Cation carrier

Abstract

A novel polyether having the following general formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 each stand for hydrogen or an alkyl group. The polyether can capture cations, especially alkali metal ions, when contacted with a cation-containing aqueous alkaline liquid and can release the cations to an aqueous acidic liquid, and thus serves as a cation carrier.

Dependencies are inferred from the claim text.