Abstract
AbstractA double chain or ladder polymer was obtained by the condensation of 1,2,4,5‐tetraaminobenzene with 2,3,7,8‐tetrasubstituted‐1,4,6,9‐tetraazaanthracene and self‐condensation of 2,3‐dihydroxy‐6,7‐diaminoquinoxaline and of 2,3‐diphenoxy‐6,7‐diaminoquinoxaline. The polycondensations were carried out in solution or in melt. The polymers thus obtained were highly colored products which had inherent viscosities up to 2.5. The structures of the polymers were established by comparison with model compounds.
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