abstract |
PURPOSE: A colored quinaphthalone compound expressed by formula: (where A and B are benzene rings, and may be substituted by halogen; X is a phenylene or naphthylene, bonded in the ortho- or peri-position with respect to the carboxyl group, and may be substituted by a noionizing substituent)(for example, compound expressed by formula II). n COPYRIGHT: (C)1976,JPO&Japio |