Method for dimerisation of ethylene into butene-1 using a composition including a titanium complex and an alcoxy ligand functionalised by a heteroatom

摘要

Catalyst composition comprises at least one organometallic complex of titanium, where the organometallic complex contains at least one alkoxy ligand functionalized by a heteroatom such as nitrogen, oxygen, phosphorus, arsenic sulfur and antimony or by an aromatic group. Catalyst composition comprises at least one organometallic complex of titanium, where the organometallic complex contains at least one alkoxy ligand functionalized by a heteroatom such as nitrogen, oxygen, phosphorus, arsenic sulfur and antimony or by an aromatic group, and has a structure of formula ([Ti(OR) n(Y1) ( 4 - n )]). Y1 : a hydrocarbyl having 1-30C or a group comprising halides, R1O-alkoxy, R1 2N- amido and R1COO-carboxylates; R1 : hydrocarbyl, preferably non-functionalized, comprising 1-30C; n : 1-4; ligand-OR : an organic compound such as family of alkoxy ligands of formula (O-(CR 1 0R 1 1) n1-X-L); functional group L : a group comprising heteroatom such as nitrogen, oxygen, phosphorus, sulfur, arsenic and antimony or an aromatic group; X : hydrocarbon group (CR 7R 8), an oxygen atom or a group containing a nitrogen atom -NR 9; R 7, R 8, R 9, R 1 0, R 1 1 : H or a (non)cyclical hydrocarbon chain, comprising 1-30C and optionally comprising a heteroatom; and n1 : 0-30. An independent claim is included for a process for selective dimerization of ethylene into butene-1 comprising implementing the catalyst composition.