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:
Oct. 11, 2011
Filed:
Sep. 07, 2009
Rainer Karer, Kaiserslautern, DE;
Kaspar Evertz, Schifferstadt, DE;
Wolfgang Micklitz, Neustadt, DE;
Hans-jacob Feindt, Raritan Township, NJ (US);
Philipp Rosendorfer, Neustadt, DE;
Peter Kölle, Bad Dürkheim, DE;
Rainer Karer, Kaiserslautern, DE;
Kaspar Evertz, Schifferstadt, DE;
Wolfgang Micklitz, Neustadt, DE;
Hans-Jacob Feindt, Raritan Township, NJ (US);
Philipp Rosendorfer, Neustadt, DE;
Peter Kölle, Bad Dürkheim, DE;
Other;
Abstract
Gas-phase fluidized-bed reactor for polymerizing ethylenically unsaturated monomers, comprising a reactor chamber () in the form of a vertical tube, if desired a calming zone () following the upper section of the reactor chamber, a circulation gas line (), a circulation gas compressor () and a cooling device (), where, in the region of transition of the reaction gas from the circulation gas line into the reactor chamber and in the lower section of the reactor chamber itself, there is either no gas distributor plate at all or only a gas distributor plate the total surface area of whose gas orifices is more than 20% of the total surface area of said gas distributor plate.