Acid and base functionalization of ethylene‐propylene rubbers, 1. Grafting of tertiary amino groups and “interpolymer” network formation

Base functionalization of saturated ethylene‐propylene rubbers (EPR) was performed either by means of the radical grafting of 2‐(dimethylamino)ethyl methacrylate onto EPR or by the reaction of a succinic anhydride grafted EPR with N,N‐dimethylethylenediamine. Differences in the structure of the grafted molecules and in their thermal stability are also reported. An investigation is made on the reactivity of EPR having tertiary amino pendant groups toward acid functionalized EPR leading to gelation.