Cocatalyst effects in Hf-catalysed olefin polymerization: taking well-defined Al–alkyl borate salts into account
Gaia Urciuoli, Francesco Zaccaria, Cristiano Zuccaccia, Roberta Cipullo, Peter H. M. Budzelaar, Antonio Vittoria, Christian Ehm, Alceo Macchioni, Vincenzo Busico
Abstract
with hafnocenes). Furthermore, it generally leads to high molecular weight polymers, also with catalysts enabling easy chain transfer to Al like Hf-PyAm. This suggests that AlHAl has a low tendency to form heterodinuclear adducts with the cationic active species, therefore preventing the formation of dormant sites and/or termination events by chain transfer to Al.
Topics & Concepts
CatalysisPolymerizationCationic polymerizationOlefin polymerizationPropeneAlkylChain transferChemistryPolymerBoronPolymer chemistryOlefin fiberOrganic chemistryRadical polymerizationOrganometallic Complex Synthesis and CatalysisOrganoboron and organosilicon chemistryCarbon dioxide utilization in catalysis