Semi-permeable membranes of regenerated cuprammonium cellulose a

Details Semi-permeable membranes of regenerated cuprammonium cellulose a Semi-permeable membranes of regenerated cuprammonium cellulose a

1978-03-15

1979-11-27

Scovronek, Joseph

Liquid purification or separation

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Material

210140, 210321B, 210501, 422 38, 422 44, 422 48, A61L 100, B01D 1304, B01D 3918

Patent

active

041760700

ABSTRACT:
Semi-permeable membranes of regenerated cellulose are subjected to wet-heat sterilization at a temperature of 105.degree. to 140.degree. C. During the treatment, the membranes are maintained in contact with an aqueous medium such as water or physiological saline. For the dialysis of body fluids, hollow fiber, semi-permeable membranes so sterilized exhibit a sonic modulus of at least 6.5.times.10.sup.10 dynes/cm.sup.2. Hollow fibers made of cuprammonium regenerated cellulose are particularly preferred for the above purpose.

REFERENCES:
patent: 3012844 (1961-12-01), Screnock
patent: 3781378 (1973-12-01), Kantor
patent: 3841492 (1974-10-01), Brinegar
patent: 3864289 (1975-02-01), Rendall
patent: 4008047 (1977-02-01), Petersen
"Dialysis Transplantation Nephrology;" Ed. Robinson et al.; vol. 13; pp. 242-249; 1976.
"Millipore;" Tech. Bulletin; 1961; pp. 1, 2, 4, 8 & 9.

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