Back to results
US 2024/0157306 A1Published application
Hollow-fiber membrane and method making thereof
Assignee3M Innovative Properties Company
InventorsChristian Krumm, Ramona Osterloh, Pierre-Alexandre Bourgeois, Amy S. Determan, Sven Frost, Manfred Trussner, Mathias Stroschke, Ki-Joo Sung
Life of this patent
Estimating the term…
Abstract
A hollow-fiber membrane. The hollow-fiber membrane is made from a polymeric blend comprising an aromatic sulfone polymer and polyoxazoline; wherein the hollow-fiber membrane comprises an inner surface facing towards its lumen, an outer surface facing outwards and an intermediate wall having a wall thickness; wherein the hollow-fiber membrane is an integrally asymmetric, permeable hollow-fiber membrane.
Claims22
A hollow-fiber membrane;
- the hollow-fiber membrane made from a polymeric blend comprising an aromatic sulfone polymer and a polyoxazoline;
- wherein the hollow-fiber membrane comprises an inner surface facing towards its lumen, an outer surface facing outwards and an intermediate wall having a wall thickness;
- wherein the hollow-fiber membrane is an integrally asymmetric, permeable hollow-fiber membrane.
A method, comprising:
- providing a spinning solution comprising an aromatic sulfone polymer and polyoxazoline, and a bore liquid comprising water, a solvent and a non-solvent;
- and
- spinning a hollow-fiber with a spinneret outer diameter for dope in the range of from 300 to 1000 μm, a spinneret needle outer diameter in the range of from 200 to 1000 μm and a spinneret needle inner diameter in the range of from 100 to 1000 μm.
19-21. (canceled)
24-27. (canceled)
Dependencies are inferred from the claim text.