1-Hexene polymerization using Fe-dopped MgCl2/TiCl4/DNPB Catalyst

Four catalysts with different FeCl3 content and DNBP (di-n-butyl phthalate) as internal donor were prepared by the reaction of MgCl2/FeCl3 -ethanol adduct with TiCl4. Then, synthesized catalysts were applied in 1- hexene polymerization. The FeCl3-doped catalysts exhibited higher activity in comparison to catalyst supported on pure MgCl2. MWD of PHs broadened with an increase in FeCl3 content of the catalysts. The results of DSC indicated Tg amounts in the range of -35-(-36) oC for the samples. Furthermore, FeCl3 doping did not alter isotacticity index of synthesized PHs, while that DNBP increased its amount significantly

کلیدواژه ها:

Ziegler Natta catalysts ، 1-hexene polymerization ، active centers ، tacticity