JPH072619A - Mica powder and cosmetic blending the same therein - Google Patents

Abstract

PURPOSE:To obtain mica powder excellent in feeling of use and forming properties and replaceable by sericite having hardly any gloss. CONSTITUTION:The mica powder is characterized in that mica is dolomite, phlogopite, biotite or synthetic mica and average particle diameter (A) by laser diffraction method is in the range of the formula 5mum<=A<=20mum and the thickness index (A/B) expressed by a ratio of the above diameter (A) to average particle diameter (B) by sedimentation method is in the range of the formula 1.5<=A/B<=3.5.

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY The present invention has excellent moldability and low gloss, and therefore is extremely excellent as a base material for cosmetics. Mica powder is excellent in usability and finish mixed with the mica powder. Cosmetics.

[0002]

2. Description of the Related Art Various extender pigments are used in cosmetics for the purpose of improving the extensibility, adhesion, hiding power and moldability of products. Examples of such extender pigments include inorganic powders such as talc, kaolin, sericite and mica, and organic powders such as nylon powder, polyethylene powder, acrylic resin powder and epoxy resin powder. Among them, mica has excellent transparency and gloss,
It is often used because of its excellent feel and extensibility. Recently, not only natural mica but also synthetic mica has been developed. Synthetic mica for cosmetics is disclosed, for example, in JP-A-63-183962 and JP-A-63-183962.
No. 185810 and JP-A-63-241072.

As described above, mica has excellent properties as a base material for cosmetics, but has the drawbacks of high gloss and poor moldability. Therefore, when blended in cosmetics, the gloss of the cosmetics was too high, wrinkles were noticeable, the finish was not beautiful, and the impact resistance was poor. On the other hand, sericite, which is one type of natural mica, is widely used as a base material for cosmetics because it has excellent moldability, low gloss, and excellent feeling in use. However, in recent years, the quality products of sericite have been depleted, and the demand for materials that can substitute for sericite is increasing, but it is possible to substitute sericite with excellent feel and moldability and low gloss. Mica powder is not yet known.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and is suitable for cosmetics which can be replaced with sericite which is excellent in touch and moldability and has low gloss. The purpose is to provide a powder.

[0005]

In order to achieve the above object, the inventors of the present invention have earnestly studied, and as a result, the average particle diameters (A) and (A) of the laser diffraction method and the average particle diameter (B) of the precipitation method were determined. By setting the thickness index (A / B) indicated by the ratio within a specific range, it is possible to obtain a mica powder for cosmetics that can be used as a substitute for sericite, which has excellent feel and moldability and low gloss. The present invention has been reached by discovering such facts.

That is, the present invention is muscovite, phlogopite, biotite or synthetic mica and has a laser diffraction average particle size (A) of
5 μm ≦ A ≦ 20 μm, and the thickness index (A / B) indicated by the ratio of the above (A) and the average particle diameter by the sedimentation method (B) is
1.5 ≦ A / B ≦ 3.5, more preferably 2.0 ≦ A / B
A mica powder and a cosmetic containing the mica powder, wherein ≦ 3.0.

The mica of the present invention is muscovite, phlogopite, biotite or synthetic mica. Since the synthetic mica does not contain a coloring element such as iron, the synthetic mica of the present invention with high whiteness can be obtained. , The moldability, gloss and feel of use are all significantly improved, which is particularly preferable. In the case of muscovite, phlogopite or biotite, the moldability and gloss are considerably improved, but the feel is only slightly improved. Synthetic mica is a ferrosilicate mineral obtained by a melting method, a hydrothermal method, or an inter-solid reaction method, and a high quality crystalline synthetic mica powder contains potassium, sodium, magnesium, aluminum, silicon, fluorine, etc. The compound is obtained by mixing the compounds at a constant ratio, melting, crystallizing, cooling and mechanically pulverizing the mixture. Examples of typical synthetic mica include the following. KMg ₃ (AlSi ₃ O ₁₀ ) F ₂ Potassium Fluoro phlogopite KMg _2.5 (Si ₄ O ₁₀ ) F ₂ Potassium 4-silicon mica NaMg ₃ (AlSi ₃ O ₁₀ ) F ₂ Sodium Fluoro phlogopite

Average particle size of the mica of the present invention by the laser diffraction method
(A) needs to be 5 μm ≦ A ≦ 20 μm, and 5 μm
If it is less than m, the feeling of use is bad, and if it exceeds 20 μm, the moldability is poor and the gloss is strong, so that the effect of the present invention is not exhibited. Further, the mica of the present invention has a thickness index (A /
B) must be 1.5 ≦ A / B ≦ 3.5,
When it is less than 1.5, the feeling of use is poor, and when it exceeds 3.5, the moldability is poor and the gloss is strong, so that the effect of the present invention is not exhibited.

Next, a method for producing the mica powder of the present invention will be described. The raw mica is muscovite, phlogopite, biotite or synthetic mica. The synthetic mica may be produced by a known method. For example, in the case of synthetic fluorine phlogopite, the silicic acid anhydride is about 40
Part, anhydrous magnesium about 30 parts, aluminum oxide about 1
After blending 3 parts and about 17 parts potassium silicofluoride, 1
Melt at 400 ° C-1500 ° C, then 1300 ° C-1
Crystallization is performed at 400 ° C. to obtain synthetic fluorophlogopite. These raw materials mica were sequentially subjected to a coarse crusher, a medium crusher, and a fine crusher, and then the laser diffraction average particle diameter (A) was 5 μm ≦ A ≦
20 μm, and (A) and the average particle size by precipitation method (B)
The thickness index (A / B) indicated by the ratio is 1.5 ≦ A / B
The mica powder of the present invention is obtained by classification so that ≦ 3.5.

As the coarse crusher and the medium crusher, a compression crusher,
A shearing crusher, an impact crusher, a roll type, a stamp type crusher, a medium crusher, etc. can be used, but not limited to these. As the fine pulverizer, a ball medium mill, a medium agitating medium mill, a jet pulverizer, a wet high-speed rotary mill, a stone mill type mill, etc. can be used, but not particularly limited thereto.
The classification method may be a natural sedimentation method, a centrifugal sedimentation method, a cyclone method, or the like. Acid treatment after or before classification,
A heat treatment or a combined treatment of an acid treatment and a heat treatment may be performed. Synthetic mica can be thinned at the end faces of particles by acid treatment, and can be reduced in surface activity by heat treatment without elution of fluorine ions.

The acid used in the above acid treatment may be either an inorganic acid or an organic acid. However, when a strong acid is used, the structure of mica may be destroyed. Is preferably used. Examples of the inorganic acid include hydrochloric acid, nitric acid, sulfuric acid, chloric acid, perchloric acid, periodic acid, bromic acid, phosphoric acid, boric acid, carbonic acid and the like. Examples of organic acids include formic acid, acetic acid, acrylic acid, benzoic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, phthalic acid, and other carboxylic acids, lactic acid, malic acid, tartaric acid, and citric acid. Oxycarboxylic acids such as acids, glycine, alanine, valine, leucine, tyrosine, threonine, serine, proline, tryptophan, methionine,
Examples thereof include amino acids such as cystine, thyroxine, aspartic acid, glutamic acid, lysine and algin.

As a facility system for heat-treating the mica, for example, any known method such as an external heating furnace, an internal heating furnace, a rotary kiln can be applied. The heat treatment atmosphere is
Any of an oxidizing atmosphere, a reducing atmosphere, an argon gas atmosphere, a nitrogen gas atmosphere, an ammonia gas atmosphere, a vacuum, etc., or a combination thereof may be selected as appropriate according to the intended use and function of the mica powder. Good. The heat treatment temperature of mica is 600 to 1350 ° C., preferably 70.
It is 0-1200 degreeC.

The content of the mica powder of the present invention in cosmetics is
It is 1 to 100% by weight in the total amount of the cosmetic. The cosmetics of the present invention include a wide range of cosmetics such as facial cosmetics, makeup cosmetics, hair cosmetics and bath agents, but especially makeup cosmetics such as foundation, white powder, eye shadow, blusher, Makeup base,
It is suitable for nail enamel, eyeliner, mascara, lipstick, fanci powder and the like. The mica powder of the present invention is
After being treated with silicone, fluorine, metal soap, fatty acid, surfactant, or with acid, alkali, or inorganic acid, or a combination of these treatments, if necessary before being incorporated into cosmetics. You may mix.

In the cosmetic of the present invention, in addition to the synthetic mica 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, calcium silicate, aluminum silicate, Inorganic powder such as barium silicate, barium sulfate, strontium silicate, tungstic acid metal salt, silica, hydroxyapatite, 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 powders such as microcrystalline cellulose, inorganic white pigments such as titanium oxide and zinc oxide, iron oxide (red iron oxide), inorganic red pigments such as iron titanate, inorganic brown pigments such as γ iron oxide, Such as iron citrate and loess

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 navy 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. Metallic powder pigment, Red No. 201, Red 20
No. 2, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 228, Red No. 405, Orange No. 203
No. 204, Orange No. 204, Yellow No. 205, Yellow No. 401, Blue No. 404 and other organic pigments, Red No. 3, Red No. 104, Red No. 106, Red

Color 227, red 230, red 401
No., Red No. 505, Orange No. 205, Yellow No. 4, Yellow 5
No., Yellow No. 202, Yellow No. 203, Orange No. 3 and Blue No. 1
, Organic pigments such as zirconium, barium or aluminum lake, natural pigments such as chlorophyll, β-carotene, squalane, liquid paraffin, petrolatum, microcrystalline wax, ozokerite, ceresin,
Myristic acid, palmitic acid, stearic acid, oleic acid, isostearic acid, cetyl alcohol, hexadecyl alcohol, oleyl alcohol, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, 2-octyldodecyl myristate, di-2-ethylhexanoate neo Pentyl glycol, glycerol tri-2-ethylhexanoate, 2-octyldodecyl oleate, isopropyl myristate, glycerol triisostearate, tricoconut oil fatty acid glycerol, olive oil, avocado oil, beeswax, myristyl myristate, mink oil, lanolin, etc. Various hydrocarbons, silicone oils, higher fatty acids, esters of oils and fats, oily components such as higher alcohols and waxes, organic solvents such as acetone, toluene, butyl acetate and acetic acid esters , Al

Resins such as kid resin and urea resin, plasticizers such as camphor and acetoltributyl citrate, ultraviolet absorbers, antioxidants, preservatives, surfactants, humectants, fragrances, water, alcohols, thickeners Agents and the like. The form of the cosmetic according to the present invention is not particularly limited, and for example, powder form,
It can be cake-shaped, pencil-shaped, stick-shaped, pellet-shaped, ointment-shaped, liquid, emulsion, cream-shaped and the like.
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 and the like, a release agent for rubber and the like, and a lubricant.

[0018]

The present invention will be further described with reference to Examples and Reference Examples, but the present invention is not limited to these Examples. The measured values of the average particle diameter by laser diffraction method, the average particle diameter by sedimentation method, moldability, and gloss in Examples and Reference Examples are measured by the following methods. (Laser Diffraction Method Average Particle Diameter) The laser diffraction method average particle diameter is a volume-based median diameter, a particle diameter corresponding to 50% of cumulative distribution, and is a laser diffraction type particle size distribution measuring device (manufactured by Horiba Ltd., model LA- 500).

(Average particle diameter of sedimentation method) The average particle diameter of sedimentation method is a volume-based median diameter, a particle diameter corresponding to 50% of cumulative distribution, and is an ultracentrifugal automatic particle size distribution measuring apparatus (manufactured by Horiba, Ltd., model CAPA-700). (Moldability) 30 parts of talc, 9 parts of fluid paraffin, and 1 part of surfactant were mixed with 60 parts of mica powder. This is 8
Press molding was carried out at a pressure of 0 kg / cm ² , and the surface hardness was measured with an Olsen hardness meter (penetration hardness). The evaluation was performed according to the following criteria. ◎ Less than 40 ○ 40 or more and less than 50 × 50 or more (Gloss) Digital adhesive gloss meter VG-2P made by Nippon Denshoku Co., Ltd. by applying powder to the adhesive surface of cellophane tape attached to art paper.
The 60 ° -60 ° gloss was measured with a mold. The evaluation was performed according to the following criteria. − × less than 3.0 − ○ 3.0 to less than 3.5 ◎ 3.5 to less than 4.5 + ○ 4.5 to less than 5.0 + × 5.0 or more

Example 1 About 40 parts of silicic acid anhydride, about 30 parts of magnesium oxide, about 13 parts of aluminum oxide and about 17 parts of potassium silicofluoride were blended, melted at 1400 ° C-1500 ° C, and then 1300 ° C-1400 ° C. Crystallization was performed at ° C to obtain synthetic fluorophlogopite. 10 kg of this synthetic fluorophlogopite was pulverized with a wet medium mill, then acid-treated with 0.2 M citric acid for 1 hour, and heat-treated at 900 ° C. for 1 hour in a muffle furnace. Then, the particles were classified by a natural sedimentation method, a laser diffraction method average particle diameter (A) of 10.9 μm, and a sedimentation method average particle diameter (B) of 4.
900 g of the mica powder of the present invention having a thickness of 0 μm and a thickness index (A / B) of 2.7 was obtained. The evaluation results are shown in Table 1 below.

Example 2 About 40 parts of silicic acid anhydride, about 30 parts of magnesium oxide, about 13 parts of aluminum oxide and about 17 parts of potassium silicofluoride were blended, melted at 1400 ° C-1500 ° C, and then 1300 ° C-1400 ° C. Crystallization was performed at ° C to obtain synthetic fluorophlogopite. 10 kg of this synthetic fluorophlogopite was crushed with a wet high-speed rotary mill, and then 30% with 0.3 M citric acid.
It was acid-treated for a minute and heat-treated at 900 ° C. for 1 hour in a muffle furnace. Then, the mica powder of the present invention is classified by a natural sedimentation method and has a laser diffraction average particle diameter (A) of 11.5 μm, a sedimentation average particle diameter (B) of 4.3 μm and a thickness index (A / B) of 2.7. 950 g of body were obtained. The evaluation results are shown in Table 1 below.

Example 3 About 40 parts of silicic acid anhydride, about 30 parts of magnesium oxide, about 13 parts of aluminum oxide and about 17 parts of potassium silicofluoride were blended, melted at 1400 ° C-1500 ° C, and then 1300 ° C-1400 ° C. Crystallization was performed at ° C to obtain synthetic fluorophlogopite. 10 kg of this synthetic fluorine phlogopite was crushed with a wet medium mill and then acid-treated with 1N hydrochloric acid for 1 hour,
It heat-processed at 900 degreeC for 1 hour in a muffle furnace. Then, classification was carried out by a natural sedimentation method, and a laser diffraction method average particle diameter (A) of 20.0 μm and a sedimentation method average particle diameter (B) of 5.7 μm.
m of the present invention having a thickness index (A / B) of 3.5 m
g was obtained. The evaluation results are shown in Table 1 below.

Example 4 About 40 parts of silicic acid anhydride, about 30 parts of magnesium oxide, about 13 parts of aluminum oxide and about 17 parts of potassium silicofluoride were blended, melted at 1400 ° C-1500 ° C, and then 1300 ° C-1400 ° C. Crystallization was performed at ° C to obtain synthetic fluorophlogopite. 10 kg of this synthetic fluorophlogopite was crushed with a ball medium mill, then acid-treated with 1N hydrochloric acid for 1 hour, and heat-treated at 900 ° C. for 1 hour in a muffle furnace. Then, classification was carried out by a natural sedimentation method, and a laser diffraction method average particle diameter (A) of 5.0 μm and a sedimentation method average particle diameter (B) of 3.3 μm.
m, a mica powder of the present invention having a thickness index (A / B) of 1.5, 1K
g was obtained. The evaluation results are shown in Table 1 below.

Example 5 2 kg of muscovite was crushed by a ball medium mill and classified by a natural sedimentation method, and a laser diffraction method average particle diameter (A) 1
300 g of the mica powder of the present invention having a particle size of 0.3 μm, an average particle size by sedimentation method (B) of 4.3 μm and a thickness index (A / B) of 4.3 was obtained. The evaluation results are shown in Table 1 below. Example 6 2 kg of phlogopite was pulverized by a wet high-speed rotary mill, and then classified by a natural sedimentation method, and a laser diffraction method average particle diameter (A)
300 g of the mica powder of the present invention having a particle size of 12.5 μm, an average particle size by sedimentation method (B) of 5.0 μm and a thickness index (A / B) of 2.5 was obtained. The evaluation results are shown in Table 1 below.

Comparative Example 1 About 40 parts of silicic acid anhydride, about 30 parts of magnesium oxide, about 13 parts of aluminum oxide and about 17 parts of potassium silicofluoride were mixed and then melted at 1400 ° C to 1500 ° C, and then 1300 ° C to 1400. Crystallization was performed at ° C to obtain synthetic fluorophlogopite. 10 kg of this synthetic fluorophlogopite was pulverized with a wet medium mill, then acid-treated with 0.3 M citric acid for 1 hour, and heat-treated in a muffle furnace at 900 ° C. for 1 hour. Then, classification was carried out by a natural sedimentation method, and a laser diffraction method average particle diameter (A) of 11.0 μm and a sedimentation method average particle diameter (B) of 2.
1 Kg of mica powder having a thickness of 5 μm and a thickness index (A / B) of 4.4 was obtained. The evaluation results are shown in Table 1 below.

Comparative Example 2 About 40 parts of silicic acid anhydride, about 30 parts of magnesium oxide, about 13 parts of aluminum oxide and about 17 parts of potassium silicofluoride were blended, melted at 1400 ° C-1500 ° C, and then 1300 ° C-1400 ° C. Crystallization was performed at ° C to obtain synthetic fluorophlogopite. 10 kg of this synthetic fluorophlogopite was crushed with a wet high-speed rotary mill, then acid-treated with 1N hydrochloric acid for 1 hour, and heat-treated at 900 ° C. for 1 hour in a muffle furnace. Then, classification was carried out by a natural sedimentation method, and a laser diffraction method average particle diameter (A) of 10.0 μm and a sedimentation method average particle diameter (B) of 7.0.
1 Kg of mica powder having a thickness of μm and a thickness index (A / B) of 1.4 was obtained. The evaluation results are shown in Table 1 below.

Comparative Example 3 About 40 parts of silicic acid anhydride, about 30 parts of magnesium oxide, about 13 parts of aluminum oxide and about 17 parts of potassium silicofluoride were mixed and then melted at 1400 ° C to 1500 ° C, and then 1300 ° C to 1400. Crystallization was performed at ° C to obtain synthetic fluorophlogopite. 5 kg of this synthetic fluorophlogopite was crushed by a wet medium mill, then acid-treated with 1N hydrochloric acid for 1 hour, and heat-treated at 900 ° C. for 1 hour in a muffle furnace. Then, the particles were classified by the natural sedimentation method, and the average particle diameter (A) by the laser diffraction method was measured.
500 g of mica powder having a particle size of 25 μm, an average particle size by sedimentation method (B) of 10 μm and a thickness index (A / B) of 2.5 was obtained. The evaluation results are shown in Table 1 below.

Comparative Example 4 About 40 parts of silicic acid anhydride, about 30 parts of magnesium oxide, about 13 parts of aluminum oxide and about 17 parts of potassium silicofluoride were mixed and then melted at 1400 ° C to 1500 ° C, and then 1300 ° C to 1400. Crystallization was performed at ° C to obtain synthetic fluorophlogopite. 5 kg of this synthetic fluorophlogopite was crushed by a wet medium mill, then acid-treated with 1N hydrochloric acid for 1 hour, and heat-treated at 900 ° C. for 1 hour in a muffle furnace. Then, the particles were classified by the natural sedimentation method, and the average particle diameter (A) by the laser diffraction method was measured.
Thus, 500 g of mica powder having a particle size of 4.4 μm, an average particle size by sedimentation method (B) of 1.2 μm and a thickness index (A / B) of 3.3 was obtained. The evaluation results are shown in Table 1 below.

[0029]

[Table-1]

Next, examples of cosmetics containing the synthetic mica powder of the present invention will be shown. The performance of the cosmetics is shown in Table 2 below.
With respect to the items listed in (1), a five-level sensory evaluation was conducted by 20 specialist panels, and based on the average value of 20 persons, the following symbols were used.

[0031]

[Table-2]

(1) Shine Evaluation Criteria + × 4.5 to 5.0 + Δ 3.5 to less than 4.5 ◎ 2.5 to less than 3.5 −Δ 1.5 to less than 2.5 − × 1.0 or more and less than 1.5 (2) Evaluation criteria for spread, stickiness, smooth feeling of use, cleanliness of makeup skin, familiarity, and adhesion ◎ 4.5 to 5.0 ○ 3.5 to 4.5 Less than □ 2.5 or more and less than 3.5 △ 1.5 or more and less than 2.5 × 1.0 or more and less than 1.5

Examples 7-12: Dual-purpose fundation From the following components, the dual-purpose foundation 7-1 of the present invention.
2 was prepared. (Wt%) 1 Titanium oxide 7 2 Silicone-treated fine particle titanium oxide * 10 3 Muscovite 8 4 Silicone-treated product of each mica powder of Examples 1 to 6 * 6 5 Nylon powder 2 6 Red iron oxide 0.5 7 Yellow Iron oxide 18 Black iron oxide 0.1 9 Silicone oil 1 10 2-Ethylhexyl palmitate 9 11 Sorbitan sesquioleate 1 12 Preservative 0.3 13 Perfume 0.1 * 3 parts of methylhydrogenpolysiloxane 5 97 parts of the powder was mixed with that dissolved in 1 part of dichloromethane, dried and then heat-treated at 180 ° C. for 3 hours.

The above components 1 to 8 were mixed with a Henschel mixer, and the components 9 to 13 which had been heated and dissolved and mixed were added to and mixed with this mixture, which was then pulverized with a 5HP pulsarizer (manufactured by Hosokawa Micron) to obtain a diameter of 5. 160k in a medium dish of 3cm
Molding was performed at a pressure of g / cm ² to obtain a dual-purpose foundation. Comparative dual-purpose foundation 5 in the same manner as above except that the same amount of the mica powder of Comparative Examples 1 to 4 and the sericite-treated silicone powder were used in place of the component 4 mica powder. ~ 9 were prepared.

The sensory evaluation of the dual-purpose foundation prepared as described above and the needle penetration hardness (Olsen hardness meter, load 1 pound) at the time of molding were measured. The penetration hardness corresponds to the moldability, and the evaluation was performed according to the following criteria. ◎ Less than 20 ○ 20 or more and less than 30 □ 30 or more and less than 40 △ 40 or more and less than 50 × 50 or more The results are shown in Table 3 below.

[0036]

[Table-3]

From the results in the above table, it can be seen that the dual-purpose foundation of the present invention received a higher evaluation than the dual-purpose foundation of the comparative example. Example 13: Blusher A brusher 13 of the present invention was prepared from the following components. (Wt%) 1 Talc 15.1 2 Sericite 8.1 3 Mica 5.0 4 Synthetic mica powder of Example 1 60.0 5 Red 226 0.4 6 Titanium mica 3.0 7 Squalane 3.0 8 2-Ethylhexyl palmitate 5.0 9 Preservative 0.3 10 Perfume 0.2

The above components 1 to 5 were mixed with a Henschel mixer, and the components 7 to 10 which had been heated and dissolved and mixed were sprayed onto this mixture, which was further mixed, and then pulverized with a 5HP pulsarizer (manufactured by Hosokawa Micron), and further the component 6 was added. Was added and mixed, and then molded in a medium dish of 4 × 6 cm at a pressure of 120 kg / cm ² to obtain a blusher 13 of the present invention. Component 4 above
Comparative blusher 10 was prepared in the same manner as described above except that 60.0% by weight of synthetic mica powder was replaced with 60.0% by weight of sericite. The blusher prepared as described above was subjected to sensory evaluation in the same manner as in the above example, and the results are shown in Table 4 below.

[0039]

[Table-4]

As is apparent from the above table, the blusher 13 of the present invention is excellent in all sensory evaluation items. The hardness of the blusher is 25 for the blusher 13 of the present invention and 35 for the comparative blusher 10, and it can be seen that the blusher of the present invention has better moldability. Furthermore, as a result of measuring the appearance color of the molded product with a Hitachi Color Analyzer 607, the color saturation of the brusher of the present invention was 11.8 and that of the comparative brusher was 1
It was 0.6, and it was found that the brusher of the present invention had a higher saturation and a vivid appearance color.

Example 14: Fanci powder The fanci powder 14 of the present invention was prepared from the following components. (Wt%) 1 Synthetic mica powder of Example 2 95 2 Talc 4 3 Perfume 1 4 Iron oxide pigment Appropriate amount

After mixing the above components 1, 2 and 4, the component 3 was added thereto and further mixed and filled in a container to obtain the fancy powder 14 of the present invention. Instead of 95% by weight of the synthetic mica powder of the above component 1, the same amount of talc is used (thus totaling 9 talcs).
Comparative Fancy Powder 11 was prepared in the same manner as above, except that 9% by weight) was used. The fancy powder prepared as described above was stored in a 37 ° C. thermostat for one month, and each control (immediately after the production of fancy powder manufactured with the same formulation) was odor-stabilized by sensory evaluation. Sex was compared. Result is,
The fanci powder of the present invention was almost the same as the control and the sample after storage for 1 month, but in the case of the comparative fanci powder, the sample after storage for 1 month had a considerably strange odor compared with the control. Was there.

Example 15: Nail enamel A nail enamel of the present invention was prepared from the following components. (% By weight) 1 Nitrocellulose 12 2 Modified alkyd resin 12 3 Acetyltributyl citrate 5 4 n-Butyl acetate 36.4 5 Ethyl acetate 6 6 n-Butyl alcohol 2 7 Toluene 21 8 Iron oxide pigment 0.5 9 Titanium dioxide 0.1 10 Pearl pigment 2 11 Synthetic mica powder of Example 4 2 12 Organically modified montmorillonite 1

Components 1 to 7 above (however, component 4 is a part)
Was dissolved in the solution, and a gel-like mixture of ingredient 12 and the remainder of ingredient 4 was added and mixed, and ingredients 8 to 1 were added.
1 was added and mixed and filled in a container to obtain a nail enamel 15 of the present invention. In the same manner as above, except that the same amount of sericite was used instead of the synthetic mica powder of the above component 11,
A comparative nail enamel 12 was prepared. The sensory evaluation of the nail enamel prepared as described above is shown in Table 5 below.

[0045]

[Table-5]

As is apparent from the above table, the nail enamel of the present invention is also excellent in sensory evaluation. Example 16: Emulsion foundation An emulsion foundation of the present invention was prepared from the following components. (% By weight) 1 stearic acid 0.4 2 isostearic acid 0.3 3 cetyl 2-ethylhexanoate 4 4 liquid paraffin 11 5 polyoxyethylene (10) stearyl ether 2 6 talc 15 7 pigments 4 8 cetyl alcohol 0.3 9 Preservative 0.07 10 Mica powder of Example 5 3 11 Triethanolamine 0.42 12 Propylene glycol 5 13 Preservative 0.02 14 Ion-exchanged water 54.19 15 Perfume 0.3

After the above components 1 to 9 were heated and dissolved and mixed at 85 ° C., the component 10 was added and uniformly dispersed. to this,
The mixture of components 11 to 14 which had been heated and dissolved and mixed at 85 ° C. was gradually added to emulsify. The temperature at the time of emulsification was maintained for 10 minutes and stirred, and then cooled to 45 ° C while stirring.
Ingredient 15 was added to this, and after stirring and cooling to 35 ° C, the product was taken out and filled in a container to obtain an emulsion foundation 15 of the present invention. A comparative emulsified foundation 13 was prepared in the same manner as described above, except that the same amount of talc was used instead of the mica powder of Component 10. The sensory evaluation of the emulsion foundation prepared as described above is shown in Table 6 below.

[0048]

[Table-6]

As is clear from the above table, the emulsion foundation 15 of the present invention is the emulsion foundation 1 for comparison.
It turns out that it is superior to 3. Example 17: Bath Agent A tablet-type bath agent of the present invention was prepared from the following components. (% By weight) 1 Sodium sulfate 45 2 Sodium hydrogen carbonate 15 3 Sodium carbonate 8 4 Succinic acid 22 5 Synthetic mica powder of Example 1 15 6 Dye proper amount 7 Pigment proper amount The above components are uniformly mixed with a Henschel mixer, and the mixture is cast. The bath agent of the present invention was prepared by molding it into a circular shape with a tablet machine.

[0050]

[Effects] As described above, the mica powder of the present invention has an excellent feeling in use, moldability, and low gloss, so that it is epoch-making compared with the case of using conventional mica powder as a base material for cosmetics. Because it has such a great effect, quality products are exhausted,
It is a strong substitute for sericite, which is highly demanded as a substitute, and it is extremely important to contribute to this industry.

[Table 1]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuji Ogawa 1050 Shinba-cho, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture Shiseido Research Institute Co., Ltd. (72) Inventor Kenichiro Sugimori 1 Toyami, Toyohashi, Toyohashi, Aichi Prefecture Topy Industries Ltd. (72) Inventor, Ryo Suzumura 1, Akemi, Toyohashi, Aichi Toyoi, Ltd.

Claims (4)

[Claims] 1. A synthetic mica powder having a laser diffraction average particle size (A) of 5 μm ≦ A ≦ 20 μm, and a thickness index indicated by the ratio of the above (A) and the sedimentation average particle size (B). (A /
B) is a mica powder characterized in that 1.5 ≦ A / B ≦ 3.5. 2. A muscovite, phlogopite or biotite having a laser diffraction average particle diameter (A) of 5 μm ≦ A ≦ 20 μm,
A mica powder having a thickness index (A / B) represented by the ratio of (A) to the average particle size by sedimentation method (B) is 1.5 ≦ A / B ≦ 3.5. 3. A synthetic mica powder having a laser diffraction average particle size (A) of 5 μm ≦ A ≦ 20 μm and a ratio of (A) to the sedimentation average particle size (B). Thickness index (A /
A cosmetic composition characterized in that B) is blended with a mica powder with 1.5 ≦ A / B ≦ 3.5. 4. A muscovite, phlogopite or biotite having a laser diffraction average particle diameter (A) of 5 μm ≦ A ≦ 20 μm,
A mica powder having a thickness index (A / B) represented by the ratio of (A) and the average particle size by sedimentation method (B) of 1.5 ≦ A / B ≦ 3.5 is blended. And cosmetics.