Asymmetric bis-salicylaldiminato binuclear titanium complexes for ethylene polymerization and copolymerization

Abstract

Polyolefins with high molecular weight and broad molecular weight distribution have attracted great attention due to their ease of processing and wide applications. In this paper, methylene-bridged asymmetric disalicylaldimine ligands...

Binuclear Ti(IV) complex with new compartmental ligand 2,6‐(bis‐CF3‐carbinol)‐4‐tert‐butylphenol as precatalysts for ethylene polymerization and its copolymerization with propylene and 5‐ethylidene‐norbornene

“…[1,2] Some recent examples of successful application of binuclear titanium complexes for ethylene (co)polymerization are given in previous studies. [3][4][5][6][7] It was previously shown that binuclear and hexanuclear titanium complexes stabilized by a tetradentate derivative of 2-hydroxymethylphenol showed significantly higher catalytic activity and thermal stability in ethylene polymerization in comparison to mononuclear analogue. [8,9] One of the most important factors in the design of binuclear and polynuclear olefin polymerization precatalysts is the distance between the metal centers.…”

“…[ 1,2 ] Some recent examples of successful application of binuclear titanium complexes for ethylene (co)polymerization are given in previous studies. [ 3–7 ]…”