JPH1160444A - Silica-coating powder containing pigment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject powder which is composed of silica containing pigments and a body powder and has skin texture and color-rendering effect due to blood and melanin in combination. SOLUTION: The powder having at least two layers, of which the upper layer is composed of silica (silicic anhydride) containing pigments (e.g. yellow and the like) preferably in an amount of 0.1-30 wt.% based on the whole weight of the upper layer and the lower layer is composed of a body powder (e.g. mica, sericite, talc, titanium dioxide, zinc oxide, etc.), containing in an amount of 10-90 wt.% based out the whole weight of the lower layer, is obtained. It is preferable that the weight ratio of the upper layer to the lower layer is 3:7 to 9:1. Further, it is preferable that a red pigment is additionally contained in the lower layer of this powder or a red pigment is localized on the section near the upper layer, namely on the surface of the upper section in the lower layer. The upper layer including silica in this powder can contain e.g. cations such as a metal ion and the like, anions such as a halogen ion and the like, powders such as talc and mica, and ultraviolet ray absorbents as optional components in addition to essential components.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a silica-coated powder suitable for cosmetics and a cosmetic containing the same.

[0002]

2. Description of the Related Art The desire to dress beautifully is held not only by women but also by human beings, and various makeup cosmetics have been developed to realize this desire. Among them, a particular emphasis in recent years has been to develop makeup cosmetics that look beautiful and look natural. From such a point of view, attention has been paid to the optical effect of the stratum corneum, and a makeup cosmetic having a translucent layer interposed has been developed and attracted attention. This make-up cosmetic realizes the translucent optical effect of the stratum corneum by compounding a powder having a silica gel coating on multiple layers. However, in makeup cosmetics that require a variety of cosmetic finishes, it is significant to develop powders having such an effect in addition to the multilayer silica-coated powder. In particular, in the stratum corneum, besides the optical effect of being translucent, there is also a color rendering effect caused by blood, melanin, and the like. Therefore, development of a powder raw material having such effects has been desired.

[0003] On the other hand, many attempts have been made to coat various powders with silica and change the surface characteristics thereof, and many products have been developed. However, it has not been attempted to add a pigment to silica. Further, it has not been known at all that coating an extender powder with silica containing such a dye has been known. Further, it has not been known at all that a color rendering effect due to blood or melanin can be obtained by coating the surface of such a constitutional powder with a red pigment. In addition, it has never been known that such powders have skin texture.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object of the present invention is to provide a powder having both skin texture and a color rendering effect caused by blood and melanin. I do.

[0005]

Means for Solving the Problems In view of such circumstances, the present inventors have conducted intensive studies for powders having both skin texture and a color rendering effect caused by blood and melanin.
For example, an upper layer containing silica (silicic anhydride) and a filler powder containing a pigment, such as a powder obtained by coating a filler powder with silica (silicic anhydride), which contains a pigment. The inventors have developed a powder characterized by having at least two lower layers including a body, and have found that this powder has such an effect, thereby completing the invention.
Hereinafter, the present invention will be described in detail focusing on its embodiments.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION

(1) Powder of the Present Invention The powder of the present invention is characterized by containing at least two layers, an upper layer containing silica (silicic anhydride) and a lower layer containing an extender powder, characterized by containing a pigment. . As the pigment that the upper layer in the powder of the present invention can contain together with silica, any pigment can be used without particular limitation, for example, zinc oxide, titanium dioxide, iron oxide, cobalt oxide, zirconium oxide, chromium oxide, Inorganic pigments such as chromium hydroxide, lead oxide, ultramarine, navy blue, and iris foil, Red No. 202, Red 2
No. 20, red No. 104 aluminum lake, red 226
And organic dyes such as No. 4 aluminum lake and the like, among which dyes which are cosmetic raw materials are preferable, and from the viewpoint of color rendering properties, yellow dyes such as yellow iron oxide and yellow No. 4 aluminum lake are particularly preferable. These dyes may contain only one kind or two or more kinds in combination. The preferred content of these dyes in the silica-containing upper layer of the powder of the present invention is:
It is preferably 0.1 to 30% by weight, more preferably 0.5 to 25% by weight, based on the total amount of the upper layer containing silica,
More preferably, it is 1 to 20% by weight. The upper layer containing the silica of the powder of the present invention is an essential component other than the silica and the dye, which are these essential components, as long as it does not impair the effects of the present invention. Can be contained. Examples of such optional components include cations such as metal ions, anions such as halogen ions, powders such as talc and mica, and ultraviolet absorbers. However, silica purity of 70
% Is not preferred.

[0007] The lower layer of the powder of the present invention is characterized by containing an extender powder. Here, as the constitutional powder, mica, sericite, talc, titanium mica, titanium sericite, titanium dioxide, zinc oxide, silicic anhydride, zirconium oxide, aluminum oxide, barium sulfate, iron oxide and two or more kinds selected from them One or two or more selected from the sintered bodies of the above are preferable, and the amount of the lower layer of the extender powder is preferably 10 to 90% by weight. Here, the form of the sintered body may be an ordinary sintered body, a doped body in which a different compound or an atom is embedded in a crystal lattice, or a composite form thereof. The lower layer containing these constitutional powders is a sintered body obtained by sintering these constitutional powders,
It may be a complex bonded to mechanochemicals. It is preferable that the lower layer of the powder of the present invention further has a red dye on the portion near the upper layer, that is, on the upper surface of the lower layer. The red pigment may be present in the body powder, but since the red pigment present inside the body powder does not contribute to the color rendering effect, it is preferably localized on the surface portion. Preferred examples of the red dye include inorganic red dyes such as red iron and organic red dyes such as red 226, red 202 and red 106, and lakes thereof, and the like. One or two or more selected from the following are preferable, and it is particularly preferable to include an organic red dye therein. The amount of the red pigment is 10 to 90 with respect to the total amount of the lower layer of the powder of the present invention.
% By weight is preferred. By containing the red pigment in the upper portion of the lower layer in this manner, a color rendering effect due to blood can be exhibited. By using an organic red dye as the red dye, a color rendering effect closer to blood can be exhibited.

[0008] The powder of the present invention can be produced, for example, by depositing silica on the surface of a lower layer that has been produced in advance in accordance with a usual silica production method. That is, using an aqueous carrier and / or a lower alcohol as a solvent, a silicate such as sodium silicate and a pigment are solubilized or dispersed, a lower layer prepared in advance is added thereto, and then an acid is immediately added thereto.
Silica gel is produced, taken out, washed, and then removed by heating at about 100 ° C. to easily obtain the silica gel.
It is also possible to manufacture the lower layer that has been manufactured in advance by mechanochemically coating silica and a dye with a planetary ball mill or the like. The average particle size of the powder of the present invention is preferably 0.01 to 20 μm, and 0.05 to 15 μm.
m is more preferred, and 0.1 to 10 μm is even more preferred.

(2) Powder composition of the present invention The cosmetic of the present invention has at least two layers of an upper layer containing silica (silicic anhydride) containing the above-mentioned pigment of the present invention and a lower layer containing extender powder. It is characterized by containing a powder characterized by the following. As the powder composition of the present invention, for example,
Cosmetics such as foundation, under makeup, pressed powder and loose powder, and paints such as paints can be preferably exemplified. Of these, it is most preferable to apply it to cosmetics due to its characteristics. Furthermore, it is particularly preferable to apply to makeup cosmetics among cosmetics. The preferred content of these silicas in the composition of the present invention is 1 to 50% by weight, more preferably 3 to 50% by weight.
To 45% by weight, more preferably 5 to 40% by weight. This is because if the content is too small, the effect of the powder of the present invention may not be sufficient. The composition of the present invention may contain, in addition to the powder of the present invention, which is an essential component, optional components usually used in such a composition. As such optional components, for example, in the case of cosmetics, hydrocarbons such as petrolatum and microcrystalline wax, esters such as jojoba oil and gay wax, tallow, triglycerides such as olive oil, cetanol,
Higher alcohols such as oleyl alcohol, fatty acids such as stearic acid and oleic acid, polyhydric alcohols such as glycerin and 1,3-butanediol, nonionic surfactants, anionic surfactants, cationic surfactants and amphoteric interfaces Activators, ethanol, thickeners such as carbopol, preservatives, ultraviolet absorbers, antioxidants, pigments, powders and the like can be exemplified, if a coating, a dispersing aid, a film forming agent, an adhesive, Examples include plasticizers, pigments, dyes, powders, radical absorbers, antioxidants, and the like. From these optional components and essential components, the composition of the present invention can be produced according to a usual production process. For example, these components may be kneaded in a kneader and rolled to make them uniform, or the powder may be dispersed in a liquid component in advance by a ball mill or the like, and then the raw material for the dust may be added and diluted. The composition of the present invention thus obtained can provide a decoration having the texture of the skin on the application surface, and at the same time, can provide a color rendering effect due to blood or melanin, that is, a decoration having spectral characteristics similar to human skin. .

[0010]

The present invention will be described in more detail with reference to the following examples. The present invention is, of course, not limited to these examples.

Example 1 60 g of titanium sericite was added to 200 g of water glass having a diatom ratio of 2 diluted with water so as to have a specific gravity of 1.2, and 14 g of yellow iron oxide was further added thereto. While dispersing, an excessive amount of a 4N acetic acid aqueous solution was added thereto at a stretch to form a gel. After the gel was thoroughly washed with water, water was extracted with ethanol using a Soxhlet extractor, sufficient alcohol was added to the gel, and the gel was heated at 120 ° C. to obtain a fume containing 9.7% by weight of yellow iron oxide. 198 g of the powder 1 of the present invention having an upper layer of silica gel and a lower layer of titanium sericite was obtained. This was found to have an upper layer: lower layer = 7: 3. This was classified to obtain 163 g (powder 1 ′ of the present invention) having a particle size of 2 μm or less.

Example 2 60 g of titanium mica was added to 200 g of water glass having a diatomaceous ratio of 2 diluted with water so as to have a specific gravity of 1.2, and 14 g of yellow iron oxide was further added and uniformly dispersed. While stirring, an excess amount of a 4N acetic acid aqueous solution was added at once to form a gel. After the gel was thoroughly washed with water, water was extracted with ethanol using a Soxhlet extractor.
Heating at 20 ° C. yielded 192 g of powder 2 of the present invention having an upper layer of fumed silica gel containing 9.0% by weight of yellow iron oxide and a lower layer of titanium mica. It was found that the upper layer: lower layer = 13: 6. This was classified to obtain 151 g (powder 2 ′ of the present invention) having a particle size of 2 μm or less.

Example 3 60 g of titanium dioxide was added to 200 g of water glass having a diatom ratio of 2 diluted with water so as to have a specific gravity of 1.2, and 14 g of yellow iron oxide was further added and dispersed uniformly. While stirring, an excess amount of a 4N acetic acid aqueous solution was added at once to form a gel. After the gel was thoroughly washed with water, water was extracted with ethanol using a Soxhlet extractor.
Heating at 20 ° C. yielded 195 g of powder 3 of the present invention having an upper layer of fumed silica gel containing 9.4% by weight of yellow iron oxide and a lower layer of titanium dioxide. This was found to have an upper layer: lower layer = 9: 4. Classify this thing,
146 g having a particle size of 2 μm or less (powder 3 ′ of the present invention)
Obtained.

Example 4 5 parts by weight of red iron oxide, 1 part by weight of zirconia and 94 parts by weight of titanium dioxide were added at 1000 ° C. for 1 part.
Firing was performed to produce iron / zirconium-doped titanium dioxide. 60 g of this iron / zirconium-doped titanium dioxide
Was added to 200 g of water glass having a diatom ratio of 2 and diluted with water so as to have a specific gravity of 1.2, and 14 g of yellow iron oxide was further added thereto and uniformly dispersed.
Acetic acid aqueous solution was added at once to form a gel. After the gel was thoroughly washed with water, water was extracted with ethanol using a Soxhlet extractor. Further, sufficient alcohol was added to the gel, and the gel was heated at 120 ° C. to obtain a fume containing 9.3% by weight of yellow iron oxide. 193 g of powder 4 of the present invention having an upper layer of silica gel and a lower layer of titanium dioxide were obtained. It was found that the upper layer: lower layer = 13: 6. This was classified to obtain 161 g (powder 4 ′ of the present invention) having a particle size of 2 μm or less.

<Example 5> 50 parts by weight of titanium sericite and 10 parts by weight of Red No. 226 were mixed with a planetary ball mill using a ball mill.
After treating for 4 hours, red No. 226 coated titanium sericite was obtained. 60 g of this red No. 226 coated titanium sericite was added to 200 g of water glass having a diatom ratio of 2 diluted with water to a specific gravity of 1.2.
While uniformly dispersing 4 g of yellow iron oxide, an excessive amount of a 4N acetic acid aqueous solution was added thereto at a stretch to form a gel. After the gel was thoroughly washed with water, water was extracted with ethanol using a Soxhlet extractor, sufficient alcohol was added to the gel, and the gel was heated at 120 ° C. to obtain a fume containing 9.7% by weight of yellow iron oxide. About 1 layer of silica gel
191 g of a powder 5 according to the invention with 6% red 226 coated titanium sericite underlayer were obtained.
It was found that the upper layer: lower layer = 13: 6. This was classified, and those having a particle size of
g (powder 5 'of the present invention) was obtained.

Example 6 50 parts by weight of titanium sericite and 10 parts by weight of Red No. 202 were mixed with a planetary ball mill using a planetary ball mill.
The mixture was treated for 4 hours to obtain Red No. 202 coated titanium sericite. 60 g of this red No. 202 coated titanium sericite was added to a solution obtained by diluting 200 g of water glass having a diatom ratio of 2 with water to a specific gravity of 1.2.
While uniformly dispersing 4 g of yellow iron oxide, an excessive amount of a 4N acetic acid aqueous solution was added thereto at a stretch to form a gel. After the gel was thoroughly washed with water, water was extracted with ethanol using a Soxhlet extractor, a sufficient amount of alcohol was added to the gel, and the gel was heated at 120 ° C. to obtain a fume containing 9.5% by weight of yellow iron oxide. About 1 layer of silica gel
189 g of a powder 6 according to the invention with 5% red No. 202 coated titanium sericite underlayer were obtained.
It was found that the ratio of upper layer: lower layer = 27: 13. This was classified, and those having a particle size of 2 μm or less
g (powder 6 'of the present invention) was obtained.

<Example 7> 50 parts by weight of titanium sericite and 10 parts by weight of Red No. 106 were mixed with a planetary ball mill using a ball mill.
The mixture was treated for 4 hours to obtain Red No. 106 coated titanium sericite. 60 g of this red No. 106 coated titanium sericite was added to 200 g of water glass having a diatom ratio of 2 diluted with water to a specific gravity of 1.2.
While uniformly dispersing 4 g of yellow iron oxide, an excessive amount of a 4N acetic acid aqueous solution was added thereto at a stretch to form a gel. After the gel was thoroughly washed with water, water was extracted with ethanol using a Soxhlet extractor. Further, sufficient alcohol was added to the gel, and the gel was heated at 120 ° C. to obtain a fume containing 9.4% by weight of yellow iron oxide. About 1 layer of silica gel
181 g of a powder 7 according to the invention with 6% red No. 106 coated titanium sericite underlayer were obtained.
This was found to have an upper layer: lower layer = 28: 15. This was classified, and those having a particle size of 2 μm or less were 145.
g (powder 7 'of the present invention) was obtained.

<Example 8> 50 parts by weight of titanium sericite, 8 parts by weight of Red No. 106 and 2 parts by weight of bengara were treated in a planetary ball mill for 24 hours to obtain Red No. 106 / bengala-coated titanium sericite. Was. This red one
No. 06-coated titanium sericite (60 g) was added to water glass (200 g) having a diatom ratio of 2 diluted with water so as to have a specific gravity of 1.2, and 14 g of yellow iron oxide was further added and dispersed uniformly. An excess amount of a 4N acetic acid aqueous solution was added at once to form a gel. After thoroughly washing the gel with water, water was extracted with ethanol using a Soxhlet extractor, and a sufficient amount of alcohol was added to the gel.
C. and a top layer of fumed silica gel containing 9.6% by weight of yellow iron oxide, about 12% of Red No. 106 and about 5%
194 g of a powder 8 of the present invention having a lower layer of titanium sericite coated with red iron oxide was obtained. It was found that the ratio of upper layer: lower layer = 28: 13. This was classified to obtain 124 g (powder 8 ′ of the present invention) having a particle size of 2 μm or less.

<Examples 9 to 12> According to the following formulation,
Got a foundation. That is, the prescription component A was mixed with a Henschel mixer, pulverized with a pulverizer equipped with a 0.7 mm round hole screen, and coated with B while stirring with a Henschel mixer. This was pulverized by a pulverizer equipped with a 1 mm herringbone screen, packed in a gold plate, and pressed to obtain a foundation.

[0020]

[Table 1]

Example 13 Using the foundations of Examples 9 to 12, a comparative test was conducted on the skin texture and the color rendering effect due to blood and melanin. Ten professional panelists use each of them. Regarding the texture of the skin, ++: Covering power is as if it is bare skin, +: Bare skin-like despite having covering power, ±: Covering power Slightly no bare skin feeling-: Evaluation was made based on the criteria that there is cover power but no bare skin feeling. The color rendition was evaluated on the basis of ++: very natural and healthy, +: natural and healthy, ±: slightly natural and not considered healthy,-: not considered healthy. I got it. As a control, powder obtained by replacing the powder 1 of the foundation of Example 9 with 1.4% by weight of yellow iron oxide, 12.6% by weight of silica gel and 6% by weight of titanium sericite was used. As a comparative product, a powder obtained by replacing Powder 1 of Example 9 with a mixture of 14% by weight of silica containing 9.6% by weight of yellow iron oxide and 6% by weight of titanium sericite was used. Table 2 shows the results. From this, it can be seen that the foundation of the present invention is excellent in skin texture and color rendition, and particularly improved in color rendition. Further, as the powder of the present invention, those classified to 2 μm or less are more preferable than those not classified. Therefore, the preferable average particle diameter is 0.01 to 20 μm,
It turns out that 5-15 micrometers is more preferable, and 0.1-10 micrometers is more preferable. Further, the preferable content of the dye in the upper layer containing silica is 0.1 to 3 with respect to the total amount of the upper layer.
It is also found that 0% by weight is preferable, more preferably 0.5 to 25% by weight, and still more preferably 1 to 20% by weight.

[0022]

[Table 2]

<Examples 14 to 17> A foundation was obtained according to the following formulation. That is, the prescription component A was mixed with a Henschel mixer, pulverized with a pulverizer equipped with a 0.7 mm round hole screen, and coated with B while stirring with a Henschel mixer. This was pulverized by a pulverizer equipped with a 1 mm herringbone screen, packed in a gold plate, and pressed to obtain a foundation. These bare skin feelings were determined on the basis of the foundation of Example 9 as a control based on the following criteria: ：: improved, Δ: unchanged, ×: reduced. Table 3 also shows the results.
From these results, it can be seen that the upper part of the lower layer coated with a red pigment is more excellent in color rendering properties for reproducing the color and texture appearing on the skin due to melanin and blood. These had spectral curves very similar to human skin.

[0024]

[Table 3]

Example 18 A finish powder (white powder for finishing) was obtained according to the following formulation. That is, the prescription component A was mixed with a Henschel mixer, pulverized with a pulverizer equipped with a 0.7 mm round hole screen, and coated with B while stirring with a Henschel mixer. This was pulverized with a pulverizer equipped with a 1 mm herringbone screen, packed in a gold plate, and pressed to obtain a finish powder. By applying this white powder on a normal foundation, skin texture and color rendering can be improved. B Powder 130 parts by weight Powder 4 10 parts by weight Powder 72 parts by weight Sericite 20 parts by weight Talc 30 parts by weight Radimethicone 8 parts by weight

Example 19 A spray paint was prepared according to the following formulation. That is, the ingredients were mixed and dispersed well, packed in an aerosol can, filled with LPG gas, and sealed to obtain a spray paint. The application surface of this thing has a skin feeling,
It was beautiful. Powder 5 10 parts by weight Powder 6 5 parts by weight Powder 71 1 part by weight Powder 119 part by weight Atomized silica gel 65 parts by weight Alkyl acrylate polymer 10 parts by weight

[0027]

According to the present invention, it is possible to provide a powder having both skin texture and a color rendering effect due to blood and melanin.

Claims (11)

[Claims] 1. A powder comprising at least two layers, an upper layer containing silica (silicic anhydride) and a lower layer containing an extender powder, wherein the powder contains a pigment. 2. The content of the pigment is 0.1 to 30% by weight based on the total amount of the silica-containing upper layer.
Powder. 3. The powder according to claim 1, wherein the pigment is yellow. 4. The constitutional powder in the lower layer is mica, sericite, talc, titanium mica, titanium sericite, titanium dioxide, zinc oxide, silicic anhydride, zirconium oxide,
One or more selected from aluminum oxide, barium sulfate, iron oxide and two or more sintered bodies selected from them.
The powder according to any one of claims 1 to 3, which is at least a seed. 5. The powder according to claim 1, wherein the lower layer containing the extender powder further contains a red pigment. 6. The powder according to claim 5, wherein the red pigment is localized on a surface near the upper layer of the extender powder. 7. The powder according to claim 1, wherein the weight ratio of the upper layer containing silica containing the pigment to the lower layer containing the extender powder is 3: 7 to 9: 1. body. A powder composition containing the powder according to any one of claims 1 to 7. 9. The powder composition according to claim 8, which is a cosmetic. 10. The cosmetic according to claim 9, which is a make-up cosmetic. 11. The cosmetic according to claim 9, wherein the cosmetic has a natural and healthy skin feeling as a cosmetic finish.