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:
Apr. 01, 2014
Filed:
Oct. 26, 2012
Basf SE, Ludwigshafen, DE;
Julia Leschinski, Ixelles, BE;
Torsten Mattke, Freinsheim, DE;
Gerrit Waters, Karlsruhe, DE;
Eckhard Stroefer, Mannheim, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The invention relates to a process for preparing isocyanates and/or polyisocyanates by reacting the corresponding amines with phosgene, optionally in the presence of an inert medium, in a reactor (), a first reactant stream comprising the amine being supplied to the reactor () in liquid form, and a second reactant stream comprising the phosgene being supplied to the reactor in gaseous form. The reactor is a centrifugal reactor () having a packing () which rotates about a central axis () in a housing (), the first reactant stream and the second reactant stream being supplied to the rotating packing () such that the reactant streams are mixed due to the centrifugal force in the rotating packing () and are transported outward, the mixing in the rotating packing () resulting in reaction of the phosgene with the amine to give the corresponding isocyanate or polyisocyanate.