Organic substances described in the literature as having semiconductor properties usually involve the presence of condensed aromatic rings and atoms of nitrogen.' The polymers with conjugated double bonds are therefore of considerable interest, especially those, containing in the chain, atoms which have electrons in the outer levels that do not participate in the chemical bond (for example, atoms of nitrogen). In such polymers, current carriers should appear quite easily, and with a sufficiently high regularity of the polymeric structure, the electron dispersion should be small. The required degree of regularity can be roughly estimated on the basis of the quantity of free run of the electrons in a semiconductor, the lengths of the C-C bonds, the lengths of the monomeric links, and the lengths of the electron wave. Tentative computations show that, in the case of a maximally drawn filament in which the polymer molecules are oriented in the direction of the current, in order to avoid dispersion on the structural irregularities as caused by irregularities in the configuration, it is sufficient if in the main chain of the polymeric molecule, for every 30-35 monomeric units, the branches present consist of no more than 12-15 atoms of carbon.The creation of polymers of such a degree of regularity is a t the present time quite feasible.A series of previous s t u d i e P 4 was dedicated to obtaining polymers having conjugated double bonds, chelate polymers, and those polymers, in addition, which contain heteroatoms in the basic chain.With such a point of view, interest was expressed in the condensation products of phthalic anhydride with hydroquinone and N-phenylenediamine having approximately the structure : *Presented a t the

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