| 摘要 |
Catalysts for the polymerisation of olefins comprising the product of the reaction between: a) a metallocene compound of titanium, zirconium or hafnium comprising two substituted cyclopentadienyl rings joined together by means of a bridging group, and b) the product of the reaction between water and an aluminium alkyl in which at least one alkyl contains at least three carbon atoms, the aluminium alkyl: water ratio being greater than 2:1. |
