The relationship between the structure, physical-mechanical, and elastic-deformation characteristics of newly formed nanocomposites based on a mixture of PP/PA-6 (Polypropylene/polyamide-6) with montmorillonite (MMT), which was modified with polyvinylpyrrolidone (PVP), is investigated in this work. The influence of the content of modified PA-6 on the nature of its distribution in the polymer matrix of PP was investigated using microscopic analysis. It is shown that the content of the modified PA-6 significantly affects the nature of the distribution and structure of the composites obtained in the melt. It was found that the most homogeneous structure is characterized by composites with the content of modified PA-6 from 15 to 30 wt%. It is shown that due to the mixing of PP with modified polyamide, the hardness and modulus of elasticity of composites significantly increase compared to pure PP. This reduces the relative elongation of the composites by 2 times.