ETHYLENE OLIGOMERISATION CATALYST, METHOD OF PRODUCING SAID CATALYST AND OLIGOMERISATION METHOD USING SAID CATALYST Russian patent published in 2012 - IPC B01J31/18 B01J31/16 C07C2/32 C08F4/69 

FIELD: chemistry.

SUBSTANCE: present invention relates to an ethylene oligomerisation catalyst, a method of producing said catalyst and an ethylene oligomerisation method. The catalyst contains a functionalised solid support; a ligand which is fixed on the solid support as a result of chemical bonding, and a chromium compound which has reacted with the ligand. The fixed ligand has the structure (R₁)(R₂)P-N(R₃)-P(R₄)-Y-support or (R₁)(R₂)P-N(R₃)-P(R₄)- N(R₅)-P(R₆)-Y-support, where R₁, R₂, R₃, R₄, R₅ and R₆ are independently selected from an aliphatic group, an aryl group, an amino group and a trimethylsilyl group, and Y is a functional group of the support or derivative thereof. The method of producing the catalyst comprises steps where: (i) a ligand having the structure (R₁)(R₂)P-N(R₃)- P(R₄)Cl or (R₁)(R₂)P-N(R₃)-P(R₄)-N(R₅)-P(R₆)X, where X where X is a leaving group, and R₁, R₂, R₃, R₄, R₅ and R₆ given above, is fixed on the functionalised solid support as a result of chemical bonding, and (ii) the chromium compound and the fixed ligand react. The oligomerisation method is realised in the presence of said catalyst.

EFFECT: group of inventions particularly enables to avoid a wide range of LAO products; the catalyst is also stable and reliable during use without washing off of active components of the catalyst.

20 cl, 2 dwg, 2 ex