| abstract |
FIELD: chemistry of polymers. SUBSTANCE: claimed method comprises preparing cis-1,4-polyisoprene by polymerization of isoprene in hydrocarbon solvent in the presence of catalyst. The catalyst is complex comprising triisobutyl aluminium or diisobutyl aluminium hydride, chlorine containing coordination lanthanoid compound having atomic number of 57-60 with conjugated diene. Isoprene solution in aliphatic solvent fed for polymerization further contains, in addition to catalyst, triisobutyl aluminium or diisobutyl aluminium at said compound to lanthanoid compound molar ratio of 1:1 to 30:1. The organic ligans is alcohol or tributyl phosphate and the conjugated diene is piperylene. EFFECT: more efficient preparation method. 5 tbl |