ARYLPHENOXY CATALYST SYSTEM FOR PRODUCING HOMOPOLYMER OR COPOLYMERS OF ETHYLENE AND ALPHA-OLEFINS Russian patent published in 2009 - IPC C08F10/02 C08F4/64 B01J31/12 

FIELD: chemistry.

SUBSTANCE: present invention describes an arylphenoxy catalyst system for producing a homopolymer of ethylene and copolymers and alpha-olefins, and a method of producing homopolymer of ethylene and copolymers and alpha-olefins, with high molecular weight under polymerisation conditions for a solution at high temperature using the same catalyst. The catalyst system contains a catalyst based on arylphenoxy-substituted group 4 transition metal and aluminoxane co-catalyst from a boron compound. In the transition metal catalyst, a cyclopentadiene derivative and arylphenoxide as chemically bonded ligands are localised around the group 4 transition metal. The arylphenoxide ligand is substituted with at least one aryl derivative and is localised in its ortho position and the ligands are linked with each other.

EFFECT: catalyst contains environmentally friendly material, its synthesis is cheap, and has excellent thermal stability; the catalyst is used in production of homopolymer of ethylene and copolymers and alpha-olefins with different physical properties in industrial polymerisation processes.

14 cl, 20 ex