Accession Number:

AD0722246

Title:

Polyquinazolotriazoles,

Descriptive Note:

Corporate Author:

BOEING SCIENTIFIC RESEARCH LABS SEATTLE WASH

Personal Author(s):

Report Date:

1971-03-01

Pagination or Media Count:

29.0

Abstract:

A novel high molecular weight etainh 1.4 dlg polyquinazolotriazole PQT was prepared from the reaction of 3,3-2,6-pyridinediylbis5-o-aminophenyl-1,2,4-triazole with isophthalic acid by solution cyclopolycondensation in polyphosphoric acid, with diphenyl isophthalate by melt polycondensation, and with isophthaloyl chloride to form a precursor polyamide which subsequently underway cyclodehydration. Thermal characterization of the PQT by TGA showed initial weight loss in air commencing at about 490C. The PQT exhibited a weight loss of only 4 after aging in static air for 200 hr at 316C and a Tg of 342C as measured by DSC. Prior to polymer synthesis, a series of model compounds were prepared and characterized. Author

Subject Categories:

  • Organic Chemistry
  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE