JPH0780741B2 - Makeup cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a makeup cosmetic composition having an unprecedented excellent feel.

<Prior Art> Conventionally, makeup cosmetics containing powder are, for example,
Like a cake foundation, it is made up of pigments, pigments, oil surfactants, water, heat retaining agents, etc., and has been used to make attractive appearances. However, when it is applied on the skin, the oil absorbency and water absorbency of the powder are too strong, which causes the skin to absorb more sebum and water than necessary, which causes the skin to become bulky. . In addition, when applied to the skin, it has a hard feeling, and there are drawbacks such as poor adhesion and loss of moist feeling, and application with a smooth touch has not been possible. Such a feeling of bulkiness was particularly noticeable and a problem in the dry season of the air.

In order to solve this problem, it has hitherto been attempted to add a moisturizer or the like to cosmetics. That is, an attempt was made to add polyhydric alcohols such as propylene glycol and glycerin to cosmetics to eliminate the above-mentioned sensation of skin bulkiness by their moisturizing ability.

<Problems to be Solved by the Invention> However, these attempts have been unsatisfactory in the following two points.

That is, the first point is that, in the case of cosmetics containing powder, when the cosmetic is manufactured by simply mixing the heat retaining agent with the powder together with other components, the cosmetics do not adhere to the powder surface. Since the raw material components for cosmetics to be adsorbed become various and miscellaneous, the powder surface characteristics become non-uniform,
As a result, the feeling of bulkiness on the skin peculiar to the powder could not be sufficiently improved, and the makeup was liable to be damaged by sweating or the like.

A second point is that when a low molecular weight moisturizing agent such as propylene glycol or glycerin is mixed with the powder, it is adsorbed to the powder, but it is simply wet and the surface of the powder is Since it does not change the characteristics fundamentally,
The above problems cannot be solved.

<Means for Solving the Problems> Therefore, in order to solve the above-mentioned problems, the present inventors have conducted various investigations on surface treatment methods of powder having both excellent feel on the skin and durability of makeup. The inventors have found that the above object can be achieved by coating the surface of powder with a moisturizing polymer substance, and completed the present invention.

The makeup cosmetics according to the present invention based on such findings,
It is characterized by containing a coated pigment obtained by coating the pigment surface with at least one or more moisturizing polymer substances selected from chondroitin sulfate, elastin, elastin hydrolysates and alkali metal salts thereof.

The present invention will be described in detail below.

The moisturizing polymer substance applied to the present invention is selected from chondroitin sulfate, elastin, elastin hydrolysis and alkali metal salts thereof in view of affinity to the skin and smoothness of touch, and alone as a coating substance. Or 2
It is used as a mixture of two or more species.

The moisturizing polymer substance is extracted from a living body,
Further, any of those obtained by a chemical synthesis means and those produced by a microbial method can be used, and a commercially available one may be used.

In the present invention, the above-mentioned moisturizing polymer substance is coated on the surface of the powder as a coating substance to change the oil absorption property and the water absorption property originally possessed by the powder. It achieves the characteristics. Therefore,
The moisturizing polymer substance is required to stably coat the powder surface, and a substance having an average molecular weight of 5,000 or more is usually used. If the average molecular weight is less than 5,000, it cannot be said to be preferable because the powder surface cannot be stably covered and the powder surface characteristics cannot be maintained in a preferable state.

However, the fact that the coating substance contains a relatively low molecular weight substance alone does not hinder the intended effect.

Next, as the pigment used in the present invention, both inorganic powders and organic powders usually used in cosmetics can be used, but the inorganic powders are preferably used because of the great effect of improving the feel. Examples of such powder include white pigments such as talc, mica, kaolin, magnesium carbonate, calcium carbonate, calcium silicate, and titanium dioxide, red iron oxide, yellow iron oxide, black iron oxide, ultramarine blue, navy blue, chromium oxide, Colored pigments such as titanium dioxide-coated mica, yellow iron oxide-coated talc, black iron oxide-coated mica and the like can be mentioned.

Further, as these pigments, those having an average particle diameter in the range of 0.01 μ to 50 μ are preferably used. If the average particle size exceeds 50μ, it is easy to cause a feeling of strangeness on the touch surface when using a cosmetic,
Not preferable. The lower limit is not particularly limited, but if it is less than 0.01 μ, the fluidity is lowered and the handling is difficult.

Next, in the coated pigment according to the present invention, the ratio of the moisturizing polymer substance to the coated pigment is about 0.2: 100 to 30:10.
0 is preferably about 0.5: 100 to 15: 100 (weight ratio),
The limit is not specified.

Further, the coated pigment according to the present invention has a powder surface coated with a moisturizing polymer substance, and can be incorporated into a makeup cosmetic composition in the same manner as a conventional pigment formulation method.

Therefore, the present invention can be widely applied to make-up cosmetics containing powders, and as the cosmetics provided by the present invention, foundations, lipsticks, blushers, eyeliners, eye shadows, eyebrows, eyebrows, powders Examples include white powder, face powder and dusting powder. The content of the coating pigment at this time is arbitrarily selected according to the properties of the cosmetic, and is about 3 to 95% by weight, preferably 10 to 95% by weight.

Here, the method for producing the coated pigment according to the present invention will be described in detail.

The coated pigment is a known method, for example, a moisturizing polymer is dissolved in an aqueous solution containing a preservative in advance, and the pigment is added to this and mixed and stirred to uniformly disperse, while further continuing the mixing and stirring, An organic solvent such as ethanol or acetone is gradually added to this to deposit a moisturizing polymer substance on the powder surface, and then the solvent is distilled off from this slurry,
It can be produced by a method such as coarse pulverization to obtain a coated pigment.

In the above-mentioned production method, the method of mixing and coating the powder and the moisturizing polymer substance without using any organic solvent or water, that is, the dry method is not preferable because the coating is difficult to be uniform.

The production example of the coated pigment is shown below.

Production Example-1 Production of sodium chondroitin sulfate-coated sericite 50 g of sodium chondroitin sulfate and methylparaben
2.5 g is dissolved in purified water 5 to make a uniform solution, and 1 kg of sericite is added to this solution, and the mixture is sufficiently stirred until uniformly dispersed. Next, while continuously stirring, ethanol 5 was gradually added over 20 minutes, and then the stirring was continued for about 20 minutes, and water and ethanol were removed from the obtained slurry by using a centrifugal dehydrator. After drying at temperature, pulverize and pulverize sodium chondroitin sulfate coated sericite
Get 1 kg.

Production Example-2 Production of Elastin-Coated Titanium Mica 100 g of soluble elastin and 2.5 g of methylparaben are dissolved in purified water 5 to form a uniform solution, and 1 m of titanium mica is added to the solution.
Add g and stir well until uniformly dispersed. Next, while continuously stirring, acetone 2 was gradually added over 15 minutes, and then the stirring was continued for about 20 minutes, and water and acetone were removed from the obtained slurry by using a centrifugal dehydrator.
Further, after drying at a temperature of 60 ° C. or lower, it is pulverized to obtain about 1 kg of elastin-coated titanium mica.

Production Example-3 Production of Hydrolyzed Elastin-Coated Titanium Dioxide 1 kg of titanium dioxide is added to water 5 and mixed and stirred to uniformly disperse. Next, 100 g of hydrolyzed elastin is added, and the mixture is thoroughly stirred until uniform. Continue stirring with ice cooling, slowly add methanol 5 to it, continue stirring for about 20 minutes, adsorb hydrolyzed elastin on the powder surface, then filter and dry at 50 ° C. About 1 kg of hydrolyzed elastin-coated titanium dioxide was obtained.

Production Example-4 Production of Hydrolyzed Elastin-Coated Titanium Dioxide 10 g of hydrolyzed elastin was added to water 3, stirred well and dissolved to obtain a uniform solution.
Add g, mix and stir, and disperse uniformly. Next, continue to stir while cooling with ice, slowly add methanol 4 dropwise to it, and continue stirring for about 20 minutes to adsorb hydrolyzed elastin on the powder surface, then filter and dry at 50 ° C. By doing so, about 1 kg of hydrolyzed elastin-coated titanium dioxide was obtained.

<Evaluation Test> Next, in order to prove the superiority of the cosmetics of the present invention (cosmetics of Examples 1 and 2 described later), sensory evaluation was performed and the results are shown in Table 1. At this time, as a control product, each cosmetic was prepared by blending an uncoated pigment (inner core substance of the coated pigment) instead of the coated pigment used in the present invention, and sensory-evaluated.

The test method is as follows.

Sensory test: A panel of 10 men and women mixed together evaluated the following 4 items as sensory evaluation items: makeup sustainability, skin adhesion, smoothness on the skin, and a feeling of bulkiness. The average value of 10 persons was used as the evaluation point.

As described above, when the cosmetic of the present invention is applied on the skin,
It has excellent makeup durability, and also has excellent sensory characteristics such as adhesion to the skin, smoothness of growth on the skin, and a feeling of bulkiness. Also, considering the high level of safety, it can be seen that the coated pigment according to the present invention is a powder having excellent properties not found in conventional cosmetic pigments.

<Examples> Next, examples of the present invention will be described.

Example-1 Powder foundation (parts by weight) (A) Sodium chondroitin sulfate-coated sericite of Production Example-1 66.5 Elastin-coated talc prepared in the same manner as in Production Example-2 10.0 Sodium hyaluronate-coated titanium dioxide 8.0 Yellow iron oxide 5.0 Valve handle 2.0 Squalane 5.0 (B) Methyl polysiloxane 3.0 Ethyl paraben 0.2 Perfume 0.3 (Production method) The formulation of (A) above is uniformly mixed with a Henschel mixer and ground with a grinder. The above-mentioned formulation (B) is added thereto, and the mixture is uniformly mixed with a Henschel mixer, pulverized with a pulverizer, and pressed into a medium plate to obtain a product.

Example-2 Cake-like eye color (parts by weight) (A) Sodium hyaluronate-coated talc 46.5 Kaolin 5.0 Zinc stearate 3.5 Hydrolyzed elastin-coated titanium dioxide 18.0 of Production Example-4 Black iron oxide 4.0 Valve pattern 10.0 Mica titanium 8.0 Beeswax 1.5 ( B) Cetanol 0.8 Liquid paraffin 2.5 (C) Perfume 0.2 (Production method) The formulation of (A) above is mixed at high speed with a high speed mixer (Henschel type mixer) for 2 minutes, and then crushed and mixed with a crusher. This is mixed at 80 ° C. with the formulation of (B) at low speed in a Henschel mixer for 5 minutes, cooled to 20 ° C., the flavor of (C) is added, and the mixture is mixed at low speed for 2 minutes. This product is crushed by a crusher, then taken out and pressed.

Example-3 Teak color parts by weight (A) Elastin-coated titanium mica of Production Example-2 25 Sodium hyaluronate-coated talc 44.6 Nylon powder 10 Iron yellow oxide 6 Valve handle 3 (B) Methylpolysiloxane 4 Methylparaben 0.2 Squalane 7 Fragrance 0.2 (Production Method) The formulation of (A) above is uniformly mixed with a Henschel mixer and pulverized with a pulverizer. The above-mentioned formulation (B) is added to this, and uniformly mixed and pulverized by a Henschel mixer and mixed. This was slowly mixed with the formulation of (B) above at 70 ° C for 5 minutes in a Henschel mixer, and after cooling to 20 ° C, (C) above.
Add perfume and mix gently for 2 minutes. This product is crushed by a crusher, then taken out and pressed.

Example-4 Foundation parts by weight (A) Sodium chondroitin sulfate-coated sericite 25 of Production Example-1 25 Talc coated with sodium hyaluronate 25 Elastin-coated titanium mica of Production Example-2 15 Hydrolyzed elastin-coated titanium dioxide of Production Example-3 9 Yellow iron oxide 3 Rouge 0.8 Black iron oxide 0.3 Methylparaben 0.2 (B) Squalane 10 Octyldodecyl oleate 5 Perfume 0.3 (Production method) Production was carried out in the same manner as in Example-1.

Example-5 Dusting powder parts by weight (A) Sodium chondroitin sulfate-coated sericite of Production Example-1 25 Hydrolyzed elastin-coated titanium dioxide of Production Example-4 17 Hydrolyzed elastin coating produced in the same manner as Production Example-4. Talc 50 (B) Squalane 7.7 Fragrance 0.3 (Production Method) The formulations of (A) and (B) above are uniformly mixed with a Henschel mixer and ground with a grinder to obtain a product.

Claims (2)

[Claims] 1. A make-up containing a coated pigment obtained by coating the surface of a pigment with at least one moisturizing polymer selected from chondroitin sulfate, elastin, hydrolyzate of elastin and alkali metal salts thereof. Cosmetics. 2. The makeup cosmetic according to claim 1), wherein the content of the coating pigment is 3 to 95% of the total weight of the makeup cosmetic.