Ethylene trimerisation and tetramerisation catalysts with polar-substituted diphosphinoamine ligands

摘要

Chromium-based catalyst systems with polar-substituted diphosphinoamine ligands are selective for either trimerisation or tetramerisation of ethylene,depending on the position of the polar groups on the aryl rings.New technologies for the selective oligomerisation of ethylene to valuable 1-alkenes such as 1-hexene and 1-octene remain an imperative in the co-monomer industry.