Patent ID: 6670424
Filing Date: 2003-12-30
Classification: C08F,C08J

Abstract:
A sulfonated polymer comprising in whole or in part cross-linked sulfonyl groups, and wherein at least a fraction of the cross-linking bonds bear an ionic charge and are of the type:Pâ€”SO2â€”Yâˆ’(M+)â€”SO2â€”Pâ€²Pâ€”SO2(M+)Yâˆ’SO2â€”(Qâ€”SO2)rYâˆ’(M+)SO2â€”Pâ€²whereinP and Pâ€² are the same or different and are part of a polymeric chain; Y comprises N or CR wherein R comprises H, CN, F, SOrR3, C1-20 alkyl substituted or unsubstituted; C1-20 aryl substituted or unsubstituted; C1-20 alklyene substituted or unsubstituted, wherein the substituent comprises one or more halogens, and wherein the chain may comprise one or more substituent F, SO2R, aza, oxa, thia or dioxathia; R3 comprises F, C1-20 alkyl substituted or unsubstituted; C1-20 aryl substituted or unsubstituted; C1-20 alklyene substituted or unsubstituted, wherein the substituent comprises one or more halogens; M+ comprises an inorganic or organic cation; Q comprises a divalent radical C1-20 alkyl, C1-20 oxaalkyl, C1-20 azaalkyl, C1-20 thiaalkyl, C1-20 aryl or C1-20 alkylaryl, each being optionally substituted by one or more halogens, and wherein the chain comprises one or more substituents oxa, aza or thia; r is 0 or 1; and the sulfonated polymer is partially or completely fluorinated.