WO2017092637A1 - Color changing capsule - Google Patents

Abstract

A color changing capsule comprises a capsule filling and capsule shell. The capsule filling comprises a material including microcapsules having a first color powder. The capsule shell comprises a material including microcapsules having a second color powder. The microcapsules having the first color powder are collected and made into the capsule filling. The capsule filling is then arranged on a spray plate for coating with the microcapsules having the second color powder to form the capsule shell, thereby obtaining the color changing capsule.

Description

Color changing capsule Technical field

The invention belongs to the technical field of cosmetics, and in particular relates to a color changing capsule.

Background technique

As is well known, microcapsules refer to a solid particulate product prepared by embedding a core material, which has been used in many fields as a popular technology in recent years. For improving the stability of the core material itself, for improving the matching degree of the core material in the application environment, for masking the true color and odor of the core material, or for achieving timing, fixed-point control and release effects, etc. .

The existing cosmetic products, the color which is presented on the skin during use, is mostly the color of the appearance of the product; if the existing BB cream product is applied on the skin, the color is the ivory white presented by the appearance of the skin. To light brown, there is no unexpected color change effect for consumers. Not only that, because the matching degree in the cosmetic system is not high, the application of some pigments and powders is limited; if some pigments and powders are hydrophilic substances, there is a problem of mismatch in the lipophilic base. In turn, the powder and the pigment are poorly dispersed in the oily base, the color is slow, and the color is unstable, which directly leads to the occurrence of "floating white" and flower makeup, and there are certain defects.

Summary of the invention

In view of the above-mentioned deficiencies of the prior art, the present invention is directed to the prior art cosmetic products that do not have a color-changing effect, and some of the pigments and powders do not match the cosmetic base materials, and are liable to cause slow color display, unstable color, "whitening" and The technical problem of the makeup phenomenon is to provide a color-changing capsule which has both a color-changing effect and a matching pigment and powder with a cosmetic base.

In order to solve the above technical problem, the present invention adopts the following technical solution: a color changing capsule comprising a pellet core and a pellet shell; wherein the pellet core material comprises microcapsules containing the toner 1 and the pellet shell material comprises microcapsules containing the toner 2 By dispersing the microcapsules containing the toner 1 as a pellet core, a microcapsule containing the toner 2 was spray-disposed on the pellet core to obtain a color-changing capsule as a pellet. Wherein, both the toner 1 and the toner 2 comprise one or more of an inorganic toner and an organic lake, and the color of the toner 1 is different from the color of the toner 2.

Compared with the prior art, the present invention has the following beneficial effects:

1. The color changing sunscreen microcapsule of the invention adopts the microcapsule technology to embed the toner, the sunscreen agent and the active ingredient, so that the immersion in the cosmetic base material is not adversely affected by the base material environment, and the toner is effectively protected. , sunscreens and active ingredients The nature of the material does not cause the core material to leak or directly expose to the cosmetic base to cause coloration of the base.

2. The color-changing capsules prepared by the invention can be swollen and softened in different cosmetic substrates, but does not cause dissolution, damage to the shape, leakage of the core of the capsule; the color-changing capsule which swells and softens in the cosmetic matrix is subjected to the outside world. When the friction is applied, the capsule structure can be destroyed, and the core material leaks out, so that the core and the shell are evenly mixed, and the inner and outer colors are mixed to achieve a color changing effect, and synergistically exerts the effects of moisturizing the skin, covering and protecting the sun.

3. The color changing capsule of the invention masks the true color of the pellet core through the microcapsule technology; when the capsule structure is destroyed by the application, the color of the core powder is instantly displayed, and the stable color is obtained within 10s. Color, bringing unexpected color effects to consumers.

4. The microcapsule technology of the invention can enclose pigments having high affinity for the cosmetic substrate, thereby avoiding the problem of coloring of the base material.

5. The invention has no oleophilic and hydrophilic properties on the encapsulated core material; and the hydrophilic surface treatment or hydrophobic surface treatment of the toner, sunscreen and active ingredients can be used to make the toner, sunscreen and activity The ingredients can be stably dispersed in various cosmetic bases, which improves the matching degree between the powder and the cosmetic base, and broadens the application surface.

6. The color-changing capsule of the invention achieves the effects of discoloration, slow release of the active ingredient and improvement of the SPF sun-protection value through the synergistic action of the toner, the sunscreen and the active ingredient.

detailed description

The present invention will be further described in detail below with reference to the examples, and the materials used in the following examples are commonly used commercially available products unless otherwise specified.

Example 1: A color-changing capsule, the formulation of which is shown in Table 1.

The diameter of the color-changing capsule of this embodiment is controlled to be 100 to 200 μm.

Table 1 color capsule composition table

ingredient	Parts by weight
Iron oxide red	4.5
Iron oxide yellow	12.5
Iron oxide black	3
Titanium dioxide	43
Zinc oxide	20
Polyethylene glycol 600	5
1,3-butanediol	5

Vitamin E	1
Ethyl cellulose	2.5
Hydroxypropylmethylcellulose	2.5
Polydimethylsiloxane	1

As shown above, the present embodiment uses ethyl cellulose and hydroxypropyl methylcellulose as a composite wall material; wherein ethyl cellulose is a water-insoluble film-forming agent which can be dissolved in an aqueous solution of 70% or more ethanol. It can also be dissolved in some oils such as castor oil. Hydroxypropyl methylcellulose is a water-soluble film-forming material that does not dissolve in oil but is soluble in 70% aqueous ethanol. Therefore, a 70% aqueous solution of ethanol was selected as a co-solvent for ethyl cellulose and hydroxypropyl methylcellulose. By adjusting the ratio of ethyl cellulose and hydroxypropyl methylcellulose, and adding a plasticizer, the wall material of the present embodiment can be swollen and softened in the cosmetic base and does not dissolve.

All the toners and powders in this embodiment are treated by hydrophobic surface of polydimethylsiloxane. The color changing capsules of this embodiment are specifically prepared by the following preparation methods:

(1) Ethylcellulose and hydroxypropylmethylcellulose are weighed in a mass ratio of 1:1, mixed and dissolved in an aqueous solution of 70% by mass in ethanol, and mixed uniformly; (the amount of solvent used can be The dissolution is prevailing, mainly for the preparation of a homogeneous solution, so that subsequent spray drying can be carried out, and the solid content is 35%).

(2) to the step (1) mixed homogeneous solution, adding plasticizer PEG600 and 1,3-butanediol to make a capsule wall material solution (A);

(3) Adding the active ingredient vitamin E to the capsule wall material solution (A), and then adding the polydimethylsiloxane-treated toner 1 (mixed toner of iron oxide red, iron oxide yellow and iron oxide black) Stir well, so that the ingredients are homogeneously dispersed in the wall material solution to obtain a suspension (B). The solid content of the suspension (B) is about 35%.

(4) The suspension (B) was spray-dried by a spray drying method to obtain a microcapsule 1 (C), and the microcapsule 1 (C) was controlled to have a diameter ranging from 10 to 20 μm.

(5) Using a suspension (B) as a binder, using a fluidized bed tangential spray pelleting machine, spray drying the suspension (B) onto the microcapsule 1 (C) to make the microcapsule 1 (C) Agglomerated into particles (E) having a diameter of 70-150 microns;

(6) a suspension (F) of a polydimethylsiloxane-treated toner 2 (titanium dioxide and zinc oxide) is obtained in the same manner as in the steps (1), (2) and (3), A suspension (F) spray disk was applied to the granules (E) to form a white outer shell, and a color-changing capsule (G) having a diameter of about 100 to 200 μm was obtained.

The color-changing capsule (G) has a near-white fine particle and can be directly dispersed into the underlying silicone water-in-oil emulsion. The color-changing capsule (G) becomes soft after being soaked in the emulsion base for several days, but the shape remains intact, so that the consumer does not feel the graininess at all when the coating is broken. After the discoloration capsule (G) is applied to destroy the structure, the package is released instantaneously. Toner, the toner contained in the capsule and the pellet core works together, and the skin is quickly mixed to give a flesh color to achieve a discoloration effect; not only that, but also a titanium dioxide and zinc oxide having a sunscreen effect, and The nutrient vitamin E brings sunscreen and moisturizes the skin. All the toners in this embodiment are hydrophobically treated by polydimethylsiloxane, and have excellent compatibility with the water-in-silicone emulsion, so that the toner can be stably dispersed in the emulsion to cause discoloration. The blending effect can be done quickly and evenly, with excellent color and hiding power.

Example 2 A BB cream emulsion containing a color-changing capsule G, and the composition of the specific ingredients is shown in Table 2.

The color-changing capsule (G) of the above Example 1 was added to a water-in-silicone BB cream emulsion.

Table 2 ingredients and formula

Example 3 A color-changing capsule, the specific composition of which is shown in Table 3.

The diameter of the color-changing capsule of this embodiment is controlled to be 300 to 400 μm.

Table 3 color capsule composition table

ingredient	Parts by weight
Chromium oxide	6
Chromium hydroxide	10
Iron oxide yellow	twenty three
Titanium dioxide	30
Polypropylene glycol	6
Pentylene glycol	4
Vitamin E	2
Sodium hydroxymethyl cellulose	3.5
Glucan	2.5

Polydimethylsiloxane

1

All the toners and powders in this embodiment are treated by hydrophobic surface of polydimethylsiloxane. The color changing capsules of this embodiment are specifically prepared by the following preparation methods:

(1) Weigh hydroxymethylcellulose sodium and dextran, mix and dissolve in a 60% aqueous solution of ethanol, and mix well; (The amount of solvent used is soluble, mainly for uniform preparation) The solution is allowed to be spray dried afterwards).

(2) to the step (1) mixed homogeneous solution, adding polypropylene glycol and pentanediol to form a capsule wall material solution (H);

(3) adding the active ingredient vitamin E to the capsule wall material solution (H), and then adding the toner 1 (mixed toner of chromium oxide and chromium hydroxide) treated with polydimethylsiloxane, and stirring uniformly. The components were homogeneously dispersed in the wall material solution to obtain a suspension (I) having a solid content of about 34%.

(4) The suspension (I) is spray-dried by a spray drying method to obtain a microcapsule 1 (J) having a diameter of about 15 to 25 μm.

(5) Using a suspension (I) as a binder, using a fluidized bed tangential spray pelleting machine, spray drying the suspension (I) onto the microcapsule 1 (J) to make the microcapsule 1 (J) Agglomerated into particles (K) having a diameter of 100 to 140 microns;

(6) A suspension of the polydimethylsiloxane-treated toner 2 (titanium dioxide and iron oxide yellow) was obtained in the same manner as in the steps (1), (2) and (3). The suspension (L) spray disk was applied to the granules (K) to form a pale yellow outer shell to obtain a color-changing capsule (M) having a diameter of about 300 to 450 μm.

The color changing capsule shell prepared in this embodiment is light yellow, and the pellet core is green. When the color changing capsule of the embodiment is applied by external friction, the capsule structure is destroyed, the core material is leaked, and the pellet core and the pellet material are mixed. Uniform, internal and external color mixing, discoloration into a light yellow-green mixture, achieving a color change effect. The color changing capsule of this embodiment can be added to the eye shadow for use.

Example 4 A color-changing capsule, the formulation of which is shown in Table 4.

The color-changing capsule of this embodiment has a diameter of 400 to 600 μm.

Table 4 color capsule composition table

ingredient	Parts by weight
Ultramarine blue	6
Prussian Blue	11
muscovite	30
Quercus	28
glycerin	7
Sorbitol	3

Vitamin E	1
Povidone	3
Hydroxyethyl methyl cellulose	3
Polydimethylsiloxane	2

All the toners and powders in this embodiment are treated by hydrophobic surface of polydimethylsiloxane. The color changing capsules of this embodiment are specifically prepared by the following preparation methods:

(1) mixing povidone and hydroxyethyl methylcellulose in an aqueous solution of 55% by mass of ethanol; (the amount of solvent used is soluble, mainly for formulation into a homogeneous solution, Subsequent spray drying).

(2) to the step (1) mixed homogeneous solution, adding glycerin and sorbitol to make a capsule wall material solution (N);

(3) adding the active ingredient vitamin E to the capsule wall material solution (N), and then adding the mixed toner of the toner 1 (cyan blue and Prussian blue) treated with the polydimethylsiloxane, and stirring uniformly. The ingredients were homogeneously dispersed in the wall material solution to obtain a suspension (O) having a solids content of about 34%.

(4) The suspension (O) was spray-dried by a spray drying method to obtain a microcapsule 1 (P) having a diameter of about 30 to 50 μm.

(5) Using a suspension (O) as a binder, using a fluidized bed tangential spray pelleting machine, spray drying the suspension (O) onto the microcapsule 1 (P) to make the microcapsule 1 (P) Agglomerated into particles (300) having a diameter of 300 to 350 microns;

(6) A suspension (R) of a polydimethylsiloxane-treated toner 2 (a muscovite and a group of cyanine) is obtained in the same manner as in the steps (1), (2) and (3), A suspension (R) spray disk was applied to the granules (Q) to form a light purple outer shell, and a color-changing capsule (S) having a diameter of about 400 to 600 μm was obtained.

The color changing capsule shell prepared in this embodiment is light purple, and the pellet core is blue. When the color changing capsule of the embodiment is applied by external friction, the capsule structure is destroyed, the core material of the pellet core is leaked, and the pellet core and the pellet color material are The mixture is evenly mixed, the inner and outer colors are mixed, and the discoloration becomes a light blue-violet mixture to achieve a color changing effect. The color changing capsule of this embodiment can be added to the eye shadow for use.

Example 5 A color-changing capsule, the formulation of which is shown in Table 5.

The color-changing capsule of this embodiment has a diameter of 800 to 1000 μm.

Table 5 color capsule composition table

ingredient	Parts by weight
Carbon black	5
Iron oxide black	15
Titanium dioxide	35
Zinc oxide	20

Mannitol	6
Diethyl phthalate	4
Vitamin E	1
Carbomer	2
Gum arabic	3
Polydimethylsiloxane	2.5

All the toners and powders in this embodiment are treated by hydrophobic surface of polydimethylsiloxane. The color changing capsules of this embodiment are specifically prepared by the following preparation methods:

(1) mixing carbomer and gum arabic in an aqueous solution of 80% by mass in ethanol, and mixing well; (the amount of solvent used is soluble, mainly for the preparation of a uniform solution, so that subsequent operations can be carried out Spray drying)

(2) to the step (1) mixed homogeneous solution, adding diethyl phthalate and mannitol to make a capsule wall material solution (T);

(3) adding the active ingredient vitamin E to the capsule wall material solution (T), and then adding the mixed toner of the toner 1 (carbon black and iron oxide black) treated with the polydimethylsiloxane, and stirring uniformly. The components are homogeneously dispersed in the wall material solution to obtain a suspension (U) having a solids content of about 35%.

(4) The suspension (U) was spray-dried by a spray drying method to obtain a microcapsule 1 (V) having a diameter of about 45 to 60 μm.

(5) Using a suspension (U) as a binder, using a fluidized bed tangential spray pelleting machine, spray drying the suspension (U) onto the microcapsule 1 (V) to make the microcapsule 1 (V) Agglomerated into particles (W) having a diameter of 500 to 600 microns;

(6) A suspension (X) of a polydimethylsiloxane-treated toner 2 (titanium dioxide and zinc oxide) is obtained in the same manner as in the steps (1), (2) and (3), A suspension (X) spray disk was applied to the granules (W) to form a white outer shell, and a color-changing capsule (Y) having a diameter of about 800 to 1000 μm was obtained.

The color changing capsule shell prepared in this embodiment is white, and the pellet core is black. When the color changing capsule of the embodiment is applied by external friction, the capsule structure is destroyed, the core material of the pellet is leaked, and the pellet core and the pellet material are uniformly mixed. The color is mixed inside and outside, and the color changes to a light black mixture to achieve a color changing effect. The color changing capsule of this embodiment can be added to the eyebrow powder for use.

The other polymer film-forming materials which are easily soluble in water at normal temperature and the polymer film-forming materials which are insoluble or slightly soluble in water at normal temperature have a network cross-linked wrapping effect, and can be prepared into microcapsules. The wall of the capsule; the other plasticizers listed can swell and soften the different cosmetic matrix of the capsule, and thus have the swelling and softening effect; the other toners listed can exert their color effects; the other active ingredients listed can be realized. Its active function. That is, the color-changing capsule of the invention can be prepared by using any of the various substances listed in the present invention, and the object of the present invention can be achieved, and thus will not be further described.

The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to be limiting, although the applicant has explained the present invention in detail with reference to the preferred embodiments, those skilled in the art should understand the technical solutions of the present invention. Modifications or equivalents are intended to be included within the scope of the appended claims.

Claims (9)

1. A color changing capsule comprising a pellet core and a pellet shell; wherein the pellet core material comprises microcapsules containing the toner 1, the pellet shell material comprising microcapsules containing the toner 2; and the microcapsules containing the toner 1 The capsules were collected as a pellet core, and a microcapsule containing the toner 2 was spray-coated on the pellet core to obtain a color-changing capsule as a pellet.
2. The color-changing capsule according to claim 1, wherein the microcapsules containing the toner 1 and the microcapsules containing the toner 2 are microcapsules having a core-shell structure composed of a capsule wall and a capsule core; wherein the microcapsule The capsule wall of the capsule comprises one or more of a polymer film-forming material which is easily soluble in water at normal temperature and a polymer film-forming material which is insoluble or slightly soluble in water at a normal temperature, and the capsule core comprises a toner, an active ingredient and One or more of physical sunscreen agents; the polymer film forming materials which are easily soluble in water at normal temperature include methyl cellulose, ethyl cellulose, sodium carboxymethyl cellulose, povidone, hydroxyethyl Cellulose, hydroxyethyl methylcellulose, hydroxypropyl methylcellulose, carbomer, pullulan, dextran, gum arabic, pectin, carrageenan, sodium alginate or guar gum The polymer film-forming material which is insoluble or slightly soluble in water at normal temperature includes ethyl cellulose, methacrylic acid copolymer, shellac, cellulose acetate phthalate, corn mash, polyvinyl acetate, acetic acid. Cellulose, polyvinyl alcohol, agar, starch slurry or gelatin.
3. The color changing capsule according to claim 2, wherein said capsule wall further comprises one or more plasticizers; said plasticizer comprises glycerin, propylene glycol, polyethylene glycol, polypropylene glycol, 1,3- Butylene glycol, pentanediol, sorbitol, mannitol, xylitol, triethyl citrate, diethyl phthalate or castor oil.
4. The color changing capsule according to claim 2, wherein the toner comprises an inorganic toner or an organic lake; wherein the inorganic toner comprises iron oxide, titanium oxide, chromium oxide, chromium hydroxide, ultramarine blue, and a group Cyan, Prussian blue, manganese violet, mica or carbon black; the organic lake includes D&C series lakes or FD&C series lakes.
5. The color changing capsule according to claim 2, wherein the physical sunscreen agent comprises one or more of titanium dioxide and zinc oxide.
6. The color changing capsule according to claim 2, wherein one or more of the toner, active ingredient and physical sunscreen are further subjected to a hydrophobic surface treatment with a polydimethylsiloxane.
7. The color changing capsule according to claim 2, wherein one or more of the toner, the active ingredient and the physical sunscreen are further subjected to a hydrophilic surface treatment.
8. The color-changing capsule according to claim 2, wherein the microcapsules containing the toner 1 and the microcapsules containing the toner 2 have a diameter of 10 to 70 μm.
9. The color-changing capsule according to claim 2, wherein the color-changing capsule has a diameter of 50 to 1000 μm.