Quaternization process for ion exchange membranes

Details Quaternization process for ion exchange membranes Quaternization process for ion exchange membranes

1980-09-22

1982-03-30

Hamrock, William F.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

521 27, B01J 4112, C08F 832

Patent

active

043225012

ABSTRACT:
A process is disclosed for quaternizing reactive substituent haloalkyl groups in hollow fiber polymer membranes wherein such haloalkyl groups are reacted with an amine quaternizing agent in the presence of an electrolyte compound and, preferably, in the presence of a cationic quaternary ammonium halide surfactant. In addition, there is disclosed a process of quaternizing the reactive haloalkyl groups in anisotropic hollow fiber polymer membranes by contacting and permeating a solution of an amine quaternizing agent from the surface of the membrane which is to be exposed to a dialysis feed solution.

REFERENCES:
patent: 3133889 (1964-05-01), Hazenberg et al.
patent: 3821127 (1974-06-01), Mizutani et al.
patent: 3847840 (1974-11-01), Kanig
patent: 3945927 (1976-03-01), Imai et al.
patent: 3947351 (1976-03-01), Asawa et al.
patent: 4014798 (1977-03-01), Rembaum

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