Semipermeable membrane and process for preparing same

Details Semipermeable membrane and process for preparing same Semipermeable membrane and process for preparing same

1990-04-30

1991-01-08

Foelak, Morton

Liquid purification or separation

Filter

Material

21050027, 21050041, 521 62, 521 64, 521138, B01D 1301

Patent

active

049832930

ABSTRACT:
The semipermeable membrane contains a polyarylate resin and a polysulfone resin as a major membrane material and has a fibrilliform structure with a high mechanical strength and has a water permeability of 1,500 ml/m.sup.2.hr.mmHg or lower as well as an inhibitory rate against bovine serum albumin of 80% or higher and against cytochrome C of 40% or lower. The membrane is prepared by discharging a stock solution containing the polyarylate resin and the polysulfone resin in the total amount of 10% to 25% by weight and a core solution of an organic solvent containing water in the amount of 25% to 80% by volume into a coagulating solution.

REFERENCES:
patent: 4208508 (1980-06-01), Hashimo et al.
patent: 4240914 (1980-12-01), Iwama et al.
patent: 4705632 (1987-11-01), Yagita et al.
patent: 4842740 (1989-06-01), Chung et al.

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