Filter material and process for producing same

Details Filter material and process for producing same Filter material and process for producing same

1977-08-15

1979-04-10

Hart, Charles N.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Including surface treatment of porous body

521 63, 521 51, 521159, 264 467, 210500M, C08J 310, C08J 320, C08J 504, C08J 700

Patent

active

041487346

ABSTRACT:
This invention relates to filter material consisting substantially of a microporous and/or macroporous sheet structure obtained by coagulation of a polymer solution in which at least one surface area of the sheet structure is abraded more or less, depending on the desired pore size and a process for producing said filter materials.

REFERENCES:
patent: 2926389 (1960-03-01), Garlington
patent: 3164456 (1965-01-01), Brainerd et al.
patent: 3250398 (1966-05-01), Adiletta
patent: 3360131 (1967-12-01), Witkowski
patent: 3565982 (1971-02-01), Day
patent: 3681125 (1972-08-01), Traubel et al.
patent: 3772059 (1973-11-01), Shikada
patent: 3816233 (1974-06-01), Powers
patent: 3864444 (1975-02-01), Johnson
patent: 3920588 (1975-11-01), Traubel et al.
patent: 3959049 (1976-05-01), Tanaka et al.
patent: 3998794 (1976-12-01), Muller et al.
U.S. Office of Saline Water, Progress Report No. 274, Oct. 1967, R. F. Baddour et al., "Expanded Glassy Polymers-as R.O and Ion-Sel. Memb."

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