ES231825A1 - Procedure for the preparation of polyazocolorants that contain copper (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the preparation of polyazocolorants that contain copper (Machine-translation by Google Translate, not legally binding)
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Novartis AG
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Ciba Geigy AG
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Publication of ES231825A1publicationCriticalpatent/ES231825A1/en
Process for the preparation of polyazo dyes containing copper, characterized in that polyazo dyes of formula are treated ** (See formula) ** where they mean X1 a group that is in position or with respect to the azo group, and X2 a group that is in ortho position with respect to the group -N = N-R4, apt to participate in the formation of metal complexes; -R1-X1- the radical of a diazo component of the benzene series containing at least one hydro-solvent power group; R2 a diphenyl radical, linked in position 4 to the pyrazolone ring and in position 4 'to the azo group, which contains in a 3' position a sulfonic acid group; R3 a naphthalene radical linked in position to the azo groups, and -R4-OH the radical, linked in position close to the oxy group with the azo group, of an oxinaphthalenesulfonic acid, possibly under the dissociation of the existing alkoxy groups in o-oxy-o'-alkoxyazoic groups, with copper-yielding media. (Machine-translation by Google Translate, not legally binding)
ES0231825A1955-11-071956-11-06Procedure for the preparation of polyazocolorants that contain copper (Machine-translation by Google Translate, not legally binding)
ExpiredES231825A1
(en)
Procedure for the preparation of metalizable monoazocolorants and susu complex heavy matal compounds (Machine-translation by Google Translate, not legally binding)