Ethylene-based polymer compositions, methods of making the same, and articles prepared from the same

A composition comprising a blend, which blend comprises a high molecular weight ethylene-based polymer and a low molecular weight ethylene-based polymer, and wherein

• the high molecular weight ethylene-based polymer component has a density less than, or equal to, 0.945 g/cm3, a melt index (I2) less than, or equal to, 0.1 g/10 min, and a molecular weight distribution greater than 6, and
• wherein the blend has a high load melt index (I21) less than, or equal to, 15 g/10 min, and a melt index (I5) less than, or equal to 1 g/10 min, and a molecular weight distribution (Mw/Mn) greater than, or equal to, 15, and
• wherein the high molecular weight ethylene-based polymer has a z-average molecular weight, Mz, greater than, or equal to, 106 g/mole, as determined by GPC, and
• wherein high molecular weight ethylene-based polymer is a heterogeneously branched ethylene-based interpolymer;
• and
• wherein the low molecular weight ethylene-based polymer is a heterogeneously branched ethylene-based interpolymer;
• wherein the blend has a weight fraction greater than, or equal to, 4.5 weight percent of the blend, which comprises polymer molecules that have a molecular weight greater than, or equal to, 106 g/mole, as determined by conventional GPC.

A composition comprising a blend, which blend comprises a high molecular weight ethylene-based polymer, and a low molecular weight ethylene-based polymer, and wherein

• the high molecular weight ethylene-based polymer has a density less than, or equal to, 0.945 g/cm3, and a melt index (I2) less than, or equal to, 0.1 g/10 min, and
• wherein the blend has a high load melt index (I21) greater than, or equal to, 1 g/10 min, and a molecular weight distribution (Mw/Mn) greater than, or equal to, 15, and
• wherein the high molecular weight ethylene-based polymer has a z-average molecular weight, K, greater than, or equal to, 106 g/mole, as determined by GPC, and
• wherein high molecular weight ethylene-based polymer is a heterogeneously branched ethylene-based interpolymer, and
• wherein the high molecular weight ethylene-based polymer has a molecular weight distribution greater than 6, as determined by conventional GPC;
• and
• wherein the blend has a weight fraction greater than, or equal to, 4.5 weight percent of the blend, which comprises polymer molecules that have a molecular weight greater than, or equal to, 106 g/mole, as determined by conventional GPC.

A composition comprising a blend, which blend comprises a high molecular weight ethylene-based polymer, and a low molecular weight ethylene-based polymer, and

• wherein the high molecular weight ethylene-based polymer has the following properties:
• (i) a density less than, or equal to, 0.955 g/cm3, (ii) a high load melt index (I21) greater than, or equal to, 0.05 g/10 min, and
• wherein the blend has a weight fraction greater than, or equal to, 4 weight percent, based on the weight of the blend, which comprises polymer molecules that have a molecular weight greater than 106 g/mole, and wherein the blend has a density greater than, or equal to, 0.93 g/cm3, and
• wherein the high molecular weight ethylene-based polymer has a z-average molecular weight, K, greater than, or equal to, 106 g/mole, as determined by GPC, and
• wherein high molecular weight ethylene-based polymer is a heterogeneously branched ethylene-based interpolymer, and
• wherein the blend has a melt index, I21, greater than, or equal to, 20 g/10 min;
• and
• and wherein the blend has a melt flow ratio (121/12) greater than, or equal to, 130.