POLYESTERS AND POLYAMIDES CONTAINING ISOMERIC FURAN DICARBOXYLIC ACIDS.

Abstract

A considerable amount of work has been done using furan, 1, derivatives to synthesize polyesters, polyamides, and various other polymeric materials. Much of this work has been completed in the last thirty years, with the majority of it dealing with 2,5-furan dicarboxylic acid and its derivatives. 2,4-furan dicarboxylic acid, and 3,4-furan dicarboxylic acid, and their derivatives have been less used as starting materials. Little or no polymer synthesis has been reported employing 2,3-furan dicarboxylic acid or its derivatives. This work is concerned with the preparation of polyesters and polyamides which contain repeat units derived from the isomeric furan dicarboxylic acids.