| 摘要 |
PURPOSE:To obtain an optical information record medium having excellent shelf life and recording regenerating characteristics by using a specific metallic complex as a light stabilizer. CONSTITUTION:A light stabilizer consists of a substituted benzene dithiol metallic complex cation salt shown by formula [I], and has excellent light fastness, light absorbing reflecting properties and solvent etching properties to a pigment and an organic solvent. Where X and Y may be the same or differ in formula [I], and represent 1-4 C perfluoroalkyl group. perfluoroacyl group, perfluoroalcoky group or alkyl group, and represent the dialkylamino group of a 1-4 C alkyl section or halogen. M represents a transition metal and (m) and (n) each represent the integers of 1-4, but X and Y may be the same or differ when (m) and (n) each represent 2 or more. Z represents a cation. |
