The Highly Controlled and Efficient Polymerization of Ethylene

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Abstract

The highly controlled and efficient polymerization of ethylene is a very attractive but challenging target. Herein we report on a Coordinative Chain Transfer Polymerization catalyst, which combines a high degree of control and very high activity in ethylene oligo- or polymerization with extremely high chain transfer agent (triethylaluminum) to catalyst ratios (catalyst economy). Our Zr catalyst is long living and temperature stable. The chain length of the polyethylene products increases over time under constant ethylene feed or until a certain volume of ethylene is completely consumed to reach the expected molecular weight. Very high activities are observed if the catalyst elongates 60 000 or more alkyl chains and the polydispersity of the strictly linear polyethylene materials obtained are very low. The key for the combination of high control and efficiency seems to be a catalyst stabilized by only one strongly bound monoanionic N-ligand.

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APA

Goller, A., Obenauf, J., Kretschmer, W. P., & Kempe, R. (2023). The Highly Controlled and Efficient Polymerization of Ethylene. Angewandte Chemie - International Edition, 62(8). https://doi.org/10.1002/anie.202216464

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