JPH01175922A - Production of solid powdery cosmetic - Google Patents

Abstract

PURPOSE:To readily obtain a high-quality solid powdery cosmetic without requiring much time for mixing and stirring, by stirring and mixing a powdery cosmetic base material with a fluorocarbon, filling the resultant mixture in a container and volatilizing the fluorocarbon. CONSTITUTION:A fluorocarbon having <=110 deg.C boiling point is stirred and mixed with a powdery cosmetic base material to provide a granular or powdery sub stance, which is then filled in a cosmetic container. The fluorocarbon is subse quently volatilized and molding is carried out to afford the aimed substance. The amount of the blended fluorocarbon is 20-80wt.% expressed in terms of weight concentration in mixing. The fluorocarbon is a colorless, transparent and inert liquid having extremely low surface tension and excellent permeability without dissolving most of cosmetic base materials. Fluorinert FC-72(R) manufac tured by Sumitomo 3M Ltd. is exemplified as the fluorocarbon.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is a method for producing solid powder cosmetics that can simplify various production steps by using fluorocarbon as a mixing solvent.

[Prior art] The wet method, which is used as one of the conventional methods for manufacturing solid powder cosmetics, has a complicated manufacturing process and is difficult to produce powder cosmetics that contain a large amount of titanium-mica pearl powder. Even when compression molding is performed, it is difficult to solidify.

Therefore, in order to simplify these processes and equipment and to solidify powdered cosmetics containing a large amount of titanium-mica pearl powder, a method using fluorocarbons as a mixing solvent (Unexamined Japanese Patent Publication No. 1986-123107) has also been proposed.

[Problems to be Solved by the Invention] However, in the method disclosed in JP-A-62-123107, since a fluorinated hydrocarbon is used as a mixing solvent, in some cases it may When the solvent evaporates, the dissolved substances migrate to the surface of the solid cosmetic, resulting in a lack of uniformity in the system and impairing the quality of the solid powder cosmetic, such as its uniformity and impact resistance. This could lead to a decline.

[Means for Solving the Problems] In view of the above points, the inventors of the present invention conducted extensive research to solve the above drawbacks, and as a result, discovered the use of fluorocarbon as a mixing solvent, and completed the present invention. Ta.

That is, in the present invention, when a powder cosmetic is filled into a container and molded to obtain a solid powder cosmetic, fluorocarbon having a boiling point of 110° C. or less and a powder cosmetic base are stirred and mixed, and the powder cosmetic is formed into a granular or liquid form. This is a method for producing a solid powder cosmetic, which is characterized in that the solid powder cosmetic is formed into a solid powder, then filled into a cosmetic container, and then the fluorocarbon is volatilized.

The fluorocarbon used in the present invention has a boiling point of 110°C or less, is a colorless, transparent, and inert liquid, and hardly dissolves any cosmetic base. It also has extremely low surface tension and excellent permeability.

Specifically, the fluorinated carbon used in the present invention is Fluorinert FC-72 manufactured by Sumitomo 3M Limited (boiling point 5
6°C, surface tension 12 dynes/cm2), Fluorinert FC-84 (boiling point 80°C, surface tension 13 dynes/cm2)
es/cm2), Fluorinert FC-77 (boiling point 9
7℃, surface tension 15 dynes/cm2), Fluorinert FC-75 (boiling point 102℃, surface tension 15 dynes/cm2)
nes/cm2).

The blending amount of fluorocarbon is 20% by weight concentration at the time of mixing.
~80% by weight, and when the amount of fluorocarbon blended is small, the powder cosmetic becomes granular, and when the amount of fluorocarbon blended is large, it becomes fluid.

Powdered cosmetics mixed with fluorocarbon are stirred by hand, by simple stirring using a mixing machine, or by omitting these operations in a hopper using a screw, and then filled into cosmetic containers from the tip of the hopper. . After filling, a solid powder cosmetic can be obtained by volatilizing the fluorocarbon and simply applying pressure to the surface of the powder cosmetic while applying a screen of cloth or paper.

That is, since fluorocarbon has good permeability to the powder cosmetic base, there is no need to spend time on mixing and stirring, and a mixing step is almost unnecessary. In addition, since fluorocarbon easily volatilizes, it has the advantage in terms of the manufacturing process that the drying process is facilitated.

In addition, fluorocarbon has a very low surface tension and excellent permeability, so when mixed with a powder cosmetic base, it drives out the air in the base and increases the chances that the powder cosmetic bases will come into contact with each other. As a result, there are fewer voids even after volatilization, and lamination during pressing, which is often a problem with powder cosmetics that are mainly composed of plate-like powders such as titanium-mica pearl agent powders and mica-based powders, is also eliminated. .

Note that since fluorocarbon is an inert liquid, it does not dissolve most of the common powder cosmetic bases. Therefore, if a polar solvent or the like is used as a mixing solvent, it will dissolve some of the oils, pigments, etc. in the powder cosmetic base, and when the solvent evaporates, the dissolved substances will migrate to the volatilization surface. This has sometimes led to quality deterioration, such as lack of uniformity in the solid powder cosmetic system and poor impact resistance of the solid powder cosmetic.
When fluorocarbon is used, there is no such drawback. Therefore, it has become possible to manufacture solid powder cosmetics with a free formulation composition using powder cosmetic bases such as general-purpose oils, powder raw materials, and additives without being subject to special prescription regulations imposed by conventional wet manufacturing methods. Further, even after the fluorocarbon has volatilized, the powder cosmetic bases are in close contact with each other, so that the pressure required for solidification is extremely small.

The method for producing solid powder cosmetics of the present invention also facilitates the production of solid powder cosmetics, which has been difficult with conventional dry methods. In the dry method, for example, the powder cosmetic base is uniformly supplied and molded into a container with a unique and complex shape such as a star shape or a wave shape, and the powder cosmetic base is uniformly supplied and molded into a particularly thin container with a wide opening. In order to supply and mold a convex-shaped solid powder cosmetic without leaving any distortion in the system or causing lamination on the convex parts, etc., it is necessary to perform labor-intensive pretreatment, pre-processing, and special procedures. Processes, special controls, special equipment, etc. were required.

However, in the present invention, these difficulties have been overcome.

The solid powder cosmetics in the present invention are ordinary foundations, white powders, eye shadows, blushers, etc., and their powder components include titanium-mica pearl agents, mica powders, titanium oxide, talc, zinc oxide, etc. Type 1 or 2
Contains more than seeds, liquid rose line, lanolin, as needed.
It contains oils such as squalane, humectants such as glycerin and 1,3-propylene glycol, surfactants, pigments, and ultraviolet absorbers.

[Example] Hereinafter, the present invention will be further explained with reference to Examples.

These do not limit the present invention in any way.

Example [1] Blush (prescription) (% by weight) (1)
Mica 55.3 (2) Pearl agent 8.0 (3) Pigment
15.0 (4) Talc
5.0 (phrase nylon end
6.0 (6) Vaseline
1.0(7) Liquid paraffin
3.0(8) Squalane
4.0(9) Methylpolysiloxane
2.0 (10) Preservative 0
．． 5 (10 fragrance 0.2 (
Manufacturing method) 2.5 g of Fluorinert FC-72 was added to 1 g of the blush base made of the above formulation and mixed uniformly with a mixer. After filling this into a medium plate, the Fluorinert FC-72 is volatilized and dried on a heating plate at 30° C., and then pressed to obtain a solid blush.

Comparative example [1] Blusher (manufacturing method) Example [1] In the same formulation as the formulation of 11, (1) to (
Mix the haiku evenly with a Henschel mixer, then add (
6) Add the heat-dissolved ingredients of (b) and mix evenly. The pulverized product was pressed into a medium plate using the same pressing pressure as in Example [1] to obtain a solid blush.

The blush of Example [11] was a preferable solid powder blush, but the blush of Comparative Example [1] did not have sufficient hardness and was difficult to use because it came off excessively with a brush, and it was difficult to use. The impact was also insufficient.

Example [2] Eyeshadow (prescription) (wt%) (1)
Mica 64.3(2)
Pearl agent 10.0 (3) Pigment 20.0 (4) Lanolin 2.0 (5) Squalane 2.0 (odor) Surfactant 1.0 (7) Preservative
0.5 (8) Fragrance
0.2 (manufacturing method) For 1 g of eyeshadow base consisting of the above formulation,
Add 2.5 g of Fluorinert FC-77 and mix uniformly with a mixer. After filling this into a medium tray, the Fluorinert FC-77 was volatilized and dried on a heating plate at 30° C., and then pressed to obtain a solid eye shadow.

Comparative Example [2] Eye shadow (manufacturing method) 2 g of Freon-113 (1
, 1,2-trichloro-1,2,2-trifluoroethane) and mix uniformly with a mixer. Thereafter, a solid eyeshadow is obtained in the same manner as in Example [2].

Comparative Example [3] Eyeshadow (manufacturing method) 1 g of ethanol was added to 1 g of an eye shadow base having the same formulation as in Example [2] and mixed uniformly with a mixer. Thereafter, a solid eyeshadow is obtained in the same manner as in Example [2].

The eyeshadow of Example [2] was a preferable solid powder eyeshadow, but the eyeshadow of Comparative Example [2] and Comparative Example [
In the eye shadow No. 3], it was observed that some lanolin had migrated to the surface, and the system was found to be non-uniform.

[Effects of the Invention] As detailed above, in the method for producing a solid powder cosmetic of the present invention, by using fluorocarbon, the powder cosmetic can be easily stirred and mixed, and can be mixed in a short time. ,
The equipment required for stirring can be simple, and depending on the type of powdered cosmetic base, sufficient stirring can now be performed by hand.

Further, since fluorocarbon is easily volatilized and has the effect of solidifying the powdered cosmetic after volatilization, less pressure is required for pressing, and a simple press molding machine is required.

Furthermore, since fluorocarbon is an inert liquid and does not dissolve almost any powder cosmetic base, it is possible to perform good manufacturing process control for solid powder cosmetics, and to produce high-quality solid powders. Powdered cosmetics can be obtained.

that's all Applicant: Kobayashi Kose Co., Ltd.

Claims (1)

[Claims] (1) When filling a powder cosmetic into a container and molding it to obtain a solid powder cosmetic, fluorocarbon with a boiling point of 110°C or less and a powder cosmetic base are stirred and mixed to form granules or fluid. A method for producing a solid powder cosmetic, the method comprising: filling the powder into a cosmetic container, and then volatilizing the fluorocarbon.