JPH08165221A - Solid powder cosmetic - Google Patents

Abstract

PURPOSE: To obtain a solid power cosmetic useful as eye shadow, cheek rouge or foundation, having excellent gloss, transparent feeling, make-up durability, impact strength, by blending powder containing a fixed amount or more of mica-based powder with polymethyl methacrylate. CONSTITUTION: This solid power cosmetic comprises powder containing >=60wt.%, preferably >=70wt.% of mica-based powder (preferably 60-90wt.% based on the whole amount) and polymethyl methacrylate (preferably 10-30wt.% based on the whole amount). The solid power cosmetic can be produced by blending powder containing >=60wt.% of mica-based powder with a cosmetic raw material containing polymethyl methacrylate, then spraying a perfume, uniformly mixing, grinding by a grinder, passing through a sieve and compression molding the powder in a middle plate. The cosmetic has excellent gloss, transparent feeling, non-oiliness, compatibility with skin, color durability and impact resistance.

Description

Detailed Description of the Invention

[0001]

The present invention relates to an eye shadow, a blusher,
The present invention relates to a solid powder cosmetic useful as a foundation or the like.

[0002]

2. Description of the Related Art Mica-based powders (particularly pearlescent agents) are bases that are excellent in gloss and transparency, and are therefore used in many solid powder cosmetics, especially eye shadows. Came. However, since it has poor moldability (hard to set, breaks quickly when dropped), it is difficult to mix it alone, and it must be mixed with other powders (talc, kaolin, metal soap, etc.), and gloss, It was inferior to the single blend system in terms of transparency. Further, in order to improve the moldability, the oil content must be blended in an amount of 15 to 30% by weight, so that there are drawbacks that it is oily, has a lot of sticking to the skin, and has a large amount of aging. As a result of diligent studies on the above problems of solid powder cosmetics, the present inventors have found that if polymethylmethacrylate is blended in a system containing 60% by weight or more of mica-based powder, polymethylmethacrylate Has been found to work as a binder to solve the above-mentioned problems, and has completed the present invention. It should be noted that there has been an example in which polymethyl methacrylate was blended as a usability improver, but there has been no example in which it was blended as a binder for improving moldability.

[0003]

That is, the present invention is a solid powder cosmetic characterized in that a powder containing 60% by weight or more of mica powder and polymethylmethacrylate are blended. The solid powder cosmetic according to the present invention has good moldability and is excellent in gloss, transparency, usability, and color retention effect.

The structure of the present invention will be described in detail below. The mica-based powder used in the present invention includes mica and mica titanium-based pearling agents, and preferably mica titanium-based pearling agents. The blending amount is 60% by weight or more of the powder, and preferably 70% by weight or more. When it is less than 60% by weight, gloss and transparency are insufficient. In the solid powder cosmetic of the present invention, in addition to mica-based powder, powders other than mica-based powder can be blended within a range that does not impair the effects of the present invention. The powder used in the present invention includes inorganic powders such as talc and sericite, organic powders such as polyamide powder, polyethylene powder, silicone resin powder, titanium dioxide, iron oxide, yellow iron oxide, low-order titanium oxide, ultramarine blue and navy blue. And the like, and organic pigments such as red No. 201, orange No. 203, yellow No. 4, blue No. 1, and the like. These may use 1 type and may use 2 or more types. As the powder, a treated powder such as a hydrophobized powder can also be used. The total amount of the powder containing the mica-based powder is 60 to 90% by weight based on the total amount of the solid powder cosmetic.

The amount of polymethyl methacrylate used in the present invention is 10 to 30% by weight, preferably 15 to 25%.
% By weight. If it is less than 10% by weight, the effect as a binder is inferior, and if it exceeds 30% by weight, the powder becomes hard and the removal becomes poor, and further cracking occurs.

In the solid powder cosmetic of the present invention, a powder containing 60% by weight or more of mica powder and a cosmetic raw material containing polymethylmethacrylate are mixed, and then a fragrance is sprayed to uniformly mix them. It can be produced by crushing with a crusher, passing through a sieve, and compression-molding into a medium plate.

In addition to the above components, the solid powder cosmetic of the present invention contains oils, preservatives, antioxidants, chemicals, ultraviolet absorbers, moisturizers other than those mentioned above, as long as the effects of the present invention are not impaired. It is possible to mix such as. However, the component is not limited to the above components as long as it can be applied to general cosmetics.

[0008]

EXAMPLES Examples of the present invention will now be described, but the present invention is not limited to these. The blending amount is% by weight. Example 1 (eye shadow) A. Powder part Mica titanium 50% Iron oxide-treated mica titanium 10 Polymethylmethacrylate 10 Mica 8 Preservative Suitable amount B. Oil Phase Part Vaseline 20 Antioxidant Appropriate amount Perfume Appropriate amount The powder part of A is well mixed with a blender, and the dissolved oil phase part of B is added to the powder part and mixed uniformly. This is processed with a crusher and compression molded.

Example 2 (Eye Shadow) An eye shadow was produced in the same manner as in Example 1 according to the formulation shown in Table 1.

Comparative Examples 1 and 2 In the same manner as in Example 1, eye shadows were produced according to the formulations shown in Table 1.

The eye shadows of Examples 1 and 2 and Comparative Examples 1 and 2 were compared in terms of usability, makeup retention and impact resistance. The data in Table 1 was obtained by applying a eye shadow to 30 left and right eyelids on 30 female panels to test usability and makeup retention. The evaluation criteria are as follows. ⊚: Very good ∘: Good Δ: Poor ×: Very bad Further, the impact resistance was evaluated by a drop test from a height of 30 cm, and evaluated by how many times it was broken. The evaluation criteria are as follows. ⊚: 11th or more O: 7 to 10th Δ: 5 to 6th ×: 4th or less In addition, in Table 1, * 1 indicates that there is a lot of sticking to the skin.

[0012]

[Table 1] ─────────────────────────────────── Example 1 Example 2 Comparative Example 1 Comparative Example 2 ─────────────────────────────────── Powder Mica Titanium 50% 50% 50% 50% Iron oxide Treated Mica Titanium 10 10 10 10 Polymethylmethacrylate 10 18--Mica 8-18-Talc---18 Preservative Suitable amount Suitable amount Suitable amount Suitable amount ──────────────────── ──────────────── Oil phase Vaseline 20 20 20 20 Antioxidant Proper amount Proper amount Proper amount Proper amount Perfume Proper amount Proper amount Proper amount Proper amount ────────────── ───────────────────── Gloss ◎ ◎ ○ △ Transparency ◎ ◎ ○ △ Not oily ○ ◎ × × Skin contact ○ ◎ × ^{* 1} △ ^{* 1} Color retention ○ ◎ × × Impact resistance ○ ◎ × △ ─────── ─────────────────────────────

As is clear from Table 1, the eye shadow of the present invention is very excellent in usability, cosmetic durability and impact resistance as compared with the conventional products.

Example 3 (blusher) A. Powder part Red iron oxide-treated mica titanium 21% Yellow iron oxide-treated mica titanium 26 Black iron oxide-treated mica titanium 16 Polymethylmethacrylate 30 Preservative Suitable amount B. Oil phase part Liquid paraffin 5 Sorbitan sesquioleate 1 Antioxidant Appropriate amount Perfume Appropriate amount The production method is in accordance with Example 1.

Example 4 (Foundation) A. Powder part Hydrophobized mica 60% Polymethylmethacrylate 15 Coloring material Suitable amount Preservative Suitable amount B. Oil phase part Liquid paraffin 8 Methyl polysiloxane (20 cs) 10 Sorbitan diisostearate 1 Antioxidant proper amount Perfume proper amount The production method is in accordance with Example 1.

[0016]

Industrial Applicability As described above, the solid powder cosmetic of the present invention has good gloss, transparency, feeling of use, makeup lasting and impact resistance which could not be achieved conventionally. It can be used as a cosmetic for shadows, blushers and foundations.

Claims (3)

[Claims] 1. A solid powder cosmetic, comprising a powder containing 60% by weight or more of a mica powder and polymethylmethacrylate. 2. The solid powder cosmetic according to claim 1, wherein the compounding amount of polymethylmethacrylate is 10 to 30% by weight based on the total amount. 3. The solid powder cosmetic according to claim 1 or 2, wherein the amount of the powder containing 60% by weight or more of the mica powder is 60 to 90% by weight based on the total amount.