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 method for improving makeup durability comprising a step of applying a cosmetic composition to the skin, wherein the cosmetic composition comprises a powder complex in which an amphipathic copolymer represented by the following Chemical formula (1) is adsorbed to a powder, ##STR00002## wherein, 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, m and n are an integer of 1 or more, respectively, and m + n < 1,000,000, wherein the powder is hydrophobized powder, and the amphipathic copolymer is adsorbed on a surface of the hydrophobized powder, wherein the amphipathic copolymer is attached to the powder in a powder coating step, and wherein the powder complex is dispersed in an aqueous phase in the cosmetic composition.

2. The method for improving makeup durability according to claim 1, wherein an adsorption amount of the amphipathic copolymer is the amphipathic copolymer of 5 to 30 % by weight based on a total weight of the powder.

3. The method for improving makeup durability according to claim 1, wherein the amphipathic copolymer is at least one selected from the group consisting of amino-2-methyl-1,3-propanediol-acrylate copolymer, and aminomethyl-2-propaneol-acrylate copolymer.

4. The method for improving makeup durability according to claim 3, wherein hydrophobization of the powder is performed by a water repellent treatment agent comprising at least one selected from the group consisting of silicone compound, alkyl silane compound, alkyl titanate compound, fluorine compound, amino acid compound, fatty acid compound and mixtures thereof.

5. The method for improving makeup durability according to claim 4, wherein the silicone compound comprises at least one selected from the group consisting of dimethicone, methicone, hydrogen dimethicone, trietoxycaprylsilane, acrylic silicon, cetyldimethicone copolymer, (dimethicone/methicone)copolymer, trietoxysilylethylpolydimethylsiloxyethyldimethicone, triethoxysilylethylpolydimethylsiloxyethylhexyldimethicone, (acrylate/acrylate tridecyl/methacrylate triethoxysilylpropyl/methacrylate dimethicone)copolymer, PEG-11 methyletherdimethicone, polyglyceryl-3 disiloxanedimethicone, (stearoxymethicone/di methicone)copolymer, PEG/PPG-10/3 oleyletherdimethicone, trimethylsiloxysilicate, methylphenylsilicon, dimethicone copolymer, (dimethicone/vinyldimethicone)copolymer, (acrylate alkyl/di methicone)copolymer, and (aminomethylaminopropylmethicone/dimethicone)copolymer.

6. The method for improving makeup durability according to claim 4, wherein the alkyl silane compound comprises at least one selected from the group consisting of dimethylmethoxysilane, methyltrimethoxysilane, dimethyldiethoxysilane, methyltrietoxysilane, diphenylethoxysilane, phenyltriethoxysilane, 3-glycidoxypropyltriethoxysilane, 5,6-epoxyhexyltriethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltriethoxysilane, 3-acryloxypropyltriethoxysilane, 3-methacryloxypropyltriethoxysilane, N-(2-aminoethyl)-3-aminopropyltriethoxysilane, 3-aminopropyltriethoxysilane, 3-mercaptopropylmethyldiethoxysilane, and n-octyltriethoxysilane.

7. The method for improving makeup durability according to claim 4, wherein the alkyl titanate compound comprises at least one selected from the group consisting of isopropoxytitaniumtristearate, triisopropoxytitaniumisostearate, isopropoxytitaniumtripalmitate, and isopropoxytitaniumtrimyristate.

8. The method for improving makeup durability according to claim 4, wherein the fluorine compound comprises at least one selected from the group consisting of trifluoropropyltrimethoxysilane, trifluoropropyltriethoxysilane, and tridecafluorooctyltrimethoxysilane.

9. The method for improving makeup durability according to claim 4, wherein the amino acid compound comprises at least one selected from the group consisting of N-acyl amino acid metal salt and the like, and the precursor of the N-acyl amino acid metal salt, N-acyl amino acid may include for example, N-acyl-N-methyl-glycine, N-acyl-N-methyl-b-alanine, and N-acyl-L-glutamate.

10. The method for improving makeup durability according to claim 4, wherein the fatty acid compound comprises at least one selected from the group consisting of aluminum myristate, sodium myristate, calcium myristate, magnesium stearate, aluminum stearate, sodium stearate, calcium stearate, and palmitic acid, dimethiconol stearate, and dimethiconol hydroxystearate.

11. The method for improving makeup durability according to claim 4, wherein the water repellent treatment agent comprises aluminum stearate.

12. The method for improving makeup durability according to claim 3, wherein the powder comprises at least one selected from the group consisting of inorganic powder and organic powder.

13. The method for improving makeup durability according to claim 12, wherein the inorganic powder comprises at least one selected from the group consisting of titanium dioxide, zirconium oxide, zinc oxide, cerium oxide, magnesium oxide, barium sulfate, calcium sulfate, calcium carbonate, magnesium carbonate, talc, mica, kaolin, sericite, white mica, synthetic mica, phlogopite, lepidolite, biotite, lithia mica, silicate, silica acid anhydride, aluminum silicate, magnesium silicate, calcium silicate, barium silicate, strontium silicate, tungstic acid metal salt, hydroxyapatite, vermiculite, haidilite, bentonite, montmorillonite, hectorite, zeolite, ceramic powder, calcium phosphate, dibasic, alumina, aluminum hydroxide, boron nitride, silica, iron oxide red, iron sulfate, black iron oxide, cobalt titanate, crimson mica.

14. The method for improving makeup durability according to claim 12, wherein the organic powder comprises at least one selected from the group consisting of polyamide, polyester, polyethylene, polypropylene, polystyrene, polyurethane, benzoguanamine, polymethylbenzoguanamine, polytetraflouroguanamine, polytetrafluoroethylene, polymethylmethacrylate, vinyl resin, urea resin, phenol resin, fluorine resin, silicon resin, acrylic resin, melamine resin, epoxy resin, polycarbonate resin, divinylbenzene styrene copolymer, copolymer consisting of two kinds or more of the monomers of the compound, celluloid, acetyl cellulose, cellulose, polysaccharide, protein, CI pigment yellow, CI pigment orange, CI pigment green, silk powder, nylon powder, 12 nylon, 6 nylon, acrylic powder, and styrene acrylate copolymer.

15. The method for improving makeup durability according to claim 12, wherein the powder comprises at least one selected from the group consisting of titanium dioxide and zinc oxide.

16. The method for improving makeup durability according to claim 12, wherein the powder comprises zinc oxide.

17. The method for improving makeup durability according to claim 1, wherein the powder complex is prepared by a wet process or dry process.

18. The method for improving makeup durability according to claim 1, wherein the amphipathic copolymer is attached to the powder in a powder coating step comprising: providing a mixture comprising the amphipathic copolymer, the hydrophobized powder and a solvent, under conditions to produce the powder complex, separating non-reacted amphipathic copolymer from the powder complex, and purifying the powder complex.

19. The method for improving makeup durability according to claim 1, wherein the amphipathic copolymer is attached to the powder in a powder coating process comprising: dispersing the hydrophobized powder and the amphipathic copolymer in a solvent to form a mixture, and stirring the mixture under conditions sufficient to produce the powder complex.

20. A method for improving cleaning ability of a cosmetic composition comprising a step of applying the cosmetic composition to the skin, wherein the cosmetic composition comprises a powder complex in which an amphipathic copolymer represented by the following Chemical formula (1) is adsorbed to a powder, ##STR00003## wherein, 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, m and n are an integer of 1 or more, respectively, and m + n < 1,000,000, wherein the powder is hydrophobized powder, and the amphipathic copolymer is adsorbed on a surface of the hydrophobized powder, wherein the amphipathic copolymer is attached to the powder in a powder coating step, and wherein the powder complex is dispersed in an aqueous phase in the cosmetic composition.

Description

BRIEF DESCRIPITON 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 (.Math.m).

[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.

Preparation of Powder Complexes for Cosmetics - Preparation of Example 1 and Example 2

[0039] 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 di luted 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.

[0040] 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.

Comparative Evaluation of Water Dispersity of Example 1

[0041] 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.

Analysis of Particle Size Distribution of Example 1 and Example 2

[0042] 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.

Preparation of Cosmetic Compositions

Preparation of Suncream in an O/W Formulation - Preparation of Example 3 and Comparative Example 1

[0043] 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 uni formly 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 Raw material Example 3 Comparative 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 Distearate 3.0 g 3.0 g 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 Acryloyldimethyl Taurate Copolymer (and) squalane (and) polysorbate 60 1.0 g 1.0 g 9 1,2-Hexandiol 2.0 g 2.0 g 10 Purified water Remaining amount Remaining amount 11 Example 1 16.0 g - Total 100.0 g 100.0 g Evaluation of cleaning power of Example 3 and Comparative example 1

[0044] 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.

[0045] After applying 50 .Math.l 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 Cleaning power Example 3 ⊚ Comparative example 1 ○ ⊚ : Completely cleaned ○ : Excellent cleaning power △ : Normal cleaning power X : Not cleaned

[0046] 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.

Preparation of Suncream in a W/O Formulation - Preparation of Example 4 and Comparative Example 2

[0047] 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 Raw material Example 4 Comparative example 2 Comparative 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 Sulfonic Acid 4.0 g 4.0 g 4.0 g 5 1,2-Hexanediol 1.0 g 1.0 g 1.0 g 6 Purified water Remaining amount Remaining amount Remaining 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 Hectorite 1.0 g 1.0 g 1.0 g 15 PEG-10 dimethicone 4.0 g 4.0 g 4.0 g 16 Sorbitan Sesquiisostearate 0.5 g 0.5 g 0.5 g 17 MT-100TV - 5.0 g - 18 SUNZnO—NAS - 13.0 g - Total 100.0 g 100.0 g 100.0 g Evaluation of cleaning power of Example 4 and Comparative example 2

[0048] 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.

[0049] After applying 50 .Math.l 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 Cleaning power Example 4 ⊚ Comparative example 2 △ ⊚ : Completely cleaned ○ : Excellent cleaning power △ : Normal cleaning power X : Not cleaned

[0050] 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.

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

[0051] 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.

[0052] 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 700 rpm stirring In 30 minutes In 30 minutes after adding the cleaning agent In 120 minutes after adding the cleaning agent Comparative example 2 X X X Example 4 X ○ ⊚ Comparative example 3 ⊚ ⊚ ⊚ ⊚ : Completely cleaned ○ : Excellent cleaning power Δ : Normal cleaning power X : Not cleaned

[0053] 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.