METHOD OF OBTAINING MODIFIED TITANIUM-MAGNESIUM NANOCATALYST Russian patent published in 2013 - IPC B01J37/00 B01J37/04 B01J21/06 B01J21/10 B01J27/14 C08F4/64 C08F4/642 C08F36/08 B82B1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to production of polymers, specifically metal complex polymerisation catalysts, and can be used to produce trans-1,4-polyisoprene. Described is a method of obtaining a modified titanium-magnesium nanocatalyst for polymerisation of isoprenate by reacting magnesium with titanium tetrachloride and butyl chloride in volume ratio of 1/(63-190), followed by washing and further modification with phosphine of general formula R₃P, where R=aryl, alkyl or a thiol of general formula R₁SR₂, where R₁, R₂=aryl, alkyl or carbon disulphide. In the nanocatalyst, the ratio phosphorus/titanium in the case of phosphine or sulphur/titanium in the case of thiol or carbon disulphide ranges from 1 to 20 mol/mol.

EFFECT: high stereospecificity of the catalyst with respect to isoprene and reduced amount of low molecular weight fractions in polyisoprene.

3 cl, 15 ex