Particulate filter medium and process

Details Particulate filter medium and process Particulate filter medium and process

1975-07-22

1977-02-08

Spear, Jr., Frank A.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210504, 210505, B01D 1300

Patent

active

040071138

ABSTRACT:
Improved filter media comprised of negatively charged high surface area particulate filter material the surface of which is modified with a melamine-formaldehyde cationic colloid; processes for the preparation thereof; and use in liquid filtration to remove submicron contaminants including negatively charged particles.

REFERENCES:
patent: 3158532 (1964-11-01), Pall et al.
patent: 3238056 (1966-03-01), Pall et al.

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