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Novel titanium (IV) diolate complexes: Synthesis, structure and catalytic activities in ultra-high molecular weight polyethylene production
被引:28
作者:
Gagieva, Svetlana Ch
[1
]
Tuskaev, Vladislav A.
[1
,2
]
Fedyanin, Ivan V.
[2
]
Buzin, Mikhail I.
[2
]
Vasil'ev, Viktor G.
[2
]
Nikiforova, Galina G.
[2
]
Afanas'ev, Egor S.
[2
]
Zubkevich, Sergey V.
[1
]
Kurmaev, Dmitrii A.
[1
]
Kolosov, Nikolay A.
[1
]
Mikhaylik, Elena S.
[2
,3
]
Golubev, Evgenii K.
[2
,3
]
Sizov, Alexandr I.
[1
]
Bulychev, Boris M.
[1
]
机构:
[1] Moscow MV Lomonosov State Univ, Dept Chem, 1 Leninskie Gory, Moscow 119992, Russia
[2] Russian Acad Sci, AN Nesmeyanov Organoelement Cpds Inst, 28 Ul Vavilova, Moscow 119991, Russia
[3] Russian Acad Sci, Enikolopov Inst Synthet Polymer Mat, Profsoyuznaya Str 70, Moscow 117393, Russia
基金:
俄罗斯科学基金会;
关键词:
Ziegler-Natta polymerization;
Ultra-high molecular weight polyethylene;
Titanium;
Non-metallocene;
Diolate ligands;
ETHYLENE POLYMERIZATION;
METALLOCENE;
OLIGOMERIZATION;
CHLORIDE;
LIGANDS;
OLEFINS;
SYSTEMS;
DFT;
D O I:
10.1016/j.jorganchem.2016.11.026
中图分类号:
O61 [无机化学];
学科分类号:
070301 ;
081704 ;
摘要:
In this work we describe synthesis of new chloride and alkoxo-titanium (IV) complexes 3-7 with diol O,O-type ligands from readily available and scalable precursors. Structure of complex 6 was established by X-ray diffraction. Titanium atom adopts a tetrahedral geometry formed by three oxygen atoms of ligands and one oxygen atom of isopropoxo group. The resulting complexes 3-6 are moderately or highly active in ethylene polymerization in the presence of (3Et(2)AlCl Bu2Mg} binary co-catalyst. Obtained polymers are linear polyethylene of ultrahigh molecular weight (3.7-8.8.10(6) g/mole) with a broad molecular weight distribution. Polymers are suitable for the modern methods of polymer processing - the solventless solid state formation of super high-strength (breaking strength over 2.3 GPa) and high-modulus (elastic modulus over 150 GPa) oriented films and film tapes. (C) 2016 Elsevier B.V. All rights reserved.
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页码:89 / 95
页数:7
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