| abstract |
MONOAZO DYESTUFFS OF THE FORMULA 2-(4-((2(Z=),4,6-DI(O=)HEXAHYDROPYRIMIDIN-5-YL)-N=N-),Y, Q-PHENYL),4-X,6-R2,R1-BENZOTHIAZOLE WHEREIN R1, X AND Y ARE HYDROGEN, LOWER ALKOXY OR LOWER ALKYL; R2 AND Q ARE H OR SO3H WITH AT LEAST ONE BEING SO3H; AND Q IS OXYGEN, SULFUR, IMINO, OR LOWER ALKYL IMINO. THESE DYESTUFFS COLOR PAPER AND PAPER PULP IN ATTRACTIVE GREENISH YELLOW SHADES BUT HAVE LITTLE AFFINITY FOR COTTON, SAID PAPER DYEINGS BEING ALKALI- AND ACID-FAST AND DISCHARGED ON CONTACT WITH CONVENTIONAL BLEACHING AGENTS. |