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US 2026/0054439 A1Published application
Highly oriented linear low density polyethylene films with outstanding processability and mechanical properties
OwnerNino RUOCCO, Wen LI +3inventors
InventorsNino RUOCCO, Wen LI, Xin ZHANG, Kai WANG, Xin Hao CAI
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Abstract
Polyethylene compositions that exhibit an excellent balance of flexibility, processability, and mechanical strength. The polyethylene compositions have a surprising balance between BOCD-type profiles and molecular weights that can be used to fabricate highly oriented monolayer blown-MDO films with high stiffness and good puncture.
Claims18
A polyethylene composition comprising:
- about 80 wt % to about 99 wt % ethylene-derived content, and about 1.0 wt % to about 20 wt % units derived from one or more C3 to C40 α-olefin comonomers, based on a total weight of the polyethylene composition, wherein the polyethylene composition comprises:
- a density of 0.922 g/cm3 to 0.940 g/cm3;
- a melt index (I2.16) of 0.1 g/10 min to 5 g/10 min;
- a melt index ratio (I2.16/I21.6) of 10 to 50;
- a weight average molecular weight, Mw (LS) of 90,000 g/mol or above;
- a molecular weight distribution (Mw/Mn) ratio (LS) of 5.5 or above;
- a ratio of z-average molecular weight to weight-average molecular weight (Mz/Mw) of 2 to 5;
- a ratio of wt % comonomer at Mz (LS) to wt % comonomer at Mw (LS) of I to 5;
- a ratio of wt % comonomer at Mn (LS) to wt % comonomer at Mw (LS) of 0.1 to 0.9;
- and
- a ratio of wt % comonomer at Mz (LS) to wt % comonomer at Mn (LS) of 2 to 10.
8 more elements
Dependencies are inferred from the claim text.