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.:
Date of Patent:
Jul. 18, 2017
Filed:
Apr. 24, 2014
Applicant:
Georgia-pacific Llc, Atlanta, GA (US);
Inventor:
Pierre Louis Woestenborghs, Echt, NL;
Assignee:
Georgia-Pacific LLC, Atlanta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/47 (2006.01); C07C 51/48 (2006.01); C07C 39/06 (2006.01); C07C 39/07 (2006.01); C07C 39/08 (2006.01); C07C 43/295 (2006.01); C07C 51/44 (2006.01);
U.S. Cl.
CPC ...
C07C 51/47 (2013.01); C07C 39/06 (2013.01); C07C 39/07 (2013.01); C07C 39/08 (2013.01); C07C 43/295 (2013.01); C07C 51/44 (2013.01); C07C 51/48 (2013.01);
Abstract
The invention provides a process to separate levulinic acid from a biomass hydrolysate said process comprising extraction using as an organic solvent a substituted benzene comprising (i) at least one ORgroup wherein Ris H or CH; and (ii) at least one Calkyl group, wherein each of the at least one ORgroup is ortho positioned to at least one Calkyl group. Using said substituted benzene as extraction solvent gives good extraction efficiency, the extraction can advantageously be carried out at elevated temperature, and is very suitable for subsequent distillation steps.