https://doi.org/10.1351/goldbook.15269
Polymer composed of macromolecules containing imino groups as linkages in the backbone: \[\ce{-NR\bond{-}}\] where \(\ce{R}\) is hydrogen, alkyl, aryl, or heteroaryl.
Notes:
- A polymer containing only pendent amino groups is excluded. However, in organic chemistry, low-molecular-weight compounds containing three or more amino groups are also called polyamines.
- Quaternized polyamines have iminio linkages, \(\ce{-N^{+}R^{1}R^{2}\bond{-}}\), in the backbone (\(\ce{R^1}\) and \(\ce{R^2}\) are each hydrogen, or an alkyl, aryl, or heteroaryl group) and they are a structure-based subclass of ionenes.
Examples: 