Polymeric microfibrous filter sheet, preparation and use

Details Polymeric microfibrous filter sheet, preparation and use Polymeric microfibrous filter sheet, preparation and use

1982-07-13

1986-10-14

Spear, Frank

Liquid purification or separation

Processes

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

210508, B01D 1300

Patent

active

046171240

ABSTRACT:
Microfibrous, polymeric filter sheets and filter elements prepared therefrom comprised of a normally hydrophobic, microfibrous, polymeric web, wherein the surfaces of the microfibers making up the web are coated with a cured, precipitated, cationic, thermosetting binder resin or polymer. The filter sheet is further characterized by being hydrophilic and having a positive zeta potential.
The process for preparing such filter sheets comprises four steps:

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