Multicentered self-immobilized ethylene polymerization catalysts based on functionalized titanium halide salicylaldiminate complexes for the synthesis of ultra-high-molecular-weight polyethylene

Ivancheva, N. I.; Khaikin, S. Ya.; Sviridova, Elena Viktorovna; Fedorov, S. P.; Sanieva, D. V.; Molev, O. V.; Oleinik, I. V.; Ivanchev, S. S.

doi:10.1134/s1070427212090170

Cited by 12 publications

(2 citation statements)

References 5 publications

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“…To the best of our knowledge, there are only a few publications on synthesizing FI titanium alkoxide for bulk polymerization and/or other applications. It has also been noted that alkoxide‐bearing catalysts exhibit high activity and selectivity in ring‐ opening polymerization than their chloride and methyl group‐bearing complexes [35–39] . In this contribution we report on the synthesis, structural characterization of FI alkoxide catalysts and their applications in olefin and ring opening polymerization.…”

Section: Introductionmentioning

confidence: 93%

“…It has also been noted that alkoxide-bearing catalysts exhibit high activity and selectivity in ring-opening polymerization than their chloride and methyl group-bearing complexes. [35][36][37][38][39] In this contribution we report on the synthesis, structural characterization of FI alkoxide catalysts and their applications in olefin and ring opening polymerization.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, Structural Characterization of Substituted Phenoxyimine Based Ti(IV) Complexes for Ring Opening Polymerization and DFT Studies

Gurubasavaraj,

Sajjan,

Roesky

et al. 2024

ChemistrySelect

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A series of 4 new titanium complexes bearing phenoxyimine ligands that differ in their steric and electronic properties have been synthesized and investigated for the polymerization of ethylene and rac‐lactide. X‐ray crystal structures of these catalysts reveal compounds 1–3 exhibit distorted octahedral geometry while complex 4 shows distorted trigonal bipyramidal. The substituents on the phenoxyimine framework have a profound influence on the catalytic activities of these compounds in the polymerization reactions. All four complexes afforded polylactide with a heterotactic bias in ring opening polymerization of rac‐lactide. In addition to this, density functional theory calculations using (B3LYP) with the 6‐311++G (d, p) basis set and no constraints were used while doing geometry optimizations and compared with experimental results. Hirshfeld surface analysis, MEP and Mulliken charge also reported an unexpected relationship between the nitrogen, oxygen on the ligands, titanium isopropoxide, and good relation between the experimental findings.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Synthesis, Structural Characterization of Substituted Phenoxyimine Based Ti(IV) Complexes for Ring Opening Polymerization and DFT Studies

Gurubasavaraj,

Sajjan,

Roesky

et al. 2024

ChemistrySelect

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Highly active titanium(IV) dichloride FI catalysts bearing a diallylamino group for the synthesis of disentangled UHMWPE

Oleynik

Shundrina

2020

Polymers for Advanced Techs

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A family of 16 salicylaldarylimine titanium(IV) dichloride complexes bearing diallylamino group, namely {2‐[3‐ or 4‐(CH2CHCH2)2NC6H4NCH]‐6‐R1‐4‐R2‐C6H2O}2TiCl2 (R1 = t‐Bu, CMe2(Ph); R2 = H, Me, OMe, t‐Bu) have been used for polymerization of ethylene in the presence of methylaluminoxane. The effects of reaction conditions on the polymerization were examined in detail. All the pre‐catalyst are highly active (up to 14.0 × 106 g(PE) mol(Ti)−1 −1 h−1) for ethylene polymerization at 30°С to 60°С with the activities and MM correlating with the R1‐substituent type and position of NAll2‐group: CMe2(Ph) > t‐Bu and meta‐NAll2 > para‐NAll2 for any R2. Highly linear polyethylenes (Tm's as high as 141.0°С) can be obtained with high molecular weights in the range 0.70 to 4.10 × 106 g mol−1 with disentangled morphology, suitable for technologically more advanced and greeny way to produce high‐modulus high‐strength fibers of ultrahigh molecular weight polyethylene via solid‐state (solvent‐free) deformation processing.

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Post-metallocene catalysts for the synthesis of ultrahigh molecular weight polyethylene: Recent advances

Antonov

Bryliakov

2021

European Polymer Journal

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Multicentered self-immobilized ethylene polymerization catalysts based on functionalized titanium halide salicylaldiminate complexes for the synthesis of ultra-high-molecular-weight polyethylene

Cited by 12 publications

References 5 publications

Synthesis, Structural Characterization of Substituted Phenoxyimine Based Ti(IV) Complexes for Ring Opening Polymerization and DFT Studies

Synthesis, Structural Characterization of Substituted Phenoxyimine Based Ti(IV) Complexes for Ring Opening Polymerization and DFT Studies

Highly active titanium(IV) dichloride FI catalysts bearing a diallylamino group for the synthesis of disentangled UHMWPE

Post-metallocene catalysts for the synthesis of ultrahigh molecular weight polyethylene: Recent advances

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