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

1987-07-10

1989-07-18

Spear, Frank

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

210638, 21050042, 427245, B01D 1300

Patent

active

048491063

ABSTRACT:
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: 3910819 (1975-10-01), Rembaum et al.
patent: 4012324 (1977-03-01), Gregor
patent: 4125462 (1978-11-01), Latty
patent: 4199445 (1980-04-01), Chang et al.
patent: 4250029 (1981-02-01), Kuer et al.
patent: 4544076 (1985-11-01), Speaker
Channabasappa, "Method for New and Better Membranes", from Water & Sewage Work, 4-1976, pp. 153-158, 210-500.2.
Gregor et al., "Synthetic Membrane Technology", from Scientific American, 7-78, pp. 112-128, 210-500.2.

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