ES220685A1 - Procedure for the preparation of azocolorants that contain copper (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the preparation of azocolorants that contain copper (Machine-translation by Google Translate, not legally binding)
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.)
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Novartis AG
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Ciba Geigy AG
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Priority to ES0220685ApriorityCriticalpatent/ES220685A1/en
Publication of ES220685A1publicationCriticalpatent/ES220685A1/en
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Abstract
Process for the preparation of copper-containing azo dyes, characterized in that copper-releasing media are reacted with dyes corresponding to one of the formulas ** (See formula) ** in which they mean R a benzene radical, condensed in the manner indicated with the thiazole ring, R1 a benzene radical linked to the azo group in para position with respect to the thiazole ring, R2 a benzene radical or naphthalene radical, and also a benzene radical or naphthalene radical, to which effect at least one of the radicals R and R1 contains a sulfonic acid group, and the groups -R1-N = N-, -O -alcohyl and -N = N- are in position 1,3,4 of the radical R2, under such conditions that by dissociation of the alkoxy group that is present in the o-oxy-o'-alkoxy group, copper complexes are formed or, o'-dioxiazoics and furthermore, in the o-aminoazo dyes, the free amino group and the azo group bound to R3 are closed, forming the triazole ring. (Machine-translation by Google Translate, not legally binding)
ES0220685A1955-03-151955-03-15Procedure for the preparation of azocolorants that contain copper (Machine-translation by Google Translate, not legally binding)
ExpiredES220685A1
(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)