Liquid purification or separation – Processes – Ion exchange or selective sorption
Reexamination Certificate
2004-11-06
2008-12-09
Barry, Chester T (Department: 1797)
Liquid purification or separation
Processes
Ion exchange or selective sorption
C210S688000
Reexamination Certificate
active
07462286
ABSTRACT:
The present invention relates to novel ion exchangers comprising carboxyl groups and also —(CH2)mNR1R2groups 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.
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Halle Olaf
Hees Bruno
Klipper Reinhold
Mittag Hubertus
Podszun Wolfgang
Barry Chester T
Kohncke Nicanor A.
LANXESS Deutschland GmbH
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