US8895760: Process for the preparation of l-lactide of high chemical yield and optical purity

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A process for the synthesis of 100% optically pure L(+)-lactide catalyzed by zinc and tin metal catalysts of less than 150 micron particle size is disclosed. The L-lactide obtained was further purified to obtain lactide of 100% optical purity and acid impurities less than 10 meq/kg.

Patent No:: US8895760
Application No:: 13/595627
Filing Date:: 27-08-2012
Issue Date:: 25-11-2014
Applicant:: CSIR-National Chemical Laboratory (CSIR-NCL), Pune
Inventor(s):: Bhaskar Bhairavnath Idage; Sivaram Swaminathan
IPC Classification:: C07D 319/00
Country:: United States of America

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