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Recent progress in heterogeneous Ziegler‐Natta catalysts
Author(s) -
Soga Kazuo
Publication year - 1993
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19930660106
Subject(s) - natta , propene , catalysis , ziegler–natta catalyst , polymerization , ethylene , olefin fiber , copolymer , olefin polymerization , materials science , polymer science , polymer chemistry , chemical engineering , chemistry , organic chemistry , polymer , engineering
This paper summarizes the results on regio‐ and stereochemical control of heterogeneous Ziegler‐Natta catalysts which we have obtained for the last several years. Convenient converting methods of active species from aspecific into isospecific are first shown with the use of a completely aspecific catalyst. Effects of catalyst isospecificity on the polymerization of various olefins as well as olefin copolymerizations are then described in some detail. Finnaly, the preparation method of Ti‐based regioirregular catalyst and its application to ethylene‐propene copolymerization are reported in brief.