Hollow fiber membrane incorporating a polyimide and process...

Details Hollow fiber membrane incorporating a polyimide and process... Hollow fiber membrane incorporating a polyimide and process...

B - Operations, Transporting

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B01D 71/64 (2006.01) B01D 61/30 (2006.01) B01D 69/02 (2006.01) B01D 69/08 (2006.01) D01D 5/24 (2006.01) D01F 6/74 (2006.01) A61M 1/16 (2006.01)

Patent

CA 2143863

The invention relates to asymmetric hollow fiber separative membranes based on polyimide polymer. The membranes are dry-wet spun into hollow fiber from a 15-25 % solution of a highly polar polyimide polymer using a precipitating solution in the lumen.

L'invention se rapporte à des membranes de séparation à fibres creuses asymétriques, composées de polyimide. Les membranes sont filées à sec/au mouillé sous forme de fibres creuses à partir d'une solution de 15 à 25 % d'un polyimide hautement polaire, une solution de précipitation étant utilisée dans la lumière.

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