KR100553262B1 - Composition of emulsion containing hydrogenated lecithin and method for preparing the same using high pressure homogenizer - Google Patents

Abstract

The present invention relates to an emulsified composition using hydrogenated lecithin as a main emulsifier using a high pressure homogenizer, and a method for preparing the same, and more specifically, to an oil phase portion, a water phase portion, and an emulsifier applied a hydrogenated lecithin and a high pressure arc. It relates to an emulsified composition that can be effectively used in cosmetics by making emulsion particles that are uniform, fine and very stable using a moisturizer.

The present invention for this purpose, in the method for producing an emulsion composition for cosmetics, a) i) 1 to 30% by weight of the oil phase component; And ii) first emulsifying the emulsion composition comprising 0.5-5% by weight of a hydrogenated lecithin emulsifier in a homomixer; b) it provides a method for producing an emulsion composition for a cosmetic comprising the step of passing the primary emulsified composition in step a) at least once through a high pressure homogenizer.

Emulsified composition prepared by the production method of the present invention is excellent in emulsification stability, usability, good texture and can be prepared emulsion cosmetics that provide skin safety, excellent moisturizing power.

Cosmetics, emulsifying compositions, hydrogenated lecithin, emulsifiers, homomixers, homogenizers, polyoxyethylene (20) mono-stearates, polyoxyethylene cured castor oil

Description

Hydrogenated lecithin emulsified composition using high pressure homogenizer and manufacturing method {COMPOSITION OF EMULSION CONTAINING HYDROGENATED LECITHIN AND METHOD FOR PREPARING THE SAME USING HIGH PRESSURE HOMOGENIZER}

1 is a graph of the results of measuring the average particle size of the emulsion composition of Example 10.

2 is a graph of the results of measuring the average particle size of the emulsion composition of Example 11.

[Industrial use]

The present invention relates to an emulsified composition using hydrogenated lecithin (hereinafter referred to as hydrogenated lecithin) as a main emulsifier using a high pressure homogenizer, and a method for preparing the same, and more specifically, to an oil phase portion, a water phase portion, and an emulsifier. The present invention relates to an emulsified composition which can be effectively used in cosmetics by applying lecithin and making uniform, fine and highly stable emulsified particles using a high pressure homogenizer.

[Prior art]

In general, the general emulsion composition is increased in order to increase the stability of the oil phase and water, polyalcohol, etc., which is formulated with oil phase components such as liquid paraffin, petrolatum, synthetic esters, higher fatty acids, higher alcohols, and lanolin derivatives in an appropriate viscosity and feel. The aqueous phase to which the zero water-soluble polymer was applied was selected from an appropriate emulsifier and emulsified with a homomixer to prepare an emulsion composition. Most of the raw materials used in the cosmetic composition is relatively safe for the skin because it is applied to the skin, and as the emulsifier, nonionic surfactants having relatively low skin irritation have been mainly used.

However, when emulsifying with a general homomixer while applying a nonionic surfactant, it is difficult to make small and fine emulsified particles, and it is very difficult to apply to a low viscosity emulsified product (Public Publication No. 1990-007396).

Currently, many studies on emulsification technology have been conducted to produce very dense and fine emulsion composition with fluidity from low viscosity to high viscosity, but it contains 5 to 20% by weight of emulsifier, Mostly applied to face wash products. Generally known methods include D-phase emulsification and non-emulsification. The D-phase emulsification method and the non-aqueous emulsification method are carried out in a specific form system, and the resulting ones have problems in usability, stability, and the like (Publication Patent Publication No. 1998-000436, Japanese Patent Application Publication No. 45-32065).

Meanwhile, hydrogenated lecithin is a lecithin added with hydrogen to lecithin, and in general, the lecithin itself is difficult to apply as a raw material for cosmetics due to its poor odor and seizure stability. This is because the POV value is high. Autooxidation is a measure of stability over time, which is obtained by monitoring POV and COV over time. Here, POV is a measure of the automatic oxidation of the raw material itself, and it is a measure of peroxide value with time, and COV is a carbonyl value (Japanese Journal of Nutrition and Food Science Vol. 39, No. 5, P391 (1986). )).

Hydrogenated lecithin converts unsaturated fatty acids of lecithin into saturated fatty acids when hydrogen is added to the lecithin with a catalyst. Unlike lecithin, hydrogenated lecithin has been studied to be suitable for use in cosmetics because of its improved stability (odor, POV value, etc.) and excellent skin safety (Kutz G., Biehl P., Waldmann-Laue M., Jackwerth B). , SOFW-Journal, 123, 145-149 (1997)).

However, conventional emulsified products using hydrogenated lecithin have lower interfacial tension or emulsification ability than ordinary nonionic surfactants. It was possible to use. In addition, emulsified products emulsified with a general homomixer using hydrogenated lecithin have been mainly used to give an emulsifying agent, a feeling improver, or a simple moisturizing effect because the emulsion particles are unstable to several tens of micrometers. 1999-070313).

In addition, as interest in nature increases due to the improvement of living standards and interest in natural emulsifiers in terms of safety of the skin, emulsion compositions using natural emulsifiers such as lecithin have been developed. For example, a combination of ceramide and sphingolipid (patent application No. 1999-026753), a method for producing a lipid base with high lecithin content (patent application No. 1998-005075), and a combination of alcohol and lecithin (public patent) Publication No. 1997-004721) is reported. However, the emulsifying ability of the natural emulsifier, lecithin, has a higher interfacial tension than a general emulsifier, and the HLB (Hdrophilic Lipophilic Balance) value is only about 8, so that the emulsifying ability is lowered. It was difficult. In addition, the compositions did not meet the overall needs of cosmetics, such as safety, usability.

Accordingly, an object of the present invention is to provide a cosmetic emulsion composition and a method for producing the same, which exhibits low viscosity while using a small amount of a natural emulsifier while using a small amount of a natural emulsifier.

It is another object of the present invention to provide an emulsion composition for cosmetics and a method for producing the same, which have excellent uniformity and fineness of oily particles, and have excellent usability, moisturizing power, and safety to the skin.

[Means for solving the problem]

The present invention to achieve the above object,

In the manufacturing method of the emulsion composition for cosmetics,

a) 1 to 30% by weight of an oil phase component; And

   Ii) 0.5 to 5% by weight of hydrogenated lecithin emulsifier

   Primary emulsifying the emulsion composition comprising a homomixer;

b) the composition of the primary emulsified in step a) at least once in a high pressure homogenizer

   Second emulsifying step by passing

It provides a method for producing a cosmetic emulsion composition comprising a.

The pressure of the high pressure homogenizer is preferably 50 to 2500 atmospheres.

In addition, the present invention in the cosmetic emulsion composition,

a) 1 to 30% by weight of the oil phase component; And

b) 0.5-5% by weight of hydrogenated lecithin emulsifier

It provides an emulsion composition for a cosmetic having an average particle size of the oil phase component including a 100 to 400 nanometers, the viscosity of the water to 5000 cps or less.

Preferably, the composition further comprises up to 2.0% by weight or less of an emulsifier selected from the group consisting of c) polyglycerin fatty acid esters, polyoxyethylene fatty acid sorbates, polyoxyethylene hardened castor oil, and dicetyl phosphate.

Hereinafter, the present invention will be described in detail.

[Action]

The present invention is to provide an emulsion composition for cosmetics by using a hydrogenated lecithin as the main emulsifier and by using a high pressure homogenizer to produce a uniform and very fine emulsion.

The present invention provides an emulsion composition comprising 1 to 30% by weight of an oily component suitable for hydrogenated lecithin, such as vegetable oil, animal oil, synthetic ester, hydrocarbon, and 0.5 to 5% by weight of hydrogenated lecithin as an emulsifier. In addition, polyglycerin fatty acid ester, polyoxyethylene fatty acid sorbate and polyoxyethylene hardened castor oil or 0.03 to 3% by weight of diecetyl phosphate having surface charge may be further included for the purpose of reinforcing emulsifying ability. In addition, the emulsion is firstly emulsified with oil or water in a general stirrer or homomixer together with 5 to 15% by weight of water-based components such as polyhydric alcohol, and then passed through a high-pressure homogenizer in a second manner. Produces a safe, moisturizing and comfortable emulsion composition.

In general, the emulsified particle size in the emulsification is highly dependent on the ability to lower the interfacial tension by the emulsifier and the mechanical force during emulsification. However, hydrogenated lecithin has lower interfacial tension lowering ability and emulsification capacity than general surfactants, has low HLB, and has two alkyl chains due to its molecular structure. Therefore, hydrogenated lecithin, which is an emulsifier, forms a molecular association after applying a certain mechanical force. The particle size becomes smaller while forming a vehicle. It has also been found that applying a certain amount of mechanical force to the hydrogenated lecithin causes the oils to enter the vehicle and stabilize. The vehicle size at this time usually produces a fairly stable emulsification at the level of 400 nanometers or less.

The emulsion composition of the present invention can be prepared at low viscosity, can be used in cosmetic products requiring low viscosity, and the composition of the present invention can be used as a base even in products such as creams requiring high viscosity.

Hereinafter, each composition and the high pressure homogenizer of the emulsion composition of the present invention will be described in detail.

The high pressure homogenizer is a high pressure emulsifying oil, which means that the emulsion emulsified primarily with a general stirrer or a homomixer is subjected to a second emulsification through a high pressure homogenizer, and the pressure is 50 to 2500. It is manufactured under the high pressure of air pressure, and the process of atomizing oil particles is to make emulsified particles small by pressure fluctuation, cavitation, and collision force generated when the oil passes through the high pressure at 1 atm. When the emulsion is prepared, the homogenizer's emulsifying capacity is converted into energy, which is about 10,000 times larger than a general homomixer (Encyclopedia of Emulsion Technology, Vol 1 page 97 (1983)).

Preferable pressure in this invention is suitable to pass an emulsion 1 or more times at 200-900 atmospheres. Here, the most preferable size distribution of the emulsified particles is about 10000 to 30000 nanometers with the average size of the primary emulsified by the general homomixer, and the secondary emulsified by the high pressure homogenizer method after the first emulsified by the general homomixer. The average particle size is reduced to 100-400 nanometers.

The oily ingredients of the emulsified composition of the present invention are natural plant oils, such as jojoba oil, avocado oil, olive oil, balsam colostrum oil, almond oil, corn beola oil, sunflower oil, macadamia nut oil, meadowfoam oil, palm oil, palm oil, castor oil Free radicals and hydrocarbons such as squalane, liquid paraffin, and synthetic oils such as octyldodecanol, trioctanoin, isocetyl palmitate, isocetyl myristate, cetyloctanoate, neopentyl glycol, dicaprilate and dizopropyl seba Kate, dizostearyl adipate, dizopropyl amide sulfate, trimethylol propane trioctanoate, trimethylol propane triisostearate, pentaerythritol trioctanoate, isopropyl myristate, and the like. Use by selecting one or more. It is possible to mix and use in consideration of emulsification capacity reinforcement and economic efficiency, and when the sum of the compounding amount is 1 to 30% by weight, more preferably 5 to 10% by weight, an emulsion having excellent feeling and fluidity can be produced.

The emulsifier used in the emulsifying composition of the present invention is suitable for preparing low-viscosity cosmetics with excellent feeling and fluidity when containing 0.5 to 5.0% by weight of hydrogenated lecithin, the most fine and uniform, and very stable over time. An emulsion is prepared.

Emulsified particles of the present invention is produced in a very stable emulsion having a size of 100 to 400 nanometers. However, the finer emulsified particles do not satisfy the quality of the cosmetic as a whole, but have a stable area over a certain size. In general, in order to produce an emulsion having an average particle size distribution of less than 250 nanometers, the homogenizer must have a large pressure and a large number of passes, thereby decreasing efficiency. In more detail, most preferably the hydrogenated lecithin is 1 to 3% by weight, and the emulsified particles have a particle distribution of about 250 to 350 nanometers, and the viscosity of the emulsion is equal to or higher than that of water. Although it is high, it is good to have a fluidity | liquidity with a low viscosity of 5000 cps or less, and to become a more uniform and stable emulsion composition. Therefore, the number of passes of the homogenizer at this time is also appropriate one or more times less than five times in consideration of the efficient aspect.

In the present invention, when a small amount of polyglycerin fatty acid ester, polyoxyethylene fatty acid sorbate, or polyoxyethylene hardened castor oil or dicetyl phosphate having surface charge is applied to reinforce emulsifying capacity, Even under pressure, an emulsion having a particle size distribution of 250 to 350 nanometers as desired in the present invention can be prepared. More specifically, polyglycerol fatty acid ester, polyoxyethylene fatty acid sorbate and polyoxyethylene cured castor oil or emulsions by reducing homogenizer air pressure to 20% when mixed with dicetyl phosphate that gives surface charge to 2% by weight or less Even when prepared, the same emulsion as when used alone with hydrogenated lecithin can be obtained, and more preferably, when considering the emulsion particle distribution, stability, and usability, the desired emulsion can be obtained at 0.05 to 1.0% by weight.

When the emulsifier used in the present invention is described in more detail, the lecithin is preferably hydrogenated hydrogenated lecithin, which is hydrogenated to the lecithin obtained from the seeds of yolk, soybean, rapeseed, sunflower, cottonseed and corn, and particularly yolk and soybean. In addition, hydrogenated lecithin is specifically phosphatidyl choline, phosphatidyl ethanolamine, phosphatidyl inositol, phosphatidyl serine, phosphatidyl myelin, and a total of 40 wt% or more of phosphatidyl choline and phosphatidyl ethanolamine may be used. Since the lecithin itself has many kinds, the standard is set to PC (Phosphatidyl Choline, phosphatidylcholine) content, and the hydrogenated lecithin of the present invention is preferably those having a PC content of 20% by weight or more.

Fatty acids include dipalmitoyl, distearyl, dioleyl, dimyristyl, and the like, and are preferably saturated fatty acids. Specific examples of the polyglycerol fatty acid esters include decaglycerol monolaurate, decaglyceryl monomyristate, decaglyceryl monostearate, decaglyceryl monooleate, hexaglyceryl monolaurate, hexaglyceryl mono myristate, and the like. have.

In addition, specific examples of polyoxyethylene fatty acid sorbate are polyoxyethylene (20) sorbitan mono laurate, polyoxyethylene (20) sorbitan mono monopalmitate, polyoxyethylene (20) sorbitan mono stearate, polyoxy Ethylene (20) sorbitan monooleate, polyoxyethylene (20) sorbitan tristearate, and the like. The numbers in the horizontal direction refer to the number of moles of EO (polyoxyethylene) addition and are the same below.

Specific examples of polyoxyethylene hydrogenated castor oil include polyoxyethylene (20) hydrogenated castor oil, polyoxyethylene (40) hydrogenated castor oil, polyoxyethylene (50) hydrogenated castor oil, polyoxyethylene (60) hydrogenated castor oil, Polyoxyethylene (80) hardened castor oil, polyoxyethylene (100) hardened castor oil, and the like.

The aqueous phase components of the present invention include polyhydric alcohols such as ethylene glycol, glycerin, propylene glycol, 1.3.butylene glycol, dipropylene glycol, erythritol, sorbitol, lower alcohols such as ethyl alcohol, and isopropyl alcohol, and water.

The emulsified composition of the present invention can be added to the ingredients used in ordinary cosmetics, such as higher alcohols, higher fatty acids, vitamins and other active ingredients, sunscreens, antioxidants, preservatives, fragrances, colorants.

The present invention will be described in detail through the following examples and comparative examples. However, an Example is for illustrating this invention and is not limited only to these.

EXAMPLE

Examples 1-15

The hydrogenated lecithin and the oily ingredients are mixed in the weight ratio shown in Table 1 and heated and stirred at 70 ° C to make them uniform. In a separate mixer, the water phase components are mixed in the weight ratio shown in Table 1, and the oil phase components having a temperature of 70 ° C. are added to the water phase while stirring and warming to 70 ° C., and then emulsified and cooled.

The secondary emulsion was passed through a high pressure homogenizer with secondary emulsification, and the working pressure was passed once at 50 to 2500 atmospheres, but here at 200 to 900 atmospheres.

Comparative Examples 1 and 2

The hydrogenated lecithin and the oily ingredients are mixed in the weight ratio shown in Table 1 and heated to 70 ° C., stirred to make uniform. The water phase components were mixed in a separate mixer in the weight ratio shown in Table 1, and the oil phase components having a temperature of 70 ° C. were added to the water phase while being heated and stirred at 70 ° C., emulsified, and cooled.

Comparative Example 3

As the composition shown in Table 1, the general solubilization product was prepared by solubilizing the fragrance while stirring the purified water and the moisturizing component of the aqueous phase at room temperature.

Classification (% by weight) Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Example 11 Example 12 Example 13 Example 14 Example 15 Ingredient 1 2.5 2.5 - 2.5 2.5 2.5 2.5 0.5 5.0 10.0 15.0 2.5 2.5 2.5 2.5 2.5 2.5 2.5 Component 2 2.5 2.5 - 2.5 2.5 2.5 2.5 0.5 5.0 10.0 15.0 2.5 2.5 2.5 2.5 2.5 2.5 2.5 Ingredient 3 2.0 - - 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 1.0 3.0 5.0 2.0 2.0 2.0 2.0 Ingredient 4 - 3.0 - - - - - - - - - - - - 0.03 0.05 1.0 3.0 Ingredient 5 - - 0.3 - - - - - - - - - - - - - - - Ingredient 6 Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Ingredient 7 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 Ingredient 8 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 Ingredient 9 - - 5.0 - - - - - - - - - - - - - - - Ingredient 10 Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Ingredient 11 Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity Quantity High pressure treatment (bar) 0 0 0 200 400 600 900 400 400 400 400 400 400 400 320 320 320 320

In the table above,

Component 1 is jojoba oil, component 2 is neopentyl glycol dicaprate,

Component 3 is hydrogenated lecithin,

Component 4 is polyoxyethylene (20) mono-stearate,

Component 5 is polyoxyethylene cured castor oil,

Component 6 is purified water, component 7 is concentrated glycerin,

Component 8 is dipropylene glycol, component 9 is ethanol,

Component 10 is a preservative and component 11 is a fragrance.

(Stability evaluation)

), 약간 분리(△), 완전 분리( ×)로 안정성을 평가하고 그 결과를 표 2에 나타내었다.Oil of each Example and Comparative Example after storage for 1 month at 50 ℃, 0 ℃, cycle (-10 ℃ <1 day → 45 ℃ <1 day →-10 ℃ <1 day>…) , Observing conditions such as changes in particle size, very good (◎), good (

), Slightly separated (△) and completely separated (×) to evaluate the stability and the results are shown in Table 2.

Stability test result division Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Example 11 Example 12 Example 13 Example 14 Example 15 50 ℃ ×

◎ △ ◎ ◎

◎ ◎

◎ ◎ ◎

◎ ◎

0 ℃ × ◎ ◎

◎ ◎ ◎

◎ ◎

◎ ◎ ◎ ◎ ◎ ◎ ◎ cycle × △ ◎ △ ◎ ◎

△ ◎ ◎

◎ ◎

◎ ◎

(Particle size distribution)

Particle size and the degree of distribution of the emulsion of each Example and Comparative Example was measured immediately after the production using a commonly used particle size analyzer (Particle Sizer) and the results are shown in Table 3.

Particle Average Size and Distribution division Particle Average Size (nm) Comparative Example 1 28,000-32,000 Comparative Example 2 22,000 ~ 26,000 Comparative Example 3 Not measurable Example 1 350-450 Example 2 280-380 Example 3 260-360 Example 4 240-340 Example 5 150-300 Example 6 270-370 Example 7 260-360 Example 8 280-380 Example 9 290-390 Example 10 180-280 Example 11 150-250 Example 12 250-350 Example 13 250-350 Example 14 260-360 Example 15 250-350

As shown in Tables 2 and 3, when prepared by the general method as in the comparative example, the emulsion particle size was also very large and unstable.

When polyoxyethylene (20) monostearate was the main emulsifier, the stability was superior to that of the lecithin alone, but it was much more unstable and larger in particle size than the examples using homogenizer. In addition, the effect of pressure on the production of emulsions using homogenizers is that the higher the pressure, the more fine the particles and fluidity of the emulsion can be obtained. Considering this, preferably 400 to 600 is suitable.

The average particle distribution of the emulsion composition of Example 10 is shown in FIG. 1 using PSA (particle size analizer; Mastersizer of Malvern), and the average particle distribution of the emulsion composition of Example 11 is shown in FIG. Indicated.

When using hydrogenated lecithin alone, it is possible to obtain stable and fine emulsions at 1 to 3% by weight, and to increase the manufacturing cost in terms of energy efficiency when too high pressure or when the homogenizer is passed through several times. In order to obtain the desired emulsion through one pass under low pressure, polyoxyethylene (20) monostearate was applied to reduce the pressure by 20%, resulting in stability over time and particle size, such as that used with hydrogenated lecithin alone. In addition, the compounding amount was more stable and economically produced at 0.05 to 0.1% by weight.

Comparative Example 3 was unable to measure particle size with a general solubilized product.

(Evaluation)

Very good (5 points), excellent (3 points), moderate (0 points), and bad (-3 points) for 45 adult panelists in their 20s to 40s. Points), very poor (-5 points) to show the sensory evaluation, and the results are shown in Table 4, the rating calculated by the following formula (1).

Rating = {(very good head) × 5 + (good head) × 3 + (normal head) × 0

        + (Bad head count) × -3 + (very bad head count) × -5} ÷ {number of ratings}

Usability evaluation result phrase                                                  minute Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Example 11 Example 12 Example 13 Example 14 Example 15 grade -2.4 1.8 2.6 3.0 3.7 3.7 3.7 3.8 4.1 3.7 4.0 3.7 4.1 4.3 4.3 3.9 4.1 3.9

As shown in Table 4, even if the same composition as Comparative Example 1 and Examples 1, 2, 3, 4, the preference was different depending on the presence and pressure of the high pressure treatment. The reason is that when the high pressure is not treated, the particles are large and the viscosity is high, which is a burden on the skin.

In addition, when the comparison example 3 and the general solubilization product is compared with the examples, the results of the evaluation of the feeling of the example obtained a high score. It is preferred because it keeps you moist for a long time.

(Moisture retention evaluation)

Very good (5 points), excellent (3 points), moderate (0 points), and bad (-3 points) for 45 adult panelists in their 20s to 40s. Point) and very bad (-5 points) to make the sensory evaluation, and the result is shown in Table 5, the rating calculated by the above formula (1).

Moisturizing ability evaluation result phrase                                                  minute Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Example 11 Example 12 Example 13 Example 14 Example 15 grade 1.4 1.5 2.8 3.5 3.8 4.0 4.2 4.3 4.2 4.0 4.2 4.2 4.2 4.3 4.2 4.3 4.2 4.2

In Comparative Examples 1 and 2 prepared according to the general emulsification method, as shown in Table 5, the moisturizing power was low and even if the same composition as in Comparative Example 1 and Examples 1, 2, 3, 4, the moisturizing power according to the particle size distribution Came out differently. The moisturizing power was relatively low when the particles were large because they were not subjected to high pressure treatment or manufactured under low pressure. The smaller the particles, the better the moisturizing power.

In addition, when the emulsifier is used in combination with a high pressure or a high pressure, it has a small particle distribution, it has a high rating for the moisturizing effect. This can be seen that when used in combination with an emulsifier can be reduced in pressure and the desired excellent moisturizing power.

Comparing Comparative Example 3 and Example, which is a general solubilized product, it can be seen that the moisturizing effect of the embodiment to which the hydrogenated lecithin was applied was very excellent. This is preferred because the embodiment can keep moist longer.

(Safety assessment)

15 to 20 μg of each panel was applied to the arms of 50 panelists of the emulsified composition prepared as in Comparative Examples and Examples, and then sealed and swollen. Ascending (2 points), itching (1 point), no irritation (0 point) were observed and evaluated, and the result is shown in Table 6 with the rating calculated by the above formula (2).

Rating = {(erythema / swelling) × 2 + (itch) × 1 + (no stimulation) × 0} ÷ {number of evaluations}

Safety evaluation result division Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Example 11 Example 12 Example 13 Example 14 Example 15 grade 0.06 0.1 0.08 0.02 0.02 0.02 0.02 0.0 0.04 0.0 0.02 0.02 0.04 0.02 0.04 0.04 0.02 0.02

The results of the safety evaluation of Table 6 show that the comparative examples or the examples are relatively safe for the skin, but the examples prepared by the high pressure using the homogenizer are much safer for the skin than the comparative examples generally prepared.

The emulsified composition of the present invention is a high pressure in combination with (hydrogenated) lecithin, a natural surfactant familiar to skin, or polyglycerin fatty acid ester, polyoxyethylene fatty acid sorbate or polyoxyethylene hardened castor oil, or dicetyl phosphate which has surface charge. Emulsifier particles are made smaller by using homogenizer, so it has excellent emulsion stability, safety for skin, ease of use, and moisturizing ability. It can be used suitably also as a base of cosmetics.

Therefore, the emulsion composition of the present invention can produce an emulsion cosmetic having excellent emulsification stability, good usability, good texture and provide skin safety and excellent moisturizing power.

Claims (6)

In the manufacturing method of the emulsion composition for cosmetics, a) 1 to 30% by weight of an oil phase component; And    Ii) 0.5 to 5% by weight of hydrogenated lecithin as emulsifier    Primary emulsifying the composition comprising a homomixer; b) secondary emulsifying the composition emulsified in step a) at least once through a high pressure homogenizer having a pressure of 50 to 2500 atm; Method of producing an emulsion composition for a cosmetic comprising a. The method of claim 1, The composition of step a) further comprises 0.03 to 2.0% by weight of an emulsifier selected from the group consisting of polyglycerol fatty acid ester, polyoxyethylene fatty acid sorbate, polyoxyethylene hardened castor oil, and dicetyl phosphate The manufacturing method of the emulsion composition for cosmetics. delete delete delete According to claim 1, wherein the i) oil phase component Natural plant oils consisting of jojoba oil, avocado oil, olive oil, balsam colostrum, almond oil, corn beola oil, sunflower oil, macadamina nut oil, meadowfoam oil, palm oil, palm oil and castor oil; Hydrocarbons consisting of squalane and liquid paraffin; And Octyldodecanol, trioctanoin, isocetyl palmitate, isocetyl myristate, cetyloctanoate, neopentyl glycol dicapryrate, dizopropyl sebacate, dizostearyl adipate, dizopropyl amide sulfate, Synthetic oil consisting of trimethylol propane trioctanoate, trimethylol propane triisostearate, pentaerythritol trioctanoate, and isopropyl myristate Method for producing an emulsion composition for a cosmetic, which is selected from the group consisting of one or more.

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