Patent ID: 8263672
Filing Date: 2012-09-11
Classification: B01D,C08G,C08J,C08L,H01M,Y02E

Abstract:
1. An ion conducting membrane comprising: a block copolymer including a polymer having formula (1): wherein: A is a first polymer segment that is repeated m times to form first polymer block A B is a second polymer segment that is repeated n times to form second polymer block B C is a third polymer segment that is repeated p times to form third polymer block C m, n, and p are each independently an integer from 1 to 200; with the proviso that when A is hydrophobic, B is hydrophilic and C is hydrophobic; or when A is hydrophilic, B is hydrophobic and C is hydrophilic, wherein when A is hydrophilic, A comprises a first substituent for proton transfer, when B is hydrophilic, B includes a second substituent for proton transfer, and when C is hydrophilic, C includes a third substituent for proton transfer and wherein when A m and C p are both hydrophilic, A and C are each independently described by formula (2) or when B n is hydrophilic, B is described by formula (2): Y R M is a metal, ammonium or alkylammonium; R T Y R j is an integer from 1 to 30, with the proviso that when j>1, the Y 2 between sequential aromatic rings are the same or different and the R 5 , R 6 , R 7 , R 8 , and R 9 on sequential aromatic rings are the same or different; wherein at least one of R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , and R 13 is —SO 3 H, —SO 3 − M + , —COOH, —COO − M + , —PO 3 H 2 , —PO 3 H − M + , —PO 3 2− M 2 + , or —PO 3 2− M 2+ ; and wherein when A m and C p are both hydrophobic, A and C are each independently described by formula (4) or when B n is hydrophobic, B is described by formula (4): wherein: Y R k is an integer from 1 to 30; with the proviso that when k>1, the Y 3 between sequential aromatic rings are the same or different and the R 14 , R 15 , R 16 , and R 17 on sequential aromatic rings are the same or different; and i is an integer from 1 to 6; with the proviso that when i>1, the Y 1 between sequential aromatic rings are the same or different; the T 1 on sequential aromatic rings are the same or different and the R 1 , R 2 , and R 3 on sequential aromatic rings are the same or different; wherein for at least one aromatic ring in formula (2), either T 1 is not H or one of R 1 , R 2 , or R 3 is —SO 3 H, —SO 3 − M + , —COOH, —COO − M + , —PO 3 H 2 , —PO 3 H − M + , —PO 3 2− M 2 + , or —PO 3 2− M 2+ , wherein formula (2) includes a Y 1 selected from the group consisting of —PO(T 1 )-, and —C(CH 3 )(T 1 )- with T 1 given by formula (3).