Amphiphilic lipid compounds, process for their preparation and their applications especially in cosmetics and dermopharmacy

摘要

Amphiphilic lipid compound having the formula: ##STR1## in which: R. sub.1 denotes a C.sub.7 -C.sub.21 alkyl or alkenyl radical, P PR.sub.2 denotes a saturated or unsaturated C.sub.7 -C.sub. 31 hydrocarbon radical,PPCOA denotes a group chosen from the following groups:PPa) COOM, M being H, Na, K, NH.sub. 4 or a substituted ammonium ion derived from an amine,PPb) ##STR2## B being a radical derived from mono- or polyhydroxylated primary or secondary amines and R denoting a hydrogen atom or a methyl, ethyl or hydroxyethyl radical,PPc) ##STR3## Q denoting a substituted aminoalkyl or ammonioalkyl radical and R having the meaning indicated for b), andPPd) COOZ, Z representing the residue of a C.sub.3 -C.sub.7 polyol, and a process for its preparation. PPCosmetic or dermopharmaceutical composition comprising the said compound and especially an aqueous dispersion of liposomes.