Preparations of Propylene and Ethylene Ionomers with Solvay-Type TiCL3 Catalyst

Terpolymerizations of propylene/1-hexene/ethylchloroaluminum-10-undecenoate (ECAU) and ethylene/1-hexene/ECAU systems were carried out with Solvay-type TiCl3 and diethylaluminum chloride to prepare the propylene ionomer and ethylene ionomer, respectively. By adding 1-hexene, the ECAU contents of polymer could be enhanced. The acid contents of the propylene terpolymer was higher than that of the etylene one. This indicated polar monomer (ECAU) was incorporated more easily into propylene-based polymer chain. With increasing ECAU in both systems, the rate of terpolymerization decreased while the induction periods of polymerization increased. The propylene terpolymer salts exhibited higher T-m and T-c than the acid form of terpolymers due to the ionic cross-linking of terpolymer salts.