Method for treating water or an aqueous solution

Details Method for treating water or an aqueous solution Method for treating water or an aqueous solution

1995-03-01

1996-05-21

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210683, 210900, 210917, C02F 142

Patent

active

055186270

ABSTRACT:
A method for demineralizing water or an aqueous solution, which comprises contacting the water or the aqueous solution to be treated to a strongly basic anion exchanger made of a crosslinked polymer having a constituting unit of the following formula (I): ##STR1## wherein A is a C.sub.1-2 linear alkylene group, B is a C.sub.4-8 linear alkylene group, each of R1, R2 and R3 which may be the same or different, is a C.sub.1-4 alkyl group or a C.sub.2-4 alkanol group, X is a counter ion coordinated on the ammonium group, and the benzene ring D may have an alkyl group or a halogen atom as a substituent.

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patent: 4052343 (1977-10-01), Cunningham
patent: 4694044 (1987-09-01), Kiniwa
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patent: 4851382 (1989-07-01), Kusano et al.
patent: 5096971 (1992-03-01), Nishikaji et al.
patent: 5314974 (1994-05-01), Ito et al.
patent: 5350523 (1994-09-01), Tomoi et al.
patent: 5369132 (1994-11-01), Ito et al.

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