WO2015183042A1

WO2015183042A1 - Cosmetic composition containing amphiphilic anisotropic powder and method for preparing same

Info

Publication number: WO2015183042A1
Application number: PCT/KR2015/005432
Authority: WO
Inventors: 남진; 김영선; 진유진; 피봉수; 안순애; 강병영; 한상훈
Original assignee: (주)아모레퍼시픽
Priority date: 2014-05-30
Filing date: 2015-05-29
Publication date: 2015-12-03

Abstract

Disclosed are a cosmetic composition containing an amphiphilic anisotropic powder and a method for preparing the same. The cosmetic composition contains an amphiphilic anisotropic powder which maximizes chemical interface activity and physical interface activity by controlling amphiphilic property, which is the characteristic of an existing surfactant, and geometric property, which is the characteristic of powder macroparticles, thereby forming an emulsion having excellent and stabilized emulsifying capacity.

Description

Cosmetic composition comprising amphipathic anisotropic powder and method for preparing same

Disclosed herein is a cosmetic composition comprising an amphiphilic anisotropic powder and a method of preparing the same.

The surfactant forms a curved surface in the oil or water phase depending on the packing parameters, one part of the surfactant is hydrated to the water phase, and the other part is solvated by oil, thus being water-in-oil type (w / o). Or form an oil-in-water (o / w) emulsion.

On the other hand, unlike conventional molecular surfactants, picking emulsions using spherical solid powders are w / o or o / w depending on the degree of wetting at the interface of the solid powder surface, that is, the degree of lipophilic or hydrophilicity. To form an emulsion. As a factor that determines the directionality of the membrane, there is a contact angle, and when the contact angle is smaller than 90 degrees, a large part of the surface of the particle exists as an aqueous phase to generate o / w. When the contact angle is larger than 90 degrees, it is present on the oil side to generate w / o Create

In general, pickling emulsions are capable of producing larger emulsion particles compared to conventional surfactant systems, and the resulting emulsion particles form stabilized emulsion particles by preventing coalescence due to physical stabilization. Therefore, the method of changing the physical properties of the emulsified particles according to the particle size and the properties of the pickling solid particles, and the physical properties have been studied. However, pickering solid particles retain a hydrophilic or lipophilic surface but do not retain amphoteric like surfactants.

Attempts have been made to increase the interfacial activity by imparting an amphiphilic surfactant to spherical powder particles used for pickling, such as Janus spherical particles. However, there is a problem that geometric limitations and uniform mass production is difficult, so practical applications have not been achieved.

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

In one aspect, the present specification is a cosmetic composition to form an emulsion with excellent emulsification power by containing an amphiphilic anisotropic powder in which the amphiphilic interfacial properties are introduced into the anisotropic polymer powder to maximize the chemical interfacial activity and physical interfacial activity The purpose is to provide.

In one aspect, the technology disclosed herein is a cosmetic composition, wherein the composition comprises an amphiphilic anisotropic powder, the powder comprises a hydrophilic first polymer spheroid and a hydrophobic second polymer spheroid, the agent The first polymer spheroid and the second polymer spheroid are combined at least partially in a structure that penetrates the counterpart polymer spheroid, wherein the first polymer spheroid has a core-shell structure and the shell comprises a functional group. to provide.

According to an exemplary embodiment, 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 functional group. .

According to an exemplary embodiment, the vinyl polymer may be a vinyl aromatic polymer.

According to one exemplary embodiment, the functional group may be a siloxane.

According to an exemplary embodiment, the shell of the first polymer spheroid may be further introduced with a hydrophilic functional group.

According to an exemplary embodiment, the hydrophilic functional group may be at least one selected from the group consisting of carboxylic acid group, sulfone group, phosphate group, amino group, alkoxy group, ester group, acetate group, polyethylene glycol group and hydroxyl group. .

According to an exemplary embodiment, the amphiphilic 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 bonded to each other. Can be.

According to one exemplary embodiment, the amphiphilic anisotropic powder may have a particle size of 100 to 2500 nm.

According to one exemplary embodiment, the amphiphilic anisotropic powder may form large emulsified particles of 2 to 200 ㎛.

According to an exemplary embodiment, the cosmetic composition may have multiple formulations of oil-in-water (O / W), water-in-oil (W / O), W / O / W or O / W / O.

According to one exemplary embodiment, the amphiphilic anisotropic powder may be contained in an amount of 0.1 to 15% by weight based on the total weight of the cosmetic composition.

In another aspect, the technique disclosed herein is a method of preparing the cosmetic composition, the method comprising the steps of (1) preparing a core of a first polymer spheroid by stirring the first monomer and the polymerization initiator; (2) stirring the core of the prepared first polymeric spheroid with a compound including a first monomer, a polymerization initiator, and a functional group to prepare a coated first polymer spheroid having a core-shell structure; (3) stirring the prepared first polymer spheroid having a core-shell structure with a second monomer and a polymerization initiator to prepare an anisotropic powder having a second polymer spheroid formed thereon; (4) preparing an amphiphilic anisotropic powder by introducing a hydrophilic functional group into the prepared anisotropic powder; And (5) emulsifying using the prepared amphipathic anisotropic powder.

According to one exemplary embodiment, the stirring method in (1) to (3) may be rotary stirring in a cylindrical reactor.

According to an exemplary embodiment, in the step (1), the first monomer and the polymerization initiator may be mixed in a weight ratio of 100 to 1000: 1.

According to an exemplary embodiment, the compound containing a functional group in the step (2) may be a siloxane-containing (meth) acrylate.

According to an exemplary embodiment, the compound including 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.

According to an exemplary embodiment, in the step (3), the second monomer and the polymerization initiator may be mixed in a weight ratio of 150 to 250: 1.

According to an exemplary embodiment, in step (4), the hydrophilic functional group may be introduced into the silane coupling agent.

In one aspect, the technology disclosed herein contains an amphipathic anisotropic powder that maximizes chemical and physical surfactant properties by adjusting the geometric properties of the amphiphilic and macromolecular particles that are characteristic of existing surfactants, It has the effect of providing a cosmetic composition that is excellent in emulsifying power and forms a stabilized emulsion.

In another aspect, the technology disclosed herein has the effect of providing a cosmetic composition that can be prepared in a variety of formulations and has a matte feeling without the stickiness or irritation of existing surfactants.

1 is a schematic diagram showing an emulsified form of the amphipathic anisotropic powder according to an embodiment of the present invention.

2 is an optical micrograph of an emulsified (O / W) composition of anisotropic powders containing various kinds of oils (25%) according to one embodiment of the present invention. (Scale bar: 10 μm)

Figure 3 is an optical micrograph of the emulsion composition according to the anisotropic powder content of the cosmetic composition according to an embodiment of the present invention. (Scale bar: 10 μm)

Figure 4 is an image showing the formulation change according to the oil / water composition ratio of the anisotropic powder emulsion composition of the cosmetic composition according to an embodiment of the present invention (O / W, W / O). (Scale bar: 20 μm)

5 is a photograph showing an emulsification test of the cosmetic composition according to an embodiment of the present invention. (Scale bar: 10 μm)

Figure 6 is a visual observation photograph of the emulsified particles of the cosmetic composition according to an embodiment of the present invention.

Figure 7 is a picture of the oil-in-water particles of the oil-in-water type and the existing surfactant system of the cosmetic composition according to an embodiment of the present invention. (Scale bar: 10 μm)

8 is an optical micrograph of the multiple formulation of the cosmetic composition according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail.

As used herein, unless otherwise defined, "substituted" means that one or more hydrogen atoms of the functional groups of the present invention are halogen (F, Cl, Br or I), hydroxy, nitro, imino (= 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 substituted with a heterocycloalkyl group having 2 to 30 ring carbon atoms.

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

In the present specification, the particle size of the amphipathic powder is a measure of the maximum length, which is the longest length in the powder particles.

As used herein, a 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. Or have a long axis length in nano units.

According to an exemplary embodiment, the vinyl polymer may be a vinyl aromatic polymer, for example, may be polystyrene.

According to one exemplary embodiment, the functional group may be a siloxane.

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

According to an exemplary embodiment, the amphiphilic 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 bonded to each other. Can be. The snowman shape means that the first and second polymer spheroids having different sizes are bonded to each other.

According to one exemplary embodiment, the amphiphilic anisotropic powder may have a particle size of 100 to 2500 nm. In another aspect, the amphipathic powder may have a particle size of 100 to 1500 nm, 100 to 500 nm, or 200 to 300 nm. In this case, the particle size means the length of the longest portion of the amphipathic powder. Specifically, the amphiphilic 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, or 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 or less , 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 nm or less, 500 nm or less, 400 nm or less, 300 nm or less, or 200 nm or less.

According to one exemplary embodiment, the amphiphilic anisotropic powder may form large emulsified particles of 2 to 200 ㎛. In another aspect, the amphipathic powder may be to form a large emulsion particles of 5 to 200 ㎛, 10 to 100 ㎛, 10 to 50 ㎛, or 25 ㎛. Specifically, the amphipathic powder is 2 μm or more, 5 μm or more, 10 μm or more, 15 μm or more, 20 μm or more, 25 μm or more, 30 μm or more, 40 μm or more, 50 μm or more, 80 μm or more, 100 μm 130 µm or more, 150 µm or more and 180 µm or more, 200 µm or less, 180 µm or less, 150 µm or less, 130 µm or less, 100 µm or less, 80 µm or less, 50 µm or less, 40 µm or less, 30 µm or less , Emulsified particles of 25 μm or less, 20 μm or less, 15 μm or less, 10 μm or less, or 5 μm or less can be formed.

The hydrophobic and hydrophilic portions of the amphiphilic anisotropic powder have different orientations with respect to the interface to form large emulsion particles, thereby enabling the implementation of a formulation having excellent usability. Conventional molecular-level surfactants have made it difficult to produce stabilized large emulsion particles having a particle diameter of several tens of micrometers, and the surface thickness of the surfactant was about several nm, whereas the surface thickness of the amphiphilic anisotropic powder disclosed herein Is increased to about several hundred nm and the emulsion stability can be greatly improved as the stabilized interfacial film is formed due to the strong bonding between the powders.

According to an exemplary embodiment, the cosmetic composition may have multiple formulations of oil-in-water (O / W), water-in-oil (W / O), W / O / W or O / W / O. Only the amphiphilic anisotropic powder disclosed herein can be composed of a variety of emulsion formulations, and even in the case of an emulsion formulation of a high amount of oil has a powdery and matte feeling, there is no sticky feeling of the existing surfactant.

The cosmetic composition may be an oil-in-water (O / W) formulation having an amphipathic anisotropic powder, oil phase and water phase content ratio of 0.1 to 15: 5 to 60: 10 to 80 by weight. In another aspect, the cosmetic composition may be an oil-in-water (O / W) formulation having an amphipathic anisotropic powder, oil phase and water phase content ratio of 0.1 to 5: 15 to 40: 50 to 80 by weight. In addition, the cosmetic composition may be a water-in-oil (W / O) formulation having an amphipathic anisotropic powder, oil phase and water phase content ratio of 1 to 15: 50 to 80: 10 to 30 by weight. The oil phase portion may include one or more selected from the group consisting of liquid fats, solid fats, waxes, hydrocarbon oils, higher fatty acids, higher alcohols, synthetic ester oils and silicone oils.

According to an exemplary embodiment, the amphipathic anisotropic powder may be added together with the aqueous phase to prepare an emulsion cosmetic composition.

According to one exemplary embodiment, the amphiphilic anisotropic powder may be contained in an amount of 0.1 to 15% by weight based on the total weight of the cosmetic composition. In another aspect, the amphipathic anisotropic powder may be contained 0.5 to 5% by weight based on the total weight of the cosmetic composition. Specifically, the amphiphilic anisotropic powder may be 0.1% by weight, 1% by weight, 2% by weight, 4% by weight, 6% by weight, 8% by weight, 10% by weight or more, based on the total weight of the cosmetic composition. It may be up to 12% by weight, up to 15% by weight, up to 12% by weight, up to 10% by weight, up to 8% by weight, up to 6% by weight, up to 4% by weight, up to 2% by weight or up to 1% by weight. By controlling the amphiphilic anisotropic powder content, the emulsified particle size can be adjusted from several μm to several tens or hundreds of μm.

According to one exemplary embodiment, the stirring method in (1) to (3) may be rotary stirring in a cylindrical reactor. Rotational agitation 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 wing and the impeller to equalize the convective flow and its strength, and to supply the powder reaction liquid below the wing length 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, and the like, the temperature of the stirring is preferably 50 to 90 ℃.

In the cylindrical rotary reactor, the simple rotary 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, thus requiring high energy and restricting 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.

According to one exemplary 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.

According to an exemplary embodiment, the vinyl monomer may be vinyl aromatic. In one example, the vinyl monomer may be substituted or unsubstituted styrene.

According to one exemplary embodiment, 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.

According to an exemplary embodiment, in the 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), a 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 size adjustment of the first polymer spheroid in the initial stage (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.

According to an exemplary embodiment, 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 to electrostatically prevent mutual coalescence (bonding) during particle generation.

When the amphipathic powder has a size of 200 to 250 nm, the first ratio of 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: 1-2 to 4 It can be prepared from polymeric spheroids.

In addition, when the amphipathic 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 polymer spheroid.

In addition, when the amphiphilic powder has a size of 1100 to 2500 nm, the first polymer spar 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 Lloyd.

In addition, the asymmetric snowman-like amphiphilic powder has a weight ratio of the first monomer, the polymerization initiator, and the stabilizer of 100 to 140: 1: 8 to 12, specifically 110 to 130: 1: 9 to 11 of the first polymer It can be prepared from spheroids.

In addition, the asymmetric inverse snowman-like amphiphilic powder has a weight ratio of the first monomer, the polymerization initiator, and the stabilizer is 100 to 140: 1: 1 to 5, specifically 110 to 130: 1: 2 to 4 It can be prepared from polymeric spheroids.

According to an exemplary embodiment, the compound containing a functional group in the step (2) may be a compound containing a siloxane. Specifically, it may be a siloxane-containing (meth) acrylate, 3- (trimethoxysilyl) propyl acrylate, 3- (trimethoxysilyl) propyl methacrylate, vinyltriethoxysilane, vinyltrimethoxysilane Or mixtures thereof.

According to an exemplary embodiment, the compound including 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 compound including the first monomer, the polymerization initiator and the 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, and the shape of the amphiphilic anisotropic powder is made according to the degree of coating, and when the reaction is carried out at the weight ratio, the coating thickness increases to about 10 to 30%, specifically 20%, 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.

According to an exemplary embodiment, 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 and the polymerization initiator to mix the second monomer, the polymerization initiator and the stabilizer 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.

According to an exemplary embodiment, 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.

According to an exemplary embodiment, the hydrophilic functional group in step (4) is not limited thereto, but may be introduced using a silane coupling agent and a reaction modifier.

According to one exemplary embodiment, the silane coupling agent is (3-aminopropyl) trimethoxysilane, N- [3- (trimethoxysilyl) propyl] ethylenediamine, N- [3- (trimethoxysilyl ) Propyl] ethylenediammonium chloride, (N-succinyl-3-aminopropyl) trimethoxysilane, 1- [3- (trimethoxysilyl) propyl] urea and 3-[(trimethoxysilyl) propyloxy ] -1,2-propanediol may be one or more selected from the group consisting of, specifically N- [3- (trimethoxysilyl) propyl] ethylenediamine.

According to an exemplary embodiment, 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.

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

According to an exemplary embodiment, the reaction modifier 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.

Attempts have been made to increase the interfacial activity by imparting an amphiphilic surfactant to spherical powder particles used in conventional pickling. Examples are Janus spherical particles, but geometric limitations and uniform mass production are difficult. No practical application has been made. On the other hand, the method of preparing the amphiphilic powder disclosed herein is not entangled in the production because there is no crosslinking agent, the 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 size of several tens g to several tens of kg nano size of 300 nm or less.

Hereinafter, the present invention will be described in more detail with reference to Examples. These examples are only for illustrating the present invention, it will be apparent to those skilled in the art that the scope of the present invention is not to be construed as limited by these examples.

제조예Production Example 1. 폴리스티렌(Polystyrene, PS) 제1 고분자 1.Polystyrene (PS) first polymer 스페로이드Spheroid 제조 Produce

40 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.

제조예Production Example 2. 코어-쉘(Core-Shell, CS) 구조의 코팅된 제1 고분자 스페로이드 제조 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 as a polymerization initiator (Azobisisobutyronitrile, AIBN) ) Was mixed and reacted at 75 ° C. for 8 hours. The reaction was stirred in a cylindrical rotary reactor.

제조예Production Example 3. 이방성 3. Anisotropy 분체Powder 제조 Produce

To 240 g of polystyrene-coreshell (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.

제조예Production Example 4. 4. 친수화Hydrophilization

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 anisotropic powder thus obtained, 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. The compound used as the silane coupling agent is shown in Table 1.

실시예Example 1~4. 1-4.

An emulsion cosmetic composition using the obtained amphipathic anisotropic powder was prepared. Multiple formulations of oil-in-water (O / W), water-in-oil (W / O), W / O / W, O / W / O were prepared, and specific compositions are shown in Tables 1, 2, and 3 below.

Table 1

weight%	Example 1 (O / W)	Example 2 (W / O)
Puresyn4	25	75
Cetoskd	0.8	0.5
DB	0.3	0.25
C981	0.2	-
PE	0.4	0.3
TAU	0.1	-
Water	up to 100	up to 100

TABLE 2

weight%	Example 3 (W / O / W)
Example 2 (W / O)	16
DB	0.5
C981	One
TAU	0.1
PE	0.05
Water	up to 100

TABLE 3

weight%	Example 4 (O / W / O)
Puresyn4	85
Example 1 (O / W)	7
DB	0.5
C981 (1%)	-
PE	0.2
TAU	-
Water	up to 100

Puresyn4: Hydrogenated poly (C6-14) olefin (oil)

CetosKD: Cetearyl alcohol (wax)

TAU: Tromethamine (acid regulator)

PE: Phenoxyethanol (preservative)

C981: Polyacrylate (Thickener)

DB: Amphiphilic Anisotropic Powder

실험예Experimental Example 1. One.

An optical micrograph of the O / W emulsion particles formed during emulsification after adding oil and wax to the aqueous part in which the anisotropic powder is dispersed is shown in FIG. 1. In addition, Squalane, Cetyl octanoate (CEH), Isopropyl palmitate (IPP), Caprylic-capric triglyceride (CSA), Hydrogenated polyisobutene (Panalane L + as an oil instead of 25% of Hydrogenated poly (C6-14) olefin (Puresyn4) of Example 1 The optical micrographs of 25% of 14E) are also shown.

As a result, it was confirmed that even with a small amount of anisotropic powder content (0.3%), it is possible to form large emulsion particles having a diameter of several tens of micrometers stabilized in a composition including various oils (ester-based, hydrocarbon-based, etc.).

실험예Experimental Example 2. 2.

In the same manner as in Example 1, but by controlling the content of the amphipathic anisotropic powder. 3 shows optical micrographs of O / W emulsified particles formed at 2.6%, 2.34%, 2.08%, and 1.82%, respectively.

As a result, as shown in Figure 3, by controlling the content of the amphiphilic anisotropic powder it can be seen that the emulsion particle size can be adjusted from several ㎛ to tens, hundreds of ㎛. As the anisotropic powder content increased, the surface area of the interfacial membrane between the oil and the water phase increased, which resulted in a decrease in the emulsified particle size and an increase in the emulsified particle number.

실험예Experimental Example 3. 3.

The formulation change according to the oil / water composition ratio of the material obtained in Example 1 was observed.

In order to confirm the various formulation properties when changing the ratio of water / oil / anisotropic powder, the ratio of water / oil / anisotropic powder is (a) 75/20/5, (b) 38/60/2 , (c) the results of observing the formulation formed when 28/70/2 are shown in FIG. 4.

When the water phase content is large, the large emulsion particles mainly formed O / W and the creaming phenomenon appeared to rise to the upper portion over time. On the contrary, when the oil content is high, sedimentation phenomenon appears that mainly forms W / O and sinks to the lower layer with time. The presence of oil and water in similar amounts resulted in an overall uniform emulsion particle. Therefore, it was found that O / W and W / O formulations can be changed by controlling the content of anisotropic powder, oil and water.

실험예Experimental Example 4. 4.

Emulsifying power experiment was conducted with the emulsion obtained in Example 1. The particle state was observed by microscopic observation immediately after emulsification using simple hand shaking.

After the composition was mixed in a glass vial, stable emulsion particles were formed upon manual emulsification, and the results are shown in FIGS. 5 and 6. In Figure 5 (a) it can be seen that the emulsified particles are about 100㎛ (anisotropic powder concentration 0.7%), the first vial in Figure 5 (b) shows when the anisotropic powder is dispersed in the oil and water interface, As shown in the first vial, the third vial indicated that the anisotropic powders were placed at the oil / water interface, and that stable large emulsified particles were produced by light hand-shaking alone.

In addition, it was confirmed in Figure 6 to form a large emulsion particles that can be observed with the naked eye. It could be confirmed that even by simply performing a handshaking, a stabilized giant emulsion was formed.

실험예Experimental Example 5. 5.

The result of observing the micrograph of the emulsion particle with respect to the emulsion obtained in Example 1 is shown in FIG. 25% oil Puresyn 4 (Hydrogenated poly (C6-14) olefin) composition (a) 1% anisotropic powder, (b) 0.7% anisotropic powder, and (c) 1% Tego Care 450 (Polyglyceryl-3 Methylglucose Distearate) Contained. Figure 7 shows that the size is significantly increased (about 20 ~ 100㎛) compared to the particle size (2 ~ 5㎛) by the conventional surfactant system.

실험예Experimental Example 6. 6.

Multiple formulations can be formed by repeating emulsification for each of the emulsions obtained in Example 1 above. FIG. 8 shows optical micrographs of Example 3 (W / O / W) and Example 4 (O / W / O) formulations.

As described above, specific portions of the present disclosure have been described in detail, and for those skilled in the art, these specific techniques are merely preferred embodiments, and the scope of the present disclosure is not limited thereto. Will be obvious. Thus, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

Claims

In the cosmetic composition,

The composition comprises an amphipathic anisotropic powder,

The powder comprises 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 that penetrates the relative polymer spheroid,

The first polymer spheroid has a core-shell structure and the shell comprises a functional group, cosmetic composition.
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 comprises a copolymer of a vinyl monomer and a functional group.
The method of claim 2,

The vinyl polymer is a cosmetic composition, characterized in that the vinyl aromatic polymer.
The method of claim 1,

The functional group is a cosmetic composition, characterized in that the siloxane.
The method of claim 1,

The shell of the first polymer spheroid cosmetic composition, characterized in that the addition of a hydrophilic functional group.
The method of claim 5,

The hydrophilic functional group is a cosmetic composition, characterized in that at least one selected from the group consisting of carboxylic acid groups, sulfone groups, phosphate groups, amino groups, alkoxy groups, ester groups, acetate groups, polyethylene glycol groups and hydroxyl groups.
The method of claim 1,

The amphiphilic anisotropic powder has 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 method of claim 1,

The amphipathic anisotropic powder is a cosmetic composition, characterized in that the particle size of 100 to 2500 nm.
The method of claim 1,

The amphipathic anisotropic powder is a cosmetic composition, characterized in that to form large emulsion particles of 2 to 200 ㎛.
The method of claim 1,

The cosmetic composition is an oil-in-water type (O / W), water-in-oil type (W / O), W / O / W or O / W / O cosmetic composition, characterized in that the emulsion composition having a multiple formulation.
The method of claim 1,

The amphipathic anisotropic powder is a cosmetic composition, characterized in that contained 0.1 to 15% by weight based on the total weight of the cosmetic composition.
A method for preparing a cosmetic composition according to any one of claims 1 to 11, wherein the method

(1) stirring the first monomer and the polymerization initiator to prepare a core of the first polymer spheroid;

(2) stirring the core of the prepared first polymeric spheroid with a compound including a first monomer, a polymerization initiator, and a functional group to prepare a coated first polymer spheroid having a core-shell structure;

(3) stirring the prepared first polymer spheroid having a core-shell structure with a second monomer and a polymerization initiator to prepare an anisotropic powder having a second polymer spheroid formed thereon;

(4) preparing an amphiphilic anisotropic powder by introducing a hydrophilic functional group into the prepared anisotropic powder; And

(5) emulsifying using the prepared amphipathic anisotropic powder; a method of manufacturing a cosmetic composition comprising a.
The method of claim 12,

The method of stirring in (1) to (3) is a method for producing a cosmetic composition, characterized in that the rotary stirring in the cylindrical reactor.
The method of claim 12,

The first monomer and the polymerization initiator in the step (1) is a method for producing a cosmetic composition, characterized in that mixing in a weight ratio of 100 to 1000: 1.
The method of claim 12,

The compound containing a functional group in the step (2) is a method for producing a cosmetic composition, characterized in that the siloxane-containing (meth) acrylate.
The method of claim 12,

The compound comprising the first monomer, a polymerization initiator and a functional group in the step (2) is a method for producing a cosmetic composition, characterized in that mixing in a weight ratio of 80 to 98: 0.2 to 1.0: 1 to 20.
The method of claim 12,

The second monomer and the polymerization initiator in the step (3) is a method for producing a cosmetic composition, characterized in that mixing at a weight ratio of 150 to 250: 1.
The method of claim 12,

In the step (4), the hydrophilic functional group is a method for producing a cosmetic composition, characterized in that the introduction into the silane coupling agent.