C and then lowered to a pH of 1.8 with an HCl solution.

1-2 tin salt dilution solution is slowly added to the plate mica slurry solution. At the same time, the NaOH solution is simultaneously fed to maintain the pH of 1.8.

1-3 that is then added to the TiCl ₄ solution was slowly diluted with. At the same time, the NaOH solution is simultaneously fed to maintain the pH of 1.8.

1-4 After aging for 2 hours after completion of the reaction, filter it through the filter.

1-5 Filtration and drying in a drying oven at 100 ° C for 12 hours.

2-step process

2-1 TTIP is added to isopropyl alcohol (IPA), and a titanium dioxide-coated plate-like mica prepared and dried in step 1 is added thereto to prepare a slurry solution.

2-2 While stirring the aqueous solution of the slurry, the purified water is slowly added in a fixed amount to react.

2-3 After aging for 2 hours after completion of the reaction, filter it through the filter.

After 2-4 filtration, it is dried in a drying oven at 100 ° C for 12 hours.

3-step process

3-1 A slurry solution was prepared by stirring the titanium dioxide-coated plate-like mica prepared and dried in the above step 2 and purified water. The slurry solution was heated to 80 ° C and lowered to pH 1.8 with HCl solution.

A 3-2 tin salt dilution solution was slowly added to the titanium dioxide coated mica slurry solution. At the same time, the NaOH solution is simultaneously fed to maintain the pH of 1.8.

3-3 The TiCl ₄ solution was then slowly added. At the same time, the NaOH solution is simultaneously fed to maintain the pH of 1.8.

3-4 After completion of the reaction, after aging for 2 hours, filter it through the filter.

3-5 After filtration, it is dried in a drying oven at 100 ° C for 12 hours.

3-6 The dried powder is fired at 850 ° C for 1 hour in a firing furnace.

PREPARATION EXAMPLE 2 Preparation of Pearl Gloss Pigment Coated Firstly with TiCl ₄ and TTIP and Second Coated Using TTIP

Firstly, titanium dioxide coating layer was formed by using TTIP and TiCl _4, which are excellent in reactivity, and titanium dioxide was coated on the TiO 2 coating layer by controlling the reaction rate and temperature by using TTIP, followed by aging for a certain period of time, Fired. Specifically, a pearlescent pigment is prepared according to the following process.

Step 1 Process

1-1 A plate-like mica slurry solution was prepared by stirring plate mica and purified water in a reactor, heated to 80 ° C and then lowered to pH 1.8 with HCl solution

1-2 tin salt dilution solution was slowly added to the plate mica slurry solution. At the same time, the NaOH solution is simultaneously fed to maintain the pH of 1.8.

1-3 that was then added to the TiCl ₄ solution was slowly diluted with. At the same time, the NaOH solution is simultaneously fed to maintain the pH of 1.8.

1-4 After aging for 2 hours after completion of the reaction, filter it through the filter.

1-5 Filtration and drying in a drying oven at 100 ° C for 12 hours.

2-step process

2-1 TTIP is added to isopropyl alcohol (IPA), and a titanium dioxide-coated plate-like mica prepared and dried in step 1 above is added thereto to prepare a slurry solution.

2-2 While stirring the aqueous solution of the slurry, the purified water is slowly added in a fixed amount to react.

2-3 After aging for 2 hours after completion of the reaction, filter it through the filter.

After 2-4 filtration, it is dried in a drying oven at 100 ° C for 12 hours.

3-step process

3-1 TTIP is added to isopropyl alcohol (IPA), and a titanium dioxide-coated plate-like mica prepared in the above step 2 and dried is added thereto to prepare a slurry solution.

3-2 While stirring the aqueous solution of the slurry, the purified water is slowly added dropwise to react.

3-3 After completion of the reaction, after aging for 2 hours, filter it through the filter.

After 3-4 filtration, it is dried in a drying oven at 100 ° C for 12 hours.

3-5 The dried powder is calcined in a firing furnace at 850 ℃ for 1 hour

PREPARATION EXAMPLE 3 Preparation of Pearl Gloss Pigment Coated with TTIP Primarily Coating and Second Coating Using TiCl ₄

Firstly, titanium dioxide coating layer is formed by using TTIP having excellent reactivity, and titanium dioxide is coated on the TiO ₄ layer by controlling the reaction rate and temperature using TiCl ₄ , followed by aging for a certain period of time, followed by filtration, drying and firing . Specifically, a pearlescent pigment is prepared according to the following process.

Step 1 Process

1-1 TTIP is added to isopropyl alcohol (IPA), and a plate-like mica is added thereto to prepare a slurry solution.

1-2 While the slurry aqueous solution is stirred, the purified water is slowly added in a fixed amount to react.

1-3 After aging for 2 hours after completion of the reaction, filter it through the filter.

1-4 Filtration and drying in a drying oven at 100 ° C for 12 hours.

2-step process

2-1 A slurry solution was prepared by stirring the titanium dioxide-coated plate-like mica prepared and dried in step 1 above and purified water, and then heated to 80 ° C and lowered to pH 1.8 with HCl solution.

A 2-2 tin salt dilution solution was slowly added to the titanium dioxide coated mica slurry solution. At the same time, the NaOH solution is simultaneously fed to maintain the pH of 1.8.

2-3 The TiCl ₄ solution was then slowly added. At the same time, the NaOH solution is simultaneously fed to maintain the pH of 1.8.

2-4 After completion of the reaction, after aging for 2 hours, pass through filter and filter.

2-5 After filtration, it is dried in a drying oven at 100 ° C for 12 hours.

2-6 The dried powder is fired at 850 ° C for 1 hour in a firing furnace.

<Production Example 4> TiCl ₄ with a primary coating and a second coating after firing drive using TiCl ₄ as pearlescent pigment production process TTIP

Firstly, titanium dioxide coating layer was formed by using TTIP and TiCl _4, which are excellent in reactivity, and titanium dioxide was coated thereon by controlling the reaction rate and temperature by using TiCl ₄ thereon. Then, after aging for a certain time, And then fired. Specifically, a pearlescent pigment is prepared according to the following process.

Step 1 Process

1-1 A plate-like mica slurry solution was prepared by stirring plate mica and purified water in a reactor, heated to 80 ° C and then lowered to pH 1.8 with HCl solution

1-2 tin salt dilution solution was slowly added to the plate mica slurry solution. At the same time, the NaOH solution is simultaneously fed to maintain the pH of 1.8.

1-3 that was then added to the TiCl ₄ solution was slowly diluted with. At the same time, the NaOH solution is simultaneously fed to maintain the pH of 1.8.

1-4 After aging for 2 hours after completion of the reaction, filter it through the filter.

1-5 Filtration and drying in a drying oven at 100 ° C for 12 hours.

2-step process

2-1 TTIP is added to isopropyl alcohol (IPA), and a titanium dioxide-coated plate-like mica prepared and dried in step 1 above is added thereto to prepare a slurry solution.

2-2 While stirring the aqueous solution of the slurry, the purified water is slowly added in a fixed amount to react.

2-3 After aging for 2 hours after completion of the reaction, filter it through the filter.

After 2-4 filtration, it is dried in a drying oven at 100 ° C for 12 hours.

2.5 The dried powder is fired at 850 ° C for 1 hour in a firing furnace.

3-step process

3-1 A slurry solution was prepared by stirring the titanium dioxide-coated plate-like mica prepared and dried in the above step 2 and purified water. The slurry solution was heated to 80 ° C and lowered to pH 1.8 with HCl solution.

A 3-2 tin salt dilution solution was slowly added to the titanium dioxide coated mica slurry solution. At the same time, the NaOH solution is simultaneously fed to maintain the pH of 1.8.

3-3 The TiCl ₄ solution was then slowly added. At the same time, the NaOH solution is simultaneously fed to maintain the pH of 1.8.

3-4 After completion of the reaction, after aging for 2 hours, filter it through the filter.

3-5 After filtration, it is dried in a drying oven at 100 ° C for 12 hours.

3-6 The dried powder is fired at 850 ° C for 1 hour in a firing furnace.

&Lt; Comparative Example 1 &

According to the composition shown in the following Table 1, a conventional pearlescent pigment and raw materials 6 to 14 as raw materials were mixed and pulverized to prepare a powder-fact cosmetic composition by a conventional method.

&Lt; Example 1 >

According to the composition shown in the following Table 1, the pearl luster pigment and the raw materials 6 to 14, which were two raw materials and were prepared according to Preparation Example 1, were mixed and pulverized to prepare a powder fact cosmetic by a conventional method.

&Lt; Example 2 >

According to the composition shown in the following Table 1, the pearl luster pigment and the raw materials 6 to 14, which were the raw materials and were produced according to Preparation Example 2, were mixed and pulverized to prepare a powder fact cosmetic by a conventional method.

&Lt; Example 3 >

According to the composition shown in the following Table 1, the pearl luster pigment and the raw materials 6 to 14 prepared in accordance with Preparation Example 3 of the raw material 4 were mixed and pulverized to prepare a powder fact cosmetic by a conventional method.

<Example 4>

According to the composition shown in the following Table 1, the pearl luster pigment and the raw materials 6 to 14 prepared in accordance with Preparation Example 4 of the raw material 5 were mixed and pulverized to prepare a powder fact cosmetic by a conventional method.

number Raw material name Comparative Example 1
(weight%) Example 1
(weight%) Example 2
(weight%) Example 3
(weight%) Example 4
(weight%) One Conventional pearlescent pigment according to the conventional manufacturing method 5.0 - - - - 2 The pearlescent pigment prepared according to Preparation Example 1 - 5.0 - - - 3 The pearlescent pigment prepared according to Preparation Example 2 - - 5.0 - - 4 The pearlescent pigment prepared according to Preparation Example 3 - - - 5.0 - 5 The pearlescent pigment prepared according to Preparation Example 4 - - - - 5.0 6 Seri Site 10.0 10.0 10.0 10.0 10.0 7 Talc  100% by weight &lt; RTI ID = 0.0 &gt;% & 100% by weight &lt; RTI ID = 0.0 &gt;% & 100% by weight &lt; RTI ID = 0.0 &gt;% & 100% by weight &lt; RTI ID = 0.0 &gt;% & 100% by weight &lt; RTI ID = 0.0 &gt;% & 8 Silica 10.0 10.0 10.0 10.0 10.0 9 Nylon powder 5.0 5.0 5.0 5.0 5.0 10 Titanium dioxide 6.0 6.0 6.0 6.0 6.0 11 Iron oxide pigment 6.0 6.0 6.0 6.0 6.0 12 Ester oil 5.0 5.0 5.0 5.0 5.0 13 Silicone oil 4.0 4.0 4.0 4.0 4.0 14 Spices 0.3 0.3 0.3 0.3 0.3

&Lt; Test Example 1 > Measurement of spectral reflectance

The same amount of violet pearl was added to each of the pearl luster pigment of the present invention prepared in Preparation Example 1 and the pearl luster pigment prepared in accordance with the conventional method, and the spectral reflectance was measured. The results are shown in Fig.

Powder fact cosmetics containing the pearlescent pigment of the present invention prepared in accordance with Example 1 and powderspact cosmetics containing the pearlescent pigment prepared according to the conventional general manufacturing method produced according to Comparative Example 1 were each in the same amount And the spectral reflectance was measured. The results are shown in FIG.

1, the pearlescent pigment produced according to the present invention exhibited a reflectance within a range of 55 to 65% at 400 nm, a reflectance within a range of 12 to 22% at 500 nm, The reflectance was within the range of 18 to 24%, and the reflectance at the wavelength of 700 nm was within the range of 40 to 50%.

On the other hand, it can be seen that the reflectance of the pearlescent pigment prepared according to the conventional general production method is lower than that of the pearlescent pigment of the present invention.

<Test Example 2> cosmetic effect evaluation

The spectral reflectances of the cosmetics prepared in Examples 1 to 4 and Comparative Example 1 were evaluated using a spectral colorimeter (CM-512m3, Minolta).

The resulting pearlescent pigment was dispersed in cellulose lacquer (2 g of pigment was mixed with 30 g of cellulose lacquer), coated on a black and white paper with a thin film (120um) using a bar coater, dried, and the spectral reflectance CM-512m3 (Y (D65))), and the results are shown in Table 2 below.

division Comparative Example 1 Example 1 Example 2 Example 3 Example 4 Reflectance (Y (D65)) 10.1 14.7 15.8 15.5 15.1

As shown in Table 2, in Examples 1 to 4, in which cosmetic materials were prepared using the pearlescent pigments prepared according to the present invention, the reflectance was much improved compared to the cosmetic materials of Comparative Example 1 using conventional pearlescent pigments Able to know. In particular, the pearlescent pigment produced in Example 2 exhibited the highest reflectivity because it was due to the denser and uniform coating of the titanium dioxide layer.

<Test Example 3> The cosmetic sensory evaluation

The cosmetic compositions prepared in Examples 1 to 4 and Comparative Example 1 were subjected to sensory evaluation as follows.

30 women aged 20 to 40 years were subjected to a blind test using the cosmetics prepared in Examples 1 to 4 and Comparative Example 1, and then evaluated for luster. The results are summarized in Table 3 below.

division Comparative Example 1 Example 1 Example 2 Example 3 Example 4 Bright 3.3 4.1 4.3 4.1 4.0

As can be seen from Table 3, the cosmetic using the pearlescent pigment produced according to the present invention is improved in color as compared with the conventional pearlescent pigment.

Claims (10)

Forming a titanium dioxide layer on the flake pigment, forming a titanium dioxide layer again on the formed titanium dioxide layer, and then firing the titanium dioxide layer,
The pearlescent pigment produced had a reflectance of 55-65% at 400 nm in the visible light region, a reflectance of 12-22% at 500 nm, a reflectance of 18-24% at 600 nm and a reflectance of 40-50% at 700 nm Features pearlescent pigment. (S1) firstly coating the flake pigment surface with titanium isoporpoxide (TTIP) to form a titanium dioxide layer and
(S2) forming a secondary titanium dioxide layer on the titanium dioxide layer formed. The method of claim 2, wherein the production method characterized by using in addition to titanium tetrachloride (TiCl ₄₎ in the step of forming the first titanium oxide layer. 4. The method according to claim 3, wherein the coating amount of the primary titanium dioxide layer is 0.1 to 60% by weight based on the flake pigment. 5. The process according to claim 4, wherein the coating amount is 5 to 40% by weight based on the flake pigment. The method according to claim 2, wherein TTIP, TiCl ₄ , or a mixture thereof is used in the step of forming the secondary titanium dioxide layer. 3. The method according to claim 2, wherein the coating amount of the secondary titanium dioxide is 5 to 50 wt% based on the total weight of the flake pigment in which the primary titanium dioxide layer is formed. The production method according to claim 2, wherein at least one selected from the group consisting of mica, sericite, talc, plate-like silica, alumina, barium sulfate and bismuth oxychloride is used as the powder at the time of producing the pearlescent pigment . A cosmetic composition comprising the pearlescent pigment of claim 1. A cosmetic composition comprising a pearlescent pigment produced by the method of any one of claims 2 to 8.

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