KR20160117075A - Composition modifying a surface of gauze, and the method for stabilizing ceramide using the surface-modified gauze - Google Patents

Abstract

The present invention relates to a composition which modifies the surface of a gauze composed of cellulose to be smooth, and to a method for stabilizing ceramide using the gauze with the modified surface. More particularly, the composition modifies the surface of a gauze to be smooth enough to be suitable for applying on skin by using a proper combination of alcohol and ester-based oil. The method can effectively stabilize a ceramide component in a cosmetic material using the gauze having the surface modified according to the present invention.

Description

A composition for modifying the surface of a gauze and a method for stabilizing a ceramide by using a surface modified gauze.

The present invention relates to a composition for smoothly modifying the surface of gauze made of cellulose and a method for stabilizing ceramides using surface modified gauze, and more particularly, And a method of effectively stabilizing the ceramide material contained in the cosmetic material by using the gauze modified with the surface as described above.

Generally, the fibers are divided into short fibers, middle fibers, long fibers, and super long fibers. In the case of short fibers having a fiber length of 22 mm or less, the fibers are used for the non-woven cotton, And the middle fiber of 22 ~ 28mm is most used in domestic, and it is widely used for various kinds of fabrics including medical products. The main raw material of gauze is also middle fiber, which makes the material rough.

Such gauze used for medical use has been widely applied as a tool for use of cosmetics because it enhances the effect of cleansing or cleansing of skin, or as a supporter of natural packs.

However, due to the structural properties of short and medium fibers, the surface of the gauze is generally rough. Therefore, when gauze without surface modification is used, there is a problem that skin irritation occurs due to friction, and direct use of the gauze in the field of cosmetics is extremely limited.

Ceramide, on the other hand, is a component of the lipid of the skin, which helps improve moisturization and skin barrier when applied to the skin. Despite these advantages, due to the molecular structure which is easy to crystallize, there is a limitation in the amount of the substance used in actual cosmetics.

Korea Patent Publication No. 2013-0026401

It is therefore an object of the present invention to provide a composition capable of smoothly modifying the surface of a gauze composed of gauze, in particular cellulose, so that it can be effectively used when applying cosmetics to skin, in particular, applying cream.

It is another object of the present invention to provide a method for stably storing and maintaining ceramides contained in a cosmetic composition through hydrogen bonding by using gauzes composed of gauzes, particularly cellulose having a hydroxyl group, as a carrier.

It is another object of the present invention to provide a cosmetic method for stably applying a cosmetic composition containing ceramides to skin by using a cellulose gauze whose surface is modified.

In order to accomplish the above object, the present invention provides a process for producing a polyurethane foam, which comprises at least one alcohol selected from the group consisting of ethanol, hexanediol, glycerin, glycerol-20, butylene glycol, propylene glycol and dipropylene glycol; And at least one ester-based oil selected from the group consisting of isopropyl myristate, isopropyl palmitate, cetyl octanoate and myristyl myristate.

The present invention also provides a gauze for applying a cosmetic material whose surface has been modified using the composition.

The present invention also provides a method for stabilizing a ceramide contained in a cosmetic using the surface-modified gauze.

The composition of the present invention softens the rough surface of cellulosic gauze so that gauze can be used as a useful tool that does not irritate the skin when the cosmetic is applied to the skin and effectively stabilizes the ceramide contained in the cosmetic, It can help improve.

The present invention relates to a composition for surface modification of gauze, which is capable of softening the surface to provide gauze without irritation to the skin.

The composition of the present invention can be combined with an alcohol and an ester oil to control the hydrophilicity of the gauze and maximize the flexibility of the fiber. Further, by using these components in an optimal combination, it is possible to maximize the application and spreadability of the cosmetic.

The alcohol used in the composition of the present invention is not particularly limited as long as it is applicable to cosmetics, but it is preferably ethanol, hexanediol (e.g., 1,2-hexanediol), glycerin, glycerol- 20 (2,2 ', 2 "-propane-1,2,3-triyltrioxytriethanol), butylene glycol (for example, 1,3-butylene glycol, 1,2- Butylene glycol and the like), propylene glycol and dipropylene glycol, and preferably two or more. More preferably, the composition of the present invention comprises at least one monohydric alcohol selected from the group consisting of ethanol and glycereth-20; And at least one polyol selected from the group consisting of hexanediol, glycerin, butylene glycol, propylene glycol, and dipropylene glycol.

The alcohol used in the composition of the present invention is used in an amount of 0.1 to 45% by weight based on the total weight of the composition. If it is less than 0.1% by weight, satisfactory gauze softening effect and effective surface modification effect are difficult to obtain. If it is more than 45% by weight, adverse effects such as skin irritation or stickiness may occur.

When monohydric alcohols and polyols are both used, the monohydric alcohol is used in an amount of 0.5 to 15 wt% based on the total weight of the composition, and the polyol is preferably used in an amount of 0.1 to 30 wt%.

In addition, the composition of the present invention uses an ester-based oil to increase the modifying effect of the surface of the gauze to the oil-soluble group. The ester-based oil usable in the present invention is not particularly limited as long as it is applicable to cosmetics, but is preferably selected from the group consisting of isopropyl myristate, isopropyl palmitate, cetyl octanoate and myristyl myristate It is more than one kind.

The ester-based oil used in the composition of the present invention is used in an amount of 1 to 15% by weight based on the total weight of the composition. If it is less than 1% by weight, it is impossible to smoothly modify the lubricant on the surface of the gauze. If it exceeds 15% by weight, irritation occurs on the skin and long-term stability of the content becomes poor.

In addition, the composition of the present invention softens not only the surface of the gauze but also the fibers constituting the gauze, and also helps enhance the flexibility of the skin due to the use of a large amount of a moisturizing component such as a polyol.

The present invention may provide gauzes made of gauze, especially cellulose, that have been surface modified using the above compositions. Such modified gauzes can be used as cosmetic tools for applying cosmetics. Particularly, the surface-modified gauze according to the present invention is not limited to a wide range of formulations of the cosmetic material to be applied. However, when applying the cosmetic material for skin care, for example, a skin, lotion, essence, As shown in Fig.

In addition, although the shape of the gauze according to the present invention is not particularly limited, the gauze may not be a general sheet shape, and may be a shape having a thickness capable of effectively carrying a cream.

When the surface-modified gauze according to the present invention is used for applying a cosmetic composition, the skin care effect by the fine fibers of the gauze can be obtained and the skin irritation can be minimized as compared with the case of applying the cosmetic composition by hand .

In addition, when applying the cosmetic directly by hand, a considerable amount of cosmetic is absorbed into the hand. Similarly, cosmetic pads made of commonly used cotton, pulp, rayon, etc. also have the problem of absorbing a significant amount of cosmetic material. In addition, when a liquid formulation having no viscosity such as a lotion is applied, it can effectively function as a dispensing tool. However, when a formulation having viscosity such as emulsion, cream, or the like is to be applied, It does not work well.

On the other hand, since the surface-modified gauze according to the present invention does not directly absorb the cosmetic material, the amount of the cosmetic material absorbed by the hand or the cosmetic cotton is reduced when the cosmetic material is directly applied by hand or when the cosmetic cotton is used, You can help. In addition, a viscous formulation such as a cream can be effectively applied to the skin, and the cosmetic can be sufficiently absorbed.

The present invention relates to a method for stabilizing ceramides contained in a cosmetic, and more particularly, to a gauze, preferably a gauze made of cellulose, more preferably a composition for surface modification of the gauze, as a carrier capable of stably storing or maintaining ceramides To a method of using a surface modified gauze.

Specifically, the ceramide stabilization method of the present invention chemically stabilizes ceramides by restricting the migration of ceramides through strong hydrogen bonding between the hydroxyl groups in the cellulose and the hydroxyl groups of the ceramides and preventing crystallization of the ceramides. The superior stability of the ceramide can be realized as compared with the conventional method.

In addition,

1) to gauze, ceramide; And a cosmetic composition comprising a composition for surface modification of gauze comprising an alcohol and an ester-based oil to modify the surface of the gauze; And

2) contacting the gauze impregnated with the cosmetic composition to the skin to apply the cosmetic composition to the skin;

A cosmetic composition containing the ceramide-containing cosmetic composition.

The gauze used in step 1) is preferably gauze made of cellulose, and the composition for surface modification of gauzes containing alcohol and ester oil is as described above.

The stabilization of the ceramide is achieved through the hydrogen bonding between the hydroxyl group and the ceramide hydroxyl group present in the surface modified gauze.

According to the method of the present invention described above, ceramide present in the cosmetic composition can be effectively stabilized and contact between the face and the hand can be minimized during application of the cosmetic composition, so that it is possible to maintain the cleanliness of the facial skin .

Hereinafter, the constitution and effects of the present invention will be described in more detail with reference to test examples and formulation examples. However, these test examples and formulation examples are provided for illustrative purposes only for the sake of understanding of the present invention, and the scope and scope of the present invention are not limited by the following examples.

[Referential Example 1] Preparation of Examples and Comparative Examples

Example 1 and Comparative Example 1, which are compositions of cream formulations containing ceramides, were prepared according to the following production methods in the composition shown in the following Table 1 (unit: wt%). Here, Comparative Example 1 does not include an ester-based oil.

ingredient Example 1 Comparative Example 1 Ester oil Isopropyl palmitate 2 Trioctanoin 3.5 3.5 Ceramide Hydroxypropyl bis-palmitamide MEA One One cholesterol 0.5 0.5 Glyceryl stearate 4 4 Cetearyl alcohol 1.2 1.2 Sheer butter One One Cyclopentasiloxane 4.5 4.5 Trisiloxane One One water To 100 To 100 Disodium EDTA 0.05 0.05 Tromethamine 0.32 0.32 Alcohol glycerin 4 4 Alcohol Butylene glycol 8 8 Glyceryl caprylate 0.1 0.1 Alcohol 1,2-hexanediol 0.05 0.05 Carbomer 0.3 0.3 Spices 0.12 0.12 total 100 100

[Test Example 1] Long term stability test of ceramide cream impregnated in surface modified gauze

The long-term stability test of the ceramides according to the raw materials of the gauze modified with a composition in which an alcohol, a polyol, and an ester oil were appropriately combined was evaluated as follows.

5 g of each of the compositions of Example 1 and Comparative Example 1 was impregnated into gauzes made from urethane, cellulose, polyvinyl alcohol, cotton or nylon (Korea Iml Co., Ltd., Korea) Respectively. The results are shown in Table 2 below.

Gauze raw material Stability at 45 ℃ (1 month) Skin irritation / discoloration / degree of irritation Before reforming After modification Example 1 urethane Great Skin irritant Discoloration / outbreak Cellulose Great Skin irritant No discoloration / flushing occurs Polyvinyl alcohol detach Less skin irritation Outbreak if Gauze is messy Medium of skin irritation Discoloration occurs nylon Partial separation Medium of skin irritation Discoloration / outbreak Comparative Example 1 urethane detach Skin irritant Discoloration / outbreak Cellulose detach Skin irritant Discoloration / outbreak Polyvinyl alcohol detach Less skin irritation Discoloration / outbreak if Gauze is messy Medium of skin irritation Discoloration / outbreak nylon detach Medium of skin irritation Discoloration / outbreak

As shown in Table 2, in the case of Comparative Example 1, discoloration and removal occurred in all the gauzes after the composition was separated or modified.

When Example 1 was applied, there was a difference in the degree of stabilizing the ceramides effectively depending on the raw materials of gauze. Among them, the best one in terms of stability was identified as gauze made of urethane and cellulose.

However, due to the reaction with the raw material when the cosmetic containing ceramides is impregnated for a long period of time, the gauze made of urethane as a raw material causes discoloration and detachment in the item of discoloration and removal, It was judged that it was not suitable as a material for a carrier.

On the other hand, polyvinyl alcohol has a hydroxyl group like cellulose, which is expected to help stabilization through strong hydrogen bonding with ceramides. However, since the hydrophilic nature of the raw material itself is strong, the terminal groups are dissolved at high temperatures, It is difficult to implement.

Therefore, it was confirmed that the gauzes made of cellulose as a raw material were the best carriers for carrying ceramide-containing cosmetics in the stability test.

[Test Example 2] Experiment of surface modification of alcohols, sensation of use and stimulation

To evaluate the surface modifying effect, feel and sensation of cellulosic gauzes according to the type of alcohol, various alcohols as shown in Table 3 below were evaluated.

The alcohol shown in the following Table 2 was applied (amount of impregnation: 15% by weight) to gauzes purchased from the market (Korea Iml Co., Ltd., Korea). A panel of 10 participants assessed the effect of surface modification, feeling and feelings of irritation by bringing the gauze with alcohol into contact with the skin on the upper right side of the subject. Each item was rated 1 to 5, and the evaluation results are shown in Table 3 below.

Alcohol type Impregnation amount
(Unit: wt%) Surface modification effect Feeling Irritability ethanol 15% Great Excellent (refreshing feeling) Great 1,2-hexanediol 15% Great Excellent (yearly) Great Benzyl alcohol 15% usually Poor Great Lanolin alcohol 15% usually Poor usually Butyl alcohol 15% Poor Poor usually glycerin 15% Great Excellent (yearly) Great Glycereth-20 15% Great Excellent (yearly) Great Methylglucerase-20 15% usually Usually (moisture) Great Page-32 15% usually Usually (moisture) usually PPG-17.6 copolymer 15% usually usually usually 1,3-butylene glycol 15% Great Excellent (yearly) Great Propylene glycol 15% Great Usually (moisture) usually Dipropylene glycol 15% usually Usually (moisture) usually Pentylene glycol 15% Great Usually, usually

Table 3 shows that the alcohols used in the present invention exhibit the surface modification effect of gauze although there are differences in degree. However, when the gauze subjected to the surface modification treatment was applied to the skin according to the limited use of applying cosmetics, the feeling of use and the stimulation to the skin were checked together. As a result, all of the alcohols used in the present invention were excellent in the surface modifying effect, The stimulation was less.

[Experimental Example 3] Effect of surface modification according to ester oil, sensation in use, sensation of irritation

In order to investigate the effect of surface modification, feel and sensation of cellulose gauzes according to kinds of ester oil, various ester oils were evaluated as follows.

The ester-based oils shown in Table 4 below were applied to the cellulose gauzes commercially available from MITSUBISHI CO., LTD. (Korea) (unit: weight% of impregnated amount). Ten panelists evaluated the effect of surface modification, feel and feelings of stimulation by contacting the gauze with ester oil on the skin at the upper right side of the subject. Each item was rated 1 to 5, and the evaluation results are shown in Table 4 below.

Ester oil Impregnation amount
(Unit: wt%) Surface modification effect Feeling Irritability Ester oil Isopropyl myristate 0.5% usually - Great Isopropyl palmitate 0.5% usually - Great Cetyl octanoate 0.5% Great Poor usually Mystery Miri State 0.5% usually - usually

Referring to Table 4,

It has been confirmed that the effect of softening the surface is observed in most ester oils. However, when it is used excessively, the feeling of use is deteriorated and there is a restriction to use excess amount. Therefore, it is necessary to find the optimum combination with the alcohol component Respectively.

[Test Example 4] Experiment to confirm the synergistic effect by combination of alcohol and ester oil

In order to investigate the surface modifying effect, feel and feel of the cellulose gauze according to the combination of alcohol and ester oil, various combinations of alcohol and ester oil were evaluated as shown in Tables 5 and 6 below.

Alcohol and ester oil shown in Tables 5 and 6 were applied (amount of impregnation: 15% by weight) to commercially available cellulose gauzes (Korea Iml Co., Ltd., Korea). 10 panelists of the gauze applying alcohol and ester oil were contacted with the skin at the upper right part of the subject to evaluate the surface modification effect, feeling and feelings of stimulation, and the evaluation results are shown in Table 7 below.

Example Comparative Example One 2 3 One 2 3 4 5 6 7 Deionized water To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 1,2-hexanediol - - - - 15.00 - ethanol - 10.0 15.0 - 1.00 10.00 - 10.0 1.00 - Propylene glycol 0.1 - - - 10.0 - - - - - Dipropylene glycol - 15.0 - - - 10.0 - - - - Butylene glycol - - 30.0 10.0 - - - - - - glycerin - - - - - - - - 20.0 - Glycereth-20 0.5 - - - - - - 5.00 - 30.0 Isopropyl myristate 1.0 - - - - - - - - - Isopropyl palmitate - 5.0 - - - - - - - - Cetyl octanoate - - 15.0 - - - - - - - Mystery Miri State - - - - - - - - - -

Comparative Example 8 9 10 11 12 13 14 15 16 Deionized water To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 1,2-hexanediol - - ethanol - 10.0 10.0 15.0 1.00 10.0 10.0 15.0 Propylene glycol 5.0 Propanediol 5.0 Butylene glycol 5.0 5.0 glycerin 5.0 Glycereth-20 1.00 5.00 5.00 Isopropyl myristate 0.01 5.0 Isopropyl palmitate 20 Cetyl octanoate 30.0 Mystery Miri State 40.0

Feeling Stimuli (among the total subjects) Example 1 Soft gauze feeling No redness, no skin irritation Example 2 Has a yeast No redness, no skin irritation Example 3 Soft and flexible No redness, no skin irritation Comparative Example 1 Gauze exists rough feeling Skin flush immediately after use Comparative Example 2 Ineffective improvement of gauze Skin irritation in use Comparative Example 3 Ineffective improvement of gauze Skin irritation in use Comparative Example 4 Ineffective improvement of gauze Skin irritation in use Comparative Example 5 Have a little bit of anxiety Perceived local skin irritation Comparative Example 6 Have a little bit of anxiety Perceived local skin irritation Comparative Example 7 Have a little bit of anxiety Skin irritation in use Comparative Example 8 Have a little bit of anxiety Perceived local skin irritation Comparative Example 9 Have a little bit of anxiety Perceived local skin irritation Comparative Example 10 Have a little bit of anxiety Perceived local skin irritation Comparative Example 11 Have a little bit of anxiety Perceived local skin irritation Comparative Example 12 Have a little bit of anxiety Perceived local skin irritation Comparative Example 13 Have a little bit of anxiety Perceived local skin irritation Comparative Example 14 Have a little bit of anxiety Perceived local skin irritation Comparative Example 15 Have a little bit of anxiety Perceived local skin irritation Comparative Example 16 Have a little bit of anxiety Perceived local skin irritation

From the results shown in Table 7, it can be seen that the combination of the alcohol selected in Test Example 1 and the ester-based oil selected in Test Example 2 has a synergistic effect on the surface modifying effect and feeling and feeling of irritation of gauze. This indicates that when alcohol and ester oil alone are used alone, it is possible to improve the disadvantage of using a high content of the alcohol and the ester-based oil, thereby reducing the irritation.

Specifically, the compositions of Examples 1 to 3 and Comparative Examples 1 to 16 show that in the case of Examples 1 to 3 treated with an appropriate alcohol and ester oil to improve the surface of the gauze, the surface of the gauze was smoothly modified On the other hand, in the case of Comparative Examples 1 to 16 in which neither the alcohol nor the ester-based oil is contained, or the content of use exceeds the appropriate range, it can be confirmed that the degree of modification is weak.

In addition, it can be seen that Examples 2 and 3 treated with a composition containing a large amount of a polyol component among alcohols, in particular, are excellent in the modifying effect and greatly reduce skin irritation when used by surface modification. On the other hand, in the case of Comparative Examples 1 to 16, the surface of the gauze was not sufficiently modified, and it was found that the skin was irritated during use.

Claims (14)

At least one alcohol selected from the group consisting of ethanol, hexanediol, glycerin, glycerol-20, butylene glycol, propylene glycol and dipropylene glycol; And at least one ester-based oil selected from the group consisting of isopropyl myristate, isopropyl palmitate, cetyl octanoate and myristyl myristate. The composition for surface modification of gauze according to claim 1, wherein the gauze is made of cellulose. The composition for surface modification of gauze according to claim 1, wherein the alcohol is used in an amount of 0.1 to 45% by weight based on the total weight of the composition. The method of claim 1, wherein the composition comprises one or more monohydric alcohols selected from the group consisting of ethanol and glycereth-20; And at least one polyol selected from the group consisting of hexanediol, glycerin, butylene glycol, propylene glycol and dipropylene glycol. The composition for surface modification of gauze according to claim 4, wherein the alcohol is used in an amount of 0.5 to 15% by weight based on the total weight of the composition. The composition for surface modification of gauze according to claim 4, wherein the polyol is used in an amount of 0.1 to 30% by weight based on the total weight of the composition. The composition for surface modification of gauze according to claim 1, wherein the ester-based oil is used in an amount of 1 to 15% by weight based on the total weight of the composition. A surface modified gauze according to any one of claims 1 to 7. The surface modified gauze according to claim 8, wherein the gauze is a cosmetic tool used for applying the skin of the cosmetic. A method for stabilizing ceramides in cosmetics by impregnating the surface modified gauze of claim 8 with a cosmetic containing cosmetic. A ceramide-impregnated surface-modified gauze, wherein the ceramide is stabilized by impregnating the surface-modified gauze with a composition of any one of claims 1 to 7. 1) to gauze, ceramide; And a composition for surface modification of gauze comprising an alcohol and an ester-based oil, thereby modifying the surface of the gauze; And
2) contacting the gauze impregnated with the cosmetic composition to the skin to apply the cosmetic composition to the skin;
Wherein the cosmetic comprises a cosmetic composition containing a ceramide. 13. The method of claim 12, wherein the gauze comprises at least one alcohol selected from the group consisting of ethanol, hexanediol, glycerin, glycerol-20, butylene glycol, propylene glycol and dipropylene glycol; And at least one ester-based oil selected from the group consisting of isopropyl myristate, isopropyl palmitate, cetyl octanoate and myristyl myristate. 13. The method of claim 12, wherein the gauze is made of cellulose.