| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for producing a cellulose solution, which can raise the recovery efficiency of an ionic liquid and improve the production efficiency by achieving low energy consumption and improving the solubility of the pulp when a recovered ionic liquid after use is reused. <P>SOLUTION: The method for producing a cellulose solution includes dissolving a pulp in an ionic liquid. The ionic liquid to be used has a water content of 20 to 50 mass%; and the dissolution of the pulp in the ionic liquid is carried out under a pressure lower than the vapor pressure of water in a mixture of the pulp and the ionic liquid at a temperature at the dissolution, and at a heated temperature of≥70°C. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
