Method for producing phosgene

US12391557B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Torsten Mattke · Ludwigshafen am Rhein, DE
• Gerhard Olbert · Dossenheim, DE
• Jochen Gauer · Ludwigshafen, DE
• Kai Thiele · Ekeren, BE
• Koenraad VANDEWALLE · Oostmalle, BE
• Jens FERBITZ · Osnabrück, DE
• Peter Van Den Abeel · Brasschaat, BE

Key dates

• Filing date: Apr 14, 2020
• Grant date: Aug 19, 2025
• Expiry date: Jun 21, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25B1/46
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing phosgene by reacting chlorine with carbon monoxide over an activated carbon catalyst, wherein the content of chlorine oxides in the chlorine feed stream is low, to an apparatus for preparation of phosgene and to the use of the phosgene prepared by the process of the invention.