Membrane which comprises a blend of a polysulphone or a polyether sulphone and polyethylene oxide/polypropylene oxide substituted ethylene diamine
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United States of America Patent
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Dec 17, 2002
Issued Date -
N/A
app pub date -
Oct 23, 2000
filing date -
Apr 23, 1998
priority date (Note) -
Expired
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Abstract
A membrane which can be used in membrane filtration processes and which has a reduced tendency to fouling is a polysulphone or a plyether sulphone and a polyethylene oxide/polypropylene oxide substituted diamine and can be made by a phase inversion process in the presence of pore modifying agents such as an alcohol, glycerol or glycol to give a membrane which has a pore size of 0.1.mu. to 1 micron and is hydrophilic.
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