Chlorine resistant polyamides and membranes made from the same
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United States of America Patent
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Oct 5, 2010
Grant Date -
Nov 13, 2008
app pub date -
May 9, 2007
filing date -
May 9, 2007
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Abstract
A chlorine resistant polyamide is formed from the reaction product of an amine and an acid chloride monomer wherein the acid chloride monomer is modified with electron-withdrawing groups that exhibit sufficient activity to (i) minimize any chlorination on both the amine and acid chloride side and (ii) minimize N-chlorination. A membrane is made from the polyamide and, in one application, the membrane is used in a desalination unit.
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