KR20130133330A - Complex particle having sunblock function - Google Patents

Abstract

The present invention relates to a complex particle having an ultraviolet blocking function by fixation exerted by physical pressure on a mixture acquired by mixing first coating particles, which are acquired by coating an organic ultraviolet blocking agent on base particles, with an insoluble metal salt again. The present invention comprises: first coating particles formed by being coated of an organic ultraviolet blocking agent on base particles; and an insoluble metal salt which is complexed with the first coating particles by fixation exerted by physical pressure.

Description

Complex particle having sunblock function {Complex particle having sunblock function}

The present invention relates to a composite powder having a UV protection function, and in particular, to the primary coating powder obtained by coating an organic sunscreen agent on the mother powder and the mixture obtained by mixing with a water-insoluble metal salt again by physical pressurization. The present invention relates to a composite powder having a UV blocking function, and optionally to a composite powder having an ultraviolet blocking function by further coating aluminum hydroxide on the surface of the composite powder so that a user can have an improved feeling of use.

Sunscreen is an ingredient used to protect the skin by blocking UV rays. Cosmetics containing sunscreen were first introduced in the United States in 1928. After that, in 1943, PABA (P-AminoBenzoic Acid) was patented as a sunscreen and became a catalyst for the development of sunscreen. As a result of the explosive demand, it has continued to develop. UV protective agents are also called "anti-nitrogen", which means that the skin burns in the sun. An ideal sunscreen should have a high effect on preventing skin burns and sunburn. Therefore, cosmetics containing sunscreen are mainly used in summer. The sunscreen contains an inorganic substance such as titanium dioxide, which prevents ultraviolet rays from penetrating into the skin by physical scattering, and an organic substance such as PABA. There is a "ultraviolet absorber" that extinguishes penetration into the interior. UV scattering agent is excellent in blocking action, there are no side effects such as contact dermatitis, but because of the opaque when formulated in a large amount of cream or lotion, there is a problem that is not good.

On the other hand, UV absorbers have good aesthetics because they are transparent after being applied to the skin, but when mixed in large amounts, there is a problem that can cause contact dermatitis.

Essential requirements for UV absorbers include the following:

-High chemical stability.

-It must be able to absorb a wide range of ultraviolet light.

-It should have high stability against heat and light.

-Do not react with other ingredients.

-It should not have a big influence on the feeling.

Due to the exposure of the skin to excessive ultraviolet rays due to the destruction of the ozone layer due to environmental pollution, various problems are occurring in the human body such as skin cancer, sunburn and skin troubles. In order to solve these problems, we are developing and using UV absorbers that absorb ultraviolet rays and UV scattering agents that protect the skin, and the development of cosmetics with high sun protection factor (SPF) as a measure of UV protection. It is a required situation. UV absorbers are products that use organic materials to extinguish the penetration of UV into the skin by chemical absorption. However, ultraviolet light scattering agents include titanium dioxide (hereinafter referred to as TiO ₂ ), zinc oxide (hereinafter referred to as ZnO), and the like that reflect or disperse ultraviolet rays and visible light. UV scattering agent made of general inorganic materials does not reduce UV protection effect over time after applying to skin, has less regulation on the mixing limit, safety is high as inorganic materials are used, and UV absorption wavelength band It has the advantage of being broad. However, after use, there may be a problem in that there is a whitening phenomenon that remains white on the skin, and a problem of heavy feeling occurs. On the other hand, when the inorganic material is ultra-fine, there is a disadvantage that the generation of free radicals due to the difficulty of dispersion and the catalytic properties of the material itself has toxic to the skin.

However, since most organic ultraviolet absorbers are mainly composed of aromatic compounds, skin irritation is accompanied by an increase in the amount of components, and thus the range of use and the amount of use thereof are strictly limited in each country. In addition, the organic ultraviolet absorber (1) has a poor solubility in oils, especially silicones, commonly used in cosmetics, (2) poor usability, (3) poor light stability, and (4) discoloration and discoloration over time. There is a problem such as generating. In addition, there is almost no UV protective agent that broadly covers the areas of UV-A and UV-B with a single UV protective agent.

In such a situation, excellent light stability, ultraviolet absorption and blocking effect of the whole area and harmless insoluble organic sunscreen, methylene-bisbenzotriazolyl tetramethylbutylphenol (MBBT), have been developed. Japanese Patent Application Laid-Open No. 04-2908775). This MBBT is insoluble in oils commonly used in water and cosmetics, and protects against ultraviolet rays by absorption, scattering, and reflection. The ultraviolet protection effect by absorption, scattering, and reflection is dependent on the particle size, and the average particle diameter is 150 to 200 nm. It is known that it will be an optimal condition. In addition, this MBBT is known to exhibit a synergistic effect together with other ultraviolet absorbers and to significantly increase the protective effect by being used in combination.

The chemical formula of the above methylenebis-benzotriazolyltetramethylbutylphenol is shown in FIG. 1. MBBT of FIG. 1 is known to those skilled in the art commercially available as an aqueous dispersion containing an average particle diameter of 200 nm in an amount of 50% by weight.

Japanese Patent Application Laid-Open No. 11-100317 discloses that the above-described MBBT improves signability by designing a prescription that refines it to an average particle diameter that exhibits optimal ultraviolet protection and disperses it in water. It is not possible to mix | blend in the non-aqueous formulation which does not mix | blend, and when adding a salt to the said aqueous dispersion, there exists a problem that the said MBBT aggregates and the ultraviolet-ray protective effect falls. In general, water-in-oil emulsion cosmetics are usually formulated with salts such as sodium sulfate and sodium chloride in order to improve the stability of the emulsion, it is difficult to apply the above-mentioned aqueous dispersion to the water-in-oil emulsion formulations, MBMB in a large amount There is a problem that the use and usability is degraded.

Japanese Laid-Open Patent Publication No. 2004-168913 discloses a means of embedding MBBT in a polymer soluble in an organic solvent. However, the MBBT itself is agglomerated at the time of inclusion, and it is difficult to maintain an optimum particle size. There is a problem that a sufficient ultraviolet ray protective effect is not obtained even by using.

Japanese Patent Application Laid-Open No. 2007-126419 has a composition in which the above-described MBBT is coated on the surface of a primary powder having an average particle diameter of 0.5 to 100 microns as a composite powder having excellent ultraviolet protective ability and excellent usability and transparency. A composite powder is disclosed, which is mixed with the primary powder and the MBBT in the presence of a water-soluble salt of a metal selected from the group consisting of Al, Mg, Ca, Zn, Zr and Ti in an aqueous medium, It is disclosed that it is produced by the method of orientation-adsorbing the MBBT on the surface of the primary powder. However, such a composite powder is also coated in a state in which the water-soluble salt of the metal and the MBBT are mixed on the surface of the primary powder because the composite powder is coated by mixing the primary powder and the MBBT in the presence of a water-soluble salt of the metal. There is no choice but to solve the problem that the application of the aqueous dispersion in water-in-oil emulsions is still difficult.

The present invention has been devised to solve the above problems of the prior art, and the primary coating powder obtained by coating an organic sunscreen on the mother powder is fixed by physical pressure to the mixture obtained by mixing with a water-insoluble metal salt. It is to provide a composite powder having a UV protection function.

It is also an object of the present invention to provide a composite powder having a sunscreen function, optionally by further coating aluminum hydroxide on the surface of the composite powder to give the user an improved feeling of use.

As described above, the composite powder having a sunscreen function for achieving the object of the present invention, the primary coating powder is formed by coating an organic sunscreen on the mother powder; It comprises a; water-insoluble metal salt complexed to the primary coating powder by fixing by physical pressure.

The matrix powder is coated with 20 to 60% by weight of titanium dioxide on the surface of the mica in amounts of 40 to 80% by weight of talc, mica, biotite, boron nitride, barium sulfate, plate alumina, and titanium dioxide / mica. Selected two-phase powders; also referred to as 'pearl'), polymethylmethacrylate, silica, nylon, titanium dioxide, silicon dioxide, polymethylsilsequioxene or mixtures of two or more thereof Can be.

The matrix powder may be preferably selected from the group consisting of talc, mica, mica, stratum alumina, silica, titanium dioxide or a mixture of two or more thereof.

The organic sunscreen agent is terephthalylidene dicamphor sulfonic acid, butylmethoxy dibenzoyl methane, triethanolamine salicylate, 2-hydroxy-4-methoxybenzophenone- 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, 2-ethylhexyl salicylate, 2-ethylhexyl paramethoxycinnamate, 2-cyano-3,3-diphenylacrylate, methyl anthranilate, benzophenone-3, benzophenone-9, phenyl Phenylbenzylimidazole sulfonic acid, para-aminobenzoic acid, 4-methylbenzylidene camphor, methylenebis-benzotriazoltetetramethylbutylphenol (Methylene-bisbenzotriazolyl tetramethylbutylphenol ), Bis-ethylhexyloxyphenol me Bis-ethylhexylphenol methoxyphenol triazine, disodiumphenyl dibenzimidazole tetrasulfonate, drometrizole trisiloxane, ethylhexyl triazone, diethylhydride Diethyl hydroxybenzoyl hexyl benzoate, diethylhexylbutamido triazone, dimethico-diethylbenzalmalonate, isoylpara-methoxycinnamate -methoxycinnamate) or a mixture of two or more thereof.

The organic sunscreen may preferably be methylenebis-benzotriazolyltetramethylbutylphenol.

The ratio of the matrix powder and the organic sunscreen in the primary coating powder may be a ratio of 60 to 99% by weight of the matrix powder and 1 to 40% by weight of the organic sunscreen.

The water-insoluble metal salt may be selected from the group consisting of aluminum sulfate, aluminum chloride, aluminum nitrate, calcium aluminum sulfate, calcium chloride, zinc nitrate, zinc chloride, zirconium sulfate, zirconium chloride or a mixture of two or more thereof.

The water-insoluble metal salt may be preferably selected from the group consisting of aluminum sulfate, aluminum nitrate, calcium chloride or a mixture of two or more thereof.

The composite powder may further include an aluminum hydroxide coating layer coated on the surface thereof.

The composite powder may further include a protective coating layer coated on the surface thereof.

The coating agent constituting the protective coating layer is methicone, dimethicone, hydrogendimethicone, triethoxycaprylylsilane, dimethylsilicone oil, acrylic silicone, cetyldimethicone copolymer, aminopropyldimethicone, magnesium myristate, Aluminum myristate, sodium myristate, calcium myristate, magnesium stearate, aluminum stearate, sodium stearate, calcium stearate, amino acid, ester oil, mineral oil, acrylate, triethoxyl ethyl polydimethylsiloxane, hexyl Dimethicone, dimethyltriethoxysilane, N-lauroyl-L-lysine, sodium laugliglutamate, ceramide or mixtures of two or more thereof.

The composite powder may further include an aluminum hydroxide coating layer coated on the surface thereof and a protective coating layer coated on the aluminum hydroxide coating layer surface.

In addition, the method for producing a composite powder having a sunscreen function of the present invention, (1) 60 to 99% by weight of the mother powder and 1 to 40% by weight of the organic sunscreen, 6 to 8 of the total weight of the parent powder and the organic sunscreen A primary coating step of pouring into a batch of water, stirring and then filtering, dehydrating and drying to obtain a primary coating powder; And (2) mixing the primary coating powder obtained in the primary coating step with a water insoluble metal salt and complexing the primary coating powder and the water insoluble metal salt by fixing by physical pressure to obtain a composite powder. It comprises a; a compounding step.

The manufacturing method of the composite powder having a UV blocking function may further include a secondary coating step of further forming an aluminum hydroxide coating layer on the surface of the composite powder.

The manufacturing method of the composite powder having the UV blocking function may further include a protective coating step of further forming a protective coating layer on the surface of the composite powder.

The manufacturing method of the composite powder having a UV protection function is a secondary coating step of further forming an aluminum hydroxide coating layer on the surface of the composite powder; And a protective coating step of further forming a protective coating layer on the surface of the aluminum hydroxide coating layer.

Therefore, according to the present invention, a composite powder having a UV blocking function by fixing by physical pressure to the mixture obtained by mixing the primary coating powder obtained by coating the organic sunscreen on the mother powder with a water-insoluble metal salt again. There is an effect to provide, and furthermore, there is an effect of providing a composite powder having a sunscreen function selectively by further coating aluminum hydroxide on the surface of the composite powder to give the user an improved feeling.

1 is a diagram showing the chemical formula of MBBT used in the present invention.
Figure 2 is a graph showing the results of measuring the ultraviolet absorption effect of the composite powder of the embodiments according to the present invention at a wavelength of 290 to 400nm using a spectrophotometer.
3 is a photograph taken with a scanning electron microscope (SEM) of the composite powder of Example 2 according to the present invention.

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

Composite powder having a sunscreen function according to the present invention, the primary coating powder is formed by coating an organic sunscreen on the mother powder; And a water-insoluble metal salt complexed to the primary coating powder by fixation by physical pressure.

The matrix powder provides the base on which the organic sunscreen is coated, and thus serves as the basis of the composite powder to be provided by the present invention. In addition, the matrix powder functions to scatter light such as ultraviolet rays. In particular, a plate-like inorganic powder having a non-smooth surface may be used for light scattering, and for this purpose, the matrix powder may be used as plate-shaped alumina. In addition, the matrix powder may itself function as an inorganic ultraviolet absorber, and for this purpose, the matrix powder may be titanium dioxide. In addition, the parent powder may function as a pigment as such, and titanium dioxide or zinc oxide may be used for this purpose. Accordingly, the matrix powder is 20 to 60% by weight titanium dioxide on the surface of the mica in the amount of 40 to 80% by weight of talc, mica, mica, boron nitride, barium sulfate, plate alumina, titanium dioxide / mica. This coated biphasic powder; also referred to as 'pearl'), polymethylmethacrylate, silica, nylon, titanium dioxide, silicon dioxide, polymethylsilsequioxene or mixtures of two or more thereof It is to be understood that the invention is not intended to be limited thereto. The matrix powder may be preferably selected from the group consisting of talc, mica, mica, stratum alumina, silica, titanium dioxide or a mixture of two or more thereof.

The organic sunscreen agent serves to block ultraviolet rays that are not scattered or blocked by the matrix powder, and is coated on the surface of the matrix powder to block ultraviolet rays from reaching the skin together with the matrix powder. These organic sunscreens are terephthalylidene dicamphor sulfonic acid, butylmethoxy dibenzoyl methane, triethanolamine salicylate, 2-hydroxy-4-methoxybenzophenone- 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, 2-ethylhexyl salicylate, 2-ethylhexyl paramethoxycinnamate, 2-cyano-3,3-diphenylacrylate, methyl anthranilate, benzophenone-3, benzophenone-9, phenyl Phenylbenzylimidazole sulfonic acid, para-aminobenzoic acid, 4-methylbenzylidene camphor, methylenebis-benzotriazoltetetramethylbutylphenol (Methylene-bisbenzotriazolyl tetramethylbutylphenol ), Bis-ethylhexyloxyphenol Methoxyphenoltriazine (bis-ethylhexylphenol methoxyphenol triazine), disodiumphenyl dibenzimidazole tetrasulfonate, drometrizole trisiloxane, ethylhexyl triazone, diethyl Diethyl hydroxybenzoyl hexyl benzoate, diethylhexylbutamido triazone, dimethico-diethylbenzalmalonate, isoylpara-methoxycinnamate p-methoxycinnamate) or a mixture of two or more thereof, but the present invention is not intended to be limited thereto. The organic sunscreen may preferably be methylenebis-benzotriazolyltetramethylbutylphenol.

The ratio of the matrix powder and the organic sunscreen in the primary coating powder may be a ratio of 60 to 99% by weight of the matrix powder and 1 to 40% by weight of the organic sunscreen. When the organic sunscreen is used in less than 1% by weight, there may be a problem that the UV protection index is too low, on the contrary, when the organic sunscreen exceeds 40% by weight, the UV protection index increases, but rather from the parent powder There may be a problem that the increase in the amount of falling off does not make the increase in the UV blocking index as expected.

It can be understood by those skilled in the art that the coating on the matrix of the organic sunscreen may be applied to any known coating method, and preferably the organic sunscreen and the matrix are water, preferably It can be achieved by adding into the water of 6 to 8 times, preferably about 7 times the total weight of the organic sunscreen and the parent powder, and after stirring, filtration, dehydration and drying, accordingly the primary coating Powder can be obtained. When the amount of the water used is less than 6 times, there may be a problem that the coating is not uniform because the mother powder and the organic sunscreen is not sufficiently dispersed in water, on the contrary, if the amount exceeds 8 times, waste of water and work time There may be a problem of unnecessary productivity degradation such as extension. Here, as the organic sunscreen, a 50% aqueous dispersion of methylenebis-benzotriazolyltetramethylbutylphenol may be preferably used, and such an aqueous solution is understood to be well known to those skilled in the art to purchase and use it commercially. As may be, for example, the product name TINOSORB M of CIBA Specialty Chemicals, France, can be used, but the present invention is not limited thereto.

The obtained primary coating powder is subsequently complexed with the water-insoluble metal salt by fixation by physical pressurization to obtain a composite powder according to the present invention.

The water-insoluble metal salt may be selected from the group consisting of aluminum sulfate, aluminum chloride, aluminum nitrate, calcium aluminum sulfate, calcium chloride, zinc nitrate, zinc chloride, zirconium sulfate, zirconium chloride, or a mixture of two or more thereof, preferably It may be selected from the group consisting of aluminum sulfate, aluminum nitrate, calcium chloride or a mixture of two or more of them having the best reaction bond of the metal.

The fixation by physical pressurization is called a 'mechano fusion method', and is a method of performing complexation between inorganic and inorganic materials, and physical force (pressure) is applied by a dry mechanical method. It means adding and complexing two or more kinds of fine particles. In this case, it is a coating method in which the shell particles (particles of the material constituting the optical layer or the color layer) are physically strongly bonded to the surface of the core particles (core particles, etc.) of the two particles, Afterwards, a surface treatment agent such as fatty acid, silicone, ester oil, fluorine compound, etc. may be coated on the surface to prevent the compounding from being dismantled by external chemical or physical impact. In the case of the present invention, the core particles may be the primary coating powder, and the shell particles may be the water-insoluble metal salt. The physical pressing means applying shear stress, where shear stress means applying force in the vertical direction of the disc record of the rotating body. Physical pressurization in the present invention may be within the range of 40 to 60 horsepower (HP). When the shear stress is less than 40 horsepower, there may be a problem that the shear stress is reduced and the coating efficiency is not good, on the contrary, if it exceeds 60 horsepower, there may be a problem that the powder is broken.

The ratio of the primary coating powder and the water-insoluble metal salt may be a ratio of 95 to 98.5% by weight of the primary coating powder and 1.5 to 5% by weight of the water-insoluble metal salt. When the water-insoluble metal salt is used in less than 1.5% by weight, the amount of the water-insoluble metal salt is too small, there is not enough effect to improve the bonding strength and adhesion, there may be a problem that the formation of the composite powder is poor, on the contrary 5% by weight If it exceeds, there may be a problem that the formation of the composite powder is poor.

According to the above it can be obtained a composite powder having a sunscreen function according to the present invention, the composite powder has a high UV protection effect, can be applied as cosmetics, in particular powdery cosmetics as well as mixing in the formulation of general cosmetics Has the advantage that can be used.

The composite powder may further include an aluminum hydroxide coating layer coated on the surface thereof. The aluminum hydroxide coating layer provides the user with the effect of improving the usability of the composite powder. Here, the feeling of use imparts a smooth feeling to the skin, low malleability, and means protecting the skin by minimizing the contact surface with the skin.

The composite powder may further include a protective coating layer coated on the surface thereof, and the coating agent constituting the protective coating layer may include methicone, dimethicone, hydrogendimethicone, triethoxycaprylylsilane, dimethylsilicone oil, Acrylic silicone, cetyl dimethicone copolymer, aminopropyl dimethicone, magnesium myristate, aluminum myristate, sodium myristate, calcium myristate, magnesium stearate, aluminum stearate, sodium stearate, calcium stearate, amino acid, ester oil Mineral oil, acrylate, triethoxylethylpolydimethylsiloxaneethylhexyldimethicone, dimethyltriethoxysilane, N-lauroyl-L-lysine, sodium lauriglutamate, ceramide or mixtures of two or more thereof It may be selected from the group consisting of, but the present invention is limited to these It is not intended to be. This protective coating layer is performed to hydrophobize the composite powder, and through such hydrophobicity, it is possible to reduce the lifting or peeling of the composite powder applied to the skin by sweat when using the composite powder.

The composite powder may further include an aluminum hydroxide coating layer coated on the surface thereof and a protective coating layer coated on the aluminum hydroxide coating layer surface.

In addition, the method for producing a composite powder having a sunscreen function of the present invention, (1) 60 to 99% by weight of the mother powder and 1 to 40% by weight of the organic sunscreen, 6 to 8 of the total weight of the parent powder and the organic sunscreen A primary coating step of pouring into a batch of water, stirring and then filtering, dehydrating and drying to obtain a primary coating powder; And (2) mixing the primary coating powder obtained in the primary coating step with a water insoluble metal salt and complexing the primary coating powder and the water insoluble metal salt by fixing by physical pressure to obtain a composite powder. Characterized in that it comprises a; compounding step.

In the first coating step of (1), 60 to 99% by weight of the parent powder and 1 to 40% by weight of the organic sunscreen are added to 6 to 8 times the amount of water of the total weight of the parent powder and the organic sunscreen, and after stirring, It consists of filtration, dehydration and drying.

Types of the parent powder and the organic sunscreen in the primary coating step, the ratio of the amount of use thereof, and the amount of water used are the same as the above description and will not be repeated.

In the compounding step of (2), the primary coating powder obtained in the primary coating step is mixed with a water insoluble metal salt, and the primary coating powder and the water insoluble metal salt are complexed by fixing by physical pressure. It consists of The physical pressurization here uses shear stresses within the range of 40 to 60 horsepower.

The kind of water-insoluble metal salt in the compounding step, the ratio of the primary coating powder and the amount of the water-insoluble metal salt used, and the physical pressure are the same as in the above description and will not be repeated.

The manufacturing method of the composite powder having a UV blocking function may further include a secondary coating step of further forming an aluminum hydroxide coating layer on the surface of the composite powder. The coating method in the secondary coating step may also be used without limitation, the coating method known to those skilled in the art can be easily carried out.

The manufacturing method of the composite powder having the UV blocking function may further include a protective coating step of further forming a protective coating layer on the surface of the composite powder. The coating method in the protective coating step may also be used without limitation the known coating method can be easily carried out by those skilled in the art. The coating agent in the protective coating step is also the same as or similar to the previous description will be repeated to avoid.

The manufacturing method of the composite powder having a UV protection function is a secondary coating step of further forming an aluminum hydroxide coating layer on the surface of the composite powder; And a protective coating step of further forming a protective coating layer on the surface of the aluminum hydroxide coating layer.

After performing the protective coating step, preferably a drying step of drying for about 12 to 14 hours in a temperature range of 100 to 120 ℃ can be further performed.

In addition, after the drying step, a grinding step may be further performed to have an appropriate particle size.

It is possible to obtain a composite powder having a sunscreen function according to the present invention by the method as described above.

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 to 4 and Comparative Example  1 to 3

MBBT was added to water as a mother powder and talc as an organic sunscreen at a ratio as shown in Table 1, followed by stirring, followed by filtration, dehydration and drying to obtain a primary coating powder, which was coated with aluminum sulfate as a water-insoluble metal salt. They were mixed and compounded by applying a shear stress of 50 horsepower.

division water
(g) Matrix powder
(g) MBBT 50% aqueous dispersion
(g) Water Insoluble Metal Salt
(g) Comparative Example 1 700 95.00 4.44 0.56 Example 1 700 90.00 8.44 1.56 Example 2 700 88.72 8.72 2.56 Example 3 700 81.00 15.44 3.56 Example 4 700 77.00 18.44 4.56 Comparative Example 2 700 73.00 21.44 5.56 Comparative Example 3 700 63.00 30.44 6.56

The ultraviolet absorption effect of the composite powders of the above examples obtained as described above was measured by using a spectrophotometer (UV / VIS Spectrophotometer; Jasco V-600; JASCO INTERNATIONAL CO., LTD. .) Product) was measured at a wavelength of 290 to 400nm, and the results are shown in Figure 2. In Figure 2, No. 1 is Comparative Example 1, No. 2 is Example 1, No. 3 is Example 2, 4 shows Example 3, 5 shows Example 4, 6 shows Comparative Example 2, and 7 shows Comparative Example 3.

As shown in FIG. 2, both the Comparative Examples and Examples were able to confirm that the ultraviolet absorbance increases as the coating amount of MBBT increases.

In addition, 50% by weight of each of the composite powders obtained in Comparative Examples 1 to 3 and Examples 1 to 4 and 50% by weight of petroleum jelly were weighed and uniformly mixed, and then uniformly coated on the transport tape by about 2 mg / cm 2. In vitro test was carried out in a UVF indicator (SPF Analyzer; product name SPF 290S, Optometrics LLC, United States of America), and the results are shown in Table 2 below.

division SPF Block Index Comparative Example 1 5.21 Example 1 13.63 Example 2 17.99 Example 3 21.02 Example 4 23.35 Comparative Example 2 25.62 Comparative Example 3 30.08

As shown in Table 2, Comparative Examples 2 and 3 were expected to have a high UV protection index according to the content of the MBBT component coated, even though the coating using 30% or more of the MBBT as an organic sunscreen, the amount of MBBT coated on the mother powder When it was increased to this limit, it was confirmed that the UV blocking index did not increase significantly, and from this, it was determined that it was detached without being adsorbed to the mother powder.

Also, the obtained composite powders were photographed with a scanning electron microscope (SEM), and the particle shape having excellent ultraviolet absorption effect was based on the size of 200 nm to 250 nm. It was judged by the criteria of the three-point standard method of defective, good and excellent, and the results are shown in Table 3 below.

division Judgment result Comparative Example 1 Bad Example 1 Good Example 2 Great Example 3 Good Example 4 Good Comparative Example 2 Bad Comparative Example 3 Bad

As shown in Table 3, the use ratio of the water-insoluble metal salt to the composite powder is good only when it falls within the range of 95 to 98.5% by weight of the primary coating powder and 1.5 to 5% by weight of the water-insoluble metal salt. Or it could be confirmed that excellent composite powder can be obtained. In particular, in the case of Example 2, as shown in Figure 3, the binding force and the adhesion was found to be excellent in the optimal state.

Example  5 to 11

The surface of the obtained composite powder was coated with aluminum hydroxide, and the composite powder obtained by coating with varying coating amounts was applied to the skin to find a change in feeling in 10 persons (2 women in 20s and 6 women in 30s). , 2 women in their 40's) was tested by the blind test to determine the spread of the coating powder, softness, fit, finish feel, the change in the usability, such as the five-point scale method to calculate the average point. The coating amount was coated in varying amounts of use in the range of 1 to 10% by weight based on the total weight of the composite powder obtained in Example 2 (Example 5 (1% by weight), Example 6 (2% by weight), Example 7 (3 weight%), Example 8 (5 weight%), Example 9 (7 weight%), Example 10 (9 weight%) and Example 11 (10 weight%)).

Criteria

1. Very bad feeling.

2. The feeling is slightly bad.

3. It is the same as the feeling of powder.

4. Slightly good feeling.

5. Very good feeling.

division Spreadability Softness A sense of closeness Finishing touch vitality Average Example 5 3.4 3.7 3.9 3.2 3.9 3.62 Example 6 4.4 3.6 3.8 4.3 3.8 3.98 Example 7 4.9 4.4 4.5 4.4 4.8 4.60 Example 8 4.0 4.2 4.1 4.0 4.0 4.06 Example 9 3.5 4.0 3.5 3.5 3.9 3.68 Example 10 3.5 3.9 3.5 3.0 3.9 3.56 Example 11 3.2 3.3 3.0 2.7 3.6 3.16

As shown in Table 4, as the coating amount of aluminum hydroxide increases based on the total weight of the composite powder (based on 100% by weight), the feeling of use was improved, and in Example 7 corresponding to 3% by weight of the It was found that the case was the best in all the evaluation items and the average, and after that, it was confirmed that the feeling of use gradually decreased as the coating amount was further increased. Therefore, it may not be desirable to use more than 10% by weight of the coating amount of aluminum hydroxide.

Therefore, the composite powder according to the present invention was confirmed that it can be applied to powder pact, sun cream, BB cream and the like.

Next, the composite powder (Comparative Example 4) and the composite powder (12) according to the present invention were combined with a plate-shaped alumina and the inorganic powder as a comparative example. It was prepared as.

Prize Ingredients Example 12 Comparative Example 4 A phase Methicone Talc 22.63 22.63 mica 15.00 Talc / Titanium Oxide - 14.00 Primary coating powder of Example 1 14.00 - Boron nitride 10.00 10.00 Serisite 10.00 10.00 nylon 5.00 5.00 Spherical powder 1.00 1.00 Silicone powder 1.00 1.00 B phase Silica 7.00 7.00 Urethane powder 1.00 1.00 C phase Titanium oxide 3.00 3.00 Zinc oxide 1.00 1.00 Ultramarine 0.06 0.06 Black iron oxide 0.04 0.04 Yellow iron oxide 1.11 1.11 Red iron oxide 0.40 0.40 D phase antiseptic
Silicone oil
Organic sunscreen 7.66 7.66 E phase incense 0.10 0.10

The manufacturing method of the above powder pact is as follows.

Step 1. The raw materials A and B phase were weighed.

Step 2. The raw materials C and D were weighed and heated to 75 ° C.

Step 3. In Step 1, the solution prepared in Step 2 was sprayed and mixed.

Step 4. The mixture obtained in Step 3 was ground and then molded (molding pressure 65 kg / cm 2, 5 seconds).

In order to find out whether the user can distinguish the product of the powder pact of the preparation example coated with MBBT active ingredient on the plate powder, the panel was selected and used for a certain period of time, and then the result was calculated as a score. This result was measured by the powder facts in Examples and Comparative Examples of Table 5 above. The MBBT active ingredient coated plate powder of the present invention was formulated with a color cosmetic (Example 12) to examine a total of six items, including spreadability, softness, fit, sustainability, finishing texture, and powdering according to each formulation.

The UV blocking index of the powder pacts prepared in Example 12 and Comparative Example 4 was measured. As a result, the UV blocking index of SP was 30.5 in the case of the comparative example, and the UV blocking index of 22.3 was shown in the comparative example. As a result, in the case of the powder pact according to the present invention, it was confirmed that the UV blocking index is excellent.

In addition, in order to compare the actual use effect, 10 women in their 20s to 30s ages were compared and reviewed for 2 weeks, and sensory evaluation was made with 5 out of 5 points for each item, and the results are shown in Table 6 below. .

division Spreadability Dusting Adhesion Finishing touch vitality Average Example 12 4.4 4.0 4.3 4.2 4.5 4.28 Comparative Example 4 3.4 3.6 3.8 4.3 3.8 3.78  Rate applied: 1-very bad, 2-bad, 3-medium, 4-good, 5-very good

As shown in the above results, the formulation of the Example using the primary coating powder according to the present invention was found to have a superior UV protection index than the formulation of the comparative example, and in terms of usability, considerably superior quality in the spread and finish texture, respectively. It was found to have.

The present invention can be used in the manufacturing industry of cosmetics and the industry using such cosmetics.

While the invention has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.

(Without reference numerals)

Claims (16)

Primary coating powder formed by coating the organic sunscreen on the mother powder; And a water-insoluble metal salt complexed to the primary coating powder by fixation by physical pressing. The method of claim 1,
The matrix powder is coated with 20 to 60% by weight of titanium dioxide on the surface of the mica in amounts of 40 to 80% by weight of talc, mica, mica, boron nitride, barium sulfate, plate-shaped alumina, and titanium dioxide / mica. Two-phase powders; also referred to as 'pearl'), polymethylmethacrylate, silica, nylon, titanium dioxide, silicon dioxide, polymethylsilsequioxene or mixtures of two or more thereof. A composite powder having a UV protection function. 3. The method of claim 2,
The matrix powder is a composite powder having a sunscreen function, characterized in that selected from the group consisting of talc, mica, mica, plate-shaped alumina, silica, titanium dioxide or a mixture of two or more thereof. The method of claim 1,
The organic sunscreen is terephthalylidene dicamphor sulfonic acid, butylmethoxy dibenzoyl methane, triethanolamine salicylate, 2-hydroxy-4-methoxybenzophenone- 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, 2-ethylhexyl salicylate, 2-ethylhexyl paramethoxycinnamate, 2-cyano-3,3-diphenylacrylate, methyl anthranilate, benzophenone-3, benzophenone-9, phenyl Phenylbenzylimidazole sulfonic acid, para-aminobenzoic acid, 4-methylbenzylidene camphor, methylenebis-benzotriazoltetetramethylbutylphenol (Methylene-bisbenzotriazolyl tetramethylbutylphenol ), Bis-ethylhexyloxyphenol me Bis-ethylhexylphenol methoxyphenol triazine, disodiumphenyl dibenzimidazole tetrasulfonate, drometrizole trisiloxane, ethylhexyl triazone, diethylhydride Diethyl hydroxybenzoyl hexyl benzoate, diethylhexylbutamido triazone, dimethico-diethylbenzalmalonate, isoylpara-methoxycinnamate -methoxycinnamate) or a composite powder having a sunscreen function, characterized in that selected from the group consisting of two or more thereof. 5. The method of claim 4,
Composite powder having a sunscreen function, characterized in that the organic sunscreen is methylenebis-benzotriazoltetramethylbutylphenol. The method of claim 1,
The composite powder having a sunscreen function, characterized in that the ratio of the parent powder and the organic sunscreen in the primary coating powder is a ratio of 60 to 99% by weight of the parent powder and 1 to 40% by weight of the organic sunscreen. The method of claim 1,
The water insoluble metal salt is selected from the group consisting of aluminum sulfate, aluminum chloride, aluminum nitrate, aluminum sulfate calcium calcium, calcium chloride, zinc nitrate, zinc chloride, zirconium sulfate, zirconium chloride or a mixture of two or more thereof. Having composite powder. The method of claim 7, wherein
The composite powder having a sunscreen function, characterized in that the water-insoluble metal salt is selected from the group consisting of aluminum sulfate, aluminum nitrate, calcium chloride or a mixture of two or more thereof. The method of claim 1,
Composite powder having a UV protection function, characterized in that the composite powder further comprises an aluminum hydroxide coating layer coated on the surface. The method of claim 1,
The composite powder having a UV protection function, characterized in that the composite powder further comprises a protective coating layer coated on its surface. 11. The method of claim 10,
The coating agent constituting the protective coating layer is methicone, dimethicone, hydrogendimethicone, triethoxycaprylylsilane, dimethylsilicone oil, acrylic silicone, cetyldimethicone copolymer, aminopropyldimethicone, magnesium myristate, Aluminum myristate, sodium myristate, calcium myristate, magnesium stearate, aluminum stearate, sodium stearate, calcium stearate, amino acid, ester oil, mineral oil, acrylate, triethoxyl ethyl polydimethylsiloxane, hexyl Dimethicone, dimethyltriethoxysilane, N-lauroyl-L-lysine, sodium laugliglutamate, ceramide or a composite powder having a sunscreen function, characterized in that selected from the group consisting of two or more thereof. The method of claim 1,
The composite powder having a UV protection function, characterized in that the composite powder further comprises an aluminum hydroxide coating layer coated on its surface and a protective coating layer coated on the aluminum hydroxide coating layer surface. (1) 60 to 99% by weight of the matrix powder and 1 to 40% by weight of the organic sunscreen are added to 6-8 times the amount of water of the total weight of the matrix and the organic sunscreen, and after stirring, filtration, dehydration and drying are performed. A primary coating step of obtaining a primary coating powder; And
(2) mixing the primary coating powder obtained in the primary coating step with a water-insoluble metal salt and complexing the primary coating powder and the water-insoluble metal salt by fixing by physical pressure to obtain a composite powder. Complexing step;
Method for producing a composite powder having a sunscreen function, characterized in that comprises a. The method of claim 13,
The manufacturing method of the composite powder having a UV protection function further comprises a secondary coating step of further forming an aluminum hydroxide coating layer on the surface of the composite powder. The method of claim 13,
The method of manufacturing a composite powder having a UV blocking function further comprises a protective coating step of further forming a protective coating layer on the surface of the composite powder. The method of claim 13,
The secondary coating step of the method for producing a composite powder having a UV protection function further forms an aluminum hydroxide coating layer on the surface of the composite powder; And a protective coating step of forming a protective coating layer on the surface of the aluminum hydroxide coating layer.
Method for producing a composite powder having a sunscreen function, characterized in that comprises a.

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