Polyester polyol nanocapsules, compositions thereof, and methods of use
申请人:L'OREAL
公开号:US20030224060A1
公开(公告)日:2003-12-04
The present invention relates generally to nanocapsules having a core-envelope structure where the core contains a lipophilic active agent and the envelope contains at least one polyester polyol obtained by polycondensation of an aliphatic dicarboxylic acid with at least two alkanediols or with at least one alkanediol and at least one hydroxyalkyl alkanediol. These nanocapsules make it possible to stabilize lipophilic active agents that are difficult to stabilize, especially retinol esters such as retinyl propionate.