Patent ID: 8101687

Claim:
A polyethylene resin having a multimodal molecular weight distribution, said resin being further characterized in that it: (a) has a density in the range from 0.935 g/ccm to 0.945 g/ccm, and (b) has a melt index (I 2 ) in the range from 0.1 g/10 min to 1.0 g/10 min, and (c) comprises 30 to 50 weight percent of a high molecular weight (HMW) component, and 70 to 50 weight percent of a low molecular weight (LMW) component; said weight percents being based on the total amount of polymer in the multimodal polyethylene resin, and wherein the HMW component comprises at least one high molecular weight ethylene interpolymer having a density in the range from 0.915 g/ccm to 0.935 g/ccm, and a melt index of 1.0 g/10 min or lower, and wherein the LMW component comprises at least one low molecular weight ethylene polymer having a density in the range from 0.945 g/ccm to 0.960 g/ccm, and a melt index in the range from 2.0 g/10 min to less than 200 g/10 min, and wherein the at least one high molecular weight interpolymer is a homogeneous ethylene interpolymer that has a single melting point between −30° C. and 150° C., and a CDBI greater than 50 percent; and the at least one low molecular weight ethylene polymer is a heterogeneous ethylene interpolymer that has a linear backbone, a DSC melting point greater than 115° C. attributed to a high density fraction, and a CDBI of 50 percent or less.