Abstract: The invention discloses a synthesis method and device for rapidly producing lactide at high yield. The method comprises: adding a single component of lactic acid or two components of lactic acid and catalyst, passing the mixture through a mixer to enter an oligomer preparation system, increasing a residence time through bottom circulation, synthesizing oligomeric lactic acid, and passing a gas-phase component through a rectification system. With the adoption of the device, the lactide is capable of being efficiently synthesized, crude lactide with a yield of 94% to 98% is capable of being obtained.
Type:
Grant
Filed:
March 4, 2021
Date of Patent:
March 12, 2024
Assignees:
NANJING UNIVERSITY, NANJING QUANKAI RESEARCH INSTITUTE OF BIOMATERIALS CO., LTD.