abstract |
This invention relates to novel compounds of the isoindolenine series. More particularly, the present invention relates to certain novel 1-imino-3-(4-imino-5thiazolidinylidene)isoindolines, 1-imino-3-(4-imino-2-thiazolin5-ylidene)isoindolines, water-insoluble pigments prepared therefrom, and to methods for their preparation. |