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:
Aug. 22, 2017
Filed:
Jul. 16, 2014
Basf SE, Ludwigshafen, DE;
Dow Global Technologies Llc, Midland, MI (US);
Dominic Riedel, Mannheim, DE;
Joaquim Henrique Teles, Waldsee, DE;
Ulrike Wegerle, Worms, DE;
Andrei-Nicolae Parvulescu, Heidelberg, DE;
Alexander Schroeder, Wattenheim, DE;
Luise Spiske, Seeheim-Jugenheim, DE;
Daniel Urbanczyk, Griesheim, DE;
Ulrich Mueller, Neustadt, DE;
Werner Witzl, Stade, DE;
Meinolf Weidenbach, Stade, DE;
BASF SE, Ludwigshafen, DE;
Dow Global Technologies LLC, Midland, MI (US);
Abstract
A continuous process for the preparation of propylene oxide, comprising (i) providing a liquid feed stream comprising propene, hydrogen peroxide, acetonitrile, water, optionally propane, and at least one dissolved potassium salt; (ii) passing the feed stream provided in (i) into an epoxidation reactor comprising a catalyst comprising a titanium zeolite of structure type MWW, and subjecting the feed stream to epoxidation reaction conditions in the epoxidation reactor, obtaining a reaction mixture comprising propylene oxide, acetonitrile, water, the at least one potassium salt, optionally propene, and optionally pane; (iii) removing an effluent stream from the epoxidation reactor, the effluent stream comprising propylene oxide, acetonitrile, water, at least a portion of the at least one potassium salt, optionally propene, and optionally propane.