Accession Number:

AD0871648

Title:

Preparation and Characterization of a Bisbenzimidazopyrazine Polymer

Descriptive Note:

Technical rept. Nov 1968-Oct 1969

Corporate Author:

AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH

Personal Author(s):

• Evers, Robert C.

Report Date:

1970-05-01

Pagination or Media Count:

29.0

Abstract:

A bisbenzimidazopyrazine polymer was prepared by the melt and solution of 2,2-biscarbophenoxy-5,5-bibenzimidazole. A maximum inherent viscosity of 0.62 in methane sulfonic acid was obtained. Polymer structure was verified by elemental and infrared analysis. The polymer was an orange-brown amorphous powder which did not soften up to 450C. Onset of breakdown during thermogravimetric analysis in a nitrogen atmosphere occurred at 475-500C.

Descriptors:

• *HEAT RESISTANT PLASTICS
• POLYMERIZATION
• SYNTHESIS(CHEMISTRY)
• INFRARED SPECTRA
• NITROGEN HETEROCYCLIC COMPOUNDS
• THERMOGRAVIMETRIC ANALYSIS

Subject Categories:

• Organic Chemistry
• Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE