Gas phase polymerization of ethylene with a silica-supported metallocene catalyst: influence of temperature on deactivation.

P. Roos, G.B. Meier, J.J.C. Samson, Job Jan C. Samson, G. Weickert, K.R. Westerterp

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    Ethylene was polymerized at 5 bar in a stirred powder bed reactor with silica supported rac-Me2Si[Ind]2ZrCl2/methylaluminoxane (MAO) at temperatures between 40°C and 80°C using NaCl as support bed and triethylaluminium (TEA) as a scavenger for impurities. For this fixed recipe and a given charge of catalyst. the average catalyst activity is reproducible within 10% for low temperatures. The polymerization rate and the rate of deactivation increase with increasing temperature. The deactivation could be modeled using a first order dependence with respect to the polymerization rate.
    Original languageUndefined
    Pages (from-to)319-324
    JournalMacromolecular rapid communications
    Issue number18
    Publication statusPublished - 1997


    • METIS-106232
    • IR-71358

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