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:
Jul. 29, 2014
Filed:
Nov. 28, 2012
Torsten Mattke, Freinsheim, DE;
Carsten Knöesche, Niederkirchen, DE;
Vanessa Simone Lehr, Mannheim, DE;
Torsten Mattke, Freinsheim, DE;
Carsten Knöesche, Niederkirchen, DE;
Vanessa Simone Lehr, Mannheim, DE;
BASF SE, Ludwigshafen, DE;
Abstract
A process for preparing isocyanates by phosgenation of the corresponding amines in a fluidized-bed reactor (R), wherein a gas stream () comprising the phosgene is used as fluidizing gas and keeps an inert solid in suspension and a liquid stream () comprising the amine is fed into the fluidized bed, with the amine vaporizing partially or completely and reacting with the phosgene to give a reaction gas mixture which comprises the corresponding isocyanate and is taken off from the fluidized-bed reactor (R) is proposed.