Synthesis of Imino-Enamido Hafnium and Zirconium Complexes: A New Family of Olefin Polymerization Catalysts with Ultrahigh-Molecular-Weight Capabilities

2011 ◽  
Vol 30 (6) ◽  
pp. 1695-1709 ◽  
Author(s):  
Ruth Figueroa ◽  
Robert D. Froese ◽  
Yiyong He ◽  
Jerzy Klosin ◽  
Curt N. Theriault ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Olefin Polymerization ◽  
Polymerization Catalysts ◽  
New Family ◽  
Zirconium Complexes ◽  
Ultrahigh Molecular Weight

Synthesis of Hafnium and Zirconium Imino−Amido Complexes from Bis-imine Ligands. A New Family of Olefin Polymerization Catalysts

2007 ◽  
Vol 26 (16) ◽  
pp. 3896-3899 ◽  
Author(s):  
Philip De Waele ◽  
Brian A. Jazdzewski ◽  
Jerzy Klosin ◽  
Rex E. Murray ◽  
Curt N. Theriault ◽  
...  
Keyword(s):  
Olefin Polymerization ◽  
Polymerization Catalysts ◽  
Amido Complexes ◽  
New Family ◽  
Imine Ligands

Titanium pyridyl-phosphinimide complexes — Synthesis, structure, and ethylene polymerization catalysis

2006 ◽  
Vol 84 (5) ◽  
pp. 755-761 ◽  
Author(s):  
Chad Beddie ◽  
Pingrong Wei ◽  
Douglas W Stephan
Keyword(s):  
Molecular Weight ◽  
Key Words ◽  
Ethylene Polymerization ◽  
Olefin Polymerization ◽  
Polymerization Catalysts ◽  
Pyridyl Group ◽  
Molecular Weight Distributions ◽  
Polymerization Catalysis ◽  
Weight Distributions

A series of Ti–pyridyl-phosphinimide complexes of the form Cp′TiX2[NPR2(2-CH2Py)] (Cp′ = Cp, Cp*, R = i-Pr, t-Bu, X = Cl, Me) have been prepared and characterized. These complexes generate ethylene polymerization catalysts upon activation with MAO or B(C6F5)3. The resulting polymers exhibit broad molecular weight distributions. The role of the pyridyl group is discussed in light of stoichiometric reactions of CpTiCl2[NPR2(2-CH2Py)] with B(C6F5)3.Key words: phosphinimide complexes, pyridyl-phosphinimides, olefin polymerization.

Bridged 1,2-azaborolyl zirconium complexes: Heterocyclic analogs of the ansa-zirconocene olefin polymerization catalysts

Polyhedron ◽  
2005 ◽  
Vol 24 (11) ◽  
pp. 1280-1288 ◽  
Author(s):  
Hong Yang ◽  
Xiangdong Fang ◽  
Jeff W. Kampf ◽  
Arthur J. Ashe
Keyword(s):  
Olefin Polymerization ◽  
Polymerization Catalysts ◽  
Zirconium Complexes

α-Diimine nickel complexes bearing axially bulky terphenyl and equatorially bulky dibenzobarrelene groups: synthesis, characterization and olefin polymerization studies

2020 ◽  
Vol 11 (42) ◽  
pp. 6783-6793
Author(s):  
Xiaohua Wang ◽  
Bo Dong ◽  
Qi Yang ◽  
Heng Liu ◽  
Chunyu Zhang ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Ethylene Polymerization ◽  
Olefin Polymerization ◽  
Nickel Complexes ◽  
Catalytic Activities ◽  
New Family ◽  
Ultra High Molecular Weight

A new family of asymmetric α-diimine nickel complexes bearing axially and equatorially bulky groups were synthesized successfully. They exhibited high catalytic activities for ethylene polymerization and afforded ultra-high-molecular-weight elastomeric polyethylenes.

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