METHOD FOR POLYMERISATION OF OLEFIN-BASED POLYMERS Russian patent published in 2013 - IPC C08F10/00 C08F2/18 C08F2/34 C08F4/64 

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing olefin-based polymers. Described is a method of producing olefin-based polymers, which involves polymerisation of at least one monomer in a gas phase in the presence of at least the following components: A) a catalyst which contains metals Mg, Ti, Hf and optionally Zr; B) a co-catalyst which is trialkylaluminum; C) a composition containing at least one compound selected from compounds of formula (1) and at least one compound selected from compounds of formula (II): (R1CO₂)₂AlOH (1), (R2)_xN(R3OH)_y (II); where R1 is a hydrocarbon radical containing 13-25 carbon atoms; R2 is a hydrocarbon radical containing 14-26 carbon atoms; R3 is a hydrocarbon radical containing 1-4 carbon atoms, and x+y=3, and x equals 1 or 2. Described also is a method of producing olefin-based polymers, which involves polymerisation of at least one monomer in a suspension process, in the presence of at least the following components: A) a catalyst which contains metals Mg, Ti, Hf and optionally Zr; B) a co-catalyst which is trialkylaluminum; C) a composition containing at least one compound selected from compounds of formula (1) and at least one compound selected from compounds of formula (II): (R1CO₂)₂AlOH (I), (R2)_xN(R3OH)_y (II); where R1 is a hydrocarbon radical containing 13-25 carbon atoms; R2 is a hydrocarbon radical containing 14-26 carbon atoms; R3 is a hydrocarbon radical containing 1-4 carbon atoms, and x+y=3, and x equals 1 or 2. Described is a method of producing olefin-based polymers, which involves polymerisation of at least one monomer in the presence of at least the following components: A) a Ziegler-Natta catalyst which contains metals Mg, Ti, Hf and optionally Zr; B) a trialkylaluminum compound; C) a composition containing at least one compound selected from compounds of formula (1) and at least one compound selected from compounds of formula (II): (R1CO₂)₂AlOH (I), (R2)_xN(R3OH)_y (II); where R1 is a hydrocarbon radical containing 13-25 carbon atoms; R2 is a hydrocarbon radical containing 14-26 carbon atoms; R3 is a hydrocarbon radical containing 1-4 carbon atoms, and x+y=3, and x equals 1 or 2.

EFFECT: providing prolonged continuous reactor operation without formation of a polymer layer on walls and agglomerates when producing high-molecular weight olefin-based polymers.

17 cl, 12 tbl, 6 dwg, 14 ex