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. 09, 2020
Filed:
Jul. 19, 2017
Basf SE, Ludwigshafen am Rhein, DE;
Dow Global Technologies Llc, Midland, MI (US);
Joaquim Henrique Teles, Ludwigshafen, DE;
Marvin Kramp, Ludwigshafen, DE;
Christian Mueller, Ludwigshafen, DE;
Nicolai Tonio Woerz, Ludwigshafen, DE;
Bernd Metzen, Ludwigshafen, DE;
Tobias Keller, Ludwigshafen, DE;
Dominic Riedel, Ludwigshafen, DE;
Heiner Schelling, Ludwigshafen, DE;
Markus Weber, Ludwigshafen, DE;
Daniel Urbanczyk, Ludwigshafen, DE;
Andrei-Nicolae Parvulescu, Ludwigshafen, DE;
Ulrike Wegerle, Worms, DE;
Ulrich Mueller, Ludwigshafen, DE;
Meinolf Weidenbach, Stade, DE;
Werner J. Witzl, Stade, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Dow Global Technologies LLC, Midland, MI (US);
Abstract
Disclosed is a process for purifying propylene oxide. A stream Scontaining propylene oxide, acetonitrile, water, and an organic compound containing one or more of acetone and propionaldehyde is provided. Propylene oxide is separated from Sby subjecting Sto distillation in a first distillation unit, obtaining a gaseous top stream Senriched in propylene oxide, a liquid bottom stream Senriched in acetonitrile and water, and a side stream Scontaining propylene oxide and enriched in the carbonyl compound; reacting the carbonyl compound in Swith an organic compound containing an amino group to obtain a reaction product; separating propylene oxide from the reaction product in a second distillation unit, obtaining a gaseous top stream Senriched in propylene oxide and a liquid bottoms stream Senriched in the reaction product; and introducing stream Sinto the first distillation unit.