A. Mizuno, H. Kawachi
1992
Citations
0
Influential Citations
3
Citations
Journal
Polymer
Abstract
Abstract The structures of three poly(4-methyl-1-pentene) samples prepared with an AlCl 3 catalyst in C 2 H 5 Cl solvent at −78, −50 and +5°C were studied by 13 C nuclear magnetic resonance spectroscopy. Surprisingly, no detectable amount of the 1,2-unit was observed in these three polymers, meaning that the isomerization reaction takes place much faster than the propagation reaction even at +5°C. The four structural units previously known were confirmed in this work. In addition, a new structural unit, which implies successive hydride, methide and hydride shifts, was found.