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:
Sep. 18, 2012
Filed:
Dec. 21, 2006
Jochen Praefke, Oer-Erkenschwick, DE;
Armin Rix, Marl, DE;
Silvia Santiago Fernandez, Oviedo, ES;
Matthias Groemping, Kenner, LA (US);
Frank Hoeper, Haltern am See, DE;
Udo Peters, Marl, DE;
Joerg Leistner, Haltern am See, DE;
Franz Nierlich, Marl, DE;
Dirk Roettger, Recklinghausen, DE;
Jochen Praefke, Oer-Erkenschwick, DE;
Armin Rix, Marl, DE;
Silvia Santiago Fernandez, Oviedo, ES;
Matthias Groemping, Kenner, LA (US);
Frank Hoeper, Haltern am See, DE;
Udo Peters, Marl, DE;
Joerg Leistner, Haltern am See, DE;
Franz Nierlich, Marl, DE;
Dirk Roettger, Recklinghausen, DE;
Evonik Oxeno GmbH, Marl, DE;
Abstract
The invention relates to a process for preparing ETBE from technical mixtures which comprise at least 1-butene, isobutene, n-butane and 2-butenes, by reacting the isobutene present, distillatively removing a fraction comprising 1-butene and isobutene and again reacting the isobutene present therein to give ETBE.