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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.:

US 12767543 B1

PDFFull Text
Date of Patent:
Oct. 20, 2026

Filed:

Dec. 13, 2021

Phosgene synthesis by conversion of a gas mixture containing chlorine and carbon monoxide on an organic catalyst containing chloride anions

Applicant:

Covestro Deutschland Ag, Leverkusen, DE;

Inventors:

Sivathmeehan Yogendra, Düsseldorf, DE;

Sebastian Hasenstab-Riedel, Berlin, DE;

Patrick Vossnacker, Berlin, DE;

Rainer Weber, Odenthal, DE;

Yuliya Schiesser, Troisdorf, DE;

Simon Steinhauer, Berlin, DE;

Thomas Keilhack, Berlin, DE;

Assignee:

Covestro Deutschland AG, Leverkusen, DE;

Attorney:

Donald R. Palladino

Primary Examiner:

Deborah D Carr

Int. Cl.
CPC ...
C01B 32/80 (2017.01);
U.S. Cl.
CPC ...
C01B 32/80 (2017.08);
Abstract

The invention relates to a method for producing phosgene, comprising at least the steps of: a) bringing a gas mixture containing carbon monoxide and chlorine into contact with a catalyst, the catalyst containing at least one ionic organic compound which contains monochloride anions and, on contact with chlorine, forms an ionic organic compound containing polychloride anions; b) converting the gas mixture into phosgene on the catalyst. With the invention, phosgene can be produced using less activation energy and in high yields without the use of conventional activated carbon catalysts.

Find Patent Forward Citations

Yogendra, Sivathmeehan. (2026). Phosgene synthesis by conversion of a gas mixture containing chlorine and carbon monoxide on an organic catalyst containing chloride anions (U.S. Patent No. 12767543). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12767543

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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