KR20140046507A - A cosmetic composition for uv-cut containing complex powder as effective ingredient coated with butyl methoxydibenzoylmethane and method for production of the same - Google Patents

Abstract

The present invention relates to a method for manufacturing a UV-block complex power coated with butyl methoxydibenzoylmethane and a cosmetic composition comprising the same as an active ingredient for blocking ultraviolet rays. The most preferable concentration of an organic UV-absorber BMDBM, which has UV-A and UV-B blocking ability, is determined when BMDBM is coated on an inorganic powder. The UV-block cosmetic composition comprises the complex power coated with BMDBM with the determined concentration as an active ingredient. [Reference numerals] (1) Dissolving BMDBM in 1; (2) Heating purified water(70-80°C); (3) Adding lecithin; (4) Heating the purified water; (5) Adding inorganic powders; (6) Adding the BMDBM emulsion; (AA) Process for manufacturing composite powders containing BMDBM; (BB) Process for manufacturing the emulation containing BMDBM; (CC) Cooling to room temperature(20-25°C); (DD) 80-85°C heating; (EE,FF) Stir at 1,500-2,000 rpm for 30 min; (GG) Fixing and aging; (HH) Room temperature, 24 hr; (II) Filtrating and drying; (JJ) Less than 1% of water content; (KK) Grinding, packaging

Description

TECHNICAL FIELD [0001] The present invention relates to a process for producing ultraviolet-shielding composite powder coated with butylmethoxydibenzoylmethane and an ultraviolet screening cosmetic composition containing the same as an active ingredient. same}

Butylmethoxydibenzoylmethane-coated ultraviolet-shielding composite powder, and a cosmetic composition for protecting ultraviolet rays containing the same as an active ingredient.

Recently, ozone depletion has intensified and the amount of ultraviolet radiation reaching the surface has gradually increased, and consumers have become interested in ultraviolet screening functional products. The ultraviolet ray has a wavelength range of 200 to 400 nm in the spectrum region of sunlight and is known to cause skin photoaging, cell damage, and DNA damage (Inorg. Chim. Acta, 360 (3), 794, 2007). UV protection cosmetics to protect the skin from ultraviolet rays occupies a large part in the cosmetics market. Until a few years ago, sunscreen products were typical of sunscreens, but recently sunscreens, bubble creams, functional powder cosmetics, and sunscreens have become more diverse than before. Especially, in addition to ultraviolet shielding function, a variety of compound formulations including various functions have been diversified. The kinds and production products of ultraviolet shielding products are steadily increasing every year.

The ultraviolet screening function product is analyzed as growth factor that has been recently sold steadily, in that ultraviolet rays directly irradiated to the atmosphere are increased due to destruction of the ozone layer and that it is used regardless of the season. In addition, whitening or wrinkle-improving functional products are sold by women after age of starting cosmetics, while sun protection products are sold without distinction between men and women, and especially sun protection products for infants are separately produced and sold , Which is the reason for the increase in production compared to other functional cosmetics.

The ultraviolet screening cosmetics generally contain ultraviolet light blocking agents such as titanium dioxide (TiO ₂ ) and zinc oxide (ZnO), and ethylhexyl methoxycinnamate (OMC), which mainly absorbs the UV-B region. Organic UV-blocking agents such as Butyl Methoxydibenzoylmethane (BMDBM, avobenzone), which mainly absorb UV-A, are the most commonly used.

In addition, the KFDA has announced 20 kinds of sunscreen agents including ultraviolet scattering agents that physically scatter ultraviolet rays and ultraviolet absorbers that absorb ultraviolet rays themselves. Examples of the ultraviolet scattering agent include oxides such as titanium, zinc, zirconium and cesium. Examples of ultraviolet absorbers include para-aminobenzoic acid (PABA) and its derivatives, salicylic acid derivatives, cinnamic acid derivatives such as octylmethoxycinnamate, Substituted benzotriazole-substituted polyorganosiloxane, and the like.

In the case of inorganic sunscreen agents, there is a new problem of increased phototoxicity due to nanotization and possibility of penetration into the human body. In recent years, the organic and inorganic sunscreens There is a growing interest in the art of organic-inorganic mixing that can compensate for the disadvantages while maintaining the effectiveness of sunscreen agents.

As a technique for mixing an organic sunscreen agent and an inorganic powder, Korean Patent Laid-Open No. 10-2011-0001539 discloses a skin cosmetic composition containing a skin defect covering effect, a skin tone correcting effect, a hollow defect enhancing effect of causing skin trouble and skin allergy, Discloses a technique relating to a hollow spherical silica composite pigment in which an organic UV blocking agent is carried in the pores of the spherical silica. The inorganic powder is coated with manganese or silicone oil to solve the problems caused by the charge of the inorganic powder, , A toilet paper property, and the like are known in Korean Patent Registration No. 10-1142233.

In particular, BMDBM represented by the following formula (1) was registered as a patent in 1973, first approved in 1978 to apply to the product in the EU and approved by the FDA in 1988 and is now widely used.

≪ Formula 1 >

In particular, BMDBM is a derivative of dibenzoylmethane that can block and absorb ultraviolet A and is well soluble in oil. BMDBM is widely used in sunscreen products because it absorbs ultraviolet rays in a longer wavelength range than other ultraviolet organic absorbents and converts them into relatively stable infrared rays (heat). The compound exhibits the maximum absorption capacity in the region of 357 nm. Since it is an aromatic compound, it has excellent ability to capture ultraviolet ray A, but when it is absorbed into the body, it can be added to cosmetic formulations in Korea including FDA There is a limit on the usage.

However, it is important to select a solvent which can dissolve the compound well when it is applied to an emulsion formulation such as a sunscreen powder. It is insoluble in silicone, mineral oil and ester oil having a straight chain structure, and has a property of being dissolved in an oil having an aromatic structure. Although BMDBM has a characteristic of dissolving in OMC, there is a characteristic that light stability is poor when it is used with an organic absorbent of Cinnamic Acid series. Therefore, it is necessary to pay attention to selection of a solvent which can dissolve the compound when the compound is used.

Accordingly, the present inventors have applied butylmethoxydibenzoylmethane coated ultraviolet light having the ability to apply the compound to a powdery cosmetic to improve solubility and light stability and to block ultraviolet rays that adversely affect skin including UV-A. The blocking composite powder has been developed and the present invention has been completed.

Accordingly, it is an object of the present invention to provide an inorganic composite powder coated with butylmethoxydibenzoylmethane (BMDBM) on an inorganic powder to simultaneously block not only UV-A but also UV-B, and a process for producing the same .

Another object of the present invention is to provide a cosmetic composition for ultraviolet rays by adding an inorganic composite powder having UV-B blocking ability as well as UV-A to a powder cosmetic composition.

The above object of the present invention is also achieved by a process for producing a butylmethoxydibenzoylmethane (BMDBM) base which is an organic ultraviolet absorbent; Coating the BMDBM with different concentrations on the inorganic powder to prepare composite powders coated with BMDBM having different concentrations; Determining the coating concentration of BMDBM having an optimal blocking effect by measuring the blocking index of UV-A and UV-B of each of the composite powders coated with BMDBM having different concentrations; The composite powder coated with the BMDBM concentration having the optimal blocking effect was formulated to evaluate the blocking index of UV-A and UV-B.

The present invention has an effect of providing an inorganic composite powder having both UV-A and UV-B blocking ability by coating the organic ultraviolet absorber BMDBM at a most preferable concentration to a inorganic powder and a method for producing the same.

In addition, the present invention has an excellent effect of providing a UV-blocking cosmetic composition containing, as an active ingredient, a composite powder having both UV-A and UV-B blocking ability simultaneously.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process drawing showing a BMDBM-coated composite powder manufacturing process of the present invention. FIG.
Fig. 2 is a graph showing the result of scanning the ultraviolet barrier index of each part divided into twelve parts by applying the Talc used as the inorganic powder of the present invention.
FIG. 3 is a graph showing the result of scanning the ultraviolet barrier index of each part by dividing the coated part of the composite powder coated with BMDBM 2% of the present invention into 12 parts.
FIG. 4 is a graph showing the result of scanning the ultraviolet barrier index of each part by dividing the coated part of the composite powder coated with BMDBM 4% of the present invention into 12 parts.
FIG. 5 is a graph showing the result of scanning the ultraviolet barrier index of each part by dividing the coated part of the composite powder coated with the present invention 6% BMDBM into 12 parts.
FIG. 6 is a graph showing a result of scanning the ultraviolet barrier index of each part by dividing the entire coated portion of the composite powder coated with the BMDBM 8% of the present invention into 12 parts.
7 is a graph showing the correlation between the concentration of BMDBM of the present invention and the ultraviolet barrier index after measuring the SPF and UVA-PF of the composite powder coated with BMDBM according to the present invention (2, 4, 6, 8% .
FIG. 8 is a graph showing a result obtained by applying the loose powder without the composite powder coated with the BMDBM of the present invention and dividing the coated part into 12 parts, and scanning the UV blocking index of each part.
FIG. 9 is a graph showing a result obtained by applying a loose powder containing a composite powder coated with 2% of BMDBM according to the present invention as an active ingredient, dividing the entire coated part into 12 parts, and scanning the UV blocking index of each part.
FIG. 10 is a graph showing a result obtained by applying a loose powder containing a composite powder coated with 4% of BMDBM according to the present invention as an active ingredient, dividing the entire coated part into 12 parts, and scanning the UV blocking index of each part.
FIG. 11 is a graph showing the results of scanning the UV blocking index of each part by dividing the entire applied part after application of the loose powder containing the composite powder coated with 6% of BMDBM according to the present invention as an active ingredient.
FIG. 12 is a graph showing a result obtained by applying loose powder containing an 8% coated composite powder of BMDBM according to the present invention as an active ingredient, dividing the entire applied portion into 12 parts, and scanning the UV blocking index of each part.
FIG. 13 is a graph showing a result obtained by applying a loose powder containing a composite powder coated with 2.4% of BMDBM according to the present invention as an active ingredient, dividing the entire applied portion into 12 parts and scanning UV rays of each part.
14 is a graph showing the correlation between the concentration of BMDBM and the ultraviolet barrier index of each of the loose powders containing the composite powder coated with the BMDBM according to the present invention as the active ingredient, respectively.
15 is a schematic view of a composite powder in which BMDBM of the present invention is uniformly coated.

 The BMDBM-coated composite powder of the present invention is prepared by first preparing a BMDBM emulsion and then coating it with an inorganic powder (FIG. 1).

As the inorganic powder of the present invention, all inorganic powders applicable to powder cosmetic raw materials may be used as talc, mica, sericite, silica kaolin, elite, zeolite, etc., but most preferably, talc is used.

Hereinafter, the specific configuration of the present invention will be described in detail by way of examples, but the scope of the present invention is not limited to these examples, but the same as achieved through a change in process order, numerical value, etc. within the scope of the embodiments of the present invention. Or similar inventions.

< Example  1> invention BMDBM The coated Powder  Produce

In order to obtain a composite powder coated with BMDBM concentration by concentration of the present invention, an emulsion containing BMDBM concentration was prepared. The emulsion is prepared by adding BMDBM to C12-15 Alkyl benzoate, which is pre-warmed to 70 to 80 ° C. by concentration (2, 4, 6, 8 wt%), and dissolved in the same temperature range for 20 minutes. The BMDBM lysate was added to purified water previously warmed to 70 to 80 ° C., and then mixed at 2,500 to 3,500 rpm for 30 minutes in the same temperature range, followed by the addition of Lecithin, which was then added at 2,500 to 3,500 rpm for 30 minutes at 70 to 75 ° C. Mixing yielded BMDBM mixtures at four different concentrations. The four mixtures were cooled to room temperature to prepare four BMDBM emulsions.

Preferred concentrations of BMDBM, purified water, and Lecithin for preparing four emulsions containing the BMDBM by concentration are shown in Table 1 below.

Hereinafter, the proportion of the composition added to the BMDBM-coated powder before the production of the present invention was calculated as weight%.

In order to coat the BMDBM emulsion prepared above with an inorganic powder, the purified water was heated to 80 to 85 ° C separately, and then the inorganic powder was added in a weight% based on BMDBM concentration as shown in the following Table 1, and then 1,500 to 2,000 and stirred at rpm for 30 minutes to obtain an inorganic powder mixture. Four kinds of emulsions were separately added to the inorganic powder mixture and BMDBM was separately added. The mixture was stirred at 1,500 to 2,000 rpm for 30 minutes.

The mixture of the inorganic powder solubles and the BMDBM emulsion was allowed to stand at room temperature for 24 hours and aged. The four aged materials were respectively filtered, dried and pulverized to have a water content of 1% or less, Four coated composite powders were obtained and used as a disclosure material.

The present invention BMDBM-coated powder composition
Emulsion manufacturing Coating Powder Manufacture
BMDBM mixture
Purified water
(weight%)

Lecithin (% by weight)
Purified water
(weight%)
Inorganic powder
(weight%)
BMDBM containing
Emulsion (% by weight) BMDBM
(weight%) C12-15alkyl benzoate (wt%) Talc Vasto (2%) 2.0 3.0 92.5 2.0 600.0 92.5 100.0 Talc Vasto (4%) 4.0 6.0 86.5 3.0 600.0 86.5 100.0 Talc Vasto (6%) 6.0 9.0 80.5 4.0 600.0 80.5 100.0 Talc Vasto (8%) 8.0 12.0 75.5 4.0 600.0 75.5 100.0

< Example  2> invention BMDBM The coated Powder  Measuring ultraviolet shielding index

The blocking index (SPF) for UV-B and the blocking index (UVA-PF) for UV-A were measured after coating the inorganic BMDBM of the present invention with the respective concentrations of 2, 4, 6 and 8% -A &lt; / RTI &gt; and &lt; RTI ID = 0.0 &gt; UV-B &lt; / RTI &gt; After coating the composite powder (Talc Vasto 2, 4, 6, 8%) prepared by coating the BMDBM according to the present invention on the talc surface concentration, the coated part was divided into 12 parts, and the UV blocking index of each part was measured. The average value of the values was regarded as an ultraviolet barrier index of the present invention.

Before measuring the ultraviolet barrier index of the present invention, the ultraviolet barrier index of Talc not coated with BMDBM was measured to be 1.76 and UVA-PF was measured to be 1.72, indicating that ultraviolet blocking ability of the talc raw material was not observed 2). This is the result of an experiment that verified the theory that UV or silicone is coated on inorganic powder, which is a general theory, does not have UV blocking effect.

The coated portion of the composite powder (Talc Vasto 2%) prepared by coating the BMDBM of the present invention at a concentration of 2% on the talc surface was divided into 12 parts and the values of UV index of each part were as shown in FIG. 3 , And the average value of the above-mentioned 12 measurement values was taken as the UV index of the present invention. As a result of the measurement, the ultraviolet barrier index SPF was 5.63 and UVA PF was 14.1. Compared with the Talc raw material, the SPF was not measured very high, but the UVA PF value was found to be 10 or more, especially in the 350-360 nm range. This suggests that the raw material BMDBM has a high blocking effect on the UV-A region than the UV-B region, considering that it is an excellent raw material for UV-A absorption.

The critical wavelength in the coating powder of the present invention was 379.1 nm.

The ultraviolet barrier index of the composite powder (Talc Vasto 4%) prepared by coating BMDBM of the present invention at a concentration of 4% on the talc surface was measured as 11.17 for SPF and 27.33 for UVA PF (FIG. 4) %) Coated powder and fertilizer showed 2 times synergy effect. Talc Vasto 4% UV absorption band was 350 ~ 360 nm, which is better than UV-B band absorption, which is similar to Talc Vasto (2%). That is, Talc Vasto 4% showed better ultraviolet absorption performance in the UV-A region and had a critical wavelength of 380.6 nm (FIG. 4).

As shown in FIG. 5, the ultraviolet barrier index of the composite powder (Talc Vasto 6%) prepared by coating BMDBM of the present invention at a concentration of 6% on the talc surface was 26.73 for SPF and 35.13 for UVA PF. The ultraviolet blocking effect of Talc Vasto 6% coated powder of the present invention showed not only the UV-A but also the UV-B region, which shows UV blocking effect unlike the 2% and 4% coated powder.

In the case of SPF, Talc Vasto was measured from 6% to 26.73, which was about twice as high as that of SPF 11.17. Considering the increase of the SPF measurement value and the point at which the maximum absorption wavelength band is widened, it was found that the 6% coated powder had an excellent ultraviolet shielding ability not only in the UV-A region but also in the UV-B region.

As a result of Talc Vasto 6% ultraviolet shielding experiment, it was confirmed that the coating amount of BMDBM was increased to 6% or more, so that UV-B region as well as UV-A region had ultraviolet blocking ability. The critical wavelength of Talc Vasto 6% coated powder of the present invention was 386 nm (FIG. 5).

The ultraviolet barrier index of the composite powder (Talc Vasto 8%) prepared by coating the BMDBM of the present invention at a concentration of 8% on the talc surface was 35.97 for the SPF and 49.97 for the UVA PF, and the maximum UV absorption wavelength band was the UV- And increased with SPF and UVA-PF, which was similar to the result of Talc Vasto (6%). The critical wavelength of Talc Vasto 8% coated powder of the present invention was 386 nm (FIG. 6).

After coating different concentrations of BMDBM on the above talc, the UV protection index (SPF, UVA-PF) was measured to confirm the effect of blocking UV (UV-A and UV-B) of the four BMDBM coated powders. As the amount increased, the UV protection index increased at a constant rate. In particular, coating powders with BMDBM of 6% and 8% showed excellent ultraviolet shielding ability in UV-B as well as UV-A. Critical Wavelength was 380nm for BMDBM 2% and 4% Coated Powder, whereas it increased to 386nm for BMDBM 6% and 8% Coated Powder. As the BMDBM coating amount increased, ultraviolet The area also showed a slight increase.

As shown in the following Table 2 and FIG. 7, it was found that as the coating concentration of BMDBM increases, the UV blocking index such as SPF and UVA PF increases.

The ultraviolet barrier index and Critical Wavelength SPF
(UV-B) UVA PF
(UV-A) Critical Wavelength (nm) Talc Vasto (2%) 5.63 14.1 379.1 Talc Vasto (4%) 11.17 27.33 380.6 Talc Vasto (6%) 26.73 35.13 386 Talc Vasto (8%) 35.97 49.97 386

&Lt; Example 3 > Measurement of ultraviolet barrier property in formulations containing powder coated with BMDBM of the present invention

Four types of BMDBM composite powders (BMDBM 2, 4, 6, and 8% coated talc) coated with different concentrations were added to loose powder in 30% increments, respectively, in the formulations containing powder of the present invention coated with BMDBM To measure the ultraviolet barrier index of the finished product. The mixing ratio of the loose powder containing the powder coated with BMDBM of the present invention as an active ingredient is shown in Table 3 below.

The purpose of the present embodiment is to confirm whether the UV shielding index such as SPF and UVA-PF increases as the BMDBM coating concentration increases when the composite powder coated with BMDBM is applied to cosmetic formulations.

The mixing ratio of loose powder to which BMDBM coating powder of the present invention is applied Ingredient Blank
(weight%) A
(weight%) B
(weight%) C
(weight%) D
(weight%) E
(weight%) Talc to 100 to 100 to 100 to 100 to 100 to 100 Talc Vasto
(Coating powder containing 2,4,6,8 wt% BMDBM) - 30.00 30.00 30.00 30.00 - Talc, Magnesium Stearate 15.00 15.00 15.00 15.00 15.00 15.00 Silica 5.00 5.00 5.00 5.00 5.00 5.00 Nylon-12 1.00 1.00 1.00 1.00 1.00 1.00 CI 77492, Mica, Triethoxycapryllysilane 2.00 2.00 2.00 2.00 2.00 2.00 CI 77491, Mica, Triethoxycapryllysilane 0.34 0.34 0.34 0.34 0.34 0.34 CI 77499, Mica, Triethoxycapryllysilane 0.10 0.10 0.10 0.10 0.10 0.10 Butyl Methoxydibenzoylmethane - 2.40 Hexyl Laurate 0.80 0.80 0.80 0.80 0.80 0.80 Diethylhexyl Maleate 0.20 0.20 0.20 0.20 0.20 0.20

Blank: Experimental group in which no functional ingredient was added,

A: 2% Talc Vasto coated powder application group,

B: 4% Talc Vasto coated powder application test group

C: 6% Talc Vasto coated powder application group,

D: 8% Talc Vasto coated powder application group,

E: BMDBM 2.4% test group

※ Reference

8% BMDBM Coating Powder × Formulation Application 30% = 2.4% (BMDBM content added to the final product formulation) 2.4% BMDBM added directly to loose powder

Separately, it was confirmed whether there was a difference in the ultraviolet barrier index between the case of adding BMDBM directly to the formulation and the case of adding the coating powder, while maintaining the same amount of pure BMDBM added to the article. Namely, among the four coating powders, 2.4% of pure BMDBM contained in the 8% coated BMDBM powder was separately added to the formulation to determine whether there is a difference in the ultraviolet barrier index when compared with the formulation containing 8% Talc Vasto The purpose is to verify.

The coated portion of the loose powder containing Talc Vasto 2, 4, 6, and 8% as the active ingredient, prepared by coating the BMDBM of the present invention on the basis of the talc surface concentration, was divided into 12 parts, And the average value of the 12 measurements was used as the UV index of the present invention.

Prior to this experiment, the ultraviolet barrier index of the loose powder to which BMDBM coated powder and functional UV blocking material were not added at all was confirmed as shown in FIG.

As a result of the experiment, it was impossible to confirm the ultraviolet blocking ability at all in the formulations not containing the ultraviolet shielding raw material. The SPF and UVA-PF values of the loose powder, which does not contain the ultraviolet shielding ingredient, are less than 1.0.

The ultraviolet barrier index of the present invention is 30% applied to the loose powder of the composite powder (Talc Vasto 2%) coated with the BMDBM of the present invention, and the content of BMDBM applied to the formulation is 0.6%. As shown in FIG. 9, the SPF of the present test was 4.88 and the UVA-PF was 6.3. Thus, the UV-A region had more ultraviolet shielding ability than the UV-B region, UV blocking ability was confirmed. The critical wavelength in this experiment was confirmed to be 387.7 nm.

In the present invention, the ultraviolet barrier index of the composite powder (Talc Vasto 4%) coated with 4% of BMDBM and 30% of the loose powder was confirmed, and the content of BMDBM applied to the formulation was 1.2%. The SPF was 6.63 and the UVA-PF was 10.8 in this experiment, confirming that UV-A was more UV-blocking than UV-B as in the loose powder formulation with Talc Vasto 2% 4, Fig. 10). The critical wavelength in this experiment was confirmed to be 386.9 nm.

In the present invention, the ultraviolet barrier index of the 6% coated composite powder (Talc Vasto 6%) was 30% applied to loose powder, and the content of BMDBM applied to the formulation was 1.8%. The results of this experiment showed that the SPF was 7.43 and the UVA-PF was 15.09 according to the average of the scan values in FIG. 11. As in the formulation in which Talc Vasto 2% and Talc Vasto 4% -A region was confirmed to have UV blocking ability (Table 4). The critical wavelength in this experiment was confirmed to be 385.9 nm.

The ultraviolet barrier index of the product obtained by applying 30% of the composite powder coated with 8% of the present invention (Talc Vasto 8%) to loose powder was confirmed as shown in FIG. 12, and the content of BMDBM applied to the formulation was 2.4% to be.

The SPF and UVA-PF in this experiment were 11.54 and 34.19, respectively, and UV-A was the highest in the UV-A range compared with the formulation tested with Talc Vasto 2%, 4% and 6% Table 4). The critical wavelength in this experiment was confirmed to be 385.6nm.

As shown in FIG. 13, as the coating density of BMDBM increases, the UV blocking index such as SPF and UVA PF rises and the correlation can be confirmed.

The ultraviolet barrier index of loose powder containing Talc Vasto coated with BMDBM of the present invention as an active ingredient SPF
UV-B UVA PF
UV-A Critical Wavelength (nm) Talc Vasto (2%) applied loose powder 4.88 6.3 379.1 Talc Vasto (4%) applied loose powder 6.63 10.8 386.9 Talc Vasto (6%) applied loose powder 7.43 15.09 385.9 Talc Vasto (8%) applied loose powder 11.54 34.19 385.6

In order to compare the ultraviolet barrier index of the loose powder containing the inorganic powder coated with the present invention BMDBM as an active ingredient, when the Talc Vasto 8% is applied to the formulation at 30%, the concentration of pure BMDBM becomes 2.4% % Were added to the loose powder. In this example, when the same amount of BMDBM was applied to a formulation coated with inorganic powder and when applied to a formulation using BMDBM pure material, the ultraviolet barrier index was 8.29 for SPF and 16.22 for UVA PF, and the pure material BMDBM was applied to the formulation It was confirmed that the UV-A and UV-B regions had a high UV-blocking index when applied to BMDBM coated powders of the present invention (Fig. 14).

This is because it is difficult to uniformly mix the BMDBM when it is applied to the formulations and to have a certain ultraviolet shielding ability. On the other hand, in the case of the BMDBM coated powder of the present invention, BMDBM is uniformly coated on the surface of the inorganic powder, Therefore, it is considered to have a better ultraviolet shielding index (Fig. 15).

As described above, the present invention is an inorganic ultraviolet-coated inorganic butyl methoxydibenzoylmethane (BMDBM) coated with an inorganic powder at different concentrations and coated with BMDBM having not only UV-A but also UV-B blocking ability. Since it has an excellent effect of providing a sunscreen cosmetics containing the composite powder as an active ingredient is a very useful invention in the functional cosmetics industry.

Claims (5)

Adding butylmethoxydibenzoylmethane (BMDBM) to C12-15 Alkyl Benzoate and then mixing at 70-80 ° C. for 20 minutes; Adding the BMDBM mixture to purified water and dispersing by heating at 70 to 80 ° C. for 30 minutes; Adding lecithin to the BMDBM dispersion and mixing for 30 minutes at 2,500 to 3,500 rpm at 70 to 75 ° C. to obtain a BMDBM emulsion; Cooling the BMDBM emulsion to room temperature; Separately from the inorganic powder is added to the purified water heated to 80 to 85 ℃ stirred for 30 minutes at 1,500 to 2,000 rpm to obtain an inorganic powder dispersion; Stirring the inorganic powder dispersion and the BMDBM emulsion together at 1,500 to 2,000 rpm for 30 minutes to obtain a mixture coated with BMDBM on the inorganic powder; Standing and ripening the mixture at room temperature for 24 hours to obtain a matured product; Method for producing an inorganic composite powder for simultaneous blocking UV-A and UV-B, characterized in that the dried material is dried to a moisture content of 1% or less and then pulverized and filtered with a 100 to 200 mesh vibrating body. Inorganic composite powder for simultaneously blocking UV-A and UV-B coated with butylmethoxydibenzoylmethane (BMDBM) prepared by the method of claim 1 coated on the inorganic powder. [Claim 3] The inorganic inorganic UV-A and UV-B barrier according to claim 1 or 2, wherein the inorganic powder is any one selected from the group consisting of talc, mica, sericite, silica kaolin, elite and zeolite. Composite powder. The inorganic compound powder for UV-A and UV-B simultaneous blocking according to claim 1 or 2, wherein the butylmethoxydibenzoylmethane (BMDBM) is used in an amount of 0.1 to 90% by weight based on the entire inorganic composite powder. A cosmetic composition for simultaneously blocking UV-A and UV-B, comprising an inorganic composite powder for simultaneously blocking UV-A and UV-B according to claim 2.

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