High performance semipermeable composite membrane and process for producing the same
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United States of America Patent
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Dec 17, 1985
Issued Date -
N/A
app pub date -
Apr 14, 1982
filing date -
Dec 13, 1979
priority date (Note) -
Expired
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Abstract
A high performance semipermeable composite membrane containing a microporous substrate having a semipermeable membrane on the surface thereof. A composite ultrathin solute rejection barrier is formed on an intermediate transport layer which in turn is formed on a substrate. A mixture of a water soluble organic polymer having reactive amino groups in terminal and/or side chains, together with a monomer or monomeric polyamine is reacted with an agent having a polyfunctional group.
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