JP2003012459A - Cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cosmetic having sufficiently high coloring power, capable of imparting the skin with bright texture of transparency feeling with slight light scattering, particularly when adjusted in skin color, giving a finish of slight glittering feeling with fine-textured bright skin color. SOLUTION: This cosmetic includes two kinds of plate-like color pigments each prepared by coating the surface of plate-like powder <2.0 in refractive index with powder >=2.0 in refractive index followed by a colorant; wherein the appearance color of one of the two kinds of color pigments represents 10P-5YR in hue in the Munsell system, and the other 5YR-10GY in hue.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic which imparts a transparent and bright natural skin color.

[0002]

2. Description of the Related Art Conventionally, as coloring pigments for cosmetics, inorganic pigments such as iron oxide pigments, navy blue, ultramarine blue, and chromium oxide, organic pigments such as red 201, yellow 401, blue 1, green 3 and the like. Etc. have been used. When these conventional coloring pigments are blended in cosmetics, particularly when a sufficient amount of coloring pigment is blended for coloring to the skin color, the light scattering of the coloring pigment may result in a dark finish without transparency. It was
Therefore, in order to achieve a bright finish, a pearl pigment such as titanium mica having a pearl luster obtained by coating a low refractive index material with a high refractive index material has been blended. However, when a pearlescent pigment having a pearly luster is blended with a cosmetic containing a coloring pigment, the reflected interference light of the pearlescent pigment is absorbed and scattered by the coloring pigment, and a sufficient effect cannot be obtained. On the contrary, when the amount of pearl pigment is increased until the effect of adding brightness to the finish can be realized, the difference in brightness between the angle at which the reflected interference light of the pearl pigment is observed and the angle at which the reflected interference light is not observed is observed. Tended to be large, and the result was an unnatural finish with a glaring feel. In addition, JP-A-8-81334 and JP-A-2000-1
6918 proposes colored mica titanium in which the colored pigment is directly coated on titanium in order to suppress absorption and scattering of light by the colored pigment itself. Even when these colored mica titanium is used as a coloring pigment for cosmetics, iron oxide pigment, titanium dioxide, titanium mica, etc. must be added in a large amount in order to adjust the skin color. It was insufficient to achieve a transparent and bright finish.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a cosmetic having a transparent and bright and natural finish.

[0004]

Means for Solving the Problems The present inventor has applied to the skin a cosmetic containing a plate-shaped coating powder having a different refractive index as a color pigment, and two kinds of yellow and red which are further coated with a coloring agent. Then, they found that a bright, natural finish with a transparent feeling was obtained. The present invention is a cosmetic containing two types of plate-like color pigments, in which the surface of a plate-like powder having a refractive index of less than 2.0 is coated with a powder having a refractive index of 2.0 or more and further coated with a colorant. Further, one of the plate-like color pigments has an appearance color of 10P to less than 5YR in the Munsell color system and the other has a hue of 5YR to 10GY.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION One of the plate-like color pigments used in the cosmetics of the present invention has an appearance color of 10P to less than 5YR in the Munsell color system, preferably 2.5R.
P to 2.5YR, particularly preferably 10RP to 10R, a red color pigment. The other plate-shaped color pigment of the present invention has an appearance color of 5YR to 10G in the Munsell color system.
Y, preferably 7.5YR to 10Y, particularly preferably 1
It is a yellow color pigment of 0YR to 7.5Y.

[0006] The refractive index of the plate-like powder as the base of the plate-like color pigment of the present invention is less than 2.0, preferably less than 1.8. Examples of the plate-like powder include mica, sericite, talc, plate-like alumina powder, plate-like silica, plate-like barium sulfate, etc., and mica is particularly preferable because it has high transparency and does not scatter reflected interference light. .

The refractive index of the powder (hereinafter referred to as the coated powder) for coating the plate-like powder which is the base of the plate-like color pigment of the present invention is 2.0 or more, preferably 2.2 or more. , Or a combination of two or more thereof may be used. Examples of the coated powder include titanium dioxide, zinc oxide, yellow iron oxide, red iron oxide, black iron oxide, chromium oxide, and the like, and at least containing titanium dioxide increases the refractive index of the coated powder, It is also preferable because it does not impair the tint of the colored plate pigment. Further, for the purpose of controlling the film thickness and / or crystal form of the coated powder, metal oxides such as iron oxide, aluminum oxide or tin oxide, metal hydroxides such as iron hydroxide and aluminum hydroxide, or gold, The plate-like powder serving as the base of the plate-like color pigment may be coated with a metal such as silver or aluminum or a salt such as an inorganic acid salt or an organic acid salt.

The surface of the plate-shaped coated powder is further covered with, for example, yellow iron oxide, red iron oxide, black iron oxide, dark blue, ultramarine blue, chromium oxide, tar pigments, natural pigments, etc. Cosmetic Engineers Association, Yakuji Nipposha) No. 330-
Coated with a colorant as described on page 387. In particular, it is preferable to use an inorganic coloring agent such as iron oxide, chromium oxide, and navy blue because it has excellent resistance to dissolution in water and oils and little discoloration during long-term storage. For example, as a colorant for a red plate-shaped coloring pigment having a hue of 10 P to less than 5 YR in the Munsell color system, it is preferable to include an inorganic red pigment, especially red iron oxide, because a natural skin color can be toned. Further, it is preferable that the yellow pigment of hues 5YR to 10GY in the other Munsell color system contains an inorganic yellow pigment, particularly yellow iron oxide. Examples of the method of coating the plate-shaped coating powder with these colorants include a method of attaching by a chemical reaction and a method of physically attaching by a mechanical impact force. When the coating amount of the colorant is 1 to 20 parts by weight with respect to the plate-like color pigment,
It is preferable because it has sufficient coloring power and the reflected interference light is not weakened.

The plate-like color pigment of the present invention may have its surface further hydrophobized. As the hydrophobizing agent, a compound generally used for hydrophobizing powders, such as silicone oil, fatty acid metal salt, alkylphosphoric acid, alkali metal salt of alkylphosphoric acid or amine salt, N
-Mono long-chain (8 to 22 carbon atoms) aliphatic acyl basic amino acids, fluorine compounds having a perfluoroalkyl group, and the like can be used.

The average particle diameter of the plate-like color pigment is 1 to 40 μm in that visible light is scattered and the color becomes dull and dark, the transparency is not impaired, and glare is not generated due to a large amount of surface reflected light.
m, preferably 2 to 30 μm. Here, the average particle size is laser diffraction / scattering particle size distribution LA manufactured by Horiba Ltd.
-920 was measured using ethanol as a dispersion medium.

The compounding amount of the plate-like color pigment in the cosmetic is 5 to 50% by weight, preferably 10 to 30% by weight, in total of two kinds of hues 10P to less than 5YR and hues 5YR to 10GY. Further, the mixing ratio of the two types of plate-like color pigments is not particularly limited, but when the hue of the cosmetic is adjusted to be in the range of 2.5R to 10Y and the lightness is 3 or more in the Munsell color system, a bright skin color is obtained. It is particularly preferable because a finish can be obtained.

The cosmetic of the present invention is a component which is used as a general component in other cosmetics, such as a surfactant, a polymer compound, an oil component, another powder, a humectant, a preservative, a drug, an ultraviolet absorber. , Antioxidants, inorganic or organic acid salts, fragrances,
A chelating agent, a pH adjusting agent, water and the like can be appropriately added. Specific examples of the cosmetics of the present invention include foundation, white powder, concealer, blusher, eye shadow, eyebrow, and the like, but the cosmetics that are easy to exert the effect on the finish having a transparent and bright skin color. Particularly preferred is a foundation, white powder, or concealer.

[0013]

EXAMPLE As for the side color of the appearance color, a press-moldable sample was filled and molded in a gold plate, and a non-press-moldable or liquid sample was filled in a liquid / powder cell to prepare a sample. In addition, a color measuring device (manufactured by JEOL Ltd .: SQ-3)
00H) was used. The average particle size is obtained by dispersing the sample in ethanol and measuring the laser diffraction / scattering type particle size distribution LA-9.
20 (manufactured by Horiba, Ltd.).

Production Example of Plate-like Colored Pigment Production Example 1 75 parts by weight of mica was added to 500 parts by weight of ion-exchanged water and stirred to obtain a uniform dispersion liquid. To this dispersion was added 250 parts by weight of a 30% by weight aqueous solution of titanyl sulfate,
Boil for 4 hours with stirring. After standing to cool, it was filtered, washed with water, and baked at 950 ° C. to obtain 100 parts by weight of titanium dioxide-coated mica (titanium mica). Separately, 60 parts by weight of ferric sulfate nonahydrate was dissolved in 2000 parts by weight of ion-exchanged water, and this was adjusted to pH 2.8 with a 0.1 mol / L sodium hydroxide aqueous solution. To this aqueous solution, add 100 parts by weight of titanium mica produced in,
Stir well and disperse evenly. While stirring the titanium mica titanium dispersion of Example 1, the mixture was boiled for 6 hours. After standing to cool, it was filtered and washed with water to obtain 103 parts by weight of yellow iron oxide-coated mica titanium (yellow colored mica titanium). The average particle size of the obtained yellow colored mica titanium (plate colored pigment) was 8.2 μm. The appearance color was 4.8Y and the brightness was 7.5 in the Munsell color system.

Production Example 2 60 parts by weight of ferric sulfate nonahydrate was deionized water 2000
It was dissolved in 1 part by weight, and this was adjusted to pH 2.8 with a 0.1 mol / L sodium hydroxide aqueous solution. In this aqueous solution, ENGE
LHARD Mica Titanium (FLAMENCO SATIN RED 460M) 10
0 parts by weight was added, and the mixture was sufficiently stirred to be uniformly dispersed.
Furthermore, the titanium mica dispersion liquid was boiled for 6 hours while stirring. After allowing to cool, it was filtered, washed with water, and calcined at 800 ° C. for 2 hours to obtain 102 parts by weight of red iron oxide-coated mica titanium (red colored mica titanium). The obtained red colored mica titanium (plate-like colored pigment) had an average particle size of 7.3 μm.
The appearance color was 8.5R and the brightness was 5.3 in the Munsell color system.

Production Example 3 50 parts by weight of sericite was added to 500 parts by weight of ion-exchanged water and stirred to obtain a uniform dispersion liquid. 300 parts by weight of an aqueous titanyl sulfate solution having a concentration of 30% by weight was added to this dispersion, and the mixture was boiled for 4 hours while stirring. After allowing to cool, it was filtered, washed with water, and baked at 950 ° C. to obtain 100 parts by weight of titanium dioxide-coated sericite (titanium titanate). Separately, 60 parts by weight of ferric sulfate nonahydrate was dissolved in 2000 parts by weight of ion-exchanged water, and this was adjusted to pH 2.8 with a 0.1 mol / L sodium hydroxide aqueous solution. To this aqueous solution, add 100 parts by weight of titanium mica synthesized in
Stir well and disperse evenly. This sericite titanium dispersion of was heated with stirring and boiled for 6 hours. After standing to cool, filter and wash with water, 8
It was calcined at 00 ° C. for 2 hours to obtain 103 parts by weight of red iron oxide-coated sericite titanium (red colored sericite titanium). The average particle size of the obtained red colored sericite titanium (plate-like colored pigment) was 11.2 μm. The appearance color was 6.8R and the lightness was 4.7 in the Munsell color system.

Production Example 4 An aqueous solution obtained by dissolving 2.5 parts by weight of sodium ferrocyanide and 1.2 parts by weight of ferrous sulfate in 1000 parts by weight of ion-exchanged water was added to a mica titanium (FLA manufactured by ENGELHARD).
100 parts by weight of MENCO SATIN BLUE 660M) was added and sufficiently stirred to uniformly disperse. While stirring the mica titanium dispersion of Example 1, an aqueous solution prepared by dissolving 1.0 part by weight of ammonium sulfate in 50 parts by weight of ion-exchanged water and 0.5 part by weight of concentrated sulfuric acid were added and aged. Furthermore, 0.15 parts by weight of sodium chlorate is added to 50 parts of ion-exchanged water.
An aqueous solution dissolved in 1 part by weight was added, washed with water, filtered, and dried to obtain 101 parts by weight of blue-colored mica titanium coated with dark blue. The appearance color was 6.8 PB and the lightness was 4.7 in the Munsell color system.

Example 1 A solid foundation having the composition shown in Table 1 was prepared using the plate-like color pigments of Production Examples 1 to 4.

[0019]

[Table 1]

Each of the foundations shown in Table 1 was used by 20 panelists dedicated to cosmetics, and the following criteria were used to evaluate "transparent finish", "bright finish", "less glare", "natural skin color". The result of evaluation of "is evaluated according to the judgment standard, and the average value of the evaluation reference points and the colorimetric value of the appearance color are shown in Table 1. Evaluation criteria 5 points: Very good 4 points: Good 3 points: Normal 2 points: Slightly bad 1 point: Poor

The solid powder foundations of the products 1 to 3 of the present invention have a transparent and natural skin color with a bright finish,
There was very little glare. In contrast,
The foundation of Comparative Product 1 colored with only the conventional coloring pigment had no glare, but the coloring pigment scattered visible light, resulting in a dark and heavy impression without transparency. Comparative product 2 containing mica titanium
Gave a bright finish, but it had a dull finish due to its unnatural luster, and the texture of the skin was also noticeable. Comparative product 3 containing one commercially available colored mica titanium,
No. 4 has less glare, but since visible light is scattered by the coloring pigment, it is inferior to the products 1 to 3 of the present invention in "transparent finish", "bright finish", and "natural skin color". It was In Comparative Examples 5 and 6 containing only one type of colored mica titanium of Production Example 1 or 2, the skin was unnatural due to the color of the reflected interference light unique to the colored mica titanium. Comparative product 7, which uses two colors of commercially available colored mica titanium, must be blended with a large amount of colored mica titanium in order to adjust the skin color, and although a "bright finish" can be obtained, it is unnatural glare. It was inferior to the products 1 to 3 of the present invention in "transparent finish" and "natural skin color".

Example 2 Creamy foundation (formulation) (% by weight) Stearic acid 5.5 Lipophilic glyceryl monostearate 2.5 Cetostearyl alcohol 1.0 Monolauryl propylene glycol 3.0 Squalane 7.0 Olive oil 8 0.0 Paraben 0.2 Triethanolamine 1.2 Solbit 3.0 Titanium dioxide ^{* 1} 10.0 Talc 5.0 Production Example 1 Yellow colored mica titanium ^{* 1} 5.0 Production example 2 Red colored mica titanium ^{* 1} 2. 0 Production Example 1 Blue colored mica titanium ^{* 1} 0.5 Iron oxide (red, yellow, black) ^{* 1} 2.0 Perfume A suitable amount of purified water Total residual amount 100 * 1) Perfluoroalkylethyl phosphate diethanolamine (AG530, Asahi Glass Co., Ltd. 5 parts by weight for 100 parts by weight of powder

Example 3 Liquid foundation (compounding formulation) (% by weight) Titanium dioxide ^{* 2} 1.0 Iron oxide (red, yellow, black) ^{* 2} 1.0 Polymethylsilsesquioxane powder 4.0 Production example 1 Yellow colored mica titanium ^{* 2} 5.0 Production example 2 Red colored mica titanium ^{* 2} 2.0 Octamethylcyclotetrasiloxane 20.0 Dimethylpolysiloxane 10.0 Dimethylpolysiloxane / polyoxyalkylene copolymer 1.0 Glycerin 2 0.0 Purified water Total 100 * 2) Dimethyl hydrogen polysiloxane treatment

[0024] Example 4 Loose powder foundation (Compound formulation) (wt%) Talc 20.0 Remaining amount of mica Spherical PMMA 15.0 Production Example 1 Yellow colored mica titanium 10.0 Production Example 3 Red-colored sericite titanium 4.0 Mica titanium (average particle size: 5.5μm, white interference color system) 5.0 Titanium dioxide 3.0 Yellow iron oxide 2.0 Red iron oxide 0.5 Black iron oxide 0.3 Dimethyl polysiloxane 5.0

Example 5 White powder (compounding formulation) (% by weight) Sericite Remaining amount Nε-lauroyl-L-lysine powder 15.0 Spherical polystyrene powder 10.0 Plate barium sulfate 20.0 Magnesium stearate 10.0 Titanium dioxide 1.0 Production example 1 Yellow-colored mica titanium ^{* 3} 4.0 Production example 2 Red-colored mica titanium ^{* 3} 2.0 Dark blue ^{* 3} 0.02 Total 100 * 3) Nε-lauroyl-L-lysine treatment

[0026] Example 6 Solid white powder (Compound formulation) (wt%) Remaining amount of mica Talc 15.0 Production Example 1 Yellow colored mica titanium 5.0 Production Example 2 Red colored mica titanium 2.0 Mica titanium (average particle size: 45 μm, white interference color system) 20.0 Zinc oxide 5.0 Titanium dioxide 2.0 Ultramarine 0.03 Liquid paraffin 8.0 Beeswax 2.0 Paraben 0.2 Fragrance suitable amount Total 100

[0027] Example 7 O / W cream (Compound formulation) (wt%) Beeswax 5.5 Cetanol 4.5 Hydrogenated Lanolin 7.0 Squalane 33.0 Fatty acid glycerin 3.5 Lipophilic type glyceryl monostearate 2.0 Polyoxyethylene (20) sorbitan monolaurate 1.0 Production Example 1 Yellow colored mica titanium 1.0 Production Example 2 Red colored mica titanium 2.0 Paraben 0.2 Antioxidant 0.1 Propylene glycol 10.0 Fragrance suitable amount Purified water Remaining amount Total 100

All of the cosmetics obtained in Examples 2 to 7 did not give a glaring feeling, and produced a transparent and bright finish.

[0029]

The cosmetics of the present invention have sufficient coloring power, little light scattering, and can impart a transparent and bright texture. Especially, when the skin color is adjusted, a fine and bright skin color is obtained. In addition, it is possible to give a finish with less glare.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4C083 AA122 AB052 AB082 AB212                       AB232 AB242 AB432 AC022                       AC072 AC122 AC132 AC242                       AC392 AC422 AC442 AC482                       AC542 AC662 AC902 AD022                       AD072 AD092 AD152 AD162                       AD172 AD512 BB25 BB26                       CC12 DD17 DD21 DD23 DD31                       DD33 EE06 EE07

Claims (4)

[Claims] 1. A surface of a plate-like powder having a refractive index of less than 2.0,
What is claimed is: 1. A cosmetic comprising two kinds of plate-shaped color pigments coated with a powder having a refractive index of 2.0 or more and further coated with a colorant, wherein one appearance color of the plate-shaped color pigment is Munsell color system. Is less than 10P to 5YR, and the other is 5YR to 1
Cosmetics that are 0GY. 2. The cosmetic according to claim 1, wherein the coverage of the colorant is 1 to 20% by weight based on the plate-shaped color pigment. 3. The cosmetic according to claim 1 or 2, wherein the cosmetic has an appearance color of 2.5R to 10Y as hue and a lightness of 3 or more in Munsell color system. 4. The cosmetic according to claim 1, wherein the cosmetic is a foundation.