The present invention is directed to microdispersions and pharmaceutical compositions
containing a synthetic, bioabsorbable, biocompatible liquid polymer that is the
reaction product of a polybasic acid or derivative thereof, a polyol and a fatty
acid, the liquid polymer having a melting point less than about 40 C., as
determined by differential scanning calorimetry, and a synthetic, bioabsorbable,
biocompatible polymeric wax comprising the reaction product of a polybasic acid
or derivative thereof, a fatty acid and a polyol, the polymeric wax having a melting
point less than about 70 C., as determined by differential scanning calorimetry.