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The relative reactivities of cyclo-butene, -pentene, -hexene, -heptene, -octene(cis), cis- and trans-butene-2 have been compared in the copolymerization with MAn. The reactivity showed a minimum at cyclohexene, with the higher members having slightly higher reactivities and the lower members having markedly higher reativites than cyclohexene. cis-Butene-2 was found to be twice as reactive as the trans-isomer. These facts have been explained by a combination of the effects of the strain energy of olefins and of steric hindrance. The kinetics of the copolymerization of cyclopentene and MAn was studied at 60°C in benzene,, the overall rate being expressed by: Rp=k[I]0.7[M1]1.5 when [M1]=[M2] k=5.83×1012e−24.2kcal⁄RT
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Murahashi et al. (1965) studied this question.
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