The invention is related to compositions suitable for the fabrication of pipes, and other articles, with excellent performance properties. The invention provides a composition, comprising a blend, wherein said blend comprises a high molecular weight ethylene-based interpolymer and a low molecular weight ethylene-based interpolymer, and the high molecular weight ethylene-based interpolymer is a heterogeneously branched linear or a homogeneously branched linear ethylene-based interpolymer, and has a density from 0.922 g/cc to 0.929 g/cc, and a high load melt index (I21) from 0.2 g/10 min to 1.0 g/10 min, and the low molecular weight ethylene-based interpolymer is heterogeneously branched linear or a homogeneously branched linear ethylene-based interpolymer, and has a density from 0.940 g/cc to 0.955 g/cc, and a melt index (I2) from 6 g/10 min to 50 g/10 min. The blend has a single peak in an ATREF profile eluting above 30 DEG C., and has a coefficient of viscosity average molecular weight (CMv) less than -0.0032 in the log(calculated Mv) versus elution temperature, said CMv calculated in the range of elution temperatures from 70 DEG C. to 90 DEG C.. The Mv is the viscosity average molecular weight.

Title
Polyethylene compositions, methods of making the same, and articles prepared therefrom
Application Number
200780047975
Publication Number
101568586
Application Date
October 19, 2007
Publication Date
October 28, 2009
Inventor
Ho Thoi
Neubauer Anthony
Kinnan Michael
Whited Stephanie
Hazlitt Lonnie
Chang Dane
Michie William
Agent
Wu Peishan
Assignee
Dow Global Technologies
IPC
C08L 23/00