D - Textiles – Paper – 01 – F
Patent
D - Textiles, Paper
01
F
18/15
D01F 1/08 (2006.01) A61M 1/18 (2006.01) B01D 61/24 (2006.01) B01D 67/00 (2006.01) B01D 69/08 (2006.01) D01D 5/24 (2006.01) D01F 6/64 (2006.01) D01F 6/96 (2006.01)
Patent
CA 1294745
Abstract An asymmetric microporous hollow fiber for hemodialysis is made up of 90 to 99% by weight of a first hydrophobic polymer and 10 to 1% by weight of a second hydrophilic polymer. The fiber has a water adsorbing capacity of 3 to 10% and is produced by extruding a solution containing 12 to 20% by weight of the first polymer and 2 to 10% by weight of the second polymer, the rest be- ing a solvent to give a continuous hollow structure with a wall, causing a precipitation liquor to act on said structure in an outward direction through the wall thereof with the full precipitation thereof and the concurrent dissol- ution and washing out of a part of said first polymer from said extruded structure and then washing out the dissolved out part of the pore-forming substance and the other organic components. Thereafter the fiber so produced is fixed in a washing bath.
486874
Fresenius Ag
Shapiro Cohen
LandOfFree
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