One-pot process of preparing long chain branched polypropylene using C 2-symmetric metallocene complex and a "T" reagent

J. Langston, J. Y. Dong, T. C. Chung

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33 Scopus citations

Abstract

A one-pot polymerization process to prepare isotactic polypropylene with a long chain branched structure (LCBPE) using a novel branching 'T' reagent was investigated. The effect of the p-(3-butenyl)styrene 'T' reagent and hydrogen concentration on catalyst activity and p-(3-butenyl)styrene in-corporation modes by varying reaction conditions was also studied. It was found that both branch density and branch length can be conveniently controlled by the p-(3-butenyl)-styrene 'T' reagent, higher concentration higher branch density, and lower branch length. The LCBPE polymer's molecular weight distribution stayed relatively narrow, which indicated a single site copolymerization with a clean chain transfer reaction.

Original languageEnglish (US)
Pages (from-to)5849-5853
Number of pages5
JournalMacromolecules
Volume38
Issue number14
DOIs
StatePublished - Jul 12 2005

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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