Compositions with multimodal ethylene-based polymers having improved toughness at low temperatures

A polymer composition comprising:

• at least one multimodal ethylene-based polymer having a density from 0.900 to 0.930 g/cc when measured according to ASTM D792 and a melt index (I2) from 0.1 to 10.0 g/10 min when measured according to ASTM D1238 at a load of 2.16 kg and temperature of 190° C., the multimodal ethylene-based polymer comprising a first ethylene-based component, a second ethylene-based component, and a third ethylene-based component, wherein each of the first ethylene-based component, the second ethylene-based component, and the third ethylene-based component are polymerized reaction products of ethylene monomer and at least one C3-C12 α-olefin comonomer, wherein:
• the first ethylene-based component has a density of 0.870 to 0.900 g/cc, a melt index (I2) from 0.02 to 0.15 g/10 min, a weight-average molecular weight (Mw(GPC)) of 128,000 g/mol to 363,000 g/mol, and comprises 3 to 20 mol. % of C3-C12 α-olefin comonomer, the multimodal ethylene-based polymer comprising at least 20% by weight of the first ethylene-based component;
• the second ethylene-based component has a density greater than the density of the first ethylene-based component and from 0.900 to 0.920 g/cc, a melt index (I2) from 0.2 to 1.0 g/10 min, and a weight-average molecular weight (Mw(GPC)) of 88,500 g/mol to 363,000 g/mol, comprises 3 to 20 mol. % of C3-C12 α-olefin comonomer, and a lower C3-C12 α-olefin comonomer incorporation than the first ethylene-based component;
• and
• the third ethylene-based component has a density greater than the density of the second ethylene-based component and from 0.940 to 0.960 g/cc, and a melt index (I2) from 150 to 2000 g/10 min.