ES233261A1 - Procedure for the preparation of azocolorants containing heavy metal (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the preparation of azocolorants containing heavy metal (Machine-translation by Google Translate, not legally binding)
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Novartis AG
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JR Geigy AG
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Publication of ES233261A1publicationCriticalpatent/ES233261A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Coloring
(AREA)
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Abstract
Process for the preparation of heavy metal-containing azo dyes, characterized in that it accumulates in a di-cyclically coordinated azo-dye containing a co-ordinately hexavalent heavy metal atom per dye molecule, in a slightly acidic, neutral, or alkaline medium, a dye-azo dye. Cyclically metallizing, and because these azo dyes are chosen for the purpose so that the reaction product contains a complex mono- and disazo-dye in the heavy metal atom. (Machine-translation by Google Translate, not legally binding)
ES0233261A1956-01-261957-01-25Procedure for the preparation of azocolorants containing heavy metal (Machine-translation by Google Translate, not legally binding)
ExpiredES233261A1
(en)
Procedure for the preparation of metalizable azocolorants and their complex heavy metal compounds (Machine-translation by Google Translate, not legally binding)