KR102247054B1 - Cosmetic composition comprising color changeable capsule - Google Patents

Abstract

The present invention relates to a cosmetic composition comprising a microcapsule capable of changing color by the application of an electric field or a combination of an electric field and a magnetic field, wherein the skin of a user is affected by an externally applied electric field and/or a magnetic field. It relates to a cosmetic composition capable of implementing a variety of color variable effects without applying.

Description

Cosmetic composition containing color variable capsule. {COSMETIC COMPOSITION COMPRISING COLOR CHANGEABLE CAPSULE}

The present invention relates to a cosmetic composition containing a capsule that implements a multi-color variable color by a magnetic or electric field, and more particularly, the color and color by movement of one or more particles dispersed in a dispersion solution contained in the capsule. It relates to a cosmetic composition comprising a color variable capsule capable of implementing a multi-color by varying the tone.

In general, for the manufacture of color cosmetics, various dyes and pigments are added to realize a desired color. In color cosmetics, most desired colors can be realized by developing various dyes or pigments, but this is a product that implements only one color and cannot produce a color change effect that realizes various colors.

As for cosmetics exhibiting a color-variable effect, for example, in Korean Patent Laid-Open No. 10-2012-0131621, the expiration period of the cosmetics can be set by controlling the time point at which the intrinsic color of the natural pigment contained in the cosmetic composition changes. It allows consumers to visually check the expiration of cosmetics. However, such prior art cannot return to the original color because the color changes, but only causes color change over time.

In other words, most of the color-variable materials being developed have to be accompanied by a change in pH or temperature, and there are various restrictions in direct application to cosmetics, so there is a limit to the application field.

Korean Patent Application Publication No. 10-2012-0131621

The present invention was devised in view of the prior art as described above, and a cosmetic comprising a color-variable capsule capable of implementing various colors and tones by moving particles in the capsule by the application of any one of an electric field or a magnetic field or a combination thereof. Its purpose is to provide a composition.

The cosmetic composition of the present invention for solving the above problems is characterized in that it comprises a microcapsule capable of changing color by the application of any one of an electric field or a magnetic field, or a combination thereof.

At this time, the microcapsules include one or more particles having a specific color and a dispersion solution for dispersing the particles, and the microcapsules may be dispersed in a medium.

The dispersion solution may be a transparent solution or a colored solution, and the particles may be magnetic particles, charged particles, or a mixture of magnetic particles and charged particles.

In addition, the magnetic particles may include any one or more of iron (Fe), nickel (Ni), or cobalt (Co), and the charged particles are titanium oxide (TiO ₂ ) or zirconium oxide (ZrO _{2 ).} ) May include any one or more oxides.

In addition, the particles may have bistable properties in the dispersion solution upon application of an electric field.

In addition, the cosmetic composition is applied on a substrate, and the medium may or may not be dried. Therefore, the medium is evaporated and solidified on the substrate, thereby forming a matt surface or not drying to form a glossy surface. Can also be formed.

At this time, the medium may be either ethanol or methylpyrrolidone, or a mixture thereof, and may be any one of glycerin and propylene glycol, or a mixture thereof.

The cosmetic composition according to the present invention can realize various colors and tones by moving the particles in the capsule by the application of an electric field or a combination of an electric field and a magnetic field, thereby exhibiting the effect of realizing the multicolor of the cosmetic composition.

In addition, since the application of an electric field or a combination of an electric field and a magnetic field can cause a color-variable effect, it is possible to implement multicolor without any stimulation to the user's skin.

1 is a conceptual diagram showing a principle (a) and a color (b) implemented by the cosmetic composition of the present invention driven by the application of an external electromagnetic field.
FIG. 2 is a conceptual diagram showing the principle of driving a microcapsule and a color implemented by the application of an external electromagnetic field when a transparent solution is used as a dispersion solution, and the driving principle of the microcapsule including white particles and colored particles (a) , Implementation color (b) and a conceptual diagram showing the driving principle (c) and implementation color (d) of the microcapsule including two kinds of colored particles.
3 is a conceptual diagram showing the principle of driving the microcapsule and the color implemented by the application of an external electromagnetic field when a colored solution is used as a dispersion solution, and the driving principle of the microcapsule including one type of particle (a), It is a conceptual diagram showing the implementation color (b) and the driving principle (c) and the implementation color (d) of the microcapsule including two kinds of particles.
4 is a conceptual diagram showing the principle of driving the microcapsule and the color implemented by the application of an external electric field. The driving principle of the microcapsule including one type of particle (a), the implementation color (b), and two types of particles It is a conceptual diagram showing the driving principle (c) and implementation color (d) of the microcapsule including.
FIG. 5 is a conceptual diagram showing the driving principle and implemented color of a microcapsule in which one type of magnetic particle and two types of charged particles are mixed. Yellow (a), red (b), green (c), and purple (d) ) It is a conceptual diagram showing the process of implementing color.

Hereinafter, the present invention will be described in detail.

The cosmetic composition of the present invention is characterized in that it comprises microcapsules capable of changing color by application of an electric field or a combination of an electric field and a magnetic field.

The microcapsules contain one or more particles of colored particles, white particles, or black particles having a specific color in the capsule wall, and a dispersion solution for dispersing the particles.

This is as shown in FIG. 1, and the microcapsules are applied to the surface of the substrate and cured while being dispersed in the medium, thereby being laminated on the substrate.

In this case, the substrate may be a film, a sheet, etc. as a product manufactured by applying the cosmetic composition, or may be a surface constituting the human body such as skin to which the cosmetic composition is applied. The cosmetic composition applied to the substrate as described above can implement a variety of colors and tones by the application of an externally applied electric field and/or a magnetic field, so that a so-called multicolor can be realized in which the color and tone are changed in one product.

As shown in FIG. 1, when the dispersion solution contained in the microcapsule is a red solution and contains white particles, particles may be collected on the upper or lower portion of the microcapsule by application of an electric field or a combination of an electric field and a magnetic field. By not applying an electromagnetic field, it is possible to maintain a dispersed state.In this case, when viewed from the surface, when the white particles are ubiquitous under the microcapsule, a dark red color is displayed, and in a dispersed state, a light red color is displayed. , When the white particles are ubiquitous on the top of the microcapsules, a very light red color is displayed, so that a different tone can be used for one color.

Using the microcapsules of the present invention, unlike the conventional color cosmetics mixed with various dyes and pigments to realize only one color, it is possible to implement a variety of colors in one product, accompanied by a change in pH or temperature. Unlike color-variable materials, it is possible to implement a color-variable effect without irritating the skin at all, so it can be applied to various color cosmetics.

That is, as described above, when the substrate to which the cosmetic composition is applied is made of skin or nails, the existing color-variable material accompanying a change in pH or temperature cannot be applied because it may cause skin irritation. Since the cosmetic composition according to the above can realize a desired color and tone only by applying either an electric field or a magnetic field or a combination thereof for an extremely short period of time after being applied to the skin, the range of applications can be very wide.

For these various applications, a transparent solution or a colored solution may be applied to the dispersion solution contained in the microcapsules, and magnetic particles, charged particles, or a mixture of magnetic particles and charged particles may be applied as the particles. .

The magnetic particles are any one or more of iron (Fe), nickel (Ni), or cobalt (Co), and the particles move in the microcapsules by the application of an external magnetic field, so the color or color as described above It can cause a change in tone.

In addition, the charged particles may _{include any one or more oxides of titanium oxide (TiO 2} ) or zirconium oxide (ZrO ₂ ), and the particles move within the microcapsules by the application of an external electric field. It can cause a change in color or tone as shown.

The charged particles are materials that may have bistableness in the dispersion solution by the application of an electric field, and since they are in an equilibrium state, color variation can be stably caused.

In addition, since the particles must be stably dispersed in the dispersion solution, the particle size is preferably 50 to 1,000 nm, preferably 100 to 500 nm, more preferably 100 to 300 nm, and thus exhibits a uniform size. Do.

In addition, in order to prevent the particles from being well dispersed and agglomerated in the dispersion solvent, the surface of the particles may be coated with an electric charge of the same sign. It may be coated with a material or mixed with a material having a different specific gravity and the particle in a solvent.

In addition, the particles are configured to exhibit a specific color by reflecting light of a specific wavelength, and more specifically, it may be made to exhibit a specific color by controlling the oxidation number or coating such as inorganic pigments or pigments. For example, as the inorganic pigment coated on the particles according to the present invention, Zn, Pb, Ti, Cd, Fe, As, Co, Mg, Al, etc. including a chromophore may be used in the form of oxides, emulsions, and sulfates. , As the dyes coated on the particles according to the present invention, fluorescent dyes, acid dyes, basic dyes, mordant dyes, sulfur dyes, bat dyes, disperse dyes, reactive dyes, and the like may be used.

In addition, the microcapsules are aginate, gelatin, ethyl cellulose, polyamide, melamine-formaldehyde resin, poly(vinyl pyridine) , Polystyrene (polystyrene), resin containing urethane bonds, and polymethyl methacrylate (polymethyl methacrylate) by constituting the capsule wall with at least one transparent polymer to realize the color by the particles or dispersion solvent contained therein. The particles can be stably collected. Such microcapsules include microcapsules disclosed in Korean Patent Publication No. 10-2017-0124028 developed by the applicant, or Korean Patent Publication Nos. 10-2015-0031197, 10-2015-0017796, and 10-2015-0020491. All of the disclosed microcapsules can be used, and since they can be applied to both an electrophoretic method or a magnetic field application method, all of the electromagnetic fields applied from the outside can be reacted.

In addition, the cosmetic composition is applied on a substrate, and the medium may or may not be dried. Once applied, the medium evaporates and solidifies on the substrate to form a matte surface, and dry If it is not maintained, a glossy surface can be formed.

The medium to be dried may include ethanol or methylpyrrolidone, or a mixture thereof, and the medium to be dried may include any one of glycerin and propylene glycol, or a mixture thereof.

The cosmetic composition according to the present invention can implement various types of color changing effects by containing the microcapsules as described above.

In Fig. 2, a microcapsule in which a transparent solution is used as a dispersion solution is illustrated. An external electric field, a magnetic field, or an electromagnetic field is applied to the microcapsule, and the particles are moved by the electromagnetic field locally applied from the outside to be localized in any part of the microcapsule. Through this, the color change phenomenon can be visually observed in the direction the user observes.

That is, in the case of a microcapsule including white particles and colored particles as shown in FIG. 2(a), red particles reacting to an electric or magnetic field may be ubiquitous in the upper or lower part of the microcapsule depending on the direction in which it is applied. Through this, the tone of the red color is changed by the white particles contained in the microcapsules. This causes the effect of making the tone darker or softer than the state in which the red particles and white particles are mixed.

In addition, as shown in FIG. 2(b), when two kinds of colored particles are included, not only a change in tone but also a change in color may be caused. That is, by applying an electric field and a magnetic field to one particle reacting to an electric field and another particle reacting to a magnetic field at the same time, or by applying a magnetic field to two particles having different polarities, the particles are localized above or below the microparticles. It can be done, and accordingly, a color different from the mixed state is implemented.

In addition, FIG. 3 illustrates a case where a colored solution is used as a dispersion solution.

When the microcapsule contains one type of particle, the red solution changes its tone due to the ubiquitous distribution of white particles contained in the microcapsule. That is, when the white particles are ubiquitous under the microcapsules, a dark red color is implemented, and when they are ubiquitous on the top of the microcapsules, the lightest red color is realized (Figs. 3(a) and (b)).

In addition, when white particles and yellow particles are mixed in the red solution, white particles and yellow particles may be ubiquitous in different directions as shown in FIG. 3(c), and in this case, yellow particles as shown in FIG. 3(d). The color and tone are changed from to red, so it is possible to implement various colors.

In addition, by varying the applied energy into an electric field and a magnetic field, various color variable effects can be implemented.

4 illustrates the principle of driving the microcapsule by the application of an external electric field and the color implemented. In the case of a microcapsule containing one type of particle in the red solution, as shown in Fig. 4(a), the location of the white particles may be changed according to the change of the pole to which the electric field is applied, and the white particles May be unevenly distributed somewhere in the middle of the microcapsule, not in the upper or lower part. Through this, the tone of the red color can be changed as shown in FIG. 4(b).

In addition, in the case of the microcapsules including white particles and yellow particles, as in FIG. 4(c), the uneven locations of the white particles and yellow particles change according to the change of the pole to which the electric field is applied, as in FIG. 4(d). Likewise, when yellow particles are ubiquitous on the top of the microcapsules, yellow color is realized, but when white particles are ubiquitous on the top of the microcapsules, yellow color does not appear at all, and a light red color can be realized.

In addition, magnetic particles and charged particles may be mixed as the particles, which may exemplify a microcapsule in which one type of magnetic particle and two types of charged particles are mixed as shown in FIG. 5. That is, blue particles as magnetic particles, yellow particles as (-) charged particles, and red particles as (+) charged particles are exemplified. When a magnetic field is applied to the lower part while applying an electric field, the particles become ubiquitous and a yellow color is displayed as shown in Fig. 5(a). A (-) electric field is applied to the upper part of the microparticles, and a (+) electric field is applied to the lower part. When a magnetic field is applied, a red color is displayed as in FIG. 5(b), and when a (+) electric field is applied to the top of the microparticles, and a (-) electric field is applied to the bottom, a magnetic field is applied to the top, as shown in FIG. 5(c). As shown in Fig. 5(d), a green color is displayed by mixing yellow particles and blue particles as shown in FIG. 5(d) when a (-) electric field is applied to the top of the microparticles, and a (+) electric field is applied to the bottom of the microparticles. Likewise, purple color is displayed by mixing red particles and blue particles.

By mixing various particles as described above, it is possible to implement various color variable effects by applying an electric and/or magnetic field.

After applying the cosmetic composition containing the microcapsule of the present invention to the skin, the color change effect is generated by applying an electric field or a combination of electric and magnetic fields from the outside, so that the user can select various shades as needed. , It is possible to realize multi-color through the color change effect without causing any skin irritation.

Although the present invention has been described with reference to a preferred embodiment as described above, it is not limited to the above embodiment, and various modifications and changes can be made by a person skilled in the art without departing from the spirit of the present invention, and such modifications and changes Examples are to be viewed as falling within the scope of the invention and the appended claims.

Claims (10)

It includes a microcapsule capable of changing color by application of an electric field or a combination of an electric field and a magnetic field,
The microcapsules,
At least one magnetic particle that responds to the magnetic field; And
Includes; at least one or more charged particles reacting to the armature,
The magnetic particles and the charged particles are particles of different colors,
When a magnetic field is applied, the first color by the magnetic particles is displayed, and when an electric field is applied, a second color by the charged particles is displayed. Cosmetic composition, characterized in that it exhibits a third color by.
The method according to claim 1,
The microcapsules contain one or more particles having a specific color and a dispersion solution for dispersing the particles,
The cosmetic composition, characterized in that the microcapsules are dispersed in a medium.
The method according to claim 2,
Cosmetic composition, characterized in that the dispersion solution is a transparent solution or a colored solution.
The method according to claim 1,
The microcapsule contains (-) charged particles and (+) charged particles,
The (-) charged particles, the (+) charged particles, and the magnetic particles are all particles of different colors,
A cosmetic composition, characterized in that the color that appears when a (+) electric field is applied to the top and a (-) electric field is applied to the bottom, and the color that appears when a (-) electric field is applied to the top and a (+) electric field is different from each other.
The method according to claim 1,
The magnetic particle is a cosmetic composition, characterized in that it contains any one or more elements of iron (Fe), nickel (Ni), or cobalt (Co).
The method according to claim 1,
The charged particle is a cosmetic composition, characterized in that it contains any one or more oxides of _{titanium oxide (TiO 2} ) or zirconium oxide (ZrO _{2 ).}
The method according to claim 2,
The cosmetic composition, characterized in that the particles have bistableness in the dispersion solution upon application of an electric field.
The method according to claim 2,
The cosmetic composition is applied on a substrate,
Cosmetic composition, characterized in that the medium is dried or not dried.
The method according to claim 2,
The cosmetic composition is applied on a substrate,
The medium is a cosmetic composition, characterized in that any one of ethanol or methylpyrrolidone, or a mixture thereof.
The method according to claim 2,
The cosmetic composition is applied on a substrate,
The medium is a cosmetic composition, characterized in that any one of glycerin, propylene glycol, or a mixture thereof.

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