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Highly isospecific SiO2-supported zirconocene catalyst activated by ordinary alkylaluminiums

✍ Scribed by Kazuo Soga; Hyun Joon Kim; Takeshi Shiono


Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
202 KB
Volume
15
Category
Article
ISSN
1022-1336

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πŸ“œ SIMILAR VOLUMES


Polymerization of propene with highly is
✍ Kazuo Soga; Hyun Joon Kim; Takeshi Shiono πŸ“‚ Article πŸ“… 1994 πŸ› John Wiley and Sons 🌐 English βš– 547 KB

## Abstract Several types of SiO~2~‐supported metallocene catalysts were prepared using chemically modified silica gel. Polymerization of propene was conducted with these catalysts combined with methylaluminoxane (MAO) or ordinary alkylaluminiums. Highly isotactic poly(propylene) with high molecula

Kinetic study of isospecific active site
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## Abstract The effect of various kinds of alkylaluminium on the kinetic parameters of the initial stage of propene polymerization with MgCl~2~‐supported Ziegler catalyst was studied by the stopped‐flow polymerization method. The active sites concentration ([C^\*^]) decreased drastically with the i

Propene polymerization with the MgCl2-su
✍ Kazuo Soga; Eiichi Kaji; Toshiya Uozumi πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 132 KB πŸ‘ 1 views

Several kinds of dichlorobis( b-diketonato)titanium complexes, i.e., Ti(acetylacetonato) 2 Cl 2 , Ti(1-benzoylacetonato) 2 Cl 2 , Ti(2,2,6,6-tetramethyl-3,5-heptanedionato) 2 Cl 2 and Ti(4,4,4-trifluoro-1-phenyl-1,3-butanedionato) 2 Cl 2 , were synthesized and the corresponding MgCl 2 -supported cat

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## Abstract Copolymerizations of ethylene with propene, of ethylene with 1‐hexene and of propene with 1‐hexene were carried out at 40Β°C under atmospheric pressure with SiO~2~‐, Al~2~O~3~‐ and MgCl~2~‐supported metallocene catalysts using common alkylaluminiums as cocatalyst. From a detailed analysi

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The kinetics of ethylene polymerization with TiCl,/MgCl,/SiO, has been investigated in the range of temperatures between 40 and 90Β°C and in the range of ethylene pressures between 4 and 12.4 kg/cm2. The role of MgCI, was discussed from the dependence of the Mg/Ti ratio on the catalytic activity. The