DISPERSION CONTAINING DISPERSED BODIES, EACH COMPRISING AN INTERNAL DROP AND A MEMBRANE

摘要

The invention relates to a dispersion (10) containing a plurality of dispersed bodies (12) in a continuous phase (14). Each dispersed body (12) comprises an internal drop (16) receiving an active material (20). Each dispersed body (12) comprises, around the internal drop (16), a membrane (18) formed of an intermediate phase that is immiscible with the continuous phase (14) and totally surrounds the internal drop (16). Said dispersion is characterized in that the ratio R1 of the mean thickness (e) of the membrane (18) over the mean transverse dimension (Dc) of the active volume defined by the inner drop (16) and the membrane (18) is greater than 0.05 and is advantageously less than 0.5. Said dispersion is also characterized in that the ratio R2 of the partition coefficient of the active material (20), between the intermediate phase forming the membrane (18) and the internal phase forming the internal drop (16), over the viscosity of the membrane (18) is less than 1 s-1/Pa-1.