54293-20-8Relevant academic research and scientific papers
Novel titanium (IV) complexes with 1,2-diolate ligands: Synthesis, structure and catalytic activities in ultra-high molecular weight polyethylene production
Tuskaev, Vladislav A.,Gagieva, Svetlana Ch,Kurmaev, Dmitrii A.,Khrustalev, Victor N.,Dorovatovskii, Pavel V.,Mikhaylik, Elena S.,Golubev, Evgenii K.,Buzin, Mikhail I.,Zubkevich, Sergey V.,Nikiforova, Galina G.,Vasil'ev, Viktor G.,Bulychev, Boris M.,Magomedov, Kasim F.
, p. 85 - 91 (2018/10/21)
A series of titanium (IV) complexes 3a-f stabilized by 1,2-diolate ligands 2 a-e have been synthesized. Structures of complexes 3d and 3e have been determined by X-ray diffraction. Titanium atoms in these complexes have a distorted square-pyramidal environment. All resulting complexes are highly active in ethylene polymerization in the presence of {3Et2AlCl + MgBu2} or {1.5Et3Al2Cl3 + MgBu2} binary co-catalysts. In the latter case, higher molecular weights of UHMWPE samples (up to 7.7 106) are achieved. Obtained polymers are suitable for the modern processing methods – the solvent-free solid state formation of super high-strength (over 2.0 – 2.8 GPa) and high-modulus (up to 145 GPa) oriented film tapes.
