| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to a technique of producing cis-1,4-polydienes by polymerising butadiene, isoprene or mixtures thereof in a medium of a hydrocarbon solvent in the presence of a rare-earth element based Ziegler-Natta catalyst. In the final stage of the polymerisation process, an ?-olefin and maleic anhydride copolymer is added to the reaction mass in ratio of cis-1,4-polydiene to copolymer of 1:1·10- 1·10.EFFECT: improved properties of cis-1,4-polydienes, cold flow, dynamic viscosity and polydispersity.2 tbl, 7 ex |
