METHOD AND DEVICE FOR MANUFACTURING LACTIDE

USPTO Patent Application US 2018/0155313 A1
Application Date: Jun. 7th, 2018

ABSTRACT

A method and a device for manufacturing lactide, whereby crude lactide, being prepared by means of depolymerization of lactic acid oligomers, is purified by means of a distillation step. The...
Assignee(s):
Application Number:
15/570,244
International Classification:
C07D 319/12 (20060101); B01D 3/34 (20060101); B01D 3/42 (20060101); B01J 19/00 (20060101)
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CLAIMS

What is claimed is:

1. Method for manufacturing lactide, whereby crude lactide, being prepared by means of depolymerization of lactic acid oligomers, is purified by means of a distillation step, wherein, prior to the distillation step, the prepared crude lactide is maintained for a period of at least 5 hours in a reaction vessel...

DESCRIPTION

The invention relates to a method for manufacturing lactide, wherein crude lactide, being prepared by means of depolymerization of lactic acid oligomers, is purified by means of a distillation step. The invention also relates to a device for manufacturing lactide comprising a lactide reactor for depolymerization of lactic acid oligomers...
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