Asymmetric, permanently hydrophilic filtration membranes

Asymmetric, permanently hydrophilic filtration membranes

Asymmetric microfiltration and loose ultrafiltration membranes with permanent hydrophilic groups in the matrix are described. The membranes are internally hydrophilic and non-leachable. The membranes are prepared from a casting solution containing polysulfone and an additional hydrophilic polymer co...

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Hauptverfasser: RICHARD MC DONOGH, I-FAN WANG
Format: Patent
Sprache:eng
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PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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creator RICHARD MC DONOGH
I-FAN WANG
description Asymmetric microfiltration and loose ultrafiltration membranes with permanent hydrophilic groups in the matrix are described. The membranes are internally hydrophilic and non-leachable. The membranes are prepared from a casting solution containing polysulfone and an additional hydrophilic polymer component, such as polyvinylpyrrolidone, which imparts an interpenetrating, permanent hydrophilic group to the membrane. The membranes combine high water flow rates with integrity testability by conventional diffusion methods.
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PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
title Asymmetric, permanently hydrophilic filtration membranes
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