FIELD: chemistry.
SUBSTANCE: present invention provides a method of producing a conjugated diene polymer. Also disclosed is the make-up of the used catalytic composition. The method of producing a conjugated diene polymer involves polymerisation of a conjugated diene monomer in the presence of a catalytically effective amount of the catalytic composition formed by mixing: (a) a nickel-containing compound; (b) an alkylating agent; (c) a fluorine-containing compound; (d) a carboxylic acid; and (e) an alcohol selected from a group consisting of aliphatic alcohols, cyclic alcohols, unsaturated alcohols, aromatic alcohols, heterocyclic alcohols and polycyclic alcohols, said polymerisation being carried out in a nonpolar solvent; molar ratio of the alkylating agent to the nickel-containing compound (alkylating agent/Ni) ranges from approximately 1:1 to 200:1; molar ratio of the fluorine-containing compound to the nickel-containing compound (F/Ni) ranges from approximately 7:1 to 500:1; molar ratio of the carboxylic acid to the nickel-containing compound (COOH/Ni) ranges from approximately 0.1:1 to 2:1; and molar ratio of the alcohol to the nickel-containing compound (OH/Ni) ranges from approximately 0.4:1 to 80:1; and said polymerisation is carried out using from about 0.01 to about 0.1 mmol of the nickel-containing compound per 100 g of the conjugated diene monomer.
EFFECT: obtaining a nickel-based catalytic composition and a polymer obtained using said composition.
18 cl, 2 tbl, 9 ex
