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Discovery of Highly Active Molecular Catalysts for Ethylene Polymerization

3 Discovery of Highly Active Molecular Catalysts for Ethylene Polymerization [Pg.9]

Examples of non-symmetric and electronically flexible ligands are shown in Fig. 7, including neutral monoanionic as well as dianionic ligands. The ligands possess HOMO/LUMO energy gap values of 8.5 eV for neutral ligands and 7.0 eV for anionic ligands, at the MNDO-PM3 level calculations. [Pg.9]

A large number of transition metal complexes whose cationic complexes are 10- to 16-electron species (including those with the ligands summarized in Fig. 7) were investigated to determine their potential as ethylene polymerization catalysts with methyaluminoxane (MAO) activation at 25 °C under atmospheric pressure. As a result, we discovered a number of high-activity catalysts for ethylene polymerization that contain electronically flexible ligands [11]. [Pg.9]




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Activated polymerization

Activation of catalysts

Activator polymerization

Catalyst discovery

Catalyst for ethylene polymerization

Catalyst, highly active

Catalysts ethylene

Catalysts polymerizing

Ethylene discovery

Ethylene polymerization

Ethylene polymerization catalysts

Ethylene polymerizations, highly active

Ethylene polymerizations, highly active molecular catalysts

High activities

High-activity catalysts

Molecular activity

Molecular catalysts

Molecular discovery

Molecular polymerization

Of polymeric catalysts

Polymeric catalysts for

Polymerization activators for

Polymerization activity

Polymerization, activation

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