| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for recovering adhesives without exerting no bad influence on an optical disk body in order to analyze the adhesives on the surface of an optical disk a acquired from an optical disk substrate formed from a resin mainly composed of a polycarbonate resin, and analyzing the recovered adhesives, and a usable optical disk from which the adhesives on the surface are removed. SOLUTION: This analytical method of the adhesives on the optical disk surface is characterized by recovering the adhesives on the optical disk surface by a solvent prepared from water and acetonitrile with the ratio in the range of 20:80-80:20 in the term of the volume ratio or a solvent prepared from water and alcohol having the carbon number of 1-4 with the ratio in the range of 0:100-40:60 in the term of the volume ratio, and analyzing the recovered adhesives, concerning the optical disk acquired from the optical disk substrate formed from the resin including the polycarbonate resin as much as 50 wt.% or more. The optical disk from which the adhesives on the surface are removed is also provided. |
