Propene homo- and copolymerization using homogeneous and supported metallocene catalysts based on Me2Si(2-Me-Benz[e]lnd)2ZrCl2
✍ Scribed by Stephan Jüngling; Sebastian Koltzenburg; Rolf Mülhaupt
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 368 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0887-624X
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✦ Synopsis
The isoselective propene polymerization using the supported catalyst SiO 2 /MAO/ Me 2 Si(2-Me-Benz[e]Ind) 2 ZrCl 2 /AlR 3 was investigated and compared with propene polymerization using the corresponding homogeneous catalyst system. The influence of propene concentration, polymerization medium, temperature, comonomer, and external aluminium alkyls on polymerization kinetics and polypropene properties such as molecular mass, stereo-and regioselectivity, morphology, and bulk density was studied.
📜 SIMILAR VOLUMES
Ethene was copolymerized with 1-octene using homogeneous MAO-activated rac-Me 2 Si(2-MeBenz[e]Ind) 2 ZrCl 2 at constant ethene concentration with temperature varying between 0 and 60ЊC to determine a temperature dependence of copolymerization parameters. At constant 1-octene and ethene concentration
## Abstract Summary: Me~2~Si(Ind)~2~ZrCl~2~ was in situ immobilized onto SMAO and used for ethylene and propylene polymerization in the presence of TEA or TIBA as cocatalyst. The catalytic system Me~2~Si(Ind)~2~ZrCl~2~/SMAO exhibited different behavior depending on the amount and nature of the alky
## Abstract Propene was polymerised at high temperatures (up to 90 °C) using __rac__‐[Me~2~Si(2‐Me‐4‐(__α__‐naphthyl)‐1‐Ind)~2~]ZrCl~2~/MAO as the catalytic system. The increasing deactivation reaction rate of the catalyst for polymerisations above 60 °C was less for a silica supported catalyst com