MULTIMODAL ETHYLENE-BASED COPOLYMER COMPOSITIONS AND PROCESSES OF PRODUCING
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United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Dec 29, 2022
filing date -
Dec 29, 2022
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Abstract
Embodiments of this disclosure includes processes of polymerizing a multi-modal polyethylene polymer. The process includes contacting ethylene and optionally one or more α-olefin monomers with at least two catalyst systems in a solution reactor at a reactor temperature of greater than 150° C. The at least two catalyst systems produce a vinyl end group count per 1000 carbon atoms is greater than 0.3. A first catalyst system of the at least two catalyst systems includes a first procatalyst; and a second catalyst system of the at least two catalyst systems comprises a second procatalyst having a reactivity ratio of less than 20, wherein the reactivity ratio of the first procatalyst is measured in a single reactor with only the first catalyst system in the presence of 1250 grams of ISOPAR-E, with a mol fraction of ethylene in solution of 0.709, and at a reactor temperature of at least 150° C.
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