发明公开
EP0098392A2 Filtration membrane and process for producing the membrane
失效
Membran und Verfahren zu ihrer Herstellung。
- 专利标题： Filtration membrane and process for producing the membrane
- 专利标题（中）： Membran und Verfahren zu ihrer Herstellung。
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申请号： EP83105534.8申请日： 1983-06-06
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公开(公告)号： EP0098392A2公开(公告)日： 1984-01-18
- 发明人: Göhl, Hermann Joseph , Geiling, Günther Friedrich , Mayer, Georg Bernhard , Gullberg, Claes-Ake
- 申请人： Gambro Dialysatoren GmbH & Co. KG , Gambro Lundia AB
- 申请人地址： Holger-Crafoord-Strasse 26 D-72379 Hechingen DE
- 专利权人： Gambro Dialysatoren GmbH & Co. KG,Gambro Lundia AB
- 当前专利权人： Gambro Dialysatoren GmbH & Co. KG,Gambro Lundia AB
- 当前专利权人地址： Holger-Crafoord-Strasse 26 D-72379 Hechingen DE
- 代理机构： Boberg, Nils Gunnar Erik
- 优先权： SE8204103 19820702
- 主分类号： B01D13/04
- IPC分类号： B01D13/04 ; A61M1/34
摘要：
Filtration membrane, especially adapted for use in hemofiltration as well as filtration of infusion solutions.
The membrane, preferably in the form of a hollow fiber, is made of a polymer which is soluble in a polar, non-protonic organic solvent. The most preferred polymer for the membrane material is polyamide. Characterizing for the membrane is high ultrafiltration rates (permeabilities to water) of up to 500 x 10- 4 ml/sec. x cm2 x atm., and impermeability to albumin (M w 68,000).
The membrane is prepared by extruding a polymer solution with a center liquid under conditions such that the volume of polymer solution to volume of center liquid ratio is within the range of from 2 : 1 to 4 : 1. Simultaneously, the inner diameter to wall thickness ratio of the hollow fiber is preferably correlated to the polymer concentration and is set to 150:75 to 280:75 at a polymer concentration of 5-20%. The most preferred such correlation is 220 : 75 at a polymer concentration of 11 %.
The membrane, preferably in the form of a hollow fiber, is made of a polymer which is soluble in a polar, non-protonic organic solvent. The most preferred polymer for the membrane material is polyamide. Characterizing for the membrane is high ultrafiltration rates (permeabilities to water) of up to 500 x 10- 4 ml/sec. x cm2 x atm., and impermeability to albumin (M w 68,000).
The membrane is prepared by extruding a polymer solution with a center liquid under conditions such that the volume of polymer solution to volume of center liquid ratio is within the range of from 2 : 1 to 4 : 1. Simultaneously, the inner diameter to wall thickness ratio of the hollow fiber is preferably correlated to the polymer concentration and is set to 150:75 to 280:75 at a polymer concentration of 5-20%. The most preferred such correlation is 220 : 75 at a polymer concentration of 11 %.
公开/授权文献
- EP0098392B1 Filtration membrane and process for producing the membrane 公开/授权日：1987-12-09
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