JPH0812527A - Cosmetic - Google Patents

Abstract

PURPOSE:To obtain a cosmetic spreading well on the skin, excellent in touch feeling when applied, oil absorbability, biocompatibility etc., also remedied in spherical disintegration or deformation and apatite hydroxide slipping off, etc., during its preparation. CONSTITUTION:This cosmetic contains at least one kind of particulate powder selected from spherical calcium carbonate, spherical calcium carbonate-apatite composites and silicone-treated spherical calcium carbonate-apatite composites. It is preferable that the spherical calcium carbonate-apatite composite be such that the surface of spherical light calcium carbonate is coated with apatite.

Description

Detailed Description of the Invention

[0001]

The present invention relates to spherical calcium carbonate, spherical calcium carbonate-apatite composite or silicone-treated spherical calcium carbonate-apatite, which are excellent in skin extensibility, feeling in use, oil absorption, biocompatibility and the like. The present invention relates to a cosmetic containing a complex.

[0002]

2. Description of the Related Art Conventionally, spherical powders such as spherical silica, spherical alumina, spherical nylon and spherical polystyrene have been used to improve the extensibility and feel of cosmetics. It has the drawback of being bad. Therefore, in order to overcome this drawback, cosmetics containing spherical apatite (for example, JP-A-63-96110,
Japanese Unexamined Patent Publication (Kokai) No. 1-96104) and cosmetics containing a spherical composite powder coated with hydroxyapatite (for example,
JP-A-63-27414, JP-A-4-30851
No. 3 gazette) is proposed. However, in the former case, the spherical apatite compounded is formed by granulation by spray drying, so the particle size is not uniform, the particle size distribution width is wide, and it is difficult to obtain fine particles. Sometimes the spherical shape formed by granulation tends to collapse, and in the latter, the spherical composite powder blended is coated with hydroxyapatite by mixing compression, so the surface uniformity is not good,
Whether the hydroxyapatite coated during the preparation of cosmetics is likely to fall off in addition to the poor extensibility (JP-A-63-2741)
No. 4), or the coating pigment to be blended, the base material is not limited to spherical, and since hydroxyapatite is generated in the reaction solution to coat the base material, it is more hydroxylated than the coating on the base material. Crystal growth of apatite is more likely to occur, and the particle size of the coated hydroxyapatite is less likely to be uniform, so that the coated surface is less likely to be uniform, and the extensibility is poor even when the substrate is spherical particles (JP-A-4- 308513).

[0003]

DISCLOSURE OF THE INVENTION The present invention overcomes the above-mentioned drawbacks of conventional spherical powders, is excellent in skin extensibility, feeling in use, oil absorption, biocompatibility, and the like, and is a cosmetic preparation. The purpose of the present invention is to provide a spherical powder-containing cosmetic in which the spherical shape is disintegrated or deformed and the hydroxyapatite is dropped off.

[0004]

Means for Solving the Problems The present inventors have conducted various studies to develop a spherical powder-containing cosmetic having the above-mentioned preferable characteristics, and as a result, spherical calcium carbonate, spherical particles It has been found that the object can be achieved by using a calcium carbonate-apatite composite or a silicone-treated spherical calcium carbonate-apatite composite, and the present invention has been completed based on this finding.

That is, the present invention is a cosmetic composition containing at least one powdery or granular material selected from spherical calcium carbonate, spherical calcium carbonate-apatite composite and silicone-treated spherical calcium carbonate-apatite composite. Is provided.

In the present invention, the powdery or granular material blended in the cosmetic is selected from spherical calcium carbonate, spherical calcium carbonate-apatite composite and silicone-treated spherical calcium carbonate-apatite composite, among which spherical calcium carbonate-apatite. The complex or silicone-treated spherical calcium carbonate-apatite complex has excellent acid resistance compared to spherical calcium carbonate and also has a low pH value, which may cause skin roughness and harmony with skin with a weakly acidic pH value. Since it is not present, it is advantageously used.

The powder or granular material usually has an average particle diameter in the range of 0.1 to 20 μm, preferably 0.1 to 10 μm. If the particle size exceeds 20 μm, a foreign body feels and the skin feels uncomfortable, and if it is less than 0.1 μm, smoothness is not felt, and fine wrinkles and pores of the skin enter, which is not preferable.

The spherical calcium carbonate is not particularly limited as long as it has a substantially spherical shape, for example, a cross-sectional shape of a circle, an ellipse, or a shape similar to those, and regardless of the crystal system, for example, calcite, Aragonite and vaterite are used. As this spherical calcium carbonate,
Preferably, the particle size distribution is such that the average particle size is 2 to 10 μm and at least 50% by weight of the particles are within the range of ± 50% by weight of the average particle size, as described in JP-A-61-168524. Mochi, specific surface area 1 to 15 m ² / g
And light calcite having an average particle size of less than 2 μm.

The spherical calcium carbonate-apatite composite has a base material composed of spherical calcium carbonate, and the surface of the base material is coated with apatite. The composition ratio of the spherical calcium carbonate and the apatite is based on the weight basis. In 10
0: 9 to 100: 100, preferably 100: 9 to 10
It is selected in the range of 0:20. If this ratio is too small, the apatite coating layer is not sufficiently formed on the entire surface of the spherical calcium carbonate, and if it is too large, a mixture of spherical calcium carbonate and apatite is produced.

The apatite coating the surface of the spherical calcium carbonate is not particularly limited, and examples thereof include hydroxyapatite, fluoroapatite, carbonate apatite, etc. Among them, hydroxyapatite is preferable. A particularly preferred spherical calcium carbonate-apatite composite is one in which the base material is spherical light calcium carbonate and the surface of the base material is coated with hydroxyapatite.

The silicone-treated spherical calcium carbonate-apatite composite is obtained by coating the spherical calcium carbonate-apatite composite with silicone oil.
The composition ratio of the spherical calcium carbonate-apatite composite and the silicone oil is 100: 0.1 to 100: 10 by weight.
It is selected in the range of 0, preferably 100: 0.1 to 100: 20. If this amount ratio is too small, the effect of adding silicone oil will not be sufficiently exhibited, and if it is too large, the effect cannot be expected to increase. Examples of the silicone oil include dimethylpolysiloxane, methylpolysiloxane, methylphenylpolysiloxane, decamethyltetracyclosiloxane, octamethyltrisiloxane, and various modified polysiloxanes.

Among spherical calcium carbonate-apatite composites, those in which apatite is hydroxyapatite (hereinafter,
Hydroxyapatite-based complex) is a calcium carbonate suspension, preferably a light calcium carbonate suspension to which an aqueous solution or suspension of water-soluble phosphoric acid or a water-soluble salt thereof is added,
It can be produced by performing coating treatment in the basic region at a temperature of 5 to 250 ° C. under normal pressure or pressure. At this time, treatments such as water washing, filtration, and drying may be performed after the coating treatment.

This calcium carbonate suspension is used by suspending 5 to 100 parts by weight, preferably 10 to 50 parts by weight of calcium carbonate per 100 parts by weight of water. If the amount of this calcium carbonate is too low and the concentration is too low, the productivity will be reduced, and if it is too high and the concentration is too high, the aqueous solution or suspension of water-soluble phosphoric acid or its water-soluble salt will be The dispersibility is not good, local reaction is likely to occur, it is difficult to obtain a uniform coating with apatite, and a mixture of calcium carbonate and apatite is likely to be formed, which is not preferable.

Regarding the aqueous solution or suspension of the water-soluble phosphoric acid or its water-soluble salt added to this calcium carbonate suspension, an amount sufficient to form an apatite coating layer on the entire surface of calcium carbonate, or an appropriate amount. It is important to use one with a concentration. The Ca / P (molar ratio) of light calcium carbonate and water-soluble phosphoric acid or its water-soluble salt is usually 2
-20, preferably 10-20. If this ratio is too small, a mixture of light calcium carbonate and apatite is produced, and if it is too large, the formation of the apatite coating layer on the entire surface of the light calcium carbonate is insufficient, which is not preferable.

Examples of the water-soluble phosphoric acids include orthophosphoric acid, metaphosphoric acid, pyrophosphoric acid, polyphosphoric acid and the like, and examples of the water-soluble salts thereof include NH ₄ H ₂ PO.
₄ , (NH ₄ ) ₂ HPO ₄ , (NH ₄ ) ₃ PO ₄ , NaH ₂ PO
₄ , Na ₂ HPO ₄ , Na ₃ PO ₄ , KH ₂ PO ₄ , K ₂ HPO
₄ , K ₃ PO _{4 and the} like. These may be used alone or in combination of two or more.

Regarding the basic region, the pH is usually 8 to
13, preferably pH 9 to 11 is selected. If this pH value is too low, calcium hydrogen phosphate dihydrate (C
aHPO ₄ .2H ₂ O) and other calcium phosphates other than apatite are produced, and if it is too high, the pH value of the suspension after the reaction will be high, which is not preferable.

Regarding the treatment temperature, there is a relationship with the pressure conditions and the like, and the preferable range also varies, but there is a tendency that the coating treatment speed increases as the temperature increases or the pressure increases. Further, there is a tendency that the coating speed increases as the stirring speed increases.

In order to obtain the calcium carbonate-apatite complex whose apatite is carbonate apatite, that is, to generate carbonate apatite on the surface of calcium carbonate, the production requirements of the hydroxyapatite complex are to be met. In addition, a CO ₂ -containing gas, or urea, or a carbonate such as (NH ₄ ) ₂ CO ₃ , Na ₂ CO ₃ , or K ₂ CO _{3 is} allowed to exist in the reaction system in the form of an aqueous solution or suspension. . These may be used alone or in combination of two or more. Further, among the calcium carbonate-apatite composite, in order to obtain one in which the apatite is fluoroapatite, that is, in order to produce fluoroapatite on the surface of calcium carbonate, in addition to the production requirements of the hydroxyapatite-based composite, Furthermore, NH ₄ F, KF, N
A fluoride such as aF is allowed to exist in the reaction system in the form of an aqueous solution or a water suspension. These may be used alone, or 2
You may use it in combination of 2 or more types.

There is no particular limitation on the cosmetics to be used in the present invention, in which the spherical calcium carbonate, spherical calcium carbonate-apatite composite or silicone-treated spherical calcium carbonate-apatite composite is blended, and examples thereof include powder foundation and dual-use foundation. , Emulsion foundation, liquid foundation, cake foundation, stick foundation,
White powder, talcum powder, preshave, ointment, sunblock, cleansing cream, undermake-up, lipstick, blusher, face powder, body powder, whitening powder, pressed powder, emulsion, lotion, antiperspirant, eye shadow, eye Examples include liners, eyebrow pencils, eye colors, and cheek colors.

[0020]

EFFECTS OF THE INVENTION The cosmetics of the present invention are excellent in extensibility to the skin, feeling in use, oil absorbency, biocompatibility, etc., and at the time of their preparation, spherical shape collapse or deformation, hydroxyapatite dropout, etc. The spherical calcium carbonate-apatite complex or the silicone-treated spherical calcium carbonate-apatite complex is particularly excellent in acid resistance as compared with spherical calcium carbonate.
Since the H value also decreases, the pH value is in harmony with slightly acidic skin,
It is advantageously used because there is no risk of skin irritation.

[0021]

Next, the present invention will be described in more detail by way of examples. In addition, an Example shows the prescription example of various cosmetics. The blending amount of each component is shown by weight%.

Reference Examples 1 to 4 Various powders having the physical properties shown in Table 1 were prepared. These powders were used as the components of the cosmetic samples of Examples and Comparative Examples.

[0023]

[Table 1]

Each physical property was measured as follows. (1) Average particle size: MICROTRACI manufactured by Nikkiso Co., Ltd.
Measured by a type I laser diffraction particle size distribution meter (2) Dynamic friction coefficient: Strograph R type manufactured by Toyo Seiki Seisakusho Co., Ltd. was used. TAPPI paper pulp test method N
O. According to 30-79, a double-sided tape is attached on a sample table, and a fixed amount (18 to 20 g / m ² ) of powder is placed on the surface of the sample to measure (3) angle of repose: Hosokawa Micron's powder tester PT- Measured using N type (4) Oil absorption Measured using castor oil according to JIS-K5101

Reference Examples 5 to 8 Using the Ishikawa type stirring and crushing machine AGA type manufactured by Ishikawa Co., Ltd., the shape of the particles after crushing for 60 minutes was observed by a scanning electron microscope, and the dynamic friction coefficient of the obtained powder was determined. Was measured. The results are shown in Table 2.

[0026]

[Table 2]

As is clear from the above, the spherical calcium carbonate or the spherical calcium carbonate-apatite composite has a stronger particle strength than other spherical powders, and is used in the production of cosmetics such as atomizers, homogenizers and jet mills. Even if a crusher is used, the spherical shape is less likely to be destroyed, and therefore, it is expected to give a good feeling of use such that it has good compatibility with the skin, does not easily lose its makeup, and has good elongation.

Example 1 Powder foundation 1 Spherical calcium carbonate 10.0% 2 Mica 35.0% 3 Kaolin 5.0% 4 Titanium dioxide 10.0% 5 Mica titanium 3.0% 6 Zinc stearate 1.0% 7 Talc 20.0% 8 Red iron oxide 1.0% 9 Yellow iron oxide 3.0% 10 Black iron oxide 0.2% 11 Squalane 6.0% 12 Lanolin acetate 1.0% 13 Octyldodecyl myristate 2.0% 14 Neopentyl glycol diisooctanoate 2.0% 15 Sorbitan monooleate 0.5% 16 Perfume 0.3% The powder foundation having the above composition is prepared by mixing the above components 7 to 10 with a blender (Henschel mixer). After adding components 1 to 6 and mixing well, components 11 to 15 are added, and component 16 is sprayed and mixed uniformly,
The resulting mixture was then ground in a grinder (atomizer), screened and prepared by compression molding in a medium dish.

Comparative Example 1 A powder foundation was obtained in the same manner as in Example 1 except that spherical hydroxyapatite powder (average particle size 15 μm) prepared by spray granulation was used instead of spherical calcium carbonate.

Each powder foundation of Example 1 and Comparative Example 1 was subjected to a practical test by 10 panelists. Table 3 shows the results.

[0031]

[Table 3]

Example 2 A powder foundation was obtained in the same manner as in Example 1 except that spherical calcium carbonate-apatite composite was used instead of spherical calcium carbonate.

Each powder foundation of Example 2 and Comparative Example 1 was subjected to a practical test by 10 panelists. The results are shown in Table 4.

[0034]

[Table 4]

From Tables 3 and 4, it can be seen that those of the present invention are superior in smoothness to those of the comparative example, and there is no powder floating.

Example 3 Dual-use foundation 1 Silicone-treated spherical calcium carbonate-apatite composite 3.0% 2 Silicone-treated mica 39.7% 3 Silicone-treated titanium dioxide 15.0% 4 Silicone-treated ultrafine titanium dioxide 5.0% 5 Silicone treated talc 18.2% 6 Silicone treated red iron oxide 1.0% 7 Silicone treated yellow iron oxide 3.0% 8 Silicone treated black iron oxide 0.2% 9 Zinc stearate 0.1% 10 Squalane 4.0% 11 Solid paraffin 0.5% 12 Dimethyl polysiloxane 4.0% 13 Glycerin triisooctanoate 5.0% 14 Octyl methoxycinnamate 1.0% 15 Perfume 0.3% The dual-use foundation having the above composition is the above component 5
8 to 8 are mixed with a blender (Henschel mixer), components 1 to 4 are added thereto and well mixed, and then components 9 to
14 was added, component 15 was sprayed on, homogeneously mixed, then the resulting mixture was ground in a grinder (atomizer), sieved and prepared by compression molding in a medium dish.

Example 4 Emulsion type foundation 1 Spherical calcium carbonate-apatite composite 5.0% 2 Titanium dioxide 12.0% 3 Silica anhydride 2.0% 4 Talc 7.0% 5 Bengala 1.0% 6 Yellow Iron oxide 1.0% 7 Black iron oxide 0.5% 8 Octamethylcyclotetrasiloxane 10.0% 9 Rosin pentaerythritol ester 1.5% 10 Neopentyl glycol diisooctanoate 5.0% 11 Squalane 2.5 % 12 Glycerin triisooctanoate 2.0% 13 Polyoxyethylene-modified dimethylpolysiloxane 1.5% 14 Purified water 38.0% 15 1,3-Butylene glycol 4.0% 16 Ethanol 7.0% Having the above composition. The emulsion type foundation is prepared by mixing the above components 4 to 7 with a blender (Henschel mixer),
After adding Components 1 to 3 and mixing them well, this is pulverized by a pulverizer (atomizer) and sieved, and then Components 14 to 16 are added after stirring with a homomixer, and Components 8 to 13 are further added. Was added after dissolution, treated with a homomixer, degassed and filled in a container.

Example 5 White powder 1 Spherical calcium carbonate-apatite complex 5.0% 2 Kaolin 5.0% 3 Titanium dioxide 3.0% 4 Zinc stearate 5.0% 5 Sericite 7.0% 6 Perfume 0 .2% 7 talc 73.8% 8 red iron oxide 0.3% 9 yellow iron oxide 0.6% 10 black iron oxide 0.1% White powder having the above composition was prepared by blending the above ingredients 7 to 10 with a blender (Henschel mixer). Mix and add ingredients 1-5
Was added and mixed well, then component 6 was sprayed and mixed uniformly, then the resulting mixture was crushed with a crusher (atomizer), sieved and compression molded into a medium dish.

Example 6 Talcum powder 1 Spherical calcium carbonate-apatite complex 20.0% 2 Talc 73.8% 3 Magnesium stearate 3.0% 4 Squalane 3.0% 5 Perfume 0.2% Having the above composition. Talcum powder is the above components 1-4
After mixing with a blender (Henschel mixer),
Ingredient 5 was prepared by spraying, mixing homogeneously, then crushing the resulting mixture with a crusher (atomizer), sieving and compression molding in a medium dish.

Example 7 Preshave 1 Ethanol 92.6% 2 Spherical calcium carbonate-apatite complex 5.0% 3 Glyceryl tri-2-ethylhexanoate 1.0% 4 1,3-butylene glycol 1.0 % 5 Vitamin E acetate 0.2% 6 Perfume 0.2% A pre-shave having the above composition was prepared by stirring and dissolving components 2 to 6 in component 1 above.

Claims (2)

[Claims] 1. A cosmetic comprising at least one powder selected from spherical calcium carbonate, spherical calcium carbonate-apatite composite and silicone-treated spherical calcium carbonate-apatite composite. 2. The cosmetic composition according to claim 1, wherein the spherical calcium carbonate-apatite composite is a spherical light calcium carbonate whose surface is coated with apatite.