KR102567350B1 - Cosmetic composition capable of forming a film with excellent strength and cosmetic including the same - Google Patents

Abstract

It relates to a cosmetic composition capable of forming a film having excellent tensile strength and a cosmetic comprising the same, and more specifically, the cosmetic composition is smoothly adhered to the human skin at a thin thickness and has excellent film strength.

Description

COSMETIC COMPOSITION CAPABLE OF FORMING A FILM WITH EXCELLENT STRENGTH AND COSMETIC INCLUDING THE SAME}

The present invention relates to a cosmetic composition capable of forming a film having excellent tensile strength and a cosmetic product comprising the same, and more specifically, the cosmetic composition is smoothly adhered to the human skin in a thin thickness and has excellent film strength. do.

Skin cells are the first line of defense responsible for innate immunity and include all barriers of the skin and mucous membranes covering the surface of our body. The skin plays an important role not only in immunity, but also in regulating homeostasis such as thermoregulation and protecting against external stimuli.

However, skin aging is easily progressed due to ultraviolet rays, electromagnetic waves, stress, lack of moisture, etc., and when skin aging progresses, it is not good for health, but it is not good for aesthetics, so interest in skin anti-aging is increasing. In particular, since skin moisturizing is related to skin aging, interest in skin moisturizing is increasing.

On the other hand, after applying a skin moisturizing product, it is important to ensure that the moisturizing effect lasts for a long time after application to the skin so that these moisturizing ingredients can exhibit a sufficient skin moisturizing effect. In addition, the demand for products with multiple functions at once is increasing rather than using various cosmetics in a busy life in modern society.

Korean Patent Publication No. 10-2018-0018904 relates to mask pack cosmetics with improved adhesion and moisturizing power, and gelation of contents (effective ingredients such as essence) deposited on a non-woven fabric sheet increases adhesion, so that contents such as essence flow It is possible to improve the phenomenon of dropping or falling of the non-woven fabric sheet, and as the non-woven fabric sheet, which is a support, is gelled, the skin is elastically pulled and the moisture retention is increased, thereby improving the adhesion and moisturizing power.

Korean Patent Publication No. 10-2016-0110769 relates to a gel mask pack composition, and gelation of contents (effective ingredients such as essence) deposited on a non-woven fabric sheet increases adhesion, so there is little phenomenon of dripping or falling of the non-woven fabric sheet. It can further enhance the effectiveness of effective ingredients (contents such as essence) and increase activity during the pack.

However, conventional mask packs and the like, including the prior literature, do not mention anything about maintaining the moisturizing component of the moisturizer for a long time. In addition, there is no particular mention about replacing several cosmetics having respective functions with one cosmetic product. In addition, since the non-woven fabric is used, it is difficult to attach for a long time, and a problem of discarding the non-woven fabric may occur later.

In other words, when living a busy life, modern people are indispensable for products containing multiple functions at once, rather than using various cosmetics. In addition, in the case of the mask pack disclosed in the above literature, since it is generally impossible to live a daily life with the mask pack attached, there is a need for cosmetics that enable external activities after being applied to the skin like a general skin. this is emerging

Accordingly, the inventors of the present invention developed a cosmetic composition containing polyurethane and acrylate having excellent adhesion to the skin while studying to solve the above problems, and the cosmetic composition as described above is thinly applied to the skin of the human body. The present invention was completed by finding that it adheres smoothly, can maintain a moisturizing effect for a long time, and can maintain excellent strength.

The present invention has been made to solve the above problems of the prior art, and its object is to provide a cosmetic composition containing a polymer solution, polyurethane (PU) and acrylate.

In addition, the purpose is to provide cosmetics containing the cosmetic composition.

As a technical means for achieving the above-described technical problem, one aspect of the present invention,

polymer solution; polyurethane (PU); And acrylate; and provides a cosmetic composition, characterized in that the tensile strength of 300gf / 25mm to 600gf / 25mm.

The polyurethane (PU) content may be 1 to 10 parts by weight based on 100 parts by weight of the polymer solution.

With respect to 100 parts by weight of the polymer solution, the content of the acrylate may be 1 to 10 parts by weight.

The polymer solution may include a solvent and polyvinyl alcohol (PVA).

With respect to 100 parts by weight of the solvent, the content of the polyvinyl alcohol (PVA) may be 1 to 10 parts by weight.

The polyurethane (PU) may have a weight average molecular weight of 50,000 to 100,000, and the polyvinyl alcohol (PVA) may have a weight average molecular weight of 50,000 to 100,000.

The cosmetic composition may further include a moisturizer.

The amount of the humectant may be 100 to 300 parts by weight based on 100 parts by weight of the polymer solution.

The cosmetic composition may form a film that prevents moisture evaporation when applied to the skin.

The membrane may be physically uniformly removable or washable with an aqueous solution.

The cosmetic composition may further include at least one additive selected from the group consisting of preservatives, whitening agents, sunscreens, antioxidants, anti-wrinkle agents, fragrances, pigments, and combinations thereof.

The adhesive strength of the cosmetic composition may be 100gf / 25mm to 400gf / 25mm.

In addition, another aspect of the present invention,

It provides a cosmetic comprising the cosmetic composition.

The cosmetic composition according to the present invention as described above is smoothly adhered to the human skin with a thin thickness and has high strength, so it may have an effect of maintaining a moisturizing effect for a long time. In addition, the cosmetic composition may form a film on the applied surface, that is, the applied skin (hereinafter referred to as skin). Therefore, it is possible to prevent problems such as peeling off or cracking of the film due to its high strength, and it may be that the entire film is easily removed without breaking into pieces when physically removing it.

In addition, by forming the film, there is an effect of blocking external contaminants such as fine dust adhering to the skin, and may have a UV blocking function or a blue light blocking function. In addition, depending on the additives added to the cosmetic composition, effects such as whitening function and wrinkle improvement function may be further exhibited.

Finally, the film has a property of being well soluble in an aqueous solution, for example, water. Therefore, when the film is to be removed, it can be very convenient because it can be removed simply by washing with an aqueous solution or the like.

1 is a photograph showing the excellent degree of exfoliation after 8 hours of a cosmetic composition according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail. However, the present invention can be implemented in many different forms, and the present invention is not limited by the embodiments described herein, and the present invention is only defined by the claims to be described later.

In addition, terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In the entire specification of the present invention, 'include' a certain element means that other elements may be further included without excluding other elements unless otherwise stated.

The first aspect of the present application is,

polymer solution; polyurethane (PU); And acrylate; and provides a cosmetic composition, characterized in that the tensile strength of 300gf / 25mm to 600gf / 25mm.

The second aspect of the present application is,

It provides a cosmetic comprising the cosmetic composition.

Hereinafter, the cosmetic composition according to the first aspect and the cosmetic according to the second aspect of the present application will be described in detail.

In one embodiment of the present application, the cosmetic composition may be generally used for cosmetics applied to the skin, and the cosmetic composition may preferably have a liquid or semi-solid formulation. On the other hand, the cosmetic composition may be used directly on uncoated skin, or may be used together with skin, essence, lotion, cream, etc. commonly used as basic cosmetics, or may be used after the use of basic cosmetics .

In one embodiment of the present application, the cosmetic composition may have an excellent tensile strength of 300gf / 25mm to 600gf / 25mm. Therefore, since it is smoothly applied to the skin of the human body with high strength, problems such as cracking or tearing may not occur. That is, after applying the cosmetic composition to the skin, even if the user makes a large movement, it is not easily peeled off or damaged, and excellent effects may be maintained continuously. In addition, when it is physically removed, problems such as additional face washing can be prevented because the entire film can be easily removed without fragmentation. In particular, in the case of a user with atopy or dry skin, it may be possible to maintain an excellent moisturizing effect for a long time by applying the cosmetic composition to any part of the body including the face where necessary.

Meanwhile, the tensile strength may be measured by applying a tensile load to a specimen using a tensile tester to measure the tensile strength of a material. The specimen had a size of 1 inch x 10 cm and the test speed was 12 inch/min. Since the cosmetic composition according to the present invention has excellent tensile strength by including polyurethane and acrylate, it has an effect of not tearing well when applied to the skin.

In one embodiment of the present application, the cosmetic composition may include a polymer solution. In this case, the polymer solution may include a solvent and polyvinyl alcohol (PVA). That is, the cosmetic composition may have excellent moisturizing power by including polyvinyl alcohol (PVA) in the polymer solution.

In one embodiment of the present application, the cosmetic composition may include polyurethane (PU) and acrylate. Since the polyurethane (PU) has excellent adhesion to human skin, the cosmetic composition containing it may be smoothly adhered to the skin with a thin thickness. In addition, since the polyurethane (PU) has a UV blocking function, The cosmetic composition containing this may also have an excellent sunscreen effect. On the other hand, the acrylate may be added as an organic thickener to improve adhesion to the skin, and the cosmetic composition may have excellent tensile strength by further including acrylate. In this case, the acrylate may be an acrylate/C10-30 alkyl acrylate crosspolymer.

In one embodiment of the present application, the cosmetic composition may have a viscosity of 10,000 to 40,000 cps. If the viscosity of the cosmetic composition is less than 10,000 cps, its strength is too weak to achieve the effect of the cosmetic composition having a high strength unique to the present invention, and if it exceeds 40,000 cps, the fluidity is higher than that within the above range. This is low, and there is a possibility of forming a thick film.

In one embodiment of the present application, the cosmetic composition may be in a liquid or semi-solid form. The cosmetic composition preferably has a thin liquid or semi-solid formulation, such as cosmetics commonly referred to as “skin” or “essence”. Since the cosmetic composition has a thin liquid or semi-solid formulation, it may have an advantageous effect in forming a thinner film compared to formulations with high viscosity, commonly referred to as "cream" or "gel".

In one embodiment of the present application, based on 100 parts by weight of the polymer solution, the polyurethane (PU) content may be 1 to 10 parts by weight, preferably 3 to 7 parts by weight, more preferably 5 parts by weight to 6 parts by weight. When the content of polyurethane (PU) is less than 1 part by weight relative to 100 parts by weight of the polymer solution, the content of polyurethane (PU) is too low, and the inherent effect that can be expressed by the inclusion of polyurethane (PU) as described above may not appear, and if it exceeds 10 parts by weight, the content of the polymer solution containing polyvinyl alcohol (PVA) may be too small, resulting in a deterioration in the moisturizing effect.

In one embodiment of the present application, with respect to 100 parts by weight of the polymer solution, the content of the acrylate may be 1 to 10 parts by weight, preferably 4 parts by weight to 8 parts by weight, more preferably 6 parts by weight It may be part to 7 parts by weight. If the content of the acrylate is less than 1 part by weight relative to 100 parts by weight of the polymer solution, the effect that can be expressed by the addition of acrylate as described above may not appear, and if it exceeds 10 parts by weight, relatively polyvinyl alcohol ( The content of the polymer solution containing PVA) is too low, which may cause a problem in that the moisturizing effect is lowered.

In one embodiment of the present application, the polymer solution may include a solvent and polyvinyl alcohol (PVA), wherein the solvent may be used without limitation as long as it is a solvent commonly used in cosmetics, preferably purified water, A solvent selected from the group consisting of hot spring water, glycerin, phenoxyethanol, hexanediol, and combinations thereof may be used.

In one embodiment of the present application, based on 100 parts by weight of the solvent, the content of the polyvinyl alcohol (PVA) may be 1 to 10 parts by weight, preferably 5 to 10 parts by weight, more preferably It may be 6 to 8 parts by weight. When the content of polyvinyl alcohol (PVA) is less than 1 part by weight relative to 100 parts by weight of the solvent, the content of polyvinyl alcohol (PVA) is too low, so that the polymer solution containing the polyvinyl alcohol (PVA) is smoothly mixed with the polyurethane (PU). A problem may occur, and if the content of the solvent exceeds 10 parts by weight, a problem may occur in dispersibility with the solvent due to a relatively low content of the solvent.

In one embodiment of the present application, the total content of the polyurethane (PU), polyvinyl alcohol (PVA), and acrylate may be 1 to 10 parts by weight, preferably 4 to 10 parts by weight, based on 100 parts by weight of the total cosmetic composition. It may be parts by weight, and most preferably 6 to 8 parts by weight. If the total content of polyurethane (PU), polyvinyl alcohol (PVA) and acrylate is out of the above range, the cosmetic composition containing them may not exhibit unique effects such as excellent strength, moisturizing effect, and UV blocking function. there is.

In one embodiment of the present application, the polyurethane (PU) may have a weight average molecular weight of 50,000 to 100,000, and the polyvinyl alcohol (PVA) may have a weight average molecular weight of 50,000 to 100,000. When the polyurethane (PU) has a weight average molecular weight of less than 50,000 but exceeds 100,000, or the polyvinyl alcohol (PVA) has a weight average molecular weight of less than 50,000 but exceeds 100,000, the moisturizing effect of the cosmetic composition is may be lowered In addition, when the weight average molecular weight of the polyurethane (PU) and polyvinyl alcohol (PVA) is within the above range, a cosmetic composition containing the polyurethane (PU) and polyvinyl alcohol (PVA) may have excellent elongation, elasticity, adhesion and air permeability.

In one embodiment of the present application, the cosmetic composition may further include a moisturizer. The moisturizer may use commonly used moisturizing ingredients, for example, Propylene Glycol, 1,2-Hexanediol, Trehalose, Betaine, Trimethylglycine, Caprylyl Glycol, Butylene Glycol, Aloe vera, Allantoin, Lactic Acid, Cetyl Alcohol, Arginine, Arbutin, Adenosine, Niacinamide, amino acid, cetearyl alcohol, ceramide, phenoxyethanol, hyaluronic acid (oligomer), hyaluronic acid (polymer), sodium PCA (sodium-PCA), hydrogenated castor oil (castor oil), A material selected from the group consisting of jojoba oil, petroleum jelly, mineral oil, vegetable oil, collagen, and combinations thereof may be used. Preferably, trehalose, betaine, arginine, allantoin, arbutin, adenosine, niacinamide, amino acid, hyaluronic acid (oligomer), hyaluronic acid (polymer), hexanediol (1,2-Hexanediol ), phenoxyethanol, citric acid, and combinations thereof. At this time, the hyaluronic acid (oligomer) converts hyaluronic acid (polymer) into ultra-low molecules to facilitate absorption into the skin, maximizes skin moisturizing effect, activates the stem cell function of the epidermis, and differentiates into skin cells. It may have an effect of promoting and preventing skin aging.

In one embodiment of the present application, the content of the humectant may be 100 to 300 parts by weight based on 100 parts by weight of the polymer solution, preferably 100 parts by weight to 200 parts by weight, and more preferably 140 parts by weight to 160 parts by weight. It may be part by weight. If the content of the humectant is less than 100 parts by weight relative to 100 parts by weight of the polymer solution, the moisturizing effect of the cosmetic composition containing the moisturizer may be too small, and if it exceeds 300 parts by weight, the polymer solution, polyurethane And since the content of acrylate is low, the inherent effect that can be expressed by including it may not appear.

On the other hand, the moisturizing ingredients may be used in combination with a solvent, and the solvent is a group consisting of purified water, hot spring water, glycerin, phenoxyethanol, hexanediol, and combinations thereof, the same as the solvent included in the polymer solution A solvent selected from may be used.

In one embodiment of the present application, the moisturizing agent is preferably 10 to 20 parts by weight of trehalose, 1 to 10 parts by weight of the betaine, 0.001 to 0.005 parts by weight of the arginine, and 0.1 to 0.1 to 0.005 parts by weight of the allantoin, based on 60 parts by weight of the solvent. 0.5 parts by weight, 0.5 to 3 parts by weight of the arbutin, 0.1 to 0.5 parts by weight of the adenosine, 1 to 10 parts by weight of the niacinamide, 1 to 10 parts by weight of the amino acid, 0.5 to 3 parts by weight of the hyaluronic acid (oligomer), the It may contain 5 to 15 parts by weight of hyaluronic acid (polymer), 0.1 to 3 parts by weight of the hexanediol (1,2-Hexanediol), and 0.1 to 1 part by weight of the phenoxyethanol. More preferably, 15 parts by weight of trehalose, 5 parts by weight of betaine, 0.002 to 0.004 part by weight of arginine, 0.2 part by weight of allantoin, 1 part by weight of arbutin, and 0.2 part by weight of adenosine, based on 60 parts by weight of the solvent , 1 to 5 parts by weight of the niacinamide, 1 to 5 parts by weight of the amino acid, 1 part by weight of the hyaluronic acid (oligomer), 9 parts by weight of the hyaluronic acid (polymer), 1 part by weight of the hexanediol (1,2-Hexanediol) part and 0.5 parts by weight of the phenoxyethanol.

Based on 60 parts by weight of the solvent, the trehalose is included in less than 10 parts by weight but more than 20 parts by weight, the betaine is included in less than 1 part by weight but more than 10 parts by weight, or the arginine is less than 0.001 parts by weight but less than 0.005 parts by weight part, the allantoin is less than 0.1 part by weight but more than 0.5 part by weight, the arbutin is less than 0.5 part by weight but more than 3 part by weight, the adenosine is less than 0.1 part by weight but more than 0.5 part by weight or the niacinamide is included in less than 1 part by weight but more than 10 parts by weight, the amino acid is included in less than 1 part by weight but more than 10 parts by weight, or the hyaluronic acid (oligomer) is less than 0.5 part by weight but more than 3 parts by weight or the hyaluronic acid (polymer) is less than 5 parts by weight but more than 15 parts by weight, the hexanediol is less than 0.1 parts by weight but more than 3 parts by weight, or the phenolethanol is 0.1 parts by weight When included in less than or greater than 1 part by weight, the moisturizing effect of the cosmetic composition may be reduced. In addition, if it is out of the above range, problems such as elongation, elasticity, adhesion and air permeability of the cosmetic composition containing the same may be reduced.

In one embodiment of the present application, the trehalose has cell membrane protection, moisture evaporation prevention and antioxidant effects, the betaine has a moisturizing effect, the allantoin has a skin moisturizing and soothing effect, the arbutin has a whitening and whitening effect, and the adenosine has Anti-inflammatory and anti-wrinkle effect, the niacinamide has a whitening function, the amino acid has a moisturizing effect, the hyaluronic acid has a moisturizing and wound healing effect, the hexanediol has a moisturizing and preservative effect, and the phenoxyethanol may have an antiseptic effect. there is.

In one embodiment of the present application, the oils may include at least one selected from jojoba, macadamia, vitamin E acetate, polysorbate 80, and caprylic/capric triglyceride.

In one embodiment of the present application, the oils are 20 to 40 parts by weight of the jojoba, 1 to 10 parts by weight of the vitamin E acetate, 10 to 20 parts by weight of the polysorbate 80 and the caramel based on 40 parts by weight of the macadamia nuts. It may include 5 to 15 parts by weight of prylic/capric triglyceride. Preferably, it may contain 30 parts by weight of the jojoba, 5 parts by weight of the vitamin E acetate, 15 parts by weight of the polysorbate 80, and 10 parts by weight of the caprylic/capric triglyceride, based on 40 parts by weight of the macadamia nuts. there is. With respect to 40 parts by weight of the macadamia, the jojoba is less than 20 parts by weight but more than 40 parts by weight, the vitamin E acetate is less than 1 part by weight but more than 10 parts by weight, or the polysorbate 80 is 10 parts by weight When included in less than 20 parts by weight or greater than 20 parts by weight, or less than 5 parts by weight or greater than 15 parts by weight of the caprylic/capric triglyceride, the moisturizing effect of the cosmetic composition may be reduced. In addition, if it is out of the above range, problems such as elongation, elasticity, adhesion and air permeability of the cosmetic composition containing the same may be reduced.

In one embodiment of the present application, the macadamia and jojoba have a moisturizing role, the vitamin E acetate has an antioxidant effect, the polysorbate 80 has a role as a solubilizer and an emulsifier, and the caprylic/capric triglyceride is a moisturizer And it may be one that serves as a preservative.

In one embodiment of the present application, the cosmetic composition may have a pH of 5 to 8, preferably 5.5 to 6. If the pH is less than 5 or greater than 8, the above range may be appropriate because skin may be sensitive to irritation.

In one embodiment of the present application, the cosmetic composition may further include at least one additive selected from the group consisting of preservatives, whitening agents, sunscreens, antioxidants, anti-wrinkle agents, fragrances, pigments, and combinations thereof. there is. In addition, caffeine, aloe vera leaf juice, carbomer, octafluoropentyl methacrylate, myristoyl pentapeptide-11, kaolin, bentonite, cholesterol, lecithin, capryl glycol, apple cell culture extract, myristoyl pentapeptide -8, Ethylhexylglycerin, Tangerine Seed Extract, Silk Amino Acid, Acetyl Hexapeptide-8, SH-Polypeptide-11, SH-Oligopeptide-1, Ethyl Ascorbyl Ether, Licorice Extract, Vitamin C, It may further include a material selected from the group consisting of coenzyme, sorbitol, methylparaben, propylparaben, methylpropanediol, phenylpropanol, retinol, perfume, and combinations thereof.

In one embodiment of the present application, the cosmetic composition may further include a thickening agent. The thickener is a substance that increases viscosity, and may mean a substance that increases viscosity by being added to a colloidal solution, a polymer solution, or the like. The thickener may include xanthan gum, cellulose gum, polyacrylamide, gum arabic, gum tragacanth, galactan, pectin, queen's seed extract, brown algae powder, dextran, pullulan, succinoglycan, casein, It may further include a material selected from the group consisting of albumin, polyvinylmethyl ether, glycyrrhizic acid, glycyrrhizinate, alginic acid, alginic acid salts, and combinations thereof.

In one embodiment of the present application, the adhesive strength of the cosmetic composition may be 100gf / 25mm to 400gf / 25mm, preferably 300gf / 25mm to 400gf / 25mm, more preferably 350gf / 25mm to 400gf / It may be 25 mm. In principle, the adhesive strength is determined by using a roller with a constant load (2 kg) to adhere the test piece tape to a stainless steel plate of a certain size from which foreign substances are removed after curing for a certain period of time by satisfying the constant temperature and humidity conditions in the standard, and then 180 ° or 90 ° It may be measured by a test method that peels off and measures the load value or strength value. The cosmetic composition according to the present invention may have an effect of adhering well to the skin due to excellent adhesion by including polyurethane (PU) and acrylate.

In one embodiment of the present application, the cosmetic composition may have an elongation of 150 to 300%, and may preferably have an elongation of 250%. On the other hand, the elongation may be measured by a method of measuring the elongation of a material by applying a tensile load to a specimen using a tensile tester. The specimen had a size of 1 inch x 10 cm and the test speed was 12 inch/min. The cosmetic composition according to the present invention may have an effect of excellent elasticity by increasing elongation by including polyurethane and acrylate.

In one embodiment of the present application, the cosmetic composition may have an air permeability of 500 to 20,000 g/m ² in 24hrs. In this case, the air permeability may be measured by allowing air to pass vertically under a certain area and pressure of the prepared film and measuring the amount of air permeated or the air flow rate for a certain area for a certain time. That is, the air permeability of the cosmetic composition as described above indicates an air permeability value almost similar to that of artificial skin, and the user may feel comfortable due to the excellent air permeability when applying it to the skin.

In one embodiment of the present application, the cosmetic composition may form a film that prevents moisture evaporation when applied to the skin. That is, the cosmetic composition may form a film when applied to the skin, and when applied on another cosmetic, the formed film may also have an effect of preventing evaporation of the active ingredient contained in the cosmetic. Therefore, the user first applies the cosmetic to the skin, and then additionally applies the cosmetic composition to achieve the effect of allowing the active ingredient contained in the primarily applied cosmetic to be absorbed well into the skin without evaporation. can On the other hand, since the cosmetic composition forms a film, it may be capable of blocking external contaminants such as fine dust that physically adheres to the skin, and may have a UV blocking function or a blue light blocking function. In addition, it may exhibit effects such as a whitening function and wrinkle improvement function depending on the additives added. In addition, the cosmetic composition may also have an effect of increasing the gloss of the skin because it forms a film having a constant surface by filling the curves formed on the skin, that is, skin irregularities.

In one embodiment of the present application, the film (film) formed due to the cosmetic composition may be physically uniformly removable or washable with an aqueous solution. That is, since the cosmetic composition has excellent strength, it may not be physically fragmented when removing it, and the entire film may be easily removed, and since it is formed of water-soluble materials, it may be removed even when washed with an aqueous solution. . Therefore, when the user removes the film, it can be more convenient because it can be easily removed by physically removing it with a hand or by washing one's face.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein.

Example . cosmetics Preparation of the composition (PU, PVA and acrylate include)

A cosmetic composition was prepared by mixing the compositions shown in Table 1 below.

[Table 1]

Meanwhile, the moisturizer was prepared by mixing the compositions shown in Table 2 below, and the content ratio thereof is also shown in Table 2 below.

[Table 2]

comparative example . cosmetics Preparation of the composition (polyurethane and acrylate include X)

A cosmetic composition was prepared using the same method as in the above example, except that polyurethane (PU) and acrylate were not included and the content of polyvinyl alcohol was mixed at 7.05 wt%.

Experimental example 1. Skin improvement sensory test

To investigate the effect of the cosmetic composition prepared according to the above example on skin changes, a skin application test was conducted as follows. The cosmetic composition according to the Example was applied to the skin of a group consisting of 10 test subjects (10 females) in their 10s to 50s without any skin disease or allergy. After about 20 minutes, a questionnaire was administered using a 5-point item scale method (5 points: very good, 4 points: good, 3 points: normal, 2 points: bad, 1 point: very bad) on the moisturizing power and skin elasticity of the test site. received, and the results are shown in Tables 4 and 5 below.

[Table 3]

As shown in Table 3, it was confirmed that the cosmetic composition according to the embodiment of the present invention had excellent effects evenly in terms of application, moisturizing, whitening, gloss, and skin elasticity when applied to the actual skin. In particular, application, moisturizing and It was confirmed that an excellent effect was exhibited in terms of gloss.

Experimental example 2. Adhesion test

In order to measure the adhesiveness of the cosmetic composition prepared in the above Examples and Comparative Examples, a roller with a constant load (2 kg) was used on a stainless steel plate of a certain size from which foreign substances were removed after curing for a certain time by meeting the standard constant temperature and constant humidity conditions. The test piece tape was adhered and peeled at 180 ° or 90 ° to measure the load value or strength value, and the result values are shown in Table 6 below.

[Table 4]

As shown in Table 4, it was confirmed that the cosmetic composition prepared according to the embodiment of the present invention had very excellent adhesive strength compared to the comparative example showing 180 gf / 25mm with adhesive strength of about 390 gf / 25mm. It was determined that this is because the cosmetic composition includes polyurethane (PU) and acrylate.

Experimental example 3. Tensile strength and elongation measurement experiment

In order to measure the tensile strength and elongation of the cosmetic composition prepared in the above Examples and Comparative Examples, a tensile load was applied to the specimen using a tensile tester to measure the tensile strength and elongation of the material, and the results are shown in Table 5 below. . At this time, the size of the specimen was 1 inch x 10 cm, and the test speed was conducted under the condition of 12 inch/min.

[Table 5]

As shown in Table 5, it was confirmed that the cosmetic composition according to the embodiment of the present invention had higher tensile strength and elongation than the comparative example. Therefore, it can be inferred that the film formed when the cosmetic composition is applied to the skin is not easily damaged because it has a high tensile strength, and can have excellent flexibility by having a high elongation. Therefore, it was expected that the film could well maintain its shape even if the user made a large movement after applying it.

Experimental Example 4. Peeling Degree Measurement Experiment

In order to measure the excellent exfoliation degree of the cosmetic composition prepared in the above example, take a picture after applying the cosmetic composition to the skin (face) of the human body (upper picture in FIG. 1), and take a picture of exfoliation after 8 hours (Fig. 1) is shown in FIG. 1.

As shown in Figure 1, it was confirmed that the cosmetic composition prepared according to the embodiment of the present invention was well applied to the skin (face) of the human body, and it was confirmed that the entire film was well peeled without fragmentation even when peeled afterwards. .

In the above, the present invention has been described in detail with preferred embodiments with reference to the drawings, but the scope of the technical idea of the present invention is not limited to these drawings and embodiments. Therefore, various modifications or equivalent ranges of embodiments may exist within the scope of the technical idea of the present invention. Therefore, the scope of the technical idea according to the present invention should be interpreted by the claims, and the technical idea within the equivalent or equivalent range should be construed as belonging to the scope of the present invention.

Claims (13)

In the cosmetic composition containing a polymer solution, polyurethane (PU), acrylate and a moisturizing agent,
Based on 100 parts by weight of the polymer solution, 1 to 10 parts by weight of the polyurethane (PU), 1 to 10 parts by weight of the acrylate, and 100 to 300 parts by weight of the humectant,
The polymer solution includes a solvent and polyvinyl alcohol (PVA), and the content of the polyvinyl alcohol (PVA) is 1 to 10 parts by weight based on 100 parts by weight of the solvent,
The cosmetic composition is a cosmetic composition, characterized in that the tensile strength of 300gf / 25mm to 600gf / 25mm, adhesive strength of 100gf / 25mm to 400gf / 25mm.
delete delete delete delete According to claim 1,
A cosmetic composition, characterized in that the polyurethane (PU) has a weight average molecular weight of 50,000 to 100,000, and the polyvinyl alcohol (PVA) has a weight average molecular weight of 50,000 to 100,000.
delete delete According to claim 1,
The cosmetic composition is a cosmetic composition, characterized in that to form a film to prevent evaporation of moisture when applied to the skin.
According to claim 9,
The cosmetic composition, characterized in that the film is physically uniformly removable or washable with an aqueous solution.
According to claim 1,
The cosmetic composition further comprises at least one additive selected from the group consisting of preservatives, whitening agents, sunscreens, antioxidants, anti-wrinkle agents, fragrances, pigments, and combinations thereof Cosmetic composition.
delete A cosmetic comprising the cosmetic composition of claim 1.