POLYMERIZATION OF ETHYLENE AND 1-HEXENE WITH CP(2)ZRCL(2)-METHYLALUMINOXANE CATALYST IN A HEAT-BALANCE REACTION CALORIMETER

Jari Koivumäki, Mikko Lahti, Jukka V. Seppälä

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    A heat balance reaction calorimeter was used to obtain information about the typical process parameters such as viscosity and heat transfer properties in polymerizations carried out with Cp2ZrCl2-methylaluminoxane catalyst. The rate enhancement upon comonomer addition was of particular interest. The viscosity of the reaction mixture was found to increase dramatically during the homopolymerization of ethylene but to increase only a little in the copolymerization of ethylene and 1-hexene even though the final slurry concentration was six times as high as in the homopolymerization. The explanation offered for this unexpected result is the much smaller particle size in the copolymerization. In part, this might also explain the higher activity in the copolymerization.

    Original languageEnglish
    Pages (from-to)117-125
    Number of pages9
    JournalAngewandte Makromolekulare Chemie
    Volume221
    Issue number1
    DOIs
    Publication statusPublished - Oct 1994
    MoE publication typeA1 Journal article-refereed

    Keywords

    • ISOTHERMAL REACTION CALORIMETERS
    • PRECIPITATION POLYMERIZATION
    • ACRYLIC-ACID

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