Leningrad, Chemistry, 1988. - 248 s. Dedicated to the analysis of the causes of heterogeneity of copolymers by composition. Characteristics of quantitative description of heterogeneity, methods of its assessment. The influence of the composition of the copolymer on its physico-chemical, technological and operational properties is shown. For scientific and engineering workers in the plastics industry. Useful for teachers, graduate students and university students. In the literature on various issues of studying polymer systems, sufficient attention is paid to the analysis of the most important and interesting (in theoretical and applied terms) polymeric objects - copolymers, which can be judged by a large number of journal publications and monographs. The publication of the next monograph is expedient and justified in two cases: if it contains a fundamentally new approach to the assessment of the laws of synthesis and properties of copolymers if the body of scientific and technical information for a certain class of copolymer systems or for a certain section of the science of copolymers is so capacious that it requires generalization and systematization often the practical importance of a class of copolymer objects is the main stimulating factor in writing a monograph on chemistry and technology The book offered to the reader refers to monographs of the first type .. Since the mid-1960s. its authors systematically investigated some of the general patterns of statistical binary copolymerization and came to believe that in many cases the relative activity of comonomers depends on the composition of the original (monomeric) mixture or changes with conversion, or the whole circuit is complicated by heterophase. Very often these circumstances leading to "anomalies" act simultaneously. It should be noted that such violations can occur for various reasons and during homopolymerization .. The main focus of our work was , to , from the statistical characteristics of copolymerization, expressed by the compositional distribution curves (CRC), It is relatively easy to establish the nature and mechanism of special copolymerization processes. for example, Complicated by electrochemical factors , change in the phase of systems in the course of processes , the possibility of formation n eats ehi about metric interpolymer complexes and t. p.