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:
Apr. 12, 2005
Filed:
May. 05, 2004
Thomas Haas, Frankfurt, DE;
Claudia Brasse, Hanau, DE;
Wolfgang Wöll, Maintal-Dörnigheim, DE;
Willi Hofen, Rodenbach, DE;
Bernd Jaeger, Darmstadt, DE;
Guido Stochniol, Haltern, DE;
Norbert Ullrich, Essen, DE;
Thomas Haas, Frankfurt, DE;
Claudia Brasse, Hanau, DE;
Wolfgang Wöll, Maintal-Dörnigheim, DE;
Willi Hofen, Rodenbach, DE;
Bernd Jaeger, Darmstadt, DE;
Guido Stochniol, Haltern, DE;
Norbert Ullrich, Essen, DE;
Degussa AG, Düsseldorf, DE;
Uhde GmbH, Dortmund, DE;
Abstract
A process for the continuous epoxidation of propene with hydrogen peroxide in the presence of a titanium silicalite catalyst and a methanol solvent, wherein the catalyst is periodically regenerated by washing with a methanol solvent at a temperature of at least 100° C. and the epoxidation reaction is carried out for periods of more than 300 h between two regeneration steps.