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. 25, 2018
Filed:
Oct. 15, 2013
Basf SE, Ludwingshafen, DE;
Steffen Tschirschwitz, Mannheim, DE;
Kathrin Wissel-Stoll, Ludwigshafen, DE;
Jochen Bürkle, Mannheim, DE;
Albena Kostova, Mannheim, DE;
Markus Schmitt, Heidelberg, DE;
Veronika Wloka, Mannheim, DE;
Stephan Deuerlein, Ludwigshafen, DE;
Marco Bosch, Lampertheim, DE;
Steffen Oehlenschläger, Bad Dürkheim, DE;
Michael Schreiber, Mannheim, DE;
Gauthier Luc Maurice Averlant, Frankfurt, DE;
Joni Joni, Sulzbach, DE;
Roman Prochazka, Mannheim, DE;
Martin Bock, Ludwigshafen, DE;
Alois Kindler, Grünstadt, DE;
Daniela Malkowsky, Speyer, DE;
Katharina Spuhl, Forest, BE;
Stefan Bitterlich, Dirmstein, DE;
Daniel Pfeiffer, Neustadt, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
The present invention relates to a process for preparing cyclohexane by isomerizing a hydrocarbon mixture (HM) comprising methylcyclopentane (MCP) in the presence of a catalyst. The catalyst is preferably an acidic ionic liquid. The starting material used is a stream (S) which originates from a steamcracking process. The hydrocarbon mixture (HM) obtained from this stream (S) in an apparatus for aromatics removal has a reduced aromatics content compared to stream (S), and (HM) may optionally also be (virtually) free of aromatics. Depending on the type and amount of the aromatics remaining in the hydrocarbon mixture (HM), especially in the case that benzene is present, the isomerization may additionally be preceded by performance of a hydrogenation of (HM). In addition, depending on the presence of other components of (HM), further purification steps may optionally be performed prior to or after the isomerization or hydrogenation. High-purity (on-spec) cyclohexane is preferably isolated from the hydrocarbon mixture (HM) obtained in the isomerization, the specifications being, for example, those applicable to the use of the cyclohexane for the preparation, known to those skilled in the art, of caprolactam.