ABSTRACT
Polyurethane elastomers (PUE) are of great practical importance in various fields [1]. In particular, in developing PUE of molding compositions for sports and roofing the liquid rubbers (oligomers) of diene nature with a molecular weight of 2,0004,000 are widely used as a polyol component. Usually these are homopolymers of butadiene and isoprene, the products of copolymerization of butadiene with isoprene or butadiene with piperylen and isocyanate prepolymers based on these oligomers.
