Patent No. EP3717527 (titled "Polyethylene Compositions And Films Made Therefrom") was filed by Exxonmobil Chemical Patents on Oct 15, 2018. The application was issued on Dec 18, 2024.
Polyethylene compositions with broad composition distribution (BCD) properties, suitable for films and other applications requiring a balance of stiffness, toughness, and optical properties. The compositions comprise at least 65 wt% ethylene units and up to 35 wt% C3-C12 olefin comonomer units, with a BCD characterized by varying comonomer content along the polymer chain. The BCD properties are achieved through the use of specific catalyst systems, including metallocene catalysts, activators, and supports, in combination with controlled polymerization conditions.

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