Polymerization of cyclopentene, 3‐methylcyclopentene, and 3‐methylcyclohexene

J. Boor, E. A. Youngman, M. Dimbat

doi:10.1002/macp.1966.020900103

Polymerization of cyclopentene, 3‐methylcyclopentene, and 3‐methylcyclohexene

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書誌事項

公開日: 1966-01-10

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http://onlinelibrary.wiley.com/termsAndConditions#vor

DOI

10.1002/macp.1966.020900103

公開者: Wiley

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説明

<jats:title>Abstract</jats:title><jats:p>The cycloolefins cyclopentene, 3‐methylcyclopentene, and 3‐methylcyclohexene have been polymerized. The polymerization rates were very low. Depending on the particular monomer, ZIEGLER and/or cationic catalysts were effective. Cyclopentene polymerizes both by double bond opening (producing enchained cyclopentane rings) and by ring opening to give <jats:italic>cis</jats:italic> and <jats:italic>trans</jats:italic> polypentenamers. The resulting polymers are partially crystalline and have birefringence melting points between 120 and 150°C. The 3‐methylcyclopentene and 3‐methylcyclohexene monomers polymerize (at least partly) by 1,3‐addition following a 3,2‐hydride shift. The 3‐methylcyclohexene polymers are also partly crystalline and have birefringence melting points between 200 and 250°C. Little ring‐opening polymerization of the methylcycloolefins occurs. Polymerization mechanisms are discussed.</jats:p>