A NEW METHOD FOR THE SYNTHESIS OF POLYPYRAZOLES,

Abstract

A new method was worked out for the synthesis of polymers containing in the chains alternating pyrazole rings with a free NH-group of the pyrazole nucleus; the essence of this method is in the interaction of bisdiazo-compounds with n-diethynylbenzene or diacetylene. The synthesized polymers are yellow powders which are highly soluble in dimethylformamide and cresol, their reduced viscosity of a 0.5% solution in cresol is 0.2-0.3, and their molecular weight is approx. 10000. The polymer from 1,6-bisdiazohexane and n-diethynylbenzene has a melting point of 440 C (beginning at 416 C the polymer darkens); the polymer from bisdiazohexane and diacetylene melts in the range 350-374 C the polymer on a base of bisdiazoxylylene and diethynylbenzene does not melt til 500 C. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 29, 1964
Accession Number
AD0600815

Entities

People

  • Alicia M. Berlin
  • E. S. Krongauss
  • V. V. Korshak

Organizations

  • National Air and Space Intelligence Center

Tags

DTIC Thesaurus Topics

  • Alkynes
  • Chemical Compounds
  • Isothermal Processes
  • Melting
  • Melting Point
  • Molecular Weight
  • Organic Compounds
  • Phase Transformations
  • Pyrazoles
  • Thermodynamic Processes
  • Viscosity

Fields of Study

  • Chemistry

Readers

  • Analytical Chemistry
  • Polymer Science and Technology