JPH09286707A - Powdery cosmetic for body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a powdery cosmetic having transparent feeling, excellent in dried feeling, smoothness and impact resistance when applied to skin and useful as body powder, fancy powder, etc. SOLUTION: This powdery for body is obtained by blending powder (e.g. synthetic mica) having >=4μm average particles in an amount of >=70% based on powdery component and blending dimethylpolysiloxane having >=500cs viscosity in an amount of 1-10wt.% based on total cosmetic in a cosmetic blending 70-99wt.% powder component. In this time, blend amount of dimethylpoly- siloxane is preferably >=60% based on total oil content.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to body powder cosmetics such as body powders and fancy powders, and to a body powder cosmetic having a transparent feeling, a dry, smooth feel, and good impact resistance. .

[0002]

2. Description of the Related Art Conventionally, in order to obtain a body cosmetic having a transparent feeling and a dry feel, a spherical powder such as silica, nylon, polyethylene, PMMA, or a low-viscosity silicone oil has been added. I was doing what I was doing.

[0003]

However, the body cosmetics containing them have the drawbacks of poor impact resistance and easy collapse of their contents, and also have the drawback of being inferior in dryness and smoothness during use. Had. The present invention has been made in view of the above-mentioned problems of the prior art, and its object is to provide a transparent feeling when applied to the skin,
An object of the present invention is to provide a powdery cosmetic for a body which has a smooth feel and a smooth feel and has good impact resistance.

[0004]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the inventors of the present invention have conducted extensive studies, and as a result of paying particular attention to the powder material and oil content, the results show that The present inventors have found that a body cosmetic having a transparent feeling when blended with a highly viscous silicone oil, having an excellent silky feel and smoothness, and having good impact resistance can be obtained, and completed the present invention.

That is, the powdery cosmetic for a body of the present invention is a cosmetic in which 70 to 99% by weight of the powder component is blended, and powder having an average particle size of 4 μm or more is blended in 70% or more of the powder component and the viscosity is. A powdery cosmetic for a body, which comprises 1 to 10% by weight of dimethylpolysiloxane of 500 cs or more based on the total amount of the cosmetic.

The structure of the present invention will be described in detail below. The average particle diameter of the powder according to the present invention is 50% diameter based on the integrated weight measured by the sedimentation method. Specifically, it was measured with a sedigraph 5000-01 type manufactured by Shimadzu-Micromeritics. The larger the average particle size is, the more transparent it is, the better the border is, and the smoother the feeling is improved. The particle size is preferably 4 μm or more. When it is less than 4 μm, the hiding property becomes high and the color becomes whitish, resulting in poor transparency, which is not preferable. The larger the particle size, the better the dryness, but
If it exceeds 0 μm, it is not preferable because it is rough.

The powder having an average particle size of 4 μm or more used in the present invention may be any powder used for cosmetics, such as clay minerals such as mica and talc, inorganic salts such as calcium carbonate and barium sulfate, nylon, Polyethylene, PM
Examples thereof include polymer powders such as MA. Among them, synthetic mica is particularly preferable because it is excellent in smoothness, smoothness and transparency. Examples of synthetic mica include fluorine phlogopite mica and potassium 4-silicon mica synthesized by the melting method. Besides, it can be prepared by a solid-phase reaction method, a hydrothermal synthesis method, or the like. These compounds are lumps or agglomerates and therefore require grinding. For the pulverization, a method of using impact pulverization such as a hammer mill, a method of adding water to prepare a slurry state and agitating by stirring, and the like can be used, but any method may be used. In addition, as a merit of using synthetic mica, if a high-purity material is used as a raw material, it becomes a pure white powder and can give a transparent feeling to the skin. These powders for use in the powdery cosmetics for a body of the present invention may be subjected to water repellent, oil repellent, hydrophilic treatment, etc. before use.

In the present invention, the blending amount of the powder component is 70
% By weight to 99% by weight. The compounding amount of the powder having an average particle size of 4 μm or more is preferably 70% or more in the powder component. 70
When the content is less than 10% by weight, the appearance of the product becomes whitish when applied to the skin and a transparent feeling cannot be obtained, which is not preferable.

The dimethylpolysiloxane used in the present invention has a viscosity of 500 cs or more. If it is 500 cs or less, the impact resistance is not sufficient, and there is no smooth feel. The dimethylpolysiloxane having a viscosity of 500 cs or more may be used alone, or may be a mixture of several dimethylpolysiloxanes. Dimethylpolysiloxane having a viscosity of 500 cs or more is preferably blended in the body powder cosmetics in an amount of 60% or more based on the total oil content in terms of usability. If it is 60% or less, it is difficult to obtain a smooth feel, which is not preferable.

In addition to the above-mentioned essential components, the cosmetics of the present invention may contain components usually used in cosmetics, quasi-drugs and the like, as long as the effects of the present invention are not impaired. For example, water, oil, a moisturizer, a surfactant, a dispersant, a preservative, a fragrance, a drug, a thickener, and the like can be added to any conventionally known component.

[0011]

Next, the present invention will be described in more detail with reference to examples. The present invention is not limited to this. All amounts are by weight.

The evaluation method will be described prior to the examples. The performance of the cosmetics of the present invention was evaluated on the basis of the average value of 20 persons by performing a 5-level sensory evaluation by 20 persons of a specialized panel.

Transparency, dryness, and smooth feel 1. Not 2. Not so much 3. Normal 4. Yes 5. The average value of the scores of 20 people who were very high was scored as follows. ◎ 4.5 to 5.0 up ○ 3.5 to less than 4.5 □ 2.5 to less than 3.5 △ 1.5 to less than 2.5 × 1.0 to less than 1.5

Impact-resistant middle plate press-molded into a container and placed on an iron plate for 10 minutes.
The number of pieces damaged when dropped was measured. The results are shown by the symbols shown below. ◎ Number of breakage 0 to 1 ○ Number of breakage 2 to 3 □ Number of breakage 4 to 5 △ Number of breakage 6 to 7 × Number of breakage 8 to 10

Specific body cosmetics according to the present invention will be described below. Examples 1-3, Comparative Examples 1-4 Body powder

[0016]

[Table 1] ──────────────────────────────────── Examples Comparative examples ────── ────────────── 1 2 3 1 2 3 4 5 ──────────────────────────── ──────── (1) Talc (10 μm) 80-80 30 80 80 80- (2) Synthetic Fluoro phlogopite (5 μm) -80 − − − − − − (2 ′) Synthetic fluorophlogopite ( 2 μm) − − − − − − − 80 (3) Talc (2 μm) 10 10 10 60 10 10 10 − (4) Liquid paraffin − − 3 − − − − 5 − (5) Dimethyl polysiloxane (900 cs) 8 85 8-15 3 3 (6) Dimethyl polysiloxane (100cs) − − − − − 8 − − − (7) Pigment Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount (8) Perfume Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount (Production ) (1) to (3) and (7) are mixed with a Henschel mixer, and the mixture of (4) to (6) and (8) is added, mixed and crushed to form an intermediate plate. I got body powder.

[0017]

[Table 2] ─────────────────────────────────── Examples Comparative examples ─────── ───────────── 1 2 3 1 2 3 4 5 ────────────────────────────── ─────── Transparency ◎ ◎ ○ △ ◎ △ □ △ Smoothness ◎ ◎ ○ △ ○ △ □ □ Smooth feeling ○ ◎ ○ □ △ ○ □ □ □ Impact resistance ◎ ◎ ○ ◎ × ○ ○ ○ ─ ─────────────────────────────────── As shown in the table above, the body powder of the present invention is excellent. I understand.

Examples 4-5 Baby powder

[0019]

[Table 3] ────────────────────────────────── Example Example 45 5 ─────── ──────────────────────────── (1) Talc (10 μm) 80 0 (2) Synthetic fluorine phlogopite (5 μm) 9 90 ( 3) Zinc white 3 3 (4) Dimethyl polysiloxane (1000cs) * 8 7 ───────────────────────────────── ── * Mixture of dimethylpolysiloxane 5000cs: 6cs = 7: 3 (Production method) (1) to (3) are mixed with a Henschel mixer, and (4) is added, mixed and crushed into a medium dish. Got baby powder.

The baby powders of Examples 4 and 5 had a transparent feeling, and had a dry feel and a smooth feel. It was also excellent in impact resistance.

Example 6 Aroma Powder (1) Synthetic Fluor phlogopite (5 μm) 96 (2) Pigment 1 (3) Dimethyl polysiloxane (1000 cs) 2 (4) Perfume 1 (Production method) (1), (2) The mixture was mixed with a Henschel mixer, and (3) and (4) were added thereto, mixed and crushed, and the mixture was filled in a container and molded into an aroma powder medium dish to obtain.

The aroma powder of Example 6 has a transparent feeling,
It had a silky feel and a smooth feel.

[0023]

EFFECTS OF THE INVENTION The powdery cosmetic composition for a body of the present invention has a transparent feeling when applied on the skin, has a dry feel and a smooth feel, and is also excellent in impact resistance.

Claims (4)

[Claims] 1. A cosmetic composition containing 70 to 99% by weight of a powder component, wherein 70% or more of powder particles having an average particle diameter of 4 μm or more is contained in the powder component. 2. The powder cosmetic for body according to claim 1, further comprising dimethylpolysiloxane having a viscosity of 500 cs or more in an amount of 1 to 10% by weight based on the total amount of the cosmetic. 3. The powdery cosmetic for a body according to claim 1, wherein the content of the dimethylpolysiloxane is 60% or more of the total oil content. 4. The powder cosmetics for body according to claim 1, wherein the powder having an average particle size of 4 μm or more is synthetic mica.