| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To efficiently obtain a high molecular weight compound in a shorter time when decomposition treatment of thermosetting resins contained in large amounts in wastes is carried out. <P>SOLUTION: A method for carrying out decomposition treatment of the thermosetting resins comprises decomposing the thermosetting resins by using a mononuclear phenol compound in supercritical or subcritical state or a mixture of water with the mononuclear phenol compound as a reaction solvent. In the decomposition treatment method, a formaldehyde compound is further added thereto during a decomposition step of the thermosetting resins. As a result, low molecular weight to high molecular weight compounds consisting mainly of a resin component having 200-100,000 molecular weight are efficiently recovered in a short time. <P>COPYRIGHT: (C)2004,JPO</p> |
