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:
Mar. 25, 2014
Filed:
Nov. 19, 2012
Sven Crone, Limburgerhof, DE;
Oliver Ryll, Edenkoben, DE;
Till Blum, Singapore, SG;
Alexander Weck, Freinsheim, DE;
Rainer Papp, Speyer, DE;
Roland Krokoszinski, Weisenheim a.Berg, DE;
Heinrich-josef Blankertz, Forst, DE;
Sven Crone, Limburgerhof, DE;
Oliver Ryll, Edenkoben, DE;
Till Blum, Singapore, SG;
Alexander Weck, Freinsheim, DE;
Rainer Papp, Speyer, DE;
Roland Krokoszinski, Weisenheim a.Berg, DE;
Heinrich-Josef Blankertz, Forst, DE;
BASF SE, Ludwigshafen, DE;
Abstract
A process for preparing oligomers by continuous oligomerization of butenes is described, wherein a) a feed stream 1) comprising 1-butene and 2-butene in a total concentration of from 10 to 70% by weight and from 10 to 60% by weight of isobutane is reacted until more than 60% by weight of the 1-butene comprised in the feed stream 1 but less than 50% by weight of the 2-butene comprised in feed stream 1 have been converted into oligomers. b) The oligomers obtained in a) are separated off and optionally passed to a further work-up and the remaining residual stream is fed to work-up by distillation. c) Isobutane is separated off by distillation from the residual stream, and d) the isobutane-depleted stream obtained after the work-up by distillation c) is reacted to form oligomers.