| 摘要 |
The present invention discloses a method for preparing a dissolved catalyst component comprising the steps of: a) providing a halogenated precursor component of formula (I) ---X-Ä-CH2-Ü-CH3 b) reacting the halogenated precursor with an ionic liquid precursor in a solvent to prepare an ionic liquid; IL<+>X<-> c) optionally, reacting the intermediate IL<+>X<-> with a salt C<+>A<->, wherein C<+> is a cation that can be selected from K<+>, Na<+>, NH4<+>, and A<-> is an anion that can be selected from PF6<->, SbF6<->, BF4<->, (CF3-SO2)2N<->, ClO4<->, CF3SO3<->, NO3<-> or CF3CO2<->. d) using the ionic liquid prepared in step b) to dissolve a metallocene component of formula (II) R" (CpR<m>) (Cp'R<n>) M Q2 wherein Cp and C'p are independently selected from substituted or unsubstituted cyclopentadienyl groups M is a metal selected from Group 4 of the Periodic Table, R" is a structural bridge imparting stereorigidity between Cp and Cp' and Q is a halogen or an alkyl having from 1 to 12 carbon atoms; e) retrieving a metallocene catalyst component dissolved in an ionic liquid. <??>It also discloses an active catalyst system dissolved in an ionic liquid and its use in the polymerisation of olefins.
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