KR102044908B1 - High natural oil content nano emulsion composition improved clarity, and cosmetic composition comprising the same, and method for preparing same - Google Patents

Abstract

The present invention relates to a nano-emulsion composition containing a high content of natural oil with improved transparency, a cosmetic composition comprising the same and a method for preparing the same, more specifically emulsified natural oil, surfactant, and polyol with a high pressure emulsifier in an appropriate blending ratio It relates to a nano-emulsion composition, a cosmetic composition and a method for producing the same containing a high content of natural oil to be prepared. Nanoemulsions containing high content natural oils with improved transparency of the present invention can contain nano oils up to 25% by weight in high viscosity skin and essence formulations by preparing nano-size emulsion particles of 20 to 50 nm. In addition, it prevents oil separation and improves stability when applied to cosmetics. In addition, since the transparency is improved, it is possible to widely apply natural oil, which has been conventionally applied to cosmetics of the latex type, to a transparent skin type or cream type.

Description

Nano emulsion composition containing high content natural oil with improved transparency, cosmetic composition comprising the same and manufacturing method thereof TECHNICAL FIELD

The present invention relates to a nano-emulsion composition containing a high content of natural oil with improved transparency, a cosmetic composition comprising the same and a method for preparing the same, and more particularly, by high-pressure emulsifying a natural oil, a surfactant, a polyol at an appropriate blending ratio It relates to a high content natural oil nano-emulsion composition to be prepared, and a cosmetic composition comprising the same and a method for producing the same.

An emulsion refers to a liquid-liquid dispersion system in which two or more liquid phases are dispersed in one liquid phase, and generally have a size distribution of several nm to several tens of micrometers.

Among them, microemulsions having a size distribution of several micrometers to several tens of micrometers are thermodynamically unstable, such as flocculation, sedimentation, creaming, ostwald ripening, and coalescence. It is intended to be separated into various paths.

In this case, when the size of the emulsion particles in the dispersed phase is reduced to nano size, the stability of the emulsion in the kinetic aspect can be greatly improved by the Brownian motion between the particles, and a low viscosity emulsion having a high inner phase content can be prepared. Not only can make cosmetics with a variety of feeling, there is an advantage that the effective particle can be effectively delivered to the skin small particle size.

In general, a liquid-liquid dispersion system in which the average diameter of the dispersed phase particles is 20-500 nm, although slightly different according to the literature, is called a nanoemulsion.

Nanotechnology is a very potential technology in the cosmetics market and is widely used in the industry. In the field of cosmetic manufacturing, nanotechnology is applied to improve the effective substance delivery performance by controlling the size of the structure that serves to deliver the active ingredient in the skin smaller than the size between the cells constituting the skin. In addition, by forming the structure in the form of a multi-layered liquid crystal film similar to the skin lipid structure, it is possible to more stabilize the efficacy components weak to the external environment such as air, moisture, light, temperature, and also improve the skin delivery effect.

The skin of the human body plays a variety of roles such as protecting the body from external physical, chemical or biological stimuli, and suppressing evaporation of moisture from inside the skin to maintain the homeostasis of the human body. The skin also protects the body from harmful ultraviolet rays from the sun and plays a role in regulating body temperature. The skin is a sensory organ with a variety of functions that can communicate with the external environment and prevent invading pathogens. Furthermore, the condition and appearance of the skin play an important role as an indicator that can easily recognize the state of health. As such, skin is indispensable for living as a part of the body that is directly affected by physical, chemical or biological injuries from various external factors, as well as having the ability to heal their functional and structural damage. In general, however, dry skin tends to increase due to skin aging, cumulative sustained stress, or contaminated environments. As a cause of such skin drying, cationic substances such as yellow dust, dust, and pollution adhere to the skin, causing various skin irritation and allergies, or inhibiting the function of restoring the normal skin barrier to accelerate the drying of the skin. To prevent and alleviate this, it is important to keep the skin moisturized by applying moisturizers sufficiently.

 Oils, hyaluronic acid, sugars, polyols, etc. are generally used as a method of increasing the skin's moisturizing power. Oils include mineral-derived, synthetic-derived, natural oils, silicone oils, etc., and are excellent for imparting a moisturizing effect, but have disadvantages that should be used only for creams and lotions with high viscosity. Hyaluronic acid and sugars can be easily applied to skin and low-viscosity formulations as they are water-dispersible ingredients. However, they are expensive and have a unique texture that makes them difficult to use. While there is an advantage that can be applied to low viscosity formulations, there is a disadvantage in that there is an excessive amount of stickiness. Ceramide, which prevents the loss of moisture in skin tissues for people with dry skin and acts as a barrier against foreign substances on the skin surface, is easy to crystallize in cosmetic formulations due to its structural specificity, and thus, when contained in a high content of the formulation, the layer is separated. Or precipitation occurs.

In general, many skin-related products contain substances that can cause irritation or inflammation, and more than 10% of people who use personal care cosmetics complain of side effects on the skin. Due to the tendency to focus on functional cosmetics that can give the skin side effects due to the use of personal care products such as cosmetics is expected to increase gradually.

In addition, the skin of modern people is exposed to various harmful environments and stresses outside, and suffers various damages. As the skin ages, the physiological activity of the skin decreases and the recovery rate of the damaged skin slows down, the elasticity decreases, the dryness, the wrinkle formation, the dullness, etc. Will meet various skin aging phenomena. Therefore, the main goal of the cosmetics to improve the aging symptoms, various cosmetics for this is being developed. Recently, the trend of using ingredients derived from nature in cosmetics is increasing rapidly.

In order to improve the stimulation of these functional products, or to inhibit skin aging and strengthen skin moisturizing properties, natural extract ingredients such as centella extract, portulaca extract, chamomile flower extract, burdock root extract, situation mushroom extract, grapefruit blood extract, green tea extract, etc. And synthetic ingredients such as allantoin, bisabolol, and polyol are mainly used.

Most natural ingredients are generally vulnerable to air, temperature changes, moisture, and light, which tends to cause odor, discoloration, and acidification, which can cause problems such as changes in formulation, color, and odor when making cosmetics. there was. In order to prevent this, a technology has been developed to protect natural ingredients from deterioration by external environment by using nano technology to make nanonized emulsion.

However, these nanonized emulsions generally have an opaque property, and the suspension degree varies with each preparation, so that the turbidity change occurs when added to the formulation.

Korean Patent Publication No. 10-2017-0038249 (published: 2017.04.07)

It is an object of the present invention to minimize the turbidity change when added to the formulation, even if it contains a high amount of natural oil, and can improve the transparency to easily determine the spec (spec) of the composition by visually confirming the transparency in the preparation of the composition It is to provide a nano-emulsion composition containing a high content natural oil.

In addition, another object of the present invention is to contain a natural oil component having a high affinity with the skin is excessively applied to sensitive skin without stimulation to improve the moisturizing power, color, shape by air, temperature change, light, moisture, etc. By encapsulating and stabilizing natural oil components that occurred over time, such as changes and odors, nano-sized emulsions provide cosmetics in the form of nano-sized nano-emulsions that are smaller than the skin gap that can be more reliably delivered from the skin to the desired site.

Another object of the present invention is to provide a nano-emulsion composition with improved transparency containing a high amount of natural oil and an effective method for producing a cosmetic composition comprising the same.

Nanoemulsion composition according to a preferred embodiment of the present invention, 0.1 to 2.0% by weight of the soybean-derived natural phospholipid, 10 to 20% by weight glycerin and 0.2 to 0.5% by weight sodium stearoyl glutamate relative to the total weight of the total nanoemulsion composition And an aqueous phase including 5 to 25% by weight of natural oil, 5 to 12% by weight of silicone oil, 0.1 to 2.0% by weight of fatty acid, and 1.0 to 6.0% by weight of ionic surfactant, based on the total weight of the total nanoemulsion composition. Can be.

Soy-derived natural phospholipids include hydrogenated lecithin, and natural oils include apricot seed oil, macadamia nut oil, almond oil, limnandes alba seed oil, jojoba oil, caprylic / capric triglycerides and one or more of these. The silicone oil comprises cyclopentasiloxane, and the fatty acid is 0.2-1.0 wt% of cetostearyl alcohol and 0.2-1.0 of steric acid based on the total weight of the total nanoemulsion composition. Wt%, the ionic surfactant comprises from 1.0 to 5.0 wt% of polyglyceryl-2 stearate, and PIG-8 stearate (PEG) based on the total weight of the total nanoemulsion composition. -8 Stearate) may be 0.5 to 2.5% by weight.

The water phase is the remainder of any solvent selected from the group consisting of purified water, centella asiatica extract, macho extract, chamomile flower extract, chaste tree extract, burdock root extract, situation mushroom extract and mixtures thereof. It may be to include more 50 to 70% by weight relative to.

The nano liquid crystal emulsion composition may include nano emulsified particles having an average particle size of 20 to 50 nm.

According to another preferred embodiment of the present invention, a step of preparing an aqueous phase comprising soybean-derived natural phospholipids, glycerin and sodium stearoylglutamate; Any one natural oil, silicone selected from the group consisting of apricot seed oil, macadamia nut oil, almond oil, limnandes alba seed oil, jojoba oil, caprylic / capric triglycerides and mixtures containing one or more thereof Preparing an oil phase portion comprising an oil, a fatty acid and an ionic surfactant; A first emulsifying step of preparing an emulsion of a bulky spherical body by introducing an aqueous phase and an oil phase and using a vacuum emulsion tank and a homomixer; And a second emulsifying step of preparing a bulky spherical emulsion into a nanoemulsion using a high pressure type microfluidizer.

The manufacturing step of the water phase part and the manufacturing step of the oil phase part each include a step of stirring at a temperature of 70 to 80 ℃, the first emulsification step includes a step of stirring at a speed of 1,000 to 3,000 rpm at a temperature of 70 to 80 ℃ The second emulsifying step may include performing one or more times at a pressure of 500 to 1500 bar and a temperature of 20 to 40 ° C.

The water phase part comprises 0.1 to 2.0% by weight of soybean-derived natural phospholipid, 10 to 20% by weight of glycerin, 0.2 to 0.5% by weight of sodium stearoylglutamate, and the balance of purified water, centella extract, Portulae extract, chamomile flower extract, chaste tree extract, burdock root extract, situation mushroom extract and any one solvent selected from the group consisting of a mixture thereof 50 to 70% by weight further, the oil phase portion of the whole nanoemulsion composition 5 to 25 weight percent natural oil, 5 to 12 weight percent cyclopentasiloxane with silicone oil, 0.2 to 1.0 weight percent cetostearyl alcohol and 0.2 to 1.0 weight percent steric acid as fatty acids, ionic surfactant Low polyglyceryl-2 stearate 1.0-5.0 wt% and Fiji-8 stearate 0.5-2.5 wt%.

According to another preferred embodiment of the present invention, it is possible to provide a cosmetic composition comprising a nano-emulsion composition, it may also provide a cosmetic comprising a cosmetic composition. The cosmetic may be any one selected from skin lotion, milk lotion, essence, ampoule, nourishing cream, eye cream, foundation, BB cream, CC cream, sun cream, lip cream, lipstick and cosmetic groups in which one or more thereof are combined.

Nanoemulsion composition containing a high content natural oil with improved transparency of the present invention and the cosmetic composition comprising the same by producing a nano-size emulsified particles of 20 to 50 nm by adding up to 25% by weight of natural oil in a low viscosity skin, essence formulation It can be contained in a high content to prevent oil separation or development can improve the stability when applied to cosmetics. In addition, since the transparency is improved, it is possible to widely apply natural oil, which has been conventionally applied to cosmetics of the latex type, to a transparent skin type or cream type.

1 is a particle size analysis result of measuring the size of the particles of the composition of Example 1 according to the present invention.
2 is a photograph showing the properties of Example 1, Comparative Example 1, Comparative Example 2 and Comparative Example 3.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include expressions of the abdomen unless the context clearly indicates otherwise. The terms 'comprise' or 'having' in the present invention are intended to indicate that there is a feature, number, step, operation, component, part, or a combination thereof described in the specification, and one or more other features or It should be understood that it does not exclude in advance the possibility of the presence or addition of numbers, steps, operations, components, parts or combinations thereof.

Nanoemulsion composition according to an embodiment of the present invention, the soybean-derived natural phospholipids (Phospholipid), polyols, a water phase including a first surfactant and natural oils, silicone oils, fatty acids and ionic surfactants (second surfactant It includes an oil portion including).

It will be described in more detail with respect to the water phase portion which is a part for forming a continuous phase to make the nanoemulsion composition of the present invention.

Soybean-derived natural phospholipids in the water phase may include emulsifier lecithin or hydrogenated lecithin, which are vegetable surfactants having amphiphilic properties.

Emulsifier lecithin, an amphiphilic vegetable surfactant derived from soybean, contains 60 to 70% of phospholipid and glycolipid, and its function and quality may depend on the content of phosphatidylcholine. In general, when the phosphatidylcholine content is less than 50% as an auxiliary emulsifier, more than that can be a raw material of liposomes. In the production of lecithin, a small amount of unsaturated fatty acids mixed together in soybeans may be hydrogenated to change to saturated fatty acid glycerides. This type of hydrogenation is mainly used in cosmetics.

Since lecithin uses a highly biocompatible plant-natural preparation, it is possible to effectively capture a non-toxic, good anti-oxidant and poorly compatible raw material using the property of forming a liposome membrane, thereby inactivating it. It can improve the preservation of easy materials.

Lecithin has a rectangular molecular structure on a plane where two lipophilic groups are attached to a hydrophilic part, and when dispersed in water, it forms a bimolecular film instead of a spherical micelle, and such closed vesicles are called vesicles. Among these vesicles, those formed with phosphate lipids are generally referred to as liposomes.

The difference between micelles and liposomes is that micelles are dissolved in water in the form of molecules when diluted, but liposomes are present as liposomes even when diluted. Liposomes generally have a size of 0.02 to 10 μm, and may be classified into multilamellar vesicles (MLV) and unilamellar vesicles (ULV) according to their size and shape.

The soybean-derived natural phospholipid may comprise 0.1 to 2.0 weight percent hydrogenated lecithin relative to the total weight of the total nanoemulsion composition. At this time, when the natural phospholipid content derived from soybean is less than 0.1% by weight, it is not easy to form nanoparticles, and when it exceeds 2.0% by weight, it is an expensive raw material, resulting in a burden on price, and red color over time. Changes occur.

The polyol may comprise any one selected from the group consisting of glycerin, 1,3-butylene glycol, propylene glycol, dipropylene glycol and mixtures of one or more thereof, more preferably, based on the total weight of the total nanoemulsion composition It may contain 10 to 20% by weight of glycerin. When glycerin is included in less than 10% by weight, the tendency to lower the moisturizing power may occur, and when it exceeds 20% by weight, stickiness peculiar to polyol may occur. The content of glycerin was specified in the content range in consideration of the usability based on the characteristics of the general polyol.

The first surfactant may comprise sodium stearoyl glutamate and may comprise 0.2 to 0.5 weight percent sodium stearoyl glutamate relative to the total weight of the total nanoemulsion composition. Containing less than 0.2% by weight of sodium stearoylglutamate lowers the transparency of the entire nanoemulsion composition, and above 0.5% by weight can cause skin irritation, which is one of the ionic surfactant characteristics.

The water phase is the remainder of any solvent selected from the group consisting of purified water, centella asiatica extract, macho extract, chamomile flower extract, chaste tree extract, burdock root extract, situation mushroom extract and mixtures thereof. It may be to include more 50 to 70% by weight relative to. When the solvent is contained outside the content range, the nanoemulsion may not be formed stably and easily.

I will explain the oil in detail more.

Natural oils include any one selected from the group consisting of apricot seed oil, macadamia nut oil, almond oil, limnandes alba seed oil, jojoba oil, caprylic / capric triglycerides and mixtures containing one or more thereof. It may be. The natural oil may comprise 5 to 25% by weight, more preferably 5.0 to 20% by weight, based on the total weight of the total nanoemulsion composition. If the content of the natural oil is less than 5.0% by weight, there is a problem that the stability of the emulsion is not good after emulsification is too small, and if more than 25% by weight, the suspension becomes high and the emulsion formulation is opaque. In an embodiment of the present invention, the most inexpensive apricot seed oil is applied in consideration of the cost, but it is determined that synergistic effect will be given even more when one or more natural oils are mixed.

Silicone oils include cyclopentasiloxane, cyclohexasiloxane, dimethicone, dimethicone copolymer, divinyldimethicone / dimethicone copolymer, diphenyldimethicone, methicone, phenyltriethicone, diisostearoyltriethylol Propanesiloxysilicate, cycloethicone, stearyldimethicone, phenyltriethicone, amodiethicone and any one selected from the group consisting of one or more thereof, more preferably the entire nanoemulsion composition It may comprise 5 to 12% by weight of cyclopentasiloxane relative to the weight. When the silicone oil is included in less than 5.0% by weight, the transparency of the formulation is opaque, and when it exceeds 12.0% by weight, the nanoemulsion particles are unstable and stability tends to occur over time.

The fatty acid may comprise 0.1 to 2.0% by weight, preferably 0.4 to 2.0% by weight relative to the total weight of the total nanoemulsion composition, more preferably 0.2 to 1.0% by weight of cetostearyl alcohol based on the total weight of the total nanoemulsion composition. %, Steric acid may comprise 0.2 to 1.0% by weight. In the case of containing less than 0.2% by weight of fatty acid cetostearyl alcohol and steric acid, the hardness is not easy to form, and when it contains more than 1.0% by weight, respectively, the hardness is too high and is not easy to use. More preferably, containing 0.2 to 0.7% by weight of cetostearyl alcohol and steric acid, respectively, is effective in controlling the hardness of the nanoemulsion composition.

The ionic surfactant (second surfactant) may comprise as much as 1.0 to 6.0% by weight relative to the total weight of the total nanoemulsion composition, preferably including 3.6 to 6.9% by weight, more preferably 4.0 to 5.9% by weight It may be. Even more preferably, the ionic surfactant is 1.0 to 5.0% by weight of polyglyceryl-2 stearate, and polyglycol-8 stearate (PEG) based on the total weight of the total nanoemulsion composition. 8 Stearate) may comprise 0.5 to 2.5% by weight.

Polyglyceryl-2 stearate, Fiji-8 stearate is a function of stably trapping the natural oil to form a stabilized lipid membrane. At this time, when the content of polyglyceryl-2 stearate is less than 1.0% by weight, there is a problem in that the emulsification is not possible. When the content of the polyglyceryl-2 stearate is greater than 5.0% by weight, the emulsion form is changed to obtain a nanosize emulsion. If it is less than 0.5% by weight of PIG-8 stearate, there is a problem in that emulsification is not performed, and when it is 2.5% by weight or more, transparency tends to be suspended.

The nano liquid crystal emulsion composition may include nano emulsified particles having an average particle size of 20 to 50 nm. If the average particle size is out of this range, it may be disadvantageous in terms of improving transparency and stabilizing the nanoemulsion composition.

The nanoemulsion composition of the present invention may further include a nutrient component selectively in addition to the aqueous phase and the oil phase. Generally, the nutritional component may further add any of the nutritional components used in the cosmetic component.

In the present invention, natural phospholipids extracted from soybeans are mild to sensitive skin without irritation, and due to temperature change, light, air, and the like, the change in color, viscosity, blood pH, etc. is severe and difficult to formulate a natural oil of nano size. Nanoemulsion cosmetics containing high-content natural oils that improve the transparency by minimizing the difference in suspension when added to the formulation by stably enclosing the phospholipid emulsion, helping to penetrate into the skin, and expressing its efficacy. It relates to a composition and a preparation method.

According to another preferred embodiment of the present invention, a step of preparing an aqueous phase comprising soybean-derived natural phospholipids, glycerin and sodium stearoylglutamate; Any one natural oil, silicone selected from the group consisting of apricot seed oil, macadamia nut oil, almond oil, limnandes alba seed oil, jojoba oil, caprylic / capric triglycerides and mixtures containing one or more thereof Preparing an oil phase portion comprising an oil, a fatty acid and an ionic surfactant; A first emulsifying step of preparing an emulsion of a bulky spherical body by introducing an aqueous phase and an oil phase and using a vacuum emulsion tank and a homomixer; And a second emulsifying step of preparing a bulky spherical emulsion into a nanoemulsion using a high pressure type microfluidizer.

The manufacturing step of the water phase part and the manufacturing step of the oil phase part each include a step of stirring at a temperature of 70 to 80 ℃, the first emulsification step includes a step of stirring at a speed of 1,000 to 3,000 rpm at a temperature of 70 to 80 ℃ The second emulsifying step may include performing one or more times at a pressure of 500 to 1500 bar and a temperature of 20 to 40 ° C.

The water phase part comprises 0.1 to 2.0% by weight of soybean-derived natural phospholipid, 10 to 20% by weight of glycerin, 0.2 to 0.5% by weight of sodium stearoylglutamate, and the balance of purified water, centella extract, Portulae extract, chamomile flower extract, chaste tree extract, burdock root extract, situation mushroom extract and any one solvent selected from the group consisting of a mixture thereof 50 to 70% by weight further, the oil phase portion of the whole nanoemulsion composition 5 to 25 weight percent natural oil, 5 to 12 weight percent cyclopentasiloxane with silicone oil, 0.2 to 1.0 weight percent cetostearyl alcohol and 0.2 to 1.0 weight percent steric acid as fatty acids, ionic surfactant Low polyglyceryl-2 stearate 1.0-5.0 wt% and Fiji-8 stearate 0.5-2.5 wt%.

The present invention, in the cosmetics comprising the oil phase portion, the water phase portion and the nutritional portion, phospholipid extracted from soybean and purified water and ionic surfactant is added to the oil phase containing the ionic surfactant and fatty acid oil to emulsify the emulsion first After the formation, it is characterized by the addition of alcohol and a preservative to the second emulsification, characterized in that the nano-emulsion cosmetic composition and a manufacturing method containing a high content natural oil improved transparency treated with a high-pressure emulsifier. Meanwhile, the nano-emulsion cosmetic composition and the manufacturing method containing the high content natural oil having improved transparency according to the present invention having the above components and contents will be described in more detail step by step.

First, in the process of making a bulky spherical emulsion, phospholipids extracted from soybean and glycerin and sodium stearoyl glutamate are dispersed in purified water and warmed to 70-75 ° C. to prepare a homogenized water phase. The oily phase comprising polyglyceryl-2 stearate, Fiji-8 stearate, cetostearyl alcohol, steric acid and cyclopentasiloxane is mixed and warmed to 70-75 ° C. to prepare a homogenized oil phase. Then, the water phase part and the oil phase part were put in a vacuum emulsion tank capable of temperature control and agitation, stirred at 2,000 to 2,500 rpm while maintaining 70 to 75 ° C., first emulsified, and cooled to 45 to 50 ° C. to form a bulky bulb. Make an emulsion of.

At this time, if the temperature during the first emulsification is low temperature, there is a problem that the surfactant and fatty acid components contained in the oil phase does not dissolve, so that emulsification does not occur. If the temperature is too high, the natural components of the water phase part and the oil phase part are destroyed by heat, There is a changing problem.

Thereafter, the mixture is introduced into a high-pressure emulsifier at 25 to 40 ° C., and then treated twice or three times at a pressure of 500 to 1500 bar to form a nanoemulsion composition containing a high content natural oil having improved transparency.

Secondary emulsification is a step of making a bulky emulsion having a large size formed into a nanosize. In this step, if the treatment temperature is less than 25 ° C., the emulsion cannot be uniformly encapsulated. If the temperature exceeds 40 ° C., the structure of the emulsion is deformed. There is a problem that can not form a nano-sized homogeneous emulsion.

In addition, if the treatment pressure is less than 500 bar, which is an important factor in preparing a nano-sized composition, the particles cannot be split into nano-sized particles. If the treatment pressure is greater than 1,500 bar, the temperature is rapidly increased due to the friction caused by too strong force. Damage to the particles, there is a problem that can not be made into a nano-size by uniting the particles.

Meanwhile, the high pressure type emulsifier used in the present invention applies a very high pressure in a pressure pump, and changes the high pressure to a high speed while passing it through an interaction chamber made of diamonds of a hollow fine size, such as a pipe, in the interaction chamber. It is a special device that can make nano-sized particles using a kind of vacuum phenomenon called cavitation with its unique structure, and the force to crush the particles is much stronger than that of the conventional mixer.

According to another preferred embodiment of the present invention, it is possible to provide a cosmetic composition comprising a nano-emulsion composition, it may also provide a cosmetic comprising a cosmetic composition. The cosmetic may be any one selected from skin lotion, milk lotion, essence, ampoule, nourishing cream, eye cream, foundation, BB cream, CC cream, sun cream, lip cream, lipstick and cosmetic groups in which one or more thereof are combined.

As described above, the cosmetic according to the present invention has a nano-size according to the above-described manufacturing method and has a structure very similar to that of skin cell membranes, which can reduce skin irritation due to chemical stress that occurs when using a conventional synthetic emulsifier in sensitive skin. In addition, the transparency can be improved to minimize the suspension difference generated when applying to cosmetics, and the transparency can be visually confirmed during the manufacturing of the composition, so it is easy to manage specs, and it is composed of a nano-sized emulsion, which penetrates into the skin. Very advantageous, it has a high lasting effect of the bioactive material.

Therefore, the nano-emulsion cosmetics containing high content natural oil with improved transparency according to the present invention can be applied to all cosmetic formulations such as essences, nourishing creams, sun creams, skin lotions, and milk lotions.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

Examples 1-2 and Comparative Examples 1-4 Nanoemulsion cosmetic composition and manufacturing method containing the high content natural oil which the transparency was improved

According to the composition shown in Table 1 below to prepare a cosmetic composition nano-sized emulsion composition, the preparation method is as follows. The aqueous phase was placed in a vacuum emulsion tank capable of temperature control and stirring and warmed to a temperature of 75 ° C. Separately, the oil phase was added to an oil phase melting tank capable of heating and stirring temperature and heated to 75 ° C. The prepared oil phase part was put into a vacuum emulsification tank containing an aqueous phase, and the mixture was stirred for 8 minutes at a speed of 2,500 rpm using a homomixer while maintaining the temperature at 75 ° C. to form a bulky liposome by forming a bulky liposome. It was cooled to 50 ° C. A bulky spherical liposome encapsulated with a bioactive substance was added to a high pressure type microfluidizer at 35 ° C. and treated three times at 1,000 bar pressure to emulsify it twice to obtain a high content natural oil having improved transparency. The containing nanoemulsion composition was prepared.

The particle size of the particles contained in the composition of Example 1 among these nanoemulsion compositions was analyzed and shown in FIG. 1, and the transparency (characteristics) of the nanoemulsion compositions of Examples 1, Comparative Examples 1, 2 and 3 were compared. 2 is shown in comparison.

division ingredient Content (% by weight) Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Award Purified water Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Hydrogenated lecithin 0.2 0.5 0.05 0.1 0.5 1.0 Sodium Stearoyl Glutamate 0.45 0.2 0.1 0.45 0.5 0.4 glycerin 13 20 15 13 10 10 The upper part Polyglyceryl-2 Stearate 4.8 3.5 2.0 0.5 6.0 4.5 Fiji-8 Stearate 1.0 2.0 1.0 3.0 3.0 2.5 Cetostearyl alcohol 0.5 0.25 0.5 0.5 0.5 0.5 Steric acid 0.5 0.75 0.5 0.5 0.5 0.5 Cyclopentasiloxane 10 7 10 10 7 2 Apricot Seed Oil 17 20 17 17 20 30 antiseptic 0.3 0.3 0.3 0.3 0.3 0.3 Constellation Transparency Transparency suspension suspension suspension suspension

As a result of confirming the properties of the nanoemulsion compositions of Examples 1 and 2, transparency was obtained. In particular, the nano-emulsion composition of Example 1 using a particle size analyzer (NANOPHOX of Sympatec, Germany) as shown in Figure 1 as a result of examining the distribution and size of the nanoparticles, the average particle size is 10 to 50nm, preferably Preferably it was confirmed that the nano-size is formed of 20 to 50 nm, more preferably 20 to 40 nm.

On the other hand, less than 0.2% by weight sodium stearoyl glutamate, less than 0.1% by weight phospholipid as in Comparative Example 1, or less than 1.0% by weight of polyglyceryl-2 stearate, Fiji- as in Comparative Example 2 More than 2.5% by weight of 8 stearate, or more than 5.0% by weight of polyglyceryl-2 stearate, 2.5% by weight of Fiji-8 stearate as in Comparative Example 3, or a natural oil as in Comparative Example 4. When the content exceeds 20% by weight, an emulsion is formed, but as can be seen in Figure 2, it was confirmed that it is not suitable for improving transparency, which is the main effect of the present invention.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims (10)

Regarding the nanoemulsion composition composed of an aqueous phase and an oil phase,
An aqueous phase including 0.1 to 2.0% by weight of soybean-derived natural phospholipid, 10 to 20% by weight of glycerin, and 0.2 to 0.5% by weight of sodium stearoylglutamate, based on the total weight of the total nanoemulsion composition; and
And an oil phase including 5 to 25 wt% of natural oil, 5 to 12 wt% of silicone oil, 0.1 to 2.0 wt% of fatty acid, and 1.0 to 6.0 wt% of ionic surfactant, based on the total weight of the total nanoemulsion composition.
The silicone oil comprises cyclopentasiloxane,
The nano-emulsion composition comprises a nano-emulsion particles having an average particle size of 20 to 50 nm. The method of claim 1,
The soybean-derived natural phospholipids include hydrogenated lecithin,
The natural oil is any one selected from the group consisting of apricot seed oil, macadamia nut oil, almond oil, limnandes alba seed oil, jojoba oil, caprylic / capric triglyceride and mixtures containing one or more thereof. Include,
The fatty acid includes 0.2 to 1.0 wt% of cetostearyl alcohol and 0.2 to 1.0 wt% of steric acid, based on the total weight of the total nanoemulsion composition,
The ionic surfactant is 1.0 to 5.0% by weight of polyglyceryl-2 stearate, and PG-8 stearate based on the total weight of the total ionic surfactant. ) 0.5 to 2.5% by weight of the nanoemulsion composition. The method of claim 1,
The water phase portion is a balance of purified water, centella asiatica extract, portulaca extract, chamomile flower extract, chaste tree extract, burdock root extract, situation mushroom extract and a mixture of any one solvent selected from the group consisting of the total nanoemulsion composition Nano emulsion composition further comprises 50 to 70% by weight based on the weight. delete About the manufacturing method of the nanoemulsion composition which consists of an aqueous phase part and an oil phase part,
A step of preparing an aqueous phase including soybean-derived natural phospholipid, glycerin and sodium stearoylglutamate;
Any one natural oil, cyclo selected from the group consisting of apricot seed oil, macadamia nut oil, almond oil, limnandes alba seed oil, jojoba oil, caprylic / capric triglycerides and mixtures containing one or more thereof A step of preparing an oil phase including a silicone oil including a pentasiloxane, a fatty acid and an ionic surfactant;
A first emulsifying step of preparing the bulky spherical emulsion by introducing the aqueous phase and the oil phase and using a vacuum emulsion tank and a homomixer; And
The bulky spherical emulsion containing nano-emulsified particles having an average particle size of 20 to 50 nm using a high-pressure microfluidizer at a pressure of 500 to 1500 bar and a temperature of 20 to 40 ° C. A second emulsifying step of preparing a nanoemulsion;
Method of producing a nano-emulsion composition comprising a. The method of claim 5,
The manufacturing step of the water phase and the manufacturing step of the oil phase comprises a step of stirring at a temperature of 70 to 80 ℃, respectively,
The first emulsifying step includes stirring at a speed of 1,000 to 3,000 rpm at a temperature of 70 to 80 ℃,
The second emulsifying step is a method for producing a nano-emulsion composition comprising the step of performing at least once at a pressure of 500 to 1500 bar (bar), a temperature of 20 to 40 ℃. The method of claim 5,
The water phase part comprises 0.1 to 2.0 wt% of the soybean-derived natural phospholipid, 10 to 20 wt% of the glycerin, and 0.2 to 0.5 wt% of the sodium stearoyl glutamate, based on the total weight of the total nanoemulsion composition. Further, 50 to 70% by weight of any one selected from the group consisting of Centella asiatica extract, Portulaca oleracea extract, Chamomile flower extract, Chaste tree extract, Burdock root extract, Situary mushroom extract and mixtures thereof,
The oil phase portion is 5 to 25% by weight of the natural oil, 5 to 12% by weight of cyclopentasiloxane with the silicone oil, 0.2 to 1.0% by weight of cetostearyl alcohol and steric acid based on the total weight of the total nanoemulsion composition. 0.2 to 1.0% by weight, 1.0 to 5.0% by weight of polyglyceryl-2 stearate and 0.5 to 2.5% by weight of pg-8 stearate as the ionic surfactant. A cosmetic composition comprising the nanoemulsion composition of claim 1. Cosmetics containing the cosmetic composition of claim 8. The method of claim 9,
The cosmetics are any one selected from skin lotion, milk lotion, essence, ampoule, nourishing cream, eye cream, foundation, BB cream, C. cream, sun cream, lip cream, lipstick and combinations of one or more thereof.

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