Polyhydrazide materials are of great interest because they enhance dyeability of synthetic fibers; improve elasticity over other polymer types and their use in reverse osmosis separations. The polyhydrazides are high performance materials, that have ability to spin to high modulus fibers and could be used as a reinforced plastics and tire cords. In particular, they are soluble polymers with potential to convert to other highly thermally stable polymers like polyoxadizoles and polytriazoles. Aromatic polyhydrazides (that are base , 2,8-bis(carboxylic)-6H, 12H-5,11-methanodibenzo-[b,f][1,5]-diazocine dihydrazide, was prepared by the condensation of ethyl p -aminobenzoate with hexamethylenetetramine in the presence of trifluoroacetic acid, followed by converting to the dihydrazide with a high yield and high purity. A series of new aromatic polyhydrazides were prepared from dihydrazide containing V shaped Tr?ger’s base and various aromatic diacyl chlorides via low-temperature solution polycondensation, in quantitative yields. Among several different reaction pathways that have been developed for polyhydrazide synthesis., low–temperature polycondensation by the reaction of diacyl chloride with dihydrazide is the most popular method. All of the polyhydrazides were amorphous and readily soluble at room temperature in polar organic solvents such as N,N-dimethylacetamide and N-methyl-2-pyrrolidone. These polymers could be solution cast into traarent, tough, and flexible films with good mechanical properties. They had useful levels of thermal stability associated with good glass transition temperatures (163–172 °C), 10% weight-loss temperatures in excess of 460 °C, and char yields at 800 °C in nitrogen higher than 39%.