Production of composite membranes
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United States of America Patent
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-
Jul 16, 1985
Issued Date -
N/A
app pub date -
Oct 31, 1984
filing date -
Jul 30, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process is disclosed for producing a composite reverse osmosis membrane. The process involves forming a porous polysulfone membrane from a solution of polysulfone followed by quenching the polysulfone membrane in an aqueous solution of m-phenylenediamine followed by reacting the m-phenylenediamine on the polysulfone membrane with either trimesoyl chloride or cyclohexane-1,3,5-tricarbonyl chloride in a water immiscible solution thereof.
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