Patent · US Active

Membrane with improved permeability and selectivity

US10888823B2 · kind B2 · utility

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0References

21Claims

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Assignee

GAMBRO LUNDIA AB · SE

Inventors

Reinhold Buck · Bad Buchau, DE
Jenny Deibert · Rottweil, DE
Arnd Wochner · Dotternhausen, DE

Key dates

Filing date	May 22, 2009
Grant date	Jan 12, 2021
Priority date	—
Expiry date	Sep 5, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2325/341
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A semipermeable asymmetric hollow fiber membrane is provided, based on a hydrophobic polymer, such as polyethersulfone or polysulfone, and on a hydrophilic polymer, such as PVP. The PVP polymer comprises a high molecular weight component and a low molecular weight component. The membrane has a significantly improved permeability and selectivity, based on its structure, composition, and the method of manufacture of the membrane A process for manufacturing such a membrane by a solvent phase inversion spinning process is also provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.