| abstract |
ABSTRACT OF THE DISCLOSURE A process for preparing cis-polyisoprene which comprises polymerization of isoprene in a medium of a non-polar hydro-carbon solvent at a temperature ranging from 0 to 60°C in the presence of a catalyst comprising a reaction product of titan-ium tetrachloride and an intracyclic organo-aluminium compound having the formula: or wherein R, the same or different, are H, CH3; taken in a molar ratio of 1:1.05-1.1 respectively, weight ratio of isoprene to said catalyst being equal to 100:0.2-0.7. The present invention makes it possible to improve the quality of the thus-obtained cis-polyisoprene and to increase the catalyst capacity by 2 times due to modification of its properties. |