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:
Jun. 11, 2013
Filed:
Mar. 19, 2008
Gunther Windecker, Ludwigshafen, DE;
Gerd Kaibel, Lampertheim, DE;
Michael Steiniger, Neustadt, DE;
Thilo Buntrock, Mutterstadt, DE;
Jens Weiguny, Freinsheim, DE;
Dany Vanden Hautte, Bernissart, BE;
Thierry Lurquin, Feluy, BE;
Gunther Windecker, Ludwigshafen, DE;
Gerd Kaibel, Lampertheim, DE;
Michael Steiniger, Neustadt, DE;
Thilo Buntrock, Mutterstadt, DE;
Jens Weiguny, Freinsheim, DE;
Dany Vanden Hautte, Bernissart, BE;
Thierry Lurquin, Feluy, BE;
BASF SE, , DE;
Abstract
What is described is a process for obtaining maleic anhydride by distillation from a solution of maleic anhydride in a high-boiling absorbent which has been obtained by gas phase oxidation of a hydrocarbon and at least partial absorption of the oxidation products into the absorbent, by The maleic anhydride obtained as a side draw has a low content of acrylic acid and acetic acid.