Hollow fiber membrane

Details Hollow fiber membrane Hollow fiber membrane

1989-07-18

1990-04-24

Sever, Frank

Liquid purification or separation

Filter

Material

21050029, H01D 1301

Patent

active

049198092

ABSTRACT:
Disclosed is a regenerated cellulose hollow fiber membrane having a hollow portion continuously penetrating in the direction of the fiber axis, a wet porosity of 60 to 95%, and an albumin sieving coefficient not larger than 0.15 at hemofiltration. The hollow fiber membrane preferably has an average pore radius in the wet state of 40 to 250 angstroms, and the mass transfer coefficient for .beta..sub.2 -microglobulin of at least 2.times.10.sup.-5 cm/sec. The hollow fiber membrane preferably contains polyethylene glycol and has the albumin sieving coefficient not larger than 0.10. The hollow fiber membrane is especially useful for hemofiltration therapy such as hemodialysis.

REFERENCES:
patent: 4219426 (1980-08-01), Spekle et al.
patent: 4604326 (1986-08-01), Manabe et al.
patent: 4787977 (1988-11-01), Nakano et al.
patent: 4822540 (1989-04-01), Manabe et al.

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