| abstract |
MONOAZO DYESTUFFS OF THE FORMULA 2-((-CO-NH-CO-NH-CO-)>CH-N=N-(Y,Q-1,4-PHENYLENE)-),4-X, R1,R2-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, AND WHICH PAPER DYEINGS ARE ALKALI- AND ACIDFAST AND ARE DISCHARGED ON CONTACT WITH CONVENTIONAL BLEACHING AGENTS. |