Narrow MWD, compositionally optimized ethylene interpolymer composition, process for making the same and article made therefrom

摘要

A polymer composition comprises at least two polymer components, the first component having an ATREF peak temperature, T_peak1, and a viscosity average molecular weight, M_v1, and the second component having an ATREF peak temperature, T_peak2, and a viscosity average molecular weight, M_v2, wherein the temperature differential between T_peak2 and T_peak1 decreases with increased composition density and M_v1/M_v2 is less than or equal to 1.2. the composition is further characterized as having a M_w/M_n of less than or equal to 3.3, an I₁₀/I₂>6.6, and a composition density less than 0.945 gram/cubic centimeter.