Processes for making membranes

Details Processes for making membranes Processes for making membranes

1979-04-26

1981-12-08

Kendall, Ralph S.

Coating processes

Foraminous product produced

Microporous coating

427307, 427341, 521 27, C08J 702, C08J 522

Patent

active

043047998

ABSTRACT:
An improved process for modifying the properties of membranes, particularly ion exchange membranes, and novel membranes characterized by a unique combination of low gas permeability and low electrical resistivity. The process comprises the steps of modifying the morphology of a pre-membrane by subjecting it to a chemical reaction, advantageously with a reactive macromolecular solute in an organic solvent.

REFERENCES:
patent: 4054707 (1977-10-01), Quentin
patent: 4132682 (1979-01-01), Seita et al.
patent: 4136237 (1979-01-01), Takahashi et al.
patent: 4148979 (1979-04-01), Asami et al.
patent: 4154909 (1979-05-01), Seita
patent: 4157960 (1979-06-01), Chang et al.

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