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Claims (1)
PATENT-ANSPRUCH :
Abänderung des durch das Stammpatent Nr. 43579 geschützten Verfahrens zur Darstellung von sekundären Disazofarbstoffen dadurch gekennzeichnet, dass man die sekundären Disazofarbstoffe, welch d 2. 5-Aminonaphtol-7-sulfosäure oder 2. 5-Aminonaphtol-1. 7-disulfosäure in Endstellung und in der Anfangskomponente keine Hydroxylgruppe in para-oder peri. Stellung zur Azogruppe enthalten, mit aeidylierenden Mitteln behandelt.
PATENT CLAIM:
Modification of the process for the preparation of secondary disazo dyes, protected by the parent patent No. 43579, characterized in that the secondary disazo dyes, which d 2. 5-aminonaphthol-7-sulfonic acid or 2. 5-aminonaphthol-1. 7-disulfonic acid in the end position and no hydroxyl group in para or peri in the initial component. Contain position to the azo group, treated with aeidylating agents.
AT49566D1908-04-221910-07-15
Process for the preparation of secondary disazo dyes.
AT49566B
(en)