Emulsion cosmetic composition and preparation method thereof

Abstract

The present invention relates to an emulsified cosmetic composition, and more particularly, to an emulsified cosmetic composition and a method for preparing the same, the emulsified cosmetic composition comprising: an oil phase part comprising a cationic polymer and an oil gelling agent; and an aqueous phase part comprising an anionic polymer. The present invention enables an emulsion cosmetic composition comprising a high content of oil to maintain the appearance, quality, and feeling of use in the initial stage of preparation, even when circulated at a low temperature, by improving the stability at the low temperature, until the final consumer touches the emulsion cosmetic composition.

Description

TECHNICAL FIELD

[0001] The present application relates to an emulsified cosmetic composition including an oil phase, an aqueous phase, an ionic polymer, and a coagulating agent to have excellent stability at low temperature, and a preparation method thereof. BACKGROUND

[0002] The emulsified cosmetic composition has an advantage in that it can have a moisturizing feeling of a skin care water / toner due to low viscosity, and can impart a shielding effect from a functional maintenance aspect and a skin moisturizing feeling due to a high amount of oil. Such an emulsified cosmetic composition includes a high content of oil, and thus is prepared in a manner of passing through a high-pressure emulsification process by formulating a large amount of a surfactant or in a manner of having an emulsified bilayer phase form by including a large amount of a lecithin or polyglycerin-based surfactant.

[0003] The emulsified cosmetic composition has an advantage in that it can have a moisturizing feeling of a skin care water / toner due to low viscosity, and can impart a shielding effect from a functional maintenance aspect and a skin moisturizing feeling due to a high amount of oil. Such an emulsified cosmetic composition includes a high content of oil, and thus is prepared in a manner of passing through a high-pressure emulsification process by formulating a large amount of a surfactant or in a manner of having an emulsified bilayer phase form by including a large amount of a lecithin or polyglycerin-based surfactant.

[0004] The emulsified cosmetic composition has an advantage in that it can have a moisturizing feeling of a skin care water / toner due to low viscosity, and can impart a shielding effect from a functional maintenance aspect and a skin moisturizing feeling due to a high amount of oil. Such an emulsified cosmetic composition includes a high content of oil, and thus is prepared in a manner of passing through a high-pressure emulsification process by formulating a large amount of a surfactant or in a manner of having an emulsified bilayer phase form by including a large amount of a lecithin or polyglycerin-based surfactant.

[0005] In order to overcome the limitations of the prior art as described above, the present inventors have found that, if an ionic polymer capable of forming a coacervate and a coagulating agent are mixed to form a thin film of the oil phase portion on the upper portion of the aqueous phase portion, the emulsified particles can be maintained while the low-temperature stability is also improved, thereby completing the present application.

[0006] Patent Document 1: Korean Patent Laid-Open Publication No. 10-2023-0144317 (2023.10.16), Bilayer Phase Fine Mist Cosmetic Composition Including a Polyglycerin-Based Surfactant. SUMMARY

[0007] An object of the present application is to provide an emulsified cosmetic composition including a high content of oil, which is excellent in stability at low temperature by mixing an ionic polymer capable of forming a coacervate and a coagulating agent.

[0008] Still another object of the present application is to provide a preparation method of an emulsified cosmetic composition, which is excellent in stability at low temperature by stirring an oil phase portion including a cationic polymer and a coagulating agent and an aqueous phase portion including an anionic polymer.

[0009] To achieve the object, the present application provides an emulsified cosmetic composition, comprising: an oil phase portion including a cationic polymer and a oil condensing agent; and a water phase portion including an anionic polymer.

[0010] In addition, the present application provides an emulsified cosmetic composition, characterized in that the oil phase portion is located in the upper portion of the water phase portion and exists in a particle shape.

[0011] In addition, the present application provides an emulsified cosmetic composition, wherein the cationic polymer includes a natural synthetic high molecule.

[0012] In addition, the present application provides an emulsified cosmetic composition, wherein the oil condensing agent includes an ester oil and a urethane copolymer.

[0013] In addition, the present application provides an emulsified cosmetic composition, wherein the urethane copolymer includes one or more selected from the group consisting of castor oil / IPDI copolymer, HDI / trimethylol lactone crosslinking polymer, polyurethane-79, and combinations thereof.

[0014] In addition, the present application provides an emulsified cosmetic composition, wherein the anionic polymer includes carbomer.

[0015] In addition, the present application provides an emulsified cosmetic composition, wherein the content of the oil phase portion is 5 to 10% by weight, relative to the total weight of the cosmetic composition.

[0016] In addition, the present application provides an emulsified cosmetic composition, wherein the content of the cationic polymer is more than 0% and 1% or less by weight, relative to the total weight of the cosmetic composition.

[0017] In addition, the present application provides an emulsified cosmetic composition, wherein the content of the oil condensing agent is more than 0% and 1% or less by weight, relative to the total weight of the cosmetic composition.

[0018] In addition, the present application provides an emulsified cosmetic composition, wherein the content of the anionic polymer is more than 0% and 0.5% or less by weight, relative to the total weight of the cosmetic composition.

[0019] In addition, the present application provides an emulsified cosmetic composition, wherein the oil phase portion further includes a wax or a fatty alcohol.

[0020] In addition, the present application provides an emulsified cosmetic composition, wherein the particle shape has a size of 10 to 20 μm.

[0021] In addition, the present application provides an emulsified cosmetic composition, wherein the composition does not include a surfactant.

[0022] To achieve the object, the present application provides a method for preparing an emulsified cosmetic composition, comprising: (1) a step of preparing an oil phase part including a cationic polymer and a oil coagulating agent; (2) a step of preparing an aqueous phase part including an anionic polymer; and (3) a step of stirring the oil phase part and the aqueous phase part.

[0023] In addition, the present application provides a method for preparing an emulsified cosmetic composition, the oil coagulating agent including an ester oil and a urethane copolymer.

[0024] According to the present application, the stability at low temperature is improved by mixing an ion polymer capable of forming a coacervate and an oil coagulating agent in a cosmetic composition including a high content of oil, so that the emulsified cosmetic composition including a high content of oil can maintain the appearance, quality and use feeling at the initial stage of preparation as they are until the final consumer contacts even at low temperature. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1a is a schematic diagram of a two-layer phase cosmetic composition showing the coalescence of the oil phase part different from the present application, the oil phase part and the aqueous phase part are layered, Figure 1b is a schematic diagram of an emulsified cosmetic composition showing that the oil phase part according to the present application is located at the upper part of the aqueous phase part and maintains the emulsified particles.

[0026] Figure 2 is an optical microscope (manufacturing company: Nikon Instruments Korea Co., Ltd., model name: Microscope 80i) image (x200) showing the particle size of the emulsified cosmetic composition according to Example 1.

[0027] Figure 3 is an optical microscope (manufacturing company: Nikon Instruments Korea Co., Ltd., model name: Microscope 80i) image (x200) showing the particle size of the emulsified cosmetic composition according to Comparative Example 2.

[0028] Figure 4 is a photograph taken of the state of Example 1 after being stored for four weeks under CYC (-15℃ to 45℃) temperature conditions.

[0029] Figure 5 The left side of is a photograph taken of the state of Comparative Example 1 after being stored for one week under CYC (-15℃ to 45℃) temperature conditions, Figure 5 The right side of is a photograph taken of the initial state of preparation of Comparative Example 1. DETAILED DESCRIPTION

[0030] Hereinafter, in order to enable a person having ordinary knowledge in the technical field to which the present application pertains to easily practice the present application, preferred embodiments of the present application will be described in detail.

[0031] All technical terms used in the present application are used as the same meaning as that commonly understood by a person having ordinary knowledge in the relevant field of the present application, unless otherwise defined. In addition, in the present application, cases similar or equivalent to cases where a method or a sample is described as preferred are also included in the scope of the present application.

[0032] Hereinafter, the constitution of the emulsified cosmetic composition of the present application will be observed in more detail.

[0033] Emulsified cosmetic composition

[0034] The emulsified cosmetic composition according to the present application can include an oil phase portion and a water phase portion, and the oil phase portion can form a film to maintain emulsified particles above the water phase portion.

[0035] The content of the oil phase portion can be 5 to 10% by weight, and can be included in an amount of 6% by weight or more, 7% by weight or more, or 8% by weight or more, with respect to the total weight of the cosmetic composition.

[0036] It can be included in an amount of 9% by weight or less, 8% by weight or less, or 7% by weight or less.

[0037] In addition, it can be included in a range constituted by any one of the lower limit values and any one of the upper limit values described above.

[0038] When the content of the oil phase portion is greater than 10% by weight, the use feeling or stability can be reduced due to excessive use of oil, and when it is less than 5% by weight, the amount of oil incorporated is low and it can be impossible to sufficiently secure the functionality of the cosmetic, and it can be impossible to sufficiently impart a skin moisturizing feeling.

[0039] The oil phase portion and the water phase portion of the emulsified cosmetic composition according to the present application can include substances having opposite potentials to each other. Thereby, the oil phase portion and the water phase portion can exhibit opposite potentials, and due to the opposite potentials, an agglomerated layer can be formed between the oil phase portion and the water phase portion due to the interaction between the electric charges. Thereby, the oil phase portion forms a film above the water phase portion, and the oil phase portion exists in the form of particles, and thereby a dosage form of the emulsified cosmetic composition having excellent stability at low temperatures can be realized.

[0040] In the present application, the "agglomerated layer" can mean that the cationic polymer and the anionic polymer are temporarily electrostatically combined.

[0041] The oil phase part of the emulsified cosmetic composition according to the present application can include a cationic polymer. The cationic polymer is a polymer having a positive electric property, and can be included without limitation as long as it can form a temporary coacervate with an anionic polymer.

[0042] The cationic polymer can include a natural synthetic polymer, and specifically, can include one or more selected from the group consisting of Chitosan, Cationic Cellulose, Cationic Guar, Cationic Polysaccharide, Silicone-based polymers containing amino groups, Polyquaternium, and combinations thereof, and preferably, can include Silicone-based polymers containing amino groups, but is not limited thereto.

[0043] The Silicone-based polymers containing amino groups can include one or more selected from the group consisting of Bis-Amodimethicone, Amodimethicone, Aminopropyl Dimethicone, Aminoethylaminopropyl Dimethicone, Amino Bispropyl Dimethicone, Amodimethicone Hydroxystearate, and combinations thereof, and preferably, can include Aminopropyl Dimethicone, but is not limited thereto.

[0044] The content of the cationic polymer can be greater than 0 wt% and 1 wt% or less, based on the total weight of the cosmetic composition, and can be included in an amount greater than 0.1 wt%, greater than 0.2 wt%, greater than 0.3 wt%, greater than 0.4 wt%, or greater than 0.5 wt%.

[0045] The content of the cationic polymer can be 0.9 wt% or less, 0.8 wt% or less, 0.7 wt% or less, 0.6 wt% or less, or 0.5 wt% or less, based on the total weight of the cosmetic composition.

[0046] In addition, the content of the cationic polymer can be included in a range consisting of any lower limit value and any upper limit value described above.

[0047] When the content of the cationic polymer is greater than 1% by weight, there is a problem that coalescence between the cationic polymers occurs, and the appearance and quality of the contents are deteriorated, and when it is 0% by weight or less, the anionic polymer and the coacervate layer can not be sufficiently formed, and the stabilization of the contents can not be maintained.

[0048] The oil phase part of the emulsified cosmetic composition according to the present application can include a oil gelling agent. The oil gelling agent can prevent coalescence of emulsified particles at low temperatures to improve the stability of the contents while maintaining the appearance and quality at the initial stage of preparation.

[0049] The oil gelling agent can include an ester oil and a urethane-based copolymer. Specifically, it can include one or more selected from the group consisting of castor oil / IPDI copolymer and caprylic / capric triglyceride (Caprylic / Capric Triglyceride, Hydrogenated Poly(C6-20 Olefin), and HDI / Trimethylol Hexyllactone Crosspolymer) marketed by Polymer Expert under the name Estogel M, caprylic / capric triglyceride marketed by Lubrizol Corporation under the name Oilkemia 5S CC polymer, hydrogenated poly(C6-20 olefin), and HDI / trimethylol hexyllactone crosspolymer (Caprylic / Capric Triglyceride, Hydrogenated Poly(C6-20 Olefin), and HDI / Trimethylol Hexyllactone Crosspolymer), caprylic / capric triglyceride and polyurethane-79 (Caprylic / Capric Triglyceride and Polyurethane-79) marketed by TKB Trading, LLC under the name Crystal Clear Wax, and combinations thereof, but is not limited thereto.

[0050] The ester oil can include caprylic / capric triglyceride, but is not limited thereto.

[0051] The urethane-based copolymer can include one or more selected from the group consisting of castor oil / IPDI copolymer, HDI / trimethylol hexyllactone crosspolymer, polyurethane-79, and combinations thereof, but is not limited thereto.

[0052] The content of the oil gelling agent can be greater than 0% by weight and 1% by weight or less, can be included in an amount greater than 0.1% by weight, greater than 0.2% by weight, greater than 0.3% by weight, greater than 0.4% by weight, or greater than 0.5% by weight, with respect to the total weight of the cosmetic composition.

[0053] may be included in an amount of 0.9% by weight or less, 0.8% by weight or less, 0.7% by weight or less, 0.6% by weight or less, or 0.5% by weight or less.

[0054] In addition, it can be included in a range consisting of any lower limit value and any upper limit value described above.

[0055] When the content of the oil coagulating agent is greater than 1% by weight, there is a disadvantage in that the hardness is high and emulsified particles cannot be dispersed, and when it is 0% by weight or less, it can not help the coagulation layer of the ionic polymer and can not maintain the stabilization of the content.

[0056] The particle size of the oil phase part of the emulsified cosmetic composition according to the present application can be 10 μm to 20 μm, can be 11 μm or more, 12 μm or more, 13 μm or more, 14 μm or more, or 15 μm or more;

[0057] may be 19 μm or less, 18 μm or less, 17 μm or less, 16 μm or less, or 15 μm or less.

[0058] In addition, it can be included in a range consisting of any lower limit value and any upper limit value described above.

[0059] When the particle size of the emulsified cosmetic composition is greater than 20 μm, emulsified particles can not be sufficiently formed, and when it is less than 10 μm, it can cause a phenomenon in which coalescence of emulsified particles occurs at low temperatures, thereby affecting the stability of the product.

[0060] The oil phase part of the emulsified cosmetic composition according to the present application can further include a wax or a fatty alcohol.

[0061] The wax can be a wax generally used in a cosmetic composition, and specifically, can include one or more selected from the group consisting of Ceresin Wax, Polyethylene Wax, Microcrystalline Wax, Paraffin Wax, Ozokerite, Carnauba Wax, Candelilla Wax, and combinations thereof, but is not limited thereto.

[0062] The fatty alcohol can be a fatty alcohol generally used in a cosmetic composition, and can be a solid at room temperature. Specifically, it can include one or more selected from the group consisting of Myristyl Alcohol, Cetyl Alcohol, Stearyl Alcohol, and combinations thereof, but is not limited thereto.

[0063] The water phase portion of the emulsified cosmetic composition according to the present application can include an anionic polymer. The anionic polymer is a polymer having a negative property, and can be included without limitation as long as it can form a temporary coacervate with the cationic polymer.

[0064] The anionic polymer can include a carbomer, but is not limited thereto.

[0065] The content of the anionic polymer can be greater than 0 wt% and 0.5 wt% or less, based on the total weight of the cosmetic composition, and can be included in an amount of greater than 0.01 wt%, greater than 0.03 wt%, greater than 0.05 wt%, greater than 0.07 wt%, greater than 0.09 wt%, greater than 0.1 wt%, greater than 0.2 wt%, or greater than 0.3 wt%;

[0066] may be included in an amount of 0.49 wt% or less, 0.47 wt% or less, 0.45 wt% or less, 0.43 wt% or less, 0.41 wt% or less, 0.4 wt% or less, 0.3 wt% or less, or 0.2 wt% or less.

[0067] In addition, it can be included in a range consisting of any lower limit value and any upper limit value described above.

[0068] When the content of the anionic polymer is greater than 0.5 wt%, there are problems in terms of preparation efficiency, appearance, and quality of the contents, and when it is 0 wt% or less, the cationic polymer and the coacervate can not be sufficiently formed, and the stabilization of the contents can not be maintained.

[0069] The water phase part can further include a polyol or the like. The polyol can be a polyol generally used in a cosmetic composition, and specifically, can include one or more selected from the group consisting of sorbitol, polyethylene glycol (PEG), polypropylene glycol (PPG), dipropylene glycol, propylene glycol, 1,3-butylene glycol, glycerin, propanediol, ethylhexanediol, 1,2-hexanediol, PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin, ethylhexylglycerin, pentylene glycol, and combinations thereof, but is not limited thereto.

[0070] The emulsified cosmetic composition according to the present application can maintain the stability of the dosage form even without including a surfactant. In the past, in order to stabilize the dosage form, a surfactant has been used as an essential component in an emulsified cosmetic composition including a high content of oil. However, the surfactant sometimes becomes a cause of sticky use feeling of the cosmetic composition or causes skin irritation. According to the present application, by mixing an ionic polymer capable of forming a coacervate and an oil coagulating agent, the dosage form can be stabilized even without using a surfactant.

[0071] In the emulsified cosmetic composition according to the present application, one or more selected from the group consisting of all kinds of ingredients that can be used in general cosmetics, whitening effect ingredients, anti-wrinkle ingredients, fragrances, preservatives, antioxidants, anti-discoloration agents, and combinations thereof can be further included, within a range not interfering with the object of the present application.

[0072] Method for preparing an emulsified cosmetic composition

[0073] The method of preparing the emulsified cosmetic composition according to the present application can include: (1) a step of preparing an oil phase part including a cationic polymer and an oil coagulating agent; (2) a step of preparing a water phase part including an anionic polymer; and (3) a step of stirring the oil phase part and the water phase part.

[0074] The specific description of the cationic polymer, the oil coagulating agent, and the anionic polymer according to the method of preparing the emulsified cosmetic composition is the same as the above, and thus the specific description will be omitted below.

[0075] The method of preparing the emulsified cosmetic composition can include (1) a step of preparing an oil phase part including the cationic polymer and the oil condensing agent.

[0076] The step of preparing the oil phase part can be prepared by a method of preparing an oil phase part using a method of completely dissolving the constituent ingredients by using a paddle stirrer at 80 to 110°C, etc. The oil phase part includes the oil condensing agent, and thus must be accompanied by a dissolving process.

[0077] The method of preparing the emulsified cosmetic composition can include (2) a step of preparing a water phase part including the anionic polymer.

[0078] The step of preparing the water phase part can be prepared by a method of preparing a water phase part using a high-speed stirrer at a high temperature (about 75°C), etc. The water phase part needs to disperse the tackifier and is suitable for a high-temperature emulsification process, and thus needs a warming condition.

[0079] The method of preparing the emulsified cosmetic composition can include (3) a step of stirring the oil phase part and the water phase part.

[0080] The step of stirring the oil phase part and the water phase part can use a general stirring method of the oil phase part and the water phase part, such as stirring while slowly adding the oil phase part to the water phase part.

[0081] Hereinafter, the contents of the present application will be more specifically explained through examples and test examples. The following examples and test examples are only exemplarily suggested in order to more specifically explain the present application, and the scope of the present application should not be interpreted to be limited by these examples and test examples, which are obvious to those having ordinary knowledge in the technical field to which the present application pertains.

[0082] [Examples 1 to 3 and Comparative Examples 1 to 5]

[0083] The emulsified cosmetic compositions of Examples 1 to 3 and Comparative Examples 1 to 5 were prepared according to the compositions described in Tables 1 and 2 below.

[0084] Specifically, the oil phase part was prepared by sufficiently warming and completely dissolving the constituent ingredients included in the oil phase part in the composition ratio shown in Tables 1 and 2 using a paddle stirrer (manufacturing company: Global Lab, model name: SS-20) at 110°C in a reactor. In addition, after warming the constituent ingredients included in the water phase part in the composition ratio shown in Tables 1 and 2 to 75°C, the water phase part was prepared by stirring for 3 minutes at 9000 rpm using a high-speed stirrer (manufacturing company: Primix, model name: Mark2 2.5).

[0085] An emulsified cosmetic composition was prepared by slowly adding the prepared oil phase part to the prepared water phase part while stirring at a low speed of 3000 rpm for 3 minutes.

[0086] In the case of Comparative Example 2, the prepared oil phase part was added to the prepared water phase part while also adding Hydrogenated lecithin as a surfactant together.

[0087] For stability evaluation, oil-soluble pigments (types: Malachite extract, Lithospermum erythrorhizon root extract) were added in a trace amount in Examples 1 to 3 and Comparative Examples 1 to 5.

[0088] [Table 1]

[0089] (Unit: wt%)

[0090]

[0091] [Table 2]

[0092] (Unit: wt%)

[0093]

[0094]

[0095] *Oilkemia 5S CC Polymer: Caprylic / Capric Triglyceride, Hydrogenated Poly(C6-20 Olefin), and HDI / Trimethylol Hexyllactone Crosspolymer

[0096] *Crystal Clear Wax: Caprylic / Capric Triglyceride and Polyurethane-79

[0097] *EstoGel M: Castor Oil / IPDI Copolymer and Caprylic / Capric Triglyceride

[0098] * Oleogy LEOT: Octyldodecanol, Dibutyl Ethylhexanoyl Glutamide, and Dibutyl Lauroyl Glutamide

[0099] * HDXP: Dextrin Palmitate

[0100] * Carbopol 981: Carbomer

[0101] * SEPINOV WEO: Hydroxyethyl Acrylate / Sodium Acryloyldimethyl Taurate Copolymer

[0102] [Experimental Example 1] Evaluation of pH

[0103] The pH of the emulsified cosmetic compositions of Examples 1 to 3 and Comparative Examples 1 to 5 was measured, and the results are summarized in Table 3.

[0104] [Table 3]

[0105] Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 pH 5.1 5.3 5.0 5.2 5.6 5.1 5.2 6.0

[0106] The pH of the emulsified cosmetic compositions of Examples 1 to 3 and Comparative Examples 1 to 5 was measured, and the results are summarized in Table 3.

[0107] [Experimental Example 2] Evaluation of Particle Size

[0108] The particle size of the emulsified cosmetic compositions according to Example 1 and Comparative Examples 1 and 2 was measured using an optical microscope (manufacturing company: Nikon Instruments Korea Co., Ltd., model name: Microscope 80i, magnification: x200), and the results are shown in FIGS. 1 and 2. Figure 2 and Figure 3

[0109] The particle size of Example 1 and Comparative Example 1 was measured at a level of 10 to 20 μm, and the particle size of Comparative Example 2 was measured at a level of 1 to 10 μm. It was confirmed that Comparative Example 2, which included a surfactant but did not include a cationic polymer, an anionic polymer, and a oil gelling agent, had a small particle size.

[0110] [Experimental Example 3] Evaluation of Appearance and Stability of Emulsified Cosmetic Composition

[0111] ​In order to confirm the appearance of the emulsified cosmetic composition, the emulsified cosmetic compositions according to Examples 1 to 3 and Comparative Examples 1 to 5 were put in transparent plastic containers, and the appearance was observed, which is shown in Table 4.

[0112] In order to confirm the stability of the emulsified cosmetic composition, the emulsified cosmetic compositions according to Examples 1 to 3 and Comparative Examples 1 to 5 were put in transparent plastic containers, and stored for four weeks under CYC (-15°C to 45°C) temperature conditions, and the degree of separation over time was observed, which is shown in Table 4. Then, a photograph showing the state after four weeks of Example 1 is shown in the left side of Figure 4 A photograph showing the state after one week of Comparative Example 1 is shown in the right side of Figure 5

[0113]

Table 4

[0114] Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Appearance Emulsified double phase Emulsified double phase Emulsified double phase Emulsified double phase Emulsified double phase Emulsified single phase Emulsified single phase Emulsified double phase Stability Good Good Good Separation Separation Separation Separation Separation

[0115] With respect to the appearance, when Examples 1 to 3 including a cationic polymer in the oil phase part, a coagulating agent including an ester oil and a urethane copolymer, and a carbomer in the water phase part were used, emulsified double-layer phases were shown, and when Comparative Examples were used, Comparative Example 3 and Comparative Example 4, which are not the coagulating agent, showed emulsified single phases, and Comparative Example 1 and Comparative Example 2, which do not use the coagulating agent, and Comparative Example 5, which uses the coagulating agent, showed emulsified double-layer phases.

[0116] With respect to the stability, only Examples 1 to 3 including the components were good in stability, and Comparative Examples 1 to 5, which do not include all of the components, were separated. For example, even at the time point after 4 weeks, Example 1, which includes a cationic polymer, an anionic polymer, and a coagulating agent at the same time, was not separated at all temperature conditions (CYC, -15°C, 30°C, 37°C, 45°C), and there was no change in color, and it was confirmed that even at low temperatures, the emulsified cosmetic composition according to the present application can stably maintain the initial appearance and quality.

[0117] However, in the case of Comparative Example 1 including a cationic polymer and an anionic polymer but not including a coagulating agent, it was confirmed that there was no separation at the initial stage, but separation occurred at the same time as the low temperature state, and at the time point after one week, it can not be possible to maintain the initial appearance and quality. It was confirmed that Comparative Example 2, which includes a surfactant but does not include a cationic polymer, an anionic polymer, and a coagulating agent, also separates at low temperatures and can not be able to maintain the initial appearance and quality.​

Claims

1. An emulsified cosmetic composition, comprising: The oil phase includes cationic polymers and oil-gelling agents; as well as The aqueous phase includes anionic polymers.

2. The emulsified cosmetic composition according to claim 1, wherein, The oil phase is located above the water phase and exists in the form of particles.

3. The emulsified cosmetic composition according to claim 1, wherein, The cationic polymers include natural and synthetic polymers.

4. The emulsified cosmetic composition according to claim 1, wherein, The oil-gelling agent includes ester oils and urethane copolymers.

5. The emulsified cosmetic composition according to claim 4, wherein, The urethane copolymers include one or more selected from the group consisting of castor oil / IPDI copolymers, HDI / trimethylolcaprolactone crosspolymers, polyurethane-79, and combinations thereof.

6. The emulsified cosmetic composition according to claim 1, wherein, The anionic polymer includes carbomer.

7. The emulsified cosmetic composition according to claim 1, wherein, The oil phase content is 5% to 10% by weight relative to the total weight of the cosmetic composition.

8. The emulsified cosmetic composition according to claim 1, wherein, The content of the cationic polymer is greater than 0% by weight and less than 1% by weight relative to the total weight of the cosmetic composition.

9. The emulsified cosmetic composition according to claim 1, wherein, The content of the gelling agent is greater than 0% by weight and less than 1% by weight relative to the total weight of the cosmetic composition.

10. The emulsified cosmetic composition according to claim 1, wherein, The content of the anionic polymer relative to the total weight of the cosmetic composition is greater than 0% by weight and less than 0.5% by weight.

11. The emulsified cosmetic composition according to claim 1, wherein, The oil phase also includes waxes or fatty alcohols.

12. The emulsified cosmetic composition according to claim 2, wherein, The particle size is 10 μm to 20 μm.

13. The emulsified cosmetic composition according to claim 1, wherein, The composition does not contain surfactants.

14. A method for preparing an emulsified cosmetic composition, wherein the emulsified cosmetic composition is the emulsified cosmetic composition according to claim 1, and the method for preparing the emulsified cosmetic composition comprises: (1) The step of preparing an oil phase comprising a cationic polymer and a curing agent; (2) The step of preparing an aqueous phase comprising an anionic polymer; as well as (3) The step of stirring the oil phase and the water phase.

15. The method for preparing the emulsified cosmetic composition according to claim 14, wherein, The oil-gelling agent includes ester oils and urethane copolymers.

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