| 摘要 |
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 RP, where R=aryl, alkyl or a thiol of general formula RSR, where R, R=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 |
