METHOD OF PRODUCING A MODIFIED POLYMER BASED ON A CONJUGATED DIENE, A MODIFIED POLYMER BASED ON A CONJUGATED DIENE, A POLYMER COMPOSITION, A CROSS-LINKED BODY, A TIRE AND A COMPOUND Russian patent published in 2019 - IPC C08C19/25 C08C19/22 C08C19/30 C08F36/04 C08F8/42 B60C1/00 C08L15/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a modified polymer based on a conjugated diene, a modified polymer based on a conjugated diene, a polymer composition, a cross-linked body and a tire. Modified polymer based on a conjugated diene is obtained by a method involving reaction of a polymer based on a conjugated, having an active end group of a chain obtained by polymerising a monomer, having a conjugated diene compound, in the presence of an initiator which includes at least either an alkali metal compound, or an alkali-earth metal compound, with a compound [M] having at least two groups selected from the group ''-C(R¹)=NA¹'', or from group ''-N=C(R¹)-A¹'', where R¹ means a hydrogen atom or a hydrocarbyl group, and A¹ is a monovalent group having an alkoxysilyl group. Modified polymer based on a conjugated diene having high Mooney viscosity and good shape stability, and exhibiting excellent processability and low heat generation are obtained in a minimum number of steps.

EFFECT: disclosed are a method of producing a modified polymer based on a conjugated diene, a modified polymer based on a conjugated diene, a polymer composition, a cross-linked body, a tire and a compound.

11 cl, 19 ex, 5 tbl