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6606547 
Legal Material 
Patent 
Microcapsules with an aqueous core containing at least one water-soluble cosmetic or dermatological active principle and cosmetic or dermatological compositions containing them 
Biatry, B; Lheureux, E 
2003 
L'Oreal, Paris, France 
2 
BCI:BCI200300174295 
The present invention relates to microcapsules with an aqueous core containing at least one water-soluble cosmetic or dermatological active principle, and with a polymeric and/or waxy envelope, in which the said envelope consists of at least one polymer chosen from polycaprolactone, poly(3-hydroxybutyrate), poly(ethylene adipate), poly(butylene adipate), cellulose esters of at least one C1 -C4 carboxylic acid, copolymers of styrene and of maleic anhydride, copolymers of styrene and of acrylic acid, styrene-ethylene/butylene-styrene block terpolymers, styrene-ethylene/propylene-styrene block terpolymers and terpolymers of ethylene, of vinyl acetate and of maleic anhydride, and/or of at least one wax chosen from beeswax, polyglycerolated beeswax, hydrogenated plant oils, paraffin with a melting point above 45degree C., and silicone waxes.