Poly(arylene ether sulfone) polymer membranes
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- BASF SE
- Filing Date
- 2024-07-29
- Publication Date
- 2026-07-08
AI Technical Summary
Existing ultrafiltration membranes face challenges in achieving high selectivity, low molecular weight cut-off, and high water permeation rates while maintaining good mechanical properties, especially for medical applications like dialysis. Additionally, there is a need for membranes that do not leach residues, such as pore-forming additives, and that have stable polymer solutions for effective membrane production.
The development of a membrane comprising two different poly(arylene ether sulfone) polymers (P1) and (P2) and a copolymer (CP), where the copolymer includes blocks of poly(arylene ether sulfone) and polyalkylene oxide. This membrane formulation enhances selectivity, efficiency, and mechanical properties, and avoids the use of leachable components.
The membrane exhibits excellent selectivity and efficiency, with low molecular weight cut-off and high pure water permeability, while maintaining good mechanical properties. It also avoids the leaching of residues, ensuring stability and effectiveness in medical applications such as dialysis.
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