Patent · US Expired

Method of removing transition metals

US7183374B2 · kind B2 · utility

18Cited by

1References

23Claims

0Family size

Assignee

Boehringer Ingelheim International GmbH · DE

Inventors

Michael Brenner · Dallas, US
Siegfried Meineck · Ober-Hilbersheim, DE
Thomas Wirth · Freinsheim, DE

Key dates

Filing date	Nov 18, 2004
Grant date	Feb 27, 2007
Priority date	—
Expiry date	Aug 12, 2025

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07K5/123
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for diminishing the concentration of a metal complex from a solution containing said complex by the addition of an optionally fused and/or optionally substituted heterocyclic compound. The added compound is a solubility-enhancing compound that enhances the solubility of said complex in a second solution. Thereafter the solution containing said complex can be extracted with the second solution.

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