URETHAN-DERIVATE, IHRE HERSTELLUNG UND VERWENDUNG ALS HAUTBEFEUCHTENDES MITTEL IN KOSMETISCHEN UND PHARMAZEUTISCHEN ZUBEREITUNGEN ZUR BEHANDLUNG TROCKENER HAUT

Urethane derivatives of general formula in which R denotes a -CH2OH, -CHOH-CH3 or -(CH2)3-NH-CO-NHY group, Y denoting -H or COOR', R' denotes an optionally unsaturated, linear or branched alkyl group containing from 8 to 24 carbon atoms or a monocyclic cycloalkyl group substituted by an alkyl, in which the total number of carbon atoms is greater than or equal to 10, and the salts of the compounds of formula I and the mixtures of compounds of formula I and/or of their salts; their preparation and their application especially as hydrating agents in cosmetic or pharmaceutical compositions intended for the treatment of dry skins.