Isobutene with Conjugated Trienes

Table 2. Cationic copolymerization of isobutene with linear conjugated trienes... 

The synthesis of isobutene copolymers containing conjugated double bonds was accomplished only a few years ago by copolymerizing the isoolefin with suitable trienes. The results, largely unpublished, permit to compare the behaviour of these two classes of copolymers which display several analogies. The presence of the conjugated double bond functionalities gives rise to several possibilities of post-modification reactions which extend widely the utilization of these classes of synthetic elastomers. 

---