Patent ID: 11952480
Assignee: EXXONMOBIL CHEMICAL PATENTS INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A composition comprising:
1) about 99.5 wt % to about 99.75 wt % of a linear low density polyethylene (LLDPE) comprising a copolymer of ethylene and one or more C3 to C40 alpha-olefins and produced in a gas phase reactor, slurry reactor, solution reactor, or a combination thereof, the LLDPE having:
a density of about 0.91 g/cm3 to about 0.94 g/cm3;
a melt index of from about 0.1 to about 5 dg/min;
a composition distribution breadth index greater than or equal to 60%;
an Mw of about 20,000 g/mol to less than about 500,000 g/mol;
a melt strength of about 10 mN or greater;
a g′vis of about 0.97 or more; and
an Mw/Mn of about 1.8 to about 6.0; and

2) about 0.25 wt % to about 0.5 wt % of a high density linear ultra-high molecular weight polyethylene (UHMW-PE) comprising a copolymer of ethylene and one or more C3 to C40 alpha-olefins and having:
an Mw of about 500,000 g/mol or more;
an Mw/Mn of about 4.0 to about 7.0;
a density of about 0.94 g/cm3 to about 0.97 g/cm3; and
a g′vis of about 0.97 or more;

wherein the composition:
has a shear thinning index at 190° C. between 4.0 and 11.0; and
has a strain hardening ratio at 150° C., 0.1 s−1 of about 1.5 or more; and
when formed into a film produces a film having:
a machine direction Elmendorf Tear greater than about 150 g/mil to 250 g/mil; and
a Dart Drop (Phenolic A) greater than about 400 g/mil to 550 g/mil.