Preparation of poly-o-hydroxyamides and poly o-mercaptoamides

Details Preparation of poly-o-hydroxyamides and poly o-mercaptoamides Preparation of poly-o-hydroxyamides and poly o-mercaptoamides

1996-08-29

1998-03-10

Truong, Duc

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528 99, 528115, 528120, 528173, 528176, 528183, 528185, 528288, 528293, 528335, 528337, 528503, 521180, 521182, 521184, C08G 6908, C08G 7310

Patent

active

057262799

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.sup.1 through R.sup.4 are H, F, CH.sub.3, or CF.sub.3 (with a maximum of two CH.sub.3 or CF.sub.3 groups).

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