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Long chain branching in ethylene polymerization using constrained geometry metallocene catalyst

✍ Scribed by Wen-jun Wang; Dajing Yan; Paul A. Charpentier; Shiping Zhu; Archie E. Hamielec; Brian G. Sayer

Book ID
102663093
Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
687 KB
Volume
199
Category
Article
ISSN
1022-1352

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## Abstract In metallocene polymerization, termination by β‐hydride elimination generates polymer chains containing unsaturated vinyl groups at their chain ends. Further polymerization of these macromonomers produces branched polymers. Material properties of the branched polymers not only depend on

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A study was made on the effects of polymerization conditions on the long-chain branching, molecular weight, and end-group types of polyethene produced with the metallocene-catalyst systems Et[Ind] 2 ZrCl 2 /MAO, Et[IndH 4 ] 2 ZrCl 2 /MAO, and (n-BuCp) 2 ZrCl 2 /MAO. Long-chain branching in the polye