POLYMERIZATION OF ETHYLENE, PROPYLENE AND 1-HEXENE OVER (2-MEIND)(2)ZRCL2 MAO CATALYST/

Ethylene, propylene and 1-hexene were polymerized over an unbridged me tallocene catalyst, bis(2-ethylindenyl)zirconium dichloride [(2-MeInd) (2)ZrCl2]. The catalytic activity toward ethylene polymerization decre ased with decreasing polymerization temperature, while reverse trends were observed in the case of propylene and 1-hexene. A slight increase in the mm triad fraction and elastomeric properties of polypropylene was observed when propylene was polymerized at a lower temperature. (C ) 1998 Elsevier Science Ltd. All rights reserved.