Acetylated lactide oligomer-based plasticizer, method of preparing same and PLA resin composition containing same
AssigneeKorea Research Institute of Chemical Technology
InventorsJihoon Shin, Haemin Jeong, Nam-Kyun Kim, Young-Wun Kim
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Abstract
Disclosed herein is an acetylated lactide oligomer-based plasticizer and a method of preparing the same having improved thermal stability, enhanced plasticity and excellent compatibility with a resin, the method, including: (a) synthesizing a lactide oligomer through ring-opening polymerization (ROP) of an initiator and lactide; (b) putting acetic anhydride into the lactide oligomer and performing acetylation; and (c) removing acetic acid generated in step (b) and unreacted acetic anhydride.
Claims11
A method of preparing an acetylated lactide oligomer- based plasticizer, comprising:
- (a) synthesizing a lactide oligomer through ring-opening polymerization (ROP) of an initiator and lactide, wherein the initiator is 1,1,1-tris(hydroxymethyl)propane or diethylene glycol;
- (b) putting acetic anhydride into the lactide oligomer and performing acetylation;
- and
- (c) removing acetic acid generated in step (b) and unreacted acetic anhydride.
An acetylated lactide oligomer-based plasticizer, which is manufactured by acetylating a lactide oligomer synthesized through ring-opening polymerization (ROP) of an initiator and lactide, is expressed as any one of following chemical formulas 2 to 3:
A poly lactic acid (PLA) resin composition, comprising:
- a poly lactic acid (PLA) resin and any one selected from acetylated lactide oligomer-based plasticizers expressed as following chemical formulas 2 to 3:
Dependencies are inferred from the claim text.