The influence of a parity of components of mixes of polyamide, polyurethane and acrylonitrile-butadien-styrene a copolymer on their breaking point, durability on a bend and shock durability is considered. It is shown, that for achievement of necessary technological compatibility of polymeric compositions in their structure the various components promoting improvement  of their workability and a mutual dispersion of components in the process of mixture are added.