| abstract |
The invention discloses a cationic polymerization method, which comprises: under cationic polymerization conditions, in at least one diluent, at least one monoolefin and at least one alkylstyrene and each group in the initiator system Partial contact; The initiator system contains at least one compound capable of providing protons, at least one Lewis acid and at least one activator, and the activator is selected from compounds shown in formula I-1 and formula I-2 For the compound shown, the diluent is selected from C 3 -C 10 aliphatic alkanes and C 3 -C 10 alicyclic alkanes. The polymerization method of the present invention can not only obtain improved polymerization efficiency, but also produce polymers with higher molecular weights. At the same time, the polymerization method of the present invention can also regulate the molecular weight of the prepared polymer to obtain polymers with different molecular weights, thereby meeting the requirements of different applications. |