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Stereospecific polymerization of styrene with novel half‐sandwich titanium complexes—RCpTi( o ‐MeOPhCPh 2 O)Cl 2 /methylaluminoxane
Author(s) -
Chen Qihui,
Huang Jiling
Publication year - 2006
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1955
Subject(s) - methylaluminoxane , polymerization , styrene , stereospecificity , polymer chemistry , triethylamine , materials science , catalysis , chemistry , titanium , solvent , metallocene , copolymer , organic chemistry , polymer
Two new half‐sandwich titanocene catalysts for the stereospecific polymerization of styrene, RCpTi( o ‐MeOPhCPh 2 O)Cl 2 (R = H (1); R = Me (2)), were prepared by reaction of the corresponding RCpTiCl 3 complexes with o ‐methoxyphenyldiphenylmethanol ( o ‐MeOPhCPh 2 OH) in the presence of triethylamine. Upon activation with excess methylaluminoxane (MAO), they showed high activities and high thermal stabilities for the stereospecific polymerization of styrene. The influences of polymerization temperature, Al/Ti molar ratio, solvent (aliphatic or aromatic) and time on the activity and syndiotacticity of the styrene polymerization were investigated. Copyright © 2006 Society of Chemical Industry