Co- and terpolymerization of ethylene with 1-butene and 1-decene using Cp2ZrCl2 metallocene catalyst

J. V. Seppälä*, J. Koivumäki, X. Liu

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    40 Citations (Scopus)

    Abstract

    Copolymerizations of ethylene/1‐butene, and ethylene/1‐decene and terpolymerization of ethylene/1‐butene/1‐decene were carried out in n‐heptane with various concentrations of comonomer in the feed. Cp2ZrCl2‐methylaluminoxane (MAO) was used as catalyst. When comonomers were added into the ethylene polymerization, the activity of the catalyst increased significantly and continued to do so as the concentration of the comonomer was increased. At the same time as the comonomer concentration and catalyst activity increased, the molecular weight and crystallinity of the polymers decreased. An important reason for the activity enhancement may, therefore, be that the comonomer takes part in the activation of catalytic centers, decreasing the activation energy required for monomer to insert into the active centers. Use of Cp2ZrCl2‐MAO catalyst allowed the preparation of ethylene/1‐decene copolymers containing 20 wt % of 1‐decene. © 1993 John Wiley & Sons, Inc.
    Original languageEnglish
    Pages (from-to)3447-3452
    Number of pages6
    JournalJournal of Polymer Science Part A: Polymer Chemistry
    Volume31
    Issue number13
    DOIs
    Publication statusPublished - Dec 1993
    MoE publication typeA1 Journal article-refereed

    Keywords

    • copolymerization
    • metallocene catalyst
    • olefins
    • terpolymerization

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