Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
BASF Schweiz AG
Original Assignee
Ciba Geigy AG
Ciba AG
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Filing date
Publication date
Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Priority to ES225469ApriorityCriticalpatent/ES225469A1/en
Publication of ES225469A1publicationCriticalpatent/ES225469A1/en
Process for dyeing fibers containing cellulose according to the usual methods for direct dyes characterized in that for this purpose it is dyed with trisazo dyes of composition ** (see formula) ** in which they mean R1</ sub> a benzene radical containing an oxy group and in the ortho position with respect to this a carboxylic acid group R2</ sub> and R3</ sub> benzene radicals R4</ sub> a naphthalene radical one X one hydrogen atom and the other X a sulfonic acid group to which effect the carbon atoms bonded to the azo group and the CO-HN group of the radical R2 are separated from each other by at least one carbon atom the CO group -HN and the azo group are in position for the radical R3 the two azo groups are in position 1 4-of the radical R 4 and the radical R3 contains in ortho position with respect to the group N = NR 4 a sulfonic acid group and the radical R 4 contains ortho position with respect to the azo group linked to the naphthalene nucleus in the final position, an alkoxy group and because, whenever the dyes present a diazotizable amino group, they are diazotized on the fiber, developing with appropriate azocomponents.
ES225469A1955-12-091955-12-09A procedure for dyeing fibers containing cellulose (Machine-translation by Google Translate, not legally binding)
ExpiredES225469A1
(en)