Study of the Activity Enhancement Caused by the Addition of Hydrogen in Olefin Polymerization
- 1 September 1991
- journal article
- research article
- Published by Taylor & Francis in Journal of Macromolecular Science: Part A - Chemistry
- Vol. 28 (9) , 865-873
- https://doi.org/10.1080/00222339108054064
Abstract
Propene and 1-butene polymerizations were performed using the catalyst system of MgCl2 · TiCl4 · diethylphtharate (DEP)/AIEt3/ phenyltriethoxysilane (PES). In both polymerizations, the activities were enhanced more than three times hv the hydrogen addition, while in the catalyst system not containing DEP and/or PES, the degree of the activity enhancement was decreased to about one-third of that in the above catalyst system. The results of a kinetic study on l-butene short-term polymerization suggest that the said enhancement is not due to the increase of the number of active sites.Keywords
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