Abstract:
Homogeneous polymerization of ethylene was investigated on soluble metallocene Ziegler-Natta catalyst. The catalyst was prepared from bis-(cyclopentadienyl)-zirconium dichloride, in conjuction with methylaluminoxane in toluene solution. The effects of such parameters as ethylene partial pressure, polymerization temperature, mole ration of Al/Zr1 and types of cocatalyst on the behavior of metallocene-methylaluminoxane were investigated. The catalytic activity and polymerization rate were the highest at Al/Zr1 mole ratio of 4,400, polymerization temperature of 55 degree celsius, ethylene partial pressure of 40 psi and using methylaluminoxane as cocatalyst. Methylaluminoxane as cocatalyst can polymerize ethylene much higher than ethylalumninoxane did. The polymer obtained from soluble metallocene catalyst was characterized for physical and chemical properties.
