| abstract |
The present invention relates to heat-stable anion exchangers based on at least one aromatic monomer and at least one crosslinker having structural elements of the general formula (I) n nwhere n Ak, Ak′, Ak″ are in each case independently of one another identically or differently a C 1 -C 18 -alkyl radical, n is an even number between 5 and 18, x+y=2 and X is Cl, Br, OH, HCO 3 , HSO 4 , ½ (SO 4 ), ½ CO 3 , NO 3 , F, H 2 PO 4 , ½ HPO 4 , ⅓ PO 4 with the result that these anion exchangers, preferably in the OH form, withstand a working temperature of at least 60° C., preferably of at least 80° C., over a relatively long time, a process for production thereof and also use thereof. |