Chlorine resistant polyamides and membranes made from the same

Details Chlorine resistant polyamides and membranes made from the same Chlorine resistant polyamides and membranes made from the same

2007-05-09

2010-10-05

Fortuna, Ana M (Department: 1797)

Liquid purification or separation

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Material

C210S500370, C210S490000, C210S321600, C210S321740, C427S244000, C427S245000

Reexamination Certificate

active

07806275

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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The International Bureau of WIPO, Patent Cooperation Treaty, International Preliminary Report on Patentability, International Application No. PCT/US2008/052919, Nov. 10, 2009.

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