Synthesis and characterization of trichlorotitanium 2-(2- pyridinyliminomethyl)phenolates and their ethylene (co-)polymerization behavior

Wang, Youhong; Zhang, Wenjuan; Huang, Wei; Wang, Lin; Redshaw, Carl; Sun, Wen Hua

Abstract

The series of trichlorotitanium 2-(2-pyridinyliminomethyl)phenolates, [4,6-tBu2C6H2O-2-CHNC5R 1-4N]TiCl3 (R1-4 = H (1); R1,3,4 = H, R2 = Me (2); R1,2,4 = H, R3 = Me (3); R 2,4 = H, R1,3 = Me (4); R1,3 = H, R2 = CF3, R4 = Cl (5)), were synthesized and characterized by elemental analysis and 1H/13C NMR spectroscopy. The molecular structures of the representative complexes 2 and 4 were confirmed by single-crystal X-ray diffraction, and revealed distorted octahedral geometry at titanium. In the presence of MAO, all titanium pro-catalysts showed good activities for ethylene polymerization with good thermal stability at the optimum temperature of 50 °C. In comparison with the ethylene polymerization results, the activity observed for the co-polymerization of ethylene/1-hexene was far lower, but the polymers produced were of high molecular weight. For the co-polymerization of ethylene/1-octene, enhanced catalytic activity was observed, with 1-octene incorporation of up to 3.83 mol%. © 2011 Elsevier Ltd. All rights reserved.

Citation

Wang, Y., Zhang, W., Huang, W., Wang, L., Redshaw, C., & Sun, W. H. (2011). Synthesis and characterization of trichlorotitanium 2-(2- pyridinyliminomethyl)phenolates and their ethylene (co-)polymerization behavior. Polymer, 52(17), 3732-3737. https://doi.org/10.1016/j.polymer.2011.06.036

• Journal Article Type: Article
• Acceptance Date: Jun 19, 2011
• Online Publication Date: Jun 25, 2011
• Publication Date: Aug 3, 2011
• Deposit Date: Jun 8, 2022
• Journal: Polymer
• Print ISSN: 0032-3861
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 52
• Issue: 17
• Pages: 3732-3737
• DOI: https://doi.org/10.1016/j.polymer.2011.06.036
• Keywords: Trichlorotitanium 2-(2-pyridinyliminomethyl)phenolates; Ethylene polymerization; Co-polymerization
• Public URL: https://hull-repository.worktribe.com/output/3622407