Process for preparing isocyanates

US8212069B2 · kind B2 · utility

Inventors

• Ralf Boehling · Lorsch, DE
• Sven Kueber · Kallstadt, DE
• Stefan Maixner · Schwetzingen, DE
• Eckhard Stroefer · Mannheim, DE
• Jochem Henkelmann · Mannheim, DE
• Georg Krug · Bad Kissingen, DE
• Werner Bolz · Ludwigshafen, DE

Key dates

• Filing date: Oct 18, 2007
• Grant date: Jul 3, 2012
• Expiry date: Oct 21, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for preparing isocyanates by phosgenation of amines, wherein phosgene and amine are brought into contact in at least 2 mixing chambers connected in parallel.