FIELD: chemistry.
SUBSTANCE: claimed invention relates to method of polymerisation in volume for obtaining polydienes. Described is method of obtaining polydiene, which includes stage (i) of combining (a) conjugated diene monomer, (b) lanthanide organophosphate, (c) alkylating agent and (d) chlorine-containing compound with molar ratio of alkylating agent and lanthanide organophosphate from 2:1 to 500:1, molar ratio of chlorine-containing compound and lanthanide organophosphate from 0.5:1 to 20:1, and amount of lanthanide organophosphate from 0.001 to 10 mmol per 100 g of conjugated diene monomer, where polymerisation mixture, which includes less than 20 wt % of solvent calculated per the total weight of polymerisation mixture is formed at said stage (i) and (ii) realisation of polymerisation of conjugated diene monomer with formation of polydiene, which has at least 98% of cis-1,4 links and molecular-weight distribution less than 2.2.
EFFECT: obtaining polydiene, characterised by combination of high level of content of cis-1,4-links and narrow molecular-weight distribution.
8 cl, 3 tbl, 13 ex
