Nanofibre membrane layer for water and air filtration
AssigneeDsm IP Assets B.V.
InventorsKonraad Albert Louise Hector Dullaert, Marko Dorschu, Arnaud David Henri Chiche
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Abstract
The invention relates to a nanofiber membrane layer having a basis weight of 0.01-50 g/m2 and a porosity of 60-95%, comprising a nanoweb made of polymeric nanofibers with a number average diameter in the range of 50-600 nm, consisting of a polymer composition comprising a semicrystalline polyamide having a C/N ratio of at most 5.5. The invention also relates to water and air filtration devices comprising such a nanofiber membrane layer.
Claims17
A nanofiber membrane layer comprising a nanoweb made of polymeric nanofibers with a number average diameter in the range of 50-600 nm, the polymeric nanofibers consisting of a polymer composition comprising a semicrystalline polyamide having a C/N ratio of at most 5.5, wherein the nanofiber membrane layer has a basis weight of 0.01-50 g/m2, a porosity of 60-95% and a mean pore size in a range from 0.01 to 2 μm.
Dependencies are inferred from the claim text.