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Polymer Bulletin

, Volume 35, Issue 3, pp 245–250 | Cite as

Novel polymerization of divinyl monomer to polyester catalyzed with organocobaloxime

  • Bunichiro Yamada
  • Kenji Toda
  • Shuzo Aoki
Article

Abstract

The polymerization of ethylene bis(α-ethylacrylate) to polyester was catalyzed with benzyl(bisdimethylglyoximato)(pyridine)cobalt(III). Although the α-ethylacrylic ester does not radically homopolymerize, radical addition to the carbon-carbon double bond yields the corresponding radical. This radical readily reacts with the cobalt(II) complex involved to form a carbon-cobalt bond. Dissociation of the generated bond accompanying fast β-hydrogen elimination results in a new carbon-carbon double bond and the cobalt hydride which rapidly adds to the ethylacrylate moiety to form a carbon radical which may react with the cobalt(II) complex. Through the sequence of these reactions, the novel polyester linkage was expected to be formed. Actually, the cobaloxime catalyzed reaction competed with radical propagation, and the polymer consisted of the polyester linkage (32%) and the consecutive ethylacrylate units with two types of unsaturated pendant groups (68%).

Keywords

Ester Cobalt Pyridine Hydride Benzyl 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • Bunichiro Yamada
    • 1
  • Kenji Toda
    • 1
  • Shuzo Aoki
    • 1
  1. 1.Material Chemistry Laboratory and Department of Applied Chemistry, Faculty of EngineeringOsaka City UniversityOsakaJapan

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