Copolymerization of ethylene and styrene with a MgCl2-supported CpTiCl3 catalyst

Copolymerization of ethylene and styrene was carried out with CpTiCl3/MgCl2 -PMAO as a catalyst at various temperatures and comonomer concentrations. T he present catalyst system produces a pseudorandom copolymer of ethylene an d styrene beside syndiotactic poly(styrene) (sPS) and poly(ethylene) (PE). The copolymers were obtained at temperature greater than or equal to 60 deg rees C, indicating the active species promoting the copolymerization being formed at elevated temperatures. On the other hand, styrene incorporation i n the copolymer increases progressively with the increase of styrene concen tration.