KR20160082054A - Emulsifier-Free Cosmetic Composition of the Oil-in-Water Emulsion Type and Preparation Method Thereof - Google Patents

Abstract

The present invention relates to an oil-in-water emulsion-type cosmetic composition containing no emulsifier and a method for preparing the same. More particularly, the present invention relates to an oil-in-water emulsion-type cosmetic composition comprising sodium diarra- midoglutamide lysine and a fatty alcohol, And a manufacturing method thereof.
According to the present invention, it is possible to improve the skin moisture content by forming fine emulsified particles using sodium diarra mamidoglutamide lysine and fatty alcohol, and to balance the sebum essential for skin maintenance, It is possible to improve the stickiness and heavy feeling of use of a large amount of the surfactant.

Description

TECHNICAL FIELD The present invention relates to an oil-in-water emulsion type cosmetic composition containing no emulsifier, and an emulsifier-free cosmetic composition of the present invention.

The present invention relates to a non-emulsifying cosmetic composition for emulsifying cosmetics and a method for producing the same, which can maintain skin emulsion stability while maintaining an emollient-free skin whitening effect.

EMULSION can be defined as liquid-liquid dispersion system and is used in various industrial fields such as cosmetics and food. Generally, emulsions for cosmetics are mostly aqueous solutions, in which water or a water-soluble substance and an oil-based substance such as oil or wax are emulsified with an emulsifier. Here, additives, fragrances, pigments and the like are added to add an aesthetic element. Therefore, their stability should be designed in consideration of the conditions of use and the fact that they are used for a substantial period of time.

Emulsions can be classified by interfacial chemical methods and mechanical methods. In the interfacial chemical methods, changes are made to adjust the hydrophilic-lipophilic balance value of the emulsifier, the emulsification temperature and the addition method of each component to make fine and stable emulsions Various methods such as a phase-phase emulsification method, an inverted emulsification method, a gel emulsification method, a non-aqueous emulsification method, and a liquid crystal emulsification method through a through-flow method are used. Second, as a method of using the mechanical force, there is known a method of making a stable emulsion by using a suitable emulsifying device such as a homomixer, a prime mixer, and a three-step roll. In order to make fine emulsions, it is necessary to use a surfactant together with a mechanical force. By using the function of the surfactant, emulsions of various sizes can be produced from the solubilization system.

However, the added synthetic surfactant causes skin irritation or allergy. This is because a surfactant having an amphipathic structure tends to form micelles by solubilizing skin lipids, which causes lipid damage to the skin, weakness of the barrier, irritation of the skin and allergy.

There have been various attempts to maintain the emulsion stability of the emulsion cosmetic composition without using a surfactant. For example, Korean Patent Laid-Open No. 10-2008-0061689 proposes that emulsification of a water-in-oil type emulsion cosmetic composition can be stabilized by using a fatty acid, a fatty alcohol and a cellulose derivative without using an emulsifier.

To make a fine and stable emulsion using as little surfactant as possible, it is not sufficient to simply mix and stir the surfactant. To solve these problems, water, oil, and surfactant are used in the case of producing general emulsions by the D phase emulsification method, but in the D phase emulsification, the emulsions of fine particles are further prepared by using polyhydric alcohols. In addition, the conventional emulsification method is completed by dissolving surfactant in oil and putting it in water phase and using mechanical shear force. In D phase emulsification method, D phase is prepared by dissolving surfactant in solution of water and polyhydric alcohol, To prepare an O / D emulsion and dispersing it in water. It is possible to complete stable and finer emulsions of particles in an oil oil which is industrially useful but difficult to stabilize when emulsified using the D phase emulsification method.

On the other hand, as the interest in skin expression of women has increased recently, they are shining as an essential condition of healthy skin. The outer skin (Epidermis) is functionally divided into the stratum corneum, the transparent layer, the granular layer, and the basal layer from the outside to the inside. The dermis in the inner part is dense connective tissue and the hypodermis inside the dermis It serves to fix the skin to the internal organs. Among them, epidermis is the thinnest layer among the three skin structures, and it is a function to moisturize and protect the skin, and research on skin beauty has been actively carried out. It is reported that the horny layer of the epidermis must maintain a moisture content of 10% or more, and the thickness of the stratum corneum varies depending on the content.

An important function of the stratum corneum is to prevent loss of moisture and electrolytes from our body to the outside and to protect it from external physical and chemical damage. The stratum corneum is composed of keratinocytes composed of protein and lipids surrounding keratinocytes. To maintain a healthy skin condition, the stratum corneum should contain about 30% of water, 1) sebum, 2) natural moisturizing factor (NMF) such as amino acids, urea, and organic acids, and , And 3) intercellular lipids. If these factors are not balanced or deficient, dry skin can be triggered and the skin may lose its shine.

KR 10-2008-0061689 A

Accordingly, the present inventors have made various efforts to produce a cosmetic composition in which the emulsion stability is maintained without containing a conventional synthetic or natural emulsifier. As a result, when sodium diirraamidoglutamide lysine and fatty alcohol are contained, emulsion stability And the present invention has been completed.

Accordingly, an object of the present invention is to provide a non-emulsifying agent emulsified cosmetic composition which can maintain skin emulsion stability while at the same time having an effect of improving skin glare without containing an emulsifying agent.

In order to achieve the above object,

The present invention provides an oil-in-water emulsion type cosmetic composition comprising sodium diaramydoglutamide lysine and a fatty alcohol.

Also,

Preparing a D phase comprising water, a polyol, and sodium diureamidoglutamide lysine;

Mixing and dissolving the oil phase and the fatty alcohol-containing oil phase on the D phase to obtain an O / D emulsion; And

Adding an aqueous phase containing polyol and water to the O / D emulsion to emulsify

The present invention provides a method for producing an oil-in-water emulsion type cosmetic composition.

The emulsifying cosmetic composition of the present invention is characterized in that it forms fine emulsified particles by using sodium diarraamidoglutamide lysine and fatty alcohols to improve skin moisture content and balances sebum essential for skin maintenance. And it is possible to improve the stickiness and heavy use feeling of a large amount of the surfactant.

Fig. 1 is a photograph showing the emulsion stability of the oil-in-water emulsified cosmetic composition of Example 1 and Comparative Examples 1 to 3. Fig.
FIG. 2 is a photograph of emulsified particles observed through an optical microscope to examine the emulsion particle shape of the oil-in-water emulsion type cosmetic composition of Example 1 and Comparative Examples 1 to 3. FIG.
Fig. 3 is a graph showing the results of measurement of skin gloss after use of the cosmetic composition before use, Example 1 and Comparative Example 3. Fig.

Hereinafter, the present invention will be described in more detail.

In the present invention, a non-emulsifying agent emulsifying cosmetic composition capable of maintaining emulsion stability without containing a synthetic or natural emulsifying agent is presented. The emulsifying cosmetic composition according to the present invention contains sodium diirraamidoglutamide lysine and a fatty alcohol, so that emulsion stability is maintained.

SODIUM DILAURAMIDOGLUTAMIDE LYSINE is an amino acid moisturizing agent derived from plants. It has hydrophilic properties of lauroyl group and amphic property of glutamic acid group having hydrophilic property, The emulsion stability is maintained in the cosmetic composition of the present invention. Accordingly, the cosmetic composition of the present invention can produce a cosmetic composition having excellent emulsification stability without containing conventional synthetic and natural emulsifiers.

In addition, sodium diiramidoglutamide lysine contained therein is an amino acid moisturizing agent and can impart a moisturizing effect to the skin.

It is preferable that the sodium diarra mamidoglutamide lysine is contained in an amount of 0.05 to 2% by weight in the total oil-in-water emulsion type cosmetic composition according to the present invention. If the content of disodium diiramidoglutamamide lysine is less than 0.05% by weight, the emulsion stability and the skin improvement effect can not be expected. If the content exceeds 2% by weight, the emulsion stability is lowered and precipitation occurs Because.

Fatty alcohols also have amphipathic properties that can exert a surfactant effect, thus forming emulsions without emulsifiers. At this time, the fatty alcohol preferably has about 14 to 22 carbon atoms, and may be linear, branched, saturated or unsaturated. Preferably, one selected from the group consisting of myristyl alcohol, cetyl alcohol, stearyl alcohol, butyl alcohol, behenyl alcohol, oleyl alcohol and mixtures thereof is used. Most preferably a mixture of a butyl alcohol and a behenyl alcohol is used.

The content of the fatty alcohol is preferably 1 to 10% by weight. If the content of the fatty alcohol is below the lower limit, the stability of emulsification for a long time is lowered. If the content exceeds the upper limit, .

Preferably, the cosmetic composition according to the present invention contains 100%

i) a top D comprising 3 to 10% by weight of water, 5 to 20% by weight of polyol and 0.05 to 2% by weight of sodium diaramydoglutamide lysine,

Ii) an oil phase comprising 10 to 20% by weight of oil and 1 to 10% by weight of fatty alcohol,

Iii) 3 to 10% by weight of polyol and water

.

The water is distilled water, preferably deionized distilled water, and is used as the remainder to satisfy 100 wt% of the total weight%.

Typically, the polyol is selected from the group consisting of glycerin, propylene glycol, dipropylene glycol, 1,3-butyleneglycol, polyethylene glycol, propanediol, pentylene glycol, sorbitol, Licenses are available.

The oil used in the present invention is not particularly limited, and any oil conventionally used in this field is possible. Typically, hydrocarbon-based oils including polydecene and paraffin oil; Ester-based synthetic oils including cetyl ethylhexanoate, glyceryl trioctanoate, octyldodecyl myristate, isopropyl palmitate, isopropyl myristate and octyl palmitate; Silicone oil comprising cyclomethicone, dimethicone, cyclotetrasiloxane, cyclopentasiloxane, cyclohexasiloxane, ethenyltrisiloxane, trisiloxane and cycloheptasiloxane; Animal oil; Vegetable oils including mango butter, shea butter, kufuacu butter, macadamia seed oil; Ethoxylated alkyl ester oils; Caprylic / capric triglyceride, ceramide, and mixtures thereof.

The method for producing an oil-in-water emulsion type cosmetic composition according to the present invention may employ the D phase emulsification method.

Specifically, preparing a D phase comprising water, a polyol and sodium diaramidoglutamide lysine;

Mixing and dissolving the oil phase and the fatty alcohol-containing oil phase on the D phase to obtain an O / D emulsion; And

Adding an aqueous phase containing the polyol and water to the O / D emulsion and emulsifying the emulsion.

The mixing step is carried out in a vacuum emulsification tank capable of temperature control and stirring by a conventional method, and stirring and heating are performed according to need.

For example, the upper part of the water and the upper part of D are heated to 50 to 80 캜, preferably 65 to 75 캜, and the oil part is heated to 50 to 80 캜, preferably 65 to 75 캜, So that it can be dissolved.

The stirring is carried out in a vacuum emulsification tank at a speed of 2000 to 4000 rpm, preferably 3000 rpm for 3 to 10 minutes using a homomixer.

After cooling to 25 to 30 캜, an oil-in-water emulsion type cosmetic composition can be prepared.

Hereinafter, preferred embodiments of the present invention will be described in order to facilitate understanding of the present invention. However, the following examples are provided to further understand the present invention, and the present invention is not limited by the examples.

Examples and Comparative Examples

≪ Example 1 and Comparative Examples 4 to 7 >

A, B, C, and D were heated to 75 degrees.

After mixing A and B, C was slowly poured onto A + B and mixed and dissolved homogeneously with Agi mixer.

 D, and mixed with a homomixer.

 E was added, F was added for neutralization, and G was added.

After cooling to 30 degrees, it was completed.

<Comparative Examples 1 and 2>

A, B, C, and D were heated to 75 degrees.

A, B and D were uniformly mixed.

C was slowly poured onto A + B + D and homogeneously mixed and dissolved with a homomixer.

 E was added, F was added for neutralization, and G was added.

Completely cooled to 30 degrees

&Lt; Comparative Example 3 &

A, B, C, and D were heated to 75 degrees.

A and D were uniformly mixed.

B and C were homogeneously mixed and then homogeneously mixed and dissolved with homomixer while slowly pouring onto A + D.

 E was added, F was added for neutralization, and G was added.

After cooling to 30 degrees, it was completed.

division Raw material name
(Content:% by weight) Example
One Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 A water 5 5 5 5 5 5 5 5 glycerin 10 10 10 10 10 10 10 10 B Sodium diureamidoglutamide 0.5 0.5 One - 0.04 2.5 0.5 0.5 Glyceryl stearate, PEG-100 stearate (GLYCERYL STEARATE, PEG-100 STEARATE) - - - 2 - - - - Cetearyl Alcohol and Cetearyl Glucoside (CETEARYL ALCOHOL, CETEARYL GLUCOSIDE) - - - 2 - - - - C Butyleneglycol dicaprylate / dicaprate 10 10 10 10 10 10 10 10 Squalane 10 10 10 10 10 10 10 10 THEOBROMA GRANDIFLORUM SEED BUTTER 2 2 2 2 2 2 2 2 Dimethicone 3 3 3 3 3 3 3 3 Tocopheryl acetate 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Butyl alcohol
(BATYL ALCOHOL) 2.5 2.5 2.5 1.5 2.5 2.5 0.4 5.5 Behenyl alcohol
(BEHENYL ALCOHOL) 2.5 2.5 2.5 1.5 2.5 2.5 0.4 5.5 D water TO 100 TO 100 TO 100 TO 100 TO 100 TO 100 TO 100 TO 100 Butylene glycol 5 5 5 5 5 5 5 5  Panthenol One One One One One One One One Preservative One One One One One One One One E Carbomer 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 F Tromethamine (10%) 3 3 3 3 3 3 3 3 G Beauty 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Experimental Example 1: Emulsification stability Confirm

In order to confirm the emulsion stability of the oil-in-water emulsified cosmetic composition of Example 1 and Comparative Examples 1 to 7, stability at room temperature for one week was confirmed. The results are shown in Table 2 and Fig.

Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Day 1 ○ × ▽ ○ × ▽ ○ ○ Day 3 ○ × × ○ × × ▽ ○ Day 7 ○ × × ○ × × ▽ ▽ <Evaluation Criteria>
○: No separation phenomenon, viscosity maintained
△: There is no separation phenomenon, but viscosity is lowered
▽: some separation phenomenon occurred
X: Significant separation phenomenon occurred

As shown in Table 1 and FIG. 1, in Example 1, there was no separation phenomenon for 7 days, viscosity was maintained, and emulsion stability was excellent. On the other hand, Comparative Example 1, which contained the same amount of anionic moisturizing agent but which was obtained by direct emulsification, was separated in one day without emulsification and Comparative Example 2 containing an excessive amount of amino acid moisturizing agent was stable However, after the 3rd day, the oil was not completely separated and could not be maintained. In the case of Comparative Example 3 in which direct emulsification was performed using a nonionic ester emulsifier generally used in emulsification, the emulsion stability was excellent as in Example 1.

As a result of conducting experiments of Comparative Example 4 and Comparative Example 5 in order to examine the emulsifying power according to the content of the amino acid moisturizing agent, it was confirmed that when the amino acid moisturizing agent was contained in an amount of less than 0.05% by weight, , It was confirmed that when the amino acid humectant exceeding 2% by weight was added, the surfactant saturates due to excessive interfacial activity and precipitation occurs after 3 days.

In addition, emulsifying power according to the content of fatty alcohol was confirmed through Comparative Example 6 and Comparative Example 7. When the total amount of the fatty alcohol is less than 1.0% by weight, the stability of emulsification for a long period of time is lowered and the viscosity is low. When the fatty alcohol having a total content of more than 10% by weight is contained, the compatibility between the fatty alcohol and the oil is poor, and the content of the fatty alcohol having a relatively high melting point relative to the oil is high to precipitate in a crystalline form, And it was confirmed that it was separated.

Emulsion particles were identified through an optical microscope in order to examine the emulsion particle shape of the oil-in-water emulsion type cosmetic composition of Example 1 and Comparative Examples 1 to 3, and are shown in FIG.

As can be seen from FIG. 2, it was confirmed that very fine emulsion particles were uniformly distributed in the case of Example 1, and in the case of Comparative Examples 1 and 2 in which the emulsion was formed by the direct emulsification method, they were present as macroemulsion particles . In Comparative Example 3 in which emulsions were directly emulsified using a nonionic emulsifier, it was confirmed that the particles were smaller than those of Comparative Examples 1 and 2, but that Example 1 formed finer particles.

Experimental Example 2: Improvement effect Confirm

In order to confirm the effect of improving the glossiness by using the cosmetic composition, the regularly reflected light of the skin was measured. If the surface of the skin is mirror-like, the specular value increases, and when the surface of the skin becomes rough, the diffuse reflection value increases. Also, the roughness of the skin is controlled by moisturizing. When the skin is moistened, the fine lines decrease and the diffuse reflection of the skin disappears, and the skin looks glossy. The specular reflection of the skin was measured using CD-2500d (minolta, Japan). Unlike conventional spectrophotometer, CD-2500d simultaneously measures SCI and SCE through two pulsed xenon lamps and displays it on the liquid crystal within 1.5 seconds. L * (SCI, SCE) corresponding to the cheek area of the face was measured three times and the average of the measurements was obtained. The difference between the SCI value and the SCE value was calculated. The results are shown in Fig.

Glossy = ΔSpecular reflectance = SCI (specular component included) -SCE (specular component excluded

Referring to the results of FIG. 3, in Example 1, a clear improvement in glossiness was observed. In Comparative Example 3, which was directly emulsified using a nonionic surfactant, the glossiness was improved, but it was lower than Example 1 . It is considered that the amino acid moisturizer forms fine emulsified particles through D phase emulsification to increase the moisture content of the skin and to balance the sebum with the sebum, thereby improving the shine of the skin.

Experimental Example 3: Sensory evaluation

In order to compare the overall feel and skin gloss of Example 1 and Comparative Examples 1 to 3, evaluation of sensation of use and skin gloss sensory evaluation were carried out as shown in Table 3 below. Sensory evaluation was carried out on 15 women in their mid - to - late 20s. Subjects were asked to write a questionnaire on the scale of 'highly satisfied' and 'very low' respectively. The results are shown in Table 3.

Example 1 Comparative Example 3 Skin gloss 4.7 4.0 Brittle 4.3 3.9 Stickiness 4.6 3.6 heaviness 4.8 3.5 Skin irritation 5.0 5.0 Total score 4.5 4.0

As shown in Table 3, in the case of Example 1, it was evaluated that the spreadability was softer and less sticky than Comparative Example 3, and the feeling of heavy feeling after use was less. The skin glossiness was also evaluated to be superior to Comparative Example 3.

This is because, in the case of Comparative Example 3, in the case of Example 1 in which the solid phase surfactant is generally used in a large amount so that the emulsion is stabilized by using a small amount of amino acid moisturizer through the D phase emulsification, , It is considered that a small amount of surfactant is used in the total amount and at the same time, it acts as a moisturizing agent, so that it is not lighter, sticky, and does not feel uncomfortable.

Claims (14)

An oil-in-water emulsion oil-in-water emulsion cosmetic composition comprising sodium diaramydoglutamide lysine and a fatty alcohol. The cosmetic composition according to claim 1, wherein the content of sodium diurea mudoglutamide lysine is 0.05 to 2% by weight based on the total cosmetic content. The cosmetic composition according to claim 1, wherein the content of the fatty alcohol is 1 to 10% by weight based on the total amount of the cosmetic. The cosmetic composition according to claim 1, wherein the fatty alcohol is a saturated, unsaturated, linear, or branched group having 14 to 22 carbon atoms. The cosmetic composition according to claim 4, wherein the fatty alcohol is one selected from the group consisting of myristyl alcohol, cetyl alcohol, stearyl alcohol, butyl alcohol, behenyl alcohol, oleyl alcohol and mixtures thereof. 6. The cosmetic composition according to claim 5, wherein the fatty alcohol is a mixture of butyl alcohol and behenyl alcohol. The cosmetic composition according to claim 1, wherein the cosmetic composition comprises 100%
i) a top D comprising 3 to 10% by weight of water, 5 to 20% by weight of polyol and 0.05 to 2% by weight of sodium diaramydoglutamide lysine,
Ii) an oil phase comprising 10 to 20% by weight of oil and 1 to 10% by weight of fatty alcohol,
Iii) 3 to 10% by weight of polyol and water
&Lt; / RTI &gt; The method of claim 7, wherein the polyol is selected from the group consisting of glycerin, propylene glycol, dipropylene glycol, 1,3-butylene glycol, polyethylene glycol, propanediol, pentylene glycol, sorbitol, Diol or isoprene glycol. Preparing a D phase comprising water, a polyol, and sodium diureamidoglutamide lysine;
Mixing and dissolving the oil phase and the fatty alcohol-containing oil phase on the D phase to obtain an O / D emulsion; And
Adding an aqueous phase containing polyol and water to the O / D emulsion to emulsify
The method of manufacturing an oil-in-water emulsion type cosmetic composition according to claim 1, The process according to claim 9, wherein the fatty alcohol is a saturated, unsaturated, linear, or branched having from 14 to 22 carbon atoms. 11. The process according to claim 10, wherein the fatty alcohol is one selected from the group consisting of myristyl alcohol, cetyl alcohol, stearyl alcohol, butyl alcohol, behenyl alcohol, oleyl alcohol and mixtures thereof. 12. The process according to claim 11, wherein the fatty alcohol is a mixture of butyl alcohol and behenyl alcohol. The method of claim 9, wherein the polyol is selected from the group consisting of glycerin, propylene glycol, dipropylene glycol, 1,3-butyleneglycol, polyethylene glycol, propanediol, pentylene glycol, sorbitol, Diol or isoprene glycol. [Claim 11] The cosmetic composition according to claim 9,
i) a top D comprising 3 to 10% by weight of water, 5 to 20% by weight of polyol and 0.05 to 2% by weight of sodium diaramydoglutamide lysine,
Ii) an oil phase comprising 10 to 20% by weight of oil and 1 to 10% by weight of fatty alcohol,
Iii) 3 to 10% by weight of polyol and water
&Lt; / RTI &gt;

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