Multilayer composite hollow fibers and method of making same

Details Multilayer composite hollow fibers and method of making same Multilayer composite hollow fibers and method of making same

B - Operations, Transporting

01

D

18/15

B01D 69/08 (2006.01) B01D 67/00 (2006.01) B01D 69/12 (2006.01) D01D 5/24 (2006.01)

Patent

CA 1285356

Abstract of the Disclosure Disclosed are a multilayer composite hollow fiber comprising at least one nonporous separating membrane layer (A) performing a separating function and two or more porous layers (B) performing a reinforc- ing function, the layer (A) and the layers (B) being alternately laminated so as to give a structure having internal and external surfaces formed by the porous layers (B), as well as a method of making such a hollow fiber. In this multilayer composite hollow fiber, the separating membrane can be formed as an ultrathin, homogeneous membrane. Moreover, the separating mem- brane is not liable to get damaged owing to the unique structure of the hollow fiber. Furthermore, such hollow fibers can be readily and stably produced on an industrial scale.

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