KR100848879B1 - Wax-free water-in-oil solid emulsion composition - Google Patents

Abstract

The present invention relates to a wax-free water-in-oil solid emulsified composition, wherein the composition provided by the present invention contains an oily component containing no wax component and a large amount of volatile silicone oils, including dextrin fatty acid ester and stearoyl inulin. It is characterized by a formulation emulsified with excellent stability by containing an aqueous phase while solidifying with a network of. In addition, the silicone oil may be characterized by not using a silicone absorbent polymer which is used as a volatile inhibitor of silicone.

The composition provided by the present invention is a solid appearance, light and soft usability when applying the skin, and after the absorption again forms a thin film on the skin to provide a sense of sustain and has the effect of trimming the skin texture.

Description

Solid-type water-in-oil emulsified composition not containing wax

1 is a photographic image showing the skin texture before use of the composition according to Example 3 of Test Subject 1. FIG.

Figure 2 is a photographic image showing the skin texture after using the composition according to Example 3 of Example 1 for one week.

The present invention relates to a wax-free water-in-oil solid emulsion composition, and more particularly, 40 to 75 wt% of an oily component containing about 30 to 50 wt% of a volatile silicone oil and an emulsifier 1 to 5 in order to provide such a composition. It contains the weight%, the water phase component 15-35% by weight and the organic oil gelling agent 5-20% by weight. In particular, the formulation is characterized by containing no wax and using no silicone absorbent polymer or powder.

Solid cosmetics are generally classified into powdered cosmetics which solidify the main pigment as an oil binder, solid emulsion cosmetics in which waxes and oils are dispersed as main components, and solid emulsion cosmetics emulsified with oily components such as waxes and water-based components. Can be.

The solid emulsified cosmetics have been studied a lot since they can produce unusual formulations and usability compared to cosmetics composed of powder or oil only, but the hardness changes with time and the shape change due to temperature change are becoming a problem. In order to overcome this problem, methods for improving stability by using waxes such as candelillanab, carnaubanab, wood, braze, ceresin, ozokerite, polyethylene, and microcrystallin have been devised. 2004-0067590, 2005-0537266, 2006-0023879, 2006-0080753), which has the disadvantage of using a large amount of wax, burdens the skin, is not easily absorbed into the skin and adheres to the skin The disadvantage that the usability, such as that, is not good, is confirmed.

On the other hand, the emulsion cosmetic composition is usually divided into oil-in-water emulsion type, water-in-oil emulsion type. Oil-in-water emulsified type is a hydrophilic type, the feel is soft and soft, but has the disadvantage of poor durability and water resistance. On the other hand, water-in-oil cosmetics are excellent in persistence and water resistance, but the burden on the skin due to the stickiness, oily feeling, etc. has a disadvantage in that the feeling of use, such as spreadability, spreadability.

In order to improve the usability of such a water-in-oil cosmetic composition, a water-in-oil emulsion cosmetic composition containing a large amount of volatile silicone has been developed. And in order to give the advantages of the solid cosmetics there was developed a volatile silicone high water-in-oil solid emulsion composition. However, in a water-in-oil solid emulsion composition containing a volatile silicone oil, the contents shrink due to volatilization of silicone oil, resulting in poor long-term stability and storage. In order to prevent this, methods using volatile silicone absorbent polymers (see Patent Publication No. 2005-0091572) or inorganic gelling agents have been proposed (see Patent Publication No. 2006-0023879). It is pointed out that it is not easy to give a feeling and the user feels stiff. In addition, Japanese Laid-Open Patent Publication No. 2002-342 discloses a method of preventing the volatilization of silicone oil by developing a container having an increased sealability of the container itself, but its effect is not sufficient.

In the contents of the patent documents referred to in the present specification, the level of the technical field belonging to the present invention and the content of the present invention will be described more clearly.

Accordingly, the present inventors have invented a volatile silicone high water-in-oil solid emulsified composition, which can overcome the above-mentioned disadvantages without containing wax and silicone absorbent polymer, which is solid in appearance, Light and soft usability, and after absorption it forms a thin film on the skin to provide a lasting feeling and improve skin texture.

The present invention relates to a wax-free water-in-oil solid emulsion composition, in order to achieve the above object, 40 to 75% by weight of an oily component containing about 30 to 50% by weight of a volatile silicone oil, and 1 to 5% by weight of an emulsifier. 15 to 35% by weight of the aqueous phase component and 5 to 20% by weight of the organic oil gelling agent. In particular, the formulation is characterized by containing no wax and using no silicone absorbent polymer or powder.

Thus, the composition is not used wax is greatly improved the feeling of use, there is no sweating caused by the volume difference according to the temperature between the wax and oil, so the stability is very excellent.

Hereinafter, the wax-free water-in-oil solid emulsion composition of the present invention will be described in detail.

The composition of the present invention is 40 to 75% by weight of the oil phase component containing about 30 to 50% by weight of the volatile silicone oil, 1 to 5% by weight emulsifier, 15 to 35% by weight of the water phase component and 5 to 20% by weight of the organic oil gelling agent It contains.

In the present invention, the oil phase contains 40 to 75% by weight of an oil phase containing volatile silicone oil. Examples of the oil to be used include pentaerythritol tetraethylhexanoate, triethylhexanoin, neopentylene glycol dicaprate, cetylethylhexanoate, caprylic capric triglyceride, decamethylcyclopentasiloxane, dimethylpolysiloxane, Phenyltrimethicone, olive oil, jojoba oil, macadamia oil, hydrogenated castor oil isostearate and the like can be used. Among the oil components used herein, volatile silicone oil is used as an emulsified solid cosmetic formulation, as well as an emulsified liquid cosmetic, and is a raw material that greatly improves the feeling of use of the cosmetic. However, when used alone, it is used in combination with non-volatile oils because it lacks sustainability and moisture after use. In the present invention, it is preferable to use cyclomethicone, which is a volatile silicone 4 to hexamer which is volatile and has no raw material odor, and contains 30 to 50% by weight of the composition.

In this invention, 1-5 weight% of emulsifier components are contained. The emulsifiers used in conventional water-in-oil emulsified cosmetics may be used, and polyoxyalkylene-modified silicone is preferable in consideration of the usability and emulsion stability in view of the nature of the composition containing a large amount of silicone oil.

Moreover, 15-35 weight% of aqueous phase components are contained in this invention. As an aqueous phase component, well-known aqueous phase components, such as butylene glycol, glycerin, dipropylene glycol, etc. can be used individually or in mixture of 1 or more types with purified water.

Moreover, this invention contains 5-20 weight% of organic type oil gelling agents. Examples of the organic oil gelling agent include dextrin palmitate, dextrin palmitate / ethylhexanoate, stearoyl inulin and the like. These can be used individually or in mixture of 1 or more types thereof, and can change a soft to hard appearance according to these composition ratios. Oily components and dextrin fatty acid esters exhibit solidification characteristics due to the network formed by hydrogen bonds and alkyl groups. This network prevents the volatilization of silicone oils. Do not do it. In addition, the gel thus formed has thixotropic properties, so it is very light when applied, but once applied to the skin also improves the adhesion.

In addition, the components conventionally added to the water-in-oil solid emulsion composition may be further added within the scope of not impairing the object of the present invention.

Hereinafter, although an Example and a comparative example demonstrate this invention further more concretely, an Example does not limit this invention.

Examples 1-3 and Comparative Examples 1-3

Examples 1-3

Raw material name (% by weight) Example 1 Example 2 Example 3 One Dextrin palmitate 3.0 5.0 7.0 2 Stearoyl inulin 7.0 5.0 3.0 3 Ceresin - - - 4 Canderira - - - 5 Vinyl Dimethicone / Methicone Silsesquioxane Crosspolymer - - - 6 Dimethicone / Vinyl Dimethicone Crosspolymer - - - 7 Polyoxyalkyrene Modified Silicone 2.0 2.0 2.0 8 Decamethylcyclopentasiloxane 45.0 45.0 45.0 9 Triethylhexanoin 20.0 20.0 20.0 10 Propylparaben 0.05 0.05 0.05 11 Purified water To.100 To.100 To.100 12 glycerin 5.0 5.0 5.0 13 Methylparaben 0.15 0.15 0.15

Comparative Examples 1-3

Raw material name (% by weight) Comparative Example 1 Comparative Example 2 Comparative Example 3 One Dextrin palmitate - - - 2 Stearoyl inulin - - - 3 Ceresin 6.0 - 6.0 4 Canderira - 6.0 - 5 Vinyl Dimethicone / Methicone Silsesquioxane Crosspolymer - 2.0 2.0 6 Dimethicone / Vinyl Dimethicone Crosspolymer 8.0 - - 7 Polyoxyalkyrene Modified Silicone 2.0 2.0 2.0 8 Decamethylcyclopentasiloxane 40.0 45.0 45.0 9 Triethylhexanoin 20.0 20.0 20.0 10 Propylparaben 0.05 0.05 0.05 11 Purified water To.100 To.100 To.100 12 glycerin 5.0 5.0 5.0 13 Methylparaben 0.15 0.15 0.15

Hereinafter, the water-in-oil solid emulsion composition obtained in Examples 1-3 and Comparative Examples 1-3 was evaluated for stability, usability, skin condition improvement effect, and the like.

Test Example 1 Stability of the Composition

The above Examples and Comparative Examples were stored at 50 ° C., 40 ° C., room temperature, and a cycle chamber (−5 ° C. → 25 ° C. → 45 ° C.) for 1 month, and then evaluated for stability. In addition, the degree of sweating was observed through surface change.

Score Score

Score Stability Sweating ◎ Very good Very good ○ Good Faint gloss increase on the surface △ usually Fine oil visible X Slightly separated Oil drops visible XX detach -

Stability Evaluation Results

Item Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 50 ℃ ○ ○ ◎ X X △ 40 ℃ ◎ ◎ ◎ △ △ △ Room temperature ◎ ◎ ◎ ○ △ ◎ cycle ○ ◎ ◎ X X △ Sweating ○ ◎ ◎ X X △

As summarized in the above table, Comparative Examples 1 to 3 using the wax component and the silicone absorbent polymer showed unstable results compared to the respective examples. This is caused by the separation of oil and water phase components between the wax structure, it can be seen that the instability is accelerated, especially at cycles and high temperatures. In addition, it was confirmed through Example 1 to 3 that the optimum combination ratio also exists in the combination ratio of dextrin palmitate and stearoyl inulin. It was confirmed that it is very excellent.

Test Example 2 Feeling of the Composition

Ten women each of the compositions prepared in Example 3 and Comparative Example 3 were used three or more times, and then the feeling of use (appearance, applicability, lasting moistness, stickiness) was evaluated. The results are shown in Table 5 below.

Item Example 3 Comparative Example 3 Exterior 8 2 Application 9 One Moist Lasting 7 3 Sticky 3 7

Evaluation Score (1 ~ 9): The higher the number, the better or stronger the characteristics of the item.

As can be seen from the results, it can be seen that Example 3 has a very good quality in terms of feeling compared to Comparative Example 3. In particular, the solidity and excellent application of the results.

Test Example 3 Evaluation of Skin Texture Improvement of Composition

In Example 3 and Comparative Example 3, 10 women were used for 1 week, and evaluation of skin texture improvement was performed by photo image analysis (photo image analysis, VISIA, Canfield), and is shown in Table 6 below. 1 is a photographic image showing the skin texture before using the composition according to Example 3 of the test subject 1, Figure 2 is a photographic image showing the skin texture after using the composition according to Example 3 of the test subject 1 to be. In FIG. 1 and FIG. 2, the blue dot is a part of the skin, and the yellow point is a part of the skin. Therefore, skin texture (Evenness) means that the closer to 100% the skin condition is improved.

Example 3 Comparative Example 3 Before use 1 week later Use 1 week later Skin texture condition (average value) 61% 69% 63% 61%

As can be seen from the results, it can be seen that Example 3 has an excellent skin texture improvement effect compared to Comparative Example 3.

As described above, the water-in-oil solid emulsion composition provided by the present invention does not contain any wax component and solidifies the oil composition including a large amount of silicone oil by forming a network of dextrin fatty acid ester and stearoyl inulin to solidify the water phase component. It features a formulation emulsified with excellent stability. The composition provided by the present invention is solid in appearance, but is light and soft in use when applying the skin, and after absorption, forms a thin film on the skin to provide a long lasting effect and to prepare the skin texture.

Claims (4)

Wax-free water-in-oil solid emulsion composition, which is an organic oil containing no silicone absorbent polymer as volatilization inhibitor of silicone oil and consisting of at least one component of dextrin palmitate, dextrin palmitate / ethylhexanoate and stearoyl inulin A water-in-oil solid emulsion composition comprising a gelling agent. According to claim 1, 40 to 75% by weight of the oil phase component containing about 30 to 50% by weight of the volatile silicone oil, 1 to 5% by weight of the emulsifier, 15 to 35% by weight of the aqueous phase component and dextrin palmitate based on the total weight of the composition And 5-20% by weight of an organic oil gelling agent comprising at least one component of dextrin palmitate / ethylhexanoate and stearoyl inulin. delete The solid emulsion composition according to claim 1 or 2, wherein when the organic oil gelling agent contains dextrin palmitate and stearoyl inulin, the ratio of dextrin palmitate in the two components is 50% by weight or more.

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