| abstract |
The instant invention is a high-density polyethylene composition, and method of making the same. The high-density polyethylene composition of the instant invention includes an ethylene alpha-olefin copolymer having a density in the range of 0.935 to 0.952 g/cm 3 , a melt index (I 2 ) in the range of 30 to 75 g/10 minutes, an I 21 /I 2 ratio in the range of 13-35, a M w /M n ratio in the range of 3.5-8. The high-density polyethylene composition has a brittleness temperature of at least less than −20° C. The process for producing a high-density polyethylene composition according to instant invention includes the following steps: (1) introducing ethylene, and an alpha-olefin comonomer into a reactor; (2) copolymerizing the ethylene with the alpha-olefin comonomer in the reactor; and (3) thereby producing the high-density polyethylene composition, wherein the high-density polyethylene composition having a density in the range of 0.935 to 0.952 g/cm 3 , a melt index (I 2 ) in the range of 30 to 75 g/10 minutes, an I 21 /I 2 ratio in the range of 13-35, a M w /M n ratio in the range of 3.5-8, and a brittleness temperature of at least less than −20° C. |