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EnglishCopolymns. of propene and buta-1,3-diene performed in the presence of rac-[CH2(3-tert-butyl-1-indenyl)2]ZrCl2 and methylaluminoxane (MAO) have been investigated. Buta-1,3-diene gives prevailingly primary coordination to the metal, producing overall 1,2-units. Cyclopropane and cyclopentane rings, although in low amts., are also obtained. The presence of butadiene would be responsible for some regio-irregular 2,1-inserted propene units, which at high temps. give rearrangement to 3,1 units.
| Titolo: | Copolymerization of propene and 1,3-butadiene in the presence of highly hindered C2 - symmetric zirconocene based catalyst | |
| Autori: | ||
| Data di pubblicazione: | 2004 | |
| Rivista: | ||
| Abstract: | Copolymns. of propene and buta-1,3-diene performed in the presence of rac-[CH2(3-tert-butyl-1-indenyl)2]ZrCl2 and methylaluminoxane (MAO) have been investigated. Buta-1,3-diene gives prevailingly primary coordination to the metal, producing overall 1,2-units. Cyclopropane and cyclopentane rings, although in low amts., are also obtained. The presence of butadiene would be responsible for some regio-irregular 2,1-inserted propene units, which at high temps. give rearrangement to 3,1 units. | |
| Handle: | http://hdl.handle.net/11386/1003105 | |
| Appare nelle tipologie: | 1.1.2 Articolo su rivista con ISSN |
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