KR20110124436A - Composite pigment for cosmetic compositions and manufacturing method and manufacturing apparatus thereof - Google Patents

Abstract

PURPOSE: A method for manufacturing a composite pigment for a cosmetic product is provided to prevent absorption into human body. CONSTITUTION: A composite pigment for a cosmetic product is formed by coating shell particles on the surface of core particles by physical pressure. The shell particle is titanium dioxide or zinc oxide having 10-400nm of average particle diameter. The shell particle is coated with oil. A method for preparing the composite pigment comprises: a step of supplying the core particles into a rotary container; a step of rotating the rotary container at 4,000-8,000rpm; a step of supplying titanium dioxide or silicon power into the rotary container; and a step of mechanically coating the shell particles on the surface of the core particles.

Description

Composite pigment for cosmetic compositions and manufacturing method and manufacturing apparatus

The present invention relates to a composite pigment for cosmetics, a method for manufacturing the same, and a manufacturing apparatus thereof, and in particular, a nano-sized pigment particle as a shell particle by complexing a nano-sized pigment particle (shell particle) onto a surface of a sieving pigment (core particle). The present invention relates to a composite pigment for cosmetics and a method for producing the same, and a manufacturing apparatus thereof, which are capable of sufficiently exhibiting a function as a pigment while preventing reaggregation and absorption into a human body.

Most cosmetics, especially those used in color cosmetics, will inevitably contain pigments. Among the pigments, titanium dioxide (TiO ₂ ) and zinc oxide (ZnO), which are widely used as white pigments, are classified into pigments and fine particles according to particle size, and are used for different purposes.

Titanium dioxide and zinc oxide for pigments have an average particle size of 250 to 400 nm, and are mainly used for imparting hiding power and adjusting the concentration of color pigments. Titanium dioxide and zinc oxide for fine particles have an average particle size of 10 to 60 nm and are mainly used for UV protection.

However, these nano-sized pigment particles have a strong cohesive force, and are present in the form of agglomerated particles. The photographs taken under the scanning electron microscope are shown in FIG. 3 (FIG. 3a is titanium dioxide for pigment, and FIG. 3b is Titanium dioxide for particulates, FIG. 3C is zinc oxide for pigments, and FIG. 3D is zinc oxide for particulates. These mainly aggregated pigment particles are difficult to re-dispersed in the facilities for manufacturing cosmetics, and the aggregated pigment particles may cause a problem that does not exhibit sufficient function when used in cosmetics.

As one method for solving the conventional problems, the pigment particles may be used by surface treatment with silicon, fatty acids, amino acids, or the like, or may be mixed with a plate or spherical powder in advance, but the effect is not sufficient.

Recently, in the case of white pigments for particulates, controversy over human harmfulness has continued (for example, Health effects of inhaled engineered and incidental nanoparticles from Critical K. Madl and his colleagues, Critical Reviews in Toxicology, 2009; 39 (8): 629-658; Pulmonary toxicity induced by three forms of titanium dioxide nanoparticles via intra-tracheal instillation in rats, Nano-scaled particles of Onuma Kunishige and his colleagues of titanium dioxide convert benign mouse fibrosarcoma cells into aggressive tumor cells, The American journal of pathology, 2009; 175 (5): 2171-2183; Titanium dioxide nanoparticles induce DNA damage and genetic instability in vivo by Trune Benedicte and his colleagues in mice, Cancer research: the official organ of the American Association for Cancer Research, Inc, 2009; 69 (22); 8784-8789.

The fundamental solution to this problem is to disperse cohesive white pigments one by one and prevent reaggregation. However, it is very difficult to disperse the white pigment itself to prevent reagglomeration.

Therefore, there is a demand for the development of a composite pigment for cosmetics that can prevent the re-agglomeration of the white pigment and the cause of problems caused by absorption into the human body.

The present invention functions as a pigment while complexing nano-sized pigment particles (shell particles) to the surface of the extender pigment (core particles) to prevent reaggregation of nano-sized pigment particles as shell particles and absorption into the human body. It is an object of the present invention to provide a composite pigment for cosmetics and a method for manufacturing the same and a device for producing the same.

In the composite pigment for cosmetics according to the present invention, the shell particles are coated by physical pressure on the surface of the core particles, and the coating ratio of the shell particles is 5 to 50% based on the total surface area of the core particles. The coating is made to be within the range, characterized in that the shell particles are titanium dioxide or zinc oxide having an average particle diameter within the range of 10 to 400nm.

The shell particles are methicone, hydrogen dimethicone, triethoxycaprylylsilane, branched silicone, acrylic silicone, cetyl dimethicone copolymer, aminopropyl dimethicone and fatty acid prior to coating on the core particles. It may be further coated with a coating selected from the group consisting of magnesium misstate, aluminum myristate, sodium myristate, calcium myristate, magnesium stearate, aluminum stearate, sodium stearate, calcium stearate.

The shell particles may be coated to be in the range of 1 to 20% based on the total surface area of the shell particles.

The core particles are polymethyl methacrylate (PMMA), nylon resin, silica, urethane resin, styrene resin, talc, mica, mica, sericite, boron powder, alumina powder, Synthetic talc, synthetic mica, synthetic sericite or mixtures of two or more thereof.

The core particle may be one having an average particle diameter within a range of 8 to 12 times the average particle diameter of the shell particle.

In the method for producing a composite pigment for cosmetics according to the present invention, (1) preparing a rotating container having a fixed pressure unit therein, the shell particles coated the gap d1 between the fixed pressure unit and the inner wall of the rotary container. Adjusting smaller than the diameter of the core particles to be prepared, adjusting the interval (d1) to be within the range of 70 to 90% of the diameter of the core particles; (2) a core particle supply step of supplying core particles in the rotating container; (3) a rotating step of rotating the rotating container supplied with the core particles within a range of 4,000 RPM to 8,000 RPM; And (4) supplying titanium dioxide or zinc oxide having an average particle diameter within a range of 10 to 400 nm as shell particles into the rotating container, wherein the core particles and the shell particles are disposed between the fixed pressurizing unit and the rotating container. Pressurized at so that the shell particles are mechanically forcibly coated on the surface of the core particles, the shell particles are supplied in an amount ranging from 5 to 50% of the total surface area of the core particles in the rotating vessel Characterized in that it comprises a; shell particle supply step.

Prior to the shell particle supply step of (4), methicone, hydrogen dimethicone, triethoxycaprylylsilane, branched silicone, acrylic silicone, cetyl dimethicone copolymer, aminopropyl as oil on the surface of the shell particle A coating agent selected from the group consisting of magnesium misstate, aluminum myristate, sodium myristate, calcium myristate, magnesium stearate, aluminum stearate, sodium stearate and calcium stearate as dimethicone and fatty acid may be used for the preparation of the shell particles. It may further include a coating step of coating to be within the range of 1 to 20% based on the surface area.

In addition, the apparatus for producing a composite pigment for cosmetics according to the present invention, comprising a fixed pressing portion and a rotating container, the interval (d1) between the fixed pressing portion and the inner wall of the rotating container is coated with shell particles. It is made to be adjusted so as to be within the range of 70 to 90% of the diameter of the core particles, characterized in that made in contact with the inner wall of the rotating container scraping for scraping off the particles sticking to the inner wall of the rotating container. do.

The interval d1 between the fixed pressurizing unit and the rotating container may be adjusted by adjusting the length of the connecting rod connecting the fixed pressurizing unit and the fixed center portion to which the fixed pressurizing unit is fixed.

The rotating container may be made of a long oval and a short oval different from each other.

The ratio between the long diameter and the short diameter of the rotating container may be a ratio of 0.9 to 1.1.

Therefore, according to the present invention, the nano-sized pigment particles (shell particles) are compounded on the surface of the extender pigment (core particles) to prevent reaggregation of nano-sized pigment particles as shell particles and to prevent absorption into the human body. There is an effect of providing a composite pigment for cosmetics, a method for producing the same, and a manufacturing apparatus for fully exhibiting its function as a.

1 is a horizontal cross-sectional view schematically showing the configuration of a manufacturing apparatus for manufacturing a composite pigment for cosmetics according to the present invention.
2 is a vertical cross-sectional view schematically showing the configuration of the manufacturing apparatus of FIG.
Figure 3 is a photograph taken of the nano-sized white pigment under a scanning electron microscope, showing that the titanium dioxide and zinc oxide pigment particles are present in the form of agglomeration (Fig. 3a is a titanium dioxide for pigment, Figure 3b is Titanium dioxide for particulates, FIG. 3C is zinc oxide for pigments, and FIG. 3D is zinc oxide for particulates.
4 is a scanning electron micrograph of a composite pigment (PMST Q73) for cosmetics prepared according to Example 1 of the present invention.
5 is a scanning electron micrograph of a composite pigment (NYST Q73) for cosmetics prepared according to Example 2 of the present invention.
6 is a scanning electron micrograph of a composite pigment (SIST Q73) for cosmetics prepared according to Example 3 of the present invention.
7 is a scanning electron micrograph of a composite pigment (PMZN Q73) for cosmetics prepared according to Example 4 of the present invention.
8 is a scanning electron micrograph of a composite pigment (SEST Q73) for cosmetics prepared according to Example 5 of the present invention.
9 is a scanning electron micrograph of a composite pigment (MKST Q73) for cosmetics prepared according to Example 6 of the present invention.
10 is a scanning electron micrograph of a composite pigment (BNST Q73) for cosmetics prepared according to Example 7 of the present invention.
11 is a scanning electron micrograph of a composite pigment (MKZN Q73) for cosmetics prepared according to Example 8 of the present invention.
12 is a scanning electron micrograph of a composite pigment (MKCR Q55) for cosmetics prepared according to Example 9 of the present invention.
13 is a scanning electron micrograph of a composite pigment (MICR Q55) for cosmetics prepared according to Example 10 of the present invention.
14 is a scanning electron micrograph of a composite pigment (SECR Q73) for cosmetics prepared according to Example 11 of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the composite pigment for cosmetics according to the present invention, the shell particles are coated by physical pressure on the surface of the core particles, and the coating ratio of the shell particles is 5 to 50% based on the total surface area of the core particles. The coating is made to be within the range, characterized in that the shell particles are titanium dioxide or zinc oxide having an average particle diameter within the range of 10 to 400nm. The composite pigment according to the present invention is particularly optimized for cosmetics, wherein the shell particles are coated by physical pressure on the surface of the core particles. The physical coating of the shell particles onto the core particles is mainly carried out by mechanical pressurization, which is commonly referred to as an ordered mixture. In particular, the composite pigment of the present invention is coated so that the coating ratio of the shell particles are within the range of 5 to 50% based on the total surface area of the core particles. When the coating ratio of the shell particles is less than 5%, there may be a problem that the effect of the physical coating, that is, the effect of inhibiting aggregation or blocking the absorption of the nano-sized shell particles to the human body may be insufficient, on the contrary If it exceeds 50%, there may be a problem that the coating amount is too large relative to the coating area so that it is not properly coated.

As the shell particles, titanium dioxide or zinc oxide having an average particle diameter within a range of 10 to 400 nm may be used.

The shell particles are methicone, hydrogen dimethicone, triethoxycaprylylsilane, branched silicone, acrylic silicone, cetyl dimethicone copolymer, aminopropyl dimethicone and fatty acid prior to coating on the core particles. It may be further coated with a coating selected from the group consisting of magnesium misstate, aluminum myristate, sodium myristate, calcium myristate, magnesium stearate, aluminum stearate, sodium stearate, calcium stearate. The coating of the shell particles with a coating agent such as oil or fatty acid functions to prevent the shell particles mechanically coated on the surface of the core particles from being separated by impact or wheat applied during cosmetic production. In particular, preferably the oil or fatty acid as the coating agent may be an oil or fatty acid used as a cosmetic raw material in the manufacture of a conventional cosmetic.

The shell particles may be coated to be in the range of 1 to 20% based on the total surface area of the shell particles.

The core particles are polymethyl methacrylate (PMMA), nylon resin, silica, urethane resin, styrene resin, talc, mica, mica, sericite, boron powder, alumina powder, It may be selected from the group consisting of synthetic talcum, synthetic mica, synthetic sericite or a mixture of two or more thereof. The core particles are those commonly used as extender pigments in the manufacture of cosmetics, and extender pigments refer to achromatic pigments blended with other pigments in order to increase the amount (increase amount) or dilute the concentration. Inorganic materials such as calcium carbonate and barium sulfate are often used. Particularly, in the present invention, the shell particles are used as a coating substrate to prevent shell particles from reaggregating, and as a result, the fine white pigment powder as shell particles is coated and fixed on the surface of the extender pigment as the core particles.

The core particle may be one having an average particle diameter within a range of 8 to 12 times the average particle diameter of the shell particle. When the average particle diameter of the core particles is less than 8 times the average particle diameter of the shell particles, the particle size of the shell particles is relatively large so as to prevent reagglomeration and absorption into the human body to implement in the present invention. There may be a problem that it is difficult to perform a mechanical coating according to the purpose, on the contrary, if it exceeds 12 times, the amount of the shell particles to be coated is so excessive that the cosmetics to sufficiently exhibit the function as a pigment to achieve in the present invention There may be a problem in implementing a complex pigment.

Mechanical coating of the shell particles on the surface of the core particles is made according to the compounding principle.

Complexation can be divided into preparation of an ordered mixture by powder / powder mixing and particle complexation by high-speed impact.

The manufacture of ordered mixtures by powder / powder mixtures utilizes contact and friction between the particles or between the particles and the mixing device, and the ordered mixture is attached by interaction between two or more types of particles. It means the mixing state that takes place. In contrast, there is a random mixture, which means a mixed state without adhesion between heterogeneous particles. This is possible when the chargeability is large (organic / inorganic) and the particle size ratio of the core particles / shell particles is 10 or more.

In addition, the compounding of particles by high-speed impact is a method of transforming the core particles into core / shell form by supplying mechanical energy to the target material (core particle) and the control material (shell particle). Mechanical force is applied to the core particles in all directions, and the shell particles can be compounded under the condition that force is applied in only one direction. The direction of action of the mechanical energy is dependent on the size of the particles, and the size of the particles to which the force is applied evenly in all directions is 3 µm or more, and when the core particles are smaller than this, it is difficult to complex. In addition, in the case of using a highly homogeneous ordered mix, mechanical complexation is possible, and a silicon elastic powder may be used as a target material, and inorganic powder may be used as a control material.

In addition, the method of manufacturing a composite pigment for cosmetics according to the present invention, (1) preparing a rotating container installed inside the fixed pressure unit, shell spacing (d1) between the fixed pressure unit and the inner wall of the rotating container. Adjusting is smaller than the diameter of the core particles to be coated, the preparation step of adjusting the interval (d1) to be within the range of 70 to 90% of the diameter of the core particles; (2) a core particle supply step of supplying core particles in the rotating container; (3) a rotating step of rotating the rotating container supplied with the core particles within a range of 4,000 RPM to 8,000 RPM; And (4) supplying titanium dioxide or zinc oxide having an average particle diameter within a range of 10 to 400 nm as shell particles into the rotating container, wherein the core particles and the shell particles are disposed between the fixed pressurizing unit and the rotating container. Pressurized at so that the shell particles are mechanically forcibly coated on the surface of the core particles, the shell particles are supplied in an amount ranging from 5 to 50% of the total surface area of the core particles in the rotating vessel Characterized in that it comprises a; shell particle supply step.

In the preparing step of (1), the fixed pressurizing unit prepares a rotating container installed therein, and adjusts the distance d1 between the fixed pressurizing unit and the inner wall of the rotating container to be smaller than the diameter of the core particle coated with the shell particles. , The interval d1 is adjusted to be within a range of 70 to 90% of the diameter of the core particles. When the gap d1 is less than 70% of the diameter of the core particle, the gap d1 is too narrow for the diameter of the core particle to be coated so that the core particle enters between the fixed pressurizing portion and the inner wall of the rotating container. The core particles may not be sufficiently coated with the shell particles, and on the contrary, when the gap d1 exceeds 90% of the diameter of the core particles, the core particles may be coated with the diameter of the core particles to be coated. Since the gap d1 is too wide, sufficient mechanical pressure is not applied to the core particles, and thus the core particles may not be sufficiently coated with the shell particles.

The core particle supply step of (2) consists of supplying the core particles in the rotary container.

The rotating step of (3) consists of rotating the rotating container supplied with the core particles within the range of 4,000 to 8,000 rpm. At this time, when the rotational speed of the rotating container is rotated less than 4,000rpm, the rotational speed is too slow, there may be a problem that the shell particles are not uniformly coated on the core particles, on the contrary, if the rotational speed exceeds 8,000rpm, rotation There is a problem that the shape of the core particles and the shell particles is deformed because the speed is too fast and the pressure applied to the core particles and the shell particles is excessive.

In the shell particle supply step (4), the core particle and the shell particle are fixed pressure by supplying titanium dioxide or zinc oxide having an average particle diameter within the range of 10 to 400 nm as shell particles into the rotating container. Pressed between the portion and the rotating vessel to force the shell particles mechanically coated on the surface of the core particles, so that the supply amount of the shell particles is 5 to 50% of the total surface area of the core particles in the rotating vessel It consists of supplying in the quantity of the range. When the coating ratio of the shell particles is less than 5%, there may be a problem that the effect of the physical coating, that is, the effect of inhibiting aggregation or blocking the absorption of the nano-sized shell particles to the human body may be insufficient, on the contrary If it exceeds 50%, there may be a problem that the coating amount is too large relative to the coating area so that it is not properly coated.

Prior to the shell particle supply step of (4), methicone, hydrogen dimethicone, triethoxycaprylylsilane, branched silicone, acrylic silicone, cetyl dimethicone copolymer, aminopropyl as oil on the surface of the shell particle A coating agent selected from the group consisting of magnesium misstate, aluminum myristate, sodium myristate, calcium myristate, magnesium stearate, aluminum stearate, sodium stearate and calcium stearate as dimethicone and fatty acid may be used for the preparation of the shell particles. It may further include a coating step of coating to be within the range of 1 to 20% based on the surface area. When coating the shell particles with the oil or fatty acid, when the coating ratio is less than 1%, there may be a problem that the amount of the coating agent is too small to expect the adhesion ability of the shell particles, on the contrary exceeds 20% However, there may be a problem in that the amount is too excessive to cause aggregation between the shell particles.

In addition, the apparatus for producing a composite pigment for cosmetics according to the present invention, as shown in Figure 1 and 2, comprising a fixed pressing unit 21 and the rotating container 11, the fixed pressing unit 21 ) And the interval d1 between the inner wall of the rotating container 11 is adjusted to be within a range of 70 to 90% of the diameter of the core particles to be coated with the shell particles, the of the rotating container 11 It characterized in that it comprises a scraper (31) for scraping the particles in contact with the inner wall to stick to the inner wall of the rotary container (11).

The fixed pressing part 21 is fixed to the inside of the rotating container 11, so that even when the rotating container 11 is rotated to maintain a relatively fixed position, as a result the rotating container 11 is rotated As a result, the relative motion is naturally made with respect to the rotating container 11, whereby the core particles and the shell particles introduced into the rotating container 11 are mechanically (or physically) pressed to press the core particles and the shell particles. They function naturally in mechanical coatings. The fixed pressing part 21 is located at the center of the rotary container 11, is connected to the fixed center portion 22 which is not driven according to the rotary container 11 is fixed, in particular with the fixed center portion 22 The fixed pressurizing unit 21 may be connected to each other by a connecting rod 23 so that the fixed pressurizing unit 21 is fixed. In particular, the connecting rod 23 is preferably configured to be used to adjust the interval (d1) between the fixed pressing portion 21 and the rotary container (11). Thus, it is possible to allow mechanical pressing for optimum mechanical coating to be carried out depending on the type and size of the core particles.

As shown in FIG. 2, the rotary container 11 is driven and rotated by the container driving shaft 12, and the container driving shaft 12 is separate from an electric motor (not shown for simplicity of the drawing). It can be driven by the driving means of.

A gap d1 is formed between the fixed pressing part 21 and the inner wall of the rotating container 11. Therefore, as the rotary container 11 is rotated, the core particles and the shell particles are introduced into the gap d1 and pressurized, and as a result, the shell particles are coated on the surface of the core particles. The gap d1 is made to be adjusted to be within the range of 70 to 90% of the diameter of the core particles to be coated with the shell particles. The reason why the distance d1 is to be adjusted to be within the range of 70 to 90% of the diameter of the core particles to be coated with the shell particles is as described above, and thus will be omitted to avoid repeated description.

The scraper 31 is in contact with the inner wall of the rotating container 11 and functions to scrape off the particles adhering to the inner wall of the rotating container (11). Therefore, among the core particles coated with the shell particles or the core particles not coated with the shell particles by mechanical pressure for coating, the particles stuck to the inner wall of the rotating container 11 are removed by the scraper 31. It is separated from the inner wall of the rotating container 11, so that a continuous mechanical coating can be performed.

Hereinafter, preferred embodiments and comparative examples of the present invention will be described.

The following examples are intended to illustrate the invention and should not be understood as limiting the scope of the invention.

Example 1

After preparing the rotating container with the fixed pressure unit installed therein, adjusting the distance between the fixed pressure unit and the inner wall of the rotating container to be 90% of the particle diameter of the core particles to be injected, and having an average particle diameter of 10 μm as core particles. After the polymethyl methacrylate resin (PMMA) was introduced into the rotating container, the rotating container was rotated at a speed of 6,000 rpm and the average particle diameter of 120 nm long axis and 20 nm short axis was used as shell particles into the rotating container. To supply a titanium dioxide coated with stearic acid at a coating ratio of 9%, the supply of the shell particles in an amount such that the supply amount is 30% of the total surface area of the core particles in the rotary container (PMST) Q73) was obtained. The obtained composite pigment was photographed with a scanning electron microscope, which is shown in FIG.

As shown in Figure 4, the obtained composite pigment was confirmed that the shell particles are uniformly coated on the surface of the core particles.

Example 2

Using a nylon resin having an average particle diameter of 7 μm as the core particle, and supplying titanium dioxide coated with stearic acid at a coating ratio of 9% having a major axis of 120 nm, a minor axis of 20 nm, and an average particle diameter of 20 nm as shell particles. Except that was carried out in the same manner as in Example 1 to obtain a composite pigment (NYST Q73) according to the present invention. The obtained composite pigment was photographed with a scanning electron microscope, which is shown in FIG.

As shown in Figure 5, the obtained composite pigment was confirmed that the shell particles are uniformly coated on the surface of the core particles.

Example 3

Silica having an average particle diameter of 8 μm is used as the core particle, and shell particles have an average particle diameter of 120 nm, a minor axis 20 nm and 20 nm, and are supplied with titanium dioxide coated with stearic acid at a coating ratio of 9%. Then it was carried out in the same manner as in Example 1 to obtain a composite pigment (SIST Q73) according to the present invention. The obtained composite pigment was photographed with a scanning electron microscope, which is shown in FIG.

As shown in Figure 6, the obtained composite pigment was confirmed that the shell particles are uniformly coated on the surface of the core particles.

Example 4

Except for using polymethyl methacrylate resin having an average particle diameter of 10㎛ as core particles, and supplying zinc oxide having a particle diameter of 30nm as shell particles in the same manner as in Example 1 A composite pigment (PMZN Q73) was obtained. The obtained composite pigment was photographed with a scanning electron microscope, which is shown in FIG.

As shown in Figure 7, the obtained composite pigment was confirmed that the shell particles are uniformly coated on the surface of the core particles.

Example 5

Using sericite having an average particle diameter of 10 μm as the core particle, and supplying titanium dioxide coated with stearic acid with a coating ratio of 9% having a long axis of 120 nm, a short axis of 20 nm and 20 nm as a shell particle. Except that was carried out in the same manner as in Example 1 to obtain a composite pigment (SEST Q73) according to the present invention. The obtained composite pigment was photographed with a scanning electron microscope, which is shown in FIG.

As shown in Figure 8, the obtained composite pigment was confirmed that the shell particles are uniformly coated on the surface of the core particles.

Example 6

Synthetic mica having an average particle diameter of 8 μm was used as core particles, and titanium dioxide coated with stearic acid having a major particle diameter of 120 nm, a minor axis 20 nm, and 20 nm as a shell particle and a 9% coating ratio was supplied. Except that was carried out in the same manner as in Example 1 to obtain a composite pigment (MKST Q73) according to the present invention. The obtained composite pigment was photographed with a scanning electron microscope, which is shown in FIG.

As shown in Figure 9, the obtained composite pigment was confirmed that the shell particles are uniformly coated on the surface of the core particles.

Example 7

Boron powder having an average particle diameter of 8 μm is used as the core particle, and shell particles have an average particle diameter of 120 nm, a minor axis 20 nm, and 20 nm, and are supplied with titanium dioxide coated with stearic acid at a coating ratio of 9%. Then it was carried out in the same manner as in Example 1 to obtain a composite pigment (BNST Q73) according to the present invention. The obtained composite pigment was photographed with a scanning electron microscope, which is shown in FIG.

As shown in Figure 10, the obtained composite pigment was confirmed that the shell particles are uniformly coated on the surface of the core particles.

Example 8

According to the present invention was carried out in the same manner as in Example 1 except that synthetic mica having a particle diameter of 8 μm was used as the core particle, and zinc oxide having an average particle diameter of 30 nm was supplied as the shell particle. Compound pigment (MKZN Q73) was obtained. The obtained composite pigment was photographed with a scanning electron microscope, which is shown in FIG.

As shown in Figure 11, the obtained composite pigment was confirmed that the shell particles are uniformly coated on the surface of the core particles.

Example 9

According to the present invention was carried out in the same manner as in Example 1, except that synthetic mica having an average particle diameter of 8 μm was used as the core particle, and titanium dioxide for pigments having an average particle diameter of 250 nm was supplied as shell particles. Compound pigment (MKCR Q55) was obtained. The obtained composite pigment was photographed with a scanning electron microscope, which is shown in FIG.

As shown in Figure 12, the obtained composite pigment was confirmed that the shell particles are uniformly coated on the surface of the core particles.

Example 10

According to the present invention was carried out in the same manner as in Example 1, except that natural mica having an average particle diameter of 10 μm was used as the core particle, and titanium dioxide for pigments having an average particle diameter of 250 nm was supplied as shell particles. Compound pigment (MICR Q55) was obtained. The obtained composite pigment was photographed with a scanning electron microscope, which is shown in FIG.

As shown in Figure 13, the obtained composite pigment was confirmed that the shell particles are uniformly coated on the surface of the core particles.

Example 11

According to the present invention was carried out in the same manner as in Example 1, except that sericite having an average particle diameter of 10 μm was used as the core particle, and titanium dioxide for pigments having an average particle diameter of 250 nm was supplied as shell particles. Compound pigment (SECR Q55) was obtained. The obtained composite pigment was photographed with a scanning electron microscope, which is shown in FIG.

As shown in Figure 14, the obtained composite pigment was confirmed that the shell particles are uniformly coated on the surface of the core particles.

The present invention functions as a pigment while complexing nano-sized pigment particles (shell particles) to the surface of the extender pigment (core particles) to prevent reaggregation of nano-sized pigment particles as shell particles and absorption into the human body. The present invention provides a composite pigment for cosmetics and a method for producing the same, and a manufacturing apparatus thereof, which can be sufficiently exhibited, and thus can be used in industries such as manufacturing cosmetics.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and modifications are within the scope of the appended claims.

11: rotating container 12: container drive shaft
21: fixed pressure part 22: fixed center part
23: connecting rod 31: scratch

Claims (11)

The shell particles are coated on the surface of the core particles by physical pressurization, and the coating ratio of the shell particles is made to be coated in a range of 5 to 50% based on the total surface area of the core particles, and the shell A composite pigment for cosmetics, characterized in that the particles are titanium dioxide or zinc oxide having an average particle diameter within the range of 10 to 400 nm. The method of claim 1,
Before the shell particles are coated on the core particles as methicone, hydrogen dimethicone, triethoxycaprylylsilane, branched silicone, acrylic silicone, cetyl dimethicone copolymer, aminopropyl dimethicone and fatty acid as oil Cosmetics, characterized in that further coated with a coating selected from the group consisting of magnesium misstate, aluminum myristate, sodium myristate, calcium myristate, magnesium stearate, aluminum stearate, sodium stearate, calcium stearate Complex pigments. The method of claim 1,
The composite pigment for cosmetics, characterized in that the shell particles are coated to be within the range of 1 to 20% based on the total surface area of the shell particles. The method of claim 1,
The core particles are polymethyl methacrylate (PMMA), nylon resin, silica, urethane resin, styrene resin, talc, mica, mica, sericite, boron powder, alumina powder, A composite pigment for cosmetics, characterized in that it is selected from the group consisting of synthetic talc, synthetic mica, synthetic sericite or a mixture of two or more thereof. The method of claim 1,
The composite pigment for cosmetics, characterized in that the core particles have an average particle diameter within the range of 8 to 12 times the average particle diameter of the shell particles. (1) preparing a rotating container having a fixed pressure unit installed therein, and adjusting the distance d1 between the fixed pressure unit and the inner wall of the rotary container to be smaller than the diameter of the core particles coated with shell particles, ) Is adjusted to be within the range of 70 to 90% of the diameter of the core particle;
(2) a core particle supply step of supplying core particles in the rotating container;
(3) a rotating step of rotating the rotating container supplied with the core particles within a range of 4,000 to 8,000 rpm; And
(4) supplying titanium dioxide or silicon powder having an average particle diameter within a range of 10 to 400 nm as shell particles into the rotating rotating container so that the core particles and the shell particles are formed between the fixed pressurizing portion and the rotating container. Pressurized to mechanically forcibly coat the shell particles on the surface of the core particles, the shell particles being supplied in an amount ranging from 5 to 50% of the total surface area of the core particles in the rotating container. Shell particle supply step;
Method for producing a composite pigment for cosmetics, characterized in that comprises a. The method according to claim 6,
Prior to the shell particle supply step of (4), methicone, hydrogen dimethicone, triethoxycaprylylsilane, branched silicone, acrylic silicone, cetyl dimethicone copolymer, aminopropyl as oil on the surface of the shell particle A coating agent selected from the group consisting of magnesium misstate, aluminum myristate, sodium myristate, calcium myristate, magnesium stearate, aluminum stearate, sodium stearate and calcium stearate as dimethicone and fatty acid may be used for the preparation of the shell particles. Method for producing a composite pigment for cosmetics, characterized in that further comprises a coating step of coating to be within the range of 2 to 10% based on the surface area. It consists of a fixed pressing unit and a rotating container, the distance between the fixed pressing unit and the inner wall of the rotating container (d1) is to be adjusted to be within the range of 70 to 90% of the diameter of the core particles to be coated with shell particles Is made so that, in contact with the inner wall of the rotating container manufacturing apparatus of a composite pigment for cosmetics, characterized in that it comprises a scratcher for scraping off the particles sticking to the inner wall of the rotating container. The method of claim 8,
The interval between the fixed pressing unit and the rotating container (d1) is made to be adjusted by the adjustment of the length of the connecting rod connecting between the fixed pressing portion and the fixed center portion to which the fixed pressing unit is fixed Manufacturing apparatus of pigment. The method of claim 8,
Apparatus for producing a composite pigment for cosmetics, characterized in that the rotating container is made of an oval different in long diameter and short diameter. The method of claim 10,
The ratio of the long diameter and short diameter of the rotating container is a manufacturing apparatus of a composite pigment for cosmetics, characterized in that the ratio of 0.9 to 1.1.

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