Addition curable phenyl-quinoxaline compositions and their synth

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal

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260 47R, 260 49, 260 50, 260 65, C07D24142, C07D24144

Patent

active

039667294

ABSTRACT:
An aromatic bis(o-diamine) is reacted with an aromatic bisbenzil to provide a benzil end-capped quinoxaline oligomer which is then reacted with 4-(3-ethynylphenoxy)orthophenylene diamine to give an ethynyl terminated polyquinoxaline. Because the polyquinoxalines can be cured to provide thermally stable polymer compositions having superior mechanical properties, the compositions are particularly suitable for use in the fabrication of reinforced composite structures.

REFERENCES:
patent: 3876614 (1975-04-01), Hedberg

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