Preparation and Characterization of a Bisbenzimidazopyrazine Polymer
Technical rept. Nov 1968-Oct 1969
AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH
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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.
- Organic Chemistry
- Polymer Chemistry