| abstract |
A catalyst system comprising a half-sandwich chromium complex, an activator support and an optional cocatalyst. A compound of formula Cp'Cr(C1)2(L n), where Cp' is .eta.5-C5H4CH2CH2CH=CH2 and L n is pyridine, tetrahydrofuran (THF) or diethylether. A compound of formula Cp"Cr(C 1 )2(L n), where Cp" id .eta.5-C5F4C(Me)2CH2CH2CH=CH2 and L n is pyridine, THF or diethylether. |