PROCESS OF PRODUCING MODIFIED INTERPOLYMER OR MODIFIED POLYMER Russian patent published in 2014 - IPC C08C19/44 C08C2/02 C08F36/04 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a modified interpolymer of a conjugated diene-α-olefin or a modified conjugated diene polymer. The process produces silanols which have to be removed. The method includes polymerising monomers in the presence of a solvent, optionally linking part of the polymer chains with a coupling agent, modifying the polymer with a modifier dissolved in dry cyclohexane in a reactor in the presence of a solvent, contacting the solution of the modified polymer with water, removing the solvent from the reactor, contacting the removed solvent with a material containing aluminium oxide, silicon oxide and/or aluminosilicates. The material reacts with and/or adsorbs the formed silanol to obtain a purified solvent. The silanol is removed from the solvent. The purified solvent is recycled into the reactor or a storage container.

EFFECT: invention improves the quality of the obtained modified polymer by improving efficiency and lowering the cost of removing silanol.

15 cl, 8 tbl