Patent Number: 8,822,718

Title: Process for preparing isocyanates by thermally cleaving carbamates

Abstract: A process is proposed for preparing isocyanates by thermally cleaving carbamates to obtain a carbamate cleavage gas comprising the corresponding isocyanate and the corresponding alcohol, which comprises quenching the carbamate cleavage gas in the presence of an ether which functions as an inhibitor for the reverse reaction of the isocyanate with the alcohol.

Inventors: Bock; Michael (Ruppertsberg, DE), Stroefer; Eckhard (Mannheim, DE), Baumann; Robert (Mannheim, DE), Franzke; Axel (Mannheim, DE), Pfeffinger; Joachim (Ludwigshafen, DE)

Assignee: BASF SE

International Classification: C07C 263/04 (20060101)

Expiration Date: 9/02/12018