Novel anion-exchange membrane

Details Novel anion-exchange membrane Novel anion-exchange membrane

1989-01-30

1990-05-08

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

21050042, B01D 1300

Patent

active

049236113

ABSTRACT:
Disclosed is an anion-exchange membrane prepared by subjecting a membrane composed of a resin containing a high-molecular-eight compound having haloalkyl groups chemically bound thereto to ultraviolet radiation or ionizing radiation to thereby decrease the amount of the haloalkyl groups present in its surface portion less than 0.1 micrometer deep from its surface by 10 to 95% from that of the haloalkyl groups present in the interior of the membrane, and the converting the haloalkyl groups present in the membrane into anion-exchange groups.

REFERENCES:
patent: 4605685 (1986-08-01), Momose et al.

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