AQUEOUS FORMULATIONS COMPRISING ACID GROUPS AND/OR SALTS OF ACID GROUP-CARRYING POLYAROMATIC COMPOUNDS, METHOD FOR THE PRODUCTION THEREOF, FURTHER FORMULATIONS, PRODUCED BY USING THE AQUEOUS FORMULATIONS AND USE OF THE FURTHER FORMULATIONS IN FUEL CE

摘要

The invention relates to a method for the production of aqueous formulations (A), comprising at least one acid group and/or salts of acid group-carrying polyaromatic compounds and aqueous formulations (A), produced according to the inventive method. The invention further relates to a method for the production of dried formulations (B) by removing the water from the aqueous formulations (A) and to the dried formulations (B). Furthermore, the invention relates to a formulation (C) comprising the inventive dried formulation (B) and water, or an aqueous formulation (A) and a water-containing formulation (D) comprising the inventive aqueous formulation (A) or the inventive formulation (C) and additionally at least 2 wt.% of an organic solvent. The invention further relates to dry formulations (E), obtained from the inventive aqueous formulations (D) by removing water. And it relates to the use of the inventive aqueous formulations (D) and the dry formulations (E) obtained thereof for the production of a polymer electrolyte membrane and the polymer electrolyte membrane and a membrane electrode unit (MEA) and a fuel cell, comprising the inventive polymer electrolyte membrane.