Effects of external Lewis base on the performance of MgCl2supported catalysts in propylene polymerization
β Scribed by C. B. Yang; C. C. Hsu
- Publisher
- Springer
- Year
- 1993
- Tongue
- English
- Weight
- 297 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0170-0839
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## Abstract ^13^C NMR analysis of poly(propylene) fractions of different tacticity, obtained using a catalyst system of type MgCl~2~/TiCl~4~/diisobutyl phthalate β AlEt~3~ β diether, has provided further evidence that the active species in this system are similar to those in which the ether is used
The effects of triethers as internal donors on the activity and stereoselectivity of MgCl 2 -supported Ziegler-Natta type catalysts in the propylene polymerization were studied. In particular, we prepared and fully characterized some procatalysts of the type d-MgCl 2 /ID/TiCl 4 , where ID are intern