This paper describes ethylene polymerization using a number of metallocene and aluminoxane catalyst systems, and methylaluminoxane Cp 2 MR 2 [M \ Zr, W, Nb ; R \ Cl, Two types of methylaluminoxane, MAO (1) CH 3 ]. and MAO (2), were used as cocatalysts. The polymerization activities of the complexes
Stereospecific polymerization by metallocene/aluminoxane catalysts
β Scribed by W. Kaminsky; A. Bark; R. Steiger
- Publisher
- Elsevier Science
- Year
- 1992
- Weight
- 702 KB
- Volume
- 74
- Category
- Article
- ISSN
- 0304-5102
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The figure shows the general structure of the C 1 -symmetric zirconocenes investigated in this work. We would like to apologize for any inconvenience this mistake may have caused.
## Abstract **Summary:** Isotactic polybutenes of variable isotacticity and melting points of form I in the range 100β125βΒ°C have been prepared with both __C__~2~β and __C__~1~βsymmetric zirconocenes. The __C__~1~βsymmetric zirconocenes bearing the bilateral symmetric 2,5βdimethylβ7__H__βcyclopenta