Patent · US Active

Process for preparing isocyanates by phosgenation of amines in the liquid phase

US9126904B2 · kind B2 · utility

0Cited by

2References

8Claims

0Family size

Assignee

BASF SE

Inventors

Torsten Mattke · Ludwigshafen am Rhein, DE
Markus Hiller · Frankenthal (Pfalz), DE
Hans-Juergen Pallasch · Ludwigshafen, DE

Key dates

Filing date	Oct 21, 2013
Grant date	Sep 8, 2015
Priority date	—
Expiry date	Dec 5, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C263/10
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for preparing isocyanates by reacting amines with phosgene in the liquid phase, where phosgene, hydrogen chloride and isocyanates are separated with stripping columns operated at different pressures.

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