FLUORINATED ALKOXY-IMINO CATALYST COMPONENTS.

摘要

This invention relates to fluorinated alkoxy-imino metallic complexes and their use in catalyst systems for the polymerisation or oligomerisation of ethylene and alpha-olefins. The metallic complex results from the metallation reaction of a metal salt or precursor of formula MX₄ wherein M is a metal group 4 of the Periodic Table, and wherein each X is the same or different and is halogen, or an alkyl or benzyl group with a fluorinated alcohol-imine pro-ligand of general formula (I) wherein R¹ is alkyl, cycloalkyl, allyl, benzyl, or an aromatic group, all optionally substituted with one or more fluorinated alkyl group, or an heteroaromatic group, having at most 20 carbon atoms, R² is hydrogen, or alkyl, cycloalkyl, or aryl group having at most 20 carbon atoms and optionally substituted with one or more fluorinated alkyl groups, R³ and R⁴ are each independently selected from perfluorinated alkyl groups, or aryl or alkyl group substituted or unsubstituted, with the proviso that at least one of R³ and R⁴ is a perfluorinated alkyl group.