Observations on the rate enhancement effect with MgCl2/TiCl4 and Cp2ZrCl2 catalyst systems upon 1-Hexene addition

Jari Koivumäki, Jukka V. Seppälä

    Research output: Contribution to journalArticleScientificpeer-review

    111 Citations (Scopus)

    Abstract

    Ethene was copolymerized with 1-hexene in the presence of heterogeneous MgCl2/TiCl4 and homogeneous Cp2ZrCl2 catalysts to study the effect of 1-hexene addition on the ethene polymerization system. With both catalyst systems, 1-hexene had a rate-increasing effect. Compared with homopolymerization, the ethene consumption was increased as much as 8-fold with MgCl2/TiCl4 and 2.5 fold with Cp2ZrCl2. With Cp2ZrCl2 catalyst rate enhancement was apparent only when the polyethene was insoluble in the reaction medium. At higher temperature, where the product was soluble, there was no rate enhancement but rather a rate decrease.

    Original languageEnglish
    Pages (from-to)5535-5538
    Number of pages4
    JournalMacromolecules
    Volume26
    Issue number21
    DOIs
    Publication statusPublished - Oct 1993
    MoE publication typeA1 Journal article-refereed

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