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Synthesis and polymerization studies of 1,2-dimethyleneoctafluorocyclohexane

✍ Scribed by Blomquist, A. T. ;Durandetta, Donald W. ;Robinson, Gordon B.

Book ID
104535411
Publisher
Wiley (John Wiley & Sons)
Year
1970
Tongue
English
Weight
586 KB
Volume
8
Category
Article
ISSN
0449-296X

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✦ Synopsis

Abstract

1,2‐Dimethyleneoctafluorocyclohexane has been prepared by the pyrolysis of 2‐chloro‐methyl‐1‐methyloctafluorocyclohexane. Free radicals initiate the polymerization of the diene in both bulk and emulsion systems to give a highly crystalline (mp 214–218°C) polymer that has an all‐cis 1,4‐structure. The polymer is insoluble in common laboratory solvents, but will dissolve in perfluorokerosene above 175°C and in 2,5‐dichlorobenzo‐trifluoride above 150°C. This diene is not polymerized by cationic, anionic, or Ziegler‐Natta catalysts. The diene is readily copolymerized with many common monomers to give soluble, high molecular weight polymers. Relative reactivity ratios have been measured with styrene by the Fineman and Ross method and Q–e parameters for the diene have been calculated.

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