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 ES0244160ApriorityCriticalpatent/ES244160A1/en
Publication of ES244160A1publicationCriticalpatent/ES244160A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Process for the preparation of novel disazo dyes characterized in that dyes of the formula are prepared in which r denotes a benzene radical containing sulphonic acid groups and carries the -nh- group in para position but preferably meta with respect to to the azoy group ** are radicals of a coupling component linked to the azo group in a position close to the oxy group, of which at least one has an acid group of hydro-solvent power by coupling or condensation. (Machine-translation by Google Translate, not legally binding)
ES0244160A1958-09-161958-09-16Procedure for the preparation of new diazoic colors (Machine-translation by Google Translate, not legally binding)
ExpiredES244160A1
(en)