US2011203990A1PendingUtilityA1

Chlorine resistant polyamides and membranes made from the same

43
Assignee: MURPHY ANDREW PATRICKPriority: May 9, 2007Filed: Aug 23, 2010Published: Aug 25, 2011
Est. expiryMay 9, 2027(~0.8 yrs left)· nominal 20-yr term from priority
Inventors:Andrew MurphyBalasingam MurugaverlRobert L. Riley
B01D 2323/36B01D 71/56Y02A20/131C02F 1/441C08G 69/32B01D 71/82C08G 69/28C08G 69/26B01D 63/10
43
PatentIndex Score
0
Cited by
0
References
0
Claims

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.

Claims

exact text as granted — not AI-modified
1 . A non-ionizing acid chloride monomer modified with electron-withdrawing groups that exhibit sufficient activity to (i) minimize any chlorination of an acid group and an amine group on a polyamide, and (ii) minimize N-chorination on a polyamide. 
     
     
         2 . The acid chloride monomer as claimed in  claim 1  wherein said electron-withdrawing groups are selected from the group consisting of fluoro, chloro, nitro groups and mixtures thereof. 
     
     
         3 . The non-ionizing acid chloride monomer of  claim 1  is monofluorotrimesoyl chloride. 
     
     
         4 . The non-ionizing acid chloride monomer of  claim 1  is perfluorotrimesoyl chloride. 
     
     
         5 . The non-ionizing acid chloride monomer of  claim 1  is nitrotimesoyl chloride. 
     
     
         6 . The non-ionizing acid chloride monomer of  claim 1  is 1,3,5-benzenetri-(difluoroacetoyl chloride). 
     
     
         7 . A chlorine resistant polyamide comprising the reaction product of an amine and the acid chloride monomer of  claim 1 , 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. 
     
     
         8 . The chlorine resistant polyamide of  claim 7 , wherein the acid chloride monomer is monofluorotrimesoyl chloride. 
     
     
         9 . The chlorine resistant polyamide of  claim 8 , wherein the amine is tetrakis (aminomethyl) methane. 
     
     
         10 . The chlorine resistant polyamide of  claim 7 , wherein the acid chloride monomer is perfluorotrimesoyl chloride. 
     
     
         11 . The chlorine resistant polyamide of  claim 7 , wherein the acid chloride monomer is nitrotrimesoyl chloride. 
     
     
         12 . The chlorine resistant polyamide of  claim 7 , wherein the acid chloride monomer is perchlorotrimesoyl chloride. 
     
     
         13 . The chlorine resistant polyamide of  claim 7 , wherein the acid chloride monomer is 1,3,5-benzenetri-(difluoroacetoyl chloride). 
     
     
         14 . The chlorine resistant polyamide of  claim 7 , wherein the amine is m-phenylenediamine. 
     
     
         15 . The chlorine resistant polyamide of  claim 7 , wherein the amine is 1,3,5-triaminobenzene. 
     
     
         16 . The chlorine resistant polyamide of  claim 7 , wherein the amine is 1,2,4,5-tetraaminobenzene. 
     
     
         17 . The chlorine resistant polyamide of  claim 7 , wherein the amine is 1,2,3,4-tetraaminocyclohexane. 
     
     
         18 . The chlorine resistant polyamide of  claim 7 , wherein the amine is tetrakis (aminomethyl)methane. 
     
     
         19 . A chlorine resistant polyamide comprising 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. 
     
     
         20 . The chlorine resistant polyamide of  claim 19 , wherein the acid chloride monomer is monofluorotrimesoyl chloride. 
     
     
         21 . The chlorine resistant polyamide of  claim 19 , wherein the acid chloride monomer is perfluorotrimesoyl chloride. 
     
     
         22 . The chlorine resistant polyamide of  claim 19 , wherein the acid chloride monomer is nitrotrimesoyl chloride. 
     
     
         23 . The chlorine resistant polyamide of  claim 19 , wherein the acid chloride monomer is perchlorotrimesoyl chloride. 
     
     
         24 . The chlorine resistant polyamide of  claim 19 , wherein the acid chloride monomer is 1,3,5-benzenetri-(difluoroacetoyl chloride). 
     
     
         25 . The chlorine resistant polyamide of  claim 19 , wherein the amine is m-phenylenediamine. 
     
     
         26 . The chlorine resistant polyamide of  claim 19 , wherein the amine is 1,3,5-triaminobenzene. 
     
     
         27 . The chlorine resistant polyamide of  claim 19 , wherein the amine is 1,2,4,5-tetraaminobenzene. 
     
     
         28 . The chlorine resistant polyamide of  claim 19 , wherein the amine is 1,2,3,4-tetraaminocyclohexane. 
     
     
         29 . The chlorine resistant polyamide of  claim 19 , wherein the amine is tetrakis (aminomethyl) methane. 
     
     
         30 . The chlorine resistant polyamide of  claim 20 , wherein the amine is tetrakis (aminomethyl) methane. 
     
     
         31 . A reverse osmosis desalination unit comprising a membrane support and, mounted on the membrane support, a chlorine resistant membrane including a chlorine resistant polyamide comprising 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. 
     
     
         32 . The desalination unit of  claim 31 , wherein the acid chloride monomer is monofluorotrimesoyl chloride. 
     
     
         33 . The desalination unit of  claim 31 , wherein the acid chloride monomer is perfluorotrimesoyl chloride. 
     
     
         34 . The desalination unit of  claim 31 , wherein the acid chloride monomer is nitrotrimesoyl chloride. 
     
     
         35 . The desalination unit of  claim 31 , wherein the acid chloride monomer is perchlorotrimesoyl chloride. 
     
     
         36 . The desalination unit of  claim 31 , wherein the acid chloride monomer is 1,3,5-benzenetri-(difluoroacetoyl chloride).

Join the waitlist — get patent alerts

Track US2011203990A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.