Filtration membranes and method of making the same

Details Filtration membranes and method of making the same Filtration membranes and method of making the same

1987-05-20

1990-02-13

Spear, Frank

Liquid purification or separation

Processes

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

21050039, 21050044, 264 41, B01D 1300

Patent

active

049004492

ABSTRACT:
Microporous membranes can be prepared which comprise a polymer which is a hydrophobic polymer in bulk form and which has an equilibrium water absorption from about 2% to about 4%, but is hydrophilic when precipitated as a membrane. The membranes are further characterized by high water flow rates at any given bubble point.

REFERENCES:
patent: 3816303 (1974-06-01), Wrasidlo
patent: 4290987 (1981-09-01), Soehngen et al.
patent: 4451424 (1984-05-01), Tweddle et al.
patent: 4720343 (1988-01-01), Walch et al.
patent: 4772391 (1988-09-01), Baker et al.

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