| abstract |
(57) [Summary]nThe present invention relates to an undecylenic acid derivative, which is a product obtained by reacting undecylenic acid with a hydrophilic organic macromolecule having a primary alcohol and / or a primary amine group. Is. Conveniently, the reaction product is subjected to a lyophilization step. The abovementioned derivatives have antiperspirant, antidandruff, anti-zinc activity and can also be the main or auxiliary preservatives and emulsifiers for cosmetic or pharmaceutical compositions. |