In this article, six new optically active copoly (amide-imide) s (10a–f) were synthesized through the direct polycondensation reaction of N-phthalimido-l-aspartic acid (4) with 1, 5- diamino naphthalene (8), 3, 4-diamino benzophenone (9) in the presence of therphthalic acid (7), fumaric acid (6) and adipic acid (5) as a second diacid in a medium consisting of N- methyl-2-pyrrolidone, triphenyl phosphite, calcium chloride and pyridine. The resulting ...
