Studies on highly active coordination catalysts for polymerization of α-olefins: 2. Thermal investigations of the support system anhydrous magnesium chloride-ethyl benzoate

The interaction between anhydrous MgCl 2 and ethyl benzoate (EB) involves a two-step exothermic process. The thermal effect indicates a rapid first stage attributed to the adsorption of EB on the surface of MgCl 2 followed by a considerably slower second stage of the complex formation. The amount of...

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Bibliographic Details
Published in:Polymer (Guilford) 1981-01, Vol.22 (6), p.818-821
Main Authors: Keszler, B., Gröbler, A., Takács, E., Simon, A.
Format: Article
Language:English
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Summary:The interaction between anhydrous MgCl 2 and ethyl benzoate (EB) involves a two-step exothermic process. The thermal effect indicates a rapid first stage attributed to the adsorption of EB on the surface of MgCl 2 followed by a considerably slower second stage of the complex formation. The amount of EB bonded in the complex increases with increase in the molar ratio of EB to MgCl 2, temperature, and reaction time. During the thermal decomposition of this system, up to its boiling point unreacted or adsorbed EB escapes, then decomposition of the complex takes place resulting in evaporation of the bonded EB. The reaction between EB and MgCl 2 is accompanied by a dilation.
ISSN:0032-3861
1873-2291
DOI:10.1016/0032-3861(81)90022-7