KR101922405B1 - Capsule-containing Cosmetic Composition and Method Preparing Thereof - Google Patents

Abstract

The present invention relates to a method for preparing an aqueous phase comprising the steps of preparing an aqueous phase component comprising agar and a humectant; Preparing an oily component comprising a silicone oil; Dropping an aqueous phase component into an oil phase component to form a capsule containing a primary coating containing agar in the composition; And adding oil-adsorptive powder and silicone elastomer gel to the capsule-formed composition to form a secondary coating of the capsule.

Description

[0002] Capsule-containing cosmetic compositions and methods for their preparation [

The present invention relates to a capsule-containing cosmetic composition and a process for producing the same.

The capsule-type formulation including agar which has been hitherto known is a form in which a capsule is formed through a step of forming a primary capsule using the physical properties of agar and carrageenan and forming a secondary capsule film using sodium alginate (Korean Patent Application No. 10-2014-0029792) which can contain a large amount of wax and oils using agar and bubble generating materials. In addition, bead formulations that can be used as emulsion cosmetics by themselves include forms of solid emulsion beads containing a gel-forming material such as a lipid material or agar solid at room temperature on a continuous phase (Korean Patent Application No. 10-2013-0145083 ) to be.

However, the above-described technique requires that a certain amount of the emulsion, such as cream and lotion, be made into a product after completion of the primary encapsulation formation, and the underwater type formulation may exhibit a swelling phenomenon or affect the quality of the formulation There was a difficulty.

In addition, when the capsules prepared by the outer process rather than the capsules prepared through the self-encapsulation process are contained in the formulations, the cosmetic ingredients can not be variously contained according to the cosmetic effects, and the hardness and strength of the capsules can be controlled, When the capsule is too hard to form, residual capsule remains. When the capsule is loosely formed, the capsule is easily crushed and injected separately into the formulation, which poses a problem in stability of the formulation during the manufacture of cosmetics.

In addition, there are a lot of efforts in the field of cosmetics to develop visual differentiation strategy products that can attract consumers' interest because they can bring visual pleasure from the appearance of the product with the excellent performance of the products.

Therefore, there is a need for a new technique for manufacturing a cosmetic preparation which forms a certain type of agar capsule in a continuous gel-forming material, when the agar capsule is rubbed on the skin, natural and easily shattered and melted to improve usability.

KR 10-2006-0117417 A KR 10-2014-0029792 A KR 10-2013-0145083 A

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a secondary coating comprising an oily component having different properties in a primary coating containing agar of a capsule, And to provide a capsule-containing cosmetic composition having improved stability of the capsule, and a process for producing the same.

One embodiment of the present invention provides a method of preparing a water-based composition comprising: preparing an aqueous phase component comprising agar and a humectant; Preparing an oily component comprising a silicone oil; Dropping an aqueous phase component into an oil phase component to form a capsule containing a primary coating containing agar in the composition; And adding oil-adsorbing powder and silicone elastomer gel to the capsule-formed composition to form a secondary coating of the capsule.

Wherein the aqueous phase component comprises agar in an amount of 0.8 to 1.2% by weight based on the total composition; And 10 to 15% by weight of a humectant.

In addition, the step of preparing the aqueous phase component may include heating the aqueous phase component and then maintaining the aqueous phase at a temperature of 45 to 50 ° C.

The step of preparing the oily component may include cooling the oily component to a temperature of 10 to 15 占 폚.

The water phase component may further comprise at least one member selected from the group consisting of carrageenan, pectin, gellan gum, and carob bean gum.

The humectant may include glycerin and dipropylene glycol in a ratio of 5: 5 to 6: 4.

The oily component comprises 25 to 35% by weight of a silicone oil based on the total composition; And 1.5 to 3% by weight of an emulsifier.

The oil adsorbing powder may be at least one member selected from the group consisting of vinyl dimethicone / methicillosilsesquioxane crosspolymer, silica, silica dimethysilylate, and silica silylate.

The silicone elastomer gel may comprise cyclopentasiloxane, dimethicone / vinyl dimethicone crosspolymer, or mixtures thereof.

In addition, the capsule-containing cosmetic composition may be in the form of a cream.

Another embodiment of the present invention relates to a primary coating comprising agar; And a capsule comprising a secondary coating containing an oil-adsorptive powder and a silicone elastomer gel formed on the primary coating.

The capsule-containing cosmetic composition of the present invention is characterized in that the skin cosmetic composition and the moisturizing composition are obtained by using the physical property of the agar capable of forming a water-soluble gel and the temperature difference of the oil component including the silicone oil and the temperature of the water- And then forming a secondary coating of the capsules with an oil-soluble component such as an oil-adsorbing powder and a silicone elastomer gel, thereby preventing swelling and watering of the capsules, thereby improving the stability of the capsules.

In addition, the present invention is easy to control the use feeling, hardness, color, size and the like of the capsule itself, and is easy to control the functional raw materials and cosmetic ingredients, which is advantageous for diversification of products.

Also, according to the present invention, it is possible to provide a capsule-containing cosmetic composition having a stable capsule formed by controlling the content of an agar and a moisturizing agent in an aqueous component, and a capsule- have.

1 is a structural image of a capsule.
2 shows the particle size change of an agar capsule according to an aqueous phase temperature as an embodiment of the present invention.
3 shows an evaluation result of feeling (wrinkle fit) using the cosmetic composition of Example 1 as an embodiment of the present invention.
Fig. 4 shows the results of evaluation of use feeling (skin texture improvement) using the cosmetic composition of Example 1 as one embodiment of the present invention.

The present invention relates to a capsule-containing cosmetic composition containing a skin cosmetic ingredient and a moisturizing ingredient by using an agar.

Figure 1 schematically illustrates the structure of a capsule made according to one embodiment of the present invention. The capsule may comprise a primary coating containing agar and a secondary coating containing a silicone adsorbable powder and a silicone elastomer gel formed on the primary coating. As described above, the capsules of the present invention are water-soluble and the trauma is useful.

Thus, in the capsule-containing cosmetic composition of the present invention, stability of the capsules is improved and the capsule particles can be easily observed with the naked eye, thereby providing an aesthetic effect to the user.

In addition, the capsule-containing cosmetic composition according to the present invention may be in the form of a cream. Specifically, the capsule can be immediately applied to a cream formulation by adding oil-adsorbing powder to a silicone oil that helps to cool the primary coating.

In the case of conventional capsule-containing creams, the capsules in which the wound is water-soluble gel are contained in an underwater type (O / W) cream. In the case of the cream containing the externally processed capsules in the water type (O / W), there was a limitation in selecting various colors, functional ingredients and cosmetic ingredients. However, the composition of the capsule-containing cream formulation according to the present invention has the effect of variously selecting the color and cosmetic composition of the capsule.

In one embodiment of the present invention, there is provided a method of preparing an aqueous composition comprising: preparing an aqueous phase component comprising agar and a humectant; Preparing an oily component comprising a silicone oil; Dropping an aqueous phase component into an oil phase component to form a capsule containing a primary coating containing agar in the composition; And adding oil-adsorbing powder and silicone elastomer gel to the capsule-formed composition to form a secondary coating of the capsule.

The agar forming the primary coating of the capsule of the present invention has a property of forming a gel. In the present invention, the agar component is added to the aqueous phase component and added dropwise to the aqueous phase component, and the primary capsule of the capsule is formed using the difference in temperature between the aqueous phase component and the oil phase component.

In order to make the temperature difference, in the water component preparation step, it may further include a step of heating and stirring the water component, and then the temperature is preferably maintained at 45 to 50 ° C.

When the aqueous phase component is dropped onto the oil phase while maintaining the temperature range, the average size of the capsules may be in the range of 1,500 to 2,000 μm. Accordingly, the capsule formability is excellent, and when used as an actual cream formulation, there is an effect that the capsule shell residue is small and the foreign body feeling is small.

The step of preparing the oily component may include cooling the oily component to a temperature of 10 to 15 占 폚, and may further include stirring the oily component of the silicone oil and the emulsifier. When the oily component is maintained at the above temperature, it is easy to obtain the desired capsule size due to the temperature difference with the water component.

Further, the present invention is characterized in that a stable capsule is formed by controlling the content of an agar and a moisturizing agent in an aqueous component, and an improvement in spreadability and feeling upon application to the skin. To this end, the aqueous phase component comprises 0.8 to 1.2% by weight of agar based on the total composition; And 10 to 15% by weight of a humectant.

When the agar is contained in the above numerical range, the strength of the capsule formed may be about 150 to 250 g / mm. As a result, the stability of gel formation is excellent at temperatures of 4 캜, 25 캜 and 40 캜 overall, and the capsule is not broken well. In addition, there are few capsule residue and a small amount of foreign substance, and the capsule formation is also excellent.

In addition, when the humectant is contained in an amount of less than 10% by weight, the agar capsule is firmly made and is not well crushed, leaving a residue on the skin. When the humectant is contained in an amount exceeding 15% by weight, the agar capsule is small in size and the capsule is not well formed. Therefore, when the humectant in the range of 10-15% by weight is maintained, the formation of the agar capsule is easy, the skin remains are not left, and there is an advantage that it is well absorbed.

In addition, the aqueous phase component may further contain purified water, and the content may range from 40 to 50% by weight.

As the moisturizing agent, at least one selected from the group consisting of glycerin, dipropylene glycol, butyleneglycol, propanediol, and methylpropanediol can be used. Preferably, the humectant may include glycerin and dipropylene glycol in a ratio of 5: 5 to 6: 4. Thereby, it is possible to realize a capsule-containing cosmetic composition having no feeling of residual capsule when applied to the skin and having excellent spreadability.

In addition, the water phase component may further include at least one gelling agent selected from the group consisting of carrageenan, pectin, gellan gum, and carob bean gum. The addition of karakinan, pectin, and gellan gum can improve the feeling of use. For example, carrageenan may be added while agar is used as the main base capsule material to obtain a hard capsule, and a small amount of pectin and gellan gum may be added to control the softness and moisturization of the capsule when it is applied to the skin have. The content of the additional gelling agent is preferably about 0.1 to 0.3% by weight based on the total composition.

In addition to the agar and the moisturizing agent, the aqueous phase component may contain pentyleneglycol and phenoxyethanol, which are components used for preservation purposes, in an amount of 1 to 1.5% by weight and 0.3 to 0.4% by weight, respectively, And 0.5 to 1% by weight of panthenol as a protective component. In addition, it may contain 2% by weight of niacinamide for skin moisturizing and whitening effect, and may contain 0.1 to 0.5% by weight of silica in order to alleviate the stickiness of the finish feeling after use of the capsule.

In order to encapsulate the aqueous phase component including the agar by dropping it into the oil phase component, silicone oil of the corresponding amount is required. Thus, the oily component comprises 25 to 35% by weight of a silicone oil based on the total composition; And 1.5 to 3% by weight of an emulsifier. When the silicone oil is less than 25% by weight, when the water phase (silicone oil) is mixed while the water phase is dropped, the capsules are initially formed well, but when the water phase is continuously injected, the water is aggregated and a large lump is formed.

When the amount of the silicone oil is more than 35% by weight, encapsulation is sufficient, but in order to form a secondary coating, an excessive amount of oil adsorbing powder must be added in order to adsorb excess silicone oil. As a result, there is a problem that the feeling of use becomes very powdery and the unit price becomes high. Therefore, it is preferable that silicone oil is contained in an amount of 25 to 35% by weight based on the whole composition in order to form a capsule cream which can feel the moisturizing feeling and silky feeling while maintaining the proper amount of water.

Further, the emulsifier is composed of a hydrophilic element and a lipophilic element, and is injected for formulation stability. If the emulsifier content is less than 1.5% by weight, the stability of the primary capsule and secondary capsule interface may be poor and the capsule may be damaged. On the other hand, when the amount is more than 3% by weight, the lipophilic component of the emulsifier is silicon oil-friendly, which is biased toward the silicone oil and thus the interface stability is poor. In addition, since the emulsifier is not adsorbed well by the oil adsorbing powder, there is a possibility that the stability of the oil coming out from the surface of the capsule cream may be problematic. Therefore, it is preferable to contain about 1.5 to 3% by weight of the emulsifier based on the total composition.

Next, the present invention includes a step of stabilizing the capsule by adding an oil-absorbing powder and an oil-soluble ingredient such as a silicone elastomer gel to the capsule-containing composition containing the primary coating. Stabilizing the capsule means forming a secondary coating of an oil-soluble component on the primary coating. By forming the secondary coating with the oil-soluble ingredient on the primary coating, swelling of the capsule can be prevented and a stable capsule can be maintained for a long period of time. In addition, there is an advantage that the capsule can be immediately applied to a cream formulation by adding an oil-absorbing powder to a silicone oil that helps cooling the primary coating.

The oil adsorbing powder may be at least one selected from the group consisting of vinyl dimethicone / methicillic sesquioxane crosspolymer, silica, silica dimethysilylate, silica silylate, though not limited thereto.

The silicone elastomer gel may include, but is not limited to, cyclopentasiloxane, dimethicone / vinyl dimethicone crosspolymer, or mixtures thereof. Preferably, the dimethicone / vinyl dimethicone crosspolymer powder is dispersed in cyclopentasiloxane and gelled. As such a silicone elastomer gel, a commercially available product can be purchased and used, for example, KSG-15 from Shin-Etsu.

Hereinafter, the present invention will be described in detail with reference to Examples. It is to be understood by those skilled in the art that these examples are for illustrative purposes only and that the scope of the present invention is not construed as being limited by these examples.

Example

Example  1. Preparation of the capsule-containing composition of the present invention

The ingredients of Table 1 were processed according to the steps of (a) to (g) to prepare an agar gel encapsulated cream in which the beads, which were solidified lipid material, were in a normal size form. The injection temperature of the aqueous phase was set at 50 캜. The composition of each component in Table 1 depends on the weight%.

division ingredient Example 1 A Purified water To 100 glycerin 5.00 Dipropylene glycol 5.00 Agar (agar) 1.00 Citric acid 0.10 Sodium citrate 0.10 Mica (CI 77019), titanium dioxide (CI 77891) 0.50 B Cyclopentasiloxane 20.00 Three tilipies / piperazine-10/1 dimethicone 1.00 Piggy-10 Dimethicone 1.00 Pentaerythritol tetrahexyl hexanoate 1.00 Dimethicone 2.00 C Vinyl Dimethicone / Methiconic Ssesquioxane Crosspolymer 10.00 Silica 4.00 D Cyclopentasiloxane, dimethicone / vinyl dimethicone crosspolymer 10.00

(a) Components A in Table 1 were heated (90 DEG C) and mixed uniformly.

(b) Components B in Table 1 were mixed uniformly with stirring and the temperature was cooled to 10 to 15 ° C.

(c) The components C and D in Table 1 were each weighed.

(d) Cooling the above (a) and keeping it at a temperature (50 캜), the capsules were formed by slowly adding to the (b) in small amounts.

(e) The above (d) and (c) were sequentially added and mixed.

Comparative Example  One

The procedure of Example 1 was repeated except that the components D were first blended with the component B of the step (b) in Example 1 and then added to the component (b) while keeping the temperature (50 ° C) .

In this case, since the gel having a high viscosity is formed first, the capsules are not formed well even when an aqueous component is added to the oil component.

Comparative Example  2 to 5 - Water phase  Difference in input temperature

In the step (d), Comparative Example 2-5 was performed by varying the inlet temperature of the aqueous phase to 35, 40, 55, and 60 ° C, respectively.

Example  2. Preparation of Capsule of the Present Invention - Difference in the kind and content of polyol in aqueous component

The components of Table 2 were processed according to the following steps (a) to (c) to prepare primary agar capsules according to the polyol content of the aqueous phase. The composition of each component in Table 2 depends on the weight%.

division
ingredient
Example 2
Comparative Example 6 7 8 9 A
Purified water To 100 To 100 To 100 To 100 To 100 glycerin 5.00 10.00 15.00 - - Dipropylene glycol 5.00 - - 10.00 15.00 Agar (agar) 1.00 1.00 1.00 1.00 1.00 Citric acid 0.10 0.10 0.10 0.10 0.10 Sodium citrate 0.10 0.10 0.10 0.10 0.10 B
Cyclopentasiloxane 50.00 50.00 50.00 50.00 50.00 Three tilipies / piperazine-10/1 dimethicone 1.00 1.00 1.00 1.00 1.00 Piggy-10 Dimethicone 1.00 1.00 1.00 1.00 1.00 Dimethicone 2.00 2.00 2.00 2.00 2.00 division
ingredient
Comparative Example 10 11 12 13 14 A
Purified water To 100 To 100 To 100 To 100 To 100 glycerin 5.00 - 20.00 - - Dipropylene glycol - 5.00 - 20.00 - Agar (agar) 1.00 1.00 1.00 1.00 1.00 Citric acid 0.10 0.10 0.10 0.10 0.10 Sodium citrate 0.10 0.10 0.10 0.10 0.10 B
Cyclopentasiloxane 50.00 50.00 50.00 50.00 50.00 Three tilipies / piperazine-10/1 dimethicone 1.00 1.00 1.00 1.00 1.00 Piggy-10 Dimethicone 1.00 1.00 1.00 1.00 1.00 Dimethicone 2.00 2.00 2.00 2.00 2.00

(a) Components A in Table 2 were heated (90 DEG C) and mixed uniformly.

(b) Components B in Table 2 were mixed uniformly with stirring and the temperature was cooled to 10 to 15 ° C.

(c) The capsule was prepared while cooling the above (a) and slowly adding it to the (b) in a small amount while maintaining the temperature (50 ° C).

Experimental Example

Experimental Example  One. Water phase  The particle size and apparent viscosity of the capsule, Swelling  evaluation

In Example 1 and Comparative Example 2-5, agar capsules having different capsule particle sizes were formed by varying the temperature at which the aqueous phase containing agar was injected into the oil phase. The results are shown in Table 3 and FIG. 2, respectively. In order to confirm the stability of capsules, Lee Soo Hyun and swelling phenomenon were confirmed.

Stability Example 1
(50 DEG C) Comparative Example 2
(35 DEG C) 3
(40 DEG C) 4
(55 ° C) 5
(60 DEG C) Capsule formation degree 5 3 4 2 One Capsule shell residue 5 3 3 5 5 Average capsule size (탆) 1,500 3,500 2,500 500 300 Lee Soo Hyun Award X X X X X Swelling phenomenon X X X X X

The degree of capsule formation shown in Table 3 was evaluated as 1 to 5, 1 indicates no capsule formation, and 5 indicates excellent capsule formation.

The capsule shell residue shown in Table 3 was evaluated as a value of 1 to 5, wherein 1 indicates that a large amount of residue remained, and 5 indicates no residue.

The lipid image shown in Table 3 was stored in a 40 ° C thermostat for 4 weeks and confirmed weekly to determine the amount of moisture that was lost. O indicates the occurrence of Lee Soohyun, and X indicates the absence of Lee.

The swelling phenomenon of the capsules shown in Table 3 was confirmed by storing them for 4 weeks in a 40 ° C thermostat and confirmed that the capsules were swollen and broken. O indicates a swelling phenomenon, and X indicates no swelling phenomenon.

FIG. 2 shows changes in the particle size of the agar capsule according to the aqueous phase temperatures of 55 to 60 ° C (a), 50 ° C (b) and 35 to 40 ° C (c), respectively. From this, it can be confirmed that the capsule particle size can be changed according to the injection temperature of the aqueous phase.

In addition, in Comparative Examples 2 and 3, a part of the aqueous phase component including agar was hardened and a large lump formation phenomenon was observed at the time of production.

Experimental Example  2. Feeling  evaluation( Wrinkle )

For Example 1, the wrinkle-pad efficacy of the product was evaluated in 10 panelists aged 26 to 35 years old. The wrinkles (front) of the top face were photographed, and Example 1 was spread evenly on the eye area and then the wrinkles of the eyes of the same area were photographed. The photographing and analysis results are shown in Fig. The results were analyzed by Indentation * after designating the same area of the measurement site.

Experimental Example  3: Feeling  evaluation( Skin texture improvement )

For Example 1, 10 skin test panels of 26 to 35 year olds were tested for skin skin improving efficacy. The test site (face) was washed in water and waited for 10 minutes in a constant temperature and humidity room, and skin texture (total) was photographed. After applying uniformly to the face in Example 1, it was fully absorbed and waited for 10 minutes in a constant temperature and humidity chamber, and skin texture (after) of the same site was photographed. The photographing and analysis results are shown in Fig. The results were analyzed by comparing the roughness Ra and the roughness Rq values after designating the same area as the whole area of the measurement site. The measuring instrument used was Antera 3D (miravex, UK).

√ Roughness Ra (roughness scale I)

: Absolute value arithmetic mean of the skin height that numericalizes the skin cross section by wavelength.

√ Roughness Rq (roughness scale II)

: The square mean of the skin height, which is obtained by digitizing the skin cross section.

Experimental Example  4. Aqueous phase  Evaluation of Capsule Strength by Controlling the Moisturizing Agent Content

Agar capsule was prepared in the same manner as in Example 2 and Comparative Examples 6 to 14 except that the content of the moisturizing agent (polyol) in the aqueous phase was varied in order to confirm the effect of the content of the moisturizing agent in the aqueous component. The agar capsule prepared and the capsule capsule residue were tested, and the results are shown in Table 4 below.

Stability Example 2 Comparative Example 6 7 8 9 10 11 12 13 14 Capsule formation degree 5 3 2 3 2 4 4 2 2 5 Capsule shell residue 5 4 4 4 4 2 2 4 4 One

The degree of capsule formation shown in Table 4 was evaluated as 1 to 5, 1 indicates no capsule formation, and 5 indicates excellent capsule formation.

The capsule shell remnants shown in Table 4 were evaluated at values of 1 to 5, where 1 indicates that a large amount of remnants remained, and 5 indicates no residue.

Claims (14)

An aqueous component preparation step in which an aqueous phase component containing agar and a humectant is heated and then maintained at a temperature of 45 to 50 ° C;
An oil component preparation step of cooling the oil component containing the silicone oil and the emulsifier to a temperature of 10 to 15 캜;
Dropping an aqueous phase component into an oil phase component to form a capsule containing a primary coat containing agar in the composition; And
A method of preparing a capsule-containing cosmetic composition, comprising: adding a oil-adsorbing powder and a silicone elastomer gel to a capsule-formed composition to form a secondary coating of the capsule. The method according to claim 1,
The water-
0.8 to 1.2 wt% agar based on the total composition; And
10 to 15% by weight of a humectant;
≪ / RTI > delete delete The method according to claim 1,
Wherein the water phase component further comprises at least one member selected from the group consisting of carrageenan, pectin, gellan gum, and carob bean gum. The method according to claim 1,
Wherein the moisturizing agent comprises glycerin and dipropylene glycol in a weight ratio of 5: 5 to 6: 4. The method according to claim 1,
The oil component
25 to 35 weight percent silicone oil based on total composition; And
And from 1.5 to 3% by weight of an emulsifier. The method according to claim 1,
Wherein the oil adsorbing powder is at least one selected from the group consisting of vinyl dimethicone / methicillosilsesquioxane crosspolymer, silica, silica dimethysilylate, silica silylate, and the like. The method according to claim 1,
Wherein the silicone elastomer gel comprises cyclopentasiloxane, dimethicone / vinyl dimethicone crosspolymer, or mixtures thereof. The method according to claim 1,
Wherein the capsule-containing cosmetic composition is a creamy formulation. A primary coating containing agar formed by dropping an aqueous phase component at a temperature of 45 to 50 캜 into an oil phase component at a temperature of 10 to 15 캜;
A secondary coating containing an oil-adsorbing powder and a silicone elastomer gel formed on the primary coating; And
And a capsule containing an emulsifier for stabilizing an interface between the primary coating and the secondary coating. The method of claim 11, wherein
Wherein the oil adsorbing powder is at least one selected from the group consisting of vinyl dimethicone / methicillosilsesquioxane crosspolymer, silica, silica dimethysilylate, silica silylate, and the like. 12. The method of claim 11,
Wherein the silicone elastomer gel comprises cyclopentasiloxane and a dimethicone / vinyl dimethicone crosspolymer. 12. The method of claim 11,
Wherein the capsule-containing cosmetic composition is a creamy formulation.

Images