METHOD AND APPARATUS FOR PREPARATION OF LACTIDE USING LACTIDE PURIFICATION PROCESS

USPTO Patent Application US 2017/0101390 A1
Application Date: Apr. 13rd, 2017

ABSTRACT

The present invention relates to a method and apparatus for preparation of lactide using a lactide purification process, comprising introducing an aqueous solution comprising lactic acid into a reactor filled...
Application Number:
15/290,647
International Classification:
C07D 319/12 (20060101); B01D 3/00 (20060101); B01D 39/00 (20060101); B01J 8/02 (20060101); B01D 9/00 (20060101)
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CLAIMS

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)...

DESCRIPTION

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.
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