Experimental data on the interaction of phthalodinitriles and bis(phth
alodinitriles) with aromatic diamines are summarised. The dependence o
f the reaction mechanism of phthalodinitriles with diamines on the che
mical structure of diamines and phthalodinitriles, as well as reaction
medium nature, is considered; general ideas on this mechanism are for
mulated. The principal regularities of polycondensation of bis(phthalo
dinitriles) with diamines are established and possibility is shown for
this reaction to be used for preparation of a number of new classes o
f heterocyclic polymers containing benzopyrrolic fragments in the chai
n.