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Double layered polymer capsules for the stabilization of carotenoids, the process for preparing the same, and the cosmetic composition containing the same

A double-layer polymer and carotene technology is applied in the direction of medical preparations, cosmetics, and microcapsule preparations containing active ingredients to achieve the effects of easy preparation, improvement of skin wrinkles, and easy fading

Active Publication Date: 2010-12-08
AMOREPACIFIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, these traditional methods are limited to the use of carotenoids in very small amounts as simple extracts, carotenoids with enhanced solubility in cosmetic compositions, or use of carotenoids as ingredients in cosmetic compositions.
That is, these traditional methods still do not address the solution to the stability problem of carotenoids

Method used

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  • Double layered polymer capsules for the stabilization of carotenoids, the process for preparing the same, and the cosmetic composition containing the same
  • Double layered polymer capsules for the stabilization of carotenoids, the process for preparing the same, and the cosmetic composition containing the same
  • Double layered polymer capsules for the stabilization of carotenoids, the process for preparing the same, and the cosmetic composition containing the same

Examples

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Embodiment

[0031] A random copolymer with cationic functional groups prepared by the procedure described below was used in this practice. 75% by weight, based on the weight of the polymer, of butyl methacrylate was mixed with 25% by weight, based on the weight of the polymer, of (methacryloyl)ethyldimethylamine. The mixture was added to an aqueous solution of 0.5% by weight of 2,2′-azobisisobutylamidine dihydrochloride, and the polymerization reaction was carried out at 70° C. under a nitrogen atmosphere under stirring at 250 rpm. hours to obtain a polymer emulsion. The final polymer obtained is in powder form by precipitation with sodium chloride, recrystallization with acetone / water to remove unreacted monomers, and precipitation with sodium chloride again to obtain a powder product. The resulting product also needs to be filtered and washed several times, and vacuum-dried to obtain a powdery cationic polymer.

[0032] To prepare polymer capsules loaded with β-carotene, 2 g of the po...

Embodiment 2

[0035] Capsules were prepared according to the same procedure as in Example 1, except that lycopene was used as an active substance instead of β-carotene.

Embodiment 3

[0037] Capsules were prepared according to the same steps as in Example 1, except that astaxanthin as an active substance was used instead of β-carotene.

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Abstract

The present invention relates to a double-layered polymer capsule for stabilizing a carotenoid such as ss- carotin and a method for preparing the same, and a cosmetic composition comprising the same, and more particularly, to a polymer capsule prepared by preparing a cationic polymer capsule containing a carotenoid and coating the surface of the capsule with an anionic polymer. The double-layered polymer capsule according to the present invention is a stabilizing system to preventing degeneration of an active material by the outside destructive environment and effective on materials susceptible to oxidation.

Description

technical field [0001] The present invention relates to a double-layer polymer capsule for stabilizing carotenoids such as β-carotene, a preparation method thereof, and a cosmetic composition containing the double-layer polymer capsule. More specifically, the present invention relates to a polymer capsule obtained by encapsulating easily oxidizable carotenoids in a cationic polymer and placing the cationic group on the outside of the initially prepared capsule to interact with the anionic polymer. The shell self-assembles to form a "core-shell" type bilayer structure. Background technique [0002] There have been studies hoping to use carotenoids in cosmetics, which have excellent performance in improving skin wrinkles and anti-aging due to cell regeneration and anti-oxidation. However, they have a problem in that they are easily discolored, deteriorated by contact with air or water, and their titers also become lower over time. Many methods have been tried to stabilize ca...

Claims

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Application Information

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IPC IPC(8): C08J3/12
CPCB01J13/125A61K8/8147A61K8/8152A61K2800/63A61Q19/08A61K8/11B01J13/22A61K8/8117A61K2800/412C08J3/12C08J7/0427
Inventor 金容震安智惠朴昶壎曹濬喆
Owner AMOREPACIFIC CORP
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