The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 14, 2013
Filed:
Sep. 27, 2010
Reinhold Klipper, Köln, DE;
Stefan Neumann, Leverkusen, DE;
Jens Stoll, Leverkusen, DE;
Michael Schelhaas, Köln, DE;
Pierre Vanhoorne, Monheim, DE;
Reinhold Klipper, Köln, DE;
Stefan Neumann, Leverkusen, DE;
Jens Stoll, Leverkusen, DE;
Michael Schelhaas, Köln, DE;
Pierre Vanhoorne, Monheim, DE;
LANXESS Deutschland GmbH, Leverkusen, DE;
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 aminomethylphosphonic acid groups and iminodimethylphosphonic acid groups having high dynamic absorption capacity for cations at a low residual content of the cations and high regeneration efficiency, and a markedly lengthened loading duration of the chelating resin, to the chelating exchangers themselves, and also to uses thereof.