| 摘要 |
<p>PURPOSE: A method is provided to effectively remove a frit seal from electronic parts without generating noxious gas, while preventing an environmental contamination by reducing the discharge volume of wastes. CONSTITUTION: A method is characterized in that the removal of thermosetting glass from electronic parts is performed by using an aqueous solution of acid or salt containing sulfonic acid ion. The acid is one selected from a group consisting of sulfamic acid(NH2SO3H), toluene sulfonic acid(CH3C6H4SO3H) and sulfanilic acid(NH2C6H4SO3H). The salt is one selected from a group consisting of ammonium sulfamate(NH4SO3NH2) and sodium sulfosalicylate(NaO3SC6H3(OH)COOH2HO).</p> |
