Patent ID: 6727331
Filing Date: 2004-04-27
Classification: C08F

Abstract:
A process of making a polyethylene composition, comprising polymerizing an olefin mixture containing ethylene and up to about 15 wt % of a C3 to C10 &agr;-olefin in the presence of an azaborolinyl-containing single-site catalyst, an activator, and hydrogen; wherein the hydrogen consumption during a the polymerization is controlled to be less than 30 wt % based on the total amount of hydrogen charged into a polymerization; and wherein the polyethylene composition produced has a melt index (MI2) from about 0.01 to about 50 dg/min, a density from about 0.90 to 0.93 g/cm3, and a melt strength (&eegr;) that satisfies MI2Ã—&eegr;&gE;3.5, wherein &eegr;=&eegr;*Ã—10âˆ’5 and &eegr;* is a complex viscosity measured at 190Â° C. and at a complex modulus G*=5,000 dyn/cm2.