KR102337010B1 - Semi-transparent oil-in-water cosmetic composition with high content of oil stabilized, and preparing method for the same - Google Patents

Abstract

The present invention relates to a translucent oil-in-water (O/W) cosmetic composition in which high oil content is stabilized and a method for preparing the same. Specifically, sugar ester (Sugar ester)-based emulsifier; at least one oil selected from the group consisting of silicone oil, ester oil, and hydrocarbon oil; And polyol or polyol derivative; relates to a translucent oil-in-water (O / W) cosmetic composition comprising a.

Description

Semi-transparent oil-in-water cosmetic composition with high content of oil stabilized, and preparing method for the same

The present invention relates to a translucent oil-in-water (O/W) cosmetic composition in which high oil content is stabilized and a method for preparing the same. Specifically, the present invention relates to a high oil-resistant oil-in-water (O/W) cosmetic composition comprising 40% or more of a high content oil stabilized by a sugar ester emulsifier and a method for preparing the same.

The state in which one of the two immiscible liquid phases is dispersed in the form of small particles in the other liquid phase is collectively referred to as an emulsion, and generally has a size distribution of several microns to several tens of microns.

The emulsion is in a thermodynamically unstable state, and has a tendency to separate such as agglomeration between particles, particle sedimentation, particle growth and coalescence, and creaming. At this time, the stability of the emulsion can be greatly improved by preventing the separation of phases by containing a polymer in the outer box and preventing the movement of particles, or by having the polymer itself have emulsifying power. kinetic), the stability of the emulsion can be greatly improved. In general, in order to form a cream formulation, a high hardness wax, a specific oil, or a polymer is essentially used.

To date, several attempts have been made to prepare a nanoemulsion having fine particles, and among them, the in-phase temperature emulsification method and the high pressure emulsification method have been used. The in-phase temperature emulsification method is a low-energy emulsification method, and it is an emulsification method that uses the change in the hydrogen bonding force between the hydrophilic group and water of the nonionic surfactant according to the temperature change to make a nanoemulsion, whereas the high-pressure emulsification method is a high-energy emulsification method with physical pressure. It is an emulsification method for preparing nanoparticles by adding

Currently, a high-pressure emulsification method for producing a nano-emulsion using a high-pressure emulsifier has been widely used, but there is a limit to realizing a translucent formulation and stabilizing the formulation by applying a high content of oil to a cream formulation rather than a liquid. In addition, when a high content of oil is applied, the most important feeling of use in cosmetics was also found to be very greasy and oily.

In general, much effort is being made to strengthen moisture to prevent skin dryness, which is one of the causes of accelerated skin aging, and among emulsification technologies, Meltiramela liquid crystal technology can be used to enhance moisture retention. The multi-lamellar liquid crystal is used as a formulation that not only provides moisture retention, but also enhances skin absorption of water-soluble or oil-soluble active ingredients.

In order to form such a multi-lamellar liquid crystal structure in the past, it was formed by containing a large amount of cholesterol or cetostearyl alcohol in a large amount of nonionic surfactant, but it was still insufficient in long-term stability and soft feeling.

In addition, many efforts have been made to make the particles fine and uniform, but the prior art has the desired physical properties and feeling of use, and includes nano-sized particles and high content oil while producing a cosmetic that has a translucent appearance. Because there are many limitations, it has not been used much in terms of actual productivity.

The present inventors applied a high-pressure emulsification method to dilute oily components including high-content oil in water while having excellent stability because the average size of the emulsified particles is very small and showing a translucent appearance (Oil in Water, O/W) By developing a cosmetic composition, the present invention was completed.

An object of the present invention is to provide a cosmetic composition that uses a high pressure emulsifier to stabilize a cream containing a high content of oil without the use of a thickener.

The present invention is a sugar ester (Sugar ester)-based emulsifier; at least one oil selected from the group consisting of silicone oil, ester oil, and hydrocarbon oil; and a polyol or polyol derivative; an object of the present invention to provide a translucent oil-in-water (O/W) cosmetic composition comprising; and a method for preparing the same.

A first aspect of the present invention is a sugar ester (Sugar ester)-based emulsifier; Oil included in an amount of 10 to 50% by weight based on the total weight of the composition; and a polyol or polyol derivative; provides a translucent oil-in-water (O/W) cosmetic composition comprising.

In the present invention, "translucent" means that the transmittance of light at a wavelength of 600 nm in a 1 cm × 1 cm quartz cell is in the range of 2% to 45% using UV-2500PC UV-VIS REDCORDING SPECTROPHOTOMETER manufactured by SHIMADZU. say that

The composition of the present invention may be a uniform emulsion having a particle size of 1 μm or less by being prepared by a high pressure emulsification method.

The composition of the present invention includes oil and a sugar ester-based emulsifier as an oil phase component, and includes a polyol or a polyol derivative as an aqueous phase component.

The present inventors conducted research to increase the stability of a composition containing a high content of oil and to increase the feeling of use. As a result, when a sugar ester-based emulsifier is used, it is confirmed that the above object can be achieved, and the present invention has been completed did it

In general, much effort is being made to strengthen moisture to prevent skin dryness, which is one of the causes of accelerated skin aging, and among emulsification technologies, Meltiramela liquid crystal technology can be used to enhance moisture retention. Multi-lamellar liquid crystals are used as formulations that not only provide moisturizing lasting power but also increase the absorption of water-soluble or oil-soluble active ingredients into the skin. It was formed by containing a large amount of aryl alcohol, but it was still insufficient in long-term stability and soft feeling. To compensate for these shortcomings, it is a next-generation emulsification technology and is expected to form fine and stable liquid crystals and improve softness by forming liquid crystals using a sugar ester emulsifier with excellent skin affinity.

In the present invention, the sugar ester emulsifier is not particularly limited as long as it is commonly used for preparing oil-in-water emulsion compositions, but for example, the sugar ester emulsifier is sucrose oleate, sucrose polylaurate, sucrose It may be at least one selected from the group consisting of monostearate, sucrose distearate, sucrose polystearate, sucrose pentaerucate, sucrose palmitate, and mixtures thereof.

In this case, the sugar ester-based emulsifier may be included in an amount of 1 to 10% by weight, preferably 2 to 7% by weight, based on the total weight of the composition. If the amount exceeds 10% by weight, the formulation is not formed because it does not match the mixing ratio of the oil phase when preparing the nanoemulsion.

The composition of the present invention includes at least one oil selected from the group consisting of silicone oil, ester oil, hydrocarbon oil, and mixtures thereof.

The silicone oil, ester-based oil, hydrocarbon-based oil, and one type of oil selected from the group consisting of mixtures thereof are, for example, pentaerythrityl tetraethylhexanoate (Pentaerythrityl Tetraethylhexanoate), triethylhexanoin, dimethicone , cetyl octanoate, a mixture of dicaprylate and dicaprate, isopropyl myristate (Isopropyl Miristate), tocophenol acetate, and may be at least one selected from the group consisting of a mixture of caprylic and capric triglycerides.

The oil may be included in an amount of 10 to 50% by weight, preferably 20 to 45% by weight, based on the total weight of the composition. If the content of the oil is less than 10% by weight, the moisturizing feeling and emollient feeling of use are reduced, and the usability is deteriorated.

The polyol or polyol derivative is an aqueous phase component, and may be included as long as it is suitable for manufacturing a low-viscosity nano-emulsion, for example, it may be one selected from the group consisting of glycerin, monohydric or dihydric alcohol, and mixtures thereof. . Specifically, the polyol or polyol derivative included in the composition according to the present invention is, for example, selected from the group consisting of glycerin, butylene glycol, pentylene glycol, hexanediol, dipropylene glycol, and mixtures thereof. It may be one type, but is not limited thereto.

The polyol or polyol derivative may be included in an amount of 2 to 50 wt%, preferably 10 to 30 wt%, based on the total weight of the composition. If the content of the polyol or polyol derivative is less than 2% by weight or exceeds 50% by weight, the stability of the formulation may be inhibited due to the rapid polarity change of the continuous phase, and a creamy formulation may not be formed.

The composition according to the present invention may have a hardness of 10 to 100, preferably 20 to 80, more preferably 30 to 70. Since the composition of the present invention has a hardness in the above range, it has the advantage of being able to differentiate in appearance from the cream formulation having the existing micro-sized emulsified particles, and can be achieved by launching a new product using a jar type container.

The composition according to the present invention may further include a thickener or emulsion stabilizer as an auxiliary component used in the preparation of the oil-in-water nano-emulsion composition.

The thickener or emulsion stabilizer may include any suitable for nano-emulsion production, for example, carbomer, guar gum, xanthan gum, carboxymethyl cellulose, hydroxyethyl cellulose, sodium polyacrylate, hydroxypropyl Cellulose, beeswax, ethylenediamine/stearyldimer dilinoleate copolymer, polyamide-8 and glycerylbehenate/eicosadioate, acrylate/C10-30 alkyl acrylate copolymer, ammonium kryloldimethyltaurate It may be one selected from the group consisting of /vinylpyrrolidine copolymers and mixtures thereof, but is not limited thereto.

The composition according to the present invention may further include a pigment, fragrance, preservative, etc. as an auxiliary component used in the preparation of the oil-in-water nano-emulsion composition.

The cosmetic composition according to the present invention is not particularly limited in its formulation, but can be used on the skin, mucous membrane, scalp or hair, for example, softening lotion, nutrient lotion, lotion, cream, pack, gel, patch or spray ( Mist) and the like basic cosmetics; color cosmetics such as lipstick, makeup base or foundation; cleaning agents such as shampoo, conditioner, body cleanser, toothpaste or mouthwash; hair dressings such as hair tonic, gel, or mousse; Alternatively, it may be formulated as a cosmetic composition for hair, such as a hair agent or a hair dye. In addition, it can be widely applied to pharmaceuticals and quasi-drugs such as lotions, ointments, gels, creams, patches or sprays.

Preferably, the cosmetic composition according to the present invention may have a cream formulation.

A second aspect of the present invention, a first step of mixing an oil component comprising an oil and a sugar ester emulsifier; a second step of mixing an aqueous phase component comprising a polyol or a polyol derivative; and a third step of mixing the oil phase component of the first step and the aqueous phase component of the second step using a high pressure emulsifier.

The temperature conditions of the first step and the second step are preferably 70 ~ 75 ℃.

The third step includes mixing the oil phase component of the first step and the aqueous phase component of the second step twice using a high pressure emulsifier. The first pressure condition of the present invention is preferably 500 to 700 bar, and the second pressure condition is preferably used as a condition of 800 to 1300 bar.

The high-pressure emulsification method is a method of making nanoparticles by passing particles through a high-pressure emulsifier that applies a strong shear.

According to the present invention, it is possible to provide a translucent cream having a high oil content and a nano-sized particle size by using a high-pressure emulsification method, unlike the conventional emulsification method. Through this, it is possible to overcome the limitations of the appearance and feel of the existing emulsified cream, and moreover, it is possible to manufacture a creamy cosmetic composition having a variety of feel, and the emulsified particle size is small, so that the active ingredient can be effectively delivered to the skin.

1 shows the particle size distribution of the nano cream of Example 1.
2 is a photograph confirming the stability of the nano cream of Example 1 after storage at 40 ° C. for 30 days with transparency. (General emulsifying cream is prepared by homomixer emulsification)

Hereinafter, an experimental example (Example) of the present invention is exemplified. The following experimental examples (Examples) are provided only by way of example to help the understanding of the present invention, and the technical scope of the present invention is not limited thereby.

Example 1: Underwater type Nano Cream cosmetics Preparation of the composition

At the composition ratio shown in Table 1 below, each raw material of 1 part was weighed, stirred with a disper, and heated (75° C.). Next, each raw material of 2 parts was measured and stirred, heated (75° C.), mixed with 1 part, and stirred at 3000 rpm for 15 minutes using a Homo-mixer.

After that, the M-110P Microfluidizer® high pressure emulsifier was used twice to pass through the conditions of 700-1300 bar and cooled to 30° C. to prepare an emulsion.

<Comparative Example 1>

An emulsion was prepared in the same manner as in Example 1, except that sucrose polystearate was not used.

<Comparative Example 2>

An emulsion was prepared in the same manner as in Example 1, except that a high pressure emulsifier was not used.

Category (wt%) Raw material name Example 1 Comparative Example 1 Comparative Example 2 1 part



Purified water to 100 to 100 to 100 glycerin 6 6 6 Butylene Glycol 4 4 4 1,2-Hexanediol 2 2 2 ethanol 5 5 5 2 parts




olive oil 10 10 10 Hydrogenated Polydecene 10 10 10 Cyclopentasiloxane 8 8 8 Pentaerythrityltetraethylhexanoate 10 10 10 dimethicone 2 2 2 Sucrose Polystearate 5 0 5 stability stability layer separation layer separation

As shown in Table 1, the emulsion of Example 1 was stable after preparation, but layer separation was confirmed in the emulsions of Comparative Examples 1 and 2.

Part 2 in Table 1 is an oil phase part, and in Example 1, the total oil phase part (45% by weight) was composed of 40% by weight of oil and 5% by weight of sucrose polystearate emulsifier, so the emulsion was stable without layer separation. .

On the other hand, in Comparative Example 1, unlike Example 1, the emulsion stability was not secured because 40 wt% of oil constituted the oil phase without using an emulsifier. In the case of Comparative Example 2, unlike Example 1, since a general emulsification method was used, stability of the emulsion containing 40 wt% of oil was not secured even when sucrose polystearate was used. This is because, since Comparative Example 2 uses a general emulsification method, 40% by weight of the oil becomes micro-level oil particles, and thus cannot all enter the aqueous phase content or volume.

On the other hand, in Example 1 using the high-pressure emulsification method according to the present invention, since the oil particles are split into nano-sizes, they are broken down into small pieces and can be contained in a predetermined aqueous phase content or volume.

Experimental example 1: Stability evaluation by particle size analysis

The emulsions prepared in Example 1 and Comparative Examples 1 and 2 were evaluated for stability by particle size analysis.

1 shows the particle size of a nano-emulsion prepared by passing through a high-pressure emulsifier twice after Homo-Mix according to Example 1. FIG. As shown in FIG. 1 , the average particle size was at the level of 180 nm. In general, when the particle size is 200 nm or less, it can be easily judged with the naked eye whether the nanoemulsion has been well prepared because the appearance is translucent and has bluish characteristics.

In the formulation stability evaluation, it can be determined that stability is maintained if the same translucent appearance as immediately after manufacturing continues. Here, the particle size was measured using a particle size analyzer (Malvern Mastersizer 2000 particle size analyzer). Such particle size measurement can be used as another reliable method for judging the stability of the formulation in addition to the method of easily judging with the naked eye.

Experimental example 2: High temperature stability evaluation

For high-temperature stability evaluation according to the type of emulsifier, the emulsions of Comparative Examples 3 and 4 were prepared at the composition ratios shown in Table 2 below.

Specifically, first, each raw material of 1 part was measured, stirred with a disper, and heated (75° C.). Next, 2 parts of each raw material was measured/stirred, heated (75° C.), mixed with 1 part, and stirred at 3000 rpm for 15 minutes using a Homo-mixer. After that, the M-110P Microfluidizer® high pressure emulsifier was used twice to pass through the conditions of 700-1300 bar and cooled to 30° C. to prepare an emulsion.

After storing the formulations prepared in Example 1 and Comparative Examples 3 and 4 at 40°C, 50°C, and 60°C for 2 weeks, high temperature stability was confirmed.

Category (wt%) Raw material name Example 1 Comparative Example 3 Comparative Example 4
1 part


Purified water to 100 to 100 to 100 glycerin 6 6 6 Butylene Glycol 4 4 4 1,2-Hexanediol 2 2 2 ethanol 5 5 5
2 parts





olive oil 10 10 10 Hydrogenated Polydecene 10 10 10 Cyclopentasiloxane 8 8 8 Pentaerythrityltetraethylhexanoate 10 5 5 dimethicone 2 2 2 Sucrose Polystearate 5 0 0 Polyglyceryl-3 methylglucose distearate 0 5 0 Hydrogenated Lecithin 0 0 5 high temperature stability stability layer separation layer separation

As shown in Table 2, the emulsion of Example 1 was stable at high temperature, but layer separation was confirmed in the emulsions of Comparative Examples 3 and 4.

Experimental example 3: Transparency

The cream formulation of Example 1 was prepared, and transparency was visually observed after storage at 40° C. for 30 days, and the results are shown in FIG. 2 . As shown in FIG. 2, it was confirmed that the cream formulation of Example 1 had improved transparency compared to the general emulsified cream.

Experimental example 4: Check the hardness

For hardness evaluation, the emulsions of Examples 2 and 3 were prepared at the composition ratios shown in Table 3 below.

Specifically, first, each raw material of 1 part was measured, stirred with a disper, and heated (75° C.). Next, 2 parts of each raw material was measured/stirred, heated (75° C.), mixed with 1 part, and stirred at 3000 rpm for 15 minutes using a Homo-mixer. Thereafter, the M-110P Microfluidizer® high pressure emulsifier was used twice to pass through the conditions of 700-1300 bar and cooled to 30° C. to prepare an emulsion.

The hardness of the formulations prepared in Examples 1 to 3 was measured using FUDOH RHEO METER (manufactured by Rheotech), and the results are shown in Table 3 below.

Category (wt%) Raw material name Example 1 Example 2 Example 3
1 part

Purified water to 100 to 100 to 100 glycerin 6 6 6 Butylene Glycol 4 4 4 1,2-Hexanediol 2 2 2 ethanol 5 5 5
2 parts



olive oil 10 10 10 Hydrogenated Polydecene 10 10 10 Cyclopentasiloxane 8 8 8 Pentaerythrityltetraethylhexanoate 10 10 10 dimethicone 2 2 2 Sucrose Polystearate 5 2 7 Hardness 30 13 14

As shown in Table 3, the emulsion of Example 1 had much higher hardness than the emulsions of Examples 2 and 3.

Claims (9)

A first step of mixing and heating an oil phase component including an oil and a sugar ester emulsifier contained in an amount of 10 to 50% by weight based on the total weight of the composition;
a second step of mixing and heating an aqueous phase component including a polyol or a polyol derivative; and
As a method for producing a translucent oil-in-water (O/W) cosmetic composition comprising the third step of cooling the oil-phase component of the first step and the water-phase component of the second step by using a high-pressure emulsifier twice consecutively and then cooling ,
The polyol or polyol derivative is one selected from the group consisting of glycerin, butylene glycol, pentylene glycol, hexanediol, dipropylene glycol, and mixtures thereof, translucent oil-in-water (O/W) cosmetic A method for preparing the composition.
According to claim 1,
The composition is a semi-transparent oil-in-water (O/W) cosmetic composition that is prepared by a high-pressure emulsification method and is an emulsion having a uniform particle size of 1 μm or less.
According to claim 1,
The sugar ester emulsifier is sucrose oleate, sucrose polylaurate, sucrose monostearate, sucrose distearate, sucrose polystearate, sucrose pentaerucate, sucrose A method for producing a translucent oil-in-water (O/W) cosmetic composition that is at least one selected from the group consisting of os palmitate and mixtures thereof.
According to claim 1,
The method for producing a translucent oil-in-water (O/W) cosmetic composition that the sugar ester emulsifier is included in an amount of 1 to 10% by weight based on the total weight of the composition.
According to claim 1,
The oil is at least one selected from the group consisting of silicone oil, ester-based oil, hydrocarbon-based oil, and mixtures thereof.
According to claim 1,
The oil is pentaerythrityltetraethylhexanoate, triethylhexanoin, dimethicone, cetyloctanoate, a mixture of dicaprylate and dicaprate, isopropyl myristate, tocophenol acetate and caprylic and caprylic A method for producing a translucent oil-in-water (O/W) cosmetic composition of at least one selected from the group consisting of a mixture of free triglycerides.
delete According to claim 1,
The composition is a method of producing a translucent oil-in-water (O/W) cosmetic composition having a hardness of 10 to 100.
A translucent oil-in-water (O/W) cosmetic composition prepared by the method of any one of claims 1 to 6 and 8.

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