Patent · US Expired

Multistage continuous preparation of cycloaliphatic diisocyanates

US7329776B2 · kind B2 · utility

2Cited by

22References

119Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Stephan Kohlstruk · Marl, DE
Manfred Kreczinski · Herne, DE
Rainer Elm · Marl, DE
Hans-Werner Michalczak · Herne, DE

Key dates

Filing date	Aug 20, 2004
Grant date	Feb 12, 2008
Priority date	—
Expiry date	Dec 15, 2025

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2601/14
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A multistage process for continuous and phosgene-free preparation of cycloaliphatic diisocyanates.

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