Patent ID: 11952444
Assignee: TOTAL RESEARCH & TECHNOLOGY FELUY
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A polyethylene resin prepared using a continuous process and at least one metallocene catalyst, said polyethylene resin having:
a molecular weight distribution Mw/Mn lower than 6.5;
a molecular weight distribution Mw/Mn of at least 3.5;
a melt index ranging from an HLMI of at least 1.20 g/10 min to an MI2 of at most 6.0 g/10 min wherein MI2 is determined according to ISO 1133:1997 at a temperature of 190° C. and under a load of 2.16 kg, and HLMI is determined according to ISO 1133:1997, at a temperature of 190° C. and under a load of 21.6 kg;
a melt index ratio HLMI/MI2 below or equal to 30; and
a melt strength of X in Newtons, as determined by Göttfert Rheotens Melt Strength Apparatus, 190° C., as described in the Experimental section, satisfying the following equations (1) and/or (2):

X is greater than −0.026 ln(MI2)+0.0498  (1)

X is greater than −0.026 ln(HLMI)+0.1334  (2)

with Mw being the weight-average molecular weight and Mn being the number-average molecular weight.