Multimodal polyethylene composition

A bimodal polyethylene composition comprising a lower molecular weight (LMW) polyethylene component and a higher molecular weight (HMW) polyethylene component, wherein each of the LMW and HMW polyethylene components comprises ethylene-derived monomeric units and (C3-C20)alpha-olefin-derived comonomeric units;

• and wherein the bimodal polyethylene composition is characterized by each of limitations (a) to (e):
• (a) a resolved bimodality (resolved molecular weight distribution) showing in a chromatogram of gel permeation chromatography (GPC) of the bimodal polyethylene composition, wherein the chromatogram shows a peak representing the HMW polyethylene component, a peak representing the LMW polyethylene component, and a local minimum in a range of Log(molecular weight) (“Log(MW)”) 3.5 to 5.5 between the Log(MW) peak representing the HMW polyethylene component and the Log(MW) peak representing the LMW polyethylene component, measured according to Bimodality Test Method;
• (b) a density from 0.950 to 0.960 g/cm3, measured according to ASTM D792-13 Method B;
• (c) a melt index (12) of from 0.5 to 1.5 g/10 min., measured according to ASTM D1238-13 (190° C., 2.16 kg);
• (d) a melt flow ratio (I21/I2) of from 150 to 300, wherein I2 is measured as above and I21 is flow index measured according to ASTM D1238-13 (190° C., 21.6 kg);
• (e) a flow index (Is) from 2.0 to 10.0 g/10 min., measured according to ASTM D1238-13 (190° C., 5.0 kg);
• and wherein the HMW polyethylene component of the bimodal polyethylene composition is characterized by limitations (f) and (g):
• (f) a weight-average molecular weight (Mw) of greater than 350,000 grams per mole (g/mol), as measured by Gel Permeation Chromatography Method;
• and (g) a molecular mass dispersity, DM, (Mw/Mn) greater than 3.50.