ALKYLALUMINOXANE COMPOSITIONS PREPARED FROM TRIMETHYLALUMINUM AND TRIETHYLALUMINUM AND USES THEREOF IN ETHYLENE OLIGOMERIZATION PROCESSES
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United States of America
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Oct 31, 2024
app pub date -
Apr 23, 2024
filing date -
Apr 23, 2024
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Abstract
Alkylaluminoxane compositions are produced by a process that includes the steps of reacting trimethylaluminum, triethylaluminum, and water in a hydrocarbon solvent to form an alkylaluminoxane, and then removing insoluble aluminum-containing materials from the solvent to form the alkylaluminoxane composition containing from 0.1 to 20 wt. % of aluminum. Generally, the molar ratio of trimethylaluminum:triethylaluminum is from 5:95 to 80:20, and the molar ratio of water:aluminum is from 0.2:1 to 1:1. The alkylaluminoxane compositions can be utilized as an activator in transition metal-based catalyst systems and in ethylene oligomerization processes.
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