Polymer and Materials Science
Wiley InterScience Backfile Collection 1832-2000
Chemistry and Pharmacology
Polymerization of 3,5,5-trimethyl-1-hexene (TM1H) with TiCI3 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 TiCI3-(i-C4H9)3AI 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.
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