Gas-phase phosgenation process

US8692016B2 · kind B2 · utility

Assignee

• Bayer MaterialScience AG · DE

Inventors

• Josef Sanders · Leverkusen, DE
• Hanno Brummer · Baytown, US
• Jörg Laue · Olfen, DE
• Bernd Sojka · Cologne, DE
• Marcus Eichmann · Düsseldorf, DE
• Verena Haverkamp · Bensberg, DE

Key dates

• Filing date: Aug 12, 2010
• Grant date: Apr 8, 2014
• Expiry date: Dec 15, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C263/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the phosgenation of amines in the gas phase, in which a specific type of heat exchanger is used for vaporizing the amines.