Copolymerization of ethene with norbornene derivatives using neutral nickel catalysts

George M. Benedikt, Ed Elce, Brian L. Goodall, Heather A. Kalamarides, Lester H. McIntosh, Larry F. Rhodes, K. T. Selvy, Cecily Andes, Karl Oyler, Ayusman Sen

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115 Scopus citations

Abstract

The copolymerization of ethene with norbornene derivatives, as well as their terpolymerization with 1-alkenes, using a series of neutral, square-planar nickel complexes containing anionic P-O chelates is described. In copolymerizations, up to 50 mol % incorporation of norbornene, leading to an essentially alternating copolymer, is obtained. With norbornene derivatives bearing oxygen functionalities, the level of incorporation is lower, as are the reaction rates and polymer molecular weights. In the case of terpolymerization of ethene and norbornene with 1-alkenes, the polymer molecular Weights tend to be low because of slower monomer insertion and additional chain-transfer pathways that are available following 1-alkene insertion. For the ethene/norbornene polymers synthesized, the glass transition temperature (Tg) increases smoothly with increasing norbornene content. Solution-cast films of the polymers show good optical clarity.

Original languageEnglish (US)
Pages (from-to)8978-8988
Number of pages11
JournalMacromolecules
Volume35
Issue number24
DOIs
StatePublished - Nov 19 2002

All Science Journal Classification (ASJC) codes

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

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    Benedikt, G. M., Elce, E., Goodall, B. L., Kalamarides, H. A., McIntosh, L. H., Rhodes, L. F., Selvy, K. T., Andes, C., Oyler, K., & Sen, A. (2002). Copolymerization of ethene with norbornene derivatives using neutral nickel catalysts. Macromolecules, 35(24), 8978-8988. https://doi.org/10.1021/ma020933a