ionene

https://doi.org/10.1351/goldbook.IT07210
Polymer composed of macromolecules in which ionized or ionic groups are parts of main chains.
Note:
Most commonly, the ionic groups in ionenes are quaternary ammonium groups.
Source:
PAC, 2006, 78, 2067. 'Terminology of polymers containing ionizable or ionic groups and of polymers containing ions (IUPAC Recommendations 2006)' on page 2071 (https://doi.org/10.1351/pac200678112067)