Patent · US Active

Process for separating an isocyanate prepared by phosgenation of a primary amine in the gas phase from the gaseous crude product of the phosgenation

US9932299B2 · kind B2 · utility

2Cited by

15References

14Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Friedhelm Steffens · Leverkusen, DE
Bastian Mahr · Bensberg, DE

Key dates

Filing date	Feb 5, 2014
Grant date	Apr 3, 2018
Priority date	—
Expiry date	Sep 30, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C253/00
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention relates to a process for separating an isocyanate prepared by reaction of a primary amine with an excess of phosgene in the gas phase from the gaseous crude product obtained in the reaction, wherein

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.