JPS6122006A - Spherically granulated powdery makeup cosmetic - Google Patents

Abstract

PURPOSE:The titled cosmetic, obtained by granulating a mixture of a pigment with an oil with a water-soluble high polymer as a binder in a fluidized bed granulator, having improved portability without bulkiness, and capable of recognizing easily the measure of a required amount to be used. CONSTITUTION:A spherically granulated powdery makeup cosmetic obtained by granulating a mixture, prepared by mixing a pigment with an oil, and improving the hydrophobicity of the pigment with impregnation of the oil and/or a powdery composition consisting of a pigment having improved hydrophobicity of the surface by the surface treatment with the oil with 0.01-5.0wt%, based on the pigment, water-soluble high polymer as a binder in a fluidized bed granulator, and having 0.5-5mm., preferably 2-4mm. grain diameter. The amount of the oil to be used is 1-30wt%, preferably 3-20wt%, based on the pigment.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention uses a fluidized bed granulator to
The present invention relates to a novel powder makeup cosmetic product obtained using a water-soluble polymeric substance.

(Prior art) Conventionally, powder makeup cosmetics and their manufacturing methods include:
Generally, the powder consisting of general pigments and some oil is packed in a container in a loose form, or the container is filled in a plate and stamped in a pressed form, but when planning a multi-colored set of products, Since each color requires a corresponding volume and cross-sectional area depending on the number of colors, the container as a whole becomes large and is very inconvenient to carry.

As for how to use it, conventional methods use props such as puffs, tips, brushes, or fingertips to apply makeup, but the amount of makeup required for each application varies depending on the variety, color tone, etc. Since it depends on the area of makeup, it has the disadvantage that it requires a considerable amount of skill for beginners to make use of powdered makeup cosmetics by making full use of these props or fingertips, regardless of whether they are experts or not.

(Problems to be solved by the invention) The present invention solves the problems of the prior art.-1
The purpose of this is that even when planning a multicolor set,
To provide a makeup cosmetic that is not bulky, has excellent portability, and allows easy recognition of the required amount of the cosmetic.

(Means for Solving the Problems) In other words, one aspect of the present invention is to produce a powder composition comprising a pigment whose surface has been treated with a mixture of a pigment and an oil agent and/or an oil agent and which has been made hydrophobic. This powder makeup cosmetic is granulated using a granulator into spherical shapes using a water-soluble polymeric substance as a binder.

(Specific description of structure) As the granulation method in the present invention, fluidized bed granulation is optimal. This is a method in which the powder is fluidized in an air stream and granulated by spraying an aqueous solution of a water-soluble polymer substance as a binder onto the powder. Inside, a series of operations from granulation to drying 6
It has advantageous features such as being able to perform this continuously, and because this device has a closed structure, there is no scattering of dust outside the system. At that time, a water-soluble polymeric substance is used as an inder for granulation and to impart appropriate strength to the spheroidized product. Examples of the water-soluble polymeric substance include carboxymethylcellulose, methylcellulose, , cellulose derivatives such as hydroxyethyl cellulose, synthetic polymers such as polyvinyl alcohol, polyvinylpyrrolidone, etc. These water-soluble molecular substances can be prepared in advance in dilute aqueous solutions (concentrations of 0.1 to 8
volume (about %), and mist it through the fluidized bed granulator.
Although the particle size is controlled by the particle size, the particle size is preferably 0.5 to 5 m, and the most preferable is 2 to 4 m. If the particle size is less than 0.5 mm, the particles will be powdery and will fly a lot during production and use, eliminating the advantage of making them spherical. Moreover, if the particle size is 5 mm or more, one particle exceeds the amount for cosmetic use, and perhaps because a filling container is used, it is preferable to use hydrophobic particles, which can form a beautiful spherical shape. This is because if the powder surface is hydrophilic, it cannot be coated with a binder (water-soluble polymeric substance). For the above reasons, preferred powder compositions include those obtained by mixing the pigment described below with an oil agent and impregnating the composition with the oil agent to improve hydrophobicity, and/or the pigment described below being surface-treated with an oil agent.

Only those with improved hydrophobicity achieve the object of the present invention.

The oil agent used in this case is preferably a so-called oily substance commonly used in cosmetics and has water repellency, such as liquid paraffin, squalane, petrolatum, microcrystalline wax, ceresin, etc. hydrocarbons such as stearic acid, oleic acid, palmitic acid, myristic acid, higher fatty acids such as cetyl alcohol, oleyl alcohol, stearyl alcohol, isopropyl palmitate, inpropyl myristate, 2-octyldodecyl myristate, etc. Ester such as state, monostearic acid glyceride, 2-
Ethylhexanoic acid triglyceride.

Examples include glycerides such as coconut oil fatty acid triglyceride, silicone oils such as dimethylpolysiloxane, diphenylmethylpolysiloxane, and the like. The amount of these oils to be used for pigments is generally 1 to 80 mj per pigment.
i%, preferably 8-20% by weight.

Pigments in the present invention refer to a group of pigments commonly used in cosmetics, such as inorganic pigments such as talc, kaolin, mica, calcium carbonate, titanium oxide, zinc white, ultramarine, and iron oxide; No., Red No. 204, Red No. 226,
Examples include organic dyes such as Yellow No. 401 and Blue No. 404.

As described above, the powder composition prepared by using the pigment and oil described above is granulated into spheres using a water-soluble polymeric substance as a binder in a fluidized bed granulator. It is possible to produce the desired novel powder makeup cosmetics.

(Example) Powder composition obtained by adding 5 parts of liquid paraffin as an oil to 50 parts of talc, 10 parts of kaolin, 4 parts of hydrated chromium, 8 parts of ultramarine blue, and 28 parts of titanium mica, followed by mixing, stirring, and pulverizing. hydroxyethyl cellulose as a binder.
Using a 6% aqueous solution, a fluidized bed granulator Eromatik AG (
(manufactured by Fuji Sangyo Co., Ltd.) under the following conditions to obtain a spherical blue-green eye shadow with a diameter of 2 to 8 fi.

Granulation conditions: Air volume scale 8~1O Inner layer temperature 40″±5°C Spray pressure 0.5 kq/d Open when spraying: 2 hours Drying speed 70±5°C Drying time: 8 hours Example 2 64 parts talc, 10 parts mica, 5 parts kaolin.

Chromium oxide 15a, 1 part of yellow iron oxide, 95 parts in total were mixed well, placed in 800 parts of hexane, heated to 60°C, and slowly stirred. Add 8 parts of the solution and continue heating and stirring for 80 minutes.

Then, the pressure was reduced to 8 ta Hg and the solvent was removed at 60°C to obtain 100 parts of a hydrophobized powder composition. This powder composition was granulated using a koji bed granulator under the same conditions as in Example 1 using a 0.8% aqueous methylcellulose solution as a binder to form a green spherical eye shadow with a particle size of 8-74 m+. Obtained.

Example 8 80 parts of talc, 85 parts of mica, 8 parts of red iron oxide, 2 parts of yellow iron oxide, and 22 parts of mother titanium, a total of 92 parts, were mixed well, and 8 parts of dimethylpolysiloxane was dissolved in 100 parts of impropat tool. Gradually add to the mixture and stir for 80 minutes. Thereafter, the solvent was collected and baked at 180° C. for 7 hours to obtain 100 parts of a surface-treated and hydrophobized powder composition.

This powder composition was granulated in the same manner as in the example using a 1.2% polyvinyl alcohol water bath solution as a binder to obtain a light brown spherical blusher with a diameter of 8 to 4+wm.

After adding 50 parts of polyvinyl alcohol 1.2% water F13M and kneading it, it was formed into aggregates using a compression extrusion granulator, and dried for 80 minutes in a bnoC to obtain a light brown lumpy blusher. Ta. Comparing the blush obtained here with that of Example 8 +
When i=, since it is not spherical, there is a moon on a part of the particle, and the corner is easily chipped, giving it a powdery appearance in terms of the s method. When filling a container with the present cosmetic, it is not possible to ensure a uniform filling amount using the same method.

In addition, it is difficult to completely dry the Saito cosmetic particles, and the degree of dryness differs between the particle surface and the inside, so it may not come off or stick.
This has the disadvantage that the cosmetic effect is not uniform, but the cosmetic effect varies.

When granulation was carried out using a compression extrusion granulation plate instead of the Kokwi koji bed granulation machine described above, the powdered makeup cosmetics targeted by the present invention could not be obtained.

(Effects of the Invention) The powder makeup cosmetics according to Examples 1, 2 and 8 above can be filled into small bottles made of glass or the like, making them convenient to carry, and can be used for traveling for several days. If,
Mix and carry the materials obtained in Example 1.2 and 8,
All you have to do is take out the spherical constraints of the necessary items and color tones as needed. Also, when using it as a toilet, you can just take out 1-2 tablets on your palm or tissue paper, and use them with your fingertips or with a special prop as described in 8o, and the amount you use will not be squishy each time, making it easy for beginners to use makeup. Up is possible.

Claims (2)

[Claims] (1) A powder composition consisting of a mixture of a pigment and an oil agent and/or a pigment that has been surface-treated and made hydrophobic with an oil agent is granulated into spheres using a water-soluble polymer substance as a binder using a fluidized bed granulator. Powdered makeup cosmetics. (2) The powder makeup cosmetic according to claim (1), wherein the spherically granulated powder makeup cosmetic has a particle size of 0.5 to 5 mm.