METHOD FOR PREPARATION OF VANADIUM MAGNESIUM POLYMERIZATION CATALYST OF ETHYLENE AND COPOLIMERIZATION OF ETHYLENE WITH ALPHA OLEFINES Russian patent published in 2019 - IPC B01J31/36 B01J37/00 C08F10/02 C08F4/685 C08F4/614 C08F210/16 

FIELD: chemistry.

SUBSTANCE: invention relates to a method for producing catalysts for polymerization of ethylene and copolymerization of ethylene with α-olefins, more specifically to supported Ziegler-type catalysts containing in their composition transition metal compound on magnesium-containing carrier. Catalyst for production of polyethylene and copolymers of ethylene with alpha-olefins with broad molecular weight distribution, containing transition metal compound on magnesium-containing carrier, prepared by interaction of organomagnesium compound solution with chlorinating agent phenyltrichloromethane PhCCl₃ with a molar ratio of PhCCl₃/Mg ≥ 1.0 at a temperature of 15–45 °C, followed by treatment of the support with an alkyl aluminum chloride and application of the vanadium compound, as the organomagnesium compound a solution of butyl magnesium chloride in ether R₂O is used, where R = i-amyl or butyl, into which, prior to the introduction of the chlorinating agent, the modifier is introduced – aliphatic ester – ethyl acetate (EA) at a molar ratio of EA / Mg = 0–0.5.

EFFECT: high catalyst activity in the processes of suspension polymerization of ethylene and copolymerization of ethylene with αolefins and production of polymers with wide MWD, narrow and adjustable particle size distribution and increased bulk density (>0,35 g/cm³).

1 cl, 15 ex, 1 tbl