Polysulfone-based hollow fiber membrane and process for manufact

Details Polysulfone-based hollow fiber membrane and process for manufact Polysulfone-based hollow fiber membrane and process for manufact

1993-04-26

1994-08-23

Spear, Frank

Liquid purification or separation

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Material

21050041, B01D 7168

Patent

active

053404807

ABSTRACT:
The polysulfone hollow fiber membrane of the invention has an inner dense skin layer composed of a polysulfone and a less amount of a polyvinylpyrrolidone, a content of the polyvinylpyrrolidone in the dense skin layer being higher than that in an outer surface layer. This membrane has excellent biocompatibility and antithrombogenetic ability and is, therefore, useful in body fluid treatment, such as hemodialysis, hemofiltration and hemoconcentration, without clogging with thrombi.

REFERENCES:
patent: 5071973 (1991-12-01), Keller et al.
vol. 12, No. 338 (C-527) Sep. 12, 1988 & JP-A-63 097 202 (Toray Ind Inc.) Apr. 27, 1988.
vol. 16, No. 54 (C-909) Feb. 12, 1992 & JP-A-32 54 826 (Kuraray Co. Ltd.) Nov. 13, 1991.
vol. 13, No. 516 (C-656) Nov. 17, 1989 & JP-A-12 10 003 (Daicel Chem Ind Ltd.) Aug. 23, 1989.

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