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Novartis AG
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JR Geigy AG
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Publication of ES233261A1publicationCriticalpatent/ES233261A1/es
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Coloring
(AREA)
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Abstract
Procedimiento para la preparación de azocolorantes que contienen metal pesado, carcterizado porque se acumula a un azocolorante di-cíclicamente coordinado que contiene un átomo de metal pesado coordinativamente hexavalente por molécula de colorante, en medio ligeramente ácido, neutro, o alcalino, un azocolorante di-cíclicamente metalizador, y porque se elige al efecto estos azocolorantes de modo que el producto reaccional contiene un mono- y un disazocolorante en enlace complejo en el átomo de metal pesado.
ES0233261A1956-01-261957-01-25PROCEDIMIENTO PARA LA PREPARACIoN DE AZOCOLORANTES QUE CONTIENEN METAL PESADO
ExpiredES233261A1
(es)