OLEFIN POLYMERIZATION CATALYST SYSTEM AND POLYMERIZATION PROCESS
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United States of America
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Nov 28, 2024
app pub date -
Sep 16, 2022
filing date -
Sep 16, 2022
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Abstract
An olefin polymerization process is carried out in the presence of a catalyst system comprising a pre-polymerization catalyst, a boron-based catalyst activator, an alkylaluminoxane co-catalyst, and a hindered phenol compound. The pre-polymerization catalyst is a titanium complex and has an indenoindolyl ligand bridged to a phenoxy ligand via a silyl group. The catalyst system is effective at polymerizing ethylene with alpha-olefins in a solution phase polymerization process at high temperatures and produces ethylene copolymers with high molecular weight and high degrees of alpha-olefin incorporation.
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