The correlation between physico-chemical and physico-mechanical parameters of oligomer compositions and polymer composites on the base of these systems are revealed. The thiocol-epoxy, laproxide-, and oxylin-epoxy systems are investigated in wide concentration range, and the values of chromatographic polarity factors characterizing the physico-chemical nature of oligomers, and their mixtures are determined. The mathematical model is constructed relating the final strength characteristics of a polymer material to the physico-chemical parameters of an oligomer-oligomer mixture described by conventional chromatographic polarity factors
