JPH0920609A - Coated powder of inorganic metallic hydroxide-clay mineral and cosmetic containing the same coated powder blended therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an excellent cosmetic having excellent transparency by blending a coated powder prepared by coating the surface of a clay mineral having a specific grain size, a specified thickness and a specific refractive index with an inorganic metallic hydroxide having a refractive index within a specified range and a thickness within a specific range. SOLUTION: This cosmetic is obtained by blending a coated powder prepared by firmly coating the surface of a clay mineral with an inorganic metallic hydroxide. That is, a coated powder has a coating structure of (A) a composite in which a honeycombed structure is formed on a film formed of ultrafine particles (having 50-250Åaverage particle diameter), (B) a composite formed of an ultrafine particulate film (having 50-250Å average particle diameter), (C) a composite having a structure in which a film is formed of ultrafine particles having 50-250Å average particle diameter and a honeycombed structure is mixed on the film and (D) a composite having a structure in which particles having 0.08-0.8μm average particle diameter are embedded in a coating structure of an inorganic metallic hydroxide film of ultrafine particles having 50-250Åaverage particle diameter as the coating structure. The cosmetic has both correcting effects on shape trouble of the skin and correcting effects on skin color trouble and is good in adhesion to the skin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic composition containing a coated powder in which the surface of a clay mineral is coated with an inorganic metal hydroxide. Furthermore, in more detail, it has an excellent transparency, and it has the effect of correcting the morphology of the skin that makes it difficult to see wrinkles, open pores, and the texture of the skin, and the skin color of skin that makes it difficult to see spots, freckles, acne marks, etc. The present invention relates to a cosmetic composition which has both of a trouble-correcting effect at the same time and is excellent in evenness on the skin.

[0002]

2. Description of the Related Art Heretofore, makeup cosmetics have been of a type containing a high concentration of titanium oxide, which has a high level of concealment in order to hide skin color problems such as skin spots and freckles.
Although this type has the effect of correcting the color tone trouble, the effect of correcting the skin morphology trouble is completely opposite. In general, it seems that it is possible to correct skin color problems and skin morphological problems by hiding the skin. However, in reality, there are overwhelmingly many cases in which morphological troubles are conspicuous rather than finding the effect of correcting morphological troubles on the skin only with hidden payers. Based on these facts, research has been conducted from a viewpoint other than hidden payers in order to have a morphological correction effect.

JP-A-61-69708 proposes a cosmetic in which the surface of an extender pigment of talc, kaolin, mica or sericite is coated with an acrylic resin. Acrylic resin has a bad feel and when blended in an amount of 5% by weight or more, the skin feels uncomfortable (pain).
It is difficult to formulate a concentration that produces a substantial effect. When a dry powder formulation is used at a high concentration, the morphological correction effect appears, but the surface diffusion and scattering of light causes the outline of the face to be blurred and the face to appear large visually. In addition, this kind of composite powder has a defect that stains are noticeable. Furthermore,
It has the drawback that it becomes completely transparent and loses its shape-correcting effect when it is wet with the skin's sebum and water.

Japanese Unexamined Patent Publication No. 7-2619 discloses a feeling of use,
It has been proposed to use Kumada powder, which has excellent moldability and is suitable for cosmetics that can substitute for sericite, which has low gloss. This Kumota powder is very different from the light reflection pattern on the surface of the skin, and does not give a feeling of skin at all, and it is not possible to expect a finish with a skin feeling required for make-up. Furthermore, it has a defect that it becomes transparent due to sebum secreted from the skin and water, and shows a reflection pattern similar to specular reflection, and has unnatural gloss and wrinkles.

Japanese Unexamined Patent Publication (Kokai) No. 59-36160 proposes talc in which the surface of talc is coated with a metal hydroxide. However, the hydrophobicity of the surface of talc particles is improved and it is an extender pigment having good dispersibility. There is also disclosed a talc pigment which is colored and processed in a desired color such as black, red, yellow, blue and orange depending on the type of the water-soluble metal compound used, and which exhibits good dispersibility of the colored pigment. However, it does not disclose the effect of correcting the skin morphology trouble, the effect of correcting the skin color tone trouble, and the uniformity of the skin contact. In addition, as a result of evaluating the effect of correcting the skin morphology trouble and the effect of correcting the skin tone problem with respect to the examples, none of them was recognized as the intended effects.

JP-A-61-56258 discloses a coated talc in which the entire surface of talc particles is uniformly and completely coated with a composition consisting of hydrated metal oxide and / or metal oxide. There has been proposed a talc pigment which is a fired product of coated talc and is colored to a desired color and has excellent dispersibility. However, there is no disclosure regarding the effect of correcting skin morphology troubles, the effect of correcting skin color tone troubles, and the uniformity of contact with the skin. In addition, as a result of evaluating the skin morphological trouble correcting effect and the skin tone correcting effect in the examples, none of these desired effects was recognized.

In recent years, the quality products of sericite have been depleted, and the demand for materials that can substitute for sericite is increasing. In particular, for this purpose, the surface of the mica is rubbed to make it uneven, and the development of a material that suppresses the gloss of the mica has been made. However, the spread of the mica becomes very heavy and the gloss of the mica varies. There is a big defect that the quality is not stable. Furthermore, when the surface of mica gets wet with sebum and water secreted from the skin over time, the shade of grayish brown of mica is emphasized, and the expected make-up effect cannot be obtained. Furthermore, when excessive skin oil or water secreted from the skin covers the surface of fine irregularities, the gloss is emphasized and wrinkles are noticeable.

[0008] Makeup cosmetics are required to have various lusters in order to cope with changes in texture due to cosmetic effects. To this end, clay minerals with high surface smoothness such as mica, sericite, and talc are appropriately combined with silica powder, calcium carbonate, magnesium carbonate, and other non-glossy white extender pigments and spherical particles. By adjusting it, the glossiness of the entire cosmetic is adjusted.

However, when a cosmetic is applied to the skin, the surface of the clay mineral is smooth, and the cosmetic film is liable to be shiny.
On the contrary, morphological problems on the skin were also a prominent cause. In order to solve this problem, it was necessary to adjust the blending amount of the clay mineral having a smooth surface to a small amount. As a result, there was a drawback that clay minerals with a smooth surface could not fully exhibit the excellent properties such as transparency, smooth elongation on the skin, and adhesive force.

The refractive index of the stratum corneum is 1.55, whereas the refractive power of mica, a typical clay mineral used in cosmetics, is 1.59, the refractive index of talc is 1.53, and the refractive index of oil agents applied to cosmetics in general is A value of 1.39 to 1.51 is shown. As you can see from these values,
When ordinary powder is used in cosmetics, when the powder gets wet with oil absorption or more due to the oil that is secreted from the skin due to the very thin make-up film with a similar refractive index, the phenomenon of transparency occurs. There is a drawback that the shiny phenomenon is emphasized by the reflection of the surface of the sebum membrane by the excess sebum and the light reflection from the surface of the clay mineral dispersed in the sebum. In some cases, it looks very tired, which is not preferable.

Porous acrylic beads, titanium oxide-encapsulated porous acrylic beads, porous silica, aerosil, magnesium carbonate, etc. are applied as materials for increasing the oil absorption in order to prevent these shininess, but these are blended. Immediately after makeup, the above-mentioned cosmetics have a drawback that they make the skin strongly dry, dry the skin, and make the skin feel strange.

There is a cosmetic containing fluorinated powder as a material for preventing shininess, but not only the oil repellent effect, which is a characteristic of a fluorine compound, disappears by the usual oil coating method, but it is also secreted from the skin. Water and sebum will be present on the make-up film, and the aging phenomenon will appear due to changes over time. Therefore, there are too many problems to master the materials.

From the viewpoint of forming a more beautiful makeup film and enhancing the makeup effect, a control color is used as a foundation base material. The main colors are green, yellow, purple and orange. The aim of these color tones largely depends on the color tone such as the effect of eliminating the redness of the skin (using the complementary color relationship with the redness of the skin), making the skin color more natural, fair or healthy.
In order to make the spots and freckles on the skin less visible, the cosmetics with the tone of the spots become a dark makeup film, and it is difficult to obtain the desired makeup effect. Green is effective in making the spots on the skin less visible. However, in reality, the control colors are mixed with the foundation, and the color-reducing mixing effect causes the saturation of the color tone of the foundation to be deteriorated, and the original color effect of the foundation is greatly impaired. Furthermore, not only the makeup step becomes complicated, but also it is difficult to control the amount of use, and a very advanced beauty technique is required to obtain the desired makeup effect.

[0014]

Therefore, it has an excellent transparency and has a morphological trouble-correcting effect on the skin that makes it difficult to see wrinkles, open pores, and rough texture of the skin, and it can show spots, freckles, and acne marks. There has been a demand for a cosmetic that has both the skin tone that makes it difficult and the problem-correcting effect at the same time, and that is excellent in the uniformity of contact with the skin.

[0015]

[Means for Solving the Problems] Under such circumstances, the present inventor has conducted diligent research, and as a result,
A strong coating of inorganic metal hydroxide has high transparency, and has both a morphological trouble correction effect and a skin tone trouble correction effect, and a cosmetic with excellent uniformity on the skin is obtained. The present invention has been completed by finding out that it is possible.

That is, the present invention provides a cosmetic composition containing a coating powder obtained by coating the surface of a clay mineral having a specific particle size, thickness and refractive index with a specific range of refractive index and a specific range of thickness. To do.

Clay minerals constituting the present invention include illites such as sericite (sericite), muscovite, biotite, lithia mica, synthetic mica, kaolins such as kaolinite, nacrite, deckite, halloysite, etc. , Sillimanite group such as kyanite, talc (talc), magnesium silicate series such as serpentine. Their average particle size is 0.
2 to 20 μm (average particle size by laser diffraction method, manufactured by Horiba Ltd.), average thickness of these clay minerals is 0.1 to 1.5 μm
m (method of embedding in resin and observing the section by TEM). The refractive index of these clay minerals applied to the present invention is 1.45 to 1.65.

The inorganic metal hydroxide used for coating the clay mineral may be crystalline or amorphous, and is specifically aluminum hydroxide, magnesium hydroxide, calcium hydroxide or the like. The refractive index of these inorganic metal hydroxides is 1.40 to 1.
The range of 60 applies.

The coated powder of the present invention is a composite in which the surface of the clay mineral is coated with an inorganic metal hydroxide. The coating state is different in the manufacturing conditions, the fine surface morphology of the clay mineral, and the surface. Due to the difference in activity, etc., a coating layer or average particle size 5 with a honeycomb-like structure is formed on the film made of ultrafine particles.
A coating layer of 0-250Å ultrafine particles or a mixture of the coating layer and a honeycomb-like structure, and further, a layer of ultrafine particles or a coating layer formed of ultrafine particles with an average particle size of 50-250Å It may have an embedded form with a size of about 0.08 to 0.8 μm. These coating states (coating structures) are completely different from the simple coating of granular particles, spherical particles, acicular particles, and spindle particles.

The average thickness of the inorganic metal hydroxide coating film coating the clay mineral is 0.05 μm to 1.0 μm.

When the average particle size of the clay mineral is 0.2 μm or less, the phase difference scattering becomes large, the transparency is lost, and the whitishness becomes conspicuous, which does not meet the purpose of this material. On the other hand, if the average particle size is 20 μm or more, it is not preferable because a rough feel or discomfort is caused on the skin due to the size of the particles.

When the average thickness of the clay mineral is thinner than 0.1 μm, the transmitted light is too strong, and the internal scattering effect in the coating layer covering the surface of the clay mineral is weak, which is not preferable.
When the average thickness is 1.5 μm or more, the influence on the internal scattering in the coating layer remains unchanged. Furthermore, if the thickness is larger than this, the transparency of the coated powder tends to be reduced, which is not preferable.

In the coated powder, the refractive index of the inorganic metal hydroxide coating the matrix clay mineral is 1.45 to 1.65. If the refractive index is larger than 1.65, the surface reflection of light,
The scattering is strong and the cosmetic film tends to be opaque. When the refractive index is smaller than 1.45, the light transmission becomes larger, the light scattering effect in the coating layer is small, and the phenomenon of shining tends to occur.

Further, when the average thickness of the coated layer is thicker than 1.0 μm, the internal scattering effect of light in the coating layer does not change, and no merit can be expected in economic cost. When the thickness of the coating layer is less than 0.05 μm, the internal scattered light of the light in the coating layer cannot be completely eliminated, which causes a shining phenomenon. In order to eliminate the internal scattered light in the coating layer in the layer, it corresponds to the range of approximately 20 to 70% by weight in terms of the concentration of oxide, although it depends on the size of the average particle size.

The amount (blending amount) of the coated powder used in the cosmetic of the present invention is 1 to 100 in the case of powdery cosmetic.
Wt% (wt% is based on the weight of the composition). Cake-like cosmetics and pastes, in the case of cosmetics, 1 of the total powder weight
１００100% by weight. In the case of emulsion cosmetics, it is 1 to 60% by weight based on the weight composition of the emulsion. Among them, it is particularly suitable for makeup cosmetics, such as foundation, white powder, eye shadow, blusher, cream, emulsion, lotion, nail color, lipstick and the like. The coated powder of the present invention may be treated with silicon, fluorine, lecithin, amino acid, if necessary, before being blended into cosmetics.
Metal soap treatment, surfactant treatment, or a combination of these treatments may be performed.

Next, considering the mechanism of action, one of the known methods for making wrinkles less visible is to immobilize the surface of the substrate with a polymer resin, and the unevenness of the polymer also causes the diffuse reflection effect of light. A method of making wrinkles difficult to see. The other is to approximate the powder to a butterfly shape and use its complicated shape to create a diffuse scattering effect.
It utilizes the light scattering effect on the surface of the material.
The present invention forms a coating layer in which a low-refractive-index inorganic metal hydroxide is adjusted to a specific thickness on the surface of a substrate, and the internal structure of the coating layer is such that incident light exhibits a strong internal scattering effect. Has a honeycomb-like structure formed on an ultrafine particle film that easily disappears, a structure in which an ultrafine particle film and a honeycomb-like structure are mixed, or a structure in which particles of several μm are embedded in an ultrafine particle layer or ultrafine particles. . That is, as the mechanism of light reflection and scattering, the former utilizes diffuse reflection light on the surface of the material, whereas the present invention is based on the effect of internal diffusion and disappearance of light in the coating layer. The first reason that the coated powder of the present invention has an excellent transparency, and has the effect of correcting the skin morphology trouble and the effect of correcting the skin tone problem is the inorganic metal hydroxide having a low refractive index. By forming the coating layer with a specific thickness, the surface reflection of light is suppressed as much as possible while maintaining the transparency of the coating layer. Secondly, it has a special structure in which the incident light is likely to be internally scattered in the layer, and further the light is easily attenuated. Thirdly, since the light scattering direction in the coating layer is at random, the skin surface looks blurred even if the coating layer is transparent. In other words, it is presumed that skin morphological problems and skin tone problems are less visible.

The surface morphology of the skin is formed by fine relief from the first relief to the fifth relief, and the stratum corneum has a low refractive index of 1.55 and is highly transparent. In other words, it is considered that a small part of the light enters the skin tissue and is absorbed in the internal tissue, although there is diffuse reflection of light on the skin surface and part of the reflected light returning from inside the skin composition. To be

When the gloss is measured by an optical angle glossmeter based on this principle, the coated powder of the present invention shows the same optical characteristics as the skin, and it can be said that it is a novel cosmetic material having a skin feel.

In the cosmetic of the present invention, in addition to the coated powder of the present invention, other components usually used in cosmetics can be appropriately blended if necessary. For example, talc, kaolin,
Sericite, muscovite, phlogopite, phlogopite, biotite, synthetic mica, lithia mica, vermiculite, magnesium carbonate, calcium carbonate, diatomaceous earth, magnesium silicate,
Inorganic powders such as calcium silicate, aluminum silicate, barium silicate, barium sulfate, strontium silicate, metal tungstate, silica, hydroxyabatite, zeolite, boron nitride, ceramics powder,
Nylon powder, polyethylene powder, polystyrene powder, benzoguanamine powder, polytetrafluoroethylene powder, distyrenebenzene polymer powder, epoxy powder, acrylic powder, silicone powder, organic powder such as microcrystalline cellulose, titanium oxide, zinc oxide, etc. Inorganic white pigment, iron oxide (red iron oxide),
Inorganic red pigments such as iron titanate, inorganic brown pigments such as γ iron oxide, iron yellow oxide, and ocher

Inorganic yellow pigments, iron tetraoxide, inorganic black pigments such as carbon black, inorganic purple pigments such as mango violet and cobalt violet, inorganic green pigments such as chromium oxide, chromium hydroxide and cobalt titanate, Inorganic blue pigments such as ultramarine blue and dark blue, titanium oxide-coated mica, titanium oxide-coated bismuth oxychloride, bismuth oxychloride, titanium oxide-coated talc, fish scale foil, pearl pigments such as colored titanium oxide-coated mica, aluminum powder, copper powder, etc. Metal powder pigment

Red No. 201, Red No. 202, Red 204
No., Red No. 205, Red No. 220, Red No. 226, Red No. 228, Red No. 405, Orange No. 203, Orange No. 204
No. 205, Yellow No. 205, Yellow No. 401 and Blue No. 404, etc. Organic pigments, Red No. 3, Red No. 104, Red No. 106, Red No. 227, Red No. 230, Red No. 401, Red No. 505
No., Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow 202
No. 203, Yellow No. 203, Orange No. 3 and Blue No. 1 organic pigments such as zirconium, barium or aluminum lake, natural pigments such as chlorophyll and β-carotene

Squalane, fluid paraffin, petrolatum,
Microcrystalline wax, ozokerite, ceresin, myristic acid, palmitic acid, stearic acid, oleic acid, instearic acid, cetyl alcohol, hexadecyl alcohol, eulenic alcohol, cetyl 2-ethylhexanoate, 2-ethylhexyl barmitate, myristic acid 2 -Octyldodecyl, neopentyl glycol di2-ethylhexanoate, glycerol tri-2-ethylhexanoate, 2-octyldosyl oleate, isopropyl myristate, glycerol triisostearate, coconut oil fatty acid glycerol, olive oil, avocado oil, beeswax, Myristyl myristate,
Mink oil, various hydrocarbons such as lanolin, silicone oil,
Higher fatty acids, esters of oils and fats, higher alcohols, oily components such as waxes, acetone, toluene, bral acetate,
Organic solvents such as acetate.

Resins such as alkyd resins and urea resins, camphor, plasticizers such as acetoltributyl citrate, ultraviolet absorbers, antioxidants, preservatives, surfactants, humectants,
Examples include fragrances, water, alcohol, thickeners and the like. The form of the cosmetic according to the present invention is not particularly limited, and examples thereof include powder, cake, pencil, stick, pellet,
It can be in the form of an ointment, a liquid, an emulsion or a cream. The mica powder of the present invention is particularly useful for cosmetics, but it can also be used as an additive for paints, plastics, rubber, etc., a release agent for rubber, etc., and a lubricant.

[0034]

The present invention will be described in more detail with reference to the following examples and reference examples, but the present invention is not limited to these examples. In the examples, the glossiness, wrinkle evaluation, spot blurring effect, and skin uniformity evaluation in the reference examples were measured by the following methods. The mixing ratio in the examples is parts by weight. (Evaluation of gloss with a gonio-gloss meter) 30 against the weight of dry powder
The wet powder wetted with the flow paraffin of weight% was evaluated using a gonio-gloss meter (Nippon Denshoku Industries Co., Ltd. SZ-Σ90 type). Take the sample on the flexion side of the forearm, apply it with a puff, and rub it lightly with your finger 2-3 times.
The measurement was performed by setting the angle to ° and changing the light receiving angle.

(Evaluation of wrinkles) A silicon replica of a portion extending from the deep nose groove to the cheeks was prepared, a sample was placed on the surface, brushed with a brush to apply an amount of 0.4 mg / cm ² , and a photograph was taken. The photograph was evaluated by 25 panelists.

(Blur effect of stains) A sample was castor oil 10
3.5 g was sampled and uniformly mixed, and then adjusted on a slide class using a 28 μm doctor blade. Separately, arrange a round wheat skin pigment with a diameter of 0.5 mm in the same pattern on a skin-colored paper for fair skin. A sample whose thickness was adjusted was placed on the skin-colored paper, and sensory evaluation was performed on the appearance of the white skin-paper and the round wheat skin-paper.

(Uniformity of contact with the skin) From the deep groove of the nose to the cheek, apply with a urethane puff, and apply the surface with a CD
Images were taken with a camera (OVM1000NM type manufactured by Olympus Corporation), and sensory evaluation was carried out by 25 panelists.

[0038]

Example 1 Al ₂ (SO ₄ ) ₃ · in 2,000 ml of purified water
After 400 g of 13-18 H ₂ O was added and dissolved, 200 g of mica (average particle diameter 3.7 μm, particle thickness 0.3 μm) was added, and the mixture was stirred with a homomixer at 8,000 rpm for 5 minutes. To this dispersion was added 457 g of urea and the mixture was treated at 95 ° C for 6 hours and cooled,
After washing with water, wash with ethanol and dry at 70 ° C.
9 g of coated powder was obtained. This is called coated powder (A). , Table 1 shows the results of sensory evaluation, and Fig. 1 shows the results of gloss measurement.
Shown in

[0039]

Example 2 80 g of sericite (average particle size: 4.5 μm, average particle thickness: 0.4 μm) was dispersed in 1,000 ml of purified water by stirring with a homomixer for 15 minutes. Purified water in the dispersion 30
A solution in which 100.9 g of Mgcl ₂ .6H ₂ O was dissolved was added to 0 ml, and the mixture was uniformly mixed and stirred. Add 300 m of purified water to this uniform mixed dispersion.
A solution of 39.7 g of NaOH in 1 is added dropwise to bring the pH to 9.0. After completion of dropping, the mixture was stirred for 1 hour and then filtered, and saturated Mg was added.
After repeating washing with (OH) ₂ solution, washing with ethanol,
After drying, 113.3 g of coated powder was obtained. This is called coated powder (B). The results of sensory evaluation are shown in Table 1, and the results of gloss measurement are shown in FIG.

[0040]

Example 3 Al ₂ (SO ₄ ) ₃ · in 2,500 ml of purified water
13-18 H ₂ O 60 g and POE sorbitan monolaurate 1.5 g were added and dissolved, and then talc (average particle size 6.
Add 40 g of 5 μm average particle thickness 0.9 μm) and stir with a homomixer at 3,000 rpm for 15 minutes. 69 g of urea was added to this dispersion and treated at 93 ° C. for 4 hours, washed with cooling water, washed with methanol and dried at 70 ° C. to obtain 58.4 g of coated powder. This is called coated powder (C). The results of sensory evaluation are shown in Table 1, and the results of gloss measurement are shown in FIGS. 3 and 5.

[0041]

Example 4 In 800 ml of purified water, sericite (average particle size 5.
4 μm, average particle thickness 0.5 μm) 40 g and talc (average particle diameter 7.4 μm, average particle thickness 1.0 μm) 40 g and P
0.8 g of OE sorbitan monolaurate is added to disperse the powder. 53.0g and Mgcl the Alcl ₃ · 6H ₂ O to
The ₂ · 6H _{2 O44.4g} solution uniformly mixing added dissolved in purified water 300 ml. To this solution, add 300 ml of purified water to NaOH.
Add a solution of 41.1 g to adjust the pH to 9.0. pH
When it reached 9.0, stir for 30 minutes, filter, and then saturate Mg.
Repeated washing with (OH) ₂ solution, washing with ethanol and drying to obtain 104.2 g of coated powder. This is coated powder (D)
That. The sensory evaluation results are shown in Table 1, and the gloss measurement results are shown in FIG.
Shown in

[0042]

Example 5 A wet powder was prepared by mixing 30% by weight of liquid paraffin with the coated powder produced in Example 3.
This wet powder was compared in view of the comparison between untreated talc and bare skin and the dry powder coated talc of Example 3. The results are shown in Table 1 and FIG.

Comparative Example 1 (Production of Aluminum Hydroxide) Al in 1.000 ml of purified water was used.
_{2 (SO 4) 3 · 13~18H} 2 O400g to 6 hours at 95 ° C. Put urea 457g After dissolved, cooled, and dried at 70 ° C. and washed with ethanol then washing with water filtered, aluminum hydroxide Obtained. Table 1 shows the evaluation results of the sample in which the mica and aluminum hydroxide used in Example 1 were uniformly mixed in the ratio of 3: 2.

(Comparative Example 2) Table 1 shows the evaluation results of the sample used in Example 2 in which the sericite and the aluminum hydroxide were uniformly mixed at a ratio of 4: 1.

(Comparative Example 3) Table 1 shows the evaluation results of a sample obtained by uniformly mixing talc and aluminum hydroxide used in Example 3 at a ratio of 7: 3.

Comparative Example 4 (Production of Magnesium Hydroxide) A solution prepared by dissolving 100.9 g of Mgcl ₂ .6H ₂ O in 300 ml of purified water was added to 800 ml of purified water and uniformly mixed with stirring. Separately 300 ml
Prepare 39.7g of sodium hydroxide in the purified water of and add dropwise.
Set to H9.0. When the pH reached 9.0, the mixture was stirred for 1 hour, filtered, and washed with saturated magnesium hydroxide three times. Then, it was further treated with ethanol and dried at 60 ° C. overnight to obtain magnesium hydroxide. Sample 4 in which the sericite used in Example 2 and talc used in Example 3 were uniformly mixed in a ratio of 1: 1 was mixed with aluminum hydroxide and magnesium hydroxide in a ratio of 1: 2. Table 1 shows the evaluation results of the samples uniformly mixed at a ratio of 1.

[0047]

Embodiment 6

[Table 4] Charge powder (1) into a Henschel mixer and rotate at low speed to 4
Stir for 1 minute, remove and grind. The crushed product is transferred to a Henschel mixer again, (2) is added, stirred for 10 minutes, taken out, crushed by a parallelizer (manufactured by Hosokawa Micron), passed through a 40-mesh sieve, and filled in a medium dish to obtain a product.

(Comparative Example 6) The procedure of Example 6 was repeated except that siliconized mica and talc were used instead of the coated powder (A) and the coated powder (C). Table 2 shows the results of the sensory evaluation of the powder foundation prepared as described above.

[0049]

Embodiment 7

[Table 5] The powder (1) is mixed with a Henschel mixer at a low speed for 10 minutes, the mixture (2) which is heated and dissolved and mixed is sprayed onto this mixture, and the mixture is further mixed for 10 minutes, and then pulverized with a pulsarizer (manufactured by Hosokawa Micron) and filled in an intermediate dish. And make it a product.

(Comparative Example 7) The procedure of Example 7 was repeated except that untreated talc and sericite were used in place of the coated powder (D). Table 2 shows the sensory evaluation results of the blushers prepared as described above.

[0051]

Embodiment 8

[Table 6] The component (1) was heated and dissolved and mixed at 85 ° C., and then the component (2) was added and uniformly dispersed. The mixture of the component (3) heated and dissolved and mixed at 85 ° C. was gradually added to this and emulsified. The temperature at the time of emulsification was maintained for 13 minutes and stirred, and then cooled to 50 ° C while stirring. The component (4) was added to this, and it cooled to 40 degreeC, the product was taken out, it filled in the container and the emulsion type foundation of this invention was obtained.

(Comparative Example 8) The procedure of Example 8 was repeated except that ordinary mica and sericite were used in place of the coated powder (A) and the coated powder (B). Table 2 shows the results of the sensory evaluation of the emulsion foundation prepared as described above.

[0053]

Embodiment 9

[Table 7] After the component (1) was heated and dissolved and mixed at 85 ° C., the component (2) was added and uniformly dispersed. The mixture of the component (3) heated and dissolved and mixed at 85 ° C. was gradually added to this and emulsified. The temperature at the time of emulsification was maintained for 10 minutes and stirred, and then cooled to 40 ° C. with stirring. The component (4) was added thereto, and the mixture was cooled to 35 ° C., the product was taken out and filled in a container to obtain an emulsion of the present invention.

Comparative Example 9 The procedure of Example 9 was repeated except that ordinary sericite was used in place of the coated powder (B).
Table 2 shows the results of sensory evaluation of the emulsion prepared as described above.

[0055]

Embodiment 10

[Table 8] After heating and mixing the component (1) at 85 ° C, the heating temperature is raised to 100 ° C. Then, the temperature is returned to 85 ° C, and it is confirmed that it is completely heated and melted. Ingredient (2) is added to this and uniformly dispersed with stirring. After that, vacuum defoaming treatment was performed and the component (3) was added, and then the container was filled and then filled to obtain an oily foundation of the present invention.

(Comparative Example 10) Similar to Example 10 except that ordinary talc, mica and sericite were used in place of the coated powder (C), the coated powder (A) and the coated powder (B). went. The results of the oily foundation prepared as described above are shown in Table 2.

[0057]

[Embodiment 11]

[Table 9] Component (1) (however, n-butyl acetate is partly dissolved) is dissolved, and organically modified montmorillonite and the rest of n-butyl acetate are mixed into this solution and added to form a gel. Was added and mixed and filled in a container to obtain a nail enamel of the present invention.

(Comparative Example 11) The procedure of Example 11 was repeated, except that ordinary sericite, mica and kaolin were used in place of the coated powder (B) and the coated powder (D). Table 3 shows the results of the sensory evaluation of the nail enamel prepared as described above.

[Table 3]

[0059]

Industrial Applicability As described above, the coated powder of the present invention has excellent uniformity in contact with the skin and is excellent in transparency, and is excellent in both the morphological trouble correcting effect and the skin tone trouble correcting effect. It has an effect, and has an epoch-making effect as compared with the case of using conventional clay minerals as a base material of cosmetics, and it is extremely important to contribute to this industry.

[0060]

[Table 1]

[0061]

[Table 2]

[Brief description of drawings]

[Fig.1] Comparison with dry powder of car aluminum hydroxide

FIG. 2: Comparison with dry powder of sericite-magnesium hydroxide

Figure 3: Comparison with talc-aluminum hydroxide dry powder

[Fig. 4] Comparison with dry powder of sericite, talc-aluminum hydroxide and magnesium hydroxide

FIG. 5: Comparison with talc-aluminum hydroxide wet powder

Claims (7)

[Claims] 1. A coating powder comprising an inorganic metal hydroxide coated on the surface of a clay mineral and having a coating structure of the following (A), (B), (C) or (D). Cosmetics. (A) A composite body in which a honeycomb-like structure is formed on a film in which the coating structure of the inorganic metal hydroxide coating the surface of the clay mineral is formed of ultrafine particles (average particle size 50 to 250Å). (B) Ultrafine particle film (average particle size 50 to 250Å) with a coating structure of inorganic metal hydroxide coating the surface of clay mineral
The complex formed by. (C) A composite having a film in which a coating structure of an inorganic metal hydroxide coating the surface of a clay mineral is formed of ultrafine particles having an average particle size of 50 to 250Å and a structure in which a honeycomb-like structure is mixed on the film. body. (D) The average particle size covering the surface of the clay mineral is 50
A composite having a structure in which particles having an average particle diameter of 0.08 to 0.8 μm are embedded in a coating structure of an ultrafine inorganic metal hydroxide film having a particle diameter of 250 μm to 250 μm. 2. The cosmetic composition according to claim 1, wherein the average thickness of the inorganic metal hydroxide constituting the coated powder is 0.05 to 1.0 μm. 3. The cosmetic material according to claim 1, wherein the refractive index of the inorganic metal hydroxide constituting the coated powder is 1.40 to 1.60. 4. The cosmetic material according to claim 1, wherein the clay mineral constituting the coated powder has an average thickness of 0.1 to 1.5 μm. 5. The refractive index of the clay mineral constituting the coated powder is
The cosmetic material according to claim 1, which is 1.45 to 1.65. 6. The cosmetic material according to claim 1, wherein the clay mineral constituting the coated powder has an average particle diameter of 0.2 to 20 μm. 7. The compounding amount of the coated powder cosmetic is from 1 to 100.
The cosmetic composition according to claim 1, which is the weight percent.