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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Priority to ES206656ApriorityCriticalpatent/ES206656A1/en
Publication of ES206656A1publicationCriticalpatent/ES206656A1/en
Process for the preparation of monoazo dyes, characterized in that diazo compounds of amines free of sulfonic acid groups and of carboxyl groups of the general formula in which R denotes an alkyl radical containing at least 3 carbon atoms an aralkyl or aryl radical and R1 are coupled a benzene radical that carries the oxy and amino groups relative to each other in position with coupling components free of sulfonic acid groups and carboxyl groups that couple in proximity to an oxy group. (Machine-translation by Google Translate, not legally binding)
ES206656A1952-12-051952-12-05A procedure for the preparation of monoazocolorants (Machine-translation by Google Translate, not legally binding)
ExpiredES206656A1
(en)
Procedure for the preparation of insoluble bisazous colors in water and the colorants obtained by this process (Machine-translation by Google Translate, not legally binding)