FIELD: production of cis-1,4 homopolymers and cis-1,4 copolymers. SUBSTANCE: method includes reaction in hydrocarbon solvent of lanthanide halogen-containing compound used in form of lanthanide halides formed by reaction of compounds soluble in hydrocarbons compounds selected from group including lanthanide carboxylates and lanthanide alcoholates, with halides of IIIA, IV and V groups of Periodic table, or alkylaluminum halides with aluminum organic compound and diene with lanthanide: aluminum: diene molar ratio of 1:(1-15):(0.1-20). EFFECT: simplified method of production of catalyst of polymerization of unsaturated hydrocarbons, possessing high activity and stereoselectivity of its action with high output and improved microstructure.
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