Abstract
AbstractBy condensing a hydroquinone bis‐lactone of 1,4‐dihydroxybenzene‐2,5‐bis(ethyl‐2′‐carboxylic acid) with diamines such as hexamethylene diamine, piperazine, 4‐aminoethylpiperidine, or 1,3‐di‐(4′‐piperidinyl) propane, redox polyamides can be prepared. The lactone functions protect the hydroxyl groups until the polymerization occurs at which point, due to the opening of the lactone rings, free hydroquinone hydroxyls appear. The resulting polymer is oxidizable. When the oxidized polymer is reduced the viscosity is higher than that of the original reduced polymer.
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