Study on process parameters in metallocene polymerizations, II: Heat transfer and copolymer composition: Heat transfer and copolymer composition

Mikko Lahti*, Jari Koivumäki, Jukka V. Seppälä

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    5 Citations (Scopus)

    Abstract

    Part I of this series about the determination of the typical process parameters in Et[Ind]2ZrCl2-methylaluminoxane-catalyzed polymerizations carried out with a heat balance reaction calorimeter described how viscosity and macro-scale mass transfer characteristics changed during the polymerization. Part II looks at the heat transfer properties and the copolymer compositions. The dimensionless Nusselt equation was used to calculate the reaction-side heat transfer coefficient during the polymerization. The properties of the reaction mixture changed continuously during the polymerization, which means that the dimensionless Nusselt equation needs to be modified to properly express the heat transfer properties. The copolymer compositions were estimated by combining the calorimetric method with the semibatch ethylene polymerization method. Results gathered in this way were reliable when the amount of comonomer in the copolymer exceeded 5 mol-%. © 1996 Hüthig & Wepf Verlag.
    Original languageEnglish
    Pages (from-to)155-167
    Number of pages13
    JournalAngewandte Makromolekulare Chemie
    Volume236
    Issue number4124
    DOIs
    Publication statusPublished - Mar 1996
    MoE publication typeA1 Journal article-refereed

    Keywords

    • copolymer composition
    • heat transfer
    • metallocene

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