FIELD: chemistry.
SUBSTANCE: method for producing the polydiene comprises the steps of: polymerizing a conjugated diene monomer using a metallocene complex containing catalyst system in a polymerization mixture containing less than 20 wt % of the solvent of the total weight of the polymerization mixture to obtain polymer chains that contain reactive ends and introducing a functionalizing agent into a polymerization mixture to react with reactive polymer chains to form a functionalized polymer, wherein the metallocene complex containing catalyst system comprises a combination or reaction product of: (a) a metallocene complex, (b) an alkylating agent, and (c) a noncoordinating anion; where the metallocene complex is defined by the formula I 
, where M is an element of a lanthanide series, scandium or yttrium, Cp is a cyclopentadienyl group or a cyclopentadienyl group derivative, Y is a hydrocarbyloxy group, a thihydrocarbyloxy group, an amino group, a silyl group, a cyclopentadienyl group or a cyclopentadienyl group derivative, X is a hydrogen atom, a halogen atom, a hydrocarbyloxy group, a thihydrocarbyloxy group, an amino group, a silyl group or a monovalent organic group, each L is independently a neutral Lewis base, n is a number from 0 to 3, or where Cp and Y are combined by a divalent group, and where from 0.0005 to 0.01 mmol of metallocene complex per 100 g of conjugated diene monomer is used.
EFFECT: reaction equipment does not contain gel residues after polymerization in bulk, which is ensured by the minimal release of heat during polymerization.
16 cl
