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. 09, 2013
Filed:
Jan. 21, 2009
Applicant:
Olivier Simon, Jaux, FR;
Inventor:
Olivier Simon, Jaux, FR;
Assignee:
Clariant Speciality Fine Chemicals (France), Nanterre, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/44 (2006.01); C07C 59/153 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a process for separating glyoxylic acid starting from an aqueous reaction medium containing glyoxylic acid and hydrochloric acid, comprising a step of countercurrent steam stripping of the reaction medium in order to obtain, on the one hand, a gas phase containing the volatile hydrochloric acid and, on the other hand, a liquid phase containing the purified glyoxylic acid.