Ethylene/1-Octene Copolymerization By Fluorinated Bis(Phenoxyimine)Titanium Complex-MAO System

A series of ethylene/1-octene copolymers were synthesized under varied conditions of polymerization using fluorinated bis(phenoxyimine)titanium complex upon activation with methylaluminoxane(MAO). The activity of catalyst reaches as high as 3498 kg•mol^-1(Ti)•h^-1. The incorporation ratios of 1-octene, melting points, and molecular weights of the copolymers were characterized. The results show that the incorporation ratio of 1-octene can be up to 62.8wt%. As the content of 1-octene in the copolymer increases, the melting point decreases. ¹³C NMR spectra of copolymers with different 1-octene contents were compared, which afford explicit information of the copolymers’ structure.