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
Priority claimed from CH938469Aexternal-prioritypatent/CH515970A/en
Priority claimed from CH678270Aexternal-prioritypatent/CH536354A/en
Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Publication of ES380890A1publicationCriticalpatent/ES380890A1/en
Process for the preparation of azo dyes, characterized by coupling a coupling component of the formula ** (see formula) ** In which A is the acyl radical of an organic acid; D is a hydrogen atom, a chlorine atom, a lower alkyl group, a lower alkoxy group, a phenylthio group or a phenoxy group; R1 is an alkyl radical, optionally substituted; And it's an oxygen or sulfur atom or an iminic group, R is a univalent organic radical; y R2 is a hydrogen atom or an alkyl group, with the diazonium compound of a diazo component D-nh2 And, when there is a quaternizable amine group, it is eventually treated with quaternizing agents. (Machine-translation by Google Translate, not legally binding)
ES380890A1969-06-191970-06-18Procedure for the preparation of azoic colors (Machine-translation by Google Translate, not legally binding)
ExpiredES380890A1
(en)
A procedure for the preparation of 1 - (omega-substituted-alcohil) -2-methylbenzimidazoles. (Machine-translation by Google Translate, not legally binding)