Hydrophilic PVDF semipermeable membrane

Details Hydrophilic PVDF semipermeable membrane Hydrophilic PVDF semipermeable membrane

1987-06-29

1989-03-07

Foelak, Morton

Liquid purification or separation

Filter

Material

2105003, 21050031, 21050041, 21050042, 521 62, C08J 926, B01D 3100

Patent

active

048103845

ABSTRACT:
Hydrophilic semipermeable membranes which retain their capacity for filtration, even after drying, and which are well adapted for either ultrafiltration or microfiltration, are comprised of at least 70% by weight of polyvinylidene fluoride (PVFD) and up to 30% by weight of a hydrophilic polymer compatible therewith, e.g., a cellulose acetate or sulfonated polysulfone.

REFERENCES:
patent: 3808305 (1974-04-01), Gregor
patent: 4302334 (1981-11-01), Jakabhazy et al.
patent: 4384047 (1983-05-01), Benzinger et al.
patent: 4399035 (1983-08-01), Nohmi et al.

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