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Polymerization of 3,5,5‐trimethyl‐1‐hexene with Ziegler‐Natta catalysts
Author(s) -
Endo Kiyoshi,
Fujii Kazuyoshi,
Otsu Takayuki
Publication year - 1994
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1994.021950603
Subject(s) - polymerization , polymer chemistry , copolymer , isomerization , chemistry , hexene , catalysis , substituent , monomer , radical polymerization , natta , organic chemistry , polymer
Polymerization of 3,5,5‐trimethyl‐1‐hexene (TM1H) with TiCI 3 and alkylaluminium catalysts was studied. TM1H can be polymerized, but the polymerization rate is quite low due to the bulky substituent of the side chain. During the polymerization of TM1H, the isomerization of TM1H to internal olefins was observed. The overall activation energy for polymerization of TM1H was estimated to be approx. 37 kJ/mol. By adding optically active L‐menthol to the TiCI 3 ‐( i ‐C 4 H 9 ) 3 AI catalyst, a stereoelective polymerization was induced. Monomer‐isomerization copolymerization of TM1H and trans ‐2‐butene took place, giving copolymers consisting of the corresponding 1‐olefin units.