Accession Number:

AD0643548

Title:

PHOSPHONITRILIC FLUOROALKOXIDE POLYMERS,

Descriptive Note:

Corporate Author:

ENGLISH ELECTRIC CO LTD LUTON

Personal Author(s):

Report Date:

1966-09-01

Pagination or Media Count:

49.0

Abstract:

A series of fluoroalkoxy substituted trimeric phosphonitrile ring compounds has been prepared. Attempts to polymerise the hexafluoroalkoxy triphosphonitriles failed. Unsymmetrical substituted derivatives containing two different fluoroalkoxy groups have been evaluated as high temperature fluid materials. Substitution of fluoroalkoxy groups into phosphonitrilic chloride rubbery high polymer has yielded hydrolytically stable elastomers of poor thermal stability, in which considerable cross-linking is postulated. The preparation and properties of some fluoroalkyl phosphites and chlorophosphites are described. Phosphonitrile polymer formation from these materials by reaction with alkali metal azides proved impossible. Attempts to prepare bisfluoroalkoxy trichlorophosphoranes failed to yield the required materials. All attempts at the partial replacement of the chlorine atoms in phosphonitrilic chloride trimer, by fluoroalkoxy groups, gave complex isomer mixtures of varying degrees of substitution from which pure materials could not be separated. A series of diamino tetrakisfluoroalkoxytriphosphonitriles has been prepared, and the condensation polymerisation with fluorinated dihydroxy alcohols studied. The products of the condensation are in some cases elastomeric, and may lead towards a new type of potentially useful rubbery material. Author

Subject Categories:

  • Polymer Chemistry
  • Plastics
  • Elastomers and Rubber

Distribution Statement:

APPROVED FOR PUBLIC RELEASE