The study of the effect of stresses on reactivity is of principal importance and could be considered one of the important problems in organic chemistry. This problem also relates to the chemistry of high-molecular weight compounds, specifically in polymer degradation and stabilization. When processed and exploited, polymers are often subjected to a simultaneous action of stresses and aggressive media. It is not possible for one to conduct a search for an efficient means of stabilizing the polymers without understanding the effect of stresses on chemical reaction kinetics.