Patent · US Expired

Process for the continuous preparation of monoisocyanates or polyisocyanates

US5117048A · kind A · utility

25Cited by

4References

20Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Gottfried Zaby · Leverkusen, DE
Helmut Judat · Langenfeld, DE
Eric F. Boonstra · Berkvam Road, US
Stefaan De Vos · Rayong, TH
Rolf-W. Eckermann · Bensberg, DE
Siegbert Humburger · Leverkusen, DE

Key dates

Filing date	Dec 14, 1988
Grant date	May 26, 1992
Priority date	—
Expiry date	Dec 14, 2008

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2219/00164
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention relates to a process for the continuous preparation of organic mono- or polyisocyanates by the reaction of the mono- or polyamines corresponding to the mono- or polyisocyanates with phosgene dissolved in an organic solvent. The phosgene solution and the amine component, optionally also in the form of a solution, are brought together inside a nozzle (1) by subjecting the stream of one component to a constriction (3) and supplying the other component into this constriction (3) from the side as partial streams through several apertures (5).

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