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:
Jun. 14, 2011
Filed:
Jun. 30, 2006
Bernd Rumpf, Hockenheim, DE;
Ortmund Lang, Quirnbach, DE;
Andrea Haunert, Mannheim, DE;
Thomas Genger, Lambsheim, DE;
Anton Meier, Birkenheide, DE;
Bernd Rumpf, Hockenheim, DE;
Ortmund Lang, Quirnbach, DE;
Andrea Haunert, Mannheim, DE;
Thomas Genger, Lambsheim, DE;
Anton Meier, Birkenheide, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
Process for recovering cyclododecatriene (CDT) from a solution containing CDT and high boilers such as deactivated catalyst and polymers, which includes feeding the solution into a preheater and heating it, subsequently depressurizing it through a downstream pressure maintenance device and feeding the resulting two-phase mixture into a helical tube evaporator and there reducing the CDT content of the liquid phase by partial evaporation and discharging a gaseous product stream having an increased concentration of CDT.