Polymerization of propene over the MgCl2-supported tris(acetylacetonato) chromium catalyst combined with diethylaluminiumchloride

Authors
Takawaki, K Uozumi, T Kaji, E Sano, T Soga, K
Citation
K. Takawaki et al., Polymerization of propene over the MgCl2-supported tris(acetylacetonato) chromium catalyst combined with diethylaluminiumchloride, J POL SC PC, 37(6), 1999, pp. 691
Citations number
17
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
ISSN journal
0887624X → ACNP
Volume
37
Issue
6
Year of publication
1999
Database
ISI
SICI code
0887-624X(19990315)37:6<691:POPOTM>2.0.ZU;2-V
Abstract
Tris(acetylacetonato)chromium was supported on MgCl2 by an impregnation met hod. The resulting catalyst combined with AlEt2Cl(DEAC) as the cocatalyst i nitiated the propene polymerization to yield ata-rich polypropene with a fa irly high molecular weight. Addition of ethylbenzoate (EB) as an external d onor caused to increase the catalyst isospecificity to a great extent. Thus , isotactic polypropene with I,I. = 98%, [mmmm] = 97% and T-m = 165.3 degre es C was obtained under appropriate conditions.