“…E-mail: andrey@ineos.ac.ru atom, and their nearest substituents. 5,6 A decrease in the number of repeating units between cross-link points (if it amounts to several tens) affects insignificantly the glass transition temperature, the molar volume, the refractive index, and some other characteristics. However, when the number of the repeating units between cross-link points is very small (several units), its decrease results in abrupt changes in the properties (Fig.…”