Understanding the Roles of Triethylaluminum in Phosphinimide-Supported Titanium Catalyst Systems for Ethylene Polymerization

2019 ◽  
Vol 38 (9) ◽  
pp. 2150-2155 ◽  
Author(s):  
Jared L. Barr ◽  
Amit Kumar ◽  
Davide Lionetti ◽  
Carlos A. Cruz ◽  
James D. Blakemore
Keyword(s):  
Ethylene Polymerization ◽  
Titanium Catalyst ◽  
Catalyst Systems

scholarly journals NMR and EPR trapping of the active species in the ethylene polymerization and trimerization catalyst systems

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
I.E. Soshnikov ◽  
N.V. Semikolenova ◽  
A.A. Antonov ◽  
K.P. Bryliakov ◽  
V.A. Zakharov ◽  
...  
Keyword(s):  
Epr Spectroscopy ◽  
Ethylene Polymerization ◽  
Catalyst Deactivation ◽  
Active Species ◽  
Ion Pair ◽  
Polymerization Catalysts ◽  
Ethylene Trimerization ◽  
Catalyst Systems

AbstractIn this work, previously undetected intermediates of several practically promising catalyst systems for ethylene polymerization and trimerization are discussed. In particular, the activation of ethylene polymerization catalysts (1) LNiCl2 (L = 2,4,6-trimethyl- (N-5,6,7-trihydroquinolin-8-ylidene)phenylamine) with AlEt2Cl and AlMe2Cl, (2) activation of bis(imino)pyridine vanadium(III) chloride L1VIIICl3 (L1 = 2,6-(ArN=CMe)2C5H3N, Ar = 2,6-iPr2C6H3; 2,6-Me2C6H3; 2,4,6-Me3C6H2; 3,5- F2C6H3) with AlMe3/[Ph3C]+[B(C6F5)]4¯ and MAO, and (3) selective ethylene trimerization catalyst (FI)TiCl3 (FI = phenoxyimine ligand with an additional aryl-OCH3 donor) with MAO have been assessed by NMR and EPR spectroscopy. The nature of ion-pair intermediates – the closest precursors of the propagating species – has been established, and the major catalyst deactivation pathways are discussed.

Superactive titanium catalyst supported on MgCI2(THF)2 for ethylene polymerization

Polimery ◽  
1989 ◽  
Vol 34 (06/07) ◽  
pp. 271-274
Author(s):  
MARIA NOWAKOWSKA ◽  
KRZYSZTOF SZCZEGOT ◽  
BERNARDA SKLORZ
Keyword(s):  
Ethylene Polymerization ◽  
Titanium Catalyst

Bimetallic magnesium supported titanium catalyst for ethylene polymerization

Polimery ◽  
2001 ◽  
Vol 46 (02) ◽  
pp. 115-119 ◽  
Author(s):  
WIOLETTA OCHEDZAN-SIODLAK ◽  
MARIA NOWAKOWSKA ◽  
BIBIANNA NOWAK
Keyword(s):  
Ethylene Polymerization ◽  
Titanium Catalyst

Soluble magnesium and titanium catalyst components for ethylene polymerization

1985 ◽  
Vol 23 (12) ◽  
pp. 3069-3080 ◽  
Author(s):  
Takefumi Yano ◽  
Shigeru Ikai ◽  
Katsutoshi Washio
Keyword(s):  
Ethylene Polymerization ◽  
Titanium Catalyst
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