COSMETIC POWDER COMPOSITE AND COSMETIC COMPOSITION CONTAINING SAME

Abstract

The present invention relates to a powder complex for cosmetics and a cosmetic composition comprising thereof. More specifically, the present invention relates to a powder complex for cosmetics for improving easy-to-clean of the cosmetic powder with water repellency and a cosmetic composition comprising thereof. The powder complex for cosmetic of the present invention has a technical feature that the amphipathic copolymer having a specific structure is adsorbed on the surface of the hydrophobized powder. The cosmetic composition according to the present invention can exhibit an excellent effect of cleaning, with excellent makeup durability.

Claims

1. A powder complex for cosmetics in which an amphipathic copolymer represented by the following Chemical formula (1) is adsorbed to a powder. ##STR00002## (In the Chemical formula (1), R is a C.sub.1˜C.sub.8 aliphatic hydrocarbon group, and AMP is aminomethyl-2-propanol or aminomethyl-2-methyl-1,3-propanediol. In addition, m and n are an integer of 1 or more, respectively, and m+n<1,000,000.)

2. The powder complex for cosmetics according to claim 1, wherein the powder is hydrophobized powder, and the amphipathic copolymer is adsorbed on the surface of the hydrophobized powder.

3. The powder complex for cosmetics according to claim 2, wherein the hydrophobization is performed by a water repellent treatment agent comprising silicone compound, alkyl silane compound, alkyl titanate compound, fluorine compound, amino acid compound, fatty acid compound and mixtures thereof.

4. The powder complex for cosmetics according to claim 1, wherein the amphipathic copolymer is adsorbed on the surface of the powder.

5. The powder complex for cosmetics according to claim 4, wherein the adsorption amount of the amphipathic copolymer is the amphipathic copolymer of 5 to 30% by weight based on the total weight of the powder.

6. The powder complex for cosmetics according to claim 1, wherein the amphipathic copolymer is at least one of amino-2-methyl-1,3-propanediol-acrylate copolymer and aminomethyl-2-propaneol-acrylate copolymer.

7. The powder complex for cosmetics according to claim 1, wherein the powder complex for cosmetics is prepared by a wet process or dry process.

8. A cosmetic composition comprising the powder complex for cosmetics according to claim 1.

9. The cosmetic composition according to claim 8, wherein the cosmetic composition further comprises at least one of a wetting agent and a dispersing agent.

10. The cosmetic composition according to claim 8, wherein the cosmetic composition is a cosmetic composition for blocking ultraviolet rays.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The following drawings attached to the present specification are intended to illustrate preferable examples, and play a role of further understanding the technical spirits of the present invention together with the aforementioned contents of the invention, and therefore the present invention should not be interpreted as limited only to those described in those drawings.

[0035] FIG. 1 is the result of comparing the water dispersity of titanium dioxide surface-treated with 17% aluminum stearate (A, left) and the powder complex in which an amphipathic copolymer is attached on titanium dioxide surface-treated by 17% aluminum stearate by applying the present invention (B, right).

[0036] FIG. 2 shows the result of the dynamic light scattering particle size distribution of Example 1 (A) and Example 2 (B) prepared according to the present invention as a graph. The y-axis of the graph represents the volume (%) and the x-axis represents the particle size (μm).

[0037] FIG. 3 shows the result of comprising the difference in water repellency and cleaning power of Example 4, Comparative example 2 and Comparative example 3. In each photograph, the left shows Comparative example 2, and the center shows Example 4, and the right shows Comparative example 3. The left photograph shows the photograph after stirring at 700 rpm for 30 minutes, and the center photograph shows the photograph after adding the cleaning agent and then stirring at 700 rpm for 120 minutes.

BEST MODE

[0038] Hereinafter, to help understanding of the present invention, it will be described in detail by examples. However, the examples according to the present invention may be modified in many different forms, and the scope of the present invention should not be interpreted as being limited to the following examples. The examples of the present invention are provided to more completely describe the present invention to those skilled in the art.

[0039] Preparation of Powder Complexes for Cosmetics—Preparation of Example 1 and Example 2

[0040] 50% ethanol dispersion of an amphipathic copolymer (trade name: MIHAPOL PAU-50, Miwon Commercial Co., Ltd.) of 600 parts by mass was added to a homo mixer, and diluted in ethanol of 400 parts by mass, and then titanium dioxide surface-treated by 17% aluminum stearate (trade name: MT-100TV, TAYCA corp.) of 1000 parts by mass was added and stirred at 6,000 rpm for 60 minutes. Then, the reactants were centrifuged at 5,000 rpm for 10 minutes to separate non-reacted amphipathic copolymer. Then, it was purified using purified water at 5,000 rpm for 10 minutes twice to prepare a powder complex in which the amphipathic copolymer was adsorbed in an amount of 23% by weight based on the total weight (Example 1). The weight of the powder based on the total weight of the powder complex was 35% by weight.

[0041] By the same process as above, using zinc oxide (trade name: SUNZnO-NAS, Sunjin Beauty Science), a powder complex in which the amphipathic copolymer was adsorbed in an amount of 8% by weight based on the total weight of the powder (Example 2) was prepared. The weight of the powder based on the total weight of the powder complex was 65% by weight.

[0042] [Comparative Evaluation of Water Dispersity of Example 1] The water dispersity of the powder complex prepared above (Example 1) and 17% aluminum stearate untreated with the amphipathic copolymer was comparatively experimented, and the result was shown in FIG. 1.

[0043] [Analysis of Particle Size Distribution of Example 1 and Example 2]

[0044] The analysis of the particle size of the powder complexes of Example 1 and Example 2 prepared above was performed. The result of the analyzed particle size distribution of the powder complexes using a dynamic light scattering particle size analyzer was shown in FIG. 2.

[0045] Preparation of Cosmetic Compositions

[0046] [Preparation of Suncream in an O/W Formulation—Preparation of Example 3 and Comparative Example 1]

[0047] Oil-in-water (O/W) suncream of Example 3 and Comparative example 1 was prepared by the composition of the following Table 1. The aqueous phase among the components shown in the following table was prepared by uniformly dissolving at a room temperature. The oil phase among the components shown in the following table was prepared by uniformly dissolving at 60° C., and then mixing the aqueous phase, to prepare cosmetic compositions.

TABLE-US-00001 TABLE 1 Comparative Raw material Example 3 example 1 1 Neopentyl Glycol Dicaprate 5.0 g 5.0 g 2 Cetyl Ethylhexanoate 5.0 g 5.0 g 3 Dimethicone 3.0 g 3.0 g 4 Polyglyceryl-3 Methylglucose 3.0 g 3.0 g Distearate 5 PEG-40 Stearate 0.5 g 0.5 g 6 MT-100TV — 6.8 g 7 Dipropylene Glycol 4.0 g 4.0 g 8 Hydroxyethyl Acrylate/Sodium 1.0 g 1.0 g Acryloyldimethyl Taurate Copolymer (and) squalane (and) polysorbate 60 9 1,2-Hexandiol 2.0 g 2.0 g 10 Purified water Remaining Remaining amount amount 11 Example 1 16.0 g — Total 100.0 g 100.0 g

[0048] Evaluation of Cleaning Power of Example 3 and Comparative Example 1

[0049] Using the oil-in-water (O/W) suncream of Example 3 and Comparative example 1 prepared as above, the cleaning power was evaluated by the following method.

[0050] After applying 50 μl of each cosmetic composition of Example 3 and Comparative example 1 prepared to skin, respectively, it was dried for 1 hour. Then, by rubbing with running water by hand 5 times and washing, a phenomenon in that each composition was removed was confirmed. The result of confirming the degree of cleaning using an ultraviolet light mode of JANUS (PIE Co., Ltd.) was shown in the following Table 2.

TABLE-US-00002 TABLE 2 Cleaning power Example 3 ⊚ Comparative example 1 ◯ ⊚: Completely cleaned ◯: Excellent cleaning power Δ: Normal cleaning power X: Not cleaned

[0051] As could be confirmed in the Table 2, it could be confirmed that the washability of the cosmetic composition was improved by applying the present invention.

[0052] [Preparation of Suncream in a W/O Formulation—Preparation of Example 4 and Comparative Example 2]

[0053] Water-in-oil (W/O) suncream of Example 4 and Comparative examples 2 and 3 was prepared by the composition of the following Table 3. The aqueous phase among the components shown in the following table was prepared by uniformly dissolving at a room temperature. The oil phase among the components shown in the following table was prepared by uniformly dissolving at 80° C., and then mixing the aqueous phase, to prepare cosmetic compositions.

TABLE-US-00003 TABLE 3 Comparative Comparative Raw material Example 4 example 2 example 3 1 Magnesium Sulfate 0.5 g 0.5 g 0.5 g 2 Tromethamine 2.0 g 2.0 g 2.0 g 3 1,3-Butylene glycol 10.0 g 10.0 g 10.0 g 4 Phenylbenzimidazole 4.0 g 4.0 g 4.0 g Sulfonic Acid 5 1,2-Hexanediol 1.0 g 1.0 g 1.0 g 6 Purified water Remaining Remaining Remaining amount amount amount 7 Example 1 12.0 g — — 8 Example 2 21.0 g — — 9 TXD555-AQ — — 9.0 g 10 SUNCLEAR-Z75AQS — — 17.5 g 11 Cyclopentasiloxane 31.5 g 13.5 g 31.5 g 12 Isostearic acid 0.5 g 0.5 g 0.5 g 13 Cetyl Ethylhexanoate 7.0 g 7.0 g 7.0 g 14 Disteardimonium 1.0 g 1.0 g 1.0 g Hectorite 15 PEG-10 dimethicone 4.0 g 4.0 g 4.0 g 16 Sorbitan 0.5 g 0.5 g 0.5 g Sesquiisostearate 17 MT-100TV — 5.0 g — 18 SUNZnO-NAS — 13.0 g — Total 100.0 g 100.0 g 100.0 g

[0054] Evaluation of Cleaning Power of Example 4 and Comparative Example 2

[0055] Using the water-in-oil (W/O) suncream of Example 4 and Comparative examples 2 and 3 prepared as above, the cleaning power was evaluated by the following method.

[0056] After applying 50 μl of each cosmetic composition of Example 4 and Comparative examples 2 and 3 prepared to skin, respectively, it was dried for 1 hour. Then, by rubbing with running water by hand 5 times and washing, a phenomenon in that each composition was removed was confirmed. The result of confirming the degree of cleaning using an ultraviolet light mode of JANUS (PIE Co., Ltd.) was shown in the following Table 4.

TABLE-US-00004 TABLE 4 Cleaning power Example 4 ⊚ Comparative example 2 Δ ⊚: Completely cleaned ◯: Excellent cleaning power Δ: Normal cleaning power X: Not cleaned

[0057] As could be confirmed in the Table 4, it could be confirmed that the washability of the cosmetic composition was improved by applying the present invention.

[0058] Evaluation of Water Repellency and Cleaning Powder of Example 4 and Comparative Example 2 to Comparative Example 3

[0059] By evaluating the water repellency and cleaning power of the cosmetic compositions of Example 4 and Comparative example 2 to Comparative example 3 prepared above by the following method, the result was shown in FIG. 3 and the following Table 5.

[0060] After applying 1 g of each cosmetic composition of Example 4 and Comparative examples 2 and 3 prepared on a glass plate, respectively, it was dried for 1 hour. Then, the degree of cleaning of the cosmetic compositions was confirmed by stirring at 700 rpm in 25° C. water. Then, a cleaning agent was added and it was stirred at 700 rpm for 120 minutes. At that time, in 30 minutes and 120 minutes after adding the cleaning agent, the degree of cleaning of each cosmetic composition was confirmed.

TABLE-US-00005 TABLE 5 In 30 minutes In 120 minutes 700 rpm after adding the after adding the stirring In 30 minutes cleaning agent cleaning agent Comparative X X X example 2 Example 4 X ◯ ⊚ Comparative ⊚ ⊚ ⊚ example 3 ⊚: Completely cleaned ◯: Excellent cleaning power Δ: Normal cleaning power X: Not cleaned

[0061] As could be confirmed in the Table 5 and FIG. 3, it could be confirmed that when applying the present invention, the water repellency was maintained in everyday life and therefore the makeup durability was excellent, whereas the easy-to-clean and washability was excellent by a cleaning agent.