KR20130055069A - O/w emulsion having recrystallized particle and cosmetic composition comprising thereof - Google Patents

Abstract

PURPOSE: An oil-in-water emulsion composition is provided to ensure luxurious appearance and visual satisfaction and to enhance marketability as a cosmetic product. CONSTITUTION: An oil-in-water emulsion composition contains: an aqueous part containing 0.01-3.0 wt% of lecithin emulsifier, 0.01-1.0 wt% of thickener, and remaining amount of water; and an oil part of a recrystalline particle containing 1-10 wt% of pentaerythrityl tetrastearate wax and 1-10 wt% of oil. The lecithin is selected from a group consisting of phosphatidylcholine, hydrogen-added lecithin, unsaturated lecithin, lyso lecithin, saturated lecithin, derived from soybean or egg yolk, and a combination thereof. A method for preparing the oil-in-water emulsion composition comprises: a step of mixing the emulsifier, the thickener, and purified water and preparing the aqueous part; a step of mixing the wax and oil and preparing the oil part; a step of adding the oil part to the aqueous part; and a step of cooling the mixture. A cosmetic composition contains the oil-in-water emulsion composition.

Description

Oil-in-water emulsion composition having recrystallized particles and cosmetic composition comprising same {O / W Emulsion having recrystallized particle and Cosmetic composition comprising girlfriend}

The present invention relates to an oil-in-water emulsified composition having recrystallized particles present in a crystalline state in an emulsified state and giving a user visual satisfaction, and a cosmetic composition comprising the same.

Changes in cosmetic ingredients are accentuating the user's appetite for purchase using natural ingredients and natural ingredients. In the case of cosmetic ingredients, water-soluble ingredients, oil-soluble ingredients, powders and active ingredients are mixed in order to moisturize and protect skin and maintain skin health, and about 10 to 50 kinds of raw materials are used to manufacture a single product.

In particular, the cosmetics industry is a highly competitive industry and is growing fast as there are many competitors. With this growth, suppliers or manufacturers need to express the characteristics of the products clearly.

Recently, the development of cosmetics is a trend that gives a unique appearance or differentiated feeling different from the existing ones, and develops and introduces ingredients that can be immediately felt as soon as applied to the skin. In addition, the sense of fun as well as the look and feel of the product play a decisive role when the consumer selects the product to purchase.

As an example, Korean Patent Publication No. 2006-0113050 proposes a cosmetic composition of a formulation similar to fresh cream, and mentions that such a composition can provide a new and enjoyable consumption experience to consumers.

In addition, the Republic of Korea Patent Publication No. 2007-0106115 proposes a washable cleansing cosmetic composition having elasticity, the composition can be easily washed off with water after use without irritation to the skin and has elasticity to give a sense of fun in appearance It is starting.

Republic of Korea Patent Publication No. 2006-0113050 Republic of Korea Patent Publication No. 2007-0106115

Accordingly, the present invention has a multi-faceted study to produce a novel cosmetic product that gives a luxurious feeling, has a unique appearance, differentiated usability and increase the consumer's desire to buy, recrystallization using the recrystallization characteristics of the wax An oil-in-water emulsion composition with particles was prepared.

Accordingly, an object of the present invention is to provide an oil-in-water emulsion composition having recrystallized particles and a cosmetic composition comprising the same.

In order to achieve the above object, the present invention is such that the sum of the total composition is 100% by weight,

(a) 0.01 to 3.0% by weight of lecithin emulsifier,

     (Ii) 0.01 to 1.0 wt% thickener, and

(Iii) an aqueous phase containing water as the remainder, and

(b) 1 to 10% by weight of (iii) pentaerythryl tetrastearate wax, and

    (Ii) An oil-in-water emulsified composition comprising an oil phase portion of recrystallized particles containing 1 to 10% by weight of oil is provided.

The present invention also provides a cosmetic composition comprising an oil-in-water emulsion composition having the recrystallized particles.

The oil-in-water emulsion composition according to the present invention has a luxurious appearance with recrystallized particles to provide a visual satisfaction to the user, and at the same time, when used on the skin, the crystal naturally melts and absorbs into the skin as a cosmetic product. It can improve the marketability.

Figure 1 (a) is an emulsion composition having the recrystallized particles prepared in Example 1, (b) is a photograph showing an emulsion composition having the recrystallized particles prepared in Example 2.

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

The oil-in-water emulsion composition having the recrystallized particles according to the present invention is present in a crystalline state in an emulsified state to provide visual satisfaction to a user, and at the same time, when used in the skin, the crystal naturally melts and absorbs into the skin.

The recrystallized particles are due to the wax component in the oil phase portion of the oil-in-water emulsion composition, and are present in a homogeneously mixed state during manufacture, and then converted to recrystallized particle states by cooling. At this time, the wax exists in the oil phase in the oil-in-water emulsion composition uniformly, and in order to form a stable emulsion composition with the water phase, lecithin and thickener are used as an emulsifier in the composition of the water phase.

Preferably, the oil-in-water emulsion composition according to the present invention is such that the sum of the total composition satisfies 100% by weight,

(a) 0.01 to 3.0% by weight of lecithin emulsifier,

     (Ii) 0.01 to 1.0 wt% thickener, and

(Iii) an aqueous phase containing water as the remainder, and

(b) 1 to 10% by weight of (iii) pentaerythryl tetrastearate wax, and

    (Ii) the oil phase part of recrystallized particle | grains containing 1-10 weight% of oil is included.

As is known, lecithin is extracted from natural substances such as soybean, peanut, corn, egg yolk, and the like, as a natural emulsifier, which has low skin irritation, stability, and effectiveness. In addition, since the structure is similar to a biological membrane, it is very safe for the skin as compared to a general emulsifier, and in addition to its function as an emulsifier, it has a molecular structure that can have 15 to 25 molecules of water, that is, a water moisturizing function. You can increase it.

The lecithin used in the present invention does not specify the kind thereof, and any kind of lecithin known in the art may be used. For example, phosphatidylcholine, hydrogenated lecithin, unsaturated lecithin, Lyso lecithin, naturally derived saturated lecithin extracted from soybean or egg yolk (23 to 95% by weight of phosphatidylcholine, 20% by weight or less of phosphatidylethanolamine) Is preferably used.

The content of such lecithin is used in 0.01 to 3.0% by weight in the total composition. If the content is less than the above range, it is not emulsified properly, so that the stability is not good. On the contrary, if the content is more than the above content, recrystallized particles do not form, so it is suitably used within the above range.

Thickeners are used to control the viscosity of the cosmetics after emulsification of the oil phase and to compensate for the stability due to the fluidity of the lecithin stabilized recrystallized wax.

The build-up agent that can be used is not particularly limited in the present invention, and any of those conventionally used in this field can be used. Representative examples include sodium acrylate copolymers, carbomers, crosslinked or non-crosslinked acrylic acid polymers, especially polyacrylic acids crosslinked with a polyfunctional agent such as the product "CARBOPOL" available from GOODRICH, cellulose, derivatives such as methylcellulose, A mixture of methylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, carboxymethylcellulose, sodium salt of carboxymethylcellulose, cetylstearyl alcohol, oxyethylenated cetylstearyl alcohol containing 33 moles of ethylene oxide, , Xanthan gum, and combinations thereof.

The content of the thickener is used in the total composition of 0.01 to 1.0% by weight, if the content is less than the above range, it is difficult to maintain the uniformly dispersed state of the wax recrystallized due to lack of viscosity of the cosmetic, on the contrary, the above range Exceeding the above causes a problem that is difficult to apply as a formulation due to excessive viscosity rise, so it is appropriately used within the above range.

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

By wax is meant a lipophilic compound that is solid at room temperature (25 ° C.), undergoes a reversible solid / liquid state change, and whose melting point is at least 30 ° C. and may be at most 120 ° C. By changing the wax to a liquid state (melting), it is possible to make it miscible with the oil present and to form a micro homogeneous mixture, but recrystallization of the wax in the oil of the mixture when the temperature of the mixture is returned to room temperature Angry

Although it does not specifically limit in this invention with the kind of said wax, It is preferable to use pentaerythritol tetrastearate excellent in recrystallization characteristic.

The content of such wax is used in the total composition of 1 to 10% by weight, and if the content is less than the above range, it is insufficient to give visual satisfaction by the recrystallized wax. Since the problem that the stability of an emulsion composition falls significantly will arise, it uses suitably within the said range.

The oil is not particularly limited in the present invention, and any oil conventionally used in this field is possible. Typically, the oil may be an oil commonly used in the art so as to dissolve the wax sufficiently. Typically, hydrocarbon-based oils including polydecene and paraffin oil; Ester synthetic oils including cetylethylhexanoate, glyceryl trioctanoate, octyldodecyl myristate, isopropyl palmitate, isopropyl myristate and octyl palmitate; Silicone oils including cyclomethicone and dimethicone; Animal oil; Vegetable oils including mango butter, shea butter, copoa seed seed butter, macadamia seed oil; Ethoxylated alkyl ester oils; cholesterol; Cholesteryl sulfate; Phytosphingosine; Sphingoidoid lipids; One selected from the group consisting of C10 to C40 fatty alcohols such as batyl alcohol, behenyl alcohol, cetostearyl alcohol, cetyl alcohol, stearyl alcohol, caprylic / capric triglyceride, ceramide and mixtures thereof can be used. .

The oil is used in an amount of 1 to 10% by weight in the total composition, and if the content is less than the above range, the wax cannot be effectively dissolved. Conversely, if it exceeds the above range, the dispersion stability of the oil-in-water emulsion composition is lowered. Therefore, it uses suitably within the said range.

In addition, additives such as water-soluble / usable physiologically active ingredients, moisturizing agents, preservatives, pH adjusting agents, fatty acids, emulsifiers, surfactants, antioxidants, ultraviolet screening agents, pigments, dyes, fragrances and stabilizers May be further added, and the kind and content thereof may be appropriately selected by those skilled in the art.

Preferably, a water-soluble physiologically active ingredient and a moisturizing agent and an oil-soluble physiologically active ingredient are contained in the upper part of the water.

The water-soluble and oil-soluble physiologically active ingredients are not particularly limited in the present invention, and all known active ingredients may be used. For example, as a physiologically active ingredient having a whitening effect, an oil soluble ingredient including an oil soluble licorice, ethyl ascorbyl ether,? -Bisabolol and the like is possible. In addition, as an active ingredient having a wrinkle-reducing effect, an oil-soluble ingredient such as retinol and derivatives thereof (e.g., retinyl palmitate), adenosine and the like can be used. These water-soluble or oil-soluble physiologically active ingredients are used in an amount of 0 to 10.0% by weight, preferably 0.001 to 10.0% by weight, in the whole composition.

Moisturizing agents which can be used include polyhydric alcohols such as glycerin, erythritol, xylitol, maltitol glycerin, propylene glycol, 1,3-butylene glycol, sorbitol, polyglycerol, polyethylene glycol, 1,2-pentanediol, and isoprene glycol; Ingredients such as amino acids, sodium lactate, sodium pyrrolidone carboxylate, xyloglucan, quince seed, carrageenan, pectin, met, cranlan, galactan, delmantan sulfate, glycoken, keratan sulfate, chondroitin, mucoy Tin Sulfate, Keratosulfate, Chondroitin, Mucoitin Sulfate, Keratosulfate, Locust Bean Gum, Succinoglucan, Caronym Acid, Hyaluronic Acid, Heparan Sulfate, Sodium Hyaluronate, Collagen, Mucopolysaccharide, Chondroitin Water-soluble high molecular materials which are sulfuric acid; Silicones which are dimethylpolysiloxane and methylphenylsiloxane; Culture supernatants which are lactic acid bacteria and bifidus bacteria; And one selected from the group consisting of a combination thereof. Such moisturizers are used in the range of 0-15.0% by weight, preferably 0.5-10.0% by weight in the total composition.

The manufacturing method of the oil-in-water emulsion composition which concerns on this invention is not specifically limited, The emulsification method used normally can be used.

Specifically,

S1) preparing an aqueous phase by mixing an emulsifier, a thickener and purified water;

S2) mixing the wax and oil to prepare an oil phase;

S3) adding an oil phase to the water and mixing the oil phase; And

S4) to prepare through the step of cooling.

The mixing process of S1), S2), and S3) is performed in a vacuum emulsification tank capable of temperature control and stirring by a conventional method, and stirring and heating are performed as necessary.

For example, the water phase is heated to 50 to 80 캜, preferably 65 to 75 캜, and the oil phase is heated to 50 to 80 캜, preferably 65 to 75 캜 to sufficiently dissolve other components in the oil .

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 ° C., recrystallization of the emulsified particles occurs.

The oil-in-water emulsion composition prepared by the above method has a structure in which recrystallized particles are dispersed, as shown in FIGS. 1 and 2, to give a user visual satisfaction.

At this time, the size of the recrystallized particles may be formed according to the content of the oil phase portion, the size of the recrystallized particles increases as the content of the oil phase portion increases. Preferably, the size of the recrystallized particles has a level of 0.01 to 3.0 mm for visual satisfaction and dispersion stability, and for this particle size, the oil phase in the total oil-in-water emulsion composition is 2 to 20% by weight, preferably 5 to 5%. 10 wt% is satisfied.

The oil-in-water emulsion composition prepared through these steps can be used as a cosmetic product having various formulations. Preferably it may be a formulation such as cream, lotion, gel, milk, balm, more preferably used as a cream formulation. The massage cosmetic composition of such a formulation can be used for body skin care, facial skin care, baby care, after-care, whitening care, anticellulite care, cleansing, etc. , Massage creams, essences, eye creams, cleansing creams, cleansing foams, cleansing water, packs, sprays, powders or lipsticks.

In addition, the compositions of each formulation may contain various bases and additives necessary for formulation of the formulation, and may contain non-ionic surfactants, silicone polymers, extender pigments, flavorings, preservatives, But are not limited to, disinfectants, oxidative stabilizers, organic solvents, ionic or nonionic thickeners, plasticizers, antioxidants, free radical scavengers, opacifiers, stabilizers, emollients, silicones, A preservative, a surfactant, an anti-inflammatory agent, a substance P antagonist, a filler, a polymer, a propellant, a basicizing or acidifying agent, or a coloring agent.

[Example]

Hereinafter, the present invention will be described in detail through examples. The examples are intended to illustrate the invention in more detail and the scope of the invention is not limited to these examples.

( Example  And Comparative example ) Oil oil  Emulsifying Composition

To prepare an oil-in-water emulsion composition according to the method shown below in the composition of Table 1.

First, purified water was added to a mixer and warmed to 70 ° C., and lecithin and the remaining water phase composition were added thereto, followed by stirring at 70 ° C. to completely dissolve the water phase part.

Next, the oil was added to a separate mixer, heated to 70 ° C., and the remaining oil phase composition was added thereto, followed by stirring at 70 ° C. to completely dissolve the oil phase part.

Subsequently, the oil phase was added to the prepared water phase and emulsified using a homo mixer for 5 minutes at 3000 rpm, and then cooled to 25 ° C. to prepare an oil-in-water emulsion composition having recrystallized particles.

Composition (% by weight) Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Number
Prize
part solvent Purified water TO 100 TO 100 TO 100 TO 100 TO 100 TO 100 TO 100 Chelating agent Disodium EDTA 0.02 0.02 0.02 0.02 0.02 0.02 0.02 antiseptic Methyl paraben 0.20 0.20 0.20 0.20 0.20 0.20 0.20 Moisturizer glycerin 5.00 5.00 5.00 5.00 5.00 5.00 5.00 Emulsifier Lecithin 0.50 0.50 0.50 0.50 - - - Thickener Sodium acrylate
Copolymer 0.50 0.50 0.50 0.50 0.50 0.50 0.50 U
Prize
part Wax Pentaerythritol tetrastearate 3.00 5.00 - - - - - Cetearyl alcohol - - 3.00 - - - - Stearic acid - - - 3.00 - - - Emulsifier Glyceryl Stearate Fiji 100 Stearate - - - - 0.5 - - Polyglyceryl 3-methylglucose distearate - - - - - 0.5 - C14-22 alcohol, C12-C20 alkyl glucoside - - - - - - 0.5 oil Cetyl ethyl hexanoate 3.00 5.00 3.00 3.00 3.00 3.00 3.00 antiseptic Profile paraben 0.10 0.10 0.10 0.10 0.10 0.10 0.10

( Experimental Example  1) Size comparison of recrystallized particles

The oil-in-water emulsion compositions prepared in Examples 1 and 2 were measured by photographs, and the results obtained are shown in FIG. 1.

Figure 1 (a) is an oil-in-water emulsion composition prepared in Example 1, (b) is a photograph showing the oil-in-water emulsion composition prepared in Example 2. Referring to Figure 1, it can be seen that the particle size of the composition of Example 2 using 10% by weight compared to the composition of Example 1 using 6% by weight of the oil phase.

( Experimental Example  2) Recrystallization Measurement According to Wax Type

Experiments were carried out to confirm recrystallization according to the wax change of the oil-in-water emulsion compositions prepared in Example 1 and Comparative Examples 1 and 2. The results obtained at this time are shown in Table 2 below.

Example 1 Comparative Example 1 Comparative Example 2 Recrystallized particle formation ○ × ×

Referring to Table 2, the recrystallized particles can be formed according to the wax type, it can be seen that the composition of Comparative Example 1 using the cetearyl alcohol and Comparative Example 2 using the stearic acid does not form the recrystallized particles. .

( Experimental Example  3) Recrystallization Measurement According to Emulsifier Type

Experiments were carried out to determine the recrystallization according to the emulsifier change of the oil-in-water emulsion composition prepared in Example 1 and Comparative Examples 3 to 5. The results obtained at this time are shown in Table 3 below.

Example 1 Comparative Example 3 Comparative Example 4 Comparative Example 5 Recrystallized particle formation ○ × × ×

Referring to Table 3, it can be seen that the type and use of the emulsifier does not affect the recrystallized particle formation.

Oil-in-water emulsion composition according to the invention can be used as a cosmetic raw material.

Claims (8)

So that the sum of the total compositions satisfies 100% by weight,
(a) 0.01 to 3.0% by weight of lecithin emulsifier,
(Ii) 0.01 to 1.0 wt% thickener, and
(Iii) an aqueous phase containing water as the remainder, and
(b) 1 to 10% by weight of (iii) pentaerythryl tetrastearate wax, and
(Ii) The oil-in-water emulsion composition containing the oil phase part of the recrystallized particle containing 1-10 weight% of oil. The method of claim 1, wherein the lecithin is selected from the group consisting of phosphatidylcholine, hydrogenated lecithin, unsaturated lecithin, Lyso lecithin, naturally occurring saturated lecithin extracted from soybean or egg yolk, and combinations thereof. Oil-in-water emulsion composition comprising. The method of claim 1 wherein the thickener is sodium acrylate copolymer, carbomer, crosslinked or uncrosslinked acrylic acid polymer, crosslinked polyacrylic acid, methylcellulose, hydroxymethylcellulose, hydroxyethyl cellulose, hydroxypropyl methylcellulose, 1 selected from the group consisting of carboxymethyl cellulose, sodium salt of carboxymethyl cellulose, cetylstearyl alcohol, a mixture of oxyethylenated cetylstearyl alcohol containing 33 moles of ethylene oxide, guar gum, xanthan gum, and combinations thereof Oil-in-water emulsion composition comprising a species. The method of claim 1, wherein the oil is a hydrocarbon-based oil including polydecene and paraffin oil; Ester synthetic oils including cetylethylhexanoate, glyceryl trioctanoate, octyldodecyl myristate, isopropyl palmitate, isopropyl myristate and octyl palmitate; Silicone oils including cyclomethicone and dimethicone; Animal oil; Vegetable oils including mango butter, shea butter, copoa seed seed butter, macadamia seed oil; Ethoxylated alkyl ester oils; cholesterol; Cholesteryl sulfate; Phytosphingosine; Sphingoidoid lipids; Batyl alcohol, behenyl alcohol, cetostearyl alcohol, C10 to C40 fatty alcohols including cetyl alcohol and stearyl alcohol, caprylic / capric triglycerides, ceramides and mixtures thereof Oil-in-water emulsion composition. The oil-in-water emulsion composition according to claim 1, wherein the recrystallized oil-in-water emulsion composition has a structure in which recrystallized particles of 0.01 to 3.0 mm are dispersed. S1) preparing an aqueous phase by mixing an emulsifier, a thickener and purified water;
S2) mixing the wax and oil to prepare an oil phase;
S3) mixing by adding an oil phase to the water phase; And
S4) A method for preparing an oil-in-water emulsion composition according to claim 1, which is prepared through cooling. A cosmetic composition comprising an oil-in-water emulsion composition having the recrystallized particles of claim 1. The cosmetic composition according to claim 7, wherein the cosmetic composition is a cosmetic composition selected from soft cosmetics, nutrient cosmetics, lotions, creams, packs, gels, patches, or sprays (mist), lipsticks, makeup bases, or foundations. Cosmetic composition characterized in that.

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