| abstract |
In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-aminophenol or a bis-o-aminothiophenol is reacted with a dicarboxylic acid derivative of the following structure: ##STR1## with D=O, S, or NH and where R* is the parent body of the dicarboxylic acid and the groups R 1 through R 4 are H, F, CH 3 , or CF 3 (with a maximum of two CH 3 or CF 3 groups). |