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{Cyclopentadienyl/Fluorenyl}‐Group 4 ansa ‐Metallocene Catalysts for Production of Tailor‐Made Polyolefins
Author(s) -
Kirillov Evgueni,
Carpentier JeanFrançois
Publication year - 2021
Publication title -
the chemical record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.61
H-Index - 78
eISSN - 1528-0691
pISSN - 1527-8999
DOI - 10.1002/tcr.202000142
Subject(s) - cyclopentadienyl complex , metallocene , polymerization , materials science , catalysis , monomer , polymer , polymer chemistry , organic chemistry , chemistry , composite material
Abstract The development of new metallocene‐based polymerization catalysts and innovative processes derived thereof still constitutes a challenge for the manufacturing of polyolefinic materials with tailored properties (e. g. particular microstructure or topology, ultra‐high molecular weight, high melting transition, and their combinations) for contemporary commercial applications. This personal account summarizes our continuing endeavors to advance the family of industry‐relevant stereoselective propylene polymerization catalysts based on C 1 ‐symmetric group 4 ansa ‐metallocenes incorporating multi‐substituted fluorenyl−cyclopentadienyl {Cp/Flu} ligands. Within the framework of this project, valuable structural and catalytic data, harvested both for neutral metallocenes and for metallocenium ion‐pairs, have been used for rational design of more efficient catalytic systems, reluctant towards side reactions, and for providing new stereoregular value‐added polymer materials.