| abstract |
2 - (4'' - (OXDIAZOLYL -2")-STYRYL)-BENZOTRIAZOLES OF THE GENERAL FORMULA 2-((2-R2-1,3,4-OXADIAZOL-5-YL)-(1,4-PHENYLENE)-CH=CH-), 5-R1-BENZOTRIAZOLE IN WHICH R1 DENOTES HYDROGEN, HALOGEN, ALKYL, ARALKYL OR ARYL RADICALS, AND R2 MEANS HYDROGEN, ARYL, ARALKENYL OR HETEROARYL RADICALS, AS WELL AS THEIR PREPARATION AND THERE USE AS OPTICAL BRIGHTENING AGENTS. |