JP2978303B2 - Cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to cosmetics, and more particularly to cosmetics capable of protecting the skin of the human body against sunlight, especially infrared rays.

[0002]

2. Description of the Related Art In general, sunlight reaching the ground surface includes ultraviolet rays having a wavelength range of 290 to 400 nm and 400 rays.
Visible light having a wavelength range of -800 nm and 800 n
There is an infrared ray having a wavelength range of m (0.8 μm) to 1 mm.
It is known to be divided into ordinary infrared rays of 2.5 to 25 μm and far infrared rays of about 25 μm or more.

[0003] Many ultraviolet absorbers and ultraviolet scattering agents have been developed since ultraviolet rays cause harmful effects such as erythema and skin browning. On the other hand, infrared rays have recently been developed. Infrared rays reaching the dermis, especially near-infrared rays, cause vasodilation and skin temperature rise, giving rise to a feeling of heat pain and possibly causing burns. It has become known to modify elastic fibers to promote aging phenomena such as wrinkles and sagging.

Conventionally, there have been various cosmetics and methods as described below as means for protecting this infrared ray.

[0005] Talc [3] known as a powder for cosmetics
MgO · 4SiO ₂ · H ₂ O or (OH) ₂ Mg ₃ (SiO
₅ ) ₂ ], magnesium silicate-based powders such as chlorite, magnesium aluminosilicate-based powders such as cordierite, isodialite, pyrope, and muscovite [KAl ₂ (A
lSi ₃ ) O ₁₀ (OH) ₂ or K ₂ O.3Al ₂ O ₃ .6S
iO ₂ · 2H ₂ O], a method of blending the potassium-alumina-silicate based powder such as sericite

[0006] JP-A-62-149613 and JP-A-63-27421 disclose "metal powders such as aluminum powder, gold powder and silver powder, and flakes such as flaky titanium oxide and flaky zirconium oxide. Cosmetics containing powdered metal oxide powder "

[0007] JP-A-63-27419 describes "cosmetics containing a colored metallic aluminum having a metallic oxide adhered to the surface of metallic aluminum".

A method using a composite powder obtained by adhering fine zirconium oxide particles to the surface of a recently developed spherical polyamide powder or a composite material obtained by sintering zirconium oxide and cerium oxide

In addition, a method using a reduced product of 6-tungsten chloride

[0010]

However, each of the above-mentioned prior arts has the following disadvantages.

In the method of blending magnesium silicate-based powder, magnesium aluminosilicate-based powder and potassium-alumina-silicate-based powder, each of these powders has a wavelength of 1 μm, which is the most problematic for the skin. There is no absorption band in the near infrared region as the center, for example, talc,
Muscovite, sericite, and the like have absorption at a wavelength of 9.5 to 10 μm or more, and cordierite, pyrope, and the like have emission characteristics in the far infrared region.

The various powders in the cosmetics obtained in JP-A-62-149613 and JP-A-63-27421 are, for example, metal powders such as aluminum powders, which are metal and thus have a low visible light transmittance. Bad opacity,
Further, it has the property of being thick on the skin and has the drawback of giving an opaque, thick make-up finish, and also has the drawback that the metal itself usually has a silver gray color, and the make-up finish has a grayish color tone and feels dull.

On the other hand, fine particle titanium oxide, one of the metal oxide powders, has a transmittance at a wavelength of 1 μm in the near infrared region.
It is 75.4% (KBr method: 0.7 mg / 300 mg), and although it has an ultraviolet ray cut effect, a near infrared ray cut effect cannot be expected from previous studies. Zirconium oxide is K
According to the measurement by the Br method (0.7 mg / 300 mg KBr), although it has an absorption band of a wavelength of about 15 to 20 μm,
The transmittance at a wavelength of m is 83.5%, and the cut effect in the near-infrared region cannot be expected much like the fine particle titanium oxide.

The colored metallic aluminum in the cosmetic obtained in Japanese Patent Application Laid-Open No. 63-27419 has a make-up finish and a grayish finish less than the case where aluminum powder is used. If it is desorbed or blended by 3% or more, a dull phenomenon is observed as in the case of aluminum powder. Furthermore, there is a tendency that the difference between the coating color and the appearance color tends to be large, and the tendency is further increased when a necessary amount for blocking infrared rays is used.

In the method using a composite powder in which fine zirconium oxide particles are adhered to the surface of a spherical polyamide powder, as described above, in addition to the weak cutting effect of zirconium oxide in the near infrared region, the amount of zirconium oxide adhering to the surface is reduced. Due to the small amount, the infrared absorption of the polyamide powder is mainly detected, and the cutting effect of zirconium oxide is quite low.On the other hand, the method using a composite material obtained by sintering zirconium oxide and cerium oxide is also difficult. Is 18μ
Since these two composites have a strong absorption band in a wavelength region of m or more, they can be used as far-infrared radiation material, but no effect as near-infrared cutoff material can be expected at all.

In the method using a reduced product of 6-tungsten chloride, it is known that this substance has a high absorption effect at a wavelength of 1 μm, but when exposed to light for a long time, it fades or becomes darker. Drawbacks and poor stability.

The present invention has been made in view of the above circumstances, and has a sufficient infrared ray blocking effect, particularly near infrared ray shielding effect, and can provide a cooling sensation and a skin temperature rise preventing effect. An object of the present invention is to provide a cosmetic that is not only possible but also does not impair the makeup effect such as transparency.

[0018]

According to the present invention, there is provided a composite powder comprising at least two phases of a metal carbide and a metal nitride, and a coating layer on a surface of the composite powder. The above object can be achieved by a cosmetic comprising one or more of the coated composite powders.

The above object can be similarly achieved by a cosmetic comprising one or more of the coated composite powders having a coating layer on the surface of the composite powder.

The composite powder is preferably a nanocomposite powder comprising a finely dispersed phase and a matrix phase in which this phase is dispersed.

The coating layer preferably comprises at least one of a metal, a metal oxide and a composite oxide.

The average particle diameter of the composite powder and the coated composite powder is preferably 0.01 to 40 μm, and the maximum particle diameter is preferably 100 μm or less.

In the cosmetic, one or more of the composite powder and the coated composite powder are preferably blended in an amount of 0.1 to 50% by weight.

The metal carbide is preferably at least one compound of W, Si or Ti and carbon.

The metal nitride is preferably one or more compounds of W, Si or Ti and nitrogen.

[0026]

The composite powder and the coated composite powder block near-infrared rays which harm the elastic fibers of the dermis, while having high permeability to far-infrared rays, are absorbed by the human epidermis and converted into thermal vibrations. It is expected that the dermal capillaries will be slowly stimulated to promote blood circulation and activate metabolism, thereby inhibiting skin aging.

Further, the composite powder and the coated composite powder are
By blocking near-infrared rays, which are known as strong heat rays, over a wide area, the rise in skin temperature can be suppressed and a refreshing sensation can be imparted over a long period of time. Can be improved.

The coated composite powder having a coating layer on the surface of the composite powder has a wide range of usable cosmetics. That is, many of the composite powders have colors with low chroma such as black purple, black, gray green, and green. These powders can be used alone for an eyeliner, an eyebrow, etc., but by providing a coating layer comprising at least one of a metal, a metal oxide and a composite oxide on the surface of these composite powders, It can be used for other cosmetics.

The infrared shielding effect of the powder is specifically illustrated. When the blocking power at a wavelength of 1 μm in the near infrared region of zirconium oxide, which is conventionally known as a typical infrared shielding agent, is defined as 1, It is as follows.

The TiN phase (70%) and the TiC phase (30%)
Is 6.03 times that of crystalline-based composite powder with TiC
The crystalline-based composite powder composed of a TiN phase (30%) dispersed in a phase (70%) is 5.72 times, and a WC phase (70%) is TiC
The composite powder composed of dispersed phases (30%) is 3.60 times, and the composite powder composed of WC phase (50%) and TiC phase (50%) is 3.60 times.
57 times (the abundance of each phase in the above composite powder depends on mol%), Si ₃ N ₄ .SiC type (C = 22.9w)
(t%) of amorphous composite powder is 6.05 times, and that of Si ₃ N ₄ .SiC type (C = 22.9 wt%) mainly composed of crystalline composite powder is 5.68.
Fold, Si ₃ N ₄ · SiC type (C = 7.3 wt%) as crystalline composite powder entities of 2.10 times, Si ₃ N ₄ · SiC type (C =
(8.1 wt%) amorphous composite powder is 5.91 times.

SiC has a high ultraviolet ray blocking effect, and by containing a large amount thereof, an ultraviolet-infrared ray blocking effect can be produced.

Talc, which is a representative of clay minerals, is 0.2%.
Times, the aluminum powder is 0.97 times.

While the blocking effect of zirconium oxide gradually attenuates in the near infrared region (wavelength 1 to 2.5 μm) where the heat energy is higher, the powder according to the present invention has:
In the near-infrared region, some have a blocking effect equivalent to a blocking effect at a wavelength of 1 μm. In the near-infrared region, there is a filter that gradually attenuates the blocking effect at a wavelength of 1 μm. However, the tendency of the attenuation is slower than that of zirconium oxide, and the blocking effect at a wavelength of 1 to 2.5 μm is extremely high.

The fine particles of titanium oxide and ZrO ₂ have a wavelength of 1
It blocks 24.62% and 16.51% of near-infrared rays of μm, and transmits 48.80% and 55.38% of visible light, respectively. In contrast, the powder according to the present invention has a wavelength of 1 μm
m has a high effect of blocking near-infrared rays, a high visible light transmittance, and a high transparency.

Table 1 shows the infrared ray blocking rate and visible light transmittance of the powder of the present invention at a wavelength of 1 μm. For reference, TiO ₂ , ZrO ₂ , talc, sericite and diamond particles are also shown.

[0036]

[Table 1]

In clay minerals and the like, alkali ions are eluted with perspiration, and the skin surface becomes alkaline. This is different from the original pH of the skin surface of 5 to 6, which may cause discomfort of the cosmetic film on the skin. The powder according to the present invention has no elution of alkali ions, suppresses discomfort of the skin, and is excellent in terms of safety.

[0038]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The composite powder of the present invention comprises at least two phases of a metal carbide and a metal nitride. The metal carbide and the metal nitride may be compounds whose composition does not necessarily follow the valence, and may be crystalline or amorphous.

The composite powder is preferably a nanocomposite powder. The nanocomposite powder comprises a finely dispersed phase and a matrix phase in which the finely dispersed phase is dispersed. The finely dispersed phase may be present at the grain boundary of the matrix phase. The finely dispersed phase is
Consisting of one or more of metal carbides and metal nitrides. The size of the finely dispersed phase is on the nanometer level, and some have a diameter of, for example, 50 nm or less.

In some cases, the proportion of the finely dispersed phase in the nanocomposite powder exceeds the proportion of the matrix phase. The finely dispersed phase may be a fine crystalline layer or an amorphous phase.

The finely dispersed phase is preferably WC, Si
Metal carbides such as C and TiC, WN, SiN, TiN, S
At least one of metal nitrides such as i ₃ N ₄ .

The matrix phase preferably comprises at least one of the above-mentioned metal carbides and metal nitrides. The composition of the matrix phase can be different from the finely dispersed phase.

The preferred combination of the composition of the finely dispersed phase and the matrix phase in the nanocomposite powder is TiN and T
There are iC, Si ₃ N ₄ and SiC, and TiC and WC.

The nanocomposite powder can be purchased and obtained from Mitsubishi Gas Chemical Company, Ltd.

The nanocomposite powder may have a coating layer on the surface. The coating layer can be composed of one or more of a metal, a metal oxide and a composite oxide.

The metal used for the coating layer is usually gold,
There are silver, copper, and the like.

Preferred metal oxides are those of white to pale yellow. For example, In ₂ O ₃ , Nb ₂ O ₅ , Ti
O ₂ , ZnO, Al ₂ O ₃ , ZrO ₂ , CeO, MgO, Z
It is a compound of one kind of metal such as nO, SiO ₂ and oxygen. Fe ₂ O ₃ , FeO.OH or the like can also be used. Further, a composite metal oxide which is a compound of two kinds of metals and oxygen may be used, such as Al ₂ O ₃
· 2MgO, ZrO ₂ · CeO, Al ₂ O ₃ · 2ZnO and the like. Further, magnesium aluminosilicate such as cordierite, isodialite and pyrope can also be used.

As a method for forming a coating layer of a metal oxide or a composite oxide, a hydroxide is obtained from a metal salt by hydrolysis, and the hydroxide is thermally decomposed. A precipitant is added to a mixed metal salt. Liquid phase method such as coprecipitation method to obtain a composite oxide by thermal decomposition and homogeneous mixing and precipitation, solvent evaporation method from metal salts, freeze drying method, spray drying method, precipitation method obtained by spray decomposition method, homogeneous precipitation method, etc. Gas phase methods such as phase reaction method and evaporative condensation method ,
Metal carbide and metal chips in an oxidizing atmosphere or a reducing atmosphere
Heat treatment of powders of boride and metal boride
There are methods for forming a metal oxide layer on the body surface, but the method is not particularly limited to these methods. The metal coating layer can be formed by, for example, electroless plating.

The average particle diameter of the powder and the coated powder in the present invention is 0.01 to 40 μm, preferably 0.1 to 40 μm.
25 μm, while the maximum particle size is 100 μm.
m or less, preferably in the range of 0.01 to 50 μm, can be advantageously used from the viewpoint of feel and finish.

Next, the amount of at least one of the powder and the coated powder in the cosmetic of the present invention is not particularly limited, but the ultraviolet ray cutting effect and other components of the cosmetic are not limited. When considering the total amount of cosmetics, 0.
The range of 1 to 50% by weight, preferably 1 to 30% by weight is selected depending on the dosage form and purpose.

In the cosmetic of the present invention, if necessary, a conventionally known ultraviolet ray blocking substance may be blended together with at least one of the above-mentioned powders and coated powders to simultaneously block both infrared rays and ultraviolet rays. A suitable cosmetic for summer is obtained. As a specific example,
Aminobenzoic acid ultraviolet absorbers such as ethyl paraaminobenzoate and 2-ethylhexyl paradiethylaminobenzoate; cinnamic ultraviolet absorbers such as propyl paramethoxycinnamate and 2-ethylhexyl paramethoxycinnamate; salicylic acid Salicylic acid-based ultraviolet absorbers such as methyl and benzyl salicylate; benzophenone-based ultraviolet absorbers such as 2-hydroxy-4-methoxybenzophenone, 2,2 ', 4,4'-tetrahydroxybenzophenone;
Dibenzoylmethane-based ultraviolet absorbers such as -t-butyl-4'-methoxydibenzoylmethane, and ultraviolet scattering agents such as titanium oxide, fine titanium oxide, fine zinc oxide, and fine iron oxide. It is blended in the mixture in the range of 0.5 to 30% by weight.

The powder and the coated powder according to the present invention,
With respect to the components excluding the ultraviolet ray blocking substance, all the raw materials usually used in cosmetics can be used. Specifically, various oils, powders and / or pigments, surfactants, thickeners, preservatives, There are antioxidants, fragrances, various drugs, etc.
There are no restrictions on the manufacturing method.

Further, the form of the cosmetics can be applied to a wide range of cosmetics such as lipsticks, foundations, eye products, blushers, powdered powders, eye creams, etc., as well as other emulsions, creams, antiperspirants, etc. Is possible.

Next, a transmission spectrum diagram is shown to show how the powder of the present invention is more excellent in the cutting effect in the near infrared region as compared with the conventional infrared protective substance. As samples, composite powders (a), (b), (c), (d), (e), (f) and (g) shown in Table 1 were used. Powder (4.3μ
m), talc powder (3.8 μm), metallic aluminum powder (9.4 μm) and zirconium oxide powder (4.2 μm)
m) and the fine particle titanium oxide (0.05 μm) was measured by the KBr method (sample 0.7 mg / 300 mg KBr). These results are shown in FIGS. In each figure, the horizontal axis indicates the wavelength (nm), and the vertical axis indicates the transmittance (%).

As is clear from the transmission spectrum diagram, it was proved that the powder according to the present invention had a higher infrared cut effect as compared with the conventional infrared protective substance.

[0056]

Embodiments of the present invention will be described below. The mixing ratio is part by weight.

As for the nanocomposite powder, for example, the TiN phase of Example 1 in which the TiC phase is dispersed at a molar ratio of 70:30 is used as the TiC (30) / TiN (70) type nanocomposite powder ( This is shown as titanium carbonitride powder manufactured by Nippon Shinkin Co., Ltd.

For the Si ₃ N ₄ .SiC type composite powder, the abundance of C is indicated by wt%.

Example 1 Eyebrow cake (A) Silicone treated talc 50 Silicone treated sericite 20 Magnesium stearate 2 Amino acid treated sericite 2 Titanium oxide 1.2 Spherical polymethyl methacrylate powder 9 Titanium mica 2 TiC (30) / TiN (70) type amorphous nanocomposite powder (average particle diameter 2.3 μm) 8 (B) Methylpolysiloxane 3 Octyldodecyl dimethyloctanoate 1.4 Octyldodecyl myristate 1.4 (Preparation method) Stir in a mixer, take out, and pulverize with a pulverizer. Next, the pulverized material is transferred to a Henschel mixer, (B) is added thereto, and the mixture is stirred and mixed.

Example 2 100 parts of titanium tetraisopropoxide were dissolved in 500 parts of summer cake foundation IPA (isopropyl alcohol) and dissolved in this solution. Si ₃ N ₄ .SiC (C = 22.9%) type crystalline composite Disperse 26.0 parts of powder. Separately, IPA5
After dropping a solution obtained by dissolving 50 parts of purified water in 00 parts,
The mixture was filtered and calcined at 500 ° C. for 6 hours to obtain a titanium oxide coated composite powder. (A) Fluorine treated sericite 20 Silicone treated talc 10 Fluorine treated titanium oxide 20 Metal soap treated ultrafine titanium oxide 10 Spherical polymethyl methacrylate powder 6 Spherical nylon powder 10 Titanium oxide coated Si ₃ N ₄ .SiC (C = 22.9 %) Type crystalline composite powder (average particle diameter 1.07 μm) 5.0 Silicone-treated red iron oxide 1.7 Silicone-treated yellow iron oxide 4.4 Ultramarine blue 0.1 (B) Methylpolysiloxane 4.5 Tri-2- Glycerin ethylhexanoate 3.0 Squalane 5.0 Methylparaben 0.2 Fragrance 0.1 (Preparation method) (A) is put into a Henschel mixer, stirred, taken out, and pulverized by a pulverizer. Next, the pulverized material is transferred to a Henschel mixer, (B) is added thereto, and the mixture is stirred and mixed.

Example 3 Teak shadow cake Si ₃ N ₄ .SiC (C = 8.1%) type amorphous composite powder (MGC hybrid powder manufactured by Mitsubishi Gas Chemical Co., Ltd.) 80
g, 0.4 g of sodium hexametaphosphate, 1.5 g of a cationic activator, and 300 g of purified water are placed in a 1-liter ball mill and ground in a ball mill for 16 hours. This is transferred to a 2 liter beaker and purified water is added to a total volume of 800 ml. Then, while stirring using a _three-one motor, AlCl ₃
・ 6H ₂ O 53g / 200ml purified water, MgCl ₂・ 6H
After addition of the aqueous solution of _{2 O44.4g} / 200ml purified water,
A neutralizer solution prepared by dissolving 41.1 g of NaOH in 300 ml of purified water is added dropwise over 1 hour to pH 9.0. Then stirred 10 minutes, Mg (OH) washed twice more with 3 times washing filtration was then ethanol ₂ saturated solution was washed twice with n- hexane, and 6 hours and calcined at 600 ° C. Al ₂ O ₃ 2MgO coated Si ₃ N ₄ .SiC type composite powder was obtained. (A) Al ₂ O ₃ .2MgO coated Si ₃ N ₄ .SiC type composite powder (average particle size 1.26 μm) 47 Silicone treated sericite 25 Silicone treated talc 7.35 Titanium mica 1 Titanium oxide coated Si ₃ N ₄ · SiC type (C = 22.9%) crystalline composite powder (average particle diameter 1.67 .mu.m) 5 red No. 226 0.2 silicone-treated red iron 0.15 silicone-treated yellow iron oxide 0.85 ultramarine 0.15 (B ) Methylpolysiloxane 4.5 Glycerin tri-2-ethylhexanoate 3.5 Squalane 2 Diglycerin triisostearate 3 Ethylparaben 0.2 Perfume 0.1 (Preparation method) Put (A) in a Henschel mixer and mix by stirring. After that, pulverize with a pulverizer. Next, the pulverized material is transferred to a Henschel mixer, (B) is added thereto, and the mixture is stirred and mixed.

Example 4 20 g of liquid foundation WC (50) / TiC (50) type nanocomposite powder (double carbide powder manufactured by Nippon Shinkin Co., Ltd.) and Si ₃
80 g of N ₄ .SiC (C = 7.3%) type crystalline composite powder
The solution is placed in 2.0 l of an aqueous solution in which 3 g of a cationic surfactant is dissolved, and treated with a ball mill for 20 hours. 5 g of the polymethacrylic acid ester solution is added to the dispersion obtained by this treatment, and the mixture is further treated with a ball mill for 10 hours. An aqueous solution obtained by dissolving magnesium sulfate (8.06 g as MgO) and aluminum sulfate (2.04 g as Al ₂ O ₃ ) in the dispersion obtained by this treatment 500
ml and 500 ml of an aqueous solution of sodium silicate (30.0 g as SiO ₂ ) are added dropwise at a rate of 8 ml / min.
At the same time, a 1N aqueous ammonia solution was added at pH 10-1.
Add in a controlled range of 0.5. After the reaction treatment, the mixture was filtered, washed with water, dried, and calcined at 500 ° C. for 1 hour to obtain amorphous magnesium aluminosilicate coated W
C (50) / TiC (50) nanocomposite powder and amorphous magnesium aluminosilicate coated Si ₃ N _4.
A SiC (C = 7.3%) type composite powder was obtained.

(A) Cetyl 2-ethylhexanoate 2 Stearic acid 1 Cetanol 0.5 Behenyl alcohol 0.5 Liquid paraffin 1 Octyldodecyl oleate 1 Sucrose fatty acid ester 1 Magnesium aluminosilicate coated WC (50) / TiC (50) type nanocomposite powder and magnesium aluminosilicate code Tipper de _{Si 3 N 4 · SiC (C} = 7.3%) type mixture of the composite powder (average particle diameter 2.5 [mu] m) 5 volatile silicone 1.5 activator 4 dye paste 5 (B) Propylene glycol 4 Glycerin 5 Methylparaben 0.2 Caustic potash solution 2 Thickener 0.3 Purified water 65.9 (C) Fragrance 0.1 (Preparation method) (A) is dissolved in a dissolving vessel at 80 ° C. Then, separately dissolved (B) was added, and emulsified.
After cooling to (C), the mixture is further cooled to room temperature, taken out and filled into a container to obtain a product.

Example 5 Under-makeup Si ₃ N ₄ .SiC (C = 22.9%) type amorphous composite powder 40
g of degreasing treatment with an aqueous alkali solution, and purified water 100 m
The silver complex salt solution having the following composition was added dropwise at room temperature for 7 minutes while stirring at 400 rpm, and the mixture was further stirred for 1 hour and filtered, and silver-coated Si ₃ N ₄ .SiC (C = 22.9)
%) Type amorphous composite powder was obtained. The silver-coated composite powder was washed until pH 7 and dried at 50 ° C. under vacuum. The composition of the silver complex salt solution used is as follows.

AgNO ₃ 0.6 g Aqueous ammonia (28%) 5.0 g Monoethanolamine 0.05 g Water 100 ml EDTA · 2Na 4.0 g (A) Octyldodecyl erucate 1 Cetanol 0.1 Silver coated Si ₃ N ₄ .SiC (C = 22.9%) type composite powder (average particle diameter 4.3 μm) 0.1 Activator 4 Water-soluble silicone 0.3 Liquid paraffin 0.8 (B) Propylene glycol 5 Glycerin 10 Methyl paraben 0.2 Thickener 0.2 Maltitol 0.2 Caustic potash 0.07 Purified water 77.93 (C) Fragrance 0.1 (Preparation method) (A) is dissolved in a dissolving pot at 80 ° C. and then separately dissolved. Add the prepared (B) and emulsify. Thereafter, the mixture is cooled to 40 ° C.
Take it out and fill it into a container to make the product.

Example 6 Lipstick TiN (30) / TiC (70) type nanocomposite powder (titanium carbonitride powder manufactured by Nippon Shinkin Co., Ltd.) 80 g, hexametaphosphoric acid 0.4 g, purified water 300 m
1 is treated in a ball mill for 24 hours. Take it out and make up to 800 ml with purified water. Water glass 54.8g / 3
Add 00 ml of purified water and mix uniformly. Add 1 to this mixture
26.5 ml of 2N HCl / 300 ml of purified water is added dropwise over 60 minutes to neutralize. Thereafter, stirring was continued for 15 minutes, followed by filtration water washing 4 times, acetone washing 2 times, and n-hexane washing 2 times.
After that, calcining was performed at 300 ° C. for 12 hours to obtain a SiO ₂ coated TiN (30) / TiC (70) type nanocomposite powder. (A) Microcrystalline wax 11.2 Candelilla wax 5 Polyethylene wax 6 SiO ₂ coated TiN (30) / TiC (70) type nanocomposite powder (average particle diameter 5.8 μm) 9 Silver coated Si ₃ N ₄ .SiC type Composite powder (average particle size: 8.3 μm) 2 Olive oil 2 Octyldodecyl oleate 28 2-Cetyl 2-ethylhexanoate 28 Activator 0.5 Titanium oxide 1 Titanium mica 2 Legal pigment 5 Red leaf 0.2 Perfume 0.1 (Preparation Method) (A) is charged into a dissolving pot, uniformly dispersed and dissolved at 80 ° C., and then defoamed. Then, after pouring into a mold and cooling, it is put into a container to obtain a product.

(Comparative Experiment) The cosmetic obtained according to the present invention was compared with a conventional cosmetic and a comparative cosmetic by an infrared ray cut effect and a sensory evaluation.

<Infrared ray cutting force test> (A) Eyebrow cake of Example 1 of the present invention (A) Summer cake foundation of Example 2 of the present invention (C) Teak shadow cake of Example 3 of the present invention (D) Liquid foundation of the fourth embodiment of the present invention (E) Under makeup of the fifth embodiment of the present invention (F) Lipstick of the sixth embodiment of the present invention (G) Summer cake foundation of A maker product (C) B maker product (C) Summer cake foundation of C maker product (c) Comparative summer in which the TiO ₂ coated composite powder in the summer cake foundation of Example 2 of the present invention was replaced with metal aluminum powder (9.4 μm) Cake foundation

Experimental Method A dispersion in which 1 g of a sample was dispersed in 4 g of castor oil was applied on a slide glass to a thickness of 0.5 mil, and the dispersion was set on a light receiving portion of an integrating illuminometer by using an infrared lamp. Irradiation was performed for 5 minutes, the count number of the illuminometer was read, the infrared transmittance was calculated, and the reciprocal thereof was determined as the infrared cut rate.

[0070]

[Table 2]

As shown in the results in Table 2, it was demonstrated that the cosmetic of the present invention had an excellent infrared ray cutting effect.

<Heat Sensation Sensory Test> Sample The same summer cake foundation of the present invention (a) and the comparative product (co) as those used in the infrared cut force test described above were used.

Experimental Method Samples of the product of the present invention and the comparative product were tested by a blind method. Specifically, for 41 female panelists, both samples were applied half-faced, and asked to self-determine which one did not feel heat under infrared irradiation by an infrared lamp or under the sunshine in the midday sun. Was.

Experimental Results Those who answered that the present invention did not clearly feel the heat,
Of the 41 persons, 38 persons in the case of the infrared lamp and 40 persons in the case of the sun ray, it was found that the product of the present invention was remarkably more excellent in the effect of suppressing hot sensation than the comparative product.

<Sensory Test by Actual Use> Samples The same summer cake foundations of the product of the present invention (a) and the commercial products (g), (c), and (g) used in the infrared cut force test were used. .

Experimental Method 124 women, who commonly use the summer cake foundation, were randomly divided into 4 groups (A to D), 31 each.
Group). The product of the present invention (A) is used in Group A, the commercial product (G) is used in Group B, the commercial product (C) is used in Group C, and the commercial product (K) is used in Group D for two months. For each sensory evaluation item, perform a sensory evaluation by the 10-point method,
The results are shown in Table 3 as the average value of 31 persons (rounded down to the second decimal place).

[0077]

[Table 3]

As shown in the results in Table 3, the summer cake foundation of the product of the present invention has not only the overall quality as compared with the commercially available summer cake foundation, but also
In particular, it was proved to be excellent in items of long-lasting makeup and refreshing feeling.

[0079]

The cosmetic of the present invention is a composite powder comprising at least two phases of a metal carbide and a metal nitride, and a coated composite powder having a coating layer on the surface of the composite powder. Since it contains one or more of the body, it is excellent in the effect of blocking infrared rays, and the effects such as the imparting of a refreshing feeling and the imparting of a makeup stickiness are, of course, extremely excellent. It is possible to further improve the makeup effect such as uniformity of the surface.

[Brief description of the drawings]

FIG. 1 is a transmission spectrum diagram of a composite powder (a) in the present invention.

FIG. 2 is a transmission spectrum diagram of a composite powder (b) in the present invention.

FIG. 3 is a transmission spectrum diagram of a composite powder (c) in the present invention.

FIG. 4 is a transmission spectrum diagram of the composite powder (d) in the present invention.

FIG. 5 is a transmission spectrum diagram of a composite powder (e) according to the present invention.

FIG. 6 is a transmission spectrum diagram of a composite powder (f) in the present invention.

FIG. 7 is a transmission spectrum diagram of a composite powder (g) according to the present invention.

FIG. 8 is a transmission spectrum diagram of sericite powder.

FIG. 9 is a transmission spectrum diagram of a conventional infrared protective substance (talc powder).

FIG. 10 is a transmission spectrum diagram of a conventional infrared protective substance (metal aluminum powder).

FIG. 11 is a transmission spectrum diagram of a conventional infrared protective substance (zirconium oxide powder).

FIG. 12: Conventional infrared protective substance (fine particle titanium oxide)
FIG. 3 is a transmission spectrum diagram of FIG.

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A61K 7/42 A61K 7/00 A61K 7/02

Claims (8)

(57) [Claims] 1. A composite powder comprising at least two phases of a metal carbide and a metal nitride, and at least one of a coated composite powder having a coating layer on a surface of the composite powder. A cosmetic comprising: 2. A composite powder comprising at least two phases of a metal carbide and a metal nitride, comprising at least one of a composite powder having a coating layer on a surface thereof. Cosmetics characterized by the following. 3. The cosmetic according to claim 1, wherein said composite powder is a nanocomposite powder comprising a finely dispersed phase and a matrix phase in which said phase is dispersed. 4. The cosmetic according to claim 1, wherein said coating layer comprises at least one of a metal, a metal oxide and a composite oxide. 5. The composite powder and the coated composite powder have an average particle diameter of 0.01 to 40 μm and a maximum particle diameter of 100 μm.
The cosmetic according to claim 1, wherein: 6. One of the composite powder and the coated composite powder.
The cosmetic according to any one of claims 1 to 5, wherein 0.1 to 50% by weight of at least one kind is blended. 7. The method according to claim 1, wherein the metal carbide is at least one compound of W, Si or Ti and carbon.
The cosmetic according to any one of Items 1 to 6, above. 8. The cosmetic according to claim 1, wherein the metal nitride is at least one compound of W, Si or Ti and nitrogen.