The current level of scientific and technological development requires unique composite materials that, along with many chemical, biological, physical, mechanical and technical characteristics, also have high-strength properties such as adhesion, high tensile strength, impact resistance, a wide operating temperature range, resistance to various types of corrosion, low water absorption, etc. In this regard, the development of methods for producing high-quality and multifunctional nanocomposite polymer materials of a new generation is the goal of our work. The developed composite materials consist of a polyetherurethane matrix and nanodispersed carbon components such as fullerenes C60, C70, nanotubes and other nanoparticles. The purpose of the presented article is to obtain nanocomposites based on a polyetherurethane matrix modified with fullerenes of various molecular weights. The offered composite materials have many of the unique properties listed above.