ES204532A1 - A procedure for the obtaining of azocolorants containing metal (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the obtaining of azocolorants containing metal (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 ES0204532ApriorityCriticalpatent/ES204532A1/en
Publication of ES204532A1publicationCriticalpatent/ES204532A1/en
Process for the preparation of metal-containing azo dyes characterized in that it is reacted with monoazo dyes which are free of sulfonic acid and carboxyl groups and which correspond to the general formula ** in which r1 a benzole radical linked to the azo group in position-o with respect to the group oxy and r2 a benzole radical containing at least one substituent which does not exhibit solubilizing power cobalt yielding or preferably chromium in such a way that azo dyes containing metal are formed which they contain per molecule of monoazo dye. Less than a cobalt or chromium atom in complex bond. (Machine-translation by Google Translate, not legally binding)
ES0204532A1952-07-151952-07-15A procedure for the obtaining of azocolorants containing metal (Machine-translation by Google Translate, not legally binding)
ExpiredES204532A1
(en)