05247059 is referenced by 167 patents and cites 88 patents.

A process for the continuous production of substantially purified lactide and lactide polymers from an ester of lactic acid including the steps of forming crude lactide in the presence of a catalyst means to form a condensation reaction by-product and polylactic acid and depolymerizing the polylactic acid molecules followed by subsequent purification of the crude lactide in a distillation system. A purified lactide is then polymerized.

Title
Continuous process for the manufacture of a purified lactide from esters of lactic acid
Application Number
825059
Publication Number
5247059
Application Date
August 24, 1992
Publication Date
September 21, 1993
Inventor
Ronald L Borchardt
Eden Prairie
MN, US
Richard D Benson
Long Lake
MN, US
Matthew L Iwen
Minneapolis
MN, US
Jeffrey J Kolstad
Wayzata
MN, US
Eric S Hall
Crystal
MN, US
Patrick R Gruber
St. Paul
MN, US
Agent
Merchant Gould Smith Edell Welter & Schmidt
Assignee
Cargill Incorporated
MN, US
IPC
C07D 319/12
C08G 63/08
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