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High molecular weight polypropene elastomers via “dual‐side” zirconocene dichlorides
Author(s) -
Kukral Jürgen,
Rieger Bernhard
Publication year - 2002
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200201)177:1<71::aid-masy71>3.0.co;2-2
Subject(s) - tacticity , materials science , monomer , polymer chemistry , propene , polymerization , thermoplastic elastomer , copolymer , elastomer , polymer , crystallinity , dual (grammatical number) , polymer science , catalysis , chemical engineering , composite material , chemistry , organic chemistry , art , literature , engineering
A series of asymmetric ansa ‐zirconocene dichlorides were investigated in propene polymerization reactions with respect to monomer concentration and polymerization temperature. The two different coordination sides of these “dual‐side” catalysts allow a precise control of the total amount of randomly distributed isolated stereoerrors along the isotactic polymer chains leading to bulk properties which can be adjusted from flexible, semicrystalline to excellent thermoplastic elastic. The obtained homopolypropenes have a great potential to come into competition with commercialized copolymers for possible industrial applications.