METHOD OF PURIFYING POLYMER SOLUTION

摘要

PROBLEM TO BE SOLVED: To provide a method of purifying a polymer solution, capable of obtaining a purified polymer solution by removing these metal residues efficiently from the polymer solution that contains at least lithium and/or titanium.SOLUTION: A method of purifying a conjugated diene-based polymer solution obtained by living anionic polymerization includes at least: a step 1 of preparing the polymer solution that contains lithium and/or titanium; and a step 2 of adding an inorganic flocculant to the polymer solution and then mixing them with each other.