Novel aromatic copolymer comprising sulfonate-substituted naphthalene repeat units and aromatic phenyl, biphenyl or terphenyl repeat units, and the production and use thereof

Abstract

The invention relates to a novel copolymer, the method of production thereof and the use thereof for separation membranes. The aromatic copolymer comprises: a) naphthalene repeat units, which are substituted with sulfonic acid, sulfonate and / or sulfonic acid ester groups, and b) aromatic phenylene repeat units selected from phenyl, biphenyl and terphenyl repeat units, wherein at least one of the phenyl rings is meta-linked with each aromatic phenylene repeat unit.

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