Preparation of polyethylene
AssigneeEquistar Chemicals, LP
InventorsMark K. Reinking, Harilaos Mavridis
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Abstract
A polyethylene having improved rheological properties is disclosed. The polyethylene has a melt index (MI2) from about 0.01 dg/min to about 50 dg/min and a melt strength (η) that satisfies MI2×η≧3.5. A process for making the polyethylene is also disclosed. The process uses an azaborolinyl-containing single-site catalyst in the presence of hydrogen, where the hydrogen consumption is controlled to be less than 30%.
Claims11
A polyethylene having a melt index (MI2) from about 0.01 to about 50 dg/min and a melt strength (η) that satisfies MI2×η≧3.5, wherein η=η*×10−5 and η* is a complex viscosity measured at 190° C. and at a complex modulus G*=5,000 dyn/cm2.
Dependencies are inferred from the claim text.