| 摘要 |
Ion conducting membranes for electrochemical applications, especially fuel cells, and based on aromatic polyimide- or copolyimide polymers containing units which can be the same or different are new. Ion conducting membranes for electrochemical applications, especially fuel cells, and based on aromatic polyimide- or copolyimide polymers containing units which can be the same or different and of formula (I). Independent claims are included for the following: (1) preparation of the membrane by direct reaction of a diamine, diaminopyridine, and/or diaminopyrimidine with naphthalene-1,4,5,8-tetracarboxylic acid dianhydride, a bis-(nahthalenic acid anhydride) and/or a diacid-dialkyl ester or diacyl chloride-dialkylester derivative of this dianhydride; and (2) preparation of the membrane by cast-blocking (sic) of polyimide- or copolyimide polymer. B = at least one optionally substituted heterocyclic compound of formula (II); R = H, phenyl, a phosphonic acid group or at least one chain containing a phosphonic acid group; and A = one of naphthalene containing groups of formula (III), and forms 6-atom rings with the adjacent imide groups. |
