Zirconium and hafnium complexes, supported by biphenylphenol ligands, have emerged as promising catalysts at the Dow Chemical Company for a number of high temperature olefin polymerization processes. Finding utility in R&D programs and commercial product lines such as VERSIFYTM plastomers & elastomers, AFFINITYTM polyolefin plastomers, ENGAGETM polyolefin elastomers, NORDELTM IP hydrocarbon resins, and INFUSETM olefin block copolymers, their appeal is also driven, in part, by the modular nature of the ligand framework. This feature has been significantly exploited to infer dramatic changes on catalyst capability and polymer characteristics. Despite the significant progress that has been made with this family of catalysts, there is an opportunity to expand this catalyst technology to realize its full potential and address remaining challenges in solution polyolefin processes. One solution to this challenge resides in the study of biphenylphenol catalysts that utilize different metal centers. This presentation will describe the extension of this chemistry to titanium derivatives, and highlight unique structural and catalytic differences in comparisons to zirconium and hafnium analogs.

Exploring titanium biphenylphenol catalysts for ethylene-octene polymerization processes

249th National Meeting (2015)

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