HIGH TEMPERATURE POLYMERS FROM 1,3-DIPOLAR ADDITION REACTIONS

Abstract

Methods were sought for the synthesis of thermally stable, oil resistant elastomers based on chains containing aromatic heterocyclic rings. Three 1,3-dipole presursors, the sydnone, the hydrazide chloride, and the tetrazole systems were studied in terms of their usefulness as monomers for 1,3- dipolar addition reactions. Of the three, only the tetrazoles show promise as useful monomers. A series of polymers which possessed moderate viscosities, high thermal stabilities, and high polarity was generated via the 1,3-doplar addition reaction. In general, the polymers showed high second-order transition temperatures and efforts to decrease the transition temperature by incorporating flexible linkages into the polymer were unsuccessful. Methods of synthesis and characterization of monomers, model compounds, and polymers are described.

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Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1968
Accession Number
AD0837558

Entities

People

  • F. W. Harris
  • J. K. Stille
  • L. D. Gotter
  • M. A. Bedford

Organizations

  • University of Iowa

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Acetylenes
  • Alkynes
  • Amino Acids
  • Carbon Dioxide
  • Chemical Synthesis
  • Chemistry
  • Molecular Weight
  • Organic Chemistry
  • Physical Properties
  • Plastic Explosives
  • Polymer Chemistry
  • Polymers
  • Thermal Stability
  • Transition Temperature

Fields of Study

  • Chemistry

Readers

  • Materials Science and Engineering.
  • Organic Chemistry
  • Polymer Science and Engineering.