Hollow fiber for dialysis and method for manufacture thereof

Details Hollow fiber for dialysis and method for manufacture thereof Hollow fiber for dialysis and method for manufacture thereof

1987-05-26

1989-04-25

Spear, Frank

Liquid purification or separation

Filter

Material

21050029, 264199, B01D 1300

Patent

active

048245690

ABSTRACT:
Unstretched hollow fibers of cuprammonium cellulose for dialysis possessing a film structure having a porosity of 15 to 25%, a pore diameter of 25 to 40 .ANG., and an ultrafiltration ratio of 3.0 to 5.5 ml/mmHg.hr.m.sup.2 are obtained by extruding, coagulating, and regenerating a cuprammonium cellulose spinning dope having a cellulose concentration of 6.8 to 8.7% and a viscosity of 500 to 1,300 poises (at 20.degree. C.).

REFERENCES:
patent: 3888771 (1975-06-01), Isuge et al.
patent: 4332752 (1982-06-01), Henne et al.
patent: 4444716 (1984-04-01), Adyagi et al.
patent: 4535028 (1985-08-01), Yokogi et al.
patent: 4604326 (1986-08-01), Manabe et al.
patent: 4609464 (1986-09-01), Adyagi et al.
Japan Patent Abstracts: JP-A-61-146306, 11/86.
Japan Patent Abstracts: JP-A-60-166008, 1/86.
Japan Patent Abstracts: JP-A-60-166007, 1/86.
Japan Patent Abstracts: JP-A-59-225708, 4/85.
European Search Report on EP 85 11 0773.

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