05859263 is referenced by 38 patents and cites 7 patents.

The present invention relates to a continuous process for preparing levulinic acid from starch in a reactive extrusion process. In a preferred embodiment, the extrusion takes place in a twin-screw extruder having a plurality of temperature zones wherein the starch slurry is preconditioned, extruded, filter pressed, reboiled, vacuum distilled, condensed, centrifuged, whereby the waste effluent from the centrifugation is reprocessed upstream to the preconditioning stage.

Title
Method and apparatus for production of levulinic acid via reactive extrusion
Application Number
8/696764
Publication Number
5859263
Application Date
August 14, 1996
Publication Date
January 12, 1999
Inventor
Milford A Hanna
Lincoln
NE, US
Viswas M Ghorpade
Lincoln
NE, US
Agent
Suiter & Associates P C
Assignee
Board of Regents University of Nebraska Lincoln
NE, US
IPC
C07C 51/00
C07C 31/18
C07D 307/26
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