PROPYLENE POLYMERIZATION WITH UNBRIDGED RAC-BIS[1-(P-TOLYL)INDENYL]DICHLORO OR MESO-BIS[1-(P-TOLYL)INDENYL]DICHLORO ZIRCONIUM METHYLALUMINOXANE CATALYST/

Authors
HAN TK YOON SC KO YS WOO BW PARK JT WOO SI
Citation
Tk. Han et al., PROPYLENE POLYMERIZATION WITH UNBRIDGED RAC-BIS[1-(P-TOLYL)INDENYL]DICHLORO OR MESO-BIS[1-(P-TOLYL)INDENYL]DICHLORO ZIRCONIUM METHYLALUMINOXANE CATALYST/, Polymer bulletin, 37(1), 1996, pp. 35-41
Citations number
15
Categorie Soggetti
Polymer Sciences
Journal title
Polymer bulletin → ACNP
ISSN journal
01700839
Volume
37
Issue
1
Year of publication
1996
Pages
35 - 41
Database
ISI
SICI code
0170-0839(1996)37:1<35:PPWUR>2.0.ZU;2-0
Abstract
A novel unbridged metallocene complex, (1-TolInd)(2)ZrCl2 (Tol = p-C6H 4CH3) was prepared. Meso-like (1-TolInd)(2)ZrCl2 afforded a syndiotact ic-dominant polypropylene having a short syndiotactic length at low te mperatures (-30 degrees C). This stereosequence is due either to a wea kly chain-end controlled or to a syndiotactic site controlled polymeri zation with site isomerization. Racemic isomer produced a completely a tactic PP even at -30 degrees C.