Copolymerization of Ethylene with Diene Comonomers using Bis(2-PhInd)ZrCl2 as Metallocene Catalyst: Ι. Copolymerization State

The copolymerization of ethylene with two distinct diene comonomers, i.e. 5-ethhylidene-2-norbornene (ENB) and 2-methyl-1,3-butadiene (ISP) was carried out employing bis(2-phenylindenyl)ZrCl2 and methylaluminoxane (MAO) as catalyst and cocatalyst, respectively. Then, the synthesized copolymers microstructure was studied using 1HNMR and thermal analysis. It was found that, although the comonomer incorporation is well done in the case of the former, very low amount of the latter is entered into the copolymer chain