FIELD: polymer materials. SUBSTANCE: ethylene-propylene and/or ethylene-higher α-olefin copolymers, optionally, with insignificant quantities of 4,4Т- diisopropylidenediphenol or polyene are provided with following characteristics: crystallinity content measured as enthalpy function below 20 J/g, solubility in pentane at 25 C above 90%, content of propylene units or α-olefin units in the form of triads from 4 to 50% total propylene or corresponding α-olefins (at least 70% triads have isotactic structure), monomer polymerization constant product equals 0.4 to 1, and intrinsic viscosity is above 1.5 dl/g. EFFECT: improved consumer characteristics. 6 cl, 2 tbl
