Propylene polymerization with unbridged rac- or meso-bis[1-(p-tolyl)indenyl]dichloro zirconium/methylaluminoxane catalyst

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A novel unbridged metallocene complex, (1-TolInd)(2)ZrCl2 (Tol = p-C6H4CH3) was prepared. Meso-like (1-TolInd)(2)ZrCl2 afforded a syndiotactic-dominant polypropylene having a short syndiotactic length at low temperatures (-30 degrees C). This stereosequence is due either to a weakly chain-end controlled or to a syndiotactic site controlled polymerization with site isomerization. Racemic isomer produced a completely atactic PP even at -30 degrees C.
Publisher
SPRINGER VERLAG
Issue Date
1996-07
Language
English
Article Type
Article
Keywords

STEREOSELECTIVE PROPENE POLYMERIZATION; METALLOCENE METHYLALUMOXANE CATALYSTS; ALUMOXANE CATALYST; ZIRCONOCENE; DERIVATIVES; DICHLORIDE; COMPLEXES

Citation

POLYMER BULLETIN, v.37, no.1, pp.35 - 41

ISSN
0170-0839
DOI
10.1007/BF00313816
URI
http://hdl.handle.net/10203/75273
Appears in Collection
CH-Journal Papers(저널논문)CBE-Journal Papers(저널논문)
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