| 摘要 |
PROBLEM TO BE SOLVED: To provide a production method for a polymer compound solution whereby active carbon used for purifying the solution can be removed by filtration at a high filtration rate. SOLUTION: This production method comprises mixing a polymer compound solution with active carbon of which at least 50% of the particles have sizes in the range of 149 μm to 2,380 μm, adding a filtration assistant to the resultant mixture, and removing the active carbon by filtration from the mixture containing the assistant or comprises mixing a polymer compound solution with active carbon of which at least 50% of the particles have sizes in the range of 149 μm to 2,380 μm and removing the active carbon from the resultant mixture by using a filter medium having a filtration assistant attached thereto in advance. |
