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公开(公告)号：US20240400804A1
公开(公告)日：2024-12-05
申请号：US18696216
申请日：2022-10-04
Inventor： Nino RUOCCO , Maria Josefina CARBONE , Etienne RH LERNOUX , Michael A. LEAF , Wen LI , Adriana S. SILVA
Abstract: The present disclosure relates to polyethylene blends, films thereof, and methods thereof. In at least one embodiment, a polymer blend includes a first polyethylene having a density of about 0.94 g/cm3 to about 0.97 g/cm3 and a melt index of about 0.1 g/10 min to about 10 g/10 min. The blend includes a second polyethylene comprising at least 80 wt % ethylene derived-units. The second polyethylene has a density of about 0.918 g/cm3 to about 0.945 g/cm3, a number average molecular weight (Mn) of about 10,000 g/mol to about 20,000 g/mol, a weight-average molecular weight (Mw) of about 75,000 g/mol to about 300,000 g/mol, a melt index (2.16 kg) of about 0.1 g/10 min to about 5 g/10 min, a high load melt index (21.6 kg) of about 25 g/10 min to about 80 g/10 min, and a melt index ratio of about 10 to about 50.
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公开(公告)号：US20250084193A1
公开(公告)日：2025-03-13
申请号：US18784035
申请日：2024-07-25
Inventor： Nino RUOCCO , Haiqing PENG , Nilesh SAVARGAONKAR , Keith W. TRAPP
Abstract: The present disclosure relates to polyethylene compositions, articles (e.g., films) including such polyethylene compositions, and methods of making polyethylene compositions and articles (e.g., films) thereof. The polyethylene composition comprises 80 wt % or greater ethylene-derived units; has density within the range from 0.940 to 0.975 g/cm3; a melt index (MI) of 0.1 to 3.0 g/10 min (such as 0.5 g/10 min to 2.5 g/10 min); a high load melt index (HLMI) within the range from 60 g/10 min to 150 g/10 min; a melt index ratio (MIR, defined as HILMI/MI) greater than 50; and has a crossover frequency (COF) according to the following relationship: COF>−0.00015*(Mw)+80 (where COF is in rad/s and Mw is weight-average molecular weight in g/mol).
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