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:
Nov. 29, 2022
Filed:
Apr. 04, 2018
Basf SE, Ludwigshafen am Rhein, DE;
Sven Titlbach, Heidelberg, DE;
Andreas Kuschel, Heidelberg, DE;
Carlos Lizandara, Ludwigshafen, DE;
Stephan A Schunk, Heidelberg, DE;
Joerg Rother, Heidelberg, DE;
Juergen Bechtel, Heidelberg, DE;
Nedko Stefanov Drebov, Ludwigshafen, DE;
Stefan Maixner, Ludwigshafen, DE;
Matthias Hinrichs, Ludwigshafen, DE;
Mohamed Halabi, Ludwigshafen, DE;
Imke Britta Mueller, Ludwigshafen, DE;
Michaela Fenyn, Ludwigshafen, DE;
Abstract
A process for preparing an aromatic isocyanate by direct carbonylation of a nitro aromatic compound by reacting the nitro aromatic compound with carbon monoxide in the presence of a catalyst, characterized in that the catalyst contains a multi metallic material comprising one or more binary intermetallic phases of the general formula ABwherein: A is one or more element selected from Ni, Ru, Rh, Pd, Ir, Pt and Ag, B is one or more element selected from Sn, Sb, Pb, Zn, Ga, In, Ge and As, x is in the range 0.1-10, y in is in the range 0.1-10.