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Synthesis and evaluation of two new FI‐Ti catalysts for living polymerization of ethylene
Author(s) -
Guo Song,
Jie Suyun,
Fan Hong,
Weng Jianxiu,
Liu Weifeng,
Li BoGeng
Publication year - 2013
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38901
Subject(s) - polymerization , catalysis , ethylene , titanium , polymer , molar mass distribution , polymer chemistry , materials science , coordination polymerization , solution polymerization , chemistry , organic chemistry , metallurgy , composite material
Two new FI complexes, bis [ N ‐(3‐allylsalicylidene)‐pentafluoroanilinato]titanium(IV) dichloride ( AFI ) and bis [ N ‐(3‐propylsalicylidene)‐pentafluoroanilinato]titanium(IV) dichloride ( PFI ) were designed and synthesized as catalysts for living polymerization of ethylene. The two complexes were characterized by elemental analysis, spectroscopy and X‐ray single diffraction. The catalysts were evaluated in ethylene polymerization under atmospheric pressure. It was found that both catalysts exhibited high activity and good livingness. The effects of temperature and d MAO/Ti molar ratio on the polymerization behavior of AFI were studied in detail. Elevating temperature increased self‐immobilization of the AFI catalyst, which broadened the polymer molecular weight distribution. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013