Semipermeable Membrane
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Jul 11, 2022
filing date -
Jul 11, 2022
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Abstract
A semipermeable membrane comprising a polyether sulfone, a sulfonated polyarylene ether copolymer, and polyvinylpyrrolidone, having cytokine adsorption capabilities suitable for continuous renal replacement therapy. The sulfonated polyarylene ether copolymer includes a hydrophobic segment repeating unit represented by a formula (1) and a hydrophilic segment repeating unit represented by a formula (2) as copolymerization components. A ratio of (the polyether sulfone)/(the sulfonated polyarylene ether copolymer)/(the polyvinylpyrrolidone) (in mass) in the entirety of the semipermeable membrane is (75 to 90)/(7 to 22)/(3 to 18).
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