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
Original Assignee
Ciba Geigy AG
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Filing date
Publication date
Application filed by Ciba Geigy AGfiledCriticalCiba Geigy AG
Priority to ES0221121ApriorityCriticalpatent/ES221121A1/en
Publication of ES221121A1publicationCriticalpatent/ES221121A1/en
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Abstract
Process for the preparation of new polyazo dyes characterized in that complex metal compounds of formula ** (see formula) ** are demetallized in which they mean R1 a benzene radical containing an oxy group in the para position with respect to the azo group and a carboxylic acid group in the ortho position with respect to the latter R2 a benzene radical linked in para position to the azo groups R3 a benzene radical linked in position 1 3 4 to the groups ** (see formula) ** X a primary amino or acylamino group and I am a metal atom in complex bond. (Machine-translation by Google Translate, not legally binding)
ES0221121A1955-04-091955-04-09Procedure for the preparation of new polyazocolorants (Machine-translation by Google Translate, not legally binding)
ExpiredES221121A1
(en)