| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for recycling nylon 6 products from the nylon 6 product including one or more kinds of resin components as impurities through a simple operation with an industrially advantageous method, further to provide a recycling method for the nylon 6 product by depolymerization of the recovered nylon 6 product and collecting caprolactam of high grade. <P>SOLUTION: The nylon 6 product that includes, as impurities, one or more kinds of resin components selected from resin components caused by resin treatment or attached resins is heated in an alkaline water solution to recover the nylon 6 product from which the stated impurities are removed. Then, the recovered nylon 6 product is depolymerized to collect caprolactam. In this case, even when the nylon 6 product is dyed, it can be decolorated simultaneously. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
