Crosslinked, interpolymer fixed-charge membranes

Details Crosslinked, interpolymer fixed-charge membranes Crosslinked, interpolymer fixed-charge membranes

1974-01-15

1977-03-15

Spear, Jr., Frank A.

Liquid purification or separation

Filter

Material

210 23F, 210 23H, B01D 3100, B01D 1300

Patent

active

040123243

ABSTRACT:
Interpolymer fixed-charge membranes of macroscopic homogeneity are prepared by providing a solution containing a matrix polymer, a polyelectrolyte and a crosslinking agent, evaporating the solvent until substantially the desired pore size and other physical properties are obtained in a film cast from the solution, the thereafter chemically crosslinking the film to insolubilize the membrane.

REFERENCES:
patent: 3004904 (1961-10-01), Gregor et al.
patent: 3132094 (1964-05-01), McKelvey, Jr.
patent: 3297545 (1967-01-01), Mindick et al.
patent: 3451951 (1969-06-01), Mizutani et al.
patent: 3647086 (1972-03-01), Mizutani et al.
patent: 3737045 (1973-06-01), Hashimoto et al.

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