KR20170062141A - Emulsion type cosmetic composition comprising pigment particles - Google Patents

Abstract

The present invention relates to an emulsifying cosmetic composition comprising an amphiphilic anisotropic powder and a pigment powder, wherein the amphiphilic anisotropic powder comprises a first polymeric spheroid that is hydrophilic and a second polymeric spheroide that is hydrophobic, Wherein the first polymeric spheroids have a core-shell structure and the shell comprises a functional group, wherein the first polymeric spheroid has a core-shell structure and the second polymeric spheroid at least partially binds to a structure that penetrates the opposite polymeric sphereoid .

Description

[0001] The present invention relates to an emulsion cosmetic composition comprising a pigment powder,

TECHNICAL FIELD The present invention relates to an emulsified cosmetic composition comprising a pigment powder and a method for producing the same.

When the pigment used in make-up cosmetics in water is dispersed in the trauma, it is difficult for the pigment present in the powder to attack the emulsion interface to maintain emulsion stability. In order to solve this problem, it is possible to stabilize the dispersion of the pigment and stabilize the emulsified formulation by using a large amount of the thickener in the formulation to prevent the coalescence between the pigments dispersed in the trauma and the emulsion interface attack. In this case, however, it is difficult to realize a smooth feeling due to an increase in viscosity due to a high viscosity.

In addition, the water-in-oil type formulation excellent in perseverance and water resistance is not suitable for showing a refreshing feeling because the oil is a foreign body.

The size and shape of the spherical fine particles made of the polymer are controlled according to the manufacturing method, and thus the application possibility is expanded. One of its applications is Pickering emulsion which can form stabilized macroporous particles using micro spherical particles. O / W emulsified particles are formed at a contact angle of 90 ° or more, and W / O emulsion particles are formed at a temperature of 90 ° or less depending on the degree of hydrophilicity / hydrophobicity of the spherical particles.

Attempts have been made to produce new anisotropic powders by imparting amphiphilic properties, both hydrophilic and hydrophobic, to the microspheres. An example is the Janus spherical particles. However, due to the morphological limitations of these spheres, there is a limit to the chemical anisotropy. In other words, although it is morphologically anisotropic, it is totally hydrophobic or hydrophilic, so that there is a limit to chemical anisotropy.

It has been attempted to produce anisotropic powders having surface activity by imparting chemical anisotropy together with geometric shape control. However, despite the advantage of its applicability of amphiphilic anisotropic powder, up to now, Has not been specifically developed, and there is a problem that it is difficult to mass-produce uniformly in the industry, so that no practical industrial application has been made.

The prior art of the present invention is disclosed in Korean Patent Publication No. 1997-0025588.

In view of the above, a problem to be solved by the present invention is to provide a stable emulsion cosmetic comprising pigment powder.

In another aspect, a problem to be solved by the present invention is to provide an emulsified cosmetic composition having excellent skin stability.

In another aspect, a problem to be solved by the present invention is to provide an emulsified cosmetic material wherein the pigment powder is uniformly dispersed without sedimentation or coalescence, and is excellent in formulation and emulsion stability.

In another aspect, a problem to be solved by the present invention is to provide a makeup and emulsifying cosmetic material having excellent sustaining power and covering ability.

In another aspect, a problem to be solved by the present invention is to provide an emulsified cosmetic composition which can provide a stable formulation without containing an excessive amount of thickening agent.

Another aspect of the present invention is to provide an emulsified cosmetic composition which prevents skin irritation by excluding an excessive amount of a thickening agent, a dispersant, a surfactant, and the like.

From another point of view, a problem to be solved by the present invention is to provide a cosmetic composition having excellent water resistance and durability.

In another aspect, a problem to be solved by the present invention is to provide a cosmetic composition for emulsifying which shows a feeling of fresh feeling and moisture due to water rupture of emulsified particles.

From another point of view, it is intended to provide a cosmetic lotion which imparts a matte and powdery finish.

In one aspect, the present invention is an emulsified cosmetic composition comprising an amphiphilic anisotropic powder and a pigment powder,

The amphiphilic anisotropic powder may be an amorphous powder,

A first polymeric spheroid that is hydrophilic and a second polymeric spheroid that is hydrophobic,

Wherein the first polymeric spheroids and the second polymeric spheroids are at least partially bound to a structure that penetrates the counterpart polymeric spheroids,

Wherein the first polymer spolide has a core-shell structure and the shell comprises a functional group.

In one aspect, the present invention can provide a stable emulsion cosmetic comprising the pigment powder.

From another point of view, the present invention can provide an emulsified cosmetic composition having excellent skin stability.

From another viewpoint, the present invention can provide an emulsified cosmetic material wherein the pigment powder is uniformly dispersed without sedimentation or coalescence, and is excellent in formulation and emulsion stability.

In another aspect, the present invention can provide a makeup emulsifying cosmetic composition having excellent durability and covering ability.

In another aspect, the present invention can provide an emulsified cosmetic composition capable of providing a stable formulation without containing an excessive amount of thickening agent.

From another viewpoint, the present invention can provide an emulsified cosmetic composition that prevents skin irritation by eliminating excessive amounts of an aging agent, a dispersant, a surfactant, and the like.

From another point of view, the present invention can provide an emulsified cosmetic material having excellent water resistance and durability.

From another viewpoint, the present invention can provide a cosmetic composition for emulsifying which shows a feeling of fresh feeling and moisture due to water bursting of emulsified particles.

From another viewpoint, it is possible to provide a cosmetic composition for emulsifying which gives a matte and powdery finish.

1 is an electron micrograph (scale bar: 50 μm) of the emulsion particle of the composition of Example 1 observed.
Fig. 2 is a photograph of the composition of Example 1 immediately after application. Fig.
Fig. 3 is an electron micrograph showing emulsion particles observed immediately after the preparation of the composition of Example 2 and Comparative Example 1 and after 4 weeks.

Embodiments of the present application will now be described in more detail with reference to the accompanying drawings. However, the techniques disclosed in the present application are not limited to the embodiments described herein but may be embodied in other forms. It should be understood, however, that the embodiments disclosed herein are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the widths and thicknesses of components are slightly enlarged in order to clearly illustrate each component. In addition, although only a part of the components is shown for convenience of explanation, those skilled in the art can easily grasp the rest of the components. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention.

As used herein, unless otherwise defined, at least one hydrogen atom of the functional groups of the invention is optionally substituted with at least one substituent selected from the group consisting of halogen (F, Cl, Br or I), a hydroxy group, a nitro group, an imino group A substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, May be substituted with a substituted heterocycloalkyl group having 2-30 carbon atoms.

As used herein, "(meth) acrylic" may mean acryl and / or methacryl.

The particle size of the amphiphilic anisotropic powder herein is the maximum length measured as the longest length of the powder particle. The particle size range of the amphiphilic anisotropic powder herein means that at least 95% of the amphipathic anisotropic powder present in the composition falls within this range.

In the present specification, the average particle diameter of the emulsified particles means an average value of the diameter of the single particles. In the present specification, the mean particle size range of the emulsified particles means that at least 95% of the emulsified particles present in the composition fall within the above range.

In the present specification, the average particle diameter of the pigment powder refers to the volume average particle diameter obtained by calculating the volume average based on the particle size distribution measured by a known particle size distribution measurement method such as electron microscopic image observation, laser diffraction, or the like.

According to one embodiment of the present invention, there is provided an emulsified cosmetic composition comprising a pigment powder and an amphiphilic anisotropic powder. The composition according to this embodiment can be used as a cosmetic composition for makeup including pigment powder.

In this embodiment, the pigment powder is present in an amount of, for example, at least 0.001% by weight, at least 0.002% by weight, at least 0.003% by weight, at least 0.004% by weight, at least 0.005% by weight, at least 0.006% At least 0.005 wt%, at least 0.009 wt%, at least 0.1 wt%, at least 0.2 wt%, at least 0.3 wt%, at least 0.4 wt%, at least 0.5 wt%, at least 0.6 wt%, at least 0.7 wt% At least 30 wt%, at least 29 wt%, at least 28 wt%, at least 27 wt%, at most 26 wt%, at most 25 wt%, at most 24 wt% , 23% or less, 22% or less, 21% or less, 20% or less, 19% or less, 18% or less, 17% or less, 16% or less, 15% or less, 14% , 13 wt% or less, 12 wt% or less, 11 wt% or less, 10 wt% or less, 9 wt% or less, 8 wt% or less, 7 wt% or less, 6 wt% or less, 5 wt% . For example, the pigment powder may comprise from 0.001% to 30%, from 0.1% to 20%, from 0.5% to 10%, or from 1% to 5% by weight based on the total weight of the composition . Within the above range, it is possible to maintain a stable emulsion formulation with excellent skin texture and skin tone improvement effect and feeling.

In the present embodiment, the emulsified interface of the emulsified particles is firmly maintained by the amphiphilic anisotropic powder, and the cohesion between the pigment powders does not occur, and a soft feeling can be provided.

In the present embodiment, the pigment powder may be a conventional powder used for expressing a color of a makeup cosmetic composition. For example, titanium dioxide, zinc oxide, talc, iron oxide, mica, alumina, polymethylmethacrylate, organic pigments and natural pigments can be used as the pigment powder.

For example, when the pigment powder is present in the oil phase of the emulsion composition, the surface-hydrophobicized pigment powder may be used. The surface hydrophobic treatment may be performed by a method commonly used in cosmetics. For example, the pigment powder may be treated with a silicone compound, a fatty acid, an amino acid, or the like, but is not limited thereto.

The pigment powder preferably has an average particle diameter of at least 0.001 m, at least 0.005 m, at least 0.01 m, at least 0.05 m, at least 0.1 m, at least 0.2 m, at least 0.3 m, at least 0.4 m, More than 2 mu m, not more than 2.5 mu m, not less than 3 mu m, not less than 3.5 mu m, not less than 4 mu m, not less than 4.5 mu m, or not more than 5 mu m Or less and 14 占 퐉 or less, 15 占 퐉 or less, 16 占 퐉 or less and 17 占 퐉 or less or less than 10 占 퐉, 11 占 퐉 or less, 12 占 퐉 or less, , Not more than 18 탆, not more than 19 탆, not more than 20 탆, not more than 21 탆, not more than 22 탆, not more than 23 탆, not more than 24 탆, not more than 25 탆, not more than 26 탆, not more than 27 탆, not more than 28 탆, It may be 30 mu m or less. For example, the pigment powder may have an average particle diameter of 0.001 to 6 mu m, for example, 0.3 mu m to 6 mu m. Within the above-mentioned range, there is an effect of coloring as a makeup cosmetic, and the formulation stability can be excellent.

In the present embodiment, the amphiphilic anisotropic powder comprises a first polymeric spheroid which is hydrophilic and a second polymeric spheroid which is hydrophobic, and wherein the first polymeric spheroid and the second polymeric spheroid comprise at least partly spherical polymeric spheroids And the first polymer spolide has a core-shell structure, and the shell may include a functional group.

In this embodiment, the sphere is a body made of a polymer, for example, a spherical sphere, a globoid or an oval shape, and may have a micro- And may have a long axis length in units or nanometers.

In one embodiment, the core of the first polymer spolide and the second polymer spolide include a vinyl polymer, and the shell of the first polymer spolide may include a copolymer of a vinyl monomer and a monomer containing a functional group.

In one example, the vinyl polymer may be a vinyl aromatic polymer, and may be, for example, polystyrene.

In one example, the vinyl monomer may be vinyl aromatic. In one example, the vinyl monomer may be substituted or unsubstituted styrene.

In one example, the functional group may be a siloxane.

In one embodiment, the functional group-containing monomer may be a siloxane-containing (meth) acrylate, and specifically includes 3- (trimethoxysilyl) propyl acrylate, 3- (trimethoxysilyl) propyl methacrylate, vinyl Triethoxysilane, vinyltrimethoxysilane, or a mixture thereof.

In one embodiment, the shell of the first polymer spolide may additionally include a hydrophilic functional group.

For example, the hydrophilic functional group may be a functional group having a negative or positive charge or a polyethylene glycol (PEG) group, and may be a carboxylic acid group, a sulfonic group, a phosphate group, an amino group, an alkoxy group, an ester group, an acetate group, a polyethylene glycol group, And the like.

In one example, the shell of the first polymer spolide may further include a sugar-containing functional group.

In one embodiment, the functional group containing the sugar is selected from the group consisting of N- {N- (3-triethoxysilylpropyl) aminoethyl} gluconamide, N- (3-triethoxysilylpropyl) - (3-triethoxysilylpropyl) aminoethyl} -oligo-hyaluronamide, and the like.

In one embodiment, the amphiphilic anisotropic powder may have a symmetrical shape, an asymmetric snowman shape, or an asymmetric inverse snowman shape based on the joint where the first polymer spoloid and the second polymer spoloid are combined. The shape of the snowman means that the first and second polymer spheroids having different sizes are combined.

In one example, the amphiphilic anisotropic powder may have a particle size of 100 to 2500 nm. In another aspect, the amphiphilic anisotropic powder may have a particle size of 100 to 1500 nm, 100 to 500 nm, or 200 to 300 nm. Specifically, the amphiphilic anisotropic powder preferably has a particle size of 100 nm or more, 200 nm or more, 300 nm or more, 400 nm or more, 500 nm or more, 600 nm or more, 700 nm or more, 800 nm or more, 900 nm or more, Or less, and 2500 nm or less, 2400 nm or less, 2300 nm or less, 2200 nm or less, 2100 nm or less, 2000 nm or less, 1900 nm or less Less than 1,100 nm, less than 1,100 nm, less than 1,000 nm, less than 900 nm, less than 800 nm, less than 700 nm, 600 nm or less, 500 nm or less, 400 nm or less, 300 nm or less, or 200 nm or less.

In one example, the amphiphilic anisotropic powder may form macroporous emulsion particles of 2 to 500 mu m. In another aspect, the amphiphilic anisotropic powder may be one that forms macromolecular emulsion particles of from 5 to 400 microns, from 10 to 350 microns, from 30 to 300 microns, or from 50 to 300 microns. Specifically, the amphiphilic anisotropic powder may have an average particle diameter of 2 탆 or more, 3 탆 or more, 4 탆 or more, 5 탆 or more, 6 탆 or more, 7 탆 or more, 8 탆 or more, 9 탆 or more, 10 탆 or more, At least 15 탆, at least 16 탆, at least 17 탆, at least 18 탆, at least 19 탆, at least 20 탆, at least 21 탆, at least 22 탆, at least 23 탆, at least 24 탆 At least 25 mu m, at least 26 mu m, at least 27 mu m, at least 28 mu m, at least 29 mu m, at least 30 mu m, at least 31 mu m, at least 32 mu m, at least 33 mu m, at least 34 mu m, at least 35 mu m, at least 36 mu m, at least 37 At least 40 탆, at least 41 탆, at least 42 탆, at least 43 탆, at least 44 탆, at least 45 탆, at least 46 탆, at least 47 탆, at least 48 탆, at least 49 탆 , Or 50 占 퐉 or more, and 500 占 퐉 or less, 490 占 퐉, 480 占 퐉, 470 占 퐉, 460 占 퐉, 450 占 퐉, 440 占 퐉, 430 占 퐉, 420 占 퐉, 410 占 퐉, , 390 탆 or less, 380 탆 300 μm or less, 310 μm or less, 300 μm or less, 290 μm or less, 280 μm or less, 270 μm or less, 260 μm or less, It is preferable to form emulsion particles having a particle size of 250 μm or less, 240 μm or less, 230 μm or less, 220 μm or less, 210 μm or less, 200 μm or less, 190 μm or less, 180 μm or less, 170 μm or less, 160 μm or less .

The hydrophobic portion and the hydrophilic portion of the amphipathic anisotropic powder have different orientations toward the interface, whereby the macro emulsion particles can be formed. It is possible to provide emulsified formulations having various viscosities including the formulations having the soft feel of low viscosity with the large emulsified particles as described above.

While the interface film formed by a general molecular level surfactant forms a dynamic emulsification state, the emulsion particle formed by the amphiphilic anisotropic powder increases the thickness of the interfacial film to several hundreds nm and forms a solid interfacial film . Through the formation of the interfacial film, the stability of emulsification is improved, and stable emulsified state can be maintained without being affected by the pigment powder.

In one embodiment, the composition comprises the amphiphilic anisotropic powder in an amount of, for example, at least 0.1%, at least 0.2%, at least 0.3%, at least 0.4%, at least 0.5%, at least 0.6% , Not less than 0.7 wt%, not less than 0.8 wt%, not less than 0.9 wt%, or not less than 1.0 wt%, not more than 20 wt%, not more than 19 wt%, not more than 18 wt%, not more than 17 wt% 14% or less, 13% or less, 12% or less, 11% or less, 10% or less, 9% or less, 8% or less, 7% or less, 6% Or less, 4 wt% or less, or 3 wt% or less. For example, the amphiphilic anisotropic powder may be present in an amount of from 0.1% to 20%, such as from 0.5% to 10%, such as from 1% to 4% by weight, such as from 1% To 3% by weight. Stable emulsion particles can be formed within the above range, and emulsion particles having an appropriate size can be formed.

The composition according to this embodiment may have a viscosity of, for example, at least 1000 cps, at least 1100 cps, at least 1200 cps, at least 1300 cps, at least 1400 cps, at least 1500 cps, at least 1600 cps, at least 1700 cps, at least 1800 cps , Not less than 1900 cps, not less than 2000 cps, not less than 2100 cps, not less than 2200 cps, not less than 2300 cps, not less than 2400 cps, or not less than 2500 cps, not more than 30,000 cps, not more than 29000 cps, not more than 28000 cps, not more than 27000 cps, not more than 26000 cps Less than 25000 cps, less than 24000 cps, less than 23000 cps, less than 22000 cps, less than 21000 cps, less than 20,000 cps, less than 19000 cps, less than 18000 cps, less than 17000 cps, less than 16000 cps, less than 15000 cps, less than 14000 cps, 13000 8000 cps or less, 8000 cps or less, 8000 cps or less, 8000 cps or less, 8000 cps or less, 8000 cps or less, , 8000 cps or less, 7900 cps or less, 7800 cps or less, 7700 cps or less, 7600 cps or less, 7500 cps or less, 7400 cp less than 7000 cps, less than 7000 cps, less than 6000 cps, less than 6000 cps , 6100 cps or less, or 6000 cps or less. For example, the viscosity may be 1,000 to 20,000 cps, 1,000 cps to 10,000 cps, 1,500 to 7,000 cps, or 2,000 to 6,000 cps. The composition according to the present embodiment can form macroporous emulsion particles having strong emulsion interfaces, and the pigment powder is dispersed in the oil phase and a single amphipathic anisotropic powder that does not form emulsion particles is also present, And the emulsion stability of the formulation can be also excellent.

The method for producing a cosmetic composition according to an embodiment of the present invention may include preparing the amphiphilic anisotropic powder and emulsifying the oil phase and the water phase using the amphoteric anisotropic powder produced.

In one embodiment of the present invention, the amphiphilic anisotropic powder may be prepared by polymerizing a first monomer to prepare a core of a first polymer spoloid, coating the core of the first polymer spoloid to form a core- And preparing an amphiphilic anisotropic powder in which the second polymer spolide is formed by reacting the first polymer spolide of the core-shell structure with the first monomer.

In one embodiment, the amphiphilic anisotropic powder is prepared by (1) stirring the first monomer and the polymerization initiator to prepare a core of the first polymer spolide; (2) stirring the prepared core of the first polymer spolide with a monomer containing a first monomer, a polymerization initiator and a functional group to prepare a first polymer spolide having a coated core-shell structure; (3) preparing an amphiphilic anisotropic powder in which the second polymer spolide is formed by stirring the first polymer spoloid of the prepared core-shell structure with the second monomer and the polymerization initiator.

In the above steps (1), (2) and (3), stirring may be rotary stirring. It is preferable to rotate and stir because chemical mechanical modification and homogeneous mechanical mixing are required for producing uniform particles. The rotational stirring may be performed in a cylindrical rotating reactor, but the rotational stirring method is not limited thereto.

At this time, the design inside the reactor has a great influence on powder formation. The size and location of the baffles in the cylindrical rotating reactor and the degree of spacing between the impeller and the baffles greatly influence the uniformity of the particles produced. It is desirable to minimize the interval between the blades of the inner wing and the impeller to equalize the convection flow and the strength thereof, and to feed the powder reaction liquid below the wing length and to maintain the impeller rotation speed at a high speed. 200 rpm, and the length to diameter ratio of the reactor may be 1 to 3: 1 to 5, more specifically 10 to 30 cm in diameter and 10 to 50 cm in height. The reactor size can be varied in proportion to the reaction capacity. The material of the cylindrical rotating reactor may be ceramics, glass, etc., and the temperature at the time of stirring is preferably 50 to 90 ° C.

In the cylindrical rotating reactor, the simple rotation method is capable of producing uniform particles, and is a low energy method requiring less energy and maximizing the reaction efficiency, enabling mass production. The conventional tumbling method in which the reactor itself rotates requires high energy and restricts the size of the reactor since the entire reactor must be tilted at a constant angle and rotated at high speed. The amount produced due to reactor size limitations was also limited to small quantities of the order of several hundreds of milligrams to several grams, making them unsuitable for mass production.

In one embodiment, the first monomer and the second monomer may be the same or different, and may be specifically vinyl monomers. The first monomer added in the step (2) is the same as the first monomer used in the step (1), and the polymerization initiator used in each step may be the same or different.

In one example, the vinyl monomer may be vinyl aromatic. In one example, the vinyl monomer may be substituted or unsubstituted styrene.

In one example, the polymerization initiator may be a radical polymerization initiator, specifically, a peroxide type, an azo type, or a mixture thereof. Ammonium persulfate, sodium persulfate and potassium persulfate may also be used.

In one example, in the step (1), the first monomer and the polymerization initiator may be mixed at a weight ratio of 100 to 1000: 1. In another aspect, the first monomer and the polymerization initiator may be mixed in a weight ratio of 100 to 750: 1, or 100 to 500: 1, or 100 to 250: 1.

In another aspect, a stabilizer may be added together with the first monomer and the polymerization initiator in the step (1) to mix the first monomer, the polymerization initiator, and the stabilizer in a weight ratio of 100 to 1000: 1: 0.001 to 5. The powder size and shape are determined according to the first polymer spoil size adjustment in the initial stage (1), and the first polymer spoil size can be adjusted according to the weight ratio of the first monomer, the polymerization initiator, and the stabilizer. In addition, by mixing at the weight ratio within the above range, there is an effect that the uniformity of the anisotropic powder can be increased.

In one example, the stabilizer may be an ionic vinyl monomer, and specifically sodium 4-vinylbenzene sulfonate may be used. Stabilizers prevent swelling of the resulting particles and provide positive or negative charge on the powder surface to electrostatically prevent interactions (bonds) during grain formation.

The weight ratio of the first monomer, the polymerization initiator and the stabilizer is 110 to 130: 1: 1 to 5, specifically 115 to 125: 1: 2 to 4, when the amphiphilic anisotropic powder has a size of 200 to 250 nm. 1 < / RTI > polymer spolide.

When the amphiphilic anisotropic powder has a size of 400 to 450 nm, the weight ratio of the first monomer, the polymerization initiator and the stabilizer is in the range of 225 to 240: 1: 1 to 3, specifically 230 to 235: 1: 1 to 3 , ≪ / RTI > the first polymeric spheroids.

When the amphiphilic anisotropic powder has a size of 1100 to 2500 nm, the first polymer having a weight ratio of the first monomer, the polymerization initiator and the stabilizer is 110 to 130: 1: 0, specifically 115 to 125: 1: 0 ≪ / RTI >

The amphiphilic anisotropic powder having an asymmetric snowman shape is preferably an amorphous powder having a weight ratio of the first monomer, the polymerization initiator and the stabilizer of 100 to 140: 1: 8 to 12, specifically 110 to 130: 1: 9 to 11 Can be prepared from polymeric sphereoids.

The amphiphilic anisotropic powder having an asymmetric reverse snowman shape is preferably an amphipathic powder having a weight ratio of the first monomer, the polymerization initiator and the stabilizer of 100 to 140: 1: 1 to 5, specifically 110 to 130: 1: 2 to 4 1 < / RTI > polymer spolide.

In one embodiment, the monomer containing a functional group in the step (2) may be a siloxane-containing (meth) acrylate. Specific examples thereof include 3- (trimethoxysilyl) propyl acrylate, 3- (trimethoxysilyl) Methacrylate, vinyltriethoxysilane, vinyltrimethoxysilane, or a mixture thereof.

In one embodiment, the monomer containing the first monomer, the polymerization initiator and the functional group in the step (2) may be mixed at a weight ratio of 80 to 98: 0.2 to 1.0: 1 to 20. In another aspect, the first monomer, the polymerization initiator, and the monomer containing the functional group may be mixed at a weight ratio of 160 to 200: 1: 6 to 40. The degree of coating can be controlled according to the weight ratio, and the shape of the amphipathic anisotropic powder is determined according to the degree of coating, and when the weight ratio is adjusted, the coating thickness is increased to about 10 to 30%, specifically about 20% And the coating is too thick, so that the pulverization does not proceed or the pulverization is proceeded well without the problem that the pulverization is too thin. In addition, by mixing at the weight ratio within the above range, there is an effect that the uniformity of the anisotropic powder can be increased.

According to the above step (3), a part of the core of the first polymer spolide is protruded from the one side of the first polymer spolide of the core-shell structure through the shell and the protrusions are grown by the polymer of the second monomer, Can be formed.

For example, in the step (3), the second monomer and the polymerization initiator may be mixed in a weight ratio of 150 to 250: 1. In another aspect, the second monomer and the polymerization initiator may be present in an amount of from 160 to 250: 1, or from 170 to 250: 1, or from 180 to 250: 1, or from 190 to 250: 1, or from 200 to 250: : 1, or 220 to 250: 1, or 230 to 250: 1, or 240 to 250: 1.

In another aspect, the second monomer, the polymerization initiator and the stabilizer may be mixed in a weight ratio of 150: 250: 1: 0.001 to 5 by adding the second monomer and the polymerization initiator together with the stabilizer in the step (3). Specific types of stabilizers are as described above. By mixing at a weight ratio within the above range, uniformity of the anisotropic powder can be enhanced.

In one embodiment, in the step (3), the second monomer content may be 40 to 300 parts by weight when the weight of the first polymer spoil of the core-shell structure is 100 parts by weight. Specifically, when the second monomer content is 40 to 100 parts by weight when the first polymer spoil weight of the core-shell structure is 100 parts by weight, the asymmetric snowman type powder is obtained, and 100 to 150 parts by weight, or 110 to 150 parts by weight, When the weight is in the range of 150 to 300 parts by weight or in the range of 160 to 300 parts by weight, an asymmetric reverse snowman type powder is obtained. In addition, by mixing at the weight ratio within the above range, there is an effect that the uniformity of the anisotropic powder can be increased.

In another embodiment of the present invention, in the production of an amphiphilic anisotropic powder according to an embodiment of the present invention, the step (3) may further include the step of (4) introducing a hydrophilic functional group into the produced anisotropic powder have.

In one embodiment, the hydrophilic functional group in step (4) is not limited thereto, but may be introduced using a silane coupling agent and a reaction control agent.

In one embodiment, the silane coupling agent is selected from the group consisting of (3-aminopropyl) trimethoxysilane, N- [3- (trimethoxysilyl) propyl] ethylenediamine, N- [3- (trimethoxysilyl) (Trimethoxysilyl) propyl] urea and 3 - [(trimethoxysilyl) propyloxy] -1,2 (trimethylsilyl) Propanediol, and specifically may be at least one selected from the group consisting of N- [3- (trimethoxysilyl) propyl] ethylenediamine.

For example, the silane coupling agent may be added in an amount of 35 to 65 parts by weight, for example, 40 to 60 parts by weight based on 100 parts by weight of the anisotropic powder prepared in the step (3). Within this range, hydrophilization can be appropriately performed.

In one example, the reaction modifier may be ammonium hydroxide.

For example, the reaction modifier may be added in an amount of 85 to 115 parts by weight, for example, 90 to 110 parts by weight based on 100 parts by weight of the anisotropic powder prepared in the step (3). Within this range, hydrophilization can be appropriately performed.

In another embodiment of the present invention, in the production of the amphiphilic anisotropic powder according to one embodiment of the present invention, the step (3) is followed by (4) a step of introducing a sugar-containing functional group into the produced anisotropic powder .

In the step (4), the functional group containing sugar is not limited thereto, but may be introduced using a sugar-containing silane coupling agent and a reaction control agent.

According to one exemplary embodiment, the sugar-containing silane coupling agent is selected from the group consisting of N- {N- (3-triethoxysilylpropyl) aminoethyl} gluconamide, N- (3-triethoxysilylpropyl) And N- {N- (3-triethoxysilylpropyl) aminoethyl} -oligo-hyaluronamide.

According to one exemplary embodiment, the reaction modifier may be ammonium hydroxide.

For example, the reaction modifier may be added in an amount of 85 to 115 parts by weight, for example, 90 to 110 parts by weight based on 100 parts by weight of the anisotropic powder prepared in the step (3). The introduction of a sugar-containing functional group within the above range can be suitably performed.

The preparation of the amphiphilic anisotropic powder according to the above method does not use a cross-linking agent, so there is no production entanglement. Thus, the yield is high and uniform, and mass production is easier than the tumbling method using a simple agitation method. In particular, there is an advantage that a nano size of 300 nm or less can be mass-produced in a unit of tens g to several tens of kg.

The composition according to this embodiment may be a water-in-oil emulsion composition. The water-in-oil type emulsion composition may be a conventional water-in-oil (W / S) emulsion composition or a water-in-silicone (W / S) emulsion composition in which a silicone oil forms a trauma. For example,

When the composition is a water-in-oil type or a water-in-silicone type, the pigment powder is present in the oil phase in the trauma and can be stably dispersed without sedimentation or unevenness between the pigment powders as described above.

The water-in-oil type or silicone-type water-type emulsified composition can be excellent in water resistance and durability because the external phase is oily phase. The composition of the present invention can impart freshness through water jetting while discharging the inner surface of the macro emulsified particles upon application of the skin, thereby eliminating stickiness or feeling of uncomfortable feeling that may occur because the trauma is oily.

In one embodiment, the composition according to this embodiment is not a conventional water-in-oil / water / water-in-oil type formulation, but a formulation can be formed that is characterized by a feeling of watering by the large-sized emulsified particles. The composition according to the present embodiment can form macroporous emulsion particles having strong emulsion interfaces, and the pigment powder is dispersed in the oil phase and a single amphipathic anisotropic powder that does not form emulsion particles is also present, And the emulsion stability of the formulation can be also excellent.

The composition according to this embodiment can uniformly disperse the pigment powder without using a high amount of the thickening agent and can prevent stickiness or skin irritation due to the thickening agent.

The composition according to the present embodiment can provide a feeling of feeling that the formulation can be easily collapsed when the skin is applied and smoothly spread.

The composition according to this embodiment can also prevent skin irritation, which may be caused by the addition of a dispersant or an excessive amount of a surfactant.

The composition according to the present embodiment is excellent in emulsion stability in an emulsified form including a pigment powder, and can impart a feeling of soft feeling as an emulsified composition and a freshness and moisture due to water burst at the same time. In particular, even in the presence of a high amount of the pigment powder, the stability is not affected and the above-mentioned effect can be exhibited.

The composition according to this embodiment can eliminate the sticky finish feeling due to the surfactant and can provide a matte and powdery finish to the formulation by the presence of the amphiphilic anisotropic powder that does not form emulsified particles.

The composition according to this embodiment may exhibit emulsion stability over time in a wide temperature range, for example, from -15 캜 to 60 캜, for example, from -10 캜 to 55 캜.

The composition according to this embodiment can contain a large emulsion particle to provide a soft and soft feel.

The composition according to the present embodiments can cause water bursting to be visually confirmed as the inner phase of the macro emulsion particle is ejected immediately upon application, thereby supplying moisture to the skin and clearing the texture of the skin, The skin can be imparted with a color tone, skin tone or texture can be covered, and the amphipathic anisotropic powder is provided with a powdery and light feel, which is in close contact with the mat and can maintain the durability.

The composition according to the present embodiments can maintain the stability of the emulsion formulation even if it additionally contains excessive amount of ethanol or salt, etc. to impart freshness to the formulation.

The cosmetic composition according to embodiments of the present invention may be formulated containing a cosmetically or dermatologically acceptable medium or base. It may be in the form of a suspension, a microemulsion, a microcapsule, a microgranule or an ionic (liposome) and a non-ionic follicular dispersion, or a cream, a skin, a lotion, a powder, an ointment, a spray, May be provided in the form of a stick. It can also be used in the form of a foam or in the form of an aerosol composition further containing a compressed propellant. These compositions may be prepared according to conventional methods in the art.

The cosmetic composition according to the embodiments of the present invention may be formulated into a makeup composition such as a foundation, a liquid foundation, a concealer, a makeup base, or the like, but is not limited thereto.

In addition, the cosmetic composition according to embodiments of the present invention may be in the form of powders, fatty substances, organic solvents, solubilizers, thickeners, gelling agents, softeners, antioxidants, suspending agents, stabilizers, foaming agents, , Water, ionic or nonionic emulsifiers, fillers, sequestering agents, chelating agents, preservatives, vitamins, barrier agents, wetting agents, essential oils, dyes, pigments, hydrophilic or lipophilic active agents, lipid vesicles or cosmetics And any other ingredients used, such as cosmetics or adjuvants commonly used in the field of dermatology. Such adjuvants are introduced in amounts commonly used in the cosmetics or dermatological fields. The cosmetic composition according to the embodiments of the present invention may further contain a skin absorption promoting substance to increase the skin improving effect.

Hereinafter, the present invention will be described in more detail with reference to Examples. It is to be understood by those skilled in the art that these embodiments are merely illustrative of the present invention and that the scope of the present invention is not construed as being limited by these embodiments.

[Production Examples 1 to 4]

Production Examples 1 to 4 were prepared according to the compositions shown in Table 1 below. Specific methods are described below.

The components used in the following Production Examples are as follows.

MeOH: Methanol cosolvent

KPS: Potassium persulfate (initiator)

SVBS: Sodium vinyl benzene sulfonate (stabilizer)

PS: Polystyrene (polymer bead)

TMSPA: Trimethoxysilyl propylacrylate (functional group)

AIBN: Azobisisobutyronitrile (polymerization initiator)

Manufacturing example  1. Polystyrene (PS) First polymer Speroid  Produce

50 g of styrene as a monomer, 1.0 g of sodium 4-vinylbenzenesulfonate as a stabilizer and 0.5 g of azobisisobutyronitrile (AIBN) as a polymerization initiator were mixed in a water bath at 75 DEG C For 8 hours. The reaction was stirred in a cylindrical rotating reactor. The cylindrical rotating reactor was 11 cm in diameter, 17 cm in height, made of glass, and rotated at a speed of 200 rpm.

Preparation Example 2 Preparation of Coated First Polymer Spheroid of Core-Shell (CS) Structure

(Styrene), 6 g of TMSPA (3- (trimethoxysilyl) propylacrylate) as a monomer, and 0.2 g of azobisisobutyronitrile (AIBN) as a polymerization initiator were added to 300 g of the obtained first polymeric spolide of polystyrene ) Were mixed and reacted at 75 DEG C for 8 hours. The reaction was stirred in a cylindrical rotating reactor.

Manufacturing example  3. Amphipathic  Anisotropy Powder  (DB) manufacturing

40 g of styrene as a monomer, 0.35 g of sodium 4-vinylbenzenesulfonate as a stabilizer, and 0.35 g of azobisisobutyronitrile as a polymerization initiator were added to 240 g of the polystyrene core shell (PS-CS) water dispersion solution obtained as a result of the reaction, And 0.2 g of azobisisobutyronitrile (AIBN) were mixed and heated at 75 캜 for 8 hours. The reaction was stirred in a cylindrical rotating reactor to produce an amphiphilic anisotropic powder.

Manufacturing example  4. Hydrophilized Amphipathic  Anisotropy Powder  Produce

30 g of N- [3- (trimethoxysilyl) propyl] ethylenediamine as a silane coupling agent and 30 g of N- [3- (trimethoxysilyl) propyl] ethylenediamine were added to 600 g of the aqueous dispersion solution of the obtained anisotropic powder, (Ammmonium hydroxide) were mixed and reacted at 25 DEG C for 24 hours to introduce a hydrophilic functional group. The reaction was stirred in a cylindrical rotating reactor to prepare a hydrophilized amphipathic anisotropic powder.

[ Examples and Comparative Examples ] Preparation of emulsified composition

The water-in-oil type emulsion compositions of Examples 1 and 2 and Comparative Example 1 were prepared according to the compositions shown in Tables 2 and 3 below. Examples 1 and 2 are emulsion compositions prepared using the amphiphilic anisotropic powder prepared according to Preparation Example 3, and Comparative Example 1 is an emulsion composition using general surfactants.

Specifically, with respect to the compositions shown in Tables 2 and 3, the pigment was dispersed at 3500 rpm for 5 minutes in the oil phase mixture in which the oil phase components were mixed, and the mixture was agitated and mixed. The mixture was emulsified at 3500 rpm for 10 minutes, Followed by cooling and degassing at 3500 rpm for 5 minutes.

The sphere components used in the following examples and comparative examples are as follows.

(a) Oil:

Butylene glycol dicaprylate / dicaprate (Dermofeel BGC, SASOL)

Dicaprylyl carbonate, Cetiol CC, Cere Chemicals (Henkel)

Cyclopentasiloxane (cyclohexasiloxane, Dow Corning 345 Fluid, Dow Corning)

(b) Oil-dispersed amphiphilic anisotropic powder: An ampholytic anisotropic powder obtained by dispersing an amphiphilic anisotropic powder of Preparation Example 3 in decamethyl cyclopentasiloxane (DC 345, Dow Corning) in an amount of 13% by weight based on the total weight of the oil- Dispersion solution

(c) Pigment Powder:

Titanium dioxide / aluminum hydroxide / triethoxycaprylylsilane (OTS Coating Pigment, OTS-2 TIO2 CR-50, DAITO KASEI KOGYO CO., LTD., 0.45 탆)

Oxide / triethoxycaprylylsilane (OTS Coating Pigment, OTS-2 Yellow LLXLO, DAITO KASEI KOGYO CO., LTD., 0.6 탆)

Oxide / triethoxycaprylylsilane (OTS Coating Pigment, OTS-2 Red R-516L, DAITO KASEI KOGYO CO., LTD., 1.1 탆)

Oxide / triethoxycaprylylsilane (OTS Coating Pigment, OTS-2 Black BL-100, DAITO KASEI KOGYO CO., LTD., 2.5 탆)

Polymethyl methacrylate (Artpearl K-7P, manufactured by Dongjin Chemical Co., Ltd., 6.0 占 퐉)

(d) Preservative: phenoxyethanol (Clariant)

(e) Softening agent: ethylhexylglycerin (Sensiva SC50, Schulke & Mayr)

(f) Moisturizing agent: Butylene glycol (Daicel)

(g) Metal ion sequestrant: EDTA (E.D.T.A.-2NA, Neod)

(h) Emulsion stabilizer: sodium chloride

(i) Inorganic thickener: Bentone (Bentone 38V, Elementis Specialties, Inc)

(j) Surfactant: PEG-10 dimethicone (KF-6017, Shinetsu Silicone)

Component (% by weight) Example 1 Oil component Butyleneglycol dicaprylate / dicaprate 5 Dicaprylyl carbonate 5 Oil-dispersed amphipathic anisotropic powder ASP in DC345 (13%) 30 Pigment Titanium Dioxide / Triethoxycaprylylsilane (OTS Coating Pigment Base) 5 Water component Purified water 47.1 Phenoxyethanol, Phenoxyethanol 0.3 Ethylhexylglycerin 0.05 Butylene glycol, butylene glycol 5 EDTA 0.05 Sodium chloride 0.5 Incrementer Benton 2

Component (% by weight) Example 2 Comparative Example 1 Oil component Cyclopentasiloxane 29.05 29.05 Piggy-10 Dimethicone 0 2 Oil-dispersed ampholytic anisotropic powder 15.4 0 Pigment Titanium dioxide /
Triethoxycaprylylsilane (OTS Coating Pigment Base) 5 5 Water component Purified water Balance Balance Butylene glycol 14 14 Anisotropic powder 2 0 Incrementer Benton 0.5 0.5

[ Test Example 1] Observation of formulation and observation of effect by initial application

The composition of Example 1 was observed with an electron microscope, and the photograph was shown in Fig. 1, and water burst phenomenon at the time of initial application was confirmed. A photograph at the time of initial application is shown in Fig.

From the results of FIG. 1, it can be seen that large emulsified particles are stably formed. From the results of FIG. 2, when the large emulsified particles are sprayed, the inner aqueous phase component is discharged and water droplets .

[ Test Example 2] Evaluation of emulsion stability over time

The composition of Example 2 and Comparative Example 1 was maintained at 30 占 폚 for 4 weeks to confirm the emulsion stability of the formulation. FIG. 3 shows an electron micrograph immediately after the preparation and after 4 weeks. 3, it can be seen that in Example 2, large emulsion particles are generated and the emulsion particles are stably maintained without change over time. On the other hand, in Comparative Example 1 using a general surfactant, the initial emulsion particles have a small size , And after 4 weeks, the emulsified particles become larger due to the coalescence between the emulsified particles, and the emulsion stability is lowered.

[ Test Example 3] Evaluation of use feeling

The composition of Comparative Example 1 and Example 1 was used for 30 women in their twenties to forties, and a 5-point scale (1 point: very good) about the skin feeling, Poor ~ 5 points: very good), and the average value of the results is shown in Table 4 below.

Evaluation items Example 2 Comparative Example 1 Moisture 4.5 3.0 A refreshing finish 4.2 2.8 Stickiness 2.9 3.6 Watering appearance Show water droplets No water droplets visible

From the results shown in Table 4, Example 2 exhibited excellent water repellency, crisp finish, low stickiness, and water droplets due to water burst phenomenon. On the other hand, in the case of Comparative Example 1, the moisture feeling and the crisp finish feeling were low, the stickiness was high, and no water droplets were generated.

Claims (21)

An amphoteric cosmetic composition comprising an amphiphilic anisotropic powder and a pigment powder,
The amphiphilic anisotropic powder may be an amorphous powder,
A first polymeric spheroid that is hydrophilic and a second polymeric spheroid that is hydrophobic,
Wherein the first polymeric spheroids and the second polymeric spheroids are at least partially bound to a structure that penetrates the counterpart polymeric spheroids,
Wherein the first polymer spolide has a core-shell structure and the shell comprises a functional group. The method according to claim 1,
Wherein the pigment powder is contained in an amount of 0.001% by weight to 30% by weight based on the total weight of the composition. The method according to claim 1,
Wherein the pigment powder comprises at least one selected from the group consisting of titanium dioxide, zinc oxide, talc, iron oxide, mica, alumina, polymethylmethacrylate, organic pigments and natural pigments. The method according to claim 1,
Wherein the pigment powder has an average particle size of 0.001 to 6 mu m. The method according to claim 1,
Wherein the composition comprises from 0.1% to 20% by weight of the amphiphilic anisotropic powder relative to the total weight of the composition. The method according to claim 1,
Wherein the composition has a viscosity of from 1000 cps to 20000 cps. The method according to claim 1,
Wherein the composition is water-in-oil or water-in-silicone. 8. The method of claim 7,
Wherein the pigment powder is dispersed in an oil phase. 8. The method of claim 7,
Wherein the pigment powder is surface-hydrophobicized. The method according to claim 1,
Wherein the functional group is a siloxane. The method according to claim 1,
Wherein the core of the first polymer spolide and the second polymer spolide comprise a vinyl polymer,
The shell of the first polymer spolide may comprise a vinyl monomer; And a monomer containing a functional group. 12. The method of claim 11,
Wherein the vinyl polymer is a vinyl aromatic polymer. 12. The method of claim 11,
Wherein the vinyl monomer is a vinyl aromatic monomer. 12. The method of claim 11,
Wherein the functional group-containing monomer is a siloxane-containing (meth) acrylate. The method according to claim 1,
Wherein the amphipathic anisotropic powder has a symmetrical shape, an asymmetric snowman shape or an asymmetric inverted snowman shape with respect to the joint where the first polymeric spheroid and the second polymeric spheroid are bonded. The method according to claim 1,
Wherein the amphiphilic anisotropic powder has a particle size of 100 to 2500 nm. The method according to claim 1,
Wherein the amphiphilic anisotropic powder forms macroparticulate particles having an average particle size of 50 to 300 탆. The method according to claim 1,
Wherein the shell of the first polymer spolide is further introduced with a hydrophilic functional group. 19. The method of claim 18,
Wherein the hydrophilic functional group is at least one selected from the group consisting of a carboxylic acid group, a sulfonic group, a phosphate group, an amino group, an alkoxy group, an ester group, an acetate group, a polyethylene glycol group and a hydroxyl group. The method according to claim 1,
Wherein the shell of the first polymer spolide is further introduced with a sugar-containing functional group. 21. The method of claim 20,
The functional groups containing the sugar include N- {N- (3-triethoxysilylpropyl) aminoethyl} gluconamide, N- (3-triethoxysilylpropyl) -Triethoxysilylpropyl) aminoethyl} -oligo-hyaluronamide. ≪ / RTI >

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