Positive-charged ultrafiltration membrane for the separation of

Details Positive-charged ultrafiltration membrane for the separation of Positive-charged ultrafiltration membrane for the separation of

1981-09-21

1983-11-01

Spear, Jr., Frank A.

Liquid purification or separation

Processes

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

210651, 2105002, B01D 1300

Patent

active

044129220

ABSTRACT:
A method for preparing a fouling-resistant polymer membrane for use in the separation of aqueous, cathodic, electrode-position-paint compositions, which method comprises treating a negative-charged polymer membrane material, having fixed negative-charged groups in the polymer, with a polyelectrolyte polymer having fixed positive-charged nitrogen groups in an amount sufficient to provide for an excess of positive-charged groups in the treated membrane polymer.

REFERENCES:
patent: 3462362 (1969-08-01), Kollsman
patent: 3663406 (1972-05-01), Bras et al.
patent: 3950247 (1976-04-01), Chiang et al.
patent: 4042496 (1977-08-01), Isushima et al.
patent: 4125462 (1978-11-01), Latty
Gregor et al., "Synthetic-Membrane Technology," 7/78, pp. 112-128, from Scientific American.

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