Process of making an improved filter media

Details Process of making an improved filter media Process of making an improved filter media

1979-09-10

1982-03-23

Spear, Jr., Frank A.

Coating processes

Foraminous product produced

Filter, sponge, or foam

427221, 210505, 210508, B01D 3702

Patent

active

043212883

ABSTRACT:
A method for preparing an improved filter medium of enhanced electrokinetic capture potential for contaminated liquids having suspended therein electro-negative particles of about 0.1 to 0.7 micron diameter. The method comprises forming a filter medium from a dispersion of negatively charged particulate material for filtration and a sufficient amount of fibers to form a matrix of self-bonding fibers. The surface of the particulate has been modified with a melamine formaldehyde cationic colloid.

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

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