The copolyester of poly(butylene adipate)-co-(dilinoleic adipate) (PBA-DLA) with 70-30 wt% hard to soft segment ratio was synthesized via two-stage polycondensation method in diphenyl ether using CAL-B as biocatalyst according to the protocol described in our previous paper, 40 however, herein acetone was used as a solvent at the end of the reaction to facilitate the filtration of CAL-B and the precipitation of the final product. The amounts of monomers and catalyst used for the reaction were equal to those employed in the bulk polycondensation method to ensure the most comparable and consistent conditions regarding the essential criteria of the step growth process. PBA-DLA synthesized in diphenyl ether is abbreviated as PBA-DLA_S.