Table 1. Ethylene Polymerization Using Ni1Cl with a Range of Different Cocatalystsa.
| entry | co-cat. | Al/Ni | act. | Mwb | Mw/Mnb | Tmc |
|---|---|---|---|---|---|---|
| 1 | MAO | 2500 | 2.6 | 0.9 | 1.6 | 91.5, 103.8 |
| 2 | MMAO | 2500 | 1.2 | 1.0 | 1.6 | 96.4, 106.1, 113.5 |
| 3 | Me2AlCl | 400 | 1.7 | 0.8 | 1.4 | 75.6, 99.82 |
| 4 | EASC | 400 | 1.0 | 0.8 | 1.4 | 75.6, 99.6 |
General conditions: 2.0 μmol of Ni1Cl, 100 mL of toluene, 10 atm of ethylene, 30 min, 30 °C, and activity in units of 106 g of PE (mol of Ni)−1 h–1.
Mw in units of kg mol–1, determined by GPC.
Tm in units of °C, determined by DSC.