B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 69/08 (2006.01) B01D 61/14 (2006.01) B01D 63/02 (2006.01) B01D 67/00 (2006.01) B01D 69/02 (2006.01) B01D 71/34 (2006.01) B01D 71/68 (2006.01)
Patent
CA 2434940
A porous asymmetric hollow polymer fiber membrane having an inside surface having a coarse porous structure and an outside surface having a dense porous structure, the average pore size rating of the pores at the inside surface being greater than the average pore size rating of the pores at the outside surface, as well as filters and filter devices comprising one or more of the hollow fiber membranes, the filter and devices preferably being arranged to direct fluid flow from the inside surface of the membranes to the outside surface, and methods of using the filters and filter devices, are disclosed.
La présente invention concerne des membranes à fibres polymères creuses asymétriques poreuses présentant une surface intérieure ayant une structure poreuse grossière, et une surface extérieure ayant une structure poreuse dense, la taille de pore moyenne sur la surface intérieure étant supérieure à la taille de pore moyenne sur la surface extérieure. Cette invention concerne également des filtres et des dispositifs filtrants comprenant une ou plusieurs membranes à fibres creuses, les filtres et dispositifs filtrants étant de préférence conçus pour conduire le flux de liquide de la surface intérieure des membranes à leur surface extérieure, ainsi que des procédés d'utilisation des filtres et dispositifs filtrants.
Amersham Biosciences Membrane Separations Corp.
Fetherstonhaugh & Co.
Innovasep Technology Corporation
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