Water-in-silicone compositions that become clear at refrigeration temperatures

Abstract

To provide a water-in-silicone composition which is opaque at normal temperature and transparent at refrigeration temperature.SOLUTION: The present invention relates to a water-in-silicone composition that becomes transparent at refrigeration temperature, and more specifically, the composition comprises an aqueous phase and a silicone phase, wherein the difference in refractive index between the aqueous phase and the silicone phase at room temperature is 0.003 to 0.004, and the composition is opaque at room temperature. Since the composition is transparent at a refrigeration temperature, the temperature of the composition can be visually confirmed, and furthermore, when the composition is used after refrigeration storage, the composition can give a refreshing feeling and a refreshing feeling not only to the touch but also visually.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to water-in-silicone compositions that become clear at refrigeration temperatures. [Background technology]

[0002] Emulsion cosmetic products are widely used in cosmetics because they can realize the benefits of both the oil and water phases. Meanwhile, to improve the appearance of emulsion cosmetic compositions and satisfy consumer aesthetics, several attempts have been made to develop transparent emulsion cosmetic compositions using various methods, such as refractive index matching. Previous research has primarily focused on developing cosmetic compositions that are transparent at room temperature.

[0003] On the other hand, there is an increasing consumer demand for cosmetic products that require refrigerated storage and distribution (e.g., cosmetics containing ingredients that are active at low temperatures, such as antioxidants, whitening agents, and skin regenerating agents, and cooling cosmetics.) In order to meet such consumer demands, the present inventors have researched and developed cosmetics that become transparent at refrigerated temperatures. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Korean Patent Publication No. 10-2017-0050413 Summary of the Invention [Problem to be solved by the invention]

[0005] One aspect of the present disclosure is to provide a water-in-silicone composition that is opaque at ambient temperatures and clear at refrigerated temperatures.

[0006] One aspect of the present disclosure is to provide a composition for refrigerated storage, refrigerated distribution, or application to the skin at refrigerated temperatures. [Means for solving the problem]

[0007] A water-in-silicone composition according to one embodiment of the present disclosure comprises an aqueous phase and a silicone phase, and the difference in refractive index between the aqueous phase and the silicone phase at room temperature is 0.003 to 0.004. The composition is opaque at room temperature and transparent at refrigerated temperatures.

[0008] A composition for refrigerated storage, distribution, or application to skin at refrigerated temperatures according to one aspect of the present disclosure comprises the water-in-silicone composition. [Effects of the Invention]

[0009] The water-in-silicone composition according to one embodiment of the present disclosure is opaque at room temperature and transparent at refrigerated temperatures. This property allows the temperature of the composition to be visually confirmed. Furthermore, when used after refrigerated storage, the composition can provide a refreshing and clean feeling to the user, not only in terms of touch but also in terms of vision.

[0010] The water-in-silicone composition according to one embodiment of the present disclosure can be used in cooling products and products that require low temperature storage, distribution and / or use.

[0011] Whether a product to which the water-in-silicone composition according to one embodiment of the present disclosure is applied has been properly stored at refrigerated temperatures can be visually confirmed. In addition, when a product to which the water-in-silicone composition is applied is used after proper storage at refrigerated temperatures, it becomes transparent, providing the user with a cool and refreshing feeling not only to the touch but also to the eye. [Brief explanation of the drawings]

[0012] [Figure 1] Photographs of some example compositions at ambient and refrigerated temperatures. [Figure 2] 1 is a photograph of an example and a comparative example composition at room temperature and refrigerated temperature. [Figure 3]1 is a photograph of an example and a comparative example composition at room temperature and refrigerated temperature. DETAILED DESCRIPTION OF THE INVENTION

[0013] The various embodiments and terms used in this specification should not be understood to limit the technical features described in this specification to specific embodiments, but should be understood to include various modifications, equivalents, or alternatives to the embodiments.

[0014] The present inventors have developed a composition that is opaque at room temperature and becomes clear at refrigerated temperatures.

[0015] One aspect of the present disclosure provides a water-in-silicone (W / S) composition that is opaque at room temperature and transparent at refrigerated temperatures.

[0016] The composition according to one embodiment of the present disclosure has different transparency levels at room temperature and refrigerated temperature, and is particularly transparent at refrigerated temperature. These properties allow the user to visually check the temperature of the composition, and when the composition is used after refrigeration, it can visually provide the user with a refreshing and cool feeling.

[0017] In one embodiment, room temperature is a matter that will be obvious to those skilled in the art, and may be, for example, a temperature of 15 to 25° C. For example, room temperature may be 15° C. or higher, 16° C. or higher, 17° C. or higher, 18° C. or higher, 19° C. or higher, 20° C. or higher, 21° C. or higher, 22° C. or higher, 23° C. or higher, 24° C. or higher, or 25° C. or higher, or may be 15° C. or lower, 16° C. or lower, 17° C. or lower, 18° C. or lower, 19° C. or lower, 20° C. or lower, 21° C. or lower, 22° C. or lower, 23° C. or lower, 24° C. or lower, or 25° C. or lower, or a range combining these.

[0018] In one embodiment, the refrigeration temperature is a matter that will be obvious to those skilled in the art, and may be, for example, a temperature of 2 to 8° C. For example, the refrigeration temperature may be 2° C. or higher, 3° C. or higher, 4° C. or higher, 5° C. or higher, 6° C. or higher, 7° C. or higher, or 8° C. or higher, or 2° C. or lower, 3° C. or lower, 4° C. or lower, 5° C. or lower, 6° C. or lower, 7° C. or lower, or 8° C. or lower, or a combination thereof.

[0019] In one embodiment, the water-in-silicone composition may include an aqueous phase and a silicone phase. The water-in-silicone composition according to one aspect of the present disclosure may be a water-in-silicone emulsion composition in which the aqueous phase is emulsified in the silicone phase.

[0020] The silicone phase may be represented by an oil phase or a silicone oil phase.

[0021] In one embodiment, the difference in refractive index between the aqueous phase and the silicone phase at room temperature may be, but is not limited to, 0.003 or more, or 0.003 to 0.004. For example, the difference in refractive index between the aqueous phase and the silicone phase at room temperature may be 0.003 or more, 0.003 to 0.005, 0.003 to 0.004, 0.003 to 0.0035, or 0.003 to 0.0034.

[0022] In one embodiment, a W / S composition in which the difference in refractive index between the water phase and the silicone phase at room temperature is less than 0.003 and the silicone phase contains a silicone-based compound having a phenyl group is transparent at room temperature but becomes opaque at refrigerated temperatures. A composition that is opaque at refrigerated temperatures is less likely to provide a visually refreshing or cool feeling to the user than a composition that is transparent at refrigerated temperatures.

[0023] Values ​​described as numerical values ​​in this disclosure may allow for a margin of error of around 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, 0.1%, 0.05%, or 0.01%.

[0024] One aspect of the present disclosure provides a water-in-silicone (W / S) composition, which comprises an aqueous phase and a silicone phase, and the difference in refractive index between the aqueous phase and the silicone phase at room temperature is 0.003 to 0.004, making the composition opaque at room temperature and transparent at refrigerated temperatures. The water-in-silicone composition and the difference in refractive index between the aqueous phase and the silicone phase have already been described, so a detailed description thereof will be omitted.

[0025] In one embodiment of the present invention, a W / S composition having a refractive index difference of 0.003 or more between the aqueous phase and the silicone phase at room temperature can reduce the refractive index difference between the aqueous phase and the silicone phase at refrigeration temperatures (e.g., 4°C) by including a silicone compound having a phenyl group in the silicone phase, and ultimately can make a W / S composition that is opaque at room temperature transparent at refrigeration temperatures. This may be due to the fact that, compared to a silicone compound having only methyl groups and no phenyl groups, the silicone compound having a phenyl group exhibits a greater increase in refractive index at refrigeration temperatures (e.g., 4°C) than the aqueous portion (aqueous phase).

[0026] In one embodiment, the silicone phase may include a first silicone-based compound having a phenyl group. The first silicone-based compound may have one or more phenyl groups. In one embodiment, a W / S composition in which the difference in refractive index between the aqueous phase and the silicone phase at room temperature is 0.003 or more and the silicone phase includes a first silicone-based compound having a phenyl group is opaque at room temperature and becomes transparent at refrigerated temperatures.

[0027] In one embodiment, the first silicone-based compound having a phenyl group may be at least one of a dimethicone having a phenyl group or a trimethicone having a phenyl group, but is not limited thereto.

[0028] In one embodiment, the first silicone-based compound having a phenyl group may be a silicone-based compound containing a repeating unit having 1 to 3 phenyl groups, but is not limited thereto.

[0029] In one embodiment, the first silicone-based compound having a phenyl group may be at least one selected from the group consisting of phenyl trimethicone, diphenyl dimethicone, and diphenylsiloxy phenyl trimethicone, but is not limited thereto.

[0030] In one implementation, the refractive index of the water phase at room temperature is greater than the refractive index of the silicone phase.

[0031] In one implementation, the aqueous phase may include, but is not limited to, at least one selected from the group consisting of water, glycerin, and metal salts.

[0032] The metal salt may be at least one selected from the group consisting of magnesium sulfate and sodium chloride, but is not limited thereto.

[0033] In one embodiment, the silicone phase may further include at least one selected from the group consisting of, but not limited to, a second silicone-based compound containing a C1 to C5 alkyl group and a silicone surfactant.

[0034] The second silicone-based compound may not contain a phenyl group.

[0035] The second silicone-based compound may be at least one selected from the group consisting of methyl trimethicone and propyl trimethicone, but is not limited thereto.

[0036] The silicone surfactant may be, but is not limited to, Polyglyceryl-3 Polydimethylsiloxyethyldimethicone.

[0037] In one embodiment, the water-in-silicone composition may be, but is not limited to, a cosmetic composition, a food composition, an oral composition, a non-therapeutic composition, a non-therapeutic oral composition, an external application composition, or a pharmaceutical composition. For example, the composition is a cosmetic composition or an external application composition. For example, the external application composition is a skin external application composition or a hair external application composition.

[0038] In one implementation, the water-in-silicone composition may be free of polyethylene glycol (PEG) surfactants, such as, but not limited to, at least one selected from the group consisting of PEG-6 caprylic / capric glycerides and PEG-8 caprylic / capric glycerides.

[0039] In one embodiment, the water-in-silicone composition may not contain dimethicone with a viscosity of 100 cs or less. For example, the dimethicone with a viscosity of 100 cs or less may be, but is not limited to, at least one of dimethicone 6 cs and dimethicone 10 cs. The viscosity may be measured at 25°C.

[0040] In one implementation, the temperature of the water-in-silicone composition can be visually determined, allowing a user to easily determine whether the water-in-silicone composition is stored or distributed refrigerated.

[0041] In one implementation, the water-in-silicone composition may be for application to the skin at refrigerated temperatures.

[0042] In one embodiment, the water-in-silicone composition may be applied to, but is not limited to, refrigerated cosmetics, cosmetics containing ingredients that require low-temperature storage and / or distribution (e.g., lotions, serums, emulsions, etc.) Products incorporating the water-in-silicone composition according to one embodiment of the present disclosure may provide users with a cool, refreshing feeling, not only tactilely but also visually, when used after refrigerated storage.

[0043] Another aspect of the present invention provides a composition for refrigerated storage, refrigerated distribution, or application to the skin at refrigerated temperatures, comprising the water-in-silicone composition described above.

[0044] In one embodiment, the composition for refrigerated storage, refrigerated distribution, or skin application at refrigerated temperatures may be, but is not limited to, a cosmetic composition, a food composition, an oral composition, a non-therapeutic composition, a non-therapeutic oral composition, an external application composition, or a pharmaceutical composition. For example, the composition is a cosmetic composition or an external application composition. For example, the external application composition is a skin external application composition or a hair external application composition.

[0045] For example, a composition for refrigerated storage, refrigerated distribution, or application to the skin at refrigerated temperatures may be, but is not limited to, a cooling cosmetic composition, a cosmetic composition containing ingredients that require low temperature storage and / or low temperature distribution.

[0046] Furthermore, one aspect of the present invention provides the use of the aforementioned water-in-silicone composition for preparing a cosmetic composition that is opaque at room temperature and transparent at refrigerated temperatures.

[0047] Another aspect of the present invention provides the use of the water-in-silicone composition described above for the preparation of a composition for refrigerated storage, refrigerated distribution, or application to the skin at refrigerated temperatures.

[0048] The water-in-silicone composition, refrigeration temperature, etc. have been described above, so a detailed explanation will be omitted.

[0049] In one implementation, the composition for refrigerated storage, refrigerated distribution, or application to skin at refrigerated temperatures may be a cosmetic composition.

[0050] Furthermore, one aspect of the present invention is a method for determining whether a composition has been stored or distributed at refrigerated temperatures, comprising: The composition has the water-in-silicone composition formulation described above, determining that the composition is clear when stored or distributed at refrigerated temperatures.

[0051] In one embodiment, the composition may be, but is not limited to, a cosmetic composition, a food composition, an oral composition, a non-therapeutic composition, a non-therapeutic oral composition, an external application composition, or a pharmaceutical composition.

[0052] In one implementation, it is advantageous to be able to visually determine whether the water-in-silicone composition is clear.

[0053] Furthermore, one aspect of the present invention provides a method for preparing a cosmetic composition that is opaque at room temperature and transparent at refrigerated temperatures, comprising the step of preparing the water-in-silicone composition described above.

[0054] In one implementation, a cosmetic composition that is opaque at ambient temperatures and clear at refrigerated temperatures may require refrigerated storage, refrigerated distribution, or application to skin at refrigerated temperatures.

[0055] The present invention will be described in detail below with reference to examples, which are provided to aid in understanding the present invention and are not intended to limit the scope of the present invention.

[0056] 1. Preparation of Water-in-Silicone Composition Water-in-silicone compositions were prepared using the ingredients and composition ratios listed in Table 1 below. Specifically, the ingredients listed in the silicone part of Table 1 were weighed out, and then pre-dispersed by homomixing (6000 rpm, 3 minutes) to prepare the silicone part composition. The ingredients listed in the water part of Table 1 were weighed out, and then mixed and thoroughly dissolved to prepare the water part composition. The water part composition was added to the pre-dispersed silicone part composition, and then homomixed (6000 rpm, 3 minutes). The mixture was then degassed to prepare the water-in-silicone compositions of the examples and comparative examples (Examples 1-2, Comparative Examples 1-4). The refractive indices of the water part and silicone part in Table 1 below were measured using an ATAGO ABBE Refractometer.

[0057] [Table 1]

[0058] Examples 1 and 2 are compositions containing silicone having a phenyl group in the silicone moiety, and the difference in refractive index between the water portion and the silicone portion is 0.003 to 0.004. Comparative Examples 1, 3, and 4 are compositions containing silicone having a phenyl group in the silicone moiety, but the difference in refractive index between the water portion and the silicone portion is outside the range of 0.003 to 0.004 (compositions of about 0.0004 to 0.002). Comparative Example 2 is a composition in which the difference in refractive index between the water portion and the silicone portion is within the range of 0.003 to 0.004, but does not contain silicone having a phenyl group in the silicone portion.

[0059] 2.Evaluation of transparency due to temperature changes For each of the Examples and Comparative Examples prepared in "1. Preparation of Water-in-Silicone Compositions" above, the transparency at refrigerated temperatures and at room temperature was confirmed. Specifically, each of the compositions of the Examples and Comparative Examples was left at room temperature (25°C) for 1 hour to allow each composition to reach room temperature (25°C), and then the transparency was visually confirmed. Additionally, each of the compositions of the Examples and Comparative Examples was stored in a refrigerator to allow each composition to reach the refrigerated temperature (4°C), and then the transparency was visually confirmed.

[0060] As a result, Examples 1 and 2, which contained silicone having a phenyl group in the silicone moiety and in which the difference in refractive index between the water portion and the silicone portion was 0.003 to 0.004, were opaque at room temperature and transparent at refrigerated temperatures (Figures 1 and 2). On the other hand, Comparative Example 4, which contained silicone having a phenyl group in the silicone moiety but in which the difference in refractive index between the water portion and the silicone portion was smaller than 0.003 to 0.004, was transparent at room temperature and opaque at refrigerated temperatures (Figure 3). Similar to Comparative Example 4, Comparative Examples 1 and 3, which contained silicone having a phenyl group in the silicone moiety but in which the difference in refractive index between the water portion and the silicone portion was smaller than 0.003 to 0.004, were transparent at room temperature (Figure 2). On the other hand, Comparative Example 2, which did not contain silicone having a phenyl group in the silicone moiety but in which the difference in refractive index between the water portion and the silicone portion was 0.003 to 0.004, was opaque at room temperature and remained opaque, with no change in transparency even at refrigerated temperatures.

[0061] The compositions of the examples are opaque at room temperature and become transparent at refrigerated temperatures, allowing users to visually check the temperature. Furthermore, since the compositions of the examples become transparent at refrigerated temperatures, when used after refrigerated storage, they can provide users with a refreshing and clean feeling not only by touch but also visually.

Claims

1. A water-in-silicone (W / S) composition, the composition comprises an aqueous phase and a silicone phase; the difference in refractive index between the aqueous phase and the silicone phase at room temperature is 0.003 to 0.004; A water-in-silicone composition that is opaque at room temperature and clear at refrigerated temperatures.

2. 10. The water-in-silicone composition of claim 1, wherein the silicone phase comprises a first silicone-based compound having a phenyl group.

3. 3. The water-in-silicone composition according to claim 2, wherein the first silicone compound having a phenyl group is at least one of a dimethicone having a phenyl group or a trimethicone having a phenyl group.

4. 3. The water-in-silicone composition according to claim 2, wherein the first silicone compound having a phenyl group is a silicone compound containing a repeating unit having 1 to 3 phenyl groups.

5. 3. The water-in-silicone composition according to claim 2, wherein the first silicone compound having a phenyl group is at least one selected from the group consisting of phenyl trimethicone, diphenyl dimethicone, and diphenylsiloxyphenyl trimethicone.

6. 2. The water-in-silicone composition of claim 1, wherein the refractive index of the water phase at ambient temperature is greater than the refractive index of the silicone phase.

7. 10. The water-in-silicone composition of claim 1, wherein the aqueous phase comprises at least one selected from the group consisting of water, glycerin, and metal salts.

8. 2. The water-in-silicone composition of claim 1, wherein the silicone phase comprises at least one selected from the group consisting of a second silicone-based compound comprising a C1 to C5 alkyl group and a silicone surfactant.

9. 9. The water-in-silicone composition of claim 8, wherein the silicone surfactant is polyglyceryl-3 polydimethylsiloxyethyl dimethicone.

10. The water-in-silicone composition of claim 1 , wherein the composition is a water-in-silicone cosmetic composition.

11. 10. The water-in-silicone composition of claim 1, wherein the composition is free of polyethylene glycol (PEG) based surfactants.

12. 10. The water-in-silicone composition of claim 1, wherein the composition is free of at least one of dimethicone 6cs and dimethicone 10cs.

13. 2. The water-in-silicone composition of claim 1, wherein the composition can be visually inspected to determine whether it has been refrigerated or distributed.

14. 10. The water-in-silicone composition of claim 1, wherein the composition is for application to the skin at refrigerated temperatures.

15. A composition for refrigerated storage, distribution, or application to skin at refrigerated temperatures, comprising the water-in-silicone composition of any one of claims 1 to 14.

16. 16. The composition for refrigerated storage, refrigerated distribution, or application to skin at refrigerated temperatures according to claim 15, wherein the composition for refrigerated storage, refrigerated distribution, or application to skin at refrigerated temperatures is a cosmetic composition.

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