The kinetics of ethene and propene polymerization at 20 -60 8C in the presence of the homogeneous catalyst system rac-Me 2 Si(2-methyl-4-phenyl-1-indenyl) 2 ZrCl 2 /methylaluminoxane was investigated by means of stopped-flow techniques. The specific rate of chain propagation, measured at the very sh
Copolymerization of ethene and propene in liquid propene with MgCl2/TiCl4, VOCl3 and Cp2ZrCl2 catalyst systems—A comparison of products
✍ Scribed by Jari Koivumäki; Jukka V. Seppälä
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 319 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0014-3057
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✦ Synopsis
Ethene was copolymerized in liquid propene with a high activity heterogeneous MgCI2/TiCI 4triethytaluminium catalyst and with homogeneous VOCl3-diethylaluminiumchloride and Cp2ZrCl2-methylaluminoxane catalysts to study the effect of the catalyst system on the properties of the products. The titanium catalyst gave crystallizable ethene blockies at high ethene contents and the zirconium catalyst gave the most random distribution of the monomers. The differences in the properties of the polymers were not so great as expected.
📜 SIMILAR VOLUMES
Several kinds of MgC12-supported half titanocene (XTiCl~; X = cyclopentadienyl, pentamethylcyclopentadienyl, indenyl, and heptamethylindenyl) catalysts were prepared and applied to propene polymerization using Al(i-Bu)~as cocatalyst. It was confirmed from the catalyst analysis that the ligand (X) is