TW201836581A - Anti-pollution cosmetic composition comprising spherical powder - Google Patents

Abstract

The present invention relates to an anti-pollution cosmetic composition comprising at least 20wt% of a spherical powder, based on the total weight of the composition. The spherical powder present in a large amount in the composition improves the application properties of the formulation, allowing uniform coating thereof on the skin surface, and also achieves an excellent effect of filling gaps on the skin surface. Further, it forms fine protrusions on the skin surface, thereby achieving excellent anti-pollution effects.

Description

Antifouling cosmetic composition containing spherical powder

The present specification discloses an antifouling cosmetic composition which is excellent in dust avoiding effect for fine dust.

The accumulation of dust in the human body can cause the body's immunity to decline and may cause various diseases such as heart disease or respiratory diseases. It can even cause bronchial stenosis. Prolonged inhalation of dust increases the prevalence of asthma and lung disease and increases early mortality.

The skin that is at the outermost part of our body and is in direct contact with dust acts as a barrier between the organism and the environment. This barrier function is impaired when the skin is often directly exposed to contamination. In particular, it is 20 times smaller than the pores, which can easily penetrate the skin. In fact, it is known that air pollutants such as fine dust can profoundly affect skin health. In the short term, it will increase premature aging, water loss, wrinkles and fine wrinkles. In the long run, it may irreparably damage the skin, causing the skin to lose its ability to protect the body from environmental factors, leading to serious diseases such as skin cancer.

Therefore, it is necessary to study a cosmetic that separates skin from dust, which is a toxic substance harmful to the skin and sometimes causes a fatal disease of the human body.

[technical problem]

In one aspect, one of the objects of the present invention is to prevent contaminants from adhering to the skin.

In another aspect, one of the objects of the present invention is to improve the gap filling effect of the cosmetic composition by adding a large amount of spherical powder to the cosmetic composition.

In another aspect, one of the objects of the present invention is to prevent or reduce skin contamination caused by fine dust. [Problem solution]

In one aspect, the present invention provides an antifouling cosmetic composition comprising 20% by weight of a spherical powder based on the total weight of the composition. [Advantageous Effects of Invention]

In one aspect, the antifouling cosmetic composition of the present invention minimizes penetration of dust (especially fine dust) into the skin. In particular, the spheroidal powder present in large amounts in the composition improves the applicability of the formulation to a uniform coating on the skin surface. It also achieves an excellent effect of filling the skin surface gap. Further, the particles in the spherical powder form stereoscopic microprotrusions on the surface of the skin to which they are applied, thereby minimizing dust adhesion on the skin surface. Further, when applied to the skin, the spherical powder prevents the dust from sticking to the skin as compared with the flake powder, thereby preventing the dust from penetrating into the skin. In particular, it prevents fine dust from penetrating to minimize skin irritation and heavy metal accumulation, thereby contributing to skin health.

Definition of Terms

The term "antifouling" as used herein refers to preventing or minimizing the attachment of contaminants (such as dust) to the skin or by removing contaminants from the skin to prevent or minimize the penetration of such contaminants temporarily attached to the skin. Into the skin. That is, when the antifouling cosmetic composition of the present invention is applied to the skin, the adhesion of the contaminant to the skin can be minimized due to its excellent gap filling effect. Moreover, it prevents dust from sticking to the skin compared to the flaky powder, thereby preventing the dust from penetrating into the skin.

As used herein, the term "dust" refers collectively to fine particles that are mixed in air, and generally refers to a floating material having a particle diameter of 10 mm or less. In particular, dust having a particle diameter of 10 μm or less is referred to as fine dust, and dust having a particle diameter of 0.1 μm or less is referred to as ultrafine dust. Dust contains substances derived from nature (such as sand, earth and pollen), or substances derived from industrial processes (such as carbon, carbon combustion products, metal salts and heavy metals). Dust may be in the form of fume, mist, smoke, steam or smog.

The term "particle group" as used herein refers to a set of particles.

The term "particle size" as used herein refers to the particle size of a particle. The "average particle diameter" of the particle group 1 to the particle group 2-2 means the average value of the particle diameters of the individual particles belonging to the particle group 1 to the particle group 2-2. The "average particle size" of the flake powder refers to the average of the diagonal lengths of the widest cross section of the particles.

The term "thickness" as used herein refers to the cross-sectional thickness perpendicular to the widest cross-section of the flake-like powder particles and means the shortest diameter.

The terms "including" and "comprising", as used herein, are used unless otherwise indicated. Description of illustrative specific embodiments

The invention will be described in detail below.

In an exemplary embodiment, the invention is directed to an antifouling cosmetic composition comprising at least 20% by weight of a spherical powder based on the total weight of the composition.

The spherical powder (particles having a spherical shape) has a smooth and light feeling when contained in a cosmetic powder composition. The spheroidal powder has the effect of diffusing light in all directions, so that skin sputum such as pores and pock marks can be well covered compared to the flaky powder. Therefore, a powder cosmetic composition containing a large amount of spherical powder can effectively create a natural skin tone. It also improves the retention of the cosmetic film and is therefore suitable for the fixing of the cosmetic film and the correction of the makeup.

Further, the inventors of the present invention have found that a cosmetic composition containing a large amount of spherical powder can improve the applicability of the formulation to uniform coating on the skin surface, and can also achieve an excellent effect of filling the skin surface gap. Further, the inventors of the present invention have found that the particles in the spherical powder form fine protrusions to minimize the dust adhering to the skin surface, thereby achieving an excellent antifouling effect.

In a particular embodiment, the spherical powder content may be at least 20 wt%, such as at least 25 wt%, at least 30 wt%, at least 35 wt%, at least 40 wt%, or at least 45 wt%, and up to 50 wt%. When the content is less than 20% by weight, insufficient formation of fine protrusions may cause insufficient gap filling effect and may cause insufficient antifouling effect. When the content exceeds 50% by weight, it may be difficult to prepare the composition into a powder type of a compressed powder formulation due to pores and repulsion between powder particles during preparation.

In a specific embodiment, the spherical powder may include a particle group 1 having an average particle diameter of less than 5 μm and a particle group 2 having an average particle diameter of 5 μm or more, and the weight ratio of the particle group 1 to the particle group 2 may be 1:1.1 to 1:8. When the weight ratio is in the above range, particles of different sizes can be densely and uniformly coated to achieve an excellent effect of filling the skin surface gap, and fine protrusions can be formed on the skin surface to prevent adsorption of contaminants and protect the skin.

For example, the particle size of the particle group 2 may be 50 μm or less, 45 μm or less, 40 μm or less, 35 μm or less, or 30 μm or less. When the particle size of the particle group 2 exceeds the above range, it may cause difficulty in compression molding and may cause formulation stability problems such as cracking of the formulation upon dropping.

For example, although not limited thereto, the weight ratio may range from 1:1.1 to 1:7.6, 1:1.2 to 1:7.2, 1:1.3 to 1:6.8, 1:1.4 to 1:6.4, 1:1.5 to 1:6, 1:1.6 to 1:5.6, 1:1.7 to 1:5.2, 1:1.8 to 1:4.8, 1:1.9 to 1:4.4, or 1:2 to 1:4.

In a specific embodiment, the spherical powder may include a particle group having an average particle diameter of less than 5 μm, a particle group 2-1 having an average particle diameter of 5 μm or more and less than 10 μm, and a particle group having an average particle diameter of 10 μm or more. 2-2, and the weight ratio of the particle group 1, the particle group 2-1 to the particle group 2-2 may range from 1:0.6:0.5 to 1:3:5. The particle diameter of the particle group 2-2 may be 50 μm or less, 45 μm or less, 40 μm or less, 35 μm or less, or 30 μm or less.

For example, although not limited thereto, the weight ratio may range from 1:0.6:0.5 to 1:2.8:4.8, 1:0.65:0.55 to 1:2.6:4.6, 1:0.7:0.6 to 1:2.4:4.4, 1:0.75:0.65 to 1:2.2:4.2, 1:0.8:0.7 to 1:2:4, 1:0.85:0.75 to 1:1.8:3.8, 1:0.9:0.8 to 1:1.6:3.6, 1: 0.95: 0.85 to 1: 1.4: 3.4, 1:1: 0.9 to 1: 1.2: 3.2, or 1:1.05: 0.95 to 1:1: 3.

In a specific embodiment, the spherical powder may include at least one selected from the group consisting of an inorganic particle, an organic particle, and an organic-inorganic composite particle.

Preferably, the inorganic particles are cerium oxide. The cerium oxide system has a highly oil-absorbing pore-shaped spherical powder, and thus exhibits the maintenance effect of the durability of the cosmetic film. It also has a low refractive index and therefore high transparency. In addition, it has the advantage of allowing other powders to be uniformly coated. However, the large use of cerium oxide makes compression molding difficult and may cause the skin to dry out. Accordingly, the amount of cerium oxide is preferably at most 30% by weight, more preferably at most 20% by weight, based on the total weight of the cosmetic composition.

Examples of the organic particles may include polystyrene, polymethylmethacrylate, polyethylene, nylon 6, nylon 12, an ethylene/acrylic acid copolymer, and a polymethacrylic acid. Methyl ester/ethylene glycol dimethacrylate copolymer, polyallyl methacrylate/ethylene glycol dimethacrylate copolymer, monoethylene glycol dimethyl Acrylate/lauryl methacrylate copolymer, a crosslinked acrylate/ethylhexyl acrylate copolymer, polyurethane, and combinations thereof. Among them, polymethyl methacrylate and ethylene/acrylic acid copolymer are preferred in terms of ensuring formability, light spreadability, and enhancing the effect of the cosmetic film when the compressed powder preparation is formed.

Examples of the organic-inorganic composite particles may include polymethylsilsesquioxane, a silicone resin powder, an organosilicon particle, an organically treated cerium oxide, and combinations thereof.

The resin resin powder may especially be an organopolysiloxane elastomer powder coated with a resin such as a silsesquioxane resin, more particularly a monovinyl polydimethyl group. A vinyl dimethicone/methicone silsesquioxane crosspolymer. Although not limited thereto, the organic cerium particles may be, for example, a methyl silanol/silicate crosspolymer, and the organically treated cerium oxide on the surface may be, for example, a polydimethyl group. Oxide coated ruthenium oxide.

In the cosmetic composition of the present invention, the spherical powder may be a mixture of more than one powder type. The combination may vary without limitation. Preferably, however, it comprises more than one inorganic particle type and more than one organic particle type. Here, the content of the inorganic particles is preferably from 10 to 30% by weight of the total composition, and the content of the organic particles is preferably from 5 to 20% by weight of the total composition. When the composition satisfies the above numerical range, the compressed powder formulation can be formed without wet forming and exhibits excellent drop stability. Further, when the inorganic and organic particles are contained in the above numerical range, they satisfy the weight ratio of the particle group 1 to the particle group 2-2 of the spherical powder.

In a specific embodiment, the spherical powder may include an inorganic particle and an organic particle. Here, the inorganic particles may be cerium oxide and the organic particles may be an ethylene/acrylic acid copolymer.

In a specific embodiment, the spherical powder may include an inorganic particle and an organic particle. Here, the inorganic particles may be cerium oxide and the organic particles may be a combination of polymethyl methacrylate and ethylene/acrylic acid copolymer.

In a specific embodiment, the spherical powder may include at least one selected from the group consisting of cerium oxide, polymethyl methacrylate, and a monoethylene/acrylic acid copolymer.

In a specific embodiment, the cosmetic composition may further comprise a sheet of powder and an oleaginous binder.

The flake powder is used to impart compression formability, covering power, skin adhesion, and adhesion. In the present invention, the type of the flake powder is not particularly limited, and a flake powder which is commonly used in the art can be used.

In terms of compression moldability, covering power, skin adhesion, and adhesion, a preferred flake powder has an average thickness of 0.1 to 1.0 μm, an average particle diameter of 1 to 100 μm, and an average particle diameter divided by an average thickness to obtain an aspect ratio (aspect Ratio) 10 or more.

In a specific embodiment, the flake powder is at least one selected from the group consisting of talc, mica, boron nitride, barium sulfate, Alumina, sericite, kaolin and synthetic fluorphlogopite. Preferably, the flake powder is talc. Talc is inelastic. When the average particle diameter is less than 10 μm, almost all types of talc can be formed. Since talc has less dust and high drop stability after formation, it is suitable for forming a compressed powder formulation. The larger the size of the talc, the lower the compactness and the lower the formability. Therefore, it is preferred to use talc powder having an average particle diameter of from 4 to 9 μm, more preferably from 6 to 7 μm.

In a particular embodiment, the flake powder content may be at least 40 wt% and less than 80 wt% based on the total weight of the composition. When the flake powder content is less than 40% by weight, it is difficult to configure it as a compressed powder. When the flake powder content is 80% by weight or more, the spherical powder content becomes low, so that a less aggregated cosmetic composition cannot be obtained. Therefore, the flake powder content should be appropriately adjusted within the above range.

The oily binder is used to increase the bonding force between the powder particles. In the present invention, the type of the oily binder is not particularly limited, and a flake powder which is commonly used in the art can be used.

In a specific embodiment, the oleaginous binder may be at least one selected from the group consisting of: an ester-based oil selected from the group consisting of hexyl laurate, carbonic acid Dicaprylyl carbonate, diisostearyl malate, butylene glycol dicaprylate/dicaprate, cetyl ethylhexanoate Cetyl ethylhexanoate), triethylhexanoin, dicetearyl dimer dilinoleate, caprylic/capric triglyceride, a group consisting of polyglyceryl-2 triisostearate and pentaerythrityl tetraisostearate; a hydrocarbon-based oil selected from the group consisting of polybutylene a group consisting of polybutene, hydrogenated polyisobutene, and phytosqualane; and a silicone-based oil selected from the group consisting of phenyl polytrimethyl Phenyl trimethicone and poly Silicon methyl siloxane groups (Dimethicone) composed of. Among them, diisostearyl malate or polydimethyl siloxane is preferable in terms of formability and feeling of use.

In a specific embodiment, the oleaginous binder content may be from 5 to 20% by weight, more preferably from 5 to 10% by weight based on the total weight of the composition. When the oily binder content is less than 5% by weight, it makes dry compression molding difficult, landing stability is reduced, and powder powdering is caused. When the oily binder content exceeds 20% by weight, the powder is aggregated. Therefore, the oily binder content should be appropriately adjusted within the above range.

At the same time, the cosmetic composition of the present invention may further comprise a pigment which masks skin defects and imparts brilliance. The type of the pigment is not particularly limited, and white and colored inorganic or organic particles commonly used in the art can be used.

Examples of the inorganic pigment include titanium oxide, surface-treated or untreated zirconia or cerium oxide, zinc oxide, iron oxide (black, yellow or red), chromium oxide, manganese violet, ultramarine blue, chromium hydrate, iron Ferric blue, aluminum powder and copper powder.

Examples of the organic pigment include a cochineal extract dye, an azo dye, an anthraquinone dye, an anthraquinone dye, a xanthene dye, an anthraquinone dye, a quinoline dye, a triphenylmethane dye, and a fluoran. dye.

In the present invention, the pigment content is not particularly limited. However, it is preferably 0.1 to 10% by weight based on the total weight of the composition.

Moreover, the cosmetic composition of the present invention may further comprise at least one of: a fat component, a moisturizer, a lubricant, a surfactant, an organic and inorganic pigment, an organic powder, a UV absorber, a preservative, a thickener, a bactericide , antioxidants, botanical extracts, pH adjusters, alcohols, colorants, fragrances, blood circulation stimulants, skin coolants and antiperspirants. .

The term "cosmetic" as used herein may refer to any material that has a medical function in addition to a cosmetic function.

In a specific embodiment, the cosmetic composition may be a compressed powder formulation, more specifically a powder pact, a foundation, a two-way cake, an eyebrow. , eyeshadow, blusher, highlighter, concealer or other cosmetic products.

In a specific embodiment, the cosmetic composition can prevent fine dust having a particle diameter of 10 μm or less. The particle diameter is not limited and may be 100 μm or less, 90 μm or less, 70 μm or less, 50 μm or less, 30 μm or less, 20 μm or less, 15 μm or less, or 10 μm or less. The cosmetic composition of the present invention can smoothly apply spherical powder of various sizes to the skin, thereby achieving an excellent gap filling effect and preventing fine dust. Further, it forms fine protrusions to prevent fine dust from adhering.

Method for preparing antifouling cosmetic composition

The antifouling cosmetic composition of the present invention is prepared by the steps of mixing, pulverizing, filtering and then compressing the shaped raw material.

The mixing and pulverizing step is not particularly limited, and a method generally used in the art can be used. For example, a mixer in which the impeller rotates at a high speed to mix contents, such as a food blender and a Henschel mixer, may be used. Moreover, it is possible to use at least one selected from the group consisting of: a ball mill, a disintegrator in an oscillators, a screen mill, a powdering machine (atomizer); and a hammer mill, an attrition mill, a pin mill, and an air jet mill in a pulverizer.

The method of compression molding is not particularly limited, and a method generally used in the art may be used. For example, the formation method may be performed using a press machine.

The hardness of the cosmetic composition prepared by the above method can be measured using a Teclock Type A durometer. The cosmetic composition preferably has a hardness of from 10 to 60, more preferably from 30 to 50.

[Examples] Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the following examples are for illustrative purposes only to facilitate understanding of the invention, and the scope of the invention is not limited thereto.

EXAMPLES : Preparation of an antifouling cosmetic composition According to the composition of Table 1, the cosmetic compositions of Example 1, Example 2, Comparative Example 1 and Comparative Example 2 were prepared, and the spherical powder of the composition of Table 1 was analyzed. Particle group. The results are shown in Table 2. 1) Weigh the spherical powder, flakes and other ingredients in a mixer and mix for 2 minutes. 2) Weigh the oily binder and heat it to 70 to 80 °C. 3) The mixture obtained in 2) was sprinkled with a Henschel mixer and crsuhing for 1 to 2 minutes (500 to 1000 rpm). 4) Mix the mixture obtained in 3) for 2 minutes at high speed (1500 to 2000 rpm). 5) The mixture obtained in 4) was pulverized with 15 horsepower and then filtered. 6) A predetermined amount of the resultant was placed on a metal plate, and then formed at about 20 kgf/cm ^{2 for} about 5 seconds to prepare a powder pact. Table 1 Table 2

Test example

Test Example 1: Evaluation of gap filling effect and formation of fine protrusions The cosmetic compositions of Example 1 and Comparative Example 1 were applied to artificial leather, and then photographed using a scanning electron microscope (SEM), a digital camera, and a 3D scan. surface.

1A, FIG. 1B, FIG. 2A and FIG. 2B, the cosmetic composition of Example 1 can more closely fill the artificial leather gap to form a uniform and smoother surface than the cosmetic composition of Comparative Example 1. Makeup film. Therefore, it is possible to prevent contaminants from adhering to the skin gap when actually applied to the skin.

As can be seen from Fig. 3A and Fig. 3B, the surface coated with the cosmetic composition of Example 1 formed more fine protrusions than the surface coated with the cosmetic composition of Comparative Example 1. Therefore, the adhesion of fine dust can be prevented as compared with a flat surface.

Test Example 2: Evaluation of prevention of adhesion of fine dust A white artificial leather was applied to a slide glass with a double-sided tape, and the artificial sebum was uniformly applied with a spatula and the composition of Table 3 below. A cosmetic composition of the article to prepare a sample that mimics the skin. table 3

The artificial leather was placed in a fine dust convection box (75 cm X 75 cm X 100 cm), weighing 0.5 g of carbon black and introduced into the convection box, followed by convection for 10 minutes. The sample was then taken out and then surface blow was performed thereon. Thereafter, the state of the samples was compared before and after the convection test.

It can be visually observed from Fig. 4B that the carbon black adheres to the oil-coated artificial skin (simulating sebum). Further, it can be seen that the artificial leather coated with the cosmetic compositions of Comparative Example 1 and Comparative Example 2, respectively, was not significantly different from the above case. On the contrary, almost no black portion was observed from Fig. 4A showing the artificial leather coated with the cosmetic composition of Example 1. Although it is difficult to distinguish the difference from the black-and-white image, the image analysis comparison of the white and black areas revealed that the white density of the artificial skin of the cosmetic composition coated with the cosmetic composition of Example 1 was higher than that of the artificially colored leather showing only the oil-coated artificial skin. White density indicates a 30% reduction in carbon black adhesion.

no

Fig. 1A is a scanning electron microscope (SEM) photograph of an artificial leather coated with the antifouling cosmetic composition of Example 1 of the present invention. Fig. 1B is a scanning electron microscope (SEM) photograph of a synthetic leather coated with the cosmetic composition of Comparative Example 1. Fig. 2A is a photograph of a digital camera of the surface of a synthetic leather coated with the antifouling cosmetic composition of Example 1 of the present invention. Figure 2B is a photograph of a digital camera of the surface of a synthetic leather coated with the cosmetic composition of Comparative Example 1. Fig. 3A shows an enlarged 50-fold 3D scan of an artificial leather coated with the antifouling cosmetic composition of Example 1 of the present invention, wherein the height difference is expressed by color. Figure 3B shows an enlarged 50X 3D scan of the artificial skin coated with the cosmetic composition of Comparative Example 1, wherein the height difference is expressed in color. Fig. 4A is a photograph of an artificial leather coated with oil and the antifouling cosmetic composition of Example 1 of the present invention after convection in a fine dust convection box for 10 minutes. Figure 4B is a photograph of an oil-coated artificial hide convected in a fine dust convection box for 10 minutes. 4C and FIG. 4D are photographs of the artificial skin coated with the cosmetic compositions of Comparative Example 1 and Comparative Example 2, respectively, convected in a fine dust convection box for 10 minutes.

Claims (13)

An antifouling cosmetic composition comprising: a spherical powder of at least 20% by weight based on the total weight of the composition. The antifouling cosmetic composition according to claim 1, wherein the spherical powder comprises a particle group 1 having an average particle diameter of less than 5 μm and a particle group 2 having an average particle diameter of 5 μm or more, and wherein the particle group 1 and The weight ratio of the particle group 2 ranges from 1:1.1 to 1:8. The antifouling cosmetic composition according to claim 1, wherein the spherical powder comprises a particle group having an average particle diameter of less than 5 μm, a particle group of 2-1 having an average particle diameter of 5 μm or more and less than 10 μm, and an average The particle group 2-2 having a particle diameter of 10 μm or more, and wherein the particle group 1, the particle group 2-1 and the particle group 2-2 have a weight ratio ranging from 1:0.6:0.5 to 1:3:5. The antifouling cosmetic composition according to claim 1, wherein the spherical powder comprises at least one selected from the group consisting of an inorganic particle, an organic particle, and an organic-inorganic composite particle. The antifouling cosmetic composition according to claim 1, wherein the spherical powder comprises at least one selected from the group consisting of cerium oxide, polymethyl methacrylate, and an ethylene/acrylic acid copolymer. The antifouling cosmetic composition according to claim 1, wherein the cosmetic composition further comprises a flake powder and an oleaginous binder. The antifouling cosmetic composition according to claim 6, wherein the flake powder content is at least 40% by weight and less than 80% by weight based on the total weight of the composition. The antifouling cosmetic composition according to claim 6, wherein the flake powder has an average thickness of 0.1 to 1.0 μm, an average particle diameter of 1 to 100 μm, and an aspect ratio satisfying 10 or more of the following Equation 1: Equation 1: Vertical and horizontal Ratio = average particle size / average thickness. The antifouling cosmetic composition according to claim 6, wherein the flake powder is at least one selected from the group consisting of talc, mica, boron nitride, barium sulfate, alumina, sericite, kaolin And synthetic fluorophlogopite. The antifouling cosmetic composition according to claim 6, wherein the oleaginous binder content is 5 to 20% by weight based on the total weight of the composition. The antifouling cosmetic composition according to claim 6, wherein the oleaginous binder is at least one selected from the group consisting of: an ester-based oil selected from the group consisting of hexyl laurate , dioctyl carbonate, diisostearyl malate, butanediol dicaprylate / dicaprate, cetyl ethylhexanoate, tris(ethylhexanoate), dicetone a group of stearyl dimer linoleate, caprylic/capric triglyceride, polyglyceryl-2 triisostearate, and pentaerythritol tetraisostearate; hydrocarbon based oil , which is selected from the group consisting of polybutene, hydrogenated polyisobutylene, and plant squalane; and an anthrone-based oil selected from the group consisting of phenyl polytrimethyl decane and a group consisting of polydimethyloxane. The antifouling cosmetic composition of claim 1, wherein the cosmetic composition is a compressed powder formulation. The antifouling cosmetic composition according to claim 1, wherein the cosmetic composition for preventing fine dust has a particle diameter of 10 μm or less.