What is claimed is:
1. A method for preparing lactide comprising:
(i) introducing an aqueous solution comprising lactic acid into a reactor filled with a catalyst and reacting the same to produce crude lactide vapor; and(ii) purifying the crude lactide vapor produced in the step (i) to produce lactide crystals, wherein the step (ii) comprises:(ii-a)...
CROSS-REFERENCE TO RELATED APPLICATIONS
This application claims the benefit of Korean Patent Application No. 10-2015-0142330, filed Oct. 12, 2015. The contents of the referenced application are incorporated herein by reference.