BIS-ARYLARYLOXY CATALYST SYSTEM FOR PRODUCING ETHYLENE HOMOPOLYMERS OR COPOLYMERS OF ETHYLENE WITH ALPHA-OLEFINS

FIELD: chemistry. ^ SUBSTANCE: present invention relates to a bis-arylaryloxy catalyst system for producing ethylene homopolymers or copolymers of ethylene with -olefins. Described is a transition metal-containing bis-arylaryloxy catalyst of formula 1, which contains cyclopentadienyl or derivative thereof around a transition metal and two aryloxide ligands substituted with aryl derivatives in ortho-positions, wherein the ligands do not form a bridge with each other: where M denotes a group IV transition metal; Cp denotes cyclopentadienyl or derivative thereof, which can form a 5-bond with the central metal atom; each of R1, R2, R3, R4, R5, R6, R7, R8 and R9 on aryl phenoxide ligands independently denotes a hydrogen atom, a halogen atom, a straight C1-C20-alkyl group or a branched C3-C20-alkyl group, optionally substituted with at least one halogen atom, a silyl group containing a straight C1-C20-alkyl group or a branched C3-C20-alkyl group, optionally substituted with at least one halogen atom, a C6-C30-aryl group optionally substituted with at least one halogen atom, a C7-C30-arylalkyl group optionally substituted with at least one halogen atom, alkoxy group, having a straight C1-C20-alkyl group or branched C3-C20-alkyl group, optionally substituted with at least one halogen atom, siloxy group substituted with C3-C20-alkyl or C6-C20-aryl, amide- or phosphide group, having a C1-C20-alkyl group, C6-C20-aryl group, C7-C20-arylalkyl group, or a mercapto- or nitro group, substituted with C1-C20-alkyl, where these substitutes can also be optionally bonded with each other to form a ring; and X is selected from a group consisting of a halogen atom, C1-C20-alkyl group other than Cp, C7-C30-arylalkyl group, alkoxy group having a C1-C20-alkyl group, siloxy group substituted with C3-C20-alkyl and an amide group having a C1-C20-alkyl group, C6-C20-aryl group or C7-C20-arylalkyl group. The invention also describes a bis-arylaryloxy catalyst system for producing ethylene homopolymers or copolymers of ethylene with -olefins, containing said transition metal-containing bis-arylaryloxy catalyst of formula 1, which contains cyclopentadienyl or derivative thereof, around a transition metal and two aryloxide ligands, substituted with aryl derivatives in the ortho-positions, wherein the ligands do not a bridge with each other, and an aluminoxane cocatalyst or boron compound as a cocatalyst. Described is a method of producing a copolymer of ethylene with -olefin using said bis-