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Peculiarities of inhibition of polymerization of ethylene with Ziegler-Natta catalysts by carbon monoxide

✍ Scribed by Ė. A. Grigorjan; Ch. R. Gjulumjan; G. N. Menčikova

Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
299 KB
Volume
35
Category
Article
ISSN
0323-7648

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✦ Synopsis

Besonderheiten der Inhibierung der Polymerisation von Ethylen an Ziegler-Natta-Katalysatoren durch Kohlenmonoxid

Die inhibierende Wirkung von Kohlcnmonoxid auf die mit Cp,TiCI,/AI(CH3),C1 bzw. mit VCI,/Al(C,H,),CI katalysierte Ethylenpolymerisation wurde untersucht. Polymerisa tionsgeschwindigkeit und Molmasse des Polymers verringern sich mit wachsender Kohlenmonoxidkonzentration. Die Rela tionec zwischen der Zerfallskonstanten der aktiven Zentren und der Geschwindigkeitskonstante des Kettcnwachstums wurden bestimmt.

Peculiarities of inhibition of polymerization of ethylene with Ziegler-Natta catalysts by carbon monoxide

The inhibiting action of carbon monoxide to ethylene polymerization with the catalytic systems Cp,TiCI,/AI(CH,),CI and VC14/A41(C2H5)2Cl has been studied. Both the polymerization rate and molecular weight of the polymers obtained were found t o decrease with increasing concentration of carbon monoxide. The values of the relationship between the decay constant of the active sites and the propagation rate constant was determined. Cp,Ti+. CO) Cp,Ti+-C-CH, I II 3 Acta Polymer., Bd. 35. Xr. 1

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