Highly active Ziegler–Natta catalyst for propylene polymerization
✍ Scribed by S. Abedi; M. Daftari-Besheli; S. Shafiei
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 228 KB
- Volume
- 97
- Category
- Article
- ISSN
- 0021-8995
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📜 SIMILAR VOLUMES
The polymerization of propylene using a mixture of racemic metallocenes and Ziegler-Natta catalysts was investigated. The polypropylene was obtained as a mixture of a fine powder and beads, with the powder being absorbed partially on the beads. The relative amount of the powder can be controlled by
Grignard reagent PhMgCl was added during the preparation of the catalyst system MgCl 2 /di-n-butyl phthalate (DNBP)/TiCl 4 {AlEt 3 /diphenyl dimethoxyl silane (DPDMS) to improve its performance. It was found that PhMgCl could enhance both the activity of the catalyst and the isotacticity of the prod