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Unraveling the mechanism of polymerisation with the Phillips catalyst
journal contributionposted on 2023-05-17, 04:42 authored by McGuinness, DS, Noel DaviesNoel Davies, Henry HorneHenry Horne, Ivanov, I
The mechanism of polymer chain growth at the Phillips catalyst has been studied, with the three prevailing mechanistic proposals, the Cosee−Arlman, Green−Rooney, and metallacycle mechanisms, considered. Through analysis of low molecular weight oligomers/polymers formed during ethylene/á-olefin copolymerization with labeled monomers, it is shown that the isotopomer distribution is inconsistent with a metallacycle mechanism. Further analysis of polymer formed by copolymerization of labeled ethylene was used to rule out a Green−Rooney mechanism. The results support the notion of chain growth via a Cossee−Arlman process.
Department/SchoolSchool of Natural Sciences
PublisherAmer Chemical Soc
Place of publication1155 16Th St, Nw, Washington, USA, Dc, 20036
Rights statementCopyright © 2010 American Chemical Society