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Preparation of branched polyethene using a soluble zirconocene catalyst
Author(s) -
Yuan Youling,
Wang L i,
Feng Linxian
Publication year - 2000
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 - 10.1002/1097-0126(200011)49:11<1289::aid-pi474>3.0.co;2-z
Subject(s) - polymerization , polyethylene , catalysis , methylaluminoxane , post metallocene catalyst , metallocene , polymer , polymer chemistry , materials science , kinetics , reaction mechanism , chemical engineering , chemistry , organic chemistry , composite material , engineering , physics , quantum mechanics
[Me 2 C(Cp) (Ind)]ZrCl 2 metallocene catalyst has been prepared and employed in a study of ethene polymerization in the presence of the cocatalyst methylaluminoxane. C 1 and C 2 signals are detected in the 13 C NMR spectra of the resultant polymers; this reveals that the resultant polymer is a branched polyethene (polyethylene). The influence of polymerization temperature, catalyst concentration and [Al]/[Zr] ratio on catalytic activities and polymerization kinetics is investigated. A plausible mechanism for forming branched polyethene is suggested. © 2000 Society of Chemical Industry