JPS62169712A - Makeup cosmetic - Google Patents

Abstract

PURPOSE:To makeup cosmetic, containing a coated pigment prepared by coating the surface thereof with a humectant high polymer and having both improved touch and makeup durability on the skin. CONSTITUTION:A makeup cosmetic containing a coated pigment prepared by coating the surface thereof with a humectant high polymer, e.g. hyaluronic acid, chondroitin sulfate, collagen, collagen hydrolyzate, elastin, elastin hydrolyzate, fibronectin, etc., in an amount of 3-95wt% based on the total weight. An inorganic power, e.g. talc, mica, TiO2, red iron oxide, black iron oxide or prussian blue, having 0.01-50mu average particle diameter is preferred for the pigment coated with the humectant high polymer from the viewpoint of improving effect. A wet method for previously dissolving the humectant high polymer in an aqueous solution containing a preservative, adding a pigment, adding an organic solvent while uniformly dispersing the pigment and depositing the high polymer on the surface, etc., is preferred for a method for producing the coated pigment.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a make-up cosmetic composition that has an unprecedentedly excellent feel and is characterized by containing a coated pigment in which the surface of the pigment is coated with a moisturizing polymeric substance.

Conventionally, makeup cosmetics containing powder have, for example,
Like a cake-like foundation, it is composed of pigments, oily surfactants, water, heat-retaining agents, etc., and has too strong water-absorbing properties, so it absorbs more sebum and water from the skin than necessary, making the skin dry. This was the cause of such problems. Furthermore, when applied to the skin, it feels hard, resulting in poor adhesion and a loss of moist feel, making it impossible to apply with a smooth touch. This feeling of dryness is particularly noticeable in seasons when the air is dry, and has become a problem. In order to solve this problem, attempts have been made in the past to add moisturizers and the like to cosmetics. That is, polyhydric alcohols such as propylene glycol and glycerin were added to cosmetics in an attempt to eliminate the above-mentioned dryness of the skin through their moisturizing ability. However, these attempts were unsatisfactory in the following two respects.

That is, the first point is that when manufacturing cosmetics containing powder by simply mixing a heat insulating agent with the powder along with other ingredients, it may not adhere to the surface of the powder or Since the cosmetic raw material adsorbed consists of many different components, powder deposits are likely to occur. Second
Regarding this point, when a low molecular weight heat insulating agent such as propylene glycol or glycerin is mixed with powder, it will be adsorbed to the powder, but it will be in a mere wet state. Since there are no fundamental changes, the above-mentioned problems have not been solved yet.

Therefore, in order to solve the above problems, the present inventors investigated various surface treatment methods for powders that have both an excellent feel on the skin and long-lasting makeup. The present invention was completed by discovering that the above object can be achieved by coating the surface.

That is, the present invention provides a make-up cosmetic characterized by incorporating one or more coated pigments obtained by coating the surface of the pigment with one or more selected from moisturizing polymeric substances. The moisturizing polymer material, which is the main coating material for the coating applied to the water-sprinkling invention, is coated on the surface of the powder, thereby improving the oil-absorbing and water-absorbing properties that the powder originally has. , thereby achieving novel organoleptic properties that have never existed before. Once upon a time,
The moisture-retaining polymeric substance described above is required to stably coat the surface of the powder, and usually one with an average molecular weight of 5,000 or more is used. If the average molecular weight is 5,000 or less, the powder surface cannot be stably coated and the powder surface characteristics cannot be maintained in a favorable state, and therefore it cannot be used in the present invention. However, the fact that these relatively low molecular weight substances are contained in the coating material itself does not impede the effects of the present invention. Further, the above-mentioned moisturizing polymeric substance is particularly preferably a moisturizing polymeric substance extracted from a living body in terms of its affinity for the skin and its smooth feel. Examples of such substances include hyaluronic acid, chondroitin sulfate, collagen hydrolyzate, and elastin.

Of course, it goes without saying that the present invention also includes makeup cosmetics containing a coated pigment coated with a biological extract containing the above-mentioned moisturizing polymeric substance.

It should be noted that the above-mentioned moisturizing polymeric substance can be used in the present invention regardless of whether it is extracted from a living body, newly synthesized, or made by microbial methods. , commercially available ones can be used.

Next, as the pigment used in the present invention, both inorganic powders and organic powders commonly used in cosmetics can be used, but inorganic powders are preferably used because they have a large effect of improving the feel. Examples of such powder include colored pigments such as talc, mica, kaolin, mica coated with titanium oxide, talc coated with yellow iron oxide, and mica coated with black iron oxide.

In addition, in the present invention, these pigments have an average particle size of 0.
, 01μ to 50μ is preferably used.

If the average particle diameter exceeds 50 μm, it is undesirable because it tends to give a feeling of discomfort when using the cosmetic. Further, although the lower limit is not particularly restrictive, if it is less than 0.01μ, the fluidity decreases and handling becomes difficult.

Next, in the above-mentioned coated pigment, the ratio of the moisture-retaining polymer substance to the coated pigment is approximately 0.2:100 to 30:
100, preferably about 0.5:100 to 15:100 (weight ratio), but the limit is not specified.

Next, the coated pigment used in the present invention has a powder surface coated with a moisturizing polymer substance, and can be incorporated into makeup cosmetics in the same manner as conventional pigments. can. Therefore, the present invention provides makeup cosmetics containing powder such as wide eye liner, eye shadow, eyebrow, eyebrow powder, powder powder, face powder, etc.
Examples include dusting powder. Further, the amount of the coated pigment is arbitrarily selected depending on the properties of the cosmetic,
It is approximately 3 to 95% by weight, preferably 10 to 95% by weight.

Next, the method for producing the coated pigment used in the cosmetic composition of the present invention will be described in detail.

The above-mentioned coated pigment can be produced using a known method, for example, by dissolving a moisturizing polymer substance in advance in an aqueous solution containing a preservative, adding the pigment to this, mixing and stirring to uniformly disperse it, and then continuing to mix and stir. While gradually adding ethanol to this,
Add an organic solvent such as acetone to deposit a moisture-retaining polymer substance on the surface of the powder, and then mix the powder and moisture-retaining polymer substance in the above manufacturing method without using any organic solvent or water. The coating method, ie, the dry method, is not preferred because it is difficult to obtain a uniform coating. An example of manufacturing the above-mentioned coated pigment is shown below, but as mentioned above, in the present invention, known manufacturing methods other than the so-called dry method can be used.
The present invention is not limited to the following production examples.

Production Example-1 Production of sodium chondroitin sulfate coated sericite Dissolve 50 g of sodium chondroitin sulfate and 2.5 g of methyl paraben in 5.0 g of purified water to make a homogeneous solution. Add 1 KCI of sericite to this and stir thoroughly until uniformly dispersed. do. Next, while continuing to stir, ethanol 5
After gradually adding ρ for 20 minutes, stirring was continued for 20 minutes, and water and coated sericite (approximately IKC) were obtained from 1 q of slurry using a centrifugal dehydrator.

Production Example-2 Production of collagen-coated mica titanium Soluble collagen 1.00 Cl and methylparaben 2
．． 50 was dissolved in 5N purified water to form a homogeneous solution, mica titanium 1KCl was added thereto, and the mixture was thoroughly stirred until uniformly dispersed. Next, continue stirring and add acetone 2. Q to 1
After gradual addition over 5 minutes = 9 - continued stirring for 20 minutes, water and acetone were removed from the 1q slurry using a centrifugal dehydrator, and after roughly drying at a temperature below 60'C. , grinding] to obtain approximately I kg of lagen-coated mica titanium.

Production Example-3 Production of talc coated with sodium hyaluronate 80 g of sodium hyaluronate and 2.50 g of ethylparaben were dissolved in 5 g of purified water and dried with stirring at a temperature below a uniform solution to obtain about 1 KQ of talc coated with sodium hyaluronate. Ta.

Production example-4 Production water of hydrolyzed collagen-coated titanium dioxide 5.1)
Add titanium dioxide IKQ to and mix and stir to uniformly disperse. Next, add 100 Cl of hydrolyzed collagen and stir thoroughly until uniform.

Further, stirring was continued while cooling with ice, and 51% of methanol was added to this.
Slowly drop the mixture and continue stirring for 20 minutes.
Calo-hydrolyzed collagen was adsorbed onto the powder surface, then filtered, and further dried at 50°C to obtain a titanium dioxide-like IKg coated with hydrolyzed collagen.

Production example-5 Production of hydrolyzed collagen-coated titanium dioxide Add hydrolyzed collagen 10Q to 3 g of water, stir thoroughly to dissolve and make a homogeneous solution, add titanium dioxide IKC to this, mix and stir to disperse uniformly. let Next, while stirring was continued while cooling with ice, 49 methanol was slowly added dropwise thereto, and the mixture was dried at 50°C to obtain 1 q of hydrolyzed collagen-coated titanium dioxide-like KCl.

(The following is a blank space) Next, in order to prove the superiority of the cosmetics applied to the present invention (Examples 1 and 2), a sensory evaluation was conducted and the results are shown in Table 1. At this time, a non-coated pigment (inner core material of the N pigment) was prepared as a control amount in place of the coated pigment used in the present invention for each cosmetic and subjected to sensory evaluation.

The test method is as follows.

Sensory test: The four items of smoothness of elongation and roughness were evaluated according to the following criteria, and the average value of 10 people was used as the evaluation score.

(Hereinafter in the margin) Score 012345B Itomo (hereinafter in the margin) 1 ] 2 - Table-1 The numerical values are above the sensory test evaluation score, indicating that the cosmetic applied to the present invention has excellent makeup persistence when applied to the skin. It also has excellent organoleptic properties such as adhesion to the skin, smoothness of spread on the skin, and dry feel. In addition, considering its high level of safety, it can be seen that the coated pigment used in the present invention is a powder having excellent properties not found in conventional cosmetic pigments.

Next, examples of the present invention will be shown.

Example-1 Powder foundation Part by weight (A) Fundroitin sulfate of Production Example-1 66.5 Made in the same manner as Sodium-coated sericite Production Example-2 10,O Collagen-coated Talc Made in the same manner as Production Example-1 8.0 Sodium hyaluronate coated titanium dioxide yellow iron oxide 5.O valve Handle 2.0 Squalane 5.0 (B) Methylpolysiloxane 3.0 Ethylparaben
0.2 aroma
0.3 (Production method) The formulation of (A) above is mixed uniformly with a Henschel mixer and pulverized with a pulverizer. The above formulation (B) is added to this, mixed uniformly with a Henschel mixer, pulverized with a pulverizer, and pressed into a medium plate to form a product.

Example-2 Cake-like eye color Part by weight (A) Collagen-coated talc 46.5 Kaolin
5.0 Zinc Stearate
3.5 Hydrolyzed collagen of Production Example-4 18
．． 0 coated titanium dioxide black iron oxide 4.0 valve handle 10.0 mica titanium 8.0 beeswax
1.5(B) Setanol
0.8 liquid paraffin
2.5(C) Flavorings
0.2 (Production method) The formulation of (A) above is mixed at high speed for 2 minutes using a high-speed mixer (Henschel type mixer), and then ground and mixed using a grinder. This mixture is mixed at low speed for 5 minutes with the formulation (B) above in a Henschel mixer at 80°C, and after cooling to 20°C, the fragrance (C) above is added and mixed at low speed for 2 minutes. After pulverizing this material in a pulverizer, it is taken out and pressed.

Example-3 Cheek color Part by weight (A) Collagen coating of Production Example-2 25 Mica titanium sodium hyaluronate coating 44.6 Talc nylon powder 10 Yellow iron oxide
6 valve handle
3(8) Methylpolysiloxane 4 Methylparaben 0.2 Squalane
7 Flavors
0.2 The above formulation (A) is mixed uniformly with a Henschel mixer and pulverized with a pulverizer. The above formulation (B) is added to this, and the mixture is uniformly ground and mixed using a Henschel mixer. This was mixed at low speed with the formulation (B) above in a Henschel mixer at 70°C for 5 minutes, and after cooling to 20°C,
Add the flavoring agent (C) above and mix at low speed for 2 minutes. After pulverizing this material in a pulverizer, it is taken out and pressed.

Example-4 Foundation Part by weight (A)] Lagen-coated sericite 25 Sodium hyaluronate of Production Example-3 25 Collagen coating of Lithium-coated Talc Production Example-2 15 Hydrolyzed collagen of Mica Titanium Production Example-4 9 Coated titanium dioxide Yellow iron oxide 3 valve handle
0.8 Black iron oxide 0.3 Methylparaben 0.2 (B>Squalane 10 Octyldodecyl oleate 5 Fragrance
0.3 (!l! method) Produced in the same manner as in Example-1.

Example-5 dusting powder Parts by weight (A) Collagen-coated sericite 25 Hydrolyzed collagen of Production Example-5 17 Coated titanium dioxide Produced in the same manner as Production Example-5 50 Hydrolyzed collagen-coated talc (B) Squalane γ , 1 incense
Fee 0.3
(Manufacturing method) The formulations (A> and (B) above are mixed uniformly using a Henschel mixer and pulverized using a pulverizer to obtain a product.

Claims (1)

[Scope of Claims] 1) A coated pigment obtained by coating the surface of the pigment with one or more types selected from moisture-retaining polymeric substances.
A makeup cosmetic characterized by containing one species or two or more species. 2) The moisturizing polymer substance is one or a mixture of two or more selected from hyaluronic acid, chondroitin sulfate, collagen, collagen hydrolyzate, elastin, elastin hydrolyzate, fibronectin, salts thereof, derivatives thereof, etc. A makeup cosmetic according to claim 1). 3) The makeup cosmetic according to claim 1, which contains one or more coated pigments in a total amount of 3 to 95% based on the total weight of the makeup cosmetic.