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. 22, 2014
Filed:
Oct. 31, 2008
Adriaan Van Heiningen, Orono, ME (US);
Herbert Sixta, Lenzing, AT;
Byung-hwan Um, Boothwyn, PA (US);
Peter Van Walsum, Orono, ME (US);
Adriaan van Heiningen, Orono, ME (US);
Herbert Sixta, Lenzing, AT;
Byung-Hwan Um, Boothwyn, PA (US);
Peter van Walsum, Orono, ME (US);
University of Maine System Board of Trustees, Bangor, ME (US);
Abstract
In a process for recovering acetic acid from a wood extract, an aqueous wood extract is provided that contains acetic acid and dissolved hemicellulose containing uronic acid. A water insoluble solvent containing an extractant for the acetic acid is also provided. In a preferred embodiment, the solvent is undecane and the extractant is trioctylphosphine oxide. The wood extract is contacted with the solvent and extractant in order to extract the acetic acid from the wood extract. The acetic acid is then recovered from the solvent and extractant.