abstract |
A salt of formula (I): [HKR13]?+[T1T2]-¿ wherein K is a nitrogen or phosphorous atom; R1 is hydrocarbon radical; T1 is a Lewis acid and T2 is a substituted pyrrolyl radical. These salts can be used as cocatalyst in a process for the polymerization of alpha-olefins in conjunction with a transition metal organometallic compound. |