KR102051058B1 - Ascorbic acid disperstion and cosmetic composition containing the same - Google Patents

Abstract

The present invention relates to an ascorbic acid dispersion dispersed with cetyl ethylhexanoate, hexyldecyl ethylhexanoate, and tocopheryl acetate, and a cosmetic composition of a stick or balm type in an oil/wax form containing the same. The present invention has an advantage of preserving a high content of ascorbic acid for long time by producing ascorbic acid in a dispersion form. The present invention is able to suppress various side effects by separating ascorbic acid from water-soluble components existing in the cosmetic composition when used by dispersing ascorbic acid in oil and adding the dispersion to the cosmetic composition. Therefore, the cosmetic composition by the present invention is provided to have little change in formulation ultimately.

Description

Ascorbic Acid Dispersion and Cosmetic Composition Containing the Same

The present invention relates to an ascorbic acid dispersion and a cosmetic composition containing the same, more specifically, cetyl ethylhexanoate, hexyldecylethylhexanoate, tocopheryl acetate It relates to an ascorbic acid dispersion dispersed in an oil containing (tocopheryl acetate) and a cosmetic composition of the stick or balm type on the oil / wax containing the same.

The skin directly receives external stimuli and protects the human body from the outside while controlling various physiological functions to maintain the health and elasticity of the skin. Various functional cosmetics for the skin are being developed, and recently, as women's desire for the function of cosmetics is increased, not only the clean and aesthetic functions, which are the basic functions of cosmetics, but also the effect of whitening to bright and white skin, improving and suppressing wrinkles of the skin, etc. Highly functional products with high performance are being developed.

On the other hand, cosmetic compositions using ascorbic acid (Ascorbic acid, vitamin C) that can exhibit high functionality having a skin whitening effect, wrinkle improvement and suppression effect of the skin is used. Ascorbic acid improves immune function, promotes collagen production, and antioxidants, and can exert anti-aging and whitening effects on the skin.

However, ascorbic acid reacts sensitively to the external environment such as air, especially oxygen, heat, and light, which are important factors affecting the instability of aqueous solution, and is easily decomposed by oxidation. There is a problem of causing damage to the quality of the cosmetic composition. Therefore, it is necessary to develop a cosmetic composition to which a high content of ascorbic acid is excellent in skin whitening effect and anti-aging effect.

Republic of Korea Patent Publication No. 10-2010-0033729 (published: 2010.03.31) relates to a cosmetic composition containing N-acetylglucosamine and vitamin C, including N-acetylglucosamine and vitamin C as an active ingredient The anti-aging cosmetic composition having the synergistic effect of moisturizing and wrinkle improvement is described.

The present invention adds a high content of ascorbic acid to a cosmetic composition by dispersing ascorbic acid in cetyl ethylhexanoate, hexyldecyl ethylhexanoate, and tocopheryl acetate. Even if it is to maintain the stability of ascorbic acid is excellent to develop and provide an oil / wax-like stick and balm type cosmetic composition that can exert an excellent skin whitening and anti-aging effect.

Ascorbic acid powder is dispersed in an oil comprising cetyl ethylhexanoate, hexyldecyl ethylhexanoate and tocopheryl acetate. Provide an acid dispersion.

In the ascorbic acid dispersion of the present invention, the ascorbic acid dispersion is preferably 60 to 70% by weight of ascorbic acid powder, 15 to 20% by weight of cetyl ethylhexanoate, hexyldecylethylhexa 14.5-20.5 wt% of hexyldecyl ethylhexanoate, 0.1-0.5 wt% of tocopheryl acetate, and mixed ascorbic acid powder with cetyl ethylhexanoate, hexyldecylethylhexanoate ethylhexanoate) and tocopheryl acetate may be prepared by dispersing in an oil including tocopheryl acetate.

In the ascorbic acid dispersion of the present invention, the dispersion may be performed by homogenization, preferably by sonication and grinding for 30 minutes at 40 ° C.

In the ascorbic acid dispersion of the present invention, it is preferable that the ascorbic acid powder is preferably 5 to 20 micrometers in size by grinding with an air jet mill.

On the other hand, the present invention provides an ascorbic acid-containing cosmetic composition comprising ascorbic acid dispersion, solid oil component, ester compound, higher alcohol, pigment, solid powder and liquid oil component of the present invention.

Ascorbic acid-containing cosmetic composition of the present invention, preferably ascorbic acid dispersion 10 to 50% by weight, solid oil component 10 to 30% by weight, ester compound 10 or more to 30% by weight relative to the total weight , Higher alcohol 0 to 5% by weight, pigment 0 to 5 to 5% by weight, solid phase powder of 0 to 5% by weight and the residual amount of the liquid oil component is preferable.

The ascorbic acid containing cosmetic composition of the present invention may preferably be of stick and balm type.

The present invention has the advantage of long-term preservation of high content of ascorbic acid by preparing ascorbic acid in the form of a dispersion. In other words, by dispersing the ascorbic acid in the oil, when used in addition to the cosmetic composition, the water-soluble component and the ascorbic acid present in the cosmetic composition can be isolated, it is possible to suppress various side reactions. Therefore, it is ultimately possible to provide a cosmetic composition with little change in formulation.

1 is a diagram showing a process of making an ascorbic acid dispersion of the present invention.
Figure 2 is a photograph showing the balm type (left) and stick type (right) cosmetic composition containing the ascorbic acid dispersion of the present invention.

Ascorbic acid powder is dispersed in an oil comprising cetyl ethylhexanoate, hexyldecyl ethylhexanoate and tocopheryl acetate. Provide an acid dispersion.

Ascorbic acid used in the present invention is also called vitamin C as one of the water-soluble vitamins. Ascorbic Acid enhances the body's immune function, and when applied to the skin, promotes the production of collagen, a component of cartilage, capillaries, and muscles, and destroys chemicals caused by UV rays penetrating the skin. Role. In addition, antioxidants are known to be effective in inhibiting the action of free radicals to prevent wrinkles and keep skin healthy, and for treating wounded skin tissues, suppressing allergic reactions, inhibiting melanin formation, and the like.

However, ascorbic acid reacts sensitively to the external environment such as air, especially oxygen, heat, and light, which are important factors affecting instability of aqueous phase, and is easily decomposed by oxidation, and easily reacts with other components to cause unpleasant or discoloration. It causes a problem that causes a problem that undermines the quality aptitude of the cosmetic composition.

Accordingly, the present invention is to solve such problems to provide an ascorbic acid that can maintain stability in cosmetic formulations for a long time, as part of the ascorbic acid powder, cetyl ethylhexanoate, hexyldecylethyl It is to provide an ascorbic acid dispersion, which is dispersed in an oil containing hexanoate (hexyldecyl ethylhexanoate) and tocopheryl acetate.

In the present invention, an oil including cetyl ethylhexanoate, hexyldecyl ethylhexanoate and tocopheryl acetate is used as a dispersion medium. Preferably, a solution consisting only of these three oils can be used as the dispersion medium.

Cetyl ethyl hexanoate is an ester compound of cetyl alcohol and 2-ethylhexanoic acid (octanoic acid), and is mainly used as a material for cosmetics and hair conditioners. It is known to play a role of softening the damaged parts by lubricating function, dissolving functional ingredients to increase percutaneous absorption of the ingredients, and softening and smoothing skin texture.

Hexyldecyl ethylhexanoate is an ester compound of hexyldecanol and 2-ethylhexanoic acid and is used as a skin softener and a water vapor barrier.

Tocopheryl acetate is a fat-soluble compound, also called vitamin E acetate, and is mainly used as a raw material for skin-related products such as skin creams. It is used as an alternative to pure tocopherol, and is known to have a role of protecting skin from harmful oxygen and inhibiting oxidation of unsaturated fatty acids constituting cell membranes.

It was confirmed through the present invention that when the ascorbic acid was dispersed in the three components (cetylethylhexanoate, hexyldecylethylhexanoate, tocopheryl acetate), it can be stably stored for a long time. In particular, it was possible to completely isolate the ascorbic acid from water in an aqueous solution to prevent the ascorbic acid from being decomposed or reacted with other components.

Specifically, when cetylethylhexanoate and hexyldecylethylhexanoate were mixed and used, dispersion, feeling and stability were the best, and when tocopheryl acetate was added, stability was improved at high and low temperatures. In particular, 60 to 70% by weight of ascorbic acid powder, 15 to 20% by weight of cetyl ethylhexanoate, 14.5 to 20.5% by weight of hexyldecyl ethylhexanoate, tocopheryl acetate When used in an amount of 0.5 wt%, dispersion, usability and stability were better.

Although the present inventors conducted experiments with raw materials used in cosmetics such as mineral oil, caprylic / capric glyceride, diisostearyl maleate, and silicone in addition to the three components of the present invention, oil and ascorbic acid Problems occurred in stability and uniform dispersion, such as separation.

In the ascorbic acid dispersion of the present invention, the ascorbic acid dispersion is preferably 60 to 70% by weight of ascorbic acid powder, 15 to 20% by weight of cetyl ethylhexanoate, hexyldecylethylhexa 14.5-20.5 wt% of hexyldecyl ethylhexanoate, 0.1-0.5 wt% of tocopheryl acetate, and mixed ascorbic acid powder with cetyl ethylhexanoate, hexyldecylethylhexanoate It is preferably prepared by dispersing in an oil containing ethylhexanoate) and tocopheryl acetate. Ascorbic acid dispersions of the most preferred form (maintaining high stability) at such blending ratios can be prepared.

In the ascorbic acid dispersion of the present invention, the dispersion may be performed by homogenization, preferably by sonication and grinding for 30 minutes at 40 ° C. The reason for the sonication is to homogeneously distribute the ascorbic acid in the oil. At this time, the ascorbic acid may be subjected to a more pulverizing process to prevent the agglomeration, thereby homogenizing the ascorbic acid even more uniformly in the oil. At this time, the pulverization may be preferably carried out through a three-stage roll process well known in the art.

In the ascorbic acid dispersion of the present invention, the ascorbic acid powder is preferably pulverized with an air jet mill (Air Jet Mill) of 5 to 20 micrometers in size. Ascorbic acid powders of this size were best dispersed. In addition, it is possible to prevent heat denaturation by minimizing the heat applied to the ascorbic acid through the air jet mill grinding rather than normal grinding.

On the other hand, the present invention provides an ascorbic acid-containing cosmetic composition comprising the ascorbic acid dispersion, solid oil component, ester compound, higher alcohol, pigment, solid powder and liquid oil component of the present invention.

The cosmetic composition, preferably ascorbic acid dispersion 10 to 50% by weight, solid oil component 10 to 30% by weight, ester compound 10 or more to 30% by weight, higher alcohol 0 or more to the total weight, preferably It is preferable to contain 5 weight% or less, pigment | dye 0 or more and 5 weight% or less, solid phase powder 0 or more and 5 weight% or less, and a residual amount of liquid oil component.

When prepared in the above-described compounding ratio using the above components it can be preferably prepared in the stick or balm type

Stick type cosmetic composition generally has the principle that the contents are made in the form of a stick to rotate the container body, so that the contents protrude to make up using the same. In addition, the balm type cosmetic composition is a rigid formulation solidified by concentrating the oil and moisturizing ingredients, has the principle that can be used while melting the warmth of the hand. Stick and balm type cosmetic compositions have the advantage of being small and portable at any time. The stick or balm type cosmetic composition may differentiate hardness and usability by the difference in the content of wax and oil.

Moreover, the cosmetic composition of this invention can be used overlapping with other cosmetic compositions other than this invention. In addition, the cosmetic composition according to the present invention may be used according to a conventional method of use, and the number of times of use may vary depending on the skin condition or taste of the user.

Hereinafter, the present invention will be described in more detail in the following Examples and Experimental Examples. However, the scope of the present invention is not limited only to the following Examples and Experimental Examples, but includes all modifications of equivalent technical ideas.

Example 1 Preparation of Ascorbic Acid Dispersion

In this example, an ascorbic acid dispersion was prepared. Fixed 80-120 mesh size ascorbic acid powder, main pressure at 10.0 kgf / cm ² , ejector pressure 6.0 kgf / cm ² , liner pressure 4.0 kgf / cm ² , Screw feeder (screw feeder) is 10 rpm, agitator speed of 7 rpm conditions, using an Air Jet Mill was ground to a size of 10 micrometers, this ascorbic acid powder 60 ~ 70 %, Cetyl ethylhexanoate 15-20%, hexyldecyl ethylhexanoate 15-20%, tocopheryl acetate 0.1-0.5% at room temperature with azimixer at 800 rpm Mixed for 5 minutes. Thereafter, the ultrasonic wave was applied at 40 ° C. for 30 minutes, and the size of the particles was uniformly homogenized through three-stage grinding, and finally, an ascorbic acid dispersion was prepared. Specifically, the ascorbic acid dispersions of Examples 1-1 to 1-3 were prepared using the compositions shown in Table 1 below.

Raw material name (unit: weight part) Example 1-1 Example 1-2 Example 1-3 Ascorbic Acid 60 65 70 Cetylethylhexanoate 20 17.5 15 Hexyldecylethylhexanoate To 100 To 100 To 100 Tocopheryl Acetate 0.5 0.3 0.1

[Example 2: Preparation of the cosmetic composition comprising the ascorbic acid dispersion prepared in Example 1]

(1) Preparation of Stick Type Cosmetic Composition (Example 2-1)

Stick type cosmetic composition comprising the ascorbic acid dispersion is 10 to 30% by weight of the solid oil component, 10 to 30% by weight ester compound, 0 to 5% by weight higher alcohol, 10 to 50% by weight of the ascor It was prepared from a material comprising a big acid dispersion, 0-5% by weight of pigment and 0-5% by weight of solid phase powder and liquid oily component as the balance.

Solid oil component, ester compound, higher alcohol, liquid oil component were dissolved by heating up to 90 ℃, solid powder and pigment were added and dispersed at 1,200 rpm with an azimixer, and then added ascorbic acid dispersion at 80 ℃. 15 minutes at 1,200 rpm.

After confirming the mixing, a preservative, purified water, and aroma were added to the mixture, and the azimixer was mixed for 1,200 rpm for 30 seconds, followed by performing a homogenization process by crushing three rolls twice at room temperature. Specifically, Examples 2-1-1 to 2-1-3 were prepared using the composition shown in Table 2 below.

Raw material name (unit: weight part)
Example
2-1-1 Example
2-1-2 Example
2-1-3 Solid oil component Beads wax 5 2 2 Ceresin 13 8 6 Candelilla wax 5 3 6 Carnauba Wax 2 0.5 3 Ester compound Dipentaerythritol hexahydroxystearate / hexastearate / hexaloginate 7 5 2 Macadamia Seed Oil Polyglyceryl-6 Esters Behenate 3 2 One Polyglyceryl-2 Triisostearate 5 8 5 Diisostearyl maleate 11 13 8 Advanced Alcohol Cetyl alcohol 5 2 0 Liquid oily ingredient vegetable oil 12 10 8 Coconut oil 0.5 0.5 0.5 Sunflower Seed Oil To 100 To 100 To 100 Solid powder Mica 10 5 0 Pigment Yellow 4 One 0.5 0 Ascorbic Acid
Dispersion Ascorbic Acid Dispersion
(Example 1-2 above) 10 25 50 antiseptic antiseptic Quantity Quantity Quantity Purified water Purified water Quantity Quantity Quantity incense incense Quantity Quantity Quantity

(2) Preparation of Balm Type Cosmetic Composition (Example 2-2)

Balm type cosmetic composition comprising the ascorbic acid dispersion is 10 to 30% by weight of the solid oil component, 10 to 30% by weight of the ester compound, 0 to 5% by weight of higher alcohol, 10 to 50% by weight of the asco It was prepared from a material comprising a big acid dispersion, 0 to 5 wt% pigment and 0 to 5 wt% solid phase powder and the liquid oily component as the balance.

Solid oil component, ester compound, higher alcohol, liquid oil component is heated to 90 ℃ and dissolved, solid powder and pigment are added and dispersed at 1,200 rpm with an azimixer. Mix for 15 minutes at 1,200 rpm. After confirming the mixing, a preservative, purified water, and aroma were added to the azimixer 1,200 rpm for 30 seconds, and the homogenization process was performed by pulverizing three-stage rolls twice at room temperature. Specifically, Examples 2-2-1 to 2-2-3 were prepared using the composition shown in Table 3 below.

Raw material name (unit: weight part)
Example
2-2-1 Example
2-2-2 Example
2-2-3 Solid oil component Beads wax 3 2 2 Ceresin 6 5 6 Candelilla wax One 1.5 2 Carnauba Wax 0.2 0.2 0.5 Sarasu Sea Butter 2 1.5 One Ester compound Dipentaerythritol hexahydroxystearate / hexastearate / hexaloginate 7 5 3 Macadamia Seed Oil Polyglyceryl-6 Esters Behenate 4 2 2 Polyglyceryl
-2 triisostearate 8 7 5 Diisostearyl maleate 11 10 8 Advanced Alcohol Cetyl alcohol 5 2 0 Liquid oily ingredient vegetable oil 15 14 10 Coconut oil 0.5 0.5 0.5 Sunflower Seed Oil To 100 To 100 To 100 Solid powder Mica 10 5 0 Pigment Yellow 4 One 0.5 0 Ascorbic Acid
Dispersion Ascorbic Acid Dispersion
(Example 1-2 above) 10 25 50 antiseptic antiseptic Quantity Quantity Quantity Purified water Purified water Quantity Quantity Quantity incense incense Quantity Quantity Quantity

Experimental Example 1: Evaluation of the formulation stability of the cosmetic composition prepared in Example 2

In the present experimental example, to evaluate the formulation stability of the cosmetic composition prepared in Examples 2-1-2 and 2-2-2. As a comparative example, the stick (Comparative Example 2-1-2) and Balm (Comparative Example 2) prepared by the same prescription as in Examples 2-1-2 and 2-2-2 without dispersing the ascorbic acid in oil -2-2) was used.

In the experiment, physical properties were observed while storing the above Example 2-1-2, Example 2-2-2 cosmetic composition and Comparative Example 2-1-2, 2-2-2 cosmetic composition at 50 ° C.

As a result, the formulation of Example 2-1-2 and 2-2-2 cosmetic composition was completely maintained even after 60 days at 50 ° C., Comparative Examples 2-1-2 and 2-2-2 cosmetic composition The composition is 5 days ascorbic acid denatured Color change was observed after the passage.

Claims (7)

60 to 70% by weight of ascorbic acid powder, 15 to 20% by weight of cetyl ethylhexanoate, 14.5 to 20.5% by weight of hexyldecyl ethylhexanoate, 0.1 to 2 tocopheryl acetate After mixing 0.5% by weight, and homogenized through 30 minutes sonication and grinding at 40 ℃ to produce an ascorbic acid dispersion, characterized in that the ascorbic acid dispersion.
delete delete The method of claim 1,
The ascorbic acid powder,
Method for producing an ascorbic acid dispersion, characterized in that the size is 5 to 20 micrometers by grinding with an air jet mill.
A method for producing an ascorbic acid-containing cosmetic composition comprising an ascorbic acid dispersion, a solid oil component, an ester compound, a higher alcohol, a pigment, a solid powder, and a liquid oil component prepared by the method of claim 1.
The method of claim 5,
The cosmetic composition,
Ascorbic Acid dispersion 10 to 50% by weight, solid oil component 10 to 30% by weight, ester compound 10 to 30% by weight, higher alcohol 0 to 5 to 5% by weight, pigment 0 A method for producing an ascorbic acid-containing cosmetic composition, characterized in that it contains more than 5% by weight or more, solid phase powder 0 or more and 5% by weight or less, and a residual liquid oil component.
The method of claim 5,
The cosmetic composition,
Method for producing a cosmetic composition, characterized in that the stick and balm type.

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