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Aluminoxanes refer to compounds that are obtained by the partial hydrolysis of trialkylaluminium compounds. Aluminoxanes serve as activators for catalytic olefin polymerisation, such as the Ziegler-Natta catalyst. They also serve a function as scavenger for impurities (e.g. water) in reactions that are sensitive to these impurities.
Examples of aluminoxanes include:
- Triisobutylaluminoxane (TiBAO), formed by the hydrolysis of triisobutylaluminium
- Methylaluminoxane (MAO), formed by the hydrolysis of trimethylaluminium
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