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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10308582 B1

PDFFull Text
Date of Patent:
Jun. 04, 2019

Filed:

Nov. 23, 2015

Process for making acrylic acid from dextrose

Applicant:

Archer Daniels Midland Company, Decatur, IL (US);

Inventors:

Thomas Binder, Marion, IA (US);

Ahmad K. Hilaly, Forsyth, IL (US);

Naveen S. Sudharsan, Malden, MA (US);

Kris N. Mani, Basking Ridge, NJ (US);

Mitchell Schultz, Decatur, IL (US);

Assignee:

Archer Daniels Midland Company, Decatur, IL (US);

Attorney:

William B. Miller

Primary Examiner:

Robert J Yamasaki

Assistant Examiner:

Charles Zoltan Constantine

Int. Cl.
CPC ...
C07C 51/377 (2006.01); C07C 51/02 (2006.01); C07C 51/43 (2006.01); C07C 51/42 (2006.01); C07C 51/44 (2006.01); C07C 51/47 (2006.01); C07C 51/48 (2006.01); C07C 57/04 (2006.01); C07C 57/065 (2006.01); C12P 7/56 (2006.01); B01D 3/14 (2006.01); B01D 3/02 (2006.01); B01D 11/04 (2006.01); B01D 61/14 (2006.01); B01J 43/00 (2006.01); C12P 7/40 (2006.01); B01D 15/18 (2006.01); B01D 15/36 (2006.01); B01D 61/02 (2006.01); C07C 51/41 (2006.01);
U.S. Cl.
CPC ...
C07C 51/377 (2013.01); B01D 3/02 (2013.01); B01D 3/145 (2013.01); B01D 11/04 (2013.01); B01D 15/1821 (2013.01); B01D 15/364 (2013.01); B01D 61/027 (2013.01); B01J 43/00 (2013.01); C07C 51/02 (2013.01); C07C 51/412 (2013.01); C07C 51/43 (2013.01); C07C 51/44 (2013.01); C07C 51/47 (2013.01); C07C 57/04 (2013.01); C12P 7/40 (2013.01); C12P 7/56 (2013.01); C12Y 101/01027 (2013.01); B01D 2325/36 (2013.01);
Abstract

A process is described for making acrylic acid from dextrose, which comprises fermenting dextrose; removing solids from the resulting fermentation broth; removing lactic acid from the clarified broth by extraction into an organic solvent; separating out the lactic acid-loaded organic solvent while recycling at least a portion of the remainder back to the fermentation step; reacting the lactic acid with ammonia to provide a dehydration feed comprising ammonium lactate while preferably recycling the organic solvent; carrying out a vapor phase dehydration of the ammonium lactate to produce a crude acrylic acid product; and purifying the crude acrylic acid by distillation followed by melt crystallization, chromatography or both melt crystallization and chromatography.

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