JP3508031B2 - Composite pigment and cosmetic containing the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a synthetic mica obtained by intercalating talc with potassium silicofluoride and / or potassium fluoride, which is coated with an organic coloring pigment, is excellent in saturation and coloring, and The present invention relates to a uniformly coated composite pigment and a cosmetic composition containing the same.

[0002]

2. Description of the Related Art Conventionally, various kinds of pigments have been used in cosmetics depending on the purpose, use, dosage form, cosmetic effect and the like. At the time of dispersing these pigments, as means for obtaining a dispersion system having high saturation, fine particles of the pigment, improvement of dispersibility by surface treatment or mechanical force, or combination of a color pigment and an extender pigment has been tried. There is.

[0003]

However, the conventional composite pigments cannot obtain the saturation and color development of the original color pigments, and it is necessary to add a large amount of composite pigments to the products in order to compensate for these drawbacks. However, as a result, there was a problem in terms of quality and sensory characteristics. Further, when a large amount of color pigments are combined, color saturation can be obtained but color separation occurs over time. Furthermore, a complex manufacturing process may be required for compounding. Therefore, it has been desired to develop a pigment that is stable over time without impairing saturation and color development.

[0004]

In view of the above circumstances, the present inventors have earnestly studied, and as a result, not only the above problems can be solved by combining a specific synthetic mica and an organic coloring pigment, It has been found that a highly saturated composite pigment can be obtained even when the coating amount of the pigment is small, and the present invention has been completed.
That is, in the present invention, talc contains potassium silicofluoride and / or
Alternatively, the present invention provides a composite pigment in which the surface of a synthetic mica produced by intercalating potassium fluoride is coated with an organic coloring pigment, and a cosmetic containing the same. Less than,
The details will be described.

The synthetic mica used in the present invention is disclosed in Japanese Patent Application Laid-Open No. Hei 2
It can be manufactured according to the method described in No. 149415. That is, talc and potassium silicofluoride and /
Alternatively, it is produced by an intercalation method using potassium fluoride as a starting material. Here, the intercalation method is a phenomenon in which various ions penetrate between layers of a crystal having a layered structure, and the synthetic mica used in the present invention intercalates potassium ions between layers of talc which is a layered substance. It is obtained by doing.

Specifically, it is obtained by heat-treating potassium silicofluoride and / or a mixed powder of potassium fluoride and talc. The talc used here may be any talc as long as it is blended with general cosmetics, and the average particle size and shape are not particularly limited. The amount of potassium silicofluoride added is 10 to 35% by weight (hereinafter, simply abbreviated as “%”), preferably 15 to 30%, and if the amount is outside this range, the production rate of synthetic mica decreases. Heating is 700-1
It is carried out at 200 ° C., preferably 900 ° C. or higher for about 1 hour. If the heating temperature exceeds 1200 ° C., the synthetic mica sinters, and pulverization is necessary after manufacturing.

Further, part of potassium silicofluoride can be replaced with potassium fluoride for use. In this case, the proportion of potassium silicofluoride in the total amount of both should be 25% or more, preferably 50%.
% Or more. The heating temperature is preferably 850 to 1100 ° C.

Among the synthetic mica obtained as described above, those used for the composite pigment of the present invention have an average particle size of 3 to 50.
μm. When it is smaller than 3 μm, it becomes difficult to form a composite with an organic color pigment, and when it is larger than 50 μm, it is rough and becomes a problem in terms of sensory characteristics. More preferably 10
It is 25 μm, and the effect of the present invention becomes more remarkable when a synthetic mica in this range is used.

The pigment coated on the surface of the synthetic mica includes
Organic color pigments are used. Organic coloring pigments
Good color. Organic color pigments include, for example, Red No. 202,
Red 204, Red 219, Red 220, Red 22
No. 6, Red No. 404, Yellow No. 205, Yellow No. 401, Blue No. 404, Orange No. 203, Orange No. 204, etc., and Red No. 104, Yellow No. 4, Yellow No. 5, Blue No. 1
A lake in which a dye such as No. 2 or Blue No. 2 is an insoluble pigment made of calcium, barium, aluminum or the like may be used. These pigments can be appropriately selected or used in combination depending on the purpose.

The coating amount of the above-mentioned organic color pigment is not particularly limited, but the composite pigment of the present invention can obtain high chroma and color development even with a small coating amount, so 0.001 to 2% is more preferable.

As the method for producing the composite pigment of the present invention, for example, a method in which a synthetic mica and an organic coloring pigment are physically mixed by using a ball mill, a jet mill, a high speed stirring mill, a high speed impact mill, etc. Can be mentioned. In particular, formation of composite particles based on ordered mixture by high-speed stirring treatment is desirable, and it is desirable to use a hybridizer, mechanofusion, high-speed blender mixer or the like.

The above-mentioned composite pigment can be blended into cosmetics in general, for example, makeup such as foundation, white powder, base cosmetics, blusher, eye shadow, lipstick, eyeliner, mascara, nail enamel, emulsion and cream. Can be incorporated into the ingredients. The amount of the cosmetic compounded is not particularly limited,
Preferably 0.1-99%, more preferably 1-80%
Is.

Further, in the cosmetics containing the composite pigment of the present invention, an aqueous component, an oily component and a powder component which are usually used as a raw material for cosmetics, such as a moisturizing agent, a preservative, an antioxidant and an ultraviolet absorbing agent. Agents, beauty ingredients, fragrances, water-soluble polymers, extender pigments, coloring pigments, bright pigments, organic powders, and water- and oil-repellent treated pigments thereof may be added within a range that does not impair the effects of the present invention. it can.

[0014]

EXAMPLES The present invention will be described in more detail below with reference to examples, but the present invention is not limited thereto. A composite pigment was manufactured using the following two manufacturing methods.

Manufacturing Method 1 A powder having the composition shown in Table 1 below and a powder having a volume of 1200 ml were mixed in a high speed blender mixer (manufactured by Waring Co.).
Examples 1 to 3 by adding a machine coloring pigment and mixing and stirring at a stirring energy of 84.2 kJ and a stirring speed of 70 m / s in peripheral speed.
And the composite pigments of Comparative Examples 1-3 were obtained.

[0016]

[Table 1]

Manufacturing method 2 Henschel mixer with a volume of 9 L (Mitsui Miike Kakoki Co., Ltd.)
The powders and organic color pigments having the compositions shown in Table 2 below were added and mixed and stirred for 30 minutes at a stirring speed of a peripheral speed of 35 m / s to obtain composite pigments of Examples 4 to 7 and Comparative Examples 4 to 7. .

[0018]

[Table 2]

Example 1 obtained by each manufacturing method
7 to 7 and the composite pigments of Comparative Examples 1 to 7 were subjected to evaluation tests regarding color development, pigment dispersibility and pigment adhesion.

1. Chromaticity test A composite color pigment was filled in a glass cell for a color difference meter in an amount of 2 g and tapped 50 times to obtain a measurement sample. The spectroscopic color difference meter SZ-
Hunter L. Σ90 (manufactured by Nippon Denshoku Co., Ltd.) a. b.
(45 ° / 0 ° measurement angle) was measured. The degree of color development was calculated from the measured value by the following formula (1). The higher the degree of color development, the more effective the color of the composite pigment.

[0021]

[Formula 1]

2. Pigment dispersibility test Take a small amount of composite pigment on a slide glass, drop one drop of purified water on a cover glass, and use an optical microscope (magnification:
The presence or absence of cohesiveness of the pigment particles was observed by 200 to 400 times). The evaluation criteria are shown below. (Evaluation Criteria) O: No aggregation of the pigment is observed, and the pigment is uniformly dispersed. Δ: Some pigment aggregation is observed, and dispersion is not uniform. X: The pigment is poorly dispersed and aggregated.

3. Pigment adhesion test 2.5 g of composite pigment and 47.5 g of liquid paraffin were mixed and dispersed by a Dispers mill at 2000 rpm for 2 minutes and subjected to centrifugal separation treatment (10000 rpm, 10 minutes). Further, the precipitate was observed and evaluated by an optical microscope (magnification: 200 to 400 times). The evaluation criteria are shown below. (Evaluation Criteria) ◯: The supernatant liquid is transparent, and aggregation of the pigment in the precipitate is not recognized. Good adhesion. Δ: The pigment is slightly dispersed in the supernatant liquid, and the aggregation of the pigment in the precipitate is slightly observed. Adhesion condition Somewhat bad. X: The pigment is clearly dispersed in the supernatant, and aggregation of the pigment in the precipitate is recognized. Poor adhesion. The results obtained by the above evaluation tests are shown in Tables 1 and 2.

As is clear from the results shown in Tables 1 and 2,
The composite particles according to the present invention exhibited a high hue and a saturated hue in any of the production methods, the pigment was uniformly dispersed on the powder, and the adhesion of the pigment was excellent. As a result, when the present composite pigment is used as a raw material for cosmetics, it exhibits excellent effects such as improved saturation, prevention of white blur, and good appearance of the pigment due to good dispersibility of the pigment and lack of a gap between applied colors. be able to.

Next, powder foundations having the compositions shown in Table 3 were produced using the composite pigments of Examples 1 to 3 and Comparative Examples 1 to 3, and sensory evaluation, press moldability test and caking test were conducted.

[0026]

[Table 3]

(Production method) Components 1 to 12 were mixed with a Henschel mixer, and a mixture of components 13 to 18 heated and dissolved was added to the mixture and pulverized.
The powder foundation was obtained by filling and molding with a press pressure of m 2.

(Evaluation method) 1. Sensory evaluation Using 20 panelists, a sensory evaluation was conducted on the goodness of color development when using the above powder foundation, the beauty of the finished film, the lack of a gap between the appearance and the applied color, and the lack of whiteness of the bottom color. It was judged according to the following criteria based on the average score of the graded evaluation. (Evaluation criteria) 5 points: Very good 4 points: Good 3 points: Normal 2 points: Slightly bad 1 point: Bad (criteria) ◎: 4.5 points or more ○: 4.0 points or more and less than 4.5 points △: 3.0 points or more and less than 4.0 points x: less than 3.0 points

2. Press moldability test The press moldability was evaluated by measuring the penetration hardness. A constant pressure load hardness meter (manufactured by Maruhishi Kagaku Kikai Seisakusho) was used for the measurement. The smaller the value, the worse the press formability.

3. Caking test Molded foundation is applied 10 times in the same direction,
The caking state of the surface when repeatedly rubbed a total of 80 times was observed and judged according to the following criteria. (Criteria) O: No change is observed. Δ: The surface is slightly solidified and a caking tendency is observed. X: The surface is clearly solidified and caked. The results obtained by each evaluation method are shown in Table 4.

[0031]

[Table 4]

As is clear from the above results, the foundation according to the present invention showed good results in all items of sensory evaluation, was excellent in moldability during pressing, and was excellent in that caking did not occur.

[0033]

(Manufacturing Method) Components 1 to 4 were mixed with a Henschel mixer, and a mixture obtained by heating and dissolving components 5 to 8 was added and mixed, pulverized, and press-molded in a gold plate to obtain white powder. In Example 11, there was no gap between the appearance color and the coloring color, and the white powder had good color development.

[0035]

(Production Method) Components 1 to 8 were mixed and then pulverized to obtain white powder. Example 12 was white powder with good color development.

[0037]   Example 13 Cheek color   (Component) (%)   1. Composite pigment (Example 4) 20.0   2. Composite pigment (Example 5) 30.0   3. Composite pigment (Example 7) 25.0   4. Mica titanium 5.0   5. Nylon powder 5.0   6. Remaining amount of silica   7. Liquid paraffin 7.0   8. Tri-2-ethylhexanoic acid glyceride 3.0   9. Preservative Suitable amount 10. Fragrance suitable amount

(Manufacturing Method) Components 1 to 6 were mixed in a Henschel mixer, and a mixture of components 7 to 10 heated and dissolved was added and mixed, pulverized, and press-molded in a gold plate to obtain a cheek color. Example 13 was a cheek color having high saturation and having no gap between the appearance color and the coloring color.

[0039]

(Manufacturing Method) Components 1 to 4 were mixed with a Henschel mixer, and a mixture obtained by heating and dissolving components 5 to 8 was added and mixed, pulverized, and press-molded in a metal plate to obtain an eye color. Example 14 was an eye color having high saturation and having no gap between the appearance color and the coloring color.

[0041]

(Manufacturing Method) A: Components 1 to 5 are mixed. B: A is added to a mixture of components 6 to 12 heated and kneaded with a roller. C: B was melt-filled in a container and cooled and solidified to obtain an oily compact foundation. Example 15 was an oily compact foundation having high saturation, having no gap between the appearance color and the applied color, and having an excellent natural finish with no whiteness of the bottom color.

[0043]   Example 16 Emulsion (O / W) type foundation   (Component) (%)   1. Stearic acid 1.5   2. Cetanol 1.0   3. Monooleic acid polyoxyethylene       Sorbitan (20EO) 1.0   4. Sorbitan sesquioleate 1.0   5. Liquid paraffin 15.0   6. Glycerin 5.0   7.1,3-butylene glycol 5.0   8. Carboxy vinyl polymer 0.1   9. Carrageenan 0.05 10. Triethanolamine 0.8 11. Preservative Suitable amount 12. Purified water Remaining amount 13. Titanium oxide 7.0 14. Composite Pigment (Example 3) 6.0 15. Bengal 0.2 16. Yellow iron oxide 0.8 17. Black iron oxide 0.05 18. Fragrance suitable amount

(Production Method) A: Components 1 to 5 are dissolved by heating. B: Components 6 to 12 are heated and dissolved, added to A, emulsified and mixed, and then cooled. A mixture of C: B with components 13 to 17 and component 18 were added and mixed to obtain an emulsified (O / W) type foundation. Example 16 was an emulsified (O / W) type foundation with good color development and excellent natural finish with no gap between appearance and coloring.

[0045]   Example 17 Two-layer foundation   (Component) (%)   1. Dimethyl siloxane / methyl (polyoxyethylene)       Siloxane copolymer 2.0   2. Methyl tetracyclosiloxane 10.0   3. Tri-2-ethylhexanoic acid glyceride 5.0   4. Liquid paraffin 3.0   5. Dimethyl polysiloxane 3.0   6. Sorbitan sesquioleate 0.1   7. Trioleic acid polyoxyethylene       Sorbitan (20EO) 0.1   8. Ethanol 10.0   9.1,3-butylene glycol 5.0 10. Glycerin 5.0 11. Purified water Remaining amount 12. Composite Pigment (Example 3) 8.0 13. Titanium oxide 7.0 14. Red iron oxide 0.15 15. Yellow iron oxide 1.5 16. Black iron oxide 0.2 17. Fragrance suitable amount

(Production Method) A: Components 1 to 7 are mixed and dissolved. B: Components 8 to 11 are mixed and dissolved, added to A, and emulsified. A mixture of C: B with components 12 to 16 and component 17 were added and mixed to obtain a two-layer foundation. Example 17 was a two-layer type foundation excellent in natural finish with no gap between appearance color and coloring color.

[0047]   Example 18 Lipstick   (Component) (%)   1. Polyisobutylene 5.0   2. Ceresin wax 10.0   3. Candelilla Row 5.0   4. Carnauba Row 5.0   5. Glyceryl tri-2-ethylhexanoate 20.0   6. Diglycerin triisostearate 20.0   7. Vaseline 5.0   8. Castor oil remaining   9. Composite Pigment (Example 4) 7.0 10. Composite pigment (Example 5) 3.0 11. Titanium oxide 0.5 12. Fragrance suitable amount

(Production Method) A: Components 1 to 8 are heated and dissolved. B: Components 9 to 11 are added to A and mixed, and kneaded with a roller. C: B was melted by heating, component 12 was added and mixed, filled in a container and cooled to obtain a lipstick. Example 18 was a lipstick with high saturation and a natural color.

[0049]

(Manufacturing Method) After components 1 to 10 were thoroughly mixed, components 11 to 12 were added and mixed to obtain a nail polish. Example 19 has good color development,
It was a nail polish that formed a uniform film.

[0051]   Example 20 Emulsion   (Component) (%)   1. Stearic acid 1.0   2. Cetanol 0.5   3. Monooleic acid polyoxyethylene       Sorbitan (20EO) 0.5   4. Sorbitan sesquioleate 0.5   5. Liquid paraffin 5.0   6. Glyceryl tri-2-ethylhexanoate 3.0   7.1,3-butylene glycol 10.0   8. Glycerin 5.0   9. Carboxy vinyl polymer 0.2 10. Triethanolamine 0.5 11. Preservative Suitable amount 12. Purified water Remaining amount 13. Composite pigment (Example 4) 0.5 14. Composite pigment (Example 7) 1.5 15. Suitable amount of fragrance

(Production Method) A: Components 1 to 6 are heated and mixed. B: Components 7 to 12 are heated and mixed, added to A, emulsified and mixed, and then cooled. Components 13 to 15 were added to and mixed with C: B to obtain an emulsion. Example 20 was an emulsion having good color development, no aggregation of pigment, and a uniform finished film.

[0053]

As described above, the synthetic mica produced by the intercalation method according to the present invention and the organic coating
A composite pigment composed of a color pigment has high saturation and good color development, and is an excellent cosmetic raw material in which the pigments are uniformly composited. Furthermore, cosmetics containing this composite pigment are
It is excellent in color development and high saturation, and has a natural finish with no gap between appearance color and coloring.

─────────────────────────────────────────────────── --- Continuation of the front page (56) Reference JP-A-7-150071 (JP, A) JP-A-4-368316 (JP, A) JP-A-6-48913 (JP, A) JP-A-63- 152671 (JP, A) JP 62-101664 (JP, A) JP 63-254169 (JP, A) JP 56-110768 (JP, A) JP 56-141362 (JP, A) JP 63-243168 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A61K ^7/ 00-7/50

Claims (4)

(57) [Claims] 1. An average particle size of 3 obtained by intercalating talc with potassium silicofluoride and / or potassium fluoride.
A composite pigment characterized in that the surface of a synthetic mica having a size of ˜50 μm is coated with an organic coloring pigment. 2. The composite pigment according to claim 1, wherein the synthetic mica has an average particle size of 10 to 25 μm. 3. A composite pigment according to claim 1 or 2 coating amount of the organic coloring pigment is characterized by a 0.001 wt%. 4. A cosmetic comprising the composite pigment according to any one of claims 1 to 3 .