KR20230030304A - A oil drop type hydrogel composition - Google Patents

Abstract

The present invention relates to an oil drop type hydrogel composition in which fine-sized oil particles are evenly dispersed in a hydrogel to be effectively absorbed into the user's skin, wherein the oil drop hydrogel composition according to the present invention has a structure in which the fine oil particles are dispersed in the hydrogel in the hydrogel composition, and the specific gravity of the fine oil is within the following range: (Specific gravity of hydrogel - 0.05 × Specific gravity of hydrogel) <= Specific gravity of fine oil <= (Specific gravity of hydrogel + 0.05 × Specific gravity of hydrogel).

Description

Oil drop hydrogel composition {A OIL DROP TYPE HYDROGEL COMPOSITION}

The present invention relates to an oil drop hydrogel composition, and more particularly, to an oil drop hydrogel composition in which fine-sized oil particles are evenly dispersed in a hydrogel to be effectively absorbed into the skin of a user.

In addition to the basic factors of aging, modern people are suffering from serious skin damage due to the polluted external environment, stress in life, and the increased frequency of use of makeup products. To overcome this, various skin care products such as lotion, cream, and essence are used and dermatological treatment is utilized.

However, with the use of general skin care products, there is a limit to skin penetration due to the nature of skin tissue, so it is difficult to expect immediate skin improvement. This leads to relatively dangerous procedures such as expensive dermatological treatment and drug treatment. Therefore, there is a need for basic cosmetics that are effective in skin penetration, relatively safe and inexpensive.

Recently, the development and consumption of mask sheets to which various types of sheets are applied are active. This is because it utilizes sheet paper to effectively increase skin absorption of the content, while being relatively inexpensive. In addition to general sheet types, the range of hydrogels and biocelluloses is also expanding.

Among them, the application fields of hydrogels are diverse. It is widely applied not only in cosmetics but also in skin beauty and medical fields. Most hydrogels use the function of controlling the drug contained in the hydrogel, which is a support, to be slowly released toward the skin while maintaining the gel state.

As a core component of a conventional hydrogel, various gelling polymers having a function of forming and maintaining a gel are mainly used. The composition of a number of previously developed hydrogel mask sheets is mostly composed of water-soluble components, and even if the oil-soluble components are formulated, the use of the suspension for the purpose of differentiating the appearance or the level of slightly improving the feeling of use. In addition, when a large amount of useful ingredients are blended, there are various problems such as separation of useful ingredients, poor viscoelasticity, and poor skin adhesion.

In order to facilitate skin penetration with basic cosmetics, it is advantageous to reduce the particle size of cosmetics. Cosmetics can be largely divided into solubilization and emulsification, but there are some problems when applying them to hydrogel formulations.

In the case of the solubilized type, most of the composition is composed of water-soluble components, so it is difficult to penetrate the outermost layer of skin tissue composed of sebum film, and it is difficult to provide oil required by the skin.

In the case of the emulsified type, it can contain a large amount of oil and can provide sufficient nutrition to the skin, but it is difficult for the emulsified particles to physically move to the skin surface due to the gelling agent constituting the hydrogel, resulting in poor skin absorption. There is a downside to being low. In addition, when using an excessive amount of oil and emulsifier, there are technical problems such as gel formation and formulation instability, and when the amount of emulsifier is small or the emulsifier has poor emulsifying power, there may be a problem with stability over time in which the oil phase and the aqueous phase are separated. , which causes product quality deterioration.

Cosmetics using various methods and materials, such as liposomes, have been developed to overcome these formulation limitations, but it remains a difficult task in terms of overcoming cost limitations and safe skin application.

The technical problem to be solved by the present invention is to stabilize the oil by floating fine-sized oil particles in the form of oil drops in the aqueous phase gel formulation without an emulsifier, thereby providing visual differentiation and directly delivering the oil component to the skin when applied to the skin. It is an object of the present invention to provide a hydrogel composition having excellent moisturizing feeling.

The oil drop hydrogel composition according to the present invention for solving the above technical problem is characterized in that, in the hydrogel composition, the fine oil particles have a structure dispersed in the hydrogel, and the specific gravity of the fine oil is within the following range A fine oil particle hydrogel hydrogel composition.

(specific gravity of hydrogel - 0.05 × specific gravity of hydrogel) ≤ specific gravity of fine oil ≤ (specific gravity of hydrogel + 0.05 × specific gravity of hydrogel)

In the present invention, the fine oil particles are preferably 1 to 200 μm in size.

In the present invention, the fine oil is preferably one or more selected from the group consisting of hydrocarbon-based oils, ester oils, silicone oils, and vegetable oils.

In addition, in the present invention, it is preferable that the hydrogel composition contains a water-soluble gelling polymer.

In addition, in the present invention, the water-soluble gelling polymer is cellulose, konjac, locust bean gum, carob bean gum, alginate, chitosan, starch, pectin, algin, guar gum, mannan, pluronic gum arabic, pullulan, collagen, gellan It is preferably at least one selected from the group consisting of gum, xanthan gum, carrageenan, agar, and sodium polyacrylate.

In the present invention, the hydrogel composition preferably further includes an oil gelling agent.

In the present invention, the oil gelling agent is preferably selected from the group consisting of hydrocarbon-based wax, synthetic wax, hectorite-based oil gelling agent, dextrin fatty acid ester-based oil gelling agent, and ethylcellulose.

According to the oil drop hydrogel composition of the present invention, fine-sized oil particles are evenly dispersed in the hydrogel, so that sufficient nutrition can be supplied to the user's skin and nutrients can be absorbed effectively.

1 is a micrograph of an oil drop hydrogel composition according to an embodiment of the present invention.
2 is a photograph of a mask sheet prepared by an oil drop hydrogel composition according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the oil drop hydrogel composition according to the present embodiment has a structure in which fine oil particles are dispersed in the hydrogel, and the specific gravity of the fine oil particles is within the following range.

(specific gravity of hydrogel - 0.05 × specific gravity of hydrogel) ≤ specific gravity of fine oil particles ≤ (specific gravity of hydrogel + 0.05 × specific gravity of hydrogel)

That is, in the oil drop hydrogel composition according to the present embodiment, the specific gravity of the fine oil particles dispersed in the hydrogel is within the range of ± 5% of the hydrogel specific gravity, so that the fine oil particles dispersed in the manufacturing process and distribution process are hydrogel. It does not separate from the gel and remains intact.

When the specific gravity of the fine oil is less than 5% of the specific gravity of the hydrogel, the oil particles float to the upper part of the hydrogel and the oil particles are united. A sinking phenomenon occurs.

In addition, when the specific gravity of the oil is out of 5% of the specific gravity of the hydrogel, the oil phase part is added to the water phase gel phase and then the oil phase part is agglomerated to the outside of the stirring tank when the stirring process is performed to form particles. Can occur.

In this embodiment, the fine oil particles are preferably 1 to 200 μm in size.

And, in this embodiment, the fine oil is preferably one or more selected from the group consisting of hydrocarbon-based oils, ester oils, silicone oils, and vegetable oils. Here, the hydrocarbon-based oil includes mineral oil, isododecane, and squalane, the ester oil includes Ascorbyl Palmitate, Ascorbyl Stearate, and Cetyl Ethylhexanoate, and the silicone-based oil may be selected from dimethicone, cyclopentasiloxane, and trisiloxane. In addition, the vegetable oil is Macadamia nut oil, sunflower oil. You can choose from Olive oil.

Meanwhile, the oil drop hydrogel composition according to the present embodiment preferably includes a water-soluble gelling polymer. The water-soluble gelling polymer is cellulose, konjac, locust bean gum, carob bean gum, alginate, chitosan, starch, pectin, algin, guar gum, mannan, fluronig gum arabic, pullulan, collagen, gellan gum, xanthan gum, It is preferably at least one selected from the group consisting of carrageenan, agar and sodium polyacrylate.

In addition, the oil drop hydrogel composition according to the present embodiment may further include an oil gelling agent. Here, the oil thickener is used to control the size of oil particles. According to one embodiment, the oil thickener is preferably at least one selected from the group consisting of hydrocarbon-based wax, synthetic wax, hectorite-based oil gelling agent, dextrin fatty acid ester-based oil gelling agent, and ethylcellulose. .

<Production Example>

Prime Minister preparation Purified water and EDTA, polyhydric alcohol, preservative 60~80℃ gel phase preparation Polyhydric alcohol, gelling polymer
60℃ Gel phase addition and stirring 60~80℃ degassing vacuum degassing paid preparation oil
60~80℃ Oil phase input and stirring 60~80℃ coating and cooling -5 to 10℃ plastic surgery

[Example] Preparation of oil drop hydrogel composition

A cosmetic composition was prepared with the composition shown in Table 1 below. Specifically, the raw materials of the water phase are dissolved by heating to a temperature of 60 to 80 ° C, and the gel phase raw materials are added to the water phase and stirred to prepare the gel phase, followed by vacuum degassing, and separately, the raw materials of the oil phase are heated to a temperature of 60 to 80 ° C. Then, at 100 to 2,000 rpm, the heated oil phase was added in small amounts to the degassed gel phase with an aji mixer to form oil drops while slowly mixing, and then spread and applied to the substrate. Cooling the hydrogel using a cooler Then, it was molded into a predetermined shape to prepare a hydrogel composition including oil drops.

Example
One Example
2 Example
3 comparative example
One comparative example
2 comparative example
3 comparative example
4 Prime Minister Purified water to 100 to 100 to 100 to 100 to 100 to 100 to 100 Disodium EDT 0.05 0.05 0.05 0.05 0.05 0.05 0.05 glycerin 12.00 12.00 12.00 12.00 12.00 12.00 12.00 1,2-Hexanediol 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Butylene Glycol 6.00 6.00 6.00 6.00 6.00 6.00 6.00 carrageenan 1.10 1.10 1.10 1.10 1.10 1.10 1.10 Carob Bean Gum 1.30 1.30 1.30 1.30 1.30 1.30 1.30 algin 0.10 0.10 0.10 0.10 0.10 0.10 0.10 cellulose 0.10 0.10 0.10 0.10 0.10 0.10 0.10 sodium polyacrylate 0.10 0.10 0.10 0.10 0.10 0.10 0.10 pay-per-view Propylene Glycol Dibenzoate 0.96 1.12 1.24 1.52 0.86 1.76 0.48 Pentaerythrityltetraethylhexanoate 0.98 - 0.70 0.42 - 0.18 0.66 Cetylethylhexanoate - 0.82 - - 1.08 - 0.80 lipophilic pigment 0.06 0.06 0.06 0.06 0.06 0.06 0.06

[Test Example 1] Evaluation of specific gravity and specific gravity difference between water phase and oily phase

Example
One Example
2 Example
3 comparative example
One comparative example
2 comparative example
3 comparative example
4 Prime Minister 1.0403 1.0403 1.0403 1.0403 1.0403 1.0403 1.0403 pay-per-view 1.0491 1.0169 1.0754 1.1017 0.9776 1.1243 0.9580 Specific gravity difference (%) 0.85% -2.25% 3.37% 5.90% -6.03% 8.07% -7.91%

[Test Example 2] Oil dispersion stability and particle size evaluation

In order to confirm the dispersion stability of the oil particles of the hydrogel compositions of Examples 1 to 3 and Comparative Examples 1 to 4, the stability was confirmed while left at a temperature of 70 ° C. for 6 hours, and an optical microscope immediately after molding to confirm the size of the oil particles ( It was measured using ECLIPSE E200, Nikon Co.).

The results are shown in Table 4 below.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 dispersion stability O O O X X XX XX Average particle size (μm) 52±25 85±44 44±18 167±83 181±103 not measurable not measurable

○: Oil particles are evenly distributed in the hydrogel.

×: Oil particles are distributed in the upper or lower layer within the hydrogel.

XX: Oil particles are separated in the hydrogel.

From the results of Tables 2 and 4, in the case of Examples 1 to 3 according to the present invention, the oil drop forms particles stably in the water-soluble hydrogel formulation, and when stored at high temperature, the upper or lower layer is separated or the oil does not coalesce. I was able to confirm that it is not.

From the above test results, it can be confirmed that oil particles stably dispersed in the gel phase can be formed by appropriately adjusting the content of the composition of the water-soluble hydrogel and the oil-soluble oil according to the specific gravity value according to the present invention.

Claims (7)

In the hydrogel composition,
It has a structure in which fine oil particles are dispersed in the hydrogel,
Oil drop hydrogel hydrogel composition, characterized in that the specific gravity of the fine oil is within the range below.
(specific gravity of hydrogel - 0.05 × specific gravity of hydrogel) ≤ specific gravity of fine oil ≤ (specific gravity of hydrogel + 0.05 × specific gravity of hydrogel) The method of claim 1, wherein the fine oil particles,
Oil drop hydrogel composition, characterized in that the size of 1 ~ 200 ㎛. The method of claim 1, wherein the fine oil,
Oil drop hydrogel composition, characterized in that at least one selected from the group consisting of hydrocarbon-based oils, ester-based oils, silicone oils and vegetable oils. The method of claim 3, wherein the fine oil,
Oil drop hydrogel composition, characterized in that contained 0.1 to 5% by weight relative to the total weight of the composition. The method of claim 1, wherein the hydrogel composition,
An oil drop hydrogel composition comprising a water-soluble gelling polymer. The method of claim 4, wherein the water-soluble gelling polymer,
Cellulose, konjac, locust bean gum, carob bean gum, alginate, chitosan, starch, pectin, algin, guar gum, mannan, pluronic gum arabic, pullulan, collagen, gellan gum, xanthan gum, carrageenan, agar and sodium. Oil drop hydrogel composition, characterized in that at least one selected from the group consisting of polyacrylate. The method of claim 1, wherein the water-soluble gelling polymer,
Oil drop hydrogel composition, characterized in that contained 1.0 to 5.0% by weight relative to the total weight of the composition.

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