JP2566441B2 - Method for producing solid powder makeup cosmetics - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for producing a solid powder make-up cosmetic composition by a solvent method, and more specifically, the strength of a molded content filled in a container or the like is improved. Improved, impact resistance is extremely good, and the feeling of use is soft and smooth.
The present invention relates to providing a solid powder makeup cosmetic having excellent properties.

[Prior Art] Solid make-up cosmetics mainly comprise cosmetic powder and an oil agent, and the composition of these components can be changed according to the purpose of makeup.

Conventionally, as a method for molding such solid makeup cosmetics, when the oil content is relatively low (5 to 5% in the composition).
25%), a press molding method in which the contents are filled in a container and then compressed and solidified; when the oil content is large (50% or more in the composition), the contents are heated and melted, and the container etc. The method of pouring, melt-filling, and molding has been generally performed in which the material is poured into a container, filled, and solidified. Further, in recent years, in solid powder makeup cosmetics having a relatively low oil content, a cosmetic base and a volatile solvent are mixed to form a slurry, which is filled in a container or the like, and then the solvent is removed. Solvent method for solidifying by means of known methods has come to be practiced.

[Problems to be Solved by the Invention] In general, solid powder make-up cosmetics have a relatively small amount of an oil agent and poor fluidity. As a result, in the above press molding method, a small amount is uniformly filled in a container or the like. It is difficult to do, and even if evenly filled, the impact resistance is poor because the density of the content after compression molding is biased, and it is particularly difficult to obtain a small and thin cosmetic material. there were.

In the production of solid powder make-up cosmetics, the above solvent method can evenly fill the contents, and can obtain small and thin cosmetics or cosmetics in which different color cosmetics are placed in the same container. It can be said that this is an advantageous method because it can be easily filled. However, even with this method, if compression is not carried out as in the press molding method, the binding force between the powders cannot be sufficiently obtained, the strength of the content after molding is weak, and the impact resistance is poor. On the other hand, when the content is compressed to increase the strength of the content, on the other hand, there are disadvantages that the degree of sticking to the coated body is reduced, and the touch during use becomes hard and a soft feel cannot be obtained. It is also possible to enhance the strength of the content by exerting a function as a binder by blending a solid oil agent or increasing the amount of oil agent, but in this case as well, the touch when used is hard and a heavy oily feel is felt, resulting in a soft feeling. There was a problem such as not being able to obtain a good feeling.

[Means for Solving the Problems] In view of the above-mentioned actual circumstances, the present inventor has conducted studies to overcome these drawbacks, and as a result, upon commercialization by the solvent method,
Solid powder having the excellent properties that the content of the contents molded after filling into a container and the like is increased by essentially incorporating a tetrafluoroethylene resin, the impact resistance is improved, and the feeling of use is soft. They have found that a make-up cosmetic can be obtained, and have completed the present invention.

That is, the present invention, a cosmetic powder, an oil agent, a powder cosmetic base material essentially containing a tetrafluoroethylene resin is mixed with a volatile solvent to form a slurry, and the slurry is filled in a container. And then removing the volatile solvent to solidify it, and to a method for producing a solid powder makeup cosmetic.

 The configuration of the present invention will be described below.

As the cosmetic powder in the present invention, any powder that is usually used in makeup cosmetics can be used.
There is no particular limitation. Examples of such cosmetic powders include inorganic extrinsic pigments such as talc, kaolin, mica, magnesium carbonate, calcium carbonate, magnesium silicate, magnesium aluminum silicate and silica; inorganic white pigments such as titanium oxide and zinc oxide; yellow. Inorganic coloring pigments such as iron oxide, red iron oxide and black iron oxide; pearling agents such as titanium mica and titanium oxide iron mica; organic coloring pigments such as tar pigments; organic powders such as nylon powder, silk powder and crystalline cellulose. Among these, one kind or two or more kinds can be selected and used according to need. The cosmetic powder may be surface-treated with known silicone, metal soap, or the like.

As the oil agent, liquid / semi-solid / solid oils, hydrocarbon oils, ester oils, silicone oils, higher fatty acids, higher alcohols and the like which are usually used in cosmetics are used. Liquid paraffin, squalane, polybutene,
Paraffin wax, microcrystalline wax,
Ceresin wax, polyethylene, petrolatum, castor oil, jojoba oil, macadamian nut oil, isopropyl myristate, isopropyl palmitate, isocetyl stearate, cetyl palmitate, cetyl 2-ethylhexanoate, octyldodecyl myristate, glyceryl trioctanoate, Lanolin, dimethyl polysiloxane,
Examples thereof include oleic acid and oleyl alcohol, but the present invention is not limited to these, and one or two or more selected from these may be used.

Further, the tetrafluoroethylene resin is obtained as a polymer of a tetrafluoroethylene monomer. These include those obtained by concentrating an aqueous dispersion obtained by emulsion-polymerizing a tetrafluoroethylene monomer and stably dispersing it with a nonionic surfactant. Typically, the particle size of the tetrafluoroethylene resin is 0.05-0.5μ, about 6 as resin
Teflon 30J, a milky white dispersion containing 0%
(Mitsui Fluorochemical Co., Ltd.), Teflon 30 (DuPont Co., Ltd.), Polyclon D-1 (Daikin Industries Co., Ltd.), and Fluon GP-1 (ICI). There is also a tetrafluoroethylene resin paste, and representative examples thereof include Teflon 6J (manufactured by Mitsui Fluorochemical Co., Ltd.) and Teflon 6 (manufactured by DuPont). still,
The present invention is not limited to these as long as the object of the present invention can be achieved.

In the case of blending the tetrafluoroethylene resin, a conventional method, that is, mixing with the above-mentioned cosmetic powder or oil and homogenizing, or surface treatment of the above-mentioned cosmetic powder with tetrafluoroethylene resin It can be applied and blended. The method for treating this cosmetic powder with a tetrafluoroethylene resin is not particularly limited as long as it is a means for coating the powder surface. For example, an aqueous dispersion of tetrafluoroethylene resin is diluted with a solvent such as water to form a dilute solution, cosmetic powder is added to this and uniformly mixed, the solvent is removed, and natural drying and heat drying are performed. Then, if necessary, the product is crushed to obtain a surface-treated product. In this treatment, one kind or a mixture of two or more kinds of cosmetic powder may be used, or the powder and the oil agent may be mixed and used.

The powder cosmetics base material in the present invention is constituted by essentially incorporating the above components.

In the composition of the powder cosmetics base material, the compounding amount of the cosmetic powder per powder cosmetics base material is not particularly limited, but generally the total amount is 75 to 95% by weight, and the treatment with tetrafluoroethylene resin In the case of the above-mentioned cosmetic powder, the compounding amount is 5
100% by weight is preferred.

The blending amount of the oil agent is not particularly limited, but generally 5 to 25
Weight percent is preferred.

Furthermore, the compounding amount of the tetrafluoroethylene resin is a usual method, that is, a method of uniformly mixing with a cosmetic powder or an oil agent, or a method of coating the surface of the cosmetic powder, The resin concentration is 0.01 to 5.0% by weight, preferably 0.1 to 2.0% by weight. If the amount is more than this, the cohesiveness becomes strong, and it becomes difficult to form an aggregate when applied on the skin, or it becomes difficult to finely pulverize, and if the amount is too small, the expected effect cannot be obtained.

In the powder cosmetics base material of the present invention, in addition to the above components, if necessary, a surfactant, a gelling agent, a fragrance, an antiseptic, an antioxidant, an ultraviolet absorber, a skin-beautifying component and the like are appropriately blended. can do.

As the volatile solvent used in the present invention, those known in the conventional solvent method can be used, and those having a boiling point of 260 ° C. or less are generally used, for example, water, a low boiling point alcohol such as ethyl alcohol or isopropyl alcohol, CFCs, low boiling point hydrocarbons, low boiling point silicones and the like can be mentioned.

To carry out the method of the present invention, first, a cosmetic powder (tetrafluoroethylene resin-treated or untreated powder), an oil agent and the like are uniformly mixed by a conventional method to prepare a powder cosmetic base material. Next, the powdery cosmetic base material is mixed with a volatile solvent to form a slurry. The amount of the volatile solvent varies depending on the composition of the cosmetic powder and the amount of the oil agent, but it is preferable to make the viscosity such that the air can be easily extracted from the slurry and filled in the container, etc. Is preferably 0.5 to 2.0 times (by weight) the powder cosmetic base material. If the amount of the volatile solvent is too large, it will take a long time to dry and the contents will be lost. Thus, after filling the container etc.,
Remove volatile solvent and solidify. The volatile solvent may be removed by a conventional means known as a solvent method, for example, natural drying, warm drying, warm air drying or the like. If necessary at any point after the filling, paper, cloth, or the like may be placed on the surface of the cosmetic base material, and a compression press operation by pressing may be performed from above.

The solid powder makeup cosmetic thus obtained by the method of the present invention is applied, for example, as a foundation, blusher, eye shadow, white powder and the like.

[Examples] Hereinafter, the present invention will be described in more detail with reference to Examples, but these do not limit the present invention in any way.

Example 1 Solid Eyeshadow An eyeshadow having the composition shown in Table 1 was prepared, and the feeling of use, the usability, and the impact resistance were evaluated.

A tetrafluoroethylene resin dispersion (resin content 60
%, 2 parts by weight) is mixed with 50 times the amount of purified water, mica (100 parts by weight) is added, and after stirring and mixing, water is removed and dried, and then crushed.

The component (1) obtained in B A and the components (2) to (4) are mixed and pulverized.

C components (5) to (8) are mixed.

D B and C are mixed and ground to homogeneity.

E In Example 1 and Comparative Example 1, D was mixed with the component (9) to form a slurry, which was then poured into an intermediate dish and filled, and dried.
By solidifying, a thin product having a thickness of about 1.5 mm was obtained. In Comparative Example 2, a product was obtained by filling D in an inner dish, compressing (pressing pressure, 120 kg / cm ² ) and molding.

The product of Example 1 of the present invention obtained as described above has good adhesiveness to the coated body during use and good spreadability on the skin, and has no powder skips or dustiness at the time of application and is repeatedly used. Even if it does not cause the caking phenomenon, it has a soft touch and a soft feel, and it has a good usability and usability. The result of two drop strength tests (70 cm height) despite its thinness However, there was no change and the impact resistance was good.

On the other hand, in Comparative Example 1, that is, the product prepared by using only the powder of the tetrafluoroethylene resin powder treatment, the degree of sticking to the coated body is small, and the caking phenomenon occurs,
When used, the touch was hard, a soft and soft feeling was not felt, and even after the result of one drop strength test, the contents were cracked or damaged in the surroundings, which was not satisfactory.

Further, Comparative Example 2, that is, the product molded by the press molding method has a large degree of swelling to the coated body, there is powder fluff at the time of coating, and a powdery feel is felt, and a drop strength test is performed once. The result was that the contents were damaged and not satisfactory.

Example 2 Solid Eye Shadow (Component) (Parts by Weight) (1) Talc 30.0 (2) Mica Titanium 30.0 (3) Iron Mica Titanium 23.0 (4) Colored Pigment 1.0 (5) Squalane 8.0 (6) Microcrystalline Wax 2.0 (7) Isocetyl stearate 6.0 (8) Perfume 0.2 (9) Tetrafluoroethylene resin dispersion (resin content 60%) 2.0 (10) Ethanol 80.0 (Production method) Mix A components (1) to (4) ,Smash.

B components (5) to (7) are mixed, heated and dissolved, and then components (8) to (9) are mixed.

C A and B are mixed and then ground.

DC was mixed with the component (10) to form a slurry, which was then poured and filled in an inner plate, dried and solidified to obtain a product.

Example 3 Solid blusher (ingredient) (parts by weight) (1) Talc 60.0 (2) Mica 22.0 (3) Mica titanium 10.0 (4) Color pigment 1.0 (5) Liquid paraffin 2.0 (6) Lanolin 1.5 (7) Squalane 3.5 (8) Perfume 0.2 (9) Tetrafluoroethylene resin dispersion (resin content 60%) 0.5 (10) Octamethylcyclotetrasiloxane 120.0 (Production method) A components (1) to (4) are mixed and ground. To do.

B components (5) to (8) are mixed and dissolved.

B is added to C A, mixed, and then pulverized.

D component (9) is mixed with purified water (100 parts by weight) in advance, C is added, and after stirring and mixing, water is removed and dried, followed by pulverization.

ED was mixed with the component (10) to form a slurry, which was then poured and filled in an inner plate, dried and solidified to obtain a product.

Example 4 Solid foundation (component) (parts by weight) (1) Tetrafluoroethylene resin treated powder mixture * 70.0 (2) Mica titanium 12.0 (3) Zinc stearate 5.0 (4) Nylon powder 5.0 (5) Coloring Pigment 1.0 (6) Liquid paraffin 4.0 (7) Lecithin 1.0 (8) 1,3-butylene glycol 2.0 (9) Ethanol 70.0 * (Component) (parts by weight) (a) Titanium dioxide 15.0 (b) Talc 50.0 (c) Mica 25.0 (d) Colored pigment 3.0 (e) Squalane 3.0 (f) Vaseline 2.0 (to) Methyl hydrogen polysiloxane 1.0 (h) Tetrafluoroethylene dispersion (resin content 60
%) 4.0 (ri) Isopropyl alcohol 100.0 (Production method) A Ingredients (e) to (to) are added to and mixed with the heating of the ingredient (i), and the components (i) to (v) are dispersed and mixed in advance.
(D) was added, and after stirring and mixing, the component (i) was removed,
Then add the component (h) mixed with 10 times the amount of purified water,
After stirring and mixing, water is removed and baking is performed.

The component (1) obtained in B A and the components (2) to (5) are mixed and pulverized.

C components (6) to (8) are mixed.

D B and C are mixed and ground.

ED was mixed with the component (9) to form a slurry, which was then poured into an inner dish and filled, dried and solidified to obtain a product.

The products of Examples 2 to 4 obtained as described above have excellent characteristics such as good fit to the coated body, soft and soft feeling during use, and good impact resistance. It was something that had.

[Effects of the Invention] As described above, according to the present invention, by using a solvent method and blending and using a tetrafluoroethylene resin, the strength of a molded content filled in a container or the like is improved. A solid powder make-up that has extremely good impact resistance, and that the resulting cosmetic does not feel hardness when used or applied, and has a soft and soft feel that is excellent in use. This made it possible to provide makeup cosmetics.

Furthermore, because it has excellent impact resistance, it can be commercialized as a thin or small cosmetic, and it does not require the strength guarantee of the contents by selecting and blending an oil etc., and the sensory characteristics in use can be expanded. It is extremely advantageous.

Claims (1)

(57) [Claims] 1. A powdery cosmetic base material essentially containing a cosmetic powder, an oil agent, and a tetrafluoroethylene resin is mixed with a volatile solvent to form a slurry, and the slurry is filled in a container. And then removing the volatile solvent to solidify it, and a method for producing a solid powder makeup cosmetic.