KR102080035B1 - Emulsion type cosmetic composition comprising pigment particles - Google Patents

Abstract

The present specification is an emulsified cosmetic composition comprising an amphiphilic anisotropic powder and a pigment powder, wherein the amphiphilic anisotropic powder includes a hydrophilic first polymer spheroid and a hydrophobic second polymer spheroid, and the first polymer spheroid. With respect to the emulsified cosmetic composition, the Lloyd and the second polymer spheroid at least partially bind in a structure that penetrates the relative polymer spheroid, wherein the first polymer spheroid has a core-shell structure, and the shell comprises a functional group. Describe.

Description

Emulsion cosmetic composition containing pigment powder and its manufacturing method {Emulsion type cosmetic composition comprising pigment particles}

The present specification relates to an emulsion cosmetic composition containing pigment powder and a method of manufacturing the same.

When the pigments used in the water-in-oil makeup cosmetics are dispersed in the outer phase, the pigments present in the powder attack the emulsification interface and it is difficult to maintain the emulsion stability. In order to solve this problem, a large amount of thickener is used in the formulation to prevent coalescence and emulsion interface attack between the pigments dispersed in the outer phase, thereby achieving stable dispersion of the pigment and stabilization of the emulsion formulation. In this case, however, the thickener shows a feeling of stickiness, and due to the high viscosity, it is difficult to realize smooth application.

In addition, water-in-oil type formulations excellent in terms of durability and water resistance are not suitable for showing a fresh feeling because the oil is a trauma.

As the spherical fine particles made of a polymer is controlled in size and shape according to the manufacturing method, the application possibilities are expanded. One such application is a pickling emulsion that can form stabilized large emulsified particles using fine spherical particles. Depending on the degree of hydrophilicity / hydrophobicity of the spherical particles, the contact angle θ is different between the aqueous phase and the oil phase, and O / W emulsified particles are formed at a contact angle of 90 ° or more, and W / O emulsified particles are formed at 90 ° or less.

Attempts have been made to produce new anisotropic powders by imparting amphiphilic properties having both hydrophilicity and hydrophobicity to the fine spherical particles. An example is Janus spherical particles. However, these spherical morphological limitations limit chemical anisotropy. That is, although morphologically anisotropic, as a whole hydrophobic or hydrophilic, there was a limit to chemical anisotropy.

This has been attempted to produce anisotropic powders having an interfacial activity by providing chemical anisotropy with geometrical shape control.However, despite the advantage that the amphipathic anisotropic powders have great applicability, the production method is possible to mass production. This has not been specifically developed, there is a problem that it is difficult to mass-produce industrially uniformly, practical industrial applications have not been achieved.

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

In one aspect, the problem to be solved by the present invention is to provide a stable emulsion cosmetic containing the pigment powder.

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

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

In another aspect, the problem to be solved by the present invention is to provide a make-up emulsion cosmetics excellent in sustainability and coverage.

In another aspect, the problem to be solved by the present invention is to provide an emulsified cosmetic that can provide a stable formulation without including an excessive thickener.

In another aspect, the problem to be solved by the present invention is to provide an emulsified cosmetic composition to prevent skin irritation by excluding excessive thickeners, dispersants, surfactants and the like.

In another aspect, the problem to be solved by the present invention is to provide an emulsion cosmetic having excellent water resistance and durability.

In another aspect, the problem to be solved by the present invention is to provide an emulsified cosmetics exhibiting a fresh feeling of use and moisture due to the water burst of the emulsified particles.

In another aspect, it is to provide an emulsified cosmetic that gives a matte and powdery finish.

In one aspect, an emulsified cosmetic composition comprising an amphiphilic anisotropic powder and pigment powder,

The amphipathic anisotropic powder,

A hydrophilic first polymer spheroid and a hydrophobic second polymer spheroid,

The first polymer spheroid and the second polymer spheroid are combined at least partially in a structure penetrating the relative polymer spheroid,

The first polymer spheroid has a core-shell structure, and the shell provides an emulsified cosmetic composition.

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

In another aspect, the present invention can provide an emulsified cosmetic having excellent skin stability.

In still another aspect, the present invention can provide an emulsion cosmetic, in which pigment powder is uniformly dispersed without sedimentation or coalescence, and having excellent formulation and emulsion stability.

In another aspect, the present invention can provide a make-up emulsion cosmetics excellent in sustainability and coverage.

In another aspect, the present invention can provide an emulsified cosmetic that can provide a stable formulation without including excess thickener.

In another aspect, the present invention can provide an emulsified cosmetic composition to prevent skin irritation by excluding excess thickeners, dispersants, surfactants and the like.

In another aspect, the present invention can provide an emulsified cosmetic having excellent water resistance and durability.

In another aspect, the present invention can provide an emulsified cosmetics exhibiting a fresh feeling of use and moisture due to the water burst of the emulsified particles.

In another aspect, it is possible to provide an emulsified cosmetic that gives a matte and powdery finish.

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

Hereinafter, with reference to the accompanying drawings, it will be described embodiments of the present application in more detail. However, the technology disclosed in the present application is not limited to the embodiments described herein and may be embodied in other forms. It is merely to be understood that the embodiments introduced herein are provided so that the disclosure can be made thorough and complete, and that the spirit of the present application can be fully conveyed to those skilled in the art. In order to clearly express each component in the drawings, the size, such as the width or thickness of the component, is shown to be somewhat enlarged. In addition, although only a part of the components are shown for convenience of description, those skilled in the art will be able to easily understand the rest of the components. In addition, one of ordinary skill in the art may implement the spirit of the present application in various other forms without departing from the technical spirit of the present application.

As used herein, unless otherwise defined, “substituted” means that at least one hydrogen atom of the functional group of the present invention is halogen (F, Cl, Br or I), hydroxy group, nitro group, imino group (= NH, = NR, R Is an alkyl group having 1 to 10 carbon atoms, amidino group, hydrazine or hydrazone group, carboxyl group, substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, substituted or unsubstituted It may mean to be substituted with a substituted C2-30 heterocycloalkyl group.

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

In this specification, the particle size of the amphipathic anisotropic powder is a measure of the maximum length, which is the longest length of the powder particles. The particle size range of the amphipathic 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 diameters of the single particles. In the present specification, the average particle diameter range of the emulsified particles means that at least 95% of the emulsified particles present in the composition fall within the range.

In this specification, the average particle diameter of pigment powder means the volume average particle diameter calculated | required by calculating the volume average based on the particle size distribution measured by well-known particle size distribution measuring methods, such as an electron microscope image observation and a laser diffraction method.

According to an embodiment of the present invention, an emulsion cosmetic composition including a pigment powder and an amphipathic anisotropic powder is provided. The composition according to the present embodiment may be used as a cosmetic composition for makeup including pigment powder.

In this embodiment, the pigment powder is, for example, 0.001% by weight, 0.002% by weight, 0.003% by weight, 0.004% by weight, 0.005% by weight, 0.006% by weight, 0.007% by weight based on the total weight of the composition At least 0.008 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%, 0.8 At least 0.9% by weight, or at least 1% by weight, at most 30% by weight, at most 29% by weight, at most 28% by weight, at most 27% by weight, at most 26% by weight, at most 25% by weight, at most 24% by weight. Up to 23 wt%, up to 22 wt%, up to 21 wt%, up to 20 wt%, up to 19 wt%, up to 18 wt%, up to 17 wt%, up to 16 wt%, up to 15 wt%, up to 14 wt% Up to 13% by weight, up to 12% by weight, up to 11% by weight, up to 10% by weight, up to 9% by weight, up to 8% by weight, up to 7% by weight, up to 6% by weight, up to 5% by weight Can be. For example, the pigment powder may include 0.001 wt% to 30 wt%, 0.1 wt% to 20 wt%, 0.5 wt% to 10 wt%, or 1 wt% to 5 wt% based on the total weight of the composition. . Within the above range, the skin texture and skin tone improvement effect and usability can be excellent and stable emulsion formulation can be maintained.

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

In the present embodiment, the pigment powder may be a conventional powder used to express the pigment of the makeup cosmetic. For example, the pigment powder may be titanium dioxide, zinc oxide, talc, iron oxide, mica, alumina, polymethyl methacrylate, organic dye, natural dye, and the like.

In one example, when the pigment powder is present in the oil phase of the emulsion composition, it is possible to use surface-hydrophobized pigment powder. The surface hydrophobic treatment may be treated by a method commonly used in the cosmetic field. For example, the pigment powder may be treated with a silicone compound, a fatty acid, an amino acid, but is not limited thereto.

The pigment powder has an average particle diameter of, for example, 0.001 µm or more, 0.005 µm or more, 0.01 µm or more, 0.05 µm or more, 0.1 µm or more, 0.2 µm or more, 0.3 µm or more, 0.4 µm or more, 0.5 µm or more. Μm or more, 0.7 μm or more, 0.8 μm or more, 0.9 μm or more, 1 μm or more, 1.5 μm or more, 2 μm or more, 2.5 μm or more, 3 μm or more, 3.5 μm or more, 4 μm or more, 4.5 μm or more, or 5 μm 6 µm or less, 7 µm or less, 8 µm or less, 9 µm or less, 10 µm or less, 11 µm or less, 12 µm or less, 13 µm or less, 14 µm or less, 15 µm or less, 16 µm or less, 17 µm or less , 18 μm or less, 19 μm or less, 20 μm or less, 21 μm or less, 22 μm or less, 23 μm or less, 24 μm or less, 25 μm or less, 26 μm or less, 27 μm or less, 28 μm or less, 29 μm or less, or Or 30 μm or less. For example, the pigment powder may have an average particle diameter of 0.001 to 6 µm, for example, 0.3 µm to 6 µm. Within the above range, there is a pigment expression effect as a makeup cosmetic, and formulation stability may be excellent.

In this embodiment, the amphipathic anisotropic powder comprises a hydrophilic first polymer spheroid and a hydrophobic second polymer spheroid, wherein the first polymer spheroid and the second polymer spheroid are at least partially counterpart polymer spheroids. The first polymer spheroid has a core-shell structure, and the shell may include a functional group.

In this embodiment, the spheroid is a body composed of a polymer, and may be, for example, a sphere, globoid or oval shape, and based on the longest length in the body cross section. It may have a long axis length of units or nano units.

In one example, the core of the first polymer spheroid and the second polymer spheroid may include a vinyl polymer, and the shell of the first polymer spheroid 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, for example, may be 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 embodiment, the functional group may be a siloxane.

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

In one embodiment, the shell of the first polymer spheroid may be introduced with a hydrophilic functional group.

In one embodiment, the hydrophilic functional group may be a negative or positive charge functional group or polyethylene glycol (PEG) series, carboxylic acid group, sulfone group, phosphate group, amino group, alkoxy group, ester group, acetate group, polyethylene glycol group and hydride It may be one or more selected from the group consisting of a hydroxyl group.

In one embodiment, the shell of the first polymer spheroid may be further introduced with a functional group containing a sugar.

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

In one embodiment, the amphipathic anisotropic powder may have a symmetrical shape, an asymmetrical snowman shape, or an asymmetrical inverse snowman shape based on the bonding portion where the first polymer spheroid and the second polymer spheroid are combined. The snowman shape means that the first and second polymer spheroids having different sizes are bonded to each other.

In one embodiment, the amphiphilic anisotropic powder may have a particle size of 100 to 2500 nm. In another aspect, the amphipathic 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 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, 1000 nm Or more, 1100 nm or more, 1200 nm or more, 1300 nm or more, 1400 nm or more, or 1500 nm or more, 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 1800 nm or less, 1700 nm or less, 1600 nm or less, 1500 nm or less, 1400 nm or less, 1300 nm or less, 1200 nm or less, 1100 nm or less, 1000 nm or less, 900 nm or less, 800 nm or less, 700 nm or less, 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 amphipathic anisotropic powder may form a large emulsion particles of 2 to 500 ㎛. In another aspect, the amphiphilic anisotropic powder may be to form a large emulsion particles of 5 to 400 ㎛, 10 to 350 ㎛, 30 to 300 ㎛, or 50 to 300 ㎛. Specifically, the amphipathic anisotropic powder is at least 2 μm, at least 3 μm, at least 4 μm, at least 5 μm, at least 6 μm, at least 7 μm, at least 8 μm, at least 9 μm, at least 10 μm, at least 11 μm, 12 13 μm or more, 13 μm or more, 14 μm or more, 15 μm or more, 16 μm or more, 17 μm or more, 18 μm or more, 19 μm or more, 20 μm or more, 21 μm or more, 22 μm or more, 23 μm or more, 24 μm or more At least 25 μm, at least 26 μm, at least 27 μm, at least 28 μm, at least 29 μm, at least 30 μm, at least 31 μm, at least 32 μm, at least 33 μm, at least 34 μm, at least 35 μm, at least 36 μm, 37 At least 38 μm, at least 38 μm, at least 39 μm, at least 40 μm, at least 41 μm, at least 42 μm, at least 43 μm, at least 44 μm, at least 45 μm, at least 46 μm, at least 47 μm, at least 48 μm, at least 49 μm. Or 50 µm or more, 500 µm or less, 490 µm or less, 480 µm or less, 470 µm or less, 460 µm or less, 450 µm or less, 440 µm or less, 430 µm or less, 420 µm or less, 410 µm or less, 400 µm or less 390 μm or less 370 µm or less, 360 µm or less, 350 µm or less, 340 µm or less, 330 µm or less, 320 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, To form emulsified particles 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, or 150 μm or less. Can be.

The hydrophobic part and the hydrophilic part of the amphiphilic anisotropic powder may have different orientations with respect to the interface to form large emulsion particles. It is possible to provide an emulsion formulation of various viscosities, including formulations having a low viscosity, flexible feel by the large emulsion particles as described above.

While the interfacial film formed by the general molecular level surfactant forms a dynamic emulsification state, the emulsified particles formed by the amphiphilic anisotropic powder increase the thickness of the interfacial film to several hundred nm and form a strong interfacial film through strong bonding between the powders. Done. Through the formation of such an interfacial film, the emulsion stability is improved and a stable emulsion 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, 0.1% by weight, 0.2% by weight, 0.3% by weight, 0.4% by weight, 0.5% by weight, 0.6% by weight or more, based on the total weight of the composition. , At least 0.7 wt%, at least 0.8 wt%, at least 0.9 wt%, or at least 1.0 wt%, at most 20 wt%, at most 19 wt%, at most 18 wt%, at most 17 wt%, at most 16 wt%, 15 wt% % Or less, 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, 5% or less Up to 4 weight percent, or up to 3 weight percent. For example, the amphiphilic anisotropic powder may be present in an amount of 0.1% to 20% by weight, for example 0.5% to 10% by weight, for example 1% to 4% by weight, for example 1% by weight, based on the total weight of the composition. To 3% by weight. Stable emulsified particles can be formed within the above range, and emulsified particles of an appropriate size can be formed.

The composition according to the present embodiment has 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. , 1900 cps or more, 2000 cps or more, 2100 cps or more, 2200 cps or more, 2300 cps or more, 2400 cps or more, 2500 cps or more, 30000 cps or less, 29000 cps or less, 28000 cps or less, 27000 cps or less, 26000 cps or less , 25000 cps or less, 24000 cps or less, 23000 cps or less, 22000 cps or less, 21000 cps or less, 20000 cps or less, 19000 cps or less, 18000 cps or less, 17000 cps or less, 16000 cps or less, 15000 cps or less, 14000 cps or less, 13000 cps or less, 12000 cps or less, 11000 cps or less, 10000 cps or less, 8900 cps or less, 8800 cps or less, 8700 cps or less, 8600 cps or less, 8500 cps or less, 8400 cps or less, 8300 cps or less, 8200 cps or less, 8100 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 s or less, 7300 cps or less, 7200 cps or less, 7100 cps or less, 7000 cps or less, 6900 cps or less, 6800 cps or less, 6700 cps or less, 6600 cps or less, 6500 cps or less, 6400 cps or less, 6300 cps or less, 6200 cps or less , 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 cps to 7,000 cps, or 2,000 cps to 6,000 cps. The composition according to the present embodiment can form large emulsion particles having a firm emulsification interface, the pigment powder is dispersed in the oil phase, and a single amphiphilic anisotropic powder which does not form the emulsion particles is also present so that the pigment powder is precipitated or coalesced. It can be dispersed uniformly without, and the emulsion stability of the formulation can also be excellent.

The method of manufacturing a cosmetic composition according to an embodiment of the present invention may include preparing the amphiphilic anisotropic powder and emulsifying the oil phase part and the water phase part using the prepared amphipathic anisotropic powder.

In one embodiment of the present invention, the amphiphilic anisotropic powder is prepared by polymerizing a first monomer to prepare a core of a first polymer spheroid, and by coating a core of the first polymer spheroid, the first polymer sp of the core-shell structure It may be prepared to prepare the Lloyd, and reacting the first polymer spheroid and the first monomer of the core-shell structure to prepare an amphiphilic anisotropic powder in which the second polymer spheroid is formed.

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

In the steps (1), (2) and (3), the stirring may be rotational stirring. Rotational stirring is preferred because uniform mechanical mixing is required along with chemical modification to produce uniform particles. The rotary stirring may be rotary stirring in a cylindrical rotary reactor, but the rotary stirring method is not limited thereto.

At this time, the design inside the reactor has a great influence on the powder formation. The size and location of the baffles in the cylindrical rotary reactor and the degree of spacing with the impeller greatly affect the uniformity of the particles produced. It is desirable to minimize the blade gap between the inner blade and the impeller to equalize the convective flow and its strength, and to add the powder reaction liquid to the blade length or less and maintain the impeller rotation speed at a high speed. It may be rotated at a highway of 200 rpm or more, and the ratio of the length of the diameter and the height 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 vary in proportion to the reaction capacity. In addition, the material of the cylindrical rotary reactor may be a ceramic, glass, etc., the temperature at the time of stirring is preferably 50 to 90 ℃.

In the cylindrical rotary reactor, the simple rotation method enables the production of uniform particles and is a low energy method that requires less energy, and has a characteristic of enabling mass production by maximizing reaction efficiency. The tumbling method in which the reactor itself rotates in the related art requires high energy and rotates the reactor at a predetermined angle, thereby requiring high energy and limiting the size of the reactor. Due to the limitations of the reactor size, the amount produced is also limited to small amounts of about several hundred mg to several g, making it unsuitable for mass production.

In one embodiment, the first monomer and the second monomer may be the same or different, specifically, may be a vinyl monomer. In addition, the first monomer added in step (2) is the same as the first monomer used in step (1), 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, may be a peroxide-based, azo-based or a mixture thereof. Moreover, ammonium persulfate, sodium persulfate, potassium persulfate can also be used.

In one example, in step (1), the first monomer and the polymerization initiator may be mixed in 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, in the step (1), the stabilizer may be added together with the first monomer and the polymerization initiator 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 spheroid size control in the initial step (1), and the first polymer spheroid size can be adjusted according to the weight ratio of the first monomer, the polymerization initiator and the stabilizer. Moreover, by mixing in the weight ratio of the said range, there exists an effect which can raise the uniformity of anisotropic powder.

In one example, the stabilizer may be an ionic vinyl monomer, specifically, sodium 4-vinylbenzenesulfonate may be used. Stabilizers prevent swelling of the resulting particles and impart positive or negative charges to the surface of the powder, thereby electrostatically preventing mutual coalescence (bonding) during particle generation.

When the amphiphilic anisotropic powder has a size of 200 to 250 nm, 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: 1 to 2-4 It can be prepared from 1 polymer spheroid.

In addition, 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 225 to 240: 1: 1 to 3, specifically 230 to 235: 1: 1 to 3 It can be prepared from the first polymeric spheroid.

In addition, 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 It can be prepared from spheroids.

In addition, the amphipathic anisotropic powder of the asymmetric snowman shape is the first monomer, the weight ratio of the polymerization initiator and the stabilizer is prepared from 100 to 140: 1: 8 to 12, specifically 110 to 130: 1: 9 to 11 It can be prepared from polymeric spheroids.

In addition, the amphipathic anisotropic powder of the asymmetric inverse snowman shape is made of a weight ratio of the first monomer, the polymerization initiator, and the stabilizer in the range of 100 to 140: 1: 1 to 5, specifically 110 to 130: 1: 1 to 2-4. It can be prepared from 1 polymer spheroid.

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

In one example, the monomer containing the first monomer, the polymerization initiator and the functional group in the step (2) may be mixed in 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 a functional group may be mixed in a weight ratio of 160 to 200: 1: 6 to 40. The degree of coating can be adjusted according to the weight ratio, and the shape of the amphipathic anisotropic powder is subsequently determined according to the degree of coating, and when reacted with the weight ratio, the coating thickness increases to about 10 to 30%, specifically 20%, relative to the initial thickness. The coating is too thick so that powdering does not proceed or is too thin so that the powdering proceeds well without the problem of powdering in multiple directions. Moreover, by mixing in the weight ratio of the said range, there exists an effect which can raise the uniformity of anisotropic powder.

By the step (3), a part of the core of the first polymer spheroid protrudes through the shell from one direction of the first polymer spheroid of the core-shell structure, and the protrusion grows by the polymer of the second monomer to form an anisotropic powder. It can form the form of.

In one 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 are 160 to 250: 1, or 170 to 250: 1, or 180 to 250: 1, or 190 to 250: 1, or 200 to 250: 1, or 210 to 250 It can be mixed in a weight ratio of: 1, or 220 to 250: 1, or 230 to 250: 1, or 240 to 250: 1.

In another aspect, in step (3), the second monomer, the polymerization initiator, and the stabilizer may be added together with the second monomer, the polymerization initiator, and the second monomer, the polymerization initiator, and the stabilizer may be mixed in a weight ratio of 150 to 250: 1: 1: 0.001 to 5. The specific kind of stabilizer is as above-mentioned. By mixing in the weight ratio of the said range, there exists an effect which can raise the uniformity of anisotropic powder.

In one example, the second monomer content in the step (3) may be mixed to 40 to 300 parts by weight when the weight of the first polymer spheroid 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 weight of the first polymer spheroid of the core-shell structure is 100 parts by weight, an asymmetric snowman type powder is obtained, and 100 to 150 parts by weight, or 110 to 150 parts by weight. In the case of parts by weight, a symmetrical powder is obtained, and in the case of 150 to 300 parts by weight, or in the case of 160 to 300 parts by weight, an asymmetric inverse snowman type powder is obtained. Moreover, by mixing in the weight ratio of the said range, there exists an effect which can raise the uniformity of anisotropic powder.

In another embodiment of the present invention, when preparing the amphipathic anisotropic powder according to an embodiment of the present invention, after the step (3), (4) may further include introducing a hydrophilic functional group into the prepared 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 regulator.

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

In one example, the silane coupling agent may be mixed 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 step (3). Hydrophilization can be suitably made within the said range.

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

In one example, the reaction regulator may be mixed in an amount of 85 parts by weight to 115 parts by weight, for example 90 parts by weight to 110 parts by weight, based on 100 parts by weight of the anisotropic powder prepared in step (3). Hydrophilization can be suitably made within the said range.

In another embodiment of the present invention, when preparing the amphipathic anisotropic powder according to an embodiment of the present invention, after the step (3), (4) introducing a functional group containing a sugar into the prepared anisotropic powder It may further include.

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

According to an exemplary embodiment, the sugar-containing silane coupling agent is N- {N- (3-triethoxysilylpropyl) aminoethyl} gluconamide, N- (3-triethoxysilylpropyl) gluconamide And N- {N- (3-triethoxysilylpropyl) aminoethyl} -oligo-hyaluronamide.

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

In one example, the reaction regulator may be mixed in an amount of 85 parts by weight to 115 parts by weight, for example 90 parts by weight to 110 parts by weight, based on 100 parts by weight of the anisotropic powder prepared in step (3). Introduction of the functional group containing a sugar in the said range can be made suitably.

Amphiphilic anisotropic powder according to the above method does not use a crosslinking agent, there is no entanglement in production, yield is high and uniform, and mass production is easier than the tumbling method using a simple stirring method. In particular, there is an advantage that can be mass-produced in the order of several tens g to several tens of kg nano size of 300 nm or less.

The composition according to the present embodiment may be a water-in-oil type emulsion composition. The water-in-oil emulsion composition may be a conventional water-in-oil (W / O) or a silicone water-in-silicone (water / in-silicone, W / S) emulsion composition of the silicone oil, for example For example, it may be water-in-oil type.

When the composition is water-in-oil type or silicon-in-water type, the pigment powder is present in the oil phase, and as described above, it may be stably dispersed without unity between the sedimentation or the pigment powder.

The water-in-oil type or silicone water-in-oil type emulsion composition may have excellent water resistance and durability since the outer phase is an oil phase. The composition may impart freshness through the water burst phenomenon as the inner phase of the large emulsified particles is discharged when the skin is applied, thereby eliminating the sticky or unsightly feeling that may occur because the external wound is an oil phase.

In one embodiment, the composition according to the present embodiment is not a conventional water-in-oil type point / hardness formulation, it is possible to form a formulation characterized by the feeling of use of the water splashed by the large powder emulsified particles. The composition according to the present embodiment can form large emulsion particles having a firm emulsification interface, the pigment powder is dispersed in the oil phase, and a single amphiphilic anisotropic powder which does not form the emulsion particles is also present so that the pigment powder is precipitated or coalesced. It can be dispersed uniformly without, and the emulsion stability of the formulation can also be excellent.

The composition according to the present embodiment can uniformly disperse the pigment powder without using a high content of a thickener, thereby preventing stickiness or skin irritation caused by the thickener.

The composition according to the present embodiment may provide a feeling that the formulation easily collapses upon application of the skin, thereby smoothly spreading.

The composition according to the present embodiment can also prevent skin irritation that may occur due to the addition of a dispersant or excessive surfactant.

The composition according to the present embodiment is excellent in emulsification stability in the emulsion formulation while including the pigment powder, it is possible to simultaneously provide a soft feeling of use as an emulsion composition and freshness and moisture feeling by water burst. In particular, even in the presence of a high content of pigment powder does not affect the stability and can exhibit the effects described above.

The composition according to the present embodiment may exclude the sticky finish by the surfactant, and may provide a matt and powdery finish to the formulation by the presence of amphiphilic anisotropic powder not forming emulsified particles.

The composition according to the present embodiment may exhibit emulsion stability over time in a wide temperature range, and the temperature may be, for example, -15 ° C to 60 ° C, for example, -10 ° C to 55 ° C.

The composition according to the present embodiment may include a large emulsified particle to provide a flexible and soft feeling.

The composition according to the embodiments of the present invention immediately after application is ejected as the inner phase of the large emulsified particles, the water bursts enough to be confirmed with the naked eye to supply moisture to the skin and to clean up the skin texture, and to the pigment powder By giving a color tone to the skin, or to cover the skin tone or texture, it can be in close contact with the matt and powdery imparted by the amphipathic anisotropic powder to maintain a matte effect.

The composition according to the present embodiments may maintain the emulsion formulation stability even if it additionally contains an excess of ethanol or salt to give the formulation a freshness.

Cosmetic compositions according to embodiments of the present invention may be formulated containing a cosmetically or dermatologically acceptable medium or base. These are all formulations suitable for topical application, in the form of suspensions, microemulsions, microcapsules, microgranules or ionic (liposomal) and nonionic vesicle dispersions, or creams, skins, lotions, powders, ointments, sprays or concealers. It may be provided in the form of a stick. It may also be used in the form of a foam or in the form of an aerosol composition further containing a compressed propellant. These compositions can 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 foundation, liquid foundation, concealer, makeup base, but is not limited thereto.

In addition, the cosmetic composition according to the embodiments of the present invention may be a powder, a fatty substance, an organic solvent, a dissolving agent, a thickening agent, a gelling agent, a softening agent, an antioxidant, a suspending agent, a stabilizer, a foaming agent, a fragrance, a surfactant. Commonly used in water, ionic or nonionic emulsifiers, fillers, metal ion sequestrants, chelating agents, preservatives, vitamins, blockers, wetting agents, essential oils, dyes, pigments, hydrophilic or lipophilic active agents, lipid vesicles or cosmetics It may contain adjuvants conventionally used in the cosmetic or dermatological field, such as any other ingredients used. Such adjuvants are introduced in amounts generally used in the cosmetic 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. These examples are only for illustrating the present invention, and it will be apparent to those skilled in the art that the scope of the present invention is not to be construed as being limited by these examples.

[Manufacture example 1-4]

According to the composition of Table 1 to Preparation Examples 1 to 4. Specific methods are described below.

The component used by the following preparation example is as follows.

MeOH: Methanol cosolvent

KPS: Potassium persulfate (initiator)

SVBS: Sodium vinyl benzene sulfonate (stabilizer)

PS: Polystyrene

TMSPA: Trimethoxysilyl propylacrylate (functional group)

AIBN: Azobisisobutyronitrile (polymerization initiator)

Production Example  1.Polystyrene (PS) first polymer Spheroid  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 an aqueous phase to 75 ° C. The reaction was carried out for 8 hours. The reaction was stirred in a cylindrical rotary reactor, the cylindrical rotary reactor was 11 cm in diameter, 17 cm in height, glass, and was rotated at a speed of 200 rpm.

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

To 300 g of the obtained polystyrene (PS) first polymer spheroid, 50 g of styrene (Styrene) as a monomer, 6 g of TMSPA (3- (trimethoxysilyl) propylacrylate), and 0.2 g of azobisisobutyronitrile (Azobisisobutyronitrile, AIBN as a polymerization initiator) ) Was mixed and reacted at 75 ° C. for 8 hours. The reaction was stirred in a cylindrical rotary reactor.

Production Example  3. Amphipathic  Anisotropy Powder  (DB) manufacturing

To 240 g of polystyrene-core shell (PS-CS) aqueous dispersion solution obtained as a result of the reaction, 40 g of styrene as a monomer, 0.35 g of sodium 4-vinylbenzenesulfonate as a stabilizer, and azo as a polymerization initiator 0.2 g of bisisobutyronitrile (Azobisisobutyronitrile, AIBN) was mixed and heated to 75 ° C. for 8 hours. The reaction was stirred in a cylindrical rotary reactor to prepare amphiphilic anisotropic powder.

Production Example  4. Hydrophilized Amphipathic  Anisotropy Powder  Produce

30 g of N- [3- (trimethoxysilyl) propyl] ethylenediamine (N- [3- (trimethoxysilyl) propyl] ethylenediamine) as a silane coupling agent in 600 g of the aqueous dispersion solution of the obtained anisotropic powder and ammonium hydroxide as the reaction regulator. 60 g of ammonium hydroxide was mixed and reacted at 25 ° C. for 24 hours to introduce a hydrophilic functional group. The reaction was stirred in a cylindrical rotary reactor to produce hydrophilized amphiphilic anisotropic powder.

[Examples and Comparative Examples] Preparation of emulsion composition

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

Specifically, the pigments were dispersed at 3500 rpm for 5 minutes on the oil phase where the oil phase components were mixed with respect to the compositions of Tables 2 and 3, and then emulsified at 3500 rpm for 10 minutes by adding the mixed aqueous phase components to the mixed solution. It was added and gradually increased at 3500 rpm for 5 minutes to cool and degas.

Specific components used in the following Examples and Comparative Examples are as follows.

(a) oil:

Butylene glycol dicaprylate / dicaprate (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: Oil obtained by dispersing amphiphilic anisotropic powder of Preparation Example 3 in decamethyl cyclopentasiloxane (DC 345, Dow Corning) to be 13% by weight based on the total weight of the oil dispersion solution. 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㎛)

Iron oxide / triethoxycaprylylsilane (OTS Coating Pigment, OTS-2 Yellow LLXLO, DAITO KASEI KOGYO CO., LTD., 0.6㎛)

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

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

Polymethyl Methacrlate (Artmethyl K-7P, Dongjin Chemical, 6.0㎛)

(d) Preservative: phenoxyethanol, Clariant

(e) Softeners: ethylhexylglycerin, Sensiva SC50, Schulke & Mayr

(f) Moisturizing agent: Butylene glycol (Daicel)

(g) Metal ion blocking agent: EDTA (EDTA, E.D.T.A.-2NA, Neode)

(h) Emulsifying Stabilizer: Sodium Chloride

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

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

Ingredient (Unit: wt%) Example 1 Oil component Butylene Glycol Dicaprylate / Dicaprate 5 Dicaprylylcarbonate 5 Oil Dispersion Amphiphilic 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 Ethylhexylglycerin 0.05 Butylene Glycol, Butyleneglycol 5 EDTA 0.05 Sodium chloride 0.5 Thickener Benton 2

Ingredient (Unit: wt%) Example 2 Comparative Example 1 Oil component Cyclopentasiloxane 29.05 29.05 PG-10 Dimethicone 0 2 Oil Dispersion Amphiphilic Anisotropic Powder 15.4 0 Pigment Titanium Dioxide /
Triethoxycaprylylsilane (OTS Coating Pigment Base) 5 5 Water component Purified water Remaining amount Remaining amount Butylene glycol 14 14 Anisotropic powder 2 0 Thickener Benton 0.5 0.5

Observing the effect of the Test Example 1 and the initial coating formulation observed

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

In the results of FIG. 1, it can be seen that the large emulsion particles are stably formed, and from the result of FIG. 2, when the large emulsion particles are applied, water droplets of the inner phase of the inner phase are discharged and the water droplets can be visually confirmed as shown in the photograph. It can be seen that it occurs.

[Test Example 2] Evaluation temporal emulsion stability

The composition of Example 2 and Comparative Example 1 was maintained for 4 weeks at 30 ℃ to confirm the emulsion stability of the formulation. 3 shows electron micrographs immediately after preparation and after 4 weeks. In the results of FIG. 3, in the case of Example 2, the large emulsion particles are produced and the emulsion particles are stably maintained without change over time. After 4 weeks, the emulsion particles become larger due to coalescence between the emulsion particles, and the emulsion stability is lowered.

[Test Example 3] feeling Evaluation

The composition of Comparative Examples 1 and 1 was used for 30 women in their 20s and 40s, and a 5-point scale (one point: very: about moisture, fresh finish, stickiness, and watery appearance when applying skin) was applied. Poor ~ 5 points: very good) and the average value is shown in Table 4 below.

Evaluation item Example 2 Comparative Example 1 Moisture 4.5 3.0 Refreshing finish 4.2 2.8 Sticky 2.9 3.6 Popping appearance Water droplets Invisible

In the results of Table 4, Example 2 was excellent in the feeling of moisture, fresh finish, low stickiness, it can be seen that the water droplets due to the water burst phenomenon. On the other hand, in the case of Comparative Example 1, a feeling of moisture, a fresh finish was low, stickiness was high, and no water droplets occurred.

Claims (21)

It is an emulsion cosmetic composition containing an amphiphilic anisotropic powder and a pigment powder,
The amphipathic anisotropic powder,
A hydrophilic first polymer spheroid and a hydrophobic second polymer spheroid,
The first polymer spheroid and the second polymer spheroid are combined at least partially in a structure penetrating the relative polymer spheroid,
The first polymer spheroid has a core-shell structure, and the shell includes a functional group,
The shell of the first polymer spheroid is that the sugar-containing functional group is further introduced, emulsified cosmetic composition. The method of claim 1,
The pigment powder comprises 0.001% to 30% by weight based on the total weight of the composition. The method of claim 1,
The pigment powder is a composition comprising one or more selected from the group consisting of titanium dioxide, zinc oxide, talc, iron oxide, mica, alumina, polymethyl methacrylate, organic pigments and natural pigments. The method of claim 1,
The pigment powder has an average particle diameter of 0.001 to 6㎛. The method of claim 1,
The composition comprises 0.1% to 20% by weight of the amphiphilic anisotropic powder relative to the total weight of the composition. The method of claim 1,
The composition has a viscosity of 1000 cps to 20000 cps. The method of claim 1,
The composition is water-in-oil or water-in-silicone. The method of claim 7, wherein
The pigment powder is dispersed in an oil phase. The method of claim 7, wherein
The pigment powder is surface hydrophobized. The method of claim 1,
Wherein said functional group is a siloxane. The method of claim 1,
The core and the second polymer spheroid of the first polymer spheroid includes a vinyl polymer,
The shell of the first polymer spheroid is a vinyl monomer; And a monomer containing a functional group. The method of claim 11,
The vinyl polymer is a vinyl aromatic polymer, composition. The method of claim 11,
The vinyl monomer is a vinyl aromatic monomer. The method of claim 11,
The monomer containing the said functional group is a siloxane containing (meth) acrylate. The method of claim 1,
The amphipathic anisotropic powder has a symmetrical shape, an asymmetrical snowman shape, or an asymmetric inverse snowman shape based on a bonding portion to which the first polymer spheroid and the second polymer spheroid are bound. The method of claim 1,
The amphipathic anisotropic powder has a particle size of 100 to 2500 nm. The method of claim 1,
The amphipathic anisotropic powder forms a large emulsion particles having an average particle diameter of 50 to 300㎛. The method of claim 1,
The shell of the first polymer spheroid is that the hydrophilic functional group is further introduced. The method of claim 18,
Wherein said hydrophilic functional group is at least one selected from the group consisting of a carboxylic acid group, a sulfone group, a phosphate group, an amino group, an alkoxy group, an ester group, an acetate group, a polyethylene glycol group, and a hydroxyl group. delete The method of claim 1,
The sugar-containing functional groups are N- {N- (3-triethoxysilylpropyl) aminoethyl} gluconamide, N- (3-triethoxysilylpropyl) gluconamide and N- {N- (3 -Triethoxysilylpropyl) aminoethyl} -oligo-hyaluronamide, wherein the composition is derived from one or more selected from the group consisting of:

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