KR101836159B1 - Titanium dioxide-coated inorganic pigment powder mixture and cosmetic composition containing the same - Google Patents

Abstract

The present invention provides a titanium dioxide-coated inorganic pigment mixture powder containing a mixture of a red composite powder, a green composite powder, a blue composite powder and a yellow composite powder as a composite powder coated with an inorganic pigment-based titanium dioxide and a cosmetic composition containing the same do.

Description

TECHNICAL FIELD [0001] The present invention relates to a titanium dioxide-coated inorganic pigment powder and a cosmetic composition containing the titanium dioxide-coated inorganic pigment powder and a cosmetic composition containing the same.

The present invention relates to a titanium dioxide-coated inorganic pigment mixed powder and a cosmetic composition containing the same.

Cosmetics are divided into base makeup cosmetics to be applied to the entire face and point makeup cosmetics to apply only a small part of the face. Double base makeup cosmetics are often used for the purpose of expressing clean skin by covering the stain, wrinkles and lighting of the face.

In order to cover the defects of the skin and to express clean and whitish skin, titanium dioxide, that is, white pigment having a high refractive index is applied to various formulations so that it can be applied to skin defects, stains, freckles and the like.

However, because of the high refractive index of titanium dioxide, it is covered with skin defect, but it has the disadvantage that it reflects blue light and is unnaturally expressed. Also, the result is that the oil is easily bundled by sebum due to low oil absorption after application.

In addition, the most widely applied method is to apply boron nitride having a plate-like structure although the refractive index is slightly lower than that of titanium dioxide. However, this method also has a disadvantage in that it tends to be bundled and bundled due to unnatural expression and weak sebum persistence.

Japanese Patent Application Laid-Open No. 2000-226307

Disclosure of the Invention In order to solve the above-mentioned problems, the present invention provides a titanium dioxide-coated inorganic pigment powder mixture which can be used as a natural cover and a clean white skin expression by utilizing the interference effect of light generated by mixing the composite powder of various colors, It is an object of the present invention to provide a cosmetic composition.

In order to solve the above-mentioned problems, the present invention provides a composite powder coated with titanium dioxide in the form of an inorganic pigment, comprising a titanium dioxide-coated inorganic pigment powder mixture containing a mixture of a red composite powder, a green composite powder, a blue composite powder and a yellow composite powder Lt; / RTI >

In one embodiment of the present invention, the inorganic pigment may be at least one selected from the group consisting of mica, synthetic mica, talc and sericite.

In one embodiment of the present invention, the inorganic pigment may be mica.

In one embodiment of the present invention, the average particle size of the composite powder may be 15 to 40 탆.

In addition, the present invention provides a cosmetic composition comprising the above-described powder mixture as an active ingredient.

In one embodiment of the present invention, the composition may contain 5 to 20% by weight of the mixed powder.

The titanium dioxide-coated inorganic pigment composite powder of the present invention can be broadly applied to a cosmetic composition for base make-up since it has an optical whitening effect and can provide a natural whiteness covering ability and a clean and white skin expression power.

Hereinafter, preferred embodiments of the present invention will be described in detail in order to facilitate the present invention by those skilled in the art.

The present invention provides a titanium dioxide-coated inorganic pigment mixed powder containing a mixture of a red composite powder, a green composite powder, a blue composite powder and a yellow composite powder as a composite powder coated with an inorganic pigment-like titanium dioxide.

That is, the titanium dioxide-coated inorganic pigment mixed powder according to the present invention is a mixed powder obtained by mixing four kinds of composite powders coated with titanium dioxide on an inorganic pigment. The four composite powders are red, green, blue, and yellow, respectively, depending on the thickness of the coating layer of titanium dioxide coated on the inorganic pigment. Accordingly, the inorganic pigment composite powder showing red light, the inorganic pigment composite powder showing green light, the inorganic pigment composite powder showing blue light, and the inorganic pigment composite powder showing yellow light have the same composition as the titanium dioxide coating layer, There is a difference in thickness. It has been widely applied as an inorganic powder which exhibits light interference effect in all of the cosmetic compositions already known.

Specifically, in the present invention, the composite powder exhibiting red color has a lightness (L) of 40 to 50 in the CIELAB color system using a colorimeter, a * in the chromaticity coordinate of a * 10 to 15, and a b * May satisfy the color coordinates of -5 to 0 at the same time.

Further, in the present invention, the green composite powder may be prepared by using a colorimeter, wherein the brightness (L) of the CIELAB colorimetric system is 50 to 60, the a * of the chromaticity coordinates is a-13 to -8, b * may satisfy the color coordinates of -2 to 3 at the same time.

Further, in the present invention, the composite powder exhibiting blue color is obtained by using a colorimeter to calculate the brightness (L) of the CIELAB colorimetric system is 40 to 50, the a * of the chromaticity coordinate a * is 0 to 5, The color coordinates of -23 to -18 can be satisfied at the same time.

In the present invention, the composite powder exhibiting yellow color is characterized in that the CIELAB colorimetric system has a lightness (L) of 60 to 70, a * in the X-axis of the chromaticity coordinates is -3 to 2 and b * May satisfy the color coordinates of 8 to 13 at the same time.

The mixture contains 41 to 43% by weight of composite powder showing red color, 17 to 19% by weight of composite powder showing green, 17 to 19% by weight of composite powder showing blue color and 21 to 23% by weight of composite powder showing yellow color desirable. The natural whitening effect of the present invention can be achieved only when the inorganic pigment composite powders of four colors are mixed at the same time. When the red inorganic pigment composite powder is less than 41 wt%, the a * value of the X axis of the chromaticity coordinates is negative (-) to show green light, and when it exceeds 43 wt%, red light appears. When the green inorganic pigment composite powder is less than 17% by weight, red light appears, and when it is more than 19% by weight, green light appears. When the blue inorganic pigment composite powder is less than 17% by weight, yellow light appears, and when it is more than 19% by weight, blue light appears. When the amount of the yellow inorganic pigment composite powder is less than 21 wt%, blue light appears. When the amount is more than 23 wt%, yellow light is exhibited, so that it is difficult to exhibit clean white light appearing at the above mixing ratio. It becomes impossible.

In the present invention, the inorganic pigment is not particularly limited, but may be at least one selected from the group consisting of mica, synthetic mica, talc and sericite. More preferably, it may be myc.

In the present invention, the average particle size of the inorganic pigment composite powder (red light composite powder, green light composite powder, blue light composite powder and yellow light composite powder) may be 15 to 40 탆. When the average particle size is less than 15 탆, the whitening phenomenon occurs and the visual whitening effect due to the interference effect is lowered and the unnatural color is expressed. When the particle size exceeds 40 탆, the particles are rough and the interference effect is not clear, And it is not preferable.

The method for producing the titanium dioxide-coated inorganic pigment mixed powder according to the present invention is not particularly limited, but may be, for example, as follows.

First, red, green, blue and yellow light inorganic pigment composite powders are prepared. The red, green, blue and yellow light composite powders may be commercially available ones and may be prepared by directly coating an inorganic pigment with titanium dioxide of a corresponding thickness. Then, the four kinds of red, green, blue and yellow light composite powders are put into a Henschel mixer and mixed at a low speed of less than RPM500. The mixing time is preferably 60 to 300 seconds. The particle size of the mixed powder thus obtained is measured, a certain amount of the sample is taken, and the color is confirmed through the color difference meter to complete the process.

The titanium dioxide-coated inorganic pigment mixed powder according to the present invention is characterized in that the CIELAB color system has a lightness (L) of 50 to 60, a * of the X-axis of the chromaticity coordinates is -0.6 to 0.6 and a Y And the axis b * satisfies the color coordinates of -0.6 to 0.6 at the same time. The titanium dioxide-coated inorganic pigment mixed powder according to the present invention is not bluish with the titanium dioxide itself, and has a natural whitening effect.

The titanium dioxide-coated inorganic pigment powder according to the present invention has a natural whitish hue due to the interference effect of light caused by the simultaneous mixing of the red, green, blue and yellow composite powders. The interference effect of light brings an optical whitening effect, and it gives the effect that the skin looks clean and natural visually.

The present invention also provides a cosmetic composition comprising the titanium dioxide-coated mixed powder as an active ingredient. The cosmetic composition may be specifically a cosmetic composition for base make-up.

The composition may contain 5 to 20% by weight of the mixed powder. When the amount is less than 5% by weight, the visual whitening effect is not apparent. On the other hand, if the amount is more than 20% by weight, moldability is deteriorated.

The base makeup cosmetic composition according to the present invention contains a titanium dioxide-coated mixed powder having a natural optical whitening effect, thereby enabling a natural skin cover and a clean white skin expression.

The formulation of the cosmetic composition is not particularly limited and may be appropriately selected according to the purpose. For example, it may be formulated as a makeup primer, a foundation, a makeup base, a two-way cake, a fact, a powder and an eye shadow, but is not limited thereto.

When the formulation of the present invention is a powder or a spray, lactose, talc, silica, aluminum hydroxide, calcium silicate or polyamide powder may be used as a carrier component. In the case of a spray, in particular, / Propane or dimethyl ether.

In the case of the solution or emulsion of the present invention, a solvent, a solvent or an emulsifier is used as a carrier component, and examples thereof include water, ethanol, isopropanol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, propylene glycol, , 3-butyl glycol oil, glycerol aliphatic ester, polyethylene glycol or sorbitan fatty acid esters.

When the formulation of the present invention is a suspension, a carrier such as water, a liquid diluent such as ethanol or propylene glycol, a suspending agent such as ethoxylated isostearyl alcohol, polyoxyethylene sorbitol ester and polyoxyethylene sorbitan ester, Cellulose, aluminum metahydroxide, bentonite, agar or tracant, etc. may be used.

In addition to the titanium dioxide-coated powder mixture powder, the cosmetic composition may further contain ingredients included in the functional additive and the general cosmetic composition. The functional additives may include water-soluble vitamins, oil-soluble vitamins, polymer peptides, polymeric polysaccharides, sphingolipids and seaweed extracts.

The cosmetic composition of the present invention may further contain, in addition to the above-described functional additive, components contained in a general cosmetic composition as required. Examples of the other ingredients that can be included in the composition include humectants, emollients, surfactants, organic and inorganic pigments, organic powders, ultraviolet absorbents, preservatives, bactericides, antioxidants, plant extracts, pH adjusters, alcohols, Accelerators, coolants, antiperspirants, purified water, and the like.

The present invention will be described in more detail through the following examples. However, the examples are for illustrating the present invention, and the scope of the present invention is not limited thereto.

[Example 1] A titanium dioxide-coated mica powder

42 g of the yellow composite powder in the titanium dioxide-coated mica composite powder, 22 g of the red composite powder, 18 g of the green composite powder and 18 g of the blue composite powder were put into a Henschel mixer and mixed at a low speed of less than RPM 500. The mixing time was from 60 seconds to 300 seconds. At this time, the composite powders were red, green, blue and yellow respectively, Flamenco red, Flamenco green, Flamenco blue and Flamenco gold from BASF, Germany.

[Comparative Example 1] A titanium dioxide-coated mica composite powder

As a comparative example, COSMETICA White 9000S manufactured by CGV of Korea was prepared. It is a titanium dioxide-coated mica, a composite powder known to be white.

[Comparative Example 2] Titanium dioxide

As a comparative example, titanium dioxide having a white color was prepared. At this time, titanium dioxide was C47-060 manufactured by Sunchemical Co., USA.

[Formulation Example 1]

In order to examine the visual whitening effect of the powder mixture and the name-containing cosmetic composition according to the present invention, the fact that the powder (Formulation Example 1) containing the powder mixture prepared in Example 1 was produced according to a conventional method with the composition shown in the following Table 1 Respectively. Comparative Formulation Examples 1 and 2 containing Comparative Example 1 (titanium dioxide coated mica composite powder) and Comparative Example 2 (titanium dioxide) were also prepared according to a conventional method with the compositions shown in the following Table 1 for comparison.

Ingredients Formulation Example 1
(weight%) Comparative Formulation Example 1
(weight%) Comparative Formulation Example 2
(weight%) Talc 55.0 55.0 55.0 Example 1 5.0 - - Comparative Example 1 - 5.0 - Comparative Example 2 - - 5.0 Seri Site 20.0 20.0 20.0 Silica 10.0 10.0 10.0 Mineral oil 10.0 10.0 10.0

 [Test Example 1] Color comparison evaluation using a color difference meter

Comparative Example 1, Comparative Example 1, Formulation Example 1, and Comparative Formulation Examples 1 and 2 were subjected to color comparison evaluation. Color comparison evaluation was confirmed by HunterLab's ColorQuest XE. The results are shown in Table 2 below. In Table 2, L denotes brightness, a * denotes the X-axis of the saturation coordinate, and b * denotes the Y-axis of the saturation coordinate.

division L A b Example 1 58.46 -0.08 -0.54 Comparative Example 1 57.06 -1.9 -3.81 Formulation Example 1 36.89 0.1 -4.16 Comparative Formulation Example 1 35.66 0.16 -4.84 Comparative Formulation Example 2 39.96 -0.12 -7.76

As can be seen from Table 2, the measured values of the mixed powders (Example 1) and Comparative Example 1 according to the present invention were as follows. The a and b * values of the X and Y axes of the chromaticity coordinate of Example 1 were white , Whereas in Comparative Example 1 known as white, the a and b * values of the X and Y axes of the chromaticity coordinates are -1.9 and -3.81, respectively, and green and blue light are weak, indicating silver light there was. In the case of Formulation Example 1 in which 5% is applied to the formulation, the a and b * values of the X and Y axes of the chromaticity coordinates are 0.1 and -4.16 at 0, while in Comparative Formulation Example 1 and Comparative Example 2, The a and b * values of the X and Y axes of Comparative Formulation Example 1 were 0.16 and -4.84, and Comparative Formulation Example 2 was -0.12 and -7.76, respectively. In other words, in the case of Comparative Formulation Example 2 in which titanium dioxide used for expressing white is commonly used, the b * value of the Y coordinate of the saturation coordinate is -7.76, Also in the case of Formulation Example 1, the b * value of the Y coordinate of the chromaticity coordinate is 4.85, which is lower than that of the mixed powder developed by the present invention. Therefore, it was confirmed that Formulation Example 1 containing Example 1 according to the present invention naturally exhibited a visual whitening effect.

Therefore, it was confirmed that the mixed powder prepared by mixing powder of red, green, blue and yellow among the titanium dioxide-coated mica composite powder of the present invention can provide a visually natural whitening effect.

[Test Example 2] Sensory evaluation by panel

Sensory evaluation was carried out using Formulation Example 1 and Comparative Formulation Examples 1 and 2 in order to examine the covering power, visual whitening effect and naturalness of the cosmetic composition containing the powder mixture according to the present invention.

Coverage, visual whitening effect, and naturalness persistence comparative evaluation of Formulation Example 1 and Comparative Formulation Examples 1 and 2 were conducted in consumer panel test for 10 days for 20 to 30 year old female consumers for 3 days, Table 3 shows the results.

division Coverage Visual whitening effect Naturalness Formulation Example 1 ○ ◎ ◎ Comparative Formulation Example 1 ○ ○ ○ Comparative Formulation Example 2 ◎ ○ △

※ Evaluation standard

⊚: very excellent ◯: excellent Δ: fair ×: poor ××: very poor

As can be seen from the above Table 3, Formulation 1 to which the mixed powder according to the present invention (Example 1) was applied showed superior natural whitening effect as well as visual whitening effect as compared with Comparative Formulation Examples 1 and 2.

Claims (13)

A composite powder coated with an inorganic pigment-based titanium dioxide, which comprises a mixture of a red composite powder, a green composite powder, a blue composite powder and a yellow composite powder,
Wherein the average particle size of the composite powder is 15 to 40 占 퐉. The method according to claim 1,
Wherein the inorganic pigment is at least one selected from the group consisting of mica, synthetic mica, talc and sericite. The method according to claim 1,
Wherein the inorganic pigment is a mica-titanium dioxide-coated inorganic pigment mixed powder. delete The method according to claim 1,
Wherein the chromaticity of the red composite powder is such that the brightness (L) of the CIELAB color system is 40 to 50, the a * value of the X axis of the chromaticity coordinate is 10 to 15, and the b * value of the Y axis of the chromaticity coordinate is -5 to 0 Wherein the color coordinates of the titanium dioxide-coated inorganic pigment powder are simultaneously satisfied. The method according to claim 1,
The composite powder that exhibits the green color has a lightness (L) of 50 to 60 in a CIELAB colorimetric system using a colorimeter, a * of a chromaticity coordinate of a -13 to -8 and a b * of a chromaticity coordinate of a Y- Wherein the color coordinates of the titanium dioxide-coated inorganic pigment mixture are simultaneously satisfied. The method according to claim 1,
Wherein the chromaticity of the composite powder exhibiting blue is such that the brightness (L) of the CIELAB colorimetric system is 40 to 50, the a * value of the X axis of the chromaticity coordinates is 0 to 5, the b * value of the Y axis of the chromaticity coordinate is -23 to - 18 < / RTI > color coordinates of the titanium dioxide-coated inorganic pigment powder. The method according to claim 1,
The composite powder exhibiting yellow color is obtained by using a colorimeter to determine the lightness (L) of the CIELAB colorimetric system from 60 to 70, the a * of the X-axis of the chromaticity coordinates is -3 to 2, and the b * Wherein the color coordinates of the titanium dioxide-coated inorganic pigment powder are simultaneously satisfied. delete The method according to claim 1,
Wherein the chromaticity of the mixed powder is such that the brightness (L) of the CIELAB colorimetric system is 50 to 60, the a * value of the X axis of the chromaticity coordinates is -0.6 to 0.6, and the b * value of the Y coordinate of the chromaticity coordinate is -0.6 to 0.6 Wherein the titanium dioxide-coated inorganic pigment mixture powder satisfies at the same time. A cosmetic composition comprising the titanium dioxide-coated inorganic pigment mixed powder according to any one of claims 1 to 3, 5 to 8, and 10 as an active ingredient. 12. The method of claim 11,
Wherein the composition contains 5 to 20% by weight of a mixed powder. 12. The method of claim 11,
Wherein the composition is for base makeup.