ES204941A1 - A procedure for the preparation of azocolorants that contain cobalt (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the preparation of azocolorants that contain cobalt (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
BASF Schweiz AG
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Ciba Geigy AG
Ciba AG
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Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Priority to ES0204941ApriorityCriticalpatent/ES204941A1/en
Publication of ES204941A1publicationCriticalpatent/ES204941A1/en
Process for the preparation of cobalt-containing azo dyes characterized in that it is reacted with monoazo dyes which are free of sulphonic acid groups and carboxyl groups and which correspond to an aromatic radical of the series of the benzoles containing in position-o with respect to the azo group a hydroxyl group and an oxygen atom or an nh group and r1 an alkyl cycloalkyl radical to aryl and in which at least one of the radicals r and r1 contains a sulfonic acid amide group which cobalt yields in such a way that cobalt-containing dyes originate which, per monoazo-dye molecule, contain less than one cobalt atom in complex link. (Machine-translation by Google Translate, not legally binding)
ES0204941A1952-08-111952-08-11A procedure for the preparation of azocolorants that contain cobalt (Machine-translation by Google Translate, not legally binding)
ExpiredES204941A1
(en)