Polyimide-metallo-phthalocyanines and their preparation

Polyimide-metallo-phthalocyanines and processes for their preparation are provided. The products have the structural formula: ##STR1## where R' is an aromatic organic radical, the two carbon atoms attached thereto being attached to separate and adjacent carbon atoms in the aromatic radical, M is derived from a polyvalent metal or its salt, said polyvalent metal having an atomic number of at least 12 and G is an aromatic imide of the formula: ##STR2## WHEREIN Ar is a divalent aromatic organic radical, Ar' is a tetravalent aromatic organic radical, the four carbonyl groups being attached directly to separate carbon atoms and each pair of carbonyl groups being attached to adjacent carbon atoms in the Ar' radical, and n is a positive integer of at least one. These products are prepared by reacting phthalonitrile-terminated polyimides with polyvalent metals, such as copper, iron, magnesium et. or salts of such metals. The materials described herein are useful as high temperature resistant coatings, molded articles and laminated structures.