СПОСОБ ИЗОМЕРИЗАЦИИ СОЕДИНЕНИЙ МЕТАЛЛОЦЕНА

摘要

An isomerization process comprising the step of contacting a slurry or a solution comprising the meso or meso-like form of one or more bridged metallocene compounds of group 4 of the Periodic Table of the Elements having C2 or C2-like symmetry with an isomerization catalyst of formula (I) [R4W]+X- (I) wherein: W is a nitrogen or a phosphorus atom; R, equal to or different from each other, are C1-C40 hydrocarbon radicals and X- is an halide atom.