Patent · US Expired

Chelate exchanger

US7462286B2 · kind B2 · utility

1Cited by

9References

17Claims

0Family size

Assignee

LANXESS Deutschland GmbH · DE

Inventors

Reinhold Klipper · Neunburg vorm Wald, DE
Bruno Hees · Langenfeld, DE
Olaf Halle
Wolfgang Podszun · Neunburg vorm Wald, DE
Pierre Vanhoorne · Monheim, DE
Hubertus Mittag · Wolfen, DE
Wolfgang Zarges · Neunburg vorm Wald, DE

Key dates

Filing date	Nov 6, 2004
Grant date	Dec 9, 2008
Priority date	—
Expiry date	Oct 17, 2025

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J45/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to novel ion exchangers comprising carboxyl groups and also —(CH2)mNR1R2 groups having improved exchange kinetics and selectivity, a method for their production and also use thereof for the adsorption of metals, in particular arsenic, when these are additionally loaded with iron oxide/iron oxyhydroxide.

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