| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for selectively removing a cellulose-based polymer from a material to be treated, containing the cellulose-based polymer, without requiring a high temperature and a long time treatment, having a small environmental load and also a high operational safety, gentle to environment, and a device for executing the method. <P>SOLUTION: This method for selectively removing the cellulose-based polymer is provided by heating for reacting the material to be treated containing the cellulose-based polymer with an esterifying agent (preferably at least 1 kind selected from an organic acid, organic acid ester and organic acid anhydride) for dissolving only the cellulose-based polymer contained in the material to be treated for selectively dissolution-separating the same from the other non-cellulose-based polymer. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
