| 摘要 |
<p>This invention is a process comprising the steps of contacting a Group VIII metal hydrogenation catalyst residue-containing polymer solution with an aqueous solution of ammonia and carbon dioxide, separating the residue from the solution, and recovering a polymer solution preferably comprising less than 15 ppm by weight based on polymer, of the Group VIII metal. The concentration of the ammonia in the aqueous solution is from 2 to 7 % by weight, preferably 3 to 6 % by weight. The concentration of the carbon dioxide in the solution is from 1 to 7 % by weight, preferably 2 to 6 % by weight.</p> |
