Hollow fibre membrane

Matthias Wessling (Inventor), Dimitrios Stamatialis (Inventor), K.K. Kopec (Inventor), S.M. Dutczak (Inventor)

Research output: Patent


The present invention relates to a process for manufacturing a hollow fibre membrane having a supporting layer and a separating layer, said process comprising: (a) extruding a spinning composition comprising a first polymer and a solvent for the first polymer through an inner annular orifice of a hollow-fibre die; (b) co-extruding a composition comprising an organic nucleophilic reagent and a mixtures of a solvent and a non-solvent for the first polymer, wherein the composition is either extruded through a central annular orifice of the hollow-fibre die or through an outer annular orifice of a hollow-fibre die; and (c) passing the hollow-fibre through a coagulation bath. The hollow fibre membrane according to the present invention can be used in gas separation processes, vapour separation processes and liquid filtration processes.

Original languageEnglish
Patent numberUS2013192459
IPCB01D 69/ 12 A I
Priority date4/03/11
Publication statusPublished - 1 Aug 2013

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  • Cite this

    Wessling, M., Stamatialis, D., Kopec, K. K., & Dutczak, S. M. (2013). IPC No. B01D 69/ 12 A I. Hollow fibre membrane. (Patent No. US2013192459).