Abstract: In one embodiment, a process is disclosed for the preparation of a multilayer intermediate product impregnated with polyurethane that is useful for the production of soft synthetic leather having enhanced mechanical resistance. The process comprises the steps of: a. producing a microfibrous non-woven intermediate product that includes microfibers of one or more polymers selected from the group consisting of polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polyacrylonitrile, and polyamide; b. producing an intermediate multilayer product by adhesive coupling, the intermediate multilayer product including at least one layer of the non-woven microfibrous intermediate product and at least one layer of a reinforcing textile product; and c. impregnating the multilayer intermediate product with one or more polyurethane solutions, thereby obtaining a multilayer intermediate product impregnated with polyurethane.