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. 08, 2017
Filed:
Jul. 16, 2014
Basf SE, Ludwigshafen, DE;
Dow Global Technologies Llc, Midland, MI (US);
Joaquim Henrique Teles, Waldsee, DE;
Bianca Seelig, Cologne, DE;
Dominic Riedel, Lampertheim, DE;
Philip Kampe, Singapore, SG;
Daniel Urbanczyk, Griesheim, DE;
Markus Weber, Limburgerhof, DE;
Ulrich Mueller, Newstadt, DE;
Andrei-Nicolae Parvulescu, Ruppertsberg, DE;
Kai Gumlich, Cologne, DE;
Peter Bassler, Viemheim, DE;
Christian Bartosch, Mannheim, DE;
Richard Jacubinas, Bloomfield, NJ (US);
Meinolf Weidenbach, Stade, DE;
Werner Witzl, 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 of a phosphorus oxyacid wherein the molar ratio of potassium relative to phosphorus in the at least one potassium salt of a phosphorus oxyacid is in the range of from 0.6 to 1.4; (ii) passing the liquid feed stream provided in (i) into an epoxidation reactor comprising a catalyst comprising a titanium zeolite of structure type MWW comprising zinc, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation reactor, obtaining a reaction mixture comprising propylene oxide, acetonitrile, water, the at least one dissolved potassium salt of a phosphorus oxyacid, optionally propene, and optionally propane; (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 dissolved potassium salt of a phosphorus oxyacid, optionally propene, and optionally propane.