Patent · US Active

Method for improved removal of cations by means of chelating resins

US8399528B2 · kind B2 · utility

2Cited by

8References

9Claims

0Family size

Assignee

LANXESS Deutschland GmbH · DE

Inventors

Reinhold Klipper · Neunburg vorm Wald, DE
Stefan Neumann · Berlin, DE
Jens Stoll · Leverkusen, DE
Michael Schelhaas
Pierre Vanhoorne · Monheim, DE

Key dates

Filing date	Sep 27, 2010
Grant date	Mar 19, 2013
Priority date	—
Expiry date	Jul 30, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F212/36
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a method for improved removal of cations, preferably alkaline earth metals, in particular calcium and barium, from aqueous solutions using chelating resins having acetic acid and/or iminodiacetic acid groups having high dynamic absorption capacity for cations at a low residual content of the cations and high regeneration efficiency, to the chelating exchangers themselves, and also to uses thereof.

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