Homo- and co-polymerization of ethylene with highly active Ti/Mg bimetallic complexes
β Scribed by Ii Kim; Seong Ihl Woo
- Book ID
- 104703432
- Publisher
- Springer
- Year
- 1989
- Tongue
- English
- Weight
- 457 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0170-0839
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## Abstract Copolymerization of ethylene and 1βbutene were performed using the catalyst system TiCl~3~ Β· 1/3 AlCl~3~/MgCl~2~/THF with or without partial activation by AlEt~2~Cl. The catalyst and the copolymers were characterized by IR spectroscopy. The experimental results reveal that partial activ
The determination of active centres concentration, [C \* 1, by the 14C0 radio-labelling technique in ethylene homopolymerization and copolymerization with I-hexene using various TiCl,/MgH, catalysts of different Ti contents and surface areas is discussed. The effects of I-hexene/ethylene, AlEt,/Ti m
Five new hetero-bimetallic metallocene complexes were synthesized by the reaction of RCpTiCl 3 and a Si-bridged zirconocene complex in refluxing toluene. They were all well characterized. These complexes activated with methylaluminoxane (MAO) are highly active catalysts for the polymerization of eth
## Abstract Polymerization of ethylene was initiated with soluble polystyrene~100~βbutadiene~3~βLi/TiCI~4~ complexes in toluene leading to block copolymers. The activity of the system was measured at a constant ratio __r__ = [Li]/[Ti] and for different concentrations in active centers and in monome