| abstract |
NEW COLORANTS CONTAINING AMINO OR IMINO GROUPS. THE NEW COLORANTS COMPLY WITH THE FORMULA: (CF DRAWING IN BOPI) IN WHICH R IS -N (R) CH-Z OR -NCH-Z, X IS N OR CR, R BEING HYDROGEN OR ALKYL OR ARYL POSSIBLY SUBSTITUTED, Y IS S, O, N OR NR, R BEING HYDROGEN OR ALKYL OR ARYL POSSIBLY SUBSTITUTED, R, R AND R REPRESENT HYDROGEN OR ALKYL C OR R AND R WITH THE NITROGEN ATOM COMPLETE A HETEROCYCLIC CORE, ONE OF THE SYMBOLS R AND R CAN BE HYDROGEN AND THE OTHER ARYL, Z IS A GROUP INCLUDING AN ACTIVATOR GROUP CONTAINING AT LEAST ONE DUAL LINK SYSTEM AND A BALLAST GROUP AND R AND R REPRESENT POSSIBLE SUBSTITUENTS OR FORM A BENZENE CONDENSE CORE. APPLICATION OF NEW COLORANTS TO THE PHOTOGRAPHIC FIELD, ESPECIALLY IN THE DIFFUSION-TRANSFER PROCESS OF COLORANTS FOR THE PRODUCTION OF PHOTOGRAPHIC IMAGES. |