JP2001010929A - Composite powder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite powder that imparts, to the skin, natural finish with transparency of some extent close to bare skin, as the defects of the skin are covered, when it is formulated to make-up cosmetics, and further can enjoy a variety of feel or touch and make-up effects. SOLUTION: A flaky powder, for example, talc, mica, sericite or the like is used as a substrate, coated with a colored spherical resin particles prepared by admixing an organic colorant or an inorganic pigment to a resin, for example, acrylic resin, nylon resin, styrene resin, silicone resin or the like to prepare a composite powder of colored spherical resin particles. The weight ratio of the flaky powder to the colored spherical resin powder is 95/5-40/60.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite powder, and in particular, can provide a natural finish with a gloss and transparency close to the bare skin while covering a skin defect when incorporated into a makeup cosmetic, and The present invention relates to a composite powder capable of enjoying various textures and makeup effects.

[0002]

2. Description of the Related Art Conventionally, in makeup cosmetics,
As a means for covering a skin defect, a refractive index of 2.5 to 2.
In No. 7, titanium oxide having an average particle diameter of about 0.2 μm has been mainly compounded. However, when applied to the skin, the finished product can cover the skin defect, but has a defect that the skin has an unnatural feeling due to a large difference from the skin refractive index (1.57). Therefore, a method of reducing the amount of the titanium oxide has been adopted. On the other hand, as means for enjoying the makeup effect, a color effect has been obtained by using an inorganic pigment or an organic dye, and a texture effect has been imparted by additionally using interference light of a pearl agent.

[0003]

However, as a result, although the finished cosmetic skin can be improved in a more natural direction, it is difficult to obtain a uniform finish due to the strong cohesiveness of the titanium oxide. In the method (1), there is a problem that the covering power is lowered and the skin defect becomes conspicuous. That is, in the prior art, covering the defects of the skin and providing natural makeup skin are contradictory events. Recently, powders have been developed with a focus on the structure of skin tissue in order to obtain a finish close to the actual bare skin.However, there is a limit to imitating complex skin tissue, The makeup cosmetic containing the body was practically almost the same as the finish of the normal makeup cosmetic. Therefore, there is a strong demand for the development of a powder component that covers the defects of the skin and has a natural finish close to the bare skin. The present invention has been made in order to solve such conventional problems, and when applied to the skin, a powder component that provides a natural finish close to the bare skin while covering the skin defects, and the powder thereof. An object of the present invention is to provide a makeup cosmetic containing components.
It is another object of the present invention to provide a makeup cosmetic that can enjoy a color or texture makeup effect that has not existed in the past.

[0004]

Means for Solving the Problems The present inventors have conducted intensive studies in view of the above points, and as a result, have found that the surface of a flaky powder is coated with a specific amount of fine particles composed of one or more kinds of colored spherical resin powders. The present inventors have found that, when the compound powder is blended as a powder component of a makeup cosmetic, it can provide natural makeup skin while covering skin defects, and have completed the present invention.

That is, the present invention relates to a composite powder comprising a flaky powder as a substrate and a colored spherical resin powder coated on the surface thereof, wherein the composition ratio (weight by weight) of the flaky powder and the colored spherical resin powder is Ratio): flaky powder: colored spherical resin powder = 95: 5 to 40:60.

Attempts to coat pigments with resins have been to mechanically reinforce pearl pigments (JP-A-52-93440).
No. 5) and controlling the gloss of extenders selected from talc, kaolin, mica, and sericite (Japanese Patent Publication No.
No. -76444) has already been performed. However, focusing on the excellent optical properties of the colored spherical resin powder as in the present invention, by coating this colored spherical resin powder on a flaky powder, the strong light scattering ability or the spectral reflection characteristic of the colored spherical resin powder can be obtained. The composite powder of the present invention, which is made into a composite powder (coated pigment) having unprecedented optical properties by combining the properties of flaky powder and more effective, is unprecedented and has been found for the first time. It is a thing.

[0007] Ordinary spherical resin powder is talc, kaolin,
With a coated pigment coated on a flaky powder, which is an extender pigment such as mica or sericite, natural makeup skin can be obtained, but light scattering ability and light absorption ability are inferior, and as a result, skin defects can not be covered. Have difficulty. However, in the present invention, since the spherical resin powder to be coated is colored with an organic dye or an inorganic pigment, the light scattering ability or the light absorbing ability is higher than that of the conventional spherical resin powder, and covers the skin defect. be able to. Further, since the spherical resin powder to be coated is colored with an organic dye or an inorganic pigment, various types of textures and different makeup effects can be provided by changing the type of the substrate. However, when the colored spherical resin powder alone is blended into a cosmetic, the adhesion to the skin is poor, and the above effects are reduced. Therefore, by coating the flaky powder as a base material, the adhesion to the skin is enhanced, and the synergistic effect with the optical characteristics of the substrate enables natural makeup skin and various makeup effects while covering the defects of the skin. Obtainable. Furthermore, the composite powder of the present invention is smooth on the skin and feels good to use, and has excellent properties.

Hereinafter, the configuration of the present invention will be described in detail. Flaky powder used in the composite powder of the present invention is, for example, talc, mica, sericite, barium sulfate, alumina, boron nitride, synthetic mica, synthetic talc, zinc oxide, silica, mica titanium, lauroyl lysine and iron oxide coating They are selected from the group consisting of mica, and are used as one kind or as a mixture of two or more kinds.

These flaky powders have an average particle diameter of 1 to 8
Those having a range of 0 μm are desirable. Average particle size is 80 μm
If it exceeds, powdery texture will be felt. On the other hand, when the thickness is less than 1 μm, the coating of the resin powder on the surface of the substrate is incomplete, and it becomes difficult to obtain the desired optical characteristics, which is not preferable.

Next, as the colored spherical resin powder which is a coating material of the flaky powder, for example, an acrylic resin, a nylon resin, a styrene resin, a silicone resin or a copolymer resin thereof containing a coloring pigment is used. Can be
Of these, acrylic resins are particularly preferred, and colored spherical fine particles of polymethyl methacrylate are particularly preferred.
The shape of the resin must be spherical in order to uniformly and orderly adhere to the flaky powder of the substrate, and from the viewpoint of optical characteristics, spherical fine particles have the highest effect of irregularly reflecting light.

Here, the coloring pigment includes an organic pigment and an inorganic pigment. Among these, as organic dyes, calsamine, turmeric, shikonin, Red No. 201, Red No. 202,
Red No. 204, Red No. 205, Red No. 220, Red No. 22
No. 6, Red No. 228, Red No. 405, Orange No. 203, Orange No. 204, Yellow No. 205, Yellow No. 401, Blue No. 404
No. 3, Red No. 3, Red No. 104, Red No. 106, Red No. 22
No. 7, Red No. 230, Red No. 401, Red No. 505, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Green No. 3, Blue No. 1, and zirconium, barium or Aluminum lake and the like can be mentioned. Examples of the inorganic pigments include inorganic white pigments such as titanium dioxide and zinc oxide; inorganic red pigments such as iron oxide (iron oxide) and iron titanate; inorganic brown pigments such as γ-iron oxide; yellow iron oxide; Inorganic yellow pigments such as black iron oxide, carbon black, and lower titanium oxide; inorganic purple pigments such as mango violet and cobalt violet; and inorganic green pigments such as chromium oxide, chromium hydroxide, and cobalt titanate. Pigments, ultramarine blue, inorganic blue pigments such as dark blue, titanium oxide coated mica, titanium oxide coated bismuth oxychloride, titanium oxide coated talc, colored titanium oxide coated mica, bismuth oxychloride, pearl pigments such as fish scale foil, aluminum powder, Metal powder pigments such as copper powder and the like, and one or more of these may be used as the above resin. Yes is allowed to colored spherical resin powder.

Regarding the particle diameter of the colored spherical resin powder, it is desirable that the average particle diameter is in the range of 0.05 to 1.0 μm. If the average particle size exceeds 1.0 μm, the adhesion to the flaky powder is poor, and the desired optical properties cannot be obtained.
On the other hand, if it is less than 0.05 μm, the cohesiveness increases, making it difficult to coat the flaky powder surface in an orderly manner, making it difficult to obtain the desired optical characteristics. The molecular weight of the polymer used in the colored spherical resin powder is not particularly limited as long as it is stable to oils, water, alcohol, various chemicals, and the like mixed together with the composite powder of the present invention in the makeup cosmetic.

[0013] In the method of producing a colored spherical resin powder-coated powder which is a composite powder according to the present invention, a flaky powder and a colored spherical resin powder are mixed at a constant composition ratio, and after being slurried in an alcohol aqueous solution, the slurry is prepared. By spray drying at 100 ° C., a colored spherical resin powder can be attached to the surface to produce the resin. Further, in the present invention, a composite powder obtained by mixing and coating various colored spherical resin powders with one kind or a mixture of two or more kinds selected from the above flaky powders is also included.

The composition ratio (weight ratio) of the flaky powder and the colored spherical resin powder in the obtained composite powder should be flaky powder: colored spherical resin powder = 95: 5 to 40:60. . If the ratio of the colored spherical resin powder is higher than this, the amount of the colored spherical resin powder present alone increases,
The effect also appears in color and texture. On the other hand, if the amount is less than this, it is difficult to orderly adhere to the flaky powder, the optical properties of the substrate surface appear, and the color and texture are affected.

According to the present invention, there is provided a makeup cosmetic containing the above composite powder. The compounding amount of the composite powder in the makeup cosmetic of the present invention is not particularly limited, but is usually 0.5 to 50% by weight.

The makeup cosmetic of the present invention contains W / O
Emulsified cosmetics, oily cosmetics, solid powdered cosmetics, etc. are included,
General components that are blended to constitute these dosage forms,
For example, higher alcohols, lanolin derivatives, protein derivatives and fatty acid ester oils of polyethylene glycol,
Oil components such as silicone oil, paraffin oil and fluorine oil, humectant components such as propylene glycol, glycerin and polyethylene glycol, oil-soluble polymer substances, water-soluble polymer substances, ion-exchanged water, alcohol, talc, mica , Extender pigments such as kaolin, iron oxide,
Spherical powder, preservative, bactericide, pH adjuster, antioxidant,
Dyes, fragrances and the like can be blended.

[0017]

EXAMPLES Next, the present invention will be described in more detail by way of examples, but the present invention is not limited thereto. Unless otherwise specified, the compounding amount is% by weight.

Production Example 1 (Production of Synthetic Mica Coated with Colored Spherical Poly (methyl methacrylate) Resin Powder) Spherical poly (methyl methacrylate) (hereinafter abbreviated as PMMA) is colored with red No. 226 during polymerization to have an average particle size of 0. A colored spherical PMMA resin powder having a diameter of 0.3 μm was obtained. Next, flaky synthetic mica having an average particle diameter of 20 to 30 μm is used for the base pigment, and the base pigment and the colored spherical PMMA resin powder are slurried in an aqueous alcohol solution. By spray drying, a colored spherical PMMA resin-coated synthetic mica having a coating ratio of synthetic mica / colored spherical PMMA resin powder = 80/20 was obtained. The coating state of the obtained colored spherical PMMA resin-coated synthetic mica was observed with a scanning electron microscope. As a result, it was confirmed that the flaky synthetic mica was coated with spherical PMMA to form a composite. In addition, the obtained colored spherical P
As a result of measuring the optical characteristics of the MMA resin-coated synthetic mica with a variable-angle gloss meter, compared with ordinary spherical PMMA resin powder-coated synthetic mica, it selectively diffuses long-wavelength red light,
Optical characteristics close to bare skin were obtained.

Production Example 2 (Production of talc coated with colored spherical poly (methyl methacrylate) resin powder) A flaky talc having an average particle diameter of 10 to 30 μm was used as a substrate pigment, and spherical PMMA resin powder contained Red No. 202 The colored spherical resin powder having an average particle diameter of 0.3 μm was coated to obtain a colored spherical PMMA resin-coated talc having a coating ratio of talc / colored spherical PMMA resin powder = 50/50.

Production Example 3 (Production of Mica Titanium Coated with Colored Spherical Poly (methyl methacrylate) Resin Powder) Titanium mica having an average particle diameter of 20 to 30 μm and having red interference light was used as a substrate pigment, and Yellow No. 401 was contained. A spherical PMMA resin powder having an average particle diameter of 0.35 μm was coated to obtain a colored spherical PMMA resin-coated mica titanium having a coating ratio of titanium mica / colored spherical PMMA resin powder = 55/45.

Example 1 and Comparative Examples 1-2 A solid powder foundation using the composite powder produced in Production Example 1 was produced by a conventional method using the following formulation. As comparative examples, a solid powder foundation using a colored spherical PMMA resin and synthetic mica instead of the composite powder according to the present invention (Comparative Example 1) and a solid powder foundation using a non-colored spherical PMMA resin-coated synthetic mica (Comparative Example 2) was produced by a conventional method using the following formulation.

[0022]

[Table 1] 例 Example Comparative example Formulation ──── １ 1 1 2 ───────────────────────────── Sericite 20.0 20.0 20.0 Mica 11.55 11.55 10.75 Talc 15.0 15.0 15.0 Titanium oxide for pigment 8.0 8.0 8.0 Iron oxide 6.2 6.2 7.0 Colored spherical PMMA resin-coated synthetic mica 8.0--(Production Example 1) Colored spherical PMMA resin-3.6-Synthetic mica-4.4-Spherical PMMA resin-coated synthetic mica--8.0 Preservative 0.3 0.3 0.3 Liquid paraffin 4.0 4.0 4.0 Methylphenylpolysiloxane 5.0 5.0 5.0 Squalane 4.0 4.0 4.0 Sorbitan sesquiisostearate 1.0 1.0 1.0 Antioxidant proper amount proper amount proper amount perfume proper amount proper amount proper amount ─────────────────── ──────────

Example 2 and Comparative Example 3 Using the colored spherical PMMA resin-coated talc obtained in Production Example 2 above, a white powder as a make-up cosmetic was produced by a conventional method using the following formulation.

[0024]

Table 2 Formulation Example 2 Comparative Example 3 ───────────────── Talc 54.3 54.3 Mica 25.0 25.0 Zinc oxide 5.0 5.0 Titanium oxide for pigments 5.0 5.0 Colored spherical PMMA resin coating Talc 5.0-(Production Example 2) Spherical PMMA resin coating Talc-5.0 Iron oxide 0.14 0.2 Preservative 0.2 0.2 Squalane 3.0 3.0 Purified lanolin 2.0 2.0 Sorbitan sesquiisostearate 0.2 0.2 Antioxidant qs qs perfume qs qs ───────────────── ───────────

Example 3, Comparative Example 4 Using the colored spherical PMMA resin-coated mica titanium obtained in Production Example 3 above, a solid powder foundation as a make-up cosmetic was produced by a conventional method using the following formulation.

[0026]

Table 3 Formulation Example 3 Comparative Example 4シ リ コ ー ン Siliconized mica 18.0 18.0 Siliconized talc 10.0 10.0 Siliconized sericite 30.0 30.0 Titanium oxide for siliconized pigment 8.0 8.0 Silicone Treated iron oxide 5.2 5.2 Colored spherical PMMA resin-coated titanium mica 6.0-(Production Example 3) Mica titanium-3.18 Colored spherical PMMA resin powder-2.82 Siliconized fine particle titanium oxide 8.0 8.0 Zinc white 2.0 2.0 Preservative 0.3 0.3 Dimethicone 3.0 3.0 Methylphenyl Polysiloxane 5.0 5.0 Squalane 3.0 3.0 Sorbitan sesquiisostearate 1.2 1.2 Antioxidant qs qs perfume qs qs ──────────────────────────── ── ─

With respect to the makeup cosmetics obtained in Examples 1 to 3 and Comparative Examples 1 to 4, the effects of finishing were compared. Measurement of Finish Effect The solid powder foundations of Example 3 and Comparative Example 4 were applied to nine female panels, and the finish of bare skin and makeup cosmetics was measured for optical characteristics using a variable angle gloss meter. The light incident angle of light is fixed at 45 °, and the light reflection characteristics of the skin with bare skin and the solid powder foundation of Example 3 and Comparative Example 4 applied are changed in the light receiving angle range of 90 ° to 160 °. These reflection characteristics were evaluated by lightness (Y value). In addition, the measured part was the lower part of the cheek. Table 4 shows the evaluation results. As shown in Table 4, the finishing effect (texture) of the solid powder foundation of Example 3
Showed optical properties closer to bare skin than Comparative Example 4.

[0028]

[Table 4] ───────────────────────────── Receiving angle (degree) 90 100 110 120 130 140 150 160 ────値 Y value bare skin 30 34 37 42 51 56 58 56 Example 3 28 30 33 38 46 50 51 50 Comparative Example 4 27 29 31 39 48 54 46 39 ─────────────────────────────

Actual use test by sensory use The makeup cosmetics of Examples 1 to 3 and Comparative Examples 1 to 3 were subjected to an actual use test (degree of natural finish, presence or absence of transparency, texture, (The degree of pores is conspicuous, the overall beautiful finish, the degree of likes and dislikes). The evaluation method evaluated each evaluation item according to the following criteria.

[Evaluation Criteria] (Evaluation Points) 5 points: Very good. 4 points: Good. 3 points: Normal. 2 points: Slightly inferior. 1 point: poor. (Evaluation) ：: Average of evaluation points 4.1 or more ：: Average of evaluation points 3.1 to 4.0 Δ: Average of evaluation points 2.1 to 3.0 ×: Average of evaluation points 2.0 or less

[0031]

[Table 5] 例 Example Comparative example ───────── ─ ─────── 1 2 3 1 2 3 程度 Natural finish ◎ ◎ ○ △ ○ △ Transparency ◎ ◎ ◎ × △ △ Texture and pores are noticeable ○ ○ ○ △ ○ × Overall beautiful finish ◎ ◎ ◎ △ ○ △ Like / Dislike ◎ ◎ ◎ △ △ × ────────────────────────────────

As shown in Table 5, it can be seen that the makeup cosmetic of the present invention can obtain a natural and beautiful finish with a sense of transparency while covering the defects of the bare skin.

[0033]

As described above, the makeup cosmetic using the composite powder of the present invention has a natural finish effect close to bare skin with a high degree of transparency that has never been seen before, while covering the skin defects. is there.

Continued on the front page F term (reference) 4C083 AB151 AB171 AB211 AB221 AB232 AB242 AB361 AB431 AB432 AC022 AC442 AC661 AD021 AD071 AD091 AD092 AD151 AD152 AD512 BB24 BB26 CC11 CC12 DD01 DD17 DD21 EE06

Claims (6)

[Claims] 1. A composite powder comprising a flaky powder as a substrate and a colored spherical resin powder coated on the surface thereof, wherein the composition ratio (weight ratio) of the flaky powder to the colored spherical resin powder is: Flaky powder: colored spherical resin powder = 95: 5-4
A composite powder, wherein the ratio is 0:60. 2. The flaky powder comprises talc, mica, sericite, barium sulfate, alumina, boron nitride, synthetic mica, synthetic talc, zinc oxide, silica, mica titanium, lauroyl lysine and iron oxide-coated mica. The composite powder according to claim 1, wherein the composite powder is one or more selected from the group and has an average particle diameter of 1 to 80 µm. 3. The colored spherical resin powder is made of an acrylic resin, a nylon resin, a styrene resin, a silicone resin, or a copolymer resin thereof, and contains an organic dye or an inorganic pigment in the resin. 2. The composite powder according to 1. 4. The composite powder according to claim 1, wherein the colored spherical resin powder is an acrylic resin. 5. The composite powder according to claim 1, wherein the colored spherical resin powder has an average particle size of 0.05 to 1.0 μm. 6. A makeup cosmetic comprising the composite powder according to claim 1.