| Abstract: | The study described here deals with the methods of synthesis of two new bisphthalonitrile derivatives with ester—imide linkages and their polymerization. Optimum conditions for the synthesis and characterization of the bisphthalic anhydrides, bisphthalonitriles, and polymers are developed using IR spectral, differential scanning calorimetric, dynamic thermogravimetric analytical, and mass spectral studies. These new polymers showed good thermal stability and chemical inertness. The polymers showed char yield of 50% at 800°C in nitrogen atmosphere. These thermosetting phthalocyanine polymers are expected to be useful in various applications such as the production of moulded articles and laminates. |
