In:
Macromolecular Rapid Communications, Wiley, Vol. 23, No. 18 ( 2002-12), p. 1118-1123
Abstract:
The catalytic behavior of three bis(phenoxy‐imine) group‐4 transition‐metal complexes (M = Ti, Zr, Hf), with i Bu 3 Al/Ph 3 CB(C 6 F 5 ) 4 cocatalyst systems towards propylene polymerization was investigated under atmospheric pressure at 25 °C. The Ti complex produced ultrahigh‐molecular‐weight atactic poly(propylene), whereas Zr and Hf complexes formed high‐molecular‐weight isotactic poly(propylene)s via a site‐control mechanism. The isotactic poly(propylene) obtained with the Hf complex displayed a high melting temperature of 123.8 °C. magnified image
Type of Medium:
Online Resource
ISSN:
1022-1336
,
1521-3927
DOI:
10.1002/marc.200290005
Language:
English
Publisher:
Wiley
Publication Date:
2002
detail.hit.zdb_id:
1475027-2