KR102071511B1 - Emulsion type cosmetic composition comprising wax microparticles - Google Patents

Abstract

The present specification is an emulsified cosmetic composition comprising fine wax particles formed from an amphiphilic anisotropic powder and fatty alcohol wax, wherein the amphiphilic anisotropic powder includes a hydrophilic first polymer spheroid and a hydrophobic second polymer spheroid. And the first polymer spheroid and the second polymer spheroid are bound at least partially to penetrate the relative polymer spheroid, the first polymer spheroid has a core-shell structure, and the shell comprises a functional group. The emulsion cosmetic composition and its manufacturing method are described.

Description

Emulsion cosmetic composition comprising fine wax particles and a method of manufacturing the same {Emulsion type cosmetic composition comprising wax microparticles}

The present specification relates to an emulsion cosmetic composition including fine wax particles and a method of manufacturing the same.

In the preparation of oil-in-water emulsions using high melting point waxes, in the conventional emulsification system using surfactants, since the surfactants exhibit fluid characteristics at the emulsifying interface, coalescence between the emulsified particles may occur or internal phase precipitation may occur due to the crystallization of the wax. It is difficult to maintain formulation stability.

Therefore, in the preparation of an emulsion cosmetic in which fine wax particles having a micrometer unit size are dispersed, in order to form solid fine wax particles spontaneously by injecting wax directly from the molten phase during the emulsification process, the emulsification conditions must be finely controlled. In the production of such a surfactant system, even after preparation through sophisticated emulsification conditions, the wax particles may be coalesced with each other to cause particle agglomeration and the viscosity may be excessively increased.

Therefore, a method of preparing an emulsified cosmetic is proposed by a method of separately preparing the fine wax particles, and after the emulsification is added to the formulation. In this case, a separate process is required, and thus, economical efficiency is low in the process, and a separate additive must be included for dispersion of the fine wax particles thus prepared, and there is a problem in that the emulsion stability is low.

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 an emulsion cosmetic having excellent emulsion stability including fine wax particles.

In another aspect, the problem to be solved by the present invention is to provide an emulsified cosmetic excellent in emulsification stability that can be formulated in a wide range of viscosity while containing fine wax particles.

In another aspect, the problem to be solved by the present invention is to provide an emulsion cosmetic excellent in emulsification stability of the low viscosity flowable cream formulation, including fine wax particles.

In another aspect, the problem to be solved by the present invention is to provide an emulsion cosmetic having excellent emulsion stability in a wide temperature range.

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

In another aspect, the problem to be solved by the present invention is to provide a method for producing an emulsified cosmetics that can naturally form the fine wax particles during the emulsification process without the process of separately preparing and adding, dispersing the fine wax particles.

In another aspect, the problem to be solved by the present invention is to provide an emulsified cosmetic excellent in stability because the coalescence between the fine wax particles do not occur.

In one aspect, the present invention is an emulsion cosmetic composition comprising fine wax particles formed from amphipathic anisotropic powder and fatty alcohol wax,

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 another aspect, the present invention provides a method for producing an emulsion cosmetic composition comprising the formation of fine wax particles including the fatty alcohol wax and amphipathic anisotropic powder.

In one aspect, the present invention can provide an emulsified cosmetic having excellent emulsion stability including fine wax particles.

In another aspect, the present invention may provide an emulsified cosmetic having excellent emulsification stability, including fine wax particles, and capable of formulating a wide viscosity range.

In another aspect, the present invention may provide an emulsion cosmetic having excellent emulsion stability of a low viscosity, flowable cream formulation including fine wax particles.

In another aspect, the present invention can provide an emulsion cosmetic having excellent emulsion stability in a wide temperature range.

In another aspect, the present invention can provide an emulsion cosmetic having excellent stability over time.

In another aspect, the present invention can provide a method for producing an emulsified cosmetic composition capable of naturally forming the fine wax particles during the emulsification process without the process of separately preparing, adding, and dispersing the fine wax particles.

In another aspect, the present invention can provide an emulsion cosmetic having excellent stability because the coalescence between the fine wax particles does not occur.

1 is an optical photomicrograph of the composition of Examples and Comparative Examples (scale bar: 20㎛, magnification x20).
2 is an optical photomicrograph (a) and a polarized photomicrograph (b) of Example 3, Comparative Example 3 and Example 4 (scale bar: 20 μm, magnification x20).
3 is an optical photomicrograph (a) and a polarized photomicrograph (b) of Example 4 and Comparative Example 4 (scale bar: 20 μm, magnification x20).
Figure 4 compares the optical micrograph after the next day and two months after the preparation of the composition of Example 4 (scale bar: 20㎛, magnification x20).
5 is a graph showing the change in viscosity over two months of the composition of Example 4.

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.

The average particle size of the fine wax particles herein means the average value of the diameters of the single particles. The average particle size range of the fine wax particles herein means that at least 95% of the fine wax particles present in the composition fall within this range.

In the present specification, the fine wax particles mean solid wax particles having a particle size in micro units, and the solids are solid at normal temperature (15 ° C. to 25 ° C.) and normal pressure conditions, and mean no fluidity.

According to one embodiment of the present invention, an emulsified cosmetic composition including fine wax particles formed from amphipathic anisotropic powder and fatty alcohol wax is provided.

In this embodiment, the fatty alcohol wax is, for example, 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%, based on the total weight of the composition. 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%, at most 15 wt% Up to 14 wt%, up to 13 wt%, up to 12 wt%, up to 11 wt%, up to 10 wt%, up to 9 wt%, up to 8 wt%, up to 7 wt%, up to 6 wt%, or up to 5 wt% It may be included as follows. For example, the fatty alcohol wax may be included, for example, from 0.1 wt% to 20 wt%, from 0.5 wt% to 10 wt%, or from 1 wt% to 5 wt%, based on the total weight of the composition. It is possible to stably form the fine wax particles within the above range, the composition can be kept stable.

The fatty alcohol wax may have a melting point of 30 ° C. or higher. The melting point is, for example, at least 30 ° C, at least 31 ° C, at least 32 ° C, at least 33 ° C, at least 34 ° C, at least 35 ° C, at least 36 ° C, at least 37 ° C, at least 38 ° C, at least 39 ° C, at least 40 ° C, 41 ° C or higher, 42 ° C or higher, 43 ° C or higher, 44 ° C or higher, 45 ° C or higher, 46 ° C or higher, 47 ° C or higher, 48 ° C or higher, 49 ° C or higher, 50 ° C or higher, 51 ° C or higher, 52 ° C or higher, 53 ° C or higher 54 degrees C or more, 55 degrees C or more, 56 degrees C or more, 57 degrees C or more, 58 degrees C or more, 59 degrees C or more, 60 degrees C or less, 80 degrees C or less, 79 degrees C or less, 78 degrees C or less, 77 degrees C or less, 76 degrees C or more 75 ° C or less, 74 ° C or less, 73 ° C or less, 72 ° C or less, 71 ° C or less, 70 ° C or less, 69 ° C or less, 68 ° C or less, 67 ° C or less, 66 ° C or less, 65 ° C or less, 64 ° C or less, 63 degrees C or less, 62 degrees C or less, 61 degrees C or less, or 60 degrees C or less. For example, the melting point may be 30 ℃ to 80 ℃, 40 ℃ to 80 ℃, 58 ℃ to 75 ℃. It exists as a solid at room temperature within the above range, stably forms the fine wax particles, can be applied to the skin gently melted by body temperature during skin application.

In the present embodiment, the fine wax particles may be higher fatty alcohol waxes that maintain a solid state at room temperature. For example, it may be at least one selected from behenyl alcohol, betyl alcohol, cetyl alcohol, and cetearyl alcohol, for example, behenyl alcohol.

In the present embodiment, the fine wax particles may impart a soft spreadability and moisturizing power to the composition.

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 amphipathic 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 powder is 2 μm or more, 3 μm or more, 4 μm or more, 5 μm or more, 6 μm or more, 7 μm or more, 8 μm or more, 9 μm or more, 10 μm or more, 11 μm or more, 12 μm At least 13 μm, at least 14 μm, at least 15 μm, at least 16 μm, at least 17 μm, at least 18 μm, at least 19 μm, at least 20 μm, at least 21 μm, at least 22 μm, at least 23 μm, at least 24 μm, 25 μm or more, 26 μm or more, 27 μm or more, 28 μm or more, 29 μm or more, 30 μm or more, 31 μm or more, 32 μm or more, 33 μm or more, 34 μm or more, 35 μm or more, 36 μm or more, 37 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, 380 μm or less, 370 360 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, 250 µm or less, Emulsified particles of 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 formed.

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.

In one embodiment, the amphipathic anisotropic powder may be combined with the fatty alcohol wax to form the fine wax particles.

The fine wax particles may have a size in micrometers, for example, an average particle size of 0.1 μm or more, 0.5 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 At least 4 μm, at least 4 μm, at least 4.5 μm, at least 5 μm, at least 5.5 μm, at least 6 μm, at least 6.5 μm, at least 7 μm, at least 7.5 μm, at least 8 μm, at least 8.5 μm, at least 9 μm, at least 9.5 μm. Or 10 µm or more, 100 µm or less, 95 µm or less, 90 µm or less, 85 µm or less, 80 µm or less, 75 µm or less, 70 µm or less, 65 µm or less, 60 µm or less, 55 µm or less, 50 µm or less , 45 μm or less, 40 μm or less, 35 μm or less, 30 μm or less, 25 μm or less, 20 μm or less, 15 μm or less, or 10 μm or less. For example, the average particle size may be 1 μm to 100 μm, 10 μm to 80 μm, or 30 μm to 50 μm. When applying the composition to the skin within the above range can realize a soft feeling. If the size of the fine wax particles is larger than the above range, problems such as foreign matter, trauma precipitation may occur.

In one example, the fine wax particles may be included by mixing fine wax particles of 1 ㎛ or more and 10 ㎛ or less and fine wax particles of 10 ㎛ or more and 50 ㎛ or less.

In one embodiment, the composition comprises the amphiphilic anisotropic powder in an amount of 0.3% by weight, 0.4% by weight, 0.5% by weight, 0.6% by weight, 0.7% by weight, 0.8% by weight or more, based on the total weight of the composition. , 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%, at most 15 wt%, at most 14 wt%, 13 wt% It may be 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, up to 4% by weight. For example, the amphiphilic anisotropic powder may include 0.3 wt% to 20 wt%, for example, 0.5 wt% to 10 wt%, for example, 1 wt% to 4 wt%, based on the total weight of the composition. It is possible to form a stable emulsion formulation within the above range and to form fine wax particles of appropriate size.

In one example, the composition may include a fatty alcohol wax and the amphiphilic anisotropic powder in a ratio of 1 to 9: 9 to 1, for example 1: 1 to 5 in the weight ratio of fatty alcohol wax: amphiphilic anisotropic powder. Within the above range, fine wax particles may be stably formed, and a stable state may be maintained without coalescence between the fine wax particles.

The composition according to the present embodiment has a viscosity of 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, and at least 1900 cps. More than 2000 cps, More than 2100 cps, More than 2200 cps, More than 2300 cps, More than 2400 cps, More than 2500 cps, More than 2600 cps, More than 2700 cps, More than 2800 cps, More than 2900 cps, More than 3000 cps, More than 30000 cps 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, 9900 cps or less, 9800 cps or less, 9700 cps or less, 9600 cps or less, 9500 cps 9400 cps or less, 9300 cps or less, 9200 cps or less, 9100 cps or less, 9000 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 cps 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 30,000 cps, 2,000 cps to 26,000 cps, or 4,000 cps to 25,000 cps.

The composition according to the present embodiment can provide a composition having a wide range of viscosity as described above because it can maintain the stability of the emulsion formulation even when it contains fine wax particles without including a separate surfactant. In addition, it is possible to provide a stable formulation without the use of a high content of thickeners or dispersants may also be excellent skin safety. In addition, even when the fine wax particles are included in a high content, low viscosity, for example, the composition of low viscosity in the range of 1,000 cps to 10,000 cps, 1,000 cps to 7,000 cps, 2,000 cps to 6,000 cps, or 2,500 cps to 5,000 cps Is possible. It is possible to provide a soft creamy flexible formulation within the above range, and can exhibit a fresh feeling without stickiness.

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 an oil-in-water type or a water-in-oil type emulsion composition, for example, may be an oil-in-water type.

In another embodiment of the present invention, the emulsion cosmetic composition may further comprise a thickener or dispersant. Amphiphilic anisotropic powder according to an embodiment of the present invention can be used to provide emulsification stability, but may further include a thickener or dispersant to adjust the viscosity or to enhance the emulsion stability. The thickener or dispersant may include 0.001 wt% to 5 wt%, for example, 0.01 wt% to 1 wt% based on the total weight of the composition, but is not limited thereto.

The composition according to the present embodiment may include fine wax particles to provide soft spreadability and skin moisturizing power.

The composition according to the present embodiment is excellent in emulsification stability without including the fine wax particles in the emulsion formulation, but including the fine wax particles in a high content, it is possible to give a flexible feeling as an emulsion composition.

The composition according to the present embodiment may implement a low viscosity formulation while including fine wax particles, thereby providing a flexible emulsified cosmetic with a light and fresh feeling.

The composition according to this embodiment can provide a stable emulsion formulation without including an excess of surfactant, it can be excellent skin stability.

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 45 ° C.

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.

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.

The method for preparing an emulsion cosmetic composition according to an embodiment of the present invention may include forming fine wax particles including the fatty alcohol wax and the amphipathic anisotropic powder. According to the present manufacturing method, fine wax particles are separately prepared and do not require a separate process of adding or dispersing them in an emulsion formulation and dispersing them after dispensing. Do. In addition, the emulsion cosmetic composition prepared according to the present method is excellent in emulsification stability as described above with respect to the emulsion cosmetic composition according to the embodiments of the present invention, does not occur between the fine wax particles, it is possible to manufacture a low viscosity formulation And the like. The manufacturing method according to the present embodiment is a method of manufacturing the emulsion cosmetic composition according to the embodiments of the present invention, the description is omitted for the above details.

In the present embodiment, the manufacturing method may include emulsifying by mixing the water phase and the oil phase including the amphiphilic anisotropic powder.

In the present embodiment, the components of the water phase part and the oil phase part may include components included in a conventional emulsion composition.

The oil phase part may include the fatty alcohol wax.

The emulsification can be carried out at a temperature at which the fatty alcohol wax can be melted. For example, the temperature may be performed at 40 ° C. to 80 ° C., for example, 50 ° C. to 70 ° C., but is not limited thereto.

Amphiphilic anisotropic powder and fatty alcohol wax may be combined through the emulsification.

The method of manufacturing an emulsion cosmetic composition according to the present embodiment may further include cooling the emulsified mixture after emulsification. In the cooling step, the fine wax particles may be crystallized and spontaneously formed into a solid shape.

The cooling temperature may be a temperature at which fine wax particles formed by combining amphiphilic anisotropic powder and fatty alcohol wax may be crystallized. The cooling temperature is not limited but may be 20 ° C to 40 ° C, or 15 ° C to 26 ° C.

According to the method of preparing the cosmetic composition according to the embodiments of the present invention, no separate wax wax manufacturing process is required, and no preparation or dispersing of the fine wax particles after preparing the emulsion formulation is required. Therefore, in addition to excellent process economics, fine wax particles can be uniformly dispersed and stably maintained in the formulation even without additives for separate dispersion.

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 polystyrene (PS) first polymer spheroid obtained above, 50 g of 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 oil-in-water emulsion compositions of Examples 1 to 4 and Comparative Examples 1 to 4 were prepared according to the compositions of Table 2 below.

Specifically, the oil phase part was dissolved in a warmed (55-80 ° C.) and dissolved in the water phase part (55-80 ° C.) with respect to the composition shown in Table 2 below. Differential emulsification was cooled and degassed.

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

(a) fatty alcohol wax:

Behenyl alcohol, Lanette 22-80, Cognis, Melting Point 67 ~ 70 ℃

Cetearyl Alcohol (Cetearyl Alcohol, Cetos KD, Jeongnam Emulsification, Melting Point 45 ~ 56 ℃)

(a ') Shea butter (Shea butter, Shea butter, Sophim, Melting point 28 ~ 36 ℃)

(b) Surfactant: Glyceryl Stearate and PEG-100 Stearate, Arlacel 170-PA- (SG), Uniquema

(c) Water Dispersion Amphiphilic Anisotropic Powder: A solution prepared by dissolving 10% by weight of amphiphilic anisotropic powder in Preparation Example 3 in 55% by weight of purified water and 35% by weight of butylene glycol.

(d) Moisturizing agent: Butylene glycol (1,3-butylene glycol, Butylene glycol, Daicel)

(e) Preservatives: phenoxyethanol (PHENOXYETHANOL P5, CLARIANT)

(f) Softener: ethylhexylglycerin (Sensiva SC 50, Schulke & MAYR)

 (g) Oil: Hydrogenated C6-14 Olefin Polymers, Puresyn ™ 4, ExxonMobil Chemical

(h) Thickeners: Carbomer, Flogel FG 700, SNF

(i) Neutralizer: tromethamine (Tris amino ultra PC, Dow Chemicals)

[Property evaluation]

(1) Confirmation of the formation of fine wax particles: The compositions of the above Examples and Preparation Examples were prepared and observed by an optical microscope to determine whether fine wax particles were formed. Optical micrographs of each composition are shown in Figs.

(2) Fine wax particle size: Table 2 shows the average particle size of the fine wax particles from the optical micrograph.

(3) Viscosity: The compositions of the above Examples and Preparation Examples were measured using a Viscometer (LVDV-II + PRO, BROOKFIELD, USA) at 30 ° C., and the results are shown in Table 2.

(4) Evaluation of composition stability over time: The composition of Example 4 was maintained at 30 ° C. for 2 months. The particle change of the composition over time is shown in the optical micrograph of Figure 4, the graph of Figure 5 shows the results of the formulation viscosity change over time.

(Unit: weight%) Comparative Example 1 Comparative Example 2 Example 1 Example 2 Example 3 Comparative Example 3 Example 4 Comparative Example 4 Deionized water 65 65 65 65 65 74 35 74 Dispersion Amphipathic
Anisotropic powder
(ASP 10%) 10 10 10 10 10 One 40 0 Butylene glycol 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 Phenoxyethanol 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 Ethylhexylglycerin 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Hydrogenated C6-14 Olefin Polymer 9 5 9 5 9 5 5 5 Shea Butter One 5 Behenyl Alcohol One 5 5 5 5 Cetearyl Alcohol One Deionized water 10 10 10 10 10 10 10 10 Glyceryl Stearate &
PEG-100 stearate 0 0 0 0 0 0 0 One Carbomer 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Tromethamine 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Viscosity (cps) 11198 8348 10448 8348 4300 15074 23895 20000 Particle size (㎛) 20-30 30-60 60 or more 30-50 30-50 More than 200 below 10,
30-50 Around 15 Particle Type oil paint
particle oil paint
particle Crystallized particles Crystallized particles Crystallized particles Giant
crystal Crystallized particles oil paint
particle

In the above results, it can be seen that in the case of Comparative Examples 1 and 2 in which a fatty alcohol wax is used instead of shea butter, wax particles are not formed and general emulsified particles are formed, so that spontaneous formation of fine wax particles is impossible. In the case of Examples 1 to 4, it can be confirmed that stable fine wax particles are formed as crystallized particles using fatty alcohol wax. In Comparative Example 3 containing a small amount of amphiphilic anisotropic powder in the amount of 0.1% by weight, since the emulsification is unstable, it becomes agglomerates into large crystals and does not form fine wax particles. In addition, in Comparative Example 4 using a surfactant instead of an amphiphilic anisotropic powder, general emulsified particles are formed, and fine wax particles as in Example are not crystallized.

In addition, from the results of Figures 4 and 5, the composition of Example 4 maintains the fine wax particles unchanged even after 2 months, it can be confirmed that the viscosity is kept constant without significant change for 2 months since the formulation remains stable. have.

Claims (24)

Emulsified cosmetic composition comprising fine wax particles formed from amphipathic anisotropic powder and fatty alcohol wax,
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, the shell comprises a functional group, an emulsified cosmetic composition. The method of claim 1,
The fatty alcohol wax comprises 0.1 to 20% by weight based on the total weight of the composition. The method of claim 1,
The fatty alcohol wax has a melting point of 30 ℃ to 80 ℃. The method of claim 1,
The fatty alcohol wax is at least one selected from behenyl alcohol (behenyl alcohol), cetyl alcohol (cetyl alcohol), and cetearyl alcohol (cetearyl alcohol), the composition. The method of claim 1,
Wherein said fine wax particles have an average particle size of 1 μm to 100 μm. The method of claim 1,
The composition comprises 0.3% to 10% by weight of the amphipathic anisotropic powder relative to the total weight of the composition. The method of claim 1,
The composition has a viscosity of 1000 to 20000 cps The method of claim 1,
The composition has a viscosity of 1000 to 7000 cps. The method of claim 1,
The composition is oil-in-water. 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 asymmetrical inverse snowman shape based on the bonding portion of the first polymer spheroid and the second polymer spheroid. The method of claim 1,
The amphipathic anisotropic powder has a particle size of 100 to 2500 nm. 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 17,
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. The method of claim 1,
The shell of the first polymer spheroid is a composition wherein a sugar-containing functional group is further introduced. The method of claim 19,
The sugar-containing functional groups include 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: As a manufacturing method of the emulsion cosmetic composition in any one of Claims 1-20,
A method for producing an emulsion cosmetic composition comprising forming fine wax particles including the fatty alcohol wax and amphipathic anisotropic powder. The method of claim 21,
The manufacturing method,
a) mixing an aqueous phase containing amphiphilic anisotropic powder and an oil phase containing fatty alcohol wax,
b) A method for producing an emulsion cosmetic composition comprising emulsifying the mixture of a). The method of claim 22,
Emulsifying in b) is to perform at 40 ℃ to 80 ℃, the method of producing an emulsion cosmetic composition. The method of claim 23, wherein
After step b) above,
c) cooling the resultant product of b) to 15 ° C to 26 ° C to form microparticle wax.

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