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. 27, 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, Mannheim, DE;
Philip Kampe, Singapore, SG;
Daniel Urbanczyk, Griesheim, DE;
Markus Weber, Limburgerhof, DE;
Ulrich Mueller, Neustadt, DE;
Andrei-Nicolae Parvulescu, Heidelberg, DE;
Alexander Schroeder, Wattenheim, DE;
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, dissolved potassium dihydrogen phosphate, and optionally propane; (ii) passing the liquid feed stream provided in (i) into an epoxidation reactor comprising a catalyst comprising a titanium zeolite of structure type MWW, and subjecting the liquid feed stream to epoxidation reaction conditions; (iii) removing an effluent stream from the epoxidation reactor; wherein the concentration of the dissolved potassium dihydrogen phosphate in the liquid feed stream is at least 10% of the solubility limit of the potassium dihydrogen phosphate in the liquid feed stream.