| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a dyed plastic lense capable of enhancing dyeing and hardly occurring dyeing unevenness.SOLUTION: A method of manufacturing a dyed plastic lense includes following process (1) and process (2), and a content of surfactant (B) based on a compound (C) in an aqueous solution (Y) is 1.5 or more by mass ratio, a concentration of the compound (C) in a dyeing solution is 150 mg/L or more. Process (1): a process of mixing an aqueous solution (X) containing a disperse dye (A) and the aqueous solution (Y) containing the surfactant (B) and a specified benzophenone compound (C) to prepare the dyeing solution. Process (2): a process of dyeing a plastic lense in the dyeing solution. |
