One-pot synthesis of linear and branched poly(amide aspartimide)s with good solubility in organic solvents

Abstract

Linear and branched poly(amide aspartimide)s were prepared through the reaction of 4,4′-diaminodiphenylmethane with 4-maleimidobenzoic acid and 5-maleimidoisophthalic acid, respectively. The synthesis was performed through a one-pot operation by means of the Michael addition reaction between amine and maleimide groups and the dehydration condensation reaction between amine and carboxylic acid groups. The obtained polymers exhibited fairly good solubility in aprotic polar solvents at room temperature and in pyridine, tetrahydrofuran, acetone, and chloroform upon heating. High glass-transition temperatures (≥225°C) and thermal stability above 360°C were found for the polymers. © 2005 Wiley Periodicals, Inc.