| abstract |
The present invention provides the SO for having polymer while cross-linking reaction is suppressed 2 F bases are converted into the side base with multiple ion-exchange groups, can manufacture the short-cut method of ion exchange capacity height and the low ionic polymers film of moisture content.By the SO of polymer 2 F (base (1)) is converted into SO successively 2 NZ 1 Z 2 (group (2)), SO 2 N ‑ (M α + )SO 2 (CF 2 ) 2 SO 2 F (group (3)), SO 2 N ‑ (H + )SO 2 (CF 2 ) 2 SO 2 F (group (4)), SO 2 N ‑ (M β + )SO 2 (CF 2 ) 2 SO 3 ‑ M β + (group (5)) and when obtaining ionic polymers, while being filmed under any state of group (1)~(4) to polymer and form polymer film, polymer is heat-treated in the state of group (4).Here, Z 1 、Z 2 For hydrogen atom etc., M α + For 1 valency cation, M β + For hydrogen ion or 1 valency cation. |