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:
Feb. 05, 2019
Filed:
Feb. 12, 2016
Basf SE, Ludwigshafen, DE;
Dow Global Technologies Llc, Midland, MI (US);
Dominic Riedel, Lampertheim, DE;
Joaquim Henrique Teles, Waldsee, DE;
Daniel Urbanczyk, Griesheim, DE;
Ulrike Wegerle, Worms, DE;
Luise Spiske, Seeheim-Jugenheim, DE;
Andrei-Nicolae Parvulescu, Ruppertsberg, DE;
Alexander Schroeder, Wattenheim, DE;
Ulrich Mueller, Neustadt, DE;
Meinolf Weidenbach, Stade, DE;
Werner J. Witzl, Stade, DE;
BASF SE, Ludwigshafen, DE;
Dow Global Technologies LLC, Midland, MI (US);
Abstract
The invention relates to process for the regeneration of a catalyst comprising a titanium containing zeolite as catalytically active material comprising a stage comprising introducing a feed stream comprising propene, hydrogen peroxide or a hydrogen peroxide source, and an organic solvent into a reactor containing a catalyst comprising the titanium containing zeolite, subjecting the feed stream in the reactor to epoxidation conditions in the presence of the catalyst, removing a product steam comprising propylene oxide and the organic solvent from the reactor, stopping introducing the feed stream, washing the catalyst with a liquid aqueous system and calcining the washed catalyst.