Patent · US Expired

Process for preparing (cyclo)aliphatic isocyanates

US6706913B2 · kind B2 · utility

10Cited by

2References

3Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Hans-Joachim Leimkühler · Leverkusen, DE
Herbert Stutz · Karlsruhe, DE
Helmut Schmidt · Riegelsberg, DE

Key dates

Filing date	Jul 3, 2002
Grant date	Mar 16, 2004
Priority date	—
Expiry date	Jul 3, 2022

Classification

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

Abstract

The present invention relates to a novel process for preparing (cyclo)aliphatic diisocyanates and triisocyanates by phosgenation of (cyclo)aliphatic diamines and triamines in the gas phase by accelerating the flow of at least one of reactants in the region where the reactants are mixed.

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