Ethylene → Ethene propene ethylidenenorbornene

Participants

Reaction Steps

A 1-liter continuous polymerization reactor was charged continuously with 500 ml/hr of toluene, 0.5 millimole/hr of tributyl aluminum, 0.5 milligram-atom/hr, calculated as aluminum atom, of the aluminoxane synthesized in Example 28, and 5×10-3 milligram-atom/hr, calculated as zirconium atom, of the catalyst component (A) synthesized in Example 40. Simultaneously, 150 liters/hr of ethylene, 100 liters/hr of propylene, and 1.2 g/hr of ethylidene-2-norbornene (ENB) were continuously fed into the reactor. The polymerization was carried out at a temperature of 20° C. under atmospheric pressure with a residence time of 1 hour and a polymer concentration of 14 g/liter. The resulting polymerization product was worked up as in Example 28 to give an ethylene/propylene/ENB copolymer having an MFR of 2.04 g/10 min., an ethylene content, determined by 13C-NMR, of 85.8 mole %, an Mw/Mn of 2.49 and an iodine value of 10.

Provenance & Evidence